Merge branch 'gfar' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc...

[powerpc.git] / include / linux / spi / ads7846.h

diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index 72261e0..3387e44 100644 (file)
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -5,14 +5,33 @@
  *
  * 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;
 
        u16     x_min, x_max;
        u16     y_min, y_max;
        u16     pressure_min, pressure_max;
+
+       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);
+       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);
 };