rtw88: load wowlan firmware if wowlan is supported

Driver used to download normal firmware only,
but some devices support wowlan and require to
download wowlan firmware when system suspends.
So modify rtw_load_firmware() and its callback to
allow driver to download both normal and wowlan firmware.

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

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

@@ -793,6 +793,26 @@ void rtw_update_sta_info(struct rtw_dev *rtwdev, struct rtw_sta_info *si)
 	rtw_fw_send_ra_info(rtwdev, si);
 }
 
+static int rtw_wait_firmware_completion(struct rtw_dev *rtwdev)
+{
+	struct rtw_chip_info *chip = rtwdev->chip;
+	struct rtw_fw_state *fw;
+
+	fw = &rtwdev->fw;
+	wait_for_completion(&fw->completion);
+	if (!fw->firmware)
+		return -EINVAL;
+
+	if (chip->wow_fw_name) {
+		fw = &rtwdev->wow_fw;
+		wait_for_completion(&fw->completion);
+		if (!fw->firmware)
+			return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int rtw_power_on(struct rtw_dev *rtwdev)
 {
 	struct rtw_chip_info *chip = rtwdev->chip;
@@ -813,11 +833,10 @@ static int rtw_power_on(struct rtw_dev *rtwdev)
 		goto err;
 	}
 
-	wait_for_completion(&fw->completion);
+	ret = rtw_wait_firmware_completion(rtwdev);
-	if (!fw->firmware) {
+	if (ret) {
-		ret = -EINVAL;
+		rtw_err(rtwdev, "failed to wait firmware completion\n");
-		rtw_err(rtwdev, "failed to load firmware\n");
+		goto err_off;
-		goto err;
 	}
 
 	ret = rtw_download_firmware(rtwdev, fw);
@@ -1020,8 +1039,8 @@ static void rtw_unset_supported_band(struct ieee80211_hw *hw,
 
 static void rtw_load_firmware_cb(const struct firmware *firmware, void *context)
 {
-	struct rtw_dev *rtwdev = context;
+	struct rtw_fw_state *fw = context;
-	struct rtw_fw_state *fw = &rtwdev->fw;
+	struct rtw_dev *rtwdev = fw->rtwdev;
 	const struct rtw_fw_hdr *fw_hdr;
 
 	if (!firmware || !firmware->data) {
@@ -1043,17 +1062,35 @@ static void rtw_load_firmware_cb(const struct firmware *firmware, void *context)
 		 fw->version, fw->sub_version, fw->sub_index, fw->h2c_version);
 }
 
-static int rtw_load_firmware(struct rtw_dev *rtwdev, const char *fw_name)
+static int rtw_load_firmware(struct rtw_dev *rtwdev, enum rtw_fw_type type)
 {
-	struct rtw_fw_state *fw = &rtwdev->fw;
+	const char *fw_name;
+	struct rtw_fw_state *fw;
 	int ret;
 
+	switch (type) {
+	case RTW_WOWLAN_FW:
+		fw = &rtwdev->wow_fw;
+		fw_name = rtwdev->chip->wow_fw_name;
+		break;
+
+	case RTW_NORMAL_FW:
+		fw = &rtwdev->fw;
+		fw_name = rtwdev->chip->fw_name;
+		break;
+
+	default:
+		rtw_warn(rtwdev, "unsupported firmware type\n");
+		return -ENOENT;
+	}
+
+	fw->rtwdev = rtwdev;
 	init_completion(&fw->completion);
 
 	ret = request_firmware_nowait(THIS_MODULE, true, fw_name, rtwdev->dev,
-				      GFP_KERNEL, rtwdev, rtw_load_firmware_cb);
+				      GFP_KERNEL, fw, rtw_load_firmware_cb);
 	if (ret) {
-		rtw_err(rtwdev, "async firmware request failed\n");
+		rtw_err(rtwdev, "failed to async firmware request\n");
 		return ret;
 	}
 
@@ -1372,12 +1409,19 @@ int rtw_core_init(struct rtw_dev *rtwdev)
 			  BIT_HTC_LOC_CTRL | BIT_APP_PHYSTS |
 			  BIT_AB | BIT_AM | BIT_APM;
 
-	ret = rtw_load_firmware(rtwdev, rtwdev->chip->fw_name);
+	ret = rtw_load_firmware(rtwdev, RTW_NORMAL_FW);
 	if (ret) {
 		rtw_warn(rtwdev, "no firmware loaded\n");
 		return ret;
 	}
 
+	if (chip->wow_fw_name) {
+		ret = rtw_load_firmware(rtwdev, RTW_WOWLAN_FW);
+		if (ret) {
+			rtw_warn(rtwdev, "no wow firmware loaded\n");
+			return ret;
+		}
+	}
 	return 0;
 }
 EXPORT_SYMBOL(rtw_core_init);
@@ -1385,12 +1429,16 @@ EXPORT_SYMBOL(rtw_core_init);
 void rtw_core_deinit(struct rtw_dev *rtwdev)
 {
 	struct rtw_fw_state *fw = &rtwdev->fw;
+	struct rtw_fw_state *wow_fw = &rtwdev->wow_fw;
 	struct rtw_rsvd_page *rsvd_pkt, *tmp;
 	unsigned long flags;
 
 	if (fw->firmware)
 		release_firmware(fw->firmware);
 
+	if (wow_fw->firmware)
+		release_firmware(wow_fw->firmware);
+
 	tasklet_kill(&rtwdev->tx_tasklet);
 	spin_lock_irqsave(&rtwdev->tx_report.q_lock, flags);
 	skb_queue_purge(&rtwdev->tx_report.queue);

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

@@ -193,6 +193,11 @@ enum rtw_rx_queue_type {
 	RTK_MAX_RX_QUEUE_NUM
 };
 
+enum rtw_fw_type {
+	RTW_NORMAL_FW = 0x0,
+	RTW_WOWLAN_FW = 0x1,
+};
+
 enum rtw_rate_index {
 	RTW_RATEID_BGN_40M_2SS	= 0,
 	RTW_RATEID_BGN_40M_1SS	= 1,
@@ -1030,6 +1035,8 @@ struct rtw_chip_info {
 	u8 bfer_su_max_num;
 	u8 bfer_mu_max_num;
 
+	const char *wow_fw_name;
+
 	/* coex paras */
 	u32 coex_para_ver;
 	u8 bt_desired_ver;
@@ -1456,6 +1463,7 @@ struct rtw_fifo_conf {
 
 struct rtw_fw_state {
 	const struct firmware *firmware;
+	struct rtw_dev *rtwdev;
 	struct completion completion;
 	u16 version;
 	u8 sub_version;
@@ -1580,6 +1588,8 @@ struct rtw_dev {
 
 	u8 mp_mode;
 
+	struct rtw_fw_state wow_fw;
+
 	/* hci related data, must be last */
 	u8 priv[0] __aligned(sizeof(void *));
 };