Merge tag 'drm-next-2021-09-10' of git://anongit.freedesktop.org/drm/drm

[linux-2.6-microblaze.git] / include / sound / soc-dapm.h

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index cc3dcb8..c3039e9 100644 (file)
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -16,6 +16,8 @@
 #include <sound/asoc.h>
 
 struct device;
+struct snd_soc_pcm_runtime;
+struct soc_enum;
 
 /* widget has no PM register bit */
 #define SND_SOC_NOPM   -1
@@ -376,6 +378,24 @@ struct snd_soc_dapm_widget_list;
 struct snd_soc_dapm_update;
 enum snd_soc_dapm_direction;
 
+/*
+ * Bias levels
+ *
+ * @ON:      Bias is fully on for audio playback and capture operations.
+ * @PREPARE: Prepare for audio operations. Called before DAPM switching for
+ *           stream start and stop operations.
+ * @STANDBY: Low power standby state when no playback/capture operations are
+ *           in progress. NOTE: The transition time between STANDBY and ON
+ *           should be as fast as possible and no longer than 10ms.
+ * @OFF:     Power Off. No restrictions on transition times.
+ */
+enum snd_soc_bias_level {
+       SND_SOC_BIAS_OFF = 0,
+       SND_SOC_BIAS_STANDBY = 1,
+       SND_SOC_BIAS_PREPARE = 2,
+       SND_SOC_BIAS_ON = 3,
+};
+
 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
                         struct snd_kcontrol *kcontrol, int event);
 int dapm_clock_event(struct snd_soc_dapm_widget *w,