sound/pci/hda/hda_jack.h

   1 /*
   2  * Jack-detection handling for HD-audio
   3  *
   4  * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
   5  *
   6  * This driver is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #ifndef __SOUND_HDA_JACK_H
  13 #define __SOUND_HDA_JACK_H
  14
  15 struct hda_jack_tbl {
  16         hda_nid_t nid;
  17         unsigned char action;           /* event action (0 = none) */
  18         unsigned char tag;              /* unsol event tag */
  19         unsigned int private_data;      /* arbitrary data */
  20         /* jack-detection stuff */
  21         unsigned int pin_sense;         /* cached pin-sense value */
  22         unsigned int jack_detect:1;     /* capable of jack-detection? */
  23         unsigned int jack_dirty:1;      /* needs to update? */
  24         struct snd_kcontrol *kctl;      /* assigned kctl for jack-detection */
  25 #ifdef CONFIG_SND_HDA_INPUT_JACK
  26         int type;
  27         struct snd_jack *jack;
  28 #endif
  29 };
  30
  31 struct hda_jack_tbl *
  32 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  33 struct hda_jack_tbl *
  34 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  35
  36 struct hda_jack_tbl *
  37 snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid);
  38 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  39
  40 /**
  41  * snd_hda_jack_get_action - get jack-tbl entry for the tag
  42  *
  43  * Call this from the unsol event handler to get the assigned action for the
  44  * event.  This will mark the dirty flag for the later reporting, too.
  45  */
  46 static inline unsigned char
  47 snd_hda_jack_get_action(struct hda_codec *codec, unsigned int tag)
  48 {
  49         struct hda_jack_tbl *jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
  50         if (jack) {
  51                 jack->jack_dirty = 1;
  52                 return jack->action;
  53         }
  54         return 0;
  55 }
  56
  57 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  58
  59 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
  60                                unsigned char action);
  61
  62 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  63 int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
  64
  65 static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
  66 {
  67         if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
  68                 return false;
  69         if (!codec->ignore_misc_bit &&
  70             (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
  71              AC_DEFCFG_MISC_NO_PRESENCE))
  72                 return false;
  73         if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
  74                 return false;
  75         return true;
  76 }
  77
  78 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
  79                           const char *name, int idx);
  80 int snd_hda_jack_add_kctls(struct hda_codec *codec,
  81                            const struct auto_pin_cfg *cfg);
  82
  83 void snd_hda_jack_report_sync(struct hda_codec *codec);
  84
  85
  86 #endif /* __SOUND_HDA_JACK_H */