From: Marcel Holtmann <marcel@holtmann.org>
Date: Fri, 14 Jul 2006 14:01:52 +0000 (+0200)
Subject: [Bluetooth] Correct SCO buffer size for another Broadcom chip
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=520ca78acc652c89c92e8bf29536319afa9d88bb;p=linux-beck.git

[Bluetooth] Correct SCO buffer size for another Broadcom chip

The SCO buffer size values on IBM/Lenovo ThinkPad laptops with a
Bluetooth chip from Broadcom are wrong. The USB Bluetooth driver
has to set a quirk to correct the SCO buffer size values.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---

diff --git a/drivers/bluetooth/hci_usb.c b/drivers/bluetooth/hci_usb.c
index 6a0c2230f82f..f4784f49f00a 100644
--- a/drivers/bluetooth/hci_usb.c
+++ b/drivers/bluetooth/hci_usb.c
@@ -67,6 +67,8 @@ static int ignore = 0;
 static int ignore_dga = 0;
 static int ignore_csr = 0;
 static int ignore_sniffer = 0;
+static int disable_scofix = 0;
+static int force_scofix = 0;
 static int reset = 0;
 
 #ifdef CONFIG_BT_HCIUSB_SCO
@@ -110,6 +112,9 @@ static struct usb_device_id blacklist_ids[] = {
 	{ USB_DEVICE(0x0a5c, 0x200a), .driver_info = HCI_RESET | HCI_BROKEN_ISOC },
 	{ USB_DEVICE(0x0a5c, 0x2009), .driver_info = HCI_BCM92035 },
 
+	/* IBM/Lenovo ThinkPad with Broadcom chip */
+	{ USB_DEVICE(0x0a5c, 0x201e), .driver_info = HCI_WRONG_SCO_MTU },
+
 	/* Microsoft Wireless Transceiver for Bluetooth 2.0 */
 	{ USB_DEVICE(0x045e, 0x009c), .driver_info = HCI_RESET },
 
@@ -990,8 +995,10 @@ static int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id
 	if (reset || id->driver_info & HCI_RESET)
 		set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
 
-	if (id->driver_info & HCI_WRONG_SCO_MTU)
-		set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
+	if (force_scofix || id->driver_info & HCI_WRONG_SCO_MTU) {
+		if (!disable_scofix)
+			set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
+	}
 
 	if (id->driver_info & HCI_SNIFFER) {
 		if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
@@ -1161,6 +1168,12 @@ MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
 module_param(ignore_sniffer, bool, 0644);
 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
 
+module_param(disable_scofix, bool, 0644);
+MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
+
+module_param(force_scofix, bool, 0644);
+MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
+
 module_param(reset, bool, 0644);
 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");