ASoC: wm8974: 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>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 1 insertions, 24 deletions

diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
index 682e9eda1019..ff0e4646b934 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -568,18 +568,6 @@ static struct snd_soc_dai_driver wm8974_dai = {
         .symmetric_rates = 1,
 };
 
-static int wm8974_suspend(struct snd_soc_codec *codec)
-{
-        wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
-        return 0;
-}
-
-static int wm8974_resume(struct snd_soc_codec *codec)
-{
-        wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-        return 0;
-}
-
 static const struct regmap_config wm8974_regmap = {
         .reg_bits = 7,
         .val_bits = 9,
@@ -599,24 +587,13 @@ static int wm8974_probe(struct snd_soc_codec *codec)
                 return ret;
         }
 
-        wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
-        return ret;
-}
-
-/* power down chip */
-static int wm8974_remove(struct snd_soc_codec *codec)
-{
-        wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
         return 0;
 }
 
 static struct snd_soc_codec_driver soc_codec_dev_wm8974 = {
         .probe =        wm8974_probe,
-        .remove =       wm8974_remove,
-        .suspend =      wm8974_suspend,
-        .resume =       wm8974_resume,
         .set_bias_level = wm8974_set_bias_level,
+        .suspend_bias_off = true,
 
         .controls = wm8974_snd_controls,
         .num_controls = ARRAY_SIZE(wm8974_snd_controls),