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ASoC: simple-card: Remove support for setting differing DAI formats 

Having to set different formats on the CPU side and the CODEC side of a DAI
link is usually indication that something is terribly wrong and in most
cases is a result of a broken driver that implements a set_fmt() callback
which does not follow the specification. In the past this feature has been
used to work around broken drivers, rather than fixing them. We don't really
want to encourage this, so remove support for setting different formats on
both ends of the link.

Along the way switch to static DAI format setup by setting the the dai_fmt
field of the snd_soc_dai_link rather than calling snd_soc_dai_fmt().

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2015-03-24 01:07:08 +00:00 committed by Mark Brown
parent 947a37cd38
commit 1efb53a220
2 changed files with 8 additions and 23 deletions
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1
include/sound/simple_card.h
View File

@ -16,7 +16,6 @@
struct asoc_simple_dai {
const char *name;
unsigned int fmt;
unsigned int sysclk;
int slots;
int slot_width;

30
sound/soc/generic/simple-card.c
View File

@ -125,14 +125,6 @@ static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
{
int ret;
if (set->fmt) {
ret = snd_soc_dai_set_fmt(dai, set->fmt);
if (ret && ret != -ENOTSUPP) {
dev_err(dai->dev, "simple-card: set_fmt error\n");
goto err;
}
}
if (set->sysclk) {
ret = snd_soc_dai_set_sysclk(dai, 0, set->sysclk, 0);
if (ret && ret != -ENOTSUPP) {
@ -269,12 +261,10 @@ static int asoc_simple_card_parse_daifmt(struct device_node *node,
struct device_node *codec,
char *prefix, int idx)
{
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
struct device *dev = simple_priv_to_dev(priv);
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
struct asoc_simple_dai *cpu_dai = &dai_props->cpu_dai;
struct asoc_simple_dai *codec_dai = &dai_props->codec_dai;
unsigned int daifmt;
daifmt = snd_soc_of_parse_daifmt(node, prefix,
@ -289,8 +279,7 @@ static int asoc_simple_card_parse_daifmt(struct device_node *node,
*/
dev_dbg(dev, "Revert to legacy daifmt parsing\n");
cpu_dai->fmt = codec_dai->fmt =
snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
} else {
if (codec == bitclkmaster)
@ -299,11 +288,10 @@ static int asoc_simple_card_parse_daifmt(struct device_node *node,
else
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
cpu_dai->fmt = daifmt;
codec_dai->fmt = daifmt;
}
dai_link->dai_fmt = daifmt;
of_node_put(bitclkmaster);
of_node_put(framemaster);
@ -379,13 +367,12 @@ static int asoc_simple_card_dai_link_of(struct device_node *node,
dai_link->init = asoc_simple_card_dai_init;
dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
dev_dbg(dev, "\tcpu : %s / %04x / %d\n",
dev_dbg(dev, "\tformat : %04x\n", dai_link->dai_fmt);
dev_dbg(dev, "\tcpu : %s / %d\n",
dai_link->cpu_dai_name,
dai_props->cpu_dai.fmt,
dai_props->cpu_dai.sysclk);
dev_dbg(dev, "\tcodec : %s / %04x / %d\n",
dev_dbg(dev, "\tcodec : %s / %d\n",
dai_link->codec_dai_name,
dai_props->codec_dai.fmt,
dai_props->codec_dai.sysclk);
/*
@ -572,14 +559,13 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
dai_link->codec_name = cinfo->codec;
dai_link->cpu_dai_name = cinfo->cpu_dai.name;
dai_link->codec_dai_name = cinfo->codec_dai.name;
dai_link->dai_fmt = cinfo->daifmt;
dai_link->init = asoc_simple_card_dai_init;
memcpy(&priv->dai_props->cpu_dai, &cinfo->cpu_dai,
sizeof(priv->dai_props->cpu_dai));
memcpy(&priv->dai_props->codec_dai, &cinfo->codec_dai,
sizeof(priv->dai_props->codec_dai));
priv->dai_props->cpu_dai.fmt |= cinfo->daifmt;
priv->dai_props->codec_dai.fmt |= cinfo->daifmt;
}
snd_soc_card_set_drvdata(&priv->snd_card, priv);