From 48ecb7e879ea172a0b3fd432ad49a870d7be6a59 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 17 Dec 2007 14:32:49 +0100 Subject: [PATCH] [ALSA] hda-codec - Avoid overload of PCM volume on Cx5045 codec The PCM volume of Cx5045 codec has overload that isn't useful but rather harmful. Add a hack to override the amp info to set the max level 0 dB. Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/pci/hda/patch_conexant.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 68f23b823e..a6916da73c 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -826,6 +826,17 @@ static int patch_cxt5045(struct hda_codec *codec) spec->init_verbs[0] = cxt5045_test_init_verbs; #endif } + + /* + * Fix max PCM level to 0 dB + * (originall it has 0x2b steps with 0dB offset 0x14) + */ + snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT, + (0x14 << AC_AMPCAP_OFFSET_SHIFT) | + (0x14 << AC_AMPCAP_NUM_STEPS_SHIFT) | + (0x05 << AC_AMPCAP_STEP_SIZE_SHIFT) | + (1 << AC_AMPCAP_MUTE_SHIFT)); + return 0; } -- 2.39.5