static int atmel_abdac_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct atmel_abdac *dac = snd_pcm_substream_chip(substream);
int retval = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
case SNDRV_PCM_TRIGGER_START:
clk_enable(dac->sample_clk);
retval = dw_dma_cyclic_start(dac->dma.chan);
if (retval)
goto out;
dac_writel(dac, CTRL, DAC_BIT(EN));
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
case SNDRV_PCM_TRIGGER_STOP:
dw_dma_cyclic_stop(dac->dma.chan);
dac_writel(dac, DATA, 0);
dac_writel(dac, CTRL, 0);
clk_disable(dac->sample_clk);
break;
default:
retval = -EINVAL;
break;
}
out:
return retval;
}
static int
atmel_ac97c_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
unsigned long camr, ptcr = 0;
int retval = 0;
camr = ac97c_readl(chip, CAMR);
ptcr = readl(chip->regs + ATMEL_PDC_PTSR);
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
case SNDRV_PCM_TRIGGER_START:
if (cpu_is_at32ap7000()) {
retval = dw_dma_cyclic_start(chip->dma.rx_chan);
if (retval)
goto out;
} else {
ptcr = ATMEL_PDC_RXTEN;
}
camr |= AC97C_CMR_CENA | AC97C_CSR_ENDRX;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
case SNDRV_PCM_TRIGGER_STOP:
if (cpu_is_at32ap7000())
dw_dma_cyclic_stop(chip->dma.rx_chan);
else
ptcr |= (ATMEL_PDC_RXTDIS);
if (chip->opened <= 1)
camr &= ~AC97C_CMR_CENA;
break;
default:
retval = -EINVAL;
break;
}
ac97c_writel(chip, CAMR, camr);
if (!cpu_is_at32ap7000())
writel(ptcr, chip->regs + ATMEL_PDC_PTCR);
out:
return retval;
}
