Bluetooth: btmtksdio: add MT7921s Bluetooth support

add MT7921s Bluetooth support
Co-developed-by: NMark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: NMark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btmtk.h

@@ -7,6 +7,8 @@
 
 #define HCI_WMT_MAX_EVENT_SIZE		64
 
+#define BTMTK_WMT_REG_READ 0x2
+
 enum {
 	BTMTK_WMT_PATCH_DWNLD = 0x1,
 	BTMTK_WMT_TEST = 0x2,
@@ -14,6 +16,7 @@ enum {
 	BTMTK_WMT_HIF = 0x4,
 	BTMTK_WMT_FUNC_CTRL = 0x6,
 	BTMTK_WMT_RST = 0x7,
+	BTMTK_WMT_REGISTER = 0x8,
 	BTMTK_WMT_SEMAPHORE = 0x17,
 };
 
@@ -49,6 +52,14 @@ struct btmtk_hci_wmt_evt_funcc {
 	__be16 status;
 } __packed;
 
+struct btmtk_hci_wmt_evt_reg {
+	struct btmtk_hci_wmt_evt hwhdr;
+	u8 rsv[2];
+	u8 num;
+	__le32 addr;
+	__le32 val;
+} __packed;
+
 struct btmtk_tci_sleep {
 	u8 mode;
 	__le16 duration;

drivers/bluetooth/btmtksdio.c

@@ -37,14 +37,22 @@ static bool enable_autosuspend;
 
 struct btmtksdio_data {
 	const char *fwname;
+	u16 chipid;
 };
 
 static const struct btmtksdio_data mt7663_data = {
 	.fwname = FIRMWARE_MT7663,
+	.chipid = 0x7663,
 };
 
 static const struct btmtksdio_data mt7668_data = {
 	.fwname = FIRMWARE_MT7668,
+	.chipid = 0x7668,
+};
+
+static const struct btmtksdio_data mt7921_data = {
+	.fwname = FIRMWARE_MT7961,
+	.chipid = 0x7921,
 };
 
 static const struct sdio_device_id btmtksdio_table[] = {
@@ -52,6 +60,8 @@ static const struct sdio_device_id btmtksdio_table[] = {
 	 .driver_data = (kernel_ulong_t)&mt7663_data },
 	{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7668),
 	 .driver_data = (kernel_ulong_t)&mt7668_data },
+	{SDIO_DEVICE(SDIO_VENDOR_ID_MEDIATEK, SDIO_DEVICE_ID_MEDIATEK_MT7961),
+	 .driver_data = (kernel_ulong_t)&mt7921_data },
 	{ }	/* Terminating entry */
 };
 MODULE_DEVICE_TABLE(sdio, btmtksdio_table);
@@ -115,6 +125,7 @@ static int mtk_hci_wmt_sync(struct hci_dev *hdev,
 {
 	struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
 	struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
+	struct btmtk_hci_wmt_evt_reg *wmt_evt_reg;
 	u32 hlen, status = BTMTK_WMT_INVALID;
 	struct btmtk_hci_wmt_evt *wmt_evt;
 	struct btmtk_hci_wmt_cmd *wc;
@@ -194,6 +205,19 @@ static int mtk_hci_wmt_sync(struct hci_dev *hdev,
 		else
 			status = BTMTK_WMT_ON_UNDONE;
 		break;
+	case BTMTK_WMT_PATCH_DWNLD:
+		if (wmt_evt->whdr.flag == 2)
+			status = BTMTK_WMT_PATCH_DONE;
+		else if (wmt_evt->whdr.flag == 1)
+			status = BTMTK_WMT_PATCH_PROGRESS;
+		else
+			status = BTMTK_WMT_PATCH_UNDONE;
+		break;
+	case BTMTK_WMT_REGISTER:
+		wmt_evt_reg = (struct btmtk_hci_wmt_evt_reg *)wmt_evt;
+		if (le16_to_cpu(wmt_evt->whdr.dlen) == 12)
+			status = le32_to_cpu(wmt_evt_reg->val);
+		break;
 	}
 
 	if (wmt_params->status)
@@ -634,20 +658,14 @@ static int btmtksdio_func_query(struct hci_dev *hdev)
 	return status;
 }
 
-static int btmtksdio_setup(struct hci_dev *hdev)
+static int mt76xx_setup(struct hci_dev *hdev, const char *fwname)
 {
-	struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
 	struct btmtk_hci_wmt_params wmt_params;
-	ktime_t calltime, delta, rettime;
 	struct btmtk_tci_sleep tci_sleep;
-	unsigned long long duration;
 	struct sk_buff *skb;
 	int err, status;
 	u8 param = 0x1;
 
-	calltime = ktime_get();
-	bdev->hw_tx_ready = true;
-
 	/* Query whether the firmware is already download */
 	wmt_params.op = BTMTK_WMT_SEMAPHORE;
 	wmt_params.flag = 1;
@@ -667,7 +685,7 @@ static int btmtksdio_setup(struct hci_dev *hdev)
 	}
 
 	/* Setup a firmware which the device definitely requires */
-	err = btmtk_setup_firmware(hdev, bdev->data->fwname, mtk_hci_wmt_sync);
+	err = btmtk_setup_firmware(hdev, fwname, mtk_hci_wmt_sync);
 	if (err < 0)
 		return err;
 
@@ -719,6 +737,113 @@ static int btmtksdio_setup(struct hci_dev *hdev)
 	}
 	kfree_skb(skb);
 
+	return 0;
+}
+
+static int mt79xx_setup(struct hci_dev *hdev, const char *fwname)
+{
+	struct btmtk_hci_wmt_params wmt_params;
+	u8 param = 0x1;
+	int err;
+
+	err = btmtk_setup_firmware_79xx(hdev, fwname, mtk_hci_wmt_sync);
+	if (err < 0) {
+		bt_dev_err(hdev, "Failed to setup 79xx firmware (%d)", err);
+		return err;
+	}
+
+	/* Enable Bluetooth protocol */
+	wmt_params.op = BTMTK_WMT_FUNC_CTRL;
+	wmt_params.flag = 0;
+	wmt_params.dlen = sizeof(param);
+	wmt_params.data = &param;
+	wmt_params.status = NULL;
+
+	err = mtk_hci_wmt_sync(hdev, &wmt_params);
+	if (err < 0) {
+		bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
+		return err;
+	}
+
+	return err;
+}
+
+static int btsdio_mtk_reg_read(struct hci_dev *hdev, u32 reg, u32 *val)
+{
+	struct btmtk_hci_wmt_params wmt_params;
+	struct reg_read_cmd {
+		u8 type;
+		u8 rsv;
+		u8 num;
+		__le32 addr;
+	} __packed reg_read = {
+		.type = 1,
+		.num = 1,
+	};
+	u32 status;
+	int err;
+
+	reg_read.addr = cpu_to_le32(reg);
+	wmt_params.op = BTMTK_WMT_REGISTER;
+	wmt_params.flag = BTMTK_WMT_REG_READ;
+	wmt_params.dlen = sizeof(reg_read);
+	wmt_params.data = &reg_read;
+	wmt_params.status = &status;
+
+	err = mtk_hci_wmt_sync(hdev, &wmt_params);
+	if (err < 0) {
+		bt_dev_err(hdev, "Failed to read reg(%d)", err);
+		return err;
+	}
+
+	*val = status;
+
+	return err;
+}
+
+static int btmtksdio_setup(struct hci_dev *hdev)
+{
+	struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
+	ktime_t calltime, delta, rettime;
+	unsigned long long duration;
+	char fwname[64];
+	int err, dev_id;
+	u32 fw_version = 0;
+
+	calltime = ktime_get();
+	bdev->hw_tx_ready = true;
+
+	switch (bdev->data->chipid) {
+	case 0x7921:
+		err = btsdio_mtk_reg_read(hdev, 0x70010200, &dev_id);
+		if (err < 0) {
+			bt_dev_err(hdev, "Failed to get device id (%d)", err);
+			return err;
+		}
+
+		err = btsdio_mtk_reg_read(hdev, 0x80021004, &fw_version);
+		if (err < 0) {
+			bt_dev_err(hdev, "Failed to get fw version (%d)", err);
+			return err;
+		}
+
+		snprintf(fwname, sizeof(fwname),
+			 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
+			 dev_id & 0xffff, (fw_version & 0xff) + 1);
+		err = mt79xx_setup(hdev, fwname);
+		if (err < 0)
+			return err;
+		break;
+	case 0x7663:
+	case 0x7668:
+		err = mt76xx_setup(hdev, bdev->data->fwname);
+		if (err < 0)
+			return err;
+		break;
+	default:
+		return -ENODEV;
+	}
+
 	rettime = ktime_get();
 	delta = ktime_sub(rettime, calltime);
 	duration = (unsigned long long)ktime_to_ns(delta) >> 10;