ASoC: core: Add support for back end DAIs

Add support for backend DAIs.

Change-Id: Id067678682ecb480c63af142b85b73a93ebc6c69
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Axel Castaneda Gonzalez <x0055901@ti.com>
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com>

2 files changed, 75 insertions, 0 deletions

diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 1bafe95dcf4..af9a5519e33 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -277,4 +277,53 @@ static inline void *snd_soc_dai_get_drvdata(struct snd_soc_dai *dai)
 	return dev_get_drvdata(dai->dev);
 }
 
+/* Backend DAI PCM ops */
+static inline int snd_soc_dai_startup(struct snd_pcm_substream *substream,
+	struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops->startup)
+		return dai->driver->ops->startup(substream, dai);
+	return 0;
+}
+
+static inline void snd_soc_dai_shutdown(struct snd_pcm_substream *substream,
+	struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops->shutdown)
+		dai->driver->ops->shutdown(substream, dai);
+}
+
+static inline int snd_soc_dai_hw_params(struct snd_pcm_substream * substream,
+		struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops->hw_params)
+		return dai->driver->ops->hw_params(substream, hw_params, dai);
+	return 0;
+}
+
+static inline int snd_soc_dai_hw_free(struct snd_pcm_substream *substream,
+	struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops->hw_free)
+		return dai->driver->ops->hw_free(substream, dai);
+	return 0;
+}
+
+static inline int snd_soc_dai_prepare(struct snd_pcm_substream *substream,
+	struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops->prepare)
+		return dai->driver->ops->prepare(substream, dai);
+	return 0;
+}
+
+static inline int snd_soc_dai_trigger(struct snd_pcm_substream *substream,
+	int cmd, struct snd_soc_dai *dai)
+{
+	if (dai->driver->ops->trigger)
+		return dai->driver->ops->trigger(substream, cmd, dai);
+	return 0;
+}
+
+
 #endif
diff --git a/include/sound/soc.h b/include/sound/soc.h
index d787268e533..a89e611d490 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -278,6 +278,24 @@ int snd_soc_cache_write(struct snd_soc_codec *codec,
 int snd_soc_cache_read(struct snd_soc_codec *codec,
 		       unsigned int reg, unsigned int *value);
 
+/* pcm <-> DAI connect */
+void snd_soc_free_pcms(struct snd_soc_codec *codec);
+int snd_soc_new_pcms(struct snd_soc_codec *codec, int idx, const char *xid);
+
+/* DAI operations - for backend DAIs */
+int snd_soc_pcm_open(struct snd_pcm_substream *substream);
+int snd_soc_pcm_close(struct snd_pcm_substream *substream);
+int snd_soc_pcm_prepare(struct snd_pcm_substream *substream);
+int snd_soc_pcm_hw_params(struct snd_pcm_substream *substream,
+		struct snd_pcm_hw_params *params);
+int snd_soc_pcm_hw_free(struct snd_pcm_substream *substream);
+int snd_soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
+snd_pcm_uframes_t snd_soc_pcm_pointer(struct snd_pcm_substream *substream);
+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);
@@ -584,6 +602,12 @@ struct snd_soc_dai_link {
 
 	/* Symmetry requirements */
 	unsigned int symmetric_rates:1;
+	/* No PCM created for this DAI link */
+	unsigned int no_pcm:1;
+	/* This DAI link can change CODEC and platform at runtime*/
+	unsigned int dynamic:1;
+	/* This DAI link has no codec side driver*/
+	unsigned int no_codec:1;
 
 	/* codec/machine specific init - e.g. add machine controls */
 	int (*init)(struct snd_soc_pcm_runtime *rtd);
@@ -688,6 +712,7 @@ struct snd_soc_pcm_runtime  {
 	struct device dev;
 	struct snd_soc_card *card;
 	struct snd_soc_dai_link *dai_link;
+	struct mutex pcm_mutex;
 
 	unsigned int complete:1;
 	unsigned int dev_registered:1;
@@ -702,6 +727,7 @@ struct snd_soc_pcm_runtime  {
 	struct snd_soc_platform *platform;
 	struct snd_soc_dai *codec_dai;
 	struct snd_soc_dai *cpu_dai;
+	int current_fe;
 
 	struct delayed_work delayed_work;
 };