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author | H. Peter Anvin <hpa@zytor.com> | 2009-08-26 17:17:51 -0700 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2009-08-26 17:24:28 -0700 |
commit | b855192c08fcb14adbc5d3a7cab182022d433cca (patch) | |
tree | 3a10cafbfbf98cafacf667eb218c71300b351bfa /include/linux/input/matrix_keypad.h | |
parent | d886c73cd4cf02a71e1650cbcb6176799d78aac1 (diff) | |
parent | 3e0e1e9c5a327d4dba8490d83ef55c0564e6e8a7 (diff) |
Merge branch 'x86/urgent' into x86/pat
Reason: Change to is_new_memtype_allowed() in x86/urgent
Resolved semantic conflicts in:
arch/x86/mm/pat.c
arch/x86/mm/ioremap.c
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/linux/input/matrix_keypad.h')
-rw-r--r-- | include/linux/input/matrix_keypad.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h new file mode 100644 index 00000000000..15d5903af2d --- /dev/null +++ b/include/linux/input/matrix_keypad.h @@ -0,0 +1,66 @@ +#ifndef _MATRIX_KEYPAD_H +#define _MATRIX_KEYPAD_H + +#include <linux/types.h> +#include <linux/input.h> + +#define MATRIX_MAX_ROWS 16 +#define MATRIX_MAX_COLS 16 + +#define KEY(row, col, val) ((((row) & (MATRIX_MAX_ROWS - 1)) << 24) |\ + (((col) & (MATRIX_MAX_COLS - 1)) << 16) |\ + (val & 0xffff)) + +#define KEY_ROW(k) (((k) >> 24) & 0xff) +#define KEY_COL(k) (((k) >> 16) & 0xff) +#define KEY_VAL(k) ((k) & 0xffff) + +#define MATRIX_SCAN_CODE(row, col, row_shift) (((row) << (row_shift)) + (col)) + +/** + * struct matrix_keymap_data - keymap for matrix keyboards + * @keymap: pointer to array of uint32 values encoded with KEY() macro + * representing keymap + * @keymap_size: number of entries (initialized) in this keymap + * + * This structure is supposed to be used by platform code to supply + * keymaps to drivers that implement matrix-like keypads/keyboards. + */ +struct matrix_keymap_data { + const uint32_t *keymap; + unsigned int keymap_size; +}; + +/** + * struct matrix_keypad_platform_data - platform-dependent keypad data + * @keymap_data: pointer to &matrix_keymap_data + * @row_gpios: pointer to array of gpio numbers representing rows + * @col_gpios: pointer to array of gpio numbers reporesenting colums + * @num_row_gpios: actual number of row gpios used by device + * @num_col_gpios: actual number of col gpios used by device + * @col_scan_delay_us: delay, measured in microseconds, that is + * needed before we can keypad after activating column gpio + * @debounce_ms: debounce interval in milliseconds + * + * This structure represents platform-specific data that use used by + * matrix_keypad driver to perform proper initialization. + */ +struct matrix_keypad_platform_data { + const struct matrix_keymap_data *keymap_data; + + const unsigned int *row_gpios; + const unsigned int *col_gpios; + + unsigned int num_row_gpios; + unsigned int num_col_gpios; + + unsigned int col_scan_delay_us; + + /* key debounce interval in milli-second */ + unsigned int debounce_ms; + + bool active_low; + bool wakeup; +}; + +#endif /* _MATRIX_KEYPAD_H */ |