diff options
Diffstat (limited to 'include/asm-arm/arch-omap/gpio-switch.h')
| -rw-r--r-- | include/asm-arm/arch-omap/gpio-switch.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/gpio-switch.h b/include/asm-arm/arch-omap/gpio-switch.h new file mode 100644 index 00000000000..10da0e07c0c --- /dev/null +++ b/include/asm-arm/arch-omap/gpio-switch.h @@ -0,0 +1,54 @@ +/* + * GPIO switch definitions + * + * Copyright (C) 2006 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_ARCH_OMAP_GPIO_SWITCH_H +#define __ASM_ARCH_OMAP_GPIO_SWITCH_H + +#include <linux/types.h> + +/* Cover: + * high -> closed + * low -> open + * Connection: + * high -> connected + * low -> disconnected + * Activity: + * high -> active + * low -> inactive + * + */ +#define OMAP_GPIO_SWITCH_TYPE_COVER 0x0000 +#define OMAP_GPIO_SWITCH_TYPE_CONNECTION 0x0001 +#define OMAP_GPIO_SWITCH_TYPE_ACTIVITY 0x0002 +#define OMAP_GPIO_SWITCH_FLAG_INVERTED 0x0001 +#define OMAP_GPIO_SWITCH_FLAG_OUTPUT 0x0002 + +struct omap_gpio_switch { + const char *name; + s16 gpio; + unsigned flags:4; + unsigned type:4; + + /* Time in ms to debounce when transitioning from + * inactive state to active state. */ + u16 debounce_rising; + /* Same for transition from active to inactive state. */ + u16 debounce_falling; + + /* notify board-specific code about state changes */ + void (* notify)(void *data, int state); + void *notify_data; +}; + +/* Call at init time only */ +extern void omap_register_gpio_switches(const struct omap_gpio_switch *tbl, + int count); + +#endif |