Commit 59a10c66 authored by Eyal Shapira's avatar Eyal Shapira Committed by Luciano Coelho
Browse files

wl12xx: add suspend_listen_interval debugfs file 



Add read/write to suspend_dtim_interval file which
controls the number of DTIM periods between wakeups
while the host is suspended.
The value while the host is resumed is controlled
by the file dtim_interval which existed previously.

Signed-off-by: default avatarEyal Shapira <eyal@wizery.com>
Signed-off-by: default avatarEliad Peller <eliad@wizery.com>
Signed-off-by: default avatarLuciano Coelho <coelho@ti.com>
parent dae728fe

drivers/net/wireless/wl12xx/debugfs.c

+59 −0
Original line number Diff line number Diff line
@@ -625,6 +625,64 @@ static const struct file_operations dtim_interval_ops = { 
	.llseek = default_llseek,

};







static ssize_t suspend_dtim_interval_read(struct file *file,

					  char __user *user_buf,

					  size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	u8 value;



	if (wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_DTIM ||

	    wl->conf.conn.suspend_wake_up_event == CONF_WAKE_UP_EVENT_N_DTIM)

		value = wl->conf.conn.suspend_listen_interval;

	else

		value = 0;



	return wl1271_format_buffer(user_buf, count, ppos, "%d\n", value);

}



static ssize_t suspend_dtim_interval_write(struct file *file,

					   const char __user *user_buf,

					   size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	unsigned long value;

	int ret;



	ret = kstrtoul_from_user(user_buf, count, 10, &value);

	if (ret < 0) {

		wl1271_warning("illegal value for suspend_dtim_interval");

		return -EINVAL;

	}



	if (value < 1 || value > 10) {

		wl1271_warning("suspend_dtim value is not in valid range");

		return -ERANGE;

	}



	mutex_lock(&wl->mutex);



	wl->conf.conn.suspend_listen_interval = value;

	/* for some reason there are different event types for 1 and >1 */

	if (value == 1)

		wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_DTIM;

	else

		wl->conf.conn.suspend_wake_up_event = CONF_WAKE_UP_EVENT_N_DTIM;



	mutex_unlock(&wl->mutex);

	return count;

}





static const struct file_operations suspend_dtim_interval_ops = {

	.read = suspend_dtim_interval_read,

	.write = suspend_dtim_interval_write,

	.open = wl1271_open_file_generic,

	.llseek = default_llseek,

};



static ssize_t beacon_interval_read(struct file *file, char __user *user_buf,

				    size_t count, loff_t *ppos)

{
@@ -949,6 +1007,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl, 
	DEBUGFS_ADD(driver_state, rootdir);

	DEBUGFS_ADD(vifs_state, rootdir);

	DEBUGFS_ADD(dtim_interval, rootdir);

	DEBUGFS_ADD(suspend_dtim_interval, rootdir);

	DEBUGFS_ADD(beacon_interval, rootdir);

	DEBUGFS_ADD(beacon_filtering, rootdir);

	DEBUGFS_ADD(dynamic_ps_timeout, rootdir);

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