diff options
Diffstat (limited to 'include/linux/timer-32k.h')
| -rw-r--r-- | include/linux/timer-32k.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/timer-32k.h b/include/linux/timer-32k.h new file mode 100644 index 000000000000..aaae2ec3584a --- /dev/null +++ b/include/linux/timer-32k.h @@ -0,0 +1,44 @@ +/* + * OMAP2/3/4 timer32k driver interface + * + * Copyright (C) 2010 Texas Instruments, Inc + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef __LINUX_TIMER_32_H__ +#define __LINUX_TIMER_32_H__ + +#include <linux/ioctl.h> +#define OMAP_32K_READ _IOWR('t', 0, uint32_t) +#define OMAP_32K_READRAW _IOWR('t', 1, uint32_t) + +#ifndef __KERNEL__ +static inline uint32_t __omap_32k_call(int nr) +{ + static int fd = 0; + if (!fd) { + fd = open("/dev/timer32k", 0); + } + if (fd) { + uint32_t t; + if (ioctl(fd, nr, &t) >= 0) { + return t; + } + } + return 0; +} +static inline uint32_t omap_32k_read(void) +{ + return __omap_32k_call(OMAP_32K_READ); +} +static inline uint32_t omap_32k_readraw(void) +{ + return __omap_32k_call(OMAP_32K_READRAW); +} +#endif + +#endif /* __LINUX_TIMER_32_H__ */ + |