summaryrefslogtreecommitdiffstats
path: root/sound
diff options
context:
space:
mode:
authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-07-05 17:24:19 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-07-06 19:06:59 +0100
commitefcc3c61b9b1e4f764e14c48c553e6d477f40512 (patch)
treef74c4890308519ef9e8563e6645d82408947bd36 /sound
parentfabd03842b77b1eb6c9b08c79be86fa38afbe310 (diff)
downloadop-kernel-dev-efcc3c61b9b1e4f764e14c48c553e6d477f40512.zip
op-kernel-dev-efcc3c61b9b1e4f764e14c48c553e6d477f40512.tar.gz
ASoC: dapm: Allow routes to be deleted at runtime
Since we're now relying on DAPM for things like enabling clocks when we reparent the clocks for widgets we need to either use conditional routes (which are expensive) or remove routes at runtime. Add a route removal API to support this use case. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/soc-dapm.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 19fda13..4ba47aa 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2264,6 +2264,59 @@ err:
return ret;
}
+static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
+ const struct snd_soc_dapm_route *route)
+{
+ struct snd_soc_dapm_path *path, *p;
+ const char *sink;
+ const char *source;
+ char prefixed_sink[80];
+ char prefixed_source[80];
+
+ if (route->control) {
+ dev_err(dapm->dev,
+ "Removal of routes with controls not supported\n");
+ return -EINVAL;
+ }
+
+ if (dapm->codec && dapm->codec->name_prefix) {
+ snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
+ dapm->codec->name_prefix, route->sink);
+ sink = prefixed_sink;
+ snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
+ dapm->codec->name_prefix, route->source);
+ source = prefixed_source;
+ } else {
+ sink = route->sink;
+ source = route->source;
+ }
+
+ path = NULL;
+ list_for_each_entry(p, &dapm->card->paths, list) {
+ if (strcmp(p->source->name, source) != 0)
+ continue;
+ if (strcmp(p->sink->name, sink) != 0)
+ continue;
+ path = p;
+ break;
+ }
+
+ if (path) {
+ dapm_mark_dirty(path->source, "Route removed");
+ dapm_mark_dirty(path->sink, "Route removed");
+
+ list_del(&path->list);
+ list_del(&path->list_sink);
+ list_del(&path->list_source);
+ kfree(path);
+ } else {
+ dev_warn(dapm->dev, "Route %s->%s does not exist\n",
+ source, sink);
+ }
+
+ return 0;
+}
+
/**
* snd_soc_dapm_add_routes - Add routes between DAPM widgets
* @dapm: DAPM context
@@ -2298,6 +2351,30 @@ int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
+/**
+ * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
+ * @dapm: DAPM context
+ * @route: audio routes
+ * @num: number of routes
+ *
+ * Removes routes from the DAPM context.
+ */
+int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
+ const struct snd_soc_dapm_route *route, int num)
+{
+ int i, ret = 0;
+
+ mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
+ for (i = 0; i < num; i++) {
+ snd_soc_dapm_del_route(dapm, route);
+ route++;
+ }
+ mutex_unlock(&dapm->card->dapm_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
+
static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
const struct snd_soc_dapm_route *route)
{
OpenPOWER on IntegriCloud