drivers/bluetooth/btmrvl_debugfs.c - kernel/msm-4.19 - Gitiles

 /**
  * Marvell Bluetooth driver: debugfs related functions
  *
  * Copyright (C) 2009, Marvell International Ltd.
  *
  * This software file (the "File") is distributed by Marvell International
  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
  * (the "License").  You may use, redistribute and/or modify this File in
  * accordance with the terms and conditions of the License, a copy of which
  * is available by writing to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  *
  *
  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  * this warranty disclaimer.
  **/

 #include <linux/debugfs.h>
 #include <linux/slab.h>

 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>

 #include "btmrvl_drv.h"

 struct btmrvl_debugfs_data {
 	struct dentry *config_dir;
 	struct dentry *status_dir;

 	/* config */
 	struct dentry *psmode;
 	struct dentry *pscmd;
 	struct dentry *hsmode;
 	struct dentry *hscmd;
 	struct dentry *gpiogap;
 	struct dentry *hscfgcmd;

 	/* status */
 	struct dentry *curpsmode;
 	struct dentry *hsstate;
 	struct dentry *psstate;
 	struct dentry *txdnldready;
 };

 static int btmrvl_open_generic(struct inode *inode, struct file *file)
 {
 	file->private_data = inode->i_private;
 	return 0;
 }

 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
 			const char __user *ubuf, size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;

 	memset(buf, 0, sizeof(buf));

 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;

 	ret = strict_strtol(buf, 10, &result);
 	if (ret)
 		return ret;

 	priv->btmrvl_dev.hscfgcmd = result;

 	if (priv->btmrvl_dev.hscfgcmd) {
 		btmrvl_prepare_command(priv);
 		wake_up_interruptible(&priv->main_thread.wait_q);
 	}

 	return count;
 }

 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 						priv->btmrvl_dev.hscfgcmd);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_hscfgcmd_fops = {
 	.read	= btmrvl_hscfgcmd_read,
 	.write	= btmrvl_hscfgcmd_write,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;

 	memset(buf, 0, sizeof(buf));

 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;

 	ret = strict_strtol(buf, 10, &result);
 	if (ret)
 		return ret;

 	priv->btmrvl_dev.psmode = result;

 	return count;
 }

 static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 						priv->btmrvl_dev.psmode);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_psmode_fops = {
 	.read	= btmrvl_psmode_read,
 	.write	= btmrvl_psmode_write,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;

 	memset(buf, 0, sizeof(buf));

 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;

 	ret = strict_strtol(buf, 10, &result);
 	if (ret)
 		return ret;

 	priv->btmrvl_dev.pscmd = result;

 	if (priv->btmrvl_dev.pscmd) {
 		btmrvl_prepare_command(priv);
 		wake_up_interruptible(&priv->main_thread.wait_q);
 	}

 	return count;

 }

 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_pscmd_fops = {
 	.read = btmrvl_pscmd_read,
 	.write = btmrvl_pscmd_write,
 	.open = btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;

 	memset(buf, 0, sizeof(buf));

 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;

 	ret = strict_strtol(buf, 16, &result);
 	if (ret)
 		return ret;

 	priv->btmrvl_dev.gpio_gap = result;

 	return count;
 }

 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
 						priv->btmrvl_dev.gpio_gap);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_gpiogap_fops = {
 	.read	= btmrvl_gpiogap_read,
 	.write	= btmrvl_gpiogap_write,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;

 	memset(buf, 0, sizeof(buf));

 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;

 	ret = strict_strtol(buf, 10, &result);
 	if (ret)
 		return ret;

 	priv->btmrvl_dev.hscmd = result;
 	if (priv->btmrvl_dev.hscmd) {
 		btmrvl_prepare_command(priv);
 		wake_up_interruptible(&priv->main_thread.wait_q);
 	}

 	return count;
 }

 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_hscmd_fops = {
 	.read	= btmrvl_hscmd_read,
 	.write	= btmrvl_hscmd_write,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;

 	memset(buf, 0, sizeof(buf));

 	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
 		return -EFAULT;

 	ret = strict_strtol(buf, 10, &result);
 	if (ret)
 		return ret;

 	priv->btmrvl_dev.hsmode = result;

 	return count;
 }

 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_hsmode_fops = {
 	.read	= btmrvl_hsmode_read,
 	.write	= btmrvl_hsmode_write,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_curpsmode_fops = {
 	.read	= btmrvl_curpsmode_read,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_psstate_fops = {
 	.read	= btmrvl_psstate_read,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_hsstate_fops = {
 	.read	= btmrvl_hsstate_read,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
 						size_t count, loff_t *ppos)
 {
 	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	int ret;

 	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
 					priv->btmrvl_dev.tx_dnld_rdy);

 	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
 }

 static const struct file_operations btmrvl_txdnldready_fops = {
 	.read	= btmrvl_txdnldready_read,
 	.open	= btmrvl_open_generic,
 	.llseek = default_llseek,
 };

 void btmrvl_debugfs_init(struct hci_dev *hdev)
 {
 	struct btmrvl_private *priv = hci_get_drvdata(hdev);
 	struct btmrvl_debugfs_data *dbg;

 	if (!hdev->debugfs)
 		return;

 	dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
 	priv->debugfs_data = dbg;

 	if (!dbg) {
 		BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
 		return;
 	}

 	dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);

 	dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
 						priv, &btmrvl_psmode_fops);
 	dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
 						priv, &btmrvl_pscmd_fops);
 	dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
 						priv, &btmrvl_gpiogap_fops);
 	dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
 						priv, &btmrvl_hsmode_fops);
 	dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
 						priv, &btmrvl_hscmd_fops);
 	dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
 						priv, &btmrvl_hscfgcmd_fops);

 	dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
 	dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
 				dbg->status_dir, priv, &btmrvl_curpsmode_fops);
 	dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
 						priv, &btmrvl_psstate_fops);
 	dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
 						priv, &btmrvl_hsstate_fops);
 	dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
 						dbg->status_dir, priv,
 						&btmrvl_txdnldready_fops);
 }

 void btmrvl_debugfs_remove(struct hci_dev *hdev)
 {
 	struct btmrvl_private *priv = hci_get_drvdata(hdev);
 	struct btmrvl_debugfs_data *dbg = priv->debugfs_data;

 	if (!dbg)
 		return;

 	debugfs_remove(dbg->psmode);
 	debugfs_remove(dbg->pscmd);
 	debugfs_remove(dbg->gpiogap);
 	debugfs_remove(dbg->hsmode);
 	debugfs_remove(dbg->hscmd);
 	debugfs_remove(dbg->hscfgcmd);
 	debugfs_remove(dbg->config_dir);

 	debugfs_remove(dbg->curpsmode);
 	debugfs_remove(dbg->psstate);
 	debugfs_remove(dbg->hsstate);
 	debugfs_remove(dbg->txdnldready);
 	debugfs_remove(dbg->status_dir);

 	kfree(dbg);
 }
	/**
	* Marvell Bluetooth driver: debugfs related functions
	*
	* Copyright (C) 2009, Marvell International Ltd.
	*
	* This software file (the "File") is distributed by Marvell International
	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	* (the "License"). You may use, redistribute and/or modify this File in
	* accordance with the terms and conditions of the License, a copy of which
	* is available by writing to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	*
	*
	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	* this warranty disclaimer.
	**/

	#include <linux/debugfs.h>
	#include <linux/slab.h>

	#include <net/bluetooth/bluetooth.h>
	#include <net/bluetooth/hci_core.h>

	#include "btmrvl_drv.h"

	struct btmrvl_debugfs_data {
	struct dentry *config_dir;
	struct dentry *status_dir;

	/* config */
	struct dentry *psmode;
	struct dentry *pscmd;
	struct dentry *hsmode;
	struct dentry *hscmd;
	struct dentry *gpiogap;
	struct dentry *hscfgcmd;

	/* status */
	struct dentry *curpsmode;
	struct dentry *hsstate;
	struct dentry *psstate;
	struct dentry *txdnldready;
	};

	static int btmrvl_open_generic(struct inode inode, struct file file)
	{
	file->private_data = inode->i_private;
	return 0;
	}

	static ssize_t btmrvl_hscfgcmd_write(struct file *file,
	const char __user ubuf, size_t count, loff_t ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	long result, ret;

	memset(buf, 0, sizeof(buf));

	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
	return -EFAULT;

	ret = strict_strtol(buf, 10, &result);
	if (ret)
	return ret;

	priv->btmrvl_dev.hscfgcmd = result;

	if (priv->btmrvl_dev.hscfgcmd) {
	btmrvl_prepare_command(priv);
	wake_up_interruptible(&priv->main_thread.wait_q);
	}

	return count;
	}

	static ssize_t btmrvl_hscfgcmd_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
	priv->btmrvl_dev.hscfgcmd);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_hscfgcmd_fops = {
	.read = btmrvl_hscfgcmd_read,
	.write = btmrvl_hscfgcmd_write,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_psmode_write(struct file file, const char __user ubuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	long result, ret;

	memset(buf, 0, sizeof(buf));

	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
	return -EFAULT;

	ret = strict_strtol(buf, 10, &result);
	if (ret)
	return ret;

	priv->btmrvl_dev.psmode = result;

	return count;
	}

	static ssize_t btmrvl_psmode_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
	priv->btmrvl_dev.psmode);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_psmode_fops = {
	.read = btmrvl_psmode_read,
	.write = btmrvl_psmode_write,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_pscmd_write(struct file file, const char __user ubuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	long result, ret;

	memset(buf, 0, sizeof(buf));

	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
	return -EFAULT;

	ret = strict_strtol(buf, 10, &result);
	if (ret)
	return ret;

	priv->btmrvl_dev.pscmd = result;

	if (priv->btmrvl_dev.pscmd) {
	btmrvl_prepare_command(priv);
	wake_up_interruptible(&priv->main_thread.wait_q);
	}

	return count;

	}

	static ssize_t btmrvl_pscmd_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_pscmd_fops = {
	.read = btmrvl_pscmd_read,
	.write = btmrvl_pscmd_write,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_gpiogap_write(struct file file, const char __user ubuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	long result, ret;

	memset(buf, 0, sizeof(buf));

	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
	return -EFAULT;

	ret = strict_strtol(buf, 16, &result);
	if (ret)
	return ret;

	priv->btmrvl_dev.gpio_gap = result;

	return count;
	}

	static ssize_t btmrvl_gpiogap_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
	priv->btmrvl_dev.gpio_gap);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_gpiogap_fops = {
	.read = btmrvl_gpiogap_read,
	.write = btmrvl_gpiogap_write,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_hscmd_write(struct file file, const char __user ubuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	long result, ret;

	memset(buf, 0, sizeof(buf));

	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
	return -EFAULT;

	ret = strict_strtol(buf, 10, &result);
	if (ret)
	return ret;

	priv->btmrvl_dev.hscmd = result;
	if (priv->btmrvl_dev.hscmd) {
	btmrvl_prepare_command(priv);
	wake_up_interruptible(&priv->main_thread.wait_q);
	}

	return count;
	}

	static ssize_t btmrvl_hscmd_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_hscmd_fops = {
	.read = btmrvl_hscmd_read,
	.write = btmrvl_hscmd_write,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_hsmode_write(struct file file, const char __user ubuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	long result, ret;

	memset(buf, 0, sizeof(buf));

	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
	return -EFAULT;

	ret = strict_strtol(buf, 10, &result);
	if (ret)
	return ret;

	priv->btmrvl_dev.hsmode = result;

	return count;
	}

	static ssize_t btmrvl_hsmode_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_hsmode_fops = {
	.read = btmrvl_hsmode_read,
	.write = btmrvl_hsmode_write,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_curpsmode_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_curpsmode_fops = {
	.read = btmrvl_curpsmode_read,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_psstate_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_psstate_fops = {
	.read = btmrvl_psstate_read,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_hsstate_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_hsstate_fops = {
	.read = btmrvl_hsstate_read,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	static ssize_t btmrvl_txdnldready_read(struct file file, char __user userbuf,
	size_t count, loff_t *ppos)
	{
	struct btmrvl_private *priv = file->private_data;
	char buf[16];
	int ret;

	ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
	priv->btmrvl_dev.tx_dnld_rdy);

	return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
	}

	static const struct file_operations btmrvl_txdnldready_fops = {
	.read = btmrvl_txdnldready_read,
	.open = btmrvl_open_generic,
	.llseek = default_llseek,
	};

	void btmrvl_debugfs_init(struct hci_dev *hdev)
	{
	struct btmrvl_private *priv = hci_get_drvdata(hdev);
	struct btmrvl_debugfs_data *dbg;

	if (!hdev->debugfs)
	return;

	dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
	priv->debugfs_data = dbg;

	if (!dbg) {
	BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
	return;
	}

	dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);

	dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
	priv, &btmrvl_psmode_fops);
	dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
	priv, &btmrvl_pscmd_fops);
	dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
	priv, &btmrvl_gpiogap_fops);
	dbg->hsmode = debugfs_create_file("hsmode", 0644, dbg->config_dir,
	priv, &btmrvl_hsmode_fops);
	dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
	priv, &btmrvl_hscmd_fops);
	dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
	priv, &btmrvl_hscfgcmd_fops);

	dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
	dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
	dbg->status_dir, priv, &btmrvl_curpsmode_fops);
	dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
	priv, &btmrvl_psstate_fops);
	dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
	priv, &btmrvl_hsstate_fops);
	dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
	dbg->status_dir, priv,
	&btmrvl_txdnldready_fops);
	}

	void btmrvl_debugfs_remove(struct hci_dev *hdev)
	{
	struct btmrvl_private *priv = hci_get_drvdata(hdev);
	struct btmrvl_debugfs_data *dbg = priv->debugfs_data;

	if (!dbg)
	return;

	debugfs_remove(dbg->psmode);
	debugfs_remove(dbg->pscmd);
	debugfs_remove(dbg->gpiogap);
	debugfs_remove(dbg->hsmode);
	debugfs_remove(dbg->hscmd);
	debugfs_remove(dbg->hscfgcmd);
	debugfs_remove(dbg->config_dir);

	debugfs_remove(dbg->curpsmode);
	debugfs_remove(dbg->psstate);
	debugfs_remove(dbg->hsstate);
	debugfs_remove(dbg->txdnldready);
	debugfs_remove(dbg->status_dir);

	kfree(dbg);
	}