Merge tag 'iio-for-6.17a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: New device support, features, late breaking fixes and cleanup for 6.17

The normal mixed bag. A few more fixes than usual as I failed to send
them out earlier.

New device support
==================

adi,ad4080
- New driver for this high speed ADC. Includes extensions to iio-backends
  necessary to support filter config, variable data lands and data
  alignment control.
adi,ad4170-4
- New driver for this 24-bit very feature rich ADC suited for weigh scale
  and thermocouple applications.
adi,ad7405
- New driver for this single channel isolated ADC with backend support
  (adi-axi-adc)
google,cros_ec_activity
- Add activity detection to the existing set of cros_ec drivers covering
  both human body and significant motion detection.
mediatek,mt6359
- Add support for MT6363 and MT6373 PMIC Auxiliary ADCs.
nicera,d3-323-aa
- New driver for this configurable Passive InfraRed sensor.

Device ID only
==============

mediatek,mt7981-auxadc
- Add ID to mt2701 driver as fully compatible with mt7986-auxadc.
rohm,bu79100g
- Add ID to ad7476 driver as fully compatible with TI ADS7866.

Features
========
Core
- New in_voltageY_convdelay to allow for devices to control timing
  offsets between sampling different channels.
adi,ad-sigma-delta-library
- Support SPI offload (later fix for missing Kconfig dependency)
adi,ad4851
- SPI 3-wire support.
adi,ad7606
- Power supply control.
- convdelay and calibbias support for calibration purposes.
- gain calibration support based on external filter resistance provided
  from device tree.
adi,ad7768-1
- Add output regulator for VCM output, typically used for preconditioning
  circuits.
- Add gpio controller for the 4 GPIOs.
- Multiple scan type support to enable 16-bit modes.
- Support synchronization over SPI.
- Filter type and oversampling ratio control.
- Low pass filter cut off read only attribute.
adi,adxl313
- FIFO support
- DC activity, inactivity detection with power-save on inactivity
- AC coupled activity detection
- Documentation for this complex driver.
- debugfs register access.
adi,adxl345
- Sampling frequency and sensor range controls.
bosch,bmi270
- Add step counter support.
invensense,icm42600
- Wake on motion support.

Cleanup and fixes
=================

backend
- Drop unused parameter from iio_backend_ovesampling_ratio_set()
docs
- Fix ABI docs around I and Q modifiers.
treewide
- Switch remaining drives to use maple tree regcache.
- Drop use of DRIVER_NAME style definitions when only used in one
  place.
- Drop unused export.h includes.
- Use = { } in place of memset in various drivers.
- Constify various info structures and related.
- Switch some drivers from array of chip_info structures to individual
  named structures.
adi,ad-sigma_delta library
- Fix over allocation of scan buffer. (bits/bytes confusion)
- Sort includes and apply iwyu principles to ensure sensible set.
- Use u8 instead of uint8_t
- Replace hard coded type sizes with sizeof() and BITS_TO_BYTES() as
  appropriate.
- Factor out setting of read address to reduce duplication.
- Switch to buffer predisable so error handling on buffer enable
  functions correctly (balanced against postenable).
adi,ad4000
- Don't use sift_right() on an unsigned value.
adi,ad7173
- Add missing check on spi_setup() succeeding.
- Simplify clock enable disable code using devm_clk_get_enabled()
- Fix channel index for syscalib_mode
- Fix number of configuration slots for some devics.
- Fix the channel used for calibration.
- Fix setting ODR up in probe.
adi,ad7380
- Drop unused oversampling_ratio getter function call as value never
  used.
adi,ad7606
- Exit if invalid dt_schema encountered rather than carrying on with
  unknown config.
adi,ad7768-1
- Ensure SYNC_IN pulse is long enough.
- Switch sampling_frequency_available to read_avail() callback.
adi,ada4250
- Ensuring a dma-safe buffer for regmap_bulk_read()
- Use a local dev variable to simplify code
- Relax chip ID matching to allow for fallback dt compatibles.
- Make use of devm_regulator_get_enabled_read_voltage() to replace
  equivalent code.
- Shuffle elements around in struct to improve logical groupings and
  reduce holes.
- Use dev_err_probe()
adi,adxl313
- Use regcache to reduce traffic.
- Factor out enabling of measurement.
adi,adxl345
- Drop irq from struct as only used locally in code
- Simplify measure enable function using regmap_update_bits()
- Replace some magic numbers by units.h defines
- Simplify interrupt mapping code
- Simplify FIFO read out.
adi,axi-dac
- Factor out code to check for bus free to reduce duplication.
avago,apds9306
- Use a helper to get register address in both get and set functions.
bosch,bmi160+bmi270
- Ensure triggers suspended and resumed correctly.
bosch,bmo055
- Fix theoretical OOB acces to hw_xlate array.
freescale,vf610
- Drop -ENOMEM error message as plenty of existing prints if memory
  allocation fails.
- Use dev_err_probe() and devm_clk_geT_enabled() to simplify probe().
kionix,kx022a
- Apply include what you use principles to includes.
invensense,itg3200
- Add missing dt-binding for this gyroscope.
invensense,icm42600
- Switch from int64_t and similar to s64 and other kernel types.
- Simplify arrangement of DMA safe buffers and potentially reduce
  structure size a little.
invensense,mpu6050
- Reduce duplication in aux read/write code.
- Use sysfs_emit() to replace scnprintf()
murata,irsd200
- Drop duplicate printing of ret in dev_err_probe()
nxp,lpc3220-adc
- Add missing clocks property to dt-binding.
st,spear600
- Convert dt-binding that got left behind in staging to yaml in the main
  tree.
st,stm32-adc
- Use dev_fwnode() rather than directly accessing the of_node.
vti,sca3000
- Use direct returns instead of gotos where simple.

Various other minor typo and white space fixes.

* tag 'iio-for-6.17a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (201 commits)
  iio: adc: ad_sigma_delta: Select IIO_BUFFER_DMAENGINE and SPI_OFFLOAD
  iio: adc: ad7173: fix setting ODR in probe
  iio: adc: ad7173: fix calibration channel
  iio: adc: ad7173: fix num_slots
  iio: adc: ad7173: fix channels index for syscalib_mode
  iio: adc: ad_sigma_delta: change to buffer predisable
  iio: ABI: fix correctness of I and Q modifiers
  iio: Add driver for Nicera D3-323-AA PIR sensor
  dt-bindings: iio: proximity: Add Nicera D3-323-AA PIR sensor
  dt-bindings: vendor-prefixes: Add Nicera
  iio: dac: vf610: Simplify with devm_clk_get_enabled()
  iio: adc: vf610: Simplify with dev_err_probe
  iio: adc: vf610: Drop -ENOMEM error message
  iio: imu: bno055: make bno055_sysfs_attr const
  iio: imu: bno055: fix OOB access of hw_xlate array
  dt-bindings: iio: adc: Add support for MT7981
  iio: accel: kionix-kx022a: Apply approximate iwyu principles to includes
  iio: adc: ad4170-4: Add support for weigh scale, thermocouple, and RTD sens
  iio: adc: ad4170-4: Add support for internal temperature sensor
  iio: adc: ad4170-4: Add GPIO controller support
  ...

5 files changed, 69 insertions, 8 deletions

diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h
index f242b285081b..6e70a412e218 100644
--- a/include/linux/iio/adc/ad_sigma_delta.h
+++ b/include/linux/iio/adc/ad_sigma_delta.h
@@ -31,6 +31,8 @@ struct ad_sigma_delta;
 struct device;
 struct gpio_desc;
 struct iio_dev;
+struct spi_offload;
+struct spi_offload_trigger;
 
 /**
  * struct ad_sigma_delta_info - Sigma Delta driver specific callbacks and options
@@ -47,6 +49,10 @@ struct iio_dev;
  * @has_registers: true if the device has writable and readable registers, false
  *		if there is just one read-only sample data shift register.
  * @has_named_irqs: Set to true if there is more than one IRQ line.
+ * @supports_spi_offload: Set to true if the driver supports SPI offload. Often
+ *		special considerations are needed for scan_type and other channel
+ *		info, so individual drivers have to set this to let the core
+ *		code know that it can use SPI offload if it is available.
  * @addr_shift: Shift of the register address in the communications register.
  * @read_mask: Mask for the communications register having the read bit set.
  * @status_ch_mask: Mask for the channel number stored in status register.
@@ -65,6 +71,7 @@ struct ad_sigma_delta_info {
 	int (*postprocess_sample)(struct ad_sigma_delta *, unsigned int raw_sample);
 	bool has_registers;
 	bool has_named_irqs;
+	bool supports_spi_offload;
 	unsigned int addr_shift;
 	unsigned int read_mask;
 	unsigned int status_ch_mask;
@@ -94,7 +101,7 @@ struct ad_sigma_delta {
 	bool			bus_locked;
 	bool			keep_cs_asserted;
 
-	uint8_t			comm;
+	u8			comm;
 
 	const struct ad_sigma_delta_info *info;
 	unsigned int		active_slots;
@@ -105,7 +112,11 @@ struct ad_sigma_delta {
 	bool			status_appended;
 	/* map slots to channels in order to know what to expect from devices */
 	unsigned int		*slots;
-	uint8_t			*samples_buf;
+	struct spi_message	sample_msg;
+	struct spi_transfer	sample_xfer[2];
+	u8			*samples_buf;
+	struct spi_offload	*offload;
+	struct spi_offload_trigger *offload_trigger;
 
 	/*
 	 * DMA (thus cache coherency maintenance) requires the
@@ -114,10 +125,16 @@ struct ad_sigma_delta {
 	 * 'rx_buf' is up to 32 bits per sample + 64 bit timestamp,
 	 * rounded to 16 bytes to take into account padding.
 	 */
-	uint8_t				tx_buf[4] __aligned(IIO_DMA_MINALIGN);
-	uint8_t				rx_buf[16] __aligned(8);
+	u8				tx_buf[4] __aligned(IIO_DMA_MINALIGN);
+	u8				rx_buf[16] __aligned(8);
+	u8				sample_addr;
 };
 
+static inline bool ad_sigma_delta_has_spi_offload(struct ad_sigma_delta *sd)
+{
+	return sd->offload != NULL;
+}
+
 static inline int ad_sigma_delta_set_channel(struct ad_sigma_delta *sd,
 	unsigned int channel)
 {
@@ -177,7 +194,7 @@ static inline int ad_sigma_delta_postprocess_sample(struct ad_sigma_delta *sd,
 	return 0;
 }
 
-void ad_sd_set_comm(struct ad_sigma_delta *sigma_delta, uint8_t comm);
+void ad_sd_set_comm(struct ad_sigma_delta *sigma_delta, u8 comm);
 int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
 	unsigned int size, unsigned int val);
 int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h
index e59d909cb659..7f815f3fed6a 100644
--- a/include/linux/iio/backend.h
+++ b/include/linux/iio/backend.h
@@ -76,6 +76,14 @@ enum iio_backend_interface_type {
 	IIO_BACKEND_INTERFACE_MAX
 };
 
+enum iio_backend_filter_type {
+	IIO_BACKEND_FILTER_TYPE_DISABLED,
+	IIO_BACKEND_FILTER_TYPE_SINC1,
+	IIO_BACKEND_FILTER_TYPE_SINC5,
+	IIO_BACKEND_FILTER_TYPE_SINC5_PLUS_COMP,
+	IIO_BACKEND_FILTER_TYPE_MAX
+};
+
 /**
  * struct iio_backend_ops - operations structure for an iio_backend
  * @enable: Enable backend.
@@ -101,6 +109,9 @@ enum iio_backend_interface_type {
  * @read_raw: Read a channel attribute from a backend device
  * @debugfs_print_chan_status: Print channel status into a buffer.
  * @debugfs_reg_access: Read or write register value of backend.
+ * @filter_type_set: Set filter type.
+ * @interface_data_align: Perform the data alignment process.
+ * @num_lanes_set: Set the number of lanes enabled.
  * @ddr_enable: Enable interface DDR (Double Data Rate) mode.
  * @ddr_disable: Disable interface DDR (Double Data Rate) mode.
  * @data_stream_enable: Enable data stream.
@@ -144,7 +155,7 @@ struct iio_backend_ops {
 				  enum iio_backend_interface_type *type);
 	int (*data_size_set)(struct iio_backend *back, unsigned int size);
 	int (*oversampling_ratio_set)(struct iio_backend *back,
-				      unsigned int ratio);
+				      unsigned int chan, unsigned int ratio);
 	int (*read_raw)(struct iio_backend *back,
 			struct iio_chan_spec const *chan, int *val, int *val2,
 			long mask);
@@ -153,6 +164,10 @@ struct iio_backend_ops {
 					 size_t len);
 	int (*debugfs_reg_access)(struct iio_backend *back, unsigned int reg,
 				  unsigned int writeval, unsigned int *readval);
+	int (*filter_type_set)(struct iio_backend *back,
+			       enum iio_backend_filter_type type);
+	int (*interface_data_align)(struct iio_backend *back, u32 timeout_us);
+	int (*num_lanes_set)(struct iio_backend *back, unsigned int num_lanes);
 	int (*ddr_enable)(struct iio_backend *back);
 	int (*ddr_disable)(struct iio_backend *back);
 	int (*data_stream_enable)(struct iio_backend *back);
@@ -195,6 +210,10 @@ int iio_backend_data_sample_trigger(struct iio_backend *back,
 int devm_iio_backend_request_buffer(struct device *dev,
 				    struct iio_backend *back,
 				    struct iio_dev *indio_dev);
+int iio_backend_filter_type_set(struct iio_backend *back,
+				enum iio_backend_filter_type type);
+int iio_backend_interface_data_align(struct iio_backend *back, u32 timeout_us);
+int iio_backend_num_lanes_set(struct iio_backend *back, unsigned int num_lanes);
 int iio_backend_ddr_enable(struct iio_backend *back);
 int iio_backend_ddr_disable(struct iio_backend *back);
 int iio_backend_data_stream_enable(struct iio_backend *back);
@@ -209,6 +228,7 @@ int iio_backend_interface_type_get(struct iio_backend *back,
 				   enum iio_backend_interface_type *type);
 int iio_backend_data_size_set(struct iio_backend *back, unsigned int size);
 int iio_backend_oversampling_ratio_set(struct iio_backend *back,
+				       unsigned int chan,
 				       unsigned int ratio);
 int iio_backend_read_raw(struct iio_backend *back,
 			 struct iio_chan_spec const *chan, int *val, int *val2,
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index e72167b96d27..bb966abcde53 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -126,5 +126,6 @@ extern const struct dev_pm_ops cros_ec_sensors_pm_ops;
 
 /* List of extended channel specification for all sensors. */
 extern const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[];
+extern const struct iio_chan_spec_ext_info cros_ec_sensors_limited_info[];
 
 #endif  /* __CROS_EC_SENSORS_CORE_H */
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index d89982c98368..ad2761efcc83 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -69,6 +69,7 @@ enum iio_chan_info_enum {
 	IIO_CHAN_INFO_CALIBAMBIENT,
 	IIO_CHAN_INFO_ZEROPOINT,
 	IIO_CHAN_INFO_TROUGH,
+	IIO_CHAN_INFO_CONVDELAY,
 };
 
 #endif /* _IIO_TYPES_H_ */
diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index 1f4e4f2b89bb..c19b404e3d8d 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -2388,6 +2388,12 @@ enum motionsense_command {
 	 */
 	MOTIONSENSE_CMD_SENSOR_SCALE = 18,
 
+	/*
+	 * Activity management
+	 * Retrieve current status of given activity.
+	 */
+	MOTIONSENSE_CMD_GET_ACTIVITY = 20,
+
 	/* Number of motionsense sub-commands. */
 	MOTIONSENSE_NUM_CMDS
 };
@@ -2447,6 +2453,11 @@ enum motionsensor_orientation {
 	MOTIONSENSE_ORIENTATION_UNKNOWN = 4,
 };
 
+struct ec_response_activity_data {
+	uint8_t activity; /* motionsensor_activity */
+	uint8_t state;
+} __ec_todo_packed;
+
 struct ec_response_motion_sensor_data {
 	/* Flags for each sensor. */
 	uint8_t flags;
@@ -2460,8 +2471,7 @@ struct ec_response_motion_sensor_data {
 			uint32_t    timestamp;
 		};
 		struct __ec_todo_unpacked {
-			uint8_t     activity; /* motionsensor_activity */
-			uint8_t     state;
+			struct ec_response_activity_data activity_data;
 			int16_t     add_info[2];
 		};
 	};
@@ -2494,6 +2504,7 @@ enum motionsensor_activity {
 	MOTIONSENSE_ACTIVITY_SIG_MOTION = 1,
 	MOTIONSENSE_ACTIVITY_DOUBLE_TAP = 2,
 	MOTIONSENSE_ACTIVITY_ORIENTATION = 3,
+	MOTIONSENSE_ACTIVITY_BODY_DETECTION = 4,
 };
 
 struct ec_motion_sense_activity {
@@ -2671,6 +2682,7 @@ struct ec_params_motion_sense {
 			uint32_t max_data_vector;
 		} fifo_read;
 
+		/* Used for MOTIONSENSE_CMD_SET_ACTIVITY */
 		struct ec_motion_sense_activity set_activity;
 
 		/* Used for MOTIONSENSE_CMD_LID_ANGLE */
@@ -2716,6 +2728,12 @@ struct ec_params_motion_sense {
 			 */
 			int16_t hys_degree;
 		} tablet_mode_threshold;
+
+		/* Used for MOTIONSENSE_CMD_GET_ACTIVITY */
+		struct __ec_todo_unpacked {
+			uint8_t sensor_num;
+			uint8_t activity;  /* enum motionsensor_activity */
+		} get_activity;
 	};
 } __ec_todo_packed;
 
@@ -2833,6 +2851,10 @@ struct ec_response_motion_sense {
 			uint16_t hys_degree;
 		} tablet_mode_threshold;
 
+		/* USED for MOTIONSENSE_CMD_GET_ACTIVITY. */
+		struct __ec_todo_unpacked {
+			uint8_t     state;
+		} get_activity;
 	};
 } __ec_todo_packed;