ASoC: topology: Add callback for DAPM route load/unload

Add a callback fro clients for notification about DAPM route loading and
unloading.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h
index e1f265e..401ef2c 100644 (file)
--- a/include/sound/soc-topology.h
+++ b/include/sound/soc-topology.h
@@ -32,6 +32,7 @@ struct snd_kcontrol_new;
 struct snd_soc_dai_link;
 struct snd_soc_dai_driver;
 struct snd_soc_dai;
+struct snd_soc_dapm_route;
 
 /* object scan be loaded and unloaded in groups with identfying indexes */
 #define SND_SOC_TPLG_INDEX_ALL 0       /* ID that matches all FW objects */
@@ -116,6 +117,12 @@ struct snd_soc_tplg_ops {
        int (*control_unload)(struct snd_soc_component *,
                struct snd_soc_dobj *);
 
+       /* DAPM graph route element loading and unloading */
+       int (*dapm_route_load)(struct snd_soc_component *, int index,
+               struct snd_soc_dapm_route *route);
+       int (*dapm_route_unload)(struct snd_soc_component *,
+               struct snd_soc_dobj *);
+
        /* external widget init - used for any driver specific init */
        int (*widget_load)(struct snd_soc_component *, int index,
                struct snd_soc_dapm_widget *,

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 028bcaa..b9370ae 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1161,6 +1161,17 @@ static int soc_tplg_kcontrol_elems_load(struct soc_tplg *tplg,
        return 0;
 }
 
+/* optionally pass new dynamic kcontrol to component driver. */
+static int soc_tplg_add_route(struct soc_tplg *tplg,
+       struct snd_soc_dapm_route *route)
+{
+       if (tplg->comp && tplg->ops && tplg->ops->dapm_route_load)
+               return tplg->ops->dapm_route_load(tplg->comp, tplg->index,
+                       route);
+
+       return 0;
+}
+
 static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
        struct snd_soc_tplg_hdr *hdr)
 {
@@ -1209,6 +1220,8 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
                else
                        route.control = elem->control;
 
+               soc_tplg_add_route(tplg, &route);
+
                /* add route, but keep going if some fail */
                snd_soc_dapm_add_routes(dapm, &route, 1);
        }