ASoC: atmel_ssc_dai: only clean PDC when using PDC

Only using PDC, it needs to clean PDC registers.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index 76a9754..379ac2a 100644 (file)
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -627,15 +627,17 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
                        rcmr, rfmr, tcmr, tfmr);
 
        if (!ssc_p->initialized) {
-               ssc_writel(ssc_p->ssc->regs, PDC_RPR, 0);
-               ssc_writel(ssc_p->ssc->regs, PDC_RCR, 0);
-               ssc_writel(ssc_p->ssc->regs, PDC_RNPR, 0);
-               ssc_writel(ssc_p->ssc->regs, PDC_RNCR, 0);
-
-               ssc_writel(ssc_p->ssc->regs, PDC_TPR, 0);
-               ssc_writel(ssc_p->ssc->regs, PDC_TCR, 0);
-               ssc_writel(ssc_p->ssc->regs, PDC_TNPR, 0);
-               ssc_writel(ssc_p->ssc->regs, PDC_TNCR, 0);
+               if (!ssc_p->ssc->pdata->use_dma) {
+                       ssc_writel(ssc_p->ssc->regs, PDC_RPR, 0);
+                       ssc_writel(ssc_p->ssc->regs, PDC_RCR, 0);
+                       ssc_writel(ssc_p->ssc->regs, PDC_RNPR, 0);
+                       ssc_writel(ssc_p->ssc->regs, PDC_RNCR, 0);
+
+                       ssc_writel(ssc_p->ssc->regs, PDC_TPR, 0);
+                       ssc_writel(ssc_p->ssc->regs, PDC_TCR, 0);
+                       ssc_writel(ssc_p->ssc->regs, PDC_TNPR, 0);
+                       ssc_writel(ssc_p->ssc->regs, PDC_TNCR, 0);
+               }
 
                ret = request_irq(ssc_p->ssc->irq, atmel_ssc_interrupt, 0,
                                ssc_p->name, ssc_p);