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Subject[PATCH v7 4/8] ASoC: wm9713: 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>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
Since v6: reworked wm9713_soc_remove()
---
sound/soc/codecs/Kconfig | 3 ++-
sound/soc/codecs/wm9713.c | 39 +++++++++++++++++++++++++++------------
2 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index e49e9da7f1f6..aebf148d7e4d 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -207,7 +207,7 @@ config SND_SOC_ALL_CODECS
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_WM9713 if SND_SOC_AC97_BUS
+ 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
uses them is also built since they are only usable with a machine
@@ -1091,6 +1091,7 @@ config SND_SOC_WM9712
config SND_SOC_WM9713
tristate
select REGMAP_AC97
+ select AC97_BUS_COMPAT if AC97_BUS_NEW

# Amp
config SND_SOC_LM4857
diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c
index 7e4822185feb..df7220656d98 100644
--- a/sound/soc/codecs/wm9713.c
+++ b/sound/soc/codecs/wm9713.c
@@ -17,12 +17,15 @@

#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/mfd/wm97xx.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/regmap.h>
#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/pcm_params.h>
#include <sound/tlv.h>
@@ -38,6 +41,7 @@ struct wm9713_priv {
u32 pll_in; /* PLL input frequency */
unsigned int hp_mixer[2];
struct mutex lock;
+ struct wm97xx_platform_data *mfd_pdata;
};

#define HPL_MIXER 0
@@ -1205,17 +1209,23 @@ static int wm9713_soc_resume(struct snd_soc_codec *codec)
static int wm9713_soc_probe(struct snd_soc_codec *codec)
{
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);
- struct regmap *regmap;
+ struct regmap *regmap = NULL;

- wm9713->ac97 = snd_soc_new_ac97_codec(codec, WM9713_VENDOR_ID,
- WM9713_VENDOR_ID_MASK);
- if (IS_ERR(wm9713->ac97))
- return PTR_ERR(wm9713->ac97);
-
- regmap = regmap_init_ac97(wm9713->ac97, &wm9713_regmap_config);
- if (IS_ERR(regmap)) {
- snd_soc_free_ac97_codec(wm9713->ac97);
- return PTR_ERR(regmap);
+ if (wm9713->mfd_pdata) {
+ wm9713->ac97 = wm9713->mfd_pdata->ac97;
+ regmap = wm9713->mfd_pdata->regmap;
+ } else {
+#ifdef CONFIG_SND_SOC_AC97_BUS
+ wm9713->ac97 = snd_soc_new_ac97_codec(codec, WM9713_VENDOR_ID,
+ WM9713_VENDOR_ID_MASK);
+ if (IS_ERR(wm9713->ac97))
+ return PTR_ERR(wm9713->ac97);
+ regmap = regmap_init_ac97(wm9713->ac97, &wm9713_regmap_config);
+ if (IS_ERR(regmap)) {
+ snd_soc_free_ac97_codec(wm9713->ac97);
+ return PTR_ERR(regmap);
+ }
+#endif
}

snd_soc_codec_init_regmap(codec, regmap);
@@ -1228,10 +1238,14 @@ static int wm9713_soc_probe(struct snd_soc_codec *codec)

static int wm9713_soc_remove(struct snd_soc_codec *codec)
{
+#ifdef CONFIG_SND_SOC_AC97_BUS
struct wm9713_priv *wm9713 = snd_soc_codec_get_drvdata(codec);

- snd_soc_codec_exit_regmap(codec);
- snd_soc_free_ac97_codec(wm9713->ac97);
+ if (!wm9713->mfd_pdata) {
+ snd_soc_codec_exit_regmap(codec);
+ snd_soc_free_ac97_codec(wm9713->ac97);
+ }
+#endif
return 0;
}

@@ -1262,6 +1276,7 @@ static int wm9713_probe(struct platform_device *pdev)

mutex_init(&wm9713->lock);

+ wm9713->mfd_pdata = dev_get_platdata(&pdev->dev);
platform_set_drvdata(pdev, wm9713);

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