From 81a68a1424bae4f2cb802691e1d3975fdf929b40 Mon Sep 17 00:00:00 2001 From: Po-Hao Huang Date: Tue, 13 Jul 2021 18:45:23 +0800 Subject: [PATCH] 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: Po-Hao Huang Signed-off-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210713104524.47101-2-pkshih@realtek.com --- drivers/net/wireless/realtek/rtw88/main.c | 2 ++ drivers/net/wireless/realtek/rtw88/main.h | 6 ++++++ drivers/net/wireless/realtek/rtw88/rtw8822c.c | 1 + 3 files changed, 9 insertions(+) diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c index c636483..6bb55e66 100644 --- a/drivers/net/wireless/realtek/rtw88/main.c +++ b/drivers/net/wireless/realtek/rtw88/main.c @@ -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 | diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h index e5af375..5681212 100644 --- a/drivers/net/wireless/realtek/rtw88/main.h +++ b/drivers/net/wireless/realtek/rtw88/main.h @@ -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); diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.c b/drivers/net/wireless/realtek/rtw88/rtw8822c.c index 8bf3cd3..f3ad07996 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8822c.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.c @@ -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", -- 2.7.4