01a61e12b4
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>
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* Jack-detection handling for HD-audio
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*
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* Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __SOUND_HDA_JACK_H
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#define __SOUND_HDA_JACK_H
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struct hda_jack_tbl {
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hda_nid_t nid;
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unsigned int pin_sense; /* cached pin-sense value */
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unsigned int jack_cachable:1; /* can be updated via unsol events */
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unsigned int jack_dirty:1; /* needs to update? */
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unsigned int need_notify:1; /* to be notified? */
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struct snd_kcontrol *kctl; /* assigned kctl for jack-detection */
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};
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struct hda_jack_tbl *
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snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
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struct hda_jack_tbl *
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snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid);
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void snd_hda_jack_tbl_clear(struct hda_codec *codec);
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/**
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* snd_hda_jack_set_dirty - set the dirty flag for the given jack-entry
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*
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* Call this function when a pin-state may change, e.g. when the hardware
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* notifies via an unsolicited event.
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*/
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static inline void snd_hda_jack_set_dirty(struct hda_codec *codec,
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hda_nid_t nid)
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{
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struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
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if (jack)
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jack->jack_dirty = 1;
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}
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void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
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int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
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unsigned int tag);
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u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
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int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
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static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
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{
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if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
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return false;
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if (!codec->ignore_misc_bit &&
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(get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
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AC_DEFCFG_MISC_NO_PRESENCE))
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return false;
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if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
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return false;
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return true;
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}
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int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
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const char *name, int idx);
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int snd_hda_jack_add_kctls(struct hda_codec *codec,
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const struct auto_pin_cfg *cfg);
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void snd_hda_jack_report(struct hda_codec *codec, hda_nid_t nid);
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void snd_hda_jack_report_sync(struct hda_codec *codec);
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#endif /* __SOUND_HDA_JACK_H */
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