Linux Audio
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Embedded Linux Audio
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#ifndef _LINUX_TIMEKEEPING_H #define _LINUX_TIMEKEEPING_H /* Included from linux/ktime.h */ void timekeeping_init(void); extern int timekeeping_suspended; /* * Get and set timeofday */ extern void do_gettimeofday(struct timeval *tv); extern int do_settimeofday(const struct timespec *tv); extern int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz); /* * Kernel time accessors */ unsigned long get_seconds(void); struct timespec current_kernel_time(void); /* does not take xtime_lock */ struct timespec __current_kernel_time(void); /* * timespec based interfaces */ struct timespec get_monotonic_coarse(void); extern void getrawmonotonic(struct timespec *ts); extern void ktime_get_ts64(struct timespec64 *ts); extern int __getnstimeofday64(struct timespec64 *tv); extern void getnstimeofday64(struct timespec64 *tv); #if BITS_PER_LONG == 64 static inline int __getnstimeofday(struct timespec *ts) { return __getnstimeofday64(ts); } static inline void getnstimeofday(struct timespec *ts) { getnstimeofday64(ts); } static inline void ktime_get_ts(struct timespec *ts) { ktime_get_ts64(ts); } static inline void ktime_get_real_ts(struct timespec *ts) { getnstimeofday64(ts); } #else static inline int __getnstimeofday(struct timespec *ts) { struct timespec64 ts64; int ret = __getnstimeofday64(&ts64); *ts = timespec64_to_timespec(ts64); return ret; } static inline void getnstimeofday(struct timespec *ts) { struct timespec64 ts64; getnstimeofday64(&ts64); *ts = timespec64_to_timespec(ts64); } static inline void ktime_get_ts(struct timespec *ts) { struct timespec64 ts64; ktime_get_ts64(&ts64); *ts = timespec64_to_timespec(ts64); } static inline void ktime_get_real_ts(struct timespec *ts) { struct timespec64 ts64; getnstimeofday64(&ts64); *ts = timespec64_to_timespec(ts64); } #endif extern void getboottime(struct timespec *ts); #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) #define ktime_get_real_ts64(ts) getnstimeofday64(ts) /* * ktime_t based interfaces */ enum tk_offsets { TK_OFFS_REAL, TK_OFFS_BOOT, TK_OFFS_TAI, TK_OFFS_MAX, }; extern ktime_t ktime_get(void); extern ktime_t ktime_get_with_offset(enum tk_offsets offs); extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs); extern ktime_t ktime_get_raw(void); /** * ktime_get_real - get the real (wall-) time in ktime_t format */ static inline ktime_t ktime_get_real(void) { return ktime_get_with_offset(TK_OFFS_REAL); } /** * ktime_get_boottime - Returns monotonic time since boot in ktime_t format * * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the * time spent in suspend. */ static inline ktime_t ktime_get_boottime(void) { return ktime_get_with_offset(TK_OFFS_BOOT); } /** * ktime_get_clocktai - Returns the TAI time of day in ktime_t format */ static inline ktime_t ktime_get_clocktai(void) { return ktime_get_with_offset(TK_OFFS_TAI); } /** * ktime_mono_to_real - Convert monotonic time to clock realtime */ static inline ktime_t ktime_mono_to_real(ktime_t mono) { return ktime_mono_to_any(mono, TK_OFFS_REAL); } static inline u64 ktime_get_ns(void) { return ktime_to_ns(ktime_get()); } static inline u64 ktime_get_real_ns(void) { return ktime_to_ns(ktime_get_real()); } static inline u64 ktime_get_boot_ns(void) { return ktime_to_ns(ktime_get_boottime()); } static inline u64 ktime_get_raw_ns(void) { return ktime_to_ns(ktime_get_raw()); } extern u64 ktime_get_mono_fast_ns(void); /* * Timespec interfaces utilizing the ktime based ones */ static inline void get_monotonic_boottime(struct timespec *ts) { *ts = ktime_to_timespec(ktime_get_boottime()); } static inline void timekeeping_clocktai(struct timespec *ts) { *ts = ktime_to_timespec(ktime_get_clocktai()); } /* * RTC specific */ extern void timekeeping_inject_sleeptime(struct timespec *delta); /* * PPS accessor */ extern void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real); /* * Persistent clock related interfaces */ extern bool persistent_clock_exist; extern int persistent_clock_is_local; static inline bool has_persistent_clock(void) { return persistent_clock_exist; } extern void read_persistent_clock(struct timespec *ts); extern void read_boot_clock(struct timespec *ts); extern int update_persistent_clock(struct timespec now); #endif