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         hda_nid_t gating_jack;          /* valid when gating jack plugged */
  32         hda_nid_t gated_jack;           /* gated is dependent on this jack */
  33         struct snd_kcontrol *kctl;      /* assigned kctl for jack-detection */
  34 #ifdef CONFIG_SND_HDA_INPUT_JACK
  35         int type;
  36         struct snd_jack *jack;
  37 #endif
  38 };
  39
  40 struct hda_jack_tbl *
  41 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  42 struct hda_jack_tbl *
  43 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  44
  45 struct hda_jack_tbl *
  46 snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid);
  47 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  48
  49 /**
  50  * snd_hda_jack_get_action - get jack-tbl entry for the tag
  51  *
  52  * Call this from the unsol event handler to get the assigned action for the
  53  * event.  This will mark the dirty flag for the later reporting, too.
  54  */
  55 static inline unsigned char
  56 snd_hda_jack_get_action(struct hda_codec *codec, unsigned int tag)
  57 {
  58         struct hda_jack_tbl *jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
  59         if (jack) {
  60                 jack->jack_dirty = 1;
  61                 return jack->action;
  62         }
  63         return 0;
  64 }
  65
  66 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  67
  68 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
  69                                unsigned char action);
  70 int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
  71                                         unsigned char action,
  72                                         hda_jack_callback cb);
  73
  74 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
  75                                  hda_nid_t gating_nid);
  76
  77 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  78
  79 /* the jack state returned from snd_hda_jack_detect_state() */
  80 enum {
  81         HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
  82 };
  83
  84 int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
  85
  86 static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
  87 {
  88         return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
  89 }
  90
  91 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
  92
  93 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
  94                           const char *name, int idx);
  95 int snd_hda_jack_add_kctls(struct hda_codec *codec,
  96                            const struct auto_pin_cfg *cfg);
  97
  98 void snd_hda_jack_report_sync(struct hda_codec *codec);
  99
 100 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
 101
 102 void snd_hda_jack_poll_all(struct hda_codec *codec);
 103
 104 #endif /* __SOUND_HDA_JACK_H */