ASoC: Add data based control initialisation for CODECs and cards

Allow CODEC and card drivers to point to an array of controls from their
driver structure rather than explicitly calling snd_soc_add_controls().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

2 files changed, 17 insertions, 1 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 2720a9f3780b..435cb83c7f48 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -577,7 +577,9 @@ struct snd_soc_codec_driver {
                         pm_message_t state);
         int (*resume)(struct snd_soc_codec *);
 
-        /* Default DAPM setup, added after probe() is run */
+        /* Default control and setup, added after probe() is run */
+        const struct snd_kcontrol_new *controls;
+        int num_controls;
         const struct snd_soc_dapm_widget *dapm_widgets;
         int num_dapm_widgets;
         const struct snd_soc_dapm_route *dapm_routes;
@@ -747,6 +749,9 @@ struct snd_soc_card {
         struct snd_soc_pcm_runtime *rtd_aux;
         int num_aux_rtd;
 
+        const struct snd_kcontrol_new *controls;
+        int num_controls;
+
         /*
          * Card-specific routes and widgets.
          */
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index f31afe9d4edd..f75f13926049 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1493,6 +1493,9 @@ static int soc_probe_codec(struct snd_soc_card *card,
                 }
         }
 
+        if (driver->controls)
+                snd_soc_add_controls(codec, driver->controls,
+                                     driver->num_controls);
         if (driver->dapm_widgets)
                 snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets,
                                           driver->num_dapm_widgets);
@@ -1890,6 +1893,14 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
                 }
         }
 
+        /* We should have a non-codec control add function but we don't */
+        if (card->controls)
+                snd_soc_add_controls(list_first_entry(&card->codec_dev_list,
+                                                      struct snd_soc_codec,
+                                                      card_list),
+                                     card->controls,
+                                     card->num_controls);
+
         if (card->dapm_widgets)
                 snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets,
                                           card->num_dapm_widgets);