ALSA: asoc: core - refactored DAPM pin control API.

Refactored snd_soc_dapm_set_endpoint() to snd_soc_dapm_enable_pin() and
snd_soc_dapm_disable_pin().

Renamed snd_soc_dapm_sync_endpoints() to snd_soc_dapm_sync().
Renamed snd_soc_dapm_get_endpoint_status() to
snd_soc_dapm_get_pin_status().

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 51 insertions, 30 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 91cbbefefb0a..94296b5dc58f 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -880,8 +880,25 @@ static void dapm_free_widgets(struct snd_soc_codec *codec)
         }
 }
 
+static int snd_soc_dapm_set_pin(struct snd_soc_codec *codec,
+        char *pin, int status)
+{
+        struct snd_soc_dapm_widget *w;
+
+        list_for_each_entry(w, &codec->dapm_widgets, list) {
+                if (!strcmp(w->name, pin)) {
+                        dbg("dapm: %s: pin %s\n", codec->name, pin);
+                        w->connected = status;
+                        return 0;
+                }
+        }
+
+        dbg("dapm: %s: configuring unknown pin %s\n", codec->name, pin);
+        return -EINVAL;
+}
+
 /**
- * snd_soc_dapm_sync_endpoints - scan and power dapm paths
+ * snd_soc_dapm_sync - scan and power dapm paths
  * @codec: audio codec
  *
  * Walks all dapm audio paths and powers widgets according to their
@@ -889,11 +906,11 @@ static void dapm_free_widgets(struct snd_soc_codec *codec)
  *
  * Returns 0 for success.
  */
-int snd_soc_dapm_sync_endpoints(struct snd_soc_codec *codec)
+int snd_soc_dapm_sync(struct snd_soc_codec *codec)
 {
         return dapm_power_widgets(codec, SND_SOC_DAPM_STREAM_NOP);
 }
-EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_endpoints);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
 
 static int snd_soc_dapm_add_route(struct snd_soc_codec *codec,
         const char *sink, const char *control, const char *source)
@@ -1441,53 +1458,57 @@ int snd_soc_dapm_set_bias_level(struct snd_soc_device *socdev,
 }
 
 /**
- * snd_soc_dapm_set_endpoint - set audio endpoint status
- * @codec: audio codec
- * @endpoint: audio signal endpoint (or start point)
- * @status: point status
- *
- * Set audio endpoint status - connected or disconnected.
+ * snd_soc_dapm_enable_pin - enable pin.
+ * @snd_soc_codec: SoC codec
+ * @pin: pin name
  *
- * Returns 0 for success else error.
+ * Enables input/output pin and it's parents or children widgets iff there is
+ * a valid audio route and active audio stream.
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
  */
-int snd_soc_dapm_set_endpoint(struct snd_soc_codec *codec,
-        char *endpoint, int status)
+int snd_soc_dapm_enable_pin(struct snd_soc_codec *codec, char *pin)
 {
-        struct snd_soc_dapm_widget *w;
-
-        list_for_each_entry(w, &codec->dapm_widgets, list) {
-                if (!strcmp(w->name, endpoint)) {
-                        w->connected = status;
-                        return 0;
-                }
-        }
+        return snd_soc_dapm_set_pin(codec, pin, 1);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
 
-        return -ENODEV;
+/**
+ * snd_soc_dapm_disable_pin - disable pin.
+ * @codec: SoC codec
+ * @pin: pin name
+ *
+ * Disables input/output pin and it's parents or children widgets.
+ * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
+ * do any widget power switching.
+ */
+int snd_soc_dapm_disable_pin(struct snd_soc_codec *codec, char *pin)
+{
+        return snd_soc_dapm_set_pin(codec, pin, 0);
 }
-EXPORT_SYMBOL_GPL(snd_soc_dapm_set_endpoint);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
 
 /**
- * snd_soc_dapm_get_endpoint_status - get audio endpoint status
+ * snd_soc_dapm_get_pin_status - get audio pin status
  * @codec: audio codec
- * @endpoint: audio signal endpoint (or start point)
+ * @pin: audio signal pin endpoint (or start point)
  *
- * Get audio endpoint status - connected or disconnected.
+ * Get audio pin status - connected or disconnected.
  *
- * Returns status
+ * Returns 1 for connected otherwise 0.
  */
-int snd_soc_dapm_get_endpoint_status(struct snd_soc_codec *codec,
-        char *endpoint)
+int snd_soc_dapm_get_pin_status(struct snd_soc_codec *codec, char *pin)
 {
         struct snd_soc_dapm_widget *w;
 
         list_for_each_entry(w, &codec->dapm_widgets, list) {
-                if (!strcmp(w->name, endpoint))
+                if (!strcmp(w->name, pin))
                         return w->connected;
         }
 
         return 0;
 }
-EXPORT_SYMBOL_GPL(snd_soc_dapm_get_endpoint_status);
+EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
 
 /**
  * snd_soc_dapm_free - free dapm resources