ALSA: hda - Add a flag to suppress mic auto-switch

Add a new flag spec->suppress_mic_auto_switch for codecs that don't
support unsol events properly like VT1708.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 8e7ce7d..b488c62 100644 (file)
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -3034,6 +3034,9 @@ static int check_auto_mic_availability(struct hda_codec *codec)
        unsigned int types;
        int i, num_pins;
 
+       if (spec->suppress_auto_mic)
+               return 0;
+
        types = 0;
        num_pins = 0;
        for (i = 0; i < cfg->num_inputs; i++) {

diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h
index 343195c..1763e33 100644 (file)
--- a/sound/pci/hda/hda_generic.h
+++ b/sound/pci/hda/hda_generic.h
@@ -175,6 +175,7 @@ struct hda_gen_spec {
        unsigned int automute_speaker_possible:1; /* there are speakers and either LO or HP */
        unsigned int automute_lo_possible:1;      /* there are line outs and HP */
        unsigned int keep_vref_in_automute:1; /* Don't clear VREF in automute */
+       unsigned int suppress_auto_mic:1; /* suppress input jack auto switch */
        unsigned int line_in_auto_switch:1; /* allow line-in auto switch */
 
        /* other flags */