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, 5 insertions, 5 deletions

diff --git a/sound/soc/codecs/wm8523.c b/sound/soc/codecs/wm8523.c
index d3a61d7ea0c5..2cdffb0b2a80 100644
--- a/sound/soc/codecs/wm8523.c
+++ b/sound/soc/codecs/wm8523.c
@@ -137,7 +137,7 @@ static int wm8523_startup(struct snd_pcm_substream *substream,
                           struct snd_soc_dai *dai)
 {
         struct snd_soc_codec *codec = dai->codec;
-        struct wm8523_priv *wm8523 = codec->private_data;
+        struct wm8523_priv *wm8523 = snd_soc_codec_get_drvdata(codec);
 
         /* The set of sample rates that can be supported depends on the
          * MCLK supplied to the CODEC - enforce this.
@@ -163,7 +163,7 @@ static int wm8523_hw_params(struct snd_pcm_substream *substream,
         struct snd_soc_pcm_runtime *rtd = substream->private_data;
         struct snd_soc_device *socdev = rtd->socdev;
         struct snd_soc_codec *codec = socdev->card->codec;
-        struct wm8523_priv *wm8523 = codec->private_data;
+        struct wm8523_priv *wm8523 = snd_soc_codec_get_drvdata(codec);
         int i;
         u16 aifctrl1 = snd_soc_read(codec, WM8523_AIF_CTRL1);
         u16 aifctrl2 = snd_soc_read(codec, WM8523_AIF_CTRL2);
@@ -210,7 +210,7 @@ static int wm8523_set_dai_sysclk(struct snd_soc_dai *codec_dai,
                 int clk_id, unsigned int freq, int dir)
 {
         struct snd_soc_codec *codec = codec_dai->codec;
-        struct wm8523_priv *wm8523 = codec->private_data;
+        struct wm8523_priv *wm8523 = snd_soc_codec_get_drvdata(codec);
         unsigned int val;
         int i;
 
@@ -317,7 +317,7 @@ static int wm8523_set_dai_fmt(struct snd_soc_dai *codec_dai,
 static int wm8523_set_bias_level(struct snd_soc_codec *codec,
                                  enum snd_soc_bias_level level)
 {
-        struct wm8523_priv *wm8523 = codec->private_data;
+        struct wm8523_priv *wm8523 = snd_soc_codec_get_drvdata(codec);
         int ret, i;
 
         switch (level) {
@@ -488,7 +488,7 @@ static int wm8523_register(struct wm8523_priv *wm8523,
         INIT_LIST_HEAD(&codec->dapm_widgets);
         INIT_LIST_HEAD(&codec->dapm_paths);
 
-        codec->private_data = wm8523;
+        snd_soc_codec_set_drvdata(codec, wm8523);
         codec->name = "WM8523";
         codec->owner = THIS_MODULE;
         codec->bias_level = SND_SOC_BIAS_OFF;