Merge tag 'iio-for-5.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of new device support, cleanups and features for IIO in the 5.8 cycle

Usual mixed back but with a few subsystem wide or device type
wide cleanups.

New device support

* adis16475
- New driver supporting adis16470, adis16475, adis16477, adis16465,
adis16467, adis16500, adis16505 and adis16507.
Includes some rework of the adis library to simplify using it
for this new driver.
* ak8974
- Add support for Alps hscdt008a. ID only. Related patches add support
for scale.
* atlas-sensor
- Add support for RTD-SM OEM temperature sensor.
* cm32181
- Add support for CM3218 including support for SMBUS alert via
ACPI resources.
* ltc2632
- Add support for ltc2634-12/10/8 DACS including handling per
device type numbers of channels.

Major Features

* cm32181
- ACPI bindings including parsing CPM0 and CPM1 custom ACPI tables.
Includes minor tidy ups and fixes.
* vcnl4000
- Add event support
- Add buffered data capture support
- Add control of sampling frequency

Cleanups and minor fixes.

* core
- Trivial rework of iio_device_alloc to use an early return and
improve readability.
- Precursors to addition of multiple buffer support. So far
minor refactoring.
* subsystem wide
- Use get_unaligned_be24 slightly improve readability over open
coding it.
* adis drivers
- Use iio_get_debugfs_dentry access function.
* bh1780, cm32181, cm3232, gp2ap02a00f, opt3001, st_uvis25, vl6180,
dmard06, kxsd9
- Drop use of of_match_ptr to allow ACPI based probing via PRP0001.
Part of clear out of this to avoid cut and paste into new drivers.
* ad5592r, ad5593r
- Fix typos
* ad5933
- Use managed interfaces to automate error handling and remove.
* ak8974
- Fix wrong number of 'real bits' for buffered data.
- Refactor to pull measurement code out as separate function.
bmp280
- Fix lack of clamp on range during data capture.
* at91-sama5d2_adc
- Handle unfinished conversions correctly.
- Allow use of triggers other than it's own.
- Reorganize buffer setup and tear down as part of long running
subsystem wide rework.
* ccs811
- Add DT binding docs and match table.
- Support external reset and wakeup pins.
* hid-sensors
- Reorganize buffer setup and tear down as part of long running
subsystem wide rework.
* ltr501
- Constify some structs.
* vcnl4000
- Fix an endian issue by using explicit byte swapped i2c accessors.

* tag 'iio-for-5.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (74 commits)
iio: light: ltr501: Constify structs
staging: iio: ad5933: attach life-cycle of kfifo buffer to parent device and use managed calls throughout
iio: bmp280: fix compensation of humidity
iio: light: cm32181: Fix integartion time typo
iio: light: cm32181: Add support for parsing CPM0 and CPM1 ACPI tables
iio: light: cm32181: Make lux_per_bit and lux_per_bit_base_it runtime settings
iio: light: cm32181: Use units of 1/100000th for calibscale and lux_per_bit
iio: light: cm32181: Change reg_init to use a bitmap of which registers to init
iio: light: cm32181: Handle CM3218 ACPI devices with 2 I2C resources
iio: light: cm32181: Clean up the probe function a bit
iio: light: cm32181: Add support for the CM3218
iio: light: cm32181: Add some extra register defines
iio: light: cm32181: Add support for ACPI enumeration
iio: light: cm32181: Switch to new style i2c-driver probe function
iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger
iio: vcnl4000: Add buffer support for VCNL4010/20.
iio: vcnl4000: Add sampling frequency support for VCNL4010/20.
iio: vcnl4000: Add event support for VCNL4010/20.
iio: vcnl4000: Factorize data reading and writing.
iio: vcnl4000: Fix i2c swapped word reading.
...

Documentation/devicetree/bindings/iio/chemical/ams,ccs811.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/chemical/ams,ccs811.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AMS CCS811 VOC Sensor
+
+maintainers:
+  - Narcisa Vasile <[e-mail]>
+
+description: |
+  Ultra-Low Power Digital Gas Sensor for Monitoring Indoor Air Quality.
+
+properties:
+  compatible:
+    enum:
+      - ams,ccs811
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    description: GPIO connected to the nRESET line. This is an active low
+                 input to CCS811.
+    maxItems: 1
+
+  wakeup-gpios:
+    description: GPIO connected to the nWAKE line. This is an active low
+                 input to CCS811.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      voc@5b {
+        compatible = "ams,ccs811";
+        reg = <0x5b>;
+        reset-gpios = <&gpioa 11 GPIO_ACTIVE_LOW>;
+        wakeup-gpios = <&gpioa 12 GPIO_ACTIVE_LOW>;
+      };
+    };
+
+...

Documentation/devicetree/bindings/iio/chemical/atlas,sensor.yaml

···
     http://www.atlas-scientific.com/_files/_datasheets/_oem/EC_oem_datasheet.pdf
     http://www.atlas-scientific.com/_files/_datasheets/_oem/ORP_oem_datasheet.pdf
     http://www.atlas-scientific.com/_files/_datasheets/_oem/pH_oem_datasheet.pdf
+    http://www.atlas-scientific.com/_files/_datasheets/_oem/RTD_oem_datasheet.pdf
 
 properties:
   compatible:
···
       - atlas,ec-sm
       - atlas,orp-sm
       - atlas,ph-sm
+      - atlas,rtd-sm
 
   reg:
      maxItems: 1

Documentation/devicetree/bindings/iio/dac/ltc2632.txt

···
-Linear Technology LTC2632/2636 DAC
+Linear Technology LTC2632/2634/2636 DAC
 
 Required properties:
  - compatible: Has to contain one of the following:
···
 	lltc,ltc2632-h12
 	lltc,ltc2632-h10
 	lltc,ltc2632-h8
+	lltc,ltc2634-l12
+	lltc,ltc2634-l10
+	lltc,ltc2634-l8
+	lltc,ltc2634-h12
+	lltc,ltc2634-h10
+	lltc,ltc2634-h8
 	lltc,ltc2636-l12
 	lltc,ltc2636-l10
 	lltc,ltc2636-l8

Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/imu/adi,adis16475.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADIS16475 and similar IMUs
+
+maintainers:
+  - Nuno Sá <[e-mail]>
+
+description: |
+  Analog Devices ADIS16475 and similar IMUs
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ADIS16475.pdf
+
+properties:
+  compatible:
+    enum:
+      - adi,adis16475-1
+      - adi,adis16475-2
+      - adi,adis16475-3
+      - adi,adis16477-1
+      - adi,adis16477-2
+      - adi,adis16477-3
+      - adi,adis16470
+      - adi,adis16465-1
+      - adi,adis16465-2
+      - adi,adis16465-3
+      - adi,adis16467-1
+      - adi,adis16467-2
+      - adi,adis16467-3
+      - adi,adis16500
+      - adi,adis16505-1
+      - adi,adis16505-2
+      - adi,adis16505-3
+      - adi,adis16507-1
+      - adi,adis16507-2
+      - adi,adis16507-3
+
+  reg:
+    maxItems: 1
+
+  spi-cpha: true
+
+  spi-cpol: true
+
+  spi-max-frequency:
+    maximum: 2000000
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  reset-gpios:
+    description:
+      Must be the device tree identifier of the RESET pin. If specified,
+      it will be asserted during driver probe. As the line is active low,
+      it should be marked GPIO_ACTIVE_LOW.
+    maxItems: 1
+
+  adi,sync-mode:
+    description:
+      Configures the device SYNC pin. The following modes are supported
+      0 - output_sync
+      1 - direct_sync
+      2 - scaled_sync
+      3 - pulse_sync
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 3
+
+  adi,scaled-output-hz:
+    description:
+      This property must be present if the clock mode is scaled-sync through
+      clock-names property. In this mode, the input clock can have a range
+      of 1Hz to 128HZ which must be scaled to originate an allowable sample
+      rate. This property specifies that rate.
+    minimum: 1900
+    maximum: 2100
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - spi-cpha
+  - spi-cpol
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - adi,adis16500
+              - adi,adis16505-1
+              - adi,adis16505-2
+              - adi,adis16505-3
+              - adi,adis16507-1
+              - adi,adis16507-2
+              - adi,adis16507-3
+
+    then:
+      properties:
+        adi,sync-mode:
+          minimum: 0
+          maximum: 2
+
+  - if:
+      properties:
+        adi,sync-mode:
+          enum: [1, 2, 3]
+
+    then:
+      dependencies:
+        adi,sync-mode: [ clocks ]
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            adis16475: adis16475-3@0 {
+                    compatible = "adi,adis16475-3";
+                    reg = <0>;
+                    spi-cpha;
+                    spi-cpol;
+                    spi-max-frequency = <2000000>;
+                    interrupts = <4 IRQ_TYPE_EDGE_RISING>;
+                    interrupt-parent = <&gpio>;
+            };
+    };
+...

Documentation/devicetree/bindings/iio/magnetometer/ak8974.txt

···
 
 Required properties:
 
-- compatible : should be "asahi-kasei,ak8974"
+- compatible:
+    * "asahi-kasei,ak8974"
+    * "alps,hscdtd008a"
 - reg : the I2C address of the magnetometer
 
 Optional properties:

MAINTAINERS

···
 F:	Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml
 F:	drivers/iio/imu/adis16460.c
 
+ANALOG DEVICES INC ADIS16475 DRIVER
+M:	Nuno Sa <[e-mail]>
+L:	[e-mail]
+W:	http://ez.analog.com/community/linux-device-drivers
+S:	Supported
+F:	drivers/iio/imu/adis16475.c
+F:	Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
+
 ANALOG DEVICES INC ADM1177 DRIVER
 M:	Beniamin Bia <[e-mail]>
 M:	Michael Hennerich <[e-mail]>

drivers/iio/accel/dmard06.c

···
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 
···
 	.id_table = dmard06_id,
 	.driver = {
 		.name = DMARD06_DRV_NAME,
-		.of_match_table = of_match_ptr(dmard06_of_match),
+		.of_match_table = dmard06_of_match,
 		.pm = DMARD06_PM_OPS,
 	},
 };

drivers/iio/accel/hid-sensor-accel-3d.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum accel_3d_channel {
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&accel_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&accel_state->common_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		goto error_free_dev_mem;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&accel_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &accel_state->common_attributes);
 error_free_dev_mem:
 	kfree(indio_dev->channels);
 	return ret;
···
 
 	sensor_hub_remove_callback(hsdev, hsdev->usage);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&accel_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &accel_state->common_attributes);
 	kfree(indio_dev->channels);
 
 	return 0;

drivers/iio/accel/kxsd9-i2c.c

···
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
···
 	return kxsd9_common_remove(&client->dev);
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id kxsd9_of_match[] = {
 	{ .compatible = "kionix,kxsd9", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, kxsd9_of_match);
-#else
-#define kxsd9_of_match NULL
-#endif
 
 static const struct i2c_device_id kxsd9_i2c_id[] = {
 	{"kxsd9", 0},
···
 static struct i2c_driver kxsd9_i2c_driver = {
 	.driver = {
 		.name	= "kxsd9",
-		.of_match_table = of_match_ptr(kxsd9_of_match),
+		.of_match_table = kxsd9_of_match,
 		.pm = &kxsd9_dev_pm_ops,
 	},
 	.probe		= kxsd9_i2c_probe,

drivers/iio/adc/ad7476.c

···
 	indio_dev->num_channels = 2;
 	indio_dev->info = &ad7476_info;
 
-	if (st->convst_gpio && st->chip_info->convst_channel)
+	if (st->convst_gpio)
 		indio_dev->channels = st->chip_info->convst_channel;
 	/* Setup default message */
 

drivers/iio/adc/ad_sigma_delta.c

···
 
 	switch (size) {
 	case 3:
-		data[1] = val >> 16;
-		data[2] = val >> 8;
-		data[3] = val;
+		put_unaligned_be24(val, &data[1]);
 		break;
 	case 2:
 		put_unaligned_be16(val, &data[1]);
···
 		*val = get_unaligned_be32(sigma_delta->data);
 		break;
 	case 3:
-		*val = (sigma_delta->data[0] << 16) |
-			(sigma_delta->data[1] << 8) |
-			sigma_delta->data[2];
+		*val = get_unaligned_be24(&sigma_delta->data[0]);
 		break;
 	case 2:
 		*val = get_unaligned_be16(sigma_delta->data);

drivers/iio/adc/at91-sama5d2_adc.c

···
 
 #include <linux/bitops.h>
 #include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/interrupt.h>
···
 #define AT91_SAMA5D2_IER_YRDY   BIT(21)
 /* Interrupt Enable Register - TS pressure measurement ready */
 #define AT91_SAMA5D2_IER_PRDY   BIT(22)
+/* Interrupt Enable Register - Data ready */
+#define AT91_SAMA5D2_IER_DRDY   BIT(24)
 /* Interrupt Enable Register - general overrun error */
 #define AT91_SAMA5D2_IER_GOVRE BIT(25)
 /* Interrupt Enable Register - Pen detect */
···
 	return at91_adc_chan_xlate(indio_dev, iiospec->args[0]);
 }
 
+static unsigned int at91_adc_active_scan_mask_to_reg(struct iio_dev *indio_dev)
+{
+	u32 mask = 0;
+	u8 bit;
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->num_channels) {
+		struct iio_chan_spec const *chan =
+			 at91_adc_chan_get(indio_dev, bit);
+		mask |= BIT(chan->channel);
+	}
+
+	return mask & GENMASK(11, 0);
+}
+
 static void at91_adc_config_emr(struct at91_adc_state *st)
 {
 	/* configure the extended mode register */
···
 	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
 	struct at91_adc_state *st = iio_priv(indio);
 	u32 status = at91_adc_readl(st, AT91_SAMA5D2_TRGR);
-	u8 bit;
 
 	/* clear TRGMOD */
 	status &= ~AT91_SAMA5D2_TRGR_TRGMOD_MASK;
···
 
 	/* set/unset hw trigger */
 	at91_adc_writel(st, AT91_SAMA5D2_TRGR, status);
-
-	for_each_set_bit(bit, indio->active_scan_mask, indio->num_channels) {
-		struct iio_chan_spec const *chan = at91_adc_chan_get(indio, bit);
-		u32 cor;
-
-		if (!chan)
-			continue;
-		/* these channel types cannot be handled by this trigger */
-		if (chan->type == IIO_POSITIONRELATIVE ||
-		    chan->type == IIO_PRESSURE)
-			continue;
-
-		if (state) {
-			cor = at91_adc_readl(st, AT91_SAMA5D2_COR);
-
-			if (chan->differential)
-				cor |= (BIT(chan->channel) |
-					BIT(chan->channel2)) <<
-					AT91_SAMA5D2_COR_DIFF_OFFSET;
-			else
-				cor &= ~(BIT(chan->channel) <<
-				       AT91_SAMA5D2_COR_DIFF_OFFSET);
-
-			at91_adc_writel(st, AT91_SAMA5D2_COR, cor);
-		}
-
-		if (state) {
-			at91_adc_writel(st, AT91_SAMA5D2_CHER,
-					BIT(chan->channel));
-			/* enable irq only if not using DMA */
-			if (!st->dma_st.dma_chan) {
-				at91_adc_writel(st, AT91_SAMA5D2_IER,
-						BIT(chan->channel));
-			}
-		} else {
-			/* disable irq only if not using DMA */
-			if (!st->dma_st.dma_chan) {
-				at91_adc_writel(st, AT91_SAMA5D2_IDR,
-						BIT(chan->channel));
-			}
-			at91_adc_writel(st, AT91_SAMA5D2_CHDR,
-					BIT(chan->channel));
-		}
-	}
 
 	return 0;
 }
···
 
 	/* Needed to ACK the DRDY interruption */
 	at91_adc_readl(st, AT91_SAMA5D2_LCDR);
+
 	return 0;
 }
 
···
 	return 0;
 }
 
-static int at91_adc_buffer_postenable(struct iio_dev *indio_dev)
+static bool at91_adc_buffer_check_use_irq(struct iio_dev *indio,
+					  struct at91_adc_state *st)
+{
+	/* if using DMA, we do not use our own IRQ (we use DMA-controller) */
+	if (st->dma_st.dma_chan)
+		return false;
+	/* if the trigger is not ours, then it has its own IRQ */
+	if (iio_trigger_validate_own_device(indio->trig, indio))
+		return false;
+	return true;
+}
+
+static bool at91_adc_current_chan_is_touch(struct iio_dev *indio_dev)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	return !!bitmap_subset(indio_dev->active_scan_mask,
+			       &st->touch_st.channels_bitmask,
+			       AT91_SAMA5D2_MAX_CHAN_IDX + 1);
+}
+
+static int at91_adc_buffer_preenable(struct iio_dev *indio_dev)
 {
 	int ret;
+	u8 bit;
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
 	/* check if we are enabling triggered buffer or the touchscreen */
-	if (bitmap_subset(indio_dev->active_scan_mask,
-			  &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1)) {
-		/* touchscreen enabling */
+	if (at91_adc_current_chan_is_touch(indio_dev))
 		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))
 		return -EINVAL;
···
 		return ret;
 	}
 
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->num_channels) {
+		struct iio_chan_spec const *chan =
+					at91_adc_chan_get(indio_dev, bit);
+		u32 cor;
+
+		if (!chan)
+			continue;
+		/* these channel types cannot be handled by this trigger */
+		if (chan->type == IIO_POSITIONRELATIVE ||
+		    chan->type == IIO_PRESSURE)
+			continue;
+
+		cor = at91_adc_readl(st, AT91_SAMA5D2_COR);
+
+		if (chan->differential)
+			cor |= (BIT(chan->channel) | BIT(chan->channel2)) <<
+				AT91_SAMA5D2_COR_DIFF_OFFSET;
+		else
+			cor &= ~(BIT(chan->channel) <<
+			       AT91_SAMA5D2_COR_DIFF_OFFSET);
+
+		at91_adc_writel(st, AT91_SAMA5D2_COR, cor);
+
+		at91_adc_writel(st, AT91_SAMA5D2_CHER, BIT(chan->channel));
+	}
+
+	if (at91_adc_buffer_check_use_irq(indio_dev, st))
+		at91_adc_writel(st, AT91_SAMA5D2_IER, AT91_SAMA5D2_IER_DRDY);
+
+	return 0;
+}
+
+static int at91_adc_buffer_postenable(struct iio_dev *indio_dev)
+{
+	if (at91_adc_current_chan_is_touch(indio_dev))
+		return 0;
+
 	return iio_triggered_buffer_postenable(indio_dev);
 }
 
-static int at91_adc_buffer_predisable(struct iio_dev *indio_dev)
+static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
-	int ret;
 	u8 bit;
 
 	/* check if we are disabling triggered buffer or the touchscreen */
-	if (bitmap_subset(indio_dev->active_scan_mask,
-			  &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1)) {
-		/* touchscreen disable */
+	if (at91_adc_current_chan_is_touch(indio_dev))
 		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))
 		return -EINVAL;
 
-	/* continue with the triggered buffer */
-	ret = iio_triggered_buffer_predisable(indio_dev);
-	if (ret < 0)
-		dev_err(&indio_dev->dev, "buffer predisable failed\n");
-
-	if (!st->dma_st.dma_chan)
-		return ret;
-
-	/* if we are using DMA we must clear registers and end DMA */
-	dmaengine_terminate_sync(st->dma_st.dma_chan);
-
 	/*
-	 * For each enabled channel we must read the last converted value
+	 * For each enable channel we must disable it in hardware.
+	 * In the case of DMA, we must read the last converted value
 	 * to clear EOC status and not get a possible interrupt later.
-	 * This value is being read by DMA from LCDR anyway
+	 * This value is being read by DMA from LCDR anyway, so it's not lost.
 	 */
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
 			 indio_dev->num_channels) {
···
 		if (chan->type == IIO_POSITIONRELATIVE ||
 		    chan->type == IIO_PRESSURE)
 			continue;
+
+		at91_adc_writel(st, AT91_SAMA5D2_CHDR, BIT(chan->channel));
+
 		if (st->dma_st.dma_chan)
 			at91_adc_readl(st, chan->address);
 	}
 
+	if (at91_adc_buffer_check_use_irq(indio_dev, st))
+		at91_adc_writel(st, AT91_SAMA5D2_IDR, AT91_SAMA5D2_IER_DRDY);
+
 	/* read overflow register to clear possible overflow status */
 	at91_adc_readl(st, AT91_SAMA5D2_OVER);
-	return ret;
+
+	/* if we are using DMA we must clear registers and end DMA */
+	if (st->dma_st.dma_chan)
+		dmaengine_terminate_sync(st->dma_st.dma_chan);
+
+	return 0;
+}
+
+static int at91_adc_buffer_predisable(struct iio_dev *indio_dev)
+{
+	if (at91_adc_current_chan_is_touch(indio_dev))
+		return 0;
+
+	return iio_triggered_buffer_predisable(indio_dev);
 }
 
 static const struct iio_buffer_setup_ops at91_buffer_setup_ops = {
+	.preenable = &at91_adc_buffer_preenable,
+	.postdisable = &at91_adc_buffer_postdisable,
 	.postenable = &at91_adc_buffer_postenable,
 	.predisable = &at91_adc_buffer_predisable,
 };
···
 	int i = 0;
 	int val;
 	u8 bit;
+	u32 mask = at91_adc_active_scan_mask_to_reg(indio_dev);
+	unsigned int timeout = 50;
+
+	/*
+	 * Check if the conversion is ready. If not, wait a little bit, and
+	 * in case of timeout exit with an error.
+	 */
+	while ((at91_adc_readl(st, AT91_SAMA5D2_ISR) & mask) != mask &&
+	       timeout) {
+		usleep_range(50, 100);
+		timeout--;
+	}
+
+	/* Cannot read data, not ready. Continue without reporting data */
+	if (!timeout)
+		return;
 
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
 			 indio_dev->num_channels) {
···
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
+	/*
+	 * If it's not our trigger, start a conversion now, as we are
+	 * actually polling the trigger now.
+	 */
+	if (iio_trigger_validate_own_device(indio_dev->trig, indio_dev))
+		at91_adc_writel(st, AT91_SAMA5D2_CR, AT91_SAMA5D2_CR_START);
+
 	if (st->dma_st.dma_chan)
 		at91_adc_trigger_handler_dma(indio_dev);
 	else
···
 
 static int at91_adc_buffer_init(struct iio_dev *indio)
 {
-	struct at91_adc_state *st = iio_priv(indio);
-
-	if (st->selected_trig->hw_trig) {
-		return devm_iio_triggered_buffer_setup(&indio->dev, indio,
-			&iio_pollfunc_store_time,
-			&at91_adc_trigger_handler, &at91_buffer_setup_ops);
-	}
-	/*
-	 * we need to prepare the buffer ops in case we will get
-	 * another buffer attached (like a callback buffer for the touchscreen)
-	 */
-	indio->setup_ops = &at91_buffer_setup_ops;
-
-	return 0;
+	return devm_iio_triggered_buffer_setup(&indio->dev, indio,
+		&iio_pollfunc_store_time,
+		&at91_adc_trigger_handler, &at91_buffer_setup_ops);
 }
 
 static unsigned at91_adc_startup_time(unsigned startup_time_min,
···
 		status = at91_adc_readl(st, AT91_SAMA5D2_XPOSR);
 		status = at91_adc_readl(st, AT91_SAMA5D2_YPOSR);
 		status = at91_adc_readl(st, AT91_SAMA5D2_PRESSR);
-	} else if (iio_buffer_enabled(indio) && !st->dma_st.dma_chan) {
+	} else if (iio_buffer_enabled(indio) &&
+		   (status & AT91_SAMA5D2_IER_DRDY)) {
 		/* triggered buffer without DMA */
 		disable_irq_nosync(irq);
 		iio_trigger_poll(indio->trig);
···
 		return 0;
 
 	/* check if we are enabling triggered buffer or the touchscreen */
-	if (bitmap_subset(indio_dev->active_scan_mask,
-			  &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1)) {
-		/* touchscreen enabling */
+	if (at91_adc_current_chan_is_touch(indio_dev))
 		return at91_adc_configure_touch(st, true);
-	} else {
+	else
 		return at91_adc_configure_trigger(st->trig, true);
-	}
 
 	/* not needed but more explicit */
 	return 0;

drivers/iio/adc/mcp3422.c

···
 #include <linux/delay.h>
 #include <linux/sysfs.h>
 #include <linux/of.h>
+#include <asm/unaligned.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
 
 	if (sample_rate == MCP3422_SRATE_3) {
 		ret = i2c_master_recv(adc->i2c, buf, 4);
-		temp = buf[0] << 16 | buf[1] << 8 | buf[2];
+		temp = get_unaligned_be24(&buf[0]);
 		*config = buf[3];
 	} else {
 		ret = i2c_master_recv(adc->i2c, buf, 3);
-		temp = buf[0] << 8 | buf[1];
+		temp = get_unaligned_be16(&buf[0]);
 		*config = buf[2];
 	}
 

drivers/iio/adc/ti-ads124s08.c

···
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 /* Commands */
 #define ADS124S08_CMD_NOP	0x00
 #define ADS124S08_CMD_WAKEUP	0x02
···
 {
 	struct ads124s_private *priv = iio_priv(indio_dev);
 	int ret;
-	u32 tmp;
 	struct spi_transfer t[] = {
 		{
 			.tx_buf = &priv->data[0],
···
 	if (ret < 0)
 		return ret;
 
-	tmp = priv->data[2] << 16 | priv->data[3] << 8 | priv->data[4];
-
-	return tmp;
+	return get_unaligned_be24(&priv->data[2]);
 }
 
 static int ads124s_read_raw(struct iio_dev *indio_dev,

drivers/iio/chemical/atlas-sensor.c

···
 #define ATLAS_REG_DO_CALIB_STATUS_PRESSURE	BIT(0)
 #define ATLAS_REG_DO_CALIB_STATUS_DO		BIT(1)
 
+#define ATLAS_REG_RTD_DATA		0x0e
+
 #define ATLAS_REG_PH_TEMP_DATA		0x0e
 #define ATLAS_REG_PH_DATA		0x16
 
···
 #define ATLAS_EC_INT_TIME_IN_MS		650
 #define ATLAS_ORP_INT_TIME_IN_MS	450
 #define ATLAS_DO_INT_TIME_IN_MS		450
+#define ATLAS_RTD_INT_TIME_IN_MS	450
 
 enum {
 	ATLAS_PH_SM,
 	ATLAS_EC_SM,
 	ATLAS_ORP_SM,
 	ATLAS_DO_SM,
+	ATLAS_RTD_SM,
 };
 
 struct atlas_data {
···
 		.output = 1,
 		.scan_index = -1
 	},
+};
+
+static const struct iio_chan_spec atlas_rtd_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.address = ATLAS_REG_RTD_DATA,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 32,
+			.storagebits = 32,
+			.endianness = IIO_BE,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1),
 };
 
 static int atlas_check_ph_calibration(struct atlas_data *data)
···
 				.calibration = &atlas_check_do_calibration,
 				.delay = ATLAS_DO_INT_TIME_IN_MS,
 	},
+	[ATLAS_RTD_SM] = {
+				.channels = atlas_rtd_channels,
+				.num_channels = 2,
+				.data_reg = ATLAS_REG_RTD_DATA,
+				.delay = ATLAS_RTD_INT_TIME_IN_MS,
+	},
 };
 
 static int atlas_set_powermode(struct atlas_data *data, int on)
···
 	struct atlas_data *data = iio_priv(indio_dev);
 
 	switch (mask) {
+	case IIO_CHAN_INFO_PROCESSED:
 	case IIO_CHAN_INFO_RAW: {
 		int ret;
 		__be32 reg;
···
 	{ "atlas-ec-sm", ATLAS_EC_SM},
 	{ "atlas-orp-sm", ATLAS_ORP_SM},
 	{ "atlas-do-sm", ATLAS_DO_SM},
+	{ "atlas-rtd-sm", ATLAS_RTD_SM},
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, atlas_id);
···
 	{ .compatible = "atlas,ec-sm", .data = (void *)ATLAS_EC_SM, },
 	{ .compatible = "atlas,orp-sm", .data = (void *)ATLAS_ORP_SM, },
 	{ .compatible = "atlas,do-sm", .data = (void *)ATLAS_DO_SM, },
+	{ .compatible = "atlas,rtd-sm", .data = (void *)ATLAS_RTD_SM, },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, atlas_dt_ids);

drivers/iio/chemical/ccs811.c

···
  */
 
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
···
 #define CCS811_ERR		0xE0
 /* Used to transition from boot to application mode */
 #define CCS811_APP_START	0xF4
+#define CCS811_SW_RESET		0xFF
 
 /* Status register flags */
 #define CCS811_STATUS_ERROR		BIT(0)
···
 	struct mutex lock; /* Protect readings */
 	struct ccs811_reading buffer;
 	struct iio_trigger *drdy_trig;
+	struct gpio_desc *wakeup_gpio;
 	bool drdy_trig_on;
 };
 
···
 					 CCS811_MODE_IAQ_1SEC);
 }
 
+static void ccs811_set_wakeup(struct ccs811_data *data, bool enable)
+{
+	if (!data->wakeup_gpio)
+		return;
+
+	gpiod_set_value(data->wakeup_gpio, enable);
+
+	if (enable)
+		usleep_range(50, 60);
+	else
+		usleep_range(20, 30);
+}
+
 static int ccs811_get_measurement(struct ccs811_data *data)
 {
 	int ret, tries = 11;
+
+	ccs811_set_wakeup(data, true);
 
 	/* Maximum waiting time: 1s, as measurements are made every second */
 	while (tries-- > 0) {
···
 	if (!(ret & CCS811_STATUS_DATA_READY))
 		return -EIO;
 
-	return i2c_smbus_read_i2c_block_data(data->client,
+	ret = i2c_smbus_read_i2c_block_data(data->client,
 					    CCS811_ALG_RESULT_DATA, 8,
 					    (char *)&data->buffer);
+	ccs811_set_wakeup(data, false);
+
+	return ret;
 }
 
 static int ccs811_read_raw(struct iio_dev *indio_dev,
···
 	return IRQ_HANDLED;
 }
 
+static int ccs811_reset(struct i2c_client *client)
+{
+	struct gpio_desc *reset_gpio;
+	int ret;
+
+	reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+					     GPIOD_OUT_LOW);
+	if (IS_ERR(reset_gpio))
+		return PTR_ERR(reset_gpio);
+
+	/* Try to reset using nRESET pin if available else do SW reset */
+	if (reset_gpio) {
+		gpiod_set_value(reset_gpio, 1);
+		usleep_range(20, 30);
+		gpiod_set_value(reset_gpio, 0);
+	} else {
+		/*
+		 * As per the datasheet, this sequence of values needs to be
+		 * written to the SW_RESET register for triggering the soft
+		 * reset in the device and placing it in boot mode.
+		 */
+		static const u8 reset_seq[] = {
+			0x11, 0xE5, 0x72, 0x8A,
+		};
+
+		ret = i2c_smbus_write_i2c_block_data(client, CCS811_SW_RESET,
+					     sizeof(reset_seq), reset_seq);
+		if (ret < 0) {
+			dev_err(&client->dev, "Failed to reset sensor\n");
+			return ret;
+		}
+	}
+
+	/* tSTART delay required after reset */
+	usleep_range(1000, 2000);
+
+	return 0;
+}
+
 static int ccs811_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
···
 				     | I2C_FUNC_SMBUS_READ_I2C_BLOCK))
 		return -EOPNOTSUPP;
 
-	/* Check hardware id (should be 0x81 for this family of devices) */
-	ret = i2c_smbus_read_byte_data(client, CCS811_HW_ID);
-	if (ret < 0)
-		return ret;
-
-	if (ret != CCS811_HW_ID_VALUE) {
-		dev_err(&client->dev, "hardware id doesn't match CCS81x\n");
-		return -ENODEV;
-	}
-
-	ret = i2c_smbus_read_byte_data(client, CCS811_HW_VERSION);
-	if (ret < 0)
-		return ret;
-
-	if ((ret & CCS811_HW_VERSION_MASK) != CCS811_HW_VERSION_VALUE) {
-		dev_err(&client->dev, "no CCS811 sensor\n");
-		return -ENODEV;
-	}
-
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = ccs811_setup(client);
-	if (ret < 0)
-		return ret;
-
 	data = iio_priv(indio_dev);
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
+
+	data->wakeup_gpio = devm_gpiod_get_optional(&client->dev, "wakeup",
+						    GPIOD_OUT_HIGH);
+	if (IS_ERR(data->wakeup_gpio))
+		return PTR_ERR(data->wakeup_gpio);
+
+	ccs811_set_wakeup(data, true);
+
+	ret = ccs811_reset(client);
+	if (ret) {
+		ccs811_set_wakeup(data, false);
+		return ret;
+	}
+
+	/* Check hardware id (should be 0x81 for this family of devices) */
+	ret = i2c_smbus_read_byte_data(client, CCS811_HW_ID);
+	if (ret < 0) {
+		ccs811_set_wakeup(data, false);
+		return ret;
+	}
+
+	if (ret != CCS811_HW_ID_VALUE) {
+		dev_err(&client->dev, "hardware id doesn't match CCS81x\n");
+		ccs811_set_wakeup(data, false);
+		return -ENODEV;
+	}
+
+	ret = i2c_smbus_read_byte_data(client, CCS811_HW_VERSION);
+	if (ret < 0) {
+		ccs811_set_wakeup(data, false);
+		return ret;
+	}
+
+	if ((ret & CCS811_HW_VERSION_MASK) != CCS811_HW_VERSION_VALUE) {
+		dev_err(&client->dev, "no CCS811 sensor\n");
+		ccs811_set_wakeup(data, false);
+		return -ENODEV;
+	}
+
+	ret = ccs811_setup(client);
+	if (ret < 0) {
+		ccs811_set_wakeup(data, false);
+		return ret;
+	}
+
+	ccs811_set_wakeup(data, false);
 
 	mutex_init(&data->lock);
 
···
 };
 MODULE_DEVICE_TABLE(i2c, ccs811_id);
 
+static const struct of_device_id ccs811_dt_ids[] = {
+	{ .compatible = "ams,ccs811" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ccs811_dt_ids);
+
 static struct i2c_driver ccs811_driver = {
 	.driver = {
 		.name = "ccs811",
+		.of_match_table = ccs811_dt_ids,
 	},
 	.probe = ccs811_probe,
 	.remove = ccs811_remove,

drivers/iio/common/hid-sensors/hid-sensor-trigger.c

···
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/sysfs.h>
 #include "hid-sensor-trigger.h"
···
 	return hid_sensor_power_state(iio_trigger_get_drvdata(trig), state);
 }
 
-void hid_sensor_remove_trigger(struct hid_sensor_common *attrb)
+void hid_sensor_remove_trigger(struct iio_dev *indio_dev,
+			       struct hid_sensor_common *attrb)
 {
 	if (atomic_read(&attrb->runtime_pm_enable))
 		pm_runtime_disable(&attrb->pdev->dev);
···
 	cancel_work_sync(&attrb->work);
 	iio_trigger_unregister(attrb->trigger);
 	iio_trigger_free(attrb->trigger);
+	iio_triggered_buffer_cleanup(indio_dev);
 }
 EXPORT_SYMBOL(hid_sensor_remove_trigger);
 
···
 	int ret;
 	struct iio_trigger *trig;
 
+	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+					 NULL, NULL);
+	if (ret) {
+		dev_err(&indio_dev->dev, "Triggered Buffer Setup Failed\n");
+		return ret;
+	}
+
 	trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id);
 	if (trig == NULL) {
 		dev_err(&indio_dev->dev, "Trigger Allocate Failed\n");
 		ret = -ENOMEM;
-		goto error_ret;
+		goto error_triggered_buffer_cleanup;
 	}
 
 	trig->dev.parent = indio_dev->dev.parent;
···
 	iio_trigger_unregister(trig);
 error_free_trig:
 	iio_trigger_free(trig);
-error_ret:
+error_triggered_buffer_cleanup:
+	iio_triggered_buffer_cleanup(indio_dev);
 	return ret;
 }
 EXPORT_SYMBOL(hid_sensor_setup_trigger);

drivers/iio/common/hid-sensors/hid-sensor-trigger.h

···
 
 int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
 				struct hid_sensor_common *attrb);
-void hid_sensor_remove_trigger(struct hid_sensor_common *attrb);
+void hid_sensor_remove_trigger(struct iio_dev *indio_dev,
+			       struct hid_sensor_common *attrb);
 int hid_sensor_power_state(struct hid_sensor_common *st, bool state);
 
 #endif

drivers/iio/common/st_sensors/st_sensors_core.c

···
 
 #include "st_sensors_core.h"
 
-static inline u32 st_sensors_get_unaligned_le24(const u8 *p)
-{
-	return (s32)((p[0] | p[1] << 8 | p[2] << 16) << 8) >> 8;
-}
-
 int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,
 				    u8 reg_addr, u8 mask, u8 data)
 {
···
 	else if (byte_for_channel == 2)
 		*data = (s16)get_unaligned_le16(outdata);
 	else if (byte_for_channel == 3)
-		*data = (s32)st_sensors_get_unaligned_le24(outdata);
+		*data = (s32)sign_extend32(get_unaligned_le24(outdata), 23);
 
 st_sensors_free_memory:
 	kfree(outdata);

drivers/iio/dac/Kconfig

···
 	  module will be called ltc1660.
 
 config LTC2632
-	tristate "Linear Technology LTC2632-12/10/8 and LTC2636-12/10/8 DAC spi driver"
+	tristate "Linear Technology LTC2632-12/10/8 and similar DAC spi driver"
 	depends on SPI
 	help
 	  Say yes here to build support for Linear Technology
-	  LTC2632-12, LTC2632-10, LTC2632-8, LTC2636-12, LTC2636-10 and
-	  LTC2636-8 converters (DAC).
+	  LTC2632, LTC2634 and LTC2636 DAC resolution 12/10/8 bit
+	  low 0-2.5V and high 0-4.096V range converters.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ltc2632.

drivers/iio/dac/ad5446.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #define MODE_PWRDWN_1k		0x1
 #define MODE_PWRDWN_100k	0x2
 #define MODE_PWRDWN_TRISTATE	0x3
···
 	struct spi_device *spi = to_spi_device(st->dev);
 	uint8_t data[3];
 
-	data[0] = (val >> 16) & 0xFF;
-	data[1] = (val >> 8) & 0xFF;
-	data[2] = val & 0xFF;
+	put_unaligned_be24(val, &data[0]);
 
 	return spi_write(spi, data, sizeof(data));
 }

drivers/iio/dac/ad5592r.c

···
 	return 0;
 }
 
-static int ad5593r_gpio_read(struct ad5592r_state *st, u8 *value)
+static int ad5592r_gpio_read(struct ad5592r_state *st, u8 *value)
 {
 	int ret;
 
···
 	.read_adc = ad5592r_read_adc,
 	.reg_write = ad5592r_reg_write,
 	.reg_read = ad5592r_reg_read,
-	.gpio_read = ad5593r_gpio_read,
+	.gpio_read = ad5592r_gpio_read,
 };
 
 static int ad5592r_spi_probe(struct spi_device *spi)

drivers/iio/dac/ad5593r.c

···
 module_i2c_driver(ad5593r_driver);
 
 MODULE_AUTHOR("Paul Cercueil <[e-mail]>");
-MODULE_DESCRIPTION("Analog Devices AD5592R multi-channel converters");
+MODULE_DESCRIPTION("Analog Devices AD5593R multi-channel converters");
 MODULE_LICENSE("GPL v2");

drivers/iio/dac/ad5624r_spi.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #include "ad5624r.h"
 
 static int ad5624r_spi_write(struct spi_device *spi,
···
 	 * for the AD5664R, AD5644R, and AD5624R, respectively.
 	 */
 	data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << shift);
-	msg[0] = data >> 16;
-	msg[1] = data >> 8;
-	msg[2] = data;
+	put_unaligned_be24(data, &msg[0]);
 
-	return spi_write(spi, msg, 3);
+	return spi_write(spi, msg, sizeof(msg));
 }
 
 static int ad5624r_read_raw(struct iio_dev *indio_dev,

drivers/iio/dac/ltc2632.c

···
 #include <linux/iio/iio.h>
 #include <linux/regulator/consumer.h>
 
+#include <asm/unaligned.h>
+
 #define LTC2632_CMD_WRITE_INPUT_N               0x0
 #define LTC2632_CMD_UPDATE_DAC_N                0x1
 #define LTC2632_CMD_WRITE_INPUT_N_UPDATE_ALL    0x2
···
 /**
  * struct ltc2632_chip_info - chip specific information
  * @channels:		channel spec for the DAC
+ * @num_channels:	DAC channel count of the chip
  * @vref_mv:		internal reference voltage
  */
 struct ltc2632_chip_info {
···
 	ID_LTC2632H12,
 	ID_LTC2632H10,
 	ID_LTC2632H8,
+	ID_LTC2634L12,
+	ID_LTC2634L10,
+	ID_LTC2634L8,
+	ID_LTC2634H12,
+	ID_LTC2634H10,
+	ID_LTC2634H8,
 	ID_LTC2636L12,
 	ID_LTC2636L10,
 	ID_LTC2636L8,
···
 	 * 10-, 8-bit input code followed by 4, 6, or 8 don't care bits.
 	 */
 	data = (cmd << 20) | (addr << 16) | (val << shift);
-	msg[0] = data >> 16;
-	msg[1] = data >> 8;
-	msg[2] = data;
+	put_unaligned_be24(data, &msg[0]);
 
 	return spi_write(spi, msg, sizeof(msg));
 }
···
 		.num_channels	= 2,
 		.vref_mv	= 4096,
 	},
+	[ID_LTC2634L12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634L10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634L8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634H12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634H10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634H8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
 	[ID_LTC2636L12] = {
 		.channels	= ltc2632x12_channels,
 		.num_channels	= 8,
···
 	{ "ltc2632-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H12] },
 	{ "ltc2632-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H10] },
 	{ "ltc2632-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H8] },
+	{ "ltc2634-l12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L12] },
+	{ "ltc2634-l10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L10] },
+	{ "ltc2634-l8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L8] },
+	{ "ltc2634-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H12] },
+	{ "ltc2634-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H10] },
+	{ "ltc2634-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H8] },
 	{ "ltc2636-l12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L12] },
 	{ "ltc2636-l10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L10] },
 	{ "ltc2636-l8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L8] },
···
 	}, {
 		.compatible = "lltc,ltc2632-h8",
 		.data = &ltc2632_chip_info_tbl[ID_LTC2632H8]
+	}, {
+		.compatible = "lltc,ltc2634-l12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L12]
+	}, {
+		.compatible = "lltc,ltc2634-l10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L10]
+	}, {
+		.compatible = "lltc,ltc2634-l8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L8]
+	}, {
+		.compatible = "lltc,ltc2634-h12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H12]
+	}, {
+		.compatible = "lltc,ltc2634-h10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H10]
+	}, {
+		.compatible = "lltc,ltc2634-h8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H8]
 	}, {
 		.compatible = "lltc,ltc2636-l12",
 		.data = &ltc2632_chip_info_tbl[ID_LTC2636L12]

drivers/iio/gyro/adis16130.c

···
 
 #include <linux/iio/iio.h>
 
+#include <asm/unaligned.h>
+
 #define ADIS16130_CON         0x0
 #define ADIS16130_CON_RD      (1 << 6)
 #define ADIS16130_IOP         0x1
···
 
 	ret = spi_sync_transfer(st->us, &xfer, 1);
 	if (ret == 0)
-		*val = (st->buf[1] << 16) | (st->buf[2] << 8) | st->buf[3];
+		*val = get_unaligned_be24(&st->buf[1]);
 	mutex_unlock(&st->buf_lock);
 
 	return ret;

drivers/iio/gyro/adis16136.c

···
 static int adis16136_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16136 *adis16136 = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	debugfs_create_file_unsafe("serial_number", 0400,
-		indio_dev->debugfs_dentry, adis16136,
-		&adis16136_serial_fops);
+		d, adis16136, &adis16136_serial_fops);
 	debugfs_create_file_unsafe("product_id", 0400,
-		indio_dev->debugfs_dentry,
-		adis16136, &adis16136_product_id_fops);
+		d, adis16136, &adis16136_product_id_fops);
 	debugfs_create_file_unsafe("flash_count", 0400,
-		indio_dev->debugfs_dentry,
-		adis16136, &adis16136_flash_count_fops);
+		d, adis16136, &adis16136_flash_count_fops);
 
 	return 0;
 }

drivers/iio/gyro/hid-sensor-gyro-3d.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum gyro_3d_channel {
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&gyro_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&gyro_state->common_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		goto error_free_dev_mem;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&gyro_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes);
 error_free_dev_mem:
 	kfree(indio_dev->channels);
 	return ret;
···
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_GYRO_3D);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&gyro_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes);
 	kfree(indio_dev->channels);
 
 	return 0;

drivers/iio/health/afe4403.c

···
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 
+#include <asm/unaligned.h>
+
 #include "afe440x.h"
 
 #define AFE4403_DRIVER_NAME		"afe4403"
···
 	if (ret)
 		return ret;
 
-	ret = spi_write_then_read(afe->spi, &reg, 1, rx, 3);
+	ret = spi_write_then_read(afe->spi, &reg, 1, rx, sizeof(rx));
 	if (ret)
 		return ret;
 
-	*val = (rx[0] << 16) |
-		(rx[1] << 8) |
-		(rx[2]);
+	*val = get_unaligned_be24(&rx[0]);
 
 	/* Disable reading from the device */
 	tx[3] = AFE440X_CONTROL0_WRITE;
···
 			 indio_dev->masklength) {
 		ret = spi_write_then_read(afe->spi,
 					  &afe4403_channel_values[bit], 1,
-					  rx, 3);
+					  rx, sizeof(rx));
 		if (ret)
 			goto err;
 
-		buffer[i++] = (rx[0] << 16) |
-				(rx[1] << 8) |
-				(rx[2]);
+		buffer[i++] = get_unaligned_be24(&rx[0]);
 	}
 
 	/* Disable reading from the device */

drivers/iio/humidity/hid-sensor-humidity.c

···
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/trigger_consumer.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev,
-					&iio_pollfunc_store_time, NULL, NULL);
-	if (ret)
-		return ret;
-
 	atomic_set(&humid_st->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&humid_st->common_attributes);
 	if (ret)
···
 error_remove_callback:
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&humid_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &humid_st->common_attributes);
 	return ret;
 }
 
···
 
 	iio_device_unregister(indio_dev);
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY);
-	hid_sensor_remove_trigger(&humid_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &humid_st->common_attributes);
 
 	return 0;
 }

drivers/iio/imu/Kconfig

···
 	  To compile this driver as a module, choose M here: the module will be
 	  called adis16460.
 
+config ADIS16475
+	tristate "Analog Devices ADIS16475 and similar IMU driver"
+	depends on SPI
+	select IIO_ADIS_LIB
+	select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
+	help
+	  Say yes here to build support for Analog Devices ADIS16470, ADIS16475,
+	  ADIS16477, ADIS16465, ADIS16467, ADIS16500, ADIS16505, ADIS16507 inertial
+	  sensors.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called adis16475.
+
 config ADIS16480
 	tristate "Analog Devices ADIS16480 and similar IMU driver"
 	depends on SPI

drivers/iio/imu/Makefile

···
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_ADIS16400) += adis16400.o
 obj-$(CONFIG_ADIS16460) += adis16460.o
+obj-$(CONFIG_ADIS16475) += adis16475.o
 obj-$(CONFIG_ADIS16480) += adis16480.o
 
 adis_lib-y += adis.o

drivers/iio/imu/adis.c

···
 	return ret;
 }
 EXPORT_SYMBOL_GPL(__adis_read_reg);
+/**
+ * __adis_update_bits_base() - ADIS Update bits function - Unlocked version
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @mask: Bitmask to change
+ * @val: Value to be written
+ * @size: Size of the register to update
+ *
+ * Updates the desired bits of @reg in accordance with @mask and @val.
+ */
+int __adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask,
+			    const u32 val, u8 size)
+{
+	int ret;
+	u32 __val;
+
+	ret = __adis_read_reg(adis, reg, &__val, size);
+	if (ret)
+		return ret;
+
+	__val = (__val & ~mask) | (val & mask);
+
+	return __adis_write_reg(adis, reg, __val, size);
+}
+EXPORT_SYMBOL_GPL(__adis_update_bits_base);
 
 #ifdef CONFIG_DEBUG_FS
 

drivers/iio/imu/adis16400.c

···
 static int adis16400_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16400_state *st = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	if (st->variant->flags & ADIS16400_HAS_SERIAL_NUMBER)
 		debugfs_create_file_unsafe("serial_number", 0400,
-				indio_dev->debugfs_dentry, st,
-				&adis16400_serial_number_fops);
+				d, st, &adis16400_serial_number_fops);
 	if (st->variant->flags & ADIS16400_HAS_PROD_ID)
 		debugfs_create_file_unsafe("product_id", 0400,
-				indio_dev->debugfs_dentry, st,
-				&adis16400_product_id_fops);
+				d, st, &adis16400_product_id_fops);
 	debugfs_create_file_unsafe("flash_count", 0400,
-			indio_dev->debugfs_dentry, st,
-			&adis16400_flash_count_fops);
+			d, st, &adis16400_flash_count_fops);
 
 	return 0;
 }
···
 		indio_dev->available_scan_masks = st->avail_scan_mask;
 		st->adis.burst = &adis16400_burst;
 		if (st->variant->flags & ADIS16400_BURST_DIAG_STAT)
-			st->adis.burst->extra_len = sizeof(u16);
+			st->adis.burst_extra_len = sizeof(u16);
 	}
 
 	adis16400_data = &st->variant->adis_data;

drivers/iio/imu/adis16460.c

···
 static int adis16460_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16460 *adis16460 = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	debugfs_create_file_unsafe("serial_number", 0400,
-			indio_dev->debugfs_dentry, adis16460,
-			&adis16460_serial_number_fops);
+			d, adis16460, &adis16460_serial_number_fops);
 	debugfs_create_file_unsafe("product_id", 0400,
-			indio_dev->debugfs_dentry, adis16460,
-			&adis16460_product_id_fops);
+			d, adis16460, &adis16460_product_id_fops);
 	debugfs_create_file_unsafe("flash_count", 0400,
-			indio_dev->debugfs_dentry, adis16460,
-			&adis16460_flash_count_fops);
+			d, adis16460, &adis16460_flash_count_fops);
 
 	return 0;
 }

drivers/iio/imu/adis16475.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ADIS16475 IMU driver
+ *
+ * Copyright 2019 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/imu/adis.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+
+#define ADIS16475_REG_DIAG_STAT		0x02
+#define ADIS16475_REG_X_GYRO_L		0x04
+#define ADIS16475_REG_Y_GYRO_L		0x08
+#define ADIS16475_REG_Z_GYRO_L		0x0C
+#define ADIS16475_REG_X_ACCEL_L		0x10
+#define ADIS16475_REG_Y_ACCEL_L		0x14
+#define ADIS16475_REG_Z_ACCEL_L		0x18
+#define ADIS16475_REG_TEMP_OUT		0x1c
+#define ADIS16475_REG_X_GYRO_BIAS_L	0x40
+#define ADIS16475_REG_Y_GYRO_BIAS_L	0x44
+#define ADIS16475_REG_Z_GYRO_BIAS_L	0x48
+#define ADIS16475_REG_X_ACCEL_BIAS_L	0x4c
+#define ADIS16475_REG_Y_ACCEL_BIAS_L	0x50
+#define ADIS16475_REG_Z_ACCEL_BIAS_L	0x54
+#define ADIS16475_REG_FILT_CTRL		0x5c
+#define ADIS16475_FILT_CTRL_MASK	GENMASK(2, 0)
+#define ADIS16475_FILT_CTRL(x)		FIELD_PREP(ADIS16475_FILT_CTRL_MASK, x)
+#define ADIS16475_REG_MSG_CTRL		0x60
+#define ADIS16475_MSG_CTRL_DR_POL_MASK	BIT(0)
+#define ADIS16475_MSG_CTRL_DR_POL(x) \
+				FIELD_PREP(ADIS16475_MSG_CTRL_DR_POL_MASK, x)
+#define ADIS16475_SYNC_MODE_MASK	GENMASK(4, 2)
+#define ADIS16475_SYNC_MODE(x)		FIELD_PREP(ADIS16475_SYNC_MODE_MASK, x)
+#define ADIS16475_REG_UP_SCALE		0x62
+#define ADIS16475_REG_DEC_RATE		0x64
+#define ADIS16475_REG_GLOB_CMD		0x68
+#define ADIS16475_REG_FIRM_REV		0x6c
+#define ADIS16475_REG_FIRM_DM		0x6e
+#define ADIS16475_REG_FIRM_Y		0x70
+#define ADIS16475_REG_PROD_ID		0x72
+#define ADIS16475_REG_SERIAL_NUM	0x74
+#define ADIS16475_REG_FLASH_CNT		0x7c
+#define ADIS16500_BURST32_MASK		BIT(9)
+#define ADIS16500_BURST32(x)		FIELD_PREP(ADIS16500_BURST32_MASK, x)
+/* number of data elements in burst mode */
+#define ADIS16475_BURST32_MAX_DATA	32
+#define ADIS16475_BURST_MAX_DATA	20
+#define ADIS16475_MAX_SCAN_DATA		20
+/* spi max speed in brust mode */
+#define ADIS16475_BURST_MAX_SPEED	1000000
+#define ADIS16475_LSB_DEC_MASK		BIT(0)
+#define ADIS16475_LSB_FIR_MASK		BIT(1)
+
+enum {
+	ADIS16475_SYNC_DIRECT = 1,
+	ADIS16475_SYNC_SCALED,
+	ADIS16475_SYNC_OUTPUT,
+	ADIS16475_SYNC_PULSE = 5,
+};
+
+struct adis16475_sync {
+	u16 sync_mode;
+	u16 min_rate;
+	u16 max_rate;
+};
+
+struct adis16475_chip_info {
+	const struct iio_chan_spec *channels;
+	const struct adis16475_sync *sync;
+	const struct adis_data adis_data;
+	const char *name;
+	u32 num_channels;
+	u32 gyro_max_val;
+	u32 gyro_max_scale;
+	u32 accel_max_val;
+	u32 accel_max_scale;
+	u32 temp_scale;
+	u32 int_clk;
+	u16 max_dec;
+	u8 num_sync;
+	bool has_burst32;
+};
+
+struct adis16475 {
+	const struct adis16475_chip_info *info;
+	struct adis adis;
+	u32 clk_freq;
+	bool burst32;
+	unsigned long lsb_flag;
+	/* Alignment needed for the timestamp */
+	__be16 data[ADIS16475_MAX_SCAN_DATA] __aligned(8);
+};
+
+enum {
+	ADIS16475_SCAN_GYRO_X,
+	ADIS16475_SCAN_GYRO_Y,
+	ADIS16475_SCAN_GYRO_Z,
+	ADIS16475_SCAN_ACCEL_X,
+	ADIS16475_SCAN_ACCEL_Y,
+	ADIS16475_SCAN_ACCEL_Z,
+	ADIS16475_SCAN_TEMP,
+	ADIS16475_SCAN_DIAG_S_FLAGS,
+	ADIS16475_SCAN_CRC_FAILURE,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static ssize_t adis16475_show_firmware_revision(struct file *file,
+						char __user *userbuf,
+						size_t count, loff_t *ppos)
+{
+	struct adis16475 *st = file->private_data;
+	char buf[7];
+	size_t len;
+	u16 rev;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FIRM_REV, &rev);
+	if (ret)
+		return ret;
+
+	len = scnprintf(buf, sizeof(buf), "%x.%x\n", rev >> 8, rev & 0xff);
+
+	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16475_firmware_revision_fops = {
+	.open = simple_open,
+	.read = adis16475_show_firmware_revision,
+	.llseek = default_llseek,
+	.owner = THIS_MODULE,
+};
+
+static ssize_t adis16475_show_firmware_date(struct file *file,
+					    char __user *userbuf,
+					    size_t count, loff_t *ppos)
+{
+	struct adis16475 *st = file->private_data;
+	u16 md, year;
+	char buf[12];
+	size_t len;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FIRM_Y, &year);
+	if (ret)
+		return ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FIRM_DM, &md);
+	if (ret)
+		return ret;
+
+	len = snprintf(buf, sizeof(buf), "%.2x-%.2x-%.4x\n", md >> 8, md & 0xff,
+		       year);
+
+	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16475_firmware_date_fops = {
+	.open = simple_open,
+	.read = adis16475_show_firmware_date,
+	.llseek = default_llseek,
+	.owner = THIS_MODULE,
+};
+
+static int adis16475_show_serial_number(void *arg, u64 *val)
+{
+	struct adis16475 *st = arg;
+	u16 serial;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_SERIAL_NUM, &serial);
+	if (ret)
+		return ret;
+
+	*val = serial;
+
+	return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adis16475_serial_number_fops,
+			 adis16475_show_serial_number, NULL, "0x%.4llx\n");
+
+static int adis16475_show_product_id(void *arg, u64 *val)
+{
+	struct adis16475 *st = arg;
+	u16 prod_id;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_PROD_ID, &prod_id);
+	if (ret)
+		return ret;
+
+	*val = prod_id;
+
+	return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adis16475_product_id_fops,
+			 adis16475_show_product_id, NULL, "%llu\n");
+
+static int adis16475_show_flash_count(void *arg, u64 *val)
+{
+	struct adis16475 *st = arg;
+	u32 flash_count;
+	int ret;
+
+	ret = adis_read_reg_32(&st->adis, ADIS16475_REG_FLASH_CNT,
+			       &flash_count);
+	if (ret)
+		return ret;
+
+	*val = flash_count;
+
+	return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adis16475_flash_count_fops,
+			 adis16475_show_flash_count, NULL, "%lld\n");
+
+static void adis16475_debugfs_init(struct iio_dev *indio_dev)
+{
+	struct adis16475 *st = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
+
+	debugfs_create_file_unsafe("serial_number", 0400,
+				   d, st, &adis16475_serial_number_fops);
+	debugfs_create_file_unsafe("product_id", 0400,
+				   d, st, &adis16475_product_id_fops);
+	debugfs_create_file_unsafe("flash_count", 0400,
+				   d, st, &adis16475_flash_count_fops);
+	debugfs_create_file("firmware_revision", 0400,
+			    d, st, &adis16475_firmware_revision_fops);
+	debugfs_create_file("firmware_date", 0400, d,
+			    st, &adis16475_firmware_date_fops);
+}
+#else
+static void adis16475_debugfs_init(struct iio_dev *indio_dev)
+{
+}
+#endif
+
+static int adis16475_get_freq(struct adis16475 *st, u32 *freq)
+{
+	int ret;
+	u16 dec;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_DEC_RATE, &dec);
+	if (ret)
+		return -EINVAL;
+
+	*freq = DIV_ROUND_CLOSEST(st->clk_freq, dec + 1);
+
+	return 0;
+}
+
+static int adis16475_set_freq(struct adis16475 *st, const u32 freq)
+{
+	u16 dec;
+	int ret;
+
+	if (!freq)
+		return -EINVAL;
+
+	dec = DIV_ROUND_CLOSEST(st->clk_freq, freq);
+
+	if (dec)
+		dec--;
+
+	if (dec > st->info->max_dec)
+		dec = st->info->max_dec;
+
+	ret = adis_write_reg_16(&st->adis, ADIS16475_REG_DEC_RATE, dec);
+	if (ret)
+		return ret;
+
+	/*
+	 * If decimation is used, then gyro and accel data will have meaningful
+	 * bits on the LSB registers. This info is used on the trigger handler.
+	 */
+	assign_bit(ADIS16475_LSB_DEC_MASK, &st->lsb_flag, dec);
+
+	return 0;
+}
+
+/* The values are approximated. */
+static const u32 adis16475_3db_freqs[] = {
+	[0] = 720, /* Filter disabled, full BW (~720Hz) */
+	[1] = 360,
+	[2] = 164,
+	[3] = 80,
+	[4] = 40,
+	[5] = 20,
+	[6] = 10,
+};
+
+static int adis16475_get_filter(struct adis16475 *st, u32 *filter)
+{
+	u16 filter_sz;
+	int ret;
+	const int mask = ADIS16475_FILT_CTRL_MASK;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FILT_CTRL, &filter_sz);
+	if (ret)
+		return ret;
+
+	*filter = adis16475_3db_freqs[filter_sz & mask];
+
+	return 0;
+}
+
+static int adis16475_set_filter(struct adis16475 *st, const u32 filter)
+{
+	int i = ARRAY_SIZE(adis16475_3db_freqs);
+	int ret;
+
+	while (--i) {
+		if (adis16475_3db_freqs[i] >= filter)
+			break;
+	}
+
+	ret = adis_write_reg_16(&st->adis, ADIS16475_REG_FILT_CTRL,
+				ADIS16475_FILT_CTRL(i));
+	if (ret)
+		return ret;
+
+	/*
+	 * If FIR is used, then gyro and accel data will have meaningful
+	 * bits on the LSB registers. This info is used on the trigger handler.
+	 */
+	assign_bit(ADIS16475_LSB_FIR_MASK, &st->lsb_flag, i);
+
+	return 0;
+}
+
+static const u32 adis16475_calib_regs[] = {
+	[ADIS16475_SCAN_GYRO_X] = ADIS16475_REG_X_GYRO_BIAS_L,
+	[ADIS16475_SCAN_GYRO_Y] = ADIS16475_REG_Y_GYRO_BIAS_L,
+	[ADIS16475_SCAN_GYRO_Z] = ADIS16475_REG_Z_GYRO_BIAS_L,
+	[ADIS16475_SCAN_ACCEL_X] = ADIS16475_REG_X_ACCEL_BIAS_L,
+	[ADIS16475_SCAN_ACCEL_Y] = ADIS16475_REG_Y_ACCEL_BIAS_L,
+	[ADIS16475_SCAN_ACCEL_Z] = ADIS16475_REG_Z_ACCEL_BIAS_L,
+};
+
+static int adis16475_read_raw(struct iio_dev *indio_dev,
+			      const struct iio_chan_spec *chan,
+			      int *val, int *val2, long info)
+{
+	struct adis16475 *st = iio_priv(indio_dev);
+	int ret;
+	u32 tmp;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		return adis_single_conversion(indio_dev, chan, 0, val);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			*val = st->info->gyro_max_val;
+			*val2 = st->info->gyro_max_scale;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_ACCEL:
+			*val = st->info->accel_max_val;
+			*val2 = st->info->accel_max_scale;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_TEMP:
+			*val = st->info->temp_scale;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = adis_read_reg_32(&st->adis,
+				       adis16475_calib_regs[chan->scan_index],
+				       val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		ret = adis16475_get_filter(st, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = adis16475_get_freq(st, &tmp);
+		if (ret)
+			return ret;
+
+		*val = tmp / 1000;
+		*val2 = (tmp % 1000) * 1000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adis16475_write_raw(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       int val, int val2, long info)
+{
+	struct adis16475 *st = iio_priv(indio_dev);
+	u32 tmp;
+
+	switch (info) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		tmp = val * 1000 + val2 / 1000;
+		return adis16475_set_freq(st, tmp);
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return adis16475_set_filter(st, val);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return adis_write_reg_32(&st->adis,
+					 adis16475_calib_regs[chan->scan_index],
+					 val);
+	default:
+		return -EINVAL;
+	}
+}
+
+#define ADIS16475_MOD_CHAN(_type, _mod, _address, _si, _r_bits, _s_bits) \
+	{ \
+		.type = (_type), \
+		.modified = 1, \
+		.channel2 = (_mod), \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_CALIBBIAS), \
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
+		.address = (_address), \
+		.scan_index = (_si), \
+		.scan_type = { \
+			.sign = 's', \
+			.realbits = (_r_bits), \
+			.storagebits = (_s_bits), \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+#define ADIS16475_GYRO_CHANNEL(_mod) \
+	ADIS16475_MOD_CHAN(IIO_ANGL_VEL, IIO_MOD_ ## _mod, \
+			   ADIS16475_REG_ ## _mod ## _GYRO_L, \
+			   ADIS16475_SCAN_GYRO_ ## _mod, 32, 32)
+
+#define ADIS16475_ACCEL_CHANNEL(_mod) \
+	ADIS16475_MOD_CHAN(IIO_ACCEL, IIO_MOD_ ## _mod, \
+			   ADIS16475_REG_ ## _mod ## _ACCEL_L, \
+			   ADIS16475_SCAN_ACCEL_ ## _mod, 32, 32)
+
+#define ADIS16475_TEMP_CHANNEL() { \
+		.type = IIO_TEMP, \
+		.indexed = 1, \
+		.channel = 0, \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
+		.address = ADIS16475_REG_TEMP_OUT, \
+		.scan_index = ADIS16475_SCAN_TEMP, \
+		.scan_type = { \
+			.sign = 's', \
+			.realbits = 16, \
+			.storagebits = 16, \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+static const struct iio_chan_spec adis16475_channels[] = {
+	ADIS16475_GYRO_CHANNEL(X),
+	ADIS16475_GYRO_CHANNEL(Y),
+	ADIS16475_GYRO_CHANNEL(Z),
+	ADIS16475_ACCEL_CHANNEL(X),
+	ADIS16475_ACCEL_CHANNEL(Y),
+	ADIS16475_ACCEL_CHANNEL(Z),
+	ADIS16475_TEMP_CHANNEL(),
+	IIO_CHAN_SOFT_TIMESTAMP(7)
+};
+
+enum adis16475_variant {
+	ADIS16470,
+	ADIS16475_1,
+	ADIS16475_2,
+	ADIS16475_3,
+	ADIS16477_1,
+	ADIS16477_2,
+	ADIS16477_3,
+	ADIS16465_1,
+	ADIS16465_2,
+	ADIS16465_3,
+	ADIS16467_1,
+	ADIS16467_2,
+	ADIS16467_3,
+	ADIS16500,
+	ADIS16505_1,
+	ADIS16505_2,
+	ADIS16505_3,
+	ADIS16507_1,
+	ADIS16507_2,
+	ADIS16507_3,
+};
+
+enum {
+	ADIS16475_DIAG_STAT_DATA_PATH = 1,
+	ADIS16475_DIAG_STAT_FLASH_MEM,
+	ADIS16475_DIAG_STAT_SPI,
+	ADIS16475_DIAG_STAT_STANDBY,
+	ADIS16475_DIAG_STAT_SENSOR,
+	ADIS16475_DIAG_STAT_MEMORY,
+	ADIS16475_DIAG_STAT_CLK,
+};
+
+static const char * const adis16475_status_error_msgs[] = {
+	[ADIS16475_DIAG_STAT_DATA_PATH] = "Data Path Overrun",
+	[ADIS16475_DIAG_STAT_FLASH_MEM] = "Flash memory update failure",
+	[ADIS16475_DIAG_STAT_SPI] = "SPI communication error",
+	[ADIS16475_DIAG_STAT_STANDBY] = "Standby mode",
+	[ADIS16475_DIAG_STAT_SENSOR] = "Sensor failure",
+	[ADIS16475_DIAG_STAT_MEMORY] = "Memory failure",
+	[ADIS16475_DIAG_STAT_CLK] = "Clock error",
+};
+
+static int adis16475_enable_irq(struct adis *adis, bool enable)
+{
+	/*
+	 * There is no way to gate the data-ready signal internally inside the
+	 * ADIS16475. We can only control it's polarity...
+	 */
+	if (enable)
+		enable_irq(adis->spi->irq);
+	else
+		disable_irq(adis->spi->irq);
+
+	return 0;
+}
+
+#define ADIS16475_DATA(_prod_id, _timeouts)				\
+{									\
+	.msc_ctrl_reg = ADIS16475_REG_MSG_CTRL,				\
+	.glob_cmd_reg = ADIS16475_REG_GLOB_CMD,				\
+	.diag_stat_reg = ADIS16475_REG_DIAG_STAT,			\
+	.prod_id_reg = ADIS16475_REG_PROD_ID,				\
+	.prod_id = (_prod_id),						\
+	.self_test_mask = BIT(2),					\
+	.self_test_reg = ADIS16475_REG_GLOB_CMD,			\
+	.cs_change_delay = 16,						\
+	.read_delay = 5,						\
+	.write_delay = 5,						\
+	.status_error_msgs = adis16475_status_error_msgs,		\
+	.status_error_mask = BIT(ADIS16475_DIAG_STAT_DATA_PATH) |	\
+		BIT(ADIS16475_DIAG_STAT_FLASH_MEM) |			\
+		BIT(ADIS16475_DIAG_STAT_SPI) |				\
+		BIT(ADIS16475_DIAG_STAT_STANDBY) |			\
+		BIT(ADIS16475_DIAG_STAT_SENSOR) |			\
+		BIT(ADIS16475_DIAG_STAT_MEMORY) |			\
+		BIT(ADIS16475_DIAG_STAT_CLK),				\
+	.enable_irq = adis16475_enable_irq,				\
+	.timeouts = (_timeouts),					\
+}
+
+static const struct adis16475_sync adis16475_sync_mode[] = {
+	{ ADIS16475_SYNC_OUTPUT },
+	{ ADIS16475_SYNC_DIRECT, 1900, 2100 },
+	{ ADIS16475_SYNC_SCALED, 1, 128 },
+	{ ADIS16475_SYNC_PULSE, 1000, 2100 },
+};
+
+static const struct adis_timeout adis16475_timeouts = {
+	.reset_ms = 200,
+	.sw_reset_ms = 200,
+	.self_test_ms = 20,
+};
+
+static const struct adis_timeout adis1650x_timeouts = {
+	.reset_ms = 260,
+	.sw_reset_ms = 260,
+	.self_test_ms = 30,
+};
+
+static const struct adis16475_chip_info adis16475_chip_info[] = {
+	[ADIS16470] = {
+		.name = "adis16470",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16470, &adis16475_timeouts),
+	},
+	[ADIS16475_1] = {
+		.name = "adis16475-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16475, &adis16475_timeouts),
+	},
+	[ADIS16475_2] = {
+		.name = "adis16475-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16475, &adis16475_timeouts),
+	},
+	[ADIS16475_3] = {
+		.name = "adis16475-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16475, &adis16475_timeouts),
+	},
+	[ADIS16477_1] = {
+		.name = "adis16477-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16477, &adis16475_timeouts),
+	},
+	[ADIS16477_2] = {
+		.name = "adis16477-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16477, &adis16475_timeouts),
+	},
+	[ADIS16477_3] = {
+		.name = "adis16477-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16477, &adis16475_timeouts),
+	},
+	[ADIS16465_1] = {
+		.name = "adis16465-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16465, &adis16475_timeouts),
+	},
+	[ADIS16465_2] = {
+		.name = "adis16465-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16465, &adis16475_timeouts),
+	},
+	[ADIS16465_3] = {
+		.name = "adis16465-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16465, &adis16475_timeouts),
+	},
+	[ADIS16467_1] = {
+		.name = "adis16467-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16467, &adis16475_timeouts),
+	},
+	[ADIS16467_2] = {
+		.name = "adis16467-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16467, &adis16475_timeouts),
+	},
+	[ADIS16467_3] = {
+		.name = "adis16467-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16467, &adis16475_timeouts),
+	},
+	[ADIS16500] = {
+		.name = "adis16500",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16500, &adis1650x_timeouts),
+	},
+	[ADIS16505_1] = {
+		.name = "adis16505-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 78,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16505, &adis1650x_timeouts),
+	},
+	[ADIS16505_2] = {
+		.name = "adis16505-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 78,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16505, &adis1650x_timeouts),
+	},
+	[ADIS16505_3] = {
+		.name = "adis16505-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 78,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16505, &adis1650x_timeouts),
+	},
+	[ADIS16507_1] = {
+		.name = "adis16507-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16507, &adis1650x_timeouts),
+	},
+	[ADIS16507_2] = {
+		.name = "adis16507-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16507, &adis1650x_timeouts),
+	},
+	[ADIS16507_3] = {
+		.name = "adis16507-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16507, &adis1650x_timeouts),
+	},
+};
+
+static const struct iio_info adis16475_info = {
+	.read_raw = &adis16475_read_raw,
+	.write_raw = &adis16475_write_raw,
+	.update_scan_mode = adis_update_scan_mode,
+	.debugfs_reg_access = adis_debugfs_reg_access,
+};
+
+static struct adis_burst adis16475_burst = {
+	.en = true,
+	.reg_cmd = ADIS16475_REG_GLOB_CMD,
+	/*
+	 * adis_update_scan_mode_burst() sets the burst length in respect with
+	 * the number of channels and allocates 16 bits for each. However,
+	 * adis1647x devices also need space for DIAG_STAT, DATA_CNTR or
+	 * TIME_STAMP (depending on the clock mode but for us these bytes are
+	 * don't care...) and CRC.
+	 */
+	.extra_len = 3 * sizeof(u16),
+	.burst_max_len = ADIS16475_BURST32_MAX_DATA,
+};
+
+static bool adis16475_validate_crc(const u8 *buffer, u16 crc,
+				   const bool burst32)
+{
+	int i;
+	/* extra 6 elements for low gyro and accel */
+	const u16 sz = burst32 ? ADIS16475_BURST32_MAX_DATA :
+		ADIS16475_BURST_MAX_DATA;
+
+	for (i = 0; i < sz - 2; i++)
+		crc -= buffer[i];
+
+	return crc == 0;
+}
+
+static void adis16475_burst32_check(struct adis16475 *st)
+{
+	int ret;
+	struct adis *adis = &st->adis;
+
+	if (!st->info->has_burst32)
+		return;
+
+	if (st->lsb_flag && !st->burst32) {
+		const u16 en = ADIS16500_BURST32(1);
+
+		ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+					 ADIS16500_BURST32_MASK, en);
+		if (ret)
+			return;
+
+		st->burst32 = true;
+
+		/*
+		 * In 32-bit mode we need extra 2 bytes for all gyro
+		 * and accel channels.
+		 */
+		adis->burst_extra_len = 6 * sizeof(u16);
+		adis->xfer[1].len += 6 * sizeof(u16);
+		dev_dbg(&adis->spi->dev, "Enable burst32 mode, xfer:%d",
+			adis->xfer[1].len);
+
+	} else if (!st->lsb_flag && st->burst32) {
+		const u16 en = ADIS16500_BURST32(0);
+
+		ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+					 ADIS16500_BURST32_MASK, en);
+		if (ret)
+			return;
+
+		st->burst32 = false;
+
+		/* Remove the extra bits */
+		adis->burst_extra_len = 0;
+		adis->xfer[1].len -= 6 * sizeof(u16);
+		dev_dbg(&adis->spi->dev, "Disable burst32 mode, xfer:%d\n",
+			adis->xfer[1].len);
+	}
+}
+
+static irqreturn_t adis16475_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct adis16475 *st = iio_priv(indio_dev);
+	struct adis *adis = &st->adis;
+	int ret, bit, i = 0;
+	__be16 *buffer;
+	u16 crc;
+	bool valid;
+	/* offset until the first element after gyro and accel */
+	const u8 offset = st->burst32 ? 13 : 7;
+	const u32 cached_spi_speed_hz = adis->spi->max_speed_hz;
+
+	adis->spi->max_speed_hz = ADIS16475_BURST_MAX_SPEED;
+
+	ret = spi_sync(adis->spi, &adis->msg);
+	if (ret)
+		return ret;
+
+	adis->spi->max_speed_hz = cached_spi_speed_hz;
+	buffer = adis->buffer;
+
+	crc = be16_to_cpu(buffer[offset + 2]);
+	valid = adis16475_validate_crc(adis->buffer, crc, st->burst32);
+	if (!valid) {
+		dev_err(&adis->spi->dev, "Invalid crc\n");
+		goto check_burst32;
+	}
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		/*
+		 * When burst mode is used, system flags is the first data
+		 * channel in the sequence, but the scan index is 7.
+		 */
+		switch (bit) {
+		case ADIS16475_SCAN_TEMP:
+			st->data[i++] = buffer[offset];
+			break;
+		case ADIS16475_SCAN_GYRO_X ... ADIS16475_SCAN_ACCEL_Z:
+			/*
+			 * The first 2 bytes on the received data are the
+			 * DIAG_STAT reg, hence the +1 offset here...
+			 */
+			if (st->burst32) {
+				/* upper 16 */
+				st->data[i++] = buffer[bit * 2 + 2];
+				/* lower 16 */
+				st->data[i++] = buffer[bit * 2 + 1];
+			} else {
+				st->data[i++] = buffer[bit + 1];
+				/*
+				 * Don't bother in doing the manual read if the
+				 * device supports burst32. burst32 will be
+				 * enabled in the next call to
+				 * adis16475_burst32_check()...
+				 */
+				if (st->lsb_flag && !st->info->has_burst32) {
+					u16 val = 0;
+					const u32 reg = ADIS16475_REG_X_GYRO_L +
+						bit * 4;
+
+					adis_read_reg_16(adis, reg, &val);
+					st->data[i++] = cpu_to_be16(val);
+				} else {
+					/* lower not used */
+					st->data[i++] = 0;
+				}
+			}
+			break;
+		}
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, st->data, pf->timestamp);
+check_burst32:
+	/*
+	 * We only check the burst mode at the end of the current capture since
+	 * it takes a full data ready cycle for the device to update the burst
+	 * array.
+	 */
+	adis16475_burst32_check(st);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static void adis16475_disable_clk(void *data)
+{
+	clk_disable_unprepare((struct clk *)data);
+}
+
+static int adis16475_config_sync_mode(struct adis16475 *st)
+{
+	int ret;
+	struct device *dev = &st->adis.spi->dev;
+	const struct adis16475_sync *sync;
+	u32 sync_mode;
+
+	/* default to internal clk */
+	st->clk_freq = st->info->int_clk * 1000;
+
+	ret = device_property_read_u32(dev, "adi,sync-mode", &sync_mode);
+	if (ret)
+		return 0;
+
+	if (sync_mode >= st->info->num_sync) {
+		dev_err(dev, "Invalid sync mode: %u for %s\n", sync_mode,
+			st->info->name);
+		return -EINVAL;
+	}
+
+	sync = &st->info->sync[sync_mode];
+
+	/* All the other modes require external input signal */
+	if (sync->sync_mode != ADIS16475_SYNC_OUTPUT) {
+		struct clk *clk = devm_clk_get(dev, NULL);
+
+		if (IS_ERR(clk))
+			return PTR_ERR(clk);
+
+		ret = clk_prepare_enable(clk);
+		if (ret)
+			return ret;
+
+		ret = devm_add_action_or_reset(dev, adis16475_disable_clk, clk);
+		if (ret)
+			return ret;
+
+		st->clk_freq = clk_get_rate(clk);
+		if (st->clk_freq < sync->min_rate ||
+		    st->clk_freq > sync->max_rate) {
+			dev_err(dev,
+				"Clk rate:%u not in a valid range:[%u %u]\n",
+				st->clk_freq, sync->min_rate, sync->max_rate);
+			return -EINVAL;
+		}
+
+		if (sync->sync_mode == ADIS16475_SYNC_SCALED) {
+			u16 up_scale;
+			u32 scaled_out_freq = 0;
+			/*
+			 * If we are in scaled mode, we must have an up_scale.
+			 * In scaled mode the allowable input clock range is
+			 * 1 Hz to 128 Hz, and the allowable output range is
+			 * 1900 to 2100 Hz. Hence, a scale must be given to
+			 * get the allowable output.
+			 */
+			ret = device_property_read_u32(dev,
+						       "adi,scaled-output-hz",
+						       &scaled_out_freq);
+			if (ret) {
+				dev_err(dev, "adi,scaled-output-hz must be given when in scaled sync mode");
+				return -EINVAL;
+			} else if (scaled_out_freq < 1900 ||
+				   scaled_out_freq > 2100) {
+				dev_err(dev, "Invalid value: %u for adi,scaled-output-hz",
+					scaled_out_freq);
+				return -EINVAL;
+			}
+
+			up_scale = DIV_ROUND_CLOSEST(scaled_out_freq,
+						     st->clk_freq);
+
+			ret = __adis_write_reg_16(&st->adis,
+						  ADIS16475_REG_UP_SCALE,
+						  up_scale);
+			if (ret)
+				return ret;
+
+			st->clk_freq = scaled_out_freq;
+		}
+
+		st->clk_freq *= 1000;
+	}
+	/*
+	 * Keep in mind that the mask for the clk modes in adis1650*
+	 * chips is different (1100 instead of 11100). However, we
+	 * are not configuring BIT(4) in these chips and the default
+	 * value is 0, so we are fine in doing the below operations.
+	 * I'm keeping this for simplicity and avoiding extra variables
+	 * in chip_info.
+	 */
+	ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+				 ADIS16475_SYNC_MODE_MASK, sync->sync_mode);
+	if (ret)
+		return ret;
+
+	usleep_range(250, 260);
+
+	return 0;
+}
+
+static int adis16475_config_irq_pin(struct adis16475 *st)
+{
+	int ret;
+	struct irq_data *desc;
+	u32 irq_type;
+	u16 val = 0;
+	u8 polarity;
+	struct spi_device *spi = st->adis.spi;
+
+	desc = irq_get_irq_data(spi->irq);
+	if (!desc) {
+		dev_err(&spi->dev, "Could not find IRQ %d\n", spi->irq);
+		return -EINVAL;
+	}
+	/*
+	 * It is possible to configure the data ready polarity. Furthermore, we
+	 * need to update the adis struct if we want data ready as active low.
+	 */
+	irq_type = irqd_get_trigger_type(desc);
+	if (irq_type == IRQ_TYPE_EDGE_RISING) {
+		polarity = 1;
+		st->adis.irq_flag = IRQF_TRIGGER_RISING;
+	} else if (irq_type == IRQ_TYPE_EDGE_FALLING) {
+		polarity = 0;
+		st->adis.irq_flag = IRQF_TRIGGER_FALLING;
+	} else {
+		dev_err(&spi->dev, "Invalid interrupt type 0x%x specified\n",
+			irq_type);
+		return -EINVAL;
+	}
+
+	val = ADIS16475_MSG_CTRL_DR_POL(polarity);
+	ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+				 ADIS16475_MSG_CTRL_DR_POL_MASK, val);
+	if (ret)
+		return ret;
+	/*
+	 * There is a delay writing to any bits written to the MSC_CTRL
+	 * register. It should not be bigger than 200us, so 250 should be more
+	 * than enough!
+	 */
+	usleep_range(250, 260);
+
+	return 0;
+}
+
+static const struct of_device_id adis16475_of_match[] = {
+	{ .compatible = "adi,adis16470",
+		.data = &adis16475_chip_info[ADIS16470] },
+	{ .compatible = "adi,adis16475-1",
+		.data = &adis16475_chip_info[ADIS16475_1] },
+	{ .compatible = "adi,adis16475-2",
+		.data = &adis16475_chip_info[ADIS16475_2] },
+	{ .compatible = "adi,adis16475-3",
+		.data = &adis16475_chip_info[ADIS16475_3] },
+	{ .compatible = "adi,adis16477-1",
+		.data = &adis16475_chip_info[ADIS16477_1] },
+	{ .compatible = "adi,adis16477-2",
+		.data = &adis16475_chip_info[ADIS16477_2] },
+	{ .compatible = "adi,adis16477-3",
+		.data = &adis16475_chip_info[ADIS16477_3] },
+	{ .compatible = "adi,adis16465-1",
+		.data = &adis16475_chip_info[ADIS16465_1] },
+	{ .compatible = "adi,adis16465-2",
+		.data = &adis16475_chip_info[ADIS16465_2] },
+	{ .compatible = "adi,adis16465-3",
+		.data = &adis16475_chip_info[ADIS16465_3] },
+	{ .compatible = "adi,adis16467-1",
+		.data = &adis16475_chip_info[ADIS16467_1] },
+	{ .compatible = "adi,adis16467-2",
+		.data = &adis16475_chip_info[ADIS16467_2] },
+	{ .compatible = "adi,adis16467-3",
+		.data = &adis16475_chip_info[ADIS16467_3] },
+	{ .compatible = "adi,adis16500",
+		.data = &adis16475_chip_info[ADIS16500] },
+	{ .compatible = "adi,adis16505-1",
+		.data = &adis16475_chip_info[ADIS16505_1] },
+	{ .compatible = "adi,adis16505-2",
+		.data = &adis16475_chip_info[ADIS16505_2] },
+	{ .compatible = "adi,adis16505-3",
+		.data = &adis16475_chip_info[ADIS16505_3] },
+	{ .compatible = "adi,adis16507-1",
+		.data = &adis16475_chip_info[ADIS16507_1] },
+	{ .compatible = "adi,adis16507-2",
+		.data = &adis16475_chip_info[ADIS16507_2] },
+	{ .compatible = "adi,adis16507-3",
+		.data = &adis16475_chip_info[ADIS16507_3] },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, adis16475_of_match);
+
+static int adis16475_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct adis16475 *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	spi_set_drvdata(spi, indio_dev);
+	st->adis.burst = &adis16475_burst;
+
+	st->info = device_get_match_data(&spi->dev);
+	if (!st->info)
+		return -EINVAL;
+
+	ret = adis_init(&st->adis, indio_dev, spi, &st->info->adis_data);
+	if (ret)
+		return ret;
+
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->name = st->info->name;
+	indio_dev->channels = st->info->channels;
+	indio_dev->num_channels = st->info->num_channels;
+	indio_dev->info = &adis16475_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = __adis_initial_startup(&st->adis);
+	if (ret)
+		return ret;
+
+	ret = adis16475_config_irq_pin(st);
+	if (ret)
+		return ret;
+
+	ret = adis16475_config_sync_mode(st);
+	if (ret)
+		return ret;
+
+	ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev,
+						 adis16475_trigger_handler);
+	if (ret)
+		return ret;
+
+	adis16475_enable_irq(&st->adis, false);
+
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	adis16475_debugfs_init(indio_dev);
+
+	return 0;
+}
+
+static struct spi_driver adis16475_driver = {
+	.driver = {
+		.name = "adis16475",
+		.of_match_table = adis16475_of_match,
+	},
+	.probe = adis16475_probe,
+};
+module_spi_driver(adis16475_driver);
+
+MODULE_AUTHOR("Nuno Sa <[e-mail]>");
+MODULE_DESCRIPTION("Analog Devices ADIS16475 IMU driver");
+MODULE_LICENSE("GPL");

drivers/iio/imu/adis16480.c

···
 static int adis16480_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16480 *adis16480 = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	debugfs_create_file_unsafe("firmware_revision", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_firmware_revision_fops);
+		d, adis16480, &adis16480_firmware_revision_fops);
 	debugfs_create_file_unsafe("firmware_date", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_firmware_date_fops);
+		d, adis16480, &adis16480_firmware_date_fops);
 	debugfs_create_file_unsafe("serial_number", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_serial_number_fops);
+		d, adis16480, &adis16480_serial_number_fops);
 	debugfs_create_file_unsafe("product_id", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_product_id_fops);
+		d, adis16480, &adis16480_product_id_fops);
 	debugfs_create_file_unsafe("flash_count", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_flash_count_fops);
+		d, adis16480, &adis16480_flash_count_fops);
 
 	return 0;
 }

drivers/iio/imu/adis_buffer.c

···
 	const unsigned long *scan_mask)
 {
 	struct adis *adis = iio_device_get_drvdata(indio_dev);
-	unsigned int burst_length;
+	unsigned int burst_length, burst_max_length;
 	u8 *tx;
 
 	/* All but the timestamp channel */
 	burst_length = (indio_dev->num_channels - 1) * sizeof(u16);
-	burst_length += adis->burst->extra_len;
+	burst_length += adis->burst->extra_len + adis->burst_extra_len;
+
+	if (adis->burst->burst_max_len)
+		burst_max_length = adis->burst->burst_max_len;
+	else
+		burst_max_length = burst_length;
 
 	adis->xfer = kcalloc(2, sizeof(*adis->xfer), GFP_KERNEL);
 	if (!adis->xfer)
 		return -ENOMEM;
 
-	adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
+	adis->buffer = kzalloc(burst_max_length + sizeof(u16), GFP_KERNEL);
 	if (!adis->buffer) {
 		kfree(adis->xfer);
 		adis->xfer = NULL;
 		return -ENOMEM;
 	}
 
-	tx = adis->buffer + burst_length;
+	tx = adis->buffer + burst_max_length;
 	tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
 	tx[1] = 0;
 
···
 	return IRQ_HANDLED;
 }
 
+static void adis_buffer_cleanup(void *arg)
+{
+	struct adis *adis = arg;
+
+	kfree(adis->buffer);
+	kfree(adis->xfer);
+}
+
 /**
  * adis_setup_buffer_and_trigger() - Sets up buffer and trigger for the adis device
  * @adis: The adis device.
···
 	return ret;
 }
 EXPORT_SYMBOL_GPL(adis_setup_buffer_and_trigger);
+
+/**
+ * devm_adis_setup_buffer_and_trigger() - Sets up buffer and trigger for
+ *					  the managed adis device
+ * @adis: The adis device
+ * @indio_dev: The IIO device
+ * @trigger_handler: Optional trigger handler, may be NULL.
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ *
+ * This function perfoms exactly the same as adis_setup_buffer_and_trigger()
+ */
+int
+devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
+				   irq_handler_t trigger_handler)
+{
+	int ret;
+
+	if (!trigger_handler)
+		trigger_handler = adis_trigger_handler;
+
+	ret = devm_iio_triggered_buffer_setup(&adis->spi->dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      trigger_handler, NULL);
+	if (ret)
+		return ret;
+
+	if (adis->spi->irq) {
+		ret = devm_adis_probe_trigger(adis, indio_dev);
+		if (ret)
+			return ret;
+	}
+
+	return devm_add_action_or_reset(&adis->spi->dev, adis_buffer_cleanup,
+					adis);
+}
+EXPORT_SYMBOL_GPL(devm_adis_setup_buffer_and_trigger);
 
 /**
  * adis_cleanup_buffer_and_trigger() - Free buffer and trigger resources

drivers/iio/imu/adis_trigger.c

···
 	.set_trigger_state = &adis_data_rdy_trigger_set_state,
 };
 
+static void adis_trigger_setup(struct adis *adis)
+{
+	adis->trig->dev.parent = &adis->spi->dev;
+	adis->trig->ops = &adis_trigger_ops;
+	iio_trigger_set_drvdata(adis->trig, adis);
+}
+
+static int adis_validate_irq_flag(struct adis *adis)
+{
+	/*
+	 * Typically this devices have data ready either on the rising edge or
+	 * on the falling edge of the data ready pin. This checks enforces that
+	 * one of those is set in the drivers... It defaults to
+	 * IRQF_TRIGGER_RISING for backward compatibility wiht devices that
+	 * don't support changing the pin polarity.
+	 */
+	if (!adis->irq_flag) {
+		adis->irq_flag = IRQF_TRIGGER_RISING;
+		return 0;
+	} else if (adis->irq_flag != IRQF_TRIGGER_RISING &&
+		   adis->irq_flag != IRQF_TRIGGER_FALLING) {
+		dev_err(&adis->spi->dev, "Invalid IRQ mask: %08lx\n",
+			adis->irq_flag);
+		return -EINVAL;
+	}
+
+	return 0;
+}
 /**
  * adis_probe_trigger() - Sets up trigger for a adis device
  * @adis: The adis device
···
 	if (adis->trig == NULL)
 		return -ENOMEM;
 
-	adis->trig->dev.parent = &adis->spi->dev;
-	adis->trig->ops = &adis_trigger_ops;
-	iio_trigger_set_drvdata(adis->trig, adis);
+	adis_trigger_setup(adis);
+
+	ret = adis_validate_irq_flag(adis);
+	if (ret)
+		return ret;
 
 	ret = request_irq(adis->spi->irq,
 			  &iio_trigger_generic_data_rdy_poll,
-			  IRQF_TRIGGER_RISING,
+			  adis->irq_flag,
 			  indio_dev->name,
 			  adis->trig);
 	if (ret)
···
 	return ret;
 }
 EXPORT_SYMBOL_GPL(adis_probe_trigger);
+
+/**
+ * devm_adis_probe_trigger() - Sets up trigger for a managed adis device
+ * @adis: The adis device
+ * @indio_dev: The IIO device
+ *
+ * Returns 0 on success or a negative error code
+ */
+int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
+{
+	int ret;
+
+	adis->trig = devm_iio_trigger_alloc(&adis->spi->dev, "%s-dev%d",
+					    indio_dev->name, indio_dev->id);
+	if (!adis->trig)
+		return -ENOMEM;
+
+	adis_trigger_setup(adis);
+
+	ret = adis_validate_irq_flag(adis);
+	if (ret)
+		return ret;
+
+	ret = devm_request_irq(&adis->spi->dev, adis->spi->irq,
+			       &iio_trigger_generic_data_rdy_poll,
+			       adis->irq_flag,
+			       indio_dev->name,
+			       adis->trig);
+	if (ret)
+		return ret;
+
+	return devm_iio_trigger_register(&adis->spi->dev, adis->trig);
+}
+EXPORT_SYMBOL_GPL(devm_adis_probe_trigger);
 
 /**
  * adis_remove_trigger() - Remove trigger for a adis devices

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

···
  *   - FIFO size: 4KB
  *
  * - LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/ISM330DHCX:
- *   - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416
+ *   - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416,
+ *     833
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
  *   - FIFO size: 3KB
···
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
···
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 		},
 		.fs_table = {
···
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
···
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 		},
 		.fs_table = {
···
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
···
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 		},
 		.fs_table = {

drivers/iio/industrialio-buffer.c

···
  */
 void iio_buffer_wakeup_poll(struct iio_dev *indio_dev)
 {
-	if (!indio_dev->buffer)
+	struct iio_buffer *buffer = indio_dev->buffer;
+
+	if (!buffer)
 		return;
 
-	wake_up(&indio_dev->buffer->pollq);
+	wake_up(&buffer->pollq);
 }
 
 void iio_buffer_init(struct iio_buffer *buffer)
···
 {
 	int ret;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = indio_dev->buffer;
 
 	/* Ensure ret is 0 or 1. */
 	ret = !!test_bit(to_iio_dev_attr(attr)->address,
-		       indio_dev->buffer->scan_mask);
+		       buffer->scan_mask);
 
 	return sprintf(buf, "%d\n", ret);
 }
···
 	if (ret < 0)
 		return ret;
 	mutex_lock(&indio_dev->mlock);
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 		goto error_ret;
 	}
···
 				   char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	return sprintf(buf, "%d\n", indio_dev->buffer->scan_timestamp);
+	struct iio_buffer *buffer = indio_dev->buffer;
+
+	return sprintf(buf, "%d\n", buffer->scan_timestamp);
 }
 
 static ssize_t iio_scan_el_ts_store(struct device *dev,
···
 {
 	int ret;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = indio_dev->buffer;
 	bool state;
 
 	ret = strtobool(buf, &state);
···
 		return ret;
 
 	mutex_lock(&indio_dev->mlock);
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 		goto error_ret;
 	}
-	indio_dev->buffer->scan_timestamp = state;
+	buffer->scan_timestamp = state;
 error_ret:
 	mutex_unlock(&indio_dev->mlock);
 
···
 }
 
 static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
+					struct iio_buffer *buffer,
 					const struct iio_chan_spec *chan)
 {
 	int ret, attrcount = 0;
-	struct iio_buffer *buffer = indio_dev->buffer;
 
 	ret = __iio_add_chan_devattr("index",
 				     chan,
···
 		return len;
 
 	mutex_lock(&indio_dev->mlock);
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 	} else {
 		buffer->access->set_length(buffer, val);
···
 				      char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	return sprintf(buf, "%d\n", iio_buffer_is_active(indio_dev->buffer));
+	struct iio_buffer *buffer = indio_dev->buffer;
+
+	return sprintf(buf, "%d\n", iio_buffer_is_active(buffer));
 }
 
 static unsigned int iio_storage_bytes_for_si(struct iio_dev *indio_dev,
···
 	int ret;
 	bool requested_state;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = indio_dev->buffer;
 	bool inlist;
 
 	ret = strtobool(buf, &requested_state);
···
 	mutex_lock(&indio_dev->mlock);
 
 	/* Find out if it is in the list */
-	inlist = iio_buffer_is_active(indio_dev->buffer);
+	inlist = iio_buffer_is_active(buffer);
 	/* Already in desired state */
 	if (inlist == requested_state)
 		goto done;
 
 	if (requested_state)
-		ret = __iio_update_buffers(indio_dev,
-					 indio_dev->buffer, NULL);
+		ret = __iio_update_buffers(indio_dev, buffer, NULL);
 	else
-		ret = __iio_update_buffers(indio_dev,
-					 NULL, indio_dev->buffer);
+		ret = __iio_update_buffers(indio_dev, NULL, buffer);
 
 done:
 	mutex_unlock(&indio_dev->mlock);
···
 		goto out;
 	}
 
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 		goto out;
 	}
···
 						char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	size_t bytes;
+	struct iio_buffer *buffer = indio_dev->buffer;
 
-	bytes = iio_buffer_data_available(indio_dev->buffer);
-
-	return sprintf(buf, "%zu\n", bytes);
+	return sprintf(buf, "%zu\n", iio_buffer_data_available(buffer));
 }
 
 static DEVICE_ATTR(length, S_IRUGO | S_IWUSR, iio_buffer_read_length,
···
 			if (channels[i].scan_index < 0)
 				continue;
 
-			ret = iio_buffer_add_channel_sysfs(indio_dev,
+			ret = iio_buffer_add_channel_sysfs(indio_dev, buffer,
 							 &channels[i]);
 			if (ret < 0)
 				goto error_cleanup_dynamic;
···
 	bitmap_free(buffer->scan_mask);
 error_cleanup_dynamic:
 	iio_free_chan_devattr_list(&buffer->scan_el_dev_attr_list);
-	kfree(indio_dev->buffer->buffer_group.attrs);
+	kfree(buffer->buffer_group.attrs);
 
 	return ret;
 }
 
 void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev)
 {
-	if (!indio_dev->buffer)
+	struct iio_buffer *buffer = indio_dev->buffer;
+
+	if (!buffer)
 		return;
 
-	bitmap_free(indio_dev->buffer->scan_mask);
-	kfree(indio_dev->buffer->buffer_group.attrs);
-	kfree(indio_dev->buffer->scan_el_group.attrs);
-	iio_free_chan_devattr_list(&indio_dev->buffer->scan_el_dev_attr_list);
+	bitmap_free(buffer->scan_mask);
+	kfree(buffer->buffer_group.attrs);
+	kfree(buffer->scan_el_group.attrs);
+	iio_free_chan_devattr_list(&buffer->scan_el_dev_attr_list);
 }
 
 /**

drivers/iio/industrialio-core.c

···
 	alloc_size += IIO_ALIGN - 1;
 
 	dev = kzalloc(alloc_size, GFP_KERNEL);
+	if (!dev)
+		return NULL;
 
-	if (dev) {
-		dev->dev.groups = dev->groups;
-		dev->dev.type = &iio_device_type;
-		dev->dev.bus = &iio_bus_type;
-		device_initialize(&dev->dev);
-		dev_set_drvdata(&dev->dev, (void *)dev);
-		mutex_init(&dev->mlock);
-		mutex_init(&dev->info_exist_lock);
-		INIT_LIST_HEAD(&dev->channel_attr_list);
+	dev->dev.groups = dev->groups;
+	dev->dev.type = &iio_device_type;
+	dev->dev.bus = &iio_bus_type;
+	device_initialize(&dev->dev);
+	dev_set_drvdata(&dev->dev, (void *)dev);
+	mutex_init(&dev->mlock);
+	mutex_init(&dev->info_exist_lock);
+	INIT_LIST_HEAD(&dev->channel_attr_list);
 
-		dev->id = ida_simple_get(&iio_ida, 0, 0, GFP_KERNEL);
-		if (dev->id < 0) {
-			/* cannot use a dev_err as the name isn't available */
-			pr_err("failed to get device id\n");
-			kfree(dev);
-			return NULL;
-		}
-		dev_set_name(&dev->dev, "iio:device%d", dev->id);
-		INIT_LIST_HEAD(&dev->buffer_list);
+	dev->id = ida_simple_get(&iio_ida, 0, 0, GFP_KERNEL);
+	if (dev->id < 0) {
+		/* cannot use a dev_err as the name isn't available */
+		pr_err("failed to get device id\n");
+		kfree(dev);
+		return NULL;
 	}
+	dev_set_name(&dev->dev, "iio:device%d", dev->id);
+	INIT_LIST_HEAD(&dev->buffer_list);
 
 	return dev;
 }

drivers/iio/light/Kconfig

···
 
 config VCNL4000
 	tristate "VCNL4000/4010/4020/4200 combined ALS and proximity sensor"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	depends on I2C
 	help
 	  Say Y here if you want to build a driver for the Vishay VCNL4000,

drivers/iio/light/bh1780.c

···
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/pm_runtime.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
···
 
 MODULE_DEVICE_TABLE(i2c, bh1780_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id of_bh1780_match[] = {
 	{ .compatible = "rohm,bh1780gli", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, of_bh1780_match);
-#endif
 
 static struct i2c_driver bh1780_driver = {
 	.probe		= bh1780_probe,
···
 	.driver = {
 		.name = "bh1780",
 		.pm = &bh1780_dev_pm_ops,
-		.of_match_table = of_match_ptr(of_bh1780_match),
+		.of_match_table = of_bh1780_match,
 	},
 };
 

drivers/iio/light/cm32181.c

···
  * Author: Kevin Tsai <[e-mail]>
  */
 
+#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/interrupt.h>
 #include <linux/regulator/consumer.h>
 #include <linux/iio/iio.h>
···
 
 /* Registers Address */
 #define CM32181_REG_ADDR_CMD		0x00
+#define CM32181_REG_ADDR_WH		0x01
+#define CM32181_REG_ADDR_WL		0x02
+#define CM32181_REG_ADDR_TEST		0x03
 #define CM32181_REG_ADDR_ALS		0x04
 #define CM32181_REG_ADDR_STATUS		0x06
 #define CM32181_REG_ADDR_ID		0x07
 
 /* Number of Configurable Registers */
-#define CM32181_CONF_REG_NUM		0x01
+#define CM32181_CONF_REG_NUM		4
 
 /* CMD register */
-#define CM32181_CMD_ALS_ENABLE		0x00
-#define CM32181_CMD_ALS_DISABLE		0x01
-#define CM32181_CMD_ALS_INT_EN		0x02
+#define CM32181_CMD_ALS_DISABLE		BIT(0)
+#define CM32181_CMD_ALS_INT_EN		BIT(1)
+#define CM32181_CMD_ALS_THRES_WINDOW	BIT(2)
+
+#define CM32181_CMD_ALS_PERS_SHIFT	4
+#define CM32181_CMD_ALS_PERS_MASK	(0x03 << CM32181_CMD_ALS_PERS_SHIFT)
+#define CM32181_CMD_ALS_PERS_DEFAULT	(0x01 << CM32181_CMD_ALS_PERS_SHIFT)
 
 #define CM32181_CMD_ALS_IT_SHIFT	6
 #define CM32181_CMD_ALS_IT_MASK		(0x0F << CM32181_CMD_ALS_IT_SHIFT)
···
 #define CM32181_CMD_ALS_SM_MASK		(0x03 << CM32181_CMD_ALS_SM_SHIFT)
 #define CM32181_CMD_ALS_SM_DEFAULT	(0x01 << CM32181_CMD_ALS_SM_SHIFT)
 
-#define CM32181_MLUX_PER_BIT		5	/* ALS_SM=01 IT=800ms */
-#define CM32181_MLUX_PER_BIT_BASE_IT	800000	/* Based on IT=800ms */
-#define	CM32181_CALIBSCALE_DEFAULT	1000
-#define CM32181_CALIBSCALE_RESOLUTION	1000
-#define MLUX_PER_LUX			1000
+#define CM32181_LUX_PER_BIT		500	/* ALS_SM=01 IT=800ms */
+#define CM32181_LUX_PER_BIT_RESOLUTION	100000
+#define CM32181_LUX_PER_BIT_BASE_IT	800000	/* Based on IT=800ms */
+#define CM32181_CALIBSCALE_DEFAULT	100000
+#define CM32181_CALIBSCALE_RESOLUTION	100000
 
-static const u8 cm32181_reg[CM32181_CONF_REG_NUM] = {
-	CM32181_REG_ADDR_CMD,
+#define SMBUS_ALERT_RESPONSE_ADDRESS	0x0c
+
+/* CPM0 Index 0: device-id (3218 or 32181), 1: Unknown, 2: init_regs_bitmap */
+#define CPM0_REGS_BITMAP		2
+#define CPM0_HEADER_SIZE		3
+
+/* CPM1 Index 0: lux_per_bit, 1: calibscale, 2: resolution (100000) */
+#define CPM1_LUX_PER_BIT		0
+#define CPM1_CALIBSCALE			1
+#define CPM1_SIZE			3
+
+/* CM3218 Family */
+static const int cm3218_als_it_bits[] = { 0, 1, 2, 3 };
+static const int cm3218_als_it_values[] = { 100000, 200000, 400000, 800000 };
+
+/* CM32181 Family */
+static const int cm32181_als_it_bits[] = { 12, 8, 0, 1, 2, 3 };
+static const int cm32181_als_it_values[] = {
+	25000, 50000, 100000, 200000, 400000, 800000
 };
-
-static const int als_it_bits[] = {12, 8, 0, 1, 2, 3};
-static const int als_it_value[] = {25000, 50000, 100000, 200000, 400000,
-	800000};
 
 struct cm32181_chip {
 	struct i2c_client *client;
+	struct device *dev;
 	struct mutex lock;
 	u16 conf_regs[CM32181_CONF_REG_NUM];
+	unsigned long init_regs_bitmap;
 	int calibscale;
+	int lux_per_bit;
+	int lux_per_bit_base_it;
+	int num_als_it;
+	const int *als_it_bits;
+	const int *als_it_values;
 };
+
+static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val2);
+
+#ifdef CONFIG_ACPI
+/**
+ * cm32181_acpi_get_cpm() - Get CPM object from ACPI
+ * @client	pointer of struct i2c_client.
+ * @obj_name	pointer of ACPI object name.
+ * @count	maximum size of return array.
+ * @vals	pointer of array for return elements.
+ *
+ * Convert ACPI CPM table to array.
+ *
+ * Return: -ENODEV for fail.  Otherwise is number of elements.
+ */
+static int cm32181_acpi_get_cpm(struct device *dev, char *obj_name,
+				u64 *values, int count)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *cpm, *elem;
+	acpi_handle handle;
+	acpi_status status;
+	int i;
+
+	handle = ACPI_HANDLE(dev);
+	if (!handle)
+		return -ENODEV;
+
+	status = acpi_evaluate_object(handle, obj_name, NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "object %s not found\n", obj_name);
+		return -ENODEV;
+	}
+
+	cpm = buffer.pointer;
+	if (cpm->package.count > count)
+		dev_warn(dev, "%s table contains %u values, only using first %d values\n",
+			 obj_name, cpm->package.count, count);
+
+	count = min_t(int, cpm->package.count, count);
+	for (i = 0; i < count; i++) {
+		elem = &(cpm->package.elements[i]);
+		values[i] = elem->integer.value;
+	}
+
+	kfree(buffer.pointer);
+
+	return count;
+}
+
+static void cm32181_acpi_parse_cpm_tables(struct cm32181_chip *cm32181)
+{
+	u64 vals[CPM0_HEADER_SIZE + CM32181_CONF_REG_NUM];
+	struct device *dev = cm32181->dev;
+	int i, count;
+
+	count = cm32181_acpi_get_cpm(dev, "CPM0", vals, ARRAY_SIZE(vals));
+	if (count <= CPM0_HEADER_SIZE)
+		return;
+
+	count -= CPM0_HEADER_SIZE;
+
+	cm32181->init_regs_bitmap = vals[CPM0_REGS_BITMAP];
+	cm32181->init_regs_bitmap &= GENMASK(count - 1, 0);
+	for_each_set_bit(i, &cm32181->init_regs_bitmap, count)
+		cm32181->conf_regs[i] =	vals[CPM0_HEADER_SIZE + i];
+
+	count = cm32181_acpi_get_cpm(dev, "CPM1", vals, ARRAY_SIZE(vals));
+	if (count != CPM1_SIZE)
+		return;
+
+	cm32181->lux_per_bit = vals[CPM1_LUX_PER_BIT];
+
+	/* Check for uncalibrated devices */
+	if (vals[CPM1_CALIBSCALE] == CM32181_CALIBSCALE_DEFAULT)
+		return;
+
+	cm32181->calibscale = vals[CPM1_CALIBSCALE];
+	/* CPM1 lux_per_bit is for the current it value */
+	cm32181_read_als_it(cm32181, &cm32181->lux_per_bit_base_it);
+}
+#else
+static void cm32181_acpi_parse_cpm_tables(struct cm32181_chip *cm32181)
+{
+}
+#endif /* CONFIG_ACPI */
 
 /**
  * cm32181_reg_init() - Initialize CM32181 registers
···
 		return ret;
 
 	/* check device ID */
-	if ((ret & 0xFF) != 0x81)
+	switch (ret & 0xFF) {
+	case 0x18: /* CM3218 */
+		cm32181->num_als_it = ARRAY_SIZE(cm3218_als_it_bits);
+		cm32181->als_it_bits = cm3218_als_it_bits;
+		cm32181->als_it_values = cm3218_als_it_values;
+		break;
+	case 0x81: /* CM32181 */
+	case 0x82: /* CM32182, fully compat. with CM32181 */
+		cm32181->num_als_it = ARRAY_SIZE(cm32181_als_it_bits);
+		cm32181->als_it_bits = cm32181_als_it_bits;
+		cm32181->als_it_values = cm32181_als_it_values;
+		break;
+	default:
 		return -ENODEV;
+	}
 
 	/* Default Values */
-	cm32181->conf_regs[CM32181_REG_ADDR_CMD] = CM32181_CMD_ALS_ENABLE |
+	cm32181->conf_regs[CM32181_REG_ADDR_CMD] =
 			CM32181_CMD_ALS_IT_DEFAULT | CM32181_CMD_ALS_SM_DEFAULT;
+	cm32181->init_regs_bitmap = BIT(CM32181_REG_ADDR_CMD);
 	cm32181->calibscale = CM32181_CALIBSCALE_DEFAULT;
+	cm32181->lux_per_bit = CM32181_LUX_PER_BIT;
+	cm32181->lux_per_bit_base_it = CM32181_LUX_PER_BIT_BASE_IT;
+
+	if (ACPI_HANDLE(cm32181->dev))
+		cm32181_acpi_parse_cpm_tables(cm32181);
 
 	/* Initialize registers*/
-	for (i = 0; i < CM32181_CONF_REG_NUM; i++) {
-		ret = i2c_smbus_write_word_data(client, cm32181_reg[i],
-			cm32181->conf_regs[i]);
+	for_each_set_bit(i, &cm32181->init_regs_bitmap, CM32181_CONF_REG_NUM) {
+		ret = i2c_smbus_write_word_data(client, i,
+						cm32181->conf_regs[i]);
 		if (ret < 0)
 			return ret;
 	}
···
  *  @cm32181:	pointer of struct cm32181
  *  @val2:	pointer of int to load the als_it value.
  *
- *  Report the current integartion time by millisecond.
+ *  Report the current integration time in milliseconds.
  *
  *  Return: IIO_VAL_INT_PLUS_MICRO for success, otherwise -EINVAL.
  */
···
 	als_it = cm32181->conf_regs[CM32181_REG_ADDR_CMD];
 	als_it &= CM32181_CMD_ALS_IT_MASK;
 	als_it >>= CM32181_CMD_ALS_IT_SHIFT;
-	for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {
-		if (als_it == als_it_bits[i]) {
-			*val2 = als_it_value[i];
+	for (i = 0; i < cm32181->num_als_it; i++) {
+		if (als_it == cm32181->als_it_bits[i]) {
+			*val2 = cm32181->als_it_values[i];
 			return IIO_VAL_INT_PLUS_MICRO;
 		}
 	}
···
 	u16 als_it;
 	int ret, i, n;
 
-	n = ARRAY_SIZE(als_it_value);
+	n = cm32181->num_als_it;
 	for (i = 0; i < n; i++)
-		if (val <= als_it_value[i])
+		if (val <= cm32181->als_it_values[i])
 			break;
 	if (i >= n)
 		i = n - 1;
 
-	als_it = als_it_bits[i];
+	als_it = cm32181->als_it_bits[i];
 	als_it <<= CM32181_CMD_ALS_IT_SHIFT;
 
 	mutex_lock(&cm32181->lock);
···
 	struct i2c_client *client = cm32181->client;
 	int ret;
 	int als_it;
-	unsigned long lux;
+	u64 lux;
 
 	ret = cm32181_read_als_it(cm32181, &als_it);
 	if (ret < 0)
 		return -EINVAL;
 
-	lux = CM32181_MLUX_PER_BIT;
-	lux *= CM32181_MLUX_PER_BIT_BASE_IT;
-	lux /= als_it;
+	lux = cm32181->lux_per_bit;
+	lux *= cm32181->lux_per_bit_base_it;
+	lux = div_u64(lux, als_it);
 
 	ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ALS);
 	if (ret < 0)
···
 
 	lux *= ret;
 	lux *= cm32181->calibscale;
-	lux /= CM32181_CALIBSCALE_RESOLUTION;
-	lux /= MLUX_PER_LUX;
+	lux = div_u64(lux, CM32181_CALIBSCALE_RESOLUTION);
+	lux = div_u64(lux, CM32181_LUX_PER_BIT_RESOLUTION);
 
 	if (lux > 0xFFFF)
 		lux = 0xFFFF;
···
 static ssize_t cm32181_get_it_available(struct device *dev,
 			struct device_attribute *attr, char *buf)
 {
+	struct cm32181_chip *cm32181 = iio_priv(dev_to_iio_dev(dev));
 	int i, n, len;
 
-	n = ARRAY_SIZE(als_it_value);
+	n = cm32181->num_als_it;
 	for (i = 0, len = 0; i < n; i++)
-		len += sprintf(buf + len, "0.%06u ", als_it_value[i]);
+		len += sprintf(buf + len, "0.%06u ", cm32181->als_it_values[i]);
 	return len + sprintf(buf + len, "\n");
 }
 
···
 	.attrs			= &cm32181_attribute_group,
 };
 
-static int cm32181_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static int cm32181_probe(struct i2c_client *client)
 {
+	struct device *dev = &client->dev;
 	struct cm32181_chip *cm32181;
 	struct iio_dev *indio_dev;
 	int ret;
 
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm32181));
-	if (!indio_dev) {
-		dev_err(&client->dev, "devm_iio_device_alloc failed\n");
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*cm32181));
+	if (!indio_dev)
 		return -ENOMEM;
+
+	/*
+	 * Some ACPI systems list 2 I2C resources for the CM3218 sensor, the
+	 * SMBus Alert Response Address (ARA, 0x0c) and the actual I2C address.
+	 * Detect this and take the following step to deal with it:
+	 * 1. When a SMBus Alert capable sensor has an Alert asserted, it will
+	 *    not respond on its actual I2C address. Read a byte from the ARA
+	 *    to clear any pending Alerts.
+	 * 2. Create a "dummy" client for the actual I2C address and
+	 *    use that client to communicate with the sensor.
+	 */
+	if (ACPI_HANDLE(dev) && client->addr == SMBUS_ALERT_RESPONSE_ADDRESS) {
+		struct i2c_board_info board_info = { .type = "dummy" };
+
+		i2c_smbus_read_byte(client);
+
+		client = i2c_acpi_new_device(dev, 1, &board_info);
+		if (IS_ERR(client))
+			return PTR_ERR(client);
 	}
 
 	cm32181 = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
 	cm32181->client = client;
+	cm32181->dev = dev;
 
 	mutex_init(&cm32181->lock);
-	indio_dev->dev.parent = &client->dev;
+	indio_dev->dev.parent = dev;
 	indio_dev->channels = cm32181_channels;
 	indio_dev->num_channels = ARRAY_SIZE(cm32181_channels);
 	indio_dev->info = &cm32181_info;
-	indio_dev->name = id->name;
+	indio_dev->name = dev_name(dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = cm32181_reg_init(cm32181);
 	if (ret) {
-		dev_err(&client->dev,
-			"%s: register init failed\n",
-			__func__);
+		dev_err(dev, "%s: register init failed\n", __func__);
 		return ret;
 	}
 
-	ret = devm_iio_device_register(&client->dev, indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret) {
-		dev_err(&client->dev,
-			"%s: regist device failed\n",
-			__func__);
+		dev_err(dev, "%s: regist device failed\n", __func__);
 		return ret;
 	}
 
 	return 0;
 }
 
-static const struct i2c_device_id cm32181_id[] = {
-	{ "cm32181", 0 },
-	{ }
-};
-
-MODULE_DEVICE_TABLE(i2c, cm32181_id);
-
 static const struct of_device_id cm32181_of_match[] = {
+	{ .compatible = "capella,cm3218" },
 	{ .compatible = "capella,cm32181" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, cm32181_of_match);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id cm32181_acpi_match[] = {
+	{ "CPLM3218", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, cm32181_acpi_match);
+#endif
+
 static struct i2c_driver cm32181_driver = {
 	.driver = {
 		.name	= "cm32181",
-		.of_match_table = of_match_ptr(cm32181_of_match),
+		.acpi_match_table = ACPI_PTR(cm32181_acpi_match),
+		.of_match_table = cm32181_of_match,
 	},
-	.id_table       = cm32181_id,
-	.probe		= cm32181_probe,
+	.probe_new	= cm32181_probe,
 };
 
 module_i2c_driver(cm32181_driver);

drivers/iio/light/cm3232.c

···
 
 #include <linux/i2c.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/init.h>
···
 static struct i2c_driver cm3232_driver = {
 	.driver = {
 		.name	= "cm3232",
-		.of_match_table = of_match_ptr(cm3232_of_match),
+		.of_match_table = cm3232_of_match,
 #ifdef CONFIG_PM_SLEEP
 		.pm	= &cm3232_pm_ops,
 #endif

drivers/iio/light/gp2ap020a00f.c

···
 #include <linux/irq.h>
 #include <linux/irq_work.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
···
 
 MODULE_DEVICE_TABLE(i2c, gp2ap020a00f_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id gp2ap020a00f_of_match[] = {
 	{ .compatible = "sharp,gp2ap020a00f" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, gp2ap020a00f_of_match);
-#endif
 
 static struct i2c_driver gp2ap020a00f_driver = {
 	.driver = {
 		.name	= GP2A_I2C_NAME,
-		.of_match_table = of_match_ptr(gp2ap020a00f_of_match),
+		.of_match_table = gp2ap020a00f_of_match,
 	},
 	.probe		= gp2ap020a00f_probe,
 	.remove		= gp2ap020a00f_remove,

drivers/iio/light/hid-sensor-als.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum {
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&als_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&als_state->common_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		goto error_free_dev_mem;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&als_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
 error_free_dev_mem:
 	kfree(indio_dev->channels);
 	return ret;
···
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ALS);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&als_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
 	kfree(indio_dev->channels);
 
 	return 0;

drivers/iio/light/hid-sensor-prox.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 #define CHANNEL_SCAN_INDEX_PRESENCE 0
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&prox_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&prox_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		goto error_free_dev_mem;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&prox_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &prox_state->common_attributes);
 error_free_dev_mem:
 	kfree(indio_dev->channels);
 	return ret;
···
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PROX);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&prox_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &prox_state->common_attributes);
 	kfree(indio_dev->channels);
 
 	return 0;

drivers/iio/light/ltr501.c

···
 	int uscale;
 };
 
-static struct ltr501_gain ltr501_als_gain_tbl[] = {
+static const struct ltr501_gain ltr501_als_gain_tbl[] = {
 	{1, 0},
 	{0, 5000},
 };
 
-static struct ltr501_gain ltr559_als_gain_tbl[] = {
+static const struct ltr501_gain ltr559_als_gain_tbl[] = {
 	{1, 0},
 	{0, 500000},
 	{0, 250000},
···
 	{0, 10000},
 };
 
-static struct ltr501_gain ltr501_ps_gain_tbl[] = {
+static const struct ltr501_gain ltr501_ps_gain_tbl[] = {
 	{1, 0},
 	{0, 250000},
 	{0, 125000},
 	{0, 62500},
 };
 
-static struct ltr501_gain ltr559_ps_gain_tbl[] = {
+static const struct ltr501_gain ltr559_ps_gain_tbl[] = {
 	{0, 62500}, /* x16 gain */
 	{0, 31250}, /* x32 gain */
 	{0, 15625}, /* bits X1 are for x64 gain */
···
 
 struct ltr501_chip_info {
 	u8 partid;
-	struct ltr501_gain *als_gain;
+	const struct ltr501_gain *als_gain;
 	int als_gain_tbl_size;
-	struct ltr501_gain *ps_gain;
+	const struct ltr501_gain *ps_gain;
 	int ps_gain_tbl_size;
 	u8 als_mode_active;
 	u8 als_gain_mask;
···
 	return -EINVAL;
 }
 
-static int ltr501_als_read_samp_freq(struct ltr501_data *data,
+static int ltr501_als_read_samp_freq(const struct ltr501_data *data,
 				     int *val, int *val2)
 {
 	int ret, i;
···
 	return IIO_VAL_INT_PLUS_MICRO;
 }
 
-static int ltr501_ps_read_samp_freq(struct ltr501_data *data,
+static int ltr501_ps_read_samp_freq(const struct ltr501_data *data,
 				    int *val, int *val2)
 {
 	int ret, i;
···
 	return ret;
 }
 
-static int ltr501_als_read_samp_period(struct ltr501_data *data, int *val)
+static int ltr501_als_read_samp_period(const struct ltr501_data *data, int *val)
 {
 	int ret, i;
 
···
 	return IIO_VAL_INT;
 }
 
-static int ltr501_ps_read_samp_period(struct ltr501_data *data, int *val)
+static int ltr501_ps_read_samp_period(const struct ltr501_data *data, int *val)
 {
 	int ret, i;
 
···
 	return lux / 1000;
 }
 
-static int ltr501_drdy(struct ltr501_data *data, u8 drdy_mask)
+static int ltr501_drdy(const struct ltr501_data *data, u8 drdy_mask)
 {
 	int tries = 100;
 	int ret, status;
···
 }
 
 /* read int time in micro seconds */
-static int ltr501_read_it_time(struct ltr501_data *data, int *val, int *val2)
+static int ltr501_read_it_time(const struct ltr501_data *data,
+			       int *val, int *val2)
 {
 	int ret, index;
 
···
 	return IIO_VAL_INT_PLUS_MICRO;
 }
 
-static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2])
+static int ltr501_read_als(const struct ltr501_data *data, __le16 buf[2])
 {
 	int ret;
 
···
 				buf, 2 * sizeof(__le16));
 }
 
-static int ltr501_read_ps(struct ltr501_data *data)
+static int ltr501_read_ps(const struct ltr501_data *data)
 {
 	int ret, status;
 
···
 	return status;
 }
 
-static int ltr501_read_intr_prst(struct ltr501_data *data,
+static int ltr501_read_intr_prst(const struct ltr501_data *data,
 				 enum iio_chan_type type,
 				 int *val2)
 {
···
 	return -EINVAL;
 }
 
-static int ltr501_get_gain_index(struct ltr501_gain *gain, int size,
+static int ltr501_get_gain_index(const struct ltr501_gain *gain, int size,
 				 int val, int val2)
 {
 	int i;
···
 	return ret;
 }
 
-static int ltr501_read_thresh(struct iio_dev *indio_dev,
+static int ltr501_read_thresh(const struct iio_dev *indio_dev,
 			      const struct iio_chan_spec *chan,
 			      enum iio_event_type type,
 			      enum iio_event_direction dir,
 			      enum iio_event_info info,
 			      int *val, int *val2)
 {
-	struct ltr501_data *data = iio_priv(indio_dev);
+	const struct ltr501_data *data = iio_priv(indio_dev);
 	int ret, thresh_data;
 
 	switch (chan->type) {
···
 	}
 }
 
-static struct regmap_config ltr501_regmap_config = {
+static const struct regmap_config ltr501_regmap_config = {
 	.name =  LTR501_REGMAP_NAME,
 	.reg_bits = 8,
 	.val_bits = 8,

drivers/iio/light/opt3001.c

···
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/types.h>
···
 
 	.driver = {
 		.name = "opt3001",
-		.of_match_table = of_match_ptr(opt3001_of_match),
+		.of_match_table = opt3001_of_match,
 	},
 };
 

drivers/iio/light/si1133.c

···
 
 #include <linux/util_macros.h>
 
+#include <asm/unaligned.h>
+
 #define SI1133_REG_PART_ID		0x00
 #define SI1133_REG_REV_ID		0x01
 #define SI1133_REG_MFR_ID		0x02
···
 #define SI1133_LUX_OUTPUT_FRACTION	12
 #define SI1133_LUX_BUFFER_SIZE		9
 #define SI1133_MEASURE_BUFFER_SIZE	3
-
-#define SI1133_SIGN_BIT_INDEX 23
 
 static const int si1133_scale_available[] = {
 	1, 2, 4, 8, 16, 32, 64, 128};
···
 	if (err)
 		return err;
 
-	*val = sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2],
-			     SI1133_SIGN_BIT_INDEX);
+	*val = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
 
 	return err;
 }
···
 	if (err)
 		return err;
 
-	high_vis =
-		sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2],
-			      SI1133_SIGN_BIT_INDEX);
+	high_vis = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
 
-	low_vis =
-		sign_extend32((buffer[3] << 16) | (buffer[4] << 8) | buffer[5],
-			      SI1133_SIGN_BIT_INDEX);
+	low_vis = sign_extend32(get_unaligned_be24(&buffer[3]), 23);
 
-	ir = sign_extend32((buffer[6] << 16) | (buffer[7] << 8) | buffer[8],
-			   SI1133_SIGN_BIT_INDEX);
+	ir = sign_extend32(get_unaligned_be24(&buffer[6]), 23);
 
 	if (high_vis > SI1133_ADC_THRESHOLD || ir > SI1133_ADC_THRESHOLD)
 		lux = si1133_calc_polynomial(high_vis, ir,

drivers/iio/light/st_uvis25_i2c.c

···
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/regmap.h>
···
 	.driver = {
 		.name = "st_uvis25_i2c",
 		.pm = &st_uvis25_pm_ops,
-		.of_match_table = of_match_ptr(st_uvis25_i2c_of_match),
+		.of_match_table = st_uvis25_i2c_of_match,
 	},
 	.probe = st_uvis25_i2c_probe,
 	.id_table = st_uvis25_i2c_id_table,

drivers/iio/light/st_uvis25_spi.c

···
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/regmap.h>
···
 	.driver = {
 		.name = "st_uvis25_spi",
 		.pm = &st_uvis25_pm_ops,
-		.of_match_table = of_match_ptr(st_uvis25_spi_of_match),
+		.of_match_table = st_uvis25_spi_of_match,
 	},
 	.probe = st_uvis25_spi_probe,
 	.id_table = st_uvis25_spi_id_table,

drivers/iio/light/vcnl4000.c

···
  *
  * Copyright 2012 Peter Meerwald <[e-mail]>
  * Copyright 2019 Pursim SPC
+ * Copyright 2020 Mathieu Othacehe <[e-mail]>
  *
  * IIO driver for:
  *   VCNL4000/10/20 (7-bit I2C slave address 0x13)
···
  *
  * TODO:
  *   allow to adjust IR current
- *   proximity threshold and event handling
- *   periodic ALS/proximity measurement (VCNL4010/20)
- *   interrupts (VCNL4010/20/40, VCNL4200)
+ *   interrupts (VCNL4040, VCNL4200)
  */
 
 #include <linux/module.h>
···
 #include <linux/err.h>
 #include <linux/delay.h>
 #include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
 
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 
 #define VCNL4000_DRV_NAME "vcnl4000"
 #define VCNL4000_PROD_ID	0x01
···
 
 #define VCNL4000_COMMAND	0x80 /* Command register */
 #define VCNL4000_PROD_REV	0x81 /* Product ID and Revision ID */
+#define VCNL4010_PROX_RATE      0x82 /* Proximity rate */
 #define VCNL4000_LED_CURRENT	0x83 /* IR LED current for proximity mode */
 #define VCNL4000_AL_PARAM	0x84 /* Ambient light parameter register */
+#define VCNL4010_ALS_PARAM      0x84 /* ALS rate */
 #define VCNL4000_AL_RESULT_HI	0x85 /* Ambient light result register, MSB */
 #define VCNL4000_AL_RESULT_LO	0x86 /* Ambient light result register, LSB */
 #define VCNL4000_PS_RESULT_HI	0x87 /* Proximity result register, MSB */
 #define VCNL4000_PS_RESULT_LO	0x88 /* Proximity result register, LSB */
 #define VCNL4000_PS_MEAS_FREQ	0x89 /* Proximity test signal frequency */
+#define VCNL4010_INT_CTRL	0x89 /* Interrupt control */
 #define VCNL4000_PS_MOD_ADJ	0x8a /* Proximity modulator timing adjustment */
+#define VCNL4010_LOW_THR_HI     0x8a /* Low threshold, MSB */
+#define VCNL4010_LOW_THR_LO     0x8b /* Low threshold, LSB */
+#define VCNL4010_HIGH_THR_HI    0x8c /* High threshold, MSB */
+#define VCNL4010_HIGH_THR_LO    0x8d /* High threshold, LSB */
+#define VCNL4010_ISR		0x8e /* Interrupt status */
 
 #define VCNL4200_AL_CONF	0x00 /* Ambient light configuration */
 #define VCNL4200_PS_CONF1	0x03 /* Proximity configuration */
···
 #define VCNL4000_PS_RDY		BIT(5) /* proximity data ready? */
 #define VCNL4000_AL_OD		BIT(4) /* start on-demand ALS measurement */
 #define VCNL4000_PS_OD		BIT(3) /* start on-demand proximity measurement */
+#define VCNL4000_ALS_EN		BIT(2) /* start ALS measurement */
+#define VCNL4000_PROX_EN	BIT(1) /* start proximity measurement */
+#define VCNL4000_SELF_TIMED_EN	BIT(0) /* start self-timed measurement */
+
+/* Bit masks for interrupt registers. */
+#define VCNL4010_INT_THR_SEL	BIT(0) /* Select threshold interrupt source */
+#define VCNL4010_INT_THR_EN	BIT(1) /* Threshold interrupt type */
+#define VCNL4010_INT_ALS_EN	BIT(2) /* Enable on ALS data ready */
+#define VCNL4010_INT_PROX_EN	BIT(3) /* Enable on proximity data ready */
+
+#define VCNL4010_INT_THR_HIGH	0 /* High threshold exceeded */
+#define VCNL4010_INT_THR_LOW	1 /* Low threshold exceeded */
+#define VCNL4010_INT_ALS	2 /* ALS data ready */
+#define VCNL4010_INT_PROXIMITY	3 /* Proximity data ready */
+
+#define VCNL4010_INT_THR \
+	(BIT(VCNL4010_INT_THR_LOW) | BIT(VCNL4010_INT_THR_HIGH))
+#define VCNL4010_INT_DRDY \
+	(BIT(VCNL4010_INT_PROXIMITY) | BIT(VCNL4010_INT_ALS))
+
+static const int vcnl4010_prox_sampling_frequency[][2] = {
+	{1, 950000},
+	{3, 906250},
+	{7, 812500},
+	{16, 625000},
+	{31, 250000},
+	{62, 500000},
+	{125, 0},
+	{250, 0},
+};
 
 #define VCNL4000_SLEEP_DELAY_MS	2000 /* before we enter pm_runtime_suspend */
 
···
 
 struct vcnl4000_chip_spec {
 	const char *prod;
+	struct iio_chan_spec const *channels;
+	const int num_channels;
+	const struct iio_info *info;
+	bool irq_support;
 	int (*init)(struct vcnl4000_data *data);
 	int (*measure_light)(struct vcnl4000_data *data, int *val);
 	int (*measure_proximity)(struct vcnl4000_data *data, int *val);
···
 	return 0;
 };
 
+static int vcnl4000_read_data(struct vcnl4000_data *data, u8 data_reg, int *val)
+{
+	s32 ret;
+
+	ret = i2c_smbus_read_word_swapped(data->client, data_reg);
+	if (ret < 0)
+		return ret;
+
+	*val = ret;
+	return 0;
+}
+
+static int vcnl4000_write_data(struct vcnl4000_data *data, u8 data_reg, int val)
+{
+	if (val > U16_MAX)
+		return -ERANGE;
+
+	return i2c_smbus_write_word_swapped(data->client, data_reg, val);
+}
+
+
 static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
 				u8 rdy_mask, u8 data_reg, int *val)
 {
 	int tries = 20;
-	__be16 buf;
 	int ret;
 
 	mutex_lock(&data->vcnl4000_lock);
···
 		goto fail;
 	}
 
-	ret = i2c_smbus_read_i2c_block_data(data->client,
-		data_reg, sizeof(buf), (u8 *) &buf);
+	ret = vcnl4000_read_data(data, data_reg, val);
 	if (ret < 0)
 		goto fail;
 
 	mutex_unlock(&data->vcnl4000_lock);
-	*val = be16_to_cpu(buf);
 
 	return 0;
 
···
 	return vcnl4200_measure(data, &data->vcnl4200_ps, val);
 }
 
-static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
-	[VCNL4000] = {
-		.prod = "VCNL4000",
-		.init = vcnl4000_init,
-		.measure_light = vcnl4000_measure_light,
-		.measure_proximity = vcnl4000_measure_proximity,
-		.set_power_state = vcnl4000_set_power_state,
-	},
-	[VCNL4010] = {
-		.prod = "VCNL4010/4020",
-		.init = vcnl4000_init,
-		.measure_light = vcnl4000_measure_light,
-		.measure_proximity = vcnl4000_measure_proximity,
-		.set_power_state = vcnl4000_set_power_state,
-	},
-	[VCNL4040] = {
-		.prod = "VCNL4040",
-		.init = vcnl4200_init,
-		.measure_light = vcnl4200_measure_light,
-		.measure_proximity = vcnl4200_measure_proximity,
-		.set_power_state = vcnl4200_set_power_state,
-	},
-	[VCNL4200] = {
-		.prod = "VCNL4200",
-		.init = vcnl4200_init,
-		.measure_light = vcnl4200_measure_light,
-		.measure_proximity = vcnl4200_measure_proximity,
-		.set_power_state = vcnl4200_set_power_state,
-	},
-};
-
-static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev,
-					uintptr_t priv,
-					const struct iio_chan_spec *chan,
-					char *buf)
+static int vcnl4010_read_proxy_samp_freq(struct vcnl4000_data *data, int *val,
+					 int *val2)
 {
-	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
 
-	return sprintf(buf, "%u\n", data->near_level);
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_PROX_RATE);
+	if (ret < 0)
+		return ret;
+
+	if (ret >= ARRAY_SIZE(vcnl4010_prox_sampling_frequency))
+		return -EINVAL;
+
+	*val = vcnl4010_prox_sampling_frequency[ret][0];
+	*val2 = vcnl4010_prox_sampling_frequency[ret][1];
+
+	return 0;
 }
 
-static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = {
-	{
-		.name = "nearlevel",
-		.shared = IIO_SEPARATE,
-		.read = vcnl4000_read_near_level,
-	},
-	{ /* sentinel */ }
-};
+static bool vcnl4010_is_in_periodic_mode(struct vcnl4000_data *data)
+{
+	int ret;
 
-static const struct iio_chan_spec vcnl4000_channels[] = {
-	{
-		.type = IIO_LIGHT,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-			BIT(IIO_CHAN_INFO_SCALE),
-	}, {
-		.type = IIO_PROXIMITY,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-		.ext_info = vcnl4000_ext_info,
-	}
-};
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND);
+	if (ret < 0)
+		return false;
+
+	return !!(ret & VCNL4000_SELF_TIMED_EN);
+}
 
 static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on)
 {
···
 	}
 }
 
+static int vcnl4010_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_SCALE:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		/* Protect against event capture. */
+		if (vcnl4010_is_in_periodic_mode(data)) {
+			ret = -EBUSY;
+		} else {
+			ret = vcnl4000_read_raw(indio_dev, chan, val, val2,
+						mask);
+		}
+
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		switch (chan->type) {
+		case IIO_PROXIMITY:
+			ret = vcnl4010_read_proxy_samp_freq(data, val, val2);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (int *)vcnl4010_prox_sampling_frequency;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = 2 * ARRAY_SIZE(vcnl4010_prox_sampling_frequency);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_write_proxy_samp_freq(struct vcnl4000_data *data, int val,
+					  int val2)
+{
+	unsigned int i;
+	int index = -1;
+
+	for (i = 0; i < ARRAY_SIZE(vcnl4010_prox_sampling_frequency); i++) {
+		if (val == vcnl4010_prox_sampling_frequency[i][0] &&
+		    val2 == vcnl4010_prox_sampling_frequency[i][1]) {
+			index = i;
+			break;
+		}
+	}
+
+	if (index < 0)
+		return -EINVAL;
+
+	return i2c_smbus_write_byte_data(data->client, VCNL4010_PROX_RATE,
+					 index);
+}
+
+static int vcnl4010_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	/* Protect against event capture. */
+	if (vcnl4010_is_in_periodic_mode(data)) {
+		ret = -EBUSY;
+		goto end;
+	}
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		switch (chan->type) {
+		case IIO_PROXIMITY:
+			ret = vcnl4010_write_proxy_samp_freq(data, val, val2);
+			goto end;
+		default:
+			ret = -EINVAL;
+			goto end;
+		}
+	default:
+		ret = -EINVAL;
+		goto end;
+	}
+
+end:
+	iio_device_release_direct_mode(indio_dev);
+	return ret;
+}
+
+static int vcnl4010_read_event(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       enum iio_event_type type,
+			       enum iio_event_direction dir,
+			       enum iio_event_info info,
+			       int *val, int *val2)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			ret = vcnl4000_read_data(data, VCNL4010_HIGH_THR_HI,
+						 val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			ret = vcnl4000_read_data(data, VCNL4010_LOW_THR_HI,
+						 val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_write_event(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir,
+				enum iio_event_info info,
+				int val, int val2)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			ret = vcnl4000_write_data(data, VCNL4010_HIGH_THR_HI,
+						  val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			ret = vcnl4000_write_data(data, VCNL4010_LOW_THR_HI,
+						  val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static bool vcnl4010_is_thr_enabled(struct vcnl4000_data *data)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_INT_CTRL);
+	if (ret < 0)
+		return false;
+
+	return !!(ret & VCNL4010_INT_THR_EN);
+}
+
+static int vcnl4010_read_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (chan->type) {
+	case IIO_PROXIMITY:
+		return vcnl4010_is_thr_enabled(data);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
+	int icr;
+	int command;
+
+	if (state) {
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		/* Enable periodic measurement of proximity data. */
+		command = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
+
+		/*
+		 * Enable interrupts on threshold, for proximity data by
+		 * default.
+		 */
+		icr = VCNL4010_INT_THR_EN;
+	} else {
+		if (!vcnl4010_is_thr_enabled(data))
+			return 0;
+
+		command = 0;
+		icr = 0;
+	}
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
+					command);
+	if (ret < 0)
+		goto end;
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, icr);
+
+end:
+	if (state)
+		iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static int vcnl4010_write_event_config(struct iio_dev *indio_dev,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_type type,
+				       enum iio_event_direction dir,
+				       int state)
+{
+	switch (chan->type) {
+	case IIO_PROXIMITY:
+		return vcnl4010_config_threshold(indio_dev, state);
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev,
+					uintptr_t priv,
+					const struct iio_chan_spec *chan,
+					char *buf)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	return sprintf(buf, "%u\n", data->near_level);
+}
+
+static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = {
+	{
+		.name = "nearlevel",
+		.shared = IIO_SEPARATE,
+		.read = vcnl4000_read_near_level,
+	},
+	{ /* sentinel */ }
+};
+
+static const struct iio_event_spec vcnl4000_event_spec[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	}
+};
+
+static const struct iio_chan_spec vcnl4000_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE),
+	}, {
+		.type = IIO_PROXIMITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.ext_info = vcnl4000_ext_info,
+	}
+};
+
+static const struct iio_chan_spec vcnl4010_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.scan_index = -1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE),
+	}, {
+		.type = IIO_PROXIMITY,
+		.scan_index = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.event_spec = vcnl4000_event_spec,
+		.num_event_specs = ARRAY_SIZE(vcnl4000_event_spec),
+		.ext_info = vcnl4000_ext_info,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1),
+};
+
 static const struct iio_info vcnl4000_info = {
 	.read_raw = vcnl4000_read_raw,
 };
+
+static const struct iio_info vcnl4010_info = {
+	.read_raw = vcnl4010_read_raw,
+	.read_avail = vcnl4010_read_avail,
+	.write_raw = vcnl4010_write_raw,
+	.read_event_value = vcnl4010_read_event,
+	.write_event_value = vcnl4010_write_event,
+	.read_event_config = vcnl4010_read_event_config,
+	.write_event_config = vcnl4010_write_event_config,
+};
+
+static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
+	[VCNL4000] = {
+		.prod = "VCNL4000",
+		.init = vcnl4000_init,
+		.measure_light = vcnl4000_measure_light,
+		.measure_proximity = vcnl4000_measure_proximity,
+		.set_power_state = vcnl4000_set_power_state,
+		.channels = vcnl4000_channels,
+		.num_channels = ARRAY_SIZE(vcnl4000_channels),
+		.info = &vcnl4000_info,
+		.irq_support = false,
+	},
+	[VCNL4010] = {
+		.prod = "VCNL4010/4020",
+		.init = vcnl4000_init,
+		.measure_light = vcnl4000_measure_light,
+		.measure_proximity = vcnl4000_measure_proximity,
+		.set_power_state = vcnl4000_set_power_state,
+		.channels = vcnl4010_channels,
+		.num_channels = ARRAY_SIZE(vcnl4010_channels),
+		.info = &vcnl4010_info,
+		.irq_support = true,
+	},
+	[VCNL4040] = {
+		.prod = "VCNL4040",
+		.init = vcnl4200_init,
+		.measure_light = vcnl4200_measure_light,
+		.measure_proximity = vcnl4200_measure_proximity,
+		.set_power_state = vcnl4200_set_power_state,
+		.channels = vcnl4000_channels,
+		.num_channels = ARRAY_SIZE(vcnl4000_channels),
+		.info = &vcnl4000_info,
+		.irq_support = false,
+	},
+	[VCNL4200] = {
+		.prod = "VCNL4200",
+		.init = vcnl4200_init,
+		.measure_light = vcnl4200_measure_light,
+		.measure_proximity = vcnl4200_measure_proximity,
+		.set_power_state = vcnl4200_set_power_state,
+		.channels = vcnl4000_channels,
+		.num_channels = ARRAY_SIZE(vcnl4000_channels),
+		.info = &vcnl4000_info,
+		.irq_support = false,
+	},
+};
+
+static irqreturn_t vcnl4010_irq_thread(int irq, void *p)
+{
+	struct iio_dev *indio_dev = p;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	unsigned long isr;
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
+	if (ret < 0)
+		goto end;
+
+	isr = ret;
+
+	if (isr & VCNL4010_INT_THR) {
+		if (test_bit(VCNL4010_INT_THR_LOW, &isr)) {
+			iio_push_event(indio_dev,
+				       IIO_UNMOD_EVENT_CODE(
+					       IIO_PROXIMITY,
+					       1,
+					       IIO_EV_TYPE_THRESH,
+					       IIO_EV_DIR_FALLING),
+				       iio_get_time_ns(indio_dev));
+		}
+
+		if (test_bit(VCNL4010_INT_THR_HIGH, &isr)) {
+			iio_push_event(indio_dev,
+				       IIO_UNMOD_EVENT_CODE(
+					       IIO_PROXIMITY,
+					       1,
+					       IIO_EV_TYPE_THRESH,
+					       IIO_EV_DIR_RISING),
+				       iio_get_time_ns(indio_dev));
+		}
+
+		i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
+					  isr & VCNL4010_INT_THR);
+	}
+
+	if (isr & VCNL4010_INT_DRDY && iio_buffer_enabled(indio_dev))
+		iio_trigger_poll_chained(indio_dev->trig);
+
+end:
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t vcnl4010_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	const unsigned long *active_scan_mask = indio_dev->active_scan_mask;
+	u16 buffer[8] = {0}; /* 1x16-bit + ts */
+	bool data_read = false;
+	unsigned long isr;
+	int val = 0;
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
+	if (ret < 0)
+		goto end;
+
+	isr = ret;
+
+	if (test_bit(0, active_scan_mask)) {
+		if (test_bit(VCNL4010_INT_PROXIMITY, &isr)) {
+			ret = vcnl4000_read_data(data,
+						 VCNL4000_PS_RESULT_HI,
+						 &val);
+			if (ret < 0)
+				goto end;
+
+			buffer[0] = val;
+			data_read = true;
+		}
+	}
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
+					isr & VCNL4010_INT_DRDY);
+	if (ret < 0)
+		goto end;
+
+	if (!data_read)
+		goto end;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+					   iio_get_time_ns(indio_dev));
+
+end:
+	iio_trigger_notify_done(indio_dev->trig);
+	return IRQ_HANDLED;
+}
+
+static int vcnl4010_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
+	int cmd;
+
+	ret = iio_triggered_buffer_postenable(indio_dev);
+	if (ret)
+		return ret;
+
+	/* Do not enable the buffer if we are already capturing events. */
+	if (vcnl4010_is_in_periodic_mode(data)) {
+		ret = -EBUSY;
+		goto end;
+	}
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL,
+					VCNL4010_INT_PROX_EN);
+	if (ret < 0)
+		goto end;
+
+	cmd = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, cmd);
+	if (ret < 0)
+		goto end;
+
+	return 0;
+end:
+	iio_triggered_buffer_predisable(indio_dev);
+
+	return ret;
+}
+
+static int vcnl4010_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret, ret_disable;
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, 0);
+	if (ret < 0)
+		goto end;
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, 0);
+
+end:
+	ret_disable = iio_triggered_buffer_predisable(indio_dev);
+	if (ret == 0)
+		ret = ret_disable;
+
+	return ret;
+}
+
+static const struct iio_buffer_setup_ops vcnl4010_buffer_ops = {
+	.postenable = &vcnl4010_buffer_postenable,
+	.predisable = &vcnl4010_buffer_predisable,
+};
+
+static const struct iio_trigger_ops vcnl4010_trigger_ops = {
+	.validate_device = iio_trigger_validate_own_device,
+};
+
+static int vcnl4010_probe_trigger(struct iio_dev *indio_dev)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	struct i2c_client *client = data->client;
+	struct iio_trigger *trigger;
+
+	trigger = devm_iio_trigger_alloc(&client->dev, "%s-dev%d",
+					 indio_dev->name, indio_dev->id);
+	if (!trigger)
+		return -ENOMEM;
+
+	trigger->dev.parent = &client->dev;
+	trigger->ops = &vcnl4010_trigger_ops;
+	iio_trigger_set_drvdata(trigger, indio_dev);
+
+	return devm_iio_trigger_register(&client->dev, trigger);
+}
 
 static int vcnl4000_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
···
 		data->near_level = 0;
 
 	indio_dev->dev.parent = &client->dev;
-	indio_dev->info = &vcnl4000_info;
-	indio_dev->channels = vcnl4000_channels;
-	indio_dev->num_channels = ARRAY_SIZE(vcnl4000_channels);
+	indio_dev->info = data->chip_spec->info;
+	indio_dev->channels = data->chip_spec->channels;
+	indio_dev->num_channels = data->chip_spec->num_channels;
 	indio_dev->name = VCNL4000_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	if (client->irq && data->chip_spec->irq_support) {
+		ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev,
+						      NULL,
+						      vcnl4010_trigger_handler,
+						      &vcnl4010_buffer_ops);
+		if (ret < 0) {
+			dev_err(&client->dev,
+				"unable to setup iio triggered buffer\n");
+			return ret;
+		}
+
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL, vcnl4010_irq_thread,
+						IRQF_TRIGGER_FALLING |
+						IRQF_ONESHOT,
+						"vcnl4010_irq",
+						indio_dev);
+		if (ret < 0) {
+			dev_err(&client->dev, "irq request failed\n");
+			return ret;
+		}
+
+		ret = vcnl4010_probe_trigger(indio_dev);
+		if (ret < 0)
+			return ret;
+	}
 
 	ret = pm_runtime_set_active(&client->dev);
 	if (ret < 0)
···
 module_i2c_driver(vcnl4000_driver);
 
 MODULE_AUTHOR("Peter Meerwald <[e-mail]>");
+MODULE_AUTHOR("Mathieu Othacehe <[e-mail]>");
 MODULE_DESCRIPTION("Vishay VCNL4000 proximity/ambient light sensor driver");
 MODULE_LICENSE("GPL");

drivers/iio/light/vl6180.c

···
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
···
 static struct i2c_driver vl6180_driver = {
 	.driver = {
 		.name   = VL6180_DRV_NAME,
-		.of_match_table = of_match_ptr(vl6180_of_match),
+		.of_match_table = vl6180_of_match,
 	},
 	.probe  = vl6180_probe,
 	.id_table = vl6180_id,

drivers/iio/light/zopt2201.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #define ZOPT2201_DRV_NAME "zopt2201"
 
 /* Registers */
···
 		goto fail;
 	mutex_unlock(&data->lock);
 
-	return (buf[2] << 16) | (buf[1] << 8) | buf[0];
+	return get_unaligned_le24(&buf[0]);
 
 fail:
 	mutex_unlock(&data->lock);

drivers/iio/magnetometer/ak8974.c

···
 #define AK8974_WHOAMI_VALUE_AMI306 0x46
 #define AK8974_WHOAMI_VALUE_AMI305 0x47
 #define AK8974_WHOAMI_VALUE_AK8974 0x48
+#define AK8974_WHOAMI_VALUE_HSCDTD008A 0x49
 
 #define AK8974_DATA_X		0x10
 #define AK8974_DATA_Y		0x12
···
 #define AK8974_INT_CTRL_POL	BIT(3) /* 0 = active low; 1 = active high */
 #define AK8974_INT_CTRL_PULSE	BIT(1) /* 0 = latched; 1 = pulse (50 usec) */
 #define AK8974_INT_CTRL_RESDEF	(AK8974_INT_CTRL_XYZEN | AK8974_INT_CTRL_POL)
+
+/* HSCDTD008A-specific control register */
+#define HSCDTD008A_CTRL4	0x1E
+#define HSCDTD008A_CTRL4_MMD	BIT(7)	/* must be set to 1 */
+#define HSCDTD008A_CTRL4_RANGE	BIT(4)	/* 0 = 14-bit output; 1 = 15-bit output */
+#define HSCDTD008A_CTRL4_RESDEF	(HSCDTD008A_CTRL4_MMD | HSCDTD008A_CTRL4_RANGE)
 
 /* The AMI305 has elaborate FW version and serial number registers */
 #define AMI305_VER		0xE8
···
 	ret = regmap_write(ak8974->map, AK8974_CTRL3, AK8974_CTRL3_RESDEF);
 	if (ret)
 		return ret;
-	ret = regmap_write(ak8974->map, AK8974_INT_CTRL,
-			   AK8974_INT_CTRL_RESDEF);
-	if (ret)
-		return ret;
+	if (ak8974->variant != AK8974_WHOAMI_VALUE_HSCDTD008A) {
+		ret = regmap_write(ak8974->map, AK8974_INT_CTRL,
+				   AK8974_INT_CTRL_RESDEF);
+		if (ret)
+			return ret;
+	} else {
+		ret = regmap_write(ak8974->map, HSCDTD008A_CTRL4,
+				   HSCDTD008A_CTRL4_RESDEF);
+		if (ret)
+			return ret;
+	}
 
 	/* After reset, power off is default state */
 	return ak8974_set_power(ak8974, AK8974_PWR_OFF);
···
 		if (ret)
 			return ret;
 	}
+	if (ak8974->variant == AK8974_WHOAMI_VALUE_HSCDTD008A)
+		return 0;
 	ret = regmap_write(ak8974->map, AK8974_INT_CTRL, AK8974_INT_CTRL_POL);
 	if (ret)
 		return ret;
···
 		name = "ak8974";
 		dev_info(&ak8974->i2c->dev, "detected AK8974\n");
 		break;
+	case AK8974_WHOAMI_VALUE_HSCDTD008A:
+		name = "hscdtd008a";
+		dev_info(&ak8974->i2c->dev, "detected hscdtd008a\n");
+		break;
 	default:
 		dev_err(&ak8974->i2c->dev, "unsupported device (%02x) ",
 			whoami);
···
 	return 0;
 }
 
+static int ak8974_measure_channel(struct ak8974 *ak8974, unsigned long address,
+				  int *val)
+{
+	__le16 hw_values[3];
+	int ret;
+
+	pm_runtime_get_sync(&ak8974->i2c->dev);
+	mutex_lock(&ak8974->lock);
+
+	/*
+	 * We read all axes and discard all but one, for optimized
+	 * reading, use the triggered buffer.
+	 */
+	ret = ak8974_trigmeas(ak8974);
+	if (ret)
+		goto out_unlock;
+	ret = ak8974_getresult(ak8974, hw_values);
+	if (ret)
+		goto out_unlock;
+	/*
+	 * This explicit cast to (s16) is necessary as the measurement
+	 * is done in 2's complement with positive and negative values.
+	 * The follwing assignment to *val will then convert the signed
+	 * s16 value to a signed int value.
+	 */
+	*val = (s16)le16_to_cpu(hw_values[address]);
+out_unlock:
+	mutex_unlock(&ak8974->lock);
+	pm_runtime_mark_last_busy(&ak8974->i2c->dev);
+	pm_runtime_put_autosuspend(&ak8974->i2c->dev);
+
+	return ret;
+}
+
 static int ak8974_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2,
 			   long mask)
 {
 	struct ak8974 *ak8974 = iio_priv(indio_dev);
-	__le16 hw_values[3];
-	int ret = -EINVAL;
-
-	pm_runtime_get_sync(&ak8974->i2c->dev);
-	mutex_lock(&ak8974->lock);
+	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
 		if (chan->address > 2) {
 			dev_err(&ak8974->i2c->dev, "faulty channel address\n");
-			ret = -EIO;
-			goto out_unlock;
+			return -EIO;
 		}
-		ret = ak8974_trigmeas(ak8974);
+		ret = ak8974_measure_channel(ak8974, chan->address, val);
 		if (ret)
-			goto out_unlock;
-		ret = ak8974_getresult(ak8974, hw_values);
-		if (ret)
-			goto out_unlock;
-
-		/*
-		 * We read all axes and discard all but one, for optimized
-		 * reading, use the triggered buffer.
-		 */
-		*val = (s16)le16_to_cpu(hw_values[chan->address]);
-
-		ret = IIO_VAL_INT;
+			return ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		switch (ak8974->variant) {
+		case AK8974_WHOAMI_VALUE_AMI306:
+		case AK8974_WHOAMI_VALUE_AMI305:
+			/*
+			 * The datasheet for AMI305 and AMI306, page 6
+			 * specifies the range of the sensor to be
+			 * +/- 12 Gauss.
+			 */
+			*val = 12;
+			/*
+			 * 12 bits are used, +/- 2^11
+			 * [ -2048 .. 2047 ] (manual page 20)
+			 * [ 0xf800 .. 0x07ff ]
+			 */
+			*val2 = 11;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		case AK8974_WHOAMI_VALUE_HSCDTD008A:
+			/*
+			 * The datasheet for HSCDTF008A, page 3 specifies the
+			 * range of the sensor as +/- 2.4 mT per axis, which
+			 * corresponds to +/- 2400 uT = +/- 24 Gauss.
+			 */
+			*val = 24;
+			/*
+			 * 15 bits are used (set up in CTRL4), +/- 2^14
+			 * [ -16384 .. 16383 ] (manual page 24)
+			 * [ 0xc000 .. 0x3fff ]
+			 */
+			*val2 = 14;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		default:
+			/* GUESSING +/- 12 Gauss */
+			*val = 12;
+			/* GUESSING 12 bits ADC +/- 2^11 */
+			*val2 = 11;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		}
+		break;
+	default:
+		/* Unknown request */
+		break;
 	}
 
- out_unlock:
-	mutex_unlock(&ak8974->lock);
-	pm_runtime_mark_last_busy(&ak8974->i2c->dev);
-	pm_runtime_put_autosuspend(&ak8974->i2c->dev);
-
-	return ret;
+	return -EINVAL;
 }
 
 static void ak8974_fill_buffer(struct iio_dev *indio_dev)
···
 	{ },
 };
 
-#define AK8974_AXIS_CHANNEL(axis, index)				\
+#define AK8974_AXIS_CHANNEL(axis, index, bits)				\
 	{								\
 		.type = IIO_MAGN,					\
 		.modified = 1,						\
 		.channel2 = IIO_MOD_##axis,				\
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+			BIT(IIO_CHAN_INFO_SCALE),			\
 		.ext_info = ak8974_ext_info,				\
 		.address = index,					\
 		.scan_index = index,					\
 		.scan_type = {						\
 			.sign = 's',					\
-			.realbits = 16,					\
+			.realbits = bits,				\
 			.storagebits = 16,				\
 			.endianness = IIO_LE				\
 		},							\
 	}
 
-static const struct iio_chan_spec ak8974_channels[] = {
-	AK8974_AXIS_CHANNEL(X, 0),
-	AK8974_AXIS_CHANNEL(Y, 1),
-	AK8974_AXIS_CHANNEL(Z, 2),
+/*
+ * We have no datasheet for the AK8974 but we guess that its
+ * ADC is 12 bits. The AMI305 and AMI306 certainly has 12bit
+ * ADC.
+ */
+static const struct iio_chan_spec ak8974_12_bits_channels[] = {
+	AK8974_AXIS_CHANNEL(X, 0, 12),
+	AK8974_AXIS_CHANNEL(Y, 1, 12),
+	AK8974_AXIS_CHANNEL(Z, 2, 12),
+	IIO_CHAN_SOFT_TIMESTAMP(3),
+};
+
+/*
+ * The HSCDTD008A has 15 bits resolution the way we set it up
+ * in CTRL4.
+ */
+static const struct iio_chan_spec ak8974_15_bits_channels[] = {
+	AK8974_AXIS_CHANNEL(X, 0, 15),
+	AK8974_AXIS_CHANNEL(Y, 1, 15),
+	AK8974_AXIS_CHANNEL(Z, 2, 15),
 	IIO_CHAN_SOFT_TIMESTAMP(3),
 };
 
···
 	case AK8974_INT_CTRL:
 	case AK8974_INT_THRES:
 	case AK8974_INT_THRES + 1:
+		return true;
 	case AK8974_PRESET:
 	case AK8974_PRESET + 1:
-		return true;
+		return ak8974->variant != AK8974_WHOAMI_VALUE_HSCDTD008A;
 	case AK8974_OFFSET_X:
 	case AK8974_OFFSET_X + 1:
 	case AK8974_OFFSET_Y:
 	case AK8974_OFFSET_Y + 1:
 	case AK8974_OFFSET_Z:
 	case AK8974_OFFSET_Z + 1:
-		if (ak8974->variant == AK8974_WHOAMI_VALUE_AK8974)
-			return true;
-		return false;
+		return ak8974->variant == AK8974_WHOAMI_VALUE_AK8974 ||
+		       ak8974->variant == AK8974_WHOAMI_VALUE_HSCDTD008A;
 	case AMI305_OFFSET_X:
 	case AMI305_OFFSET_X + 1:
 	case AMI305_OFFSET_Y:
···
 	pm_runtime_put(&i2c->dev);
 
 	indio_dev->dev.parent = &i2c->dev;
-	indio_dev->channels = ak8974_channels;
-	indio_dev->num_channels = ARRAY_SIZE(ak8974_channels);
+	switch (ak8974->variant) {
+	case AK8974_WHOAMI_VALUE_AMI306:
+	case AK8974_WHOAMI_VALUE_AMI305:
+		indio_dev->channels = ak8974_12_bits_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ak8974_12_bits_channels);
+		break;
+	case AK8974_WHOAMI_VALUE_HSCDTD008A:
+		indio_dev->channels = ak8974_15_bits_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ak8974_15_bits_channels);
+		break;
+	default:
+		indio_dev->channels = ak8974_12_bits_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ak8974_12_bits_channels);
+		break;
+	}
 	indio_dev->info = &ak8974_info;
 	indio_dev->available_scan_masks = ak8974_scan_masks;
 	indio_dev->modes = INDIO_DIRECT_MODE;
···
 	{"ami305", 0 },
 	{"ami306", 0 },
 	{"ak8974", 0 },
+	{"hscdtd008a", 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ak8974_id);
 
 static const struct of_device_id ak8974_of_match[] = {
 	{ .compatible = "asahi-kasei,ak8974", },
+	{ .compatible = "alps,hscdtd008a", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ak8974_of_match);

drivers/iio/magnetometer/hid-sensor-magn-3d.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum magn_3d_channel {
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		return ret;
-	}
 	atomic_set(&magn_state->magn_flux_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&magn_state->magn_flux_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&magn_state->magn_flux_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &magn_state->magn_flux_attributes);
 	return ret;
 }
 
···
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&magn_state->magn_flux_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &magn_state->magn_flux_attributes);
 
 	return 0;
 }

drivers/iio/magnetometer/rm3100-core.c

···
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 
+#include <asm/unaligned.h>
+
 #include "rm3100.h"
 
 /* Cycle Count Registers. */
···
 		goto unlock_return;
 	mutex_unlock(&data->lock);
 
-	*val = sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2],
-			     23);
+	*val = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
 
 	return IIO_VAL_INT;
 

drivers/iio/orientation/hid-sensor-incl-3d.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum incl_3d_channel {
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&incl_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&incl_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		goto error_free_dev_mem;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&incl_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &incl_state->common_attributes);
 error_free_dev_mem:
 	kfree(indio_dev->channels);
 	return ret;
···
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_INCLINOMETER_3D);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&incl_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &incl_state->common_attributes);
 	kfree(indio_dev->channels);
 
 	return 0;

drivers/iio/orientation/hid-sensor-rotation.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 struct dev_rot_state {
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		return ret;
-	}
 	atomic_set(&rot_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&rot_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&rot_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &rot_state->common_attributes);
 	return ret;
 }
 
···
 
 	sensor_hub_remove_callback(hsdev, hsdev->usage);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&rot_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &rot_state->common_attributes);
 
 	return 0;
 }

drivers/iio/pressure/bmp280-core.c

···
 		+ (s32)2097152) * calib->H2 + 8192) >> 14);
 	var -= ((((var >> 15) * (var >> 15)) >> 7) * (s32)calib->H1) >> 4;
 
+	var = clamp_val(var, 0, 419430400);
+
 	return var >> 12;
 };
 

drivers/iio/pressure/hid-sensor-press.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 #define CHANNEL_SCAN_INDEX_PRESSURE 0
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&press_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&press_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		goto error_free_dev_mem;
 	}
 
 	ret = iio_device_register(indio_dev);
···
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&press_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
 error_free_dev_mem:
 	kfree(indio_dev->channels);
 	return ret;
···
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&press_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
 	kfree(indio_dev->channels);
 
 	return 0;

drivers/iio/pressure/hp206c.c

···
 #include <linux/util_macros.h>
 #include <linux/acpi.h>
 
+#include <asm/unaligned.h>
+
 /* I2C commands: */
 #define HP206C_CMD_SOFT_RST	0x06
 
···
 	int ret;
 	u8 values[3];
 
-	ret = i2c_smbus_read_i2c_block_data(client, cmd, 3, values);
+	ret = i2c_smbus_read_i2c_block_data(client, cmd, sizeof(values), values);
 	if (ret < 0)
 		return ret;
-	if (ret != 3)
+	if (ret != sizeof(values))
 		return -EIO;
-	return ((values[0] & 0xF) << 16) | (values[1] << 8) | (values[2]);
+	return get_unaligned_be24(&values[0]) & GENMASK(19, 0);
 }
 
 /* Spin for max 160ms until DEV_RDY is 1, or return error. */

drivers/iio/pressure/ms5611_i2c.c

···
 #include <linux/module.h>
 #include <linux/of_device.h>
 
+#include <asm/unaligned.h>
+
 #include "ms5611.h"
 
 static int ms5611_i2c_reset(struct device *dev)
···
 	if (ret < 0)
 		return ret;
 
-	*val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
+	*val = get_unaligned_be24(&buf[0]);
 
 	return 0;
 }

drivers/iio/pressure/ms5611_spi.c

···
 #include <linux/spi/spi.h>
 #include <linux/of_device.h>
 
+#include <asm/unaligned.h>
+
 #include "ms5611.h"
 
 static int ms5611_spi_reset(struct device *dev)
···
 	if (ret < 0)
 		return ret;
 
-	*val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
+	*val = get_unaligned_be24(&buf[0]);
 
 	return 0;
 }

drivers/iio/pressure/zpa2326.c

···
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
+#include <asm/unaligned.h>
 #include "zpa2326.h"
 
 /* 200 ms should be enough for the longest conversion time in one-shot mode. */
···
 	struct regmap *regs = ((struct zpa2326_private *)
 			       iio_priv(indio_dev))->regmap;
 	int            err;
+	u8             v[3];
 
 	switch (type) {
 	case IIO_PRESSURE:
 		zpa2326_dbg(indio_dev, "fetching raw pressure sample");
 
-		err = regmap_bulk_read(regs, ZPA2326_PRESS_OUT_XL_REG, value,
-				       3);
+		err = regmap_bulk_read(regs, ZPA2326_PRESS_OUT_XL_REG, v, sizeof(v));
 		if (err) {
 			zpa2326_warn(indio_dev, "failed to fetch pressure (%d)",
 				     err);
 			return err;
 		}
 
-		/* Pressure is a 24 bits wide little-endian unsigned int. */
-		*value = (((u8 *)value)[2] << 16) | (((u8 *)value)[1] << 8) |
-			 ((u8 *)value)[0];
+		*value = get_unaligned_le24(&v[0]);
 
 		return IIO_VAL_INT;
 

drivers/iio/temperature/hid-sensor-temperature.c

···
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/trigger_consumer.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 
···
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev,
-					&iio_pollfunc_store_time, NULL, NULL);
-	if (ret)
-		return ret;
-
 	atomic_set(&temp_st->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&temp_st->common_attributes);
 	if (ret)
···
 error_remove_callback:
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&temp_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &temp_st->common_attributes);
 	return ret;
 }
 
···
 	struct temperature_state *temp_st = iio_priv(indio_dev);
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE);
-	hid_sensor_remove_trigger(&temp_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &temp_st->common_attributes);
 
 	return 0;
 }

drivers/iio/temperature/max31856.c

···
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/util_macros.h>
+#include <asm/unaligned.h>
 #include <dt-bindings/iio/temperature/thermocouple.h>
 /*
  * The MSB of the register value determines whether the following byte will
···
 		if (ret)
 			return ret;
 		/* Skip last 5 dead bits of LTCBL */
-		*val = (reg_val[0] << 16 | reg_val[1] << 8 | reg_val[2]) >> 5;
+		*val = get_unaligned_be24(&reg_val[0]) >> 5;
 		/* Check 7th bit of LTCBH reg. value for sign*/
 		if (reg_val[0] & 0x80)
 			*val -= 0x80000;
···
 		/* Get Cold Junction Temp. offset register value */
 		offset_cjto = reg_val[0];
 		/* Get CJTH and CJTL value and skip last 2 dead bits of CJTL */
-		*val = (reg_val[1] << 8 | reg_val[2]) >> 2;
+		*val = get_unaligned_be16(&reg_val[1]) >> 2;
 		/* As per datasheet add offset into CJTH and CJTL */
 		*val += offset_cjto;
 		/* Check 7th bit of CJTH reg. value for sign */

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

···
 	.postdisable = ad5933_ring_postdisable,
 };
 
-static int ad5933_register_ring_funcs_and_init(struct iio_dev *indio_dev)
+static int ad5933_register_ring_funcs_and_init(struct device *dev,
+					       struct iio_dev *indio_dev)
 {
 	struct iio_buffer *buffer;
 
-	buffer = iio_kfifo_allocate();
+	buffer = devm_iio_kfifo_allocate(dev);
 	if (!buffer)
 		return -ENOMEM;
 
···
 	}
 }
 
+static void ad5933_reg_disable(void *data)
+{
+	struct ad5933_state *st = data;
+
+	regulator_disable(st->reg);
+}
+
+static void ad5933_clk_disable(void *data)
+{
+	struct ad5933_state *st = data;
+
+	clk_disable_unprepare(st->mclk);
+}
+
 static int ad5933_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
···
 		dev_err(&client->dev, "Failed to enable specified VDD supply\n");
 		return ret;
 	}
-	ret = regulator_get_voltage(st->reg);
 
+	ret = devm_add_action_or_reset(&client->dev, ad5933_reg_disable, st);
+	if (ret)
+		return ret;
+
+	ret = regulator_get_voltage(st->reg);
 	if (ret < 0)
-		goto error_disable_reg;
+		return ret;
 
 	st->vref_mv = ret / 1000;
 
 	st->mclk = devm_clk_get(&client->dev, "mclk");
-	if (IS_ERR(st->mclk) && PTR_ERR(st->mclk) != -ENOENT) {
-		ret = PTR_ERR(st->mclk);
-		goto error_disable_reg;
-	}
+	if (IS_ERR(st->mclk) && PTR_ERR(st->mclk) != -ENOENT)
+		return PTR_ERR(st->mclk);
 
 	if (!IS_ERR(st->mclk)) {
 		ret = clk_prepare_enable(st->mclk);
 		if (ret < 0)
-			goto error_disable_reg;
+			return ret;
+
+		ret = devm_add_action_or_reset(&client->dev,
+					       ad5933_clk_disable,
+					       st);
+		if (ret)
+			return ret;
+
 		ext_clk_hz = clk_get_rate(st->mclk);
 	}
 
···
 	indio_dev->channels = ad5933_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ad5933_channels);
 
-	ret = ad5933_register_ring_funcs_and_init(indio_dev);
+	ret = ad5933_register_ring_funcs_and_init(&client->dev, indio_dev);
 	if (ret)
-		goto error_disable_mclk;
+		return ret;
 
 	ret = ad5933_setup(st);
 	if (ret)
-		goto error_unreg_ring;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_unreg_ring;
-
-	return 0;
-
-error_unreg_ring:
-	iio_kfifo_free(indio_dev->buffer);
-error_disable_mclk:
-	clk_disable_unprepare(st->mclk);
-error_disable_reg:
-	regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad5933_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct ad5933_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_kfifo_free(indio_dev->buffer);
-	regulator_disable(st->reg);
-	clk_disable_unprepare(st->mclk);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id ad5933_id[] = {
···
 		.of_match_table = ad5933_of_match,
 	},
 	.probe = ad5933_probe,
-	.remove = ad5933_remove,
 	.id_table = ad5933_id,
 };
 module_i2c_driver(ad5933_driver);

include/linux/iio/imu/adis.h

···
  * @trig: IIO trigger object data
  * @data: ADIS chip variant specific data
  * @burst: ADIS burst transfer information
+ * @burst_extra_len: Burst extra length. Should only be used by devices that can
+ *		     dynamically change their burst mode length.
  * @state_lock: Lock used by the device to protect state
  * @msg: SPI message object
  * @xfer: SPI transfer objects to be used for a @msg
  * @current_page: Some ADIS devices have registers, this selects current page
+ * @irq_flag: IRQ handling flags as passed to request_irq()
  * @buffer: Data buffer for information read from the device
  * @tx: DMA safe TX buffer for SPI transfers
  * @rx: DMA safe RX buffer for SPI transfers
···
 
 	const struct adis_data	*data;
 	struct adis_burst	*burst;
-
+	unsigned int		burst_extra_len;
 	/**
 	 * The state_lock is meant to be used during operations that require
 	 * a sequence of SPI R/W in order to protect the SPI transfer
···
 	struct spi_message	msg;
 	struct spi_transfer	*xfer;
 	unsigned int		current_page;
+	unsigned long		irq_flag;
 	void			*buffer;
 
 	uint8_t			tx[10] ____cacheline_aligned;
···
 	return ret;
 }
 
+int __adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask,
+			    const u32 val, u8 size);
+/**
+ * adis_update_bits_base() - ADIS Update bits function - Locked version
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @mask: Bitmask to change
+ * @val: Value to be written
+ * @size: Size of the register to update
+ *
+ * Updates the desired bits of @reg in accordance with @mask and @val.
+ */
+static inline int adis_update_bits_base(struct adis *adis, unsigned int reg,
+					const u32 mask, const u32 val, u8 size)
+{
+	int ret;
+
+	mutex_lock(&adis->state_lock);
+	ret = __adis_update_bits_base(adis, reg, mask, val, size);
+	mutex_unlock(&adis->state_lock);
+	return ret;
+}
+
+/**
+ * adis_update_bits() - Wrapper macro for adis_update_bits_base - Locked version
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @mask: Bitmask to change
+ * @val: Value to be written
+ *
+ * This macro evaluates the sizeof of @val at compile time and calls
+ * adis_update_bits_base() accordingly. Be aware that using MACROS/DEFINES for
+ * @val can lead to undesired behavior if the register to update is 16bit.
+ */
+#define adis_update_bits(adis, reg, mask, val) ({			\
+	BUILD_BUG_ON(sizeof(val) == 1 || sizeof(val) == 8);		\
+	__builtin_choose_expr(sizeof(val) == 4,				\
+		adis_update_bits_base(adis, reg, mask, val, 4),         \
+		adis_update_bits_base(adis, reg, mask, val, 2));	\
+})
+
+/**
+ * adis_update_bits() - Wrapper macro for adis_update_bits_base
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @mask: Bitmask to change
+ * @val: Value to be written
+ *
+ * This macro evaluates the sizeof of @val at compile time and calls
+ * adis_update_bits_base() accordingly. Be aware that using MACROS/DEFINES for
+ * @val can lead to undesired behavior if the register to update is 16bit.
+ */
+#define __adis_update_bits(adis, reg, mask, val) ({			\
+	BUILD_BUG_ON(sizeof(val) == 1 || sizeof(val) == 8);		\
+	__builtin_choose_expr(sizeof(val) == 4,				\
+		__adis_update_bits_base(adis, reg, mask, val, 4),	\
+		__adis_update_bits_base(adis, reg, mask, val, 2));	\
+})
+
 int adis_enable_irq(struct adis *adis, bool enable);
 int __adis_check_status(struct adis *adis);
 int __adis_initial_startup(struct adis *adis);
···
  * @en			burst mode enabled
  * @reg_cmd		register command that triggers burst
  * @extra_len		extra length to account in the SPI RX buffer
+ * @burst_max_len	holds the maximum burst size when the device supports
+ *			more than one burst mode with different sizes
  */
 struct adis_burst {
 	bool		en;
 	unsigned int	reg_cmd;
-	unsigned int	extra_len;
+	const u32	extra_len;
+	const u32	burst_max_len;
 };
 
+int
+devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
+				   irq_handler_t trigger_handler);
 int adis_setup_buffer_and_trigger(struct adis *adis,
 	struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *));
 void adis_cleanup_buffer_and_trigger(struct adis *adis,
 	struct iio_dev *indio_dev);
 
+int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
 int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
 void adis_remove_trigger(struct adis *adis);
 
···
 	const unsigned long *scan_mask);
 
 #else /* CONFIG_IIO_BUFFER */
+
+static inline int
+devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
+				   irq_handler_t trigger_handler)
+{
+	return 0;
+}
 
 static inline int adis_setup_buffer_and_trigger(struct adis *adis,
 	struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *))
···
 static inline void adis_cleanup_buffer_and_trigger(struct adis *adis,
 	struct iio_dev *indio_dev)
 {
+}
+
+static inline int devm_adis_probe_trigger(struct adis *adis,
+					  struct iio_dev *indio_dev)
+{
+	return 0;
 }
 
 static inline int adis_probe_trigger(struct adis *adis,