64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
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/*
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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_dirty:1; /* needs to update? */
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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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#endif /* __SOUND_HDA_JACK_H */
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