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ASoC: wm9705: add ac97 new bus support

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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>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Robert Jarzmik 2017-09-13 21:37:22 +02:00 committed by Mark Brown
parent c6e46e52b7
commit aaafcfed92
2 changed files with 30 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sound/soc/codecs/Kconfig
View File

@ -214,7 +214,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_WM8998 if MFD_WM8998
select SND_SOC_WM9081 if I2C
select SND_SOC_WM9090 if I2C
select SND_SOC_WM9705 if SND_SOC_AC97_BUS
select SND_SOC_WM9705 if (SND_SOC_AC97_BUS || SND_SOC_AC97_BUS_NEW)
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
@ -1128,6 +1128,7 @@ config SND_SOC_WM9090
config SND_SOC_WM9705
tristate
select REGMAP_AC97
select AC97_BUS_COMPAT if AC97_BUS_NEW
config SND_SOC_WM9712
tristate

40
sound/soc/codecs/wm9705.c
View File

@ -11,6 +11,7 @@
#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>
@ -18,6 +19,8 @@
#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>
@ -26,6 +29,7 @@
struct wm9705_priv {
struct snd_ac97 *ac97;
struct wm97xx_platform_data *mfd_pdata;
};
static const struct reg_default wm9705_reg_defaults[] = {
@ -319,17 +323,24 @@ static int wm9705_soc_probe(struct snd_soc_codec *codec)
struct regmap *regmap;
int ret;
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(wm9705->ac97);
}
if (wm9705->mfd_pdata) {
wm9705->ac97 = wm9705->mfd_pdata->ac97;
regmap = wm9705->mfd_pdata->regmap;
} else {
#ifdef CONFIG_SND_SOC_AC97_BUS
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(wm9705->ac97);
}
regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
goto err_free_ac97_codec;
regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
goto err_free_ac97_codec;
}
#endif
}
snd_soc_codec_set_drvdata(codec, wm9705->ac97);
@ -343,10 +354,14 @@ err_free_ac97_codec:
static int wm9705_soc_remove(struct snd_soc_codec *codec)
{
#ifdef CONFIG_SND_SOC_AC97_BUS
struct wm9705_priv *wm9705 = snd_soc_codec_get_drvdata(codec);
snd_soc_codec_exit_regmap(codec);
snd_soc_free_ac97_codec(wm9705->ac97);
if (!wm9705->mfd_pdata) {
snd_soc_codec_exit_regmap(codec);
snd_soc_free_ac97_codec(wm9705->ac97);
}
#endif
return 0;
}
@ -374,6 +389,7 @@ static int wm9705_probe(struct platform_device *pdev)
if (wm9705 == NULL)
return -ENOMEM;
wm9705->mfd_pdata = dev_get_platdata(&pdev->dev);
platform_set_drvdata(pdev, wm9705);
return snd_soc_register_codec(&pdev->dev,