Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 599 insertions, 0 deletions

diff --git a/drivers/pinctrl/pinctrl-scmi.c b/drivers/pinctrl/pinctrl-scmi.c
new file mode 100644
index 000000000..1bb36ca47
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-scmi.c
@@ -0,0 +1,599 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * System Control and Power Interface (SCMI) Protocol based pinctrl driver
+ *
+ * Copyright (C) 2024 EPAM
+ * Copyright 2024 NXP
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/scmi_protocol.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <linux/pinctrl/machine.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+
+#include "pinctrl-utils.h"
+#include "core.h"
+#include "pinconf.h"
+
+#define DRV_NAME "scmi-pinctrl"
+
+/* Define num configs, if not large than 4 use stack, else use kcalloc() */
+#define SCMI_NUM_CONFIGS	4
+
+static const struct scmi_pinctrl_proto_ops *pinctrl_ops;
+
+struct scmi_pinctrl {
+	struct device *dev;
+	struct scmi_protocol_handle *ph;
+	struct pinctrl_dev *pctldev;
+	struct pinctrl_desc pctl_desc;
+	struct pinfunction *functions;
+	unsigned int nr_functions;
+};
+
+static int pinctrl_scmi_get_groups_count(struct pinctrl_dev *pctldev)
+{
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	return pinctrl_ops->count_get(pmx->ph, GROUP_TYPE);
+}
+
+static const char *pinctrl_scmi_get_group_name(struct pinctrl_dev *pctldev,
+					       unsigned int selector)
+{
+	int ret;
+	const char *name;
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	ret = pinctrl_ops->name_get(pmx->ph, selector, GROUP_TYPE, &name);
+	if (ret) {
+		dev_err(pmx->dev, "get name failed with err %d", ret);
+		return NULL;
+	}
+
+	return name;
+}
+
+static int pinctrl_scmi_get_group_pins(struct pinctrl_dev *pctldev,
+				       unsigned int selector,
+				       const unsigned int **pins,
+				       unsigned int *num_pins)
+{
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	return pinctrl_ops->group_pins_get(pmx->ph, selector, pins, num_pins);
+}
+
+static const struct pinctrl_ops pinctrl_scmi_pinctrl_ops = {
+	.get_groups_count = pinctrl_scmi_get_groups_count,
+	.get_group_name = pinctrl_scmi_get_group_name,
+	.get_group_pins = pinctrl_scmi_get_group_pins,
+#ifdef CONFIG_OF
+	.dt_node_to_map = pinconf_generic_dt_node_to_map_all,
+	.dt_free_map = pinconf_generic_dt_free_map,
+#endif
+};
+
+static int pinctrl_scmi_get_functions_count(struct pinctrl_dev *pctldev)
+{
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	return pinctrl_ops->count_get(pmx->ph, FUNCTION_TYPE);
+}
+
+static const char *pinctrl_scmi_get_function_name(struct pinctrl_dev *pctldev,
+						  unsigned int selector)
+{
+	int ret;
+	const char *name;
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	ret = pinctrl_ops->name_get(pmx->ph, selector, FUNCTION_TYPE, &name);
+	if (ret) {
+		dev_err(pmx->dev, "get name failed with err %d", ret);
+		return NULL;
+	}
+
+	return name;
+}
+
+static int pinctrl_scmi_get_function_groups(struct pinctrl_dev *pctldev,
+					    unsigned int selector,
+					    const char * const **p_groups,
+					    unsigned int * const p_num_groups)
+{
+	struct pinfunction *func;
+	const unsigned int *group_ids;
+	unsigned int num_groups;
+	const char **groups;
+	int ret, i;
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	if (!p_groups || !p_num_groups)
+		return -EINVAL;
+
+	if (selector >= pmx->nr_functions)
+		return -EINVAL;
+
+	func = &pmx->functions[selector];
+	if (func->ngroups)
+		goto done;
+
+	ret = pinctrl_ops->function_groups_get(pmx->ph, selector, &num_groups,
+					       &group_ids);
+	if (ret) {
+		dev_err(pmx->dev, "Unable to get function groups, err %d", ret);
+		return ret;
+	}
+	if (!num_groups)
+		return -EINVAL;
+
+	groups = kcalloc(num_groups, sizeof(*groups), GFP_KERNEL);
+	if (!groups)
+		return -ENOMEM;
+
+	for (i = 0; i < num_groups; i++) {
+		groups[i] = pinctrl_scmi_get_group_name(pctldev, group_ids[i]);
+		if (!groups[i]) {
+			ret = -EINVAL;
+			goto err_free;
+		}
+	}
+
+	func->ngroups = num_groups;
+	func->groups = groups;
+done:
+	*p_groups = func->groups;
+	*p_num_groups = func->ngroups;
+
+	return 0;
+
+err_free:
+	kfree(groups);
+
+	return ret;
+}
+
+static int pinctrl_scmi_func_set_mux(struct pinctrl_dev *pctldev,
+				     unsigned int selector, unsigned int group)
+{
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	return pinctrl_ops->mux_set(pmx->ph, selector, group);
+}
+
+static int pinctrl_scmi_request(struct pinctrl_dev *pctldev,
+				unsigned int offset)
+{
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	return pinctrl_ops->pin_request(pmx->ph, offset);
+}
+
+static int pinctrl_scmi_free(struct pinctrl_dev *pctldev, unsigned int offset)
+{
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	return pinctrl_ops->pin_free(pmx->ph, offset);
+}
+
+static const struct pinmux_ops pinctrl_scmi_pinmux_ops = {
+	.request = pinctrl_scmi_request,
+	.free = pinctrl_scmi_free,
+	.get_functions_count = pinctrl_scmi_get_functions_count,
+	.get_function_name = pinctrl_scmi_get_function_name,
+	.get_function_groups = pinctrl_scmi_get_function_groups,
+	.set_mux = pinctrl_scmi_func_set_mux,
+};
+
+static int pinctrl_scmi_map_pinconf_type(enum pin_config_param param,
+					 enum scmi_pinctrl_conf_type *type)
+{
+	u32 arg = param;
+
+	switch (arg) {
+	case PIN_CONFIG_BIAS_BUS_HOLD:
+		*type = SCMI_PIN_BIAS_BUS_HOLD;
+		break;
+	case PIN_CONFIG_BIAS_DISABLE:
+		*type = SCMI_PIN_BIAS_DISABLE;
+		break;
+	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+		*type = SCMI_PIN_BIAS_HIGH_IMPEDANCE;
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		*type = SCMI_PIN_BIAS_PULL_DOWN;
+		break;
+	case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
+		*type = SCMI_PIN_BIAS_PULL_DEFAULT;
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		*type = SCMI_PIN_BIAS_PULL_UP;
+		break;
+	case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+		*type = SCMI_PIN_DRIVE_OPEN_DRAIN;
+		break;
+	case PIN_CONFIG_DRIVE_OPEN_SOURCE:
+		*type = SCMI_PIN_DRIVE_OPEN_SOURCE;
+		break;
+	case PIN_CONFIG_DRIVE_PUSH_PULL:
+		*type = SCMI_PIN_DRIVE_PUSH_PULL;
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH:
+		*type = SCMI_PIN_DRIVE_STRENGTH;
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH_UA:
+		*type = SCMI_PIN_DRIVE_STRENGTH;
+		break;
+	case PIN_CONFIG_INPUT_DEBOUNCE:
+		*type = SCMI_PIN_INPUT_DEBOUNCE;
+		break;
+	case PIN_CONFIG_INPUT_ENABLE:
+		*type = SCMI_PIN_INPUT_MODE;
+		break;
+	case PIN_CONFIG_INPUT_SCHMITT:
+		*type = SCMI_PIN_INPUT_SCHMITT;
+		break;
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		*type = SCMI_PIN_INPUT_MODE;
+		break;
+	case PIN_CONFIG_MODE_LOW_POWER:
+		*type = SCMI_PIN_LOW_POWER_MODE;
+		break;
+	case PIN_CONFIG_OUTPUT_ENABLE:
+		*type = SCMI_PIN_OUTPUT_MODE;
+		break;
+	case PIN_CONFIG_POWER_SOURCE:
+		*type = SCMI_PIN_POWER_SOURCE;
+		break;
+	case PIN_CONFIG_SLEW_RATE:
+		*type = SCMI_PIN_SLEW_RATE;
+		break;
+	case SCMI_PIN_OEM_START ... SCMI_PIN_OEM_END:
+		*type = arg;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int pinctrl_scmi_map_pinconf_type_get(enum pin_config_param param,
+					     enum scmi_pinctrl_conf_type *type)
+{
+	if (param == PIN_CONFIG_LEVEL) {
+		*type = SCMI_PIN_INPUT_VALUE;
+		return 0;
+	}
+
+	return pinctrl_scmi_map_pinconf_type(param, type);
+}
+
+static int pinctrl_scmi_map_pinconf_type_set(enum pin_config_param param,
+					     enum scmi_pinctrl_conf_type *type)
+{
+	if (param == PIN_CONFIG_LEVEL) {
+		*type = SCMI_PIN_OUTPUT_VALUE;
+		return 0;
+	}
+
+	return pinctrl_scmi_map_pinconf_type(param, type);
+}
+
+static int pinctrl_scmi_pinconf_get(struct pinctrl_dev *pctldev,
+				    unsigned int pin, unsigned long *config)
+{
+	int ret;
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+	enum pin_config_param config_type;
+	enum scmi_pinctrl_conf_type type;
+	u32 config_value;
+
+	if (!config)
+		return -EINVAL;
+
+	config_type = pinconf_to_config_param(*config);
+
+	ret = pinctrl_scmi_map_pinconf_type_get(config_type, &type);
+	if (ret)
+		return ret;
+
+	ret = pinctrl_ops->settings_get_one(pmx->ph, pin, PIN_TYPE, type,
+					    &config_value);
+	/* Convert SCMI error code to PINCTRL expected error code */
+	if (ret == -EOPNOTSUPP)
+		return -ENOTSUPP;
+	if (ret)
+		return ret;
+
+	*config = pinconf_to_config_packed(config_type, config_value);
+
+	return 0;
+}
+
+static int
+pinctrl_scmi_alloc_configs(struct pinctrl_dev *pctldev, u32 num_configs,
+			   u32 **p_config_value,
+			   enum scmi_pinctrl_conf_type **p_config_type)
+{
+	if (num_configs <= SCMI_NUM_CONFIGS)
+		return 0;
+
+	*p_config_value = kcalloc(num_configs, sizeof(**p_config_value), GFP_KERNEL);
+	if (!*p_config_value)
+		return -ENOMEM;
+
+	*p_config_type = kzalloc_objs(**p_config_type, num_configs);
+	if (!*p_config_type) {
+		kfree(*p_config_value);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void
+pinctrl_scmi_free_configs(struct pinctrl_dev *pctldev, u32 num_configs,
+			  u32 **p_config_value,
+			  enum scmi_pinctrl_conf_type **p_config_type)
+{
+	if (num_configs <= SCMI_NUM_CONFIGS)
+		return;
+
+	kfree(*p_config_value);
+	kfree(*p_config_type);
+}
+
+static int pinctrl_scmi_pinconf_set(struct pinctrl_dev *pctldev,
+				    unsigned int pin,
+				    unsigned long *configs,
+				    unsigned int num_configs)
+{
+	int i, cnt, ret;
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+	enum scmi_pinctrl_conf_type config_type[SCMI_NUM_CONFIGS];
+	u32 config_value[SCMI_NUM_CONFIGS];
+	enum scmi_pinctrl_conf_type *p_config_type = config_type;
+	u32 *p_config_value = config_value;
+	enum pin_config_param param;
+
+	if (!configs || !num_configs)
+		return -EINVAL;
+
+	ret = pinctrl_scmi_alloc_configs(pctldev, num_configs, &p_config_type,
+					 &p_config_value);
+	if (ret)
+		return ret;
+
+	cnt = 0;
+	for (i = 0; i < num_configs; i++) {
+		param = pinconf_to_config_param(configs[i]);
+		if (param == PIN_CONFIG_PERSIST_STATE)
+			continue;
+		ret = pinctrl_scmi_map_pinconf_type_set(param, &p_config_type[cnt]);
+		if (ret) {
+			dev_err(pmx->dev, "Error map pinconf_type %d\n", ret);
+			goto free_config;
+		}
+		p_config_value[cnt] = pinconf_to_config_argument(configs[i]);
+		cnt++;
+	}
+
+	ret = pinctrl_ops->settings_conf(pmx->ph, pin, PIN_TYPE, cnt,
+					 p_config_type,  p_config_value);
+	if (ret)
+		dev_err(pmx->dev, "Error parsing config %d\n", ret);
+
+free_config:
+	pinctrl_scmi_free_configs(pctldev, num_configs, &p_config_type,
+				  &p_config_value);
+	return ret;
+}
+
+static int pinctrl_scmi_pinconf_group_set(struct pinctrl_dev *pctldev,
+					  unsigned int group,
+					  unsigned long *configs,
+					  unsigned int num_configs)
+{
+	int i, ret;
+	struct scmi_pinctrl *pmx =  pinctrl_dev_get_drvdata(pctldev);
+	enum scmi_pinctrl_conf_type config_type[SCMI_NUM_CONFIGS];
+	u32 config_value[SCMI_NUM_CONFIGS];
+	enum scmi_pinctrl_conf_type *p_config_type = config_type;
+	u32 *p_config_value = config_value;
+	enum pin_config_param param;
+
+	if (!configs || !num_configs)
+		return -EINVAL;
+
+	ret = pinctrl_scmi_alloc_configs(pctldev, num_configs, &p_config_type,
+					 &p_config_value);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < num_configs; i++) {
+		param = pinconf_to_config_param(configs[i]);
+		ret = pinctrl_scmi_map_pinconf_type_set(param, &p_config_type[i]);
+		if (ret) {
+			dev_err(pmx->dev, "Error map pinconf_type %d\n", ret);
+			goto free_config;
+		}
+
+		p_config_value[i] = pinconf_to_config_argument(configs[i]);
+	}
+
+	ret = pinctrl_ops->settings_conf(pmx->ph, group, GROUP_TYPE,
+					 num_configs, p_config_type,
+					 p_config_value);
+	if (ret)
+		dev_err(pmx->dev, "Error parsing config %d", ret);
+
+free_config:
+	pinctrl_scmi_free_configs(pctldev, num_configs, &p_config_type,
+				  &p_config_value);
+	return ret;
+};
+
+static int pinctrl_scmi_pinconf_group_get(struct pinctrl_dev *pctldev,
+					  unsigned int group,
+					  unsigned long *config)
+{
+	int ret;
+	struct scmi_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
+	enum pin_config_param config_type;
+	enum scmi_pinctrl_conf_type type;
+	u32 config_value;
+
+	if (!config)
+		return -EINVAL;
+
+	config_type = pinconf_to_config_param(*config);
+	ret = pinctrl_scmi_map_pinconf_type_get(config_type, &type);
+	if (ret) {
+		dev_err(pmx->dev, "Error map pinconf_type %d\n", ret);
+		return ret;
+	}
+
+	ret = pinctrl_ops->settings_get_one(pmx->ph, group, GROUP_TYPE, type,
+					    &config_value);
+	/* Convert SCMI error code to PINCTRL expected error code */
+	if (ret == -EOPNOTSUPP)
+		return -ENOTSUPP;
+	if (ret)
+		return ret;
+
+	*config = pinconf_to_config_packed(config_type, config_value);
+
+	return 0;
+}
+
+static const struct pinconf_ops pinctrl_scmi_pinconf_ops = {
+	.is_generic = true,
+	.pin_config_get = pinctrl_scmi_pinconf_get,
+	.pin_config_set = pinctrl_scmi_pinconf_set,
+	.pin_config_group_set = pinctrl_scmi_pinconf_group_set,
+	.pin_config_group_get = pinctrl_scmi_pinconf_group_get,
+	.pin_config_config_dbg_show = pinconf_generic_dump_config,
+};
+
+static int pinctrl_scmi_get_pins(struct scmi_pinctrl *pmx,
+				 struct pinctrl_desc *desc)
+{
+	struct pinctrl_pin_desc *pins;
+	unsigned int npins;
+	int ret, i;
+
+	npins = pinctrl_ops->count_get(pmx->ph, PIN_TYPE);
+	/*
+	 * npins will never be zero, the scmi pinctrl driver has bailed out
+	 * if npins is zero.
+	 */
+	pins = devm_kmalloc_array(pmx->dev, npins, sizeof(*pins), GFP_KERNEL);
+	if (!pins)
+		return -ENOMEM;
+
+	for (i = 0; i < npins; i++) {
+		pins[i].number = i;
+		/*
+		 * The memory for name is handled by the scmi firmware driver,
+		 * no need free here
+		 */
+		ret = pinctrl_ops->name_get(pmx->ph, i, PIN_TYPE, &pins[i].name);
+		if (ret)
+			return dev_err_probe(pmx->dev, ret,
+					     "Can't get name for pin %d", i);
+	}
+
+	desc->npins = npins;
+	desc->pins = pins;
+	dev_dbg(pmx->dev, "got pins %u", npins);
+
+	return 0;
+}
+
+static const char * const scmi_pinctrl_blocklist[] = {
+	"fsl,imx94",
+	"fsl,imx95",
+	"fsl,imx952",
+	NULL
+};
+
+static int scmi_pinctrl_probe(struct scmi_device *sdev)
+{
+	int ret;
+	struct device *dev = &sdev->dev;
+	struct scmi_pinctrl *pmx;
+	const struct scmi_handle *handle;
+	struct scmi_protocol_handle *ph;
+
+	if (!sdev->handle)
+		return -EINVAL;
+
+	if (of_machine_compatible_match(scmi_pinctrl_blocklist))
+		return -ENODEV;
+
+	handle = sdev->handle;
+
+	pinctrl_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PINCTRL, &ph);
+	if (IS_ERR(pinctrl_ops))
+		return PTR_ERR(pinctrl_ops);
+
+	pmx = devm_kzalloc(dev, sizeof(*pmx), GFP_KERNEL);
+	if (!pmx)
+		return -ENOMEM;
+
+	pmx->ph = ph;
+
+	pmx->dev = dev;
+	pmx->pctl_desc.name = DRV_NAME;
+	pmx->pctl_desc.owner = THIS_MODULE;
+	pmx->pctl_desc.pctlops = &pinctrl_scmi_pinctrl_ops;
+	pmx->pctl_desc.pmxops = &pinctrl_scmi_pinmux_ops;
+	pmx->pctl_desc.confops = &pinctrl_scmi_pinconf_ops;
+
+	ret = pinctrl_scmi_get_pins(pmx, &pmx->pctl_desc);
+	if (ret)
+		return ret;
+
+	ret = devm_pinctrl_register_and_init(dev, &pmx->pctl_desc, pmx,
+					     &pmx->pctldev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to register pinctrl\n");
+
+	pmx->nr_functions = pinctrl_scmi_get_functions_count(pmx->pctldev);
+	pmx->functions = devm_kcalloc(dev, pmx->nr_functions,
+				      sizeof(*pmx->functions), GFP_KERNEL);
+	if (!pmx->functions)
+		return -ENOMEM;
+
+	return pinctrl_enable(pmx->pctldev);
+}
+
+static const struct scmi_device_id scmi_id_table[] = {
+	{ SCMI_PROTOCOL_PINCTRL, "pinctrl" },
+	{ }
+};
+MODULE_DEVICE_TABLE(scmi, scmi_id_table);
+
+static struct scmi_driver scmi_pinctrl_driver = {
+	.name = DRV_NAME,
+	.probe = scmi_pinctrl_probe,
+	.id_table = scmi_id_table,
+};
+module_scmi_driver(scmi_pinctrl_driver);
+
+MODULE_AUTHOR("Oleksii Moisieiev <oleksii_moisieiev@epam.com>");
+MODULE_AUTHOR("Peng Fan <peng.fan@nxp.com>");
+MODULE_DESCRIPTION("ARM SCMI pin controller driver");
+MODULE_LICENSE("GPL");