2 * Jack-detection handling for HD-audio
4 * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
6 * This driver is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/export.h>
15 #include <sound/core.h>
16 #include <sound/control.h>
17 #include <sound/jack.h>
18 #include "hda_codec.h"
19 #include "hda_local.h"
20 #include "hda_auto_parser.h"
23 bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
25 if (codec->no_jack_detect)
27 if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
29 if (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
30 AC_DEFCFG_MISC_NO_PRESENCE)
32 if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
36 EXPORT_SYMBOL_HDA(is_jack_detectable);
38 /* execute pin sense measurement */
39 static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid)
43 if (!codec->no_trigger_sense) {
44 pincap = snd_hda_query_pin_caps(codec, nid);
45 if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
46 snd_hda_codec_read(codec, nid, 0,
47 AC_VERB_SET_PIN_SENSE, 0);
49 return snd_hda_codec_read(codec, nid, 0,
50 AC_VERB_GET_PIN_SENSE, 0);
54 * snd_hda_jack_tbl_get - query the jack-table entry for the given NID
57 snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
59 struct hda_jack_tbl *jack = codec->jacktbl.list;
64 for (i = 0; i < codec->jacktbl.used; i++, jack++)
69 EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get);
72 * snd_hda_jack_tbl_get_from_tag - query the jack-table entry for the given tag
75 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag)
77 struct hda_jack_tbl *jack = codec->jacktbl.list;
82 for (i = 0; i < codec->jacktbl.used; i++, jack++)
87 EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get_from_tag);
90 * snd_hda_jack_tbl_new - create a jack-table entry for the given NID
93 snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid)
95 struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
98 snd_array_init(&codec->jacktbl, sizeof(*jack), 16);
99 jack = snd_array_new(&codec->jacktbl);
103 jack->jack_dirty = 1;
104 jack->tag = codec->jacktbl.used;
107 EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_new);
109 void snd_hda_jack_tbl_clear(struct hda_codec *codec)
111 #ifdef CONFIG_SND_HDA_INPUT_JACK
112 /* free jack instances manually when clearing/reconfiguring */
113 if (!codec->bus->shutdown && codec->jacktbl.list) {
114 struct hda_jack_tbl *jack = codec->jacktbl.list;
116 for (i = 0; i < codec->jacktbl.used; i++, jack++) {
118 snd_device_free(codec->bus->card, jack->jack);
122 snd_array_free(&codec->jacktbl);
125 /* update the cached value and notification flag if needed */
126 static void jack_detect_update(struct hda_codec *codec,
127 struct hda_jack_tbl *jack)
129 if (!jack->jack_dirty)
132 if (jack->phantom_jack)
133 jack->pin_sense = AC_PINSENSE_PRESENCE;
135 jack->pin_sense = read_pin_sense(codec, jack->nid);
137 jack->jack_dirty = 0;
141 * snd_hda_set_dirty_all - Mark all the cached as dirty
143 * This function sets the dirty flag to all entries of jack table.
144 * It's called from the resume path in hda_codec.c.
146 void snd_hda_jack_set_dirty_all(struct hda_codec *codec)
148 struct hda_jack_tbl *jack = codec->jacktbl.list;
151 for (i = 0; i < codec->jacktbl.used; i++, jack++)
153 jack->jack_dirty = 1;
155 EXPORT_SYMBOL_HDA(snd_hda_jack_set_dirty_all);
158 * snd_hda_pin_sense - execute pin sense measurement
159 * @codec: the CODEC to sense
160 * @nid: the pin NID to sense
162 * Execute necessary pin sense measurement and return its Presence Detect,
163 * Impedance, ELD Valid etc. status bits.
165 u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
167 struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
169 jack_detect_update(codec, jack);
170 return jack->pin_sense;
172 return read_pin_sense(codec, nid);
174 EXPORT_SYMBOL_HDA(snd_hda_pin_sense);
176 #define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE)
179 * snd_hda_jack_detect - query pin Presence Detect status
180 * @codec: the CODEC to sense
181 * @nid: the pin NID to sense
183 * Query and return the pin's Presence Detect status.
185 int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
187 u32 sense = snd_hda_pin_sense(codec, nid);
188 return get_jack_plug_state(sense);
190 EXPORT_SYMBOL_HDA(snd_hda_jack_detect);
193 * snd_hda_jack_detect_enable - enable the jack-detection
195 int snd_hda_jack_detect_enable_callback(struct hda_codec *codec, hda_nid_t nid,
196 unsigned char action,
197 hda_jack_callback cb)
199 struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid);
202 if (jack->jack_detect)
203 return 0; /* already registered */
204 jack->jack_detect = 1;
206 jack->action = action;
209 return snd_hda_codec_write_cache(codec, nid, 0,
210 AC_VERB_SET_UNSOLICITED_ENABLE,
211 AC_USRSP_EN | jack->tag);
213 EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable_callback);
215 int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
216 unsigned char action)
218 return snd_hda_jack_detect_enable_callback(codec, nid, action, NULL);
220 EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);
223 * snd_hda_jack_report_sync - sync the states of all jacks and report if changed
225 void snd_hda_jack_report_sync(struct hda_codec *codec)
227 struct hda_jack_tbl *jack = codec->jacktbl.list;
230 for (i = 0; i < codec->jacktbl.used; i++, jack++)
232 jack_detect_update(codec, jack);
235 state = get_jack_plug_state(jack->pin_sense);
236 snd_kctl_jack_report(codec->bus->card, jack->kctl, state);
237 #ifdef CONFIG_SND_HDA_INPUT_JACK
239 snd_jack_report(jack->jack,
240 state ? jack->type : 0);
244 EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync);
246 #ifdef CONFIG_SND_HDA_INPUT_JACK
247 /* guess the jack type from the pin-config */
248 static int get_input_jack_type(struct hda_codec *codec, hda_nid_t nid)
250 unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid);
251 switch (get_defcfg_device(def_conf)) {
252 case AC_JACK_LINE_OUT:
253 case AC_JACK_SPEAKER:
254 return SND_JACK_LINEOUT;
256 return SND_JACK_HEADPHONE;
257 case AC_JACK_SPDIF_OUT:
258 case AC_JACK_DIG_OTHER_OUT:
259 return SND_JACK_AVOUT;
261 return SND_JACK_MICROPHONE;
263 return SND_JACK_LINEIN;
267 static void hda_free_jack_priv(struct snd_jack *jack)
269 struct hda_jack_tbl *jacks = jack->private_data;
276 * snd_hda_jack_add_kctl - Add a kctl for the given pin
278 * This assigns a jack-detection kctl to the given pin. The kcontrol
279 * will have the given name and index.
281 static int __snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
282 const char *name, int idx, bool phantom_jack)
284 struct hda_jack_tbl *jack;
285 struct snd_kcontrol *kctl;
288 jack = snd_hda_jack_tbl_new(codec, nid);
292 return 0; /* already created */
293 kctl = snd_kctl_jack_new(name, idx, codec);
296 err = snd_hda_ctl_add(codec, nid, kctl);
300 jack->phantom_jack = !!phantom_jack;
302 state = snd_hda_jack_detect(codec, nid);
303 snd_kctl_jack_report(codec->bus->card, kctl, state);
304 #ifdef CONFIG_SND_HDA_INPUT_JACK
306 jack->type = get_input_jack_type(codec, nid);
307 err = snd_jack_new(codec->bus->card, name, jack->type,
311 jack->jack->private_data = jack;
312 jack->jack->private_free = hda_free_jack_priv;
313 snd_jack_report(jack->jack, state ? jack->type : 0);
319 int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
320 const char *name, int idx)
322 return __snd_hda_jack_add_kctl(codec, nid, name, idx, false);
324 EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl);
326 /* get the unique index number for the given kctl name */
327 static int get_unique_index(struct hda_codec *codec, const char *name, int idx)
329 struct hda_jack_tbl *jack;
330 int i, len = strlen(name);
332 jack = codec->jacktbl.list;
333 for (i = 0; i < codec->jacktbl.used; i++, jack++) {
334 /* jack->kctl.id contains "XXX Jack" name string with index */
336 !strncmp(name, jack->kctl->id.name, len) &&
337 !strcmp(" Jack", jack->kctl->id.name + len) &&
338 jack->kctl->id.index == idx) {
346 static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
347 const struct auto_pin_cfg *cfg)
349 unsigned int def_conf, conn;
356 def_conf = snd_hda_codec_get_pincfg(codec, nid);
357 conn = get_defcfg_connect(def_conf);
358 if (conn == AC_JACK_PORT_NONE)
360 phantom_jack = (conn != AC_JACK_PORT_COMPLEX) ||
361 !is_jack_detectable(codec, nid);
363 snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx);
365 /* Example final name: "Internal Mic Phantom Jack" */
366 strncat(name, " Phantom", sizeof(name) - strlen(name) - 1);
367 idx = get_unique_index(codec, name, idx);
368 err = __snd_hda_jack_add_kctl(codec, nid, name, idx, phantom_jack);
373 return snd_hda_jack_detect_enable(codec, nid, 0);
378 * snd_hda_jack_add_kctls - Add kctls for all pins included in the given pincfg
380 int snd_hda_jack_add_kctls(struct hda_codec *codec,
381 const struct auto_pin_cfg *cfg)
386 for (i = 0, p = cfg->line_out_pins; i < cfg->line_outs; i++, p++) {
387 err = add_jack_kctl(codec, *p, cfg);
391 for (i = 0, p = cfg->hp_pins; i < cfg->hp_outs; i++, p++) {
392 if (*p == *cfg->line_out_pins) /* might be duplicated */
394 err = add_jack_kctl(codec, *p, cfg);
398 for (i = 0, p = cfg->speaker_pins; i < cfg->speaker_outs; i++, p++) {
399 if (*p == *cfg->line_out_pins) /* might be duplicated */
401 err = add_jack_kctl(codec, *p, cfg);
405 for (i = 0; i < cfg->num_inputs; i++) {
406 err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg);
410 for (i = 0, p = cfg->dig_out_pins; i < cfg->dig_outs; i++, p++) {
411 err = add_jack_kctl(codec, *p, cfg);
415 err = add_jack_kctl(codec, cfg->dig_in_pin, cfg);
418 err = add_jack_kctl(codec, cfg->mono_out_pin, cfg);
423 EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls);
425 void snd_hda_jack_unsol_event(struct hda_codec *codec, unsigned int res)
427 struct hda_jack_tbl *event;
428 int tag = (res >> AC_UNSOL_RES_TAG_SHIFT) & 0x7f;
430 event = snd_hda_jack_tbl_get_from_tag(codec, tag);
433 event->jack_dirty = 1;
436 event->callback(codec, event);
438 snd_hda_jack_report_sync(codec);
440 EXPORT_SYMBOL_HDA(snd_hda_jack_unsol_event);