ALSA: hda/realtek - Don't create alt-stream for capture when unnecessary
[pandora-kernel.git] / kernel / time / tick-internal.h
1 /*
2  * tick internal variable and functions used by low/high res code
3  */
4 #include <linux/hrtimer.h>
5 #include <linux/tick.h>
6
7 #ifdef CONFIG_GENERIC_CLOCKEVENTS_BUILD
8
9 #define TICK_DO_TIMER_NONE      -1
10 #define TICK_DO_TIMER_BOOT      -2
11
12 DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
13 extern ktime_t tick_next_period;
14 extern ktime_t tick_period;
15 extern int tick_do_timer_cpu __read_mostly;
16
17 extern void tick_setup_periodic(struct clock_event_device *dev, int broadcast);
18 extern void tick_handle_periodic(struct clock_event_device *dev);
19
20 extern void clockevents_shutdown(struct clock_event_device *dev);
21
22 /*
23  * NO_HZ / high resolution timer shared code
24  */
25 #ifdef CONFIG_TICK_ONESHOT
26 extern void tick_setup_oneshot(struct clock_event_device *newdev,
27                                void (*handler)(struct clock_event_device *),
28                                ktime_t nextevt);
29 extern int tick_dev_program_event(struct clock_event_device *dev,
30                                   ktime_t expires, int force);
31 extern int tick_program_event(ktime_t expires, int force);
32 extern void tick_oneshot_notify(void);
33 extern int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *));
34 extern void tick_resume_oneshot(void);
35 # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
36 extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc);
37 extern void tick_broadcast_oneshot_control(unsigned long reason);
38 extern void tick_broadcast_switch_to_oneshot(void);
39 extern void tick_shutdown_broadcast_oneshot(unsigned int *cpup);
40 extern int tick_resume_broadcast_oneshot(struct clock_event_device *bc);
41 extern int tick_broadcast_oneshot_active(void);
42 extern void tick_check_oneshot_broadcast(int cpu);
43 bool tick_broadcast_oneshot_available(void);
44 # else /* BROADCAST */
45 static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
46 {
47         BUG();
48 }
49 static inline void tick_broadcast_oneshot_control(unsigned long reason) { }
50 static inline void tick_broadcast_switch_to_oneshot(void) { }
51 static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { }
52 static inline int tick_broadcast_oneshot_active(void) { return 0; }
53 static inline void tick_check_oneshot_broadcast(int cpu) { }
54 static inline bool tick_broadcast_oneshot_available(void) { return true; }
55 # endif /* !BROADCAST */
56
57 #else /* !ONESHOT */
58 static inline
59 void tick_setup_oneshot(struct clock_event_device *newdev,
60                         void (*handler)(struct clock_event_device *),
61                         ktime_t nextevt)
62 {
63         BUG();
64 }
65 static inline void tick_resume_oneshot(void)
66 {
67         BUG();
68 }
69 static inline int tick_program_event(ktime_t expires, int force)
70 {
71         return 0;
72 }
73 static inline void tick_oneshot_notify(void) { }
74 static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
75 {
76         BUG();
77 }
78 static inline void tick_broadcast_oneshot_control(unsigned long reason) { }
79 static inline void tick_shutdown_broadcast_oneshot(unsigned int *cpup) { }
80 static inline int tick_resume_broadcast_oneshot(struct clock_event_device *bc)
81 {
82         return 0;
83 }
84 static inline int tick_broadcast_oneshot_active(void) { return 0; }
85 static inline bool tick_broadcast_oneshot_available(void) { return false; }
86 #endif /* !TICK_ONESHOT */
87
88 /*
89  * Broadcasting support
90  */
91 #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
92 extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu);
93 extern int tick_check_broadcast_device(struct clock_event_device *dev);
94 extern int tick_is_broadcast_device(struct clock_event_device *dev);
95 extern void tick_broadcast_on_off(unsigned long reason, int *oncpu);
96 extern void tick_shutdown_broadcast(unsigned int *cpup);
97 extern void tick_suspend_broadcast(void);
98 extern int tick_resume_broadcast(void);
99
100 extern void
101 tick_set_periodic_handler(struct clock_event_device *dev, int broadcast);
102
103 #else /* !BROADCAST */
104
105 static inline int tick_check_broadcast_device(struct clock_event_device *dev)
106 {
107         return 0;
108 }
109
110 static inline int tick_is_broadcast_device(struct clock_event_device *dev)
111 {
112         return 0;
113 }
114 static inline int tick_device_uses_broadcast(struct clock_event_device *dev,
115                                              int cpu)
116 {
117         return 0;
118 }
119 static inline void tick_do_periodic_broadcast(struct clock_event_device *d) { }
120 static inline void tick_broadcast_on_off(unsigned long reason, int *oncpu) { }
121 static inline void tick_shutdown_broadcast(unsigned int *cpup) { }
122 static inline void tick_suspend_broadcast(void) { }
123 static inline int tick_resume_broadcast(void) { return 0; }
124
125 /*
126  * Set the periodic handler in non broadcast mode
127  */
128 static inline void tick_set_periodic_handler(struct clock_event_device *dev,
129                                              int broadcast)
130 {
131         dev->event_handler = tick_handle_periodic;
132 }
133 #endif /* !BROADCAST */
134
135 /*
136  * Check, if the device is functional or a dummy for broadcast
137  */
138 static inline int tick_device_is_functional(struct clock_event_device *dev)
139 {
140         return !(dev->features & CLOCK_EVT_FEAT_DUMMY);
141 }
142
143 #endif
144
145 extern void do_timer(unsigned long ticks);
146 extern seqlock_t xtime_lock;