Merge tag 'iio-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First set of new device support, features and cleanups for IIO in the 5.11 cycle

Usual mixed bag of new drivers / device support + cleanups etc with the
addition of a fairly big set of yaml conversions.

Txt to yaml format conversions.
In some cases dropped separate binding and moved to trivial devices (drop).

Listed by manufacturer
  - dht11 temperature(drop)
  - adi,ad2s90 adi,ad5272 adi,ad5592r adi,ad5758 adi,ad5933 adi,ad7303
    adi,adis16480 adi,adf4350
  - ams,as3935
  - asahi-kasei,ak8974
  - atmel,sama5d2-adc
  - avago,apds9300 avago,apds9960
  - bosch,bma180 bosch,bmc150_magn bosch,bme680 bosch,bmg180
  - brcm,iproc-static-adc
  - capella,cm36651
  - domintech,dmard06(drop)
  - fsl,mag3110 fsl,mma8452 fsl,vf610-dac
  - hoperf,hp03
  - honeywell,hmc5843
  - kionix,kxcjk1013
  - maxim,ds1803(drop) maxim,ds4424 maxim,max30100 maxim,max30102
    maxim,max31856 maxim,max31855k maxim,max44009
    maxim,max5481 maxim,max5821
  - meas,htu21(drop) meas,ms5367(drop) meas,ms5611 meas,tsys01(drop)
  - mediatek,mt2701-auxadc
  - melexis,mlx90614 melexis,mlx90632
  - memsic,mmc35240(drop)
  - microchip,mcp41010 microchip,mcp4131 microchip,mcp4725
  - murata,zap2326
  - nxp,fxas21002c nxp,lpc1850-dac
  - pni,rm3100
  - qcom,pm8018-adc qcom,spmi-iadc
  - renesas,isl29501 renesas,rcar-gyroadc
  - samsung,sensorhub-rinato
  - sensiron,sgp30
  - sentech,sx9500
  - sharp,gp2ap020a00f
  - st,hts221 st,lsm6dsx st,st-sensors(many!) st,uvis25 st,vcl53l0x st,vl6180
  - ti,adc084s021 ti,ads124s08
    ti,dac5571 ti,dac7311 ti,dac7512 ti,dac7612
    ti,hdc1000(drop) ti,palmas-gpadc ti,opt3001 ti,tmp07
  - upisemi,us51882
  - vishay,vcnl4035
  - x-powers,axp209

New device support
* adi,ad5685
  - Add support for AD5338R dual output 10-bit DAC
  - Add DT-binding doc.
* mediatek,mt6360
  - New driver for this SoC ADC with bindings and using new channel label
    support in the IIO core.
* st,lsm6dsx
  - Add support for LSM6DST

Core:
* Add "label" to device channels, provided via a new core callback. Including
  DT docs for when that is the source, and ABI docs.
* Add devm_iio_triggered_buffer_setup_ext to take extra attributes.
* dmaengine, unwrap use of iio_buffer_set_attrs()
* Drop iio_buffer_set_attrs()
* Centralize ioctl call handling. Later fix to ensure -EINVAL returned if
  no handler has run.
* Fix an issue with IIO_VAL_FRACTIONAL and negative values - doesn't affect
  any known existing drivers, but will impact a future one.
* kernel-doc fix in trigger.h
* file-ops ordering cleanup

Features
* semtech,sx9310
  - Add control of hardware gain, proximity thresholds, hysteresis and
    debounce.
  - Increase what information on hardware configuration can be provided
    via DT.

Cleanup and minor features
* adi,ad5685
  - Add of_match_table
* adi,ad7292
  - Drop pointless spi_set_drvdata() call
* adi,ad7298
  - Drop platform data and tidy up external reference config.
* adi,ad7303
  - Drop platform data handling as unused.
* adi,ad7768
  - Add new label attribute for channels provided from dt.
* adi,ad7887
  - devm_ usage in probe simplifying remove and error handling.
* adi,adis16201
  - Drop pointless spi_set_drvdata() call
* adi,adis16209
  - Drop pointless spi_set_drvdata() call
* adi,adis16240
  - White space fixup
* adi,adxl372
  - use new devm_iio_triggered-buffer_setup_ext()
* amlogic,meson-saradc
  - Drop pointless semicolon.
* amstaos,tsl2563
  - Put back i2c_device_id table as needed for greybus probing.
* atmel,at91_adc
  - Use of_device_get_match_data() instead of open coding it.
  - Constify some driver data
  - Add KCONFIG dep on CONFIG_OF and drop of_match_ptr()
  - Drop platform data as mostly dead code.
  - Tidy up reference voltage logic
* atmel-sama5d2
  - Drop a pointless semicolon
  - Merge buffer and trigger init into a separate function
  - Use new devm_iio_triggered_buff_setup_ext()
* avago,apds9960
  - Drop a pointless semicolon
* bosch,bmc150
  - Drop a pointless semicolon
  - Use new iio_triggered_buffer_setup_ext()
* bosch,bmp280
  - Drop a pointless semicolon
* fsl,mma8452
  - Constification
* (google),cros_ec
  - Use new devm_iio_triggered_buffer_setup_ext()
* hid-sensors
  - Use new iio_triggered_buffer_setup_ext()
* ingenic,adc
  - Drop a pointless semicolon
* invensense,icm426xx
  - Fix MAINTAINERS entry missing :
* mediatek,mt6577_audxac
  - Add binding doc for mt8516 compatible with mt8173
* motorola,cpcap-adc
  - Fix an implicit fallthrough marking that clang needs to avoid warning.
* samsung,exynos-adc
  - Stop relying on users counter form input device in ISR.
* st,lsm6dsx
  - add vdd and vddio regulator control (including binding update)
* st,stm32-adc
  - Tidy up code for dma transfers.
  - Adapt clock duty cycle for proper functioning. Note no known problems
    with existing boards.
* st,vl53l0x-i2c
  - Put back i2c_device_id table as needed for greybus probing.
* vishay,vcnl4035
  - Put back i2c_device_id table as needed for greybus probing.

* tag 'iio-for-5.11a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (126 commits)
  dt-bindings:iio:adc:x-powers,axp209-adc: txt to yaml conversion
  dt-bindings:iio:adc:renesas,rcar-gyroadc: txt to yaml conversion.
  dt-bindings:iio:adc:atmel,sama5d2-adc: txt to yaml conversion
  dt-bindings:iio:magnetometer:pni,rm3100: txt to yaml conversion.
  dt-bindings:iio:magnetometer:honeywell,hmc5843: txt to yaml format conversion
  dt-bindings:iio:magnetometer:bosch,bmc150_magn: txt to yaml conversion.
  dt-bindings:iio:magnetometer:asahi-kasei,ak8974: txt to yaml format conversion
  dt-bindings:iio:magnetometer:fsl,mag3110: txt to yaml conversion
  dt-bindings:iio:light:st,vl6180: txt to yaml format conversion.
  dt-bindings:iio:light:vishay,vcnl4035: txt to yaml conversion
  dt-bindings:iio:light:st,uvis25: txt to yaml conversion for this UV sensor
  dt-bindings:iio:light:upisemi,us51882: txt to yaml conversion.
  dt-bindings:iio:light:ti,opt3001: txt to yaml conversion
  dt-bindings:iio:light:maxim,max44009: txt to yaml conversion.
  dt-bindings:iio:light:sharp,gp2ap020a00f: txt to yaml conversion.
  dt-bindings:iio:light:capella,cm36651: txt to yaml conversion.
  dt-bindings:iio:light:avago,apds9960: txt to yaml conversion
  dt-bindings:iio:light:avago,apds9300: txt to yaml conversion.
  dt-bindings:iio:imu:st,lsm6dsx: txt to yaml conversion
  dt-bindings:iio:imu:adi,adis16480: txt to yaml conversion
  ...

9 files changed, 25 insertions, 103 deletions

diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index fbba4093f06c..8febc23f5f26 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -11,9 +11,6 @@
 
 struct iio_buffer;
 
-void iio_buffer_set_attrs(struct iio_buffer *buffer,
-			 const struct attribute **attrs);
-
 int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
 
 /**
diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h
index f2e94196d31f..07c5a8e52ca8 100644
--- a/include/linux/iio/iio-opaque.h
+++ b/include/linux/iio/iio-opaque.h
@@ -11,6 +11,7 @@
  * @channel_attr_list:		keep track of automatically created channel
  *				attributes
  * @chan_attr_group:		group for all attrs in base directory
+ * @ioctl_handlers:		ioctl handlers registered with the core handler
  * @debugfs_dentry:		device specific debugfs dentry
  * @cached_reg_addr:		cached register address for debugfs reads
  * @read_buf:			read buffer to be used for the initial reg read
@@ -22,6 +23,7 @@ struct iio_dev_opaque {
 	struct list_head		buffer_list;
 	struct list_head		channel_attr_list;
 	struct attribute_group		chan_attr_group;
+	struct list_head		ioctl_handlers;
 #if defined(CONFIG_DEBUG_FS)
 	struct dentry			*debugfs_dentry;
 	unsigned			cached_reg_addr;
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index f015fa185253..e4a9822e6495 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -362,6 +362,8 @@ struct iio_trigger; /* forward declaration */
  *			and max. For lists, all possible values are enumerated.
  * @write_raw:		function to write a value to the device.
  *			Parameters are the same as for read_raw.
+ * @read_label:		function to request label name for a specified label,
+ *			for better channel identification.
  * @write_raw_get_fmt:	callback function to query the expected
  *			format/precision. If not set by the driver, write_raw
  *			returns IIO_VAL_INT_PLUS_MICRO.
@@ -420,6 +422,10 @@ struct iio_info {
 			 int val2,
 			 long mask);
 
+	int (*read_label)(struct iio_dev *indio_dev,
+			 struct iio_chan_spec const *chan,
+			 char *label);
+
 	int (*write_raw_get_fmt)(struct iio_dev *indio_dev,
 			 struct iio_chan_spec const *chan,
 			 long mask);
diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
index cad8325903f9..f930c4ccf378 100644
--- a/include/linux/iio/trigger.h
+++ b/include/linux/iio/trigger.h
@@ -97,7 +97,7 @@ static inline struct iio_trigger *iio_trigger_get(struct iio_trigger *trig)
 }
 
 /**
- * iio_device_set_drvdata() - Set trigger driver data
+ * iio_trigger_set_drvdata() - Set trigger driver data
  * @trig: IIO trigger structure
  * @data: Driver specific data
  *
diff --git a/include/linux/iio/triggered_buffer.h b/include/linux/iio/triggered_buffer.h
index e99c91799359..7f154d1f8739 100644
--- a/include/linux/iio/triggered_buffer.h
+++ b/include/linux/iio/triggered_buffer.h
@@ -4,19 +4,28 @@
 
 #include <linux/interrupt.h>
 
+struct attribute;
 struct iio_dev;
 struct iio_buffer_setup_ops;
 
-int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
+int iio_triggered_buffer_setup_ext(struct iio_dev *indio_dev,
 	irqreturn_t (*h)(int irq, void *p),
 	irqreturn_t (*thread)(int irq, void *p),
-	const struct iio_buffer_setup_ops *setup_ops);
+	const struct iio_buffer_setup_ops *setup_ops,
+	const struct attribute **buffer_attrs);
 void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev);
 
-int devm_iio_triggered_buffer_setup(struct device *dev,
-				    struct iio_dev *indio_dev,
-				    irqreturn_t (*h)(int irq, void *p),
-				    irqreturn_t (*thread)(int irq, void *p),
-				    const struct iio_buffer_setup_ops *ops);
+#define iio_triggered_buffer_setup(indio_dev, h, thread, setup_ops)		\
+	iio_triggered_buffer_setup_ext((indio_dev), (h), (thread), (setup_ops), NULL)
+
+int devm_iio_triggered_buffer_setup_ext(struct device *dev,
+					struct iio_dev *indio_dev,
+					irqreturn_t (*h)(int irq, void *p),
+					irqreturn_t (*thread)(int irq, void *p),
+					const struct iio_buffer_setup_ops *ops,
+					const struct attribute **buffer_attrs);
+
+#define devm_iio_triggered_buffer_setup(dev, indio_dev, h, thread, setup_ops)	\
+	devm_iio_triggered_buffer_setup_ext((dev), (indio_dev), (h), (thread), (setup_ops), NULL)
 
 #endif
diff --git a/include/linux/platform_data/ad7298.h b/include/linux/platform_data/ad7298.h
deleted file mode 100644
index 3e0ffe2d5d3d..000000000000
--- a/include/linux/platform_data/ad7298.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * AD7298 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- */
-
-#ifndef __LINUX_PLATFORM_DATA_AD7298_H__
-#define __LINUX_PLATFORM_DATA_AD7298_H__
-
-/**
- * struct ad7298_platform_data - Platform data for the ad7298 ADC driver
- * @ext_ref: Whether to use an external reference voltage.
- **/
-struct ad7298_platform_data {
-	bool ext_ref;
-};
-
-#endif /* IIO_ADC_AD7298_H_ */
diff --git a/include/linux/platform_data/ad7303.h b/include/linux/platform_data/ad7303.h
deleted file mode 100644
index c2bd0a13bea1..000000000000
--- a/include/linux/platform_data/ad7303.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Analog Devices AD7303 DAC driver
- *
- * Copyright 2013 Analog Devices Inc.
- */
-
-#ifndef __IIO_ADC_AD7303_H__
-#define __IIO_ADC_AD7303_H__
-
-/**
- * struct ad7303_platform_data - AD7303 platform data
- * @use_external_ref: If set to true use an external voltage reference connected
- * to the REF pin, otherwise use the internal reference derived from Vdd.
- */
-struct ad7303_platform_data {
-	bool use_external_ref;
-};
-
-#endif
diff --git a/include/linux/platform_data/ad7887.h b/include/linux/platform_data/ad7887.h
index 732af46b2d16..9b4dca6ae70b 100644
--- a/include/linux/platform_data/ad7887.h
+++ b/include/linux/platform_data/ad7887.h
@@ -13,13 +13,9 @@
  *	second input channel, and Vref is internally connected to Vdd. If set to
  *	false the device is used in single channel mode and AIN1/Vref is used as
  *	VREF input.
- * @use_onchip_ref: Whether to use the onchip reference. If set to true the
- *	internal 2.5V reference is used. If set to false a external reference is
- *	used.
  */
 struct ad7887_platform_data {
 	bool en_dual;
-	bool use_onchip_ref;
 };
 
 #endif /* IIO_ADC_AD7887_H_ */
diff --git a/include/linux/platform_data/at91_adc.h b/include/linux/platform_data/at91_adc.h
deleted file mode 100644
index f20eaeb827ce..000000000000
--- a/include/linux/platform_data/at91_adc.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2011 Free Electrons
- */
-
-#ifndef _AT91_ADC_H_
-#define _AT91_ADC_H_
-
-enum atmel_adc_ts_type {
-	ATMEL_ADC_TOUCHSCREEN_NONE = 0,
-	ATMEL_ADC_TOUCHSCREEN_4WIRE = 4,
-	ATMEL_ADC_TOUCHSCREEN_5WIRE = 5,
-};
-
-/**
- * struct at91_adc_trigger - description of triggers
- * @name:		name of the trigger advertised to the user
- * @value:		value to set in the ADC's trigger setup register
-			to enable the trigger
- * @is_external:	Does the trigger rely on an external pin?
- */
-struct at91_adc_trigger {
-	const char	*name;
-	u8		value;
-	bool		is_external;
-};
-
-/**
- * struct at91_adc_data - platform data for ADC driver
- * @channels_used:		channels in use on the board as a bitmask
- * @startup_time:		startup time of the ADC in microseconds
- * @trigger_list:		Triggers available in the ADC
- * @trigger_number:		Number of triggers available in the ADC
- * @use_external_triggers:	does the board has external triggers availables
- * @vref:			Reference voltage for the ADC in millivolts
- * @touchscreen_type:		If a touchscreen is connected, its type (4 or 5 wires)
- */
-struct at91_adc_data {
-	unsigned long			channels_used;
-	u8				startup_time;
-	struct at91_adc_trigger		*trigger_list;
-	u8				trigger_number;
-	bool				use_external_triggers;
-	u16				vref;
-	enum atmel_adc_ts_type		touchscreen_type;
-};
-
-extern void __init at91_add_device_adc(struct at91_adc_data *data);
-#endif