Merge tag 'asoc-hdmi-codec-improvements-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into asoc-5.14

Improvements to the hdmi-codec driver and ALSA infrastructure around it
to support the HDMI Channel Mapping and IEC958 controls

2 files changed, 19 insertions, 1 deletions

diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index 4b3a1d374b90..4fc733c8c570 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -65,13 +65,23 @@ struct hdmi_codec_ops {
 
 	/*
 	 * Configures HDMI-encoder for audio stream.
-	 * Mandatory
+	 * Having either prepare or hw_params is mandatory.
 	 */
 	int (*hw_params)(struct device *dev, void *data,
 			 struct hdmi_codec_daifmt *fmt,
 			 struct hdmi_codec_params *hparms);
 
 	/*
+	 * Configures HDMI-encoder for audio stream. Can be called
+	 * multiple times for each setup.
+	 *
+	 * Having either prepare or hw_params is mandatory.
+	 */
+	int (*prepare)(struct device *dev, void *data,
+		       struct hdmi_codec_daifmt *fmt,
+		       struct hdmi_codec_params *hparms);
+
+	/*
 	 * Shuts down the audio stream.
 	 * Mandatory
 	 */
diff --git a/include/sound/pcm_iec958.h b/include/sound/pcm_iec958.h
index 0939aa45e2fe..64e84441cde1 100644
--- a/include/sound/pcm_iec958.h
+++ b/include/sound/pcm_iec958.h
@@ -4,6 +4,14 @@
 
 #include <linux/types.h>
 
+int snd_pcm_create_iec958_consumer_default(u8 *cs, size_t len);
+
+int snd_pcm_fill_iec958_consumer(struct snd_pcm_runtime *runtime, u8 *cs,
+				 size_t len);
+
+int snd_pcm_fill_iec958_consumer_hw_params(struct snd_pcm_hw_params *params,
+					   u8 *cs, size_t len);
+
 int snd_pcm_create_iec958_consumer(struct snd_pcm_runtime *runtime, u8 *cs,
 	size_t len);