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Commit c84368e0 authored by Eliad Peller's avatar Eliad Peller Committed by Luciano Coelho
Browse files

wl12xx: add rx_streaming debugfs entry 



Allow control over rx_streaming interval and operation mode
(always/only on coex) via debugfs.

e.g.
echo 100 > /debug/ieee80211/phy0/wl12xx/rx_streaming/interval
echo 1 > /debug/ieee80211/phy0/wl12xx/rx_streaming/always

Signed-off-by: default avatarEliad Peller <eliad@wizery.com>
Signed-off-by: default avatarLuciano Coelho <coelho@ti.com>
parent 77ddaa10

drivers/net/wireless/wl12xx/debugfs.c

+135 −1
Original line number Diff line number Diff line
@@ -71,6 +71,14 @@ static const struct file_operations name## _ops = { \ 
	if (!entry || IS_ERR(entry))					\

		goto err;						\



#define DEBUGFS_ADD_PREFIX(prefix, name, parent)			\

	do {								\

		entry = debugfs_create_file(#name, 0400, parent,	\

				    wl, &prefix## _## name## _ops);	\

		if (!entry || IS_ERR(entry))				\

			goto err;					\

	} while (0);



#define DEBUGFS_FWSTATS_FILE(sub, name, fmt)				\

static ssize_t sub## _ ##name## _read(struct file *file,		\

				      char __user *userbuf,		\
@@ -527,11 +535,129 @@ static const struct file_operations beacon_interval_ops = { 
	.llseek = default_llseek,

};



static ssize_t rx_streaming_interval_write(struct file *file,

			   const char __user *user_buf,

			   size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	char buf[10];

	size_t len;

	unsigned long value;

	int ret;



	len = min(count, sizeof(buf) - 1);

	if (copy_from_user(buf, user_buf, len))

		return -EFAULT;

	buf[len] = '\0';



	ret = kstrtoul(buf, 0, &value);

	if (ret < 0) {

		wl1271_warning("illegal value in rx_streaming_interval!");

		return -EINVAL;

	}



	/* valid values: 0, 10-100 */

	if (value && (value < 10 || value > 100)) {

		wl1271_warning("value is not in range!");

		return -ERANGE;

	}



	mutex_lock(&wl->mutex);



	wl->conf.rx_streaming.interval = value;



	ret = wl1271_ps_elp_wakeup(wl);

	if (ret < 0)

		goto out;



	wl1271_recalc_rx_streaming(wl);



	wl1271_ps_elp_sleep(wl);

out:

	mutex_unlock(&wl->mutex);

	return count;

}



static ssize_t rx_streaming_interval_read(struct file *file,

			    char __user *userbuf,

			    size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	return wl1271_format_buffer(userbuf, count, ppos,

				    "%d\n", wl->conf.rx_streaming.interval);

}



static const struct file_operations rx_streaming_interval_ops = {

	.read = rx_streaming_interval_read,

	.write = rx_streaming_interval_write,

	.open = wl1271_open_file_generic,

	.llseek = default_llseek,

};



static ssize_t rx_streaming_always_write(struct file *file,

			   const char __user *user_buf,

			   size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	char buf[10];

	size_t len;

	unsigned long value;

	int ret;



	len = min(count, sizeof(buf) - 1);

	if (copy_from_user(buf, user_buf, len))

		return -EFAULT;

	buf[len] = '\0';



	ret = kstrtoul(buf, 0, &value);

	if (ret < 0) {

		wl1271_warning("illegal value in rx_streaming_write!");

		return -EINVAL;

	}



	/* valid values: 0, 10-100 */

	if (!(value == 0 || value == 1)) {

		wl1271_warning("value is not in valid!");

		return -EINVAL;

	}



	mutex_lock(&wl->mutex);



	wl->conf.rx_streaming.always = value;



	ret = wl1271_ps_elp_wakeup(wl);

	if (ret < 0)

		goto out;



	wl1271_recalc_rx_streaming(wl);



	wl1271_ps_elp_sleep(wl);

out:

	mutex_unlock(&wl->mutex);

	return count;

}



static ssize_t rx_streaming_always_read(struct file *file,

			    char __user *userbuf,

			    size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	return wl1271_format_buffer(userbuf, count, ppos,

				    "%d\n", wl->conf.rx_streaming.always);

}



static const struct file_operations rx_streaming_always_ops = {

	.read = rx_streaming_always_read,

	.write = rx_streaming_always_write,

	.open = wl1271_open_file_generic,

	.llseek = default_llseek,

};



static int wl1271_debugfs_add_files(struct wl1271 *wl,

				     struct dentry *rootdir)

{

	int ret = 0;

	struct dentry *entry, *stats;

	struct dentry *entry, *stats, *streaming;



	stats = debugfs_create_dir("fw-statistics", rootdir);

	if (!stats || IS_ERR(stats)) {
@@ -640,6 +766,14 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl, 
	DEBUGFS_ADD(dtim_interval, rootdir);

	DEBUGFS_ADD(beacon_interval, rootdir);



	streaming = debugfs_create_dir("rx_streaming", rootdir);

	if (!streaming || IS_ERR(streaming))

		goto err;



	DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming);

	DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming);





	return 0;



err: