Merge tag 'iio-for-5.19a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

First set of IIO new device support, features and cleanup for 5.19

Usual mixed bag. Stand out this time is Andy Shevchenko's continuing
effort to move drivers over the generic firmware interfaces.

Device support
* sprd,sc2720
- upm9620 binding addition.
- Refactor and support for sc2720, sc2721 and sc2730.
* ti,ads1015
- Refactor driver and add support for TLA2024.

Device support (IDs only)
* invensense,mpu6050
- Add ID for ICM-20608-D.
* st,accel:
- Add ID for lis302dl.
* st,lsm6dsx
- Add support for ASM330LHHX (can fallback to LSM6DSR.)

Features
* convert drivers to device properties
- IIO core
- adi,ad7266
- adi,adis16480
- adi,adxl355
- bosch,bmi160
- domintech,dmard06
- fsl,fxas21002c
- invensense,mpu3050
- linear,ltc2983
- linear,ltc2632
- maxbotix,mb1232
- maxim,max31856
- maxim,max31865
- multiplexer
- ping
- rescale
- taos,tsl2772
* core
- Add runtime check on whether realbits fit in storagebits for each
channel.
* adi,ad_sigma_delta
- Add sequencer support and relevant update_scan_mode callbacks for
adi,ad7192 and adi,ad7124.

Cleanup and minor fixes
* MAINTAINERS
- Update Lorenzo Bianconi's email address for IIO drivers.
- Add entry for ad3552r and update maintainer in dt-binding doc.
* tree-wide
- Replace strtobool() with kstrtobool().
- Drop false OF dependencies.
* core
- Tidy up and document IIO modes.
- Take iio_buffer_enabled() out of header allowing current_mode to be
moved to the opaque structure.
- As all kfifo buffers use the same mode value, drop that parameter
and set it unconditionally.
- White space fixes and similar.
- Drop use of list iterator variable for
list_for_each_entry_continue_reverse and use list_prepare_entry to
restart.
* sysfs-trigger
- Replace use of 'found' variable with dedicate list iterator variable.
* adi,ad7124
- Drop misleading shift.
* adi,ad2s1210
- Remove redundant local variable assignment.
* adi,adis16480
- Use local device pointer to reduce repetition.
- Improve handling of clocks.
* domintech,dmard09
- White space.
* dummy driver
- Improve error handling.
* fsl,mma8452
- Add missing documentation of name element.
* invensense,mpu3050
- Stop remove() returning non 0.
* kionix,kxsd9
- White space.
* linear,ltc2688
- Use local variable for struct device.
- Combine of_node_put() error handling paths.
* linear,ltc2983
- Avoid use of constants in messages where a define is available.
* microchip,mcp4131
- Fix compatible in dt example.
* pni,rm3100
- Stop directly accessing iio_dev->current_mode just to find out
if the buffer is enabled.
* renesas,rzg2l
- Relax kconfig constraint to include newer devices.
* sprd,sc27xx
- Fix wrong scaling mask.
- Improve the calibration values.
* samsung,ssp
- Replace a 'found' variable in favor of an explicit value that was
found.
* sensortek,stk3xx
- Add proximity-near-level binding and driver support.
* st,st_sensors:
- Drop unused accel_type enum.
- Return early in *_write_raw()
- Drop unnecessary locking in _avail functions.
- Add local lock to protect odr against concurrent updates allowing
mlock to no longer be used outside of the core.
- Use iio_device_claim_direct_mode() rather than racy checking of
the current mode.
* st,stmpe-adc
- Fix checks on wait_for_completion_timeout().
- Allow use of of_device_id for matching.
* st,stm32-dfsdm
- Stop accessing iio_dev->current_mode to find out if the buffer
is enabled (so we can hide that variable in the opaque structure)
* st,vl53l0x
- Fix checks on wait_for_completion_timeout.
* ti,ads1015
- Add missing ID for ti,ads1115 in binding doc.
- Convert from repeated chip ID look up to selecting static const
data.
- Switch to read_avail() callback.
* ti,ads8688
- Use of_device_id for driver matching.
* ti,palmas-adc
- Drop a warning on minor calibration mismatch leading to slightly
negative values after applying the calibration.

* tag 'iio-for-5.19a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (95 commits)
iio: ti-ads8688: use of_device_id for OF matching
iio: stmpe-adc: use of_device_id for OF matching
dt-bindings: iio: Fix incorrect compatible strings in examples
iio: gyro: mpu3050: Make mpu3050_common_remove() return void
iio: dac: ltc2632: Make use of device properties
iio: temperature: max31865: Make use of device properties
iio: proximity: mb1232: Switch to use fwnode_irq_get()
iio: imu: adis16480: Improve getting the optional clocks
iio: imu: adis16480: Use temporary variable for struct device
iio: imu: adis16480: Make use of device properties
staging: iio: ad2s1210: remove redundant assignment to variable negative
iio: adc: sc27xx: add support for PMIC sc2730
iio: adc: sc27xx: add support for PMIC sc2720 and sc2721
iio: adc: sc27xx: refactor some functions for support more PMiCs
iio: adc: sc27xx: structure adjustment and optimization
iio: adc: sc27xx: Fine tune the scale calibration values
iio: adc: sc27xx: fix read big scale voltage not right
dt-bindings:iio:adc: add sprd,ump9620-adc dt-binding
iio: proximity: stk3310: Export near level property for proximity sensor
dt-bindings: iio: light: stk33xx: Add proximity-near-level
...

Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml

···
   compatible:
     items:
       - enum:
-          - renesas,r9a07g044-adc   # RZ/G2{L,LC}
+          - renesas,r9a07g044-adc   # RZ/G2L
+          - renesas,r9a07g054-adc   # RZ/V2L
       - const: renesas,rzg2l-adc
 
   reg:

Documentation/devicetree/bindings/iio/adc/sprd,sc2720-adc.yaml

···
       - sprd,sc2723-adc
       - sprd,sc2730-adc
       - sprd,sc2731-adc
+      - sprd,ump9620-adc
 
   reg:
     maxItems: 1
···
   hwlocks:
     maxItems: 1
 
-  nvmem-cells:
-    maxItems: 2
+  nvmem-cells: true
 
-  nvmem-cell-names:
-    items:
-      - const: big_scale_calib
-      - const: small_scale_calib
+  nvmem-cell-names: true
+
+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - sprd,ump9620-adc
+    then:
+      properties:
+        nvmem-cells:
+          maxItems: 2
+        nvmem-cell-names:
+          items:
+            - const: big_scale_calib
+            - const: small_scale_calib
+
+    else:
+      properties:
+        nvmem-cells:
+          maxItems: 6
+        nvmem-cell-names:
+          items:
+            - const: big_scale_calib1
+            - const: big_scale_calib2
+            - const: small_scale_calib1
+            - const: small_scale_calib2
+            - const: vbat_det_cal1
+            - const: vbat_det_cal2
 
 required:
   - compatible
···
             hwlocks = <&hwlock 4>;
             nvmem-cells = <&adc_big_scale>, <&adc_small_scale>;
             nvmem-cell-names = "big_scale_calib", "small_scale_calib";
+        };
+    };
+
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pmic {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        adc@504 {
+            compatible = "sprd,ump9620-adc";
+            reg = <0x504>;
+            interrupt-parent = <&ump9620_pmic>;
+            interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+            #io-channel-cells = <1>;
+            hwlocks = <&hwlock 4>;
+            nvmem-cells = <&adc_bcal1>, <&adc_bcal2>,
+                          <&adc_scal1>, <&adc_scal2>,
+                          <&vbat_det_cal1>, <&vbat_det_cal2>;
+            nvmem-cell-names = "big_scale_calib1", "big_scale_calib2",
+                               "small_scale_calib1", "small_scale_calib2",
+                               "vbat_det_cal1", "vbat_det_cal2";
         };
     };
 ...

Documentation/devicetree/bindings/iio/adc/ti,ads1015.yaml

···
 $id: http://devicetree.org/schemas/iio/adc/ti,ads1015.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: TI ADS1015 4 channel I2C analog to digital converter
+title: TI ADS1015/ADS1115 4 channel I2C analog to digital converter
 
 maintainers:
   - Daniel Baluta <[e-mail]>
···
 
 properties:
   compatible:
-    const: ti,ads1015
+    enum:
+      - ti,ads1015
+      - ti,ads1115
+      - ti,tla2024
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml

···
 title: Analog Devices AD2552R DAC device driver
 
 maintainers:
-  - Mihail Chindris <[e-mail]>
+  - Nuno Sá <[e-mail]>
 
 description: |
   Bindings for the Analog Devices AD3552R DAC device and similar.

Documentation/devicetree/bindings/iio/dac/lltc,ltc2632.yaml

···
       #size-cells = <0>;
 
       dac@0 {
-        compatible = "lltc,ltc2632";
+        compatible = "lltc,ltc2632-l12";
         reg = <0>;    /* CS0 */
         spi-max-frequency = <1000000>;
         vref-supply = <&vref>;

Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml

···
 
 properties:
   compatible:
-    enum:
-      - invensense,iam20680
-      - invensense,icm20608
-      - invensense,icm20609
-      - invensense,icm20689
-      - invensense,icm20602
-      - invensense,icm20690
-      - invensense,mpu6000
-      - invensense,mpu6050
-      - invensense,mpu6500
-      - invensense,mpu6515
-      - invensense,mpu6880
-      - invensense,mpu9150
-      - invensense,mpu9250
-      - invensense,mpu9255
+    oneOf:
+      - enum:
+          - invensense,iam20680
+          - invensense,icm20608
+          - invensense,icm20609
+          - invensense,icm20689
+          - invensense,icm20602
+          - invensense,icm20690
+          - invensense,mpu6000
+          - invensense,mpu6050
+          - invensense,mpu6500
+          - invensense,mpu6515
+          - invensense,mpu6880
+          - invensense,mpu9150
+          - invensense,mpu9250
+          - invensense,mpu9255
+      - items:
+          - const: invensense,icm20608d
+          - const: invensense,icm20608
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml

···
 
 properties:
   compatible:
-    enum:
-      - st,lsm6ds3
-      - st,lsm6ds3h
-      - st,lsm6dsl
-      - st,lsm6dsm
-      - st,ism330dlc
-      - st,lsm6dso
-      - st,asm330lhh
-      - st,lsm6dsox
-      - st,lsm6dsr
-      - st,lsm6ds3tr-c
-      - st,ism330dhcx
-      - st,lsm9ds1-imu
-      - st,lsm6ds0
-      - st,lsm6dsrx
-      - st,lsm6dst
-      - st,lsm6dsop
+    oneOf:
+      - enum:
+          - st,lsm6ds3
+          - st,lsm6ds3h
+          - st,lsm6dsl
+          - st,lsm6dsm
+          - st,ism330dlc
+          - st,lsm6dso
+          - st,asm330lhh
+          - st,lsm6dsox
+          - st,lsm6dsr
+          - st,lsm6ds3tr-c
+          - st,ism330dhcx
+          - st,lsm9ds1-imu
+          - st,lsm6ds0
+          - st,lsm6dsrx
+          - st,lsm6dst
+          - st,lsm6dsop
+      - items:
+          - const: st,asm330lhhx
+          - const: st,lsm6dsr
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/iio/light/stk33xx.yaml

···
 description: |
   Ambient light and proximity sensor over an i2c interface.
 
+allOf:
+  - $ref: ../common.yaml#
+
 properties:
   compatible:
     enum:
···
 
   interrupts:
     maxItems: 1
+
+  proximity-near-level: true
 
 required:
   - compatible
···
         stk3310@48 {
                 compatible = "sensortek,stk3310";
                 reg = <0x48>;
+                proximity-near-level = <25>;
                 interrupt-parent = <&gpio1>;
                 interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
         };

Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4131.yaml

···
         #size-cells = <0>;
 
         potentiometer@0 {
-            compatible = "mcp4131-502";
+            compatible = "microchip,mcp4131-502";
             reg = <0>;
             spi-max-frequency = <500000>;
         };

Documentation/devicetree/bindings/iio/st,st-sensors.yaml

···
           - st,lis2dw12
           - st,lis2hh12
           - st,lis2dh12-accel
+          - st,lis302dl
           - st,lis331dl-accel
           - st,lis331dlh-accel
           - st,lis3de

MAINTAINERS

···
 F:	Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
 F:	drivers/iio/adc/ad7292.c
 
+ANALOG DEVICES INC AD3552R DRIVER
+M:	Nuno Sá <[e-mail]>
+L:	[e-mail]
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/dac/adi,ad3552r.yaml
+F:	drivers/iio/dac/ad3552r.c
+
 ANALOG DEVICES INC AD7293 DRIVER
 M:	Antoniu Miclaus <[e-mail]>
 L:	[e-mail]
···
 F:	drivers/input/touchscreen/htcpen.c
 
 HTS221 TEMPERATURE-HUMIDITY IIO DRIVER
-M:	Lorenzo Bianconi <[e-mail]>
+M:	Lorenzo Bianconi <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 W:	http://www.st.com/
···
 F:	arch/alpha/kernel/srm_env.c
 
 ST LSM6DSx IMU IIO DRIVER
-M:	Lorenzo Bianconi <[e-mail]>
+M:	Lorenzo Bianconi <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 W:	http://www.st.com/

drivers/iio/accel/Kconfig

···
 
 config DMARD06
 	tristate "Domintech DMARD06 Digital Accelerometer Driver"
-	depends on OF || COMPILE_TEST
 	depends on I2C
 	help
 	  Say yes here to build support for the Domintech low-g tri-axial

drivers/iio/accel/adxl355_core.c

···
 #include <linux/math64.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
-#include <linux/of_irq.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/units.h>
 
···
 		return ret;
 	}
 
-	/*
-	 * TODO: Would be good to move it to the generic version.
-	 */
-	irq = of_irq_get_byname(dev->of_node, "DRDY");
+	irq = fwnode_irq_get_byname(dev_fwnode(dev), "DRDY");
 	if (irq > 0) {
 		ret = adxl355_probe_trigger(indio_dev, irq);
 		if (ret)

drivers/iio/accel/adxl367.c

···
 		return ret;
 
 	ret = devm_iio_kfifo_buffer_setup_ext(st->dev, indio_dev,
-					      INDIO_BUFFER_SOFTWARE,
 					      &adxl367_buffer_ops,
 					      adxl367_fifo_attributes);
 	if (ret)

drivers/iio/accel/bmc150-accel-core.c

···
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
 	int ret = 0;
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
+	if (iio_device_get_current_mode(indio_dev) == INDIO_BUFFER_TRIGGERED)
 		return 0;
 
 	mutex_lock(&data->mutex);
···
 {
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
+	if (iio_device_get_current_mode(indio_dev) == INDIO_BUFFER_TRIGGERED)
 		return 0;
 
 	mutex_lock(&data->mutex);

drivers/iio/accel/dmard09.c

···
 #define DMARD09_AXIS_Y 1
 #define DMARD09_AXIS_Z 2
 #define DMARD09_AXIS_X_OFFSET ((DMARD09_AXIS_X + 1) * 2)
-#define DMARD09_AXIS_Y_OFFSET ((DMARD09_AXIS_Y + 1 )* 2)
+#define DMARD09_AXIS_Y_OFFSET ((DMARD09_AXIS_Y + 1) * 2)
 #define DMARD09_AXIS_Z_OFFSET ((DMARD09_AXIS_Z + 1) * 2)
 
 struct dmard09_data {

drivers/iio/accel/fxls8962af-core.c

···
 			return ret;
 
 		ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
-						  INDIO_BUFFER_SOFTWARE,
 						  &fxls8962af_buffer_ops);
 		if (ret)
 			return ret;

drivers/iio/accel/kxsd9-spi.c

···
 MODULE_DEVICE_TABLE(spi, kxsd9_spi_id);
 
 static const struct of_device_id kxsd9_of_match[] = {
-        { .compatible = "kionix,kxsd9" },
-        { },
+	{ .compatible = "kionix,kxsd9" },
+	{ }
 };
 MODULE_DEVICE_TABLE(of, kxsd9_of_match);
 

drivers/iio/accel/mma8452.c

···
 
 /**
  * struct mma_chip_info - chip specific data
+ * @name:			part number of device reported via 'name' attr
  * @chip_id:			WHO_AM_I register's value
  * @channels:			struct iio_chan_spec matching the device's
  *				capabilities

drivers/iio/accel/sca3000.c

···
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = devm_iio_kfifo_buffer_setup(&spi->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &sca3000_ring_setup_ops);
 	if (ret)
 		return ret;

drivers/iio/accel/ssp_accel_sensor.c

···
 	indio_dev->available_scan_masks = ssp_accel_scan_mask;
 
 	ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &ssp_accel_buffer_ops);
 	if (ret)
 		return ret;

drivers/iio/accel/st_accel.h

···
 #include <linux/types.h>
 #include <linux/iio/common/st_sensors.h>
 
-enum st_accel_type {
-	LSM303DLH,
-	LSM303DLHC,
-	LIS3DH,
-	LSM330D,
-	LSM330DL,
-	LSM330DLC,
-	LIS331DLH,
-	LSM303DL,
-	LSM303DLM,
-	LSM330,
-	LSM303AGR,
-	LIS2DH12,
-	LIS3L02DQ,
-	LNG2DM,
-	H3LIS331DL,
-	LIS331DL,
-	LIS3LV02DL,
-	LIS2DW12,
-	LIS3DHH,
-	LIS2DE12,
-	LIS2HH12,
-	SC7A20,
-	ST_ACCEL_MAX,
-};
-
 #define H3LIS331DL_ACCEL_DEV_NAME	"h3lis331dl_accel"
 #define LIS3LV02DL_ACCEL_DEV_NAME	"lis3lv02dl_accel"
 #define LSM303DLHC_ACCEL_DEV_NAME	"lsm303dlhc_accel"
···
 #define LIS3DE_ACCEL_DEV_NAME		"lis3de"
 #define LIS2DE12_ACCEL_DEV_NAME		"lis2de12"
 #define LIS2HH12_ACCEL_DEV_NAME		"lis2hh12"
+#define LIS302DL_ACCEL_DEV_NAME		"lis302dl"
 #define SC7A20_ACCEL_DEV_NAME		"sc7a20"
+
 
 #ifdef CONFIG_IIO_BUFFER
 int st_accel_allocate_ring(struct iio_dev *indio_dev);

drivers/iio/accel/st_accel_core.c

···
 		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 		.sensors_supported = {
 			[0] = LIS331DL_ACCEL_DEV_NAME,
+			[1] = LIS302DL_ACCEL_DEV_NAME,
 		},
 		.ch = (struct iio_chan_spec *)st_accel_8bit_channels,
 		.odr = {
···
 static int st_accel_write_raw(struct iio_dev *indio_dev,
 		struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE: {
 		int gain;
 
 		gain = val * 1000000 + val2;
-		err = st_sensors_set_fullscale_by_gain(indio_dev, gain);
-		break;
+		return st_sensors_set_fullscale_by_gain(indio_dev, gain);
 	}
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
+
+		return st_sensors_set_odr(indio_dev, val);
 	default:
 		return -EINVAL;
 	}
-
-	return err;
 }
 
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();

drivers/iio/accel/st_accel_i2c.c

···
 		.data = LIS2HH12_ACCEL_DEV_NAME,
 	},
 	{
+		.compatible = "st,lis302dl",
+		.data = LIS302DL_ACCEL_DEV_NAME,
+	},
+	{
 		.compatible = "silan,sc7a20",
 		.data = SC7A20_ACCEL_DEV_NAME,
 	},
···
 	{ LIS3DE_ACCEL_DEV_NAME },
 	{ LIS2DE12_ACCEL_DEV_NAME },
 	{ LIS2HH12_ACCEL_DEV_NAME },
+	{ LIS302DL_ACCEL_DEV_NAME },
 	{ SC7A20_ACCEL_DEV_NAME },
 	{},
 };

drivers/iio/accel/st_accel_spi.c

···
 		.compatible = "st,lis3de",
 		.data = LIS3DE_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis302dl",
+		.data = LIS302DL_ACCEL_DEV_NAME,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
···
 	{ LIS2DW12_ACCEL_DEV_NAME },
 	{ LIS3DHH_ACCEL_DEV_NAME },
 	{ LIS3DE_ACCEL_DEV_NAME },
+	{ LIS302DL_ACCEL_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_accel_id_table);

drivers/iio/adc/Kconfig

···
 
 config RZG2L_ADC
 	tristate "Renesas RZ/G2L ADC driver"
-	depends on ARCH_R9A07G044 || COMPILE_TEST
+	depends on ARCH_RZG2L || COMPILE_TEST
 	help
 	  Say yes here to build support for the ADC found in Renesas
 	  RZ/G2L family.

drivers/iio/adc/ad7124.c

···
 #define AD7124_STATUS_POR_FLAG_MSK	BIT(4)
 
 /* AD7124_ADC_CONTROL */
+#define AD7124_ADC_STATUS_EN_MSK	BIT(10)
+#define AD7124_ADC_STATUS_EN(x)		FIELD_PREP(AD7124_ADC_STATUS_EN_MSK, x)
 #define AD7124_ADC_CTRL_REF_EN_MSK	BIT(8)
 #define AD7124_ADC_CTRL_REF_EN(x)	FIELD_PREP(AD7124_ADC_CTRL_REF_EN_MSK, x)
 #define AD7124_ADC_CTRL_PWR_MSK	GENMASK(7, 6)
···
 		.sign = 'u',
 		.realbits = 24,
 		.storagebits = 32,
-		.shift = 8,
 		.endianness = IIO_BE,
 	},
 };
···
 	return ad7124_enable_channel(st, &st->channels[address]);
 }
 
+static int __ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
+{
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+
+	return ad7124_prepare_read(st, channel);
+}
+
 static int ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
 {
 	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
 	int ret;
 
 	mutex_lock(&st->cfgs_lock);
-	ret = ad7124_prepare_read(st, channel);
+	ret = __ad7124_set_channel(sd, channel);
 	mutex_unlock(&st->cfgs_lock);
 
 	return ret;
 }
 
+static int ad7124_append_status(struct ad_sigma_delta *sd, bool append)
+{
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+	unsigned int adc_control = st->adc_control;
+	int ret;
+
+	adc_control &= ~AD7124_ADC_STATUS_EN_MSK;
+	adc_control |= AD7124_ADC_STATUS_EN(append);
+
+	ret = ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, adc_control);
+	if (ret < 0)
+		return ret;
+
+	st->adc_control = adc_control;
+
+	return 0;
+}
+
+static int ad7124_disable_all(struct ad_sigma_delta *sd)
+{
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+	int ret;
+	int i;
+
+	for (i = 0; i < st->num_channels; i++) {
+		ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), AD7124_CHANNEL_EN_MSK, 0, 2);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
 static const struct ad_sigma_delta_info ad7124_sigma_delta_info = {
 	.set_channel = ad7124_set_channel,
+	.append_status = ad7124_append_status,
+	.disable_all = ad7124_disable_all,
 	.set_mode = ad7124_set_mode,
 	.has_registers = true,
 	.addr_shift = 0,
 	.read_mask = BIT(6),
+	.status_ch_mask = GENMASK(3, 0),
 	.data_reg = AD7124_DATA,
-	.irq_flags = IRQF_TRIGGER_FALLING
+	.num_slots = 8,
+	.irq_flags = IRQF_TRIGGER_FALLING,
 };
 
 static int ad7124_read_raw(struct iio_dev *indio_dev,
···
 	.attrs = ad7124_attributes,
 };
 
+static int ad7124_update_scan_mode(struct iio_dev *indio_dev,
+				   const unsigned long *scan_mask)
+{
+	struct ad7124_state *st = iio_priv(indio_dev);
+	bool bit_set;
+	int ret;
+	int i;
+
+	mutex_lock(&st->cfgs_lock);
+	for (i = 0; i < st->num_channels; i++) {
+		bit_set = test_bit(i, scan_mask);
+		if (bit_set)
+			ret = __ad7124_set_channel(&st->sd, i);
+		else
+			ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), AD7124_CHANNEL_EN_MSK,
+						    0, 2);
+		if (ret < 0) {
+			mutex_unlock(&st->cfgs_lock);
+
+			return ret;
+		}
+	}
+
+	mutex_unlock(&st->cfgs_lock);
+
+	return 0;
+}
+
 static const struct iio_info ad7124_info = {
 	.read_raw = ad7124_read_raw,
 	.write_raw = ad7124_write_raw,
 	.debugfs_reg_access = &ad7124_reg_access,
 	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7124_update_scan_mode,
 	.attrs = &ad7124_attrs_group,
 };
 
···
 
 	st->chip_info = info;
 
-	ad_sd_init(&st->sd, indio_dev, spi, &ad7124_sigma_delta_info);
-
 	indio_dev->name = st->chip_info->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ad7124_info;
+
+	ret = ad_sd_init(&st->sd, indio_dev, spi, &ad7124_sigma_delta_info);
+	if (ret < 0)
+		return ret;
 
 	ret = ad7124_of_parse_channel_config(indio_dev, spi->dev.of_node);
 	if (ret < 0)

drivers/iio/adc/ad7192.c

···
 /* Mode Register Bit Designations (AD7192_REG_MODE) */
 #define AD7192_MODE_SEL(x)	(((x) & 0x7) << 21) /* Operation Mode Select */
 #define AD7192_MODE_SEL_MASK	(0x7 << 21) /* Operation Mode Select Mask */
-#define AD7192_MODE_DAT_STA	BIT(20) /* Status Register transmission */
+#define AD7192_MODE_STA(x)	(((x) & 0x1) << 20) /* Status Register transmission */
+#define AD7192_MODE_STA_MASK	BIT(20) /* Status Register transmission Mask */
 #define AD7192_MODE_CLKSRC(x)	(((x) & 0x3) << 18) /* Clock Source Select */
 #define AD7192_MODE_SINC3	BIT(15) /* SINC3 Filter Select */
 #define AD7192_MODE_ACX		BIT(14) /* AC excitation enable(AD7195 only)*/
···
 	bool sys_calib;
 	int ret, temp;
 
-	ret = strtobool(buf, &sys_calib);
+	ret = kstrtobool(buf, &sys_calib);
 	if (ret)
 		return ret;
 
···
 	return ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
 }
 
+static int ad7192_append_status(struct ad_sigma_delta *sd, bool append)
+{
+	struct ad7192_state *st = ad_sigma_delta_to_ad7192(sd);
+	unsigned int mode = st->mode;
+	int ret;
+
+	mode &= ~AD7192_MODE_STA_MASK;
+	mode |= AD7192_MODE_STA(append);
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, mode);
+	if (ret < 0)
+		return ret;
+
+	st->mode = mode;
+
+	return 0;
+}
+
+static int ad7192_disable_all(struct ad_sigma_delta *sd)
+{
+	struct ad7192_state *st = ad_sigma_delta_to_ad7192(sd);
+	u32 conf = st->conf;
+	int ret;
+
+	conf &= ~AD7192_CONF_CHAN_MASK;
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, conf);
+	if (ret < 0)
+		return ret;
+
+	st->conf = conf;
+
+	return 0;
+}
+
 static const struct ad_sigma_delta_info ad7192_sigma_delta_info = {
 	.set_channel = ad7192_set_channel,
+	.append_status = ad7192_append_status,
+	.disable_all = ad7192_disable_all,
 	.set_mode = ad7192_set_mode,
 	.has_registers = true,
 	.addr_shift = 3,
 	.read_mask = BIT(6),
+	.status_ch_mask = GENMASK(3, 0),
+	.num_slots = 4,
 	.irq_flags = IRQF_TRIGGER_FALLING,
 };
 
···
 	int ret;
 	bool val;
 
-	ret = strtobool(buf, &val);
+	ret = kstrtobool(buf, &val);
 	if (ret < 0)
 		return ret;
 
···
 	return -EINVAL;
 }
 
+static int ad7192_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *scan_mask)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	u32 conf = st->conf;
+	int ret;
+	int i;
+
+	conf &= ~AD7192_CONF_CHAN_MASK;
+	for_each_set_bit(i, scan_mask, 8)
+		conf |= AD7192_CONF_CHAN(i);
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, conf);
+	if (ret < 0)
+		return ret;
+
+	st->conf = conf;
+
+	return 0;
+}
+
 static const struct iio_info ad7192_info = {
 	.read_raw = ad7192_read_raw,
 	.write_raw = ad7192_write_raw,
···
 	.read_avail = ad7192_read_avail,
 	.attrs = &ad7192_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7192_update_scan_mode,
 };
 
 static const struct iio_info ad7195_info = {
···
 	.read_avail = ad7192_read_avail,
 	.attrs = &ad7195_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7192_update_scan_mode,
 };
 
 #define __AD719x_CHANNEL(_si, _channel1, _channel2, _address, _extend_name, \

drivers/iio/adc/ad7266.c

···
 	"ad0", "ad1", "ad2",
 };
 
+static void ad7266_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7266_probe(struct spi_device *spi)
 {
 	struct ad7266_platform_data *pdata = spi->dev.platform_data;
···
 		if (ret)
 			return ret;
 
+		ret = devm_add_action_or_reset(&spi->dev, ad7266_reg_disable, st->reg);
+		if (ret)
+			return ret;
+
 		ret = regulator_get_voltage(st->reg);
 		if (ret < 0)
-			goto error_disable_reg;
+			return ret;
 
 		st->vref_mv = ret / 1000;
 	} else {
···
 						      GPIOD_OUT_LOW);
 				if (IS_ERR(st->gpios[i])) {
 					ret = PTR_ERR(st->gpios[i]);
-					goto error_disable_reg;
+					return ret;
 				}
 			}
 		}
···
 		st->mode = AD7266_MODE_DIFF;
 	}
 
-	spi_set_drvdata(spi, indio_dev);
 	st->spi = spi;
 
 	indio_dev->name = spi_get_device_id(spi)->name;
···
 	spi_message_add_tail(&st->single_xfer[1], &st->single_msg);
 	spi_message_add_tail(&st->single_xfer[2], &st->single_msg);
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, &iio_pollfunc_store_time,
 		&ad7266_trigger_handler, &iio_triggered_buffer_setup_ops);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_buffer_cleanup;
-
-	return 0;
-
-error_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	if (!IS_ERR(st->reg))
-		regulator_disable(st->reg);
-
-	return ret;
-}
-
-static void ad7266_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7266_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (!IS_ERR(st->reg))
-		regulator_disable(st->reg);
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7266_id[] = {
···
 		.name	= "ad7266",
 	},
 	.probe		= ad7266_probe,
-	.remove		= ad7266_remove,
 	.id_table	= ad7266_id,
 };
 module_spi_driver(ad7266_driver);

drivers/iio/adc/ad7280a.c

···
 	bool readin;
 	int ret;
 
-	ret = strtobool(buf, &readin);
+	ret = kstrtobool(buf, &readin);
 	if (ret)
 		return ret;
 

drivers/iio/adc/ad_sigma_delta.c

···
  *  Author: Lars-Peter Clausen <[e-mail]>
  */
 
+#include <linux/align.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
···
 static int ad_sd_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
+	unsigned int i, slot, samples_buf_size;
 	unsigned int channel;
+	uint8_t *samples_buf;
 	int ret;
 
-	channel = find_first_bit(indio_dev->active_scan_mask,
-				 indio_dev->masklength);
-	ret = ad_sigma_delta_set_channel(sigma_delta,
-		indio_dev->channels[channel].address);
-	if (ret)
-		return ret;
+	if (sigma_delta->num_slots == 1) {
+		channel = find_first_bit(indio_dev->active_scan_mask,
+					 indio_dev->masklength);
+		ret = ad_sigma_delta_set_channel(sigma_delta,
+						 indio_dev->channels[channel].address);
+		if (ret)
+			return ret;
+		slot = 1;
+	} else {
+		/*
+		 * At this point update_scan_mode already enabled the required channels.
+		 * For sigma-delta sequencer drivers with multiple slots, an update_scan_mode
+		 * implementation is mandatory.
+		 */
+		slot = 0;
+		for_each_set_bit(i, indio_dev->active_scan_mask, indio_dev->masklength) {
+			sigma_delta->slots[slot] = indio_dev->channels[i].address;
+			slot++;
+		}
+	}
+
+	sigma_delta->active_slots = slot;
+	sigma_delta->current_slot = 0;
+
+	if (sigma_delta->active_slots > 1) {
+		ret = ad_sigma_delta_append_status(sigma_delta, true);
+		if (ret)
+			return ret;
+	}
+
+	samples_buf_size = ALIGN(slot * indio_dev->channels[0].scan_type.storagebits, 8);
+	samples_buf_size += sizeof(int64_t);
+	samples_buf = devm_krealloc(&sigma_delta->spi->dev, sigma_delta->samples_buf,
+				    samples_buf_size, GFP_KERNEL);
+	if (!samples_buf)
+		return -ENOMEM;
+
+	sigma_delta->samples_buf = samples_buf;
 
 	spi_bus_lock(sigma_delta->spi->master);
 	sigma_delta->bus_locked = true;
···
 	sigma_delta->keep_cs_asserted = false;
 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_IDLE);
 
+	if (sigma_delta->status_appended)
+		ad_sigma_delta_append_status(sigma_delta, false);
+
+	ad_sigma_delta_disable_all(sigma_delta);
 	sigma_delta->bus_locked = false;
 	return spi_bus_unlock(sigma_delta->spi->master);
 }
···
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
 	uint8_t *data = sigma_delta->rx_buf;
+	unsigned int transfer_size;
+	unsigned int sample_size;
+	unsigned int sample_pos;
+	unsigned int status_pos;
 	unsigned int reg_size;
 	unsigned int data_reg;
 
···
 	else
 		data_reg = AD_SD_REG_DATA;
 
+	/* Status word will be appended to the sample during transfer */
+	if (sigma_delta->status_appended)
+		transfer_size = reg_size + 1;
+	else
+		transfer_size = reg_size;
+
 	switch (reg_size) {
 	case 4:
 	case 2:
 	case 1:
-		ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size, &data[0]);
+		status_pos = reg_size;
+		ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[0]);
 		break;
 	case 3:
+		/*
+		 * Data array after transfer will look like (if status is appended):
+		 * data[] = { [0][sample][sample][sample][status] }
+		 * Keeping the first byte 0 shifts the status postion by 1 byte to the right.
+		 */
+		status_pos = reg_size + 1;
+
 		/* We store 24 bit samples in a 32 bit word. Keep the upper
 		 * byte set to zero. */
-		ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size, &data[1]);
+		ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[1]);
 		break;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data, pf->timestamp);
+	/*
+	 * For devices sampling only one channel at
+	 * once, there is no need for sample number tracking.
+	 */
+	if (sigma_delta->active_slots == 1) {
+		iio_push_to_buffers_with_timestamp(indio_dev, data, pf->timestamp);
+		goto irq_handled;
+	}
 
+	if (sigma_delta->status_appended) {
+		u8 converted_channel;
+
+		converted_channel = data[status_pos] & sigma_delta->info->status_ch_mask;
+		if (converted_channel != sigma_delta->slots[sigma_delta->current_slot]) {
+			/*
+			 * Desync occurred during continuous sampling of multiple channels.
+			 * Drop this incomplete sample and start from first channel again.
+			 */
+
+			sigma_delta->current_slot = 0;
+			goto irq_handled;
+		}
+	}
+
+	sample_size = indio_dev->channels[0].scan_type.storagebits / 8;
+	sample_pos = sample_size * sigma_delta->current_slot;
+	memcpy(&sigma_delta->samples_buf[sample_pos], data, sample_size);
+	sigma_delta->current_slot++;
+
+	if (sigma_delta->current_slot == sigma_delta->active_slots) {
+		sigma_delta->current_slot = 0;
+		iio_push_to_buffers_with_timestamp(indio_dev, sigma_delta->samples_buf,
+						   pf->timestamp);
+	}
+
+irq_handled:
 	iio_trigger_notify_done(indio_dev->trig);
 	sigma_delta->irq_dis = false;
 	enable_irq(sigma_delta->spi->irq);
···
 	return IRQ_HANDLED;
 }
 
+static bool ad_sd_validate_scan_mask(struct iio_dev *indio_dev, const unsigned long *mask)
+{
+	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
+
+	return bitmap_weight(mask, indio_dev->masklength) <= sigma_delta->num_slots;
+}
+
 static const struct iio_buffer_setup_ops ad_sd_buffer_setup_ops = {
 	.postenable = &ad_sd_buffer_postenable,
 	.postdisable = &ad_sd_buffer_postdisable,
-	.validate_scan_mask = &iio_validate_scan_mask_onehot,
+	.validate_scan_mask = &ad_sd_validate_scan_mask,
 };
 
 static irqreturn_t ad_sd_data_rdy_trig_poll(int irq, void *private)
···
  */
 int devm_ad_sd_setup_buffer_and_trigger(struct device *dev, struct iio_dev *indio_dev)
 {
+	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
 	int ret;
+
+	sigma_delta->slots = devm_kcalloc(dev, sigma_delta->num_slots,
+					  sizeof(*sigma_delta->slots), GFP_KERNEL);
+	if (!sigma_delta->slots)
+		return -ENOMEM;
 
 	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
 					      &iio_pollfunc_store_time,
···
 {
 	sigma_delta->spi = spi;
 	sigma_delta->info = info;
+
+	/* If the field is unset in ad_sigma_delta_info, asume there can only be 1 slot. */
+	if (!info->num_slots)
+		sigma_delta->num_slots = 1;
+	else
+		sigma_delta->num_slots = info->num_slots;
+
+	if (sigma_delta->num_slots > 1) {
+		if (!indio_dev->info->update_scan_mode) {
+			dev_err(&spi->dev, "iio_dev lacks update_scan_mode().\n");
+			return -EINVAL;
+		}
+
+		if (!info->disable_all) {
+			dev_err(&spi->dev, "ad_sigma_delta_info lacks disable_all().\n");
+			return -EINVAL;
+		}
+	}
+
 	iio_device_set_drvdata(indio_dev, sigma_delta);
 
 	return 0;

drivers/iio/adc/at91-sama5d2_adc.c

···
 		return at91_adc_configure_touch(st, true);
 
 	/* if we are not in triggered mode, we cannot enable the buffer. */
-	if (!(indio_dev->currentmode & INDIO_ALL_TRIGGERED_MODES))
+	if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES))
 		return -EINVAL;
 
 	/* we continue with the triggered buffer */
···
 		return at91_adc_configure_touch(st, false);
 
 	/* if we are not in triggered mode, nothing to do here */
-	if (!(indio_dev->currentmode & INDIO_ALL_TRIGGERED_MODES))
+	if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES))
 		return -EINVAL;
 
 	/*

drivers/iio/adc/ina2xx-adc.c

···
 	bool val;
 	int ret;
 
-	ret = strtobool(buf, &val);
+	ret = kstrtobool(buf, &val);
 	if (ret)
 		return ret;
 
···
 	indio_dev->name = id->name;
 
 	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &ina2xx_setup_ops);
 	if (ret)
 		return ret;

drivers/iio/adc/palmas_gpadc.c

···
 					adc->adc_info[adc_chan].gain_error;
 
 	if (val < 0) {
-		dev_err(adc->dev, "Mismatch with calibration\n");
+		if (val < -10)
+			dev_err(adc->dev, "Mismatch with calibration var = %d\n", val);
 		return 0;
 	}
 

drivers/iio/adc/sc27xx_adc.c

···
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 
 /* PMIC global registers definition */
-#define SC27XX_MODULE_EN		0xc08
+#define SC2730_MODULE_EN		0x1808
+#define SC2731_MODULE_EN		0xc08
 #define SC27XX_MODULE_ADC_EN		BIT(5)
-#define SC27XX_ARM_CLK_EN		0xc10
+#define SC2721_ARM_CLK_EN		0xc0c
+#define SC2730_ARM_CLK_EN		0x180c
+#define SC2731_ARM_CLK_EN		0xc10
 #define SC27XX_CLK_ADC_EN		BIT(5)
 #define SC27XX_CLK_ADC_CLK_EN		BIT(6)
 
···
 
 /* Bits and mask definition for SC27XX_ADC_CH_CFG register */
 #define SC27XX_ADC_CHN_ID_MASK		GENMASK(4, 0)
-#define SC27XX_ADC_SCALE_MASK		GENMASK(10, 8)
-#define SC27XX_ADC_SCALE_SHIFT		8
+#define SC27XX_ADC_SCALE_MASK		GENMASK(10, 9)
+#define SC2721_ADC_SCALE_MASK		BIT(5)
+#define SC27XX_ADC_SCALE_SHIFT		9
+#define SC2721_ADC_SCALE_SHIFT		5
 
 /* Bits definitions for SC27XX_ADC_INT_EN registers */
 #define SC27XX_ADC_IRQ_EN		BIT(0)
···
 #define SC27XX_RATIO_NUMERATOR_OFFSET	16
 #define SC27XX_RATIO_DENOMINATOR_MASK	GENMASK(15, 0)
 
+/* ADC specific channel reference voltage 3.5V */
+#define SC27XX_ADC_REFVOL_VDD35		3500000
+
+/* ADC default channel reference voltage is 2.8V */
+#define SC27XX_ADC_REFVOL_VDD28		2800000
+
 struct sc27xx_adc_data {
 	struct device *dev;
+	struct regulator *volref;
 	struct regmap *regmap;
 	/*
 	 * One hardware spinlock to synchronize between the multiple
···
 	int channel_scale[SC27XX_ADC_CHANNEL_MAX];
 	u32 base;
 	int irq;
+	const struct sc27xx_adc_variant_data *var_data;
+};
+
+/*
+ * Since different PMICs of SC27xx series can have different
+ * address and ratio, we should save ratio config and base
+ * in the device data structure.
+ */
+struct sc27xx_adc_variant_data {
+	u32 module_en;
+	u32 clk_en;
+	u32 scale_shift;
+	u32 scale_mask;
+	const struct sc27xx_adc_linear_graph *bscale_cal;
+	const struct sc27xx_adc_linear_graph *sscale_cal;
+	void (*init_scale)(struct sc27xx_adc_data *data);
+	int (*get_ratio)(int channel, int scale);
+	bool set_volref;
 };
 
 struct sc27xx_adc_linear_graph {
···
 	100, 341,
 };
 
+static const struct sc27xx_adc_linear_graph sc2731_big_scale_graph_calib = {
+	4200, 850,
+	3600, 728,
+};
+
+static const struct sc27xx_adc_linear_graph sc2731_small_scale_graph_calib = {
+	1000, 838,
+	100, 84,
+};
+
 static const struct sc27xx_adc_linear_graph big_scale_graph_calib = {
 	4200, 856,
 	3600, 733,
···
 	return ((calib_data & 0xff) + calib_adc - 128) * 4;
 }
 
-static int sc27xx_adc_scale_calibration(struct sc27xx_adc_data *data,
-					bool big_scale)
+/* get the adc nvmem cell calibration data */
+static int adc_nvmem_cell_calib_data(struct sc27xx_adc_data *data, const char *cell_name)
 {
-	const struct sc27xx_adc_linear_graph *calib_graph;
-	struct sc27xx_adc_linear_graph *graph;
 	struct nvmem_cell *cell;
-	const char *cell_name;
-	u32 calib_data = 0;
 	void *buf;
+	u32 origin_calib_data = 0;
 	size_t len;
 
-	if (big_scale) {
-		calib_graph = &big_scale_graph_calib;
-		graph = &big_scale_graph;
-		cell_name = "big_scale_calib";
-	} else {
-		calib_graph = &small_scale_graph_calib;
-		graph = &small_scale_graph;
-		cell_name = "small_scale_calib";
-	}
+	if (!data)
+		return -EINVAL;
 
 	cell = nvmem_cell_get(data->dev, cell_name);
 	if (IS_ERR(cell))
 		return PTR_ERR(cell);
 
 	buf = nvmem_cell_read(cell, &len);
-	nvmem_cell_put(cell);
-
-	if (IS_ERR(buf))
+	if (IS_ERR(buf)) {
+		nvmem_cell_put(cell);
 		return PTR_ERR(buf);
+	}
 
-	memcpy(&calib_data, buf, min(len, sizeof(u32)));
+	memcpy(&origin_calib_data, buf, min(len, sizeof(u32)));
+
+	kfree(buf);
+	nvmem_cell_put(cell);
+	return origin_calib_data;
+}
+
+static int sc27xx_adc_scale_calibration(struct sc27xx_adc_data *data,
+					bool big_scale)
+{
+	const struct sc27xx_adc_linear_graph *calib_graph;
+	struct sc27xx_adc_linear_graph *graph;
+	const char *cell_name;
+	u32 calib_data = 0;
+
+	if (big_scale) {
+		calib_graph = data->var_data->bscale_cal;
+		graph = &big_scale_graph;
+		cell_name = "big_scale_calib";
+	} else {
+		calib_graph = data->var_data->sscale_cal;
+		graph = &small_scale_graph;
+		cell_name = "small_scale_calib";
+	}
+
+	calib_data = adc_nvmem_cell_calib_data(data, cell_name);
 
 	/* Only need to calibrate the adc values in the linear graph. */
 	graph->adc0 = sc27xx_adc_get_calib_data(calib_data, calib_graph->adc0);
 	graph->adc1 = sc27xx_adc_get_calib_data(calib_data >> 8,
 						calib_graph->adc1);
 
-	kfree(buf);
 	return 0;
 }
 
-static int sc27xx_adc_get_ratio(int channel, int scale)
+static int sc2720_adc_get_ratio(int channel, int scale)
+{
+	switch (channel) {
+	case 14:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(68, 900);
+		case 1:
+			return SC27XX_VOLT_RATIO(68, 1760);
+		case 2:
+			return SC27XX_VOLT_RATIO(68, 2327);
+		case 3:
+			return SC27XX_VOLT_RATIO(68, 3654);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 16:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(48, 100);
+		case 1:
+			return SC27XX_VOLT_RATIO(480, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(480, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(48, 406);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 21:
+	case 22:
+	case 23:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(3, 8);
+		case 1:
+			return SC27XX_VOLT_RATIO(375, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(375, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(300, 3248);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	default:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(1, 1);
+		case 1:
+			return SC27XX_VOLT_RATIO(1000, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(1000, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(100, 406);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	}
+	return SC27XX_VOLT_RATIO(1, 1);
+}
+
+static int sc2721_adc_get_ratio(int channel, int scale)
+{
+	switch (channel) {
+	case 1:
+	case 2:
+	case 3:
+	case 4:
+		return scale ? SC27XX_VOLT_RATIO(400, 1025) :
+			SC27XX_VOLT_RATIO(1, 1);
+	case 5:
+		return SC27XX_VOLT_RATIO(7, 29);
+	case 7:
+	case 9:
+		return scale ? SC27XX_VOLT_RATIO(100, 125) :
+			SC27XX_VOLT_RATIO(1, 1);
+	case 14:
+		return SC27XX_VOLT_RATIO(68, 900);
+	case 16:
+		return SC27XX_VOLT_RATIO(48, 100);
+	case 19:
+		return SC27XX_VOLT_RATIO(1, 3);
+	default:
+		return SC27XX_VOLT_RATIO(1, 1);
+	}
+	return SC27XX_VOLT_RATIO(1, 1);
+}
+
+static int sc2730_adc_get_ratio(int channel, int scale)
+{
+	switch (channel) {
+	case 14:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(68, 900);
+		case 1:
+			return SC27XX_VOLT_RATIO(68, 1760);
+		case 2:
+			return SC27XX_VOLT_RATIO(68, 2327);
+		case 3:
+			return SC27XX_VOLT_RATIO(68, 3654);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 15:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(1, 3);
+		case 1:
+			return SC27XX_VOLT_RATIO(1000, 5865);
+		case 2:
+			return SC27XX_VOLT_RATIO(500, 3879);
+		case 3:
+			return SC27XX_VOLT_RATIO(500, 6090);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 16:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(48, 100);
+		case 1:
+			return SC27XX_VOLT_RATIO(480, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(480, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(48, 406);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 21:
+	case 22:
+	case 23:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(3, 8);
+		case 1:
+			return SC27XX_VOLT_RATIO(375, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(375, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(300, 3248);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	default:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(1, 1);
+		case 1:
+			return SC27XX_VOLT_RATIO(1000, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(1000, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(1000, 4060);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	}
+	return SC27XX_VOLT_RATIO(1, 1);
+}
+
+static int sc2731_adc_get_ratio(int channel, int scale)
 {
 	switch (channel) {
 	case 1:
···
 	return SC27XX_VOLT_RATIO(1, 1);
 }
 
+/*
+ * According to the datasheet set specific value on some channel.
+ */
+static void sc2720_adc_scale_init(struct sc27xx_adc_data *data)
+{
+	int i;
+
+	for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
+		switch (i) {
+		case 5:
+			data->channel_scale[i] = 3;
+			break;
+		case 7:
+		case 9:
+			data->channel_scale[i] = 2;
+			break;
+		case 13:
+			data->channel_scale[i] = 1;
+			break;
+		case 19:
+		case 30:
+		case 31:
+			data->channel_scale[i] = 3;
+			break;
+		default:
+			data->channel_scale[i] = 0;
+			break;
+		}
+	}
+}
+
+static void sc2730_adc_scale_init(struct sc27xx_adc_data *data)
+{
+	int i;
+
+	for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
+		switch (i) {
+		case 5:
+		case 10:
+		case 19:
+		case 30:
+		case 31:
+			data->channel_scale[i] = 3;
+			break;
+		case 7:
+		case 9:
+			data->channel_scale[i] = 2;
+			break;
+		case 13:
+			data->channel_scale[i] = 1;
+			break;
+		default:
+			data->channel_scale[i] = 0;
+			break;
+		}
+	}
+}
+
+static void sc2731_adc_scale_init(struct sc27xx_adc_data *data)
+{
+	int i;
+	/*
+	 * In the current software design, SC2731 support 2 scales,
+	 * channels 5 uses big scale, others use smale.
+	 */
+	for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
+		switch (i) {
+		case 5:
+			data->channel_scale[i] = 1;
+			break;
+		default:
+			data->channel_scale[i] = 0;
+			break;
+		}
+	}
+}
+
 static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel,
 			   int scale, int *val)
 {
-	int ret;
+	int ret, ret_volref;
 	u32 tmp, value, status;
 
 	ret = hwspin_lock_timeout_raw(data->hwlock, SC27XX_ADC_HWLOCK_TIMEOUT);
···
 		return ret;
 	}
 
+	/*
+	 * According to the sc2721 chip data sheet, the reference voltage of
+	 * specific channel 30 and channel 31 in ADC module needs to be set from
+	 * the default 2.8v to 3.5v.
+	 */
+	if ((data->var_data->set_volref) && (channel == 30 || channel == 31)) {
+		ret = regulator_set_voltage(data->volref,
+					SC27XX_ADC_REFVOL_VDD35,
+					SC27XX_ADC_REFVOL_VDD35);
+		if (ret) {
+			dev_err(data->dev, "failed to set the volref 3.5v\n");
+			goto unlock_adc;
+		}
+	}
+
 	ret = regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CTL,
 				 SC27XX_ADC_EN, SC27XX_ADC_EN);
 	if (ret)
-		goto unlock_adc;
+		goto regulator_restore;
 
 	ret = regmap_update_bits(data->regmap, data->base + SC27XX_ADC_INT_CLR,
 				 SC27XX_ADC_IRQ_CLR, SC27XX_ADC_IRQ_CLR);
···
 		goto disable_adc;
 
 	/* Configure the channel id and scale */
-	tmp = (scale << SC27XX_ADC_SCALE_SHIFT) & SC27XX_ADC_SCALE_MASK;
+	tmp = (scale << data->var_data->scale_shift) & data->var_data->scale_mask;
 	tmp |= channel & SC27XX_ADC_CHN_ID_MASK;
 	ret = regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CH_CFG,
-				 SC27XX_ADC_CHN_ID_MASK | SC27XX_ADC_SCALE_MASK,
+				 SC27XX_ADC_CHN_ID_MASK |
+				 data->var_data->scale_mask,
 				 tmp);
 	if (ret)
 		goto disable_adc;
···
 disable_adc:
 	regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CTL,
 			   SC27XX_ADC_EN, 0);
+regulator_restore:
+	if ((data->var_data->set_volref) && (channel == 30 || channel == 31)) {
+		ret_volref = regulator_set_voltage(data->volref,
+					    SC27XX_ADC_REFVOL_VDD28,
+					    SC27XX_ADC_REFVOL_VDD28);
+		if (ret_volref) {
+			dev_err(data->dev, "failed to set the volref 2.8v,ret_volref = 0x%x\n",
+					 ret_volref);
+			ret = ret || ret_volref;
+		}
+	}
 unlock_adc:
 	hwspin_unlock_raw(data->hwlock);
 
···
 				  int channel, int scale,
 				  u32 *div_numerator, u32 *div_denominator)
 {
-	u32 ratio = sc27xx_adc_get_ratio(channel, scale);
+	u32 ratio;
 
+	ratio = data->var_data->get_ratio(channel, scale);
 	*div_numerator = ratio >> SC27XX_RATIO_NUMERATOR_OFFSET;
 	*div_denominator = ratio & SC27XX_RATIO_DENOMINATOR_MASK;
 }
 
-static int sc27xx_adc_to_volt(struct sc27xx_adc_linear_graph *graph,
+static int adc_to_volt(struct sc27xx_adc_linear_graph *graph,
 			      int raw_adc)
 {
 	int tmp;
···
 	tmp = (graph->volt0 - graph->volt1) * (raw_adc - graph->adc1);
 	tmp /= (graph->adc0 - graph->adc1);
 	tmp += graph->volt1;
+
+	return tmp;
+}
+
+static int sc27xx_adc_to_volt(struct sc27xx_adc_linear_graph *graph,
+			      int raw_adc)
+{
+	int tmp;
+
+	tmp = adc_to_volt(graph, raw_adc);
 
 	return tmp < 0 ? 0 : tmp;
 }
···
 {
 	int ret;
 
-	ret = regmap_update_bits(data->regmap, SC27XX_MODULE_EN,
+	ret = regmap_update_bits(data->regmap, data->var_data->module_en,
 				 SC27XX_MODULE_ADC_EN, SC27XX_MODULE_ADC_EN);
 	if (ret)
 		return ret;
 
 	/* Enable ADC work clock and controller clock */
-	ret = regmap_update_bits(data->regmap, SC27XX_ARM_CLK_EN,
+	ret = regmap_update_bits(data->regmap, data->var_data->clk_en,
 				 SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN,
 				 SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN);
 	if (ret)
···
 	return 0;
 
 disable_clk:
-	regmap_update_bits(data->regmap, SC27XX_ARM_CLK_EN,
+	regmap_update_bits(data->regmap, data->var_data->clk_en,
 			   SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN, 0);
 disable_adc:
-	regmap_update_bits(data->regmap, SC27XX_MODULE_EN,
+	regmap_update_bits(data->regmap, data->var_data->module_en,
 			   SC27XX_MODULE_ADC_EN, 0);
 
 	return ret;
···
 	struct sc27xx_adc_data *data = _data;
 
 	/* Disable ADC work clock and controller clock */
-	regmap_update_bits(data->regmap, SC27XX_ARM_CLK_EN,
+	regmap_update_bits(data->regmap, data->var_data->clk_en,
 			   SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN, 0);
 
-	regmap_update_bits(data->regmap, SC27XX_MODULE_EN,
+	regmap_update_bits(data->regmap, data->var_data->module_en,
 			   SC27XX_MODULE_ADC_EN, 0);
 }
+
+static const struct sc27xx_adc_variant_data sc2731_data = {
+	.module_en = SC2731_MODULE_EN,
+	.clk_en = SC2731_ARM_CLK_EN,
+	.scale_shift = SC27XX_ADC_SCALE_SHIFT,
+	.scale_mask = SC27XX_ADC_SCALE_MASK,
+	.bscale_cal = &sc2731_big_scale_graph_calib,
+	.sscale_cal = &sc2731_small_scale_graph_calib,
+	.init_scale = sc2731_adc_scale_init,
+	.get_ratio = sc2731_adc_get_ratio,
+	.set_volref = false,
+};
+
+static const struct sc27xx_adc_variant_data sc2730_data = {
+	.module_en = SC2730_MODULE_EN,
+	.clk_en = SC2730_ARM_CLK_EN,
+	.scale_shift = SC27XX_ADC_SCALE_SHIFT,
+	.scale_mask = SC27XX_ADC_SCALE_MASK,
+	.bscale_cal = &big_scale_graph_calib,
+	.sscale_cal = &small_scale_graph_calib,
+	.init_scale = sc2730_adc_scale_init,
+	.get_ratio = sc2730_adc_get_ratio,
+	.set_volref = false,
+};
+
+static const struct sc27xx_adc_variant_data sc2721_data = {
+	.module_en = SC2731_MODULE_EN,
+	.clk_en = SC2721_ARM_CLK_EN,
+	.scale_shift = SC2721_ADC_SCALE_SHIFT,
+	.scale_mask = SC2721_ADC_SCALE_MASK,
+	.bscale_cal = &sc2731_big_scale_graph_calib,
+	.sscale_cal = &sc2731_small_scale_graph_calib,
+	.init_scale = sc2731_adc_scale_init,
+	.get_ratio = sc2721_adc_get_ratio,
+	.set_volref = true,
+};
+
+static const struct sc27xx_adc_variant_data sc2720_data = {
+	.module_en = SC2731_MODULE_EN,
+	.clk_en = SC2721_ARM_CLK_EN,
+	.scale_shift = SC27XX_ADC_SCALE_SHIFT,
+	.scale_mask = SC27XX_ADC_SCALE_MASK,
+	.bscale_cal = &big_scale_graph_calib,
+	.sscale_cal = &small_scale_graph_calib,
+	.init_scale = sc2720_adc_scale_init,
+	.get_ratio = sc2720_adc_get_ratio,
+	.set_volref = false,
+};
 
 static int sc27xx_adc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct sc27xx_adc_data *sc27xx_data;
+	const struct sc27xx_adc_variant_data *pdata;
 	struct iio_dev *indio_dev;
 	int ret;
+
+	pdata = of_device_get_match_data(dev);
+	if (!pdata) {
+		dev_err(dev, "No matching driver data found\n");
+		return -EINVAL;
+	}
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*sc27xx_data));
 	if (!indio_dev)
···
 	}
 
 	sc27xx_data->dev = dev;
+	if (pdata->set_volref) {
+		sc27xx_data->volref = devm_regulator_get(dev, "vref");
+		if (IS_ERR(sc27xx_data->volref)) {
+			ret = PTR_ERR(sc27xx_data->volref);
+			return dev_err_probe(dev, ret, "failed to get ADC volref\n");
+		}
+	}
+
+	sc27xx_data->var_data = pdata;
+	sc27xx_data->var_data->init_scale(sc27xx_data);
 
 	ret = sc27xx_adc_enable(sc27xx_data);
 	if (ret) {
···
 }
 
 static const struct of_device_id sc27xx_adc_of_match[] = {
-	{ .compatible = "sprd,sc2731-adc", },
+	{ .compatible = "sprd,sc2731-adc", .data = &sc2731_data},
+	{ .compatible = "sprd,sc2730-adc", .data = &sc2730_data},
+	{ .compatible = "sprd,sc2721-adc", .data = &sc2721_data},
+	{ .compatible = "sprd,sc2720-adc", .data = &sc2720_data},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, sc27xx_adc_of_match);

drivers/iio/adc/stm32-dfsdm-adc.c

···
 	 * In continuous mode, use fast mode configuration,
 	 * if it provides a better resolution.
 	 */
-	if (adc->nconv == 1 && !trig &&
-	    (indio_dev->currentmode & INDIO_BUFFER_SOFTWARE)) {
+	if (adc->nconv == 1 && !trig && iio_buffer_enabled(indio_dev)) {
 		if (fl->flo[1].res >= fl->flo[0].res) {
 			fl->fast = 1;
 			flo = &fl->flo[1];
···
 		cr1 = DFSDM_CR1_RCH(chan->channel);
 
 		/* Continuous conversions triggered by SPI clk in buffer mode */
-		if (indio_dev->currentmode & INDIO_BUFFER_SOFTWARE)
+		if (iio_buffer_enabled(indio_dev))
 			cr1 |= DFSDM_CR1_RCONT(1);
 
 		cr1 |= DFSDM_CR1_RSYNC(fl->sync_mode);

drivers/iio/adc/stmpe-adc.c

···
 static int stmpe_read_voltage(struct stmpe_adc *info,
 		struct iio_chan_spec const *chan, int *val)
 {
-	long ret;
+	unsigned long ret;
 
 	mutex_lock(&info->lock);
 
···
 
 	ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);
 
-	if (ret <= 0) {
+	if (ret == 0) {
 		stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_STA,
 				STMPE_ADC_CH(info->channel));
 		mutex_unlock(&info->lock);
···
 static int stmpe_read_temp(struct stmpe_adc *info,
 		struct iio_chan_spec const *chan, int *val)
 {
-	long ret;
+	unsigned long ret;
 
 	mutex_lock(&info->lock);
 
···
 
 	ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);
 
-	if (ret <= 0) {
+	if (ret == 0) {
 		mutex_unlock(&info->lock);
 		return -ETIMEDOUT;
 	}
···
 
 static SIMPLE_DEV_PM_OPS(stmpe_adc_pm_ops, NULL, stmpe_adc_resume);
 
-static struct platform_driver stmpe_adc_driver = {
-	.probe		= stmpe_adc_probe,
-	.driver		= {
-		.name	= "stmpe-adc",
-		.pm	= &stmpe_adc_pm_ops,
-	},
-};
-module_platform_driver(stmpe_adc_driver);
-
 static const struct of_device_id stmpe_adc_ids[] = {
 	{ .compatible = "st,stmpe-adc", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, stmpe_adc_ids);
+
+static struct platform_driver stmpe_adc_driver = {
+	.probe		= stmpe_adc_probe,
+	.driver		= {
+		.name	= "stmpe-adc",
+		.pm	= &stmpe_adc_pm_ops,
+		.of_match_table = stmpe_adc_ids,
+	},
+};
+module_platform_driver(stmpe_adc_driver);
 
 MODULE_AUTHOR("Stefan Agner <[e-mail]>");
 MODULE_DESCRIPTION("STMPEXXX ADC driver");

drivers/iio/adc/ti-ads1015.c

···
 #define ADS1015_DEFAULT_DATA_RATE	4
 #define ADS1015_DEFAULT_CHAN		0
 
-enum chip_ids {
-	ADSXXXX = 0,
-	ADS1015,
-	ADS1115,
+struct ads1015_chip_data {
+	struct iio_chan_spec const	*channels;
+	int				num_channels;
+	const struct iio_info		*info;
+	const int			*data_rate;
+	const int			data_rate_len;
+	const int			*scale;
+	const int			scale_len;
+	bool				has_comparator;
 };
 
 enum ads1015_channels {
···
 	ADS1015_TIMESTAMP,
 };
 
-static const unsigned int ads1015_data_rate[] = {
+static const int ads1015_data_rate[] = {
 	128, 250, 490, 920, 1600, 2400, 3300, 3300
 };
 
-static const unsigned int ads1115_data_rate[] = {
+static const int ads1115_data_rate[] = {
 	8, 16, 32, 64, 128, 250, 475, 860
 };
 
···
  * Translation from PGA bits to full-scale positive and negative input voltage
  * range in mV
  */
-static int ads1015_fullscale_range[] = {
+static const int ads1015_fullscale_range[] = {
 	6144, 4096, 2048, 1024, 512, 256, 256, 256
+};
+
+static const int ads1015_scale[] = {	/* 12bit ADC */
+	256, 11,
+	512, 11,
+	1024, 11,
+	2048, 11,
+	4096, 11,
+	6144, 11
+};
+
+static const int ads1115_scale[] = {	/* 16bit ADC */
+	256, 15,
+	512, 15,
+	1024, 15,
+	2048, 15,
+	4096, 15,
+	6144, 15
 };
 
 /*
···
 	},
 };
 
-#define ADS1015_V_CHAN(_chan, _addr) {				\
+/*
+ * Compile-time check whether _fitbits can accommodate up to _testbits
+ * bits. Returns _fitbits on success, fails to compile otherwise.
+ *
+ * The test works such that it multiplies constant _fitbits by constant
+ * double-negation of size of a non-empty structure, i.e. it multiplies
+ * constant _fitbits by constant 1 in each successful compilation case.
+ * The non-empty structure may contain C11 _Static_assert(), make use of
+ * this and place the kernel variant of static assert in there, so that
+ * it performs the compile-time check for _testbits <= _fitbits. Note
+ * that it is not possible to directly use static_assert in compound
+ * statements, hence this convoluted construct.
+ */
+#define FIT_CHECK(_testbits, _fitbits)					\
+	(								\
+		(_fitbits) *						\
+		!!sizeof(struct {					\
+			static_assert((_testbits) <= (_fitbits));	\
+			int pad;					\
+		})							\
+	)
+
+#define ADS1015_V_CHAN(_chan, _addr, _realbits, _shift, _event_spec, _num_event_specs) { \
 	.type = IIO_VOLTAGE,					\
 	.indexed = 1,						\
 	.address = _addr,					\
···
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
 				BIT(IIO_CHAN_INFO_SCALE) |	\
 				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+	.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_SCALE) |	\
+				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
 	.scan_index = _addr,					\
 	.scan_type = {						\
 		.sign = 's',					\
-		.realbits = 12,					\
-		.storagebits = 16,				\
-		.shift = 4,					\
+		.realbits = (_realbits),			\
+		.storagebits = FIT_CHECK((_realbits) + (_shift), 16),	\
+		.shift = (_shift),				\
 		.endianness = IIO_CPU,				\
 	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
+	.event_spec = (_event_spec),				\
+	.num_event_specs = (_num_event_specs),			\
 	.datasheet_name = "AIN"#_chan,				\
 }
 
-#define ADS1015_V_DIFF_CHAN(_chan, _chan2, _addr) {		\
+#define ADS1015_V_DIFF_CHAN(_chan, _chan2, _addr, _realbits, _shift, _event_spec, _num_event_specs) { \
 	.type = IIO_VOLTAGE,					\
 	.differential = 1,					\
 	.indexed = 1,						\
···
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
 				BIT(IIO_CHAN_INFO_SCALE) |	\
 				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
-	.scan_index = _addr,					\
-	.scan_type = {						\
-		.sign = 's',					\
-		.realbits = 12,					\
-		.storagebits = 16,				\
-		.shift = 4,					\
-		.endianness = IIO_CPU,				\
-	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
-	.datasheet_name = "AIN"#_chan"-AIN"#_chan2,		\
-}
-
-#define ADS1115_V_CHAN(_chan, _addr) {				\
-	.type = IIO_VOLTAGE,					\
-	.indexed = 1,						\
-	.address = _addr,					\
-	.channel = _chan,					\
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+	.info_mask_shared_by_all_available =			\
 				BIT(IIO_CHAN_INFO_SCALE) |	\
 				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
 	.scan_index = _addr,					\
 	.scan_type = {						\
 		.sign = 's',					\
-		.realbits = 16,					\
-		.storagebits = 16,				\
+		.realbits = (_realbits),			\
+		.storagebits = FIT_CHECK((_realbits) + (_shift), 16),	\
+		.shift = (_shift),				\
 		.endianness = IIO_CPU,				\
 	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
-	.datasheet_name = "AIN"#_chan,				\
-}
-
-#define ADS1115_V_DIFF_CHAN(_chan, _chan2, _addr) {		\
-	.type = IIO_VOLTAGE,					\
-	.differential = 1,					\
-	.indexed = 1,						\
-	.address = _addr,					\
-	.channel = _chan,					\
-	.channel2 = _chan2,					\
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
-				BIT(IIO_CHAN_INFO_SCALE) |	\
-				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
-	.scan_index = _addr,					\
-	.scan_type = {						\
-		.sign = 's',					\
-		.realbits = 16,					\
-		.storagebits = 16,				\
-		.endianness = IIO_CPU,				\
-	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
+	.event_spec = (_event_spec),				\
+	.num_event_specs = (_num_event_specs),			\
 	.datasheet_name = "AIN"#_chan"-AIN"#_chan2,		\
 }
 
···
 	unsigned int comp_mode;
 	struct ads1015_thresh_data thresh_data[ADS1015_CHANNELS];
 
-	unsigned int *data_rate;
+	const struct ads1015_chip_data *chip;
 	/*
 	 * Set to true when the ADC is switched to the continuous-conversion
 	 * mode and exits from a power-down state.  This flag is used to avoid
···
 	data->event_channel = ADS1015_CHANNELS;
 }
 
-static bool ads1015_is_writeable_reg(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case ADS1015_CFG_REG:
-	case ADS1015_LO_THRESH_REG:
-	case ADS1015_HI_THRESH_REG:
-		return true;
-	default:
-		return false;
-	}
-}
+static const struct regmap_range ads1015_writeable_ranges[] = {
+	regmap_reg_range(ADS1015_CFG_REG, ADS1015_HI_THRESH_REG),
+};
+
+static const struct regmap_access_table ads1015_writeable_table = {
+	.yes_ranges = ads1015_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(ads1015_writeable_ranges),
+};
 
 static const struct regmap_config ads1015_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 16,
 	.max_register = ADS1015_HI_THRESH_REG,
-	.writeable_reg = ads1015_is_writeable_reg,
+	.wr_table = &ads1015_writeable_table,
+};
+
+static const struct regmap_range tla2024_writeable_ranges[] = {
+	regmap_reg_range(ADS1015_CFG_REG, ADS1015_CFG_REG),
+};
+
+static const struct regmap_access_table tla2024_writeable_table = {
+	.yes_ranges = tla2024_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(tla2024_writeable_ranges),
+};
+
+static const struct regmap_config tla2024_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = ADS1015_CFG_REG,
+	.wr_table = &tla2024_writeable_table,
 };
 
 static const struct iio_chan_spec ads1015_channels[] = {
-	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1),
-	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3),
-	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3),
-	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3),
-	ADS1015_V_CHAN(0, ADS1015_AIN0),
-	ADS1015_V_CHAN(1, ADS1015_AIN1),
-	ADS1015_V_CHAN(2, ADS1015_AIN2),
-	ADS1015_V_CHAN(3, ADS1015_AIN3),
+	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(0, ADS1015_AIN0, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(1, ADS1015_AIN1, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(2, ADS1015_AIN2, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(3, ADS1015_AIN3, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
 	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
 };
 
 static const struct iio_chan_spec ads1115_channels[] = {
-	ADS1115_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1),
-	ADS1115_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3),
-	ADS1115_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3),
-	ADS1115_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3),
-	ADS1115_V_CHAN(0, ADS1015_AIN0),
-	ADS1115_V_CHAN(1, ADS1015_AIN1),
-	ADS1115_V_CHAN(2, ADS1015_AIN2),
-	ADS1115_V_CHAN(3, ADS1015_AIN3),
+	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(0, ADS1015_AIN0, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(1, ADS1015_AIN1, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(2, ADS1015_AIN2, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(3, ADS1015_AIN3, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
 	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
 };
+
+static const struct iio_chan_spec tla2024_channels[] = {
+	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1, 12, 4, NULL, 0),
+	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3, 12, 4, NULL, 0),
+	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3, 12, 4, NULL, 0),
+	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(0, ADS1015_AIN0, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(1, ADS1015_AIN1, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(2, ADS1015_AIN2, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(3, ADS1015_AIN3, 12, 4, NULL, 0),
+	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
+};
+
 
 #ifdef CONFIG_PM
 static int ads1015_set_power_state(struct ads1015_data *data, bool on)
···
 static
 int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val)
 {
+	const int *data_rate = data->chip->data_rate;
 	int ret, pga, dr, dr_old, conv_time;
 	unsigned int old, mask, cfg;
 
···
 	}
 	if (data->conv_invalid) {
 		dr_old = (old & ADS1015_CFG_DR_MASK) >> ADS1015_CFG_DR_SHIFT;
-		conv_time = DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr_old]);
-		conv_time += DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr]);
+		conv_time = DIV_ROUND_UP(USEC_PER_SEC, data_rate[dr_old]);
+		conv_time += DIV_ROUND_UP(USEC_PER_SEC, data_rate[dr]);
 		conv_time += conv_time / 10; /* 10% internal clock inaccuracy */
 		usleep_range(conv_time, conv_time + 1);
 		data->conv_invalid = false;
···
 {
 	int i;
 
-	for (i = 0; i < ARRAY_SIZE(ads1015_data_rate); i++) {
-		if (data->data_rate[i] == rate) {
+	for (i = 0; i < data->chip->data_rate_len; i++) {
+		if (data->chip->data_rate[i] == rate) {
 			data->channel_data[chan].data_rate = i;
 			return 0;
 		}
 	}
 
 	return -EINVAL;
+}
+
+static int ads1015_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long mask)
+{
+	struct ads1015_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_VOLTAGE)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*type = IIO_VAL_FRACTIONAL_LOG2;
+		*vals =  data->chip->scale;
+		*length = data->chip->scale_len;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT;
+		*vals = data->chip->data_rate;
+		*length = data->chip->data_rate_len;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
 }
 
 static int ads1015_read_raw(struct iio_dev *indio_dev,
···
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		idx = data->channel_data[chan->address].data_rate;
-		*val = data->data_rate[idx];
+		*val = data->chip->data_rate[idx];
 		ret = IIO_VAL_INT;
 		break;
 	default:
···
 		dr = data->channel_data[chan->address].data_rate;
 		comp_queue = data->thresh_data[chan->address].comp_queue;
 		period = ads1015_comp_queue[comp_queue] *
-			USEC_PER_SEC / data->data_rate[dr];
+			USEC_PER_SEC / data->chip->data_rate[dr];
 
 		*val = period / USEC_PER_SEC;
 		*val2 = period % USEC_PER_SEC;
···
 	int val2)
 {
 	struct ads1015_data *data = iio_priv(indio_dev);
+	const int *data_rate = data->chip->data_rate;
 	int realbits = chan->scan_type.realbits;
 	int ret = 0;
 	long long period;
···
 
 		for (i = 0; i < ARRAY_SIZE(ads1015_comp_queue) - 1; i++) {
 			if (period <= ads1015_comp_queue[i] *
-					USEC_PER_SEC / data->data_rate[dr])
+					USEC_PER_SEC / data_rate[dr])
 				break;
 		}
 		data->thresh_data[chan->address].comp_queue = i;
···
 	.validate_scan_mask = &iio_validate_scan_mask_onehot,
 };
 
-static IIO_CONST_ATTR_NAMED(ads1015_scale_available, scale_available,
-	"3 2 1 0.5 0.25 0.125");
-static IIO_CONST_ATTR_NAMED(ads1115_scale_available, scale_available,
-	"0.1875 0.125 0.0625 0.03125 0.015625 0.007813");
-
-static IIO_CONST_ATTR_NAMED(ads1015_sampling_frequency_available,
-	sampling_frequency_available, "128 250 490 920 1600 2400 3300");
-static IIO_CONST_ATTR_NAMED(ads1115_sampling_frequency_available,
-	sampling_frequency_available, "8 16 32 64 128 250 475 860");
-
-static struct attribute *ads1015_attributes[] = {
-	&iio_const_attr_ads1015_scale_available.dev_attr.attr,
-	&iio_const_attr_ads1015_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group ads1015_attribute_group = {
-	.attrs = ads1015_attributes,
-};
-
-static struct attribute *ads1115_attributes[] = {
-	&iio_const_attr_ads1115_scale_available.dev_attr.attr,
-	&iio_const_attr_ads1115_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group ads1115_attribute_group = {
-	.attrs = ads1115_attributes,
-};
-
 static const struct iio_info ads1015_info = {
+	.read_avail	= ads1015_read_avail,
 	.read_raw	= ads1015_read_raw,
 	.write_raw	= ads1015_write_raw,
 	.read_event_value = ads1015_read_event,
 	.write_event_value = ads1015_write_event,
 	.read_event_config = ads1015_read_event_config,
 	.write_event_config = ads1015_write_event_config,
-	.attrs          = &ads1015_attribute_group,
 };
 
-static const struct iio_info ads1115_info = {
+static const struct iio_info tla2024_info = {
+	.read_avail	= ads1015_read_avail,
 	.read_raw	= ads1015_read_raw,
 	.write_raw	= ads1015_write_raw,
-	.read_event_value = ads1015_read_event,
-	.write_event_value = ads1015_write_event,
-	.read_event_config = ads1015_read_event_config,
-	.write_event_config = ads1015_write_event_config,
-	.attrs          = &ads1115_attribute_group,
 };
 
 static int ads1015_client_get_channels_config(struct i2c_client *client)
···
 static int ads1015_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
+	const struct ads1015_chip_data *chip;
 	struct iio_dev *indio_dev;
 	struct ads1015_data *data;
 	int ret;
-	enum chip_ids chip;
 	int i;
+
+	chip = device_get_match_data(&client->dev);
+	if (!chip)
+		chip = (const struct ads1015_chip_data *)id->driver_data;
+	if (!chip)
+		return dev_err_probe(&client->dev, -EINVAL, "Unknown chip\n");
 
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (!indio_dev)
···
 	indio_dev->name = ADS1015_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	chip = (uintptr_t)device_get_match_data(&client->dev);
-	if (chip == ADSXXXX)
-		chip = id->driver_data;
-	switch (chip) {
-	case ADS1015:
-		indio_dev->channels = ads1015_channels;
-		indio_dev->num_channels = ARRAY_SIZE(ads1015_channels);
-		indio_dev->info = &ads1015_info;
-		data->data_rate = (unsigned int *) &ads1015_data_rate;
-		break;
-	case ADS1115:
-		indio_dev->channels = ads1115_channels;
-		indio_dev->num_channels = ARRAY_SIZE(ads1115_channels);
-		indio_dev->info = &ads1115_info;
-		data->data_rate = (unsigned int *) &ads1115_data_rate;
-		break;
-	default:
-		dev_err(&client->dev, "Unknown chip %d\n", chip);
-		return -EINVAL;
-	}
-
+	indio_dev->channels = chip->channels;
+	indio_dev->num_channels = chip->num_channels;
+	indio_dev->info = chip->info;
+	data->chip = chip;
 	data->event_channel = ADS1015_CHANNELS;
+
 	/*
 	 * Set default lower and upper threshold to min and max value
 	 * respectively.
···
 	/* we need to keep this ABI the same as used by hwmon ADS1015 driver */
 	ads1015_get_channels_config(client);
 
-	data->regmap = devm_regmap_init_i2c(client, &ads1015_regmap_config);
+	data->regmap = devm_regmap_init_i2c(client, chip->has_comparator ?
+					    &ads1015_regmap_config :
+					    &tla2024_regmap_config);
 	if (IS_ERR(data->regmap)) {
 		dev_err(&client->dev, "Failed to allocate register map\n");
 		return PTR_ERR(data->regmap);
···
 		return ret;
 	}
 
-	if (client->irq) {
+	if (client->irq && chip->has_comparator) {
 		unsigned long irq_trig =
 			irqd_get_trigger_type(irq_get_irq_data(client->irq));
 		unsigned int cfg_comp_mask = ADS1015_CFG_COMP_QUE_MASK |
···
 			   ads1015_runtime_resume, NULL)
 };
 
+static const struct ads1015_chip_data ads1015_data = {
+	.channels	= ads1015_channels,
+	.num_channels	= ARRAY_SIZE(ads1015_channels),
+	.info		= &ads1015_info,
+	.data_rate	= ads1015_data_rate,
+	.data_rate_len	= ARRAY_SIZE(ads1015_data_rate),
+	.scale		= ads1015_scale,
+	.scale_len	= ARRAY_SIZE(ads1015_scale),
+	.has_comparator	= true,
+};
+
+static const struct ads1015_chip_data ads1115_data = {
+	.channels	= ads1115_channels,
+	.num_channels	= ARRAY_SIZE(ads1115_channels),
+	.info		= &ads1015_info,
+	.data_rate	= ads1115_data_rate,
+	.data_rate_len	= ARRAY_SIZE(ads1115_data_rate),
+	.scale		= ads1115_scale,
+	.scale_len	= ARRAY_SIZE(ads1115_scale),
+	.has_comparator	= true,
+};
+
+static const struct ads1015_chip_data tla2024_data = {
+	.channels	= tla2024_channels,
+	.num_channels	= ARRAY_SIZE(tla2024_channels),
+	.info		= &tla2024_info,
+	.data_rate	= ads1015_data_rate,
+	.data_rate_len	= ARRAY_SIZE(ads1015_data_rate),
+	.scale		= ads1015_scale,
+	.scale_len	= ARRAY_SIZE(ads1015_scale),
+	.has_comparator	= false,
+};
+
 static const struct i2c_device_id ads1015_id[] = {
-	{"ads1015", ADS1015},
-	{"ads1115", ADS1115},
+	{ "ads1015", (kernel_ulong_t)&ads1015_data },
+	{ "ads1115", (kernel_ulong_t)&ads1115_data },
+	{ "tla2024", (kernel_ulong_t)&tla2024_data },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ads1015_id);
 
 static const struct of_device_id ads1015_of_match[] = {
-	{
-		.compatible = "ti,ads1015",
-		.data = (void *)ADS1015
-	},
-	{
-		.compatible = "ti,ads1115",
-		.data = (void *)ADS1115
-	},
+	{ .compatible = "ti,ads1015", .data = &ads1015_data },
+	{ .compatible = "ti,ads1115", .data = &ads1115_data },
+	{ .compatible = "ti,tla2024", .data = &tla2024_data },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ads1015_of_match);

drivers/iio/adc/ti-ads8688.c

···
 static struct spi_driver ads8688_driver = {
 	.driver = {
 		.name	= "ads8688",
+		.of_match_table = ads8688_of_match,
 	},
 	.probe		= ads8688_probe,
 	.remove		= ads8688_remove,

drivers/iio/adc/ti_am335x_adc.c

···
 {
 	int ret;
 
-	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
-					  setup_ops);
+	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, setup_ops);
 	if (ret)
 		return ret;
 

drivers/iio/afe/Kconfig

···
 
 config IIO_RESCALE
 	tristate "IIO rescale"
-	depends on OF || COMPILE_TEST
 	help
 	  Say yes here to build support for the IIO rescaling
 	  that handles voltage dividers, current sense shunts and

drivers/iio/afe/iio-rescale.c

···
 
 #include <linux/err.h>
 #include <linux/gcd.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 
···
 
 	rescale = iio_priv(indio_dev);
 
-	rescale->cfg = of_device_get_match_data(dev);
+	rescale->cfg = device_get_match_data(dev);
 	rescale->numerator = 1;
 	rescale->denominator = 1;
 	rescale->offset = 0;

drivers/iio/buffer/kfifo_buf.c

···
  * devm_iio_kfifo_buffer_setup_ext - Allocate a kfifo buffer & attach it to an IIO device
  * @dev: Device object to which to attach the life-time of this kfifo buffer
  * @indio_dev: The device the buffer should be attached to
- * @mode_flags: The mode flags for this buffer (INDIO_BUFFER_SOFTWARE and/or
- *		INDIO_BUFFER_TRIGGERED).
  * @setup_ops: The setup_ops required to configure the HW part of the buffer (optional)
  * @buffer_attrs: Extra sysfs buffer attributes for this IIO buffer
  *
···
  */
 int devm_iio_kfifo_buffer_setup_ext(struct device *dev,
 				    struct iio_dev *indio_dev,
-				    int mode_flags,
 				    const struct iio_buffer_setup_ops *setup_ops,
 				    const struct attribute **buffer_attrs)
 {
 	struct iio_buffer *buffer;
 
-	if (!mode_flags)
-		return -EINVAL;
-
 	buffer = devm_iio_kfifo_allocate(dev);
 	if (!buffer)
 		return -ENOMEM;
 
-	mode_flags &= kfifo_access_funcs.modes;
-
-	indio_dev->modes |= mode_flags;
+	indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
 	indio_dev->setup_ops = setup_ops;
 
 	buffer->attrs = buffer_attrs;

drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c

···
 			 * We can not use trigger here, as events are generated
 			 * as soon as sample_frequency is set.
 			 */
-			ret = devm_iio_kfifo_buffer_setup_ext(dev, indio_dev,
-							      INDIO_BUFFER_SOFTWARE, NULL,
+			ret = devm_iio_kfifo_buffer_setup_ext(dev, indio_dev, NULL,
 							      cros_ec_sensor_fifo_attributes);
 			if (ret)
 				return ret;
···
 	int ret, i;
 	bool calibrate;
 
-	ret = strtobool(buf, &calibrate);
+	ret = kstrtobool(buf, &calibrate);
 	if (ret < 0)
 		return ret;
 	if (!calibrate)

drivers/iio/common/scmi_sensors/scmi_iio.c

···
 
 		err = devm_iio_kfifo_buffer_setup(&scmi_iio_dev->dev,
 						  scmi_iio_dev,
-						  INDIO_BUFFER_SOFTWARE,
 						  &scmi_iio_buffer_ops);
 		if (err < 0) {
 			dev_err(dev,

drivers/iio/common/ssp_sensors/ssp_spi.c

···
 /* threaded irq */
 int ssp_irq_msg(struct ssp_data *data)
 {
-	bool found = false;
 	char *buffer;
 	u8 msg_type;
 	int ret;
 	u16 length, msg_options;
-	struct ssp_msg *msg, *n;
+	struct ssp_msg *msg = NULL, *iter, *n;
 
 	ret = spi_read(data->spi, data->header_buffer, SSP_HEADER_BUFFER_SIZE);
 	if (ret < 0) {
···
 		 * received with no order
 		 */
 		mutex_lock(&data->pending_lock);
-		list_for_each_entry_safe(msg, n, &data->pending_list, list) {
-			if (msg->options == msg_options) {
-				list_del(&msg->list);
-				found = true;
+		list_for_each_entry_safe(iter, n, &data->pending_list, list) {
+			if (iter->options == msg_options) {
+				list_del(&iter->list);
+				msg = iter;
 				break;
 			}
 		}
 
-		if (!found) {
+		if (!msg) {
 			/*
 			 * here can be implemented dead messages handling
 			 * but the slave should not send such ones - it is to

drivers/iio/common/st_sensors/st_sensors_core.c

···
 
 int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)
 {
-	int err;
+	int err = 0;
 	struct st_sensor_odr_avl odr_out = {0, 0};
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
+	mutex_lock(&sdata->odr_lock);
+
 	if (!sdata->sensor_settings->odr.mask)
-		return 0;
+		goto unlock_mutex;
 
 	err = st_sensors_match_odr(sdata->sensor_settings, odr, &odr_out);
 	if (err < 0)
-		goto st_sensors_match_odr_error;
+		goto unlock_mutex;
 
 	if ((sdata->sensor_settings->odr.addr ==
 					sdata->sensor_settings->pw.addr) &&
···
 	if (err >= 0)
 		sdata->odr = odr_out.hz;
 
-st_sensors_match_odr_error:
+unlock_mutex:
+	mutex_unlock(&sdata->odr_lock);
+
 	return err;
 }
 EXPORT_SYMBOL_NS(st_sensors_set_odr, IIO_ST_SENSORS);
···
 	struct st_sensors_platform_data *of_pdata;
 	int err = 0;
 
+	mutex_init(&sdata->odr_lock);
+
 	/* If OF/DT pdata exists, it will take precedence of anything else */
 	of_pdata = st_sensors_dev_probe(indio_dev->dev.parent, pdata);
 	if (IS_ERR(of_pdata))
···
 	int err;
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
-		err = -EBUSY;
+	err = iio_device_claim_direct_mode(indio_dev);
+	if (err)
+		return err;
+
+	mutex_lock(&sdata->odr_lock);
+
+	err = st_sensors_set_enable(indio_dev, true);
+	if (err < 0)
 		goto out;
-	} else {
-		err = st_sensors_set_enable(indio_dev, true);
-		if (err < 0)
-			goto out;
 
-		msleep((sdata->sensor_settings->bootime * 1000) / sdata->odr);
-		err = st_sensors_read_axis_data(indio_dev, ch, val);
-		if (err < 0)
-			goto out;
+	msleep((sdata->sensor_settings->bootime * 1000) / sdata->odr);
+	err = st_sensors_read_axis_data(indio_dev, ch, val);
+	if (err < 0)
+		goto out;
 
-		*val = *val >> ch->scan_type.shift;
+	*val = *val >> ch->scan_type.shift;
 
-		err = st_sensors_set_enable(indio_dev, false);
-	}
+	err = st_sensors_set_enable(indio_dev, false);
+
 out:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&sdata->odr_lock);
+	iio_device_release_direct_mode(indio_dev);
 
 	return err;
 }
···
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
 	for (i = 0; i < ST_SENSORS_ODR_LIST_MAX; i++) {
 		if (sdata->sensor_settings->odr.odr_avl[i].hz == 0)
 			break;
···
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
 				sdata->sensor_settings->odr.odr_avl[i].hz);
 	}
-	mutex_unlock(&indio_dev->mlock);
 	buf[len - 1] = '\n';
 
 	return len;
···
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
 	for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) {
 		if (sdata->sensor_settings->fs.fs_avl[i].num == 0)
 			break;
···
 
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%u.%06u ", q, r);
 	}
-	mutex_unlock(&indio_dev->mlock);
 	buf[len - 1] = '\n';
 
 	return len;

drivers/iio/dac/Kconfig

···
 
 config DPOT_DAC
 	tristate "DAC emulation using a DPOT"
-	depends on OF
 	help
 	  Say yes here to build support for DAC emulation using a digital
 	  potentiometer.
···
 config LPC18XX_DAC
 	tristate "NXP LPC18xx DAC driver"
 	depends on ARCH_LPC18XX || COMPILE_TEST
-	depends on OF && HAS_IOMEM
+	depends on HAS_IOMEM
 	help
 	  Say yes here to build support for NXP LPC18XX DAC.
 
···
 
 config VF610_DAC
 	tristate "Vybrid vf610 DAC driver"
-	depends on OF
 	depends on HAS_IOMEM
 	help
 	  Say yes here to support Vybrid board digital-to-analog converter.

drivers/iio/dac/ad5064.c

···
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5360.c

···
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5380.c

···
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5446.c

···
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5504.c

···
 	int ret;
 	struct ad5504_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5624r_spi.c

···
 	int ret;
 	struct ad5624r_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5686.c

···
 	unsigned int val, ref_bit_msk;
 	u8 shift, address = 0;
 
-	ret = strtobool(buf, &readin);
+	ret = kstrtobool(buf, &readin);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5755.c

···
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad5791.c

···
 	int ret;
 	struct ad5791_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ad7303.c

···
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ltc2632.c

···
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 #include <asm/unaligned.h>
···
 	int ret;
 	struct ltc2632_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
···
 		}
 	}
 
-	indio_dev->name = dev_of_node(&spi->dev) ? dev_of_node(&spi->dev)->name
-						 : spi_get_device_id(spi)->name;
+	indio_dev->name = fwnode_get_name(dev_fwnode(&spi->dev)) ?: spi_get_device_id(spi)->name;
 	indio_dev->info = &ltc2632_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = chip_info->channels;
···
 static struct spi_driver ltc2632_driver = {
 	.driver		= {
 		.name	= "ltc2632",
-		.of_match_table = of_match_ptr(ltc2632_of_match),
+		.of_match_table = ltc2632_of_match,
 	},
 	.probe		= ltc2632_probe,
 	.remove		= ltc2632_remove,

drivers/iio/dac/ltc2688.c

···
 				 struct ltc2688_chan *chan,
 				 struct fwnode_handle *node, int tgp)
 {
+	struct device *dev = &st->spi->dev;
 	unsigned long rate;
 	struct clk *clk;
 	int ret, f;
 
-	clk = devm_get_clk_from_child(&st->spi->dev, to_of_node(node), NULL);
+	clk = devm_get_clk_from_child(dev, to_of_node(node), NULL);
 	if (IS_ERR(clk))
-		return dev_err_probe(&st->spi->dev, PTR_ERR(clk),
-				     "failed to get tgp clk.\n");
+		return dev_err_probe(dev, PTR_ERR(clk), "failed to get tgp clk.\n");
 
 	ret = clk_prepare_enable(clk);
 	if (ret)
-		return dev_err_probe(&st->spi->dev, ret,
-				     "failed to enable tgp clk.\n");
+		return dev_err_probe(dev, ret, "failed to enable tgp clk.\n");
 
-	ret = devm_add_action_or_reset(&st->spi->dev, ltc2688_clk_disable, clk);
+	ret = devm_add_action_or_reset(dev, ltc2688_clk_disable, clk);
 	if (ret)
 		return ret;
 
···
 
 static int ltc2688_setup(struct ltc2688_state *st, struct regulator *vref)
 {
+	struct device *dev = &st->spi->dev;
 	struct gpio_desc *gpio;
 	int ret;
 
···
 	 * If we have a reset pin, use that to reset the board, If not, use
 	 * the reset bit.
 	 */
-	gpio = devm_gpiod_get_optional(&st->spi->dev, "clr", GPIOD_OUT_HIGH);
+	gpio = devm_gpiod_get_optional(dev, "clr", GPIOD_OUT_HIGH);
 	if (IS_ERR(gpio))
-		return dev_err_probe(&st->spi->dev, PTR_ERR(gpio),
-				     "Failed to get reset gpio");
+		return dev_err_probe(dev, PTR_ERR(gpio), "Failed to get reset gpio");
 	if (gpio) {
 		usleep_range(1000, 1200);
 		/* bring device out of reset */
···
 	 * Duplicate the default channel configuration as it can change during
 	 * @ltc2688_channel_config()
 	 */
-	st->iio_chan = devm_kmemdup(&st->spi->dev, ltc2688_channels,
+	st->iio_chan = devm_kmemdup(dev, ltc2688_channels,
 				    sizeof(ltc2688_channels), GFP_KERNEL);
 	if (!st->iio_chan)
 		return -ENOMEM;

drivers/iio/dac/max5821.c

···
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 

drivers/iio/dac/mcp4725.c

···
 	bool state;
 	int ret;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 
···
 	bool state;
 	int ret;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret)
 		return ret;
 

drivers/iio/dac/stm32-dac.c

···
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ti-dac082s085.c

···
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ti-dac5571.c

···
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 

drivers/iio/dac/ti-dac7311.c

···
 	u8 power;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 

drivers/iio/dummy/iio_simple_dummy.c

···
 	 */
 
 	swd = kzalloc(sizeof(*swd), GFP_KERNEL);
-	if (!swd) {
-		ret = -ENOMEM;
-		goto error_kzalloc;
-	}
+	if (!swd)
+		return ERR_PTR(-ENOMEM);
+
 	/*
 	 * Allocate an IIO device.
 	 *
···
 	indio_dev = iio_device_alloc(parent, sizeof(*st));
 	if (!indio_dev) {
 		ret = -ENOMEM;
-		goto error_ret;
+		goto error_free_swd;
 	}
 
 	st = iio_priv(indio_dev);
···
 	 *    indio_dev->name = spi_get_device_id(spi)->name;
 	 */
 	indio_dev->name = kstrdup(name, GFP_KERNEL);
+	if (!indio_dev->name) {
+		ret = -ENOMEM;
+		goto error_free_device;
+	}
 
 	/* Provide description of available channels */
 	indio_dev->channels = iio_dummy_channels;
···
 
 	ret = iio_simple_dummy_events_register(indio_dev);
 	if (ret < 0)
-		goto error_free_device;
+		goto error_free_name;
 
 	ret = iio_simple_dummy_configure_buffer(indio_dev);
 	if (ret < 0)
···
 	iio_simple_dummy_unconfigure_buffer(indio_dev);
 error_unregister_events:
 	iio_simple_dummy_events_unregister(indio_dev);
+error_free_name:
+	kfree(indio_dev->name);
 error_free_device:
 	iio_device_free(indio_dev);
-error_ret:
+error_free_swd:
 	kfree(swd);
-error_kzalloc:
 	return ERR_PTR(ret);
 }
 

drivers/iio/frequency/ad9523.c

···
 	bool state;
 	int ret;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 

drivers/iio/gyro/fxas21002c_core.c

···
 
 #include <linux/interrupt.h>
 #include <linux/module.h>
-#include <linux/of_irq.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 
···
 {
 	struct device *dev = regmap_get_device(data->regmap);
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct device_node *np = indio_dev->dev.of_node;
 	unsigned long irq_trig;
 	bool irq_open_drain;
 	int irq1;
···
 	if (!data->irq)
 		return 0;
 
-	irq1 = of_irq_get_byname(np, "INT1");
-
+	irq1 = fwnode_irq_get_byname(dev_fwnode(dev), "INT1");
 	if (irq1 == data->irq) {
 		dev_info(dev, "using interrupt line INT1\n");
 		ret = regmap_field_write(data->regmap_fields[F_INT_CFG_DRDY],
···
 
 	dev_info(dev, "using interrupt line INT2\n");
 
-	irq_open_drain = of_property_read_bool(np, "drive-open-drain");
+	irq_open_drain = device_property_read_bool(dev, "drive-open-drain");
 
 	data->dready_trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
 						   indio_dev->name,

drivers/iio/gyro/mpu3050-core.c

···
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/random.h>
 #include <linux/slab.h>
 
···
 static int mpu3050_trigger_probe(struct iio_dev *indio_dev, int irq)
 {
 	struct mpu3050 *mpu3050 = iio_priv(indio_dev);
+	struct device *dev = mpu3050->dev;
 	unsigned long irq_trig;
 	int ret;
 
···
 		return -ENOMEM;
 
 	/* Check if IRQ is open drain */
-	if (of_property_read_bool(mpu3050->dev->of_node, "drive-open-drain"))
-		mpu3050->irq_opendrain = true;
+	mpu3050->irq_opendrain = device_property_read_bool(dev, "drive-open-drain");
 
 	irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq));
 	/*
···
 				   mpu3050->trig->name,
 				   mpu3050->trig);
 	if (ret) {
-		dev_err(mpu3050->dev,
-			"can't get IRQ %d, error %d\n", irq, ret);
+		dev_err(dev, "can't get IRQ %d, error %d\n", irq, ret);
 		return ret;
 	}
 
 	mpu3050->irq = irq;
-	mpu3050->trig->dev.parent = mpu3050->dev;
+	mpu3050->trig->dev.parent = dev;
 	mpu3050->trig->ops = &mpu3050_trigger_ops;
 	iio_trigger_set_drvdata(mpu3050->trig, indio_dev);
 
···
 }
 EXPORT_SYMBOL(mpu3050_common_probe);
 
-int mpu3050_common_remove(struct device *dev)
+void mpu3050_common_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct mpu3050 *mpu3050 = iio_priv(indio_dev);
···
 		free_irq(mpu3050->irq, mpu3050);
 	iio_device_unregister(indio_dev);
 	mpu3050_power_down(mpu3050);
-
-	return 0;
 }
 EXPORT_SYMBOL(mpu3050_common_remove);
 

drivers/iio/gyro/mpu3050-i2c.c

···
 	if (mpu3050->i2cmux)
 		i2c_mux_del_adapters(mpu3050->i2cmux);
 
-	return mpu3050_common_remove(&client->dev);
+	mpu3050_common_remove(&client->dev);
+
+	return 0;
 }
 
 /*

drivers/iio/gyro/mpu3050.h

···
 			 struct regmap *map,
 			 int irq,
 			 const char *name);
-int mpu3050_common_remove(struct device *dev);
+void mpu3050_common_remove(struct device *dev);
 
 /* PM ops */
 extern const struct dev_pm_ops mpu3050_dev_pm_ops;

drivers/iio/gyro/ssp_gyro_sensor.c

···
 	indio_dev->available_scan_masks = ssp_gyro_scan_mask;
 
 	ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &ssp_gyro_buffer_ops);
 	if (ret)
 		return ret;

drivers/iio/gyro/st_gyro_core.c

···
 static int st_gyro_write_raw(struct iio_dev *indio_dev,
 		struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
-		err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
-		break;
+		return st_sensors_set_fullscale_by_gain(indio_dev, val2);
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
-	default:
-		err = -EINVAL;
-	}
 
-	return err;
+		return st_sensors_set_odr(indio_dev, val);
+	default:
+		return -EINVAL;
+	}
 }
 
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();

drivers/iio/health/max30100.c

···
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &max30100_buffer_setup_ops);
 	if (ret)
 		return ret;

drivers/iio/health/max30102.c

···
 	}
 
 	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &max30102_buffer_setup_ops);
 	if (ret)
 		return ret;

drivers/iio/imu/adis16480.c

···
 
 #include <linux/clk.h>
 #include <linux/bitfield.h>
-#include <linux/of_irq.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/math.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/lcm.h>
+#include <linux/property.h>
 #include <linux/swab.h>
 #include <linux/crc32.h>
 
···
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16480 *st = iio_priv(indio_dev);
 	struct adis *adis = &st->adis;
+	struct device *dev = &adis->spi->dev;
 	int ret, bit, offset, i = 0;
 	__be16 *buffer;
 	u32 crc;
···
 		adis->tx[1] = 0;
 		ret = spi_write(adis->spi, adis->tx, 2);
 		if (ret) {
-			dev_err(&adis->spi->dev, "Failed to change device page: %d\n", ret);
+			dev_err(dev, "Failed to change device page: %d\n", ret);
 			adis_dev_unlock(adis);
 			goto irq_done;
 		}
···
 
 	ret = spi_sync(adis->spi, &adis->msg);
 	if (ret) {
-		dev_err(&adis->spi->dev, "Failed to read data: %d\n", ret);
+		dev_err(dev, "Failed to read data: %d\n", ret);
 		adis_dev_unlock(adis);
 		goto irq_done;
 	}
···
 	}
 
 	if (offset == 4) {
-		dev_err(&adis->spi->dev, "Invalid burst data\n");
+		dev_err(dev, "Invalid burst data\n");
 		goto irq_done;
 	}
 
 	crc = be16_to_cpu(buffer[offset + 16]) << 16 | be16_to_cpu(buffer[offset + 15]);
 	valid = adis16480_validate_crc((u16 *)&buffer[offset], 15, crc);
 	if (!valid) {
-		dev_err(&adis->spi->dev, "Invalid crc\n");
+		dev_err(dev, "Invalid crc\n");
 		goto irq_done;
 	}
 
···
 static int adis16480_stop_device(struct iio_dev *indio_dev)
 {
 	struct adis16480 *st = iio_priv(indio_dev);
+	struct device *dev = &st->adis.spi->dev;
 	int ret;
 
 	ret = adis_write_reg_16(&st->adis, ADIS16480_REG_SLP_CNT, BIT(9));
 	if (ret)
-		dev_err(&indio_dev->dev,
-			"Could not power down device: %d\n", ret);
+		dev_err(dev, "Could not power down device: %d\n", ret);
 
 	return ret;
 }
···
 	return __adis_write_reg_16(adis, ADIS16480_REG_FNCTIO_CTRL, val);
 }
 
-static int adis16480_config_irq_pin(struct device_node *of_node,
-				    struct adis16480 *st)
+static int adis16480_config_irq_pin(struct adis16480 *st)
 {
+	struct device *dev = &st->adis.spi->dev;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct irq_data *desc;
 	enum adis16480_int_pin pin;
 	unsigned int irq_type;
···
 
 	desc = irq_get_irq_data(st->adis.spi->irq);
 	if (!desc) {
-		dev_err(&st->adis.spi->dev, "Could not find IRQ %d\n", irq);
+		dev_err(dev, "Could not find IRQ %d\n", irq);
 		return -EINVAL;
 	}
 
···
 	 */
 	pin = ADIS16480_PIN_DIO1;
 	for (i = 0; i < ARRAY_SIZE(adis16480_int_pin_names); i++) {
-		irq = of_irq_get_byname(of_node, adis16480_int_pin_names[i]);
+		irq = fwnode_irq_get_byname(fwnode, adis16480_int_pin_names[i]);
 		if (irq > 0) {
 			pin = i;
 			break;
···
 	} else if (irq_type == IRQ_TYPE_EDGE_FALLING) {
 		val |= ADIS16480_DRDY_POL(0);
 	} else {
-		dev_err(&st->adis.spi->dev,
-			"Invalid interrupt type 0x%x specified\n", irq_type);
+		dev_err(dev, "Invalid interrupt type 0x%x specified\n", irq_type);
 		return -EINVAL;
 	}
 	/* Write the data ready configuration to the FNCTIO_CTRL register */
 	return adis_write_reg_16(&st->adis, ADIS16480_REG_FNCTIO_CTRL, val);
 }
 
-static int adis16480_of_get_ext_clk_pin(struct adis16480 *st,
-					struct device_node *of_node)
+static int adis16480_fw_get_ext_clk_pin(struct adis16480 *st)
 {
+	struct device *dev = &st->adis.spi->dev;
 	const char *ext_clk_pin;
 	enum adis16480_int_pin pin;
 	int i;
 
 	pin = ADIS16480_PIN_DIO2;
-	if (of_property_read_string(of_node, "adi,ext-clk-pin", &ext_clk_pin))
+	if (device_property_read_string(dev, "adi,ext-clk-pin", &ext_clk_pin))
 		goto clk_input_not_found;
 
 	for (i = 0; i < ARRAY_SIZE(adis16480_int_pin_names); i++) {
···
 	}
 
 clk_input_not_found:
-	dev_info(&st->adis.spi->dev,
-		"clk input line not specified, using DIO2\n");
+	dev_info(dev, "clk input line not specified, using DIO2\n");
 	return pin;
 }
 
-static int adis16480_ext_clk_config(struct adis16480 *st,
-				    struct device_node *of_node,
-				    bool enable)
+static int adis16480_ext_clk_config(struct adis16480 *st, bool enable)
 {
+	struct device *dev = &st->adis.spi->dev;
 	unsigned int mode, mask;
 	enum adis16480_int_pin pin;
 	uint16_t val;
···
 	if (ret)
 		return ret;
 
-	pin = adis16480_of_get_ext_clk_pin(st, of_node);
+	pin = adis16480_fw_get_ext_clk_pin(st);
 	/*
 	 * Each DIOx pin supports only one function at a time. When a single pin
 	 * has two assignments, the enable bit for a lower priority function
 	 * automatically resets to zero (disabling the lower priority function).
 	 */
 	if (pin == ADIS16480_DRDY_SEL(val))
-		dev_warn(&st->adis.spi->dev,
-			"DIO%x pin supports only one function at a time\n",
-			pin + 1);
+		dev_warn(dev, "DIO%x pin supports only one function at a time\n", pin + 1);
 
 	mode = ADIS16480_SYNC_EN(enable) | ADIS16480_SYNC_SEL(pin);
 	mask = ADIS16480_SYNC_EN_MSK | ADIS16480_SYNC_SEL_MSK;
···
 
 static int adis16480_get_ext_clocks(struct adis16480 *st)
 {
-	st->clk_mode = ADIS16480_CLK_INT;
-	st->ext_clk = devm_clk_get(&st->adis.spi->dev, "sync");
-	if (!IS_ERR_OR_NULL(st->ext_clk)) {
+	struct device *dev = &st->adis.spi->dev;
+
+	st->ext_clk = devm_clk_get_optional(dev, "sync");
+	if (IS_ERR(st->ext_clk))
+		return dev_err_probe(dev, PTR_ERR(st->ext_clk), "failed to get ext clk\n");
+	if (st->ext_clk) {
 		st->clk_mode = ADIS16480_CLK_SYNC;
 		return 0;
 	}
 
-	if (PTR_ERR(st->ext_clk) != -ENOENT) {
-		dev_err(&st->adis.spi->dev, "failed to get ext clk\n");
-		return PTR_ERR(st->ext_clk);
-	}
-
 	if (st->chip_info->has_pps_clk_mode) {
-		st->ext_clk = devm_clk_get(&st->adis.spi->dev, "pps");
-		if (!IS_ERR_OR_NULL(st->ext_clk)) {
+		st->ext_clk = devm_clk_get_optional(dev, "pps");
+		if (IS_ERR(st->ext_clk))
+			return dev_err_probe(dev, PTR_ERR(st->ext_clk), "failed to get ext clk\n");
+		if (st->ext_clk) {
 			st->clk_mode = ADIS16480_CLK_PPS;
 			return 0;
 		}
-
-		if (PTR_ERR(st->ext_clk) != -ENOENT) {
-			dev_err(&st->adis.spi->dev, "failed to get ext clk\n");
-			return PTR_ERR(st->ext_clk);
-		}
 	}
 
+	st->clk_mode = ADIS16480_CLK_INT;
 	return 0;
 }
 
···
 	const struct spi_device_id *id = spi_get_device_id(spi);
 	const struct adis_data *adis16480_data;
 	irq_handler_t trigger_handler = NULL;
+	struct device *dev = &spi->dev;
 	struct iio_dev *indio_dev;
 	struct adis16480 *st;
 	int ret;
 
-	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
 	if (indio_dev == NULL)
 		return -ENOMEM;
 
···
 		return ret;
 
 	if (st->chip_info->has_sleep_cnt) {
-		ret = devm_add_action_or_reset(&spi->dev, adis16480_stop,
-					       indio_dev);
+		ret = devm_add_action_or_reset(dev, adis16480_stop, indio_dev);
 		if (ret)
 			return ret;
 	}
 
-	ret = adis16480_config_irq_pin(spi->dev.of_node, st);
+	ret = adis16480_config_irq_pin(st);
 	if (ret)
 		return ret;
 
···
 	if (ret)
 		return ret;
 
-	if (!IS_ERR_OR_NULL(st->ext_clk)) {
-		ret = adis16480_ext_clk_config(st, spi->dev.of_node, true);
+	if (st->ext_clk) {
+		ret = adis16480_ext_clk_config(st, true);
 		if (ret)
 			return ret;
 
-		ret = devm_add_action_or_reset(&spi->dev, adis16480_clk_disable, st->ext_clk);
+		ret = devm_add_action_or_reset(dev, adis16480_clk_disable, st->ext_clk);
 		if (ret)
 			return ret;
 
···
 	if (ret)
 		return ret;
 
-	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret)
 		return ret;
 

drivers/iio/imu/bmi160/bmi160_core.c

···
  */
 #include <linux/module.h>
 #include <linux/regmap.h>
-#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
-#include <linux/of_irq.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
···
 	.attrs = &bmi160_attrs_group,
 };
 
-static const char *bmi160_match_acpi_device(struct device *dev)
-{
-	const struct acpi_device_id *id;
-
-	id = acpi_match_device(dev->driver->acpi_match_table, dev);
-	if (!id)
-		return NULL;
-
-	return dev_name(dev);
-}
-
 static int bmi160_write_conf_reg(struct regmap *regmap, unsigned int reg,
 				 unsigned int mask, unsigned int bits,
 				 unsigned int write_usleep)
···
 }
 EXPORT_SYMBOL(bmi160_enable_irq);
 
-static int bmi160_get_irq(struct device_node *of_node, enum bmi160_int_pin *pin)
+static int bmi160_get_irq(struct fwnode_handle *fwnode, enum bmi160_int_pin *pin)
 {
 	int irq;
 
 	/* Use INT1 if possible, otherwise fall back to INT2. */
-	irq = of_irq_get_byname(of_node, "INT1");
+	irq = fwnode_irq_get_byname(fwnode, "INT1");
 	if (irq > 0) {
 		*pin = BMI160_PIN_INT1;
 		return irq;
 	}
 
-	irq = of_irq_get_byname(of_node, "INT2");
+	irq = fwnode_irq_get_byname(fwnode, "INT2");
 	if (irq > 0)
 		*pin = BMI160_PIN_INT2;
 
···
 		return -EINVAL;
 	}
 
-	open_drain = of_property_read_bool(dev->of_node, "drive-open-drain");
+	open_drain = device_property_read_bool(dev, "drive-open-drain");
 
 	return bmi160_config_pin(data->regmap, pin, open_drain, irq_mask,
 				 BMI160_NORMAL_WRITE_USLEEP);
···
 	if (ret)
 		return ret;
 
-	if (!name && ACPI_HANDLE(dev))
-		name = bmi160_match_acpi_device(dev);
-
 	indio_dev->channels = bmi160_channels;
 	indio_dev->num_channels = ARRAY_SIZE(bmi160_channels);
 	indio_dev->name = name;
···
 	if (ret)
 		return ret;
 
-	irq = bmi160_get_irq(dev->of_node, &int_pin);
+	irq = bmi160_get_irq(dev_fwnode(dev), &int_pin);
 	if (irq > 0) {
 		ret = bmi160_setup_irq(indio_dev, irq, int_pin);
 		if (ret)

drivers/iio/imu/bmi160/bmi160_i2c.c

···
  *      - 0x68 if SDO is pulled to GND
  *      - 0x69 if SDO is pulled to VDDIO
  */
-#include <linux/acpi.h>
 #include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 
 #include "bmi160.h"
···
 			    const struct i2c_device_id *id)
 {
 	struct regmap *regmap;
-	const char *name = NULL;
+	const char *name;
 
 	regmap = devm_regmap_init_i2c(client, &bmi160_regmap_config);
 	if (IS_ERR(regmap)) {
···
 
 	if (id)
 		name = id->name;
+	else
+		name = dev_name(&client->dev);
 
 	return bmi160_core_probe(&client->dev, regmap, name, false);
 }
···
 };
 MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
 
-#ifdef CONFIG_OF
 static const struct of_device_id bmi160_of_match[] = {
 	{ .compatible = "bosch,bmi160" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmi160_of_match);
-#endif
 
 static struct i2c_driver bmi160_i2c_driver = {
 	.driver = {
 		.name			= "bmi160_i2c",
-		.acpi_match_table	= ACPI_PTR(bmi160_acpi_match),
-		.of_match_table		= of_match_ptr(bmi160_of_match),
+		.acpi_match_table	= bmi160_acpi_match,
+		.of_match_table		= bmi160_of_match,
 	},
 	.probe		= bmi160_i2c_probe,
 	.id_table	= bmi160_i2c_id,

drivers/iio/imu/bmi160/bmi160_spi.c

···
  * Copyright (c) 2016, Intel Corporation.
  *
  */
-#include <linux/acpi.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
 
···
 {
 	struct regmap *regmap;
 	const struct spi_device_id *id = spi_get_device_id(spi);
+	const char *name;
 
 	regmap = devm_regmap_init_spi(spi, &bmi160_regmap_config);
 	if (IS_ERR(regmap)) {
···
 			regmap);
 		return PTR_ERR(regmap);
 	}
-	return bmi160_core_probe(&spi->dev, regmap, id->name, true);
+
+	if (id)
+		name = id->name;
+	else
+		name = dev_name(&spi->dev);
+
+	return bmi160_core_probe(&spi->dev, regmap, name, true);
 }
 
 static const struct spi_device_id bmi160_spi_id[] = {
···
 };
 MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
 
-#ifdef CONFIG_OF
 static const struct of_device_id bmi160_of_match[] = {
 	{ .compatible = "bosch,bmi160" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmi160_of_match);
-#endif
 
 static struct spi_driver bmi160_spi_driver = {
 	.probe		= bmi160_spi_probe,
 	.id_table	= bmi160_spi_id,
 	.driver = {
-		.acpi_match_table	= ACPI_PTR(bmi160_acpi_match),
-		.of_match_table		= of_match_ptr(bmi160_of_match),
+		.acpi_match_table	= bmi160_acpi_match,
+		.of_match_table		= bmi160_of_match,
 		.name			= "bmi160_spi",
 	},
 };

drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c

···
 	indio_dev->available_scan_masks = inv_icm42600_accel_scan_masks;
 
 	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &inv_icm42600_buffer_ops);
 	if (ret)
 		return ERR_PTR(ret);

drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c

···
 	indio_dev->setup_ops = &inv_icm42600_buffer_ops;
 
 	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &inv_icm42600_buffer_ops);
 	if (ret)
 		return ERR_PTR(ret);

drivers/iio/imu/inv_mpu6050/Kconfig

···
 	select REGMAP_I2C
 	help
 	  This driver supports the Invensense MPU6050/9150,
-	  MPU6500/6515/6880/9250/9255, ICM20608/20609/20689, ICM20602/ICM20690
+	  MPU6500/6515/6880/9250/9255, ICM20608(D)/20609/20689, ICM20602/ICM20690
 	  and IAM20680 motion tracking devices over I2C.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-i2c.
···
 	select REGMAP_SPI
 	help
 	  This driver supports the Invensense MPU6000,
-	  MPU6500/6515/6880/9250/9255, ICM20608/20609/20689, ICM20602/ICM20690
+	  MPU6500/6515/6880/9250/9255, ICM20608(D)/20609/20689, ICM20602/ICM20690
 	  and IAM20680 motion tracking devices over SPI.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-spi.

drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

···
 		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 	{
+		.whoami = INV_ICM20608D_WHOAMI_VALUE,
+		.name = "ICM20608D",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 512,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
+	},
+	{
 		.whoami = INV_ICM20609_WHOAMI_VALUE,
 		.name = "ICM20609",
 		.reg = &reg_set_6500,

drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c

···
 
 	switch (st->chip_type) {
 	case INV_ICM20608:
+	case INV_ICM20608D:
 	case INV_ICM20609:
 	case INV_ICM20689:
 	case INV_ICM20602:
···
 	{"mpu9250", INV_MPU9250},
 	{"mpu9255", INV_MPU9255},
 	{"icm20608", INV_ICM20608},
+	{"icm20608d", INV_ICM20608D},
 	{"icm20609", INV_ICM20609},
 	{"icm20689", INV_ICM20689},
 	{"icm20602", INV_ICM20602},
···
 	{
 		.compatible = "invensense,icm20608",
 		.data = (void *)INV_ICM20608
+	},
+	{
+		.compatible = "invensense,icm20608d",
+		.data = (void *)INV_ICM20608D
 	},
 	{
 		.compatible = "invensense,icm20609",

drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h

···
 	INV_MPU9250,
 	INV_MPU9255,
 	INV_ICM20608,
+	INV_ICM20608D,
 	INV_ICM20609,
 	INV_ICM20689,
 	INV_ICM20602,
···
 #define INV_MPU9255_WHOAMI_VALUE		0x73
 #define INV_MPU6515_WHOAMI_VALUE		0x74
 #define INV_ICM20608_WHOAMI_VALUE		0xAF
+#define INV_ICM20608D_WHOAMI_VALUE		0xAE
 #define INV_ICM20609_WHOAMI_VALUE		0xA6
 #define INV_ICM20689_WHOAMI_VALUE		0x98
 #define INV_ICM20602_WHOAMI_VALUE		0x12

drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c

···
 	{"mpu9250", INV_MPU9250},
 	{"mpu9255", INV_MPU9255},
 	{"icm20608", INV_ICM20608},
+	{"icm20608d", INV_ICM20608D},
 	{"icm20609", INV_ICM20609},
 	{"icm20689", INV_ICM20689},
 	{"icm20602", INV_ICM20602},
···
 	{
 		.compatible = "invensense,icm20608",
 		.data = (void *)INV_ICM20608
+	},
+	{
+		.compatible = "invensense,icm20608d",
+		.data = (void *)INV_ICM20608D
 	},
 	{
 		.compatible = "invensense,icm20609",

drivers/iio/imu/st_lsm6dsx/Kconfig

···
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,
-	  ism330dlc, lsm6dso, lsm6dsox, asm330lhh, lsm6dsr, lsm6ds3tr-c,
-	  ism330dhcx, lsm6dsrx, lsm6ds0, lsm6dsop, the accelerometer/gyroscope
-	  of lsm9ds1 and lsm6dst.
+	  ism330dlc, lsm6dso, lsm6dsox, asm330lhh, asm330lhhx, lsm6dsr,
+	  lsm6ds3tr-c, ism330dhcx, lsm6dsrx, lsm6ds0, lsm6dsop,
+	  the accelerometer/gyroscope of lsm9ds1 and lsm6dst.
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called st_lsm6dsx.

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h

···
 #define ST_LSM6DSRX_DEV_NAME	"lsm6dsrx"
 #define ST_LSM6DST_DEV_NAME	"lsm6dst"
 #define ST_LSM6DSOP_DEV_NAME	"lsm6dsop"
+#define ST_ASM330LHHX_DEV_NAME	"asm330lhhx"
 
 enum st_lsm6dsx_hw_id {
 	ST_LSM6DS3_ID,
···
 	ST_LSM6DSRX_ID,
 	ST_LSM6DST_ID,
 	ST_LSM6DSOP_ID,
+	ST_ASM330LHHX_ID,
 	ST_LSM6DSX_MAX_ID,
 };
 

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c

···
  * (e.g. Gx, Gy, Gz, Ax, Ay, Az), then data are repeated depending on the
  * value of the decimation factor and ODR set for each FIFO data set.
  *
- * LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/LSM6DSRX/ISM330DHCX/LSM6DST/LSM6DSOP:
+ * LSM6DSO/LSM6DSOX/ASM330LHH/ASM330LHHX/LSM6DSR/LSM6DSRX/ISM330DHCX/
+ * LSM6DST/LSM6DSOP:
  * The FIFO buffer can be configured to store data from gyroscope and
  * accelerometer. Each sample is queued with a tag (1B) indicating data
  * source (gyroscope, accelerometer, hw timer).
···
 			continue;
 
 		ret = devm_iio_kfifo_buffer_setup(hw->dev, hw->iio_devs[i],
-						  INDIO_BUFFER_SOFTWARE,
 						  &st_lsm6dsx_buffer_ops);
 		if (ret)
 			return ret;

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

···
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
  *   - FIFO size: 4KB
  *
- * - LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/ISM330DHCX/LSM6DST/LSM6DSOP:
+ * - LSM6DSO/LSM6DSOX/ASM330LHH/ASM330LHHX/LSM6DSR/ISM330DHCX/LSM6DST/LSM6DSOP:
  *   - Accelerometer/Gyroscope supported ODR [Hz]: 12.5, 26, 52, 104, 208, 416,
  *     833
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
···
 				.hw_id = ST_LSM6DST_ID,
 				.name = ST_LSM6DST_DEV_NAME,
 				.wai = 0x6d,
+			}, {
+				.hw_id = ST_ASM330LHHX_ID,
+				.name = ST_ASM330LHHX_DEV_NAME,
+				.wai = 0x6b,
 			},
 		},
 		.channels = {

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c

···
 		.compatible = "st,lsm6dsop",
 		.data = (void *)ST_LSM6DSOP_ID,
 	},
+	{
+		.compatible = "st,asm330lhhx",
+		.data = (void *)ST_ASM330LHHX_ID,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
···
 	{ ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID },
 	{ ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID },
 	{ ST_LSM6DSOP_DEV_NAME, ST_LSM6DSOP_ID },
+	{ ST_ASM330LHHX_DEV_NAME, ST_ASM330LHHX_ID },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c

···
 		.compatible = "st,lsm6dsop",
 		.data = (void *)ST_LSM6DSOP_ID,
 	},
+	{
+		.compatible = "st,asm330lhhx",
+		.data = (void *)ST_ASM330LHHX_ID,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
···
 	{ ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID },
 	{ ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID },
 	{ ST_LSM6DSOP_DEV_NAME, ST_LSM6DSOP_ID },
+	{ ST_ASM330LHHX_DEV_NAME, ST_ASM330LHHX_ID },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);

drivers/iio/industrialio-buffer.c

···
 	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
 	struct iio_buffer *buffer = this_attr->buffer;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 	mutex_lock(&indio_dev->mlock);
···
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	bool state;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 
···
 		if (scan_mask == NULL)
 			return -EINVAL;
 	} else {
-	    scan_mask = compound_mask;
+		scan_mask = compound_mask;
 	}
 
 	config->scan_bytes = iio_compute_scan_bytes(indio_dev,
···
 	struct iio_device_config *config)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
-	struct iio_buffer *buffer;
+	struct iio_buffer *buffer, *tmp = NULL;
 	int ret;
 
 	indio_dev->active_scan_mask = config->scan_mask;
 	indio_dev->scan_timestamp = config->scan_timestamp;
 	indio_dev->scan_bytes = config->scan_bytes;
-	indio_dev->currentmode = config->mode;
+	iio_dev_opaque->currentmode = config->mode;
 
 	iio_update_demux(indio_dev);
 
···
 
 	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) {
 		ret = iio_buffer_enable(buffer, indio_dev);
-		if (ret)
+		if (ret) {
+			tmp = buffer;
 			goto err_disable_buffers;
+		}
 	}
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
 		ret = iio_trigger_attach_poll_func(indio_dev->trig,
 						   indio_dev->pollfunc);
 		if (ret)
···
 	return 0;
 
 err_detach_pollfunc:
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
 		iio_trigger_detach_poll_func(indio_dev->trig,
 					     indio_dev->pollfunc);
 	}
 err_disable_buffers:
+	buffer = list_prepare_entry(tmp, &iio_dev_opaque->buffer_list, buffer_list);
 	list_for_each_entry_continue_reverse(buffer, &iio_dev_opaque->buffer_list,
 					     buffer_list)
 		iio_buffer_disable(buffer, indio_dev);
···
 	if (indio_dev->setup_ops->postdisable)
 		indio_dev->setup_ops->postdisable(indio_dev);
 err_undo_config:
-	indio_dev->currentmode = INDIO_DIRECT_MODE;
+	iio_dev_opaque->currentmode = INDIO_DIRECT_MODE;
 	indio_dev->active_scan_mask = NULL;
 
 	return ret;
···
 			ret = ret2;
 	}
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
 		iio_trigger_detach_poll_func(indio_dev->trig,
 					     indio_dev->pollfunc);
 	}
···
 
 	iio_free_scan_mask(indio_dev, indio_dev->active_scan_mask);
 	indio_dev->active_scan_mask = NULL;
-	indio_dev->currentmode = INDIO_DIRECT_MODE;
+	iio_dev_opaque->currentmode = INDIO_DIRECT_MODE;
 
 	return ret;
 }
···
 	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	bool inlist;
 
-	ret = strtobool(buf, &requested_state);
+	ret = kstrtobool(buf, &requested_state);
 	if (ret < 0)
 		return ret;
 
···
 			if (channels[i].scan_index < 0)
 				continue;
 
+			/* Verify that sample bits fit into storage */
+			if (channels[i].scan_type.storagebits <
+			    channels[i].scan_type.realbits +
+			    channels[i].scan_type.shift) {
+				dev_err(&indio_dev->dev,
+					"Channel %d storagebits (%d) < shifted realbits (%d + %d)\n",
+					i, channels[i].scan_type.storagebits,
+					channels[i].scan_type.realbits,
+					channels[i].scan_type.shift);
+				ret = -EINVAL;
+				goto error_cleanup_dynamic;
+			}
+
 			ret = iio_buffer_add_channel_sysfs(indio_dev, buffer,
 							 &channels[i]);
 			if (ret < 0)
···
 	}
 
 	attrn = buffer_attrcount + scan_el_attrcount + ARRAY_SIZE(iio_buffer_attrs);
-	attr = kcalloc(attrn + 1, sizeof(* attr), GFP_KERNEL);
+	attr = kcalloc(attrn + 1, sizeof(*attr), GFP_KERNEL);
 	if (!attr) {
 		ret = -ENOMEM;
 		goto error_free_scan_mask;

drivers/iio/industrialio-core.c

···
 EXPORT_SYMBOL_GPL(iio_device_id);
 
 /**
+ * iio_buffer_enabled() - helper function to test if the buffer is enabled
+ * @indio_dev:		IIO device structure for device
+ */
+bool iio_buffer_enabled(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->currentmode
+		& (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE |
+		   INDIO_BUFFER_SOFTWARE);
+}
+EXPORT_SYMBOL_GPL(iio_buffer_enabled);
+
+/**
  * iio_sysfs_match_string_with_gaps - matches given string in an array with gaps
  * @array: array of strings
  * @n: number of strings in the array
···
 		} else if (*str == '\n') {
 			if (*(str + 1) == '\0')
 				break;
-			else
-				return -EINVAL;
+			return -EINVAL;
 		} else if (!strncmp(str, " dB", sizeof(" dB") - 1) && scale_db) {
 			/* Ignore the dB suffix */
 			str += sizeof(" dB") - 1;
···
 int __iio_device_register(struct iio_dev *indio_dev, struct module *this_mod)
 {
 	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
-	const char *label;
+	struct fwnode_handle *fwnode;
 	int ret;
 
 	if (!indio_dev->info)
 		return -EINVAL;
 
 	iio_dev_opaque->driver_module = this_mod;
-	/* If the calling driver did not initialize of_node, do it here */
-	if (!indio_dev->dev.of_node && indio_dev->dev.parent)
-		indio_dev->dev.of_node = indio_dev->dev.parent->of_node;
 
-	label = of_get_property(indio_dev->dev.of_node, "label", NULL);
-	if (label)
-		indio_dev->label = label;
+	/* If the calling driver did not initialize firmware node, do it here */
+	if (dev_fwnode(&indio_dev->dev))
+		fwnode = dev_fwnode(&indio_dev->dev);
+	else
+		fwnode = dev_fwnode(indio_dev->dev.parent);
+	device_set_node(&indio_dev->dev, fwnode);
+
+	fwnode_property_read_string(fwnode, "label", &indio_dev->label);
 
 	ret = iio_check_unique_scan_index(indio_dev);
 	if (ret < 0)
···
 	mutex_unlock(&indio_dev->mlock);
 }
 EXPORT_SYMBOL_GPL(iio_device_release_direct_mode);
+
+/**
+ * iio_device_get_current_mode() - helper function providing read-only access to
+ *				   the opaque @currentmode variable
+ * @indio_dev:			   IIO device structure for device
+ */
+int iio_device_get_current_mode(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->currentmode;
+}
+EXPORT_SYMBOL_GPL(iio_device_get_current_mode);
 
 subsys_initcall(iio_init);
 module_exit(iio_exit);

drivers/iio/industrialio-event.c

···
 	int ret;
 	bool val;
 
-	ret = strtobool(buf, &val);
+	ret = kstrtobool(buf, &val);
 	if (ret < 0)
 		return ret;
 

drivers/iio/industrialio-trigger.c

···
 	int ret;
 
 	mutex_lock(&indio_dev->mlock);
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
 		mutex_unlock(&indio_dev->mlock);
 		return -EBUSY;
 	}

drivers/iio/light/Kconfig

···
 
 config CM3605
 	tristate "Capella CM3605 ambient light and proximity sensor"
-	depends on OF
 	help
 	  Say Y here if you want to build a driver for Capella CM3605
 	  ambient light and short range proximity sensor.

drivers/iio/light/apds9960.c

···
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &apds9960_buffer_setup_ops);
 	if (ret)
 		return ret;

drivers/iio/light/stk3310.c

···
 	struct mutex lock;
 	bool als_enabled;
 	bool ps_enabled;
+	uint32_t ps_near_level;
 	u64 timestamp;
 	struct regmap *regmap;
 	struct regmap_field *reg_state;
···
 	},
 };
 
+static ssize_t stk3310_read_near_level(struct iio_dev *indio_dev,
+				       uintptr_t priv,
+				       const struct iio_chan_spec *chan,
+				       char *buf)
+{
+	struct stk3310_data *data = iio_priv(indio_dev);
+
+	return sprintf(buf, "%u\n", data->ps_near_level);
+}
+
+static const struct iio_chan_spec_ext_info stk3310_ext_info[] = {
+	{
+		.name = "nearlevel",
+		.shared = IIO_SEPARATE,
+		.read = stk3310_read_near_level,
+	},
+	{ /* sentinel */ }
+};
+
 static const struct iio_chan_spec stk3310_channels[] = {
 	{
 		.type = IIO_LIGHT,
···
 			BIT(IIO_CHAN_INFO_INT_TIME),
 		.event_spec = stk3310_events,
 		.num_event_specs = ARRAY_SIZE(stk3310_events),
+		.ext_info = stk3310_ext_info,
 	}
 };
 
···
 	data = iio_priv(indio_dev);
 	data->client = client;
 	i2c_set_clientdata(client, indio_dev);
+
+	device_property_read_u32(&client->dev, "proximity-near-level",
+				 &data->ps_near_level);
+
 	mutex_init(&data->lock);
 
 	ret = stk3310_regmap_init(data);

drivers/iio/light/tsl2772.c

···
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/property.h>
 #include <linux/slab.h>
+
 #include <linux/iio/events.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
 
 static int tsl2772_read_prox_led_current(struct tsl2772_chip *chip)
 {
-	struct device_node *of_node = chip->client->dev.of_node;
+	struct device *dev = &chip->client->dev;
 	int ret, tmp, i;
 
-	ret = of_property_read_u32(of_node, "led-max-microamp", &tmp);
+	ret = device_property_read_u32(dev, "led-max-microamp", &tmp);
 	if (ret < 0)
 		return ret;
 
···
 		}
 	}
 
-	dev_err(&chip->client->dev, "Invalid value %d for led-max-microamp\n",
-		tmp);
+	dev_err(dev, "Invalid value %d for led-max-microamp\n", tmp);
 
 	return -EINVAL;
-
 }
 
 static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
 {
-	struct device_node *of_node = chip->client->dev.of_node;
+	struct device *dev = &chip->client->dev;
 	int i, ret, num_leds, prox_diode_mask;
 	u32 leds[TSL2772_MAX_PROX_LEDS];
 
-	ret = of_property_count_u32_elems(of_node, "amstaos,proximity-diodes");
+	ret = device_property_count_u32(dev, "amstaos,proximity-diodes");
 	if (ret < 0)
 		return ret;
 
···
 	if (num_leds > TSL2772_MAX_PROX_LEDS)
 		num_leds = TSL2772_MAX_PROX_LEDS;
 
-	ret = of_property_read_u32_array(of_node, "amstaos,proximity-diodes",
-					 leds, num_leds);
+	ret = device_property_read_u32_array(dev, "amstaos,proximity-diodes", leds, num_leds);
 	if (ret < 0) {
-		dev_err(&chip->client->dev,
-			"Invalid value for amstaos,proximity-diodes: %d.\n",
-			ret);
+		dev_err(dev, "Invalid value for amstaos,proximity-diodes: %d.\n", ret);
 		return ret;
 	}
 
···
 		else if (leds[i] == 1)
 			prox_diode_mask |= TSL2772_DIODE1;
 		else {
-			dev_err(&chip->client->dev,
-				"Invalid value %d in amstaos,proximity-diodes.\n",
-				leds[i]);
+			dev_err(dev, "Invalid value %d in amstaos,proximity-diodes.\n", leds[i]);
 			return -EINVAL;
 		}
 	}

drivers/iio/magnetometer/Kconfig

···
 config AK8974
 	tristate "Asahi Kasei AK8974 3-Axis Magnetometer"
 	depends on I2C
-	depends on OF
 	select REGMAP_I2C
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER

drivers/iio/magnetometer/rm3100-core.c

···
 	struct iio_dev *indio_dev = d;
 	struct rm3100_data *data = iio_priv(indio_dev);
 
-	switch (indio_dev->currentmode) {
-	case INDIO_DIRECT_MODE:
+	if (!iio_buffer_enabled(indio_dev))
 		complete(&data->measuring_done);
-		break;
-	case INDIO_BUFFER_TRIGGERED:
+	else
 		iio_trigger_poll(data->drdy_trig);
-		break;
-	default:
-		dev_err(indio_dev->dev.parent,
-			"device mode out of control, current mode: %d",
-			indio_dev->currentmode);
-	}
 
 	return IRQ_WAKE_THREAD;
 }
···
 			goto unlock_return;
 	}
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_buffer_enabled(indio_dev)) {
 		/* Writing TMRC registers requires CMM reset. */
 		ret = regmap_write(regmap, RM3100_REG_CMM, 0);
 		if (ret < 0)
···
 	indio_dev->channels = rm3100_channels;
 	indio_dev->num_channels = ARRAY_SIZE(rm3100_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_TRIGGERED;
-	indio_dev->currentmode = INDIO_DIRECT_MODE;
 
 	if (!irq)
 		data->use_interrupt = false;

drivers/iio/magnetometer/st_magn_core.c

···
 static int st_magn_write_raw(struct iio_dev *indio_dev,
 		struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
-		err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
-		break;
+		return st_sensors_set_fullscale_by_gain(indio_dev, val2);
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
-	default:
-		err = -EINVAL;
-	}
 
-	return err;
+		return st_sensors_set_odr(indio_dev, val);
+	default:
+		return -EINVAL;
+	}
 }
 
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();

drivers/iio/multiplexer/Kconfig

···
 config IIO_MUX
 	tristate "IIO multiplexer driver"
 	select MULTIPLEXER
-	depends on OF || COMPILE_TEST
 	help
 	  Say yes here to build support for the IIO multiplexer.
 

drivers/iio/multiplexer/iio-mux.c

···
 #include <linux/err.h>
 #include <linux/iio/consumer.h>
 #include <linux/iio/iio.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/mux/consumer.h>
-#include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 
 struct mux_ext_info_cache {
 	char *data;
···
 	return 0;
 }
 
-/*
- * Same as of_property_for_each_string(), but also keeps track of the
- * index of each string.
- */
-#define of_property_for_each_string_index(np, propname, prop, s, i)	\
-	for (prop = of_find_property(np, propname, NULL),		\
-	     s = of_prop_next_string(prop, NULL),			\
-	     i = 0;							\
-	     s;								\
-	     s = of_prop_next_string(prop, s),				\
-	     i++)
-
 static int mux_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *np = pdev->dev.of_node;
 	struct iio_dev *indio_dev;
 	struct iio_channel *parent;
 	struct mux *mux;
-	struct property *prop;
-	const char *label;
+	const char **labels;
+	int all_children;
+	int children;
 	u32 state;
 	int sizeof_ext_info;
-	int children;
 	int sizeof_priv;
 	int i;
 	int ret;
-
-	if (!np)
-		return -ENODEV;
 
 	parent = devm_iio_channel_get(dev, "parent");
 	if (IS_ERR(parent))
···
 		sizeof_ext_info *= sizeof(*mux->ext_info);
 	}
 
+	all_children = device_property_string_array_count(dev, "channels");
+	if (all_children < 0)
+		return all_children;
+
+	labels = devm_kmalloc_array(dev, all_children, sizeof(*labels), GFP_KERNEL);
+	if (!labels)
+		return -ENOMEM;
+
+	ret = device_property_read_string_array(dev, "channels", labels, all_children);
+	if (ret < 0)
+		return ret;
+
 	children = 0;
-	of_property_for_each_string(np, "channels", prop, label) {
-		if (*label)
+	for (state = 0; state < all_children; state++) {
+		if (*labels[state])
 			children++;
 	}
 	if (children <= 0) {
···
 	mux->cached_state = -1;
 
 	mux->delay_us = 0;
-	of_property_read_u32(np, "settle-time-us", &mux->delay_us);
+	device_property_read_u32(dev, "settle-time-us", &mux->delay_us);
 
 	indio_dev->name = dev_name(dev);
 	indio_dev->info = &mux_info;
···
 	}
 
 	i = 0;
-	of_property_for_each_string_index(np, "channels", prop, label, state) {
-		if (!*label)
+	for (state = 0; state < all_children; state++) {
+		if (!*labels[state])
 			continue;
 
-		ret = mux_configure_channel(dev, mux, state, label, i++);
+		ret = mux_configure_channel(dev, mux, state, labels[state], i++);
 		if (ret < 0)
 			return ret;
 	}

drivers/iio/pressure/st_pressure_core.c

···
 			      int val2,
 			      long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
+
+		return st_sensors_set_odr(indio_dev, val);
 	default:
 		return -EINVAL;
 	}

drivers/iio/proximity/mb1232.c

···
  * https://www.maxbotix.com/documents/I2CXL-MaxSonar-EZ_Datasheet.pdf
  */
 
+#include <linux/bitops.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
-#include <linux/of_irq.h>
 #include <linux/delay.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/bitops.h>
+#include <linux/property.h>
+
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
···
 
 	init_completion(&data->ranging);
 
-	data->irqnr = irq_of_parse_and_map(dev->of_node, 0);
+	data->irqnr = fwnode_irq_get(dev_fwnode(&client->dev), 0);
 	if (data->irqnr <= 0) {
 		/* usage of interrupt is optional */
 		data->irqnr = -1;

drivers/iio/proximity/ping.c

···
 #include <linux/err.h>
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/sched.h>
···
 
 	data = iio_priv(indio_dev);
 	data->dev = dev;
-	data->cfg = of_device_get_match_data(dev);
+	data->cfg = device_get_match_data(dev);
 
 	mutex_init(&data->lock);
 	init_completion(&data->rising);

drivers/iio/proximity/vl53l0x-i2c.c

···
 	u16 tries = 20;
 	u8 buffer[12];
 	int ret;
+	unsigned long time_left;
 
 	ret = i2c_smbus_write_byte_data(client, VL_REG_SYSRANGE_START, 1);
 	if (ret < 0)
···
 	if (data->client->irq) {
 		reinit_completion(&data->completion);
 
-		ret = wait_for_completion_timeout(&data->completion, HZ/10);
-		if (ret < 0)
-			return ret;
-		else if (ret == 0)
+		time_left = wait_for_completion_timeout(&data->completion, HZ/10);
+		if (time_left == 0)
 			return -ETIMEDOUT;
 
 		vl53l0x_clear_irq(data);

drivers/iio/temperature/ltc2983.c

···
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of_gpio.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
+
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
 
 /* register map */
 #define LTC2983_STATUS_REG			0x0000
···
 
 struct ltc2983_custom_sensor {
 	/* raw table sensor data */
-	u8 *table;
+	void *table;
 	size_t size;
 	/* address offset */
 	s8 offset;
···
 	return regmap_bulk_write(st->regmap, reg, custom->table, custom->size);
 }
 
-static struct ltc2983_custom_sensor *__ltc2983_custom_sensor_new(
-						struct ltc2983_data *st,
-						const struct device_node *np,
-						const char *propname,
-						const bool is_steinhart,
-						const u32 resolution,
-						const bool has_signed)
+static struct ltc2983_custom_sensor *
+__ltc2983_custom_sensor_new(struct ltc2983_data *st, const struct fwnode_handle *fn,
+			    const char *propname, const bool is_steinhart,
+			    const u32 resolution, const bool has_signed)
 {
 	struct ltc2983_custom_sensor *new_custom;
-	u8 index, n_entries, tbl = 0;
 	struct device *dev = &st->spi->dev;
 	/*
 	 * For custom steinhart, the full u32 is taken. For all the others
 	 * the MSB is discarded.
 	 */
 	const u8 n_size = is_steinhart ? 4 : 3;
-	const u8 e_size = is_steinhart ? sizeof(u32) : sizeof(u64);
+	u8 index, n_entries;
+	int ret;
 
-	n_entries = of_property_count_elems_of_size(np, propname, e_size);
+	if (is_steinhart)
+		n_entries = fwnode_property_count_u32(fn, propname);
+	else
+		n_entries = fwnode_property_count_u64(fn, propname);
 	/* n_entries must be an even number */
 	if (!n_entries || (n_entries % 2) != 0) {
 		dev_err(dev, "Number of entries either 0 or not even\n");
···
 	new_custom->size = n_entries * n_size;
 	/* check Steinhart size */
 	if (is_steinhart && new_custom->size != LTC2983_CUSTOM_STEINHART_SIZE) {
-		dev_err(dev, "Steinhart sensors size(%zu) must be 24",
-							new_custom->size);
+		dev_err(dev, "Steinhart sensors size(%zu) must be %u\n", new_custom->size,
+			LTC2983_CUSTOM_STEINHART_SIZE);
 		return ERR_PTR(-EINVAL);
 	}
 	/* Check space on the table. */
···
 	}
 
 	/* allocate the table */
-	new_custom->table = devm_kzalloc(dev, new_custom->size, GFP_KERNEL);
+	if (is_steinhart)
+		new_custom->table = devm_kcalloc(dev, n_entries, sizeof(u32), GFP_KERNEL);
+	else
+		new_custom->table = devm_kcalloc(dev, n_entries, sizeof(u64), GFP_KERNEL);
 	if (!new_custom->table)
 		return ERR_PTR(-ENOMEM);
 
-	for (index = 0; index < n_entries; index++) {
-		u64 temp = 0, j;
-		/*
-		 * Steinhart sensors are configured with raw values in the
-		 * devicetree. For the other sensors we must convert the
-		 * value to raw. The odd index's correspond to temperarures
-		 * and always have 1/1024 of resolution. Temperatures also
-		 * come in kelvin, so signed values is not possible
-		 */
-		if (!is_steinhart) {
-			of_property_read_u64_index(np, propname, index, &temp);
+	/*
+	 * Steinhart sensors are configured with raw values in the firmware
+	 * node. For the other sensors we must convert the value to raw.
+	 * The odd index's correspond to temperatures and always have 1/1024
+	 * of resolution. Temperatures also come in Kelvin, so signed values
+	 * are not possible.
+	 */
+	if (is_steinhart) {
+		ret = fwnode_property_read_u32_array(fn, propname, new_custom->table, n_entries);
+		if (ret < 0)
+			return ERR_PTR(ret);
+
+		cpu_to_be32_array(new_custom->table, new_custom->table, n_entries);
+	} else {
+		ret = fwnode_property_read_u64_array(fn, propname, new_custom->table, n_entries);
+		if (ret < 0)
+			return ERR_PTR(ret);
+
+		for (index = 0; index < n_entries; index++) {
+			u64 temp = ((u64 *)new_custom->table)[index];
 
 			if ((index % 2) != 0)
 				temp = __convert_to_raw(temp, 1024);
···
 				temp = __convert_to_raw_sign(temp, resolution);
 			else
 				temp = __convert_to_raw(temp, resolution);
-		} else {
-			u32 t32;
 
-			of_property_read_u32_index(np, propname, index, &t32);
-			temp = t32;
+			put_unaligned_be24(temp, new_custom->table + index * 3);
 		}
-
-		for (j = 0; j < n_size; j++)
-			new_custom->table[tbl++] =
-				temp >> (8 * (n_size - j - 1));
 	}
 
 	new_custom->is_steinhart = is_steinhart;
···
 	return __ltc2983_chan_assign_common(st, sensor, chan_val);
 }
 
-static struct ltc2983_sensor *ltc2983_thermocouple_new(
-					const struct device_node *child,
-					struct ltc2983_data *st,
-					const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_thermocouple_new(const struct fwnode_handle *child, struct ltc2983_data *st,
+			 const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_thermocouple *thermo;
-	struct device_node *phandle;
+	struct fwnode_handle *ref;
 	u32 oc_current;
 	int ret;
 
···
 	if (!thermo)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_property_read_bool(child, "adi,single-ended"))
+	if (fwnode_property_read_bool(child, "adi,single-ended"))
 		thermo->sensor_config = LTC2983_THERMOCOUPLE_SGL(1);
 
-	ret = of_property_read_u32(child, "adi,sensor-oc-current-microamp",
-				   &oc_current);
+	ret = fwnode_property_read_u32(child, "adi,sensor-oc-current-microamp", &oc_current);
 	if (!ret) {
 		switch (oc_current) {
 		case 10:
···
 		return ERR_PTR(-EINVAL);
 	}
 
-	phandle = of_parse_phandle(child, "adi,cold-junction-handle", 0);
-	if (phandle) {
-		int ret;
-
-		ret = of_property_read_u32(phandle, "reg",
-					   &thermo->cold_junction_chan);
+	ref = fwnode_find_reference(child, "adi,cold-junction-handle", 0);
+	if (IS_ERR(ref)) {
+		ref = NULL;
+	} else {
+		ret = fwnode_property_read_u32(ref, "reg", &thermo->cold_junction_chan);
 		if (ret) {
 			/*
 			 * This would be catched later but we can just return
 			 * the error right away.
 			 */
 			dev_err(&st->spi->dev, "Property reg must be given\n");
-			of_node_put(phandle);
-			return ERR_PTR(-EINVAL);
+			goto fail;
 		}
 	}
 
···
 							     propname, false,
 							     16384, true);
 		if (IS_ERR(thermo->custom)) {
-			of_node_put(phandle);
-			return ERR_CAST(thermo->custom);
+			ret = PTR_ERR(thermo->custom);
+			goto fail;
 		}
 	}
 
···
 	thermo->sensor.fault_handler = ltc2983_thermocouple_fault_handler;
 	thermo->sensor.assign_chan = ltc2983_thermocouple_assign_chan;
 
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return &thermo->sensor;
+
+fail:
+	fwnode_handle_put(ref);
+	return ERR_PTR(ret);
 }
 
-static struct ltc2983_sensor *ltc2983_rtd_new(const struct device_node *child,
-					  struct ltc2983_data *st,
-					  const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
+		const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_rtd *rtd;
 	int ret = 0;
 	struct device *dev = &st->spi->dev;
-	struct device_node *phandle;
+	struct fwnode_handle *ref;
 	u32 excitation_current = 0, n_wires = 0;
 
 	rtd = devm_kzalloc(dev, sizeof(*rtd), GFP_KERNEL);
 	if (!rtd)
 		return ERR_PTR(-ENOMEM);
 
-	phandle = of_parse_phandle(child, "adi,rsense-handle", 0);
-	if (!phandle) {
+	ref = fwnode_find_reference(child, "adi,rsense-handle", 0);
+	if (IS_ERR(ref)) {
 		dev_err(dev, "Property adi,rsense-handle missing or invalid");
-		return ERR_PTR(-EINVAL);
+		return ERR_CAST(ref);
 	}
 
-	ret = of_property_read_u32(phandle, "reg", &rtd->r_sense_chan);
+	ret = fwnode_property_read_u32(ref, "reg", &rtd->r_sense_chan);
 	if (ret) {
 		dev_err(dev, "Property reg must be given\n");
 		goto fail;
 	}
 
-	ret = of_property_read_u32(child, "adi,number-of-wires", &n_wires);
+	ret = fwnode_property_read_u32(child, "adi,number-of-wires", &n_wires);
 	if (!ret) {
 		switch (n_wires) {
 		case 2:
···
 		}
 	}
 
-	if (of_property_read_bool(child, "adi,rsense-share")) {
+	if (fwnode_property_read_bool(child, "adi,rsense-share")) {
 		/* Current rotation is only available with rsense sharing */
-		if (of_property_read_bool(child, "adi,current-rotate")) {
+		if (fwnode_property_read_bool(child, "adi,current-rotate")) {
 			if (n_wires == 2 || n_wires == 3) {
 				dev_err(dev,
 					"Rotation not allowed for 2/3 Wire RTDs");
···
 							  "adi,custom-rtd",
 							  false, 2048, false);
 		if (IS_ERR(rtd->custom)) {
-			of_node_put(phandle);
-			return ERR_CAST(rtd->custom);
+			ret = PTR_ERR(rtd->custom);
+			goto fail;
 		}
 	}
 
···
 	rtd->sensor.fault_handler = ltc2983_common_fault_handler;
 	rtd->sensor.assign_chan = ltc2983_rtd_assign_chan;
 
-	ret = of_property_read_u32(child, "adi,excitation-current-microamp",
-				   &excitation_current);
+	ret = fwnode_property_read_u32(child, "adi,excitation-current-microamp",
+				       &excitation_current);
 	if (ret) {
 		/* default to 5uA */
 		rtd->excitation_current = 1;
···
 		}
 	}
 
-	of_property_read_u32(child, "adi,rtd-curve", &rtd->rtd_curve);
+	fwnode_property_read_u32(child, "adi,rtd-curve", &rtd->rtd_curve);
 
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return &rtd->sensor;
 fail:
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return ERR_PTR(ret);
 }
 
-static struct ltc2983_sensor *ltc2983_thermistor_new(
-					const struct device_node *child,
-					struct ltc2983_data *st,
-					const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *st,
+		       const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_thermistor *thermistor;
 	struct device *dev = &st->spi->dev;
-	struct device_node *phandle;
+	struct fwnode_handle *ref;
 	u32 excitation_current = 0;
 	int ret = 0;
 
···
 	if (!thermistor)
 		return ERR_PTR(-ENOMEM);
 
-	phandle = of_parse_phandle(child, "adi,rsense-handle", 0);
-	if (!phandle) {
+	ref = fwnode_find_reference(child, "adi,rsense-handle", 0);
+	if (IS_ERR(ref)) {
 		dev_err(dev, "Property adi,rsense-handle missing or invalid");
-		return ERR_PTR(-EINVAL);
+		return ERR_CAST(ref);
 	}
 
-	ret = of_property_read_u32(phandle, "reg", &thermistor->r_sense_chan);
+	ret = fwnode_property_read_u32(ref, "reg", &thermistor->r_sense_chan);
 	if (ret) {
 		dev_err(dev, "rsense channel must be configured...\n");
 		goto fail;
 	}
 
-	if (of_property_read_bool(child, "adi,single-ended")) {
+	if (fwnode_property_read_bool(child, "adi,single-ended")) {
 		thermistor->sensor_config = LTC2983_THERMISTOR_SGL(1);
-	} else if (of_property_read_bool(child, "adi,rsense-share")) {
+	} else if (fwnode_property_read_bool(child, "adi,rsense-share")) {
 		/* rotation is only possible if sharing rsense */
-		if (of_property_read_bool(child, "adi,current-rotate"))
+		if (fwnode_property_read_bool(child, "adi,current-rotate"))
 			thermistor->sensor_config =
 						LTC2983_THERMISTOR_C_ROTATE(1);
 		else
···
 								 steinhart,
 								 64, false);
 		if (IS_ERR(thermistor->custom)) {
-			of_node_put(phandle);
-			return ERR_CAST(thermistor->custom);
+			ret = PTR_ERR(thermistor->custom);
+			goto fail;
 		}
 	}
 	/* set common parameters */
 	thermistor->sensor.fault_handler = ltc2983_common_fault_handler;
 	thermistor->sensor.assign_chan = ltc2983_thermistor_assign_chan;
 
-	ret = of_property_read_u32(child, "adi,excitation-current-nanoamp",
-				   &excitation_current);
+	ret = fwnode_property_read_u32(child, "adi,excitation-current-nanoamp",
+				       &excitation_current);
 	if (ret) {
 		/* Auto range is not allowed for custom sensors */
 		if (sensor->type >= LTC2983_SENSOR_THERMISTOR_STEINHART)
···
 		}
 	}
 
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return &thermistor->sensor;
 fail:
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return ERR_PTR(ret);
 }
 
-static struct ltc2983_sensor *ltc2983_diode_new(
-					const struct device_node *child,
-					const struct ltc2983_data *st,
-					const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_diode_new(const struct fwnode_handle *child, const struct ltc2983_data *st,
+		  const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_diode *diode;
 	u32 temp = 0, excitation_current = 0;
···
 	if (!diode)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_property_read_bool(child, "adi,single-ended"))
+	if (fwnode_property_read_bool(child, "adi,single-ended"))
 		diode->sensor_config = LTC2983_DIODE_SGL(1);
 
-	if (of_property_read_bool(child, "adi,three-conversion-cycles"))
+	if (fwnode_property_read_bool(child, "adi,three-conversion-cycles"))
 		diode->sensor_config |= LTC2983_DIODE_3_CONV_CYCLE(1);
 
-	if (of_property_read_bool(child, "adi,average-on"))
+	if (fwnode_property_read_bool(child, "adi,average-on"))
 		diode->sensor_config |= LTC2983_DIODE_AVERAGE_ON(1);
 
 	/* validate channel index */
···
 	diode->sensor.fault_handler = ltc2983_common_fault_handler;
 	diode->sensor.assign_chan = ltc2983_diode_assign_chan;
 
-	ret = of_property_read_u32(child, "adi,excitation-current-microamp",
-				   &excitation_current);
+	ret = fwnode_property_read_u32(child, "adi,excitation-current-microamp",
+				       &excitation_current);
 	if (!ret) {
 		switch (excitation_current) {
 		case 10:
···
 		}
 	}
 
-	of_property_read_u32(child, "adi,ideal-factor-value", &temp);
+	fwnode_property_read_u32(child, "adi,ideal-factor-value", &temp);
 
 	/* 2^20 resolution */
 	diode->ideal_factor_value = __convert_to_raw(temp, 1048576);
···
 	return &diode->sensor;
 }
 
-static struct ltc2983_sensor *ltc2983_r_sense_new(struct device_node *child,
+static struct ltc2983_sensor *ltc2983_r_sense_new(struct fwnode_handle *child,
 					struct ltc2983_data *st,
 					const struct ltc2983_sensor *sensor)
 {
···
 		return ERR_PTR(-EINVAL);
 	}
 
-	ret = of_property_read_u32(child, "adi,rsense-val-milli-ohms", &temp);
+	ret = fwnode_property_read_u32(child, "adi,rsense-val-milli-ohms", &temp);
 	if (ret) {
 		dev_err(&st->spi->dev, "Property adi,rsense-val-milli-ohms missing\n");
 		return ERR_PTR(-EINVAL);
···
 	return &rsense->sensor;
 }
 
-static struct ltc2983_sensor *ltc2983_adc_new(struct device_node *child,
+static struct ltc2983_sensor *ltc2983_adc_new(struct fwnode_handle *child,
 					 struct ltc2983_data *st,
 					 const struct ltc2983_sensor *sensor)
 {
···
 	if (!adc)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_property_read_bool(child, "adi,single-ended"))
+	if (fwnode_property_read_bool(child, "adi,single-ended"))
 		adc->single_ended = true;
 
 	if (!adc->single_ended &&
···
 
 static int ltc2983_parse_dt(struct ltc2983_data *st)
 {
-	struct device_node *child;
 	struct device *dev = &st->spi->dev;
+	struct fwnode_handle *child;
 	int ret = 0, chan = 0, channel_avail_mask = 0;
 
-	of_property_read_u32(dev->of_node, "adi,mux-delay-config-us",
-			     &st->mux_delay_config);
+	device_property_read_u32(dev, "adi,mux-delay-config-us", &st->mux_delay_config);
 
-	of_property_read_u32(dev->of_node, "adi,filter-notch-freq",
-			     &st->filter_notch_freq);
+	device_property_read_u32(dev, "adi,filter-notch-freq", &st->filter_notch_freq);
 
-	st->num_channels = of_get_available_child_count(dev->of_node);
+	st->num_channels = device_get_child_node_count(dev);
 	if (!st->num_channels) {
 		dev_err(&st->spi->dev, "At least one channel must be given!");
 		return -EINVAL;
···
 		return -ENOMEM;
 
 	st->iio_channels = st->num_channels;
-	for_each_available_child_of_node(dev->of_node, child) {
+	device_for_each_child_node(dev, child) {
 		struct ltc2983_sensor sensor;
 
-		ret = of_property_read_u32(child, "reg", &sensor.chan);
+		ret = fwnode_property_read_u32(child, "reg", &sensor.chan);
 		if (ret) {
 			dev_err(dev, "reg property must given for child nodes\n");
 			goto put_child;
···
 		if (sensor.chan < LTC2983_MIN_CHANNELS_NR ||
 		    sensor.chan > LTC2983_MAX_CHANNELS_NR) {
 			ret = -EINVAL;
-			dev_err(dev,
-				"chan:%d must be from 1 to 20\n", sensor.chan);
+			dev_err(dev, "chan:%d must be from %u to %u\n", sensor.chan,
+				LTC2983_MIN_CHANNELS_NR, LTC2983_MAX_CHANNELS_NR);
 			goto put_child;
 		} else if (channel_avail_mask & BIT(sensor.chan)) {
 			ret = -EINVAL;
···
 			goto put_child;
 		}
 
-		ret = of_property_read_u32(child, "adi,sensor-type",
-					       &sensor.type);
+		ret = fwnode_property_read_u32(child, "adi,sensor-type", &sensor.type);
 		if (ret) {
 			dev_err(dev,
 				"adi,sensor-type property must given for child nodes\n");
···
 
 	return 0;
 put_child:
-	of_node_put(child);
+	fwnode_handle_put(child);
 	return ret;
 }
 

drivers/iio/temperature/max31856.c

···
  */
 
 #include <linux/ctype.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/err.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
 	indio_dev->channels = max31856_channels;
 	indio_dev->num_channels = ARRAY_SIZE(max31856_channels);
 
-	ret = of_property_read_u32(spi->dev.of_node, "thermocouple-type",
-				   &data->thermocouple_type);
-
+	ret = device_property_read_u32(&spi->dev, "thermocouple-type", &data->thermocouple_type);
 	if (ret) {
 		dev_info(&spi->dev,
 			 "Could not read thermocouple type DT property, configuring as a K-Type\n");

drivers/iio/temperature/max31865.c

···
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/init.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <asm/unaligned.h>
 
···
 	indio_dev->channels = max31865_channels;
 	indio_dev->num_channels = ARRAY_SIZE(max31865_channels);
 
-	if (of_property_read_bool(spi->dev.of_node, "maxim,3-wire")) {
+	if (device_property_read_bool(&spi->dev, "maxim,3-wire")) {
 		/* select 3 wire */
 		data->three_wire = 1;
 	} else {

drivers/iio/trigger/iio-trig-sysfs.c

···
 
 static int iio_sysfs_trigger_remove(int id)
 {
-	bool foundit = false;
-	struct iio_sysfs_trig *t;
+	struct iio_sysfs_trig *t = NULL, *iter;
 
 	mutex_lock(&iio_sysfs_trig_list_mut);
-	list_for_each_entry(t, &iio_sysfs_trig_list, l)
-		if (id == t->id) {
-			foundit = true;
+	list_for_each_entry(iter, &iio_sysfs_trig_list, l)
+		if (id == iter->id) {
+			t = iter;
 			break;
 		}
-	if (!foundit) {
+	if (!t) {
 		mutex_unlock(&iio_sysfs_trig_list_mut);
 		return -EINVAL;
 	}

drivers/staging/iio/cdc/ad7746.c

···
 	int ret, timeout = 10;
 	bool doit;
 
-	ret = strtobool(buf, &doit);
+	ret = kstrtobool(buf, &doit);
 	if (ret < 0)
 		return ret;
 

drivers/staging/iio/impedance-analyzer/ad5933.c

···
 	indio_dev->num_channels = ARRAY_SIZE(ad5933_channels);
 
 	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
-					  INDIO_BUFFER_SOFTWARE,
 					  &ad5933_ring_setup_ops);
 	if (ret)
 		return ret;

drivers/staging/iio/resolver/ad2s1210.c

···
 		ret = IIO_VAL_INT;
 		break;
 	case IIO_ANGL_VEL:
-		negative = st->rx[0] & 0x80;
 		vel = be16_to_cpup((__be16 *)st->rx);
 		vel >>= 16 - st->resolution;
 		if (vel & 0x8000) {

include/linux/iio/adc/ad_sigma_delta.h

···
 /**
  * struct ad_sigma_delta_info - Sigma Delta driver specific callbacks and options
  * @set_channel: Will be called to select the current channel, may be NULL.
+ * @append_status: Will be called to enable status append at the end of the sample, may be NULL.
  * @set_mode: Will be called to select the current mode, may be NULL.
+ * @disable_all: Will be called to disable all channels, may be NULL.
  * @postprocess_sample: Is called for each sampled data word, can be used to
  *		modify or drop the sample data, it, may be NULL.
  * @has_registers: true if the device has writable and readable registers, false
  *		if there is just one read-only sample data shift register.
  * @addr_shift: Shift of the register address in the communications register.
  * @read_mask: Mask for the communications register having the read bit set.
+ * @status_ch_mask: Mask for the channel number stored in status register.
  * @data_reg: Address of the data register, if 0 the default address of 0x3 will
  *   be used.
  * @irq_flags: flags for the interrupt used by the triggered buffer
+ * @num_slots: Number of sequencer slots
  */
 struct ad_sigma_delta_info {
 	int (*set_channel)(struct ad_sigma_delta *, unsigned int channel);
+	int (*append_status)(struct ad_sigma_delta *, bool append);
 	int (*set_mode)(struct ad_sigma_delta *, enum ad_sigma_delta_mode mode);
+	int (*disable_all)(struct ad_sigma_delta *);
 	int (*postprocess_sample)(struct ad_sigma_delta *, unsigned int raw_sample);
 	bool has_registers;
 	unsigned int addr_shift;
 	unsigned int read_mask;
+	unsigned int status_ch_mask;
 	unsigned int data_reg;
 	unsigned long irq_flags;
+	unsigned int num_slots;
 };
 
 /**
···
 	uint8_t			comm;
 
 	const struct ad_sigma_delta_info *info;
+	unsigned int		active_slots;
+	unsigned int		current_slot;
+	unsigned int		num_slots;
+	bool			status_appended;
+	/* map slots to channels in order to know what to expect from devices */
+	unsigned int		*slots;
+	uint8_t			*samples_buf;
 
 	/*
 	 * DMA (thus cache coherency maintenance) requires the
···
 {
 	if (sd->info->set_channel)
 		return sd->info->set_channel(sd, channel);
+
+	return 0;
+}
+
+static inline int ad_sigma_delta_append_status(struct ad_sigma_delta *sd, bool append)
+{
+	int ret;
+
+	if (sd->info->append_status) {
+		ret = sd->info->append_status(sd, append);
+		if (ret < 0)
+			return ret;
+
+		sd->status_appended = append;
+	}
+
+	return 0;
+}
+
+static inline int ad_sigma_delta_disable_all(struct ad_sigma_delta *sd)
+{
+	if (sd->info->disable_all)
+		return sd->info->disable_all(sd);
 
 	return 0;
 }

include/linux/iio/common/st_sensors.h

···
  * @hw_irq_trigger: if we're using the hardware interrupt on the sensor.
  * @hw_timestamp: Latest timestamp from the interrupt handler, when in use.
  * @buffer_data: Data used by buffer part.
+ * @odr_lock: Local lock for preventing concurrent ODR accesses/changes
  */
 struct st_sensor_data {
 	struct iio_trigger *trig;
···
 	s64 hw_timestamp;
 
 	char buffer_data[ST_SENSORS_MAX_BUFFER_SIZE] ____cacheline_aligned;
+
+	struct mutex odr_lock;
 };
 
 #ifdef CONFIG_IIO_BUFFER

include/linux/iio/iio-opaque.h

···
  * struct iio_dev_opaque - industrial I/O device opaque information
  * @indio_dev:			public industrial I/O device information
  * @id:			used to identify device internally
+ * @currentmode:		operating mode currently in use, may be eventually
+ *				checked by device drivers but should be considered
+ *				read-only as this is a core internal bit
  * @driver_module:		used to make it harder to undercut users
  * @info_exist_lock:		lock to prevent use during removal
  * @trig_readonly:		mark the current trigger immutable
···
  */
 struct iio_dev_opaque {
 	struct iio_dev			indio_dev;
+	int				currentmode;
 	int				id;
 	struct module			*driver_module;
 	struct mutex			info_exist_lock;

include/linux/iio/iio.h

···
 s64 iio_get_time_ns(const struct iio_dev *indio_dev);
 unsigned int iio_get_time_res(const struct iio_dev *indio_dev);
 
-/* Device operating modes */
+/*
+ * Device operating modes
+ * @INDIO_DIRECT_MODE: There is an access to either:
+ * a) The last single value available for devices that do not provide
+ *    on-demand reads.
+ * b) A new value after performing an on-demand read otherwise.
+ * On most devices, this is a single-shot read. On some devices with data
+ * streams without an 'on-demand' function, this might also be the 'last value'
+ * feature. Above all, this mode internally means that we are not in any of the
+ * other modes, and sysfs reads should work.
+ * Device drivers should inform the core if they support this mode.
+ * @INDIO_BUFFER_TRIGGERED: Common mode when dealing with kfifo buffers.
+ * It indicates that an explicit trigger is required. This requests the core to
+ * attach a poll function when enabling the buffer, which is indicated by the
+ * _TRIGGERED suffix.
+ * The core will ensure this mode is set when registering a triggered buffer
+ * with iio_triggered_buffer_setup().
+ * @INDIO_BUFFER_SOFTWARE: Another kfifo buffer mode, but not event triggered.
+ * No poll function can be attached because there is no triggered infrastructure
+ * we can use to cause capture. There is a kfifo that the driver will fill, but
+ * not "only one scan at a time". Typically, hardware will have a buffer that
+ * can hold multiple scans. Software may read one or more scans at a single time
+ * and push the available data to a Kfifo. This means the core will not attach
+ * any poll function when enabling the buffer.
+ * The core will ensure this mode is set when registering a simple kfifo buffer
+ * with devm_iio_kfifo_buffer_setup().
+ * @INDIO_BUFFER_HARDWARE: For specific hardware, if unsure do not use this mode.
+ * Same as above but this time the buffer is not a kfifo where we have direct
+ * access to the data. Instead, the consumer driver must access the data through
+ * non software visible channels (or DMA when there is no demux possible in
+ * software)
+ * The core will ensure this mode is set when registering a dmaengine buffer
+ * with devm_iio_dmaengine_buffer_setup().
+ * @INDIO_EVENT_TRIGGERED: Very unusual mode.
+ * Triggers usually refer to an external event which will start data capture.
+ * Here it is kind of the opposite as, a particular state of the data might
+ * produce an event which can be considered as an event. We don't necessarily
+ * have access to the data itself, but to the event produced. For example, this
+ * can be a threshold detector. The internal path of this mode is very close to
+ * the INDIO_BUFFER_TRIGGERED mode.
+ * The core will ensure this mode is set when registering a triggered event.
+ * @INDIO_HARDWARE_TRIGGERED: Very unusual mode.
+ * Here, triggers can result in data capture and can be routed to multiple
+ * hardware components, which make them close to regular triggers in the way
+ * they must be managed by the core, but without the entire interrupts/poll
+ * functions burden. Interrupts are irrelevant as the data flow is hardware
+ * mediated and distributed.
+ */
 #define INDIO_DIRECT_MODE		0x01
 #define INDIO_BUFFER_TRIGGERED		0x02
 #define INDIO_BUFFER_SOFTWARE		0x04
···
 
 /**
  * struct iio_dev - industrial I/O device
- * @modes:		[DRIVER] operating modes supported by device
- * @currentmode:	[INTERN] current operating mode
+ * @modes:		[DRIVER] bitmask listing all the operating modes
+ *			supported by the IIO device. This list should be
+ *			initialized before registering the IIO device. It can
+ *			also be filed up by the IIO core, as a result of
+ *			enabling particular features in the driver
+ *			(see iio_triggered_event_setup()).
  * @dev:		[DRIVER] device structure, should be assigned a parent
  *			and owner
  * @buffer:		[DRIVER] any buffer present
···
  */
 struct iio_dev {
 	int				modes;
-	int				currentmode;
 	struct device			dev;
 
 	struct iio_buffer		*buffer;
···
 };
 
 int iio_device_id(struct iio_dev *indio_dev);
+int iio_device_get_current_mode(struct iio_dev *indio_dev);
+bool iio_buffer_enabled(struct iio_dev *indio_dev);
 
 const struct iio_chan_spec
 *iio_find_channel_from_si(struct iio_dev *indio_dev, int si);
···
 __printf(2, 3)
 struct iio_trigger *devm_iio_trigger_alloc(struct device *parent,
 					   const char *fmt, ...);
-/**
- * iio_buffer_enabled() - helper function to test if the buffer is enabled
- * @indio_dev:		IIO device structure for device
- **/
-static inline bool iio_buffer_enabled(struct iio_dev *indio_dev)
-{
-	return indio_dev->currentmode
-		& (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE |
-		   INDIO_BUFFER_SOFTWARE);
-}
 
 /**
  * iio_get_debugfs_dentry() - helper function to get the debugfs_dentry

include/linux/iio/kfifo_buf.h

···
 
 int devm_iio_kfifo_buffer_setup_ext(struct device *dev,
 				    struct iio_dev *indio_dev,
-				    int mode_flags,
 				    const struct iio_buffer_setup_ops *setup_ops,
 				    const struct attribute **buffer_attrs);
 
-#define devm_iio_kfifo_buffer_setup(dev, indio_dev, mode_flags, setup_ops)	\
-	devm_iio_kfifo_buffer_setup_ext((dev), (indio_dev), (mode_flags), (setup_ops), NULL)
+#define devm_iio_kfifo_buffer_setup(dev, indio_dev, setup_ops)	\
+	devm_iio_kfifo_buffer_setup_ext((dev), (indio_dev), (setup_ops), NULL)
 
 #endif