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ALSA: hda - Create jack-detection kcontrols

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Create kcontrols for pin jack-detections, which work similarly like
jack-input layer.  Each control will notify when the jack is plugged or
unplugged, and also user can read the value at any time via the normal
control API.

The control elements are created with iface=CARD, so that they won't
appear in the mixer apps.

So far, only the pins that enabled the jack-detection are registered.
For covering all pins, the transition of the common unsol-tag handling
would be needed.  Stay tuned.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2011-10-28 00:03:22 +02:00
parent 1835a0f9a2
commit 01a61e12b4
8 changed files with 232 additions and 4 deletions
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7
sound/pci/hda/patch_via.c
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@ -1500,6 +1500,11 @@ static int via_build_controls(struct hda_codec *codec)
analog_low_current_mode(codec);
via_free_kctls(codec); /* no longer needed */
err = snd_hda_jack_add_kctls(codec, &spec->autocfg);
if (err < 0)
return err;
return 0;
}
@ -1722,6 +1727,7 @@ static void via_unsol_event(struct hda_codec *codec,
via_hp_automute(codec);
else if (res == VIA_GPIO_EVENT)
via_gpio_control(codec);
snd_hda_jack_report_sync(codec);
}
#ifdef CONFIG_PM
@ -2771,6 +2777,7 @@ static int via_init(struct hda_codec *codec)
via_auto_init_unsol_event(codec);
via_hp_automute(codec);
snd_hda_jack_report_sync(codec);
return 0;
}