ASoC: Add function to register component controls

We have now everything in place to actual let a component register controls. Add
a function which allows to do so.

Also update snd_soc_add_codec_controls() and snd_soc_platform_controls() to use
this new function internally. And while we are at it also change the
num_controls parameter of those two functions from int to unsigned int.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

2 files changed, 29 insertions, 12 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 5ee6ddde4831..50ff6f3459aa 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -507,10 +507,12 @@ struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
                                   const char *prefix);
 struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
                                                const char *name);
+int snd_soc_add_component_controls(struct snd_soc_component *component,
+        const struct snd_kcontrol_new *controls, unsigned int num_controls);
 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
-        const struct snd_kcontrol_new *controls, int num_controls);
+        const struct snd_kcontrol_new *controls, unsigned int num_controls);
 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
-        const struct snd_kcontrol_new *controls, int num_controls);
+        const struct snd_kcontrol_new *controls, unsigned int num_controls);
 int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
         const struct snd_kcontrol_new *controls, int num_controls);
 int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index a0ae3d2263d1..28caa63ae526 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2394,6 +2394,25 @@ struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
 EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
 
 /**
+ * snd_soc_add_component_controls - Add an array of controls to a component.
+ *
+ * @component: Component to add controls to
+ * @controls: Array of controls to add
+ * @num_controls: Number of elements in the array
+ *
+ * Return: 0 for success, else error.
+ */
+int snd_soc_add_component_controls(struct snd_soc_component *component,
+        const struct snd_kcontrol_new *controls, unsigned int num_controls)
+{
+        struct snd_card *card = component->card->snd_card;
+
+        return snd_soc_add_controls(card, component->dev, controls,
+                        num_controls, component->name_prefix, component);
+}
+EXPORT_SYMBOL_GPL(snd_soc_add_component_controls);
+
+/**
  * snd_soc_add_codec_controls - add an array of controls to a codec.
  * Convenience function to add a list of controls. Many codecs were
  * duplicating this code.
@@ -2405,12 +2424,10 @@ EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
  * Return 0 for success, else error.
  */
 int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
-        const struct snd_kcontrol_new *controls, int num_controls)
+        const struct snd_kcontrol_new *controls, unsigned int num_controls)
 {
-        struct snd_card *card = codec->component.card->snd_card;
-
-        return snd_soc_add_controls(card, codec->dev, controls, num_controls,
-                        codec->component.name_prefix, &codec->component);
+        return snd_soc_add_component_controls(&codec->component, controls,
+                num_controls);
 }
 EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
 
@@ -2425,12 +2442,10 @@ EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls);
  * Return 0 for success, else error.
  */
 int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
-        const struct snd_kcontrol_new *controls, int num_controls)
+        const struct snd_kcontrol_new *controls, unsigned int num_controls)
 {
-        struct snd_card *card = platform->component.card->snd_card;
-
-        return snd_soc_add_controls(card, platform->dev, controls, num_controls,
-                        NULL, &platform->component);
+        return snd_soc_add_component_controls(&platform->component, controls,
+                num_controls);
 }
 EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls);