ASoC: core - Add convenience register for platform kcontrol and DAPM

Allow platform probe to register platform kcontrols and DAPM just like
the CODEC probe().
Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/sound/soc.h

@@ -651,6 +651,14 @@ struct snd_soc_platform_driver {
 	int (*pcm_new)(struct snd_soc_pcm_runtime *);
 	void (*pcm_free)(struct snd_pcm *);
 
+	/* 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;
+	int num_dapm_routes;
+
 	/*
 	 * For platform caused delay reporting.
 	 * Optional.

sound/soc/soc-core.c

@@ -998,6 +998,10 @@ static int soc_probe_platform(struct snd_soc_card *card,
 	if (!try_module_get(platform->dev->driver->owner))
 		return -ENODEV;
 
+	if (driver->dapm_widgets)
+		snd_soc_dapm_new_controls(&platform->dapm,
+			driver->dapm_widgets, driver->num_dapm_widgets);
+
 	if (driver->probe) {
 		ret = driver->probe(platform);
 		if (ret < 0) {
@@ -1008,6 +1012,13 @@ static int soc_probe_platform(struct snd_soc_card *card,
 		}
 	}
 
+	if (driver->controls)
+		snd_soc_add_platform_controls(platform, driver->controls,
+				     driver->num_controls);
+	if (driver->dapm_routes)
+		snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes,
+					driver->num_dapm_routes);
+
 	/* mark platform as probed and add to card platform list */
 	platform->probed = 1;
 	list_add(&platform->card_list, &card->platform_dev_list);