Bluetooth: btintel: Create common function for Intel Reset

The Intel_Reset command is used to reset the device after downloading
the firmware and this is Intel generic command used in both USB and
UART.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btintel.c

@@ -569,6 +569,26 @@ struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
 }
 EXPORT_SYMBOL_GPL(btintel_regmap_init);
 
+int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param)
+{
+	struct intel_reset params = { 0x00, 0x01, 0x00, 0x01, 0x00000000 };
+	struct sk_buff *skb;
+
+	params.boot_param = cpu_to_le32(boot_param);
+
+	skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(params), &params,
+			     HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		bt_dev_err(hdev, "Failed to send Intel Reset command");
+		return PTR_ERR(skb);
+	}
+
+	kfree_skb(skb);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_send_intel_reset);
+
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
 MODULE_VERSION(VERSION);

drivers/bluetooth/btintel.h

@@ -69,6 +69,14 @@ struct intel_secure_send_result {
 	__u8     status;
 } __packed;
 
+struct intel_reset {
+	__u8     reset_type;
+	__u8     patch_enable;
+	__u8     ddc_reload;
+	__u8     boot_option;
+	__le32   boot_param;
+} __packed;
+
 #if IS_ENABLED(CONFIG_BT_INTEL)
 
 int btintel_check_bdaddr(struct hci_dev *hdev);
@@ -89,6 +97,7 @@ int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver);
 
 struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
 				   u16 opcode_write);
+int btintel_send_intel_reset(struct hci_dev *hdev, u32 boot_param);
 
 #else
 
@@ -165,4 +174,10 @@ static inline struct regmap *btintel_regmap_init(struct hci_dev *hdev,
 {
 	return ERR_PTR(-EINVAL);
 }
+
+static inline int btintel_send_intel_reset(struct hci_dev *hdev,
+					   u32 reset_param)
+{
+	return -EOPNOTSUPP;
+}
 #endif

drivers/bluetooth/btusb.c

@@ -2009,8 +2009,6 @@ static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
 
 static int btusb_setup_intel_new(struct hci_dev *hdev)
 {
-	static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
-					  0x00, 0x08, 0x04, 0x00 };
 	struct btusb_data *data = hci_get_drvdata(hdev);
 	struct sk_buff *skb;
 	struct intel_version ver;
@@ -2018,6 +2016,7 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 	const struct firmware *fw;
 	const u8 *fw_ptr;
 	u32 frag_len;
+	u32 boot_param;
 	char fwname[64];
 	ktime_t calltime, delta, rettime;
 	unsigned long long duration;
@@ -2025,6 +2024,9 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 
 	BT_DBG("%s", hdev->name);
 
+	/* The default boot parameter */
+	boot_param = 0x00040800;
+
 	calltime = ktime_get();
 
 	/* Read the Intel version information to determine if the device
@@ -2341,12 +2343,9 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 
 	set_bit(BTUSB_BOOTING, &data->flags);
 
-	skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
-			     HCI_INIT_TIMEOUT);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	kfree_skb(skb);
+	err = btintel_send_intel_reset(hdev, boot_param);
+	if (err)
+		return err;
 
 	/* The bootloader will not indicate when the device is ready. This
 	 * is done by the operational firmware sending bootup notification.

drivers/bluetooth/hci_intel.c

@@ -540,8 +540,6 @@ static int intel_set_baudrate(struct hci_uart *hu, unsigned int speed)
 
 static int intel_setup(struct hci_uart *hu)
 {
-	static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
-					  0x00, 0x08, 0x04, 0x00 };
 	struct intel_data *intel = hu->priv;
 	struct hci_dev *hdev = hu->hdev;
 	struct sk_buff *skb;
@@ -552,6 +550,7 @@ static int intel_setup(struct hci_uart *hu)
 	const u8 *fw_ptr;
 	char fwname[64];
 	u32 frag_len;
+	u32 boot_param;
 	ktime_t calltime, delta, rettime;
 	unsigned long long duration;
 	unsigned int init_speed, oper_speed;
@@ -563,6 +562,9 @@ static int intel_setup(struct hci_uart *hu)
 	hu->hdev->set_diag = btintel_set_diag;
 	hu->hdev->set_bdaddr = btintel_set_bdaddr;
 
+	/* Default boot parameter */
+	boot_param = 0x00040800;
+
 	calltime = ktime_get();
 
 	if (hu->init_speed)
@@ -911,12 +913,9 @@ static int intel_setup(struct hci_uart *hu)
 
 	set_bit(STATE_BOOTING, &intel->flags);
 
-	skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
-			     HCI_CMD_TIMEOUT);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	kfree_skb(skb);
+	err = btintel_send_intel_reset(hdev, boot_param);
+	if (err)
+		return err;
 
 	/* The bootloader will not indicate when the device is ready. This
 	 * is done by the operational firmware sending bootup notification.