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 #include <linux/err.h>
  16
  17 struct auto_pin_cfg;
  18 struct hda_jack_tbl;
  19 struct hda_jack_callback;
  20
  21 typedef void (*hda_jack_callback_fn) (struct hda_codec *, struct hda_jack_callback *);
  22
  23 struct hda_jack_callback {
  24         struct hda_jack_tbl *tbl;
  25         hda_jack_callback_fn func;
  26         unsigned int private_data;      /* arbitrary data */
  27         struct hda_jack_callback *next;
  28 };
  29
  30 struct hda_jack_tbl {
  31         hda_nid_t nid;
  32         unsigned char tag;              /* unsol event tag */
  33         struct hda_jack_callback *callback;
  34         /* jack-detection stuff */
  35         unsigned int pin_sense;         /* cached pin-sense value */
  36         unsigned int jack_detect:1;     /* capable of jack-detection? */
  37         unsigned int jack_dirty:1;      /* needs to update? */
  38         unsigned int phantom_jack:1;    /* a fixed, always present port? */
  39         unsigned int block_report:1;    /* in a transitional state - do not report to userspace */
  40         hda_nid_t gating_jack;          /* valid when gating jack plugged */
  41         hda_nid_t gated_jack;           /* gated is dependent on this jack */
  42         int type;
  43         struct snd_jack *jack;
  44 };
  45
  46 struct hda_jack_tbl *
  47 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  48 struct hda_jack_tbl *
  49 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  50
  51 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  52
  53 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  54
  55 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid);
  56 struct hda_jack_callback *
  57 snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
  58                                     hda_jack_callback_fn cb);
  59
  60 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
  61                                  hda_nid_t gating_nid);
  62
  63 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  64
  65 /* the jack state returned from snd_hda_jack_detect_state() */
  66 enum {
  67         HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
  68 };
  69
  70 int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
  71
  72 /**
  73  * snd_hda_jack_detect - Detect the jack
  74  * @codec: the HDA codec
  75  * @nid: pin NID to check jack detection
  76  */
  77 static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
  78 {
  79         return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
  80 }
  81
  82 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
  83
  84 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
  85                           const char *name);
  86 int snd_hda_jack_add_kctls(struct hda_codec *codec,
  87                            const struct auto_pin_cfg *cfg);
  88
  89 void snd_hda_jack_report_sync(struct hda_codec *codec);
  90
  91 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
  92
  93 void snd_hda_jack_poll_all(struct hda_codec *codec);
  94
  95 #endif /* __SOUND_HDA_JACK_H */