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yaml --- r: 284203 b: refs/heads/master c: 1835a0f h: refs/heads/master i: 284201: d2e33b6 284199: 421bf3e v: v3
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Takashi Iwai
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Nov 16, 2011
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: 04f5ade6afc4326dc6cd10d235500972fba548eb | ||
| refs/heads/master: 1835a0f9a2121ce3198dab67507d4d3e960cc09e |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,148 @@ | ||
| /* | ||
| * Jack-detection handling for HD-audio | ||
| * | ||
| * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> | ||
| * | ||
| * This driver is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| */ | ||
|
|
||
| #include <linux/init.h> | ||
| #include <linux/slab.h> | ||
| #include <sound/core.h> | ||
| #include "hda_codec.h" | ||
| #include "hda_local.h" | ||
| #include "hda_jack.h" | ||
|
|
||
| /* execute pin sense measurement */ | ||
| static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid) | ||
| { | ||
| u32 pincap; | ||
|
|
||
| if (!codec->no_trigger_sense) { | ||
| pincap = snd_hda_query_pin_caps(codec, nid); | ||
| if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */ | ||
| snd_hda_codec_read(codec, nid, 0, | ||
| AC_VERB_SET_PIN_SENSE, 0); | ||
| } | ||
| return snd_hda_codec_read(codec, nid, 0, | ||
| AC_VERB_GET_PIN_SENSE, 0); | ||
| } | ||
|
|
||
| /** | ||
| * snd_hda_jack_tbl_get - query the jack-table entry for the given NID | ||
| */ | ||
| struct hda_jack_tbl * | ||
| snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid) | ||
| { | ||
| struct hda_jack_tbl *jack = codec->jacktbl.list; | ||
| int i; | ||
|
|
||
| if (!nid || !jack) | ||
| return NULL; | ||
| for (i = 0; i < codec->jacktbl.used; i++, jack++) | ||
| if (jack->nid == nid) | ||
| return jack; | ||
| return NULL; | ||
| } | ||
| EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get); | ||
|
|
||
| /** | ||
| * snd_hda_jack_tbl_new - create a jack-table entry for the given NID | ||
| */ | ||
| struct hda_jack_tbl * | ||
| snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid) | ||
| { | ||
| struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid); | ||
| if (jack) | ||
| return jack; | ||
| snd_array_init(&codec->jacktbl, sizeof(*jack), 16); | ||
| jack = snd_array_new(&codec->jacktbl); | ||
| if (!jack) | ||
| return NULL; | ||
| jack->nid = nid; | ||
| jack->jack_dirty = 1; | ||
| return jack; | ||
| } | ||
|
|
||
| void snd_hda_jack_tbl_clear(struct hda_codec *codec) | ||
| { | ||
| snd_array_free(&codec->jacktbl); | ||
| } | ||
|
|
||
| /* update the cached value and notification flag if needed */ | ||
| static void jack_detect_update(struct hda_codec *codec, | ||
| struct hda_jack_tbl *jack) | ||
| { | ||
| if (jack->jack_dirty) { | ||
| jack->pin_sense = read_pin_sense(codec, jack->nid); | ||
| jack->jack_dirty = 0; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * snd_hda_set_dirty_all - Mark all the cached as dirty | ||
| * | ||
| * This function sets the dirty flag to all entries of jack table. | ||
| * It's called from the resume path in hda_codec.c. | ||
| */ | ||
| void snd_hda_jack_set_dirty_all(struct hda_codec *codec) | ||
| { | ||
| struct hda_jack_tbl *jack = codec->jacktbl.list; | ||
| int i; | ||
|
|
||
| for (i = 0; i < codec->jacktbl.used; i++, jack++) | ||
| if (jack->nid) | ||
| jack->jack_dirty = 1; | ||
| } | ||
| EXPORT_SYMBOL_HDA(snd_hda_jack_set_dirty_all); | ||
|
|
||
| /** | ||
| * snd_hda_pin_sense - execute pin sense measurement | ||
| * @codec: the CODEC to sense | ||
| * @nid: the pin NID to sense | ||
| * | ||
| * Execute necessary pin sense measurement and return its Presence Detect, | ||
| * Impedance, ELD Valid etc. status bits. | ||
| */ | ||
| u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid) | ||
| { | ||
| struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid); | ||
| if (jack) { | ||
| jack_detect_update(codec, jack); | ||
| return jack->pin_sense; | ||
| } | ||
| return read_pin_sense(codec, nid); | ||
| } | ||
| EXPORT_SYMBOL_HDA(snd_hda_pin_sense); | ||
|
|
||
| /** | ||
| * snd_hda_jack_detect - query pin Presence Detect status | ||
| * @codec: the CODEC to sense | ||
| * @nid: the pin NID to sense | ||
| * | ||
| * Query and return the pin's Presence Detect status. | ||
| */ | ||
| int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid) | ||
| { | ||
| u32 sense = snd_hda_pin_sense(codec, nid); | ||
| return !!(sense & AC_PINSENSE_PRESENCE); | ||
| } | ||
| EXPORT_SYMBOL_HDA(snd_hda_jack_detect); | ||
|
|
||
| /** | ||
| * snd_hda_jack_detect_enable - enable the jack-detection | ||
| */ | ||
| int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid, | ||
| unsigned int tag) | ||
| { | ||
| struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid); | ||
| if (!jack) | ||
| return -ENOMEM; | ||
| return snd_hda_codec_write_cache(codec, nid, 0, | ||
| AC_VERB_SET_UNSOLICITED_ENABLE, | ||
| AC_USRSP_EN | tag); | ||
| } | ||
| EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* | ||
| * Jack-detection handling for HD-audio | ||
| * | ||
| * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de> | ||
| * | ||
| * This driver is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| */ | ||
|
|
||
| #ifndef __SOUND_HDA_JACK_H | ||
| #define __SOUND_HDA_JACK_H | ||
|
|
||
| struct hda_jack_tbl { | ||
| hda_nid_t nid; | ||
| unsigned int pin_sense; /* cached pin-sense value */ | ||
| unsigned int jack_dirty:1; /* needs to update? */ | ||
| }; | ||
|
|
||
| struct hda_jack_tbl * | ||
| snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid); | ||
|
|
||
| struct hda_jack_tbl * | ||
| snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid); | ||
| void snd_hda_jack_tbl_clear(struct hda_codec *codec); | ||
|
|
||
| /** | ||
| * snd_hda_jack_set_dirty - set the dirty flag for the given jack-entry | ||
| * | ||
| * Call this function when a pin-state may change, e.g. when the hardware | ||
| * notifies via an unsolicited event. | ||
| */ | ||
| static inline void snd_hda_jack_set_dirty(struct hda_codec *codec, | ||
| hda_nid_t nid) | ||
| { | ||
| struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid); | ||
| if (jack) | ||
| jack->jack_dirty = 1; | ||
| } | ||
|
|
||
| void snd_hda_jack_set_dirty_all(struct hda_codec *codec); | ||
|
|
||
| int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid, | ||
| unsigned int tag); | ||
|
|
||
| u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid); | ||
| int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid); | ||
|
|
||
| static inline bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid) | ||
| { | ||
| if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT)) | ||
| return false; | ||
| if (!codec->ignore_misc_bit && | ||
| (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) & | ||
| AC_DEFCFG_MISC_NO_PRESENCE)) | ||
| return false; | ||
| if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP)) | ||
| return false; | ||
| return true; | ||
| } | ||
|
|
||
| #endif /* __SOUND_HDA_JACK_H */ |
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