/**
* alarmtimer_init - Initialize alarm timer code
*
* This function initializes the alarm bases and registers
* the posix clock ids.
*/
static int __init alarmtimer_init(void)
{
int error = 0;
int i;
struct k_clock alarm_clock = {
.clock_getres = alarm_clock_getres,
.clock_get = alarm_clock_get,
.timer_create = alarm_timer_create,
.timer_set = alarm_timer_set,
.timer_del = alarm_timer_del,
.timer_get = alarm_timer_get,
.nsleep = alarm_timer_nsleep,
};
posix_timers_register_clock(CLOCK_REALTIME_ALARM, &alarm_clock);
posix_timers_register_clock(CLOCK_BOOTTIME_ALARM, &alarm_clock);
/* Initialize alarm bases */
alarm_bases[ALARM_REALTIME].base_clockid = CLOCK_REALTIME;
alarm_bases[ALARM_REALTIME].gettime = &ktime_get_real;
alarm_bases[ALARM_BOOTTIME].base_clockid = CLOCK_BOOTTIME;
alarm_bases[ALARM_BOOTTIME].gettime = &ktime_get_boottime;
for (i = 0; i < ALARM_NUMTYPE; i++) {
timerqueue_init_head(&alarm_bases[i].timerqueue);
spin_lock_init(&alarm_bases[i].lock);
hrtimer_init(&alarm_bases[i].timer,
alarm_bases[i].base_clockid,
HRTIMER_MODE_ABS);
alarm_bases[i].timer.function = alarmtimer_fired;
}
error = platform_driver_register(&alarmtimer_driver);
platform_device_register_simple("alarmtimer", -1, NULL, 0);
return error;
}
/*
* Functions related to boot-time initialization:
*/
static void __cpuinit init_hrtimers_cpu(int cpu)
{
struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
int i;
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
cpu_base->clock_base[i].cpu_base = cpu_base;
timerqueue_init_head(&cpu_base->clock_base[i].active);
}
hrtimer_init_hres(cpu_base);
}
/*
* Functions related to boot-time initialization:
*/
int hrtimers_prepare_cpu(unsigned int cpu)
{
struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
int i;
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
cpu_base->clock_base[i].cpu_base = cpu_base;
timerqueue_init_head(&cpu_base->clock_base[i].active);
}
cpu_base->cpu = cpu;
hrtimer_init_hres(cpu_base);
return 0;
}
/*
* Functions related to boot-time initialization:
*/
static void __cpuinit init_hrtimers_cpu(int cpu)
{
struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
int i;
unsigned long flags;
raw_spin_lock_irqsave(&cpu_base->lock, flags);
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
cpu_base->clock_base[i].cpu_base = cpu_base;
timerqueue_init_head(&cpu_base->clock_base[i].active);
}
hrtimer_init_hres(cpu_base);
raw_spin_unlock_irqrestore(&cpu_base->lock, flags);
}
/*
* Functions related to boot-time initialization:
*/
static void __cpuinit init_hrtimers_cpu(int cpu)
{
struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
int *lock_init = &per_cpu(hrtimer_base_lock_init, cpu);
int i;
if ((*lock_init) != cpu) {
*lock_init = cpu;
raw_spin_lock_init(&cpu_base->lock);
pr_info("hrtimer base lock initialized for cpu%d\n", cpu);
}
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
cpu_base->clock_base[i].cpu_base = cpu_base;
timerqueue_init_head(&cpu_base->clock_base[i].active);
}
hrtimer_init_hres(cpu_base);
}
/*
* Functions related to boot-time initialization:
*/
static void __cpuinit init_hrtimers_cpu(int cpu)
{
struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
static char __cpuinitdata cpu_base_done[NR_CPUS];
int i;
unsigned long flags;
if (!cpu_base_done[cpu]) {
raw_spin_lock_init(&cpu_base->lock);
cpu_base_done[cpu] = 1;
}
raw_spin_lock_irqsave(&cpu_base->lock, flags);
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
cpu_base->clock_base[i].cpu_base = cpu_base;
timerqueue_init_head(&cpu_base->clock_base[i].active);
}
hrtimer_init_hres(cpu_base);
raw_spin_unlock_irqrestore(&cpu_base->lock, flags);
}
