static int timer_event(int dev, unsigned char *event)
{
unsigned char cmd = event[1];
unsigned long parm = *(int *) &event[4];
switch (cmd)
{
case TMR_WAIT_REL:
parm += prev_event_time;
case TMR_WAIT_ABS:
if (parm > 0)
{
long time;
if (parm <= curr_ticks) /* It's the time */
return TIMER_NOT_ARMED;
time = parm;
next_event_time = prev_event_time = time;
return TIMER_ARMED;
}
break;
case TMR_START:
tmr_reset();
tmr_running = 1;
reprogram_timer();
break;
case TMR_STOP:
tmr_running = 0;
break;
case TMR_CONTINUE:
tmr_running = 1;
reprogram_timer();
break;
case TMR_TEMPO:
if (parm)
{
if (parm < 8)
parm = 8;
if (parm > 250)
parm = 250;
tmr_offs = tmr_ctr;
ticks_offs += tmr2ticks(tmr_ctr);
tmr_ctr = 0;
curr_tempo = parm;
reprogram_timer();
}
break;
case TMR_ECHO:
seq_copy_to_input(event, 8);
break;
default:;
}
return TIMER_NOT_ARMED;
}
static int timer_open(int dev, int mode)
{
if (opened)
return -EBUSY;
tmr_reset();
curr_tempo = 60;
curr_timebase = 100;
opened = 1;
reprogram_timer();
return 0;
}
static int timer_set_next_event(unsigned long delta,
struct clock_event_device *dev)
{
unsigned long flags;
local_irq_save(flags);
reprogram_timer(group2_base, 0, delta);
local_irq_restore(flags);
return 0;
}
static int percpu_timer_set_next_event(unsigned long delta,
struct clock_event_device *dev)
{
unsigned long flags;
u32 cpuid = hard_smp_processor_id();
u32 timern = cpuid & 0x1;
void __iomem *base = irq_map[cpuid].base;
/* if cpu is offline, should not set next event on local timer */
BUG_ON(!cpu_online(cpuid));
spin_lock_irqsave(&soc_tmr_lock[cpuid>>1], flags);
reprogram_timer(base, timern, delta);
spin_unlock_irqrestore(&soc_tmr_lock[cpuid>>1], flags);
return 0;
}
/* same as sound_timer.c:timer_ioctl!? */
static int def_tmr_ioctl(int dev, unsigned int cmd, void __user *arg)
{
int __user *p = arg;
int val;
switch (cmd) {
case SNDCTL_TMR_SOURCE:
return __put_user(TMR_INTERNAL, p);
case SNDCTL_TMR_START:
tmr_reset();
tmr_running = 1;
return 0;
case SNDCTL_TMR_STOP:
tmr_running = 0;
return 0;
case SNDCTL_TMR_CONTINUE:
tmr_running = 1;
return 0;
case SNDCTL_TMR_TIMEBASE:
if (__get_user(val, p))
return -EFAULT;
if (val) {
if (val < 1)
val = 1;
if (val > 1000)
val = 1000;
curr_timebase = val;
}
return __put_user(curr_timebase, p);
case SNDCTL_TMR_TEMPO:
if (__get_user(val, p))
return -EFAULT;
if (val) {
if (val < 8)
val = 8;
if (val > 250)
val = 250;
tmr_offs = tmr_ctr;
ticks_offs += tmr2ticks(tmr_ctr);
tmr_ctr = 0;
curr_tempo = val;
reprogram_timer();
}
return __put_user(curr_tempo, p);
case SNDCTL_SEQ_CTRLRATE:
if (__get_user(val, p))
return -EFAULT;
if (val != 0) /* Can't change */
return -EINVAL;
val = ((curr_tempo * curr_timebase) + 30) / 60;
return __put_user(val, p);
case SNDCTL_SEQ_GETTIME:
return __put_user(curr_ticks, p);
case SNDCTL_TMR_METRONOME:
/* NOP */
break;
default:;
}
return -EINVAL;
}
static int
timer_ioctl (int dev,
unsigned int cmd, caddr_t arg)
{
switch (cmd)
{
case SNDCTL_TMR_SOURCE:
return snd_ioctl_return ((int *) arg, TMR_INTERNAL);
break;
case SNDCTL_TMR_START:
tmr_reset ();
tmr_running = 1;
return 0;
break;
case SNDCTL_TMR_STOP:
tmr_running = 0;
return 0;
break;
case SNDCTL_TMR_CONTINUE:
tmr_running = 1;
return 0;
break;
case SNDCTL_TMR_TIMEBASE:
{
int val = get_fs_long ((long *) arg);
if (val)
{
if (val < 1)
val = 1;
if (val > 1000)
val = 1000;
curr_timebase = val;
}
return snd_ioctl_return ((int *) arg, curr_timebase);
}
break;
case SNDCTL_TMR_TEMPO:
{
int val = get_fs_long ((long *) arg);
if (val)
{
if (val < 8)
val = 8;
if (val > 250)
val = 250;
tmr_offs = tmr_ctr;
ticks_offs += tmr2ticks (tmr_ctr);
tmr_ctr = 0;
curr_tempo = val;
reprogram_timer ();
}
return snd_ioctl_return ((int *) arg, curr_tempo);
}
break;
case SNDCTL_SEQ_CTRLRATE:
if (get_fs_long ((long *) arg) != 0) /* Can't change */
return -(EINVAL);
return snd_ioctl_return ((int *) arg, ((curr_tempo * curr_timebase) + 30) / 60);
break;
case SNDCTL_TMR_METRONOME:
/* NOP */
break;
default:;
}
return -(EINVAL);
}
