Re: [PATCH 06/10] HID: move logitech report quirks

Jiri Slaby
2008-06-09T10:35:05Z

On 06/04/2008 03:21 PM, Jiri Kosina wrote:
> On Fri, 16 May 2008, Jiri Slaby wrote:
>
>> static const struct hid_device_id hid_blacklist[] = {
>> + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
>> + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
>> + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
>> { }
>> };
>
> This shouldn't be needed as soon as the userspace supports the proper
> module autoloading, right?

This is needed to tell generic drivers not to bind these, its' generic
blacklist. I have no idea how this could be done better with current drivers/base/.

>> +#define LOGITECH_RDESC 0x1
>> +
>> +/*
>> + * Certain Logitech keyboards send in report #3 keys which are far
>> + * above the logical maximum described in descriptor. This extends
>> + * the original value of 0x28c of logical maximum to 0x104d
>> + */
>> +static void lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
>> + unsigned int rsize)
>> +{
>> + if (rsize >= 90 && rdesc[83] == 0x26
>> + && rdesc[84] == 0x8c
>> + && rdesc[85] == 0x02) {
>> + dev_info(&hdev->dev, "fixing up Logitech keyboard report "
>> + "descriptor\n");
>> + rdesc[84] = rdesc[89] = 0x4d;
>> + rdesc[85] = rdesc[90] = 0x10;
>> + }
>> +}
>> +
>> +static const struct hid_device_id lg_devices[] = {
>> + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER),
>> + .driver_data = LOGITECH_RDESC },
>> + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER),
>> + .driver_data = LOGITECH_RDESC },
>> + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2),
>> + .driver_data = LOGITECH_RDESC },
>> + { }
>
> You set the LOGITECH_RDESC flag here, but it is then never used anywhere.
> I guess that your original intent was to check for this flag in
> lg_report_fixup(), right?

I assumed use of these in the second round (see my previous email) :). Anyway
they are useless now.