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Subject[PATCH v7 6/8] ASoC: wm9705: add private structure
Date
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.jarzmik@free.fr>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
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));
}
--
2.11.0
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