rtw88: add BT co-existence support

Both RTL8822BE/RTL8822CE are WiFi + BT combo chips. Since
WiFi and BT use 2.4GHz to transmit, it is important to
make sure they run concurrently without interfering each
other. To achieve this, WiFi driver requires a mechanism
to collaborate with BT, whether they share the antenna(s)
or not.

The final decision made by the co-existence mechanism is
to choose a proper strategy, or called "tdma/table", and
inform either firmware or hardware of the strategy.
To choose a strategy, co-existence mechanism needs to
have enough information from WiFi and BT.

BT information is provided through firmware C2H.
The contents describe the current status of BT, such as
if BT is connected or is idle, or the profile that is
being used.

WiFi information can be provided by WiFi itself. The WiFi
driver will call various of "notify" functions each time
the state of WiFi changed, such as WiFi is going to switch
channel or is connected. Also WiFi driver can know if it
shares antenna with BT by reading efuse content. Antenna
configuration of the module will finally get a different
strategy.

Upon receiving any information from WiFi or BT, the WiFi
driver will run the co-existence mechanism immediately.
It will set the RF antenna configuration according to the
strategy through the TDMA H2C to firmware and a hardware
table. Based on the tdma/table, WiFi + BT should work with
each other, and having a better user experience.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw88/fw.h b/drivers/net/wireless/realtek/rtw88/fw.h
index 67f6cf770ced..e95d85bd097f 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.h
+++ b/drivers/net/wireless/realtek/rtw88/fw.h
@@ -35,7 +35,9 @@
 
 enum rtw_c2h_cmd_id {
 	C2H_BT_INFO = 0x09,
+	C2H_BT_MP_INFO = 0x0b,
 	C2H_HW_FEATURE_REPORT = 0x19,
+	C2H_WLAN_INFO = 0x27,
 	C2H_HW_FEATURE_DUMP = 0xfd,
 	C2H_HALMAC = 0xff,
 };
@@ -71,6 +73,14 @@ enum rtw_fw_rf_type {
 	FW_RF_MAX_TYPE = 0xF,
 };
 
+struct rtw_coex_info_req {
+	u8 seq;
+	u8 op_code;
+	u8 para1;
+	u8 para2;
+	u8 para3;
+};
+
 struct rtw_iqk_para {
 	u8 clear;
 	u8 segment_iqk;
@@ -139,6 +149,14 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
 #define H2C_CMD_RA_INFO			0x40
 #define H2C_CMD_RSSI_MONITOR		0x42
 
+#define H2C_CMD_COEX_TDMA_TYPE		0x60
+#define H2C_CMD_QUERY_BT_INFO		0x61
+#define H2C_CMD_FORCE_BT_TX_POWER	0x62
+#define H2C_CMD_IGNORE_WLAN_ACTION	0x63
+#define H2C_CMD_WL_CH_INFO		0x66
+#define H2C_CMD_QUERY_BT_MP_INFO	0x67
+#define H2C_CMD_BT_WIFI_CONTROL		0x69
+
 #define SET_H2C_CMD_ID_CLASS(h2c_pkt, value)				       \
 	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(7, 0))
 
@@ -191,6 +209,50 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
 	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(23, 16))
 #define SET_RA_INFO_RA_MASK3(h2c_pkt, value)                                   \
 	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_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)                                    \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(23, 16))
+#define SET_WL_CH_INFO_BW(h2c_pkt, value)                                      \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(31, 24))
+#define SET_BT_MP_INFO_SEQ(h2c_pkt, value)                                     \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 12))
+#define SET_BT_MP_INFO_OP_CODE(h2c_pkt, value)                                 \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(23, 16))
+#define SET_BT_MP_INFO_PARA1(h2c_pkt, value)                                   \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(31, 24))
+#define SET_BT_MP_INFO_PARA2(h2c_pkt, value)                                   \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(7, 0))
+#define SET_BT_MP_INFO_PARA3(h2c_pkt, value)                                   \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(15, 8))
+#define SET_BT_TX_POWER_INDEX(h2c_pkt, value)                                  \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 8))
+#define SET_IGNORE_WLAN_ACTION_EN(h2c_pkt, value)                              \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, BIT(8))
+#define SET_COEX_TDMA_TYPE_PARA1(h2c_pkt, value)                               \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 8))
+#define SET_COEX_TDMA_TYPE_PARA2(h2c_pkt, value)                               \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(23, 16))
+#define SET_COEX_TDMA_TYPE_PARA3(h2c_pkt, value)                               \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(31, 24))
+#define SET_COEX_TDMA_TYPE_PARA4(h2c_pkt, value)                               \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(7, 0))
+#define SET_COEX_TDMA_TYPE_PARA5(h2c_pkt, value)                               \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(15, 8))
+#define SET_BT_WIFI_CONTROL_OP_CODE(h2c_pkt, value)                            \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 8))
+#define SET_BT_WIFI_CONTROL_DATA1(h2c_pkt, value)                              \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(23, 16))
+#define SET_BT_WIFI_CONTROL_DATA2(h2c_pkt, value)                              \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(31, 24))
+#define SET_BT_WIFI_CONTROL_DATA3(h2c_pkt, value)                              \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(7, 0))
+#define SET_BT_WIFI_CONTROL_DATA4(h2c_pkt, value)                              \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(15, 8))
+#define SET_BT_WIFI_CONTROL_DATA5(h2c_pkt, value)                              \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(23, 16))
 
 static inline struct rtw_c2h_cmd *get_c2h_from_skb(struct sk_buff *skb)
 {
@@ -208,6 +270,15 @@ void rtw_fw_send_phydm_info(struct rtw_dev *rtwdev);
 
 void rtw_fw_do_iqk(struct rtw_dev *rtwdev, struct rtw_iqk_para *para);
 void rtw_fw_set_pwr_mode(struct rtw_dev *rtwdev);
+void rtw_fw_query_bt_info(struct rtw_dev *rtwdev);
+void rtw_fw_wl_ch_info(struct rtw_dev *rtwdev, u8 link, u8 ch, u8 bw);
+void rtw_fw_query_bt_mp_info(struct rtw_dev *rtwdev,
+			     struct rtw_coex_info_req *req);
+void rtw_fw_force_bt_tx_power(struct rtw_dev *rtwdev, u8 bt_pwr_dec_lvl);
+void rtw_fw_bt_ignore_wlan_action(struct rtw_dev *rtwdev, bool enable);
+void rtw_fw_coex_tdma_type(struct rtw_dev *rtwdev,
+			   u8 para1, u8 para2, u8 para3, u8 para4, u8 para5);
+void rtw_fw_bt_wifi_control(struct rtw_dev *rtwdev, u8 op_code, u8 *data);
 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);
 void rtw_fw_media_status_report(struct rtw_dev *rtwdev, u8 mac_id, bool conn);