ASoC: stac9766: Use core reset helper
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@metafoo.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/stac9766.c b/sound/soc/codecs/stac9766.c
index c602830..0945c51 100644
--- a/sound/soc/codecs/stac9766.c
+++ b/sound/soc/codecs/stac9766.c
@@ -28,6 +28,9 @@
#include "stac9766.h"
+#define STAC9766_VENDOR_ID 0x83847666
+#define STAC9766_VENDOR_ID_MASK 0xffffffff
+
/*
* STAC9766 register cache
*/
@@ -239,45 +242,12 @@
return 0;
}
-static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
-{
- struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
-
- if (try_warm && soc_ac97_ops->warm_reset) {
- soc_ac97_ops->warm_reset(ac97);
- if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
- return 1;
- }
-
- soc_ac97_ops->reset(ac97);
- if (soc_ac97_ops->warm_reset)
- soc_ac97_ops->warm_reset(ac97);
- if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
- return -EIO;
- return 0;
-}
-
static int stac9766_codec_resume(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
- u16 id, reset;
- reset = 0;
- /* give the codec an AC97 warm reset to start the link */
-reset:
- if (reset > 5) {
- dev_err(codec->dev, "Failed to resume\n");
- return -EIO;
- }
- ac97->bus->ops->warm_reset(ac97);
- id = soc_ac97_ops->read(ac97, AC97_VENDOR_ID2);
- if (id != 0x4c13) {
- stac9766_reset(codec, 0);
- reset++;
- goto reset;
- }
-
- return 0;
+ return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID,
+ STAC9766_VENDOR_ID_MASK);
}
static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
@@ -330,28 +300,15 @@
static int stac9766_codec_probe(struct snd_soc_codec *codec)
{
struct snd_ac97 *ac97;
- int ret = 0;
- ac97 = snd_soc_new_ac97_codec(codec, 0, 0);
+ ac97 = snd_soc_new_ac97_codec(codec, STAC9766_VENDOR_ID,
+ STAC9766_VENDOR_ID_MASK);
if (IS_ERR(ac97))
return PTR_ERR(ac97);
snd_soc_codec_set_drvdata(codec, ac97);
- /* do a cold reset for the controller and then try
- * a warm reset followed by an optional cold reset for codec */
- stac9766_reset(codec, 0);
- ret = stac9766_reset(codec, 1);
- if (ret < 0) {
- dev_err(codec->dev, "Failed to reset: AC97 link error\n");
- goto codec_err;
- }
-
return 0;
-
-codec_err:
- snd_soc_free_ac97_codec(ac97);
- return ret;
}
static int stac9766_codec_remove(struct snd_soc_codec *codec)