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input: Allow key ghosting filter to be disabled

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Some keyboards will not need a key ghosting filter, so make this feature
optional.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2012-09-27 15:18:42 +00:00 • committed by Tom Rini
parent 1b1d3e6461
commit 71dc6bca4e
3 changed files with 12 additions and 4 deletions
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5
include/key_matrix.h
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@ -40,6 +40,7 @@ struct key_matrix {
const u8 *plain_keycode; /* key code for each row / column */
const u8 *fn_keycode; /* ...when Fn held down */
int fn_pos; /* position of Fn key in key (or -1) */
int ghost_filter; /* non-zero to enable ghost filter */
};
/* Information about a particular key (row, column pair) in the matrix */
@ -92,8 +93,10 @@ int key_matrix_decode_fdt(struct key_matrix *config, const void *blob,
* @param config Keyboard matrix config
* @param rows Number of rows in key matrix
* @param cols Number of columns in key matrix
* @param ghost_filter Non-zero to enable ghost filtering
* @return 0 if ok, -1 on error
*/
int key_matrix_init(struct key_matrix *config, int rows, int cols);
int key_matrix_init(struct key_matrix *config, int rows, int cols,
int ghost_filter);
#endif