[alsa-devel] [PATCH 5/7] ASoC: wm9705: Use core AC'97 reset helper

[Lars-Peter Clausen]

Use the new snd_ac97_reset() helper and the reset functionality provided by
snd_soc_new_ac97_codec() to perform the device reset rather than
open-coding it.

Signed-off-by: Lars-Peter Clausen <lars at metafoo.de>
---
 sound/soc/codecs/wm9705.c | 40 ++++++++--------------------------------
 1 file changed, 8 insertions(+), 32 deletions(-)

diff --git a/sound/soc/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
index 5cc457e..744842c 100644
--- a/sound/soc/codecs/wm9705.c
+++ b/sound/soc/codecs/wm9705.c
@@ -22,6 +22,9 @@
 
 #include "wm9705.h"
 
+#define WM9705_VENDOR_ID 0x574d4c05
+#define WM9705_VENDOR_ID_MASK 0xffffffff
+
 /*
  * WM9705 register cache
  */
@@ -293,21 +296,6 @@ static struct snd_soc_dai_driver wm9705_dai[] = {
 	}
 };
 
-static int wm9705_reset(struct snd_soc_codec *codec)
-{
-	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
-
-	if (soc_ac97_ops->reset) {
-		soc_ac97_ops->reset(ac97);
-		if (ac97_read(codec, 0) == wm9705_reg[0])
-			return 0; /* Success */
-	}
-
-	dev_err(codec->dev, "Failed to reset: AC97 link error\n");
-
-	return -EIO;
-}
-
 #ifdef CONFIG_PM
 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
 {
@@ -324,7 +312,8 @@ static int wm9705_soc_resume(struct snd_soc_codec *codec)
 	int i, ret;
 	u16 *cache = codec->reg_cache;
 
-	ret = wm9705_reset(codec);
+	ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
+		WM9705_VENDOR_ID_MASK);
 	if (ret < 0)
 		return ret;
 
@@ -342,30 +331,17 @@ static int wm9705_soc_resume(struct snd_soc_codec *codec)
 static int wm9705_soc_probe(struct snd_soc_codec *codec)
 {
 	struct snd_ac97 *ac97;
-	int ret = 0;
 
-	ac97 = snd_soc_alloc_ac97_codec(codec);
+	ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
+		WM9705_VENDOR_ID_MASK);
 	if (IS_ERR(ac97)) {
-		ret = PTR_ERR(ac97);
 		dev_err(codec->dev, "Failed to register AC97 codec\n");
-		return ret;
+		return PTR_ERR(ac97);
 	}
 
-	ret = wm9705_reset(codec);
-	if (ret)
-		goto err_put_device;
-
-	ret = device_add(&ac97->dev);
-	if (ret)
-		goto err_put_device;
-
 	snd_soc_codec_set_drvdata(codec, ac97);
 
 	return 0;
-
-err_put_device:
-	put_device(&ac97->dev);
-	return ret;
 }
 
 static int wm9705_soc_remove(struct snd_soc_codec *codec)
-- 
2.1.4