diff options
Diffstat (limited to 'include/linux/clockchips.h')
| -rw-r--r-- | include/linux/clockchips.h | 87 |
1 files changed, 41 insertions, 46 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 3ac7e2d90374..caeca76d7b32 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -22,17 +22,17 @@ enum clock_event_nofitiers { #ifdef CONFIG_GENERIC_CLOCKEVENTS -#include <linux/clocksource.h> -#include <linux/cpumask.h> -#include <linux/ktime.h> -#include <linux/notifier.h> +# include <linux/clocksource.h> +# include <linux/cpumask.h> +# include <linux/ktime.h> +# include <linux/notifier.h> struct clock_event_device; struct module; /* Clock event mode commands for legacy ->set_mode(): OBSOLETE */ enum clock_event_mode { - CLOCK_EVT_MODE_UNUSED = 0, + CLOCK_EVT_MODE_UNUSED, CLOCK_EVT_MODE_SHUTDOWN, CLOCK_EVT_MODE_PERIODIC, CLOCK_EVT_MODE_ONESHOT, @@ -51,7 +51,7 @@ enum clock_event_mode { * from DETACHED or SHUTDOWN. */ enum clock_event_state { - CLOCK_EVT_STATE_DETACHED = 0, + CLOCK_EVT_STATE_DETACHED, CLOCK_EVT_STATE_SHUTDOWN, CLOCK_EVT_STATE_PERIODIC, CLOCK_EVT_STATE_ONESHOT, @@ -60,28 +60,29 @@ enum clock_event_state { /* * Clock event features */ -#define CLOCK_EVT_FEAT_PERIODIC 0x000001 -#define CLOCK_EVT_FEAT_ONESHOT 0x000002 -#define CLOCK_EVT_FEAT_KTIME 0x000004 +# define CLOCK_EVT_FEAT_PERIODIC 0x000001 +# define CLOCK_EVT_FEAT_ONESHOT 0x000002 +# define CLOCK_EVT_FEAT_KTIME 0x000004 + /* - * x86(64) specific misfeatures: + * x86(64) specific (mis)features: * * - Clockevent source stops in C3 State and needs broadcast support. * - Local APIC timer is used as a dummy device. */ -#define CLOCK_EVT_FEAT_C3STOP 0x000008 -#define CLOCK_EVT_FEAT_DUMMY 0x000010 +# define CLOCK_EVT_FEAT_C3STOP 0x000008 +# define CLOCK_EVT_FEAT_DUMMY 0x000010 /* * Core shall set the interrupt affinity dynamically in broadcast mode */ -#define CLOCK_EVT_FEAT_DYNIRQ 0x000020 -#define CLOCK_EVT_FEAT_PERCPU 0x000040 +# define CLOCK_EVT_FEAT_DYNIRQ 0x000020 +# define CLOCK_EVT_FEAT_PERCPU 0x000040 /* * Clockevent device is based on a hrtimer for broadcast */ -#define CLOCK_EVT_FEAT_HRTIMER 0x000080 +# define CLOCK_EVT_FEAT_HRTIMER 0x000080 /** * struct clock_event_device - clock event device descriptor @@ -116,10 +117,8 @@ enum clock_event_state { */ struct clock_event_device { void (*event_handler)(struct clock_event_device *); - int (*set_next_event)(unsigned long evt, - struct clock_event_device *); - int (*set_next_ktime)(ktime_t expires, - struct clock_event_device *); + int (*set_next_event)(unsigned long evt, struct clock_event_device *); + int (*set_next_ktime)(ktime_t expires, struct clock_event_device *); ktime_t next_event; u64 max_delta_ns; u64 min_delta_ns; @@ -136,8 +135,7 @@ struct clock_event_device { * - set_mode(), only for modes <= CLOCK_EVT_MODE_RESUME. * - set_state_{shutdown|periodic|oneshot}(), tick_resume(). */ - void (*set_mode)(enum clock_event_mode mode, - struct clock_event_device *); + void (*set_mode)(enum clock_event_mode mode, struct clock_event_device *); int (*set_state_periodic)(struct clock_event_device *); int (*set_state_oneshot)(struct clock_event_device *); int (*set_state_shutdown)(struct clock_event_device *); @@ -169,18 +167,18 @@ struct clock_event_device { * * factor = (clock_ticks << shift) / nanoseconds */ -static inline unsigned long div_sc(unsigned long ticks, unsigned long nsec, - int shift) +static inline unsigned long +div_sc(unsigned long ticks, unsigned long nsec, int shift) { - uint64_t tmp = ((uint64_t)ticks) << shift; + u64 tmp = ((u64)ticks) << shift; do_div(tmp, nsec); + return (unsigned long) tmp; } /* Clock event layer functions */ -extern u64 clockevent_delta2ns(unsigned long latch, - struct clock_event_device *evt); +extern u64 clockevent_delta2ns(unsigned long latch, struct clock_event_device *evt); extern void clockevents_register_device(struct clock_event_device *dev); extern int clockevents_unbind_device(struct clock_event_device *ced, int cpu); @@ -194,42 +192,39 @@ extern int clockevents_update_freq(struct clock_event_device *ce, u32 freq); static inline void clockevents_calc_mult_shift(struct clock_event_device *ce, u32 freq, u32 minsec) { - return clocks_calc_mult_shift(&ce->mult, &ce->shift, NSEC_PER_SEC, - freq, minsec); + return clocks_calc_mult_shift(&ce->mult, &ce->shift, NSEC_PER_SEC, freq, minsec); } extern void clockevents_suspend(void); extern void clockevents_resume(void); -#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST -#ifdef CONFIG_ARCH_HAS_TICK_BROADCAST +# ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST +# ifdef CONFIG_ARCH_HAS_TICK_BROADCAST extern void tick_broadcast(const struct cpumask *mask); -#else -#define tick_broadcast NULL -#endif +# else +# define tick_broadcast NULL +# endif extern int tick_receive_broadcast(void); -#endif +# endif -#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT) +# if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT) extern void tick_setup_hrtimer_broadcast(void); extern int tick_check_broadcast_expired(void); -#else +# else static inline int tick_check_broadcast_expired(void) { return 0; } -static inline void tick_setup_hrtimer_broadcast(void) {}; -#endif +static inline void tick_setup_hrtimer_broadcast(void) { } +# endif extern int clockevents_notify(unsigned long reason, void *arg); -#else /* CONFIG_GENERIC_CLOCKEVENTS */ - -static inline void clockevents_suspend(void) {} -static inline void clockevents_resume(void) {} +#else /* !CONFIG_GENERIC_CLOCKEVENTS: */ +static inline void clockevents_suspend(void) { } +static inline void clockevents_resume(void) { } static inline int clockevents_notify(unsigned long reason, void *arg) { return 0; } static inline int tick_check_broadcast_expired(void) { return 0; } -static inline void tick_setup_hrtimer_broadcast(void) {}; -static inline int clockevents_notify(unsigned long reason, void *arg) { return 0; } +static inline void tick_setup_hrtimer_broadcast(void) { } -#endif +#endif /* !CONFIG_GENERIC_CLOCKEVENTS */ -#endif +#endif /* _LINUX_CLOCKCHIPS_H */ |