[PATCH v2 03/11] wifi: rtw88: fw: add the GNT_BT firmware command
From: luka . gejak
Date: Sat Jul 25 2026 - 11:06:05 EST
From: Luka Gejak <luka.gejak@xxxxxxxxx>
The RTL8723BS coexistence sequence needs an H2C command that rtw88 does
not implement: the firmware GNT_BT state, which hands the shared antenna
to WiFi. Add it here so the coexistence change that follows has it
available.
Signed-off-by: Luka Gejak <luka.gejak@xxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/fw.c | 11 +++++++++++
drivers/net/wireless/realtek/rtw88/fw.h | 4 ++++
2 files changed, 15 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c
index 945fedcd375b..dd6595b8175e 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.c
+++ b/drivers/net/wireless/realtek/rtw88/fw.c
@@ -786,6 +786,17 @@ void rtw_fw_media_status_report(struct rtw_dev *rtwdev, u8 mac_id, bool connect)
rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
}
+/* 8723BS SDIO: set the firmware GNT_BT state (0 = WiFi owns the antenna). */
+void rtw_fw_set_gnt_bt(struct rtw_dev *rtwdev, u8 state)
+{
+ u8 h2c_pkt[H2C_PKT_SIZE] = {0};
+
+ SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_GNT_BT);
+ SET_GNT_BT_STATE(h2c_pkt, state);
+
+ rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
+}
+
void rtw_fw_update_wl_phy_info(struct rtw_dev *rtwdev)
{
struct rtw_traffic_stats *stats = &rtwdev->stats;
diff --git a/drivers/net/wireless/realtek/rtw88/fw.h b/drivers/net/wireless/realtek/rtw88/fw.h
index 48ad9ceab6ea..f5ed65c46350 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.h
+++ b/drivers/net/wireless/realtek/rtw88/fw.h
@@ -572,6 +572,7 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
#define H2C_CMD_QUERY_BT_MP_INFO 0x67
#define H2C_CMD_BT_WIFI_CONTROL 0x69
#define H2C_CMD_WIFI_CALIBRATION 0x6d
+#define H2C_CMD_GNT_BT 0x6e
#define H2C_CMD_QUERY_BT_HID_INFO 0x73
#define H2C_CMD_KEEP_ALIVE 0x03
@@ -684,6 +685,8 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(31, 24))
#define SET_QUERY_BT_INFO(h2c_pkt, value) \
le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, BIT(8))
+#define SET_GNT_BT_STATE(h2c_pkt, value) \
+ le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, BIT(8))
#define SET_WL_CH_INFO_LINK(h2c_pkt, value) \
le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 8))
#define SET_WL_CH_INFO_CHNL(h2c_pkt, value) \
@@ -849,6 +852,7 @@ void rtw_fw_send_rssi_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si);
void rtw_fw_send_ra_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si,
bool reset_ra_mask);
void rtw_fw_media_status_report(struct rtw_dev *rtwdev, u8 mac_id, bool conn);
+void rtw_fw_set_gnt_bt(struct rtw_dev *rtwdev, u8 state);
void rtw_fw_update_wl_phy_info(struct rtw_dev *rtwdev);
void rtw_fw_beacon_filter_config(struct rtw_dev *rtwdev, bool connect,
struct ieee80211_vif *vif);
--
2.55.0