Re: [Bluez-devel] [PATCH] Add HID->HCI switching support for newer Dell BT cards

[<Mario_Limonciello@Dell.com>]

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Hi,

As it turns out, this also works for the Dell 410 series cards.
Attached is an updated patch to include them.

Regards,

On Fri, 2008-04-04 at 13:54 -0500, Mario Limonciello wrote:

> Hello,
> 
> As I've recently discovered, the more recent (Dell Wireless 370+) BT
> adapters with the latest firmware don't come up in Bluetooth Radio
> mode.  They come up in a HID/UHE dongle like mode before the OS loads
> and expect the OS to transition the device to HCI mode.
> Unfortunately, the transition to HCI mode isn't done in the same
> fashion as the existing switch_hidproxy function available in hid2hci.
> I'm attaching a patch to hid2hci that adds a function for the expected
> behavior on these newer adapters. 
> 
> The device that needs to have the report sent to it is claimed by
> usbhid at OS load time, so there are some calls in there to release it
> from usbhid.
> 
> I tested this against a Dell 370 BT adapter.  This should be the same
> for the newer adapters (after the 370), but I haven't verified them
> yet, so there may be an additional patch needed for it.
> 
> Thanks,
> 
> ---
> Mario Limonciello
> Dell | Linux Engineering
> mario_limonciello@dell.com
> 
> 
> 

---
Mario Limonciello
Dell | Linux Engineering
Desk : (512) 723-0582
mario_limonciello@dell.com



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diff -Nur -x '*.orig' -x '*~' bluez-utils-3.26/tools/hid2hci.c bluez-utils-3.26.new/tools/hid2hci.c
--- bluez-utils-3.26/tools/hid2hci.c	2008-02-01 17:16:34.000000000 -0600
+++ bluez-utils-3.26.new/tools/hid2hci.c	2008-04-04 15:39:40.000000000 -0500
@@ -211,6 +211,42 @@
 	return err;
 }
 
+static int switch_dell(struct device_info *devinfo)
+{
+	char report[] = { 0x7F, 0x13, 0x00, 0x00};
+
+	struct usb_dev_handle *handle;
+	int err;
+
+	//release any locks that the kernel may have on this device
+	handle = usb_open(devinfo->dev);
+	if (handle)
+	{
+		usb_claim_interface(handle, 0);
+		usb_detach_kernel_driver_np(handle,0);
+	}
+
+	//switch device modes
+	err = usb_control_msg(handle,
+		USB_ENDPOINT_OUT + USB_TYPE_CLASS + USB_RECIP_INTERFACE,
+		0x09,
+		0x7f + (0x03 << 8),
+		0,
+		(char*)report, 4, 10000);
+
+	if (err == 0) {
+		err = -1;
+		errno = EALREADY;
+	} else {
+		if (errno == ETIMEDOUT)
+			err = 0;
+	}
+
+	usb_close(handle);
+
+	return err;
+}
+
 static struct device_id device_list[] = {
 	{ HCI, 0x0a12, 0x1000, switch_hidproxy },
 	{ HID, 0x0a12, 0x0001, switch_hidproxy },
@@ -229,6 +265,8 @@
 	{ HCI, 0x046d, 0xc70e, switch_logitech },	/* Logitech diNovo keyboard */
 	{ HCI, 0x046d, 0xc713, switch_logitech },	/* Logitech diNovo Edge */
 	{ HCI, 0x046d, 0xc714, switch_logitech },	/* Logitech diNovo Edge */
+	{ HCI, 0x413c, 0x8158, switch_dell },		/* Dell Wireless 370 */
+	{ HCI, 0x413c, 0x8154, switch_dell },		/* Dell Wireless 410 */
 	{ -1 }
 };
 

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