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authorTakashi Iwai <tiwai@suse.de>2008-05-23 17:50:27 +0200
committerTakashi Iwai <tiwai@suse.de>2008-05-24 18:23:35 +0200
commitbc9b56238eedda865070dcaed6694d65b517c8d6 (patch)
treeb8bc9876c4f1ad588439f585f2253a1b09d42410 /sound
parentb9e16bc548600124da9d24186364ee8d06040569 (diff)
downloadlinux-bc9b56238eedda865070dcaed6694d65b517c8d6.tar.gz
[ALSA] hda - Fix noise on VT1708 codec
We get quite noisy output on the right channel on VT1708 codec when 24bit samples are used. Suppress the 24bit support until any real fix is found. https://bugzilla.novell.com/show_bug.cgi?id=390473 Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/patch_via.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 52b1d81a26f..e7e43524f8c 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -447,6 +447,23 @@ static struct hda_pcm_stream vt1708_pcm_analog_playback = {
},
};
+static struct hda_pcm_stream vt1708_pcm_analog_s16_playback = {
+ .substreams = 1,
+ .channels_min = 2,
+ .channels_max = 8,
+ .nid = 0x10, /* NID to query formats and rates */
+ /* We got noisy outputs on the right channel on VT1708 when
+ * 24bit samples are used. Until any workaround is found,
+ * disable the 24bit format, so far.
+ */
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .ops = {
+ .open = via_playback_pcm_open,
+ .prepare = via_playback_pcm_prepare,
+ .cleanup = via_playback_pcm_cleanup
+ },
+};
+
static struct hda_pcm_stream vt1708_pcm_analog_capture = {
.substreams = 2,
.channels_min = 2,
@@ -899,6 +916,9 @@ static int patch_vt1708(struct hda_codec *codec)
spec->stream_name_analog = "VT1708 Analog";
spec->stream_analog_playback = &vt1708_pcm_analog_playback;
+ /* disable 32bit format on VT1708 */
+ if (codec->vendor_id == 0x11061708)
+ spec->stream_analog_playback = &vt1708_pcm_analog_s16_playback;
spec->stream_analog_capture = &vt1708_pcm_analog_capture;
spec->stream_name_digital = "VT1708 Digital";