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ASoC: ac97: Add support for resetting device before registration

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AC97 devices need to be initially reset before they can be used. Currently
each driver does this on its own.

Add support for resetting the device to core in snd_soc_new_ac97_codec().
If the caller supplies a device ID and device ID mask the function will
reset the device and verify that it has the correct ID, if it does not a
error is returned.

This will allow to remove custom code with similar functionality from
individual drivers.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lars-Peter Clausen
2015-07-21 21:53:01 +02:00
committed by Mark Brown
parent 5f1d980ee9
commit 7361fbeaea
4 changed files with 29 additions and 8 deletions
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2
sound/soc/codecs/stac9766.c
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@@ -332,7 +332,7 @@ static int stac9766_codec_probe(struct snd_soc_codec *codec)
struct snd_ac97 *ac97;
int ret = 0;
ac97 = snd_soc_new_ac97_codec(codec);
ac97 = snd_soc_new_ac97_codec(codec, 0, 0);
if (IS_ERR(ac97))
return PTR_ERR(ac97);