When operating as station, enter psm before suspending
the device into wowlan state.
Signed-off-by: Eliad Peller <eliad@xxxxxxxxxx>
---
drivers/net/wireless/wl12xx/main.c | 81 ++++++++++++++++++++++++++++++++++++
1 files changed, 81 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 308855a..b4dd1d9 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -1332,6 +1332,79 @@ static struct notifier_block wl1271_dev_notifier = {
.notifier_call = wl1271_dev_notify,
};
+static int wl1271_configure_suspend(struct wl1271 *wl)
+{
+ int ret;
+
+ if (wl->bss_type != BSS_TYPE_STA_BSS)
+ return 0;
+
+ mutex_lock(&wl->mutex);
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out_unlock;
+
+ /* enter psm if needed*/
+ if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
+ DECLARE_COMPLETION_ONSTACK(compl);
+
+ wl->ps_compl = &compl;
+ ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
+ wl->basic_rate, true);
+ if (ret < 0)
+ goto out_sleep;
+
+ /* we must unlock here so we will be able to get events */
+ wl1271_ps_elp_sleep(wl);
+ mutex_unlock(&wl->mutex);
+
+ ret = wait_for_completion_timeout(
+ &compl, msecs_to_jiffies(500));
+ if (ret <= 0) {
+ wl1271_warning("couldn't enter ps mode!");
+ ret = -EBUSY;
+ goto out;
+ }
+
+ /* take mutex again, and wakeup */
+ mutex_lock(&wl->mutex);
+
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out_unlock;
+ }
+out_sleep:
+ wl1271_ps_elp_sleep(wl);
+out_unlock:
+ mutex_unlock(&wl->mutex);
+out:
+ return ret;
+
+}
+
+static void wl1271_configure_resume(struct wl1271 *wl)
+{
+ int ret;
+
+ if (wl->bss_type != BSS_TYPE_STA_BSS)
+ return;
+
+ mutex_lock(&wl->mutex);
+ ret = wl1271_ps_elp_wakeup(wl);
+ if (ret < 0)
+ goto out;
+
+ /* exit psm if it wasn't configured */
+ if (!test_bit(WL1271_FLAG_PSM_REQUESTED, &wl->flags))
+ wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
+ wl->basic_rate, true);
+
+ wl1271_ps_elp_sleep(wl);
+out:
+ mutex_unlock(&wl->mutex);
+}
+
static int wl1271_op_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wow)
{
@@ -1339,6 +1412,12 @@ static int wl1271_op_suspend(struct ieee80211_hw *hw,
wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
wl->wow_enabled = !!wow;
if (wl->wow_enabled) {
+ int ret;
+ ret = wl1271_configure_suspend(wl);
+ if (ret < 0) {
+ wl1271_warning("couldn't prepare device to suspend");
+ return ret;
+ }
/* flush any remaining work */
wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
flush_delayed_work(&wl->scan_complete_work);
@@ -1390,6 +1469,8 @@ static int wl1271_op_resume(struct ieee80211_hw *hw)
wl1271_irq(0, wl);
wl1271_enable_interrupts(wl);
}
+
+ wl1271_configure_resume(wl);
}
return 0;
--
1.7.0.4
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