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ASoC: wm8994: Unsuspend the device while reading GPIO statuses 

Otherwise we might get an error if the GPIO is configured as an input
since that makes the register volatile and a suspended device can't be
read from.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-02-06 18:42:14 +00:00
parent 5fab517476
commit 27060b3c64
1 changed files with 5 additions and 0 deletions
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5
sound/soc/codecs/wm8994.c
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@ -3539,6 +3539,9 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
wm8994->fll_locked_irq = false; wm8994->fll_locked_irq = false;
} }
/* Make sure we can read from the GPIOs if they're inputs */
pm_runtime_get_sync(codec->dev);
/* Remember if AIFnLRCLK is configured as a GPIO. This should be /* Remember if AIFnLRCLK is configured as a GPIO. This should be
* configured on init - if a system wants to do this dynamically * configured on init - if a system wants to do this dynamically
* at runtime we can deal with that then. * at runtime we can deal with that then.
@ -3567,6 +3570,8 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
wm8994->lrclk_shared[1] = 0; wm8994->lrclk_shared[1] = 0;
} }
pm_runtime_put(codec->dev);
/* Latch volume updates (right only; we always do left then right). */ /* Latch volume updates (right only; we always do left then right). */
snd_soc_update_bits(codec, WM8994_AIF1_DAC1_LEFT_VOLUME, snd_soc_update_bits(codec, WM8994_AIF1_DAC1_LEFT_VOLUME,
WM8994_AIF1DAC1_VU, WM8994_AIF1DAC1_VU); WM8994_AIF1DAC1_VU, WM8994_AIF1DAC1_VU);