diff options
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/ads7846.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index adb3dafd33e..3387e44dfd1 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -5,9 +5,17 @@ * * It's OK if the min/max values are zero. */ +enum ads7846_filter { + ADS7846_FILTER_OK, + ADS7846_FILTER_REPEAT, + ADS7846_FILTER_IGNORE, +}; + struct ads7846_platform_data { u16 model; /* 7843, 7845, 7846. */ u16 vref_delay_usecs; /* 0 for external vref; etc */ + int keep_vref_on:1; /* set to keep vref on for differential + * measurements as well */ u16 x_plate_ohms; u16 y_plate_ohms; @@ -21,5 +29,9 @@ struct ads7846_platform_data { u16 debounce_rep; /* additional consecutive good readings * required after the first two */ int (*get_pendown_state)(void); + int (*filter_init) (struct ads7846_platform_data *pdata, + void **filter_data); + int (*filter) (void *filter_data, int data_idx, int *val); + void (*filter_cleanup)(void *filter_data); }; |