static void em_sti_clock_event_mode(enum clock_event_mode mode,
struct clock_event_device *ced)
{
struct em_sti_priv *p = ced_to_em_sti(ced);
/* deal with old setting first */
switch (ced->mode) {
case CLOCK_EVT_MODE_ONESHOT:
em_sti_stop(p, USER_CLOCKEVENT);
break;
default:
break;
}
switch (mode) {
case CLOCK_EVT_MODE_ONESHOT:
dev_info(&p->pdev->dev, "used for oneshot clock events\n");
em_sti_start(p, USER_CLOCKEVENT);
clockevents_config(&p->ced, p->rate);
break;
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_UNUSED:
em_sti_stop(p, USER_CLOCKEVENT);
break;
default:
break;
}
}
/**
* clockevents_update_freq - Update frequency and reprogram a clock event device.
* @dev: device to modify
* @freq: new device frequency
*
* Reconfigure and reprogram a clock event device in oneshot
* mode. Must be called on the cpu for which the device delivers per
* cpu timer events with interrupts disabled! Returns 0 on success,
* -ETIME when the event is in the past.
*/
int clockevents_update_freq(struct clock_event_device *dev, u32 freq)
{
clockevents_config(dev, freq);
if (dev->mode != CLOCK_EVT_MODE_ONESHOT)
return 0;
return clockevents_program_event(dev, dev->next_event, false);
}
/**
* clockevents_config_and_register - Configure and register a clock event device
* @dev: device to register
* @freq: The clock frequency
* @min_delta: The minimum clock ticks to program in oneshot mode
* @max_delta: The maximum clock ticks to program in oneshot mode
*
* min/max_delta can be 0 for devices which do not support oneshot mode.
*/
void clockevents_config_and_register(struct clock_event_device *dev,
u32 freq, unsigned long min_delta,
unsigned long max_delta)
{
dev->min_delta_ticks = min_delta;
dev->max_delta_ticks = max_delta;
clockevents_config(dev, freq);
clockevents_register_device(dev);
}
static int em_sti_clock_event_set_oneshot(struct clock_event_device *ced)
{
struct em_sti_priv *p = ced_to_em_sti(ced);
dev_info(&p->pdev->dev, "used for oneshot clock events\n");
em_sti_start(p, USER_CLOCKEVENT);
clockevents_config(&p->ced, p->rate);
return 0;
}
static void sh_tmu_clock_event_start(struct sh_tmu_channel *ch, int periodic)
{
struct clock_event_device *ced = &ch->ced;
sh_tmu_enable(ch);
clockevents_config(ced, ch->rate);
if (periodic) {
ch->periodic = (ch->rate + HZ/2) / HZ;
sh_tmu_set_next(ch, ch->periodic, 1);
}
}
static void sh_tmu_clock_event_start(struct sh_tmu_priv *p, int periodic)
{
struct clock_event_device *ced = &p->ced;
sh_tmu_enable(p);
clockevents_config(ced, p->rate);
if (periodic) {
p->periodic = (p->rate + HZ/2) / HZ;
sh_tmu_set_next(p, p->periodic, 1);
}
}
