ALSA: hda: Fix 0 dB for Lenovo models using Conexant CX20549 (Venice)

Reference: http://mailman.alsa-project.org/pipermail/alsa-devel/2010-May/027525.html

As reported on the mailing list, we also need to cap to the 0 dB offset
for Lenovo models, else the sound will be distorted.

Reported-and-Tested-by: Tim Starling <tstarling@wikimedia.org>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index d8213e2..feabb44 100644 (file)
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -1197,9 +1197,10 @@ static int patch_cxt5045(struct hda_codec *codec)
        case 0x103c:
        case 0x1631:
        case 0x1734:
-               /* HP, Packard Bell, & Fujitsu-Siemens laptops have really bad
-                * sound over 0dB on NID 0x17. Fix max PCM level to 0 dB
-                * (originally it has 0x2b steps with 0dB offset 0x14)
+       case 0x17aa:
+               /* HP, Packard Bell, Fujitsu-Siemens & Lenovo laptops have
+                * really bad sound over 0dB on NID 0x17. Fix max PCM level to
+                * 0 dB (originally it has 0x2b steps with 0dB offset 0x14)
                 */
                snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT,
                                          (0x14 << AC_AMPCAP_OFFSET_SHIFT) |