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HID: allow resizing and replacing report descriptors

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Update hid_driver's report_fixup prototype to allow changing report
descriptor size and/or returning completely different report descriptor.
Update existing usage accordingly.

This is to give more freedom in descriptor fixup and to allow having a whole
fixed descriptor in the code for the sake of readability.

Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Nikolai Kondrashov
2010-08-06 23:03:06 +04:00
committed by Jiri Kosina
parent 3cfc2c42c1
commit 73e4008ddd
17 changed files with 72 additions and 56 deletions
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7
drivers/hid/hid-kye.c
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@@ -23,10 +23,10 @@
* - report size 8 count 1 must be size 1 count 8 for button bitfield
* - change the button usage range to 4-7 for the extra buttons
*/
static void kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int rsize)
static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (rsize >= 74 &&
if (*rsize >= 74 &&
rdesc[61] == 0x05 && rdesc[62] == 0x08 &&
rdesc[63] == 0x19 && rdesc[64] == 0x08 &&
rdesc[65] == 0x29 && rdesc[66] == 0x0f &&
@@ -40,6 +40,7 @@ static void kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
rdesc[72] = 0x01;
rdesc[74] = 0x08;
}
return rdesc;
}
static const struct hid_device_id kye_devices[] = {