Merge tag 'staging-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver updates from Greg KH:
 "Here is the big set of staging and IIO driver updates for 5.13-rc1.

  Lots of little churn in here, and some larger churn as well. Major
  things are:

   - removal of wimax drivers, no one has this hardware anymore for this
     failed "experiment".

   - removal of the Google gasket driver, turns out no one wanted to
     maintain it or cares about it anymore, so they asked for it to be
     removed.

   - comedi finally moves out of the staging directory into drivers/comedi

     This is one of the oldest kernel subsystems around, being created
     in the 2.0 kernel days, and was one of the first things added to
     drivers/staging/ when that was created over 15 years ago.

     It should have been moved out of staging a long time ago, it's well
     maintained and used by loads of different devices in the real world
     every day. Nice to see this finally happen.

   - so many tiny coding style cleanups it's not funny.

     Perfect storm of at least 2 different intern project application
     deadlines combined to provide a huge number of new contributions in
     this area from people learning how to do kernel development. Great
     job to everyone involved here.

  There's also the normal updates for IIO drivers with new IIO drivers
  and updates all over that subsystem.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (907 commits)
  staging: octeon: Use 'for_each_child_of_node'
  Staging: rtl8723bs: rtw_xmit: fixed tabbing issue
  staging: rtl8188eu: remove unused function parameters
  staging: rtl8188eu: cmdThread is a task_struct
  staging: rtl8188eu: remove constant variable and dead code
  staging: rtl8188eu: change bLeisurePs' type to bool
  staging: rtl8723bs: remove empty #ifdef block
  staging: rtl8723bs: remove unused DBG_871X_LEVEL macro declarations
  staging: rtl8723bs: split too long line
  staging: rtl8723bs: fix indentation in if block
  staging: rtl8723bs: fix code indent issue
  staging: rtl8723bs: replace DBG_871X_LEVEL logs with netdev_*()
  staging: rtl8192e: indent statement properly
  staging: rtl8723bs: Remove led_blink_hdl() and everything related
  staging: comedi: move out of staging directory
  staging: rtl8723bs: remove sdio_drv_priv structure
  staging: rtl8723bs: remove unused argument in function
  staging: rtl8723bs: remove DBG_871X_SEL_NL macro declaration
  staging: rtl8723bs: replace DBG_871X_SEL_NL with netdev_dbg()
  staging: rtl8723bs: fix indentation issue introduced by long line split
  ...

19 files changed, 100 insertions, 27 deletions

diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index 763802b2b8f9..c27329e2a5ad 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -231,6 +231,7 @@ struct hid_sensor_common {
 	struct hid_sensor_hub_attribute_info report_state;
 	struct hid_sensor_hub_attribute_info power_state;
 	struct hid_sensor_hub_attribute_info sensitivity;
+	struct hid_sensor_hub_attribute_info sensitivity_rel;
 	struct hid_sensor_hub_attribute_info report_latency;
 	struct work_struct work;
 };
@@ -248,11 +249,17 @@ static inline int hid_sensor_convert_exponent(int unit_expo)
 
 int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
 					u32 usage_id,
-					struct hid_sensor_common *st);
+					struct hid_sensor_common *st,
+					const u32 *sensitivity_addresses,
+					u32 sensitivity_addresses_len);
 int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st,
 					int val1, int val2);
+int hid_sensor_write_raw_hyst_rel_value(struct hid_sensor_common *st, int val1,
+					int val2);
 int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st,
 					int *val1, int *val2);
+int hid_sensor_read_raw_hyst_rel_value(struct hid_sensor_common *st,
+				       int *val1, int *val2);
 int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st,
 					int val1, int val2);
 int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st,
diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
index 3bbdbccc5805..ac631159403a 100644
--- a/include/linux/hid-sensor-ids.h
+++ b/include/linux/hid-sensor-ids.h
@@ -149,6 +149,7 @@
 /* Per data field properties */
 #define HID_USAGE_SENSOR_DATA_MOD_NONE					0x00
 #define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS		0x1000
+#define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_REL_PCT            0xE000
 
 /* Power state enumerations */
 #define HID_USAGE_SENSOR_PROP_POWER_STATE_UNDEFINED_ENUM	0x200850
diff --git a/include/linux/iio/adc/adi-axi-adc.h b/include/linux/iio/adc/adi-axi-adc.h
index c5d48e1c2d36..52620e5b8052 100644
--- a/include/linux/iio/adc/adi-axi-adc.h
+++ b/include/linux/iio/adc/adi-axi-adc.h
@@ -15,7 +15,7 @@ struct iio_chan_spec;
  * struct adi_axi_adc_chip_info - Chip specific information
  * @name		Chip name
  * @id			Chip ID (usually product ID)
- * @channels		Channel specifications of type @struct axi_adc_chan_spec
+ * @channels		Channel specifications of type @struct iio_chan_spec
  * @num_channels	Number of @channels
  * @scale_table		Supported scales by the chip; tuples of 2 ints
  * @num_scales		Number of scales in the table
diff --git a/include/linux/iio/buffer-dmaengine.h b/include/linux/iio/buffer-dmaengine.h
index 5b502291d6a4..5c355be89814 100644
--- a/include/linux/iio/buffer-dmaengine.h
+++ b/include/linux/iio/buffer-dmaengine.h
@@ -7,10 +7,11 @@
 #ifndef __IIO_DMAENGINE_H__
 #define __IIO_DMAENGINE_H__
 
-struct iio_buffer;
+struct iio_dev;
 struct device;
 
-struct iio_buffer *devm_iio_dmaengine_buffer_alloc(struct device *dev,
-						   const char *channel);
+int devm_iio_dmaengine_buffer_setup(struct device *dev,
+				    struct iio_dev *indio_dev,
+				    const char *channel);
 
 #endif
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index 8febc23f5f26..b6928ac5c63d 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -41,7 +41,7 @@ static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
 bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
 				   const unsigned long *mask);
 
-void iio_device_attach_buffer(struct iio_dev *indio_dev,
-			      struct iio_buffer *buffer);
+int iio_device_attach_buffer(struct iio_dev *indio_dev,
+			     struct iio_buffer *buffer);
 
 #endif /* _IIO_BUFFER_GENERIC_H_ */
diff --git a/include/linux/iio/buffer_impl.h b/include/linux/iio/buffer_impl.h
index a63dc07b7350..245b32918ae1 100644
--- a/include/linux/iio/buffer_impl.h
+++ b/include/linux/iio/buffer_impl.h
@@ -6,6 +6,8 @@
 
 #ifdef CONFIG_IIO_BUFFER
 
+#include <uapi/linux/iio/buffer.h>
+
 struct iio_dev;
 struct iio_buffer;
 
@@ -72,6 +74,9 @@ struct iio_buffer {
 	/** @length: Number of datums in buffer. */
 	unsigned int length;
 
+	/** @flags: File ops flags including busy flag. */
+	unsigned long flags;
+
 	/**  @bytes_per_datum: Size of individual datum including timestamp. */
 	size_t bytes_per_datum;
 
@@ -97,17 +102,14 @@ struct iio_buffer {
 	/* @scan_timestamp: Does the scan mode include a timestamp. */
 	bool scan_timestamp;
 
-	/* @scan_el_dev_attr_list: List of scan element related attributes. */
-	struct list_head scan_el_dev_attr_list;
-
-	/* @buffer_group: Attributes of the buffer group. */
-	struct attribute_group buffer_group;
+	/* @buffer_attr_list: List of buffer attributes. */
+	struct list_head buffer_attr_list;
 
 	/*
-	 * @scan_el_group: Attribute group for those attributes not
-	 * created from the iio_chan_info array.
+	 * @buffer_group: Attributes of the new buffer group.
+	 * Includes scan elements attributes.
 	 */
-	struct attribute_group scan_el_group;
+	struct attribute_group buffer_group;
 
 	/* @attrs: Standard attributes of the buffer. */
 	const struct attribute **attrs;
@@ -115,6 +117,9 @@ struct iio_buffer {
 	/* @demux_bounce: Buffer for doing gather from incoming scan. */
 	void *demux_bounce;
 
+	/* @attached_entry: Entry in the devices list of buffers attached by the driver. */
+	struct list_head attached_entry;
+
 	/* @buffer_list: Entry in the devices list of current buffers. */
 	struct list_head buffer_list;
 
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index c9b80be82440..7ce8a8adad58 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -96,8 +96,7 @@ struct platform_device;
 int cros_ec_sensors_core_init(struct platform_device *pdev,
 			      struct iio_dev *indio_dev, bool physical_device,
 			      cros_ec_sensors_capture_t trigger_capture,
-			      cros_ec_sensorhub_push_data_cb_t push_data,
-			      bool has_hw_fifo);
+			      cros_ec_sensorhub_push_data_cb_t push_data);
 
 irqreturn_t cros_ec_sensors_capture(int irq, void *p);
 int cros_ec_sensors_push_data(struct iio_dev *indio_dev,
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
index 0a90ba8fa1bb..5fa5957586cf 100644
--- a/include/linux/iio/consumer.h
+++ b/include/linux/iio/consumer.h
@@ -242,6 +242,21 @@ int iio_read_channel_average_raw(struct iio_channel *chan, int *val);
 int iio_read_channel_processed(struct iio_channel *chan, int *val);
 
 /**
+ * iio_read_channel_processed_scale() - read and scale a processed value
+ * @chan:		The channel being queried.
+ * @val:		Value read back.
+ * @scale:		Scale factor to apply during the conversion
+ *
+ * Returns an error code or 0.
+ *
+ * This function will read a processed value from a channel. This will work
+ * like @iio_read_channel_processed() but also scale with an additional
+ * scale factor while attempting to minimize any precision loss.
+ */
+int iio_read_channel_processed_scale(struct iio_channel *chan, int *val,
+				     unsigned int scale);
+
+/**
  * iio_write_channel_attribute() - Write values to the device attribute.
  * @chan:	The channel being queried.
  * @val:	Value being written.
diff --git a/include/linux/iio/dac/mcp4725.h b/include/linux/iio/dac/mcp4725.h
index e9801c8d49c0..1f7e53c506b6 100644
--- a/include/linux/iio/dac/mcp4725.h
+++ b/include/linux/iio/dac/mcp4725.h
@@ -15,7 +15,7 @@
  * @vref_buffered: Controls buffering of the external reference voltage.
  *
  * Vref related settings are available only on MCP4756. See
- * Documentation/devicetree/bindings/iio/dac/mcp4725.txt for more information.
+ * Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml for more information.
  */
 struct mcp4725_platform_data {
 	bool use_vref;
diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h
index 07c5a8e52ca8..32addd5e790e 100644
--- a/include/linux/iio/iio-opaque.h
+++ b/include/linux/iio/iio-opaque.h
@@ -7,11 +7,18 @@
  * struct iio_dev_opaque - industrial I/O device opaque information
  * @indio_dev:			public industrial I/O device information
  * @event_interface:		event chrdevs associated with interrupt lines
+ * @attached_buffers:		array of buffers statically attached by the driver
+ * @attached_buffers_cnt:	number of buffers in the array of statically attached buffers
+ * @buffer_ioctl_handler:	ioctl() handler for this IIO device's buffer interface
  * @buffer_list:		list of all buffers currently attached
  * @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
+ * @groups:			attribute groups
+ * @groupcounter:		index of next attribute group
+ * @legacy_scan_el_group:	attribute group for legacy scan elements attribute group
+ * @legacy_buffer_group:	attribute group for legacy buffer attributes group
  * @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
@@ -20,10 +27,17 @@
 struct iio_dev_opaque {
 	struct iio_dev			indio_dev;
 	struct iio_event_interface	*event_interface;
+	struct iio_buffer		**attached_buffers;
+	unsigned int			attached_buffers_cnt;
+	struct iio_ioctl_handler	*buffer_ioctl_handler;
 	struct list_head		buffer_list;
 	struct list_head		channel_attr_list;
 	struct attribute_group		chan_attr_group;
 	struct list_head		ioctl_handlers;
+	const struct attribute_group	**groups;
+	int				groupcounter;
+	struct attribute_group		legacy_scan_el_group;
+	struct attribute_group		legacy_buffer_group;
 #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 e4a9822e6495..f2d65e2e88b6 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -518,8 +518,6 @@ struct iio_buffer_setup_ops {
  * @setup_ops:		[DRIVER] callbacks to call before and after buffer
  *			enable/disable
  * @chrdev:		[INTERN] associated character device
- * @groups:		[INTERN] attribute groups
- * @groupcounter:	[INTERN] index of next attribute group
  * @flags:		[INTERN] file ops related flags including busy flag.
  * @priv:		[DRIVER] reference to driver's private information
  *			**MUST** be accessed **ONLY** via iio_priv() helper
@@ -556,9 +554,6 @@ struct iio_dev {
 	struct mutex			info_exist_lock;
 	const struct iio_buffer_setup_ops	*setup_ops;
 	struct cdev			chrdev;
-#define IIO_MAX_GROUPS 6
-	const struct attribute_group	*groups[IIO_MAX_GROUPS + 1];
-	int				groupcounter;
 
 	unsigned long			flags;
 	void				*priv;
@@ -698,7 +693,7 @@ static inline void *iio_priv(const struct iio_dev *indio_dev)
 void iio_device_free(struct iio_dev *indio_dev);
 struct iio_dev *devm_iio_device_alloc(struct device *parent, int sizeof_priv);
 __printf(2, 3)
-struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
+struct iio_trigger *devm_iio_trigger_alloc(struct device *parent,
 					   const char *fmt, ...);
 /**
  * iio_buffer_enabled() - helper function to test if the buffer is enabled
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index 04e96d688ba9..f9b728d490b1 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -428,6 +428,16 @@ static inline int adis_initial_startup(struct adis *adis)
 	return ret;
 }
 
+static inline void adis_dev_lock(struct adis *adis)
+{
+	mutex_lock(&adis->state_lock);
+}
+
+static inline void adis_dev_unlock(struct adis *adis)
+{
+	mutex_unlock(&adis->state_lock);
+}
+
 int adis_single_conversion(struct iio_dev *indio_dev,
 	const struct iio_chan_spec *chan, unsigned int error_mask,
 	int *val);
diff --git a/include/linux/iio/kfifo_buf.h b/include/linux/iio/kfifo_buf.h
index 1fc1efa7799d..ccd2ceae7b25 100644
--- a/include/linux/iio/kfifo_buf.h
+++ b/include/linux/iio/kfifo_buf.h
@@ -3,11 +3,20 @@
 #define __LINUX_IIO_KFIFO_BUF_H__
 
 struct iio_buffer;
+struct iio_buffer_setup_ops;
+struct iio_dev;
 struct device;
 
 struct iio_buffer *iio_kfifo_allocate(void);
 void iio_kfifo_free(struct iio_buffer *r);
 
-struct iio_buffer *devm_iio_kfifo_allocate(struct device *dev);
+int devm_iio_kfifo_buffer_setup_ext(struct device *dev,
+				    struct iio_dev *indio_dev,
+				    int mode_flags,
+				    const struct iio_buffer_setup_ops *setup_ops,
+				    const struct attribute **buffer_attrs);
+
+#define devm_iio_kfifo_buffer_setup(dev, indio_dev, mode_flags, setup_ops)	\
+	devm_iio_kfifo_buffer_setup_ext((dev), (indio_dev), (mode_flags), (setup_ops), NULL)
 
 #endif
diff --git a/include/linux/iio/sysfs.h b/include/linux/iio/sysfs.h
index b532c875bc24..e51fba66de4b 100644
--- a/include/linux/iio/sysfs.h
+++ b/include/linux/iio/sysfs.h
@@ -9,6 +9,7 @@
 #ifndef _INDUSTRIAL_IO_SYSFS_H_
 #define _INDUSTRIAL_IO_SYSFS_H_
 
+struct iio_buffer;
 struct iio_chan_spec;
 
 /**
@@ -17,12 +18,14 @@ struct iio_chan_spec;
  * @address:	associated register address
  * @l:		list head for maintaining list of dynamically created attrs
  * @c:		specification for the underlying channel
+ * @buffer:	the IIO buffer to which this attribute belongs to (if any)
  */
 struct iio_dev_attr {
 	struct device_attribute dev_attr;
 	u64 address;
 	struct list_head l;
 	struct iio_chan_spec const *c;
+	struct iio_buffer *buffer;
 };
 
 #define to_iio_dev_attr(_dev_attr)				\
diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
index 055890b6ffcf..096f68dd2e0c 100644
--- a/include/linux/iio/trigger.h
+++ b/include/linux/iio/trigger.h
@@ -161,7 +161,8 @@ void iio_trigger_poll_chained(struct iio_trigger *trig);
 
 irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private);
 
-__printf(1, 2) struct iio_trigger *iio_trigger_alloc(const char *fmt, ...);
+__printf(2, 3)
+struct iio_trigger *iio_trigger_alloc(struct device *parent, const char *fmt, ...);
 void iio_trigger_free(struct iio_trigger *trig);
 
 /**
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 1e3ed6f55bca..84b3f8175cc6 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -16,6 +16,7 @@ enum iio_event_info {
 	IIO_EV_INFO_PERIOD,
 	IIO_EV_INFO_HIGH_PASS_FILTER_3DB,
 	IIO_EV_INFO_LOW_PASS_FILTER_3DB,
+	IIO_EV_INFO_TIMEOUT,
 };
 
 #define IIO_VAL_INT 1
@@ -50,6 +51,7 @@ enum iio_chan_info_enum {
 	IIO_CHAN_INFO_PHASE,
 	IIO_CHAN_INFO_HARDWAREGAIN,
 	IIO_CHAN_INFO_HYSTERESIS,
+	IIO_CHAN_INFO_HYSTERESIS_RELATIVE,
 	IIO_CHAN_INFO_INT_TIME,
 	IIO_CHAN_INFO_ENABLE,
 	IIO_CHAN_INFO_CALIBHEIGHT,
diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index 5ff8597ceabd..6035d9a98fb8 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -3467,6 +3467,7 @@ struct ec_response_get_next_event_v1 {
 #define EC_MKBP_LID_OPEN	0
 #define EC_MKBP_TABLET_MODE	1
 #define EC_MKBP_BASE_ATTACHED	2
+#define EC_MKBP_FRONT_PROXIMITY	3
 
 /* Run keyboard factory test scanning */
 #define EC_CMD_KEYBOARD_FACTORY_TEST 0x0068
diff --git a/include/linux/platform_data/invensense_mpu6050.h b/include/linux/platform_data/invensense_mpu6050.h
index 93974f4cfba1..f05b37521f67 100644
--- a/include/linux/platform_data/invensense_mpu6050.h
+++ b/include/linux/platform_data/invensense_mpu6050.h
@@ -12,7 +12,7 @@
  *			mounting matrix retrieved from device-tree)
  *
  * Contains platform specific information on how to configure the MPU6050 to
- * work on this platform.  The orientation matricies are 3x3 rotation matricies
+ * work on this platform.  The orientation matrices are 3x3 rotation matrices
  * that are applied to the data to rotate from the mounting orientation to the
  * platform orientation.  The values must be one of 0, 1, or -1 and each row and
  * column should have exactly 1 non-zero value.
diff --git a/include/uapi/linux/iio/buffer.h b/include/uapi/linux/iio/buffer.h
new file mode 100644
index 000000000000..13939032b3f6
--- /dev/null
+++ b/include/uapi/linux/iio/buffer.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* industrial I/O buffer definitions needed both in and out of kernel
+ */
+
+#ifndef _UAPI_IIO_BUFFER_H_
+#define _UAPI_IIO_BUFFER_H_
+
+#define IIO_BUFFER_GET_FD_IOCTL			_IOWR('i', 0x91, int)
+
+#endif /* _UAPI_IIO_BUFFER_H_ */