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Commit 4da5e7ea authored by Yan-Hsuan Chuang's avatar Yan-Hsuan Chuang Committed by Kalle Valo
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rtlwifi: btcoex: 21a 1ant: avoid LPS/IPS mismatch for pnp notify 



When driver is going to sleep, it does not leave LPS/IPS, thus the
BTCoex may have mismatch when driver wakes up. To avoid that, BTCoex
needs to clear the IPS/LPS state when it receives a pnp notify, then
it can properly set up the hw when driver wakes up.

Signed-off-by: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Cc: Pkshih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent da0fd9cc

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a1ant.c

+9 −2
Original line number Diff line number Diff line
@@ -2905,11 +2905,18 @@ void ex_btc8821a1ant_pnp_notify(struct btc_coexist *btcoexist, u8 pnp_state) 
	if (BTC_WIFI_PNP_SLEEP == pnp_state) {

		RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,

			 "[BTCoex], Pnp notify to SLEEP\n");

		/* BT should clear UnderIPS/UnderLPS state to avoid mismatch

		 * state after wakeup.

		 */

		coex_sta->under_ips = false;

		coex_sta->under_lps = false;

		btcoexist->stop_coex_dm = true;

		btc8821a1ant_ignore_wlan_act(btcoexist, FORCE_EXEC, true);

		btc8821a1ant_power_save_state(btcoexist, BTC_PS_WIFI_NATIVE,

					      0x0, 0x0);

		btc8821a1ant_ps_tdma(btcoexist, NORMAL_EXEC, false, 9);

		btc8821a1ant_ps_tdma(btcoexist, NORMAL_EXEC, false, 0);

		btc8821a1ant_coex_table_with_type(btcoexist, NORMAL_EXEC, 2);

		btc8821a1ant_set_ant_path(btcoexist, BTC_ANT_PATH_BT, false,

					  true);

	} else if (BTC_WIFI_PNP_WAKE_UP == pnp_state) {

		RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,

			 "[BTCoex], Pnp notify to WAKE UP\n");