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[ALSA] hda: fix Mic in as output 

Some laptop has an internal analog microphone that is 'fixed'.
This patch prevents creating a 'Mic In as Output' switch for
ports that can't be outputs.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Matthew Ranostay 2008-01-30 14:58:38 +01:00 committed by Mercurial server
parent 493b4acb9e
commit cace16f174
1 changed files with 16 additions and 8 deletions
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24
sound/pci/hda/patch_sigmatel.c
View File

@ -2283,15 +2283,23 @@ static int stac92xx_auto_create_multi_out_ctls(struct hda_codec *codec,
}
if (spec->mic_switch) {
unsigned int def_conf;
nid = cfg->input_pins[AUTO_PIN_MIC];
pincap = snd_hda_param_read(codec, nid,
AC_PAR_PIN_CAP);
if (pincap & AC_PINCAP_OUT) {
err = stac92xx_add_control(spec,
STAC_CTL_WIDGET_IO_SWITCH,
"Mic as Output Switch", (nid << 8) | 1);
if (err < 0)
return err;
def_conf = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CONFIG_DEFAULT, 0);
/* some laptops have an internal analog microphone
* which can't be used as a output */
if (get_defcfg_connect(def_conf) != AC_JACK_PORT_FIXED) {
pincap = snd_hda_param_read(codec, nid,
AC_PAR_PIN_CAP);
if (pincap & AC_PINCAP_OUT) {
err = stac92xx_add_control(spec,
STAC_CTL_WIDGET_IO_SWITCH,
"Mic as Output Switch", (nid << 8) | 1);
if (err < 0)
return err;
}
}
}