diff options
Diffstat (limited to 'sound/pci/hda/hda_jack.c')
| -rw-r--r-- | sound/pci/hda/hda_jack.c | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c new file mode 100644 index 0000000..d8a35da --- /dev/null +++ b/sound/pci/hda/hda_jack.c @@ -0,0 +1,353 @@ +/* + * 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 <linux/export.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/jack.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_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); + +/** + * 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; + jack->tag = codec->jacktbl.used; + return jack; +} +EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_new); + +void snd_hda_jack_tbl_clear(struct hda_codec *codec) +{ +#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 + 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->jack_detect) { + 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); + +#define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE) + +/** + * 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 get_jack_plug_state(sense); +} +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 char action) +{ + struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid); + if (!jack) + return -ENOMEM; + if (jack->jack_detect) + return 0; /* already registered */ + jack->jack_detect = 1; + if (action) + jack->action = action; + return snd_hda_codec_write_cache(codec, nid, 0, + AC_VERB_SET_UNSOLICITED_ENABLE, + AC_USRSP_EN | jack->tag); +} +EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable); + +/** + * 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; + int i, state; + + for (i = 0; i < codec->jacktbl.used; i++, jack++) + if (jack->nid) { + jack_detect_update(codec, jack); + if (!jack->kctl) + continue; + state = get_jack_plug_state(jack->pin_sense); + snd_kctl_jack_report(codec->bus->card, jack->kctl, state); +#ifdef CONFIG_SND_HDA_INPUT_JACK + if (jack->jack) + snd_jack_report(jack->jack, + state ? jack->type : 0); +#endif + } +} +EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync); + +#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 + +/** + * 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; + int err, state; + + jack = snd_hda_jack_tbl_new(codec, nid); + if (!jack) + return 0; + if (jack->kctl) + return 0; /* already created */ + kctl = snd_kctl_jack_new(name, idx, codec); + if (!kctl) + return -ENOMEM; + err = snd_hda_ctl_add(codec, nid, kctl); + if (err < 0) + return err; + jack->kctl = kctl; + 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 + return 0; +} +EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl); + +static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid, + const struct auto_pin_cfg *cfg) +{ + unsigned int def_conf, conn; + char name[44]; + int idx, err; + + if (!nid) + return 0; + if (!is_jack_detectable(codec, nid)) + return 0; + def_conf = snd_hda_codec_get_pincfg(codec, nid); + conn = get_defcfg_connect(def_conf); + if (conn != AC_JACK_PORT_COMPLEX) + return 0; + + snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx); + err = snd_hda_jack_add_kctl(codec, nid, name, idx); + if (err < 0) + return err; + return snd_hda_jack_detect_enable(codec, nid, 0); +} + +/** + * snd_hda_jack_add_kctls - Add kctls for all pins included in the given pincfg + */ +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++) { + err = add_jack_kctl(codec, *p, cfg); + 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; + err = add_jack_kctl(codec, *p, cfg); + 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); + if (err < 0) + return err; + } + for (i = 0; i < cfg->num_inputs; i++) { + err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg); + 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); + if (err < 0) + return err; + } + err = add_jack_kctl(codec, cfg->dig_in_pin, cfg); + if (err < 0) + return err; + err = add_jack_kctl(codec, cfg->mono_out_pin, cfg); + if (err < 0) + return err; + return 0; +} +EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls); |