ASoC: AC97 doesn't use regmap by default

Since commit 38cbf9598feba97de9f9b43efa9153fd7c1a2ec9
("ASoC: core: Try to use regmap if the driver doesn't set up any I/O")
any ASoC codec which doesn't set codec::control_data is assumed
to use regmap.  That doesn't work with AC97 so this workaround
sets the codec::control_data member to a random value to restore
proper behaviour.

Tested with WM9712.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

4 files changed, 4 insertions, 0 deletions

diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index 8c39dddd7d00..11b1b714b8b5 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -186,6 +186,7 @@ static int ad1980_soc_probe(struct snd_soc_codec *codec)
 
         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 
+        codec->control_data = codec;    /* we don't use regmap! */
         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
         if (ret < 0) {
                 printk(KERN_ERR "ad1980: failed to register AC97 codec\n");
diff --git a/sound/soc/codecs/stac9766.c b/sound/soc/codecs/stac9766.c
index 982e437799a8..33c0f3d39c87 100644
--- a/sound/soc/codecs/stac9766.c
+++ b/sound/soc/codecs/stac9766.c
@@ -340,6 +340,7 @@ static int stac9766_codec_probe(struct snd_soc_codec *codec)
 
         printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION);
 
+        codec->control_data = codec;    /* we don't use regmap! */
         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
         if (ret < 0)
                 goto codec_err;
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 099e6ec32125..f16fb361a4eb 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -619,6 +619,7 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec)
 {
         int ret = 0;
 
+        codec->control_data = codec;    /* we don't use regmap! */
         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
         if (ret < 0) {
                 printk(KERN_ERR "wm9712: failed to register AC97 codec\n");
diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c
index 3eb19fb71d17..d0b8a3287a85 100644
--- a/sound/soc/codecs/wm9713.c
+++ b/sound/soc/codecs/wm9713.c
@@ -1196,6 +1196,7 @@ static int wm9713_soc_probe(struct snd_soc_codec *codec)
         if (wm9713 == NULL)
                 return -ENOMEM;
         snd_soc_codec_set_drvdata(codec, wm9713);
+        codec->control_data = wm9713;   /* we don't use regmap! */
 
         ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
         if (ret < 0)