From: Bo Shen <voice.shen@atmel.com>
Date: Fri, 30 Jan 2015 09:38:44 +0000 (+0800)
Subject: ASoC: atmel_ssc_dai: only clean PDC when using PDC
X-Git-Tag: firefly_0821_release~176^2~1862^2~14^2~8^6~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3fd5b30c577bdd51168f38cf4f2d322619015a53;p=firefly-linux-kernel-4.4.55.git

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 76a9754370e8..379ac2a6ab16 100644
--- 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);