| Takashi Iwai | 1835a0f | 2011-10-27 22:12:46 +0200 | [diff] [blame^] | 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 hda_jack_tbl { |
| 16 | hda_nid_t nid; |
| 17 | unsigned int pin_sense; /* cached pin-sense value */ |
| 18 | unsigned int jack_dirty:1; /* needs to update? */ |
| 19 | }; |
| 20 | |
| 21 | struct hda_jack_tbl * |
| 22 | snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid); |
| 23 | |
| 24 | struct hda_jack_tbl * |
| 25 | snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid); |
| 26 | void snd_hda_jack_tbl_clear(struct hda_codec *codec); |
| 27 | |
| 28 | /** |
| 29 | * snd_hda_jack_set_dirty - set the dirty flag for the given jack-entry |
| 30 | * |
| 31 | * Call this function when a pin-state may change, e.g. when the hardware |
| 32 | * notifies via an unsolicited event. |
| 33 | */ |
| 34 | static inline void snd_hda_jack_set_dirty(struct hda_codec *codec, |
| 35 | hda_nid_t nid) |
| 36 | { |
| 37 | struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid); |
| 38 | if (jack) |
| 39 | jack->jack_dirty = 1; |
| 40 | } |
| 41 | |
| 42 | void snd_hda_jack_set_dirty_all(struct hda_codec *codec); |
| 43 | |
| 44 | int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid, |
| 45 | unsigned int tag); |
| 46 | |
| 47 | u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid); |
| 48 | int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid); |
| 49 | |
| 50 | static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid) |
| 51 | { |
| 52 | if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT)) |
| 53 | return false; |
| 54 | if (!codec->ignore_misc_bit && |
| 55 | (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) & |
| 56 | AC_DEFCFG_MISC_NO_PRESENCE)) |
| 57 | return false; |
| 58 | if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP)) |
| 59 | return false; |
| 60 | return true; |
| 61 | } |
| 62 | |
| 63 | #endif /* __SOUND_HDA_JACK_H */ |