ASoC: Add debug trace for bias level transitions
A standard way of making sure we know when the bias level changes.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 4ca5e56..39a63f9 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -110,6 +110,24 @@
struct snd_soc_codec *codec = socdev->card->codec;
int ret = 0;
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ dev_dbg(socdev->dev, "Setting full bias\n");
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ dev_dbg(socdev->dev, "Setting bias prepare\n");
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ dev_dbg(socdev->dev, "Setting standby bias\n");
+ break;
+ case SND_SOC_BIAS_OFF:
+ dev_dbg(socdev->dev, "Setting bias off\n");
+ break;
+ default:
+ dev_err(socdev->dev, "Setting invalid bias %d\n", level);
+ return -EINVAL;
+ }
+
if (card->set_bias_level)
ret = card->set_bias_level(card, level);
if (ret == 0 && codec->set_bias_level)