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 */ 106