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ASoC: Consolidate CPU and CODEC DAI lookup 

The lookup of CPU and CODEC DAIs is fairly similar and can easily be
consolidated into a single helper function.

There are two main differences in the current implementation of the CPU and
CODEC DAI lookup:
 1) CPU DAIs can be looked up by the DAI name alone and do not necessarily
   require a component name/of_node.
 2) The CODEC DAI search only considers DAIs from CODEC components.

For 1) the new helper function will allow to lookup DAIs without providing a
component name or of_node, but since snd_soc_register_card() already rejects
CODEC DAI link components without neither a of_node or a name we'll never get
into the situation where we try to lookup a CODEC DAI without a name/of_node.
For 2) the new helper function just always considers all components.
Componentization is now at a point where it is possible to register a CODEC as a
snd_soc_component rather than a snd_soc_codec, by considering DAIs from all
components it is possible to use such a CODEC in a DAI link.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Lars-Peter Clausen 2014-08-19 15:51:27 +02:00 committed by Mark Brown
parent e60cd14f0b
commit 14621c7e5e
1 changed files with 19 additions and 53 deletions
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72
sound/soc/soc-core.c
View File

@ -877,35 +877,23 @@ static struct snd_soc_component *soc_find_component(
return NULL;
}
static struct snd_soc_codec *soc_find_codec(
const struct device_node *codec_of_node,
const char *codec_name)
static struct snd_soc_dai *snd_soc_find_dai(
const struct snd_soc_dai_link_component *dlc)
{
struct snd_soc_codec *codec;
struct snd_soc_component *component;
struct snd_soc_dai *dai;
list_for_each_entry(codec, &codec_list, list) {
if (codec_of_node) {
if (codec->dev->of_node != codec_of_node)
/* Find CPU DAI from registered DAIs*/
list_for_each_entry(component, &component_list, list) {
if (dlc->of_node && component->dev->of_node != dlc->of_node)
continue;
if (dlc->name && strcmp(dev_name(component->dev), dlc->name))
continue;
list_for_each_entry(dai, &component->dai_list, list) {
if (dlc->dai_name && strcmp(dai->name, dlc->dai_name))
continue;
} else {
if (strcmp(codec->component.name, codec_name))
continue;
}
return codec;
}
return NULL;
}
static struct snd_soc_dai *soc_find_codec_dai(struct snd_soc_codec *codec,
const char *codec_dai_name)
{
struct snd_soc_dai *codec_dai;
list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
if (!strcmp(codec_dai->name, codec_dai_name)) {
return codec_dai;
return dai;
}
}
@ -916,33 +904,19 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num)
{
struct snd_soc_dai_link *dai_link = &card->dai_link[num];
struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
struct snd_soc_component *component;
struct snd_soc_dai_link_component *codecs = dai_link->codecs;
struct snd_soc_dai_link_component cpu_dai_component;
struct snd_soc_dai **codec_dais = rtd->codec_dais;
struct snd_soc_platform *platform;
struct snd_soc_dai *cpu_dai;
const char *platform_name;
int i;
dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
/* Find CPU DAI from registered DAIs*/
list_for_each_entry(component, &component_list, list) {
if (dai_link->cpu_of_node &&
component->dev->of_node != dai_link->cpu_of_node)
continue;
if (dai_link->cpu_name &&
strcmp(dev_name(component->dev), dai_link->cpu_name))
continue;
list_for_each_entry(cpu_dai, &component->dai_list, list) {
if (dai_link->cpu_dai_name &&
strcmp(cpu_dai->name, dai_link->cpu_dai_name))
continue;
rtd->cpu_dai = cpu_dai;
}
}
cpu_dai_component.name = dai_link->cpu_name;
cpu_dai_component.of_node = dai_link->cpu_of_node;
cpu_dai_component.dai_name = dai_link->cpu_dai_name;
rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component);
if (!rtd->cpu_dai) {
dev_err(card->dev, "ASoC: CPU DAI %s not registered\n",
dai_link->cpu_dai_name);
@ -953,15 +927,7 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num)
/* Find CODEC from registered CODECs */
for (i = 0; i < rtd->num_codecs; i++) {
struct snd_soc_codec *codec;
codec = soc_find_codec(codecs[i].of_node, codecs[i].name);
if (!codec) {
dev_err(card->dev, "ASoC: CODEC %s not registered\n",
codecs[i].name);
return -EPROBE_DEFER;
}
codec_dais[i] = soc_find_codec_dai(codec, codecs[i].dai_name);
codec_dais[i] = snd_soc_find_dai(&codecs[i]);
if (!codec_dais[i]) {
dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
codecs[i].dai_name);