ASoC: sta529: Cleanup manual bias level transitions

Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe()
can also be removed as the core will automatically do this after the CODEC
has been probed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/sta529.c

@@ -319,41 +319,10 @@ static struct snd_soc_dai_driver sta529_dai = {
 	.ops	= &sta529_dai_ops,
 };
 
-static int sta529_probe(struct snd_soc_codec *codec)
-{
-	sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
-	return 0;
-}
-
-/* power down chip */
-static int sta529_remove(struct snd_soc_codec *codec)
-{
-	sta529_set_bias_level(codec, SND_SOC_BIAS_OFF);
-
-	return 0;
-}
-
-static int sta529_suspend(struct snd_soc_codec *codec)
-{
-	sta529_set_bias_level(codec, SND_SOC_BIAS_OFF);
-
-	return 0;
-}
-
-static int sta529_resume(struct snd_soc_codec *codec)
-{
-	sta529_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
-	return 0;
-}
-
 static const struct snd_soc_codec_driver sta529_codec_driver = {
-	.probe = sta529_probe,
-	.remove = sta529_remove,
 	.set_bias_level = sta529_set_bias_level,
-	.suspend = sta529_suspend,
-	.resume = sta529_resume,
+	.suspend_bias_off = true,
+
 	.controls = sta529_snd_controls,
 	.num_controls = ARRAY_SIZE(sta529_snd_controls),
 };