[PATCH v2 09/12] ASoC: wm9705: add private structure

[Robert Jarzmik]

Add a private data structure. This is a preparation for a codec which
would need an another data on top of snd_ac97, which will be the case
when an MFD wm97xx device will probe wm9705.

Signed-off-by: Robert Jarzmik <robert.jarz...@free.fr>
---
 sound/soc/codecs/wm9705.c | 36 ++++++++++++++++++++++++------------
 1 file changed, 24 insertions(+), 12 deletions(-)

diff --git a/sound/soc/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
index f6d5c0f2aea5..08477d040028 100644
--- a/sound/soc/codecs/wm9705.c
+++ b/sound/soc/codecs/wm9705.c
@@ -24,6 +24,10 @@
 #define WM9705_VENDOR_ID 0x574d4c05
 #define WM9705_VENDOR_ID_MASK 0xffffffff
 
+struct wm9705_priv {
+       struct snd_ac97 *ac97;
+};
+
 static const struct reg_default wm9705_reg_defaults[] = {
        { 0x02, 0x8000 },
        { 0x04, 0x8000 },
@@ -292,10 +296,10 @@ static int wm9705_soc_suspend(struct snd_soc_codec *codec)
 
 static int wm9705_soc_resume(struct snd_soc_codec *codec)
 {
-       struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+       struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
        int ret;
 
-       ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
+       ret = snd_ac97_reset(wm9705->ac97, true, WM9705_VENDOR_ID,
                WM9705_VENDOR_ID_MASK);
        if (ret < 0)
                return ret;
@@ -311,38 +315,38 @@ static int wm9705_soc_resume(struct snd_soc_codec *codec)
 
 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 {
-       struct snd_ac97 *ac97;
+       struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
        struct regmap *regmap;
        int ret;
 
-       ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
-               WM9705_VENDOR_ID_MASK);
-       if (IS_ERR(ac97)) {
+       wm9705->ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
+                                             WM9705_VENDOR_ID_MASK);
+       if (IS_ERR(wm9705->ac97)) {
                dev_err(codec->dev, "Failed to register AC97 codec\n");
-               return PTR_ERR(ac97);
+               return PTR_ERR(wm9705->ac97);
        }
 
-       regmap = regmap_init_ac97(ac97, &wm9705_regmap_config);
+       regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
        if (IS_ERR(regmap)) {
                ret = PTR_ERR(regmap);
                goto err_free_ac97_codec;
        }
 
-       snd_soc_codec_set_drvdata(codec, ac97);
+       snd_soc_codec_set_drvdata(codec, wm9705->ac97);
        snd_soc_codec_init_regmap(codec, regmap);
 
        return 0;
 err_free_ac97_codec:
-       snd_soc_free_ac97_codec(ac97);
+       snd_soc_free_ac97_codec(wm9705->ac97);
        return ret;
 }
 
 static int wm9705_soc_remove(struct snd_soc_codec *codec)
 {
-       struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+       struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
 
        snd_soc_codec_exit_regmap(codec);
-       snd_soc_free_ac97_codec(ac97);
+       snd_soc_free_ac97_codec(wm9705->ac97);
        return 0;
 }
 
@@ -364,6 +368,14 @@ static const struct snd_soc_codec_driver 
soc_codec_dev_wm9705 = {
 
 static int wm9705_probe(struct platform_device *pdev)
 {
+       struct wm9705_priv *wm9705;
+
+       wm9705 = devm_kzalloc(&pdev->dev, sizeof(*wm9705), GFP_KERNEL);
+       if (wm9705 == NULL)
+               return -ENOMEM;
+
+       platform_set_drvdata(pdev, wm9705);
+
        return snd_soc_register_codec(&pdev->dev,
                        &soc_codec_dev_wm9705, wm9705_dai, 
ARRAY_SIZE(wm9705_dai));
 }
-- 
2.1.4