linux/drivers/hid/usbhid
Philipp Merkel f51661105c HID: Fix for problems with eGalax/DWAV multi-touch-screen
This patch fixes three problems with the eGalax/DWAV multi-touch
screen found in the Eee PC T101MT:

1) While there is a dedicated multitouch driver for the screen
   (hid-egalax.c), the MULTI_INPUT quirk is also applied, preventing
   the hid-egalax driver from working. This patch removes the quirk
   so the hid-egalax driver can handle the device correctly.
2) The x and y coordinates sent by the screen in multi-touch mode are
   shifted by three bits from the events sent in single-touch mode, thus
   the coordinates are out of range, leading to the pointer being stuck
   in the bottom-right corner if no additional calibration is applied
   (e.g. in the X evdev driver). This patch shifts the coordinates back.
   This does not decrease accuracy as the last three bits of the "wrong"
   coordinates are always 0.
3) Only multi-touch pressure events are sent, single touch emulation is
   missing pressure information. This patch adds single-touch
   ABS_PRESSURE events.

Signed-off-by: Philipp Merkel <mail@philmerk.de>
Acked-by: Stéphane Chatty <chatty@enac.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-10-01 15:39:51 +02:00
..
hid-core.c HID: fix hiddev's use of usb_find_interface 2010-09-14 10:58:42 +02:00
hid-pidff.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
hid-quirks.c HID: Fix for problems with eGalax/DWAV multi-touch-screen 2010-10-01 15:39:51 +02:00
hiddev.c HID: fix hiddev's use of usb_find_interface 2010-09-14 10:58:42 +02:00
Kconfig HID: make boot protocol drivers depend on EMBEDDED 2009-01-04 01:00:53 +01:00
Makefile HID: remove hid-ff 2008-10-14 23:51:01 +02:00
usbhid.h HID: fix hiddev's use of usb_find_interface 2010-09-14 10:58:42 +02:00
usbkbd.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2010-05-21 10:51:03 -07:00
usbmouse.c USB: rename usb_buffer_alloc() and usb_buffer_free() users 2010-05-20 13:21:38 -07:00