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| author | H Hartley Sweeten <hartleys@visionengravers.com> | 2009-04-18 23:43:57 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-04-18 23:44:59 -0700 |
| commit | e06003af56c386018f0c209608ac6c6662228cc0 (patch) | |
| tree | 4db5a03163a51f900dc3f777929017b92dedca7b /arch/arm/mach-ep93xx | |
| parent | 864fe73c312ca8e177da01207ce86fb1b80b3e54 (diff) | |
| download | linux-e06003af56c386018f0c209608ac6c6662228cc0.tar.gz linux-e06003af56c386018f0c209608ac6c6662228cc0.tar.bz2 linux-e06003af56c386018f0c209608ac6c6662228cc0.zip | |
Input: add matrix keypad driver for Cirrus EP93xx
This is a keyboard driver for the Cirrus Logic EP93xx keypad matrix
peripheral. This driver is based on the pxa27x_keypad driver.
[dtor@mail.ru: Plug in input_dev->keycode so keymap can be changed
from userspace.]
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'arch/arm/mach-ep93xx')
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h new file mode 100644 index 000000000000..83f31cd0a274 --- /dev/null +++ b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h @@ -0,0 +1,42 @@ +/* + * arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h + */ + +#ifndef __ASM_ARCH_EP93XX_KEYPAD_H +#define __ASM_ARCH_EP93XX_KEYPAD_H + +#define MAX_MATRIX_KEY_ROWS (8) +#define MAX_MATRIX_KEY_COLS (8) + +/* flags for the ep93xx_keypad driver */ +#define EP93XX_KEYPAD_DISABLE_3_KEY (1<<0) /* disable 3-key reset */ +#define EP93XX_KEYPAD_DIAG_MODE (1<<1) /* diagnostic mode */ +#define EP93XX_KEYPAD_BACK_DRIVE (1<<2) /* back driving mode */ +#define EP93XX_KEYPAD_TEST_MODE (1<<3) /* scan only column 0 */ +#define EP93XX_KEYPAD_KDIV (1<<4) /* 1/4 clock or 1/16 clock */ +#define EP93XX_KEYPAD_AUTOREPEAT (1<<5) /* enable key autorepeat */ + +/** + * struct ep93xx_keypad_platform_data - platform specific device structure + * @matrix_key_rows: number of rows in the keypad matrix + * @matrix_key_cols: number of columns in the keypad matrix + * @matrix_key_map: array of keycodes defining the keypad matrix + * @matrix_key_map_size: ARRAY_SIZE(matrix_key_map) + * @debounce: debounce start count; terminal count is 0xff + * @prescale: row/column counter pre-scaler load value + * @flags: see above + */ +struct ep93xx_keypad_platform_data { + unsigned int matrix_key_rows; + unsigned int matrix_key_cols; + unsigned int *matrix_key_map; + int matrix_key_map_size; + unsigned int debounce; + unsigned int prescale; + unsigned int flags; +}; + +/* macro for creating the matrix_key_map table */ +#define KEY(row, col, val) (((row) << 28) | ((col) << 24) | (val)) + +#endif /* __ASM_ARCH_EP93XX_KEYPAD_H */ |