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| author | Liam Girdwood <lrg@ti.com> | 2012-04-25 12:12:53 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-04-26 17:48:19 +0100 |
| commit | 47c88ffff73d27425be59b34a6d5a91518b5ebed (patch) | |
| tree | 811a0b42807f3d061a2fa682f1e25e4210407fa1 | |
| parent | 618dae11f809aaccd05710aa8cee8c46a9cef1a7 (diff) | |
| download | linux-47c88ffff73d27425be59b34a6d5a91518b5ebed.tar.gz linux-47c88ffff73d27425be59b34a6d5a91518b5ebed.tar.bz2 linux-47c88ffff73d27425be59b34a6d5a91518b5ebed.zip | |
ASoC: dpcm: Add API for DAI link substream and runtime lookup
Some component drivers will need to be able to look up their
DAI link substream and RTD data. Provide a mechanism for this.
Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | include/sound/soc.h | 5 | ||||
| -rw-r--r-- | sound/soc/soc-core.c | 29 |
2 files changed, 34 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index bbe6a5e1ac12..153da5bf2611 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -362,6 +362,11 @@ int snd_soc_platform_write(struct snd_soc_platform *platform, unsigned int reg, unsigned int val); int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); +struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, + const char *dai_link, int stream); +struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, + const char *dai_link); + /* Utility functions to get clock rates from various things */ int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots); int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 201a4d003b9a..4d8869852ad6 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -465,6 +465,35 @@ static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) } #endif +struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, + const char *dai_link, int stream) +{ + int i; + + for (i = 0; i < card->num_links; i++) { + if (card->rtd[i].dai_link->no_pcm && + !strcmp(card->rtd[i].dai_link->name, dai_link)) + return card->rtd[i].pcm->streams[stream].substream; + } + dev_dbg(card->dev, "failed to find dai link %s\n", dai_link); + return NULL; +} +EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream); + +struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, + const char *dai_link) +{ + int i; + + for (i = 0; i < card->num_links; i++) { + if (!strcmp(card->rtd[i].dai_link->name, dai_link)) + return &card->rtd[i]; + } + dev_dbg(card->dev, "failed to find rtd %s\n", dai_link); + return NULL; +} +EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); + #ifdef CONFIG_SND_SOC_AC97_BUS /* unregister ac97 codec */ static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) |