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Input: synaptics - add support for reporting x/y resolution

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Synaptics uses anisotropic coordinate system.  On some wide touchpads
vertical resolution can be twice as high as horizontal which causes
unequal sensitivity on x/y directions.  Add support for reading the
resolution with EVIOCGABS ioctl.

Signed-off-by: Tero Saarni <tero.saarni@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Tero Saarni 2009-06-10 23:27:24 -07:00 • committed by Dmitry Torokhov
parent d7ed5d883c
commit ec20a022aa
4 changed files with 41 additions and 3 deletions
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2
include/linux/input.h
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@ -53,6 +53,7 @@ struct input_absinfo {
__s32 maximum;
__s32 fuzz;
__s32 flat;
__s32 resolution;
};
#define EVIOCGVERSION _IOR('E', 0x01, int) /* get driver version */
@ -1109,6 +1110,7 @@ struct input_dev {
int absmin[ABS_MAX + 1];
int absfuzz[ABS_MAX + 1];
int absflat[ABS_MAX + 1];
int absres[ABS_MAX + 1];
int (*open)(struct input_dev *dev);
void (*close)(struct input_dev *dev);