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         unsigned int block_report:1;    /* in a transitional state - do not report to userspace */
  32         hda_nid_t gating_jack;          /* valid when gating jack plugged */
  33         hda_nid_t gated_jack;           /* gated is dependent on this jack */
  34         struct snd_kcontrol *kctl;      /* assigned kctl for jack-detection */
  35 #ifdef CONFIG_SND_HDA_INPUT_JACK
  36         int type;
  37         struct snd_jack *jack;
  38 #endif
  39 };
  40
  41 struct hda_jack_tbl *
  42 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  43 struct hda_jack_tbl *
  44 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  45
  46 struct hda_jack_tbl *
  47 snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid);
  48 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  49
  50 /**
  51  * snd_hda_jack_get_action - get jack-tbl entry for the tag
  52  *
  53  * Call this from the unsol event handler to get the assigned action for the
  54  * event.  This will mark the dirty flag for the later reporting, too.
  55  */
  56 static inline unsigned char
  57 snd_hda_jack_get_action(struct hda_codec *codec, unsigned int tag)
  58 {
  59         struct hda_jack_tbl *jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
  60         if (jack) {
  61                 jack->jack_dirty = 1;
  62                 return jack->action;
  63         }
  64         return 0;
  65 }
  66
  67 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  68
  69 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
  70                                unsigned char action);
  71 int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
  72                                         unsigned char action,
  73                                         hda_jack_callback cb);
  74
  75 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
  76                                  hda_nid_t gating_nid);
  77
  78 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  79
  80 /* the jack state returned from snd_hda_jack_detect_state() */
  81 enum {
  82         HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
  83 };
  84
  85 int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
  86
  87 static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
  88 {
  89         return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
  90 }
  91
  92 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
  93
  94 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
  95                           const char *name, int idx);
  96 int snd_hda_jack_add_kctls(struct hda_codec *codec,
  97                            const struct auto_pin_cfg *cfg);
  98
  99 void snd_hda_jack_report_sync(struct hda_codec *codec);
 100
 101 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
 102
 103 void snd_hda_jack_poll_all(struct hda_codec *codec);
 104
 105 #endif /* __SOUND_HDA_JACK_H */