[alsa-devel] [PATCH 15/15] ALSA: hda - Disable FLOAT format support

[Takashi Iwai]

It turned out that the FLOAT format on CS4206 results in simple
noises, which implies that this is no right format as is.
Since CS4206 is the only codec supporting the float, let's disable it
until we find the correct format.

Reported-and-tested-by: Adrian Knoth <adi at drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/pci/hda/hda_codec.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 7a621f5..c556fe1 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -3842,11 +3842,13 @@ int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
 					bps = 20;
 			}
 		}
+#if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
 		if (streams & AC_SUPFMT_FLOAT32) {
 			formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
 			if (!bps)
 				bps = 32;
 		}
+#endif
 		if (streams == AC_SUPFMT_AC3) {
 			/* should be exclusive */
 			/* temporary hack: we have still no proper support
-- 
1.7.9.2