ASoC: wm8940: 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.

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, 2 insertions, 20 deletions

diff --git a/sound/soc/codecs/wm8940.c b/sound/soc/codecs/wm8940.c
index 52011043e54c..e4142b4309eb 100644
--- a/sound/soc/codecs/wm8940.c
+++ b/sound/soc/codecs/wm8940.c
@@ -695,17 +695,6 @@ static struct snd_soc_dai_driver wm8940_dai = {
         .symmetric_rates = 1,
 };
 
-static int wm8940_suspend(struct snd_soc_codec *codec)
-{
-        return wm8940_set_bias_level(codec, SND_SOC_BIAS_OFF);
-}
-
-static int wm8940_resume(struct snd_soc_codec *codec)
-{
-        wm8940_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-        return 0;
-}
-
 static int wm8940_probe(struct snd_soc_codec *codec)
 {
         struct wm8940_setup_data *pdata = codec->dev->platform_data;
@@ -736,18 +725,11 @@ static int wm8940_probe(struct snd_soc_codec *codec)
         return ret;
 }
 
-static int wm8940_remove(struct snd_soc_codec *codec)
-{
-        wm8940_set_bias_level(codec, SND_SOC_BIAS_OFF);
-        return 0;
-}
-
 static struct snd_soc_codec_driver soc_codec_dev_wm8940 = {
         .probe =        wm8940_probe,
-        .remove =       wm8940_remove,
-        .suspend =      wm8940_suspend,
-        .resume =       wm8940_resume,
         .set_bias_level = wm8940_set_bias_level,
+        .suspend_bias_off = true,
+
         .controls =     wm8940_snd_controls,
         .num_controls = ARRAY_SIZE(wm8940_snd_controls),
         .dapm_widgets = wm8940_dapm_widgets,