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         hda_nid_t nid;
  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         struct snd_kcontrol *kctl;      /* assigned kctl for jack-detection */
  43 #ifdef CONFIG_SND_HDA_INPUT_JACK
  44         int type;
  45         struct snd_jack *jack;
  46 #endif
  47 };
  48
  49 struct hda_jack_tbl *
  50 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid);
  51 struct hda_jack_tbl *
  52 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag);
  53
  54 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
  55
  56 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
  57
  58 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid);
  59 struct hda_jack_callback *
  60 snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
  61                                     hda_jack_callback_fn cb);
  62
  63 int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
  64                                  hda_nid_t gating_nid);
  65
  66 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid);
  67
  68 /* the jack state returned from snd_hda_jack_detect_state() */
  69 enum {
  70         HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT, HDA_JACK_PHANTOM,
  71 };
  72
  73 int snd_hda_jack_detect_state(struct hda_codec *codec, hda_nid_t nid);
  74
  75 /**
  76  * snd_hda_jack_detect - Detect the jack
  77  * @codec: the HDA codec
  78  * @nid: pin NID to check jack detection
  79  */
  80 static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
  81 {
  82         return snd_hda_jack_detect_state(codec, nid) != HDA_JACK_NOT_PRESENT;
  83 }
  84
  85 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
  86
  87 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
  88                           const char *name, int idx);
  89 int snd_hda_jack_add_kctls(struct hda_codec *codec,
  90                            const struct auto_pin_cfg *cfg);
  91
  92 void snd_hda_jack_report_sync(struct hda_codec *codec);
  93
  94 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res);
  95
  96 void snd_hda_jack_poll_all(struct hda_codec *codec);
  97
  98 #endif /* __SOUND_HDA_JACK_H */