[alsa-devel] [PATCH 6/7] ASoC: wm9712: 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/wm9712.c | 45 ++++++++-------------------------------------
 1 file changed, 8 insertions(+), 37 deletions(-)

diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 1fda104..488a922 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -23,6 +23,9 @@
 #include <sound/tlv.h>
 #include "wm9712.h"
 
+#define WM9712_VENDOR_ID 0x574d4c12
+#define WM9712_VENDOR_ID_MASK 0xffffffff
+
 struct wm9712_priv {
 	struct snd_ac97 *ac97;
 	unsigned int hp_mixer[2];
@@ -613,35 +616,14 @@ static int wm9712_set_bias_level(struct snd_soc_codec *codec,
 	return 0;
 }
 
-static int wm9712_reset(struct snd_soc_codec *codec, int try_warm)
-{
-	struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
-
-	if (try_warm && soc_ac97_ops->warm_reset) {
-		soc_ac97_ops->warm_reset(wm9712->ac97);
-		if (ac97_read(codec, 0) == wm9712_reg[0])
-			return 1;
-	}
-
-	soc_ac97_ops->reset(wm9712->ac97);
-	if (soc_ac97_ops->warm_reset)
-		soc_ac97_ops->warm_reset(wm9712->ac97);
-	if (ac97_read(codec, 0) != wm9712_reg[0])
-		goto err;
-	return 0;
-
-err:
-	dev_err(codec->dev, "Failed to reset: AC97 link error\n");
-	return -EIO;
-}
-
 static int wm9712_soc_resume(struct snd_soc_codec *codec)
 {
 	struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
 	int i, ret;
 	u16 *cache = codec->reg_cache;
 
-	ret = wm9712_reset(codec, 1);
+	ret = snd_ac97_reset(wm9712->ac97, true, WM9712_VENDOR_ID,
+		WM9712_VENDOR_ID_MASK);
 	if (ret < 0)
 		return ret;
 
@@ -663,31 +645,20 @@ static int wm9712_soc_resume(struct snd_soc_codec *codec)
 static int wm9712_soc_probe(struct snd_soc_codec *codec)
 {
 	struct wm9712_priv *wm9712 = snd_soc_codec_get_drvdata(codec);
-	int ret = 0;
+	int ret;
 
-	wm9712->ac97 = snd_soc_alloc_ac97_codec(codec);
+	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;
 	}
 
-	ret = wm9712_reset(codec, 0);
-	if (ret < 0)
-		goto err_put_device;
-
-	ret = device_add(&wm9712->ac97->dev);
-	if (ret)
-		goto err_put_device;
-
 	/* set alc mux to none */
 	ac97_write(codec, AC97_VIDEO, ac97_read(codec, AC97_VIDEO) | 0x3000);
 
 	return 0;
-
-err_put_device:
-	put_device(&wm9712->ac97->dev);
-	return ret;
 }
 
 static int wm9712_soc_remove(struct snd_soc_codec *codec)
-- 
2.1.4