From: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
For time division multiple access, the wifi and bt take turns to
transmit, but we need to let AP know that wifi is under standby mode by
sending null data to "pretend" entering power saving state using lps
rpwm.
But, the fw does not know if it is the actual power saving mode or just a
fake one to cheat to the AP. Hence, before fw setting the tdma duration,
the fw needs the driver to check the power saving state first.
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Cc: Yan-Hsuan Chuang <yhchuang@xxxxxxxxxxx>
Cc: Birming Chiu <birming@xxxxxxxxxxx>
Cc: Shaofu <shaofu@xxxxxxxxxxx>
Cc: Steven Ting <steventing@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c | 3 +++
drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
index dc9231516e24..35836272df70 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
@@ -1372,6 +1372,7 @@ static void halbtc8723b1ant_power_save_state(struct btc_coexist *btcoexist,
btcoexist->btc_set(btcoexist, BTC_SET_ACT_DISABLE_LOW_POWER,
&low_pwr_disable);
btcoexist->btc_set(btcoexist, BTC_SET_ACT_NORMAL_LPS, NULL);
+ coex_sta->force_lps_on = false;
break;
case BTC_PS_LPS_ON:
halbtc8723b1ant_ps_tdma_chk_pwr_save(btcoexist, true);
@@ -1383,10 +1384,12 @@ static void halbtc8723b1ant_power_save_state(struct btc_coexist *btcoexist,
&low_pwr_disable);
/* power save must executed before psTdma */
btcoexist->btc_set(btcoexist, BTC_SET_ACT_ENTER_LPS, NULL);
+ coex_sta->force_lps_on = true;
break;
case BTC_PS_LPS_OFF:
halbtc8723b1ant_ps_tdma_chk_pwr_save(btcoexist, false);
btcoexist->btc_set(btcoexist, BTC_SET_ACT_LEAVE_LPS, NULL);
+ coex_sta->force_lps_on = false;
break;
default:
break;
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h
index 5683ddf49911..047bcda5563d 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h
@@ -163,6 +163,7 @@ struct coex_sta_8723b_1ant {
u8 bt_retry_cnt;
u8 bt_info_ext;
bool cck_ever_lock;
+ bool force_lps_on;
u32 pop_event_cnt;
u32 crc_ok_cck;
--
2.12.0
