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Subject[PATCH v7 5/8] ASoC: wm9712: add ac97 new bus support
Date
Add support for the new ac97 bus model, where devices are automatically
discovered on AC-Links.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
Since v4:
- added #ifdef spotted by Charles
Since v6: reworked wm9712_soc_remove()
---
sound/soc/codecs/Kconfig | 3 ++-
sound/soc/codecs/wm9712.c | 44 ++++++++++++++++++++++++++++++--------------
2 files changed, 32 insertions(+), 15 deletions(-)

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index aebf148d7e4d..f17af3592785 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -206,7 +206,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_WM9081 if I2C
select SND_SOC_WM9090 if I2C
select SND_SOC_WM9705 if SND_SOC_AC97_BUS
- select SND_SOC_WM9712 if SND_SOC_AC97_BUS
+ select SND_SOC_WM9712 if (SND_SOC_AC97_BUS || SND_SOC_AC97_BUS_NEW)
select SND_SOC_WM9713 if (SND_SOC_AC97_BUS || SND_SOC_AC97_BUS_NEW)
help
Normally ASoC codec drivers are only built if a machine driver which
@@ -1087,6 +1087,7 @@ config SND_SOC_WM9705
config SND_SOC_WM9712
tristate
select REGMAP_AC97
+ select AC97_BUS_COMPAT if AC97_BUS_NEW

config SND_SOC_WM9713
tristate
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 1a3e1797994a..1e228bf9f1ae 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -12,6 +12,7 @@

#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/mfd/wm97xx.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
@@ -19,6 +20,8 @@
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
+#include <sound/ac97/codec.h>
+#include <sound/ac97/compat.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>
@@ -30,6 +33,7 @@ struct wm9712_priv {
struct snd_ac97 *ac97;
unsigned int hp_mixer[2];
struct mutex lock;
+ struct wm97xx_platform_data *mfd_pdata;
};

static const struct reg_default wm9712_reg_defaults[] = {
@@ -636,18 +640,25 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec)
struct regmap *regmap;
int ret;

- wm9712->ac97 = snd_soc_new_ac97_codec(codec, WM9712_VENDOR_ID,
- WM9712_VENDOR_ID_MASK);
- if (IS_ERR(wm9712->ac97)) {
- ret = PTR_ERR(wm9712->ac97);
- dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret);
- return ret;
- }
-
- regmap = regmap_init_ac97(wm9712->ac97, &wm9712_regmap_config);
- if (IS_ERR(regmap)) {
- ret = PTR_ERR(regmap);
- goto err_free_ac97_codec;
+ if (wm9712->mfd_pdata) {
+ wm9712->ac97 = wm9712->mfd_pdata->ac97;
+ regmap = wm9712->mfd_pdata->regmap;
+ } else {
+#ifdef CONFIG_SND_SOC_AC97_BUS
+ wm9712->ac97 = snd_soc_new_ac97_codec(codec, WM9712_VENDOR_ID,
+ WM9712_VENDOR_ID_MASK);
+ if (IS_ERR(wm9712->ac97)) {
+ ret = PTR_ERR(wm9712->ac97);
+ dev_err(codec->dev,
+ "Failed to register AC97 codec: %d\n", ret);
+ return ret;
+ }
+
+ regmap = regmap_init_ac97(wm9712->ac97, &wm9712_regmap_config);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ goto err_free_ac97_codec;
+#endif
}

snd_soc_codec_init_regmap(codec, regmap);
@@ -663,10 +674,14 @@ static int wm9712_soc_probe(struct snd_soc_codec *codec)

static int wm9712_soc_remove(struct snd_soc_codec *codec)
{
+#ifdef CONFIG_SND_SOC_AC97_BUS
struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);

- snd_soc_codec_exit_regmap(codec);
- snd_soc_free_ac97_codec(wm9712->ac97);
+ if (!wm9712->mfd_pdata) {
+ snd_soc_codec_exit_regmap(codec);
+ snd_soc_free_ac97_codec(wm9712->ac97);
+ }
+#endif
return 0;
}

@@ -697,6 +712,7 @@ static int wm9712_probe(struct platform_device *pdev)

mutex_init(&wm9712->lock);

+ wm9712->mfd_pdata = dev_get_platdata(&pdev->dev);
platform_set_drvdata(pdev, wm9712);

return snd_soc_register_codec(&pdev->dev,
--
2.11.0
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