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author | Eyal Shapira <eyal@wizery.com> | 2012-02-02 12:03:42 +0200 |
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committer | Luciano Coelho <coelho@ti.com> | 2012-02-15 08:38:34 +0200 |
commit | 20ae7e5e4b13937da6882bf84b080eb31feb9a7b (patch) | |
tree | 968d8ee42c76ab68240bede0aae6e1e295a0f220 | |
parent | 5c0dc2fcfec606cf9f2d28ff31bbeb0a6225b27a (diff) | |
download | op-kernel-dev-20ae7e5e4b13937da6882bf84b080eb31feb9a7b.zip op-kernel-dev-20ae7e5e4b13937da6882bf84b080eb31feb9a7b.tar.gz |
wl12xx: add forced_ps debugfs file
Added control over forced_ps option through debugfs.
This can be either 1 or 0.
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
-rw-r--r-- | drivers/net/wireless/wl12xx/debugfs.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c index 02da445..1c26238 100644 --- a/drivers/net/wireless/wl12xx/debugfs.c +++ b/drivers/net/wireless/wl12xx/debugfs.c @@ -376,6 +376,75 @@ static const struct file_operations dynamic_ps_timeout_ops = { .llseek = default_llseek, }; +static ssize_t forced_ps_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct wl1271 *wl = file->private_data; + + return wl1271_format_buffer(user_buf, count, + ppos, "%d\n", + wl->conf.conn.forced_ps); +} + +static ssize_t forced_ps_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct wl1271 *wl = file->private_data; + struct wl12xx_vif *wlvif; + unsigned long value; + int ret, ps_mode; + + ret = kstrtoul_from_user(user_buf, count, 10, &value); + if (ret < 0) { + wl1271_warning("illegal value in forced_ps"); + return -EINVAL; + } + + if (value != 1 && value != 0) { + wl1271_warning("forced_ps should be either 0 or 1"); + return -ERANGE; + } + + mutex_lock(&wl->mutex); + + if (wl->conf.conn.forced_ps == value) + goto out; + + wl->conf.conn.forced_ps = value; + + if (wl->state == WL1271_STATE_OFF) + goto out; + + ret = wl1271_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + /* In case we're already in PSM, trigger it again to switch mode + * immediately without waiting for re-association + */ + + ps_mode = value ? STATION_POWER_SAVE_MODE : STATION_AUTO_PS_MODE; + + wl12xx_for_each_wlvif_sta(wl, wlvif) { + if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) + wl1271_ps_set_mode(wl, wlvif, ps_mode); + } + + wl1271_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); + return count; +} + +static const struct file_operations forced_ps_ops = { + .read = forced_ps_read, + .write = forced_ps_write, + .open = wl1271_open_file_generic, + .llseek = default_llseek, +}; + static ssize_t driver_state_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -1011,6 +1080,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl, DEBUGFS_ADD(beacon_interval, rootdir); DEBUGFS_ADD(beacon_filtering, rootdir); DEBUGFS_ADD(dynamic_ps_timeout, rootdir); + DEBUGFS_ADD(forced_ps, rootdir); streaming = debugfs_create_dir("rx_streaming", rootdir); if (!streaming || IS_ERR(streaming)) |