Bluetooth: btusb: Configure Intel debug feature based on available support

This patch shall enable the Intel telemetry exception format
based on the supported features

Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Ps AyappadasX <AyappadasX.Ps@intel.com>
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btintel.c

@@ -786,6 +786,33 @@ int btintel_read_debug_features(struct hci_dev *hdev,
 }
 EXPORT_SYMBOL_GPL(btintel_read_debug_features);
 
+int btintel_set_debug_features(struct hci_dev *hdev,
+			       const struct intel_debug_features *features)
+{
+	u8 mask[11] = { 0x0a, 0x92, 0x02, 0x07, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00 };
+	struct sk_buff *skb;
+
+	if (!features)
+		return -EINVAL;
+
+	if (!(features->page1[0] & 0x3f)) {
+		bt_dev_info(hdev, "Telemetry exception format not supported");
+		return 0;
+	}
+
+	skb = __hci_cmd_sync(hdev, 0xfc8b, 11, mask, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		bt_dev_err(hdev, "Setting Intel telemetry ddc write event mask failed (%ld)",
+			   PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+
+	kfree_skb(skb);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_debug_features);
+
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
 MODULE_VERSION(VERSION);

drivers/bluetooth/btintel.h

@@ -92,10 +92,10 @@ int btintel_read_boot_params(struct hci_dev *hdev,
 int btintel_download_firmware(struct hci_dev *dev, const struct firmware *fw,
 			      u32 *boot_param);
 void btintel_reset_to_bootloader(struct hci_dev *hdev);
-
 int btintel_read_debug_features(struct hci_dev *hdev,
 				struct intel_debug_features *features);
-
+int btintel_set_debug_features(struct hci_dev *hdev,
+			       const struct intel_debug_features *features);
 #else
 
 static inline int btintel_check_bdaddr(struct hci_dev *hdev)
@@ -201,4 +201,10 @@ static inline int btintel_read_debug_features(struct hci_dev *hdev,
 	return -EOPNOTSUPP;
 }
 
+static inline int btintel_set_debug_features(struct hci_dev *hdev,
+					     const struct intel_debug_features *features)
+{
+	return -EOPNOTSUPP;
+}
+
 #endif

drivers/bluetooth/btusb.c

@@ -2548,6 +2548,9 @@ done:
 	 */
 	btintel_read_debug_features(hdev, &features);
 
+	/* Set DDC mask for available debug features */
+	btintel_set_debug_features(hdev, &features);
+
 	/* Read the Intel version information after loading the FW  */
 	err = btintel_read_version(hdev, &ver);
 	if (err)