ASoC: wm8711: 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 extra write that sets
the WM8711_ACTIVE register to 0x00 in the suspend handler since this write
is already done when transitioning to SND_SOC_BIAS_OFF.

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, 2 insertions, 25 deletions

diff --git a/sound/soc/codecs/wm8711.c b/sound/soc/codecs/wm8711.c
index 32187e739b4f..121e46d53779 100644
--- a/sound/soc/codecs/wm8711.c
+++ b/sound/soc/codecs/wm8711.c
@@ -350,19 +350,6 @@ static struct snd_soc_dai_driver wm8711_dai = {
         .ops = &wm8711_ops,
 };
 
-static int wm8711_suspend(struct snd_soc_codec *codec)
-{
-        snd_soc_write(codec, WM8711_ACTIVE, 0x0);
-        wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
-        return 0;
-}
-
-static int wm8711_resume(struct snd_soc_codec *codec)
-{
-        wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-        return 0;
-}
-
 static int wm8711_probe(struct snd_soc_codec *codec)
 {
         int ret;
@@ -373,8 +360,6 @@ static int wm8711_probe(struct snd_soc_codec *codec)
                 return ret;
         }
 
-        wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
         /* Latch the update bits */
         snd_soc_update_bits(codec, WM8711_LOUT1V, 0x0100, 0x0100);
         snd_soc_update_bits(codec, WM8711_ROUT1V, 0x0100, 0x0100);
@@ -383,19 +368,11 @@ static int wm8711_probe(struct snd_soc_codec *codec)
 
 }
 
-/* power down chip */
-static int wm8711_remove(struct snd_soc_codec *codec)
-{
-        wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
-        return 0;
-}
-
 static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
         .probe =        wm8711_probe,
-        .remove =       wm8711_remove,
-        .suspend =      wm8711_suspend,
-        .resume =       wm8711_resume,
         .set_bias_level = wm8711_set_bias_level,
+        .suspend_bias_off = true,
+
         .controls = wm8711_snd_controls,
         .num_controls = ARRAY_SIZE(wm8711_snd_controls),
         .dapm_widgets = wm8711_dapm_widgets,