drivers/soc/qcom/rpm_stats.c - kernel/msm-4.9 - Gitiles

 /* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  */

 #include <linux/debugfs.h>
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/uaccess.h>
 #include <asm/arch_timer.h>

 #define RPM_STATS_NUM_REC	2
 #define MSM_ARCH_TIMER_FREQ	19200000

 #define GET_PDATA_OF_ATTR(attr) \
 	(container_of(attr, struct msm_rpmstats_kobj_attr, ka)->pd)

 struct msm_rpmstats_record {
 	char name[32];
 	u32 id;
 	u32 val;
 };

 struct msm_rpmstats_platform_data {
 	phys_addr_t phys_addr_base;
 	u32 phys_size;
 };

 struct msm_rpmstats_private_data {
 	void __iomem *reg_base;
 	u32 num_records;
 	u32 read_idx;
 	u32 len;
 	char buf[320];
 	struct msm_rpmstats_platform_data *platform_data;
 };

 struct msm_rpm_stats_data {
 	u32 stat_type;
 	u32 count;
 	u64 last_entered_at;
 	u64 last_exited_at;
 	u64 accumulated;
 };

 struct msm_rpmstats_kobj_attr {
 	struct kobj_attribute ka;
 	struct msm_rpmstats_platform_data *pd;
 };

 static inline u64 get_time_in_sec(u64 counter)
 {
 	do_div(counter, MSM_ARCH_TIMER_FREQ);

 	return counter;
 }

 static inline u64 get_time_in_msec(u64 counter)
 {
 	do_div(counter, MSM_ARCH_TIMER_FREQ);
 	counter *= MSEC_PER_SEC;

 	return counter;
 }

 static inline int msm_rpmstats_append_data_to_buf(char *buf,
 		struct msm_rpm_stats_data *data, int buflength)
 {
 	char stat_type[5];
 	u64 time_in_last_mode;
 	u64 time_since_last_mode;
 	u64 actual_last_sleep;

 	stat_type[4] = 0;
 	memcpy(stat_type, &data->stat_type, sizeof(u32));

 	time_in_last_mode = data->last_exited_at - data->last_entered_at;
 	time_in_last_mode = get_time_in_msec(time_in_last_mode);
 	time_since_last_mode = arch_counter_get_cntvct() - data->last_exited_at;
 	time_since_last_mode = get_time_in_sec(time_since_last_mode);
 	actual_last_sleep = get_time_in_msec(data->accumulated);

 	return snprintf(buf, buflength,
 		"RPM Mode:%s\n\t count:%d\ntime in last mode(msec):%llu\n"
 		"time since last mode(sec):%llu\nactual last sleep(msec):%llu\n\n",
 		stat_type, data->count, time_in_last_mode,
 		time_since_last_mode, actual_last_sleep);
 }

 static inline u32 msm_rpmstats_read_long_register(void __iomem *regbase,
 		int index, int offset)
 {
 	return readl_relaxed(regbase + offset +
 			index * sizeof(struct msm_rpm_stats_data));
 }

 static inline u64 msm_rpmstats_read_quad_register(void __iomem *regbase,
 		int index, int offset)
 {
 	u64 dst;

 	memcpy_fromio(&dst,
 		regbase + offset + index * sizeof(struct msm_rpm_stats_data),
 		8);
 	return dst;
 }

 static inline int msm_rpmstats_copy_stats(
 			struct msm_rpmstats_private_data *prvdata)
 {
 	void __iomem *reg;
 	struct msm_rpm_stats_data data;
 	int i, length;

 	reg = prvdata->reg_base;

 	for (i = 0, length = 0; i < prvdata->num_records; i++) {
 		data.stat_type = msm_rpmstats_read_long_register(reg, i,
 				offsetof(struct msm_rpm_stats_data,
 					stat_type));
 		data.count = msm_rpmstats_read_long_register(reg, i,
 				offsetof(struct msm_rpm_stats_data, count));
 		data.last_entered_at = msm_rpmstats_read_quad_register(reg,
 				i, offsetof(struct msm_rpm_stats_data,
 					last_entered_at));
 		data.last_exited_at = msm_rpmstats_read_quad_register(reg,
 				i, offsetof(struct msm_rpm_stats_data,
 					last_exited_at));
 		data.accumulated = msm_rpmstats_read_quad_register(reg,
 				i, offsetof(struct msm_rpm_stats_data,
 					accumulated));
 		length += msm_rpmstats_append_data_to_buf(prvdata->buf + length,
 				&data, sizeof(prvdata->buf) - length);
 		prvdata->read_idx++;
 	}

 	return length;
 }

 static inline unsigned long  msm_rpmstats_read_register(void __iomem *regbase,
 		int index, int offset)
 {
 	return  readl_relaxed(regbase + index * 12 + (offset + 1) * 4);
 }

 static ssize_t msm_rpmstats_file_read(struct file *file, char __user *bufu,
 				  size_t count, loff_t *ppos)
 {
 	struct msm_rpmstats_private_data *prvdata;

 	prvdata = file->private_data;
 	if (!prvdata)
 		return -EINVAL;

 	if (!bufu || count == 0)
 		return -EINVAL;

 	if ((*ppos >= prvdata->len) &&
 		(prvdata->read_idx < prvdata->num_records)) {
 		prvdata->len = msm_rpmstats_copy_stats(prvdata);
 		*ppos = 0;
 	}

 	return simple_read_from_buffer(bufu, count, ppos,
 			prvdata->buf, prvdata->len);
 }

 static int msm_rpmstats_file_open(struct inode *inode, struct file *file)
 {
 	struct msm_rpmstats_private_data *prvdata;
 	struct msm_rpmstats_platform_data *pdata;

 	pdata = inode->i_private;

 	file->private_data = kzalloc(sizeof(*prvdata), GFP_KERNEL);
 	if (!file->private_data)
 		return -ENOMEM;

 	prvdata = file->private_data;

 	prvdata->reg_base = ioremap_nocache(pdata->phys_addr_base,
 					pdata->phys_size);
 	if (!prvdata->reg_base) {
 		kfree(file->private_data);
 		prvdata = NULL;
 		pr_err("%s: ERROR could not ioremap start=%pa, len=%u\n",
 			__func__, &pdata->phys_addr_base,
 			pdata->phys_size);
 		return -EBUSY;
 	}

 	prvdata->read_idx = prvdata->len = 0;
 	prvdata->platform_data = pdata;
 	prvdata->num_records = RPM_STATS_NUM_REC;

 	return 0;
 }

 static int msm_rpmstats_file_close(struct inode *inode, struct file *file)
 {
 	struct msm_rpmstats_private_data *private = file->private_data;

 	if (private->reg_base)
 		iounmap(private->reg_base);
 	kfree(file->private_data);

 	return 0;
 }

 static const struct file_operations msm_rpmstats_fops = {
 	.owner    = THIS_MODULE,
 	.open     = msm_rpmstats_file_open,
 	.read     = msm_rpmstats_file_read,
 	.release  = msm_rpmstats_file_close,
 	.llseek   = no_llseek,
 };

 static ssize_t rpmstats_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
 	struct msm_rpmstats_private_data *prvdata = NULL;
 	struct msm_rpmstats_platform_data *pdata = NULL;

 	pdata = GET_PDATA_OF_ATTR(attr);

 	prvdata =
 		kmalloc(sizeof(*prvdata), GFP_KERNEL);
 	if (!prvdata)
 		return -ENOMEM;

 	prvdata->reg_base = ioremap_nocache(pdata->phys_addr_base,
 					pdata->phys_size);
 	if (!prvdata->reg_base) {
 		kfree(prvdata);
 		pr_err("%s: ERROR could not ioremap start=%pa, len=%u\n",
 			__func__, &pdata->phys_addr_base,
 			pdata->phys_size);
 		return -EBUSY;
 	}

 	prvdata->read_idx = prvdata->len = 0;
 	prvdata->platform_data = pdata;
 	prvdata->num_records = RPM_STATS_NUM_REC;

 	if (prvdata->read_idx < prvdata->num_records)
 		prvdata->len = msm_rpmstats_copy_stats(prvdata);

 	return snprintf(buf, prvdata->len, prvdata->buf);
 }

 static int msm_rpmstats_create_sysfs(struct msm_rpmstats_platform_data *pd)
 {
 	struct kobject *module_kobj = NULL;
 	struct kobject *rpmstats_kobj = NULL;
 	struct msm_rpmstats_kobj_attr *rpms_ka = NULL;
 	int ret = 0;

 	module_kobj = kset_find_obj(module_kset, KBUILD_MODNAME);
 	if (!module_kobj) {
 		pr_err("%s: Cannot find module_kset\n", __func__);
 		return -ENODEV;
 	}

 	rpmstats_kobj = kobject_create_and_add("rpmstats", module_kobj);
 	if (!rpmstats_kobj) {
 		pr_err("%s: Cannot create rpmstats kobject\n", __func__);
 		ret = -ENOMEM;
 		goto fail;
 	}

 	rpms_ka = kzalloc(sizeof(*rpms_ka), GFP_KERNEL);
 	if (!rpms_ka) {
 		kobject_put(rpmstats_kobj);
 		ret = -ENOMEM;
 		goto fail;
 	}

 	sysfs_attr_init(&rpms_ka->ka.attr);
 	rpms_ka->pd = pd;
 	rpms_ka->ka.attr.mode = 0444;
 	rpms_ka->ka.attr.name = "stats";
 	rpms_ka->ka.show = rpmstats_show;
 	rpms_ka->ka.store = NULL;

 	ret = sysfs_create_file(rpmstats_kobj, &rpms_ka->ka.attr);

 fail:
 	return ret;
 }

 static int msm_rpmstats_probe(struct platform_device *pdev)
 {
 	struct dentry *dent = NULL;
 	struct msm_rpmstats_platform_data *pdata;
 	struct msm_rpmstats_platform_data *pd;
 	struct resource *res = NULL, *offset = NULL;
 	u32 offset_addr = 0;
 	void __iomem *phys_ptr = NULL;

 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return -ENOMEM;

 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 							"phys_addr_base");
 	if (!res)
 		return -EINVAL;

 	offset = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 							"offset_addr");
 	if (offset) {
 		/* Remap the rpm-stats pointer */
 		phys_ptr = ioremap_nocache(offset->start, SZ_4);
 		if (!phys_ptr) {
 			pr_err("%s: Failed to ioremap address: %x\n",
 					__func__, offset_addr);
 			return -ENODEV;
 		}
 		offset_addr = readl_relaxed(phys_ptr);
 		iounmap(phys_ptr);
 	}

 	pdata->phys_addr_base  = res->start + offset_addr;
 	pdata->phys_size = resource_size(res);

 	if (pdev->dev.platform_data)
 		pd = pdev->dev.platform_data;

 	dent = debugfs_create_file("rpm_stats", 0444, NULL,
 					pdata, &msm_rpmstats_fops);
 	if (!dent) {
 		pr_err("%s: ERROR rpm_stats debugfs_create_file	fail\n",
 				__func__);
 		return -ENOMEM;
 	}

 	msm_rpmstats_create_sysfs(pdata);

 	platform_set_drvdata(pdev, dent);
 	return 0;
 }

 static int msm_rpmstats_remove(struct platform_device *pdev)
 {
 	struct dentry *dent;

 	dent = platform_get_drvdata(pdev);
 	debugfs_remove(dent);
 	platform_set_drvdata(pdev, NULL);

 	return 0;
 }

 static const struct of_device_id rpm_stats_table[] = {
 	{ .compatible = "qcom,rpm-stats" },
 	{ },
 };

 static struct platform_driver msm_rpmstats_driver = {
 	.probe = msm_rpmstats_probe,
 	.remove = msm_rpmstats_remove,
 	.driver = {
 		.name = "msm_rpm_stat",
 		.owner = THIS_MODULE,
 		.of_match_table = rpm_stats_table,
 	},
 };
 builtin_platform_driver(msm_rpmstats_driver);
	/* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 and
	* only version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	*/

	#include <linux/debugfs.h>
	#include <linux/init.h>
	#include <linux/io.h>
	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/slab.h>
	#include <linux/of.h>
	#include <linux/uaccess.h>
	#include <asm/arch_timer.h>

	#define RPM_STATS_NUM_REC 2
	#define MSM_ARCH_TIMER_FREQ 19200000

	#define GET_PDATA_OF_ATTR(attr) \
	(container_of(attr, struct msm_rpmstats_kobj_attr, ka)->pd)

	struct msm_rpmstats_record {
	char name[32];
	u32 id;
	u32 val;
	};

	struct msm_rpmstats_platform_data {
	phys_addr_t phys_addr_base;
	u32 phys_size;
	};

	struct msm_rpmstats_private_data {
	void __iomem *reg_base;
	u32 num_records;
	u32 read_idx;
	u32 len;
	char buf[320];
	struct msm_rpmstats_platform_data *platform_data;
	};

	struct msm_rpm_stats_data {
	u32 stat_type;
	u32 count;
	u64 last_entered_at;
	u64 last_exited_at;
	u64 accumulated;
	};

	struct msm_rpmstats_kobj_attr {
	struct kobj_attribute ka;
	struct msm_rpmstats_platform_data *pd;
	};

	static inline u64 get_time_in_sec(u64 counter)
	{
	do_div(counter, MSM_ARCH_TIMER_FREQ);

	return counter;
	}

	static inline u64 get_time_in_msec(u64 counter)
	{
	do_div(counter, MSM_ARCH_TIMER_FREQ);
	counter *= MSEC_PER_SEC;

	return counter;
	}

	static inline int msm_rpmstats_append_data_to_buf(char *buf,
	struct msm_rpm_stats_data *data, int buflength)
	{
	char stat_type[5];
	u64 time_in_last_mode;
	u64 time_since_last_mode;
	u64 actual_last_sleep;

	stat_type[4] = 0;
	memcpy(stat_type, &data->stat_type, sizeof(u32));

	time_in_last_mode = data->last_exited_at - data->last_entered_at;
	time_in_last_mode = get_time_in_msec(time_in_last_mode);
	time_since_last_mode = arch_counter_get_cntvct() - data->last_exited_at;
	time_since_last_mode = get_time_in_sec(time_since_last_mode);
	actual_last_sleep = get_time_in_msec(data->accumulated);

	return snprintf(buf, buflength,
	"RPM Mode:%s\n\t count:%d\ntime in last mode(msec):%llu\n"
	"time since last mode(sec):%llu\nactual last sleep(msec):%llu\n\n",
	stat_type, data->count, time_in_last_mode,
	time_since_last_mode, actual_last_sleep);
	}

	static inline u32 msm_rpmstats_read_long_register(void __iomem *regbase,
	int index, int offset)
	{
	return readl_relaxed(regbase + offset +
	index * sizeof(struct msm_rpm_stats_data));
	}

	static inline u64 msm_rpmstats_read_quad_register(void __iomem *regbase,
	int index, int offset)
	{
	u64 dst;

	memcpy_fromio(&dst,
	regbase + offset + index * sizeof(struct msm_rpm_stats_data),
	8);
	return dst;
	}

	static inline int msm_rpmstats_copy_stats(
	struct msm_rpmstats_private_data *prvdata)
	{
	void __iomem *reg;
	struct msm_rpm_stats_data data;
	int i, length;

	reg = prvdata->reg_base;

	for (i = 0, length = 0; i < prvdata->num_records; i++) {
	data.stat_type = msm_rpmstats_read_long_register(reg, i,
	offsetof(struct msm_rpm_stats_data,
	stat_type));
	data.count = msm_rpmstats_read_long_register(reg, i,
	offsetof(struct msm_rpm_stats_data, count));
	data.last_entered_at = msm_rpmstats_read_quad_register(reg,
	i, offsetof(struct msm_rpm_stats_data,
	last_entered_at));
	data.last_exited_at = msm_rpmstats_read_quad_register(reg,
	i, offsetof(struct msm_rpm_stats_data,
	last_exited_at));
	data.accumulated = msm_rpmstats_read_quad_register(reg,
	i, offsetof(struct msm_rpm_stats_data,
	accumulated));
	length += msm_rpmstats_append_data_to_buf(prvdata->buf + length,
	&data, sizeof(prvdata->buf) - length);
	prvdata->read_idx++;
	}

	return length;
	}

	static inline unsigned long msm_rpmstats_read_register(void __iomem *regbase,
	int index, int offset)
	{
	return readl_relaxed(regbase + index * 12 + (offset + 1) * 4);
	}

	static ssize_t msm_rpmstats_file_read(struct file file, char __user bufu,
	size_t count, loff_t *ppos)
	{
	struct msm_rpmstats_private_data *prvdata;

	prvdata = file->private_data;
	if (!prvdata)
	return -EINVAL;

	if (!bufu \|\| count == 0)
	return -EINVAL;

	if ((*ppos >= prvdata->len) &&
	(prvdata->read_idx < prvdata->num_records)) {
	prvdata->len = msm_rpmstats_copy_stats(prvdata);
	*ppos = 0;
	}

	return simple_read_from_buffer(bufu, count, ppos,
	prvdata->buf, prvdata->len);
	}

	static int msm_rpmstats_file_open(struct inode inode, struct file file)
	{
	struct msm_rpmstats_private_data *prvdata;
	struct msm_rpmstats_platform_data *pdata;

	pdata = inode->i_private;

	file->private_data = kzalloc(sizeof(*prvdata), GFP_KERNEL);
	if (!file->private_data)
	return -ENOMEM;

	prvdata = file->private_data;

	prvdata->reg_base = ioremap_nocache(pdata->phys_addr_base,
	pdata->phys_size);
	if (!prvdata->reg_base) {
	kfree(file->private_data);
	prvdata = NULL;
	pr_err("%s: ERROR could not ioremap start=%pa, len=%u\n",
	__func__, &pdata->phys_addr_base,
	pdata->phys_size);
	return -EBUSY;
	}

	prvdata->read_idx = prvdata->len = 0;
	prvdata->platform_data = pdata;
	prvdata->num_records = RPM_STATS_NUM_REC;

	return 0;
	}

	static int msm_rpmstats_file_close(struct inode inode, struct file file)
	{
	struct msm_rpmstats_private_data *private = file->private_data;

	if (private->reg_base)
	iounmap(private->reg_base);
	kfree(file->private_data);

	return 0;
	}

	static const struct file_operations msm_rpmstats_fops = {
	.owner = THIS_MODULE,
	.open = msm_rpmstats_file_open,
	.read = msm_rpmstats_file_read,
	.release = msm_rpmstats_file_close,
	.llseek = no_llseek,
	};

	static ssize_t rpmstats_show(struct kobject *kobj,
	struct kobj_attribute attr, char buf)
	{
	struct msm_rpmstats_private_data *prvdata = NULL;
	struct msm_rpmstats_platform_data *pdata = NULL;

	pdata = GET_PDATA_OF_ATTR(attr);

	prvdata =
	kmalloc(sizeof(*prvdata), GFP_KERNEL);
	if (!prvdata)
	return -ENOMEM;

	prvdata->reg_base = ioremap_nocache(pdata->phys_addr_base,
	pdata->phys_size);
	if (!prvdata->reg_base) {
	kfree(prvdata);
	pr_err("%s: ERROR could not ioremap start=%pa, len=%u\n",
	__func__, &pdata->phys_addr_base,
	pdata->phys_size);
	return -EBUSY;
	}

	prvdata->read_idx = prvdata->len = 0;
	prvdata->platform_data = pdata;
	prvdata->num_records = RPM_STATS_NUM_REC;

	if (prvdata->read_idx < prvdata->num_records)
	prvdata->len = msm_rpmstats_copy_stats(prvdata);

	return snprintf(buf, prvdata->len, prvdata->buf);
	}

	static int msm_rpmstats_create_sysfs(struct msm_rpmstats_platform_data *pd)
	{
	struct kobject *module_kobj = NULL;
	struct kobject *rpmstats_kobj = NULL;
	struct msm_rpmstats_kobj_attr *rpms_ka = NULL;
	int ret = 0;

	module_kobj = kset_find_obj(module_kset, KBUILD_MODNAME);
	if (!module_kobj) {
	pr_err("%s: Cannot find module_kset\n", __func__);
	return -ENODEV;
	}

	rpmstats_kobj = kobject_create_and_add("rpmstats", module_kobj);
	if (!rpmstats_kobj) {
	pr_err("%s: Cannot create rpmstats kobject\n", __func__);
	ret = -ENOMEM;
	goto fail;
	}

	rpms_ka = kzalloc(sizeof(*rpms_ka), GFP_KERNEL);
	if (!rpms_ka) {
	kobject_put(rpmstats_kobj);
	ret = -ENOMEM;
	goto fail;
	}

	sysfs_attr_init(&rpms_ka->ka.attr);
	rpms_ka->pd = pd;
	rpms_ka->ka.attr.mode = 0444;
	rpms_ka->ka.attr.name = "stats";
	rpms_ka->ka.show = rpmstats_show;
	rpms_ka->ka.store = NULL;

	ret = sysfs_create_file(rpmstats_kobj, &rpms_ka->ka.attr);

	fail:
	return ret;
	}

	static int msm_rpmstats_probe(struct platform_device *pdev)
	{
	struct dentry *dent = NULL;
	struct msm_rpmstats_platform_data *pdata;
	struct msm_rpmstats_platform_data *pd;
	struct resource res = NULL, offset = NULL;
	u32 offset_addr = 0;
	void __iomem *phys_ptr = NULL;

	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
	return -ENOMEM;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
	"phys_addr_base");
	if (!res)
	return -EINVAL;

	offset = platform_get_resource_byname(pdev, IORESOURCE_MEM,
	"offset_addr");
	if (offset) {
	/* Remap the rpm-stats pointer */
	phys_ptr = ioremap_nocache(offset->start, SZ_4);
	if (!phys_ptr) {
	pr_err("%s: Failed to ioremap address: %x\n",
	__func__, offset_addr);
	return -ENODEV;
	}
	offset_addr = readl_relaxed(phys_ptr);
	iounmap(phys_ptr);
	}

	pdata->phys_addr_base = res->start + offset_addr;
	pdata->phys_size = resource_size(res);

	if (pdev->dev.platform_data)
	pd = pdev->dev.platform_data;

	dent = debugfs_create_file("rpm_stats", 0444, NULL,
	pdata, &msm_rpmstats_fops);
	if (!dent) {
	pr_err("%s: ERROR rpm_stats debugfs_create_file fail\n",
	__func__);
	return -ENOMEM;
	}

	msm_rpmstats_create_sysfs(pdata);

	platform_set_drvdata(pdev, dent);
	return 0;
	}

	static int msm_rpmstats_remove(struct platform_device *pdev)
	{
	struct dentry *dent;

	dent = platform_get_drvdata(pdev);
	debugfs_remove(dent);
	platform_set_drvdata(pdev, NULL);

	return 0;
	}

	static const struct of_device_id rpm_stats_table[] = {
	{ .compatible = "qcom,rpm-stats" },
	{ },
	};

	static struct platform_driver msm_rpmstats_driver = {
	.probe = msm_rpmstats_probe,
	.remove = msm_rpmstats_remove,
	.driver = {
	.name = "msm_rpm_stat",
	.owner = THIS_MODULE,
	.of_match_table = rpm_stats_table,
	},
	};
	builtin_platform_driver(msm_rpmstats_driver);