ASoC: Add indirection for CODEC private data

One of the features of the multi CODEC work is that it embeds a struct
device in the CODEC to provide diagnostics via a sysfs class rather than
via the device tree, at which point it's much better to use the struct
device private data rather than having two places to store it. Provide
an accessor function to allow this change to be made more easily, and
update all the CODEC drivers are updated.

To ensure use of the accessor the private data structure member is
renamed, meaning that if code developed with older an older core that
still uses private_data is merged it will fail to build.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 3 insertions, 3 deletions

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index c2960d3ec6df..eba3ac013119 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -331,7 +331,7 @@ static const struct snd_soc_dapm_route audio_paths_capless[] = {
 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 {
         struct wm8960_data *pdata = codec->dev->platform_data;
-        struct wm8960_priv *wm8960 = codec->private_data;
+        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
         struct snd_soc_dapm_widget *w;
 
         snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
@@ -534,7 +534,7 @@ static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
                                          enum snd_soc_bias_level level)
 {
-        struct wm8960_priv *wm8960 = codec->private_data;
+        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
         int reg;
 
         switch (level) {
@@ -915,7 +915,7 @@ static int wm8960_register(struct wm8960_priv *wm8960,
         INIT_LIST_HEAD(&codec->dapm_widgets);
         INIT_LIST_HEAD(&codec->dapm_paths);
 
-        codec->private_data = wm8960;
+        snd_soc_codec_set_drvdata(codec, wm8960);
         codec->name = "WM8960";
         codec->owner = THIS_MODULE;
         codec->bias_level = SND_SOC_BIAS_OFF;