ASoC: ac97: Push snd_ac97 pointer to the driver level

Now that the ASoC core no longer needs a handle to the AC'97 device that is
associated with a CODEC we can remove it from the snd_soc_codec struct and
push it into the individual driver state structs like we do for other
communication buses. Doing so creates a clean separation between the AC'97
bus support and the ASoC core.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 18 insertions, 9 deletions

diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index c6cb101..93bd47d 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -135,6 +135,7 @@ static const struct snd_soc_dapm_route ad1980_dapm_routes[] = {
 static unsigned int ac97_read(struct snd_soc_codec *codec,
 	unsigned int reg)
 {
+	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 	u16 *cache = codec->reg_cache;
 
 	switch (reg) {
@@ -144,7 +145,7 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
 	case AC97_EXTENDED_STATUS:
 	case AC97_VENDOR_ID1:
 	case AC97_VENDOR_ID2:
-		return soc_ac97_ops->read(codec->ac97, reg);
+		return soc_ac97_ops->read(ac97, reg);
 	default:
 		reg = reg >> 1;
 
@@ -158,9 +159,10 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 	unsigned int val)
 {
+	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 	u16 *cache = codec->reg_cache;
 
-	soc_ac97_ops->write(codec->ac97, reg, val);
+	soc_ac97_ops->write(ac97, reg, val);
 	reg = reg >> 1;
 	if (reg < ARRAY_SIZE(ad1980_reg))
 		cache[reg] = val;
@@ -186,16 +188,17 @@ static struct snd_soc_dai_driver ad1980_dai = {
 
 static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 {
+	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 	unsigned int retry_cnt = 0;
 
 	do {
 		if (try_warm && soc_ac97_ops->warm_reset) {
-			soc_ac97_ops->warm_reset(codec->ac97);
+			soc_ac97_ops->warm_reset(ac97);
 			if (ac97_read(codec, AC97_RESET) == 0x0090)
 				return 1;
 		}
 
-		soc_ac97_ops->reset(codec->ac97);
+		soc_ac97_ops->reset(ac97);
 		/*
 		 * Set bit 16slot in register 74h, then every slot will has only
 		 * 16 bits. This command is sent out in 20bit mode, in which
@@ -215,16 +218,20 @@ static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
 
 static int ad1980_soc_probe(struct snd_soc_codec *codec)
 {
+	struct snd_ac97 *ac97;
 	int ret;
 	u16 vendor_id2;
 	u16 ext_status;
 
-	ret = snd_soc_new_ac97_codec(codec);
-	if (ret < 0) {
-		dev_err(codec->dev, "Failed to register AC97 codec\n");
+	ac97 = snd_soc_new_ac97_codec(codec);
+	if (IS_ERR(ac97)) {
+		ret = PTR_ERR(ac97);
+		dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret);
 		return ret;
 	}
 
+	snd_soc_codec_set_drvdata(codec, ac97);
+
 	ret = ad1980_reset(codec, 0);
 	if (ret < 0)
 		goto reset_err;
@@ -261,13 +268,15 @@ static int ad1980_soc_probe(struct snd_soc_codec *codec)
 	return 0;
 
 reset_err:
-	snd_soc_free_ac97_codec(codec);
+	snd_soc_free_ac97_codec(ac97);
 	return ret;
 }
 
 static int ad1980_soc_remove(struct snd_soc_codec *codec)
 {
-	snd_soc_free_ac97_codec(codec);
+	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+
+	snd_soc_free_ac97_codec(ac97);
 	return 0;
 }