static int
via8233chan_trigger(kobj_t obj, void* data, int go)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
snd_mtxlock(via->lock);
switch(go) {
case PCMTRIG_START:
via_buildsgdt(ch);
via8233chan_mute(via, ch, 0);
via_wr(via, ch->rbase + VIA_RP_TABLE_PTR, ch->sgd_addr, 4);
via_wr(via, ch->rbase + VIA_RP_CONTROL,
SGD_CONTROL_START | SGD_CONTROL_AUTOSTART |
SGD_CONTROL_I_EOL | SGD_CONTROL_I_FLAG, 1);
break;
case PCMTRIG_STOP:
case PCMTRIG_ABORT:
via_wr(via, ch->rbase + VIA_RP_CONTROL, SGD_CONTROL_STOP, 1);
via8233chan_mute(via, ch, 1);
via8233chan_reset(via, ch);
break;
}
snd_mtxunlock(via->lock);
return 0;
}
static int
viachan_trigger(kobj_t obj, void *data, int go)
{
struct via_chinfo *ch = data;
struct via_info *via = ch->parent;
struct via_dma_op *ado;
bus_addr_t sgd_addr = ch->sgd_addr;
if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD)
return 0;
ado = ch->sgd_table;
DEB(kprintf("ado located at va=%p pa=%x\n", ado, sgd_addr));
snd_mtxlock(via->lock);
if (go == PCMTRIG_START) {
via_buildsgdt(ch);
via_wr(via, ch->base, sgd_addr, 4);
via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1);
} else
via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1);
snd_mtxunlock(via->lock);
DEB(kprintf("viachan_trigger: go=%d\n", go));
return 0;
}
