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staging: vt6656: implement power saving code. 

The device should ready to listen to next beacon so on count down of
wake_up_count == 1.

schedule command WLAN_CMD_TBTT_WAKEUP which calls vnt_next_tbtt_wakeup which
wakes the device.

This restores this back to vendors code with a slight difference the
count down is in the interrupt handler.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Malcolm Priestley 2015-09-27 09:17:41 +01:00 committed by Greg Kroah-Hartman
parent c15158797d
commit 43c93d9bf5
3 changed files with 14 additions and 4 deletions
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2
drivers/staging/vt6656/device.h
View File

@ -389,6 +389,8 @@ struct vnt_private {
u8 bb_pre_ed_rssi;
u8 bb_pre_ed_index;
u16 wake_up_count;
/* command timer */
struct delayed_work run_command_work;

14
drivers/staging/vt6656/int.c
View File

@ -149,10 +149,18 @@ void vnt_int_process_data(struct vnt_private *priv)
priv->op_mode == NL80211_IFTYPE_AP)
vnt_schedule_command(priv, WLAN_CMD_BECON_SEND);
if (int_data->isr0 & ISR_TBTT) {
if (priv->hw->conf.flags & IEEE80211_CONF_PS)
if (int_data->isr0 & ISR_TBTT &&
priv->hw->conf.flags & IEEE80211_CONF_PS) {
if (!priv->wake_up_count)
priv->wake_up_count =
priv->hw->conf.listen_interval;
--priv->wake_up_count;
/* Turn on wake up to listen next beacon */
if (priv->wake_up_count == 1)
vnt_schedule_command(priv,
WLAN_CMD_TBTT_WAKEUP);
WLAN_CMD_TBTT_WAKEUP);
}
priv->current_tsf = le64_to_cpu(int_data->tsf);

2
drivers/staging/vt6656/power.c
View File

@ -134,7 +134,7 @@ int vnt_next_tbtt_wakeup(struct vnt_private *priv)
struct ieee80211_conf *conf = &hw->conf;
int wake_up = false;
if (conf->listen_interval == 1) {
if (conf->listen_interval > 1) {
/* Turn on wake up to listen next beacon */
vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_LNBCN);
wake_up = true;