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| author | Henrik Rydberg <rydberg@euromail.se> | 2010-09-05 21:57:13 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-09-05 21:58:22 +0200 |
| commit | f4ccbef2886968ed409939531f6dd0474d53a12a (patch) | |
| tree | 764b513e40b681bf3bd908e40e8e3a21015d7579 /drivers/input/tablet/wacom_wac.h | |
| parent | Input: wacom - add support for the Bamboo Touch trackpad (diff) | |
| download | linux-f4ccbef2886968ed409939531f6dd0474d53a12a.tar.xz linux-f4ccbef2886968ed409939531f6dd0474d53a12a.zip | |
Input: wacom - add a quirk for low resolution Bamboo devices
The Bamboo Touch reports a sub-screen resolution of 480x320. The
signal-to-noise ratio is only about 100, so filtering is needed in
order to reduce the jitter to a usable level. However, the low
resolution leads to round-off errors in the EWMA filter, resulting in
extremely jerky pointer motion. This patch explicitly sets a higher
resolution for those devices, and tells this to the completion handler
via a low-resolution quirk.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/tablet/wacom_wac.h')
| -rw-r--r-- | drivers/input/tablet/wacom_wac.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h index a23d6a5fcc4f..00ca01541d89 100644 --- a/drivers/input/tablet/wacom_wac.h +++ b/drivers/input/tablet/wacom_wac.h @@ -40,6 +40,7 @@ /* device quirks */ #define WACOM_QUIRK_MULTI_INPUT 0x0001 +#define WACOM_QUIRK_BBTOUCH_LOWRES 0x0002 /* largest reported tracking id */ #define MAX_TRACKING_ID 0xfff |