576 lines
15 KiB
C
Executable file
576 lines
15 KiB
C
Executable file
/*
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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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/**
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* is_jack_detectable - Check whether the given pin is jack-detectable
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* @codec: the HDA codec
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* @nid: pin NID
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*
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* Check whether the given pin is capable to report the jack detection.
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* The jack detection might not work by various reasons, e.g. the jack
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* detection is prohibited in the codec level, the pin config has
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* AC_DEFCFG_MISC_NO_PRESENCE bit, no unsol support, etc.
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*/
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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_GPL(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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* @codec: the HDA codec
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* @nid: pin NID to refer to
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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_GPL(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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* @codec: the HDA codec
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* @tag: tag value to refer to
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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_GPL(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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* @codec: the HDA codec
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* @nid: pin NID to assign
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*/
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static 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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void snd_hda_jack_tbl_clear(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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struct hda_jack_callback *cb, *next;
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/* free jack instances manually when clearing/reconfiguring */
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if (!codec->bus->shutdown && jack->jack)
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snd_device_free(codec->card, jack->jack);
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for (cb = jack->callback; cb; cb = next) {
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next = cb->next;
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kfree(cb);
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}
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}
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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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* @codec: the HDA codec
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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_GPL(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_GPL(snd_hda_pin_sense);
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/**
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* snd_hda_jack_detect_state - 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, as either
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* HDA_JACK_NOT_PRESENT, HDA_JACK_PRESENT or HDA_JACK_PHANTOM.
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*/
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int snd_hda_jack_detect_state(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 && jack->phantom_jack)
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return HDA_JACK_PHANTOM;
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else if (snd_hda_pin_sense(codec, nid) & AC_PINSENSE_PRESENCE)
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return HDA_JACK_PRESENT;
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else
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return HDA_JACK_NOT_PRESENT;
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}
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EXPORT_SYMBOL_GPL(snd_hda_jack_detect_state);
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/**
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* snd_hda_jack_detect_enable - enable the jack-detection
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* @codec: the HDA codec
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* @nid: pin NID to enable
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* @func: callback function to register
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*
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* In the case of error, the return value will be a pointer embedded with
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* errno. Check and handle the return value appropriately with standard
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* macros such as @IS_ERR() and @PTR_ERR().
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*/
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struct hda_jack_callback *
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snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
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hda_jack_callback_fn func)
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{
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struct hda_jack_tbl *jack;
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struct hda_jack_callback *callback = NULL;
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int err;
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jack = snd_hda_jack_tbl_new(codec, nid);
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if (!jack)
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return ERR_PTR(-ENOMEM);
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if (func) {
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callback = kzalloc(sizeof(*callback), GFP_KERNEL);
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if (!callback)
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return ERR_PTR(-ENOMEM);
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callback->func = func;
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callback->nid = jack->nid;
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callback->next = jack->callback;
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jack->callback = callback;
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}
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if (jack->jack_detect)
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return callback; /* already registered */
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jack->jack_detect = 1;
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if (codec->jackpoll_interval > 0)
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return callback; /* No unsol if we're polling instead */
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err = 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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if (err < 0)
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return ERR_PTR(err);
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return callback;
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}
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EXPORT_SYMBOL_GPL(snd_hda_jack_detect_enable_callback);
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/**
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* snd_hda_jack_detect_enable - Enable the jack detection on the given pin
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* @codec: the HDA codec
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* @nid: pin NID to enable jack detection
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*
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* Enable the jack detection with the default callback. Returns zero if
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* successful or a negative error code.
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*/
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int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid)
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{
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return PTR_ERR_OR_ZERO(snd_hda_jack_detect_enable_callback(codec, nid, NULL));
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}
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EXPORT_SYMBOL_GPL(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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* @codec: the HDA codec
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* @gated_nid: gated pin NID
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* @gating_nid: gating pin NID
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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_new(codec, gated_nid);
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struct hda_jack_tbl *gating = snd_hda_jack_tbl_new(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_GPL(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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* @codec: the HDA codec
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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->jack || jack->block_report)
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continue;
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state = get_jack_plug_state(jack->pin_sense);
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snd_jack_report(jack->jack,
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state ? jack->type : 0);
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}
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}
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EXPORT_SYMBOL_GPL(snd_hda_jack_report_sync);
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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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/**
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* snd_hda_jack_add_kctl - Add a kctl for the given pin
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* @codec: the HDA codec
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* @nid: pin NID to assign
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* @name: string name for the jack
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* @phantom_jack: flag to deal as a phantom jack
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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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int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
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const char *name, bool phantom_jack)
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{
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struct hda_jack_tbl *jack;
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int err, state, type;
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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->jack)
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return 0; /* already created */
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type = get_input_jack_type(codec, nid);
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err = snd_jack_new(codec->card, name, type,
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&jack->jack, true, phantom_jack);
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if (err < 0)
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return err;
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jack->phantom_jack = !!phantom_jack;
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jack->type = type;
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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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state = snd_hda_jack_detect(codec, nid);
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snd_jack_report(jack->jack, state ? jack->type : 0);
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return 0;
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}
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EXPORT_SYMBOL_GPL(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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const char *base_name)
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{
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unsigned int def_conf, conn;
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char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
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int 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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if (base_name)
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strlcpy(name, base_name, sizeof(name));
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else
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snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), NULL);
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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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err = snd_hda_jack_add_kctl(codec, nid, name, 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);
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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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* @codec: the HDA codec
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* @cfg: pin config table to parse
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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; i < cfg->num_inputs; i++) {
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/* If we have headphone mics; make sure they get the right name
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before grabbed by output pins */
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if (cfg->inputs[i].is_headphone_mic) {
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if (auto_cfg_hp_outs(cfg) == 1)
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err = add_jack_kctl(codec, auto_cfg_hp_pins(cfg)[0],
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cfg, "Headphone Mic");
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else
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err = add_jack_kctl(codec, cfg->inputs[i].pin,
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cfg, "Headphone Mic");
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} else
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err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg,
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NULL);
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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->line_out_pins; i < cfg->line_outs; i++, p++) {
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err = add_jack_kctl(codec, *p, cfg, NULL);
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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 */
|
|
break;
|
|
err = add_jack_kctl(codec, *p, cfg, NULL);
|
|
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;
|
|
err = add_jack_kctl(codec, *p, cfg, NULL);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
for (i = 0, p = cfg->dig_out_pins; i < cfg->dig_outs; i++, p++) {
|
|
err = add_jack_kctl(codec, *p, cfg, NULL);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
err = add_jack_kctl(codec, cfg->dig_in_pin, cfg, NULL);
|
|
if (err < 0)
|
|
return err;
|
|
err = add_jack_kctl(codec, cfg->mono_out_pin, cfg, NULL);
|
|
if (err < 0)
|
|
return err;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(snd_hda_jack_add_kctls);
|
|
|
|
static void call_jack_callback(struct hda_codec *codec,
|
|
struct hda_jack_tbl *jack)
|
|
{
|
|
struct hda_jack_callback *cb;
|
|
|
|
for (cb = jack->callback; cb; cb = cb->next)
|
|
cb->func(codec, cb);
|
|
if (jack->gated_jack) {
|
|
struct hda_jack_tbl *gated =
|
|
snd_hda_jack_tbl_get(codec, jack->gated_jack);
|
|
if (gated) {
|
|
for (cb = gated->callback; cb; cb = cb->next)
|
|
cb->func(codec, cb);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* snd_hda_jack_unsol_event - Handle an unsolicited event
|
|
* @codec: the HDA codec
|
|
* @res: the unsolicited event data
|
|
*/
|
|
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_GPL(snd_hda_jack_unsol_event);
|
|
|
|
/**
|
|
* snd_hda_jack_poll_all - Poll all jacks
|
|
* @codec: the HDA codec
|
|
*
|
|
* Poll all detectable jacks with dirty flag, update the status, call
|
|
* callbacks and call snd_hda_jack_report_sync() if any changes are found.
|
|
*/
|
|
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_GPL(snd_hda_jack_poll_all);
|
|
|