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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: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Eyal Shapira 2012-02-02 12:03:40 +02:00 committed by Luciano Coelho
parent dae728fe67
commit 59a10c66d0
1 changed files with 59 additions and 0 deletions
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59
drivers/net/wireless/wl12xx/debugfs.c
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@ -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);