ASoC: wm8955: 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. Also remove the regcache_mark_dirty()
from the suspend handler since this is already done by the ASoC core.

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.

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, 32 deletions

diff --git a/sound/soc/codecs/wm8955.c b/sound/soc/codecs/wm8955.c
index 09d91d9dc4ee..1173f7fef5a7 100644
--- a/sound/soc/codecs/wm8955.c
+++ b/sound/soc/codecs/wm8955.c
@@ -866,29 +866,6 @@ static struct snd_soc_dai_driver wm8955_dai = {
         .ops = &wm8955_dai_ops,
 };
 
-#ifdef CONFIG_PM
-static int wm8955_suspend(struct snd_soc_codec *codec)
-{
-        struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
-
-        wm8955_set_bias_level(codec, SND_SOC_BIAS_OFF);
-
-        regcache_mark_dirty(wm8955->regmap);
-
-        return 0;
-}
-
-static int wm8955_resume(struct snd_soc_codec *codec)
-{
-        wm8955_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
-        return 0;
-}
-#else
-#define wm8955_suspend NULL
-#define wm8955_resume NULL
-#endif
-
 static int wm8955_probe(struct snd_soc_codec *codec)
 {
         struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
@@ -964,18 +941,10 @@ err_enable:
         return ret;
 }
 
-static int wm8955_remove(struct snd_soc_codec *codec)
-{
-        wm8955_set_bias_level(codec, SND_SOC_BIAS_OFF);
-        return 0;
-}
-
 static struct snd_soc_codec_driver soc_codec_dev_wm8955 = {
         .probe =        wm8955_probe,
-        .remove =       wm8955_remove,
-        .suspend =      wm8955_suspend,
-        .resume =       wm8955_resume,
         .set_bias_level = wm8955_set_bias_level,
+        .suspend_bias_off = true,
 
         .controls =     wm8955_snd_controls,
         .num_controls = ARRAY_SIZE(wm8955_snd_controls),