ASoC: ac97: Add support for resetting device before registration

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>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 93df8bf9d54a..42d144a4b7ba 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -526,7 +526,8 @@ int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int reg,
 
 #ifdef CONFIG_SND_SOC_AC97_BUS
 struct snd_ac97 *snd_soc_alloc_ac97_codec(struct snd_soc_codec *codec);
-struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec);
+struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
+        unsigned int id, unsigned int id_mask);
 void snd_soc_free_ac97_codec(struct snd_ac97 *ac97);
 
 int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops);