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ASoC: core: Add helpers for codec and codec_dai search
Add dedicated helpers for codec and codec_dai search in preparation for DAI-multicodec. It will help reducing the extra indentation that will be introduced by the iteration over multiple codecs. Previous implementation unnecessarily kept searching for a matching codec in the remaining register codecs even if it was already found. Fix that by returning in case of matching. Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com> [fparent@baylibre.com: Adapt to 3.14+] Signed-off-by: Fabien Parent <fparent@baylibre.com> Signed-off-by: Benoit Cousson <bcousson@baylibre.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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@ -854,14 +854,47 @@ EXPORT_SYMBOL_GPL(snd_soc_resume);
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static const struct snd_soc_dai_ops null_dai_ops = {
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};
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static struct snd_soc_codec *soc_find_codec(const struct device_node *codec_of_node,
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const char *codec_name)
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{
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struct snd_soc_codec *codec;
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list_for_each_entry(codec, &codec_list, list) {
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if (codec_of_node) {
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if (codec->dev->of_node != codec_of_node)
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continue;
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} else {
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if (strcmp(codec->name, codec_name))
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continue;
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}
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return codec;
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}
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return NULL;
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}
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static struct snd_soc_dai *soc_find_codec_dai(struct snd_soc_codec *codec,
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const char *codec_dai_name)
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{
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struct snd_soc_dai *codec_dai;
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list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
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if (!strcmp(codec_dai->name, codec_dai_name)) {
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return codec_dai;
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}
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}
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return NULL;
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}
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static int soc_bind_dai_link(struct snd_soc_card *card, int num)
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{
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struct snd_soc_dai_link *dai_link = &card->dai_link[num];
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struct snd_soc_pcm_runtime *rtd = &card->rtd[num];
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struct snd_soc_component *component;
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struct snd_soc_codec *codec;
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struct snd_soc_platform *platform;
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struct snd_soc_dai *codec_dai, *cpu_dai;
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struct snd_soc_dai *cpu_dai;
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const char *platform_name;
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dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num);
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@ -889,42 +922,24 @@ static int soc_bind_dai_link(struct snd_soc_card *card, int num)
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return -EPROBE_DEFER;
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}
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/* Find CODEC from registered CODECs */
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list_for_each_entry(codec, &codec_list, list) {
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if (dai_link->codec_of_node) {
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if (codec->dev->of_node != dai_link->codec_of_node)
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continue;
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} else {
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if (strcmp(codec->name, dai_link->codec_name))
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continue;
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}
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rtd->codec = codec;
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/*
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* CODEC found, so find CODEC DAI from registered DAIs from
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* this CODEC
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*/
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list_for_each_entry(codec_dai, &codec->component.dai_list, list) {
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if (!strcmp(codec_dai->name, dai_link->codec_dai_name)) {
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rtd->codec_dai = codec_dai;
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break;
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}
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}
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if (!rtd->codec_dai) {
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dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
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dai_link->codec_dai_name);
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return -EPROBE_DEFER;
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}
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}
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/* Find CODEC from registered list */
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rtd->codec = soc_find_codec(dai_link->codec_of_node,
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dai_link->codec_name);
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if (!rtd->codec) {
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dev_err(card->dev, "ASoC: CODEC %s not registered\n",
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dai_link->codec_name);
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return -EPROBE_DEFER;
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}
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/* Find CODEC DAI from registered list */
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rtd->codec_dai = soc_find_codec_dai(rtd->codec,
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dai_link->codec_dai_name);
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if (!rtd->codec_dai) {
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dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n",
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dai_link->codec_dai_name);
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return -EPROBE_DEFER;
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}
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/* if there's no platform we match on the empty platform */
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platform_name = dai_link->platform_name;
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if (!platform_name && !dai_link->platform_of_node)
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