lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

HID: add autodetection of multitouch devices

Browse Source 
As mentioned by http://www.microsoft.com/whdc/device/input/DigitizerDrvs_touch.mspx
multitouch devices are those that have the input report HID_CONTACTID.

This patch detects this and unloads the generic-usb driver.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires
2011-09-21 16:56:54 +02:00
committed by Jiri Kosina
parent a062cc5a76
commit b77c3920e9
3 changed files with 18 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/hid/hid-core.c
View File

@@ -1212,6 +1212,12 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
connect_mask & HID_CONNECT_HIDINPUT_FORCE))
hdev->claimed |= HID_CLAIMED_INPUT;
if (hdev->quirks & HID_QUIRK_MULTITOUCH) {
/* this device should be handled by hid-multitouch, skip it */
hdev->quirks &= ~HID_QUIRK_MULTITOUCH;
return -ENODEV;
}
if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
!hdev->hiddev_connect(hdev,
connect_mask & HID_CONNECT_HIDDEV_FORCE))