ASoC: simple-card: overwrite cpu_dai->fmt with codec_dai->fmt
The current simple-card driver separates the daimft for cpu_dai and codec_dai.
So we might get different values for them (0x4003 and 0x1003 for example):
asoc-simple-card sound-cs42888.12: cpu : 2024000.esai / 4003 / 132000000
asoc-simple-card sound-cs42888.12: codec : cs42888 / 1003 / 24576000
asoc-simple-card sound-cs42888.12: cs42888 <-> 2024000.esai mapping ok
This is not allowed at all as we need to keep the DAIFMT settings identical
for both the ends of the link.
Thus this patch fixes it by overwriting the cpu_dai->fmt with codec_dai->fmt
since we defined the DAIFMT_MASTER basing on CODEC at the first place while
the other bits are same.
Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index ca7e63e..2ee8ed5 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -151,6 +151,8 @@
struct device *dev)
{
struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
+ struct asoc_simple_dai *codec_dai = &priv->codec_dai;
+ struct asoc_simple_dai *cpu_dai = &priv->cpu_dai;
struct device_node *np;
char *name;
unsigned int daifmt;
@@ -184,7 +186,7 @@
np = of_get_child_by_name(node, "simple-audio-card,cpu");
if (np) {
ret = asoc_simple_card_sub_parse_of(np, daifmt,
- &priv->cpu_dai,
+ cpu_dai,
&dai_link->cpu_of_node,
&dai_link->cpu_dai_name);
of_node_put(np);
@@ -197,7 +199,7 @@
np = of_get_child_by_name(node, "simple-audio-card,codec");
if (np) {
ret = asoc_simple_card_sub_parse_of(np, daifmt,
- &priv->codec_dai,
+ codec_dai,
&dai_link->codec_of_node,
&dai_link->codec_dai_name);
of_node_put(np);
@@ -205,6 +207,12 @@
if (ret < 0)
return ret;
+ /*
+ * overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC
+ * while the other bits should be identical unless buggy SW/HW design.
+ */
+ cpu_dai->fmt = codec_dai->fmt;
+
if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name)
return -EINVAL;
@@ -226,12 +234,12 @@
dev_dbg(dev, "platform : %04x\n", daifmt);
dev_dbg(dev, "cpu : %s / %04x / %d\n",
dai_link->cpu_dai_name,
- priv->cpu_dai.fmt,
- priv->cpu_dai.sysclk);
+ cpu_dai->fmt,
+ cpu_dai->sysclk);
dev_dbg(dev, "codec : %s / %04x / %d\n",
dai_link->codec_dai_name,
- priv->codec_dai.fmt,
- priv->codec_dai.sysclk);
+ codec_dai->fmt,
+ codec_dai->sysclk);
/*
* soc_bind_dai_link() will check cpu name