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ALSA: hda - Add comments for the previous fix for conexant codecs

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Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-03-12 16:45:01 +01:00
parent 5d75bc5578
commit 3b7523fc82
1 changed files with 6 additions and 0 deletions
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6
sound/pci/hda/patch_conexant.c
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@ -1196,6 +1196,10 @@ static int cxt5047_hp_master_sw_put(struct snd_kcontrol *kcontrol,
* the headphone jack
*/
bits = (!spec->hp_present && spec->cur_eapd) ? 0 : HDA_AMP_MUTE;
/* NOTE: Conexat codec needs the index for *OUTPUT* amp of
* pin widgets unlike other codecs. In this case, we need to
* set index 0x01 for the volume from the mixer amp 0x19.
*/
snd_hda_codec_amp_stereo(codec, 0x1d, HDA_OUTPUT, 0x01,
HDA_AMP_MUTE, bits);
bits = spec->cur_eapd ? 0 : HDA_AMP_MUTE;
@ -1214,6 +1218,7 @@ static void cxt5047_hp_automute(struct hda_codec *codec)
AC_VERB_GET_PIN_SENSE, 0) & 0x80000000;
bits = (spec->hp_present || !spec->cur_eapd) ? HDA_AMP_MUTE : 0;
/* See the note in cxt5047_hp_master_sw_put */
snd_hda_codec_amp_stereo(codec, 0x1d, HDA_OUTPUT, 0x01,
HDA_AMP_MUTE, bits);
}
@ -1276,6 +1281,7 @@ static struct snd_kcontrol_new cxt5047_base_mixers[] = {
};
static struct snd_kcontrol_new cxt5047_hp_spk_mixers[] = {
/* See the note in cxt5047_hp_master_sw_put */
HDA_CODEC_VOLUME("Speaker Playback Volume", 0x1d, 0x01, HDA_OUTPUT),
HDA_CODEC_VOLUME("Headphone Playback Volume", 0x13, 0x00, HDA_OUTPUT),
{}