rtw88: coex: Add C2H/H2C handshake with BT mailbox for asking HID Info

In order to recognize the gaming controller HID, make a C2H/H2C/Mailbox
handshake to collect all the connected information from BT.
Signed-off-by: Ching-Te Ku <ku920601@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220215004855.4098-6-pkshih@realtek.com

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

@@ -2375,6 +2375,7 @@ static void rtw_coex_action_wl_native_lps(struct rtw_dev *rtwdev)
 	struct rtw_coex *coex = &rtwdev->coex;
 	struct rtw_efuse *efuse = &rtwdev->efuse;
 	struct rtw_chip_info *chip = rtwdev->chip;
+	struct rtw_coex_stat *coex_stat = &coex->stat;
 	u8 table_case, tdma_case;
 
 	if (coex->under_5g)
@@ -2383,7 +2384,6 @@ static void rtw_coex_action_wl_native_lps(struct rtw_dev *rtwdev)
 	rtw_dbg(rtwdev, RTW_DBG_COEX, "[BTCoex], %s()\n", __func__);
 
 	rtw_coex_set_ant_path(rtwdev, false, COEX_SET_ANT_2G);
-	rtw_coex_set_rf_para(rtwdev, chip->wl_rf_para_rx[0]);
 
 	if (efuse->share_ant) {
 		/* Shared-Ant */
@@ -2395,6 +2395,16 @@ static void rtw_coex_action_wl_native_lps(struct rtw_dev *rtwdev)
 		tdma_case = 100;
 	}
 
+	if (coex_stat->bt_game_hid_exist) {
+		coex_stat->wl_coex_mode = COEX_WLINK_2GFREE;
+		if (coex_stat->wl_tput_dir == COEX_WL_TPUT_TX)
+			rtw_coex_set_rf_para(rtwdev, chip->wl_rf_para_tx[6]);
+		else
+			rtw_coex_set_rf_para(rtwdev, chip->wl_rf_para_rx[5]);
+	} else {
+		rtw_coex_set_rf_para(rtwdev, chip->wl_rf_para_rx[0]);
+	}
+
 	rtw_coex_table(rtwdev, false, table_case);
 	rtw_coex_tdma(rtwdev, false, tdma_case);
 }
@@ -3249,20 +3259,138 @@ void rtw_coex_bt_info_notify(struct rtw_dev *rtwdev, u8 *buf, u8 length)
 		coex_stat->bt_a2dp_bitpool = 0;
 
 	coex_stat->bt_a2dp_sink = ((coex_stat->bt_info_hb3 & BIT(7)) == BIT(7));
-	if (chip->wl_mimo_ps_support && !coex_stat->bt_inq_page) {
-		if ((coex_stat->bt_info_lb2 & COEX_INFO_CONNECTION) &&
-		    (coex_stat->hi_pri_tx + coex_stat->hi_pri_rx >
-		     COEX_BT_GAMEHID_CNT) && !coex_stat->bt_slave) {
-			coex_stat->bt_game_hid_exist = true;
-			rtw_dbg(rtwdev, RTW_DBG_COEX,
-				"[BTCoex], BT game controller exisit!!\n");
+
+	rtw_coex_update_bt_link_info(rtwdev);
+	rtw_coex_run_coex(rtwdev, COEX_RSN_BTINFO);
+}
+
+#define COEX_BT_HIDINFO_MTK	0x46
+static const u8 coex_bt_hidinfo_ps[] = {0x57, 0x69, 0x72};
+static const u8 coex_bt_hidinfo_xb[] = {0x58, 0x62, 0x6f};
+
+void rtw_coex_bt_hid_info_notify(struct rtw_dev *rtwdev, u8 *buf, u8 length)
+{
+	struct rtw_coex *coex = &rtwdev->coex;
+	struct rtw_chip_info *chip = rtwdev->chip;
+	struct rtw_coex_stat *coex_stat = &coex->stat;
+	struct rtw_coex_hid *hidinfo;
+	struct rtw_coex_hid_info_a *hida;
+	struct rtw_coex_hid_handle_list *hl, *bhl;
+	u8 sub_id = buf[2], gamehid_cnt = 0, handle, i;
+	bool cur_game_hid_exist, complete;
+
+	if (!chip->wl_mimo_ps_support &&
+	    (sub_id == COEX_BT_HIDINFO_LIST || sub_id == COEX_BT_HIDINFO_A))
+		return;
+
+	rtw_dbg(rtwdev, RTW_DBG_COEX,
+		"[BTCoex], HID info notify, sub_id = 0x%x\n", sub_id);
+
+	switch (sub_id) {
+	case COEX_BT_HIDINFO_LIST:
+		hl = &coex_stat->hid_handle_list;
+		bhl = (struct rtw_coex_hid_handle_list *)buf;
+		if (!memcmp(hl, bhl, sizeof(*hl)))
+			return;
+		coex_stat->hid_handle_list = *bhl;
+		memset(&coex_stat->hid_info, 0, sizeof(coex_stat->hid_info));
+		for (i = 0; i < COEX_BT_HIDINFO_HANDLE_NUM; i++) {
+			hidinfo = &coex_stat->hid_info[i];
+			if (hl->handle[i] != COEX_BT_HIDINFO_NOTCON &&
+			    hl->handle[i] != 0)
+				hidinfo->hid_handle = hl->handle[i];
+		}
+		break;
+	case COEX_BT_HIDINFO_A:
+		hida = (struct rtw_coex_hid_info_a *)buf;
+		handle = hida->handle;
+		for (i = 0; i < COEX_BT_HIDINFO_HANDLE_NUM; i++) {
+			hidinfo = &coex_stat->hid_info[i];
+			if (hidinfo->hid_handle == handle) {
+				hidinfo->hid_vendor = hida->vendor;
+				memcpy(hidinfo->hid_name, hida->name,
+				       sizeof(hidinfo->hid_name));
+				hidinfo->hid_info_completed = true;
+				break;
+			}
+		}
+		break;
+	}
+	for (i = 0; i < COEX_BT_HIDINFO_HANDLE_NUM; i++) {
+		hidinfo = &coex_stat->hid_info[i];
+		complete = hidinfo->hid_info_completed;
+		handle = hidinfo->hid_handle;
+		if (!complete || handle == COEX_BT_HIDINFO_NOTCON ||
+		    handle == 0 || handle >= COEX_BT_BLE_HANDLE_THRS) {
+			hidinfo->is_game_hid = false;
+			continue;
+		}
+
+		if (hidinfo->hid_vendor == COEX_BT_HIDINFO_MTK) {
+			if ((memcmp(hidinfo->hid_name,
+				    coex_bt_hidinfo_ps,
+				    COEX_BT_HIDINFO_NAME)) == 0)
+				hidinfo->is_game_hid = true;
+			else if ((memcmp(hidinfo->hid_name,
+					 coex_bt_hidinfo_xb,
+					 COEX_BT_HIDINFO_NAME)) == 0)
+				hidinfo->is_game_hid = true;
+			else
+				hidinfo->is_game_hid = false;
 		} else {
-			coex_stat->bt_game_hid_exist = false;
+			hidinfo->is_game_hid = false;
 		}
+		if (hidinfo->is_game_hid)
+			gamehid_cnt++;
 	}
 
-	rtw_coex_update_bt_link_info(rtwdev);
-	rtw_coex_run_coex(rtwdev, COEX_RSN_BTINFO);
+	if (gamehid_cnt > 0)
+		cur_game_hid_exist = true;
+	else
+		cur_game_hid_exist = false;
+
+	if (cur_game_hid_exist != coex_stat->bt_game_hid_exist) {
+		coex_stat->bt_game_hid_exist = cur_game_hid_exist;
+		rtw_dbg(rtwdev, RTW_DBG_COEX,
+			"[BTCoex], HID info changed!bt_game_hid_exist = %d!\n",
+			coex_stat->bt_game_hid_exist);
+		rtw_coex_run_coex(rtwdev, COEX_RSN_BTSTATUS);
+	}
+}
+
+void rtw_coex_query_bt_hid_list(struct rtw_dev *rtwdev)
+{
+	struct rtw_coex *coex = &rtwdev->coex;
+	struct rtw_chip_info *chip = rtwdev->chip;
+	struct rtw_coex_stat *coex_stat = &coex->stat;
+	struct rtw_coex_hid *hidinfo;
+	u8 i, handle;
+	bool complete;
+
+	if (!chip->wl_mimo_ps_support || coex_stat->wl_under_ips ||
+	    (coex_stat->wl_under_lps && !coex_stat->wl_force_lps_ctrl))
+		return;
+
+	if (!coex_stat->bt_hid_exist &&
+	    !((coex_stat->bt_info_lb2 & COEX_INFO_CONNECTION) &&
+	      (coex_stat->hi_pri_tx + coex_stat->hi_pri_rx >
+	       COEX_BT_GAMEHID_CNT)))
+		return;
+
+	rtw_fw_coex_query_hid_info(rtwdev, COEX_BT_HIDINFO_LIST, 0);
+
+	for (i = 0; i < COEX_BT_HIDINFO_HANDLE_NUM; i++) {
+		hidinfo = &coex_stat->hid_info[i];
+		complete = hidinfo->hid_info_completed;
+		handle = hidinfo->hid_handle;
+		if (handle == 0 || handle == COEX_BT_HIDINFO_NOTCON ||
+		    handle >= COEX_BT_BLE_HANDLE_THRS || complete)
+			continue;
+
+		rtw_fw_coex_query_hid_info(rtwdev,
+					   COEX_BT_HIDINFO_A,
+					   handle);
+	}
 }
 
 void rtw_coex_wl_fwdbginfo_notify(struct rtw_dev *rtwdev, u8 *buf, u8 length)

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

@@ -403,10 +403,12 @@ void rtw_coex_scan_notify(struct rtw_dev *rtwdev, u8 type);
 void rtw_coex_connect_notify(struct rtw_dev *rtwdev, u8 type);
 void rtw_coex_media_status_notify(struct rtw_dev *rtwdev, u8 type);
 void rtw_coex_bt_info_notify(struct rtw_dev *rtwdev, u8 *buf, u8 length);
+void rtw_coex_bt_hid_info_notify(struct rtw_dev *rtwdev, u8 *buf, u8 length);
 void rtw_coex_wl_fwdbginfo_notify(struct rtw_dev *rtwdev, u8 *buf, u8 length);
 void rtw_coex_switchband_notify(struct rtw_dev *rtwdev, u8 type);
 void rtw_coex_wl_status_change_notify(struct rtw_dev *rtwdev, u32 type);
 void rtw_coex_wl_status_check(struct rtw_dev *rtwdev);
+void rtw_coex_query_bt_hid_list(struct rtw_dev *rtwdev);
 void rtw_coex_display_coex_info(struct rtw_dev *rtwdev, struct seq_file *m);
 
 static inline bool rtw_coex_disabled(struct rtw_dev *rtwdev)

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

@@ -233,6 +233,9 @@ void rtw_fw_c2h_cmd_handle(struct rtw_dev *rtwdev, struct sk_buff *skb)
 	case C2H_BT_INFO:
 		rtw_coex_bt_info_notify(rtwdev, c2h->payload, len);
 		break;
+	case C2H_BT_HID_INFO:
+		rtw_coex_bt_hid_info_notify(rtwdev, c2h->payload, len);
+		break;
 	case C2H_WLAN_INFO:
 		rtw_coex_wl_fwdbginfo_notify(rtwdev, c2h->payload, len);
 		break;
@@ -538,6 +541,18 @@ void rtw_fw_coex_tdma_type(struct rtw_dev *rtwdev,
 	rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
 }
 
+void rtw_fw_coex_query_hid_info(struct rtw_dev *rtwdev, u8 sub_id, u8 data)
+{
+	u8 h2c_pkt[H2C_PKT_SIZE] = {0};
+
+	SET_H2C_CMD_ID_CLASS(h2c_pkt, H2C_CMD_QUERY_BT_HID_INFO);
+
+	SET_COEX_QUERY_HID_INFO_SUBID(h2c_pkt, sub_id);
+	SET_COEX_QUERY_HID_INFO_DATA1(h2c_pkt, data);
+
+	rtw_fw_send_h2c_command(rtwdev, h2c_pkt);
+}
+
 void rtw_fw_bt_wifi_control(struct rtw_dev *rtwdev, u8 op_code, u8 *data)
 {
 	u8 h2c_pkt[H2C_PKT_SIZE] = {0};

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

@@ -47,6 +47,7 @@ enum rtw_c2h_cmd_id {
 	C2H_CCX_TX_RPT = 0x03,
 	C2H_BT_INFO = 0x09,
 	C2H_BT_MP_INFO = 0x0b,
+	C2H_BT_HID_INFO = 0x45,
 	C2H_RA_RPT = 0x0c,
 	C2H_HW_FEATURE_REPORT = 0x19,
 	C2H_WLAN_INFO = 0x27,
@@ -529,6 +530,7 @@ 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_QUERY_BT_HID_INFO	0x73
 
 #define H2C_CMD_KEEP_ALIVE		0x03
 #define H2C_CMD_DISCONNECT_DECISION	0x04
@@ -681,6 +683,11 @@ static inline void rtw_h2c_pkt_set_header(u8 *h2c_pkt, u8 sub_id)
 #define SET_BT_WIFI_CONTROL_DATA5(h2c_pkt, value)                              \
 	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x01, value, GENMASK(23, 16))
 
+#define SET_COEX_QUERY_HID_INFO_SUBID(h2c_pkt, value)                          \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(15, 8))
+#define SET_COEX_QUERY_HID_INFO_DATA1(h2c_pkt, value)                          \
+	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, GENMASK(23, 16))
+
 #define SET_KEEP_ALIVE_ENABLE(h2c_pkt, value)				       \
 	le32p_replace_bits((__le32 *)(h2c_pkt) + 0x00, value, BIT(8))
 #define SET_KEEP_ALIVE_ADOPT(h2c_pkt, value)				       \
@@ -780,6 +787,8 @@ 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_coex_query_hid_info(struct rtw_dev *rtwdev, u8 sub_id, u8 data);
+
 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);

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

@@ -208,6 +208,7 @@ static void rtw_watch_dog_work(struct work_struct *work)
 		clear_bit(RTW_FLAG_BUSY_TRAFFIC, rtwdev->flags);
 
 	rtw_coex_wl_status_check(rtwdev);
+	rtw_coex_query_bt_hid_list(rtwdev);
 
 	if (busy_traffic != test_bit(RTW_FLAG_BUSY_TRAFFIC, rtwdev->flags))
 		rtw_coex_wl_status_change_notify(rtwdev, 0);

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

@@ -1355,6 +1355,42 @@ struct rtw_coex_dm {
 #define COEX_BTINFO_LENGTH_MAX	10
 #define COEX_BTINFO_LENGTH	7
 
+#define COEX_BT_HIDINFO_LIST	0x0
+#define COEX_BT_HIDINFO_A	0x1
+#define COEX_BT_HIDINFO_NAME	3
+
+#define COEX_BT_HIDINFO_LENGTH	6
+#define COEX_BT_HIDINFO_HANDLE_NUM	4
+#define COEX_BT_HIDINFO_C2H_HANDLE	0
+#define COEX_BT_HIDINFO_C2H_VENDOR	1
+#define COEX_BT_BLE_HANDLE_THRS	0x10
+#define COEX_BT_HIDINFO_NOTCON	0xff
+
+struct rtw_coex_hid {
+	u8 hid_handle;
+	u8 hid_vendor;
+	u8 hid_name[COEX_BT_HIDINFO_NAME];
+	bool hid_info_completed;
+	bool is_game_hid;
+};
+
+struct rtw_coex_hid_handle_list {
+	u8 cmd_id;
+	u8 len;
+	u8 subid;
+	u8 handle_cnt;
+	u8 handle[COEX_BT_HIDINFO_HANDLE_NUM];
+} __packed;
+
+struct rtw_coex_hid_info_a {
+	u8 cmd_id;
+	u8 len;
+	u8 subid;
+	u8 handle;
+	u8 vendor;
+	u8 name[COEX_BT_HIDINFO_NAME];
+} __packed;
+
 struct rtw_coex_stat {
 	bool bt_disabled;
 	bool bt_disabled_pre;
@@ -1386,6 +1422,7 @@ struct rtw_coex_stat {
 	bool bt_418_hid_exist;
 	bool bt_ble_hid_exist;
 	bool bt_game_hid_exist;
+	bool bt_hid_handle_cnt;
 	bool bt_mailbox_reply;
 
 	bool wl_under_lps;
@@ -1464,6 +1501,9 @@ struct rtw_coex_stat {
 
 	u32 darfrc;
 	u32 darfrch;
+
+	struct rtw_coex_hid hid_info[COEX_BT_HIDINFO_HANDLE_NUM];
+	struct rtw_coex_hid_handle_list hid_handle_list;
 };
 
 struct rtw_coex {