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authorJean-Francois Moine <moinejf@free.fr>2014-03-20 13:52:41 +0400
committerMark Brown <broonie@linaro.org>2014-03-25 22:09:20 +0400
commitcf7dc23cbfd5c4c5ab2136f19522d9b3b41acf99 (patch)
tree39df7ae9eed7c8d9305e75f9a478332f2bb8392c /sound
parent46c39cae292fd691f32e573e6c2c854e36614c93 (diff)
downloadlinux-cf7dc23cbfd5c4c5ab2136f19522d9b3b41acf99.tar.xz
ASoC: simple-card: dynamically allocate the DAI link and properties
The DAI link array and the properties (fmt, sysclk slots) are hard-coded for a single CPU / CODEC link. This patch dynamically allocates the DAI link array and the properties with the aim of supporting many DAI links. Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/generic/simple-card.c42
1 files changed, 27 insertions, 15 deletions
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 2ee8ed56bcf1..1e865c5d377f 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -20,9 +20,11 @@
struct simple_card_data {
struct snd_soc_card snd_card;
- struct asoc_simple_dai cpu_dai;
- struct asoc_simple_dai codec_dai;
- struct snd_soc_dai_link snd_link;
+ struct simple_dai_props {
+ struct asoc_simple_dai cpu_dai;
+ struct asoc_simple_dai codec_dai;
+ } *dai_props;
+ struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
};
static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
@@ -70,11 +72,11 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
struct snd_soc_dai *cpu = rtd->cpu_dai;
int ret;
- ret = __asoc_simple_card_dai_init(codec, &priv->codec_dai);
+ ret = __asoc_simple_card_dai_init(codec, &priv->dai_props->codec_dai);
if (ret < 0)
return ret;
- ret = __asoc_simple_card_dai_init(cpu, &priv->cpu_dai);
+ ret = __asoc_simple_card_dai_init(cpu, &priv->dai_props->cpu_dai);
if (ret < 0)
return ret;
@@ -151,8 +153,8 @@ static int asoc_simple_card_parse_of(struct device_node *node,
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 asoc_simple_dai *codec_dai = &priv->dai_props->codec_dai;
+ struct asoc_simple_dai *cpu_dai = &priv->dai_props->cpu_dai;
struct device_node *np;
char *name;
unsigned int daifmt;
@@ -284,7 +286,10 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
int ret;
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ /* allocate the private data and the DAI link array */
+ priv = devm_kzalloc(dev,
+ sizeof(*priv) + sizeof(*dai_link),
+ GFP_KERNEL);
if (!priv)
return -ENOMEM;
@@ -293,10 +298,17 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
*/
priv->snd_card.owner = THIS_MODULE;
priv->snd_card.dev = dev;
- dai_link = &priv->snd_link;
+ dai_link = priv->dai_link;
priv->snd_card.dai_link = dai_link;
priv->snd_card.num_links = 1;
+ /* get room for the other properties */
+ priv->dai_props = devm_kzalloc(dev,
+ sizeof(*priv->dai_props),
+ GFP_KERNEL);
+ if (!priv->dai_props)
+ return -ENOMEM;
+
if (np && of_device_is_available(np)) {
ret = asoc_simple_card_parse_of(np, priv, dev);
@@ -330,13 +342,13 @@ 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;
- memcpy(&priv->cpu_dai, &cinfo->cpu_dai,
- sizeof(priv->cpu_dai));
- memcpy(&priv->codec_dai, &cinfo->codec_dai,
- sizeof(priv->codec_dai));
+ 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->cpu_dai.fmt |= cinfo->daifmt;
- priv->codec_dai.fmt |= cinfo->daifmt;
+ priv->dai_props->cpu_dai.fmt |= cinfo->daifmt;
+ priv->dai_props->codec_dai.fmt |= cinfo->daifmt;
}
/*