| Tony Lindgren | f4e4c32 | 2006-12-07 13:57:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * GPIO switch definitions |
| 3 | * |
| 4 | * Copyright (C) 2006 Nokia Corporation |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #ifndef __ASM_ARCH_OMAP_GPIO_SWITCH_H |
| 12 | #define __ASM_ARCH_OMAP_GPIO_SWITCH_H |
| 13 | |
| 14 | #include <linux/types.h> |
| 15 | |
| 16 | /* Cover: |
| 17 | * high -> closed |
| 18 | * low -> open |
| 19 | * Connection: |
| 20 | * high -> connected |
| 21 | * low -> disconnected |
| 22 | * Activity: |
| 23 | * high -> active |
| 24 | * low -> inactive |
| 25 | * |
| 26 | */ |
| 27 | #define OMAP_GPIO_SWITCH_TYPE_COVER 0x0000 |
| 28 | #define OMAP_GPIO_SWITCH_TYPE_CONNECTION 0x0001 |
| 29 | #define OMAP_GPIO_SWITCH_TYPE_ACTIVITY 0x0002 |
| 30 | #define OMAP_GPIO_SWITCH_FLAG_INVERTED 0x0001 |
| 31 | #define OMAP_GPIO_SWITCH_FLAG_OUTPUT 0x0002 |
| 32 | |
| 33 | struct omap_gpio_switch { |
| 34 | const char *name; |
| 35 | s16 gpio; |
| 36 | unsigned flags:4; |
| 37 | unsigned type:4; |
| 38 | |
| 39 | /* Time in ms to debounce when transitioning from |
| 40 | * inactive state to active state. */ |
| 41 | u16 debounce_rising; |
| 42 | /* Same for transition from active to inactive state. */ |
| 43 | u16 debounce_falling; |
| 44 | |
| 45 | /* notify board-specific code about state changes */ |
| 46 | void (* notify)(void *data, int state); |
| 47 | void *notify_data; |
| 48 | }; |
| 49 | |
| 50 | /* Call at init time only */ |
| 51 | extern void omap_register_gpio_switches(const struct omap_gpio_switch *tbl, |
| 52 | int count); |
| 53 | |
| 54 | #endif |