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 auto_pin_cfg;
  16 struct hda_jack_tbl;
  17
  18 typedef void (*hda_jack_callback) (struct hda_codec *, struct hda_jack_tbl *);
  19
  20 struct hda_jack_tbl {
  21         hda_nid_t nid;
  22         unsigned char action;           /* event action (0 = none) */
  23         unsigned char tag;              /* unsol event tag */
  24         unsigned int private_data;      /* arbitrary data */
  25         hda_jack_callback callback;
  26         /* jack-detection stuff */
  27         unsigned int pin_sense;         /* cached pin-sense value */
  28         unsigned int jack_detect:1;     /* capable of jack-detection? */
  29         unsigned int jack_dirty:1;      /* needs to update? */
  30         unsigned int phantom_jack:1;    /* a fixed, always present port? */
  31         struct snd_kcontrol *kctl;      /* assigned kctl for jack-detection */
  32 #ifdef CONFIG_SND_HDA_INPUT_JACK
  33         int type;
  34         struct snd_jack *jack;
  35 #endif
  36 };
  37
  38 struct hda_jack_tbl *
  39 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  40 struct hda_jack_tbl *
  41 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  42
  43 struct hda_jack_tbl *
  44 snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid);
  45 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  46
  47 /**
  48  * snd_hda_jack_get_action - get jack-tbl entry for the tag
  49  *
  50  * Call this from the unsol event handler to get the assigned action for the
  51  * event.  This will mark the dirty flag for the later reporting, too.
  52  */
  53 static inline unsigned char
  54 snd_hda_jack_get_action(struct hda_codec *codec, unsigned int tag)
  55 {
  56         struct hda_jack_tbl *jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
  57         if (jack) {
  58                 jack->jack_dirty = 1;
  59                 return jack->action;
  60         }
  61         return 0;
  62 }
  63
  64 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  65
  66 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
  67                                unsigned char action);
  68 int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
  69                                         unsigned char action,
  70                                         hda_jack_callback cb);
  71
  72
  73 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  74 int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
  75
  76 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
  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 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
  86
  87 #endif /* __SOUND_HDA_JACK_H */