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sound/pci/hda/hda_jack.c
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/* * 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> |
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#include <linux/export.h> |
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#include <sound/core.h> |
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#include <sound/control.h> |
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#include <sound/jack.h> |
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#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); /** |
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* snd_hda_jack_tbl_get_from_tag - query the jack-table entry for the given tag */ struct hda_jack_tbl * snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag) { struct hda_jack_tbl *jack = codec->jacktbl.list; int i; if (!tag || !jack) return NULL; for (i = 0; i < codec->jacktbl.used; i++, jack++) if (jack->tag == tag) return jack; return NULL; } EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get_from_tag); /** |
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* 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; |
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jack->tag = codec->jacktbl.used; |
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return jack; } |
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EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_new); |
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void snd_hda_jack_tbl_clear(struct hda_codec *codec) { |
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#ifdef CONFIG_SND_HDA_INPUT_JACK /* free jack instances manually when clearing/reconfiguring */ if (!codec->bus->shutdown && codec->jacktbl.list) { struct hda_jack_tbl *jack = codec->jacktbl.list; int i; for (i = 0; i < codec->jacktbl.used; i++, jack++) { if (jack->jack) snd_device_free(codec->bus->card, jack->jack); } } #endif |
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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) { |
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if (jack->jack_dirty || !jack->jack_detect) { |
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jack->pin_sense = read_pin_sense(codec, jack->nid); |
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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); |
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#define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE) |
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/** * 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); |
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return get_jack_plug_state(sense); |
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} 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, |
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unsigned char action) |
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{ struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid); if (!jack) return -ENOMEM; |
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if (jack->jack_detect) |
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return 0; /* already registered */ |
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jack->jack_detect = 1; if (action) jack->action = action; |
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return snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_UNSOLICITED_ENABLE, |
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AC_USRSP_EN | jack->tag); |
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} EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable); |
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/** |
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* snd_hda_jack_report_sync - sync the states of all jacks and report if changed */ void snd_hda_jack_report_sync(struct hda_codec *codec) { struct hda_jack_tbl *jack = codec->jacktbl.list; |
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int i, state; |
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for (i = 0; i < codec->jacktbl.used; i++, jack++) if (jack->nid) { jack_detect_update(codec, jack); |
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if (!jack->kctl) continue; |
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state = get_jack_plug_state(jack->pin_sense); |
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snd_kctl_jack_report(codec->bus->card, jack->kctl, state); |
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#ifdef CONFIG_SND_HDA_INPUT_JACK if (jack->jack) snd_jack_report(jack->jack, state ? jack->type : 0); #endif |
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} } EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync); |
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#ifdef CONFIG_SND_HDA_INPUT_JACK /* guess the jack type from the pin-config */ static int get_input_jack_type(struct hda_codec *codec, hda_nid_t nid) { unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid); switch (get_defcfg_device(def_conf)) { case AC_JACK_LINE_OUT: case AC_JACK_SPEAKER: return SND_JACK_LINEOUT; case AC_JACK_HP_OUT: return SND_JACK_HEADPHONE; case AC_JACK_SPDIF_OUT: case AC_JACK_DIG_OTHER_OUT: return SND_JACK_AVOUT; case AC_JACK_MIC_IN: return SND_JACK_MICROPHONE; default: return SND_JACK_LINEIN; } } static void hda_free_jack_priv(struct snd_jack *jack) { struct hda_jack_tbl *jacks = jack->private_data; jacks->nid = 0; jacks->jack = NULL; } #endif |
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/** * snd_hda_jack_add_kctl - Add a kctl for the given pin * * This assigns a jack-detection kctl to the given pin. The kcontrol * will have the given name and index. */ int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid, const char *name, int idx) { struct hda_jack_tbl *jack; struct snd_kcontrol *kctl; |
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int err, state; |
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jack = snd_hda_jack_tbl_new(codec, nid); |
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if (!jack) return 0; if (jack->kctl) return 0; /* already created */ |
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kctl = snd_kctl_jack_new(name, idx, codec); |
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if (!kctl) return -ENOMEM; |
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err = snd_hda_ctl_add(codec, nid, kctl); if (err < 0) return err; |
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jack->kctl = kctl; |
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state = snd_hda_jack_detect(codec, nid); snd_kctl_jack_report(codec->bus->card, kctl, state); #ifdef CONFIG_SND_HDA_INPUT_JACK jack->type = get_input_jack_type(codec, nid); err = snd_jack_new(codec->bus->card, name, jack->type, &jack->jack); if (err < 0) return err; jack->jack->private_data = jack; jack->jack->private_free = hda_free_jack_priv; snd_jack_report(jack->jack, state ? jack->type : 0); #endif |
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return 0; } |
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EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl); |
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static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid, |
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const struct auto_pin_cfg *cfg) { |
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unsigned int def_conf, conn; |
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char name[44]; int idx, err; |
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if (!nid) return 0; if (!is_jack_detectable(codec, nid)) return 0; |
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def_conf = snd_hda_codec_get_pincfg(codec, nid); conn = get_defcfg_connect(def_conf); if (conn != AC_JACK_PORT_COMPLEX) return 0; |
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snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx); err = snd_hda_jack_add_kctl(codec, nid, name, idx); |
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if (err < 0) return err; return snd_hda_jack_detect_enable(codec, nid, 0); |
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} /** * snd_hda_jack_add_kctls - Add kctls for all pins included in the given pincfg |
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*/ int snd_hda_jack_add_kctls(struct hda_codec *codec, const struct auto_pin_cfg *cfg) { const hda_nid_t *p; int i, err; for (i = 0, p = cfg->line_out_pins; i < cfg->line_outs; i++, p++) { |
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err = add_jack_kctl(codec, *p, cfg); |
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if (err < 0) return err; } for (i = 0, p = cfg->hp_pins; i < cfg->hp_outs; i++, p++) { if (*p == *cfg->line_out_pins) /* might be duplicated */ break; |
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err = add_jack_kctl(codec, *p, cfg); |
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if (err < 0) return err; } for (i = 0, p = cfg->speaker_pins; i < cfg->speaker_outs; i++, p++) { if (*p == *cfg->line_out_pins) /* might be duplicated */ break; |
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err = add_jack_kctl(codec, *p, cfg); |
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if (err < 0) return err; } for (i = 0; i < cfg->num_inputs; i++) { |
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err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg); |
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if (err < 0) return err; } for (i = 0, p = cfg->dig_out_pins; i < cfg->dig_outs; i++, p++) { |
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err = add_jack_kctl(codec, *p, cfg); |
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if (err < 0) return err; } |
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err = add_jack_kctl(codec, cfg->dig_in_pin, cfg); |
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if (err < 0) return err; |
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err = add_jack_kctl(codec, cfg->mono_out_pin, cfg); |
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if (err < 0) return err; return 0; } EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls); |