drivers/amlogic/media/common/codec_mm/configs/configs_module.c - manifest_repos/kernel - Git at Google

 /*
  * drivers/amlogic/media/common/codec_mm/configs/configs_module.c
  *
  * Copyright (C) 2017 Amlogic, Inc. 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 as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * 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/kernel.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/uaccess.h>
 #include <linux/amlogic/media/codec_mm/configs.h>
 #include <linux/amlogic/media/codec_mm/configs_api.h>
 #define MAX_OPENED_CNT 65536
 #include "configs_priv.h"
 #define MODULE_NAME "media-configs-dev"

 static struct class *config_dev_class;
 static unsigned int config_major;
 struct mediaconfig_node {
 	const char *parent;
 	const char *name;
 	const char *dev_name;
 	int rw_flags;
 	atomic_t opened_cnt;
 	struct device *class_dev;
 	struct mconfig_node node;

 };

 static ssize_t all_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_nodes(NULL, buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }

 static ssize_t media_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }

 static ssize_t video_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.video", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }
 static ssize_t decoder_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.decoder", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }
 static ssize_t vdec_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.vdec", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }
 static ssize_t tsync_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.tsync", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }


 static ssize_t amports_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.amports", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }
 static ssize_t parser_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.parser", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }


 static ssize_t show_config(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_nodes(NULL, buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }

 static ssize_t store_config(struct class *class,
 			struct class_attribute *attr,
 			const char *buf, size_t size)
 {
 	ssize_t ret;

 	ret = configs_set_path_valonpath(buf);
 	if (ret >= 0)
 		return size;
 	return ret;
 }

 static ssize_t show_config_debug(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	return config_dump(buf, PAGE_SIZE);
 }

 static ssize_t store_config_debug(struct class *class,
 			struct class_attribute *attr,
 			const char *buf, size_t size)
 {
 	configs_config_setstr(buf);
 	return size;
 }

 static ssize_t audio_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.audio", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }
 static ssize_t vfm_show(struct class *class,
 			struct class_attribute *attr, char *buf)
 {
 	ssize_t s;

 	s = configs_list_path_nodes("media.vfm", buf, PAGE_SIZE,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (s > 0)
 		return s;
 	return -EPERM;
 }

 static struct class_attribute configs_class_attrs[] = {
 	__ATTR_RO(all),
 	__ATTR_RO(media),
 	__ATTR_RO(video),
 	__ATTR_RO(decoder),
 	__ATTR_RO(amports),
 	__ATTR_RO(tsync),
 	__ATTR_RO(parser),
 	__ATTR_RO(vdec),
 	__ATTR_RO(audio),
 	__ATTR_RO(vfm),
 	__ATTR(config, 0664,
 	show_config, store_config),
 	__ATTR(debug, 0664,
 	show_config_debug, store_config_debug),
 	__ATTR_NULL
 };

 static struct class media_configs_class = {
 		.name = "media-configs",
 		.class_attrs = configs_class_attrs,
 };

 static struct mediaconfig_node mediaconfig_nodes[] = {
 	{"", "media", "media", CONFIG_FOR_RW},
 	{"media", "decoder", "media.decoder", CONFIG_FOR_RW},
 	{"media", "parser", "media.parser", CONFIG_FOR_RW},
 	{"media", "video", "media.video", CONFIG_FOR_RW},
 	{"media", "amports", "media.amports", CONFIG_FOR_RW},
 	{"media", "tsync", "media.tsync", CONFIG_FOR_RW},
 	{"media", "codec_mm", "media.codec_mm", CONFIG_FOR_RW},
 	{"media", "audio", "media.audio", CONFIG_FOR_RW},
 	{"media", "vfm", "media.vfm", CONFIG_FOR_RW},
 };

 struct config_file_private {
 	struct mediaconfig_node *node;
 	char common[128];
 	pid_t pid;
 	pid_t tgid;
 	long opened_jiffies;
 	long last_access_jiffies;
 	long access_get_cnt;
 	long access_set_cnt;
 	long access_dump_cnt;
 	long error_cnt;
 	int enable_trace_get;
 	int enable_trace_set;
 	int last_read_end;
 };

 static int configs_open(struct inode *inode, struct file *file)
 {
 	struct mediaconfig_node *node = &mediaconfig_nodes[iminor(inode)];
 	struct config_file_private *priv;

 	if (atomic_read(&node->opened_cnt) > MAX_OPENED_CNT) {
 		pr_err("too many files opened.!!\n");
 		return -EMFILE;
 	}
 	priv = kzalloc(sizeof(struct config_file_private), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 	file->private_data = priv;
 	priv->pid = current->pid;
 	priv->tgid = current->tgid;
 	priv->opened_jiffies = jiffies;
 	priv->node = node;
 	atomic_inc(&node->opened_cnt);
 	configs_inc_node_ref(&node->node);
 	return 0;
 }
 static ssize_t configs_read(struct file *file, char __user *buf,
 			size_t count, loff_t *ppos)
 {
 	struct config_file_private *priv = file->private_data;
 	struct mediaconfig_node *node = priv->node;
 	int ret;

 	if (*ppos > 0)
 		return 0;/*don't support seek read. read end.*/
 	if (!access_ok(VERIFY_WRITE, buf, count))
 		return -EIO;
 	ret = configs_list_nodes(&node->node, buf, count,
 		LIST_MODE_NODE_CMDVAL_ALL);
 	if (ret > 0)
 		*ppos = ret;
 	return ret;
 }

 static int configs_close(struct inode *inode, struct file *file)
 {
 	struct config_file_private *priv = file->private_data;
 	struct mediaconfig_node *node = priv->node;

 	configs_dec_node_ref(&node->node);
 	atomic_dec(&node->opened_cnt);

 	kfree(priv);

 	return 0;
 }
 static long configs_ioctl(struct file *file, unsigned int cmd, ulong arg)
 {
 	struct config_file_private *priv = file->private_data;
 	struct mediaconfig_node *node = priv->node;
 	struct media_config_io_str io;
 	struct media_config_io_str *user_io = (void *)arg;
 	int r = -1;

 	priv->last_access_jiffies = jiffies;
 	switch (cmd) {
 	case MEDIA_CONFIG_SET_CMD_STR:
 		priv->access_set_cnt++;
 		r = copy_from_user(io.cmd_path,
 			user_io->cmd_path, sizeof(io.cmd_path));
 		r |= copy_from_user(io.val, user_io->val, sizeof(io.val));
 		/*pr_info("set%s:%s dev=%s\n", io.cmd_path,*/
 		/*io.val, node->dev_name);*/
 		if (r) {
 			r = -EIO;
 			break;
 		}
 		if (!strncmp(io.cmd_path, node->dev_name,
 		strlen(node->dev_name)))
 			r = configs_set_node_nodepath_str(NULL,
 				io.cmd_path,
 				io.val);
 		else
 		    pr_info("set %s %s  not match devname=%s\n",
 		io.cmd_path, io.val, node->dev_name);
 		break;
 	case MEDIA_CONFIG_GET_CMD_STR:
 		r = -1;
 		priv->access_get_cnt++;
 		r = copy_from_user(&io.cmd_path,
 				user_io->cmd_path, sizeof(io.cmd_path));
 		io.cmd_path[sizeof(io.cmd_path) - 1] = '\0';
 		if (r) {
 			r = -EIO;
 			break;
 		}
 		io.val[0] = '\0';
 		if (!strncmp(io.cmd_path, node->dev_name,
 		strlen(node->dev_name))) {
 			r = configs_get_node_nodepath_str(NULL,
 				io.cmd_path,
 				io.val,
 				sizeof(io.val));

 		/*pr_info("configs_get_node_nodepath_str*/
 		/*ret %x [%s]\n", r, io.val);*/
 		if (r > 0 && r <= sizeof(io.val) - 1) {
 			/*+1 for end str.*/
 			if (copy_to_user(user_io->val, io.val, r + 1) != 0) {
 				r = -EIO;
 				break;
 				}
 				put_user(r, &user_io->ret);
 				r = 0;
 			} else {
 				 put_user(-1, &user_io->ret);
 			}
 		} else
 			pr_info("set %s %s  not match devname=%s\n",
 			io.cmd_path, io.val, node->dev_name);
 		break;
 	default:
 		r = -EINVAL;
 		pr_err("unsupport cmd %x\n", cmd);
 	}
 	if (r < 0)
 		priv->error_cnt++;
 	return r;
 }


 #ifdef CONFIG_COMPAT
 static long configs_compat_ioctl(struct file *file,
 		unsigned int cmd, ulong arg)
 {
 	return configs_ioctl(file, cmd, (ulong)compat_ptr(arg));
 }
 #endif
 static const struct file_operations configs_fops = {
 	.owner = THIS_MODULE,
 	.open = configs_open,
 	.read = configs_read,
 	.release = configs_close,
 	.unlocked_ioctl = configs_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl = configs_compat_ioctl,
 #endif
 };


 static int __init configs_init_devices(void)
 {
 	int i;
 	int num = sizeof(mediaconfig_nodes)/sizeof(struct mediaconfig_node);

 	int r;

 	r = class_register(&media_configs_class);
 	if (r) {
 		pr_err("configs class create fail.\n");
 		goto error1;
 	}

 	r = register_chrdev(0, MODULE_NAME, &configs_fops);
 	if (r < 0) {
 		pr_err("Can't allocate major for config device\n");
 		goto error1;
 	}
 	config_major = r;

 	config_dev_class = class_create(THIS_MODULE, MODULE_NAME);
 	num = sizeof(mediaconfig_nodes)/sizeof(struct mediaconfig_node);
 	for (i = 0; i < num; i++) {
 		struct mediaconfig_node *mnode = &mediaconfig_nodes[i];

 		mnode->class_dev = device_create(config_dev_class, NULL,
 				MKDEV(config_major, i), NULL,
 				mnode->dev_name);
 		if (mnode->class_dev == NULL) {
 			pr_err("device_create %s failed\n", mnode->dev_name);
 			r = -1;
 			goto error2;
 		}
 	}
 	return 0;
 #if 0
 error3:
 	for (mnode = &mediaconfig_nodes[0], i = 0; i < num; i++, mnode++)
 		device_destroy(config_dev_class, MKDEV(config_major, i));
 	class_destroy(config_dev_class);
 #endif
 error2:
 	unregister_chrdev(config_major, MODULE_NAME);
 error1:
 	class_destroy(&media_configs_class);
 	return r;
 }
 module_init(configs_init_devices);

 static int __init media_configs_system_init(void)
 {
 	int i;
 	int num = sizeof(mediaconfig_nodes)/sizeof(struct mediaconfig_node);
 	struct mediaconfig_node *mnode;
 	int r;

 	pr_info("media_configs_system_init\n");
 	configs_config_system_init();
 	for (i = 0; i < num; i++) {
 		mnode = &mediaconfig_nodes[i];
 		configs_init_new_node(&mnode->node, mnode->name,
 				mnode->rw_flags);
 		r = configs_register_path_node(mnode->parent,
 					&mnode->node);
 		if (r < 0) {
 			pr_err("ERR!!!.register node[%s] to [%s] failed!\n",
 				mnode->name, mnode->parent);
 			return r;
 		}
 	}

 	return 0;
 }

 arch_initcall(media_configs_system_init);
 MODULE_DESCRIPTION("AMLOGIC config modules driver");
 MODULE_LICENSE("GPL");
	/*
	* drivers/amlogic/media/common/codec_mm/configs/configs_module.c
	*
	* Copyright (C) 2017 Amlogic, Inc. 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 as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* 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/kernel.h>
	#include <linux/module.h>
	#include <linux/types.h>
	#include <linux/fs.h>
	#include <linux/init.h>
	#include <linux/device.h>
	#include <linux/slab.h>
	#include <linux/vmalloc.h>
	#include <linux/mm.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/delay.h>
	#include <linux/uaccess.h>
	#include <linux/amlogic/media/codec_mm/configs.h>
	#include <linux/amlogic/media/codec_mm/configs_api.h>
	#define MAX_OPENED_CNT 65536
	#include "configs_priv.h"
	#define MODULE_NAME "media-configs-dev"

	static struct class *config_dev_class;
	static unsigned int config_major;
	struct mediaconfig_node {
	const char *parent;
	const char *name;
	const char *dev_name;
	int rw_flags;
	atomic_t opened_cnt;
	struct device *class_dev;
	struct mconfig_node node;

	};

	static ssize_t all_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_nodes(NULL, buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}

	static ssize_t media_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}

	static ssize_t video_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.video", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}
	static ssize_t decoder_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.decoder", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}
	static ssize_t vdec_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.vdec", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}
	static ssize_t tsync_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.tsync", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}


	static ssize_t amports_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.amports", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}
	static ssize_t parser_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.parser", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}



	static ssize_t show_config(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_nodes(NULL, buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}

	static ssize_t store_config(struct class *class,
	struct class_attribute *attr,
	const char *buf, size_t size)
	{
	ssize_t ret;

	ret = configs_set_path_valonpath(buf);
	if (ret >= 0)
	return size;
	return ret;
	}

	static ssize_t show_config_debug(struct class *class,
	struct class_attribute attr, char buf)
	{
	return config_dump(buf, PAGE_SIZE);
	}

	static ssize_t store_config_debug(struct class *class,
	struct class_attribute *attr,
	const char *buf, size_t size)
	{
	configs_config_setstr(buf);
	return size;
	}

	static ssize_t audio_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.audio", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}
	static ssize_t vfm_show(struct class *class,
	struct class_attribute attr, char buf)
	{
	ssize_t s;

	s = configs_list_path_nodes("media.vfm", buf, PAGE_SIZE,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (s > 0)
	return s;
	return -EPERM;
	}

	static struct class_attribute configs_class_attrs[] = {
	__ATTR_RO(all),
	__ATTR_RO(media),
	__ATTR_RO(video),
	__ATTR_RO(decoder),
	__ATTR_RO(amports),
	__ATTR_RO(tsync),
	__ATTR_RO(parser),
	__ATTR_RO(vdec),
	__ATTR_RO(audio),
	__ATTR_RO(vfm),
	__ATTR(config, 0664,
	show_config, store_config),
	__ATTR(debug, 0664,
	show_config_debug, store_config_debug),
	__ATTR_NULL
	};

	static struct class media_configs_class = {
	.name = "media-configs",
	.class_attrs = configs_class_attrs,
	};

	static struct mediaconfig_node mediaconfig_nodes[] = {
	{"", "media", "media", CONFIG_FOR_RW},
	{"media", "decoder", "media.decoder", CONFIG_FOR_RW},
	{"media", "parser", "media.parser", CONFIG_FOR_RW},
	{"media", "video", "media.video", CONFIG_FOR_RW},
	{"media", "amports", "media.amports", CONFIG_FOR_RW},
	{"media", "tsync", "media.tsync", CONFIG_FOR_RW},
	{"media", "codec_mm", "media.codec_mm", CONFIG_FOR_RW},
	{"media", "audio", "media.audio", CONFIG_FOR_RW},
	{"media", "vfm", "media.vfm", CONFIG_FOR_RW},
	};

	struct config_file_private {
	struct mediaconfig_node *node;
	char common[128];
	pid_t pid;
	pid_t tgid;
	long opened_jiffies;
	long last_access_jiffies;
	long access_get_cnt;
	long access_set_cnt;
	long access_dump_cnt;
	long error_cnt;
	int enable_trace_get;
	int enable_trace_set;
	int last_read_end;
	};

	static int configs_open(struct inode inode, struct file file)
	{
	struct mediaconfig_node *node = &mediaconfig_nodes[iminor(inode)];
	struct config_file_private *priv;

	if (atomic_read(&node->opened_cnt) > MAX_OPENED_CNT) {
	pr_err("too many files opened.!!\n");
	return -EMFILE;
	}
	priv = kzalloc(sizeof(struct config_file_private), GFP_KERNEL);
	if (!priv)
	return -ENOMEM;
	file->private_data = priv;
	priv->pid = current->pid;
	priv->tgid = current->tgid;
	priv->opened_jiffies = jiffies;
	priv->node = node;
	atomic_inc(&node->opened_cnt);
	configs_inc_node_ref(&node->node);
	return 0;
	}
	static ssize_t configs_read(struct file file, char __user buf,
	size_t count, loff_t *ppos)
	{
	struct config_file_private *priv = file->private_data;
	struct mediaconfig_node *node = priv->node;
	int ret;

	if (*ppos > 0)
	return 0;/don't support seek read. read end./
	if (!access_ok(VERIFY_WRITE, buf, count))
	return -EIO;
	ret = configs_list_nodes(&node->node, buf, count,
	LIST_MODE_NODE_CMDVAL_ALL);
	if (ret > 0)
	*ppos = ret;
	return ret;
	}

	static int configs_close(struct inode inode, struct file file)
	{
	struct config_file_private *priv = file->private_data;
	struct mediaconfig_node *node = priv->node;

	configs_dec_node_ref(&node->node);
	atomic_dec(&node->opened_cnt);

	kfree(priv);

	return 0;
	}
	static long configs_ioctl(struct file *file, unsigned int cmd, ulong arg)
	{
	struct config_file_private *priv = file->private_data;
	struct mediaconfig_node *node = priv->node;
	struct media_config_io_str io;
	struct media_config_io_str user_io = (void )arg;
	int r = -1;

	priv->last_access_jiffies = jiffies;
	switch (cmd) {
	case MEDIA_CONFIG_SET_CMD_STR:
	priv->access_set_cnt++;
	r = copy_from_user(io.cmd_path,
	user_io->cmd_path, sizeof(io.cmd_path));
	r \|= copy_from_user(io.val, user_io->val, sizeof(io.val));
	/pr_info("set%s:%s dev=%s\n", io.cmd_path,/
	/io.val, node->dev_name);/
	if (r) {
	r = -EIO;
	break;
	}
	if (!strncmp(io.cmd_path, node->dev_name,
	strlen(node->dev_name)))
	r = configs_set_node_nodepath_str(NULL,
	io.cmd_path,
	io.val);
	else
	pr_info("set %s %s not match devname=%s\n",
	io.cmd_path, io.val, node->dev_name);
	break;
	case MEDIA_CONFIG_GET_CMD_STR:
	r = -1;
	priv->access_get_cnt++;
	r = copy_from_user(&io.cmd_path,
	user_io->cmd_path, sizeof(io.cmd_path));
	io.cmd_path[sizeof(io.cmd_path) - 1] = '\0';
	if (r) {
	r = -EIO;
	break;
	}
	io.val[0] = '\0';
	if (!strncmp(io.cmd_path, node->dev_name,
	strlen(node->dev_name))) {
	r = configs_get_node_nodepath_str(NULL,
	io.cmd_path,
	io.val,
	sizeof(io.val));

	/pr_info("configs_get_node_nodepath_str/
	/ret %x [%s]\n", r, io.val);/
	if (r > 0 && r <= sizeof(io.val) - 1) {
	/+1 for end str./
	if (copy_to_user(user_io->val, io.val, r + 1) != 0) {
	r = -EIO;
	break;
	}
	put_user(r, &user_io->ret);
	r = 0;
	} else {
	put_user(-1, &user_io->ret);
	}
	} else
	pr_info("set %s %s not match devname=%s\n",
	io.cmd_path, io.val, node->dev_name);
	break;
	default:
	r = -EINVAL;
	pr_err("unsupport cmd %x\n", cmd);
	}
	if (r < 0)
	priv->error_cnt++;
	return r;
	}



	#ifdef CONFIG_COMPAT
	static long configs_compat_ioctl(struct file *file,
	unsigned int cmd, ulong arg)
	{
	return configs_ioctl(file, cmd, (ulong)compat_ptr(arg));
	}
	#endif
	static const struct file_operations configs_fops = {
	.owner = THIS_MODULE,
	.open = configs_open,
	.read = configs_read,
	.release = configs_close,
	.unlocked_ioctl = configs_ioctl,
	#ifdef CONFIG_COMPAT
	.compat_ioctl = configs_compat_ioctl,
	#endif
	};


	static int __init configs_init_devices(void)
	{
	int i;
	int num = sizeof(mediaconfig_nodes)/sizeof(struct mediaconfig_node);

	int r;

	r = class_register(&media_configs_class);
	if (r) {
	pr_err("configs class create fail.\n");
	goto error1;
	}

	r = register_chrdev(0, MODULE_NAME, &configs_fops);
	if (r < 0) {
	pr_err("Can't allocate major for config device\n");
	goto error1;
	}
	config_major = r;

	config_dev_class = class_create(THIS_MODULE, MODULE_NAME);
	num = sizeof(mediaconfig_nodes)/sizeof(struct mediaconfig_node);
	for (i = 0; i < num; i++) {
	struct mediaconfig_node *mnode = &mediaconfig_nodes[i];

	mnode->class_dev = device_create(config_dev_class, NULL,
	MKDEV(config_major, i), NULL,
	mnode->dev_name);
	if (mnode->class_dev == NULL) {
	pr_err("device_create %s failed\n", mnode->dev_name);
	r = -1;
	goto error2;
	}
	}
	return 0;
	#if 0
	error3:
	for (mnode = &mediaconfig_nodes[0], i = 0; i < num; i++, mnode++)
	device_destroy(config_dev_class, MKDEV(config_major, i));
	class_destroy(config_dev_class);
	#endif
	error2:
	unregister_chrdev(config_major, MODULE_NAME);
	error1:
	class_destroy(&media_configs_class);
	return r;
	}
	module_init(configs_init_devices);

	static int __init media_configs_system_init(void)
	{
	int i;
	int num = sizeof(mediaconfig_nodes)/sizeof(struct mediaconfig_node);
	struct mediaconfig_node *mnode;
	int r;

	pr_info("media_configs_system_init\n");
	configs_config_system_init();
	for (i = 0; i < num; i++) {
	mnode = &mediaconfig_nodes[i];
	configs_init_new_node(&mnode->node, mnode->name,
	mnode->rw_flags);
	r = configs_register_path_node(mnode->parent,
	&mnode->node);
	if (r < 0) {
	pr_err("ERR!!!.register node[%s] to [%s] failed!\n",
	mnode->name, mnode->parent);
	return r;
	}
	}

	return 0;
	}

	arch_initcall(media_configs_system_init);
	MODULE_DESCRIPTION("AMLOGIC config modules driver");
	MODULE_LICENSE("GPL");