static void
acpi_stop_beep(void *arg)
{
if (acpi_resume_beep != 0)
timer_spkr_release();
}
int
sc_tone(int herz)
{
if (herz) {
if (timer_spkr_acquire())
return (EBUSY);
timer_spkr_setfreq(herz);
} else
timer_spkr_release();
return (0);
}
int
sc_tone(int herz)
{
if (herz) {
if (timer_spkr_acquire())
return EBUSY;
timer_spkr_setfreq(herz);
} else {
timer_spkr_release();
}
return 0;
}
int
sc_tone(int herz)
{
#if defined(HAS_TIMER_SPKR)
if (herz) {
if (timer_spkr_acquire())
return (EBUSY);
timer_spkr_setfreq(herz);
} else
timer_spkr_release();
#endif
return (0);
}
/*
* Emit tone of frequency thz for given number of centisecs
*/
static void
tone(unsigned int thz, unsigned int centisecs)
{
int sps, timo;
if (thz <= 0)
return;
#ifdef DEBUG
(void) printf("tone: thz=%d centisecs=%d\n", thz, centisecs);
#endif /* DEBUG */
/* set timer to generate clicks at given frequency in Hertz */
sps = splclock();
if (timer_spkr_acquire()) {
/* enter list of waiting procs ??? */
splx(sps);
return;
}
splx(sps);
disable_intr();
timer_spkr_setfreq(thz);
enable_intr();
/*
* Set timeout to endtone function, then give up the timeslice.
* This is so other processes can execute while the tone is being
* emitted.
*/
timo = centisecs * hz / 100;
if (timo > 0)
tsleep(&endtone, SPKRPRI | PCATCH, "spkrtn", timo);
sps = splclock();
timer_spkr_release();
splx(sps);
}
