Commit 4517f811 authored by Ching-Te Ku's avatar Ching-Te Ku Committed by Kalle Valo
Browse files

rtw88: coex: fix A2DP stutters while WL busy + WL scan 



While WL scan, WL is more high priority than BT. The packets from AP
will be a big interference to A2DP. It will lead to A2DP stutters. Stop
answering CTS to AP to decrease AP's packets Tx while WL scan + WL busy.
Enable BT AFH feature to make BT leave away from WL channel.

Desired BT firmware BT-COEX version: 0x1c
Desired WL firmware version: 9.9.x

Signed-off-by: default avatarChing-Te Ku <ku920601@realtek.com>
Signed-off-by: default avatarPing-Ke Shih <pkshih@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210319054218.3319-8-pkshih@realtek.com
parent 7ae7784e

drivers/net/wireless/realtek/rtw88/coex.c

+5 −3
Original line number Diff line number Diff line
@@ -787,7 +787,6 @@ static void rtw_coex_update_wl_ch_info(struct rtw_dev *rtwdev, u8 type) 
{

	struct rtw_chip_info *chip = rtwdev->chip;

	struct rtw_coex_dm *coex_dm = &rtwdev->coex.dm;

	struct rtw_efuse *efuse = &rtwdev->efuse;

	u8 link = 0;

	u8 center_chan = 0;

	u8 bw;
@@ -798,7 +797,7 @@ static void rtw_coex_update_wl_ch_info(struct rtw_dev *rtwdev, u8 type) 
	if (type != COEX_MEDIA_DISCONNECT)

		center_chan = rtwdev->hal.current_channel;



	if (center_chan == 0 || (efuse->share_ant && center_chan <= 14)) {

	if (center_chan == 0) {

		link = 0;

		center_chan = 0;

		bw = 0;
@@ -2325,8 +2324,11 @@ static void rtw_coex_action_wl_linkscan(struct rtw_dev *rtwdev) 
	if (efuse->share_ant) { /* Shared-Ant */

		if (coex_stat->bt_a2dp_exist) {

			slot_type = TDMA_4SLOT;

			table_case = 9;

			tdma_case = 11;

			if (coex_stat->wl_gl_busy)

				table_case = 26;

			else

				table_case = 9;

		} else {

			table_case = 9;

			tdma_case = 7;

drivers/net/wireless/realtek/rtw88/rtw8822c.c

+1 −1
Original line number Diff line number Diff line
@@ -4393,7 +4393,7 @@ struct rtw_chip_info rtw8822c_hw_spec = { 
	.wowlan_stub = &rtw_wowlan_stub_8822c,

	.max_sched_scan_ssids = 4,

#endif

	.coex_para_ver = 0x201029,

	.coex_para_ver = 0x2103181c,

	.bt_desired_ver = 0x1c,

	.scbd_support = true,

	.new_scbd10_def = true,