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ASoC: wm9712: add ac97 new bus support 

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>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Robert Jarzmik 2017-09-13 21:37:20 +02:00 committed by Mark Brown
parent 9bd400cada
commit 2ed1a8e0ce
2 changed files with 31 additions and 14 deletions
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3
sound/soc/codecs/Kconfig
View File

@ -215,7 +215,7 @@ 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
@ -1132,6 +1132,7 @@ 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

42
sound/soc/codecs/wm9712.c
View File

@ -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;
}
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;
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 @@ err_free_ac97_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,