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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
drivers/input/mouse/synaptics.h
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@ -97,6 +97,8 @@ struct synaptics_data {
unsigned long int capabilities; /* Capabilities */
unsigned long int ext_cap; /* Extended Capabilities */
unsigned long int identity; /* Identification */
int x_res; /* X resolution in units/mm */
int y_res; /* Y resolution in units/mm */
unsigned char pkt_type; /* packet type - old, new, etc */
unsigned char mode; /* current mode byte */