Commit 81a68a14 authored by Po-Hao Huang's avatar Po-Hao Huang Committed by Kalle Valo
Browse files

rtw88: 8822c: add tx stbc support under HT mode 



Enabling this improves tx performance for long distance transmission.
We used to enable stbc by the rx stbc cap of the associated station.
But rx cap will be masked out in ieee80211_ht_cap_ie_to_sta_ht_cap
if we do not declare tx stbc.

Signed-off-by: default avatarPo-Hao Huang <phhuang@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/20210713104524.47101-2-pkshih@realtek.com
parent 584dce17

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

+2 −0
Original line number Diff line number Diff line
@@ -1338,6 +1338,8 @@ static void rtw_init_ht_cap(struct rtw_dev *rtwdev, 


	if (rtw_chip_has_rx_ldpc(rtwdev))

		ht_cap->cap |= IEEE80211_HT_CAP_LDPC_CODING;

	if (rtw_chip_has_tx_stbc(rtwdev))

		ht_cap->cap |= IEEE80211_HT_CAP_TX_STBC;



	if (efuse->hw_cap.bw & BIT(RTW_CHANNEL_WIDTH_40))

		ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |

drivers/net/wireless/realtek/rtw88/main.h

+6 −0
Original line number Diff line number Diff line
@@ -1146,6 +1146,7 @@ struct rtw_chip_info { 
	u8 txgi_factor;

	bool is_pwr_by_rate_dec;

	bool rx_ldpc;

	bool tx_stbc;

	u8 max_power_index;



	u16 fw_fifo_addr[RTW_FW_FIFO_MAX];
@@ -1959,6 +1960,11 @@ static inline bool rtw_chip_has_rx_ldpc(struct rtw_dev *rtwdev) 
	return rtwdev->chip->rx_ldpc;

}



static inline bool rtw_chip_has_tx_stbc(struct rtw_dev *rtwdev)

{

	return rtwdev->chip->tx_stbc;

}



static inline void rtw_release_macid(struct rtw_dev *rtwdev, u8 mac_id)

{

	clear_bit(mac_id, rtwdev->mac_id_map);

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

+1 −0
Original line number Diff line number Diff line
@@ -5288,6 +5288,7 @@ struct rtw_chip_info rtw8822c_hw_spec = { 
	.bfer_su_max_num = 2,

	.bfer_mu_max_num = 1,

	.rx_ldpc = true,

	.tx_stbc = true,



#ifdef CONFIG_PM

	.wow_fw_name = "rtw88/rtw8822c_wow_fw.bin",