From 765ae7c8dda7d06d7ce74b35beb4c7ec06b78643 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Thu, 15 Jan 2015 08:09:13 +0000
Subject: [PATCH] ASoC: rsnd: ignore DIRQ when DMA transfer
SSI interrupt handler of R-Car sound driver will be called
when DIRQ (= Data read/write timing for PIO) or
UIRQ / OIRQ (= under/over run error).
DIRQ "interrupt" doesn't occur when DMA transfer, but then,
DIRQ "status bit" might occur. we need to ignore this DIRQ
operation when DMA. Otherwise, driver will push/pop as PIO.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
sound/soc/sh/rcar/ssi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index d26634bde908..4b646124ab8a 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -384,13 +384,14 @@ static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
struct rsnd_mod *mod = &ssi->mod;
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ int is_dma = rsnd_ssi_is_dma_mode(mod);
u32 status = rsnd_mod_read(mod, SSISR);
if (!io)
return IRQ_NONE;
/* PIO only */
- if (status & DIRQ) {
+ if (!is_dma && (status & DIRQ)) {
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
u32 *buf = (u32 *)(runtime->dma_area +
rsnd_dai_pointer_offset(io, 0));
--
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