524 lines
14 KiB
C
524 lines
14 KiB
C
/*
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* Jack-detection handling for HD-audio
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*
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* Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/init.h>
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#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"
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#include "hda_local.h"
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#include "hda_auto_parser.h"
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#include "hda_jack.h"
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bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
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{
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if (codec->no_jack_detect)
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return false;
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if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
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return false;
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if (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
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AC_DEFCFG_MISC_NO_PRESENCE)
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return false;
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if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP) &&
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!codec->jackpoll_interval)
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return false;
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return true;
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}
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EXPORT_SYMBOL_HDA(is_jack_detectable);
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/* execute pin sense measurement */
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static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid)
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{
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u32 pincap;
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u32 val;
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if (!codec->no_trigger_sense) {
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pincap = snd_hda_query_pin_caps(codec, nid);
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if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
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snd_hda_codec_read(codec, nid, 0,
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AC_VERB_SET_PIN_SENSE, 0);
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}
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val = snd_hda_codec_read(codec, nid, 0,
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AC_VERB_GET_PIN_SENSE, 0);
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if (codec->inv_jack_detect)
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val ^= AC_PINSENSE_PRESENCE;
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return val;
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}
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/**
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* snd_hda_jack_tbl_get - query the jack-table entry for the given NID
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*/
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struct hda_jack_tbl *
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snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
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{
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struct hda_jack_tbl *jack = codec->jacktbl.list;
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int i;
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if (!nid || !jack)
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return NULL;
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for (i = 0; i < codec->jacktbl.used; i++, jack++)
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if (jack->nid == nid)
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return jack;
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return NULL;
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get);
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/**
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* snd_hda_jack_tbl_get_from_tag - query the jack-table entry for the given tag
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*/
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struct hda_jack_tbl *
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snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag)
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{
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struct hda_jack_tbl *jack = codec->jacktbl.list;
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int i;
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if (!tag || !jack)
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return NULL;
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for (i = 0; i < codec->jacktbl.used; i++, jack++)
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if (jack->tag == tag)
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return jack;
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return NULL;
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get_from_tag);
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/**
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* snd_hda_jack_tbl_new - create a jack-table entry for the given NID
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*/
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struct hda_jack_tbl *
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snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid)
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{
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struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
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if (jack)
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return jack;
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jack = snd_array_new(&codec->jacktbl);
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if (!jack)
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return NULL;
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jack->nid = nid;
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jack->jack_dirty = 1;
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jack->tag = codec->jacktbl.used;
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return jack;
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}
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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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{
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#ifdef CONFIG_SND_HDA_INPUT_JACK
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/* free jack instances manually when clearing/reconfiguring */
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if (!codec->bus->shutdown && codec->jacktbl.list) {
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struct hda_jack_tbl *jack = codec->jacktbl.list;
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int i;
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for (i = 0; i < codec->jacktbl.used; i++, jack++) {
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if (jack->jack)
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snd_device_free(codec->bus->card, jack->jack);
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}
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}
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#endif
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snd_array_free(&codec->jacktbl);
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}
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#define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE)
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/* update the cached value and notification flag if needed */
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static void jack_detect_update(struct hda_codec *codec,
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struct hda_jack_tbl *jack)
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{
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if (!jack->jack_dirty)
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return;
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if (jack->phantom_jack)
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jack->pin_sense = AC_PINSENSE_PRESENCE;
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else
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jack->pin_sense = read_pin_sense(codec, jack->nid);
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/* A gating jack indicates the jack is invalid if gating is unplugged */
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if (jack->gating_jack && !snd_hda_jack_detect(codec, jack->gating_jack))
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jack->pin_sense &= ~AC_PINSENSE_PRESENCE;
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jack->jack_dirty = 0;
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/* If a jack is gated by this one update it. */
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if (jack->gated_jack) {
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struct hda_jack_tbl *gated =
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snd_hda_jack_tbl_get(codec, jack->gated_jack);
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if (gated) {
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gated->jack_dirty = 1;
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jack_detect_update(codec, gated);
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}
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}
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}
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/**
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* snd_hda_set_dirty_all - Mark all the cached as dirty
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*
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* This function sets the dirty flag to all entries of jack table.
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* It's called from the resume path in hda_codec.c.
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*/
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void snd_hda_jack_set_dirty_all(struct hda_codec *codec)
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{
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struct hda_jack_tbl *jack = codec->jacktbl.list;
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int i;
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for (i = 0; i < codec->jacktbl.used; i++, jack++)
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if (jack->nid)
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jack->jack_dirty = 1;
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_set_dirty_all);
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/**
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* snd_hda_pin_sense - execute pin sense measurement
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* @codec: the CODEC to sense
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* @nid: the pin NID to sense
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*
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* Execute necessary pin sense measurement and return its Presence Detect,
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* Impedance, ELD Valid etc. status bits.
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*/
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u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
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{
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struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
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if (jack) {
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jack_detect_update(codec, jack);
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return jack->pin_sense;
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}
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return read_pin_sense(codec, nid);
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}
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EXPORT_SYMBOL_HDA(snd_hda_pin_sense);
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/**
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* snd_hda_jack_detect - query pin Presence Detect status
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* @codec: the CODEC to sense
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* @nid: the pin NID to sense
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*
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* Query and return the pin's Presence Detect status.
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*/
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int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
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{
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u32 sense = snd_hda_pin_sense(codec, nid);
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return get_jack_plug_state(sense);
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_detect);
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/**
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* snd_hda_jack_detect_enable - enable the jack-detection
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*/
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int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
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unsigned char action,
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hda_jack_callback cb)
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{
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struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid);
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if (!jack)
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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;
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if (action)
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jack->action = action;
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if (cb)
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jack->callback = cb;
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if (codec->jackpoll_interval > 0)
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return 0; /* No unsol if we're polling instead */
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return snd_hda_codec_write_cache(codec, nid, 0,
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AC_VERB_SET_UNSOLICITED_ENABLE,
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AC_USRSP_EN | jack->tag);
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable_callback);
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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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{
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return snd_hda_jack_detect_enable_callback(codec, nid, action, NULL);
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);
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/**
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* snd_hda_jack_set_gating_jack - Set gating jack.
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*
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* Indicates the gated jack is only valid when the gating jack is plugged.
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*/
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int snd_hda_jack_set_gating_jack(struct hda_codec *codec, hda_nid_t gated_nid,
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hda_nid_t gating_nid)
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{
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struct hda_jack_tbl *gated = snd_hda_jack_tbl_get(codec, gated_nid);
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struct hda_jack_tbl *gating = snd_hda_jack_tbl_get(codec, gating_nid);
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if (!gated || !gating)
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return -EINVAL;
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gated->gating_jack = gating_nid;
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gating->gated_jack = gated_nid;
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return 0;
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_set_gating_jack);
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/**
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* snd_hda_jack_report_sync - sync the states of all jacks and report if changed
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*/
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void snd_hda_jack_report_sync(struct hda_codec *codec)
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{
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struct hda_jack_tbl *jack;
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int i, state;
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/* update all jacks at first */
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jack = codec->jacktbl.list;
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for (i = 0; i < codec->jacktbl.used; i++, jack++)
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if (jack->nid)
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jack_detect_update(codec, jack);
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/* report the updated jacks; it's done after updating all jacks
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* to make sure that all gating jacks properly have been set
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*/
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jack = codec->jacktbl.list;
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for (i = 0; i < codec->jacktbl.used; i++, jack++)
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if (jack->nid) {
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if (!jack->kctl)
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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
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if (jack->jack)
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snd_jack_report(jack->jack,
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state ? jack->type : 0);
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#endif
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}
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync);
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#ifdef CONFIG_SND_HDA_INPUT_JACK
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/* guess the jack type from the pin-config */
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static int get_input_jack_type(struct hda_codec *codec, hda_nid_t nid)
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{
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unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid);
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switch (get_defcfg_device(def_conf)) {
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case AC_JACK_LINE_OUT:
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case AC_JACK_SPEAKER:
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return SND_JACK_LINEOUT;
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case AC_JACK_HP_OUT:
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return SND_JACK_HEADPHONE;
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case AC_JACK_SPDIF_OUT:
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case AC_JACK_DIG_OTHER_OUT:
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return SND_JACK_AVOUT;
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case AC_JACK_MIC_IN:
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return SND_JACK_MICROPHONE;
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default:
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return SND_JACK_LINEIN;
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}
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}
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static void hda_free_jack_priv(struct snd_jack *jack)
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{
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struct hda_jack_tbl *jacks = jack->private_data;
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jacks->nid = 0;
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jacks->jack = NULL;
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}
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#endif
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/**
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* snd_hda_jack_add_kctl - Add a kctl for the given pin
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*
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* This assigns a jack-detection kctl to the given pin. The kcontrol
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* will have the given name and index.
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*/
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static int __snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
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const char *name, int idx, bool phantom_jack)
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{
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struct hda_jack_tbl *jack;
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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)
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return 0;
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if (jack->kctl)
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return 0; /* already created */
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kctl = snd_kctl_jack_new(name, idx, codec);
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if (!kctl)
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return -ENOMEM;
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err = snd_hda_ctl_add(codec, nid, kctl);
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if (err < 0)
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return err;
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jack->kctl = kctl;
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jack->phantom_jack = !!phantom_jack;
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state = snd_hda_jack_detect(codec, nid);
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snd_kctl_jack_report(codec->bus->card, kctl, state);
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#ifdef CONFIG_SND_HDA_INPUT_JACK
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if (!phantom_jack) {
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jack->type = get_input_jack_type(codec, nid);
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err = snd_jack_new(codec->bus->card, name, jack->type,
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&jack->jack);
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if (err < 0)
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return err;
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jack->jack->private_data = jack;
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jack->jack->private_free = hda_free_jack_priv;
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snd_jack_report(jack->jack, state ? jack->type : 0);
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}
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#endif
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return 0;
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}
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int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
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const char *name, int idx)
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{
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return __snd_hda_jack_add_kctl(codec, nid, name, idx, false);
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl);
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/* get the unique index number for the given kctl name */
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static int get_unique_index(struct hda_codec *codec, const char *name, int idx)
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{
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struct hda_jack_tbl *jack;
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int i, len = strlen(name);
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again:
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jack = codec->jacktbl.list;
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for (i = 0; i < codec->jacktbl.used; i++, jack++) {
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/* jack->kctl.id contains "XXX Jack" name string with index */
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if (jack->kctl &&
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!strncmp(name, jack->kctl->id.name, len) &&
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!strcmp(" Jack", jack->kctl->id.name + len) &&
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jack->kctl->id.index == idx) {
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idx++;
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goto again;
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}
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}
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return idx;
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}
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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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{
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unsigned int def_conf, conn;
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char name[44];
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int idx, err;
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bool phantom_jack;
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if (!nid)
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return 0;
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def_conf = snd_hda_codec_get_pincfg(codec, nid);
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conn = get_defcfg_connect(def_conf);
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if (conn == AC_JACK_PORT_NONE)
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return 0;
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phantom_jack = (conn != AC_JACK_PORT_COMPLEX) ||
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!is_jack_detectable(codec, nid);
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snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx);
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if (phantom_jack)
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/* Example final name: "Internal Mic Phantom Jack" */
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strncat(name, " Phantom", sizeof(name) - strlen(name) - 1);
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idx = get_unique_index(codec, name, idx);
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err = __snd_hda_jack_add_kctl(codec, nid, name, idx, phantom_jack);
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if (err < 0)
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return err;
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if (!phantom_jack)
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return snd_hda_jack_detect_enable(codec, nid, 0);
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return 0;
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}
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/**
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* snd_hda_jack_add_kctls - Add kctls for all pins included in the given pincfg
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*/
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int snd_hda_jack_add_kctls(struct hda_codec *codec,
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const struct auto_pin_cfg *cfg)
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{
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const hda_nid_t *p;
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int i, err;
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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)
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return err;
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}
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for (i = 0, p = cfg->hp_pins; i < cfg->hp_outs; i++, p++) {
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if (*p == *cfg->line_out_pins) /* might be duplicated */
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break;
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err = add_jack_kctl(codec, *p, cfg);
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if (err < 0)
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return err;
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}
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for (i = 0, p = cfg->speaker_pins; i < cfg->speaker_outs; i++, p++) {
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if (*p == *cfg->line_out_pins) /* might be duplicated */
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break;
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err = add_jack_kctl(codec, *p, cfg);
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if (err < 0)
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return err;
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}
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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)
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return err;
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}
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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)
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return err;
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}
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err = add_jack_kctl(codec, cfg->dig_in_pin, cfg);
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if (err < 0)
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return err;
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err = add_jack_kctl(codec, cfg->mono_out_pin, cfg);
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if (err < 0)
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return err;
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return 0;
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}
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EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls);
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static void call_jack_callback(struct hda_codec *codec,
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struct hda_jack_tbl *jack)
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{
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if (jack->callback)
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jack->callback(codec, jack);
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if (jack->gated_jack) {
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struct hda_jack_tbl *gated =
|
|
snd_hda_jack_tbl_get(codec, jack->gated_jack);
|
|
if (gated && gated->callback)
|
|
gated->callback(codec, gated);
|
|
}
|
|
}
|
|
|
|
void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)
|
|
{
|
|
struct hda_jack_tbl *event;
|
|
int tag = (res >> AC_UNSOL_RES_TAG_SHIFT) & 0x7f;
|
|
|
|
event = snd_hda_jack_tbl_get_from_tag(codec, tag);
|
|
if (!event)
|
|
return;
|
|
event->jack_dirty = 1;
|
|
|
|
call_jack_callback(codec, event);
|
|
snd_hda_jack_report_sync(codec);
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_jack_unsol_event);
|
|
|
|
void snd_hda_jack_poll_all(struct hda_codec *codec)
|
|
{
|
|
struct hda_jack_tbl *jack = codec->jacktbl.list;
|
|
int i, changes = 0;
|
|
|
|
for (i = 0; i < codec->jacktbl.used; i++, jack++) {
|
|
unsigned int old_sense;
|
|
if (!jack->nid || !jack->jack_dirty || jack->phantom_jack)
|
|
continue;
|
|
old_sense = get_jack_plug_state(jack->pin_sense);
|
|
jack_detect_update(codec, jack);
|
|
if (old_sense == get_jack_plug_state(jack->pin_sense))
|
|
continue;
|
|
changes = 1;
|
|
call_jack_callback(codec, jack);
|
|
}
|
|
if (changes)
|
|
snd_hda_jack_report_sync(codec);
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_jack_poll_all);
|
|
|