Merge tag 'input-for-v6.12-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:

- support for PixArt PS/2 touchpad

- updates to tsc2004/5, usbtouchscreen, and zforce_ts drivers

- support for GPIO-only mode for ADP55888 controller

- support for touch keys in Zinitix driver

- support for querying density of Synaptics sensors

- sysfs interface for Goodex "Berlin" devices to read and write touch
IC registers

- more quirks to i8042 to handle various Tuxedo laptops

- a number of drivers have been converted to using "guard" notation
when acquiring various locks, as well as using other cleanup
functions to simplify releasing of resources (with more drivers to
follow)

- evdev will limit amount of data that can be written into an evdev
instance at a given time to 4096 bytes (170 input events) to avoid
holding evdev->mutex for too long and starving other users

- Spitz has been converted to use software nodes/properties to describe
its matrix keypad and GPIO-connected LEDs

- msc5000_ts, msc_touchkey and keypad-nomadik-ske drivers have been
removed since noone in mainline have been using them

- other assorted cleanups and fixes

* tag 'input-for-v6.12-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (98 commits)
ARM: spitz: fix compile error when matrix keypad driver is enabled
Input: hynitron_cstxxx - drop explicit initialization of struct i2c_device_id::driver_data to 0
Input: adp5588-keys - fix check on return code
Input: Convert comma to semicolon
Input: i8042 - add TUXEDO Stellaris 15 Slim Gen6 AMD to i8042 quirk table
Input: i8042 - add another board name for TUXEDO Stellaris Gen5 AMD line
Input: tegra-kbc - use of_property_read_variable_u32_array() and of_property_present()
Input: ps2-gpio - use IRQF_NO_AUTOEN flag in request_irq()
Input: ims-pcu - fix calling interruptible mutex
Input: zforce_ts - switch to using asynchronous probing
Input: zforce_ts - remove assert/deassert wrappers
Input: zforce_ts - do not hardcode interrupt level
Input: zforce_ts - switch to using devm_regulator_get_enable()
Input: zforce_ts - stop treating VDD regulator as optional
Input: zforce_ts - make zforce_idtable constant
Input: zforce_ts - use dev_err_probe() where appropriate
Input: zforce_ts - do not ignore errors when acquiring regulator
Input: zforce_ts - make parsing of contacts less confusing
Input: zforce_ts - switch to using get_unaligned_le16
Input: zforce_ts - use guard notation when acquiring mutexes
...

Documentation/devicetree/bindings/input/adi,adp5588.yaml

···
   interrupt-controller:
     description:
       This property applies if either keypad,num-rows lower than 8 or
-      keypad,num-columns lower than 10.
+      keypad,num-columns lower than 10. This property is optional if
+      keypad,num-rows or keypad,num-columns are not specified as the
+      device is then configured to be used purely for gpio during which
+      interrupts may or may not be utilized.
 
   '#interrupt-cells':
     const: 2
···
     minItems: 1
     maxItems: 2
 
+dependencies:
+  keypad,num-rows:
+    - linux,keymap
+    - keypad,num-columns
+  keypad,num-columns:
+    - linux,keymap
+    - keypad,num-rows
+  linux,keymap:
+    - keypad,num-rows
+    - keypad,num-columns
+    - interrupts
+  interrupt-controller:
+    - interrupts
+
 required:
   - compatible
   - reg
-  - interrupts
-  - keypad,num-rows
-  - keypad,num-columns
-  - linux,keymap
 
 unevaluatedProperties: false
 
···
             >;
         };
     };
+
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        gpio@34 {
+            compatible = "adi,adp5588";
+            reg = <0x34>;
+
+            #gpio-cells = <2>;
+            gpio-controller;
+        };
+    };
+
 ...

Documentation/devicetree/bindings/input/rotary-encoder.txt

···
-Rotary encoder DT bindings
-
-Required properties:
-- gpios: a spec for at least two GPIOs to be used, most significant first
-
-Optional properties:
-- linux,axis: the input subsystem axis to map to this rotary encoder.
-  Defaults to 0 (ABS_X / REL_X)
-- rotary-encoder,steps: Number of steps in a full turnaround of the
-  encoder. Only relevant for absolute axis. Defaults to 24 which is a
-  typical value for such devices.
-- rotary-encoder,relative-axis: register a relative axis rather than an
-  absolute one. Relative axis will only generate +1/-1 events on the input
-  device, hence no steps need to be passed.
-- rotary-encoder,rollover: Automatic rollover when the rotary value becomes
-  greater than the specified steps or smaller than 0. For absolute axis only.
-- rotary-encoder,steps-per-period: Number of steps (stable states) per period.
-  The values have the following meaning:
-  1: Full-period mode (default)
-  2: Half-period mode
-  4: Quarter-period mode
-- wakeup-source: Boolean, rotary encoder can wake up the system.
-- rotary-encoder,encoding: String, the method used to encode steps.
-  Supported are "gray" (the default and more common) and "binary".
-
-Deprecated properties:
-- rotary-encoder,half-period: Makes the driver work on half-period mode.
-  This property is deprecated. Instead, a 'steps-per-period ' value should
-  be used, such as "rotary-encoder,steps-per-period = <2>".
-
-See Documentation/input/devices/rotary-encoder.rst for more information.
-
-Example:
-
-		rotary@0 {
-			compatible = "rotary-encoder";
-			gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
-			linux,axis = <0>; /* REL_X */
-			rotary-encoder,encoding = "gray";
-			rotary-encoder,relative-axis;
-		};
-
-		rotary@1 {
-			compatible = "rotary-encoder";
-			gpios = <&gpio 21 0>, <&gpio 22 0>;
-			linux,axis = <1>; /* ABS_Y */
-			rotary-encoder,steps = <24>;
-			rotary-encoder,encoding = "binary";
-			rotary-encoder,rollover;
-		};

Documentation/devicetree/bindings/input/rotary-encoder.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/rotary-encoder.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rotary encoder
+
+maintainers:
+  - Frank Li <[e-mail]>
+
+description:
+  See Documentation/input/devices/rotary-encoder.rst for more information.
+
+properties:
+  compatible:
+    const: rotary-encoder
+
+  gpios:
+    minItems: 2
+
+  linux,axis:
+    default: 0
+    description:
+      the input subsystem axis to map to this rotary encoder.
+      Defaults to 0 (ABS_X / REL_X)
+
+  rotary-encoder,steps:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 24
+    description:
+      Number of steps in a full turnaround of the
+      encoder. Only relevant for absolute axis. Defaults to 24 which is a
+      typical value for such devices.
+
+  rotary-encoder,relative-axis:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      register a relative axis rather than an
+      absolute one. Relative axis will only generate +1/-1 events on the input
+      device, hence no steps need to be passed.
+
+  rotary-encoder,rollover:
+    $ref: /schemas/types.yaml#/definitions/int32
+    description:
+      Automatic rollover when the rotary value becomes
+      greater than the specified steps or smaller than 0. For absolute axis only.
+
+  rotary-encoder,steps-per-period:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 1
+    enum: [1, 2, 4]
+    description: |
+      Number of steps (stable states) per period.
+      The values have the following meaning:
+      1: Full-period mode (default)
+      2: Half-period mode
+      4: Quarter-period mode
+
+  wakeup-source: true
+
+  rotary-encoder,encoding:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: the method used to encode steps.
+    enum: [gray, binary]
+
+  rotary-encoder,half-period:
+    $ref: /schemas/types.yaml#/definitions/flag
+    deprecated: true
+    description:
+      Makes the driver work on half-period mode.
+      This property is deprecated. Instead, a 'steps-per-period ' value should
+      be used, such as "rotary-encoder,steps-per-period = <2>".
+
+required:
+  - compatible
+  - gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    rotary {
+        compatible = "rotary-encoder";
+        gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
+        linux,axis = <0>; /* REL_X */
+        rotary-encoder,encoding = "gray";
+        rotary-encoder,relative-axis;
+    };
+

Documentation/devicetree/bindings/input/touchscreen/ad7879.txt

···
-* Analog Devices AD7879(-1)/AD7889(-1) touchscreen interface (SPI/I2C)
-
-Required properties:
-- compatible			: for SPI slave, use "adi,ad7879"
-				  for I2C slave, use "adi,ad7879-1"
-- reg				: SPI chipselect/I2C slave address
-				  See spi-bus.txt for more SPI slave properties
-- interrupts			: touch controller interrupt
-- touchscreen-max-pressure	: maximum reported pressure
-- adi,resistance-plate-x	: total resistance of X-plate (for pressure
-				  calculation)
-Optional properties:
-- touchscreen-swapped-x-y	: X and Y axis are swapped (boolean)
-- adi,first-conversion-delay	: 0-12: In 128us steps (starting with 128us)
-				  13  : 2.560ms
-				  14  : 3.584ms
-				  15  : 4.096ms
-				  This property has to be a '/bits/ 8' value
-- adi,acquisition-time		: 0: 2us
-				  1: 4us
-				  2: 8us
-				  3: 16us
-				  This property has to be a '/bits/ 8' value
-- adi,median-filter-size	: 0: disabled
-				  1: 4 measurements
-				  2: 8 measurements
-				  3: 16 measurements
-				  This property has to be a '/bits/ 8' value
-- adi,averaging			: 0: 2 middle values (1 if median disabled)
-				  1: 4 middle values
-				  2: 8 middle values
-				  3: 16 values
-				  This property has to be a '/bits/ 8' value
-- adi,conversion-interval:	: 0    : convert one time only
-				  1-255: 515us + val * 35us (up to 9.440ms)
-				  This property has to be a '/bits/ 8' value
-- gpio-controller		: Switch AUX/VBAT/GPIO pin to GPIO mode
-
-Example:
-
-	touchscreen0@2c {
-		compatible = "adi,ad7879-1";
-		reg = <0x2c>;
-		interrupt-parent = <&gpio1>;
-		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
-		touchscreen-max-pressure = <4096>;
-		adi,resistance-plate-x = <120>;
-		adi,first-conversion-delay = /bits/ 8 <3>;
-		adi,acquisition-time = /bits/ 8 <1>;
-		adi,median-filter-size = /bits/ 8 <2>;
-		adi,averaging = /bits/ 8 <1>;
-		adi,conversion-interval = /bits/ 8 <255>;
-	};
-
-	touchscreen1@1 {
-		compatible = "adi,ad7879";
-		spi-max-frequency = <5000000>;
-		reg = <1>;
-		spi-cpol;
-		spi-cpha;
-		gpio-controller;
-		interrupt-parent = <&gpio1>;
-		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
-		touchscreen-max-pressure = <4096>;
-		adi,resistance-plate-x = <120>;
-		adi,first-conversion-delay = /bits/ 8 <3>;
-		adi,acquisition-time = /bits/ 8 <1>;
-		adi,median-filter-size = /bits/ 8 <2>;
-		adi,averaging = /bits/ 8 <1>;
-		adi,conversion-interval = /bits/ 8 <255>;
-	};

Documentation/devicetree/bindings/input/touchscreen/adi,ad7879.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/adi,ad7879.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7879(-1)/AD7889(-1) touchscreen interface (SPI/I2C)
+
+maintainers:
+  - Frank Li <[e-mail]>
+
+properties:
+  compatible:
+    description: |
+      for SPI slave, use "adi,ad7879"
+      for I2C slave, use "adi,ad7879-1"
+    enum:
+      - adi,ad7879
+      - adi,ad7879-1
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  touchscreen-max-pressure:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: maximum reported pressure
+
+  adi,resistance-plate-x:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: total resistance of X-plate (for pressure calculation)
+
+  touchscreen-swapped-x-y:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: X and Y axis are swapped (boolean)
+
+  adi,first-conversion-delay:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    default: 0
+    minimum: 0
+    maximum: 15
+    description: |
+      0-12: In 128us steps (starting with 128us)
+      13  : 2.560ms
+      14  : 3.584ms
+      15  : 4.096ms
+      This property has to be a '/bits/ 8' value
+
+  adi,acquisition-time:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    default: 0
+    enum: [0, 1, 2, 3]
+    description: |
+      0: 2us
+      1: 4us
+      2: 8us
+      3: 16us
+      This property has to be a '/bits/ 8' value
+
+  adi,median-filter-size:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    default: 0
+    enum: [0, 1, 2, 3]
+    description: |
+      0: disabled
+      1: 4 measurements
+      2: 8 measurements
+      3: 16 measurements
+      This property has to be a '/bits/ 8' value
+
+  adi,averaging:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    default: 0
+    enum: [0, 1, 2, 3]
+    description: |
+      0: 2 middle values (1 if median disabled)
+      1: 4 middle values
+      2: 8 middle values
+      3: 16 values
+      This property has to be a '/bits/ 8' value
+
+  adi,conversion-interval:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    default: 0
+    description: |
+      0    : convert one time only
+      1-255: 515us + val * 35us (up to 9.440ms)
+      This property has to be a '/bits/ 8' value
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen0@2c {
+            compatible = "adi,ad7879-1";
+            reg = <0x2c>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+            touchscreen-max-pressure = <4096>;
+            adi,resistance-plate-x = <120>;
+            adi,first-conversion-delay = /bits/ 8 <3>;
+            adi,acquisition-time = /bits/ 8 <1>;
+            adi,median-filter-size = /bits/ 8 <2>;
+            adi,averaging = /bits/ 8 <1>;
+            adi,conversion-interval = /bits/ 8 <255>;
+        };
+    };
+
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen1@1 {
+            compatible = "adi,ad7879";
+            reg = <1>;
+            spi-max-frequency = <5000000>;
+            gpio-controller;
+            #gpio-cells = <1>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+            touchscreen-max-pressure = <4096>;
+            adi,resistance-plate-x = <120>;
+            adi,first-conversion-delay = /bits/ 8 <3>;
+            adi,acquisition-time = /bits/ 8 <1>;
+            adi,median-filter-size = /bits/ 8 <2>;
+            adi,averaging = /bits/ 8 <1>;
+            adi,conversion-interval = /bits/ 8 <255>;
+        };
+    };

Documentation/devicetree/bindings/input/touchscreen/ads7846.txt

···
-Device tree bindings for TI's ADS7843, ADS7845, ADS7846, ADS7873, TSC2046
-SPI driven touch screen controllers.
-
-The node for this driver must be a child node of a SPI controller, hence
-all mandatory properties described in
-
-	Documentation/devicetree/bindings/spi/spi-bus.txt
-
-must be specified.
-
-Additional required properties:
-
-	compatible		Must be one of the following, depending on the
-				model:
-					"ti,tsc2046"
-					"ti,ads7843"
-					"ti,ads7845"
-					"ti,ads7846"
-					"ti,ads7873"
-
-	interrupts		An interrupt node describing the IRQ line the chip's
-				!PENIRQ pin is connected to.
-	vcc-supply		A regulator node for the supply voltage.
-
-
-Optional properties:
-
-	ti,vref-delay-usecs		vref supply delay in usecs, 0 for
-					external vref (u16).
-	ti,vref-mv			The VREF voltage, in millivolts (u16).
-					Set to 0 to use internal references
-					(ADS7846).
-	ti,keep-vref-on			set to keep vref on for differential
-					measurements as well
-	ti,settle-delay-usec		Settling time of the analog signals;
-					a function of Vcc and the capacitance
-					on the X/Y drivers.  If set to non-zero,
-					two samples are taken with settle_delay
-					us apart, and the second one is used.
-					~150 uSec with 0.01uF caps (u16).
-	ti,penirq-recheck-delay-usecs	If set to non-zero, after samples are
-					taken this delay is applied and penirq
-					is rechecked, to help avoid false
-					events.  This value is affected by the
-					material used to build the touch layer
-					(u16).
-	ti,x-plate-ohms			Resistance of the X-plate,
-					in Ohms (u16).
-	ti,y-plate-ohms			Resistance of the Y-plate,
-					in Ohms (u16).
-	ti,x-min			Minimum value on the X axis (u16).
-	ti,y-min			Minimum value on the Y axis (u16).
-	ti,debounce-tol			Tolerance used for filtering (u16).
-	ti,debounce-rep			Additional consecutive good readings
-					required after the first two (u16).
-	ti,pendown-gpio-debounce	Platform specific debounce time for the
-					pendown-gpio (u32).
-	pendown-gpio			GPIO handle describing the pin the !PENIRQ
-					line is connected to.
-	ti,hsync-gpios			GPIO line to poll for hsync
-	wakeup-source			use any event on touchscreen as wakeup event.
-					(Legacy property support: "linux,wakeup")
-	touchscreen-size-x		General touchscreen binding, see [1].
-	touchscreen-size-y		General touchscreen binding, see [1].
-	touchscreen-max-pressure	General touchscreen binding, see [1].
-	touchscreen-min-pressure	General touchscreen binding, see [1].
-	touchscreen-average-samples	General touchscreen binding, see [1].
-	touchscreen-inverted-x		General touchscreen binding, see [1].
-	touchscreen-inverted-y		General touchscreen binding, see [1].
-	touchscreen-swapped-x-y		General touchscreen binding, see [1].
-
-[1] All general touchscreen properties are described in
-    Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt.
-
-Deprecated properties:
-
-	ti,swap-xy			swap x and y axis
-	ti,x-max			Maximum value on the X axis (u16).
-	ti,y-max			Maximum value on the Y axis (u16).
-	ti,pressure-min			Minimum reported pressure value
-					(threshold) - u16.
-	ti,pressure-max			Maximum reported pressure value (u16).
-	ti,debounce-max			Max number of additional readings per
-					sample (u16).
-
-Example for a TSC2046 chip connected to an McSPI controller of an OMAP SoC::
-
-	spi_controller {
-		tsc2046@0 {
-			reg = <0>;	/* CS0 */
-			compatible = "ti,tsc2046";
-			interrupt-parent = <&gpio1>;
-			interrupts = <8 0>;	/* BOOT6 / GPIO 8 */
-			spi-max-frequency = <1000000>;
-			pendown-gpio = <&gpio1 8 0>;
-			vcc-supply = <&reg_vcc3>;
-
-			ti,x-min = /bits/ 16 <0>;
-			ti,x-max = /bits/ 16 <8000>;
-			ti,y-min = /bits/ 16 <0>;
-			ti,y-max = /bits/ 16 <4800>;
-			ti,x-plate-ohms = /bits/ 16 <40>;
-			ti,pressure-max = /bits/ 16 <255>;
-
-			wakeup-source;
-		};
-	};

Documentation/devicetree/bindings/input/touchscreen/azoteq,iqs7211.yaml

···
             #address-cells = <1>;
             #size-cells = <0>;
 
-            touch@56 {
+            touchscreen@56 {
                     compatible = "azoteq,iqs7210a";
                     reg = <0x56>;
                     irq-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
···
             #address-cells = <1>;
             #size-cells = <0>;
 
-            touch@56 {
+            touchscreen@56 {
                     compatible = "azoteq,iqs7211e";
                     reg = <0x56>;
                     irq-gpios = <&gpio 4 (GPIO_ACTIVE_LOW |

Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt

···
-* Toradex Colibri VF50 Touchscreen driver
-
-Required Properties:
-- compatible must be toradex,vf50-touchscreen
-- io-channels: adc channels being used by the Colibri VF50 module
-    IIO ADC for Y-, X-, Y+, X+ connections
-- xp-gpios: FET gate driver for input of X+
-- xm-gpios: FET gate driver for input of X-
-- yp-gpios: FET gate driver for input of Y+
-- ym-gpios: FET gate driver for input of Y-
-- interrupts: pen irq interrupt for touch detection, signal from X plate
-- pinctrl-names: "idle", "default"
-- pinctrl-0: pinctrl node for pen/touch detection, pinctrl must provide
-    pull-up resistor on X+, X-.
-- pinctrl-1: pinctrl node for X/Y and pressure measurement (ADC) state pinmux
-- vf50-ts-min-pressure: pressure level at which to stop measuring X/Y values
-
-Example:
-
-	touchctrl: vf50_touchctrl {
-		compatible = "toradex,vf50-touchscreen";
-		io-channels = <&adc1 0>,<&adc0 0>,
-				<&adc0 1>,<&adc1 2>;
-		xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
-		xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
-		yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
-		ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
-		interrupt-parent = <&gpio0>;
-		interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
-		pinctrl-names = "idle","default";
-		pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>;
-		pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>;
-		vf50-ts-min-pressure = <200>;
-	};

Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml

···
     i2c {
       #address-cells = <1>;
       #size-cells = <0>;
-      edt-ft5x06@38 {
+      touchscreen@38 {
         compatible = "edt,edt-ft5406";
         reg = <0x38>;
         interrupt-parent = <&gpio2>;

Documentation/devicetree/bindings/input/touchscreen/goodix.yaml

···
     i2c {
       #address-cells = <1>;
       #size-cells = <0>;
-      gt928@5d {
+      touchscreen@5d {
         compatible = "goodix,gt928";
         reg = <0x5d>;
         interrupt-parent = <&gpio>;

Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/ti,ads7843.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI's SPI driven touch screen controllers
+
+maintainers:
+  - Alexander Stein <[e-mail]>
+  - Dmitry Torokhov <[e-mail]>
+  - Marek Vasut <[e-mail]>
+
+description:
+  TI's ADS7843, ADS7845, ADS7846, ADS7873, TSC2046 SPI driven touch screen
+  controllers.
+
+properties:
+  compatible:
+    enum:
+      - ti,ads7843
+      - ti,ads7845
+      - ti,ads7846
+      - ti,ads7873
+      - ti,tsc2046
+
+  interrupts:
+    maxItems: 1
+
+  pendown-gpio:
+    maxItems: 1
+    description:
+      GPIO handle describing the pin the !PENIRQ line is connected to.
+
+  vcc-supply:
+    description:
+      A regulator node for the supply voltage.
+
+  wakeup-source: true
+
+  ti,debounce-max:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Max number of additional readings per sample.
+
+  ti,debounce-rep:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Additional consecutive good readings required after the first two.
+
+  ti,debounce-tol:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Tolerance used for filtering.
+
+  ti,hsync-gpios:
+    maxItems: 1
+    description:
+      GPIO line to poll for hsync.
+
+  ti,keep-vref-on:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Set to keep Vref on for differential measurements as well.
+
+  ti,pendown-gpio-debounce:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Platform specific debounce time for the pendown-gpio.
+
+  ti,penirq-recheck-delay-usecs:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      If set to non-zero, after samples are taken this delay is applied and
+      penirq is rechecked, to help avoid false events.  This value is
+      affected by the material used to build the touch layer.
+
+  ti,pressure-max:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Maximum reported pressure value.
+
+  ti,pressure-min:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Minimum reported pressure value (threshold).
+
+  ti,settle-delay-usec:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Settling time of the analog signals; a function of Vcc and the
+      capacitance on the X/Y drivers.  If set to non-zero, two samples are
+      taken with settle_delay us apart, and the second one is used. ~150
+      uSec with 0.01uF caps.
+
+  ti,swap-xy:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Swap x and y axis.
+
+  ti,vref-delay-usecs:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Vref supply delay in usecs, 0 for external Vref.
+
+  ti,vref-mv:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      The VREF voltage, in millivolts.
+      Set to 0 to use internal references (ADS7846).
+
+  ti,x-plate-ohms:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Resistance of the X-plate, in Ohms.
+
+  ti,x-max:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Maximum value on the X axis.
+
+  ti,x-min:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Minimum value on the X axis.
+
+  ti,y-plate-ohms:
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Resistance of the Y-plate, in Ohms.
+
+  ti,y-max:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Maximum value on the Y axis.
+
+  ti,y-min:
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint16
+    description:
+      Minimum value on the Y axis.
+
+required:
+  - compatible
+  - reg
+
+allOf:
+  - $ref: touchscreen.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi{
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen@0 {
+           compatible = "ti,tsc2046";
+           reg = <0>;	/* CS0 */
+           interrupt-parent = <&gpio1>;
+           interrupts = <8 0>;	/* BOOT6 / GPIO 8 */
+           pendown-gpio = <&gpio1 8 0>;
+           spi-max-frequency = <1000000>;
+           vcc-supply = <&reg_vcc3>;
+           wakeup-source;
+
+           ti,pressure-max = /bits/ 16 <255>;
+           ti,x-max = /bits/ 16 <8000>;
+           ti,x-min = /bits/ 16 <0>;
+           ti,x-plate-ohms = /bits/ 16 <40>;
+           ti,y-max = /bits/ 16 <4800>;
+           ti,y-min = /bits/ 16 <0>;
+       };
+    };

Documentation/devicetree/bindings/input/touchscreen/toradex,vf50-touchscreen.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/toradex,vf50-touchscreen.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Toradex Colibri VF50 Touchscreen
+
+maintainers:
+  - Dmitry Torokhov <[e-mail]>
+  - Sanchayan Maity <[e-mail]>
+
+properties:
+  compatible:
+    const: toradex,vf50-touchscreen
+
+  interrupts:
+    maxItems: 1
+
+  io-channels:
+    maxItems: 4
+    description:
+      adc channels being used by the Colibri VF50 module
+      IIO ADC for Y-, X-, Y+, X+ connections
+
+  xp-gpios:
+    description: FET gate driver for input of X+
+
+  xm-gpios:
+    description: FET gate driver for input of X-
+
+  yp-gpios:
+    description: FET gate driver for input of Y+
+
+  ym-gpios:
+    description: FET gate driver for input of Y-
+
+  vf50-ts-min-pressure:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 50
+    maximum: 2000
+    description: pressure level at which to stop measuring X/Y values
+
+required:
+  - compatible
+  - io-channels
+  - xp-gpios
+  - xm-gpios
+  - yp-gpios
+  - ym-gpios
+  - interrupts
+  - vf50-ts-min-pressure
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    touchscreen {
+        compatible = "toradex,vf50-touchscreen";
+        interrupt-parent = <&gpio0>;
+        interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+        io-channels = <&adc1 0>, <&adc0 0>, <&adc0 1>, <&adc1 2>;
+        xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+        xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
+        yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+        ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+        pinctrl-names = "idle", "default";
+        pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>;
+        pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>;
+        vf50-ts-min-pressure = <200>;
+    };

Documentation/devicetree/bindings/input/touchscreen/zinitix,bt400.yaml

···
 
 allOf:
   - $ref: touchscreen.yaml#
+  - $ref: ../input.yaml#
 
 properties:
   $nodename:
···
       1 and 2. Mode 2 is the default and preferred.
     $ref: /schemas/types.yaml#/definitions/uint32
     enum: [1, 2]
+
+  linux,keycodes:
+    description:
+      This property specifies an array of keycodes assigned to the
+      touch-keys that can be present in some touchscreen configurations.
+      If the touch-keys are enabled, controller firmware will assign some
+      touch sense lines to those keys.
+    minItems: 1
+    maxItems: 8
 
   touchscreen-size-x: true
   touchscreen-size-y: true

Documentation/devicetree/bindings/power/wakeup-source.txt

···
 2. "has-tpo"			Documentation/devicetree/bindings/rtc/rtc-opal.txt
 3. "linux,wakeup"		Documentation/devicetree/bindings/input/gpio-matrix-keypad.txt
 				Documentation/devicetree/bindings/mfd/tc3589x.txt
-				Documentation/devicetree/bindings/input/touchscreen/ads7846.txt
+				Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml
 4. "linux,keypad-wakeup"	Documentation/devicetree/bindings/input/qcom,pm8921-keypad.yaml
 5. "linux,input-wakeup"		Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml
 6. "nvidia,wakeup-source"	Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt

MAINTAINERS

···
 F:	Documentation/input/
 F:	drivers/input/
 F:	include/dt-bindings/input/
+F:	include/linux/gameport.h
+F:	include/linux/i8042.h
 F:	include/linux/input.h
 F:	include/linux/input/
+F:	include/linux/libps2.h
+F:	include/linux/serio.h
+F:	include/uapi/linux/gameport.h
 F:	include/uapi/linux/input-event-codes.h
 F:	include/uapi/linux/input.h
+F:	include/uapi/linux/serio.h
+F:	include/uapi/linux/uinput.h
 
 INPUT MULTITOUCH (MT) PROTOCOL
 M:	Henrik Rydberg <[e-mail]>
···
 
 YEALINK PHONE DRIVER
 M:	Henk Vergonet <[e-mail]>
-L:	[e-mail]
 S:	Maintained
 F:	Documentation/input/devices/yealink.rst
 F:	drivers/input/misc/yealink.*

arch/arm/mach-pxa/spitz.c

···
 	KEY(6, 8, KEY_RIGHT),
 };
 
-static const struct matrix_keymap_data spitz_keymap_data = {
-	.keymap		= spitz_keymap,
-	.keymap_size	= ARRAY_SIZE(spitz_keymap),
+static const struct software_node_ref_args spitz_mkp_row_gpios[] = {
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 12, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 17, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 91, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 34, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 36, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 38, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 39, GPIO_ACTIVE_HIGH),
 };
 
-static const uint32_t spitz_row_gpios[] =
-		{ 12, 17, 91, 34, 36, 38, 39 };
-static const uint32_t spitz_col_gpios[] =
-		{ 88, 23, 24, 25, 26, 27, 52, 103, 107, 108, 114 };
-
-static struct matrix_keypad_platform_data spitz_mkp_pdata = {
-	.keymap_data		= &spitz_keymap_data,
-	.row_gpios		= spitz_row_gpios,
-	.col_gpios		= spitz_col_gpios,
-	.num_row_gpios		= ARRAY_SIZE(spitz_row_gpios),
-	.num_col_gpios		= ARRAY_SIZE(spitz_col_gpios),
-	.col_scan_delay_us	= 10,
-	.debounce_ms		= 10,
-	.wakeup			= 1,
+static const struct software_node_ref_args spitz_mkp_col_gpios[] = {
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 88, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 23, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 24, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 25, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 26, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 27, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 52, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 103, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 107, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 108, GPIO_ACTIVE_HIGH),
+	SOFTWARE_NODE_REFERENCE(&pxa2xx_gpiochip_node, 114, GPIO_ACTIVE_HIGH),
 };
 
-static struct platform_device spitz_mkp_device = {
+static const struct property_entry spitz_mkp_properties[] = {
+	PROPERTY_ENTRY_U32_ARRAY("linux,keymap", spitz_keymap),
+	PROPERTY_ENTRY_REF_ARRAY("row-gpios", spitz_mkp_row_gpios),
+	PROPERTY_ENTRY_REF_ARRAY("col-gpios", spitz_mkp_col_gpios),
+	PROPERTY_ENTRY_U32("col-scan-delay-us", 10),
+	PROPERTY_ENTRY_U32("debounce-delay-ms", 10),
+	PROPERTY_ENTRY_BOOL("wakeup-source"),
+	{ }
+};
+
+static const struct platform_device_info spitz_mkp_info __initconst = {
 	.name		= "matrix-keypad",
-	.id		= -1,
-	.dev		= {
-		.platform_data	= &spitz_mkp_pdata,
-	},
+	.id		= PLATFORM_DEVID_NONE,
+	.properties	= spitz_mkp_properties,
 };
+
 
 static void __init spitz_mkp_init(void)
 {
-	platform_device_register(&spitz_mkp_device);
+	struct platform_device *pd;
+	int err;
+
+	pd = platform_device_register_full(&spitz_mkp_info);
+	err = PTR_ERR_OR_ZERO(pd);
+	if (err)
+		pr_err("failed to create keypad device: %d\n", err);
 }
 #else
 static inline void spitz_mkp_init(void) {}
···
  * GPIO keys
  ******************************************************************************/
 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
-static struct gpio_keys_button spitz_gpio_keys[] = {
-	{
-		.type	= EV_PWR,
-		.code	= KEY_SUSPEND,
-		.gpio	= SPITZ_GPIO_ON_KEY,
-		.desc	= "On Off",
-		.wakeup	= 1,
-	},
-	/* Two buttons detecting the lid state */
-	{
-		.type	= EV_SW,
-		.code	= 0,
-		.gpio	= SPITZ_GPIO_SWA,
-		.desc	= "Display Down",
-	},
-	{
-		.type	= EV_SW,
-		.code	= 1,
-		.gpio	= SPITZ_GPIO_SWB,
-		.desc	= "Lid Closed",
-	},
+static const struct software_node spitz_gpio_keys_node = {
+	.name = "spitz-gpio-keys",
 };
 
-static struct gpio_keys_platform_data spitz_gpio_keys_platform_data = {
-	.buttons	= spitz_gpio_keys,
-	.nbuttons	= ARRAY_SIZE(spitz_gpio_keys),
+static const struct property_entry spitz_suspend_key_props[] = {
+	PROPERTY_ENTRY_U32("linux,input-type", EV_PWR),
+	PROPERTY_ENTRY_U32("linux,code", KEY_SUSPEND),
+	PROPERTY_ENTRY_GPIO("gpios", &pxa2xx_gpiochip_node,
+			    SPITZ_GPIO_ON_KEY, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_STRING("label", "On Off"),
+	PROPERTY_ENTRY_BOOL("wakeup-source"),
+	{ }
 };
 
-static struct platform_device spitz_gpio_keys_device = {
-	.name	= "gpio-keys",
-	.id	= -1,
-	.dev	= {
-		.platform_data	= &spitz_gpio_keys_platform_data,
-	},
+static const struct software_node spitz_suspend_key_node = {
+	.parent = &spitz_gpio_keys_node,
+	.properties = spitz_suspend_key_props,
+};
+
+static const struct property_entry spitz_sw1_props[] = {
+	PROPERTY_ENTRY_U32("linux,input-type", EV_SW),
+	PROPERTY_ENTRY_U32("linux,code", 0),
+	PROPERTY_ENTRY_GPIO("gpios", &pxa2xx_gpiochip_node,
+			    SPITZ_GPIO_SWA, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_STRING("label", "Display Down"),
+	{ }
+};
+
+static const struct software_node spitz_sw1_node = {
+	.parent = &spitz_gpio_keys_node,
+	.properties = spitz_sw1_props,
+};
+
+static const struct property_entry spitz_sw2_props[] = {
+	PROPERTY_ENTRY_U32("linux,input-type", EV_SW),
+	PROPERTY_ENTRY_U32("linux,code", 1),
+	PROPERTY_ENTRY_GPIO("gpios", &pxa2xx_gpiochip_node,
+			    SPITZ_GPIO_SWB, GPIO_ACTIVE_HIGH),
+	PROPERTY_ENTRY_STRING("label", "Lid Closed"),
+	{ }
+};
+
+static const struct software_node spitz_sw2_node = {
+	.parent = &spitz_gpio_keys_node,
+	.properties = spitz_sw2_props,
+};
+
+static const struct software_node *spitz_gpio_keys_swnodes[] = {
+	&spitz_gpio_keys_node,
+	&spitz_suspend_key_node,
+	&spitz_sw1_node,
+	&spitz_sw2_node,
+	NULL
 };
 
 static void __init spitz_keys_init(void)
 {
-	platform_device_register(&spitz_gpio_keys_device);
+	struct platform_device_info keys_info = {
+		.name	= "gpio-keys",
+		.id	= PLATFORM_DEVID_NONE,
+	};
+	struct platform_device *pd;
+	int err;
+
+	err = software_node_register_node_group(spitz_gpio_keys_swnodes);
+	if (err) {
+		pr_err("failed to register gpio-keys software nodes: %d\n", err);
+		return;
+	}
+
+	keys_info.fwnode = software_node_fwnode(&spitz_gpio_keys_node);
+
+	pd = platform_device_register_full(&keys_info);
+	err = PTR_ERR_OR_ZERO(pd);
+	if (err)
+		pr_err("failed to create gpio-keys device: %d\n", err);
 }
 #else
 static inline void spitz_keys_init(void) {}

drivers/input/evdev.c

···
 	struct input_event event;
 	int retval = 0;
 
+	/*
+	 * Limit amount of data we inject into the input subsystem so that
+	 * we do not hold evdev->mutex for too long. 4096 bytes corresponds
+	 * to 170 input events.
+	 */
+	count = min(count, 4096);
+
 	if (count != 0 && count < input_event_size())
 		return -EINVAL;
 

drivers/input/input.c

···
 		mt_slots = dev->mt->num_slots;
 	} else if (test_bit(ABS_MT_TRACKING_ID, dev->absbit)) {
 		mt_slots = dev->absinfo[ABS_MT_TRACKING_ID].maximum -
-			   dev->absinfo[ABS_MT_TRACKING_ID].minimum + 1,
+			   dev->absinfo[ABS_MT_TRACKING_ID].minimum + 1;
 		mt_slots = clamp(mt_slots, 2, 32);
 	} else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) {
 		mt_slots = 2;

drivers/input/joystick/adc-joystick.c

···
 static int adc_joystick_set_axes(struct device *dev, struct adc_joystick *joy)
 {
 	struct adc_joystick_axis *axes = joy->axes;
-	struct fwnode_handle *child;
 	s32 range[2], fuzz, flat;
 	unsigned int num_axes;
 	int error, i;
···
 		return -EINVAL;
 	}
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		error = fwnode_property_read_u32(child, "reg", &i);
 		if (error) {
 			dev_err(dev, "reg invalid or missing\n");
-			goto err_fwnode_put;
+			return error;
 		}
 
 		if (i >= num_axes) {
-			error = -EINVAL;
 			dev_err(dev, "No matching axis for reg %d\n", i);
-			goto err_fwnode_put;
+			return -EINVAL;
 		}
 
 		error = fwnode_property_read_u32(child, "linux,code",
 						 &axes[i].code);
 		if (error) {
 			dev_err(dev, "linux,code invalid or missing\n");
-			goto err_fwnode_put;
+			return error;
 		}
 
 		error = fwnode_property_read_u32_array(child, "abs-range",
 						       range, 2);
 		if (error) {
 			dev_err(dev, "abs-range invalid or missing\n");
-			goto err_fwnode_put;
+			return error;
 		}
 
 		if (range[0] > range[1]) {
···
 	}
 
 	return 0;
-
-err_fwnode_put:
-	fwnode_handle_put(child);
-	return error;
 }
 
 

drivers/input/keyboard/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called max7359_keypad.
 
-config KEYBOARD_MCS
-	tristate "MELFAS MCS Touchkey"
-	depends on I2C
-	help
-	  Say Y here if you have the MELFAS MCS5000/5080 touchkey controller
-	  chip in your system.
-
-	  If unsure, say N.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called mcs_touchkey.
-
 config KEYBOARD_MPR121
 	tristate "Freescale MPR121 Touchkey"
 	depends on I2C
···
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called newtonkbd.
-
-config KEYBOARD_NOMADIK
-	tristate "ST-Ericsson Nomadik SKE keyboard"
-	depends on (ARCH_NOMADIK || ARCH_U8500 || COMPILE_TEST)
-	select INPUT_MATRIXKMAP
-	help
-	  Say Y here if you want to use a keypad provided on the SKE controller
-	  used on the Ux500 and Nomadik platforms
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called nmk-ske-keypad.
 
 config KEYBOARD_NSPIRE
 	tristate "TI-NSPIRE built-in keyboard"

drivers/input/keyboard/Makefile

···
 obj-$(CONFIG_KEYBOARD_MAPLE)		+= maple_keyb.o
 obj-$(CONFIG_KEYBOARD_MATRIX)		+= matrix_keypad.o
 obj-$(CONFIG_KEYBOARD_MAX7359)		+= max7359_keypad.o
-obj-$(CONFIG_KEYBOARD_MCS)		+= mcs_touchkey.o
 obj-$(CONFIG_KEYBOARD_MPR121)		+= mpr121_touchkey.o
 obj-$(CONFIG_KEYBOARD_MT6779)		+= mt6779-keypad.o
 obj-$(CONFIG_KEYBOARD_MTK_PMIC) 	+= mtk-pmic-keys.o
 obj-$(CONFIG_KEYBOARD_NEWTON)		+= newtonkbd.o
-obj-$(CONFIG_KEYBOARD_NOMADIK)		+= nomadik-ske-keypad.o
 obj-$(CONFIG_KEYBOARD_NSPIRE)		+= nspire-keypad.o
 obj-$(CONFIG_KEYBOARD_OMAP)		+= omap-keypad.o
 obj-$(CONFIG_KEYBOARD_OMAP4)		+= omap4-keypad.o

drivers/input/keyboard/adc-keys.c

···
 static int adc_keys_load_keymap(struct device *dev, struct adc_keys_state *st)
 {
 	struct adc_keys_button *map;
-	struct fwnode_handle *child;
 	int i;
 
 	st->num_keys = device_get_child_node_count(dev);
···
 		return -ENOMEM;
 
 	i = 0;
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		if (fwnode_property_read_u32(child, "press-threshold-microvolt",
 					     &map[i].voltage)) {
 			dev_err(dev, "Key with invalid or missing voltage\n");
-			fwnode_handle_put(child);
 			return -EINVAL;
 		}
 		map[i].voltage /= 1000;
···
 		if (fwnode_property_read_u32(child, "linux,code",
 					     &map[i].keycode)) {
 			dev_err(dev, "Key with invalid or missing linux,code\n");
-			fwnode_handle_put(child);
 			return -EINVAL;
 		}
 

drivers/input/keyboard/adp5588-keys.c

···
 	u32 cols;
 	u32 unlock_keys[2];
 	int nkeys_unlock;
+	bool gpio_only;
 	unsigned short keycode[ADP5588_KEYMAPSIZE];
 	unsigned char gpiomap[ADP5588_MAXGPIO];
 	struct gpio_chip gc;
···
 	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
 	int val;
 
-	mutex_lock(&kpad->gpio_lock);
+	guard(mutex)(&kpad->gpio_lock);
 
 	if (kpad->dir[bank] & bit)
 		val = kpad->dat_out[bank];
 	else
 		val = adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank);
-
-	mutex_unlock(&kpad->gpio_lock);
 
 	return !!(val & bit);
 }
···
 	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
 	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
 
-	mutex_lock(&kpad->gpio_lock);
+	guard(mutex)(&kpad->gpio_lock);
 
 	if (val)
 		kpad->dat_out[bank] |= bit;
···
 		kpad->dat_out[bank] &= ~bit;
 
 	adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank, kpad->dat_out[bank]);
-
-	mutex_unlock(&kpad->gpio_lock);
 }
 
 static int adp5588_gpio_set_config(struct gpio_chip *chip,  unsigned int off,
···
 	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
 	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
 	bool pull_disable;
-	int ret;
 
 	switch (pinconf_to_config_param(config)) {
 	case PIN_CONFIG_BIAS_PULL_UP:
···
 		return -ENOTSUPP;
 	}
 
-	mutex_lock(&kpad->gpio_lock);
+	guard(mutex)(&kpad->gpio_lock);
 
 	if (pull_disable)
 		kpad->pull_dis[bank] |= bit;
 	else
 		kpad->pull_dis[bank] &= bit;
 
-	ret = adp5588_write(kpad->client, GPIO_PULL1 + bank,
-			    kpad->pull_dis[bank]);
-
-	mutex_unlock(&kpad->gpio_lock);
-
-	return ret;
+	return adp5588_write(kpad->client, GPIO_PULL1 + bank,
+			     kpad->pull_dis[bank]);
 }
 
 static int adp5588_gpio_direction_input(struct gpio_chip *chip, unsigned int off)
···
 	struct adp5588_kpad *kpad = gpiochip_get_data(chip);
 	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
 	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
-	int ret;
 
-	mutex_lock(&kpad->gpio_lock);
+	guard(mutex)(&kpad->gpio_lock);
 
 	kpad->dir[bank] &= ~bit;
-	ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);
-
-	mutex_unlock(&kpad->gpio_lock);
-
-	return ret;
+	return adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);
 }
 
 static int adp5588_gpio_direction_output(struct gpio_chip *chip,
···
 	struct adp5588_kpad *kpad = gpiochip_get_data(chip);
 	unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]);
 	unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]);
-	int ret;
+	int error;
 
-	mutex_lock(&kpad->gpio_lock);
+	guard(mutex)(&kpad->gpio_lock);
 
 	kpad->dir[bank] |= bit;
 
···
 	else
 		kpad->dat_out[bank] &= ~bit;
 
-	ret = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
-			    kpad->dat_out[bank]);
-	if (ret)
-		goto out_unlock;
+	error = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank,
+			      kpad->dat_out[bank]);
+	if (error)
+		return error;
 
-	ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);
+	error = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]);
+	if (error)
+		return error;
 
-out_unlock:
-	mutex_unlock(&kpad->gpio_lock);
-
-	return ret;
+	return 0;
 }
 
 static int adp5588_build_gpiomap(struct adp5588_kpad *kpad)
···
 	kpad->gc.label = kpad->client->name;
 	kpad->gc.owner = THIS_MODULE;
 
-	girq = &kpad->gc.irq;
-	gpio_irq_chip_set_chip(girq, &adp5588_irq_chip);
-	girq->handler = handle_bad_irq;
-	girq->threaded = true;
+	if (device_property_present(dev, "interrupt-controller")) {
+		if (!kpad->client->irq) {
+			dev_err(dev, "Unable to serve as interrupt controller without interrupt");
+			return -EINVAL;
+		}
+
+		girq = &kpad->gc.irq;
+		gpio_irq_chip_set_chip(girq, &adp5588_irq_chip);
+		girq->handler = handle_bad_irq;
+		girq->threaded = true;
+	}
 
 	mutex_init(&kpad->gpio_lock);
 
···
 
 	for (i = 0; i < KEYP_MAX_EVENT; i++) {
 		ret = adp5588_read(client, KEY_EVENTA);
-		if (ret)
+		if (ret < 0)
 			return ret;
 	}
 
···
 {
 	struct i2c_client *client = kpad->client;
 	int ret, i;
+
+	/*
+	 * Check if the device is to be operated purely in GPIO mode. To do
+	 * so, check that no keypad rows or columns have been specified,
+	 * since all GPINS should be configured as GPIO.
+	 */
+	if (!device_property_present(&client->dev, "keypad,num-rows") &&
+	    !device_property_present(&client->dev, "keypad,num-columns")) {
+		/* If purely GPIO, skip keypad setup */
+		kpad->gpio_only = true;
+		return 0;
+	}
 
 	ret = matrix_keypad_parse_properties(&client->dev, &kpad->rows,
 					     &kpad->cols);
···
 	if (error)
 		return error;
 
-	error = devm_request_threaded_irq(&client->dev, client->irq,
-					  adp5588_hard_irq, adp5588_thread_irq,
-					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-					  client->dev.driver->name, kpad);
-	if (error) {
-		dev_err(&client->dev, "failed to request irq %d: %d\n",
-			client->irq, error);
-		return error;
+	if (client->irq) {
+		error = devm_request_threaded_irq(&client->dev, client->irq,
+						  adp5588_hard_irq, adp5588_thread_irq,
+						  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+						  client->dev.driver->name, kpad);
+		if (error) {
+			dev_err(&client->dev, "failed to request irq %d: %d\n",
+				client->irq, error);
+			return error;
+		}
 	}
 
-	dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
+	dev_info(&client->dev, "Rev.%d controller\n", revid);
 	return 0;
 }
 

drivers/input/keyboard/atkbd.c

···
 {
 	struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
 
-	mutex_lock(&atkbd->mutex);
+	guard(mutex)(&atkbd->mutex);
 
 	if (!atkbd->enabled) {
 		/*
···
 		if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
 			atkbd_set_repeat_rate(atkbd);
 	}
-
-	mutex_unlock(&atkbd->mutex);
 }
 
 /*
···
 {
 	struct atkbd *atkbd = atkbd_from_serio(serio);
 	struct serio_driver *drv = serio->drv;
-	int retval = -1;
+	int error;
 
 	if (!atkbd || !drv) {
 		dev_dbg(&serio->dev,
···
 		return -1;
 	}
 
-	mutex_lock(&atkbd->mutex);
+	guard(mutex)(&atkbd->mutex);
 
 	atkbd_disable(atkbd);
 
 	if (atkbd->write) {
-		if (atkbd_probe(atkbd))
-			goto out;
+		error = atkbd_probe(atkbd);
+		if (error)
+			return error;
 
 		if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
-			goto out;
+			return -EIO;
 
 		/*
 		 * Restore LED state and repeat rate. While input core
···
 	if (atkbd->write)
 		atkbd_activate(atkbd);
 
-	retval = 0;
-
- out:
-	mutex_unlock(&atkbd->mutex);
-	return retval;
+	return 0;
 }
 
 static const struct serio_device_id atkbd_serio_ids[] = {
···
 	struct atkbd *atkbd = atkbd_from_serio(serio);
 	int retval;
 
-	retval = mutex_lock_interruptible(&atkbd->mutex);
-	if (retval)
+	scoped_guard(mutex_intr, &atkbd->mutex) {
+		atkbd_disable(atkbd);
+		retval = handler(atkbd, buf, count);
+		atkbd_enable(atkbd);
+
 		return retval;
+	}
 
-	atkbd_disable(atkbd);
-	retval = handler(atkbd, buf, count);
-	atkbd_enable(atkbd);
-
-	mutex_unlock(&atkbd->mutex);
-
-	return retval;
+	return -EINTR;
 }
 
 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)

drivers/input/keyboard/gpio_keys.c

···
 {
 	int n_events = get_n_events_by_type(type);
 	const unsigned long *bitmap = get_bm_events_by_type(ddata->input, type);
-	unsigned long *bits;
 	ssize_t error;
 	int i;
 
-	bits = bitmap_alloc(n_events, GFP_KERNEL);
+	unsigned long *bits __free(bitmap) = bitmap_alloc(n_events, GFP_KERNEL);
 	if (!bits)
 		return -ENOMEM;
 
 	error = bitmap_parselist(buf, bits, n_events);
 	if (error)
-		goto out;
+		return error;
 
 	/* First validate */
-	if (!bitmap_subset(bits, bitmap, n_events)) {
-		error = -EINVAL;
-		goto out;
-	}
+	if (!bitmap_subset(bits, bitmap, n_events))
+		return -EINVAL;
 
 	for (i = 0; i < ddata->pdata->nbuttons; i++) {
 		struct gpio_button_data *bdata = &ddata->data[i];
···
 
 		if (test_bit(*bdata->code, bits) &&
 		    !bdata->button->can_disable) {
-			error = -EINVAL;
-			goto out;
+			return -EINVAL;
 		}
 	}
 
-	mutex_lock(&ddata->disable_lock);
+	guard(mutex)(&ddata->disable_lock);
 
 	for (i = 0; i < ddata->pdata->nbuttons; i++) {
 		struct gpio_button_data *bdata = &ddata->data[i];
···
 			gpio_keys_enable_button(bdata);
 	}
 
-	mutex_unlock(&ddata->disable_lock);
-
-out:
-	bitmap_free(bits);
-	return error;
+	return 0;
 }
 
 #define ATTR_SHOW_FN(name, type, only_disabled)				\
···
 {
 	struct gpio_button_data *bdata = dev_id;
 	struct input_dev *input = bdata->input;
-	unsigned long flags;
 
 	BUG_ON(irq != bdata->irq);
 
-	spin_lock_irqsave(&bdata->lock, flags);
+	guard(spinlock_irqsave)(&bdata->lock);
 
 	if (!bdata->key_pressed) {
 		if (bdata->button->wakeup)
···
 			      ms_to_ktime(bdata->release_delay),
 			      HRTIMER_MODE_REL_HARD);
 out:
-	spin_unlock_irqrestore(&bdata->lock, flags);
 	return IRQ_HANDLED;
 }
 
···
 {
 	struct gpio_keys_platform_data *pdata;
 	struct gpio_keys_button *button;
-	struct fwnode_handle *child;
 	int nbuttons, irq;
 
 	nbuttons = device_get_child_node_count(dev);
···
 
 	device_property_read_string(dev, "label", &pdata->name);
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		if (is_of_node(child)) {
 			irq = of_irq_get_byname(to_of_node(child), "irq");
 			if (irq > 0)
···
 		if (fwnode_property_read_u32(child, "linux,code",
 					     &button->code)) {
 			dev_err(dev, "Button without keycode\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 
···
 		if (error)
 			return error;
 	} else {
-		mutex_lock(&input->mutex);
+		guard(mutex)(&input->mutex);
+
 		if (input_device_enabled(input))
 			gpio_keys_close(input);
-		mutex_unlock(&input->mutex);
 	}
 
 	return 0;
···
 {
 	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
 	struct input_dev *input = ddata->input;
-	int error = 0;
+	int error;
 
 	if (device_may_wakeup(dev)) {
 		gpio_keys_disable_wakeup(ddata);
 	} else {
-		mutex_lock(&input->mutex);
-		if (input_device_enabled(input))
-			error = gpio_keys_open(input);
-		mutex_unlock(&input->mutex);
-	}
+		guard(mutex)(&input->mutex);
 
-	if (error)
-		return error;
+		if (input_device_enabled(input)) {
+			error = gpio_keys_open(input);
+			if (error)
+				return error;
+		}
+	}
 
 	gpio_keys_report_state(ddata);
 	return 0;

drivers/input/keyboard/gpio_keys_polled.c

···
 {
 	struct gpio_keys_platform_data *pdata;
 	struct gpio_keys_button *button;
-	struct fwnode_handle *child;
 	int nbuttons;
 
 	nbuttons = device_get_child_node_count(dev);
···
 
 	device_property_read_string(dev, "label", &pdata->name);
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		if (fwnode_property_read_u32(child, "linux,code",
 					     &button->code)) {
 			dev_err(dev, "button without keycode\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 

drivers/input/keyboard/iqs62x-keys.c

···
 static int iqs62x_keys_parse_prop(struct platform_device *pdev,
 				  struct iqs62x_keys_private *iqs62x_keys)
 {
-	struct fwnode_handle *child;
 	unsigned int val;
 	int ret, i;
 
···
 	}
 
 	for (i = 0; i < ARRAY_SIZE(iqs62x_keys->switches); i++) {
-		child = device_get_named_child_node(&pdev->dev,
+		struct fwnode_handle *child __free(fwnode_handle) =
+			device_get_named_child_node(&pdev->dev,
 						    iqs62x_switch_names[i]);
 		if (!child)
 			continue;
···
 		if (ret) {
 			dev_err(&pdev->dev, "Failed to read switch code: %d\n",
 				ret);
-			fwnode_handle_put(child);
 			return ret;
 		}
 		iqs62x_keys->switches[i].code = val;
···
 			iqs62x_keys->switches[i].flag = (i == IQS62X_SW_HALL_N ?
 							 IQS62X_EVENT_HALL_N_T :
 							 IQS62X_EVENT_HALL_S_T);
-
-		fwnode_handle_put(child);
 	}
 
 	return 0;

drivers/input/keyboard/matrix_keypad.c

···
 #include <linux/jiffies.h>
 #include <linux/module.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/input/matrix_keypad.h>
 #include <linux/slab.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/of_platform.h>
 
 struct matrix_keypad {
-	const struct matrix_keypad_platform_data *pdata;
 	struct input_dev *input_dev;
 	unsigned int row_shift;
 
+	unsigned int col_scan_delay_us;
+	/* key debounce interval in milli-second */
+	unsigned int debounce_ms;
+	bool drive_inactive_cols;
+
+	struct gpio_desc *row_gpios[MATRIX_MAX_ROWS];
+	unsigned int num_row_gpios;
+
+	struct gpio_desc *col_gpios[MATRIX_MAX_ROWS];
+	unsigned int num_col_gpios;
+
 	unsigned int row_irqs[MATRIX_MAX_ROWS];
-	unsigned int num_row_irqs;
 	DECLARE_BITMAP(wakeup_enabled_irqs, MATRIX_MAX_ROWS);
 
 	uint32_t last_key_state[MATRIX_MAX_COLS];
···
  * columns. In that case it is configured here to be input, otherwise it is
  * driven with the inactive value.
  */
-static void __activate_col(const struct matrix_keypad_platform_data *pdata,
-			   int col, bool on)
+static void __activate_col(struct matrix_keypad *keypad, int col, bool on)
 {
-	bool level_on = !pdata->active_low;
-
 	if (on) {
-		gpio_direction_output(pdata->col_gpios[col], level_on);
+		gpiod_direction_output(keypad->col_gpios[col], 1);
 	} else {
-		gpio_set_value_cansleep(pdata->col_gpios[col], !level_on);
-		if (!pdata->drive_inactive_cols)
-			gpio_direction_input(pdata->col_gpios[col]);
+		gpiod_set_value_cansleep(keypad->col_gpios[col], 0);
+		if (!keypad->drive_inactive_cols)
+			gpiod_direction_input(keypad->col_gpios[col]);
 	}
 }
 
-static void activate_col(const struct matrix_keypad_platform_data *pdata,
-			 int col, bool on)
+static void activate_col(struct matrix_keypad *keypad, int col, bool on)
 {
-	__activate_col(pdata, col, on);
+	__activate_col(keypad, col, on);
 
-	if (on && pdata->col_scan_delay_us)
-		udelay(pdata->col_scan_delay_us);
+	if (on && keypad->col_scan_delay_us)
+		udelay(keypad->col_scan_delay_us);
 }
 
-static void activate_all_cols(const struct matrix_keypad_platform_data *pdata,
-			      bool on)
+static void activate_all_cols(struct matrix_keypad *keypad, bool on)
 {
 	int col;
 
-	for (col = 0; col < pdata->num_col_gpios; col++)
-		__activate_col(pdata, col, on);
+	for (col = 0; col < keypad->num_col_gpios; col++)
+		__activate_col(keypad, col, on);
 }
 
-static bool row_asserted(const struct matrix_keypad_platform_data *pdata,
-			 int row)
+static bool row_asserted(struct matrix_keypad *keypad, int row)
 {
-	return gpio_get_value_cansleep(pdata->row_gpios[row]) ?
-			!pdata->active_low : pdata->active_low;
+	return gpiod_get_value_cansleep(keypad->row_gpios[row]);
 }
 
 static void enable_row_irqs(struct matrix_keypad *keypad)
 {
 	int i;
 
-	for (i = 0; i < keypad->num_row_irqs; i++)
+	for (i = 0; i < keypad->num_row_gpios; i++)
 		enable_irq(keypad->row_irqs[i]);
 }
 
···
 {
 	int i;
 
-	for (i = 0; i < keypad->num_row_irqs; i++)
+	for (i = 0; i < keypad->num_row_gpios; i++)
 		disable_irq_nosync(keypad->row_irqs[i]);
 }
 
···
 		container_of(work, struct matrix_keypad, work.work);
 	struct input_dev *input_dev = keypad->input_dev;
 	const unsigned short *keycodes = input_dev->keycode;
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
 	uint32_t new_state[MATRIX_MAX_COLS];
 	int row, col, code;
 
 	/* de-activate all columns for scanning */
-	activate_all_cols(pdata, false);
+	activate_all_cols(keypad, false);
 
 	memset(new_state, 0, sizeof(new_state));
 
-	for (row = 0; row < pdata->num_row_gpios; row++)
-		gpio_direction_input(pdata->row_gpios[row]);
+	for (row = 0; row < keypad->num_row_gpios; row++)
+		gpiod_direction_input(keypad->row_gpios[row]);
 
 	/* assert each column and read the row status out */
-	for (col = 0; col < pdata->num_col_gpios; col++) {
+	for (col = 0; col < keypad->num_col_gpios; col++) {
 
-		activate_col(pdata, col, true);
+		activate_col(keypad, col, true);
 
-		for (row = 0; row < pdata->num_row_gpios; row++)
+		for (row = 0; row < keypad->num_row_gpios; row++)
 			new_state[col] |=
-				row_asserted(pdata, row) ? (1 << row) : 0;
+				row_asserted(keypad, row) ? BIT(row) : 0;
 
-		activate_col(pdata, col, false);
+		activate_col(keypad, col, false);
 	}
 
-	for (col = 0; col < pdata->num_col_gpios; col++) {
+	for (col = 0; col < keypad->num_col_gpios; col++) {
 		uint32_t bits_changed;
 
 		bits_changed = keypad->last_key_state[col] ^ new_state[col];
 		if (bits_changed == 0)
 			continue;
 
-		for (row = 0; row < pdata->num_row_gpios; row++) {
-			if ((bits_changed & (1 << row)) == 0)
+		for (row = 0; row < keypad->num_row_gpios; row++) {
+			if (!(bits_changed & BIT(row)))
 				continue;
 
 			code = MATRIX_SCAN_CODE(row, col, keypad->row_shift);
···
 
 	memcpy(keypad->last_key_state, new_state, sizeof(new_state));
 
-	activate_all_cols(pdata, true);
+	activate_all_cols(keypad, true);
 
 	/* Enable IRQs again */
 	spin_lock_irq(&keypad->lock);
···
 	disable_row_irqs(keypad);
 	keypad->scan_pending = true;
 	schedule_delayed_work(&keypad->work,
-		msecs_to_jiffies(keypad->pdata->debounce_ms));
+			      msecs_to_jiffies(keypad->debounce_ms));
 
 out:
 	spin_unlock_irqrestore(&keypad->lock, flags);
···
 {
 	int i;
 
-	for_each_clear_bit(i, keypad->wakeup_enabled_irqs, keypad->num_row_irqs)
+	for_each_clear_bit(i, keypad->wakeup_enabled_irqs,
+			   keypad->num_row_gpios)
 		if (enable_irq_wake(keypad->row_irqs[i]) == 0)
 			__set_bit(i, keypad->wakeup_enabled_irqs);
 }
···
 {
 	int i;
 
-	for_each_set_bit(i, keypad->wakeup_enabled_irqs, keypad->num_row_irqs) {
+	for_each_set_bit(i, keypad->wakeup_enabled_irqs,
+			 keypad->num_row_gpios) {
 		disable_irq_wake(keypad->row_irqs[i]);
 		__clear_bit(i, keypad->wakeup_enabled_irqs);
 	}
···
 static int matrix_keypad_init_gpio(struct platform_device *pdev,
 				   struct matrix_keypad *keypad)
 {
-	const struct matrix_keypad_platform_data *pdata = keypad->pdata;
-	int i, irq, err;
+	bool active_low;
+	int nrow, ncol;
+	int err;
+	int i;
 
-	/* initialized strobe lines as outputs, activated */
-	for (i = 0; i < pdata->num_col_gpios; i++) {
-		err = devm_gpio_request(&pdev->dev,
-					pdata->col_gpios[i], "matrix_kbd_col");
+	nrow = gpiod_count(&pdev->dev, "row");
+	ncol = gpiod_count(&pdev->dev, "col");
+	if (nrow < 0 || ncol < 0) {
+		dev_err(&pdev->dev, "missing row or column GPIOs\n");
+		return -EINVAL;
+	}
+
+	keypad->num_row_gpios = nrow;
+	keypad->num_col_gpios = ncol;
+
+	active_low = device_property_read_bool(&pdev->dev, "gpio-activelow");
+
+	/* initialize strobe lines as outputs, activated */
+	for (i = 0; i < keypad->num_col_gpios; i++) {
+		keypad->col_gpios[i] = devm_gpiod_get_index(&pdev->dev, "col",
+							    i, GPIOD_ASIS);
+		err = PTR_ERR_OR_ZERO(keypad->col_gpios[i]);
 		if (err) {
 			dev_err(&pdev->dev,
-				"failed to request GPIO%d for COL%d\n",
-				pdata->col_gpios[i], i);
+				"failed to request GPIO for COL%d: %d\n",
+				i, err);
 			return err;
 		}
 
-		gpio_direction_output(pdata->col_gpios[i], !pdata->active_low);
+		gpiod_set_consumer_name(keypad->col_gpios[i], "matrix_kbd_col");
+
+		if (active_low ^ gpiod_is_active_low(keypad->col_gpios[i]))
+			gpiod_toggle_active_low(keypad->col_gpios[i]);
+
+		gpiod_direction_output(keypad->col_gpios[i], 1);
 	}
 
-	for (i = 0; i < pdata->num_row_gpios; i++) {
-		err = devm_gpio_request(&pdev->dev,
-					pdata->row_gpios[i], "matrix_kbd_row");
+	for (i = 0; i < keypad->num_row_gpios; i++) {
+		keypad->row_gpios[i] = devm_gpiod_get_index(&pdev->dev, "row",
+							    i, GPIOD_IN);
+		err = PTR_ERR_OR_ZERO(keypad->row_gpios[i]);
 		if (err) {
 			dev_err(&pdev->dev,
-				"failed to request GPIO%d for ROW%d\n",
-				pdata->row_gpios[i], i);
+				"failed to request GPIO for ROW%d: %d\n",
+				i, err);
 			return err;
 		}
 
-		gpio_direction_input(pdata->row_gpios[i]);
+		gpiod_set_consumer_name(keypad->row_gpios[i], "matrix_kbd_row");
+
+		if (active_low ^ gpiod_is_active_low(keypad->row_gpios[i]))
+			gpiod_toggle_active_low(keypad->row_gpios[i]);
 	}
 
-	if (pdata->clustered_irq > 0) {
-		err = devm_request_any_context_irq(&pdev->dev,
-				pdata->clustered_irq,
-				matrix_keypad_interrupt,
-				pdata->clustered_irq_flags,
-				"matrix-keypad", keypad);
+	return 0;
+}
+
+static int matrix_keypad_setup_interrupts(struct platform_device *pdev,
+					  struct matrix_keypad *keypad)
+{
+	int err;
+	int irq;
+	int i;
+
+	for (i = 0; i < keypad->num_row_gpios; i++) {
+		irq = gpiod_to_irq(keypad->row_gpios[i]);
+		if (irq < 0) {
+			err = irq;
+			dev_err(&pdev->dev,
+				"Unable to convert GPIO line %i to irq: %d\n",
+				i, err);
+			return err;
+		}
+
+		err = devm_request_any_context_irq(&pdev->dev, irq,
+						   matrix_keypad_interrupt,
+						   IRQF_TRIGGER_RISING |
+							IRQF_TRIGGER_FALLING,
+						   "matrix-keypad", keypad);
 		if (err < 0) {
 			dev_err(&pdev->dev,
-				"Unable to acquire clustered interrupt\n");
+				"Unable to acquire interrupt for row %i: %d\n",
+				i, err);
 			return err;
 		}
 
-		keypad->row_irqs[0] = pdata->clustered_irq;
-		keypad->num_row_irqs = 1;
-	} else {
-		for (i = 0; i < pdata->num_row_gpios; i++) {
-			irq = gpio_to_irq(pdata->row_gpios[i]);
-			if (irq < 0) {
-				err = irq;
-				dev_err(&pdev->dev,
-					"Unable to convert GPIO line %i to irq: %d\n",
-					pdata->row_gpios[i], err);
-				return err;
-			}
-
-			err = devm_request_any_context_irq(&pdev->dev,
-					irq,
-					matrix_keypad_interrupt,
-					IRQF_TRIGGER_RISING |
-						IRQF_TRIGGER_FALLING,
-					"matrix-keypad", keypad);
-			if (err < 0) {
-				dev_err(&pdev->dev,
-					"Unable to acquire interrupt for GPIO line %i\n",
-					pdata->row_gpios[i]);
-				return err;
-			}
-
-			keypad->row_irqs[i] = irq;
-		}
-
-		keypad->num_row_irqs = pdata->num_row_gpios;
+		keypad->row_irqs[i] = irq;
 	}
 
 	/* initialized as disabled - enabled by input->open */
···
 	return 0;
 }
 
-#ifdef CONFIG_OF
-static struct matrix_keypad_platform_data *
-matrix_keypad_parse_dt(struct device *dev)
-{
-	struct matrix_keypad_platform_data *pdata;
-	struct device_node *np = dev->of_node;
-	unsigned int *gpios;
-	int ret, i, nrow, ncol;
-
-	if (!np) {
-		dev_err(dev, "device lacks DT data\n");
-		return ERR_PTR(-ENODEV);
-	}
-
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata) {
-		dev_err(dev, "could not allocate memory for platform data\n");
-		return ERR_PTR(-ENOMEM);
-	}
-
-	pdata->num_row_gpios = nrow = gpiod_count(dev, "row");
-	pdata->num_col_gpios = ncol = gpiod_count(dev, "col");
-	if (nrow < 0 || ncol < 0) {
-		dev_err(dev, "number of keypad rows/columns not specified\n");
-		return ERR_PTR(-EINVAL);
-	}
-
-	pdata->no_autorepeat = of_property_read_bool(np, "linux,no-autorepeat");
-
-	pdata->wakeup = of_property_read_bool(np, "wakeup-source") ||
-			of_property_read_bool(np, "linux,wakeup"); /* legacy */
-
-	pdata->active_low = of_property_read_bool(np, "gpio-activelow");
-
-	pdata->drive_inactive_cols =
-		of_property_read_bool(np, "drive-inactive-cols");
-
-	of_property_read_u32(np, "debounce-delay-ms", &pdata->debounce_ms);
-	of_property_read_u32(np, "col-scan-delay-us",
-						&pdata->col_scan_delay_us);
-
-	gpios = devm_kcalloc(dev,
-			     pdata->num_row_gpios + pdata->num_col_gpios,
-			     sizeof(unsigned int),
-			     GFP_KERNEL);
-	if (!gpios) {
-		dev_err(dev, "could not allocate memory for gpios\n");
-		return ERR_PTR(-ENOMEM);
-	}
-
-	for (i = 0; i < nrow; i++) {
-		ret = of_get_named_gpio(np, "row-gpios", i);
-		if (ret < 0)
-			return ERR_PTR(ret);
-		gpios[i] = ret;
-	}
-
-	for (i = 0; i < ncol; i++) {
-		ret = of_get_named_gpio(np, "col-gpios", i);
-		if (ret < 0)
-			return ERR_PTR(ret);
-		gpios[nrow + i] = ret;
-	}
-
-	pdata->row_gpios = gpios;
-	pdata->col_gpios = &gpios[pdata->num_row_gpios];
-
-	return pdata;
-}
-#else
-static inline struct matrix_keypad_platform_data *
-matrix_keypad_parse_dt(struct device *dev)
-{
-	dev_err(dev, "no platform data defined\n");
-
-	return ERR_PTR(-EINVAL);
-}
-#endif
-
 static int matrix_keypad_probe(struct platform_device *pdev)
 {
-	const struct matrix_keypad_platform_data *pdata;
 	struct matrix_keypad *keypad;
 	struct input_dev *input_dev;
+	bool wakeup;
 	int err;
-
-	pdata = dev_get_platdata(&pdev->dev);
-	if (!pdata) {
-		pdata = matrix_keypad_parse_dt(&pdev->dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-	} else if (!pdata->keymap_data) {
-		dev_err(&pdev->dev, "no keymap data defined\n");
-		return -EINVAL;
-	}
 
 	keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad), GFP_KERNEL);
 	if (!keypad)
···
 		return -ENOMEM;
 
 	keypad->input_dev = input_dev;
-	keypad->pdata = pdata;
-	keypad->row_shift = get_count_order(pdata->num_col_gpios);
 	keypad->stopped = true;
 	INIT_DELAYED_WORK(&keypad->work, matrix_keypad_scan);
 	spin_lock_init(&keypad->lock);
+
+	keypad->drive_inactive_cols =
+		device_property_read_bool(&pdev->dev, "drive-inactive-cols");
+	device_property_read_u32(&pdev->dev, "debounce-delay-ms",
+				 &keypad->debounce_ms);
+	device_property_read_u32(&pdev->dev, "col-scan-delay-us",
+				 &keypad->col_scan_delay_us);
+
+	err = matrix_keypad_init_gpio(pdev, keypad);
+	if (err)
+		return err;
+
+	keypad->row_shift = get_count_order(keypad->num_col_gpios);
+
+	err = matrix_keypad_setup_interrupts(pdev, keypad);
+	if (err)
+		return err;
 
 	input_dev->name		= pdev->name;
 	input_dev->id.bustype	= BUS_HOST;
 	input_dev->open		= matrix_keypad_start;
 	input_dev->close	= matrix_keypad_stop;
 
-	err = matrix_keypad_build_keymap(pdata->keymap_data, NULL,
-					 pdata->num_row_gpios,
-					 pdata->num_col_gpios,
+	err = matrix_keypad_build_keymap(NULL, NULL,
+					 keypad->num_row_gpios,
+					 keypad->num_col_gpios,
 					 NULL, input_dev);
 	if (err) {
 		dev_err(&pdev->dev, "failed to build keymap\n");
 		return -ENOMEM;
 	}
 
-	if (!pdata->no_autorepeat)
+	if (!device_property_read_bool(&pdev->dev, "linux,no-autorepeat"))
 		__set_bit(EV_REP, input_dev->evbit);
+
 	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
 	input_set_drvdata(input_dev, keypad);
-
-	err = matrix_keypad_init_gpio(pdev, keypad);
-	if (err)
-		return err;
 
 	err = input_register_device(keypad->input_dev);
 	if (err)
 		return err;
 
-	device_init_wakeup(&pdev->dev, pdata->wakeup);
+	wakeup = device_property_read_bool(&pdev->dev, "wakeup-source") ||
+		 /* legacy */
+		 device_property_read_bool(&pdev->dev, "linux,wakeup");
+	device_init_wakeup(&pdev->dev, wakeup);
+
 	platform_set_drvdata(pdev, keypad);
 
 	return 0;

drivers/input/keyboard/mcs_touchkey.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Touchkey driver for MELFAS MCS5000/5080 controller
- *
- * Copyright (C) 2010 Samsung Electronics Co.Ltd
- * Author: HeungJun Kim <[e-mail]>
- * Author: Joonyoung Shim <[e-mail]>
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
-#include <linux/platform_data/mcs.h>
-#include <linux/pm.h>
-
-/* MCS5000 Touchkey */
-#define MCS5000_TOUCHKEY_STATUS		0x04
-#define MCS5000_TOUCHKEY_STATUS_PRESS	7
-#define MCS5000_TOUCHKEY_FW		0x0a
-#define MCS5000_TOUCHKEY_BASE_VAL	0x61
-
-/* MCS5080 Touchkey */
-#define MCS5080_TOUCHKEY_STATUS		0x00
-#define MCS5080_TOUCHKEY_STATUS_PRESS	3
-#define MCS5080_TOUCHKEY_FW		0x01
-#define MCS5080_TOUCHKEY_BASE_VAL	0x1
-
-enum mcs_touchkey_type {
-	MCS5000_TOUCHKEY,
-	MCS5080_TOUCHKEY,
-};
-
-struct mcs_touchkey_chip {
-	unsigned int status_reg;
-	unsigned int pressbit;
-	unsigned int press_invert;
-	unsigned int baseval;
-};
-
-struct mcs_touchkey_data {
-	void (*poweron)(bool);
-
-	struct i2c_client *client;
-	struct input_dev *input_dev;
-	struct mcs_touchkey_chip chip;
-	unsigned int key_code;
-	unsigned int key_val;
-	unsigned short keycodes[];
-};
-
-static irqreturn_t mcs_touchkey_interrupt(int irq, void *dev_id)
-{
-	struct mcs_touchkey_data *data = dev_id;
-	struct mcs_touchkey_chip *chip = &data->chip;
-	struct i2c_client *client = data->client;
-	struct input_dev *input = data->input_dev;
-	unsigned int key_val;
-	unsigned int pressed;
-	int val;
-
-	val = i2c_smbus_read_byte_data(client, chip->status_reg);
-	if (val < 0) {
-		dev_err(&client->dev, "i2c read error [%d]\n", val);
-		goto out;
-	}
-
-	pressed = (val & (1 << chip->pressbit)) >> chip->pressbit;
-	if (chip->press_invert)
-		pressed ^= chip->press_invert;
-
-	/* key_val is 0 when released, so we should use key_val of press. */
-	if (pressed) {
-		key_val = val & (0xff >> (8 - chip->pressbit));
-		if (!key_val)
-			goto out;
-		key_val -= chip->baseval;
-		data->key_code = data->keycodes[key_val];
-		data->key_val = key_val;
-	}
-
-	input_event(input, EV_MSC, MSC_SCAN, data->key_val);
-	input_report_key(input, data->key_code, pressed);
-	input_sync(input);
-
-	dev_dbg(&client->dev, "key %d %d %s\n", data->key_val, data->key_code,
-		pressed ? "pressed" : "released");
-
- out:
-	return IRQ_HANDLED;
-}
-
-static void mcs_touchkey_poweroff(void *data)
-{
-	struct mcs_touchkey_data *touchkey = data;
-
-	touchkey->poweron(false);
-}
-
-static int mcs_touchkey_probe(struct i2c_client *client)
-{
-	const struct i2c_device_id *id = i2c_client_get_device_id(client);
-	const struct mcs_platform_data *pdata;
-	struct mcs_touchkey_data *data;
-	struct input_dev *input_dev;
-	unsigned int fw_reg;
-	int fw_ver;
-	int error;
-	int i;
-
-	pdata = dev_get_platdata(&client->dev);
-	if (!pdata) {
-		dev_err(&client->dev, "no platform data defined\n");
-		return -EINVAL;
-	}
-
-	data = devm_kzalloc(&client->dev,
-			    struct_size(data, keycodes, pdata->key_maxval + 1),
-			    GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	input_dev = devm_input_allocate_device(&client->dev);
-	if (!input_dev) {
-		dev_err(&client->dev, "Failed to allocate input device\n");
-		return -ENOMEM;
-	}
-
-	data->client = client;
-	data->input_dev = input_dev;
-
-	if (id->driver_data == MCS5000_TOUCHKEY) {
-		data->chip.status_reg = MCS5000_TOUCHKEY_STATUS;
-		data->chip.pressbit = MCS5000_TOUCHKEY_STATUS_PRESS;
-		data->chip.baseval = MCS5000_TOUCHKEY_BASE_VAL;
-		fw_reg = MCS5000_TOUCHKEY_FW;
-	} else {
-		data->chip.status_reg = MCS5080_TOUCHKEY_STATUS;
-		data->chip.pressbit = MCS5080_TOUCHKEY_STATUS_PRESS;
-		data->chip.press_invert = 1;
-		data->chip.baseval = MCS5080_TOUCHKEY_BASE_VAL;
-		fw_reg = MCS5080_TOUCHKEY_FW;
-	}
-
-	fw_ver = i2c_smbus_read_byte_data(client, fw_reg);
-	if (fw_ver < 0) {
-		dev_err(&client->dev, "i2c read error[%d]\n", fw_ver);
-		return fw_ver;
-	}
-	dev_info(&client->dev, "Firmware version: %d\n", fw_ver);
-
-	input_dev->name = "MELFAS MCS Touchkey";
-	input_dev->id.bustype = BUS_I2C;
-	input_dev->evbit[0] = BIT_MASK(EV_KEY);
-	if (!pdata->no_autorepeat)
-		input_dev->evbit[0] |= BIT_MASK(EV_REP);
-	input_dev->keycode = data->keycodes;
-	input_dev->keycodesize = sizeof(data->keycodes[0]);
-	input_dev->keycodemax = pdata->key_maxval + 1;
-
-	for (i = 0; i < pdata->keymap_size; i++) {
-		unsigned int val = MCS_KEY_VAL(pdata->keymap[i]);
-		unsigned int code = MCS_KEY_CODE(pdata->keymap[i]);
-
-		data->keycodes[val] = code;
-		__set_bit(code, input_dev->keybit);
-	}
-
-	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
-	input_set_drvdata(input_dev, data);
-
-	if (pdata->cfg_pin)
-		pdata->cfg_pin();
-
-	if (pdata->poweron) {
-		data->poweron = pdata->poweron;
-		data->poweron(true);
-
-		error = devm_add_action_or_reset(&client->dev,
-						 mcs_touchkey_poweroff, data);
-		if (error)
-			return error;
-	}
-
-	error = devm_request_threaded_irq(&client->dev, client->irq,
-					  NULL, mcs_touchkey_interrupt,
-					  IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-					  client->dev.driver->name, data);
-	if (error) {
-		dev_err(&client->dev, "Failed to register interrupt\n");
-		return error;
-	}
-
-	error = input_register_device(input_dev);
-	if (error)
-		return error;
-
-	i2c_set_clientdata(client, data);
-	return 0;
-}
-
-static void mcs_touchkey_shutdown(struct i2c_client *client)
-{
-	struct mcs_touchkey_data *data = i2c_get_clientdata(client);
-
-	if (data->poweron)
-		data->poweron(false);
-}
-
-static int mcs_touchkey_suspend(struct device *dev)
-{
-	struct mcs_touchkey_data *data = dev_get_drvdata(dev);
-	struct i2c_client *client = data->client;
-
-	/* Disable the work */
-	disable_irq(client->irq);
-
-	/* Finally turn off the power */
-	if (data->poweron)
-		data->poweron(false);
-
-	return 0;
-}
-
-static int mcs_touchkey_resume(struct device *dev)
-{
-	struct mcs_touchkey_data *data = dev_get_drvdata(dev);
-	struct i2c_client *client = data->client;
-
-	/* Enable the device first */
-	if (data->poweron)
-		data->poweron(true);
-
-	/* Enable irq again */
-	enable_irq(client->irq);
-
-	return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(mcs_touchkey_pm_ops,
-				mcs_touchkey_suspend, mcs_touchkey_resume);
-
-static const struct i2c_device_id mcs_touchkey_id[] = {
-	{ "mcs5000_touchkey", MCS5000_TOUCHKEY },
-	{ "mcs5080_touchkey", MCS5080_TOUCHKEY },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, mcs_touchkey_id);
-
-static struct i2c_driver mcs_touchkey_driver = {
-	.driver = {
-		.name	= "mcs_touchkey",
-		.pm	= pm_sleep_ptr(&mcs_touchkey_pm_ops),
-	},
-	.probe		= mcs_touchkey_probe,
-	.shutdown       = mcs_touchkey_shutdown,
-	.id_table	= mcs_touchkey_id,
-};
-
-module_i2c_driver(mcs_touchkey_driver);
-
-/* Module information */
-MODULE_AUTHOR("Joonyoung Shim <[e-mail]>");
-MODULE_AUTHOR("HeungJun Kim <[e-mail]>");
-MODULE_DESCRIPTION("Touchkey driver for MELFAS MCS5000/5080 controller");
-MODULE_LICENSE("GPL");

drivers/input/keyboard/mt6779-keypad.c

···
 	return IRQ_HANDLED;
 }
 
-static void mt6779_keypad_clk_disable(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void mt6779_keypad_calc_row_col_single(unsigned int key,
 					      unsigned int *row,
 					      unsigned int *col)
···
 	regmap_update_bits(keypad->regmap, MTK_KPD_SEL, MTK_KPD_SEL_COL,
 			   MTK_KPD_SEL_COLMASK(keypad->n_cols));
 
-	keypad->clk = devm_clk_get(&pdev->dev, "kpd");
+	keypad->clk = devm_clk_get_enabled(&pdev->dev, "kpd");
 	if (IS_ERR(keypad->clk))
 		return PTR_ERR(keypad->clk);
-
-	error = clk_prepare_enable(keypad->clk);
-	if (error) {
-		dev_err(&pdev->dev, "cannot prepare/enable keypad clock\n");
-		return error;
-	}
-
-	error = devm_add_action_or_reset(&pdev->dev, mt6779_keypad_clk_disable,
-					 keypad->clk);
-	if (error)
-		return error;
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
···
 	{ .compatible = "mediatek,mt6873-keypad" },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, mt6779_keypad_of_match);
 
 static struct platform_driver mt6779_keypad_pdrv = {
 	.probe = mt6779_keypad_pdrv_probe,

drivers/input/keyboard/nomadik-ske-keypad.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) ST-Ericsson SA 2010
- *
- * Author: Naveen Kumar G <[e-mail]> for ST-Ericsson
- * Author: Sundar Iyer <[e-mail]> for ST-Ericsson
- *
- * Keypad controller driver for the SKE (Scroll Key Encoder) module used in
- * the Nomadik 8815 and Ux500 platforms.
- */
-
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/input.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/module.h>
-
-#include <linux/platform_data/keypad-nomadik-ske.h>
-
-/* SKE_CR bits */
-#define SKE_KPMLT	(0x1 << 6)
-#define SKE_KPCN	(0x7 << 3)
-#define SKE_KPASEN	(0x1 << 2)
-#define SKE_KPASON	(0x1 << 7)
-
-/* SKE_IMSC bits */
-#define SKE_KPIMA	(0x1 << 2)
-
-/* SKE_ICR bits */
-#define SKE_KPICS	(0x1 << 3)
-#define SKE_KPICA	(0x1 << 2)
-
-/* SKE_RIS bits */
-#define SKE_KPRISA	(0x1 << 2)
-
-#define SKE_KEYPAD_ROW_SHIFT	3
-#define SKE_KPD_NUM_ROWS	8
-#define SKE_KPD_NUM_COLS	8
-
-/* keypad auto scan registers */
-#define SKE_ASR0	0x20
-#define SKE_ASR1	0x24
-#define SKE_ASR2	0x28
-#define SKE_ASR3	0x2C
-
-#define SKE_NUM_ASRX_REGISTERS	(4)
-#define	KEY_PRESSED_DELAY	10
-
-/**
- * struct ske_keypad  - data structure used by keypad driver
- * @irq:	irq no
- * @reg_base:	ske registers base address
- * @input:	pointer to input device object
- * @board:	keypad platform device
- * @keymap:	matrix scan code table for keycodes
- * @clk:	clock structure pointer
- * @pclk:	clock structure pointer
- * @ske_keypad_lock: spinlock protecting the keypad read/writes
- */
-struct ske_keypad {
-	int irq;
-	void __iomem *reg_base;
-	struct input_dev *input;
-	const struct ske_keypad_platform_data *board;
-	unsigned short keymap[SKE_KPD_NUM_ROWS * SKE_KPD_NUM_COLS];
-	struct clk *clk;
-	struct clk *pclk;
-	spinlock_t ske_keypad_lock;
-};
-
-static void ske_keypad_set_bits(struct ske_keypad *keypad, u16 addr,
-		u8 mask, u8 data)
-{
-	u32 ret;
-
-	spin_lock(&keypad->ske_keypad_lock);
-
-	ret = readl(keypad->reg_base + addr);
-	ret &= ~mask;
-	ret |= data;
-	writel(ret, keypad->reg_base + addr);
-
-	spin_unlock(&keypad->ske_keypad_lock);
-}
-
-/*
- * ske_keypad_chip_init: init keypad controller configuration
- *
- * Enable Multi key press detection, auto scan mode
- */
-static int __init ske_keypad_chip_init(struct ske_keypad *keypad)
-{
-	u32 value;
-	int timeout = keypad->board->debounce_ms;
-
-	/* check SKE_RIS to be 0 */
-	while ((readl(keypad->reg_base + SKE_RIS) != 0x00000000) && timeout--)
-		cpu_relax();
-
-	if (timeout == -1)
-		return -EINVAL;
-
-	/*
-	 * set debounce value
-	 * keypad dbounce is configured in DBCR[15:8]
-	 * dbounce value in steps of 32/32.768 ms
-	 */
-	spin_lock(&keypad->ske_keypad_lock);
-	value = readl(keypad->reg_base + SKE_DBCR);
-	value = value & 0xff;
-	value |= ((keypad->board->debounce_ms * 32000)/32768) << 8;
-	writel(value, keypad->reg_base + SKE_DBCR);
-	spin_unlock(&keypad->ske_keypad_lock);
-
-	/* enable multi key detection */
-	ske_keypad_set_bits(keypad, SKE_CR, 0x0, SKE_KPMLT);
-
-	/*
-	 * set up the number of columns
-	 * KPCN[5:3] defines no. of keypad columns to be auto scanned
-	 */
-	value = (keypad->board->kcol - 1) << 3;
-	ske_keypad_set_bits(keypad, SKE_CR, SKE_KPCN, value);
-
-	/* clear keypad interrupt for auto(and pending SW) scans */
-	ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA | SKE_KPICS);
-
-	/* un-mask keypad interrupts */
-	ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA);
-
-	/* enable automatic scan */
-	ske_keypad_set_bits(keypad, SKE_CR, 0x0, SKE_KPASEN);
-
-	return 0;
-}
-
-static void ske_keypad_report(struct ske_keypad *keypad, u8 status, int col)
-{
-	int row = 0, code, pos;
-	struct input_dev *input = keypad->input;
-	u32 ske_ris;
-	int key_pressed;
-	int num_of_rows;
-
-	/* find out the row */
-	num_of_rows = hweight8(status);
-	do {
-		pos = __ffs(status);
-		row = pos;
-		status &= ~(1 << pos);
-
-		code = MATRIX_SCAN_CODE(row, col, SKE_KEYPAD_ROW_SHIFT);
-		ske_ris = readl(keypad->reg_base + SKE_RIS);
-		key_pressed = ske_ris & SKE_KPRISA;
-
-		input_event(input, EV_MSC, MSC_SCAN, code);
-		input_report_key(input, keypad->keymap[code], key_pressed);
-		input_sync(input);
-		num_of_rows--;
-	} while (num_of_rows);
-}
-
-static void ske_keypad_read_data(struct ske_keypad *keypad)
-{
-	u8 status;
-	int col = 0;
-	int ske_asr, i;
-
-	/*
-	 * Read the auto scan registers
-	 *
-	 * Each SKE_ASRx (x=0 to x=3) contains two row values.
-	 * lower byte contains row value for column 2*x,
-	 * upper byte contains row value for column 2*x + 1
-	 */
-	for (i = 0; i < SKE_NUM_ASRX_REGISTERS; i++) {
-		ske_asr = readl(keypad->reg_base + SKE_ASR0 + (4 * i));
-		if (!ske_asr)
-			continue;
-
-		/* now that ASRx is zero, find out the coloumn x and row y */
-		status = ske_asr & 0xff;
-		if (status) {
-			col = i * 2;
-			ske_keypad_report(keypad, status, col);
-		}
-		status = (ske_asr & 0xff00) >> 8;
-		if (status) {
-			col = (i * 2) + 1;
-			ske_keypad_report(keypad, status, col);
-		}
-	}
-}
-
-static irqreturn_t ske_keypad_irq(int irq, void *dev_id)
-{
-	struct ske_keypad *keypad = dev_id;
-	int timeout = keypad->board->debounce_ms;
-
-	/* disable auto scan interrupt; mask the interrupt generated */
-	ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0);
-	ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA);
-
-	while ((readl(keypad->reg_base + SKE_CR) & SKE_KPASON) && --timeout)
-		cpu_relax();
-
-	/* SKEx registers are stable and can be read */
-	ske_keypad_read_data(keypad);
-
-	/* wait until raw interrupt is clear */
-	while ((readl(keypad->reg_base + SKE_RIS)) && --timeout)
-		msleep(KEY_PRESSED_DELAY);
-
-	/* enable auto scan interrupts */
-	ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA);
-
-	return IRQ_HANDLED;
-}
-
-static void ske_keypad_board_exit(void *data)
-{
-	struct ske_keypad *keypad = data;
-
-	keypad->board->exit();
-}
-
-static int __init ske_keypad_probe(struct platform_device *pdev)
-{
-	const struct ske_keypad_platform_data *plat =
-			dev_get_platdata(&pdev->dev);
-	struct device *dev = &pdev->dev;
-	struct ske_keypad *keypad;
-	struct input_dev *input;
-	int irq;
-	int error;
-
-	if (!plat) {
-		dev_err(&pdev->dev, "invalid keypad platform data\n");
-		return -EINVAL;
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
-
-	keypad = devm_kzalloc(dev, sizeof(struct ske_keypad),
-			      GFP_KERNEL);
-	input = devm_input_allocate_device(dev);
-	if (!keypad || !input) {
-		dev_err(&pdev->dev, "failed to allocate keypad memory\n");
-		return -ENOMEM;
-	}
-
-	keypad->irq = irq;
-	keypad->board = plat;
-	keypad->input = input;
-	spin_lock_init(&keypad->ske_keypad_lock);
-
-	keypad->reg_base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(keypad->reg_base))
-		return PTR_ERR(keypad->reg_base);
-
-	keypad->pclk = devm_clk_get_enabled(dev, "apb_pclk");
-	if (IS_ERR(keypad->pclk)) {
-		dev_err(&pdev->dev, "failed to get pclk\n");
-		return PTR_ERR(keypad->pclk);
-	}
-
-	keypad->clk = devm_clk_get_enabled(dev, NULL);
-	if (IS_ERR(keypad->clk)) {
-		dev_err(&pdev->dev, "failed to get clk\n");
-		return PTR_ERR(keypad->clk);
-	}
-
-	input->id.bustype = BUS_HOST;
-	input->name = "ux500-ske-keypad";
-	input->dev.parent = &pdev->dev;
-
-	error = matrix_keypad_build_keymap(plat->keymap_data, NULL,
-					   SKE_KPD_NUM_ROWS, SKE_KPD_NUM_COLS,
-					   keypad->keymap, input);
-	if (error) {
-		dev_err(&pdev->dev, "Failed to build keymap\n");
-		return error;
-	}
-
-	input_set_capability(input, EV_MSC, MSC_SCAN);
-	if (!plat->no_autorepeat)
-		__set_bit(EV_REP, input->evbit);
-
-	/* go through board initialization helpers */
-	if (keypad->board->init)
-		keypad->board->init();
-
-	if (keypad->board->exit) {
-		error = devm_add_action_or_reset(dev, ske_keypad_board_exit,
-						 keypad);
-		if (error)
-			return error;
-	}
-
-	error = ske_keypad_chip_init(keypad);
-	if (error) {
-		dev_err(&pdev->dev, "unable to init keypad hardware\n");
-		return error;
-	}
-
-	error = devm_request_threaded_irq(dev, keypad->irq,
-					  NULL, ske_keypad_irq,
-					  IRQF_ONESHOT, "ske-keypad", keypad);
-	if (error) {
-		dev_err(&pdev->dev, "allocate irq %d failed\n", keypad->irq);
-		return error;
-	}
-
-	error = input_register_device(input);
-	if (error) {
-		dev_err(&pdev->dev,
-			"unable to register input device: %d\n", error);
-		return error;
-	}
-
-	if (plat->wakeup_enable)
-		device_init_wakeup(&pdev->dev, true);
-
-	platform_set_drvdata(pdev, keypad);
-
-	return 0;
-}
-
-static int ske_keypad_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct ske_keypad *keypad = platform_get_drvdata(pdev);
-	int irq = platform_get_irq(pdev, 0);
-
-	if (device_may_wakeup(dev))
-		enable_irq_wake(irq);
-	else
-		ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0);
-
-	return 0;
-}
-
-static int ske_keypad_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct ske_keypad *keypad = platform_get_drvdata(pdev);
-	int irq = platform_get_irq(pdev, 0);
-
-	if (device_may_wakeup(dev))
-		disable_irq_wake(irq);
-	else
-		ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA);
-
-	return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(ske_keypad_dev_pm_ops,
-				ske_keypad_suspend, ske_keypad_resume);
-
-static struct platform_driver ske_keypad_driver = {
-	.driver = {
-		.name = "nmk-ske-keypad",
-		.pm = pm_sleep_ptr(&ske_keypad_dev_pm_ops),
-	},
-};
-
-module_platform_driver_probe(ske_keypad_driver, ske_keypad_probe);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Naveen Kumar <[e-mail]> / Sundar Iyer <[e-mail]>");
-MODULE_DESCRIPTION("Nomadik Scroll-Key-Encoder Keypad Driver");
-MODULE_ALIAS("platform:nomadik-ske-keypad");

drivers/input/keyboard/qt1050.c

···
 static int qt1050_parse_fw(struct qt1050_priv *ts)
 {
 	struct device *dev = &ts->client->dev;
-	struct fwnode_handle *child;
 	int nbuttons;
 
 	nbuttons = device_get_child_node_count(dev);
 	if (nbuttons == 0 || nbuttons > QT1050_MAX_KEYS)
 		return -ENODEV;
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		struct qt1050_key button;
 
 		/* Required properties */
 		if (fwnode_property_read_u32(child, "linux,code",
 					     &button.keycode)) {
 			dev_err(dev, "Button without keycode\n");
-			goto err;
+			return -EINVAL;
 		}
 		if (button.keycode >= KEY_MAX) {
 			dev_err(dev, "Invalid keycode 0x%x\n",
 				button.keycode);
-			goto err;
+			return -EINVAL;
 		}
 
 		if (fwnode_property_read_u32(child, "reg",
 					     &button.num)) {
 			dev_err(dev, "Button without pad number\n");
-			goto err;
+			return -EINVAL;
 		}
 		if (button.num < 0 || button.num > QT1050_MAX_KEYS - 1)
-			goto err;
+			return -EINVAL;
 
 		ts->reg_keys |= BIT(button.num);
 
···
 	}
 
 	return 0;
-
-err:
-	fwnode_handle_put(child);
-	return -EINVAL;
 }
 
 static int qt1050_probe(struct i2c_client *client)

drivers/input/keyboard/snvs_pwrkey.c

···
 	return IRQ_HANDLED;
 }
 
-static void imx_snvs_pwrkey_disable_clk(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void imx_snvs_pwrkey_act(void *pdata)
 {
 	struct pwrkey_drv_data *pd = pdata;
···
 		dev_warn(&pdev->dev, "KEY_POWER without setting in dts\n");
 	}
 
-	clk = devm_clk_get_optional(&pdev->dev, NULL);
+	clk = devm_clk_get_optional_enabled(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
 		dev_err(&pdev->dev, "Failed to get snvs clock (%pe)\n", clk);
 		return PTR_ERR(clk);
-	}
-
-	error = clk_prepare_enable(clk);
-	if (error) {
-		dev_err(&pdev->dev, "Failed to enable snvs clock (%pe)\n",
-			ERR_PTR(error));
-		return error;
-	}
-
-	error = devm_add_action_or_reset(&pdev->dev,
-					 imx_snvs_pwrkey_disable_clk, clk);
-	if (error) {
-		dev_err(&pdev->dev,
-			"Failed to register clock cleanup handler (%pe)\n",
-			ERR_PTR(error));
-		return error;
 	}
 
 	pdata->wakeup = of_property_read_bool(np, "wakeup-source");
···
 	error = devm_request_irq(&pdev->dev, pdata->irq,
 			       imx_snvs_pwrkey_interrupt,
 			       0, pdev->name, pdev);
-
 	if (error) {
 		dev_err(&pdev->dev, "interrupt not available.\n");
 		return error;

drivers/input/keyboard/spear-keyboard.c

···
 	if (IS_ERR(kbd->io_base))
 		return PTR_ERR(kbd->io_base);
 
-	kbd->clk = devm_clk_get(&pdev->dev, NULL);
+	kbd->clk = devm_clk_get_prepared(&pdev->dev, NULL);
 	if (IS_ERR(kbd->clk))
 		return PTR_ERR(kbd->clk);
 
···
 		return error;
 	}
 
-	error = clk_prepare(kbd->clk);
-	if (error)
-		return error;
-
 	error = input_register_device(input_dev);
 	if (error) {
 		dev_err(&pdev->dev, "Unable to register keyboard device\n");
-		clk_unprepare(kbd->clk);
 		return error;
 	}
 
···
 	platform_set_drvdata(pdev, kbd);
 
 	return 0;
-}
-
-static void spear_kbd_remove(struct platform_device *pdev)
-{
-	struct spear_kbd *kbd = platform_get_drvdata(pdev);
-
-	input_unregister_device(kbd->input);
-	clk_unprepare(kbd->clk);
 }
 
 static int spear_kbd_suspend(struct device *dev)
···
 
 static struct platform_driver spear_kbd_driver = {
 	.probe		= spear_kbd_probe,
-	.remove_new	= spear_kbd_remove,
 	.driver		= {
 		.name	= "keyboard",
 		.pm	= pm_sleep_ptr(&spear_kbd_pm_ops),

drivers/input/keyboard/tc3589x-keypad.c

···
 	struct tc3589x_keypad_platform_data *plat;
 	u32 cols, rows;
 	u32 debounce_ms;
-	int proplen;
 
 	if (!np)
 		return ERR_PTR(-ENODEV);
···
 		return ERR_PTR(-EINVAL);
 	}
 
-	if (!of_get_property(np, "linux,keymap", &proplen)) {
+	if (!of_property_present(np, "linux,keymap")) {
 		dev_err(dev, "property linux,keymap not found\n");
 		return ERR_PTR(-ENOENT);
 	}

drivers/input/keyboard/tegra-kbc.c

···
 static void tegra_kbc_keypress_timer(struct timer_list *t)
 {
 	struct tegra_kbc *kbc = from_timer(kbc, t, timer);
-	unsigned long flags;
 	u32 val;
 	unsigned int i;
 
-	spin_lock_irqsave(&kbc->lock, flags);
+	guard(spinlock_irqsave)(&kbc->lock);
 
 	val = (readl(kbc->mmio + KBC_INT_0) >> 4) & 0xf;
 	if (val) {
···
 		/* All keys are released so enable the keypress interrupt */
 		tegra_kbc_set_fifo_interrupt(kbc, true);
 	}
-
-	spin_unlock_irqrestore(&kbc->lock, flags);
 }
 
 static irqreturn_t tegra_kbc_isr(int irq, void *args)
 {
 	struct tegra_kbc *kbc = args;
-	unsigned long flags;
 	u32 val;
 
-	spin_lock_irqsave(&kbc->lock, flags);
+	guard(spinlock_irqsave)(&kbc->lock);
 
 	/*
 	 * Quickly bail out & reenable interrupts if the fifo threshold
···
 		/* We can be here only through system resume path */
 		kbc->keypress_caused_wake = true;
 	}
-
-	spin_unlock_irqrestore(&kbc->lock, flags);
 
 	return IRQ_HANDLED;
 }
···
 
 static void tegra_kbc_stop(struct tegra_kbc *kbc)
 {
-	unsigned long flags;
 	u32 val;
 
-	spin_lock_irqsave(&kbc->lock, flags);
-	val = readl(kbc->mmio + KBC_CONTROL_0);
-	val &= ~1;
-	writel(val, kbc->mmio + KBC_CONTROL_0);
-	spin_unlock_irqrestore(&kbc->lock, flags);
+	scoped_guard(spinlock_irqsave, &kbc->lock) {
+		val = readl(kbc->mmio + KBC_CONTROL_0);
+		val &= ~1;
+		writel(val, kbc->mmio + KBC_CONTROL_0);
+	}
 
 	disable_irq(kbc->irq);
 	del_timer_sync(&kbc->timer);
···
 	struct device_node *np = kbc->dev->of_node;
 	u32 prop;
 	int i;
-	u32 num_rows = 0;
-	u32 num_cols = 0;
+	int num_rows;
+	int num_cols;
 	u32 cols_cfg[KBC_MAX_GPIO];
 	u32 rows_cfg[KBC_MAX_GPIO];
-	int proplen;
-	int ret;
 
 	if (!of_property_read_u32(np, "nvidia,debounce-delay-ms", &prop))
 		kbc->debounce_cnt = prop;
···
 	    of_property_read_bool(np, "nvidia,wakeup-source")) /* legacy */
 		kbc->wakeup = true;
 
-	if (!of_get_property(np, "nvidia,kbc-row-pins", &proplen)) {
-		dev_err(kbc->dev, "property nvidia,kbc-row-pins not found\n");
-		return -ENOENT;
-	}
-	num_rows = proplen / sizeof(u32);
-
-	if (!of_get_property(np, "nvidia,kbc-col-pins", &proplen)) {
-		dev_err(kbc->dev, "property nvidia,kbc-col-pins not found\n");
-		return -ENOENT;
-	}
-	num_cols = proplen / sizeof(u32);
-
-	if (num_rows > kbc->hw_support->max_rows) {
-		dev_err(kbc->dev,
-			"Number of rows is more than supported by hardware\n");
-		return -EINVAL;
-	}
-
-	if (num_cols > kbc->hw_support->max_columns) {
-		dev_err(kbc->dev,
-			"Number of cols is more than supported by hardware\n");
-		return -EINVAL;
-	}
-
-	if (!of_get_property(np, "linux,keymap", &proplen)) {
+	if (!of_property_present(np, "linux,keymap")) {
 		dev_err(kbc->dev, "property linux,keymap not found\n");
 		return -ENOENT;
-	}
-
-	if (!num_rows || !num_cols || ((num_rows + num_cols) > KBC_MAX_GPIO)) {
-		dev_err(kbc->dev,
-			"keypad rows/columns not properly specified\n");
-		return -EINVAL;
 	}
 
 	/* Set all pins as non-configured */
 	for (i = 0; i < kbc->num_rows_and_columns; i++)
 		kbc->pin_cfg[i].type = PIN_CFG_IGNORE;
 
-	ret = of_property_read_u32_array(np, "nvidia,kbc-row-pins",
-				rows_cfg, num_rows);
-	if (ret < 0) {
+	num_rows = of_property_read_variable_u32_array(np, "nvidia,kbc-row-pins",
+				rows_cfg, 1, KBC_MAX_GPIO);
+	if (num_rows < 0) {
 		dev_err(kbc->dev, "Rows configurations are not proper\n");
-		return -EINVAL;
-	}
-
-	ret = of_property_read_u32_array(np, "nvidia,kbc-col-pins",
-				cols_cfg, num_cols);
-	if (ret < 0) {
-		dev_err(kbc->dev, "Cols configurations are not proper\n");
+		return num_rows;
+	} else if (num_rows > kbc->hw_support->max_rows) {
+		dev_err(kbc->dev,
+			"Number of rows is more than supported by hardware\n");
 		return -EINVAL;
 	}
 
···
 		kbc->pin_cfg[rows_cfg[i]].num = i;
 	}
 
+	num_cols = of_property_read_variable_u32_array(np, "nvidia,kbc-col-pins",
+				cols_cfg, 1, KBC_MAX_GPIO);
+	if (num_cols < 0) {
+		dev_err(kbc->dev, "Cols configurations are not proper\n");
+		return num_cols;
+	} else if (num_cols > kbc->hw_support->max_columns) {
+		dev_err(kbc->dev,
+			"Number of cols is more than supported by hardware\n");
+		return -EINVAL;
+	}
+
 	for (i = 0; i < num_cols; i++) {
 		kbc->pin_cfg[cols_cfg[i]].type = PIN_CFG_COL;
 		kbc->pin_cfg[cols_cfg[i]].num = i;
+	}
+
+	if (!num_rows || !num_cols || ((num_rows + num_cols) > KBC_MAX_GPIO)) {
+		dev_err(kbc->dev,
+			"keypad rows/columns not properly specified\n");
+		return -EINVAL;
 	}
 
 	return 0;
···
 	struct platform_device *pdev = to_platform_device(dev);
 	struct tegra_kbc *kbc = platform_get_drvdata(pdev);
 
-	mutex_lock(&kbc->idev->mutex);
+	guard(mutex)(&kbc->idev->mutex);
+
 	if (device_may_wakeup(&pdev->dev)) {
 		disable_irq(kbc->irq);
 		del_timer_sync(&kbc->timer);
···
 		tegra_kbc_set_keypress_interrupt(kbc, true);
 		enable_irq(kbc->irq);
 		enable_irq_wake(kbc->irq);
-	} else {
-		if (input_device_enabled(kbc->idev))
-			tegra_kbc_stop(kbc);
+	} else if (input_device_enabled(kbc->idev)) {
+		tegra_kbc_stop(kbc);
 	}
-	mutex_unlock(&kbc->idev->mutex);
 
 	return 0;
 }
···
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct tegra_kbc *kbc = platform_get_drvdata(pdev);
-	int err = 0;
+	int err;
 
-	mutex_lock(&kbc->idev->mutex);
+	guard(mutex)(&kbc->idev->mutex);
+
 	if (device_may_wakeup(&pdev->dev)) {
 		disable_irq_wake(kbc->irq);
 		tegra_kbc_setup_wakekeys(kbc, false);
···
 			input_report_key(kbc->idev, kbc->wakeup_key, 0);
 			input_sync(kbc->idev);
 		}
-	} else {
-		if (input_device_enabled(kbc->idev))
-			err = tegra_kbc_start(kbc);
+	} else if (input_device_enabled(kbc->idev)) {
+		err = tegra_kbc_start(kbc);
+		if (err)
+			return err;
 	}
-	mutex_unlock(&kbc->idev->mutex);
 
-	return err;
+	return 0;
 }
 
 static DEFINE_SIMPLE_DEV_PM_OPS(tegra_kbc_pm_ops,

drivers/input/matrix-keymap.c

···
 	struct device *dev = input_dev->dev.parent;
 	unsigned int row_shift = get_count_order(cols);
 	unsigned int max_keys = rows << row_shift;
-	u32 *keys;
 	int i;
 	int size;
-	int retval;
+	int error;
 
 	if (!propname)
 		propname = "linux,keymap";
···
 		return -EINVAL;
 	}
 
-	keys = kmalloc_array(size, sizeof(u32), GFP_KERNEL);
+	u32 *keys __free(kfree) = kmalloc_array(size, sizeof(*keys), GFP_KERNEL);
 	if (!keys)
 		return -ENOMEM;
 
-	retval = device_property_read_u32_array(dev, propname, keys, size);
-	if (retval) {
+	error = device_property_read_u32_array(dev, propname, keys, size);
+	if (error) {
 		dev_err(dev, "failed to read %s property: %d\n",
-			propname, retval);
-		goto out;
+			propname, error);
+		return error;
 	}
 
 	for (i = 0; i < size; i++) {
 		if (!matrix_keypad_map_key(input_dev, rows, cols,
-					   row_shift, keys[i])) {
-			retval = -EINVAL;
-			goto out;
-		}
+					   row_shift, keys[i]))
+			return -EINVAL;
 	}
 
-	retval = 0;
-
-out:
-	kfree(keys);
-	return retval;
+	return 0;
 }
 
 /**

drivers/input/misc/ims-pcu.c

···
 	if (data_len > attr->field_length)
 		return -EINVAL;
 
-	scoped_cond_guard(mutex, return -EINTR, &pcu->cmd_mutex) {
+	scoped_cond_guard(mutex_intr, return -EINTR, &pcu->cmd_mutex) {
 		memset(field, 0, attr->field_length);
 		memcpy(field, buf, data_len);
 

drivers/input/misc/iqs269a.c

···
 {
 	struct iqs269_sys_reg *sys_reg = &iqs269->sys_reg;
 	struct i2c_client *client = iqs269->client;
-	struct fwnode_handle *ch_node;
 	u16 general, misc_a, misc_b;
 	unsigned int val;
 	int error;
···
 
 	sys_reg->event_mask = ~((u8)IQS269_EVENT_MASK_SYS);
 
-	device_for_each_child_node(&client->dev, ch_node) {
+	device_for_each_child_node_scoped(&client->dev, ch_node) {
 		error = iqs269_parse_chan(iqs269, ch_node);
-		if (error) {
-			fwnode_handle_put(ch_node);
+		if (error)
 			return error;
-		}
 	}
 
 	/*

drivers/input/misc/nxp-bbnsm-pwrkey.c

···
 	int irq;
 	int keycode;
 	int keystate;  /* 1:pressed */
+	bool suspended;
 	struct timer_list check_timer;
 	struct input_dev *input;
 };
···
 {
 	struct platform_device *pdev = dev_id;
 	struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
+	struct input_dev *input = bbnsm->input;
 	u32 event;
 
 	regmap_read(bbnsm->regmap, BBNSM_EVENTS, &event);
···
 		return IRQ_NONE;
 
 	pm_wakeup_event(bbnsm->input->dev.parent, 0);
+
+	/*
+	 * Directly report key event after resume to make sure key press
+	 * event is never missed.
+	 */
+	if (bbnsm->suspended) {
+		bbnsm->keystate = 1;
+		input_event(input, EV_KEY, bbnsm->keycode, 1);
+		input_sync(input);
+		/* Fire at most once per suspend/resume cycle */
+		bbnsm->suspended = false;
+	}
 
 	mod_timer(&bbnsm->check_timer,
 		   jiffies + msecs_to_jiffies(DEBOUNCE_TIME));
···
 	return 0;
 }
 
+static int __maybe_unused bbnsm_pwrkey_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
+
+	bbnsm->suspended = true;
+
+	return 0;
+}
+
+static int __maybe_unused bbnsm_pwrkey_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct bbnsm_pwrkey *bbnsm = platform_get_drvdata(pdev);
+
+	bbnsm->suspended = false;
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(bbnsm_pwrkey_pm_ops, bbnsm_pwrkey_suspend,
+		bbnsm_pwrkey_resume);
+
 static const struct of_device_id bbnsm_pwrkey_ids[] = {
 	{ .compatible = "nxp,imx93-bbnsm-pwrkey" },
 	{ /* sentinel */ }
···
 static struct platform_driver bbnsm_pwrkey_driver = {
 	.driver = {
 		.name = "bbnsm_pwrkey",
+		.pm = &bbnsm_pwrkey_pm_ops,
 		.of_match_table = bbnsm_pwrkey_ids,
 	},
 	.probe = bbnsm_pwrkey_probe,

drivers/input/misc/wistron_btns.c

···
 	for (key = keymap; key->type != KE_END; key++)
 		length++;
 
-	new_keymap = kmemdup(keymap, length * sizeof(struct key_entry),
-			     GFP_KERNEL);
+	new_keymap = kmemdup_array(keymap, length, sizeof(struct key_entry),
+				   GFP_KERNEL);
 	if (!new_keymap)
 		return -ENOMEM;
 

drivers/input/mouse/Kconfig

···
 
 	  If unsure, say Y.
 
+config MOUSE_PS2_PIXART
+	bool "PixArt PS/2 touchpad protocol extension" if EXPERT
+	default y
+	depends on MOUSE_PS2
+	help
+	  This driver supports the PixArt PS/2 touchpad found in some
+	  laptops.
+	  Say Y here if you have a PixArt PS/2 TouchPad connected to
+	  your system.
+
+	  If unsure, say Y.
+
 config MOUSE_PS2_SYNAPTICS
 	bool "Synaptics PS/2 mouse protocol extension" if EXPERT
 	default y

drivers/input/mouse/Makefile

···
 psmouse-$(CONFIG_MOUSE_PS2_OLPC)	+= hgpk.o
 psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP)	+= logips2pp.o
 psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK)	+= lifebook.o
+psmouse-$(CONFIG_MOUSE_PS2_PIXART)	+= pixart_ps2.o
 psmouse-$(CONFIG_MOUSE_PS2_SENTELIC)	+= sentelic.o
 psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT)	+= trackpoint.o
 psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT)	+= touchkit_ps2.o

drivers/input/mouse/alps.c

···
 
 static DEFINE_MUTEX(alps_mutex);
 
-static void alps_register_bare_ps2_mouse(struct work_struct *work)
+static int alps_do_register_bare_ps2_mouse(struct alps_data *priv)
 {
-	struct alps_data *priv =
-		container_of(work, struct alps_data, dev3_register_work.work);
 	struct psmouse *psmouse = priv->psmouse;
 	struct input_dev *dev3;
-	int error = 0;
-
-	mutex_lock(&alps_mutex);
-
-	if (priv->dev3)
-		goto out;
+	int error;
 
 	dev3 = input_allocate_device();
 	if (!dev3) {
 		psmouse_err(psmouse, "failed to allocate secondary device\n");
-		error = -ENOMEM;
-		goto out;
+		return -ENOMEM;
 	}
 
 	snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
···
 		psmouse_err(psmouse,
 			    "failed to register secondary device: %d\n",
 			    error);
-		input_free_device(dev3);
-		goto out;
+		goto err_free_input;
 	}
 
 	priv->dev3 = dev3;
+	return 0;
 
-out:
-	/*
-	 * Save the error code so that we can detect that we
-	 * already tried to create the device.
-	 */
-	if (error)
-		priv->dev3 = ERR_PTR(error);
+err_free_input:
+	input_free_device(dev3);
+	return error;
+}
 
-	mutex_unlock(&alps_mutex);
+static void alps_register_bare_ps2_mouse(struct work_struct *work)
+{
+	struct alps_data *priv = container_of(work, struct alps_data,
+					      dev3_register_work.work);
+	int error;
+
+	guard(mutex)(&alps_mutex);
+
+	if (!priv->dev3) {
+		error = alps_do_register_bare_ps2_mouse(priv);
+		if (error) {
+			/*
+			 * Save the error code so that we can detect that we
+			 * already tried to create the device.
+			 */
+			priv->dev3 = ERR_PTR(error);
+		}
+	}
 }
 
 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,

drivers/input/mouse/bcm5974.c

···
 	if (error)
 		return error;
 
-	mutex_lock(&dev->pm_mutex);
-
-	error = bcm5974_start_traffic(dev);
-	if (!error)
-		dev->opened = 1;
-
-	mutex_unlock(&dev->pm_mutex);
+	scoped_guard(mutex, &dev->pm_mutex) {
+		error = bcm5974_start_traffic(dev);
+		if (!error)
+			dev->opened = 1;
+	}
 
 	if (error)
 		usb_autopm_put_interface(dev->intf);
···
 {
 	struct bcm5974 *dev = input_get_drvdata(input);
 
-	mutex_lock(&dev->pm_mutex);
-
-	bcm5974_pause_traffic(dev);
-	dev->opened = 0;
-
-	mutex_unlock(&dev->pm_mutex);
+	scoped_guard(mutex, &dev->pm_mutex) {
+		bcm5974_pause_traffic(dev);
+		dev->opened = 0;
+	}
 
 	usb_autopm_put_interface(dev->intf);
 }
···
 {
 	struct bcm5974 *dev = usb_get_intfdata(iface);
 
-	mutex_lock(&dev->pm_mutex);
+	guard(mutex)(&dev->pm_mutex);
 
 	if (dev->opened)
 		bcm5974_pause_traffic(dev);
-
-	mutex_unlock(&dev->pm_mutex);
 
 	return 0;
 }
···
 static int bcm5974_resume(struct usb_interface *iface)
 {
 	struct bcm5974 *dev = usb_get_intfdata(iface);
-	int error = 0;
 
-	mutex_lock(&dev->pm_mutex);
+	guard(mutex)(&dev->pm_mutex);
 
 	if (dev->opened)
-		error = bcm5974_start_traffic(dev);
+		return bcm5974_start_traffic(dev);
 
-	mutex_unlock(&dev->pm_mutex);
-
-	return error;
+	return 0;
 }
 
 static int bcm5974_probe(struct usb_interface *iface,

drivers/input/mouse/pixart_ps2.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Pixart Touchpad Controller 1336U PS2 driver
+ *
+ * Author: Jon Xie <[e-mail]>
+ *         Jay Lee <[e-mail]>
+ * Further cleanup and restructuring by:
+ *         Binbin Zhou <[e-mail]>
+ *
+ * Copyright (C) 2021-2024 Pixart Imaging.
+ * Copyright (C) 2024 Loongson Technology Corporation Limited.
+ *
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/libps2.h>
+#include <linux/serio.h>
+#include <linux/slab.h>
+
+#include "pixart_ps2.h"
+
+static int pixart_read_tp_mode(struct ps2dev *ps2dev, u8 *mode)
+{
+	int error;
+	u8 param[1] = { 0 };
+
+	error = ps2_command(ps2dev, param, PIXART_CMD_REPORT_FORMAT);
+	if (error)
+		return error;
+
+	*mode = param[0] == 1 ? PIXART_MODE_ABS : PIXART_MODE_REL;
+
+	return 0;
+}
+
+static int pixart_read_tp_type(struct ps2dev *ps2dev, u8 *type)
+{
+	int error;
+	u8 param[3] = { 0 };
+
+	param[0] = 0x0a;
+	error = ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
+	if (error)
+		return error;
+
+	param[0] = 0x0;
+	error = ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+	if (error)
+		return error;
+
+	error = ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+	if (error)
+		return error;
+
+	error = ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+	if (error)
+		return error;
+
+	param[0] = 0x03;
+	error = ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+	if (error)
+		return error;
+
+	error = ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
+	if (error)
+		return error;
+
+	*type = param[0] == 0x0e ? PIXART_TYPE_TOUCHPAD : PIXART_TYPE_CLICKPAD;
+
+	return 0;
+}
+
+static void pixart_reset(struct psmouse *psmouse)
+{
+	ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
+
+	/* according to PixArt, 100ms is required for the upcoming reset */
+	msleep(100);
+	psmouse_reset(psmouse);
+}
+
+static void pixart_process_packet(struct psmouse *psmouse)
+{
+	struct pixart_data *priv = psmouse->private;
+	struct input_dev *dev = psmouse->dev;
+	const u8 *pkt = psmouse->packet;
+	unsigned int contact_cnt = FIELD_GET(CONTACT_CNT_MASK, pkt[0]);
+	unsigned int i, id, abs_x, abs_y;
+	bool tip;
+
+	for (i = 0; i < contact_cnt; i++) {
+		const u8 *p = &pkt[i * 3];
+
+		id = FIELD_GET(SLOT_ID_MASK, p[3]);
+		abs_y = FIELD_GET(ABS_Y_MASK, p[3]) << 8 | p[1];
+		abs_x = FIELD_GET(ABS_X_MASK, p[3]) << 8 | p[2];
+
+		if (i == PIXART_MAX_FINGERS - 1)
+			tip = pkt[14] & BIT(1);
+		else
+			tip = pkt[3 * contact_cnt + 1] & BIT(2 * i + 1);
+
+		input_mt_slot(dev, id);
+		if (input_mt_report_slot_state(dev, MT_TOOL_FINGER, tip)) {
+			input_report_abs(dev, ABS_MT_POSITION_Y, abs_y);
+			input_report_abs(dev, ABS_MT_POSITION_X, abs_x);
+		}
+	}
+
+	input_mt_sync_frame(dev);
+
+	if (priv->type == PIXART_TYPE_CLICKPAD) {
+		input_report_key(dev, BTN_LEFT, pkt[0] & 0x03);
+	} else {
+		input_report_key(dev, BTN_LEFT, pkt[0] & BIT(0));
+		input_report_key(dev, BTN_RIGHT, pkt[0] & BIT(1));
+	}
+
+	input_sync(dev);
+}
+
+static psmouse_ret_t pixart_protocol_handler(struct psmouse *psmouse)
+{
+	u8 *pkt = psmouse->packet;
+	u8 contact_cnt;
+
+	if ((pkt[0] & 0x8c) != 0x80)
+		return PSMOUSE_BAD_DATA;
+
+	contact_cnt = FIELD_GET(CONTACT_CNT_MASK, pkt[0]);
+	if (contact_cnt > PIXART_MAX_FINGERS)
+		return PSMOUSE_BAD_DATA;
+
+	if (contact_cnt == PIXART_MAX_FINGERS &&
+	    psmouse->pktcnt < psmouse->pktsize) {
+		return PSMOUSE_GOOD_DATA;
+	}
+
+	if (contact_cnt == 0 && psmouse->pktcnt < 5)
+		return PSMOUSE_GOOD_DATA;
+
+	if (psmouse->pktcnt < 3 * contact_cnt + 2)
+		return PSMOUSE_GOOD_DATA;
+
+	pixart_process_packet(psmouse);
+
+	return PSMOUSE_FULL_PACKET;
+}
+
+static void pixart_disconnect(struct psmouse *psmouse)
+{
+	pixart_reset(psmouse);
+	kfree(psmouse->private);
+	psmouse->private = NULL;
+}
+
+static int pixart_reconnect(struct psmouse *psmouse)
+{
+	struct ps2dev *ps2dev = &psmouse->ps2dev;
+	u8 mode;
+	int error;
+
+	pixart_reset(psmouse);
+
+	error = pixart_read_tp_mode(ps2dev, &mode);
+	if (error)
+		return error;
+
+	if (mode != PIXART_MODE_ABS)
+		return -EIO;
+
+	error = ps2_command(ps2dev, NULL, PIXART_CMD_SWITCH_PROTO);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+static int pixart_set_input_params(struct input_dev *dev,
+				   struct pixart_data *priv)
+{
+	/* No relative support */
+	__clear_bit(EV_REL, dev->evbit);
+	__clear_bit(REL_X, dev->relbit);
+	__clear_bit(REL_Y, dev->relbit);
+	__clear_bit(BTN_MIDDLE, dev->keybit);
+
+	/* Buttons */
+	__set_bit(EV_KEY, dev->evbit);
+	__set_bit(BTN_LEFT, dev->keybit);
+	if (priv->type == PIXART_TYPE_CLICKPAD)
+		__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
+	else
+		__set_bit(BTN_RIGHT, dev->keybit);
+
+	/* Absolute position */
+	input_set_abs_params(dev, ABS_X, 0, PIXART_PAD_WIDTH, 0, 0);
+	input_set_abs_params(dev, ABS_Y, 0, PIXART_PAD_HEIGHT, 0, 0);
+
+	input_set_abs_params(dev, ABS_MT_POSITION_X,
+			     0, PIXART_PAD_WIDTH, 0, 0);
+	input_set_abs_params(dev, ABS_MT_POSITION_Y,
+			     0, PIXART_PAD_HEIGHT, 0, 0);
+
+	return input_mt_init_slots(dev, PIXART_MAX_FINGERS, INPUT_MT_POINTER);
+}
+
+static int pixart_query_hardware(struct ps2dev *ps2dev, u8 *mode, u8 *type)
+{
+	int error;
+
+	error = pixart_read_tp_type(ps2dev, type);
+	if (error)
+		return error;
+
+	error = pixart_read_tp_mode(ps2dev, mode);
+	if (error)
+		return error;
+
+	return 0;
+}
+
+int pixart_detect(struct psmouse *psmouse, bool set_properties)
+{
+	u8 type;
+	int error;
+
+	pixart_reset(psmouse);
+
+	error = pixart_read_tp_type(&psmouse->ps2dev, &type);
+	if (error)
+		return error;
+
+	if (set_properties) {
+		psmouse->vendor = "PixArt";
+		psmouse->name = (type == PIXART_TYPE_TOUCHPAD) ?
+				"touchpad" : "clickpad";
+	}
+
+	return 0;
+}
+
+int pixart_init(struct psmouse *psmouse)
+{
+	int error;
+	struct pixart_data *priv;
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	psmouse->private = priv;
+	pixart_reset(psmouse);
+
+	error = pixart_query_hardware(&psmouse->ps2dev,
+				      &priv->mode, &priv->type);
+	if (error) {
+		psmouse_err(psmouse, "init: Unable to query PixArt touchpad hardware.\n");
+		goto err_exit;
+	}
+
+	/* Relative mode follows standard PS/2 mouse protocol */
+	if (priv->mode != PIXART_MODE_ABS) {
+		error = -EIO;
+		goto err_exit;
+	}
+
+	/* Set absolute mode */
+	error = ps2_command(&psmouse->ps2dev, NULL, PIXART_CMD_SWITCH_PROTO);
+	if (error) {
+		psmouse_err(psmouse, "init: Unable to initialize PixArt absolute mode.\n");
+		goto err_exit;
+	}
+
+	error = pixart_set_input_params(psmouse->dev, priv);
+	if (error) {
+		psmouse_err(psmouse, "init: Unable to set input params.\n");
+		goto err_exit;
+	}
+
+	psmouse->pktsize = 15;
+	psmouse->protocol_handler = pixart_protocol_handler;
+	psmouse->disconnect = pixart_disconnect;
+	psmouse->reconnect = pixart_reconnect;
+	psmouse->cleanup = pixart_reset;
+	/* resync is not supported yet */
+	psmouse->resync_time = 0;
+
+	return 0;
+
+err_exit:
+	pixart_reset(psmouse);
+	kfree(priv);
+	psmouse->private = NULL;
+	return error;
+}

drivers/input/mouse/pixart_ps2.h

···
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _PIXART_PS2_H
+#define _PIXART_PS2_H
+
+#include "psmouse.h"
+
+#define PIXART_PAD_WIDTH		1023
+#define PIXART_PAD_HEIGHT		579
+#define PIXART_MAX_FINGERS		4
+
+#define PIXART_CMD_REPORT_FORMAT	0x01d8
+#define PIXART_CMD_SWITCH_PROTO		0x00de
+
+#define PIXART_MODE_REL			0
+#define PIXART_MODE_ABS			1
+
+#define PIXART_TYPE_CLICKPAD		0
+#define PIXART_TYPE_TOUCHPAD		1
+
+#define CONTACT_CNT_MASK		GENMASK(6, 4)
+
+#define SLOT_ID_MASK			GENMASK(2, 0)
+#define ABS_Y_MASK			GENMASK(5, 4)
+#define ABS_X_MASK			GENMASK(7, 6)
+
+struct pixart_data {
+	u8 mode;
+	u8 type;
+	int x_max;
+	int y_max;
+};
+
+int pixart_detect(struct psmouse *psmouse, bool set_properties);
+int pixart_init(struct psmouse *psmouse);
+
+#endif  /* _PIXART_PS2_H */

drivers/input/mouse/psmouse-base.c

···
 #include "focaltech.h"
 #include "vmmouse.h"
 #include "byd.h"
+#include "pixart_ps2.h"
 
 #define DRIVER_DESC	"PS/2 mouse driver"
 
···
 		.init		= byd_init,
 	},
 #endif
+#ifdef CONFIG_MOUSE_PS2_PIXART
+	{
+		.type		= PSMOUSE_PIXART,
+		.name		= "PixArtPS/2",
+		.alias		= "pixart",
+		.detect		= pixart_detect,
+		.init		= pixart_init,
+	},
+#endif
 	{
 		.type		= PSMOUSE_AUTO,
 		.name		= "auto",
···
 		ret = elantech_init(psmouse);
 		if (ret >= 0)
 			return ret;
+	}
+
+	/* Try PixArt touchpad */
+	if (max_proto > PSMOUSE_IMEX &&
+	    psmouse_try_protocol(psmouse, PSMOUSE_PIXART, &max_proto,
+				 set_properties, true)) {
+		return PSMOUSE_PIXART;
 	}
 
 	if (max_proto > PSMOUSE_IMEX) {

drivers/input/mouse/psmouse.h

···
 	PSMOUSE_BYD,
 	PSMOUSE_SYNAPTICS_SMBUS,
 	PSMOUSE_ELANTECH_SMBUS,
+	PSMOUSE_PIXART,
 	PSMOUSE_AUTO		/* This one should always be last */
 };
 
···
 	const char *vendor;
 	const char *name;
 	const struct psmouse_protocol *protocol;
-	unsigned char packet[8];
+	unsigned char packet[16];
 	unsigned char badbyte;
 	unsigned char pktcnt;
 	unsigned char pktsize;

drivers/input/rmi4/rmi_f12.c

···
 };
 
 #define F12_DATA1_BYTES_PER_OBJ			8
+#define RMI_F12_QUERY_RESOLUTION		29
 
 struct f12_data {
 	struct rmi_2d_sensor sensor;
···
 	int pitch_y = 0;
 	int rx_receivers = 0;
 	int tx_receivers = 0;
+	u16 query_dpm_addr = 0;
+	int dpm_resolution = 0;
 
 	item = rmi_get_register_desc_item(&f12->control_reg_desc, 8);
 	if (!item) {
···
 		offset += 4;
 	}
 
-	if (rmi_register_desc_has_subpacket(item, 3)) {
-		rx_receivers = buf[offset];
-		tx_receivers = buf[offset + 1];
-		offset += 2;
+	/*
+	 * Use the Query DPM feature when the resolution query register
+	 * exists.
+	 */
+	if (rmi_get_register_desc_item(&f12->query_reg_desc,
+				       RMI_F12_QUERY_RESOLUTION)) {
+		offset = rmi_register_desc_calc_reg_offset(&f12->query_reg_desc,
+						RMI_F12_QUERY_RESOLUTION);
+		query_dpm_addr = fn->fd.query_base_addr	+ offset;
+		ret = rmi_read(fn->rmi_dev, query_dpm_addr, buf);
+		if (ret < 0) {
+			dev_err(&fn->dev, "Failed to read DPM value: %d\n", ret);
+			return -ENODEV;
+		}
+		dpm_resolution = buf[0];
+
+		sensor->x_mm = sensor->max_x / dpm_resolution;
+		sensor->y_mm = sensor->max_y / dpm_resolution;
+	} else {
+		if (rmi_register_desc_has_subpacket(item, 3)) {
+			rx_receivers = buf[offset];
+			tx_receivers = buf[offset + 1];
+			offset += 2;
+		}
+
+		/* Skip over sensor flags */
+		if (rmi_register_desc_has_subpacket(item, 4))
+			offset += 1;
+
+		sensor->x_mm = (pitch_x * rx_receivers) >> 12;
+		sensor->y_mm = (pitch_y * tx_receivers) >> 12;
 	}
-
-	/* Skip over sensor flags */
-	if (rmi_register_desc_has_subpacket(item, 4))
-		offset += 1;
-
-	sensor->x_mm = (pitch_x * rx_receivers) >> 12;
-	sensor->y_mm = (pitch_y * tx_receivers) >> 12;
 
 	rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: x_mm: %d y_mm: %d\n", __func__,
 		sensor->x_mm, sensor->y_mm);

drivers/input/serio/i8042-acpipnpio.h

···
 		.driver_data = (void *)(SERIO_QUIRK_NOLOOP)
 	},
 	/*
+	 * Some TongFang barebones have touchpad and/or keyboard issues after
+	 * suspend fixable with nomux + reset + noloop + nopnp. Luckily, none of
+	 * them have an external PS/2 port so this can safely be set for all of
+	 * them.
+	 * TongFang barebones come with board_vendor and/or system_vendor set to
+	 * a different value for each individual reseller. The only somewhat
+	 * universal way to identify them is by board_name.
+	 */
+	{
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "GM6XGxX"),
+		},
+		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
+					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
+	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "GMxXGxx"),
+		},
+		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
+					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
+	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "GMxXGxX"),
+		},
+		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
+					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
+	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "GMxHGxx"),
+		},
+		.driver_data = (void *)(SERIO_QUIRK_NOMUX | SERIO_QUIRK_RESET_ALWAYS |
+					SERIO_QUIRK_NOLOOP | SERIO_QUIRK_NOPNP)
+	},
+	/*
 	 * A lot of modern Clevo barebones have touchpad and/or keyboard issues
 	 * after suspend fixable with nomux + reset + noloop + nopnp. Luckily,
 	 * none of them have an external PS/2 port so this can safely be set for

drivers/input/serio/ps2-gpio.c

···
 	}
 
 	error = devm_request_irq(dev, drvdata->irq, ps2_gpio_irq,
-				 IRQF_NO_THREAD, DRIVER_NAME, drvdata);
+				 IRQF_NO_THREAD | IRQF_NO_AUTOEN, DRIVER_NAME,
+				 drvdata);
 	if (error) {
 		dev_err(dev, "failed to request irq %d: %d\n",
 			drvdata->irq, error);
 		goto err_free_serio;
 	}
-
-	/* Keep irq disabled until serio->open is called. */
-	disable_irq(drvdata->irq);
 
 	serio->id.type = SERIO_8042;
 	serio->open = ps2_gpio_open;

drivers/input/touchscreen/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called cyttsp_spi.
 
-config TOUCHSCREEN_CYTTSP4_CORE
-	tristate "Cypress TrueTouch Gen4 Touchscreen Driver"
-	help
-	  Core driver for Cypress TrueTouch(tm) Standard Product
-	  Generation4 touchscreen controllers.
-
-	  Say Y here if you have a Cypress Gen4 touchscreen.
-
-	  If unsure, say N.
-
-	  To compile this driver as a module, choose M here.
-
-config TOUCHSCREEN_CYTTSP4_I2C
-	tristate "support I2C bus connection"
-	depends on TOUCHSCREEN_CYTTSP4_CORE && I2C
-	help
-	  Say Y here if the touchscreen is connected via I2C bus.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called cyttsp4_i2c.
-
-config TOUCHSCREEN_CYTTSP4_SPI
-	tristate "support SPI bus connection"
-	depends on TOUCHSCREEN_CYTTSP4_CORE && SPI_MASTER
-	help
-	  Say Y here if the touchscreen is connected via SPI bus.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called cyttsp4_spi.
-
 config TOUCHSCREEN_CYTTSP5
 	tristate "Cypress TrueTouch Gen5 Touchscreen Driver"
 	depends on I2C
···
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called max11801_ts.
-
-config TOUCHSCREEN_MCS5000
-	tristate "MELFAS MCS-5000 touchscreen"
-	depends on I2C
-	help
-	  Say Y here if you have the MELFAS MCS-5000 touchscreen controller
-	  chip in your system.
-
-	  If unsure, say N.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called mcs5000_ts.
 
 config TOUCHSCREEN_MMS114
 	tristate "MELFAS MMS114 touchscreen"

drivers/input/touchscreen/Makefile

···
 obj-$(CONFIG_TOUCHSCREEN_CY8CTMA140)	+= cy8ctma140.o
 obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110)	+= cy8ctmg110_ts.o
 obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE)	+= cyttsp_core.o
-obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C)	+= cyttsp_i2c.o cyttsp_i2c_common.o
+obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C)	+= cyttsp_i2c.o
 obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI)	+= cyttsp_spi.o
-obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_CORE)	+= cyttsp4_core.o
-obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_I2C)	+= cyttsp4_i2c.o cyttsp_i2c_common.o
-obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_SPI)	+= cyttsp4_spi.o
 obj-$(CONFIG_TOUCHSCREEN_CYTTSP5)	+= cyttsp5.o
 obj-$(CONFIG_TOUCHSCREEN_DA9034)	+= da9034-ts.o
 obj-$(CONFIG_TOUCHSCREEN_DA9052)	+= da9052_tsi.o
···
 obj-$(CONFIG_TOUCHSCREEN_MXS_LRADC)     += mxs-lradc-ts.o
 obj-$(CONFIG_TOUCHSCREEN_MX25)		+= fsl-imx25-tcq.o
 obj-$(CONFIG_TOUCHSCREEN_MC13783)	+= mc13783_ts.o
-obj-$(CONFIG_TOUCHSCREEN_MCS5000)	+= mcs5000_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MELFAS_MIP4)	+= melfas_mip4.o
 obj-$(CONFIG_TOUCHSCREEN_MIGOR)		+= migor_ts.o
 obj-$(CONFIG_TOUCHSCREEN_MMS114)	+= mms114.o

drivers/input/touchscreen/colibri-vf50-ts.c

···
 static int vf50_ts_get_gpiod(struct device *dev, struct gpio_desc **gpio_d,
 			     const char *con_id, enum gpiod_flags flags)
 {
-	int error;
-
 	*gpio_d = devm_gpiod_get(dev, con_id, flags);
-	if (IS_ERR(*gpio_d)) {
-		error = PTR_ERR(*gpio_d);
-		dev_err(dev, "Could not get gpio_%s %d\n", con_id, error);
-		return error;
-	}
+	if (IS_ERR(*gpio_d))
+		return dev_err_probe(dev, PTR_ERR(*gpio_d),
+				     "Could not get gpio_%s\n", con_id);
 
 	return 0;
 }

drivers/input/touchscreen/cyttsp4_core.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * cyttsp4_core.c
- * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
- * For use with Cypress Txx4xx parts.
- * Supported parts include:
- * TMA4XX
- * TMA1036
- *
- * Copyright (C) 2012 Cypress Semiconductor
- *
- * Contact Cypress Semiconductor at www.cypress.com <[e-mail]>
- */
-
-#include "cyttsp4_core.h"
-#include <linux/delay.h>
-#include <linux/gpio.h>
-#include <linux/input/mt.h>
-#include <linux/interrupt.h>
-#include <linux/pm_runtime.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-
-/* Timeout in ms. */
-#define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT	500
-#define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT	5000
-#define CY_CORE_MODE_CHANGE_TIMEOUT		1000
-#define CY_CORE_RESET_AND_WAIT_TIMEOUT		500
-#define CY_CORE_WAKEUP_TIMEOUT			500
-
-#define CY_CORE_STARTUP_RETRY_COUNT		3
-
-static const char * const cyttsp4_tch_abs_string[] = {
-	[CY_TCH_X]	= "X",
-	[CY_TCH_Y]	= "Y",
-	[CY_TCH_P]	= "P",
-	[CY_TCH_T]	= "T",
-	[CY_TCH_E]	= "E",
-	[CY_TCH_O]	= "O",
-	[CY_TCH_W]	= "W",
-	[CY_TCH_MAJ]	= "MAJ",
-	[CY_TCH_MIN]	= "MIN",
-	[CY_TCH_OR]	= "OR",
-	[CY_TCH_NUM_ABS] = "INVALID"
-};
-
-static const u8 ldr_exit[] = {
-	0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
-};
-
-static const u8 ldr_err_app[] = {
-	0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17
-};
-
-static inline size_t merge_bytes(u8 high, u8 low)
-{
-	return (high << 8) + low;
-}
-
-#ifdef VERBOSE_DEBUG
-static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size,
-		const char *data_name)
-{
-	int i, k;
-	const char fmt[] = "%02X ";
-	int max;
-
-	if (!size)
-		return;
-
-	max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED);
-
-	pr_buf[0] = 0;
-	for (i = k = 0; i < size && k < max; i++, k += 3)
-		scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]);
-
-	dev_vdbg(dev, "%s:  %s[0..%d]=%s%s\n", __func__, data_name, size - 1,
-			pr_buf, size <= max ? "" : CY_PR_TRUNCATED);
-}
-#else
-#define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0)
-#endif
-
-static int cyttsp4_load_status_regs(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	struct device *dev = cd->dev;
-	int rc;
-
-	rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size,
-			si->xy_mode);
-	if (rc < 0)
-		dev_err(dev, "%s: fail read mode regs r=%d\n",
-			__func__, rc);
-	else
-		cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode,
-			si->si_ofs.mode_size, "xy_mode");
-
-	return rc;
-}
-
-static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode)
-{
-	u8 cmd = mode ^ CY_HST_TOGGLE;
-	int rc;
-
-	/*
-	 * Mode change issued, handshaking now will cause endless mode change
-	 * requests, for sync mode modechange will do same with handshake
-	 * */
-	if (mode & CY_HST_MODE_CHANGE)
-		return 0;
-
-	rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
-	if (rc < 0)
-		dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n",
-				__func__, rc);
-
-	return rc;
-}
-
-static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd)
-{
-	u8 cmd = CY_HST_RESET;
-	int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n",
-				__func__);
-		return rc;
-	}
-	return 0;
-}
-
-static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd)
-{
-	if (cd->cpdata->xres) {
-		cd->cpdata->xres(cd->cpdata, cd->dev);
-		dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__);
-		return 0;
-	}
-	dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__);
-	return -ENOSYS;
-}
-
-static int cyttsp4_hw_reset(struct cyttsp4 *cd)
-{
-	int rc = cyttsp4_hw_hard_reset(cd);
-	if (rc == -ENOSYS)
-		rc = cyttsp4_hw_soft_reset(cd);
-	return rc;
-}
-
-/*
- * Gets number of bits for a touch filed as parameter,
- * sets maximum value for field which is used as bit mask
- * and returns number of bytes required for that field
- */
-static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max)
-{
-	*max = 1UL << nbits;
-	return (nbits + 7) / 8;
-}
-
-static int cyttsp4_si_data_offsets(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data),
-			&si->si_data);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-
-	/* Print sysinfo data offsets */
-	cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data,
-		       sizeof(si->si_data), "sysinfo_data_offsets");
-
-	/* convert sysinfo data offset bytes into integers */
-
-	si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
-			si->si_data.map_szl);
-	si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
-			si->si_data.map_szl);
-	si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh,
-			si->si_data.cydata_ofsl);
-	si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh,
-			si->si_data.test_ofsl);
-	si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh,
-			si->si_data.pcfg_ofsl);
-	si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh,
-			si->si_data.opcfg_ofsl);
-	si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh,
-			si->si_data.ddata_ofsl);
-	si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh,
-			si->si_data.mdata_ofsl);
-	return rc;
-}
-
-static int cyttsp4_si_get_cydata(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	int read_offset;
-	int mfgid_sz, calc_mfgid_sz;
-	void *p;
-	int rc;
-
-	if (si->si_ofs.test_ofs <= si->si_ofs.cydata_ofs) {
-		dev_err(cd->dev,
-			"%s: invalid offset test_ofs: %zu, cydata_ofs: %zu\n",
-			__func__, si->si_ofs.test_ofs, si->si_ofs.cydata_ofs);
-		return -EINVAL;
-	}
-
-	si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs;
-	dev_dbg(cd->dev, "%s: cydata size: %zd\n", __func__,
-			si->si_ofs.cydata_size);
-
-	p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL);
-	if (p == NULL) {
-		dev_err(cd->dev, "%s: failed to allocate cydata memory\n",
-			__func__);
-		return -ENOMEM;
-	}
-	si->si_ptrs.cydata = p;
-
-	read_offset = si->si_ofs.cydata_ofs;
-
-	/* Read the CYDA registers up to MFGID field */
-	rc = cyttsp4_adap_read(cd, read_offset,
-			offsetof(struct cyttsp4_cydata, mfgid_sz)
-				+ sizeof(si->si_ptrs.cydata->mfgid_sz),
-			si->si_ptrs.cydata);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read cydata r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-
-	/* Check MFGID size */
-	mfgid_sz = si->si_ptrs.cydata->mfgid_sz;
-	calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata);
-	if (mfgid_sz != calc_mfgid_sz) {
-		dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n",
-			__func__, mfgid_sz, calc_mfgid_sz);
-		return -EINVAL;
-	}
-
-	read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz)
-			+ sizeof(si->si_ptrs.cydata->mfgid_sz);
-
-	/* Read the CYDA registers for MFGID field */
-	rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz,
-			si->si_ptrs.cydata->mfg_id);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read cydata r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-
-	read_offset += si->si_ptrs.cydata->mfgid_sz;
-
-	/* Read the rest of the CYDA registers */
-	rc = cyttsp4_adap_read(cd, read_offset,
-			sizeof(struct cyttsp4_cydata)
-				- offsetof(struct cyttsp4_cydata, cyito_idh),
-			&si->si_ptrs.cydata->cyito_idh);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read cydata r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-
-	cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata,
-		si->si_ofs.cydata_size, "sysinfo_cydata");
-	return rc;
-}
-
-static int cyttsp4_si_get_test_data(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	void *p;
-	int rc;
-
-	if (si->si_ofs.pcfg_ofs <= si->si_ofs.test_ofs) {
-		dev_err(cd->dev,
-			"%s: invalid offset pcfg_ofs: %zu, test_ofs: %zu\n",
-			__func__, si->si_ofs.pcfg_ofs, si->si_ofs.test_ofs);
-		return -EINVAL;
-	}
-
-	si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs;
-
-	p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL);
-	if (p == NULL) {
-		dev_err(cd->dev, "%s: failed to allocate test memory\n",
-			__func__);
-		return -ENOMEM;
-	}
-	si->si_ptrs.test = p;
-
-	rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size,
-			si->si_ptrs.test);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read test data r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-
-	cyttsp4_pr_buf(cd->dev, cd->pr_buf,
-		       (u8 *)si->si_ptrs.test, si->si_ofs.test_size,
-		       "sysinfo_test_data");
-	if (si->si_ptrs.test->post_codel &
-	    CY_POST_CODEL_WDG_RST)
-		dev_info(cd->dev, "%s: %s codel=%02X\n",
-			 __func__, "Reset was a WATCHDOG RESET",
-			 si->si_ptrs.test->post_codel);
-
-	if (!(si->si_ptrs.test->post_codel &
-	      CY_POST_CODEL_CFG_DATA_CRC_FAIL))
-		dev_info(cd->dev, "%s: %s codel=%02X\n", __func__,
-			 "Config Data CRC FAIL",
-			 si->si_ptrs.test->post_codel);
-
-	if (!(si->si_ptrs.test->post_codel &
-	      CY_POST_CODEL_PANEL_TEST_FAIL))
-		dev_info(cd->dev, "%s: %s codel=%02X\n",
-			 __func__, "PANEL TEST FAIL",
-			 si->si_ptrs.test->post_codel);
-
-	dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n",
-		 __func__, si->si_ptrs.test->post_codel & 0x08 ?
-		 "ENABLED" : "DISABLED",
-		 si->si_ptrs.test->post_codel);
-	return rc;
-}
-
-static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	void *p;
-	int rc;
-
-	if (si->si_ofs.opcfg_ofs <= si->si_ofs.pcfg_ofs) {
-		dev_err(cd->dev,
-			"%s: invalid offset opcfg_ofs: %zu, pcfg_ofs: %zu\n",
-			__func__, si->si_ofs.opcfg_ofs, si->si_ofs.pcfg_ofs);
-		return -EINVAL;
-	}
-
-	si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs;
-
-	p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL);
-	if (p == NULL) {
-		dev_err(cd->dev, "%s: failed to allocate pcfg memory\n",
-			__func__);
-		return -ENOMEM;
-	}
-	si->si_ptrs.pcfg = p;
-
-	rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size,
-			si->si_ptrs.pcfg);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read pcfg data r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-
-	si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh
-			& CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl);
-	si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh
-			& CY_PCFG_ORIGIN_X_MASK);
-	si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh
-			& CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl);
-	si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh
-			& CY_PCFG_ORIGIN_Y_MASK);
-	si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh,
-			si->si_ptrs.pcfg->max_zl);
-
-	cyttsp4_pr_buf(cd->dev, cd->pr_buf,
-		       (u8 *)si->si_ptrs.pcfg,
-		       si->si_ofs.pcfg_size, "sysinfo_pcfg_data");
-	return rc;
-}
-
-static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	struct cyttsp4_tch_abs_params *tch;
-	struct cyttsp4_tch_rec_params *tch_old, *tch_new;
-	enum cyttsp4_tch_abs abs;
-	int i;
-	void *p;
-	int rc;
-
-	if (si->si_ofs.ddata_ofs <= si->si_ofs.opcfg_ofs) {
-		dev_err(cd->dev,
-			"%s: invalid offset ddata_ofs: %zu, opcfg_ofs: %zu\n",
-			__func__, si->si_ofs.ddata_ofs, si->si_ofs.opcfg_ofs);
-		return -EINVAL;
-	}
-
-	si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs;
-
-	p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL);
-	if (p == NULL) {
-		dev_err(cd->dev, "%s: failed to allocate opcfg memory\n",
-			__func__);
-		return -ENOMEM;
-	}
-	si->si_ptrs.opcfg = p;
-
-	rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size,
-			si->si_ptrs.opcfg);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail read opcfg data r=%d\n",
-			__func__, rc);
-		return rc;
-	}
-	si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs;
-	si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs;
-	si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) +
-		si->si_ptrs.opcfg->rep_szl;
-	si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns;
-	si->si_ofs.num_btn_regs = (si->si_ofs.num_btns +
-		CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG;
-	si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs;
-	si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0;
-	si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs &
-		CY_BYTE_OFS_MASK;
-	si->si_ofs.tch_rec_size = si->si_ptrs.opcfg->tch_rec_size &
-		CY_BYTE_OFS_MASK;
-
-	/* Get the old touch fields */
-	for (abs = CY_TCH_X; abs < CY_NUM_TCH_FIELDS; abs++) {
-		tch = &si->si_ofs.tch_abs[abs];
-		tch_old = &si->si_ptrs.opcfg->tch_rec_old[abs];
-
-		tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK;
-		tch->size = cyttsp4_bits_2_bytes(tch_old->size,
-						 &tch->max);
-		tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
-	}
-
-	/* button fields */
-	si->si_ofs.btn_rec_size = si->si_ptrs.opcfg->btn_rec_size;
-	si->si_ofs.btn_diff_ofs = si->si_ptrs.opcfg->btn_diff_ofs;
-	si->si_ofs.btn_diff_size = si->si_ptrs.opcfg->btn_diff_size;
-
-	if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
-		/* Get the extended touch fields */
-		for (i = 0; i < CY_NUM_EXT_TCH_FIELDS; abs++, i++) {
-			tch = &si->si_ofs.tch_abs[abs];
-			tch_new = &si->si_ptrs.opcfg->tch_rec_new[i];
-
-			tch->ofs = tch_new->loc & CY_BYTE_OFS_MASK;
-			tch->size = cyttsp4_bits_2_bytes(tch_new->size,
-							 &tch->max);
-			tch->bofs = (tch_new->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
-		}
-	}
-
-	for (abs = 0; abs < CY_TCH_NUM_ABS; abs++) {
-		dev_dbg(cd->dev, "%s: tch_rec_%s\n", __func__,
-			cyttsp4_tch_abs_string[abs]);
-		dev_dbg(cd->dev, "%s:     ofs =%2zd\n", __func__,
-			si->si_ofs.tch_abs[abs].ofs);
-		dev_dbg(cd->dev, "%s:     siz =%2zd\n", __func__,
-			si->si_ofs.tch_abs[abs].size);
-		dev_dbg(cd->dev, "%s:     max =%2zd\n", __func__,
-			si->si_ofs.tch_abs[abs].max);
-		dev_dbg(cd->dev, "%s:     bofs=%2zd\n", __func__,
-			si->si_ofs.tch_abs[abs].bofs);
-	}
-
-	si->si_ofs.mode_size = si->si_ofs.tt_stat_ofs + 1;
-	si->si_ofs.data_size = si->si_ofs.max_tchs *
-		si->si_ptrs.opcfg->tch_rec_size;
-
-	cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.opcfg,
-		si->si_ofs.opcfg_size, "sysinfo_opcfg_data");
-
-	return 0;
-}
-
-static int cyttsp4_si_get_ddata(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	void *p;
-	int rc;
-
-	si->si_ofs.ddata_size = si->si_ofs.mdata_ofs - si->si_ofs.ddata_ofs;
-
-	p = krealloc(si->si_ptrs.ddata, si->si_ofs.ddata_size, GFP_KERNEL);
-	if (p == NULL) {
-		dev_err(cd->dev, "%s: fail alloc ddata memory\n", __func__);
-		return -ENOMEM;
-	}
-	si->si_ptrs.ddata = p;
-
-	rc = cyttsp4_adap_read(cd, si->si_ofs.ddata_ofs, si->si_ofs.ddata_size,
-			si->si_ptrs.ddata);
-	if (rc < 0)
-		dev_err(cd->dev, "%s: fail read ddata data r=%d\n",
-			__func__, rc);
-	else
-		cyttsp4_pr_buf(cd->dev, cd->pr_buf,
-			       (u8 *)si->si_ptrs.ddata,
-			       si->si_ofs.ddata_size, "sysinfo_ddata");
-	return rc;
-}
-
-static int cyttsp4_si_get_mdata(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	void *p;
-	int rc;
-
-	si->si_ofs.mdata_size = si->si_ofs.map_sz - si->si_ofs.mdata_ofs;
-
-	p = krealloc(si->si_ptrs.mdata, si->si_ofs.mdata_size, GFP_KERNEL);
-	if (p == NULL) {
-		dev_err(cd->dev, "%s: fail alloc mdata memory\n", __func__);
-		return -ENOMEM;
-	}
-	si->si_ptrs.mdata = p;
-
-	rc = cyttsp4_adap_read(cd, si->si_ofs.mdata_ofs, si->si_ofs.mdata_size,
-			si->si_ptrs.mdata);
-	if (rc < 0)
-		dev_err(cd->dev, "%s: fail read mdata data r=%d\n",
-			__func__, rc);
-	else
-		cyttsp4_pr_buf(cd->dev, cd->pr_buf,
-			       (u8 *)si->si_ptrs.mdata,
-			       si->si_ofs.mdata_size, "sysinfo_mdata");
-	return rc;
-}
-
-static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	int btn;
-	int num_defined_keys;
-	u16 *key_table;
-	void *p;
-	int rc = 0;
-
-	if (si->si_ofs.num_btns) {
-		si->si_ofs.btn_keys_size = si->si_ofs.num_btns *
-			sizeof(struct cyttsp4_btn);
-
-		p = krealloc(si->btn, si->si_ofs.btn_keys_size,
-				GFP_KERNEL|__GFP_ZERO);
-		if (p == NULL) {
-			dev_err(cd->dev, "%s: %s\n", __func__,
-				"fail alloc btn_keys memory");
-			return -ENOMEM;
-		}
-		si->btn = p;
-
-		if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS] == NULL)
-			num_defined_keys = 0;
-		else if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS]->data == NULL)
-			num_defined_keys = 0;
-		else
-			num_defined_keys = cd->cpdata->sett
-				[CY_IC_GRPNUM_BTN_KEYS]->size;
-
-		for (btn = 0; btn < si->si_ofs.num_btns &&
-			btn < num_defined_keys; btn++) {
-			key_table = (u16 *)cd->cpdata->sett
-				[CY_IC_GRPNUM_BTN_KEYS]->data;
-			si->btn[btn].key_code = key_table[btn];
-			si->btn[btn].state = CY_BTN_RELEASED;
-			si->btn[btn].enabled = true;
-		}
-		for (; btn < si->si_ofs.num_btns; btn++) {
-			si->btn[btn].key_code = KEY_RESERVED;
-			si->btn[btn].state = CY_BTN_RELEASED;
-			si->btn[btn].enabled = true;
-		}
-
-		return rc;
-	}
-
-	si->si_ofs.btn_keys_size = 0;
-	kfree(si->btn);
-	si->btn = NULL;
-	return rc;
-}
-
-static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	void *p;
-
-	p = krealloc(si->xy_mode, si->si_ofs.mode_size, GFP_KERNEL|__GFP_ZERO);
-	if (p == NULL)
-		return -ENOMEM;
-	si->xy_mode = p;
-
-	p = krealloc(si->xy_data, si->si_ofs.data_size, GFP_KERNEL|__GFP_ZERO);
-	if (p == NULL)
-		return -ENOMEM;
-	si->xy_data = p;
-
-	p = krealloc(si->btn_rec_data,
-			si->si_ofs.btn_rec_size * si->si_ofs.num_btns,
-			GFP_KERNEL|__GFP_ZERO);
-	if (p == NULL)
-		return -ENOMEM;
-	si->btn_rec_data = p;
-
-	return 0;
-}
-
-static void cyttsp4_si_put_log_data(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	dev_dbg(cd->dev, "%s: cydata_ofs =%4zd siz=%4zd\n", __func__,
-		si->si_ofs.cydata_ofs, si->si_ofs.cydata_size);
-	dev_dbg(cd->dev, "%s: test_ofs   =%4zd siz=%4zd\n", __func__,
-		si->si_ofs.test_ofs, si->si_ofs.test_size);
-	dev_dbg(cd->dev, "%s: pcfg_ofs   =%4zd siz=%4zd\n", __func__,
-		si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size);
-	dev_dbg(cd->dev, "%s: opcfg_ofs  =%4zd siz=%4zd\n", __func__,
-		si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size);
-	dev_dbg(cd->dev, "%s: ddata_ofs  =%4zd siz=%4zd\n", __func__,
-		si->si_ofs.ddata_ofs, si->si_ofs.ddata_size);
-	dev_dbg(cd->dev, "%s: mdata_ofs  =%4zd siz=%4zd\n", __func__,
-		si->si_ofs.mdata_ofs, si->si_ofs.mdata_size);
-
-	dev_dbg(cd->dev, "%s: cmd_ofs       =%4zd\n", __func__,
-		si->si_ofs.cmd_ofs);
-	dev_dbg(cd->dev, "%s: rep_ofs       =%4zd\n", __func__,
-		si->si_ofs.rep_ofs);
-	dev_dbg(cd->dev, "%s: rep_sz        =%4zd\n", __func__,
-		si->si_ofs.rep_sz);
-	dev_dbg(cd->dev, "%s: num_btns      =%4zd\n", __func__,
-		si->si_ofs.num_btns);
-	dev_dbg(cd->dev, "%s: num_btn_regs  =%4zd\n", __func__,
-		si->si_ofs.num_btn_regs);
-	dev_dbg(cd->dev, "%s: tt_stat_ofs   =%4zd\n", __func__,
-		si->si_ofs.tt_stat_ofs);
-	dev_dbg(cd->dev, "%s: tch_rec_size  =%4zd\n", __func__,
-		si->si_ofs.tch_rec_size);
-	dev_dbg(cd->dev, "%s: max_tchs      =%4zd\n", __func__,
-		si->si_ofs.max_tchs);
-	dev_dbg(cd->dev, "%s: mode_size     =%4zd\n", __func__,
-		si->si_ofs.mode_size);
-	dev_dbg(cd->dev, "%s: data_size     =%4zd\n", __func__,
-		si->si_ofs.data_size);
-	dev_dbg(cd->dev, "%s: map_sz        =%4zd\n", __func__,
-		si->si_ofs.map_sz);
-
-	dev_dbg(cd->dev, "%s: btn_rec_size   =%2zd\n", __func__,
-		si->si_ofs.btn_rec_size);
-	dev_dbg(cd->dev, "%s: btn_diff_ofs   =%2zd\n", __func__,
-		si->si_ofs.btn_diff_ofs);
-	dev_dbg(cd->dev, "%s: btn_diff_size  =%2zd\n", __func__,
-		si->si_ofs.btn_diff_size);
-
-	dev_dbg(cd->dev, "%s: max_x    = 0x%04zX (%zd)\n", __func__,
-		si->si_ofs.max_x, si->si_ofs.max_x);
-	dev_dbg(cd->dev, "%s: x_origin = %zd (%s)\n", __func__,
-		si->si_ofs.x_origin,
-		si->si_ofs.x_origin == CY_NORMAL_ORIGIN ?
-		"left corner" : "right corner");
-	dev_dbg(cd->dev, "%s: max_y    = 0x%04zX (%zd)\n", __func__,
-		si->si_ofs.max_y, si->si_ofs.max_y);
-	dev_dbg(cd->dev, "%s: y_origin = %zd (%s)\n", __func__,
-		si->si_ofs.y_origin,
-		si->si_ofs.y_origin == CY_NORMAL_ORIGIN ?
-		"upper corner" : "lower corner");
-	dev_dbg(cd->dev, "%s: max_p    = 0x%04zX (%zd)\n", __func__,
-		si->si_ofs.max_p, si->si_ofs.max_p);
-
-	dev_dbg(cd->dev, "%s: xy_mode=%p xy_data=%p\n", __func__,
-		si->xy_mode, si->xy_data);
-}
-
-static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-	int rc;
-
-	rc = cyttsp4_si_data_offsets(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_cydata(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_test_data(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_pcfg_data(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_opcfg_data(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_ddata(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_mdata(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_btn_data(cd);
-	if (rc < 0)
-		return rc;
-
-	rc = cyttsp4_si_get_op_data_ptrs(cd);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: failed to get_op_data\n",
-			__func__);
-		return rc;
-	}
-
-	cyttsp4_si_put_log_data(cd);
-
-	/* provide flow control handshake */
-	rc = cyttsp4_handshake(cd, si->si_data.hst_mode);
-	if (rc < 0)
-		dev_err(cd->dev, "%s: handshake fail on sysinfo reg\n",
-			__func__);
-
-	si->ready = true;
-	return rc;
-}
-
-static void cyttsp4_queue_startup_(struct cyttsp4 *cd)
-{
-	if (cd->startup_state == STARTUP_NONE) {
-		cd->startup_state = STARTUP_QUEUED;
-		schedule_work(&cd->startup_work);
-		dev_dbg(cd->dev, "%s: cyttsp4_startup queued\n", __func__);
-	} else {
-		dev_dbg(cd->dev, "%s: startup_state = %d\n", __func__,
-			cd->startup_state);
-	}
-}
-
-static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md,
-		int max_slots)
-{
-	int t;
-
-	if (md->num_prv_tch == 0)
-		return;
-
-	for (t = 0; t < max_slots; t++) {
-		input_mt_slot(md->input, t);
-		input_mt_report_slot_inactive(md->input);
-	}
-}
-
-static void cyttsp4_lift_all(struct cyttsp4_mt_data *md)
-{
-	if (!md->si)
-		return;
-
-	if (md->num_prv_tch != 0) {
-		cyttsp4_report_slot_liftoff(md,
-				md->si->si_ofs.tch_abs[CY_TCH_T].max);
-		input_sync(md->input);
-		md->num_prv_tch = 0;
-	}
-}
-
-static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md,
-	int *axis, int size, int max, u8 *xy_data, int bofs)
-{
-	int nbyte;
-	int next;
-
-	for (nbyte = 0, *axis = 0, next = 0; nbyte < size; nbyte++) {
-		dev_vdbg(&md->input->dev,
-			"%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
-			" xy_data[%d]=%02X(%d) bofs=%d\n",
-			__func__, *axis, *axis, size, max, xy_data, next,
-			xy_data[next], xy_data[next], bofs);
-		*axis = (*axis * 256) + (xy_data[next] >> bofs);
-		next++;
-	}
-
-	*axis &= max - 1;
-
-	dev_vdbg(&md->input->dev,
-		"%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
-		" xy_data[%d]=%02X(%d)\n",
-		__func__, *axis, *axis, size, max, xy_data, next,
-		xy_data[next], xy_data[next]);
-}
-
-static void cyttsp4_get_touch(struct cyttsp4_mt_data *md,
-	struct cyttsp4_touch *touch, u8 *xy_data)
-{
-	struct device *dev = &md->input->dev;
-	struct cyttsp4_sysinfo *si = md->si;
-	enum cyttsp4_tch_abs abs;
-	bool flipped;
-
-	for (abs = CY_TCH_X; abs < CY_TCH_NUM_ABS; abs++) {
-		cyttsp4_get_touch_axis(md, &touch->abs[abs],
-			si->si_ofs.tch_abs[abs].size,
-			si->si_ofs.tch_abs[abs].max,
-			xy_data + si->si_ofs.tch_abs[abs].ofs,
-			si->si_ofs.tch_abs[abs].bofs);
-		dev_vdbg(dev, "%s: get %s=%04X(%d)\n", __func__,
-			cyttsp4_tch_abs_string[abs],
-			touch->abs[abs], touch->abs[abs]);
-	}
-
-	if (md->pdata->flags & CY_FLAG_FLIP) {
-		swap(touch->abs[CY_TCH_X], touch->abs[CY_TCH_Y]);
-		flipped = true;
-	} else
-		flipped = false;
-
-	if (md->pdata->flags & CY_FLAG_INV_X) {
-		if (flipped)
-			touch->abs[CY_TCH_X] = md->si->si_ofs.max_y -
-				touch->abs[CY_TCH_X];
-		else
-			touch->abs[CY_TCH_X] = md->si->si_ofs.max_x -
-				touch->abs[CY_TCH_X];
-	}
-	if (md->pdata->flags & CY_FLAG_INV_Y) {
-		if (flipped)
-			touch->abs[CY_TCH_Y] = md->si->si_ofs.max_x -
-				touch->abs[CY_TCH_Y];
-		else
-			touch->abs[CY_TCH_Y] = md->si->si_ofs.max_y -
-				touch->abs[CY_TCH_Y];
-	}
-
-	dev_vdbg(dev, "%s: flip=%s inv-x=%s inv-y=%s x=%04X(%d) y=%04X(%d)\n",
-		__func__, flipped ? "true" : "false",
-		md->pdata->flags & CY_FLAG_INV_X ? "true" : "false",
-		md->pdata->flags & CY_FLAG_INV_Y ? "true" : "false",
-		touch->abs[CY_TCH_X], touch->abs[CY_TCH_X],
-		touch->abs[CY_TCH_Y], touch->abs[CY_TCH_Y]);
-}
-
-static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids)
-{
-	int t;
-
-	for (t = 0; t < max_slots; t++) {
-		if (ids[t])
-			continue;
-		input_mt_slot(input, t);
-		input_mt_report_slot_inactive(input);
-	}
-
-	input_sync(input);
-}
-
-static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
-{
-	struct device *dev = &md->input->dev;
-	struct cyttsp4_sysinfo *si = md->si;
-	struct cyttsp4_touch tch;
-	int sig;
-	int i, j, t = 0;
-	int ids[MAX(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
-
-	memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
-	for (i = 0; i < num_cur_tch; i++) {
-		cyttsp4_get_touch(md, &tch, si->xy_data +
-			(i * si->si_ofs.tch_rec_size));
-		if ((tch.abs[CY_TCH_T] < md->pdata->frmwrk->abs
-			[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST]) ||
-			(tch.abs[CY_TCH_T] > md->pdata->frmwrk->abs
-			[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MAX_OST])) {
-			dev_err(dev, "%s: tch=%d -> bad trk_id=%d max_id=%d\n",
-				__func__, i, tch.abs[CY_TCH_T],
-				md->pdata->frmwrk->abs[(CY_ABS_ID_OST *
-				CY_NUM_ABS_SET) + CY_MAX_OST]);
-			continue;
-		}
-
-		/* use 0 based track id's */
-		sig = md->pdata->frmwrk->abs
-			[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + 0];
-		if (sig != CY_IGNORE_VALUE) {
-			t = tch.abs[CY_TCH_T] - md->pdata->frmwrk->abs
-				[(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST];
-			if (tch.abs[CY_TCH_E] == CY_EV_LIFTOFF) {
-				dev_dbg(dev, "%s: t=%d e=%d lift-off\n",
-					__func__, t, tch.abs[CY_TCH_E]);
-				goto cyttsp4_get_mt_touches_pr_tch;
-			}
-			input_mt_slot(md->input, t);
-			input_mt_report_slot_state(md->input, MT_TOOL_FINGER,
-					true);
-			ids[t] = true;
-		}
-
-		/* all devices: position and pressure fields */
-		for (j = 0; j <= CY_ABS_W_OST; j++) {
-			sig = md->pdata->frmwrk->abs[((CY_ABS_X_OST + j) *
-				CY_NUM_ABS_SET) + 0];
-			if (sig != CY_IGNORE_VALUE)
-				input_report_abs(md->input, sig,
-					tch.abs[CY_TCH_X + j]);
-		}
-		if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
-			/*
-			 * TMA400 size and orientation fields:
-			 * if pressure is non-zero and major touch
-			 * signal is zero, then set major and minor touch
-			 * signals to minimum non-zero value
-			 */
-			if (tch.abs[CY_TCH_P] > 0 && tch.abs[CY_TCH_MAJ] == 0)
-				tch.abs[CY_TCH_MAJ] = tch.abs[CY_TCH_MIN] = 1;
-
-			/* Get the extended touch fields */
-			for (j = 0; j < CY_NUM_EXT_TCH_FIELDS; j++) {
-				sig = md->pdata->frmwrk->abs
-					[((CY_ABS_MAJ_OST + j) *
-					CY_NUM_ABS_SET) + 0];
-				if (sig != CY_IGNORE_VALUE)
-					input_report_abs(md->input, sig,
-						tch.abs[CY_TCH_MAJ + j]);
-			}
-		}
-
-cyttsp4_get_mt_touches_pr_tch:
-		if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE)
-			dev_dbg(dev,
-				"%s: t=%d x=%d y=%d z=%d M=%d m=%d o=%d e=%d\n",
-				__func__, t,
-				tch.abs[CY_TCH_X],
-				tch.abs[CY_TCH_Y],
-				tch.abs[CY_TCH_P],
-				tch.abs[CY_TCH_MAJ],
-				tch.abs[CY_TCH_MIN],
-				tch.abs[CY_TCH_OR],
-				tch.abs[CY_TCH_E]);
-		else
-			dev_dbg(dev,
-				"%s: t=%d x=%d y=%d z=%d e=%d\n", __func__,
-				t,
-				tch.abs[CY_TCH_X],
-				tch.abs[CY_TCH_Y],
-				tch.abs[CY_TCH_P],
-				tch.abs[CY_TCH_E]);
-	}
-
-	cyttsp4_final_sync(md->input, si->si_ofs.tch_abs[CY_TCH_T].max, ids);
-
-	md->num_prv_tch = num_cur_tch;
-
-	return;
-}
-
-/* read xy_data for all current touches */
-static int cyttsp4_xy_worker(struct cyttsp4 *cd)
-{
-	struct cyttsp4_mt_data *md = &cd->md;
-	struct device *dev = &md->input->dev;
-	struct cyttsp4_sysinfo *si = md->si;
-	u8 num_cur_tch;
-	u8 hst_mode;
-	u8 rep_len;
-	u8 rep_stat;
-	u8 tt_stat;
-	int rc = 0;
-
-	/*
-	 * Get event data from cyttsp4 device.
-	 * The event data includes all data
-	 * for all active touches.
-	 * Event data also includes button data
-	 */
-	/*
-	 * Use 2 reads:
-	 * 1st read to get mode + button bytes + touch count (core)
-	 * 2nd read (optional) to get touch 1 - touch n data
-	 */
-	hst_mode = si->xy_mode[CY_REG_BASE];
-	rep_len = si->xy_mode[si->si_ofs.rep_ofs];
-	rep_stat = si->xy_mode[si->si_ofs.rep_ofs + 1];
-	tt_stat = si->xy_mode[si->si_ofs.tt_stat_ofs];
-	dev_vdbg(dev, "%s: %s%02X %s%d %s%02X %s%02X\n", __func__,
-		"hst_mode=", hst_mode, "rep_len=", rep_len,
-		"rep_stat=", rep_stat, "tt_stat=", tt_stat);
-
-	num_cur_tch = GET_NUM_TOUCHES(tt_stat);
-	dev_vdbg(dev, "%s: num_cur_tch=%d\n", __func__, num_cur_tch);
-
-	if (rep_len == 0 && num_cur_tch > 0) {
-		dev_err(dev, "%s: report length error rep_len=%d num_tch=%d\n",
-			__func__, rep_len, num_cur_tch);
-		goto cyttsp4_xy_worker_exit;
-	}
-
-	/* read touches */
-	if (num_cur_tch > 0) {
-		rc = cyttsp4_adap_read(cd, si->si_ofs.tt_stat_ofs + 1,
-				num_cur_tch * si->si_ofs.tch_rec_size,
-				si->xy_data);
-		if (rc < 0) {
-			dev_err(dev, "%s: read fail on touch regs r=%d\n",
-				__func__, rc);
-			goto cyttsp4_xy_worker_exit;
-		}
-	}
-
-	/* print xy data */
-	cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_data, num_cur_tch *
-		si->si_ofs.tch_rec_size, "xy_data");
-
-	/* check any error conditions */
-	if (IS_BAD_PKT(rep_stat)) {
-		dev_dbg(dev, "%s: Invalid buffer detected\n", __func__);
-		rc = 0;
-		goto cyttsp4_xy_worker_exit;
-	}
-
-	if (IS_LARGE_AREA(tt_stat))
-		dev_dbg(dev, "%s: Large area detected\n", __func__);
-
-	if (num_cur_tch > si->si_ofs.max_tchs) {
-		dev_err(dev, "%s: too many tch; set to max tch (n=%d c=%zd)\n",
-				__func__, num_cur_tch, si->si_ofs.max_tchs);
-		num_cur_tch = si->si_ofs.max_tchs;
-	}
-
-	/* extract xy_data for all currently reported touches */
-	dev_vdbg(dev, "%s: extract data num_cur_tch=%d\n", __func__,
-		num_cur_tch);
-	if (num_cur_tch)
-		cyttsp4_get_mt_touches(md, num_cur_tch);
-	else
-		cyttsp4_lift_all(md);
-
-	rc = 0;
-
-cyttsp4_xy_worker_exit:
-	return rc;
-}
-
-static int cyttsp4_mt_attention(struct cyttsp4 *cd)
-{
-	struct device *dev = cd->dev;
-	struct cyttsp4_mt_data *md = &cd->md;
-	int rc = 0;
-
-	if (!md->si)
-		return 0;
-
-	mutex_lock(&md->report_lock);
-	if (!md->is_suspended) {
-		/* core handles handshake */
-		rc = cyttsp4_xy_worker(cd);
-	} else {
-		dev_vdbg(dev, "%s: Ignoring report while suspended\n",
-			__func__);
-	}
-	mutex_unlock(&md->report_lock);
-	if (rc < 0)
-		dev_err(dev, "%s: xy_worker error r=%d\n", __func__, rc);
-
-	return rc;
-}
-
-static irqreturn_t cyttsp4_irq(int irq, void *handle)
-{
-	struct cyttsp4 *cd = handle;
-	struct device *dev = cd->dev;
-	enum cyttsp4_mode cur_mode;
-	u8 cmd_ofs = cd->sysinfo.si_ofs.cmd_ofs;
-	u8 mode[3];
-	int rc;
-
-	/*
-	 * Check whether this IRQ should be ignored (external)
-	 * This should be the very first thing to check since
-	 * ignore_irq may be set for a very short period of time
-	 */
-	if (atomic_read(&cd->ignore_irq)) {
-		dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
-		return IRQ_HANDLED;
-	}
-
-	dev_dbg(dev, "%s int:0x%x\n", __func__, cd->int_status);
-
-	mutex_lock(&cd->system_lock);
-
-	/* Just to debug */
-	if (cd->sleep_state == SS_SLEEP_ON || cd->sleep_state == SS_SLEEPING)
-		dev_vdbg(dev, "%s: Received IRQ while in sleep\n", __func__);
-
-	rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), mode);
-	if (rc) {
-		dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
-		goto cyttsp4_irq_exit;
-	}
-	dev_vdbg(dev, "%s mode[0-2]:0x%X 0x%X 0x%X\n", __func__,
-			mode[0], mode[1], mode[2]);
-
-	if (IS_BOOTLOADER(mode[0], mode[1])) {
-		cur_mode = CY_MODE_BOOTLOADER;
-		dev_vdbg(dev, "%s: bl running\n", __func__);
-		if (cd->mode == CY_MODE_BOOTLOADER) {
-			/* Signal bootloader heartbeat heard */
-			wake_up(&cd->wait_q);
-			goto cyttsp4_irq_exit;
-		}
-
-		/* switch to bootloader */
-		dev_dbg(dev, "%s: restart switch to bl m=%d -> m=%d\n",
-			__func__, cd->mode, cur_mode);
-
-		/* catch operation->bl glitch */
-		if (cd->mode != CY_MODE_UNKNOWN) {
-			/* Incase startup_state do not let startup_() */
-			cd->mode = CY_MODE_UNKNOWN;
-			cyttsp4_queue_startup_(cd);
-			goto cyttsp4_irq_exit;
-		}
-
-		/*
-		 * do not wake thread on this switch since
-		 * it is possible to get an early heartbeat
-		 * prior to performing the reset
-		 */
-		cd->mode = cur_mode;
-
-		goto cyttsp4_irq_exit;
-	}
-
-	switch (mode[0] & CY_HST_MODE) {
-	case CY_HST_OPERATE:
-		cur_mode = CY_MODE_OPERATIONAL;
-		dev_vdbg(dev, "%s: operational\n", __func__);
-		break;
-	case CY_HST_CAT:
-		cur_mode = CY_MODE_CAT;
-		dev_vdbg(dev, "%s: CaT\n", __func__);
-		break;
-	case CY_HST_SYSINFO:
-		cur_mode = CY_MODE_SYSINFO;
-		dev_vdbg(dev, "%s: sysinfo\n", __func__);
-		break;
-	default:
-		cur_mode = CY_MODE_UNKNOWN;
-		dev_err(dev, "%s: unknown HST mode 0x%02X\n", __func__,
-			mode[0]);
-		break;
-	}
-
-	/* Check whether this IRQ should be ignored (internal) */
-	if (cd->int_status & CY_INT_IGNORE) {
-		dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
-		goto cyttsp4_irq_exit;
-	}
-
-	/* Check for wake up interrupt */
-	if (cd->int_status & CY_INT_AWAKE) {
-		cd->int_status &= ~CY_INT_AWAKE;
-		wake_up(&cd->wait_q);
-		dev_vdbg(dev, "%s: Received wake up interrupt\n", __func__);
-		goto cyttsp4_irq_handshake;
-	}
-
-	/* Expecting mode change interrupt */
-	if ((cd->int_status & CY_INT_MODE_CHANGE)
-			&& (mode[0] & CY_HST_MODE_CHANGE) == 0) {
-		cd->int_status &= ~CY_INT_MODE_CHANGE;
-		dev_dbg(dev, "%s: finish mode switch m=%d -> m=%d\n",
-				__func__, cd->mode, cur_mode);
-		cd->mode = cur_mode;
-		wake_up(&cd->wait_q);
-		goto cyttsp4_irq_handshake;
-	}
-
-	/* compare current core mode to current device mode */
-	dev_vdbg(dev, "%s: cd->mode=%d cur_mode=%d\n",
-			__func__, cd->mode, cur_mode);
-	if ((mode[0] & CY_HST_MODE_CHANGE) == 0 && cd->mode != cur_mode) {
-		/* Unexpected mode change occurred */
-		dev_err(dev, "%s %d->%d 0x%x\n", __func__, cd->mode,
-				cur_mode, cd->int_status);
-		dev_dbg(dev, "%s: Unexpected mode change, startup\n",
-				__func__);
-		cyttsp4_queue_startup_(cd);
-		goto cyttsp4_irq_exit;
-	}
-
-	/* Expecting command complete interrupt */
-	dev_vdbg(dev, "%s: command byte:0x%x\n", __func__, mode[cmd_ofs]);
-	if ((cd->int_status & CY_INT_EXEC_CMD)
-			&& mode[cmd_ofs] & CY_CMD_COMPLETE) {
-		cd->int_status &= ~CY_INT_EXEC_CMD;
-		dev_vdbg(dev, "%s: Received command complete interrupt\n",
-				__func__);
-		wake_up(&cd->wait_q);
-		/*
-		 * It is possible to receive a single interrupt for
-		 * command complete and touch/button status report.
-		 * Continue processing for a possible status report.
-		 */
-	}
-
-	/* This should be status report, read status regs */
-	if (cd->mode == CY_MODE_OPERATIONAL) {
-		dev_vdbg(dev, "%s: Read status registers\n", __func__);
-		rc = cyttsp4_load_status_regs(cd);
-		if (rc < 0)
-			dev_err(dev, "%s: fail read mode regs r=%d\n",
-				__func__, rc);
-	}
-
-	cyttsp4_mt_attention(cd);
-
-cyttsp4_irq_handshake:
-	/* handshake the event */
-	dev_vdbg(dev, "%s: Handshake mode=0x%02X r=%d\n",
-			__func__, mode[0], rc);
-	rc = cyttsp4_handshake(cd, mode[0]);
-	if (rc < 0)
-		dev_err(dev, "%s: Fail handshake mode=0x%02X r=%d\n",
-				__func__, mode[0], rc);
-
-	/*
-	 * a non-zero udelay period is required for using
-	 * IRQF_TRIGGER_LOW in order to delay until the
-	 * device completes isr deassert
-	 */
-	udelay(cd->cpdata->level_irq_udelay);
-
-cyttsp4_irq_exit:
-	mutex_unlock(&cd->system_lock);
-	return IRQ_HANDLED;
-}
-
-static void cyttsp4_start_wd_timer(struct cyttsp4 *cd)
-{
-	if (!CY_WATCHDOG_TIMEOUT)
-		return;
-
-	mod_timer(&cd->watchdog_timer, jiffies +
-			msecs_to_jiffies(CY_WATCHDOG_TIMEOUT));
-}
-
-static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
-{
-	if (!CY_WATCHDOG_TIMEOUT)
-		return;
-
-	/*
-	 * Ensure we wait until the watchdog timer
-	 * running on a different CPU finishes
-	 */
-	timer_shutdown_sync(&cd->watchdog_timer);
-	cancel_work_sync(&cd->watchdog_work);
-}
-
-static void cyttsp4_watchdog_timer(struct timer_list *t)
-{
-	struct cyttsp4 *cd = from_timer(cd, t, watchdog_timer);
-
-	dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
-
-	schedule_work(&cd->watchdog_work);
-
-	return;
-}
-
-static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr,
-		int timeout_ms)
-{
-	int t = msecs_to_jiffies(timeout_ms);
-	bool with_timeout = (timeout_ms != 0);
-
-	mutex_lock(&cd->system_lock);
-	if (!cd->exclusive_dev && cd->exclusive_waits == 0) {
-		cd->exclusive_dev = ownptr;
-		goto exit;
-	}
-
-	cd->exclusive_waits++;
-wait:
-	mutex_unlock(&cd->system_lock);
-	if (with_timeout) {
-		t = wait_event_timeout(cd->wait_q, !cd->exclusive_dev, t);
-		if (IS_TMO(t)) {
-			dev_err(cd->dev, "%s: tmo waiting exclusive access\n",
-				__func__);
-			mutex_lock(&cd->system_lock);
-			cd->exclusive_waits--;
-			mutex_unlock(&cd->system_lock);
-			return -ETIME;
-		}
-	} else {
-		wait_event(cd->wait_q, !cd->exclusive_dev);
-	}
-	mutex_lock(&cd->system_lock);
-	if (cd->exclusive_dev)
-		goto wait;
-	cd->exclusive_dev = ownptr;
-	cd->exclusive_waits--;
-exit:
-	mutex_unlock(&cd->system_lock);
-
-	return 0;
-}
-
-/*
- * returns error if was not owned
- */
-static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr)
-{
-	mutex_lock(&cd->system_lock);
-	if (cd->exclusive_dev != ownptr) {
-		mutex_unlock(&cd->system_lock);
-		return -EINVAL;
-	}
-
-	dev_vdbg(cd->dev, "%s: exclusive_dev %p freed\n",
-		__func__, cd->exclusive_dev);
-	cd->exclusive_dev = NULL;
-	wake_up(&cd->wait_q);
-	mutex_unlock(&cd->system_lock);
-	return 0;
-}
-
-static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd)
-{
-	long t;
-	int rc = 0;
-
-	/* wait heartbeat */
-	dev_vdbg(cd->dev, "%s: wait heartbeat...\n", __func__);
-	t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_BOOTLOADER,
-			msecs_to_jiffies(CY_CORE_RESET_AND_WAIT_TIMEOUT));
-	if (IS_TMO(t)) {
-		dev_err(cd->dev, "%s: tmo waiting bl heartbeat cd->mode=%d\n",
-			__func__, cd->mode);
-		rc = -ETIME;
-	}
-
-	return rc;
-}
-
-static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd)
-{
-	long t;
-
-	dev_vdbg(cd->dev, "%s: wait sysinfo...\n", __func__);
-
-	t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_SYSINFO,
-			msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
-	if (IS_TMO(t)) {
-		dev_err(cd->dev, "%s: tmo waiting exit bl cd->mode=%d\n",
-			__func__, cd->mode);
-		mutex_lock(&cd->system_lock);
-		cd->int_status &= ~CY_INT_MODE_CHANGE;
-		mutex_unlock(&cd->system_lock);
-		return -ETIME;
-	}
-
-	return 0;
-}
-
-static int cyttsp4_reset_and_wait(struct cyttsp4 *cd)
-{
-	int rc;
-
-	/* reset hardware */
-	mutex_lock(&cd->system_lock);
-	dev_dbg(cd->dev, "%s: reset hw...\n", __func__);
-	rc = cyttsp4_hw_reset(cd);
-	cd->mode = CY_MODE_UNKNOWN;
-	mutex_unlock(&cd->system_lock);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s:Fail hw reset r=%d\n", __func__, rc);
-		return rc;
-	}
-
-	return cyttsp4_wait_bl_heartbeat(cd);
-}
-
-/*
- * returns err if refused or timeout; block until mode change complete
- * bit is set (mode change interrupt)
- */
-static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode)
-{
-	u8 new_dev_mode;
-	u8 mode;
-	long t;
-	int rc;
-
-	switch (new_mode) {
-	case CY_MODE_OPERATIONAL:
-		new_dev_mode = CY_HST_OPERATE;
-		break;
-	case CY_MODE_SYSINFO:
-		new_dev_mode = CY_HST_SYSINFO;
-		break;
-	case CY_MODE_CAT:
-		new_dev_mode = CY_HST_CAT;
-		break;
-	default:
-		dev_err(cd->dev, "%s: invalid mode: %02X(%d)\n",
-			__func__, new_mode, new_mode);
-		return -EINVAL;
-	}
-
-	/* change mode */
-	dev_dbg(cd->dev, "%s: %s=%p new_dev_mode=%02X new_mode=%d\n",
-			__func__, "have exclusive", cd->exclusive_dev,
-			new_dev_mode, new_mode);
-
-	mutex_lock(&cd->system_lock);
-	rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
-	if (rc < 0) {
-		mutex_unlock(&cd->system_lock);
-		dev_err(cd->dev, "%s: Fail read mode r=%d\n",
-			__func__, rc);
-		goto exit;
-	}
-
-	/* Clear device mode bits and set to new mode */
-	mode &= ~CY_HST_MODE;
-	mode |= new_dev_mode | CY_HST_MODE_CHANGE;
-
-	cd->int_status |= CY_INT_MODE_CHANGE;
-	rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode), &mode);
-	mutex_unlock(&cd->system_lock);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: Fail write mode change r=%d\n",
-				__func__, rc);
-		goto exit;
-	}
-
-	/* wait for mode change done interrupt */
-	t = wait_event_timeout(cd->wait_q,
-			(cd->int_status & CY_INT_MODE_CHANGE) == 0,
-			msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
-	dev_dbg(cd->dev, "%s: back from wait t=%ld cd->mode=%d\n",
-			__func__, t, cd->mode);
-
-	if (IS_TMO(t)) {
-		dev_err(cd->dev, "%s: %s\n", __func__,
-				"tmo waiting mode change");
-		mutex_lock(&cd->system_lock);
-		cd->int_status &= ~CY_INT_MODE_CHANGE;
-		mutex_unlock(&cd->system_lock);
-		rc = -EINVAL;
-	}
-
-exit:
-	return rc;
-}
-
-static void cyttsp4_watchdog_work(struct work_struct *work)
-{
-	struct cyttsp4 *cd =
-		container_of(work, struct cyttsp4, watchdog_work);
-	u8 *mode;
-	int retval;
-
-	mutex_lock(&cd->system_lock);
-	retval = cyttsp4_load_status_regs(cd);
-	if (retval < 0) {
-		dev_err(cd->dev,
-			"%s: failed to access device in watchdog timer r=%d\n",
-			__func__, retval);
-		cyttsp4_queue_startup_(cd);
-		goto cyttsp4_timer_watchdog_exit_error;
-	}
-	mode = &cd->sysinfo.xy_mode[CY_REG_BASE];
-	if (IS_BOOTLOADER(mode[0], mode[1])) {
-		dev_err(cd->dev,
-			"%s: device found in bootloader mode when operational mode\n",
-			__func__);
-		cyttsp4_queue_startup_(cd);
-		goto cyttsp4_timer_watchdog_exit_error;
-	}
-
-	cyttsp4_start_wd_timer(cd);
-cyttsp4_timer_watchdog_exit_error:
-	mutex_unlock(&cd->system_lock);
-	return;
-}
-
-static int cyttsp4_core_sleep_(struct cyttsp4 *cd)
-{
-	enum cyttsp4_sleep_state ss = SS_SLEEP_ON;
-	enum cyttsp4_int_state int_status = CY_INT_IGNORE;
-	int rc = 0;
-	u8 mode[2];
-
-	/* Already in sleep mode? */
-	mutex_lock(&cd->system_lock);
-	if (cd->sleep_state == SS_SLEEP_ON) {
-		mutex_unlock(&cd->system_lock);
-		return 0;
-	}
-	cd->sleep_state = SS_SLEEPING;
-	mutex_unlock(&cd->system_lock);
-
-	cyttsp4_stop_wd_timer(cd);
-
-	/* Wait until currently running IRQ handler exits and disable IRQ */
-	disable_irq(cd->irq);
-
-	dev_vdbg(cd->dev, "%s: write DEEP SLEEP...\n", __func__);
-	mutex_lock(&cd->system_lock);
-	rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
-	if (rc) {
-		mutex_unlock(&cd->system_lock);
-		dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
-		goto error;
-	}
-
-	if (IS_BOOTLOADER(mode[0], mode[1])) {
-		mutex_unlock(&cd->system_lock);
-		dev_err(cd->dev, "%s: Device in BOOTLOADER mode.\n", __func__);
-		rc = -EINVAL;
-		goto error;
-	}
-
-	mode[0] |= CY_HST_SLEEP;
-	rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode[0]), &mode[0]);
-	mutex_unlock(&cd->system_lock);
-	if (rc) {
-		dev_err(cd->dev, "%s: Fail write adapter r=%d\n", __func__, rc);
-		goto error;
-	}
-	dev_vdbg(cd->dev, "%s: write DEEP SLEEP succeeded\n", __func__);
-
-	if (cd->cpdata->power) {
-		dev_dbg(cd->dev, "%s: Power down HW\n", __func__);
-		rc = cd->cpdata->power(cd->cpdata, 0, cd->dev, &cd->ignore_irq);
-	} else {
-		dev_dbg(cd->dev, "%s: No power function\n", __func__);
-		rc = 0;
-	}
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: HW Power down fails r=%d\n",
-				__func__, rc);
-		goto error;
-	}
-
-	/* Give time to FW to sleep */
-	msleep(50);
-
-	goto exit;
-
-error:
-	ss = SS_SLEEP_OFF;
-	int_status = CY_INT_NONE;
-	cyttsp4_start_wd_timer(cd);
-
-exit:
-	mutex_lock(&cd->system_lock);
-	cd->sleep_state = ss;
-	cd->int_status |= int_status;
-	mutex_unlock(&cd->system_lock);
-	enable_irq(cd->irq);
-	return rc;
-}
-
-static int cyttsp4_startup_(struct cyttsp4 *cd)
-{
-	int retry = CY_CORE_STARTUP_RETRY_COUNT;
-	int rc;
-
-	cyttsp4_stop_wd_timer(cd);
-
-reset:
-	if (retry != CY_CORE_STARTUP_RETRY_COUNT)
-		dev_dbg(cd->dev, "%s: Retry %d\n", __func__,
-			CY_CORE_STARTUP_RETRY_COUNT - retry);
-
-	/* reset hardware and wait for heartbeat */
-	rc = cyttsp4_reset_and_wait(cd);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: Error on h/w reset r=%d\n", __func__, rc);
-		if (retry--)
-			goto reset;
-		goto exit;
-	}
-
-	/* exit bl into sysinfo mode */
-	dev_vdbg(cd->dev, "%s: write exit ldr...\n", __func__);
-	mutex_lock(&cd->system_lock);
-	cd->int_status &= ~CY_INT_IGNORE;
-	cd->int_status |= CY_INT_MODE_CHANGE;
-
-	rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(ldr_exit),
-			(u8 *)ldr_exit);
-	mutex_unlock(&cd->system_lock);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: Fail write r=%d\n", __func__, rc);
-		if (retry--)
-			goto reset;
-		goto exit;
-	}
-
-	rc = cyttsp4_wait_sysinfo_mode(cd);
-	if (rc < 0) {
-		u8 buf[sizeof(ldr_err_app)];
-		int rc1;
-
-		/* Check for invalid/corrupted touch application */
-		rc1 = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(ldr_err_app),
-				buf);
-		if (rc1) {
-			dev_err(cd->dev, "%s: Fail read r=%d\n", __func__, rc1);
-		} else if (!memcmp(buf, ldr_err_app, sizeof(ldr_err_app))) {
-			dev_err(cd->dev, "%s: Error launching touch application\n",
-				__func__);
-			mutex_lock(&cd->system_lock);
-			cd->invalid_touch_app = true;
-			mutex_unlock(&cd->system_lock);
-			goto exit_no_wd;
-		}
-
-		if (retry--)
-			goto reset;
-		goto exit;
-	}
-
-	mutex_lock(&cd->system_lock);
-	cd->invalid_touch_app = false;
-	mutex_unlock(&cd->system_lock);
-
-	/* read sysinfo data */
-	dev_vdbg(cd->dev, "%s: get sysinfo regs..\n", __func__);
-	rc = cyttsp4_get_sysinfo_regs(cd);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: failed to get sysinfo regs rc=%d\n",
-			__func__, rc);
-		if (retry--)
-			goto reset;
-		goto exit;
-	}
-
-	rc = cyttsp4_set_mode(cd, CY_MODE_OPERATIONAL);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: failed to set mode to operational rc=%d\n",
-			__func__, rc);
-		if (retry--)
-			goto reset;
-		goto exit;
-	}
-
-	cyttsp4_lift_all(&cd->md);
-
-	/* restore to sleep if was suspended */
-	mutex_lock(&cd->system_lock);
-	if (cd->sleep_state == SS_SLEEP_ON) {
-		cd->sleep_state = SS_SLEEP_OFF;
-		mutex_unlock(&cd->system_lock);
-		cyttsp4_core_sleep_(cd);
-		goto exit_no_wd;
-	}
-	mutex_unlock(&cd->system_lock);
-
-exit:
-	cyttsp4_start_wd_timer(cd);
-exit_no_wd:
-	return rc;
-}
-
-static int cyttsp4_startup(struct cyttsp4 *cd)
-{
-	int rc;
-
-	mutex_lock(&cd->system_lock);
-	cd->startup_state = STARTUP_RUNNING;
-	mutex_unlock(&cd->system_lock);
-
-	rc = cyttsp4_request_exclusive(cd, cd->dev,
-			CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
-				__func__, cd->exclusive_dev, cd->dev);
-		goto exit;
-	}
-
-	rc = cyttsp4_startup_(cd);
-
-	if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
-		/* Don't return fail code, mode is already changed. */
-		dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
-	else
-		dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
-
-exit:
-	mutex_lock(&cd->system_lock);
-	cd->startup_state = STARTUP_NONE;
-	mutex_unlock(&cd->system_lock);
-
-	/* Wake the waiters for end of startup */
-	wake_up(&cd->wait_q);
-
-	return rc;
-}
-
-static void cyttsp4_startup_work_function(struct work_struct *work)
-{
-	struct cyttsp4 *cd =  container_of(work, struct cyttsp4, startup_work);
-	int rc;
-
-	rc = cyttsp4_startup(cd);
-	if (rc < 0)
-		dev_err(cd->dev, "%s: Fail queued startup r=%d\n",
-			__func__, rc);
-}
-
-static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
-{
-	struct cyttsp4_sysinfo *si = &cd->sysinfo;
-
-	if (!si)
-		return;
-
-	kfree(si->si_ptrs.cydata);
-	kfree(si->si_ptrs.test);
-	kfree(si->si_ptrs.pcfg);
-	kfree(si->si_ptrs.opcfg);
-	kfree(si->si_ptrs.ddata);
-	kfree(si->si_ptrs.mdata);
-	kfree(si->btn);
-	kfree(si->xy_mode);
-	kfree(si->xy_data);
-	kfree(si->btn_rec_data);
-}
-
-static int cyttsp4_core_sleep(struct cyttsp4 *cd)
-{
-	int rc;
-
-	rc = cyttsp4_request_exclusive(cd, cd->dev,
-			CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
-				__func__, cd->exclusive_dev, cd->dev);
-		return 0;
-	}
-
-	rc = cyttsp4_core_sleep_(cd);
-
-	if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
-		dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
-	else
-		dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
-
-	return rc;
-}
-
-static int cyttsp4_core_wake_(struct cyttsp4 *cd)
-{
-	struct device *dev = cd->dev;
-	int rc;
-	u8 mode;
-	int t;
-
-	/* Already woken? */
-	mutex_lock(&cd->system_lock);
-	if (cd->sleep_state == SS_SLEEP_OFF) {
-		mutex_unlock(&cd->system_lock);
-		return 0;
-	}
-	cd->int_status &= ~CY_INT_IGNORE;
-	cd->int_status |= CY_INT_AWAKE;
-	cd->sleep_state = SS_WAKING;
-
-	if (cd->cpdata->power) {
-		dev_dbg(dev, "%s: Power up HW\n", __func__);
-		rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
-	} else {
-		dev_dbg(dev, "%s: No power function\n", __func__);
-		rc = -ENOSYS;
-	}
-	if (rc < 0) {
-		dev_err(dev, "%s: HW Power up fails r=%d\n",
-				__func__, rc);
-
-		/* Initiate a read transaction to wake up */
-		cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
-	} else
-		dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
-			__func__);
-	mutex_unlock(&cd->system_lock);
-
-	t = wait_event_timeout(cd->wait_q,
-			(cd->int_status & CY_INT_AWAKE) == 0,
-			msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
-	if (IS_TMO(t)) {
-		dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
-		mutex_lock(&cd->system_lock);
-		cd->int_status &= ~CY_INT_AWAKE;
-		/* Try starting up */
-		cyttsp4_queue_startup_(cd);
-		mutex_unlock(&cd->system_lock);
-	}
-
-	mutex_lock(&cd->system_lock);
-	cd->sleep_state = SS_SLEEP_OFF;
-	mutex_unlock(&cd->system_lock);
-
-	cyttsp4_start_wd_timer(cd);
-
-	return 0;
-}
-
-static int cyttsp4_core_wake(struct cyttsp4 *cd)
-{
-	int rc;
-
-	rc = cyttsp4_request_exclusive(cd, cd->dev,
-			CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
-	if (rc < 0) {
-		dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
-				__func__, cd->exclusive_dev, cd->dev);
-		return 0;
-	}
-
-	rc = cyttsp4_core_wake_(cd);
-
-	if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
-		dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
-	else
-		dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
-
-	return rc;
-}
-
-static int cyttsp4_core_suspend(struct device *dev)
-{
-	struct cyttsp4 *cd = dev_get_drvdata(dev);
-	struct cyttsp4_mt_data *md = &cd->md;
-	int rc;
-
-	md->is_suspended = true;
-
-	rc = cyttsp4_core_sleep(cd);
-	if (rc < 0) {
-		dev_err(dev, "%s: Error on sleep\n", __func__);
-		return -EAGAIN;
-	}
-	return 0;
-}
-
-static int cyttsp4_core_resume(struct device *dev)
-{
-	struct cyttsp4 *cd = dev_get_drvdata(dev);
-	struct cyttsp4_mt_data *md = &cd->md;
-	int rc;
-
-	md->is_suspended = false;
-
-	rc = cyttsp4_core_wake(cd);
-	if (rc < 0) {
-		dev_err(dev, "%s: Error on wake\n", __func__);
-		return -EAGAIN;
-	}
-
-	return 0;
-}
-
-EXPORT_GPL_RUNTIME_DEV_PM_OPS(cyttsp4_pm_ops,
-			      cyttsp4_core_suspend, cyttsp4_core_resume, NULL);
-
-static int cyttsp4_mt_open(struct input_dev *input)
-{
-	pm_runtime_get(input->dev.parent);
-	return 0;
-}
-
-static void cyttsp4_mt_close(struct input_dev *input)
-{
-	struct cyttsp4_mt_data *md = input_get_drvdata(input);
-	mutex_lock(&md->report_lock);
-	if (!md->is_suspended)
-		pm_runtime_put(input->dev.parent);
-	mutex_unlock(&md->report_lock);
-}
-
-
-static int cyttsp4_setup_input_device(struct cyttsp4 *cd)
-{
-	struct device *dev = cd->dev;
-	struct cyttsp4_mt_data *md = &cd->md;
-	int signal = CY_IGNORE_VALUE;
-	int max_x, max_y, max_p, min, max;
-	int max_x_tmp, max_y_tmp;
-	int i;
-	int rc;
-
-	dev_vdbg(dev, "%s: Initialize event signals\n", __func__);
-	__set_bit(EV_ABS, md->input->evbit);
-	__set_bit(EV_REL, md->input->evbit);
-	__set_bit(EV_KEY, md->input->evbit);
-
-	max_x_tmp = md->si->si_ofs.max_x;
-	max_y_tmp = md->si->si_ofs.max_y;
-
-	/* get maximum values from the sysinfo data */
-	if (md->pdata->flags & CY_FLAG_FLIP) {
-		max_x = max_y_tmp - 1;
-		max_y = max_x_tmp - 1;
-	} else {
-		max_x = max_x_tmp - 1;
-		max_y = max_y_tmp - 1;
-	}
-	max_p = md->si->si_ofs.max_p;
-
-	/* set event signal capabilities */
-	for (i = 0; i < (md->pdata->frmwrk->size / CY_NUM_ABS_SET); i++) {
-		signal = md->pdata->frmwrk->abs
-			[(i * CY_NUM_ABS_SET) + CY_SIGNAL_OST];
-		if (signal != CY_IGNORE_VALUE) {
-			__set_bit(signal, md->input->absbit);
-			min = md->pdata->frmwrk->abs
-				[(i * CY_NUM_ABS_SET) + CY_MIN_OST];
-			max = md->pdata->frmwrk->abs
-				[(i * CY_NUM_ABS_SET) + CY_MAX_OST];
-			if (i == CY_ABS_ID_OST) {
-				/* shift track ids down to start at 0 */
-				max = max - min;
-				min = min - min;
-			} else if (i == CY_ABS_X_OST)
-				max = max_x;
-			else if (i == CY_ABS_Y_OST)
-				max = max_y;
-			else if (i == CY_ABS_P_OST)
-				max = max_p;
-			input_set_abs_params(md->input, signal, min, max,
-				md->pdata->frmwrk->abs
-				[(i * CY_NUM_ABS_SET) + CY_FUZZ_OST],
-				md->pdata->frmwrk->abs
-				[(i * CY_NUM_ABS_SET) + CY_FLAT_OST]);
-			dev_dbg(dev, "%s: register signal=%02X min=%d max=%d\n",
-				__func__, signal, min, max);
-			if ((i == CY_ABS_ID_OST) &&
-				(md->si->si_ofs.tch_rec_size <
-				CY_TMA4XX_TCH_REC_SIZE))
-				break;
-		}
-	}
-
-	input_mt_init_slots(md->input, md->si->si_ofs.tch_abs[CY_TCH_T].max,
-			INPUT_MT_DIRECT);
-	rc = input_register_device(md->input);
-	if (rc < 0)
-		dev_err(dev, "%s: Error, failed register input device r=%d\n",
-			__func__, rc);
-	return rc;
-}
-
-static int cyttsp4_mt_probe(struct cyttsp4 *cd)
-{
-	struct device *dev = cd->dev;
-	struct cyttsp4_mt_data *md = &cd->md;
-	struct cyttsp4_mt_platform_data *pdata = cd->pdata->mt_pdata;
-	int rc = 0;
-
-	mutex_init(&md->report_lock);
-	md->pdata = pdata;
-	/* Create the input device and register it. */
-	dev_vdbg(dev, "%s: Create the input device and register it\n",
-		__func__);
-	md->input = input_allocate_device();
-	if (md->input == NULL) {
-		dev_err(dev, "%s: Error, failed to allocate input device\n",
-			__func__);
-		rc = -ENOSYS;
-		goto error_alloc_failed;
-	}
-
-	md->input->name = pdata->inp_dev_name;
-	scnprintf(md->phys, sizeof(md->phys)-1, "%s", dev_name(dev));
-	md->input->phys = md->phys;
-	md->input->id.bustype = cd->bus_ops->bustype;
-	md->input->dev.parent = dev;
-	md->input->open = cyttsp4_mt_open;
-	md->input->close = cyttsp4_mt_close;
-	input_set_drvdata(md->input, md);
-
-	/* get sysinfo */
-	md->si = &cd->sysinfo;
-
-	rc = cyttsp4_setup_input_device(cd);
-	if (rc)
-		goto error_init_input;
-
-	return 0;
-
-error_init_input:
-	input_free_device(md->input);
-error_alloc_failed:
-	dev_err(dev, "%s failed.\n", __func__);
-	return rc;
-}
-
-struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
-		struct device *dev, u16 irq, size_t xfer_buf_size)
-{
-	struct cyttsp4 *cd;
-	struct cyttsp4_platform_data *pdata = dev_get_platdata(dev);
-	unsigned long irq_flags;
-	int rc = 0;
-
-	if (!pdata || !pdata->core_pdata || !pdata->mt_pdata) {
-		dev_err(dev, "%s: Missing platform data\n", __func__);
-		rc = -ENODEV;
-		goto error_no_pdata;
-	}
-
-	cd = kzalloc(sizeof(*cd), GFP_KERNEL);
-	if (!cd) {
-		dev_err(dev, "%s: Error, kzalloc\n", __func__);
-		rc = -ENOMEM;
-		goto error_alloc_data;
-	}
-
-	cd->xfer_buf = kzalloc(xfer_buf_size, GFP_KERNEL);
-	if (!cd->xfer_buf) {
-		dev_err(dev, "%s: Error, kzalloc\n", __func__);
-		rc = -ENOMEM;
-		goto error_free_cd;
-	}
-
-	/* Initialize device info */
-	cd->dev = dev;
-	cd->pdata = pdata;
-	cd->cpdata = pdata->core_pdata;
-	cd->bus_ops = ops;
-
-	/* Initialize mutexes and spinlocks */
-	mutex_init(&cd->system_lock);
-	mutex_init(&cd->adap_lock);
-
-	/* Initialize wait queue */
-	init_waitqueue_head(&cd->wait_q);
-
-	/* Initialize works */
-	INIT_WORK(&cd->startup_work, cyttsp4_startup_work_function);
-	INIT_WORK(&cd->watchdog_work, cyttsp4_watchdog_work);
-
-	/* Initialize IRQ */
-	cd->irq = gpio_to_irq(cd->cpdata->irq_gpio);
-	if (cd->irq < 0) {
-		rc = -EINVAL;
-		goto error_free_xfer;
-	}
-
-	dev_set_drvdata(dev, cd);
-
-	/* Call platform init function */
-	if (cd->cpdata->init) {
-		dev_dbg(cd->dev, "%s: Init HW\n", __func__);
-		rc = cd->cpdata->init(cd->cpdata, 1, cd->dev);
-	} else {
-		dev_dbg(cd->dev, "%s: No HW INIT function\n", __func__);
-		rc = 0;
-	}
-	if (rc < 0)
-		dev_err(cd->dev, "%s: HW Init fail r=%d\n", __func__, rc);
-
-	dev_dbg(dev, "%s: initialize threaded irq=%d\n", __func__, cd->irq);
-	if (cd->cpdata->level_irq_udelay > 0)
-		/* use level triggered interrupts */
-		irq_flags = IRQF_TRIGGER_LOW | IRQF_ONESHOT;
-	else
-		/* use edge triggered interrupts */
-		irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
-
-	rc = request_threaded_irq(cd->irq, NULL, cyttsp4_irq, irq_flags,
-		dev_name(dev), cd);
-	if (rc < 0) {
-		dev_err(dev, "%s: Error, could not request irq\n", __func__);
-		goto error_request_irq;
-	}
-
-	/* Setup watchdog timer */
-	timer_setup(&cd->watchdog_timer, cyttsp4_watchdog_timer, 0);
-
-	/*
-	 * call startup directly to ensure that the device
-	 * is tested before leaving the probe
-	 */
-	rc = cyttsp4_startup(cd);
-
-	/* Do not fail probe if startup fails but the device is detected */
-	if (rc < 0 && cd->mode == CY_MODE_UNKNOWN) {
-		dev_err(cd->dev, "%s: Fail initial startup r=%d\n",
-			__func__, rc);
-		goto error_startup;
-	}
-
-	rc = cyttsp4_mt_probe(cd);
-	if (rc < 0) {
-		dev_err(dev, "%s: Error, fail mt probe\n", __func__);
-		goto error_startup;
-	}
-
-	pm_runtime_enable(dev);
-
-	return cd;
-
-error_startup:
-	cancel_work_sync(&cd->startup_work);
-	cyttsp4_stop_wd_timer(cd);
-	pm_runtime_disable(dev);
-	cyttsp4_free_si_ptrs(cd);
-	free_irq(cd->irq, cd);
-error_request_irq:
-	if (cd->cpdata->init)
-		cd->cpdata->init(cd->cpdata, 0, dev);
-error_free_xfer:
-	kfree(cd->xfer_buf);
-error_free_cd:
-	kfree(cd);
-error_alloc_data:
-error_no_pdata:
-	dev_err(dev, "%s failed.\n", __func__);
-	return ERR_PTR(rc);
-}
-EXPORT_SYMBOL_GPL(cyttsp4_probe);
-
-static void cyttsp4_mt_release(struct cyttsp4_mt_data *md)
-{
-	input_unregister_device(md->input);
-	input_set_drvdata(md->input, NULL);
-}
-
-int cyttsp4_remove(struct cyttsp4 *cd)
-{
-	struct device *dev = cd->dev;
-
-	cyttsp4_mt_release(&cd->md);
-
-	/*
-	 * Suspend the device before freeing the startup_work and stopping
-	 * the watchdog since sleep function restarts watchdog on failure
-	 */
-	pm_runtime_suspend(dev);
-	pm_runtime_disable(dev);
-
-	cancel_work_sync(&cd->startup_work);
-
-	cyttsp4_stop_wd_timer(cd);
-
-	free_irq(cd->irq, cd);
-	if (cd->cpdata->init)
-		cd->cpdata->init(cd->cpdata, 0, dev);
-	cyttsp4_free_si_ptrs(cd);
-	kfree(cd);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(cyttsp4_remove);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen core driver");
-MODULE_AUTHOR("Cypress");

drivers/input/touchscreen/cyttsp4_core.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * cyttsp4_core.h
- * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
- * For use with Cypress Txx4xx parts.
- * Supported parts include:
- * TMA4XX
- * TMA1036
- *
- * Copyright (C) 2012 Cypress Semiconductor
- *
- * Contact Cypress Semiconductor at www.cypress.com <[e-mail]>
- */
-
-#ifndef _LINUX_CYTTSP4_CORE_H
-#define _LINUX_CYTTSP4_CORE_H
-
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/input.h>
-#include <linux/kernel.h>
-#include <linux/limits.h>
-#include <linux/module.h>
-#include <linux/stringify.h>
-#include <linux/types.h>
-#include <linux/platform_data/cyttsp4.h>
-
-#define CY_REG_BASE			0x00
-
-#define CY_POST_CODEL_WDG_RST		0x01
-#define CY_POST_CODEL_CFG_DATA_CRC_FAIL	0x02
-#define CY_POST_CODEL_PANEL_TEST_FAIL	0x04
-
-#define CY_NUM_BTN_PER_REG		4
-
-/* touch record system information offset masks and shifts */
-#define CY_BYTE_OFS_MASK		0x1F
-#define CY_BOFS_MASK			0xE0
-#define CY_BOFS_SHIFT			5
-
-#define CY_TMA1036_TCH_REC_SIZE		6
-#define CY_TMA4XX_TCH_REC_SIZE		9
-#define CY_TMA1036_MAX_TCH		0x0E
-#define CY_TMA4XX_MAX_TCH		0x1E
-
-#define CY_NORMAL_ORIGIN		0	/* upper, left corner */
-#define CY_INVERT_ORIGIN		1	/* lower, right corner */
-
-/* helpers */
-#define GET_NUM_TOUCHES(x)		((x) & 0x1F)
-#define IS_LARGE_AREA(x)		((x) & 0x20)
-#define IS_BAD_PKT(x)			((x) & 0x20)
-#define IS_BOOTLOADER(hst_mode, reset_detect)	\
-		((hst_mode) & 0x01 || (reset_detect) != 0)
-#define IS_TMO(t)			((t) == 0)
-
-
-enum cyttsp_cmd_bits {
-	CY_CMD_COMPLETE = (1 << 6),
-};
-
-/* Timeout in ms. */
-#define CY_WATCHDOG_TIMEOUT		1000
-
-#define CY_MAX_PRINT_SIZE		512
-#ifdef VERBOSE_DEBUG
-#define CY_MAX_PRBUF_SIZE		PIPE_BUF
-#define CY_PR_TRUNCATED			" truncated..."
-#endif
-
-enum cyttsp4_ic_grpnum {
-	CY_IC_GRPNUM_RESERVED,
-	CY_IC_GRPNUM_CMD_REGS,
-	CY_IC_GRPNUM_TCH_REP,
-	CY_IC_GRPNUM_DATA_REC,
-	CY_IC_GRPNUM_TEST_REC,
-	CY_IC_GRPNUM_PCFG_REC,
-	CY_IC_GRPNUM_TCH_PARM_VAL,
-	CY_IC_GRPNUM_TCH_PARM_SIZE,
-	CY_IC_GRPNUM_RESERVED1,
-	CY_IC_GRPNUM_RESERVED2,
-	CY_IC_GRPNUM_OPCFG_REC,
-	CY_IC_GRPNUM_DDATA_REC,
-	CY_IC_GRPNUM_MDATA_REC,
-	CY_IC_GRPNUM_TEST_REGS,
-	CY_IC_GRPNUM_BTN_KEYS,
-	CY_IC_GRPNUM_TTHE_REGS,
-	CY_IC_GRPNUM_NUM
-};
-
-enum cyttsp4_int_state {
-	CY_INT_NONE,
-	CY_INT_IGNORE      = (1 << 0),
-	CY_INT_MODE_CHANGE = (1 << 1),
-	CY_INT_EXEC_CMD    = (1 << 2),
-	CY_INT_AWAKE       = (1 << 3),
-};
-
-enum cyttsp4_mode {
-	CY_MODE_UNKNOWN,
-	CY_MODE_BOOTLOADER   = (1 << 1),
-	CY_MODE_OPERATIONAL  = (1 << 2),
-	CY_MODE_SYSINFO      = (1 << 3),
-	CY_MODE_CAT          = (1 << 4),
-	CY_MODE_STARTUP      = (1 << 5),
-	CY_MODE_LOADER       = (1 << 6),
-	CY_MODE_CHANGE_MODE  = (1 << 7),
-	CY_MODE_CHANGED      = (1 << 8),
-	CY_MODE_CMD_COMPLETE = (1 << 9),
-};
-
-enum cyttsp4_sleep_state {
-	SS_SLEEP_OFF,
-	SS_SLEEP_ON,
-	SS_SLEEPING,
-	SS_WAKING,
-};
-
-enum cyttsp4_startup_state {
-	STARTUP_NONE,
-	STARTUP_QUEUED,
-	STARTUP_RUNNING,
-};
-
-#define CY_NUM_REVCTRL			8
-struct cyttsp4_cydata {
-	u8 ttpidh;
-	u8 ttpidl;
-	u8 fw_ver_major;
-	u8 fw_ver_minor;
-	u8 revctrl[CY_NUM_REVCTRL];
-	u8 blver_major;
-	u8 blver_minor;
-	u8 jtag_si_id3;
-	u8 jtag_si_id2;
-	u8 jtag_si_id1;
-	u8 jtag_si_id0;
-	u8 mfgid_sz;
-	u8 cyito_idh;
-	u8 cyito_idl;
-	u8 cyito_verh;
-	u8 cyito_verl;
-	u8 ttsp_ver_major;
-	u8 ttsp_ver_minor;
-	u8 device_info;
-	u8 mfg_id[];
-} __packed;
-
-struct cyttsp4_test {
-	u8 post_codeh;
-	u8 post_codel;
-} __packed;
-
-struct cyttsp4_pcfg {
-	u8 electrodes_x;
-	u8 electrodes_y;
-	u8 len_xh;
-	u8 len_xl;
-	u8 len_yh;
-	u8 len_yl;
-	u8 res_xh;
-	u8 res_xl;
-	u8 res_yh;
-	u8 res_yl;
-	u8 max_zh;
-	u8 max_zl;
-	u8 panel_info0;
-} __packed;
-
-struct cyttsp4_tch_rec_params {
-	u8 loc;
-	u8 size;
-} __packed;
-
-#define CY_NUM_TCH_FIELDS		7
-#define CY_NUM_EXT_TCH_FIELDS		3
-struct cyttsp4_opcfg {
-	u8 cmd_ofs;
-	u8 rep_ofs;
-	u8 rep_szh;
-	u8 rep_szl;
-	u8 num_btns;
-	u8 tt_stat_ofs;
-	u8 obj_cfg0;
-	u8 max_tchs;
-	u8 tch_rec_size;
-	struct cyttsp4_tch_rec_params tch_rec_old[CY_NUM_TCH_FIELDS];
-	u8 btn_rec_size;	/* btn record size (in bytes) */
-	u8 btn_diff_ofs;	/* btn data loc, diff counts  */
-	u8 btn_diff_size;	/* btn size of diff counts (in bits) */
-	struct cyttsp4_tch_rec_params tch_rec_new[CY_NUM_EXT_TCH_FIELDS];
-} __packed;
-
-struct cyttsp4_sysinfo_ptr {
-	struct cyttsp4_cydata *cydata;
-	struct cyttsp4_test *test;
-	struct cyttsp4_pcfg *pcfg;
-	struct cyttsp4_opcfg *opcfg;
-	struct cyttsp4_ddata *ddata;
-	struct cyttsp4_mdata *mdata;
-} __packed;
-
-struct cyttsp4_sysinfo_data {
-	u8 hst_mode;
-	u8 reserved;
-	u8 map_szh;
-	u8 map_szl;
-	u8 cydata_ofsh;
-	u8 cydata_ofsl;
-	u8 test_ofsh;
-	u8 test_ofsl;
-	u8 pcfg_ofsh;
-	u8 pcfg_ofsl;
-	u8 opcfg_ofsh;
-	u8 opcfg_ofsl;
-	u8 ddata_ofsh;
-	u8 ddata_ofsl;
-	u8 mdata_ofsh;
-	u8 mdata_ofsl;
-} __packed;
-
-enum cyttsp4_tch_abs {	/* for ordering within the extracted touch data array */
-	CY_TCH_X,	/* X */
-	CY_TCH_Y,	/* Y */
-	CY_TCH_P,	/* P (Z) */
-	CY_TCH_T,	/* TOUCH ID */
-	CY_TCH_E,	/* EVENT ID */
-	CY_TCH_O,	/* OBJECT ID */
-	CY_TCH_W,	/* SIZE */
-	CY_TCH_MAJ,	/* TOUCH_MAJOR */
-	CY_TCH_MIN,	/* TOUCH_MINOR */
-	CY_TCH_OR,	/* ORIENTATION */
-	CY_TCH_NUM_ABS
-};
-
-struct cyttsp4_touch {
-	int abs[CY_TCH_NUM_ABS];
-};
-
-struct cyttsp4_tch_abs_params {
-	size_t ofs;	/* abs byte offset */
-	size_t size;	/* size in bits */
-	size_t max;	/* max value */
-	size_t bofs;	/* bit offset */
-};
-
-struct cyttsp4_sysinfo_ofs {
-	size_t chip_type;
-	size_t cmd_ofs;
-	size_t rep_ofs;
-	size_t rep_sz;
-	size_t num_btns;
-	size_t num_btn_regs;	/* ceil(num_btns/4) */
-	size_t tt_stat_ofs;
-	size_t tch_rec_size;
-	size_t obj_cfg0;
-	size_t max_tchs;
-	size_t mode_size;
-	size_t data_size;
-	size_t map_sz;
-	size_t max_x;
-	size_t x_origin;	/* left or right corner */
-	size_t max_y;
-	size_t y_origin;	/* upper or lower corner */
-	size_t max_p;
-	size_t cydata_ofs;
-	size_t test_ofs;
-	size_t pcfg_ofs;
-	size_t opcfg_ofs;
-	size_t ddata_ofs;
-	size_t mdata_ofs;
-	size_t cydata_size;
-	size_t test_size;
-	size_t pcfg_size;
-	size_t opcfg_size;
-	size_t ddata_size;
-	size_t mdata_size;
-	size_t btn_keys_size;
-	struct cyttsp4_tch_abs_params tch_abs[CY_TCH_NUM_ABS];
-	size_t btn_rec_size; /* btn record size (in bytes) */
-	size_t btn_diff_ofs;/* btn data loc ,diff counts, (Op-Mode byte ofs) */
-	size_t btn_diff_size;/* btn size of diff counts (in bits) */
-};
-
-enum cyttsp4_btn_state {
-	CY_BTN_RELEASED,
-	CY_BTN_PRESSED,
-	CY_BTN_NUM_STATE
-};
-
-struct cyttsp4_btn {
-	bool enabled;
-	int state;	/* CY_BTN_PRESSED, CY_BTN_RELEASED */
-	int key_code;
-};
-
-struct cyttsp4_sysinfo {
-	bool ready;
-	struct cyttsp4_sysinfo_data si_data;
-	struct cyttsp4_sysinfo_ptr si_ptrs;
-	struct cyttsp4_sysinfo_ofs si_ofs;
-	struct cyttsp4_btn *btn;	/* button states */
-	u8 *btn_rec_data;		/* button diff count data */
-	u8 *xy_mode;			/* operational mode and status regs */
-	u8 *xy_data;			/* operational touch regs */
-};
-
-struct cyttsp4_mt_data {
-	struct cyttsp4_mt_platform_data *pdata;
-	struct cyttsp4_sysinfo *si;
-	struct input_dev *input;
-	struct mutex report_lock;
-	bool is_suspended;
-	char phys[NAME_MAX];
-	int num_prv_tch;
-};
-
-struct cyttsp4 {
-	struct device *dev;
-	struct mutex system_lock;
-	struct mutex adap_lock;
-	enum cyttsp4_mode mode;
-	enum cyttsp4_sleep_state sleep_state;
-	enum cyttsp4_startup_state startup_state;
-	int int_status;
-	wait_queue_head_t wait_q;
-	int irq;
-	struct work_struct startup_work;
-	struct work_struct watchdog_work;
-	struct timer_list watchdog_timer;
-	struct cyttsp4_sysinfo sysinfo;
-	void *exclusive_dev;
-	int exclusive_waits;
-	atomic_t ignore_irq;
-	bool invalid_touch_app;
-	struct cyttsp4_mt_data md;
-	struct cyttsp4_platform_data *pdata;
-	struct cyttsp4_core_platform_data *cpdata;
-	const struct cyttsp4_bus_ops *bus_ops;
-	u8 *xfer_buf;
-#ifdef VERBOSE_DEBUG
-	u8 pr_buf[CY_MAX_PRBUF_SIZE];
-#endif
-};
-
-struct cyttsp4_bus_ops {
-	u16 bustype;
-	int (*write)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
-			const void *values);
-	int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
-			void *values);
-};
-
-enum cyttsp4_hst_mode_bits {
-	CY_HST_TOGGLE      = (1 << 7),
-	CY_HST_MODE_CHANGE = (1 << 3),
-	CY_HST_MODE        = (7 << 4),
-	CY_HST_OPERATE     = (0 << 4),
-	CY_HST_SYSINFO     = (1 << 4),
-	CY_HST_CAT         = (2 << 4),
-	CY_HST_LOWPOW      = (1 << 2),
-	CY_HST_SLEEP       = (1 << 1),
-	CY_HST_RESET       = (1 << 0),
-};
-
-/* abs settings */
-#define CY_IGNORE_VALUE			0xFFFF
-
-/* abs signal capabilities offsets in the frameworks array */
-enum cyttsp4_sig_caps {
-	CY_SIGNAL_OST,
-	CY_MIN_OST,
-	CY_MAX_OST,
-	CY_FUZZ_OST,
-	CY_FLAT_OST,
-	CY_NUM_ABS_SET	/* number of signal capability fields */
-};
-
-/* abs axis signal offsets in the framworks array  */
-enum cyttsp4_sig_ost {
-	CY_ABS_X_OST,
-	CY_ABS_Y_OST,
-	CY_ABS_P_OST,
-	CY_ABS_W_OST,
-	CY_ABS_ID_OST,
-	CY_ABS_MAJ_OST,
-	CY_ABS_MIN_OST,
-	CY_ABS_OR_OST,
-	CY_NUM_ABS_OST	/* number of abs signals */
-};
-
-enum cyttsp4_flags {
-	CY_FLAG_NONE = 0x00,
-	CY_FLAG_HOVER = 0x04,
-	CY_FLAG_FLIP = 0x08,
-	CY_FLAG_INV_X = 0x10,
-	CY_FLAG_INV_Y = 0x20,
-	CY_FLAG_VKEYS = 0x40,
-};
-
-enum cyttsp4_object_id {
-	CY_OBJ_STANDARD_FINGER,
-	CY_OBJ_LARGE_OBJECT,
-	CY_OBJ_STYLUS,
-	CY_OBJ_HOVER,
-};
-
-enum cyttsp4_event_id {
-	CY_EV_NO_EVENT,
-	CY_EV_TOUCHDOWN,
-	CY_EV_MOVE,		/* significant displacement (> act dist) */
-	CY_EV_LIFTOFF,		/* record reports last position */
-};
-
-/* x-axis resolution of panel in pixels */
-#define CY_PCFG_RESOLUTION_X_MASK	0x7F
-
-/* y-axis resolution of panel in pixels */
-#define CY_PCFG_RESOLUTION_Y_MASK	0x7F
-
-/* x-axis, 0:origin is on left side of panel, 1: right */
-#define CY_PCFG_ORIGIN_X_MASK		0x80
-
-/* y-axis, 0:origin is on top side of panel, 1: bottom */
-#define CY_PCFG_ORIGIN_Y_MASK		0x80
-
-static inline int cyttsp4_adap_read(struct cyttsp4 *ts, u16 addr, int size,
-		void *buf)
-{
-	return ts->bus_ops->read(ts->dev, ts->xfer_buf, addr, size, buf);
-}
-
-static inline int cyttsp4_adap_write(struct cyttsp4 *ts, u16 addr, int size,
-		const void *buf)
-{
-	return ts->bus_ops->write(ts->dev, ts->xfer_buf, addr, size, buf);
-}
-
-extern struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
-		struct device *dev, u16 irq, size_t xfer_buf_size);
-extern int cyttsp4_remove(struct cyttsp4 *ts);
-int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
-		u8 length, const void *values);
-int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
-		u8 length, void *values);
-extern const struct dev_pm_ops cyttsp4_pm_ops;
-
-#endif /* _LINUX_CYTTSP4_CORE_H */

drivers/input/touchscreen/cyttsp4_i2c.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * cyttsp_i2c.c
- * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
- * For use with Cypress  Txx4xx parts.
- * Supported parts include:
- * TMA4XX
- * TMA1036
- *
- * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
- * Copyright (C) 2012 Javier Martinez Canillas <[e-mail]>
- * Copyright (C) 2013 Cypress Semiconductor
- *
- * Contact Cypress Semiconductor at www.cypress.com <[e-mail]>
- */
-
-#include "cyttsp4_core.h"
-
-#include <linux/i2c.h>
-#include <linux/input.h>
-
-#define CYTTSP4_I2C_DATA_SIZE	(3 * 256)
-
-static const struct cyttsp4_bus_ops cyttsp4_i2c_bus_ops = {
-	.bustype	= BUS_I2C,
-	.write		= cyttsp_i2c_write_block_data,
-	.read           = cyttsp_i2c_read_block_data,
-};
-
-static int cyttsp4_i2c_probe(struct i2c_client *client)
-{
-	struct cyttsp4 *ts;
-
-	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
-		dev_err(&client->dev, "I2C functionality not Supported\n");
-		return -EIO;
-	}
-
-	ts = cyttsp4_probe(&cyttsp4_i2c_bus_ops, &client->dev, client->irq,
-			  CYTTSP4_I2C_DATA_SIZE);
-
-	return PTR_ERR_OR_ZERO(ts);
-}
-
-static void cyttsp4_i2c_remove(struct i2c_client *client)
-{
-	struct cyttsp4 *ts = i2c_get_clientdata(client);
-
-	cyttsp4_remove(ts);
-}
-
-static const struct i2c_device_id cyttsp4_i2c_id[] = {
-	{ CYTTSP4_I2C_NAME },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);
-
-static struct i2c_driver cyttsp4_i2c_driver = {
-	.driver = {
-		.name	= CYTTSP4_I2C_NAME,
-		.pm	= pm_ptr(&cyttsp4_pm_ops),
-	},
-	.probe		= cyttsp4_i2c_probe,
-	.remove		= cyttsp4_i2c_remove,
-	.id_table	= cyttsp4_i2c_id,
-};
-
-module_i2c_driver(cyttsp4_i2c_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
-MODULE_AUTHOR("Cypress");

drivers/input/touchscreen/cyttsp4_spi.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Source for:
- * Cypress TrueTouch(TM) Standard Product (TTSP) SPI touchscreen driver.
- * For use with Cypress Txx4xx parts.
- * Supported parts include:
- * TMA4XX
- * TMA1036
- *
- * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
- * Copyright (C) 2012 Javier Martinez Canillas <[e-mail]>
- * Copyright (C) 2013 Cypress Semiconductor
- *
- * Contact Cypress Semiconductor at www.cypress.com <[e-mail]>
- */
-
-#include "cyttsp4_core.h"
-
-#include <linux/delay.h>
-#include <linux/input.h>
-#include <linux/spi/spi.h>
-
-#define CY_SPI_WR_OP		0x00 /* r/~w */
-#define CY_SPI_RD_OP		0x01
-#define CY_SPI_BITS_PER_WORD	8
-#define CY_SPI_A8_BIT		0x02
-#define CY_SPI_WR_HEADER_BYTES	2
-#define CY_SPI_RD_HEADER_BYTES	1
-#define CY_SPI_CMD_BYTES	2
-#define CY_SPI_SYNC_BYTE	0
-#define CY_SPI_SYNC_ACK		0x62 /* from TRM *A protocol */
-#define CY_SPI_DATA_SIZE	(2 * 256)
-
-#define CY_SPI_DATA_BUF_SIZE	(CY_SPI_CMD_BYTES + CY_SPI_DATA_SIZE)
-
-static int cyttsp_spi_xfer(struct device *dev, u8 *xfer_buf,
-			   u8 op, u16 reg, u8 *buf, int length)
-{
-	struct spi_device *spi = to_spi_device(dev);
-	struct spi_message msg;
-	struct spi_transfer xfer[2];
-	u8 *wr_buf = &xfer_buf[0];
-	u8 rd_buf[CY_SPI_CMD_BYTES];
-	int retval;
-	int i;
-
-	if (length > CY_SPI_DATA_SIZE) {
-		dev_err(dev, "%s: length %d is too big.\n",
-			__func__, length);
-		return -EINVAL;
-	}
-
-	memset(wr_buf, 0, CY_SPI_DATA_BUF_SIZE);
-	memset(rd_buf, 0, CY_SPI_CMD_BYTES);
-
-	wr_buf[0] = op + (((reg >> 8) & 0x1) ? CY_SPI_A8_BIT : 0);
-	if (op == CY_SPI_WR_OP) {
-		wr_buf[1] = reg & 0xFF;
-		if (length > 0)
-			memcpy(wr_buf + CY_SPI_CMD_BYTES, buf, length);
-	}
-
-	memset(xfer, 0, sizeof(xfer));
-	spi_message_init(&msg);
-
-	/*
-	  We set both TX and RX buffers because Cypress TTSP
-	  requires full duplex operation.
-	*/
-	xfer[0].tx_buf = wr_buf;
-	xfer[0].rx_buf = rd_buf;
-	switch (op) {
-	case CY_SPI_WR_OP:
-		xfer[0].len = length + CY_SPI_CMD_BYTES;
-		spi_message_add_tail(&xfer[0], &msg);
-		break;
-
-	case CY_SPI_RD_OP:
-		xfer[0].len = CY_SPI_RD_HEADER_BYTES;
-		spi_message_add_tail(&xfer[0], &msg);
-
-		xfer[1].rx_buf = buf;
-		xfer[1].len = length;
-		spi_message_add_tail(&xfer[1], &msg);
-		break;
-
-	default:
-		dev_err(dev, "%s: bad operation code=%d\n", __func__, op);
-		return -EINVAL;
-	}
-
-	retval = spi_sync(spi, &msg);
-	if (retval < 0) {
-		dev_dbg(dev, "%s: spi_sync() error %d, len=%d, op=%d\n",
-			__func__, retval, xfer[1].len, op);
-
-		/*
-		 * do not return here since was a bad ACK sequence
-		 * let the following ACK check handle any errors and
-		 * allow silent retries
-		 */
-	}
-
-	if (rd_buf[CY_SPI_SYNC_BYTE] != CY_SPI_SYNC_ACK) {
-		dev_dbg(dev, "%s: operation %d failed\n", __func__, op);
-
-		for (i = 0; i < CY_SPI_CMD_BYTES; i++)
-			dev_dbg(dev, "%s: test rd_buf[%d]:0x%02x\n",
-				__func__, i, rd_buf[i]);
-		for (i = 0; i < length; i++)
-			dev_dbg(dev, "%s: test buf[%d]:0x%02x\n",
-				__func__, i, buf[i]);
-
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static int cyttsp_spi_read_block_data(struct device *dev, u8 *xfer_buf,
-				      u16 addr, u8 length, void *data)
-{
-	int rc;
-
-	rc = cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_WR_OP, addr, NULL, 0);
-	if (rc)
-		return rc;
-	else
-		return cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_RD_OP, addr, data,
-				length);
-}
-
-static int cyttsp_spi_write_block_data(struct device *dev, u8 *xfer_buf,
-				       u16 addr, u8 length, const void *data)
-{
-	return cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_WR_OP, addr, (void *)data,
-			length);
-}
-
-static const struct cyttsp4_bus_ops cyttsp_spi_bus_ops = {
-	.bustype	= BUS_SPI,
-	.write		= cyttsp_spi_write_block_data,
-	.read		= cyttsp_spi_read_block_data,
-};
-
-static int cyttsp4_spi_probe(struct spi_device *spi)
-{
-	struct cyttsp4 *ts;
-	int error;
-
-	/* Set up SPI*/
-	spi->bits_per_word = CY_SPI_BITS_PER_WORD;
-	spi->mode = SPI_MODE_0;
-	error = spi_setup(spi);
-	if (error < 0) {
-		dev_err(&spi->dev, "%s: SPI setup error %d\n",
-			__func__, error);
-		return error;
-	}
-
-	ts = cyttsp4_probe(&cyttsp_spi_bus_ops, &spi->dev, spi->irq,
-			  CY_SPI_DATA_BUF_SIZE);
-
-	return PTR_ERR_OR_ZERO(ts);
-}
-
-static void cyttsp4_spi_remove(struct spi_device *spi)
-{
-	struct cyttsp4 *ts = spi_get_drvdata(spi);
-	cyttsp4_remove(ts);
-}
-
-static struct spi_driver cyttsp4_spi_driver = {
-	.driver = {
-		.name	= CYTTSP4_SPI_NAME,
-		.pm	= pm_ptr(&cyttsp4_pm_ops),
-	},
-	.probe  = cyttsp4_spi_probe,
-	.remove = cyttsp4_spi_remove,
-};
-
-module_spi_driver(cyttsp4_spi_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) SPI driver");
-MODULE_AUTHOR("Cypress");
-MODULE_ALIAS("spi:cyttsp4");

drivers/input/touchscreen/cyttsp_core.c

···
 #include <linux/input.h>
 #include <linux/input/mt.h>
 #include <linux/input/touchscreen.h>
-#include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/property.h>
···
 	return 0;
 }
 
-static void cyttsp_disable_regulators(void *_ts)
-{
-	struct cyttsp *ts = _ts;
-
-	regulator_bulk_disable(ARRAY_SIZE(ts->regulators),
-			       ts->regulators);
-}
-
 struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
 			    struct device *dev, int irq, size_t xfer_buf_size)
 {
+	/*
+	 * VCPIN is the analog voltage supply
+	 * VDD is the digital voltage supply
+	 */
+	static const char * const supplies[] = { "vcpin", "vdd" };
 	struct cyttsp *ts;
 	struct input_dev *input_dev;
 	int error;
···
 	ts->bus_ops = bus_ops;
 	ts->irq = irq;
 
-	/*
-	 * VCPIN is the analog voltage supply
-	 * VDD is the digital voltage supply
-	 */
-	ts->regulators[0].supply = "vcpin";
-	ts->regulators[1].supply = "vdd";
-	error = devm_regulator_bulk_get(dev, ARRAY_SIZE(ts->regulators),
-					ts->regulators);
+	error = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(supplies),
+					       supplies);
 	if (error) {
-		dev_err(dev, "Failed to get regulators: %d\n", error);
-		return ERR_PTR(error);
-	}
-
-	error = regulator_bulk_enable(ARRAY_SIZE(ts->regulators),
-				      ts->regulators);
-	if (error) {
-		dev_err(dev, "Cannot enable regulators: %d\n", error);
-		return ERR_PTR(error);
-	}
-
-	error = devm_add_action_or_reset(dev, cyttsp_disable_regulators, ts);
-	if (error) {
-		dev_err(dev, "failed to install chip disable handler\n");
+		dev_err(dev, "Failed to enable regulators: %d\n", error);
 		return ERR_PTR(error);
 	}
 

drivers/input/touchscreen/cyttsp_core.h

···
 	enum cyttsp_state state;
 	bool suspended;
 
-	struct regulator_bulk_data regulators[2];
 	struct gpio_desc *reset_gpio;
 	bool use_hndshk;
 	u8 act_dist;
···
 struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
 			    struct device *dev, int irq, size_t xfer_buf_size);
 
-int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
-		u8 length, const void *values);
-int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
-		u8 length, void *values);
 extern const struct dev_pm_ops cyttsp_pm_ops;
 
 #endif /* __CYTTSP_CORE_H__ */

drivers/input/touchscreen/cyttsp_i2c.c

···
 
 #define CY_I2C_DATA_SIZE	128
 
+static int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf,
+				      u16 addr, u8 length, void *values)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	u8 client_addr = client->addr | ((addr >> 8) & 0x1);
+	u8 addr_lo = addr & 0xFF;
+	struct i2c_msg msgs[] = {
+		{
+			.addr = client_addr,
+			.flags = 0,
+			.len = 1,
+			.buf = &addr_lo,
+		},
+		{
+			.addr = client_addr,
+			.flags = I2C_M_RD,
+			.len = length,
+			.buf = values,
+		},
+	};
+	int retval;
+
+	retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (retval < 0)
+		return retval;
+
+	return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
+}
+
+static int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf,
+				       u16 addr, u8 length, const void *values)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	u8 client_addr = client->addr | ((addr >> 8) & 0x1);
+	u8 addr_lo = addr & 0xFF;
+	struct i2c_msg msgs[] = {
+		{
+			.addr = client_addr,
+			.flags = 0,
+			.len = length + 1,
+			.buf = xfer_buf,
+		},
+	};
+	int retval;
+
+	xfer_buf[0] = addr_lo;
+	memcpy(&xfer_buf[1], values, length);
+
+	retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (retval < 0)
+		return retval;
+
+	return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
+}
+
 static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
 	.bustype	= BUS_I2C,
 	.write		= cyttsp_i2c_write_block_data,

drivers/input/touchscreen/cyttsp_i2c_common.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * cyttsp_i2c_common.c
- * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
- * For use with Cypress Txx3xx and Txx4xx parts.
- * Supported parts include:
- * CY8CTST341
- * CY8CTMA340
- * TMA4XX
- * TMA1036
- *
- * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
- * Copyright (C) 2012 Javier Martinez Canillas <[e-mail]>
- *
- * Contact Cypress Semiconductor at www.cypress.com <[e-mail]>
- */
-
-#include <linux/device.h>
-#include <linux/export.h>
-#include <linux/i2c.h>
-#include <linux/module.h>
-#include <linux/types.h>
-
-#include "cyttsp4_core.h"
-
-int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf,
-				      u16 addr, u8 length, void *values)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	u8 client_addr = client->addr | ((addr >> 8) & 0x1);
-	u8 addr_lo = addr & 0xFF;
-	struct i2c_msg msgs[] = {
-		{
-			.addr = client_addr,
-			.flags = 0,
-			.len = 1,
-			.buf = &addr_lo,
-		},
-		{
-			.addr = client_addr,
-			.flags = I2C_M_RD,
-			.len = length,
-			.buf = values,
-		},
-	};
-	int retval;
-
-	retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
-	if (retval < 0)
-		return retval;
-
-	return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
-}
-EXPORT_SYMBOL_GPL(cyttsp_i2c_read_block_data);
-
-int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf,
-				       u16 addr, u8 length, const void *values)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	u8 client_addr = client->addr | ((addr >> 8) & 0x1);
-	u8 addr_lo = addr & 0xFF;
-	struct i2c_msg msgs[] = {
-		{
-			.addr = client_addr,
-			.flags = 0,
-			.len = length + 1,
-			.buf = xfer_buf,
-		},
-	};
-	int retval;
-
-	xfer_buf[0] = addr_lo;
-	memcpy(&xfer_buf[1], values, length);
-
-	retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
-	if (retval < 0)
-		return retval;
-
-	return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
-}
-EXPORT_SYMBOL_GPL(cyttsp_i2c_write_block_data);
-
-
-MODULE_DESCRIPTION("Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Cypress");

drivers/input/touchscreen/goodix_berlin.h

···
 			struct regmap *regmap);
 
 extern const struct dev_pm_ops goodix_berlin_pm_ops;
+extern const struct attribute_group *goodix_berlin_groups[];
 
 #endif

drivers/input/touchscreen/goodix_berlin_core.c

···
 	goodix_berlin_power_off(cd);
 }
 
+static ssize_t registers_read(struct file *filp, struct kobject *kobj,
+			      struct bin_attribute *bin_attr,
+			      char *buf, loff_t off, size_t count)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct goodix_berlin_core *cd = dev_get_drvdata(dev);
+	int error;
+
+	error = regmap_raw_read(cd->regmap, off, buf, count);
+
+	return error ? error : count;
+}
+
+static ssize_t registers_write(struct file *filp, struct kobject *kobj,
+			       struct bin_attribute *bin_attr,
+			       char *buf, loff_t off, size_t count)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct goodix_berlin_core *cd = dev_get_drvdata(dev);
+	int error;
+
+	error = regmap_raw_write(cd->regmap, off, buf, count);
+
+	return error ? error : count;
+}
+
+static BIN_ATTR_ADMIN_RW(registers, 0);
+
+static struct bin_attribute *goodix_berlin_bin_attrs[] = {
+	&bin_attr_registers,
+	NULL,
+};
+
+static const struct attribute_group goodix_berlin_attr_group = {
+	.bin_attrs = goodix_berlin_bin_attrs,
+};
+
+const struct attribute_group *goodix_berlin_groups[] = {
+	&goodix_berlin_attr_group,
+	NULL,
+};
+EXPORT_SYMBOL_GPL(goodix_berlin_groups);
+
 int goodix_berlin_probe(struct device *dev, int irq, const struct input_id *id,
 			struct regmap *regmap)
 {

drivers/input/touchscreen/goodix_berlin_i2c.c

···
 		.name = "goodix-berlin-i2c",
 		.of_match_table = goodix_berlin_i2c_of_match,
 		.pm = pm_sleep_ptr(&goodix_berlin_pm_ops),
+		.dev_groups = goodix_berlin_groups,
 	},
 	.probe = goodix_berlin_i2c_probe,
 	.id_table = goodix_berlin_i2c_id,

drivers/input/touchscreen/goodix_berlin_spi.c

···
 		.name = "goodix-berlin-spi",
 		.of_match_table = goodix_berlin_spi_of_match,
 		.pm = pm_sleep_ptr(&goodix_berlin_pm_ops),
+		.dev_groups = goodix_berlin_groups,
 	},
 	.probe = goodix_berlin_spi_probe,
 	.id_table = goodix_berlin_spi_ids,

drivers/input/touchscreen/hynitron_cstxxx.c

···
 };
 
 static const struct i2c_device_id hyn_tpd_id[] = {
-	{ .name = "hynitron_ts", 0 },
+	{ .name = "hynitron_ts" },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(i2c, hyn_tpd_id);

drivers/input/touchscreen/ilitek_ts_i2c.c

···
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
-#include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
 #include <linux/errno.h>
 #include <linux/acpi.h>
···
 #define ILITEK_TP_CMD_GET_PRL_VER			0x42
 #define ILITEK_TP_CMD_GET_MCU_VER			0x61
 #define ILITEK_TP_CMD_GET_IC_MODE			0xC0
+
+#define ILITEK_TP_I2C_REPORT_ID				0x48
 
 #define REPORT_COUNT_ADDRESS				61
 #define ILITEK_SUPPORT_MAX_POINT			40
···
 	error = ilitek_i2c_write_and_read(ts, NULL, 0, 0, buf, 64);
 	if (error) {
 		dev_err(dev, "get touch info failed, err:%d\n", error);
-		goto err_sync_frame;
+		return error;
+	}
+
+	if (buf[0] != ILITEK_TP_I2C_REPORT_ID) {
+		dev_err(dev, "get touch info failed. Wrong id: 0x%02X\n", buf[0]);
+		return -EINVAL;
 	}
 
 	report_max_point = buf[REPORT_COUNT_ADDRESS];
 	if (report_max_point > ts->max_tp) {
 		dev_err(dev, "FW report max point:%d > panel info. max:%d\n",
 			report_max_point, ts->max_tp);
-		error = -EINVAL;
-		goto err_sync_frame;
+		return -EINVAL;
 	}
 
 	count = DIV_ROUND_UP(report_max_point, packet_max_point);
···
 		if (error) {
 			dev_err(dev, "get touch info. failed, cnt:%d, err:%d\n",
 				count, error);
-			goto err_sync_frame;
+			return error;
 		}
 	}
 
···
 		ilitek_touch_down(ts, id, x, y);
 	}
 
-err_sync_frame:
 	input_mt_sync_frame(input);
 	input_sync(input);
-	return error;
+
+	return 0;
 }
 
 /* APIs of cmds for ILITEK Touch IC */

drivers/input/touchscreen/mcs5000_ts.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * mcs5000_ts.c - Touchscreen driver for MELFAS MCS-5000 controller
- *
- * Copyright (C) 2009 Samsung Electronics Co.Ltd
- * Author: Joonyoung Shim <[e-mail]>
- *
- * Based on wm97xx-core.c
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/input.h>
-#include <linux/irq.h>
-#include <linux/platform_data/mcs.h>
-#include <linux/slab.h>
-
-/* Registers */
-#define MCS5000_TS_STATUS		0x00
-#define STATUS_OFFSET			0
-#define STATUS_NO			(0 << STATUS_OFFSET)
-#define STATUS_INIT			(1 << STATUS_OFFSET)
-#define STATUS_SENSING			(2 << STATUS_OFFSET)
-#define STATUS_COORD			(3 << STATUS_OFFSET)
-#define STATUS_GESTURE			(4 << STATUS_OFFSET)
-#define ERROR_OFFSET			4
-#define ERROR_NO			(0 << ERROR_OFFSET)
-#define ERROR_POWER_ON_RESET		(1 << ERROR_OFFSET)
-#define ERROR_INT_RESET			(2 << ERROR_OFFSET)
-#define ERROR_EXT_RESET			(3 << ERROR_OFFSET)
-#define ERROR_INVALID_REG_ADDRESS	(8 << ERROR_OFFSET)
-#define ERROR_INVALID_REG_VALUE		(9 << ERROR_OFFSET)
-
-#define MCS5000_TS_OP_MODE		0x01
-#define RESET_OFFSET			0
-#define RESET_NO			(0 << RESET_OFFSET)
-#define RESET_EXT_SOFT			(1 << RESET_OFFSET)
-#define OP_MODE_OFFSET			1
-#define OP_MODE_SLEEP			(0 << OP_MODE_OFFSET)
-#define OP_MODE_ACTIVE			(1 << OP_MODE_OFFSET)
-#define GESTURE_OFFSET			4
-#define GESTURE_DISABLE			(0 << GESTURE_OFFSET)
-#define GESTURE_ENABLE			(1 << GESTURE_OFFSET)
-#define PROXIMITY_OFFSET		5
-#define PROXIMITY_DISABLE		(0 << PROXIMITY_OFFSET)
-#define PROXIMITY_ENABLE		(1 << PROXIMITY_OFFSET)
-#define SCAN_MODE_OFFSET		6
-#define SCAN_MODE_INTERRUPT		(0 << SCAN_MODE_OFFSET)
-#define SCAN_MODE_POLLING		(1 << SCAN_MODE_OFFSET)
-#define REPORT_RATE_OFFSET		7
-#define REPORT_RATE_40			(0 << REPORT_RATE_OFFSET)
-#define REPORT_RATE_80			(1 << REPORT_RATE_OFFSET)
-
-#define MCS5000_TS_SENS_CTL		0x02
-#define MCS5000_TS_FILTER_CTL		0x03
-#define PRI_FILTER_OFFSET		0
-#define SEC_FILTER_OFFSET		4
-
-#define MCS5000_TS_X_SIZE_UPPER		0x08
-#define MCS5000_TS_X_SIZE_LOWER		0x09
-#define MCS5000_TS_Y_SIZE_UPPER		0x0A
-#define MCS5000_TS_Y_SIZE_LOWER		0x0B
-
-#define MCS5000_TS_INPUT_INFO		0x10
-#define INPUT_TYPE_OFFSET		0
-#define INPUT_TYPE_NONTOUCH		(0 << INPUT_TYPE_OFFSET)
-#define INPUT_TYPE_SINGLE		(1 << INPUT_TYPE_OFFSET)
-#define INPUT_TYPE_DUAL			(2 << INPUT_TYPE_OFFSET)
-#define INPUT_TYPE_PALM			(3 << INPUT_TYPE_OFFSET)
-#define INPUT_TYPE_PROXIMITY		(7 << INPUT_TYPE_OFFSET)
-#define GESTURE_CODE_OFFSET		3
-#define GESTURE_CODE_NO			(0 << GESTURE_CODE_OFFSET)
-
-#define MCS5000_TS_X_POS_UPPER		0x11
-#define MCS5000_TS_X_POS_LOWER		0x12
-#define MCS5000_TS_Y_POS_UPPER		0x13
-#define MCS5000_TS_Y_POS_LOWER		0x14
-#define MCS5000_TS_Z_POS		0x15
-#define MCS5000_TS_WIDTH		0x16
-#define MCS5000_TS_GESTURE_VAL		0x17
-#define MCS5000_TS_MODULE_REV		0x20
-#define MCS5000_TS_FIRMWARE_VER		0x21
-
-/* Touchscreen absolute values */
-#define MCS5000_MAX_XC			0x3ff
-#define MCS5000_MAX_YC			0x3ff
-
-enum mcs5000_ts_read_offset {
-	READ_INPUT_INFO,
-	READ_X_POS_UPPER,
-	READ_X_POS_LOWER,
-	READ_Y_POS_UPPER,
-	READ_Y_POS_LOWER,
-	READ_BLOCK_SIZE,
-};
-
-/* Each client has this additional data */
-struct mcs5000_ts_data {
-	struct i2c_client *client;
-	struct input_dev *input_dev;
-	const struct mcs_platform_data *platform_data;
-};
-
-static irqreturn_t mcs5000_ts_interrupt(int irq, void *dev_id)
-{
-	struct mcs5000_ts_data *data = dev_id;
-	struct i2c_client *client = data->client;
-	u8 buffer[READ_BLOCK_SIZE];
-	int err;
-	int x;
-	int y;
-
-	err = i2c_smbus_read_i2c_block_data(client, MCS5000_TS_INPUT_INFO,
-			READ_BLOCK_SIZE, buffer);
-	if (err < 0) {
-		dev_err(&client->dev, "%s, err[%d]\n", __func__, err);
-		goto out;
-	}
-
-	switch (buffer[READ_INPUT_INFO]) {
-	case INPUT_TYPE_NONTOUCH:
-		input_report_key(data->input_dev, BTN_TOUCH, 0);
-		input_sync(data->input_dev);
-		break;
-
-	case INPUT_TYPE_SINGLE:
-		x = (buffer[READ_X_POS_UPPER] << 8) | buffer[READ_X_POS_LOWER];
-		y = (buffer[READ_Y_POS_UPPER] << 8) | buffer[READ_Y_POS_LOWER];
-
-		input_report_key(data->input_dev, BTN_TOUCH, 1);
-		input_report_abs(data->input_dev, ABS_X, x);
-		input_report_abs(data->input_dev, ABS_Y, y);
-		input_sync(data->input_dev);
-		break;
-
-	case INPUT_TYPE_DUAL:
-		/* TODO */
-		break;
-
-	case INPUT_TYPE_PALM:
-		/* TODO */
-		break;
-
-	case INPUT_TYPE_PROXIMITY:
-		/* TODO */
-		break;
-
-	default:
-		dev_err(&client->dev, "Unknown ts input type %d\n",
-				buffer[READ_INPUT_INFO]);
-		break;
-	}
-
- out:
-	return IRQ_HANDLED;
-}
-
-static void mcs5000_ts_phys_init(struct mcs5000_ts_data *data,
-				 const struct mcs_platform_data *platform_data)
-{
-	struct i2c_client *client = data->client;
-
-	/* Touch reset & sleep mode */
-	i2c_smbus_write_byte_data(client, MCS5000_TS_OP_MODE,
-			RESET_EXT_SOFT | OP_MODE_SLEEP);
-
-	/* Touch size */
-	i2c_smbus_write_byte_data(client, MCS5000_TS_X_SIZE_UPPER,
-			platform_data->x_size >> 8);
-	i2c_smbus_write_byte_data(client, MCS5000_TS_X_SIZE_LOWER,
-			platform_data->x_size & 0xff);
-	i2c_smbus_write_byte_data(client, MCS5000_TS_Y_SIZE_UPPER,
-			platform_data->y_size >> 8);
-	i2c_smbus_write_byte_data(client, MCS5000_TS_Y_SIZE_LOWER,
-			platform_data->y_size & 0xff);
-
-	/* Touch active mode & 80 report rate */
-	i2c_smbus_write_byte_data(data->client, MCS5000_TS_OP_MODE,
-			OP_MODE_ACTIVE | REPORT_RATE_80);
-}
-
-static int mcs5000_ts_probe(struct i2c_client *client)
-{
-	const struct mcs_platform_data *pdata;
-	struct mcs5000_ts_data *data;
-	struct input_dev *input_dev;
-	int error;
-
-	pdata = dev_get_platdata(&client->dev);
-	if (!pdata)
-		return -EINVAL;
-
-	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
-	if (!data) {
-		dev_err(&client->dev, "Failed to allocate memory\n");
-		return -ENOMEM;
-	}
-
-	data->client = client;
-
-	input_dev = devm_input_allocate_device(&client->dev);
-	if (!input_dev) {
-		dev_err(&client->dev, "Failed to allocate input device\n");
-		return -ENOMEM;
-	}
-
-	input_dev->name = "MELFAS MCS-5000 Touchscreen";
-	input_dev->id.bustype = BUS_I2C;
-	input_dev->dev.parent = &client->dev;
-
-	__set_bit(EV_ABS, input_dev->evbit);
-	__set_bit(EV_KEY, input_dev->evbit);
-	__set_bit(BTN_TOUCH, input_dev->keybit);
-	input_set_abs_params(input_dev, ABS_X, 0, MCS5000_MAX_XC, 0, 0);
-	input_set_abs_params(input_dev, ABS_Y, 0, MCS5000_MAX_YC, 0, 0);
-
-	data->input_dev = input_dev;
-
-	if (pdata->cfg_pin)
-		pdata->cfg_pin();
-
-	error = devm_request_threaded_irq(&client->dev, client->irq,
-					  NULL, mcs5000_ts_interrupt,
-					  IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-					  "mcs5000_ts", data);
-	if (error) {
-		dev_err(&client->dev, "Failed to register interrupt\n");
-		return error;
-	}
-
-	error = input_register_device(data->input_dev);
-	if (error) {
-		dev_err(&client->dev, "Failed to register input device\n");
-		return error;
-	}
-
-	mcs5000_ts_phys_init(data, pdata);
-	i2c_set_clientdata(client, data);
-
-	return 0;
-}
-
-static int mcs5000_ts_suspend(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-
-	/* Touch sleep mode */
-	i2c_smbus_write_byte_data(client, MCS5000_TS_OP_MODE, OP_MODE_SLEEP);
-
-	return 0;
-}
-
-static int mcs5000_ts_resume(struct device *dev)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct mcs5000_ts_data *data = i2c_get_clientdata(client);
-	const struct mcs_platform_data *pdata = dev_get_platdata(dev);
-
-	mcs5000_ts_phys_init(data, pdata);
-
-	return 0;
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(mcs5000_ts_pm,
-				mcs5000_ts_suspend, mcs5000_ts_resume);
-
-static const struct i2c_device_id mcs5000_ts_id[] = {
-	{ "mcs5000_ts" },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, mcs5000_ts_id);
-
-static struct i2c_driver mcs5000_ts_driver = {
-	.probe		= mcs5000_ts_probe,
-	.driver = {
-		.name = "mcs5000_ts",
-		.pm   = pm_sleep_ptr(&mcs5000_ts_pm),
-	},
-	.id_table	= mcs5000_ts_id,
-};
-
-module_i2c_driver(mcs5000_ts_driver);
-
-/* Module information */
-MODULE_AUTHOR("Joonyoung Shim <[e-mail]>");
-MODULE_DESCRIPTION("Touchscreen driver for MELFAS MCS-5000 controller");
-MODULE_LICENSE("GPL");

drivers/input/touchscreen/tsc2004.c

···
 			     tsc2004_cmd);
 }
 
-static void tsc2004_remove(struct i2c_client *i2c)
-{
-	tsc200x_remove(&i2c->dev);
-}
-
 static const struct i2c_device_id tsc2004_idtable[] = {
 	{ "tsc2004" },
 	{ }
···
 	},
 	.id_table       = tsc2004_idtable,
 	.probe          = tsc2004_probe,
-	.remove         = tsc2004_remove,
 };
 module_i2c_driver(tsc2004_driver);
 

drivers/input/touchscreen/tsc2005.c

···
 			     tsc2005_cmd);
 }
 
-static void tsc2005_remove(struct spi_device *spi)
-{
-	tsc200x_remove(&spi->dev);
-}
-
 #ifdef CONFIG_OF
 static const struct of_device_id tsc2005_of_match[] = {
 	{ .compatible = "ti,tsc2005" },
···
 		.pm		= pm_sleep_ptr(&tsc200x_pm_ops),
 	},
 	.probe	= tsc2005_probe,
-	.remove	= tsc2005_remove,
 };
 module_spi_driver(tsc2005_driver);
 

drivers/input/touchscreen/tsc200x-core.c

···
 
 	bool			pen_down;
 
-	struct regulator	*vio;
-
 	struct gpio_desc	*reset_gpio;
 	int			(*tsc200x_cmd)(struct device *dev, u8 cmd);
+
 	int			irq;
+	bool			wake_irq_enabled;
 };
 
 static void tsc200x_update_pen_state(struct tsc200x *ts,
···
 static irqreturn_t tsc200x_irq_thread(int irq, void *_ts)
 {
 	struct tsc200x *ts = _ts;
-	unsigned long flags;
 	unsigned int pressure;
 	struct tsc200x_data tsdata;
 	int error;
···
 	if (unlikely(pressure > MAX_12BIT))
 		goto out;
 
-	spin_lock_irqsave(&ts->lock, flags);
-
-	tsc200x_update_pen_state(ts, tsdata.x, tsdata.y, pressure);
-	mod_timer(&ts->penup_timer,
-		  jiffies + msecs_to_jiffies(TSC200X_PENUP_TIME_MS));
-
-	spin_unlock_irqrestore(&ts->lock, flags);
+	scoped_guard(spinlock_irqsave, &ts->lock) {
+		tsc200x_update_pen_state(ts, tsdata.x, tsdata.y, pressure);
+		mod_timer(&ts->penup_timer,
+			  jiffies + msecs_to_jiffies(TSC200X_PENUP_TIME_MS));
+	}
 
 	ts->last_valid_interrupt = jiffies;
 out:
···
 static void tsc200x_penup_timer(struct timer_list *t)
 {
 	struct tsc200x *ts = from_timer(ts, t, penup_timer);
-	unsigned long flags;
 
-	spin_lock_irqsave(&ts->lock, flags);
+	guard(spinlock_irqsave)(&ts->lock);
 	tsc200x_update_pen_state(ts, 0, 0, 0);
-	spin_unlock_irqrestore(&ts->lock, flags);
 }
 
 static void tsc200x_start_scan(struct tsc200x *ts)
···
 {
 	tsc200x_stop_scan(ts);
 
-	disable_irq(ts->irq);
+	guard(disable_irq)(&ts->irq);
+
 	del_timer_sync(&ts->penup_timer);
-
 	cancel_delayed_work_sync(&ts->esd_work);
-
-	enable_irq(ts->irq);
 }
 
 /* must be called with ts->mutex held */
···
 	}
 }
 
-static ssize_t tsc200x_selftest_show(struct device *dev,
-				     struct device_attribute *attr,
-				     char *buf)
+/*
+ * Test TSC200X communications via temp high register.
+ */
+static int tsc200x_do_selftest(struct tsc200x *ts)
 {
-	struct tsc200x *ts = dev_get_drvdata(dev);
-	unsigned int temp_high;
 	unsigned int temp_high_orig;
 	unsigned int temp_high_test;
-	bool success = true;
+	unsigned int temp_high;
 	int error;
-
-	mutex_lock(&ts->mutex);
-
-	/*
-	 * Test TSC200X communications via temp high register.
-	 */
-	__tsc200x_disable(ts);
 
 	error = regmap_read(ts->regmap, TSC200X_REG_TEMP_HIGH, &temp_high_orig);
 	if (error) {
-		dev_warn(dev, "selftest failed: read error %d\n", error);
-		success = false;
-		goto out;
+		dev_warn(ts->dev, "selftest failed: read error %d\n", error);
+		return error;
 	}
 
 	temp_high_test = (temp_high_orig - 1) & MAX_12BIT;
 
 	error = regmap_write(ts->regmap, TSC200X_REG_TEMP_HIGH, temp_high_test);
 	if (error) {
-		dev_warn(dev, "selftest failed: write error %d\n", error);
-		success = false;
-		goto out;
+		dev_warn(ts->dev, "selftest failed: write error %d\n", error);
+		return error;
 	}
 
 	error = regmap_read(ts->regmap, TSC200X_REG_TEMP_HIGH, &temp_high);
 	if (error) {
-		dev_warn(dev, "selftest failed: read error %d after write\n",
-			 error);
-		success = false;
-		goto out;
-	}
-
-	if (temp_high != temp_high_test) {
-		dev_warn(dev, "selftest failed: %d != %d\n",
-			 temp_high, temp_high_test);
-		success = false;
+		dev_warn(ts->dev,
+			 "selftest failed: read error %d after write\n", error);
+		return error;
 	}
 
 	/* hardware reset */
 	tsc200x_reset(ts);
 
-	if (!success)
-		goto out;
+	if (temp_high != temp_high_test) {
+		dev_warn(ts->dev, "selftest failed: %d != %d\n",
+			 temp_high, temp_high_test);
+		return -EINVAL;
+	}
 
 	/* test that the reset really happened */
 	error = regmap_read(ts->regmap, TSC200X_REG_TEMP_HIGH, &temp_high);
 	if (error) {
-		dev_warn(dev, "selftest failed: read error %d after reset\n",
-			 error);
-		success = false;
-		goto out;
+		dev_warn(ts->dev,
+			 "selftest failed: read error %d after reset\n", error);
+		return error;
 	}
 
 	if (temp_high != temp_high_orig) {
-		dev_warn(dev, "selftest failed after reset: %d != %d\n",
+		dev_warn(ts->dev, "selftest failed after reset: %d != %d\n",
 			 temp_high, temp_high_orig);
-		success = false;
+		return -EINVAL;
 	}
 
-out:
-	__tsc200x_enable(ts);
-	mutex_unlock(&ts->mutex);
+	return 0;
+}
 
-	return sprintf(buf, "%d\n", success);
+static ssize_t tsc200x_selftest_show(struct device *dev,
+				     struct device_attribute *attr,
+				     char *buf)
+{
+	struct tsc200x *ts = dev_get_drvdata(dev);
+	int error;
+
+	scoped_guard(mutex, &ts->mutex) {
+		__tsc200x_disable(ts);
+
+		error = tsc200x_do_selftest(ts);
+
+		__tsc200x_enable(ts);
+	}
+
+	return sprintf(buf, "%d\n", !error);
 }
 
 static DEVICE_ATTR(selftest, S_IRUGO, tsc200x_selftest_show, NULL);
···
 	int error;
 	unsigned int r;
 
-	if (!mutex_trylock(&ts->mutex)) {
-		/*
-		 * If the mutex is taken, it means that disable or enable is in
-		 * progress. In that case just reschedule the work. If the work
-		 * is not needed, it will be canceled by disable.
-		 */
-		goto reschedule;
-	}
-
-	if (time_is_after_jiffies(ts->last_valid_interrupt +
-				  msecs_to_jiffies(ts->esd_timeout)))
-		goto out;
-
-	/* We should be able to read register without disabling interrupts. */
-	error = regmap_read(ts->regmap, TSC200X_REG_CFR0, &r);
-	if (!error &&
-	    !((r ^ TSC200X_CFR0_INITVALUE) & TSC200X_CFR0_RW_MASK)) {
-		goto out;
-	}
-
 	/*
-	 * If we could not read our known value from configuration register 0
-	 * then we should reset the controller as if from power-up and start
-	 * scanning again.
+	 * If the mutex is taken, it means that disable or enable is in
+	 * progress. In that case just reschedule the work. If the work
+	 * is not needed, it will be canceled by disable.
 	 */
-	dev_info(ts->dev, "TSC200X not responding - resetting\n");
+	scoped_guard(mutex_try, &ts->mutex) {
+		if (time_is_after_jiffies(ts->last_valid_interrupt +
+					  msecs_to_jiffies(ts->esd_timeout)))
+			break;
 
-	disable_irq(ts->irq);
-	del_timer_sync(&ts->penup_timer);
+		/*
+		 * We should be able to read register without disabling
+		 * interrupts.
+		 */
+		error = regmap_read(ts->regmap, TSC200X_REG_CFR0, &r);
+		if (!error &&
+		    !((r ^ TSC200X_CFR0_INITVALUE) & TSC200X_CFR0_RW_MASK)) {
+			break;
+		}
 
-	tsc200x_update_pen_state(ts, 0, 0, 0);
+		/*
+		 * If we could not read our known value from configuration
+		 * register 0 then we should reset the controller as if from
+		 * power-up and start scanning again.
+		 */
+		dev_info(ts->dev, "TSC200X not responding - resetting\n");
 
-	tsc200x_reset(ts);
+		scoped_guard(disable_irq, &ts->irq) {
+			del_timer_sync(&ts->penup_timer);
+			tsc200x_update_pen_state(ts, 0, 0, 0);
+			tsc200x_reset(ts);
+		}
 
-	enable_irq(ts->irq);
-	tsc200x_start_scan(ts);
+		tsc200x_start_scan(ts);
+	}
 
-out:
-	mutex_unlock(&ts->mutex);
-reschedule:
 	/* re-arm the watchdog */
 	schedule_delayed_work(&ts->esd_work,
 			      round_jiffies_relative(
···
 {
 	struct tsc200x *ts = input_get_drvdata(input);
 
-	mutex_lock(&ts->mutex);
+	guard(mutex)(&ts->mutex);
 
 	if (!ts->suspended)
 		__tsc200x_enable(ts);
 
 	ts->opened = true;
-
-	mutex_unlock(&ts->mutex);
 
 	return 0;
 }
···
 {
 	struct tsc200x *ts = input_get_drvdata(input);
 
-	mutex_lock(&ts->mutex);
+	guard(mutex)(&ts->mutex);
 
 	if (!ts->suspended)
 		__tsc200x_disable(ts);
 
 	ts->opened = false;
-
-	mutex_unlock(&ts->mutex);
 }
 
 int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
···
 					 &esd_timeout);
 	ts->esd_timeout = error ? 0 : esd_timeout;
 
-	ts->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(ts->reset_gpio)) {
-		error = PTR_ERR(ts->reset_gpio);
-		dev_err(dev, "error acquiring reset gpio: %d\n", error);
-		return error;
-	}
-
-	ts->vio = devm_regulator_get(dev, "vio");
-	if (IS_ERR(ts->vio)) {
-		error = PTR_ERR(ts->vio);
-		dev_err(dev, "error acquiring vio regulator: %d", error);
-		return error;
-	}
-
 	mutex_init(&ts->mutex);
 
 	spin_lock_init(&ts->lock);
···
 
 	touchscreen_parse_properties(input_dev, false, &ts->prop);
 
+	ts->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+	error = PTR_ERR_OR_ZERO(ts->reset_gpio);
+	if (error) {
+		dev_err(dev, "error acquiring reset gpio: %d\n", error);
+		return error;
+	}
+
+	error = devm_regulator_get_enable(dev, "vio");
+	if (error) {
+		dev_err(dev, "error acquiring vio regulator: %d\n", error);
+		return error;
+	}
+
+	tsc200x_reset(ts);
+
 	/* Ensure the touchscreen is off */
 	tsc200x_stop_scan(ts);
 
-	error = devm_request_threaded_irq(dev, irq, NULL,
-					  tsc200x_irq_thread,
-					  IRQF_TRIGGER_RISING | IRQF_ONESHOT,
-					  "tsc200x", ts);
+	error = devm_request_threaded_irq(dev, irq, NULL, tsc200x_irq_thread,
+					  IRQF_ONESHOT, "tsc200x", ts);
 	if (error) {
 		dev_err(dev, "Failed to request irq, err: %d\n", error);
 		return error;
 	}
-
-	error = regulator_enable(ts->vio);
-	if (error)
-		return error;
 
 	dev_set_drvdata(dev, ts);
 
···
 	if (error) {
 		dev_err(dev,
 			"Failed to register input device, err: %d\n", error);
-		goto disable_regulator;
+		return error;
 	}
 
-	irq_set_irq_wake(irq, 1);
-	return 0;
+	device_init_wakeup(dev,
+			   device_property_read_bool(dev, "wakeup-source"));
 
-disable_regulator:
-	regulator_disable(ts->vio);
-	return error;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(tsc200x_probe);
-
-void tsc200x_remove(struct device *dev)
-{
-	struct tsc200x *ts = dev_get_drvdata(dev);
-
-	regulator_disable(ts->vio);
-}
-EXPORT_SYMBOL_GPL(tsc200x_remove);
 
 static int tsc200x_suspend(struct device *dev)
 {
 	struct tsc200x *ts = dev_get_drvdata(dev);
 
-	mutex_lock(&ts->mutex);
+	guard(mutex)(&ts->mutex);
 
 	if (!ts->suspended && ts->opened)
 		__tsc200x_disable(ts);
 
 	ts->suspended = true;
 
-	mutex_unlock(&ts->mutex);
+	if (device_may_wakeup(dev))
+		ts->wake_irq_enabled = enable_irq_wake(ts->irq) == 0;
 
 	return 0;
 }
···
 {
 	struct tsc200x *ts = dev_get_drvdata(dev);
 
-	mutex_lock(&ts->mutex);
+	guard(mutex)(&ts->mutex);
+
+	if (ts->wake_irq_enabled) {
+		disable_irq_wake(ts->irq);
+		ts->wake_irq_enabled = false;
+	}
 
 	if (ts->suspended && ts->opened)
 		__tsc200x_enable(ts);
 
 	ts->suspended = false;
-
-	mutex_unlock(&ts->mutex);
 
 	return 0;
 }

drivers/input/touchscreen/tsc200x-core.h

···
 int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id,
 		  struct regmap *regmap,
 		  int (*tsc200x_cmd)(struct device *dev, u8 cmd));
-void tsc200x_remove(struct device *dev);
 
 #endif

drivers/input/touchscreen/usbtouchscreen.c

···
 	 */
 	bool irq_always;
 
-	void (*process_pkt) (struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
-
 	/*
 	 * used to get the packet len. possible return values:
 	 * > 0: packet len
···
 	struct urb *irq;
 	struct usb_interface *interface;
 	struct input_dev *input;
-	struct usbtouch_device_info *type;
+	const struct usbtouch_device_info *type;
 	struct mutex pm_mutex;  /* serialize access to open/suspend */
 	bool is_open;
 	char name[128];
···
 
 	int x, y;
 	int touch, press;
-};
 
-
-/* device types */
-enum {
-	DEVTYPE_IGNORE = -1,
-	DEVTYPE_EGALAX,
-	DEVTYPE_PANJIT,
-	DEVTYPE_3M,
-	DEVTYPE_ITM,
-	DEVTYPE_ETURBO,
-	DEVTYPE_GUNZE,
-	DEVTYPE_DMC_TSC10,
-	DEVTYPE_IRTOUCH,
-	DEVTYPE_IRTOUCH_HIRES,
-	DEVTYPE_IDEALTEK,
-	DEVTYPE_GENERAL_TOUCH,
-	DEVTYPE_GOTOP,
-	DEVTYPE_JASTEC,
-	DEVTYPE_E2I,
-	DEVTYPE_ZYTRONIC,
-	DEVTYPE_TC45USB,
-	DEVTYPE_NEXIO,
-	DEVTYPE_ELO,
-	DEVTYPE_ETOUCH,
-};
-
-#define USB_DEVICE_HID_CLASS(vend, prod) \
-	.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS \
-		| USB_DEVICE_ID_MATCH_DEVICE, \
-	.idVendor = (vend), \
-	.idProduct = (prod), \
-	.bInterfaceClass = USB_INTERFACE_CLASS_HID
-
-static const struct usb_device_id usbtouch_devices[] = {
-#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
-	/* ignore the HID capable devices, handled by usbhid */
-	{USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info = DEVTYPE_IGNORE},
-	{USB_DEVICE_HID_CLASS(0x0eef, 0x0002), .driver_info = DEVTYPE_IGNORE},
-
-	/* normal device IDs */
-	{USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
-	{USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
-	{USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
-	{USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
-	{USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
-	{USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
-	{USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
-	{USB_DEVICE(0x134c, 0x0001), .driver_info = DEVTYPE_PANJIT},
-	{USB_DEVICE(0x134c, 0x0002), .driver_info = DEVTYPE_PANJIT},
-	{USB_DEVICE(0x134c, 0x0003), .driver_info = DEVTYPE_PANJIT},
-	{USB_DEVICE(0x134c, 0x0004), .driver_info = DEVTYPE_PANJIT},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_3M
-	{USB_DEVICE(0x0596, 0x0001), .driver_info = DEVTYPE_3M},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ITM
-	{USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
-	{USB_DEVICE(0x16e3, 0xf9e9), .driver_info = DEVTYPE_ITM},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
-	{USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
-	{USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
-	{USB_DEVICE(0x0afa, 0x03e8), .driver_info = DEVTYPE_DMC_TSC10},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
-	{USB_DEVICE(0x255e, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
-	{USB_DEVICE(0x595a, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
-	{USB_DEVICE(0x6615, 0x0001), .driver_info = DEVTYPE_IRTOUCH},
-	{USB_DEVICE(0x6615, 0x0012), .driver_info = DEVTYPE_IRTOUCH_HIRES},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
-	{USB_DEVICE(0x1391, 0x1000), .driver_info = DEVTYPE_IDEALTEK},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
-	{USB_DEVICE(0x0dfc, 0x0001), .driver_info = DEVTYPE_GENERAL_TOUCH},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
-	{USB_DEVICE(0x08f2, 0x007f), .driver_info = DEVTYPE_GOTOP},
-	{USB_DEVICE(0x08f2, 0x00ce), .driver_info = DEVTYPE_GOTOP},
-	{USB_DEVICE(0x08f2, 0x00f4), .driver_info = DEVTYPE_GOTOP},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
-	{USB_DEVICE(0x0f92, 0x0001), .driver_info = DEVTYPE_JASTEC},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_E2I
-	{USB_DEVICE(0x1ac7, 0x0001), .driver_info = DEVTYPE_E2I},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
-	{USB_DEVICE(0x14c8, 0x0003), .driver_info = DEVTYPE_ZYTRONIC},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
-	/* TC5UH */
-	{USB_DEVICE(0x0664, 0x0309), .driver_info = DEVTYPE_TC45USB},
-	/* TC4UM */
-	{USB_DEVICE(0x0664, 0x0306), .driver_info = DEVTYPE_TC45USB},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
-	/* data interface only */
-	{USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
-		.driver_info = DEVTYPE_NEXIO},
-	{USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
-		.driver_info = DEVTYPE_NEXIO},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ELO
-	{USB_DEVICE(0x04e7, 0x0020), .driver_info = DEVTYPE_ELO},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
-	{USB_DEVICE(0x7374, 0x0001), .driver_info = DEVTYPE_ETOUCH},
-#endif
-
-	{}
+	void (*process_pkt)(struct usbtouch_usb *usbtouch, unsigned char *pkt, int len);
 };
 
 
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info e2i_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x7fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x7fff,
+	.rept_size	= 6,
+	.init		= e2i_init,
+	.read_data	= e2i_read_data,
+};
 #endif
 
 
···
 
 static int egalax_init(struct usbtouch_usb *usbtouch)
 {
-	int ret, i;
-	unsigned char *buf;
 	struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
+	int ret, i;
 
 	/*
 	 * An eGalax diagnostic packet kicks the device into using the right
···
 	 * read later and ignored.
 	 */
 
-	buf = kmalloc(3, GFP_KERNEL);
+	u8 *buf __free(kfree) = kmalloc(3, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
···
 				      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 				      0, 0, buf, 3,
 				      USB_CTRL_SET_TIMEOUT);
-		if (ret >= 0) {
-			ret = 0;
-			break;
-		}
 		if (ret != -EPIPE)
 			break;
 	}
 
-	kfree(buf);
-
-	return ret;
+	return ret < 0 ? ret : 0;
 }
 
 static int egalax_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
···
 
 	return 0;
 }
+
+static const struct usbtouch_device_info egalax_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x07ff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x07ff,
+	.rept_size	= 16,
+	.get_pkt_len	= egalax_get_pkt_len,
+	.read_data	= egalax_read_data,
+	.init		= egalax_init,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 0;
 }
+
+static const struct usbtouch_device_info etouch_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x07ff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x07ff,
+	.rept_size	= 16,
+	.get_pkt_len	= etouch_get_pkt_len,
+	.read_data	= etouch_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info panjit_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.rept_size	= 8,
+	.read_data	= panjit_read_data,
+};
 #endif
 
 
···
 	u8 fw_rev_minor;
 };
 
-static ssize_t mtouch_firmware_rev_show(struct device *dev,
-				struct device_attribute *attr, char *output)
-{
-	struct usb_interface *intf = to_usb_interface(dev);
-	struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
-	struct mtouch_priv *priv = usbtouch->priv;
-
-	return sysfs_emit(output, "%1x.%1x\n",
-			  priv->fw_rev_major, priv->fw_rev_minor);
-}
-static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
-
-static struct attribute *mtouch_attrs[] = {
-	&dev_attr_firmware_rev.attr,
-	NULL
-};
-
-static const struct attribute_group mtouch_attr_group = {
-	.attrs = mtouch_attrs,
-};
-
 static int mtouch_get_fw_revision(struct usbtouch_usb *usbtouch)
 {
 	struct usb_device *udev = interface_to_usbdev(usbtouch->interface);
 	struct mtouch_priv *priv = usbtouch->priv;
-	u8 *buf;
 	int ret;
 
-	buf = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
+	u8 *buf __free(kfree) = kzalloc(MTOUCHUSB_REQ_CTRLLR_ID_LEN, GFP_NOIO);
 	if (!buf)
 		return -ENOMEM;
 
···
 	if (ret != MTOUCHUSB_REQ_CTRLLR_ID_LEN) {
 		dev_warn(&usbtouch->interface->dev,
 			 "Failed to read FW rev: %d\n", ret);
-		ret = ret < 0 ? ret : -EIO;
-		goto free;
+		return ret < 0 ? ret : -EIO;
 	}
 
 	priv->fw_rev_major = buf[3];
 	priv->fw_rev_minor = buf[4];
 
-	ret = 0;
-
-free:
-	kfree(buf);
-	return ret;
+	return 0;
 }
 
 static int mtouch_alloc(struct usbtouch_usb *usbtouch)
 {
 	struct mtouch_priv *priv;
-	int ret;
 
 	priv = kmalloc(sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
 	usbtouch->priv = priv;
-	ret = sysfs_create_group(&usbtouch->interface->dev.kobj,
-				 &mtouch_attr_group);
-	if (ret) {
-		kfree(usbtouch->priv);
-		usbtouch->priv = NULL;
-		return ret;
-	}
-
 	return 0;
 }
 
···
 {
 	struct mtouch_priv *priv = usbtouch->priv;
 
-	sysfs_remove_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group);
 	kfree(priv);
 }
+
+static struct usbtouch_device_info mtouch_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x4000,
+	.min_yc		= 0x0,
+	.max_yc		= 0x4000,
+	.rept_size	= 11,
+	.read_data	= mtouch_read_data,
+	.alloc		= mtouch_alloc,
+	.init		= mtouch_init,
+	.exit		= mtouch_exit,
+};
+
+static ssize_t mtouch_firmware_rev_show(struct device *dev,
+				struct device_attribute *attr, char *output)
+{
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
+	struct mtouch_priv *priv = usbtouch->priv;
+
+	return sysfs_emit(output, "%1x.%1x\n",
+			  priv->fw_rev_major, priv->fw_rev_minor);
+}
+static DEVICE_ATTR(firmware_rev, 0444, mtouch_firmware_rev_show, NULL);
+
+static struct attribute *mtouch_attrs[] = {
+	&dev_attr_firmware_rev.attr,
+	NULL
+};
+
+static bool mtouch_group_visible(struct kobject *kobj)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct usb_interface *intf = to_usb_interface(dev);
+	struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
+
+	return usbtouch->type == &mtouch_dev_info;
+}
+
+DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(mtouch);
+
+static const struct attribute_group mtouch_attr_group = {
+	.is_visible = SYSFS_GROUP_VISIBLE(mtouch),
+	.attrs = mtouch_attrs,
+};
 #endif
 
 
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info itm_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.max_press	= 0xff,
+	.rept_size	= 8,
+	.read_data	= itm_read_data,
+};
 #endif
 
 
···
 		return 3;
 	return 0;
 }
+
+static const struct usbtouch_device_info eturbo_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x07ff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x07ff,
+	.rept_size	= 8,
+	.get_pkt_len	= eturbo_get_pkt_len,
+	.read_data	= eturbo_read_data,
+};
 #endif
 
 
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info gunze_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.rept_size	= 4,
+	.read_data	= gunze_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 static int dmc_tsc10_init(struct usbtouch_usb *usbtouch)
 {
 	struct usb_device *dev = interface_to_usbdev(usbtouch->interface);
-	int ret = -ENOMEM;
-	unsigned char *buf;
+	int ret;
 
-	buf = kmalloc(2, GFP_NOIO);
+	u8 *buf __free(kfree) = kmalloc(2, GFP_NOIO);
 	if (!buf)
-		goto err_nobuf;
+		return -ENOMEM;
+
 	/* reset */
 	buf[0] = buf[1] = 0xFF;
 	ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
-	                      TSC10_CMD_RESET,
-	                      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-	                      0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
+			      TSC10_CMD_RESET,
+			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      0, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 	if (ret < 0)
-		goto err_out;
-	if (buf[0] != 0x06) {
-		ret = -ENODEV;
-		goto err_out;
-	}
+		return ret;
+
+	if (buf[0] != 0x06)
+		return -ENODEV;
 
 	/* TSC-25 data sheet specifies a delay after the RESET command */
 	msleep(150);
···
 	/* set coordinate output rate */
 	buf[0] = buf[1] = 0xFF;
 	ret = usb_control_msg(dev, usb_rcvctrlpipe (dev, 0),
-	                      TSC10_CMD_RATE,
-	                      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-	                      TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
+			      TSC10_CMD_RATE,
+			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			      TSC10_RATE_150, 0, buf, 2, USB_CTRL_SET_TIMEOUT);
 	if (ret < 0)
-		goto err_out;
-	if ((buf[0] != 0x06) && (buf[0] != 0x15 || buf[1] != 0x01)) {
-		ret = -ENODEV;
-		goto err_out;
-	}
+		return ret;
+
+	if (buf[0] != 0x06 && (buf[0] != 0x15 || buf[1] != 0x01))
+		return -ENODEV;
 
 	/* start sending data */
-	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
-	                      TSC10_CMD_DATA1,
-	                      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-	                      0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
-err_out:
-	kfree(buf);
-err_nobuf:
-	return ret;
+	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+			       TSC10_CMD_DATA1,
+			       USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			       0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 }
-
 
 static int dmc_tsc10_read_data(struct usbtouch_usb *dev, unsigned char *pkt)
 {
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info dmc_tsc10_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x03ff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x03ff,
+	.rept_size	= 5,
+	.init		= dmc_tsc10_init,
+	.read_data	= dmc_tsc10_read_data,
+};
 #endif
 
 
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info irtouch_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.rept_size	= 8,
+	.read_data	= irtouch_read_data,
+};
+
+static const struct usbtouch_device_info irtouch_hires_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x7fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x7fff,
+	.rept_size	= 8,
+	.read_data	= irtouch_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info tc45usb_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.rept_size	= 5,
+	.read_data	= tc45usb_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 		return 0;
 	}
 }
+
+static const struct usbtouch_device_info idealtek_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.rept_size	= 8,
+	.get_pkt_len	= idealtek_get_pkt_len,
+	.read_data	= idealtek_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info general_touch_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x7fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x7fff,
+	.rept_size	= 7,
+	.read_data	= general_touch_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info gotop_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x03ff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x03ff,
+	.rept_size	= 4,
+	.read_data	= gotop_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 1;
 }
+
+static const struct usbtouch_device_info jastec_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.rept_size	= 4,
+	.read_data	= jastec_read_data,
+};
 #endif
 
 /*****************************************************************************
···
 
 	return 0;
 }
+
+static const struct usbtouch_device_info zytronic_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x03ff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x03ff,
+	.rept_size	= 5,
+	.read_data	= zytronic_read_data,
+	.irq_always     = true,
+};
 #endif
 
 /*****************************************************************************
···
 	struct nexio_priv *priv = usbtouch->priv;
 	int ret = -ENOMEM;
 	int actual_len, i;
-	unsigned char *buf;
 	char *firmware_ver = NULL, *device_name = NULL;
 	int input_ep = 0, output_ep = 0;
 
···
 	if (!input_ep || !output_ep)
 		return -ENXIO;
 
-	buf = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
+	u8 *buf __free(kfree) = kmalloc(NEXIO_BUFSIZE, GFP_NOIO);
 	if (!buf)
-		goto out_buf;
+		return -ENOMEM;
 
 	/* two empty reads */
 	for (i = 0; i < 2; i++) {
···
 				   buf, NEXIO_BUFSIZE, &actual_len,
 				   NEXIO_TIMEOUT);
 		if (ret < 0)
-			goto out_buf;
+			return ret;
 	}
 
 	/* send init command */
···
 			   buf, sizeof(nexio_init_pkt), &actual_len,
 			   NEXIO_TIMEOUT);
 	if (ret < 0)
-		goto out_buf;
+		return ret;
 
 	/* read replies */
 	for (i = 0; i < 3; i++) {
···
 	usb_fill_bulk_urb(priv->ack, dev, usb_sndbulkpipe(dev, output_ep),
 			  priv->ack_buf, sizeof(nexio_ack_pkt),
 			  nexio_ack_complete, usbtouch);
-	ret = 0;
 
-out_buf:
-	kfree(buf);
-	return ret;
+	return 0;
 }
 
 static void nexio_exit(struct usbtouch_usb *usbtouch)
···
 	if (ret)
 		dev_warn(dev, "Failed to submit ACK URB: %d\n", ret);
 
-	if (!usbtouch->type->max_xc) {
-		usbtouch->type->max_xc = 2 * x_len;
+	if (!input_abs_get_max(usbtouch->input, ABS_X)) {
 		input_set_abs_params(usbtouch->input, ABS_X,
-				     0, usbtouch->type->max_xc, 0, 0);
-		usbtouch->type->max_yc = 2 * y_len;
+				     0, 2 * x_len, 0, 0);
 		input_set_abs_params(usbtouch->input, ABS_Y,
-				     0, usbtouch->type->max_yc, 0, 0);
+				     0, 2 * y_len, 0, 0);
 	}
 	/*
 	 * The device reports state of IR sensors on X and Y axes.
···
 	}
 	return 0;
 }
+
+static const struct usbtouch_device_info nexio_dev_info = {
+	.rept_size	= 1024,
+	.irq_always	= true,
+	.read_data	= nexio_read_data,
+	.alloc		= nexio_alloc,
+	.init		= nexio_init,
+	.exit		= nexio_exit,
+};
 #endif
 
 
···
 
 	return 1;
 }
-#endif
 
-
-/*****************************************************************************
- * the different device descriptors
- */
-#ifdef MULTI_PACKET
-static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
-				   unsigned char *pkt, int len);
-#endif
-
-static struct usbtouch_device_info usbtouch_dev_info[] = {
-#ifdef CONFIG_TOUCHSCREEN_USB_ELO
-	[DEVTYPE_ELO] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.max_press	= 0xff,
-		.rept_size	= 8,
-		.read_data	= elo_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
-	[DEVTYPE_EGALAX] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x07ff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x07ff,
-		.rept_size	= 16,
-		.process_pkt	= usbtouch_process_multi,
-		.get_pkt_len	= egalax_get_pkt_len,
-		.read_data	= egalax_read_data,
-		.init		= egalax_init,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
-	[DEVTYPE_PANJIT] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.rept_size	= 8,
-		.read_data	= panjit_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_3M
-	[DEVTYPE_3M] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x4000,
-		.min_yc		= 0x0,
-		.max_yc		= 0x4000,
-		.rept_size	= 11,
-		.read_data	= mtouch_read_data,
-		.alloc		= mtouch_alloc,
-		.init		= mtouch_init,
-		.exit		= mtouch_exit,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ITM
-	[DEVTYPE_ITM] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.max_press	= 0xff,
-		.rept_size	= 8,
-		.read_data	= itm_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
-	[DEVTYPE_ETURBO] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x07ff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x07ff,
-		.rept_size	= 8,
-		.process_pkt	= usbtouch_process_multi,
-		.get_pkt_len	= eturbo_get_pkt_len,
-		.read_data	= eturbo_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
-	[DEVTYPE_GUNZE] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.rept_size	= 4,
-		.read_data	= gunze_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
-	[DEVTYPE_DMC_TSC10] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x03ff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x03ff,
-		.rept_size	= 5,
-		.init		= dmc_tsc10_init,
-		.read_data	= dmc_tsc10_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
-	[DEVTYPE_IRTOUCH] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.rept_size	= 8,
-		.read_data	= irtouch_read_data,
-	},
-
-	[DEVTYPE_IRTOUCH_HIRES] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x7fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x7fff,
-		.rept_size	= 8,
-		.read_data	= irtouch_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
-	[DEVTYPE_IDEALTEK] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.rept_size	= 8,
-		.process_pkt	= usbtouch_process_multi,
-		.get_pkt_len	= idealtek_get_pkt_len,
-		.read_data	= idealtek_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
-	[DEVTYPE_GENERAL_TOUCH] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x7fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x7fff,
-		.rept_size	= 7,
-		.read_data	= general_touch_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
-	[DEVTYPE_GOTOP] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x03ff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x03ff,
-		.rept_size	= 4,
-		.read_data	= gotop_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
-	[DEVTYPE_JASTEC] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.rept_size	= 4,
-		.read_data	= jastec_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_E2I
-	[DEVTYPE_E2I] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x7fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x7fff,
-		.rept_size	= 6,
-		.init		= e2i_init,
-		.read_data	= e2i_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
-	[DEVTYPE_ZYTRONIC] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x03ff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x03ff,
-		.rept_size	= 5,
-		.read_data	= zytronic_read_data,
-		.irq_always     = true,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
-	[DEVTYPE_TC45USB] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x0fff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x0fff,
-		.rept_size	= 5,
-		.read_data	= tc45usb_read_data,
-	},
-#endif
-
-#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
-	[DEVTYPE_NEXIO] = {
-		.rept_size	= 1024,
-		.irq_always	= true,
-		.read_data	= nexio_read_data,
-		.alloc		= nexio_alloc,
-		.init		= nexio_init,
-		.exit		= nexio_exit,
-	},
-#endif
-#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
-	[DEVTYPE_ETOUCH] = {
-		.min_xc		= 0x0,
-		.max_xc		= 0x07ff,
-		.min_yc		= 0x0,
-		.max_yc		= 0x07ff,
-		.rept_size	= 16,
-		.process_pkt	= usbtouch_process_multi,
-		.get_pkt_len	= etouch_get_pkt_len,
-		.read_data	= etouch_read_data,
-	},
-#endif
+static const struct usbtouch_device_info elo_dev_info = {
+	.min_xc		= 0x0,
+	.max_xc		= 0x0fff,
+	.min_yc		= 0x0,
+	.max_yc		= 0x0fff,
+	.max_press	= 0xff,
+	.rept_size	= 8,
+	.read_data	= elo_read_data,
 };
+#endif
 
 
 /*****************************************************************************
···
 static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
                                  unsigned char *pkt, int len)
 {
-	struct usbtouch_device_info *type = usbtouch->type;
+	const struct usbtouch_device_info *type = usbtouch->type;
 
 	if (!type->read_data(usbtouch, pkt))
-			return;
+		return;
 
 	input_report_key(usbtouch->input, BTN_TOUCH, usbtouch->touch);
 
···
 	usbtouch->buf_len = 0;
 	return;
 }
+#else
+static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
+                                   unsigned char *pkt, int len)
+{
+	dev_WARN_ONCE(&usbtouch->interface->dev, 1,
+		      "Protocol has ->get_pkt_len() without #define MULTI_PACKET");
+}
 #endif
-
 
 static void usbtouch_irq(struct urb *urb)
 {
···
 		goto exit;
 	}
 
-	usbtouch->type->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
+	usbtouch->process_pkt(usbtouch, usbtouch->data, urb->actual_length);
 
 exit:
 	usb_mark_last_busy(interface_to_usbdev(usbtouch->interface));
···
 	if (retval)
 		dev_err(dev, "%s - usb_submit_urb failed with result: %d\n",
 			__func__, retval);
+}
+
+static int usbtouch_start_io(struct usbtouch_usb *usbtouch)
+{
+	guard(mutex)(&usbtouch->pm_mutex);
+
+	if (!usbtouch->type->irq_always)
+		if (usb_submit_urb(usbtouch->irq, GFP_KERNEL))
+			return -EIO;
+
+	usbtouch->interface->needs_remote_wakeup = 1;
+	usbtouch->is_open = true;
+
+	return 0;
 }
 
 static int usbtouch_open(struct input_dev *input)
···
 	usbtouch->irq->dev = interface_to_usbdev(usbtouch->interface);
 
 	r = usb_autopm_get_interface(usbtouch->interface) ? -EIO : 0;
-	if (r < 0)
-		goto out;
+	if (r)
+		return r;
 
-	mutex_lock(&usbtouch->pm_mutex);
-	if (!usbtouch->type->irq_always) {
-		if (usb_submit_urb(usbtouch->irq, GFP_KERNEL)) {
-			r = -EIO;
-			goto out_put;
-		}
-	}
+	r = usbtouch_start_io(usbtouch);
 
-	usbtouch->interface->needs_remote_wakeup = 1;
-	usbtouch->is_open = true;
-out_put:
-	mutex_unlock(&usbtouch->pm_mutex);
 	usb_autopm_put_interface(usbtouch->interface);
-out:
 	return r;
 }
 
···
 	struct usbtouch_usb *usbtouch = input_get_drvdata(input);
 	int r;
 
-	mutex_lock(&usbtouch->pm_mutex);
-	if (!usbtouch->type->irq_always)
-		usb_kill_urb(usbtouch->irq);
-	usbtouch->is_open = false;
-	mutex_unlock(&usbtouch->pm_mutex);
+	scoped_guard(mutex, &usbtouch->pm_mutex) {
+		if (!usbtouch->type->irq_always)
+			usb_kill_urb(usbtouch->irq);
+		usbtouch->is_open = false;
+	}
 
 	r = usb_autopm_get_interface(usbtouch->interface);
 	usbtouch->interface->needs_remote_wakeup = 0;
···
 		usb_autopm_put_interface(usbtouch->interface);
 }
 
-static int usbtouch_suspend
-(struct usb_interface *intf, pm_message_t message)
+static int usbtouch_suspend(struct usb_interface *intf, pm_message_t message)
 {
 	struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
 
···
 static int usbtouch_resume(struct usb_interface *intf)
 {
 	struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
-	int result = 0;
 
-	mutex_lock(&usbtouch->pm_mutex);
+	guard(mutex)(&usbtouch->pm_mutex);
+
 	if (usbtouch->is_open || usbtouch->type->irq_always)
-		result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
-	mutex_unlock(&usbtouch->pm_mutex);
+		return usb_submit_urb(usbtouch->irq, GFP_NOIO);
 
-	return result;
+	return 0;
 }
 
 static int usbtouch_reset_resume(struct usb_interface *intf)
 {
 	struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
-	int err = 0;
+	int err;
 
 	/* reinit the device */
 	if (usbtouch->type->init) {
···
 	}
 
 	/* restart IO if needed */
-	mutex_lock(&usbtouch->pm_mutex);
-	if (usbtouch->is_open)
-		err = usb_submit_urb(usbtouch->irq, GFP_NOIO);
-	mutex_unlock(&usbtouch->pm_mutex);
+	guard(mutex)(&usbtouch->pm_mutex);
 
-	return err;
+	if (usbtouch->is_open)
+		return usb_submit_urb(usbtouch->irq, GFP_NOIO);
+
+	return 0;
 }
 
 static void usbtouch_free_buffers(struct usb_device *udev,
···
 	struct input_dev *input_dev;
 	struct usb_endpoint_descriptor *endpoint;
 	struct usb_device *udev = interface_to_usbdev(intf);
-	struct usbtouch_device_info *type;
+	const struct usbtouch_device_info *type;
 	int err = -ENOMEM;
 
 	/* some devices are ignored */
-	if (id->driver_info == DEVTYPE_IGNORE)
-		return -ENODEV;
-
-	if (id->driver_info >= ARRAY_SIZE(usbtouch_dev_info))
+	type = (const struct usbtouch_device_info *)id->driver_info;
+	if (!type)
 		return -ENODEV;
 
 	endpoint = usbtouch_get_input_endpoint(intf->cur_altsetting);
···
 		goto out_free;
 
 	mutex_init(&usbtouch->pm_mutex);
-
-	type = &usbtouch_dev_info[id->driver_info];
 	usbtouch->type = type;
-	if (!type->process_pkt)
-		type->process_pkt = usbtouch_process_pkt;
 
 	usbtouch->data_size = type->rept_size;
 	if (type->get_pkt_len) {
···
 		usbtouch->buffer = kmalloc(type->rept_size, GFP_KERNEL);
 		if (!usbtouch->buffer)
 			goto out_free_buffers;
+		usbtouch->process_pkt = usbtouch_process_multi;
+	} else {
+		usbtouch->process_pkt = usbtouch_process_pkt;
 	}
 
 	usbtouch->irq = usb_alloc_urb(0, GFP_KERNEL);
···
 	kfree(usbtouch);
 }
 
+static const struct attribute_group *usbtouch_groups[] = {
+#ifdef CONFIG_TOUCHSCREEN_USB_3M
+	&mtouch_attr_group,
+#endif
+	NULL
+};
+
+static const struct usb_device_id usbtouch_devices[] = {
+#ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
+	/* ignore the HID capable devices, handled by usbhid */
+	{ USB_DEVICE_INTERFACE_CLASS(0x0eef, 0x0001, USB_INTERFACE_CLASS_HID),
+		.driver_info = 0 },
+	{ USB_DEVICE_INTERFACE_CLASS(0x0eef, 0x0002, USB_INTERFACE_CLASS_HID),
+		.driver_info = 0 },
+
+	/* normal device IDs */
+	{ USB_DEVICE(0x3823, 0x0001),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+	{ USB_DEVICE(0x3823, 0x0002),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+	{ USB_DEVICE(0x0123, 0x0001),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+	{ USB_DEVICE(0x0eef, 0x0001),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+	{ USB_DEVICE(0x0eef, 0x0002),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+	{ USB_DEVICE(0x1234, 0x0001),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+	{ USB_DEVICE(0x1234, 0x0002),
+		.driver_info = (kernel_ulong_t)&egalax_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_PANJIT
+	{ USB_DEVICE(0x134c, 0x0001),
+		.driver_info = (kernel_ulong_t)&panjit_dev_info },
+	{ USB_DEVICE(0x134c, 0x0002),
+		.driver_info = (kernel_ulong_t)&panjit_dev_info },
+	{ USB_DEVICE(0x134c, 0x0003),
+		.driver_info = (kernel_ulong_t)&panjit_dev_info },
+	{ USB_DEVICE(0x134c, 0x0004),
+		.driver_info = (kernel_ulong_t)&panjit_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_3M
+	{ USB_DEVICE(0x0596, 0x0001),
+		.driver_info = (kernel_ulong_t)&mtouch_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_ITM
+	{ USB_DEVICE(0x0403, 0xf9e9),
+		.driver_info = (kernel_ulong_t)&itm_dev_info },
+	{ USB_DEVICE(0x16e3, 0xf9e9),
+		.driver_info = (kernel_ulong_t)&itm_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_ETURBO
+	{ USB_DEVICE(0x1234, 0x5678),
+		.driver_info = (kernel_ulong_t)&eturbo_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_GUNZE
+	{ USB_DEVICE(0x0637, 0x0001),
+		.driver_info = (kernel_ulong_t)&gunze_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_DMC_TSC10
+	{ USB_DEVICE(0x0afa, 0x03e8),
+		.driver_info = (kernel_ulong_t)&dmc_tsc10_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_IRTOUCH
+	{ USB_DEVICE(0x255e, 0x0001),
+		.driver_info = (kernel_ulong_t)&irtouch_dev_info },
+	{ USB_DEVICE(0x595a, 0x0001),
+		.driver_info = (kernel_ulong_t)&irtouch_dev_info },
+	{ USB_DEVICE(0x6615, 0x0001),
+		.driver_info = (kernel_ulong_t)&irtouch_dev_info },
+	{ USB_DEVICE(0x6615, 0x0012),
+		.driver_info = (kernel_ulong_t)&irtouch_hires_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_IDEALTEK
+	{ USB_DEVICE(0x1391, 0x1000),
+		.driver_info = (kernel_ulong_t)&idealtek_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_GENERAL_TOUCH
+	{ USB_DEVICE(0x0dfc, 0x0001),
+		.driver_info = (kernel_ulong_t)&general_touch_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_GOTOP
+	{ USB_DEVICE(0x08f2, 0x007f),
+		.driver_info = (kernel_ulong_t)&gotop_dev_info },
+	{ USB_DEVICE(0x08f2, 0x00ce),
+		.driver_info = (kernel_ulong_t)&gotop_dev_info },
+	{ USB_DEVICE(0x08f2, 0x00f4),
+		.driver_info = (kernel_ulong_t)&gotop_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_JASTEC
+	{ USB_DEVICE(0x0f92, 0x0001),
+		.driver_info = (kernel_ulong_t)&jastec_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_E2I
+	{ USB_DEVICE(0x1ac7, 0x0001),
+		.driver_info = (kernel_ulong_t)&e2i_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_ZYTRONIC
+	{ USB_DEVICE(0x14c8, 0x0003),
+		.driver_info = (kernel_ulong_t)&zytronic_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_ETT_TC45USB
+	/* TC5UH */
+	{ USB_DEVICE(0x0664, 0x0309),
+		.driver_info = (kernel_ulong_t)&tc45usb_dev_info },
+	/* TC4UM */
+	{ USB_DEVICE(0x0664, 0x0306),
+		.driver_info = (kernel_ulong_t)&tc45usb_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_NEXIO
+	/* data interface only */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x10f0, 0x2002, 0x0a, 0x00, 0x00),
+		.driver_info = (kernel_ulong_t)&nexio_dev_info },
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x1870, 0x0001, 0x0a, 0x00, 0x00),
+		.driver_info = (kernel_ulong_t)&nexio_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_ELO
+	{ USB_DEVICE(0x04e7, 0x0020),
+		.driver_info = (kernel_ulong_t)&elo_dev_info },
+#endif
+
+#ifdef CONFIG_TOUCHSCREEN_USB_EASYTOUCH
+	{ USB_DEVICE(0x7374, 0x0001),
+		.driver_info = (kernel_ulong_t)&etouch_dev_info },
+#endif
+
+	{ }
+};
 MODULE_DEVICE_TABLE(usb, usbtouch_devices);
 
 static struct usb_driver usbtouch_driver = {
···
 	.resume		= usbtouch_resume,
 	.reset_resume	= usbtouch_reset_resume,
 	.id_table	= usbtouch_devices,
+	.dev_groups	= usbtouch_groups,
 	.supports_autosuspend = 1,
 };
 

drivers/input/touchscreen/zforce_ts.c

···
  * Author: Pieter Truter<[e-mail]>
  */
 
-#include <linux/module.h>
-#include <linux/hrtimer.h>
-#include <linux/slab.h>
-#include <linux/input.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
 #include <linux/delay.h>
-#include <linux/gpio/consumer.h>
 #include <linux/device.h>
-#include <linux/sysfs.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
 #include <linux/input/mt.h>
 #include <linux/input/touchscreen.h>
-#include <linux/platform_data/zforce_ts.h>
-#include <linux/regulator/consumer.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
 #include <linux/of.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
 
 #define WAIT_TIMEOUT		msecs_to_jiffies(1000)
 
···
  * @suspending		in the process of going to suspend (don't emit wakeup
  *			events for commands executed to suspend the device)
  * @suspended		device suspended
- * @access_mutex	serialize i2c-access, to keep multipart reads together
  * @command_done	completion to wait for the command result
- * @command_mutex	serialize commands sent to the ic
  * @command_waiting	the id of the command that is currently waiting
  *			for a result
  * @command_result	returned result of the command
···
 	struct i2c_client	*client;
 	struct input_dev	*input;
 	struct touchscreen_properties prop;
-	const struct zforce_ts_platdata *pdata;
 	char			phys[32];
-
-	struct regulator	*reg_vdd;
 
 	struct gpio_desc	*gpio_int;
 	struct gpio_desc	*gpio_rst;
···
 	u16			version_build;
 	u16			version_rev;
 
-	struct mutex		access_mutex;
-
 	struct completion	command_done;
-	struct mutex		command_mutex;
 	int			command_waiting;
 	int			command_result;
 };
···
 	buf[1] = 1; /* data size, command only */
 	buf[2] = cmd;
 
-	mutex_lock(&ts->access_mutex);
 	ret = i2c_master_send(client, &buf[0], ARRAY_SIZE(buf));
-	mutex_unlock(&ts->access_mutex);
 	if (ret < 0) {
 		dev_err(&client->dev, "i2c send data request error: %d\n", ret);
 		return ret;
···
 	return 0;
 }
 
-static void zforce_reset_assert(struct zforce_ts *ts)
-{
-	gpiod_set_value_cansleep(ts->gpio_rst, 1);
-}
-
-static void zforce_reset_deassert(struct zforce_ts *ts)
-{
-	gpiod_set_value_cansleep(ts->gpio_rst, 0);
-}
-
 static int zforce_send_wait(struct zforce_ts *ts, const char *buf, int len)
 {
 	struct i2c_client *client = ts->client;
 	int ret;
-
-	ret = mutex_trylock(&ts->command_mutex);
-	if (!ret) {
-		dev_err(&client->dev, "already waiting for a command\n");
-		return -EBUSY;
-	}
 
 	dev_dbg(&client->dev, "sending %d bytes for command 0x%x\n",
 		buf[1], buf[2]);
 
 	ts->command_waiting = buf[2];
 
-	mutex_lock(&ts->access_mutex);
 	ret = i2c_master_send(client, buf, len);
-	mutex_unlock(&ts->access_mutex);
 	if (ret < 0) {
 		dev_err(&client->dev, "i2c send data request error: %d\n", ret);
-		goto unlock;
+		return ret;
 	}
 
 	dev_dbg(&client->dev, "waiting for result for command 0x%x\n", buf[2]);
 
-	if (wait_for_completion_timeout(&ts->command_done, WAIT_TIMEOUT) == 0) {
-		ret = -ETIME;
-		goto unlock;
-	}
+	if (wait_for_completion_timeout(&ts->command_done, WAIT_TIMEOUT) == 0)
+		return -ETIME;
 
 	ret = ts->command_result;
-
-unlock:
-	mutex_unlock(&ts->command_mutex);
-	return ret;
+	return 0;
 }
 
 static int zforce_command_wait(struct zforce_ts *ts, u8 cmd)
 {
 	struct i2c_client *client = ts->client;
 	char buf[3];
-	int ret;
+	int error;
 
 	dev_dbg(&client->dev, "%s: 0x%x\n", __func__, cmd);
 
···
 	buf[1] = 1; /* data size, command only */
 	buf[2] = cmd;
 
-	ret = zforce_send_wait(ts, &buf[0], ARRAY_SIZE(buf));
-	if (ret < 0) {
-		dev_err(&client->dev, "i2c send data request error: %d\n", ret);
-		return ret;
+	error = zforce_send_wait(ts, &buf[0], ARRAY_SIZE(buf));
+	if (error) {
+		dev_err(&client->dev, "i2c send data request error: %d\n",
+			error);
+		return error;
 	}
 
 	return 0;
···
 static int zforce_start(struct zforce_ts *ts)
 {
 	struct i2c_client *client = ts->client;
-	int ret;
+	int error;
 
 	dev_dbg(&client->dev, "starting device\n");
 
-	ret = zforce_command_wait(ts, COMMAND_INITIALIZE);
-	if (ret) {
-		dev_err(&client->dev, "Unable to initialize, %d\n", ret);
-		return ret;
+	error = zforce_command_wait(ts, COMMAND_INITIALIZE);
+	if (error) {
+		dev_err(&client->dev, "Unable to initialize, %d\n", error);
+		return error;
 	}
 
-	ret = zforce_resolution(ts, ts->prop.max_x, ts->prop.max_y);
-	if (ret) {
-		dev_err(&client->dev, "Unable to set resolution, %d\n", ret);
-		goto error;
+	error = zforce_resolution(ts, ts->prop.max_x, ts->prop.max_y);
+	if (error) {
+		dev_err(&client->dev, "Unable to set resolution, %d\n", error);
+		goto err_deactivate;
 	}
 
-	ret = zforce_scan_frequency(ts, 10, 50, 50);
-	if (ret) {
+	error = zforce_scan_frequency(ts, 10, 50, 50);
+	if (error) {
 		dev_err(&client->dev, "Unable to set scan frequency, %d\n",
-			ret);
-		goto error;
+			error);
+		goto err_deactivate;
 	}
 
-	ret = zforce_setconfig(ts, SETCONFIG_DUALTOUCH);
-	if (ret) {
+	error = zforce_setconfig(ts, SETCONFIG_DUALTOUCH);
+	if (error) {
 		dev_err(&client->dev, "Unable to set config\n");
-		goto error;
+		goto err_deactivate;
 	}
 
 	/* start sending touch events */
-	ret = zforce_command(ts, COMMAND_DATAREQUEST);
-	if (ret) {
+	error = zforce_command(ts, COMMAND_DATAREQUEST);
+	if (error) {
 		dev_err(&client->dev, "Unable to request data\n");
-		goto error;
+		goto err_deactivate;
 	}
 
 	/*
···
 
 	return 0;
 
-error:
+err_deactivate:
 	zforce_command_wait(ts, COMMAND_DEACTIVATE);
-	return ret;
+	return error;
 }
 
 static int zforce_stop(struct zforce_ts *ts)
 {
 	struct i2c_client *client = ts->client;
-	int ret;
+	int error;
 
 	dev_dbg(&client->dev, "stopping device\n");
 
 	/* Deactivates touch sensing and puts the device into sleep. */
-	ret = zforce_command_wait(ts, COMMAND_DEACTIVATE);
-	if (ret != 0) {
+	error = zforce_command_wait(ts, COMMAND_DEACTIVATE);
+	if (error) {
 		dev_err(&client->dev, "could not deactivate device, %d\n",
-			ret);
-		return ret;
+			error);
+		return error;
 	}
 
 	return 0;
···
 	struct i2c_client *client = ts->client;
 	struct zforce_point point;
 	int count, i, num = 0;
+	u8 *p;
 
 	count = payload[0];
 	if (count > ZFORCE_REPORT_POINTS) {
···
 	}
 
 	for (i = 0; i < count; i++) {
-		point.coord_x =
-			payload[9 * i + 2] << 8 | payload[9 * i + 1];
-		point.coord_y =
-			payload[9 * i + 4] << 8 | payload[9 * i + 3];
+		p = &payload[i * 9 + 1];
+
+		point.coord_x = get_unaligned_le16(&p[0]);
+		point.coord_y = get_unaligned_le16(&p[2]);
 
 		if (point.coord_x > ts->prop.max_x ||
 		    point.coord_y > ts->prop.max_y) {
···
 			point.coord_x = point.coord_y = 0;
 		}
 
-		point.state = payload[9 * i + 5] & 0x0f;
-		point.id = (payload[9 * i + 5] & 0xf0) >> 4;
+		point.state = p[4] & 0x0f;
+		point.id = (p[4] & 0xf0) >> 4;
 
 		/* determine touch major, minor and orientation */
-		point.area_major = max(payload[9 * i + 6],
-					  payload[9 * i + 7]);
-		point.area_minor = min(payload[9 * i + 6],
-					  payload[9 * i + 7]);
-		point.orientation = payload[9 * i + 6] > payload[9 * i + 7];
+		point.area_major = max(p[5], p[6]);
+		point.area_minor = min(p[5], p[6]);
+		point.orientation = p[5] > p[6];
 
-		point.pressure = payload[9 * i + 8];
-		point.prblty = payload[9 * i + 9];
+		point.pressure = p[7];
+		point.prblty = p[8];
 
 		dev_dbg(&client->dev,
 			"point %d/%d: state %d, id %d, pressure %d, prblty %d, x %d, y %d, amajor %d, aminor %d, ori %d\n",
···
 		/* the zforce id starts with "1", so needs to be decreased */
 		input_mt_slot(ts->input, point.id - 1);
 
-		input_mt_report_slot_state(ts->input, MT_TOOL_FINGER,
-						point.state != STATE_UP);
-
-		if (point.state != STATE_UP) {
+		if (input_mt_report_slot_state(ts->input, MT_TOOL_FINGER,
+					       point.state != STATE_UP)) {
 			touchscreen_report_pos(ts->input, &ts->prop,
 					       point.coord_x, point.coord_y,
 					       true);
···
 	struct i2c_client *client = ts->client;
 	int ret;
 
-	mutex_lock(&ts->access_mutex);
-
 	/* read 2 byte message header */
 	ret = i2c_master_recv(client, buf, 2);
 	if (ret < 0) {
 		dev_err(&client->dev, "error reading header: %d\n", ret);
-		goto unlock;
+		return ret;
 	}
 
 	if (buf[PAYLOAD_HEADER] != FRAME_START) {
 		dev_err(&client->dev, "invalid frame start: %d\n", buf[0]);
-		ret = -EIO;
-		goto unlock;
+		return -EIO;
 	}
 
 	if (buf[PAYLOAD_LENGTH] == 0) {
 		dev_err(&client->dev, "invalid payload length: %d\n",
 			buf[PAYLOAD_LENGTH]);
-		ret = -EIO;
-		goto unlock;
+		return -EIO;
 	}
 
 	/* read the message */
 	ret = i2c_master_recv(client, &buf[PAYLOAD_BODY], buf[PAYLOAD_LENGTH]);
 	if (ret < 0) {
 		dev_err(&client->dev, "error reading payload: %d\n", ret);
-		goto unlock;
+		return ret;
 	}
 
 	dev_dbg(&client->dev, "read %d bytes for response command 0x%x\n",
 		buf[PAYLOAD_LENGTH], buf[PAYLOAD_BODY]);
 
-unlock:
-	mutex_unlock(&ts->access_mutex);
-	return ret;
+	return 0;
 }
 
 static void zforce_complete(struct zforce_ts *ts, int cmd, int result)
···
 {
 	struct zforce_ts *ts = dev_id;
 	struct i2c_client *client = ts->client;
-	int ret;
+	int error;
 	u8 payload_buffer[FRAME_MAXSIZE];
 	u8 *payload;
+	bool suspending;
 
 	/*
 	 * When still suspended, return.
···
 	dev_dbg(&client->dev, "handling interrupt\n");
 
 	/* Don't emit wakeup events from commands run by zforce_suspend */
-	if (!ts->suspending && device_may_wakeup(&client->dev))
+	suspending = READ_ONCE(ts->suspending);
+	if (!suspending && device_may_wakeup(&client->dev))
 		pm_stay_awake(&client->dev);
 
 	/*
···
 	 *    no IRQ any more)
 	 */
 	do {
-		ret = zforce_read_packet(ts, payload_buffer);
-		if (ret < 0) {
+		error = zforce_read_packet(ts, payload_buffer);
+		if (error) {
 			dev_err(&client->dev,
-				"could not read packet, ret: %d\n", ret);
+				"could not read packet, ret: %d\n", error);
 			break;
 		}
 
···
 			 * Always report touch-events received while
 			 * suspending, when being a wakeup source
 			 */
-			if (ts->suspending && device_may_wakeup(&client->dev))
+			if (suspending && device_may_wakeup(&client->dev))
 				pm_wakeup_event(&client->dev, 500);
 			zforce_touch_event(ts, &payload[RESPONSE_DATA]);
 			break;
···
 			 * Version Payload Results
 			 * [2:major] [2:minor] [2:build] [2:rev]
 			 */
-			ts->version_major = (payload[RESPONSE_DATA + 1] << 8) |
-						payload[RESPONSE_DATA];
-			ts->version_minor = (payload[RESPONSE_DATA + 3] << 8) |
-						payload[RESPONSE_DATA + 2];
-			ts->version_build = (payload[RESPONSE_DATA + 5] << 8) |
-						payload[RESPONSE_DATA + 4];
-			ts->version_rev   = (payload[RESPONSE_DATA + 7] << 8) |
-						payload[RESPONSE_DATA + 6];
+			ts->version_major =
+				get_unaligned_le16(&payload[RESPONSE_DATA]);
+			ts->version_minor =
+				get_unaligned_le16(&payload[RESPONSE_DATA + 2]);
+			ts->version_build =
+				get_unaligned_le16(&payload[RESPONSE_DATA + 4]);
+			ts->version_rev =
+				get_unaligned_le16(&payload[RESPONSE_DATA + 6]);
+
 			dev_dbg(&ts->client->dev,
 				"Firmware Version %04x:%04x %04x:%04x\n",
 				ts->version_major, ts->version_minor,
···
 		}
 	} while (gpiod_get_value_cansleep(ts->gpio_int));
 
-	if (!ts->suspending && device_may_wakeup(&client->dev))
+	if (!suspending && device_may_wakeup(&client->dev))
 		pm_relax(&client->dev);
 
 	dev_dbg(&client->dev, "finished interrupt\n");
···
 {
 	struct zforce_ts *ts = input_get_drvdata(dev);
 	struct i2c_client *client = ts->client;
-	int ret;
+	int error;
 
-	ret = zforce_stop(ts);
-	if (ret)
+	error = zforce_stop(ts);
+	if (error)
 		dev_warn(&client->dev, "stopping zforce failed\n");
-
-	return;
 }
 
-static int zforce_suspend(struct device *dev)
+static int __zforce_suspend(struct zforce_ts *ts)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct zforce_ts *ts = i2c_get_clientdata(client);
+	struct i2c_client *client = ts->client;
 	struct input_dev *input = ts->input;
-	int ret = 0;
+	int error;
 
-	mutex_lock(&input->mutex);
-	ts->suspending = true;
+	guard(mutex)(&input->mutex);
 
 	/*
 	 * When configured as a wakeup source device should always wake
···
 
 		/* Need to start device, if not open, to be a wakeup source. */
 		if (!input_device_enabled(input)) {
-			ret = zforce_start(ts);
-			if (ret)
-				goto unlock;
+			error = zforce_start(ts);
+			if (error)
+				return error;
 		}
 
 		enable_irq_wake(client->irq);
···
 		dev_dbg(&client->dev,
 			"suspend without being a wakeup source\n");
 
-		ret = zforce_stop(ts);
-		if (ret)
-			goto unlock;
+		error = zforce_stop(ts);
+		if (error)
+			return error;
 
 		disable_irq(client->irq);
 	}
 
 	ts->suspended = true;
+	return 0;
+}
 
-unlock:
-	ts->suspending = false;
-	mutex_unlock(&input->mutex);
+static int zforce_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct zforce_ts *ts = i2c_get_clientdata(client);
+	int ret;
+
+	WRITE_ONCE(ts->suspending, true);
+	smp_mb();
+
+	ret = __zforce_suspend(ts);
+
+	smp_mb();
+	WRITE_ONCE(ts->suspending, false);
 
 	return ret;
 }
···
 	struct i2c_client *client = to_i2c_client(dev);
 	struct zforce_ts *ts = i2c_get_clientdata(client);
 	struct input_dev *input = ts->input;
-	int ret = 0;
+	int error;
 
-	mutex_lock(&input->mutex);
+	guard(mutex)(&input->mutex);
 
 	ts->suspended = false;
 
···
 
 		/* need to stop device if it was not open on suspend */
 		if (!input_device_enabled(input)) {
-			ret = zforce_stop(ts);
-			if (ret)
-				goto unlock;
+			error = zforce_stop(ts);
+			if (error)
+				return error;
 		}
 	} else if (input_device_enabled(input)) {
 		dev_dbg(&client->dev, "resume without being a wakeup source\n");
 
 		enable_irq(client->irq);
 
-		ret = zforce_start(ts);
-		if (ret < 0)
-			goto unlock;
+		error = zforce_start(ts);
+		if (error)
+			return error;
 	}
 
-unlock:
-	mutex_unlock(&input->mutex);
-
-	return ret;
+	return 0;
 }
 
 static DEFINE_SIMPLE_DEV_PM_OPS(zforce_pm_ops, zforce_suspend, zforce_resume);
···
 {
 	struct zforce_ts *ts = data;
 
-	zforce_reset_assert(ts);
-
+	gpiod_set_value_cansleep(ts->gpio_rst, 1);
 	udelay(10);
-
-	if (!IS_ERR(ts->reg_vdd))
-		regulator_disable(ts->reg_vdd);
 }
 
-static struct zforce_ts_platdata *zforce_parse_dt(struct device *dev)
+static void zforce_ts_parse_legacy_properties(struct zforce_ts *ts)
 {
-	struct zforce_ts_platdata *pdata;
-	struct device_node *np = dev->of_node;
+	u32 x_max = 0;
+	u32 y_max = 0;
 
-	if (!np)
-		return ERR_PTR(-ENOENT);
+	device_property_read_u32(&ts->client->dev, "x-size", &x_max);
+	input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, x_max, 0, 0);
 
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata) {
-		dev_err(dev, "failed to allocate platform data\n");
-		return ERR_PTR(-ENOMEM);
-	}
-
-	of_property_read_u32(np, "x-size", &pdata->x_max);
-	of_property_read_u32(np, "y-size", &pdata->y_max);
-
-	return pdata;
+	device_property_read_u32(&ts->client->dev, "y-size", &y_max);
+	input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, y_max, 0, 0);
 }
 
 static int zforce_probe(struct i2c_client *client)
 {
-	const struct zforce_ts_platdata *pdata = dev_get_platdata(&client->dev);
 	struct zforce_ts *ts;
 	struct input_dev *input_dev;
-	int ret;
-
-	if (!pdata) {
-		pdata = zforce_parse_dt(&client->dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-	}
+	int error;
 
 	ts = devm_kzalloc(&client->dev, sizeof(struct zforce_ts), GFP_KERNEL);
 	if (!ts)
···
 
 	ts->gpio_rst = devm_gpiod_get_optional(&client->dev, "reset",
 					       GPIOD_OUT_HIGH);
-	if (IS_ERR(ts->gpio_rst)) {
-		ret = PTR_ERR(ts->gpio_rst);
-		dev_err(&client->dev,
-			"failed to request reset GPIO: %d\n", ret);
-		return ret;
-	}
+	error = PTR_ERR_OR_ZERO(ts->gpio_rst);
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "failed to request reset GPIO\n");
 
 	if (ts->gpio_rst) {
 		ts->gpio_int = devm_gpiod_get_optional(&client->dev, "irq",
 						       GPIOD_IN);
-		if (IS_ERR(ts->gpio_int)) {
-			ret = PTR_ERR(ts->gpio_int);
-			dev_err(&client->dev,
-				"failed to request interrupt GPIO: %d\n", ret);
-			return ret;
-		}
+		error = PTR_ERR_OR_ZERO(ts->gpio_int);
+		if (error)
+			return dev_err_probe(&client->dev, error,
+					     "failed to request interrupt GPIO\n");
 	} else {
 		/*
 		 * Deprecated GPIO handling for compatibility
···
 		/* INT GPIO */
 		ts->gpio_int = devm_gpiod_get_index(&client->dev, NULL, 0,
 						    GPIOD_IN);
-		if (IS_ERR(ts->gpio_int)) {
-			ret = PTR_ERR(ts->gpio_int);
-			dev_err(&client->dev,
-				"failed to request interrupt GPIO: %d\n", ret);
-			return ret;
-		}
+
+		error = PTR_ERR_OR_ZERO(ts->gpio_int);
+		if (error)
+			return dev_err_probe(&client->dev, error,
+					     "failed to request interrupt GPIO\n");
 
 		/* RST GPIO */
 		ts->gpio_rst = devm_gpiod_get_index(&client->dev, NULL, 1,
 					    GPIOD_OUT_HIGH);
-		if (IS_ERR(ts->gpio_rst)) {
-			ret = PTR_ERR(ts->gpio_rst);
-			dev_err(&client->dev,
-				"failed to request reset GPIO: %d\n", ret);
-			return ret;
-		}
+		error = PTR_ERR_OR_ZERO(ts->gpio_rst);
+		if (error)
+			return dev_err_probe(&client->dev, error,
+					     "failed to request reset GPIO\n");
 	}
 
-	ts->reg_vdd = devm_regulator_get_optional(&client->dev, "vdd");
-	if (IS_ERR(ts->reg_vdd)) {
-		ret = PTR_ERR(ts->reg_vdd);
-		if (ret == -EPROBE_DEFER)
-			return ret;
-	} else {
-		ret = regulator_enable(ts->reg_vdd);
-		if (ret)
-			return ret;
+	error = devm_regulator_get_enable(&client->dev, "vdd");
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "failed to request vdd supply\n");
 
-		/*
-		 * according to datasheet add 100us grace time after regular
-		 * regulator enable delay.
-		 */
-		udelay(100);
-	}
+	/*
+	 * According to datasheet add 100us grace time after regular
+	 * regulator enable delay.
+	 */
+	usleep_range(100, 200);
 
-	ret = devm_add_action(&client->dev, zforce_reset, ts);
-	if (ret) {
-		dev_err(&client->dev, "failed to register reset action, %d\n",
-			ret);
-
-		/* hereafter the regulator will be disabled by the action */
-		if (!IS_ERR(ts->reg_vdd))
-			regulator_disable(ts->reg_vdd);
-
-		return ret;
-	}
+	error = devm_add_action_or_reset(&client->dev, zforce_reset, ts);
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "failed to register reset action\n");
 
 	snprintf(ts->phys, sizeof(ts->phys),
 		 "%s/input0", dev_name(&client->dev));
 
 	input_dev = devm_input_allocate_device(&client->dev);
-	if (!input_dev) {
-		dev_err(&client->dev, "could not allocate input device\n");
-		return -ENOMEM;
-	}
+	if (!input_dev)
+		return dev_err_probe(&client->dev, -ENOMEM,
+				     "could not allocate input device\n");
 
-	mutex_init(&ts->access_mutex);
-	mutex_init(&ts->command_mutex);
-
-	ts->pdata = pdata;
 	ts->client = client;
 	ts->input = input_dev;
 
···
 	input_dev->open = zforce_input_open;
 	input_dev->close = zforce_input_close;
 
-	__set_bit(EV_KEY, input_dev->evbit);
-	__set_bit(EV_SYN, input_dev->evbit);
-	__set_bit(EV_ABS, input_dev->evbit);
-
-	/* For multi touch */
-	input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,
-			     pdata->x_max, 0, 0);
-	input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,
-			     pdata->y_max, 0, 0);
-
+	zforce_ts_parse_legacy_properties(ts);
 	touchscreen_parse_properties(input_dev, true, &ts->prop);
-	if (ts->prop.max_x == 0 || ts->prop.max_y == 0) {
-		dev_err(&client->dev, "no size specified\n");
-		return -EINVAL;
-	}
+	if (ts->prop.max_x == 0 || ts->prop.max_y == 0)
+		return dev_err_probe(&client->dev, -EINVAL, "no size specified");
 
 	input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0,
 			     ZFORCE_MAX_AREA, 0, 0);
 	input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0,
 			     ZFORCE_MAX_AREA, 0, 0);
 	input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
-	input_mt_init_slots(input_dev, ZFORCE_REPORT_POINTS, INPUT_MT_DIRECT);
+
+	error = input_mt_init_slots(input_dev, ZFORCE_REPORT_POINTS,
+				  INPUT_MT_DIRECT);
+	if (error)
+		return error;
 
 	input_set_drvdata(ts->input, ts);
 
···
 	 * Therefore we can trigger the interrupt anytime it is low and do
 	 * not need to limit it to the interrupt edge.
 	 */
-	ret = devm_request_threaded_irq(&client->dev, client->irq,
-					zforce_irq, zforce_irq_thread,
-					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-					input_dev->name, ts);
-	if (ret) {
-		dev_err(&client->dev, "irq %d request failed\n", client->irq);
-		return ret;
-	}
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  zforce_irq, zforce_irq_thread,
+					  IRQF_ONESHOT, input_dev->name, ts);
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "irq %d request failed\n", client->irq);
 
 	i2c_set_clientdata(client, ts);
 
 	/* let the controller boot */
-	zforce_reset_deassert(ts);
+	gpiod_set_value_cansleep(ts->gpio_rst, 0);
 
 	ts->command_waiting = NOTIFICATION_BOOTCOMPLETE;
 	if (wait_for_completion_timeout(&ts->command_done, WAIT_TIMEOUT) == 0)
 		dev_warn(&client->dev, "bootcomplete timed out\n");
 
 	/* need to start device to get version information */
-	ret = zforce_command_wait(ts, COMMAND_INITIALIZE);
-	if (ret) {
-		dev_err(&client->dev, "unable to initialize, %d\n", ret);
-		return ret;
-	}
+	error = zforce_command_wait(ts, COMMAND_INITIALIZE);
+	if (error)
+		return dev_err_probe(&client->dev, error, "unable to initialize\n");
 
 	/* this gets the firmware version among other information */
-	ret = zforce_command_wait(ts, COMMAND_STATUS);
-	if (ret < 0) {
-		dev_err(&client->dev, "couldn't get status, %d\n", ret);
+	error = zforce_command_wait(ts, COMMAND_STATUS);
+	if (error) {
+		dev_err_probe(&client->dev, error, "couldn't get status\n");
 		zforce_stop(ts);
-		return ret;
+		return error;
 	}
 
 	/* stop device and put it into sleep until it is opened */
-	ret = zforce_stop(ts);
-	if (ret < 0)
-		return ret;
+	error = zforce_stop(ts);
+	if (error)
+		return error;
 
 	device_set_wakeup_capable(&client->dev, true);
 
-	ret = input_register_device(input_dev);
-	if (ret) {
-		dev_err(&client->dev, "could not register input device, %d\n",
-			ret);
-		return ret;
-	}
+	error = input_register_device(input_dev);
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "could not register input device\n");
 
 	return 0;
 }
 
-static struct i2c_device_id zforce_idtable[] = {
+static const struct i2c_device_id zforce_idtable[] = {
 	{ "zforce-ts" },
 	{ }
 };
···
 		.name	= "zforce-ts",
 		.pm	= pm_sleep_ptr(&zforce_pm_ops),
 		.of_match_table	= of_match_ptr(zforce_dt_idtable),
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	},
 	.probe		= zforce_probe,
 	.id_table	= zforce_idtable,

drivers/input/touchscreen/zinitix.c

···
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 
···
 #define ZINITIX_DEBUG_REG			0x0115 /* 0~7 */
 
 #define ZINITIX_TOUCH_MODE			0x0010
+
 #define ZINITIX_CHIP_REVISION			0x0011
+#define ZINITIX_CHIP_BTX0X_MASK			0xF0F0
+#define ZINITIX_CHIP_BT4X2			0x4020
+#define ZINITIX_CHIP_BT4X3			0x4030
+#define ZINITIX_CHIP_BT4X4			0x4040
+
 #define ZINITIX_FIRMWARE_VERSION		0x0012
 
 #define ZINITIX_USB_DETECT			0x116
···
 #define ZINITIX_Y_RESOLUTION			0x00C1
 
 #define ZINITIX_POINT_STATUS_REG		0x0080
-#define ZINITIX_ICON_STATUS_REG			0x00AA
+
+#define ZINITIX_BT4X2_ICON_STATUS_REG		0x009A
+#define ZINITIX_BT4X3_ICON_STATUS_REG		0x00A0
+#define ZINITIX_BT4X4_ICON_STATUS_REG		0x00A0
+#define ZINITIX_BT5XX_ICON_STATUS_REG		0x00AA
 
 #define ZINITIX_POINT_COORD_REG			(ZINITIX_POINT_STATUS_REG + 2)
 
···
 
 #define DEFAULT_TOUCH_POINT_MODE		2
 #define MAX_SUPPORTED_FINGER_NUM		5
+#define MAX_SUPPORTED_BUTTON_NUM		8
 
 #define CHIP_ON_DELAY				15 // ms
 #define FIRMWARE_ON_DELAY			40 // ms
···
 	struct touchscreen_properties prop;
 	struct regulator_bulk_data supplies[2];
 	u32 zinitix_mode;
+	u32 keycodes[MAX_SUPPORTED_BUTTON_NUM];
+	int num_keycodes;
+	bool have_versioninfo;
+	u16 chip_revision;
+	u16 firmware_version;
+	u16 regdata_version;
+	u16 icon_status_reg;
 };
 
 static int zinitix_read_data(struct i2c_client *client,
···
 	return 0;
 }
 
+static u16 zinitix_get_u16_reg(struct bt541_ts_data *bt541, u16 vreg)
+{
+	struct i2c_client *client = bt541->client;
+	int error;
+	__le16 val;
+
+	error = zinitix_read_data(client, vreg, (void *)&val, 2);
+	if (error)
+		return U8_MAX;
+
+	return le16_to_cpu(val);
+}
+
 static int zinitix_init_touch(struct bt541_ts_data *bt541)
 {
 	struct i2c_client *client = bt541->client;
 	int i;
 	int error;
+	u16 int_flags;
 
 	error = zinitix_write_cmd(client, ZINITIX_SWRESET_CMD);
 	if (error) {
 		dev_err(&client->dev, "Failed to write reset command\n");
 		return error;
+	}
+
+	/*
+	 * Read and cache the chip revision and firmware version the first time
+	 * we get here.
+	 */
+	if (!bt541->have_versioninfo) {
+		bt541->chip_revision = zinitix_get_u16_reg(bt541,
+						ZINITIX_CHIP_REVISION);
+		bt541->firmware_version = zinitix_get_u16_reg(bt541,
+						ZINITIX_FIRMWARE_VERSION);
+		bt541->regdata_version = zinitix_get_u16_reg(bt541,
+						ZINITIX_DATA_VERSION_REG);
+		bt541->have_versioninfo = true;
+
+		dev_dbg(&client->dev,
+			"chip revision %04x firmware version %04x regdata version %04x\n",
+			bt541->chip_revision, bt541->firmware_version,
+			bt541->regdata_version);
+
+		/*
+		 * Determine the "icon" status register which varies by the
+		 * chip.
+		 */
+		switch (bt541->chip_revision & ZINITIX_CHIP_BTX0X_MASK) {
+		case ZINITIX_CHIP_BT4X2:
+			bt541->icon_status_reg = ZINITIX_BT4X2_ICON_STATUS_REG;
+			break;
+
+		case ZINITIX_CHIP_BT4X3:
+			bt541->icon_status_reg = ZINITIX_BT4X3_ICON_STATUS_REG;
+			break;
+
+		case ZINITIX_CHIP_BT4X4:
+			bt541->icon_status_reg = ZINITIX_BT4X4_ICON_STATUS_REG;
+			break;
+
+		default:
+			bt541->icon_status_reg = ZINITIX_BT5XX_ICON_STATUS_REG;
+			break;
+		}
 	}
 
 	error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG, 0x0);
···
 	if (error)
 		return error;
 
+	error = zinitix_write_u16(client, ZINITIX_BUTTON_SUPPORTED_NUM,
+				  bt541->num_keycodes);
+	if (error)
+		return error;
+
 	error = zinitix_write_u16(client, ZINITIX_INITIAL_TOUCH_MODE,
 				  bt541->zinitix_mode);
 	if (error)
···
 	if (error)
 		return error;
 
-	error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG,
-				  BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE |
-					BIT_UP);
+	int_flags = BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE | BIT_UP;
+	if (bt541->num_keycodes)
+		int_flags |= BIT_ICON_EVENT;
+
+	error = zinitix_write_u16(client, ZINITIX_INT_ENABLE_FLAG, int_flags);
 	if (error)
 		return error;
 
···
 	}
 }
 
+static void zinitix_report_keys(struct bt541_ts_data *bt541, u16 icon_events)
+{
+	int i;
+
+	for (i = 0; i < bt541->num_keycodes; i++)
+		input_report_key(bt541->input_dev,
+				 bt541->keycodes[i], icon_events & BIT(i));
+}
+
 static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler)
 {
 	struct bt541_ts_data *bt541 = bt541_handler;
 	struct i2c_client *client = bt541->client;
 	struct touch_event touch_event;
 	unsigned long finger_mask;
+	__le16 icon_events;
 	int error;
 	int i;
 
···
 	if (error) {
 		dev_err(&client->dev, "Failed to read in touchpoint struct\n");
 		goto out;
+	}
+
+	if (le16_to_cpu(touch_event.status) & BIT_ICON_EVENT) {
+		error = zinitix_read_data(bt541->client, bt541->icon_status_reg,
+					  &icon_events, sizeof(icon_events));
+		if (error) {
+			dev_err(&client->dev, "Failed to read icon events\n");
+			goto out;
+		}
+
+		zinitix_report_keys(bt541, le16_to_cpu(icon_events));
 	}
 
 	finger_mask = touch_event.finger_mask;
···
 {
 	struct input_dev *input_dev;
 	int error;
+	int i;
 
 	input_dev = devm_input_allocate_device(&bt541->client->dev);
 	if (!input_dev) {
···
 	input_dev->id.bustype = BUS_I2C;
 	input_dev->open = zinitix_input_open;
 	input_dev->close = zinitix_input_close;
+
+	if (bt541->num_keycodes) {
+		input_dev->keycode = bt541->keycodes;
+		input_dev->keycodemax = bt541->num_keycodes;
+		input_dev->keycodesize = sizeof(bt541->keycodes[0]);
+		for (i = 0; i < bt541->num_keycodes; i++)
+			input_set_capability(input_dev, EV_KEY, bt541->keycodes[i]);
+	}
 
 	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X);
 	input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y);
···
 					  client->name, bt541);
 	if (error) {
 		dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+		return error;
+	}
+
+	bt541->num_keycodes = device_property_count_u32(&client->dev, "linux,keycodes");
+	if (bt541->num_keycodes > ARRAY_SIZE(bt541->keycodes)) {
+		dev_err(&client->dev, "too many keys defined (%d)\n", bt541->num_keycodes);
+		return -EINVAL;
+	}
+
+	error = device_property_read_u32_array(&client->dev, "linux,keycodes",
+					       bt541->keycodes,
+					       bt541->num_keycodes);
+	if (error) {
+		dev_err(&client->dev,
+			"Unable to parse \"linux,keycodes\" property: %d\n", error);
 		return error;
 	}
 

include/linux/input/matrix_keypad.h

···
 	unsigned int	keymap_size;
 };
 
-/**
- * struct matrix_keypad_platform_data - platform-dependent keypad data
- * @keymap_data: pointer to &matrix_keymap_data
- * @row_gpios: pointer to array of gpio numbers representing rows
- * @col_gpios: pointer to array of gpio numbers reporesenting colums
- * @num_row_gpios: actual number of row gpios used by device
- * @num_col_gpios: actual number of col gpios used by device
- * @col_scan_delay_us: delay, measured in microseconds, that is
- *	needed before we can keypad after activating column gpio
- * @debounce_ms: debounce interval in milliseconds
- * @clustered_irq: may be specified if interrupts of all row/column GPIOs
- *	are bundled to one single irq
- * @clustered_irq_flags: flags that are needed for the clustered irq
- * @active_low: gpio polarity
- * @wakeup: controls whether the device should be set up as wakeup
- *	source
- * @no_autorepeat: disable key autorepeat
- * @drive_inactive_cols: drive inactive columns during scan, rather than
- *	making them inputs.
- *
- * This structure represents platform-specific data that use used by
- * matrix_keypad driver to perform proper initialization.
- */
-struct matrix_keypad_platform_data {
-	const struct matrix_keymap_data *keymap_data;
-
-	const unsigned int *row_gpios;
-	const unsigned int *col_gpios;
-
-	unsigned int	num_row_gpios;
-	unsigned int	num_col_gpios;
-
-	unsigned int	col_scan_delay_us;
-
-	/* key debounce interval in milli-second */
-	unsigned int	debounce_ms;
-
-	unsigned int	clustered_irq;
-	unsigned int	clustered_irq_flags;
-
-	bool		active_low;
-	bool		wakeup;
-	bool		no_autorepeat;
-	bool		drive_inactive_cols;
-};
-
 int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data,
 			       const char *keymap_name,
 			       unsigned int rows, unsigned int cols,
···
 			       struct input_dev *input_dev);
 int matrix_keypad_parse_properties(struct device *dev,
 				   unsigned int *rows, unsigned int *cols);
-
-#define matrix_keypad_parse_of_params matrix_keypad_parse_properties
 
 #endif /* _MATRIX_KEYPAD_H */

include/linux/platform_data/cyttsp4.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Header file for:
- * Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
- * For use with Cypress Txx3xx parts.
- * Supported parts include:
- * CY8CTST341
- * CY8CTMA340
- *
- * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
- * Copyright (C) 2012 Javier Martinez Canillas <[e-mail]>
- *
- * Contact Cypress Semiconductor at www.cypress.com ([e-mail])
- */
-#ifndef _CYTTSP4_H_
-#define _CYTTSP4_H_
-
-#define CYTTSP4_MT_NAME "cyttsp4_mt"
-#define CYTTSP4_I2C_NAME "cyttsp4_i2c_adapter"
-#define CYTTSP4_SPI_NAME "cyttsp4_spi_adapter"
-
-#define CY_TOUCH_SETTINGS_MAX 32
-
-struct touch_framework {
-	const uint16_t  *abs;
-	uint8_t         size;
-	uint8_t         enable_vkeys;
-} __packed;
-
-struct cyttsp4_mt_platform_data {
-	struct touch_framework *frmwrk;
-	unsigned short flags;
-	char const *inp_dev_name;
-};
-
-struct touch_settings {
-	const uint8_t *data;
-	uint32_t size;
-	uint8_t tag;
-} __packed;
-
-struct cyttsp4_core_platform_data {
-	int irq_gpio;
-	int rst_gpio;
-	int level_irq_udelay;
-	int (*xres)(struct cyttsp4_core_platform_data *pdata,
-		struct device *dev);
-	int (*init)(struct cyttsp4_core_platform_data *pdata,
-		int on, struct device *dev);
-	int (*power)(struct cyttsp4_core_platform_data *pdata,
-		int on, struct device *dev, atomic_t *ignore_irq);
-	int (*irq_stat)(struct cyttsp4_core_platform_data *pdata,
-		struct device *dev);
-	struct touch_settings *sett[CY_TOUCH_SETTINGS_MAX];
-};
-
-struct cyttsp4_platform_data {
-	struct cyttsp4_core_platform_data *core_pdata;
-	struct cyttsp4_mt_platform_data *mt_pdata;
-};
-
-#endif /* _CYTTSP4_H_ */

include/linux/platform_data/keypad-nomadik-ske.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) ST-Ericsson SA 2010
- *
- * Author: Naveen Kumar Gaddipati <[e-mail]>
- *
- * ux500 Scroll key and Keypad Encoder (SKE) header
- */
-
-#ifndef __SKE_H
-#define __SKE_H
-
-#include <linux/input/matrix_keypad.h>
-
-/* register definitions for SKE peripheral */
-#define SKE_CR		0x00
-#define SKE_VAL0	0x04
-#define SKE_VAL1	0x08
-#define SKE_DBCR	0x0C
-#define SKE_IMSC	0x10
-#define SKE_RIS		0x14
-#define SKE_MIS		0x18
-#define SKE_ICR		0x1C
-
-/*
- * Keypad module
- */
-
-/**
- * struct keypad_platform_data - structure for platform specific data
- * @init:	pointer to keypad init function
- * @exit:	pointer to keypad deinitialisation function
- * @keymap_data: matrix scan code table for keycodes
- * @krow:	maximum number of rows
- * @kcol:	maximum number of columns
- * @debounce_ms: platform specific debounce time
- * @no_autorepeat: flag for auto repetition
- * @wakeup_enable: allow waking up the system
- */
-struct ske_keypad_platform_data {
-	int (*init)(void);
-	int (*exit)(void);
-	const struct matrix_keymap_data *keymap_data;
-	u8 krow;
-	u8 kcol;
-	u8 debounce_ms;
-	bool no_autorepeat;
-	bool wakeup_enable;
-};
-#endif	/*__SKE_KPD_H*/

include/linux/platform_data/mcs.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2009 - 2010 Samsung Electronics Co.Ltd
- * Author: Joonyoung Shim <[e-mail]>
- * Author: HeungJun Kim <[e-mail]>
- */
-
-#ifndef __LINUX_MCS_H
-#define __LINUX_MCS_H
-
-#define MCS_KEY_MAP(v, c)	((((v) & 0xff) << 16) | ((c) & 0xffff))
-#define MCS_KEY_VAL(v)		(((v) >> 16) & 0xff)
-#define MCS_KEY_CODE(v)		((v) & 0xffff)
-
-struct mcs_platform_data {
-	void (*poweron)(bool);
-	void (*cfg_pin)(void);
-
-	/* touchscreen */
-	unsigned int x_size;
-	unsigned int y_size;
-
-	/* touchkey */
-	const u32 *keymap;
-	unsigned int keymap_size;
-	unsigned int key_maxval;
-	bool no_autorepeat;
-};
-
-#endif	/* __LINUX_MCS_H */

include/linux/platform_data/zforce_ts.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/* drivers/input/touchscreen/zforce.c
- *
- * Copyright (C) 2012-2013 MundoReader S.L.
- */
-
-#ifndef _LINUX_INPUT_ZFORCE_TS_H
-#define _LINUX_INPUT_ZFORCE_TS_H
-
-struct zforce_ts_platdata {
-	unsigned int x_max;
-	unsigned int y_max;
-};
-
-#endif /* _LINUX_INPUT_ZFORCE_TS_H */