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
  17 struct hda_jack_tbl {
  18         hda_nid_t nid;
  19         unsigned char action;           /* event action (0 = none) */
  20         unsigned char tag;              /* unsol event tag */
  21         unsigned int private_data;      /* arbitrary data */
  22         /* jack-detection stuff */
  23         unsigned int pin_sense;         /* cached pin-sense value */
  24         unsigned int jack_detect:1;     /* capable of jack-detection? */
  25         unsigned int jack_dirty:1;      /* needs to update? */
  26         unsigned int phantom_jack:1;    /* a fixed, always present port? */
  27         struct snd_kcontrol *kctl;      /* assigned kctl for jack-detection */
  28 #ifdef CONFIG_SND_HDA_INPUT_JACK
  29         int type;
  30         struct snd_jack *jack;
  31 #endif
  32 };
  33
  34 struct hda_jack_tbl *
  35 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  36 struct hda_jack_tbl *
  37 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  38
  39 struct hda_jack_tbl *
  40 snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid);
  41 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  42
  43 /**
  44  * snd_hda_jack_get_action - get jack-tbl entry for the tag
  45  *
  46  * Call this from the unsol event handler to get the assigned action for the
  47  * event.  This will mark the dirty flag for the later reporting, too.
  48  */
  49 static inline unsigned char
  50 snd_hda_jack_get_action(struct hda_codec *codec, unsigned int tag)
  51 {
  52         struct hda_jack_tbl *jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
  53         if (jack) {
  54                 jack->jack_dirty = 1;
  55                 return jack->action;
  56         }
  57         return 0;
  58 }
  59
  60 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  61
  62 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
  63                                unsigned char action);
  64
  65 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  66 int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid);
  67
  68 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
  69
  70 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
  71                           const char *name, int idx);
  72 int snd_hda_jack_add_kctls(struct hda_codec *codec,
  73                            const struct auto_pin_cfg *cfg);
  74
  75 void snd_hda_jack_report_sync(struct hda_codec *codec);
  76
  77
  78 #endif /* __SOUND_HDA_JACK_H */