ASoC: dt: Allow Aux Codecs to be specified using DT

This patch adds support for specifying auxiliary codecs and
codec configuration via device tree phandles.

This change adds new fields to snd_soc_aux_dev and snd_soc_codec_conf
and adds support for the changes to SoC core methods.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 12 insertions, 1 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 0b83168d8ff4..d371ae1c7279 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -931,7 +931,12 @@ struct snd_soc_dai_link {
 };
 
 struct snd_soc_codec_conf {
+        /*
+         * specify device either by device name, or by
+         * DT/OF node, but not both.
+         */
         const char *dev_name;
+        const struct device_node *of_node;
 
         /*
          * optional map of kcontrol, widget and path name prefixes that are
@@ -942,7 +947,13 @@ struct snd_soc_codec_conf {
 
 struct snd_soc_aux_dev {
         const char *name;               /* Codec name */
-        const char *codec_name;         /* for multi-codec */
+
+        /*
+         * specify multi-codec either by device name, or by
+         * DT/OF node, but not both.
+         */
+        const char *codec_name;
+        const struct device_node *codec_of_node;
 
         /* codec/machine specific init - e.g. add machine controls */
         int (*init)(struct snd_soc_dapm_context *dapm);