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authorTakashi Iwai <tiwai@suse.de>2008-08-11 10:04:40 +0200
committerJaroslav Kysela <perex@perex.cz>2008-08-13 11:46:59 +0200
commit963f803fb1bbce87f6049c22c737ae379e1047d3 (patch)
tree9af7cb772e9202e40385520748f0b15b37bc5f3c /sound
parent6e8d90cd3418f18f3913c8ae558eee1ba21e4d6c (diff)
ALSA: hda - Don't reset SPDIF in each status change
The SPDIF output is toggled at each time any SPDIF status bits are changed because of the known problems on some codecs. But, this also results in loosing the sync, and the problem is more obvious on HDMI output over SPDIF. Since the toggle is necessary only for some codecs, we should check whether this workaround is needed and skip if unnecessary. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_codec.c4
-rw-r--r--sound/pci/hda/hda_codec.h5
-rw-r--r--sound/pci/hda/patch_realtek.c2
3 files changed, 9 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 77fbcd4a69b..529bd5f6521 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2590,12 +2590,12 @@ static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid,
unsigned int stream_tag, unsigned int format)
{
/* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
- if (codec->spdif_ctls & AC_DIG1_ENABLE)
+ if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);
snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
/* turn on again (if needed) */
- if (codec->spdif_ctls & AC_DIG1_ENABLE)
+ if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_1,
codec->spdif_ctls & 0xff);
}
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 2f112626f24..aeee5816153 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -654,6 +654,11 @@ struct hda_codec {
struct snd_hwdep *hwdep; /* assigned hwdep device */
+ /* misc flags */
+ unsigned int spdif_status_reset :1; /* needs to toggle SPDIF for each
+ * status change
+ * (e.g. Realtek codecs)
+ */
#ifdef CONFIG_SND_HDA_POWER_SAVE
unsigned int power_on :1; /* current (global) power-state */
unsigned int power_transition :1; /* power-state in transition */
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 7e5422f64ca..8bff732958e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2670,6 +2670,8 @@ static int alc_build_pcms(struct hda_codec *codec)
info->stream[SNDRV_PCM_STREAM_CAPTURE] = *(spec->stream_digital_capture);
info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->dig_in_nid;
}
+ /* FIXME: do we need this for all Realtek codec models? */
+ codec->spdif_status_reset = 1;
}
/* If the use of more than one ADC is requested for the current