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author | Imre Deak <imre.deak@nokia.com> | 2006-04-26 04:13:18 (GMT) |
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committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-04-26 04:13:18 (GMT) |
commit | d5b415c95f0e6510451f1446cea832c1f77bd7ea (patch) | |
tree | 39bd4140c5e80082c20a1a6a4a0bad1df83b63ca /include/linux/spi | |
parent | ae82d5ab05068fccef2329f4607670f24c41606f (diff) | |
download | linux-fsl-qoriq-d5b415c95f0e6510451f1446cea832c1f77bd7ea.tar.xz |
Input: ads7846 - improve filtering for thumb press accuracy
Providing more accurate coordinates for thumb press requires additional
steps in the filtering logic:
- Ignore samples found invalid by the debouncing logic, or the ones that
have out of bound pressure value.
- Add a parameter to repeat debouncing, so that more then two consecutive
good readings are required for a valid sample.
Signed-off-by: Imre Deak <imre.deak@nokia.com>
Acked-by: Juha Yrjola <juha.yrjola@nokia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'include/linux/spi')
-rw-r--r-- | include/linux/spi/ads7846.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index d8823e2..adb3daf 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -15,9 +15,11 @@ struct ads7846_platform_data { u16 y_min, y_max; u16 pressure_min, pressure_max; - u16 debounce_max; /* max number of readings per sample */ + u16 debounce_max; /* max number of additional readings + * per sample */ u16 debounce_tol; /* tolerance used for filtering */ - + u16 debounce_rep; /* additional consecutive good readings + * required after the first two */ int (*get_pendown_state)(void); }; |