Merge tag 'char-misc-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the "big" set of char/misc and other driver subsystem changes
  for 6.12-rc1.

  Lots of changes in here, primarily dominated by the usual IIO driver
  updates and additions, but there are also small driver subsystem
  updates all over the place. Included in here are:

   - lots and lots of new IIO drivers and updates to existing ones

   - interconnect subsystem updates and new drivers

   - nvmem subsystem updates and new drivers

   - mhi driver updates

   - power supply subsystem updates

   - kobj_type const work for many different small subsystems

   - comedi driver fix

   - coresight subsystem and driver updates

   - fpga subsystem improvements

   - slimbus fixups

   - binder new feature addition for "frozen" notifications

   - lots and lots of other small driver updates and cleanups

  All of these have been in linux-next for a long time with no reported
  problems"

* tag 'char-misc-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (354 commits)
  greybus: gb-beagleplay: Add firmware upload API
  arm64: dts: ti: k3-am625-beagleplay: Add bootloader-backdoor-gpios to cc1352p7
  dt-bindings: net: ti,cc1352p7: Add bootloader-backdoor-gpios
  MAINTAINERS: Update path for U-Boot environment variables YAML
  nvmem: layouts: add U-Boot env layout
  comedi: ni_routing: tools: Check when the file could not be opened
  ocxl: Remove the unused declarations in headr file
  hpet: Fix the wrong format specifier
  uio: Constify struct kobj_type
  cxl: Constify struct kobj_type
  binder: modify the comment for binder_proc_unlock
  iio: adc: axp20x_adc: add support for AXP717 ADC
  dt-bindings: iio: adc: Add AXP717 compatible
  iio: adc: axp20x_adc: Add adc_en1 and adc_en2 to axp_data
  w1: ds2482: Drop explicit initialization of struct i2c_device_id::driver_data to 0
  tools: iio: rm .*.cmd when make clean
  iio: adc: standardize on formatting for id match tables
  iio: proximity: aw96103: Add support for aw96103/aw96105 proximity sensor
  bus: mhi: host: pci_generic: Enable EDL trigger for Foxconn modems
  bus: mhi: host: pci_generic: Update EDL firmware path for Foxconn modems
  ...

5 files changed, 128 insertions, 50 deletions

diff --git a/include/linux/coresight-pmu.h b/include/linux/coresight-pmu.h
index 51ac441a37c3..89b0ac0014b0 100644
--- a/include/linux/coresight-pmu.h
+++ b/include/linux/coresight-pmu.h
@@ -49,12 +49,21 @@
  * Interpretation of the PERF_RECORD_AUX_OUTPUT_HW_ID payload.
  * Used to associate a CPU with the CoreSight Trace ID.
  * [07:00] - Trace ID - uses 8 bits to make value easy to read in file.
- * [59:08] - Unused (SBZ)
- * [63:60] - Version
+ * [39:08] - Sink ID - as reported in /sys/bus/event_source/devices/cs_etm/sinks/
+ *	      Added in minor version 1.
+ * [55:40] - Unused (SBZ)
+ * [59:56] - Minor Version - previously existing fields are compatible with
+ *	      all minor versions.
+ * [63:60] - Major Version - previously existing fields mean different things
+ *	      in new major versions.
  */
 #define CS_AUX_HW_ID_TRACE_ID_MASK	GENMASK_ULL(7, 0)
-#define CS_AUX_HW_ID_VERSION_MASK	GENMASK_ULL(63, 60)
+#define CS_AUX_HW_ID_SINK_ID_MASK	GENMASK_ULL(39, 8)
 
-#define CS_AUX_HW_ID_CURR_VERSION 0
+#define CS_AUX_HW_ID_MINOR_VERSION_MASK	GENMASK_ULL(59, 56)
+#define CS_AUX_HW_ID_MAJOR_VERSION_MASK	GENMASK_ULL(63, 60)
+
+#define CS_AUX_HW_ID_MAJOR_VERSION 0
+#define CS_AUX_HW_ID_MINOR_VERSION 1
 
 #endif
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index f09ace92176e..c13342594278 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -218,6 +218,24 @@ struct coresight_sysfs_link {
 	const char *target_name;
 };
 
+/* architecturally we have 128 IDs some of which are reserved */
+#define CORESIGHT_TRACE_IDS_MAX 128
+
+/**
+ * Trace ID map.
+ *
+ * @used_ids:	Bitmap to register available (bit = 0) and in use (bit = 1) IDs.
+ *		Initialised so that the reserved IDs are permanently marked as
+ *		in use.
+ * @perf_cs_etm_session_active: Number of Perf sessions using this ID map.
+ */
+struct coresight_trace_id_map {
+	DECLARE_BITMAP(used_ids, CORESIGHT_TRACE_IDS_MAX);
+	atomic_t __percpu *cpu_map;
+	atomic_t perf_cs_etm_session_active;
+	spinlock_t lock;
+};
+
 /**
  * struct coresight_device - representation of a device as used by the framework
  * @pdata:	Platform data with device connections associated to this device.
@@ -271,6 +289,7 @@ struct coresight_device {
 	bool sysfs_sink_activated;
 	struct dev_ext_attribute *ea;
 	struct coresight_device *def_sink;
+	struct coresight_trace_id_map perf_sink_id_map;
 	/* sysfs links between components */
 	int nr_links;
 	bool has_conns_grp;
@@ -365,7 +384,7 @@ struct coresight_ops_link {
 struct coresight_ops_source {
 	int (*cpu_id)(struct coresight_device *csdev);
 	int (*enable)(struct coresight_device *csdev, struct perf_event *event,
-		      enum cs_mode mode);
+		      enum cs_mode mode, struct coresight_trace_id_map *id_map);
 	void (*disable)(struct coresight_device *csdev,
 			struct perf_event *event);
 };
diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h
index 8099759d7242..37d56914d485 100644
--- a/include/linux/iio/backend.h
+++ b/include/linux/iio/backend.h
@@ -3,6 +3,7 @@
 #define _IIO_BACKEND_H_
 
 #include <linux/types.h>
+#include <linux/iio/iio.h>
 
 struct iio_chan_spec;
 struct fwnode_handle;
@@ -17,11 +18,13 @@ enum iio_backend_data_type {
 };
 
 enum iio_backend_data_source {
-	IIO_BACKEND_INTERNAL_CONTINUOS_WAVE,
+	IIO_BACKEND_INTERNAL_CONTINUOUS_WAVE,
 	IIO_BACKEND_EXTERNAL,
 	IIO_BACKEND_DATA_SOURCE_MAX
 };
 
+#define iio_backend_debugfs_ptr(ptr)	PTR_IF(IS_ENABLED(CONFIG_DEBUG_FS), ptr)
+
 /**
  * IIO_BACKEND_EX_INFO - Helper for an IIO extended channel attribute
  * @_name: Attribute name
@@ -54,6 +57,8 @@ enum iio_backend_test_pattern {
 	IIO_BACKEND_NO_TEST_PATTERN,
 	/* modified prbs9 */
 	IIO_BACKEND_ADI_PRBS_9A = 32,
+	/* modified prbs23 */
+	IIO_BACKEND_ADI_PRBS_23A,
 	IIO_BACKEND_TEST_PATTERN_MAX
 };
 
@@ -81,6 +86,9 @@ enum iio_backend_sample_trigger {
  * @extend_chan_spec: Extend an IIO channel.
  * @ext_info_set: Extended info setter.
  * @ext_info_get: Extended info getter.
+ * @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.
  **/
 struct iio_backend_ops {
 	int (*enable)(struct iio_backend *back);
@@ -113,11 +121,31 @@ struct iio_backend_ops {
 			    const char *buf, size_t len);
 	int (*ext_info_get)(struct iio_backend *back, uintptr_t private,
 			    const struct iio_chan_spec *chan, char *buf);
+	int (*read_raw)(struct iio_backend *back,
+			struct iio_chan_spec const *chan, int *val, int *val2,
+			long mask);
+	int (*debugfs_print_chan_status)(struct iio_backend *back,
+					 unsigned int chan, char *buf,
+					 size_t len);
+	int (*debugfs_reg_access)(struct iio_backend *back, unsigned int reg,
+				  unsigned int writeval, unsigned int *readval);
+};
+
+/**
+ * struct iio_backend_info - info structure for an iio_backend
+ * @name: Backend name.
+ * @ops: Backend operations.
+ */
+struct iio_backend_info {
+	const char *name;
+	const struct iio_backend_ops *ops;
 };
 
 int iio_backend_chan_enable(struct iio_backend *back, unsigned int chan);
 int iio_backend_chan_disable(struct iio_backend *back, unsigned int chan);
 int devm_iio_backend_enable(struct device *dev, struct iio_backend *back);
+int iio_backend_enable(struct iio_backend *back);
+void iio_backend_disable(struct iio_backend *back);
 int iio_backend_data_format_set(struct iio_backend *back, unsigned int chan,
 				const struct iio_backend_data_fmt *data);
 int iio_backend_data_source_set(struct iio_backend *back, unsigned int chan,
@@ -141,17 +169,41 @@ ssize_t iio_backend_ext_info_set(struct iio_dev *indio_dev, uintptr_t private,
 				 const char *buf, size_t len);
 ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private,
 				 const struct iio_chan_spec *chan, char *buf);
-
-int iio_backend_extend_chan_spec(struct iio_dev *indio_dev,
-				 struct iio_backend *back,
+int iio_backend_read_raw(struct iio_backend *back,
+			 struct iio_chan_spec const *chan, int *val, int *val2,
+			 long mask);
+int iio_backend_extend_chan_spec(struct iio_backend *back,
 				 struct iio_chan_spec *chan);
 void *iio_backend_get_priv(const struct iio_backend *conv);
 struct iio_backend *devm_iio_backend_get(struct device *dev, const char *name);
+struct iio_backend *devm_iio_backend_fwnode_get(struct device *dev,
+						const char *name,
+						struct fwnode_handle *fwnode);
 struct iio_backend *
 __devm_iio_backend_get_from_fwnode_lookup(struct device *dev,
 					  struct fwnode_handle *fwnode);
 
 int devm_iio_backend_register(struct device *dev,
-			      const struct iio_backend_ops *ops, void *priv);
+			      const struct iio_backend_info *info, void *priv);
+
+static inline int iio_backend_read_scale(struct iio_backend *back,
+					 struct iio_chan_spec const *chan,
+					 int *val, int *val2)
+{
+	return iio_backend_read_raw(back, chan, val, val2, IIO_CHAN_INFO_SCALE);
+}
+
+static inline int iio_backend_read_offset(struct iio_backend *back,
+					  struct iio_chan_spec const *chan,
+					  int *val, int *val2)
+{
+	return iio_backend_read_raw(back, chan, val, val2,
+				    IIO_CHAN_INFO_OFFSET);
+}
 
+ssize_t iio_backend_debugfs_print_chan_status(struct iio_backend *back,
+					      unsigned int chan, char *buf,
+					      size_t len);
+void iio_backend_debugfs_add(struct iio_backend *back,
+			     struct iio_dev *indio_dev);
 #endif
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 894309294182..18779b631e90 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -609,7 +609,7 @@ struct iio_dev {
 	int				scan_bytes;
 
 	const unsigned long		*available_scan_masks;
-	unsigned			masklength;
+	unsigned			__private masklength;
 	const unsigned long		*active_scan_mask;
 	bool				scan_timestamp;
 	struct iio_trigger		*trig;
@@ -810,6 +810,23 @@ static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
 }
 #endif
 
+/**
+ * iio_device_suspend_triggering() - suspend trigger attached to an iio_dev
+ * @indio_dev: iio_dev associated with the device that will have triggers suspended
+ *
+ * Return 0 if successful, negative otherwise
+ **/
+int iio_device_suspend_triggering(struct iio_dev *indio_dev);
+
+/**
+ * iio_device_resume_triggering() - resume trigger attached to an iio_dev
+ *	that was previously suspended with iio_device_suspend_triggering()
+ * @indio_dev: iio_dev associated with the device that will have triggers resumed
+ *
+ * Return 0 if successful, negative otherwise
+ **/
+int iio_device_resume_triggering(struct iio_dev *indio_dev);
+
 #ifdef CONFIG_ACPI
 bool iio_read_acpi_mount_matrix(struct device *dev,
 				struct iio_mount_matrix *orientation,
@@ -855,6 +872,26 @@ static inline const struct iio_scan_type
 	return &chan->scan_type;
 }
 
+/**
+ * iio_get_masklength - Get length of the channels mask
+ * @indio_dev: the IIO device to get the masklength for
+ */
+static inline unsigned int iio_get_masklength(const struct iio_dev *indio_dev)
+{
+	return ACCESS_PRIVATE(indio_dev, masklength);
+}
+
+int iio_active_scan_mask_index(struct iio_dev *indio_dev);
+
+/**
+ * iio_for_each_active_channel - Iterated over active channels
+ * @indio_dev: the IIO device
+ * @chan: Holds the index of the enabled channel
+ */
+#define iio_for_each_active_channel(indio_dev, chan) \
+	for_each_set_bit((chan), (indio_dev)->active_scan_mask, \
+			 iio_get_masklength(indio_dev))
+
 ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
 
 int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer,
diff --git a/include/linux/platform_data/ad5449.h b/include/linux/platform_data/ad5449.h
deleted file mode 100644
index d687ef5726c2..000000000000
--- a/include/linux/platform_data/ad5449.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * AD5415, AD5426, AD5429, AD5432, AD5439, AD5443, AD5449 Digital to Analog
- * Converter driver.
- *
- * Copyright 2012 Analog Devices Inc.
- *  Author: Lars-Peter Clausen <lars@metafoo.de>
- */
-
-#ifndef __LINUX_PLATFORM_DATA_AD5449_H__
-#define __LINUX_PLATFORM_DATA_AD5449_H__
-
-/**
- * enum ad5449_sdo_mode - AD5449 SDO pin configuration
- * @AD5449_SDO_DRIVE_FULL: Drive the SDO pin with full strength.
- * @AD5449_SDO_DRIVE_WEAK: Drive the SDO pin with not full strength.
- * @AD5449_SDO_OPEN_DRAIN: Operate the SDO pin in open-drain mode.
- * @AD5449_SDO_DISABLED: Disable the SDO pin, in this mode it is not possible to
- *			read back from the device.
- */
-enum ad5449_sdo_mode {
-	AD5449_SDO_DRIVE_FULL = 0x0,
-	AD5449_SDO_DRIVE_WEAK = 0x1,
-	AD5449_SDO_OPEN_DRAIN = 0x2,
-	AD5449_SDO_DISABLED = 0x3,
-};
-
-/**
- * struct ad5449_platform_data - Platform data for the ad5449 DAC driver
- * @sdo_mode: SDO pin mode
- * @hardware_clear_to_midscale: Whether asserting the hardware CLR pin sets the
- *			outputs to midscale (true) or to zero scale(false).
- */
-struct ad5449_platform_data {
-	enum ad5449_sdo_mode sdo_mode;
-	bool hardware_clear_to_midscale;
-};
-
-#endif