At present the power save wake uses the listening interval and
the slow path to wake up.
The following using a beacon interval of 100 and
listen interval of 5.
The TBTT set at 100 wake-up sequence;
100 TTBT wake-up set to listen interval.
200 TTBT
300 TTBT
400 TTBT --> call vnt_next_tbtt_wakeup on slow path
Beacon heard and passed through at the approx 500 interval.
500 TTBT
600 TTBT wakeup set to listen interval
The TTBT set at 500 wake-up sequence and always listen flagged on;
100 No TTBT
200 No TTBT
300 No TTBT
400 No TTBT
500 TTBT - beacon heard and passed through
600 No TTBT
A further enhancement because the TTBT is more precise
the dtim_period can be used instead.
When Power save is off the TTBT continues to run at the listen
interval but all the other beacons are passed.
The code in vnt_int_process_data is no longer required.
Signed-off-by: Malcolm Priestley <[email protected]>
---
drivers/staging/vt6656/device.h | 2 --
drivers/staging/vt6656/main_usb.c | 11 +++++++++--
drivers/staging/vt6656/power.c | 12 ++----------
drivers/staging/vt6656/usbpipe.c | 13 -------------
4 files changed, 11 insertions(+), 27 deletions(-)
diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h
index 4d596853a3ee..d19d802b5d4f 100644
--- a/drivers/staging/vt6656/device.h
+++ b/drivers/staging/vt6656/device.h
@@ -383,8 +383,6 @@ 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;
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 7db1e044ad26..b5790d4d7152 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -824,10 +824,17 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
priv->op_mode != NL80211_IFTYPE_AP) {
if (conf->assoc && conf->beacon_rate) {
+ u16 ps_beacon_int = conf->beacon_int;
+
+ if (conf->dtim_period)
+ ps_beacon_int *= conf->dtim_period;
+ else if (hw->conf.listen_interval)
+ ps_beacon_int *= hw->conf.listen_interval;
+
vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
TFTCTL_TSFCNTREN);
- vnt_mac_set_beacon_interval(priv, conf->beacon_int);
+ vnt_mac_set_beacon_interval(priv, ps_beacon_int);
vnt_reset_next_tbtt(priv, conf->beacon_int);
@@ -835,7 +842,7 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
conf->sync_tsf, priv->current_tsf);
vnt_update_next_tbtt(priv,
- conf->sync_tsf, conf->beacon_int);
+ conf->sync_tsf, ps_beacon_int);
} else {
vnt_clear_current_tsf(priv);
diff --git a/drivers/staging/vt6656/power.c b/drivers/staging/vt6656/power.c
index d160a0773943..2f49c870272a 100644
--- a/drivers/staging/vt6656/power.c
+++ b/drivers/staging/vt6656/power.c
@@ -63,16 +63,8 @@ void vnt_enable_power_saving(struct vnt_private *priv, u16 listen_interval)
*/
vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_GO2DOZE);
- if (listen_interval >= 2) {
- /* clear always listen beacon */
- vnt_mac_reg_bits_off(priv, MAC_REG_PSCTL, PSCTL_ALBCN);
-
- /* first time set listen next beacon */
- vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_LNBCN);
- } else {
- /* always listen beacon */
- vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_ALBCN);
- }
+ /* always listen beacon */
+ vnt_mac_reg_bits_on(priv, MAC_REG_PSCTL, PSCTL_ALBCN);
dev_dbg(&priv->usb->dev, "PS:Power Saving Mode Enable...\n");
}
diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c
index e8efdeadb1a7..5603f3cbb33c 100644
--- a/drivers/staging/vt6656/usbpipe.c
+++ b/drivers/staging/vt6656/usbpipe.c
@@ -202,19 +202,6 @@ static void vnt_int_process_data(struct vnt_private *priv)
if (int_data->isr0 & ISR_BNTX && priv->op_mode == NL80211_IFTYPE_AP)
vnt_schedule_command(priv, WLAN_CMD_BECON_SEND);
- 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;
-
- if (priv->wake_up_count)
- --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);
- }
-
priv->current_tsf = le64_to_cpu(int_data->tsf);
low_stats->dot11RTSSuccessCount += int_data->rts_success;
--
2.25.1
Drop this patch v2 sent corrected TTBT.
Regards
Malcolm