Loading...
1/*
2 * Jack-detection handling for HD-audio
3 *
4 * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
5 *
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.
10 */
11
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"
21#include "hda_jack.h"
22
23bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid)
24{
25 if (codec->no_jack_detect)
26 return false;
27 if (!(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_PRES_DETECT))
28 return false;
29 if (!codec->ignore_misc_bit &&
30 (get_defcfg_misc(snd_hda_codec_get_pincfg(codec, nid)) &
31 AC_DEFCFG_MISC_NO_PRESENCE))
32 return false;
33 if (!(get_wcaps(codec, nid) & AC_WCAP_UNSOL_CAP))
34 return false;
35 return true;
36}
37EXPORT_SYMBOL_HDA(is_jack_detectable);
38
39/* execute pin sense measurement */
40static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid)
41{
42 u32 pincap;
43
44 if (!codec->no_trigger_sense) {
45 pincap = snd_hda_query_pin_caps(codec, nid);
46 if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
47 snd_hda_codec_read(codec, nid, 0,
48 AC_VERB_SET_PIN_SENSE, 0);
49 }
50 return snd_hda_codec_read(codec, nid, 0,
51 AC_VERB_GET_PIN_SENSE, 0);
52}
53
54/**
55 * snd_hda_jack_tbl_get - query the jack-table entry for the given NID
56 */
57struct hda_jack_tbl *
58snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
59{
60 struct hda_jack_tbl *jack = codec->jacktbl.list;
61 int i;
62
63 if (!nid || !jack)
64 return NULL;
65 for (i = 0; i < codec->jacktbl.used; i++, jack++)
66 if (jack->nid == nid)
67 return jack;
68 return NULL;
69}
70EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get);
71
72/**
73 * snd_hda_jack_tbl_get_from_tag - query the jack-table entry for the given tag
74 */
75struct hda_jack_tbl *
76snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag)
77{
78 struct hda_jack_tbl *jack = codec->jacktbl.list;
79 int i;
80
81 if (!tag || !jack)
82 return NULL;
83 for (i = 0; i < codec->jacktbl.used; i++, jack++)
84 if (jack->tag == tag)
85 return jack;
86 return NULL;
87}
88EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get_from_tag);
89
90/**
91 * snd_hda_jack_tbl_new - create a jack-table entry for the given NID
92 */
93struct hda_jack_tbl *
94snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid)
95{
96 struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
97 if (jack)
98 return jack;
99 snd_array_init(&codec->jacktbl, sizeof(*jack), 16);
100 jack = snd_array_new(&codec->jacktbl);
101 if (!jack)
102 return NULL;
103 jack->nid = nid;
104 jack->jack_dirty = 1;
105 jack->tag = codec->jacktbl.used;
106 return jack;
107}
108EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_new);
109
110void snd_hda_jack_tbl_clear(struct hda_codec *codec)
111{
112#ifdef CONFIG_SND_HDA_INPUT_JACK
113 /* free jack instances manually when clearing/reconfiguring */
114 if (!codec->bus->shutdown && codec->jacktbl.list) {
115 struct hda_jack_tbl *jack = codec->jacktbl.list;
116 int i;
117 for (i = 0; i < codec->jacktbl.used; i++, jack++) {
118 if (jack->jack)
119 snd_device_free(codec->bus->card, jack->jack);
120 }
121 }
122#endif
123 snd_array_free(&codec->jacktbl);
124}
125
126/* update the cached value and notification flag if needed */
127static void jack_detect_update(struct hda_codec *codec,
128 struct hda_jack_tbl *jack)
129{
130 if (jack->jack_dirty || !jack->jack_detect) {
131 jack->pin_sense = read_pin_sense(codec, jack->nid);
132 jack->jack_dirty = 0;
133 }
134}
135
136/**
137 * snd_hda_set_dirty_all - Mark all the cached as dirty
138 *
139 * This function sets the dirty flag to all entries of jack table.
140 * It's called from the resume path in hda_codec.c.
141 */
142void snd_hda_jack_set_dirty_all(struct hda_codec *codec)
143{
144 struct hda_jack_tbl *jack = codec->jacktbl.list;
145 int i;
146
147 for (i = 0; i < codec->jacktbl.used; i++, jack++)
148 if (jack->nid)
149 jack->jack_dirty = 1;
150}
151EXPORT_SYMBOL_HDA(snd_hda_jack_set_dirty_all);
152
153/**
154 * snd_hda_pin_sense - execute pin sense measurement
155 * @codec: the CODEC to sense
156 * @nid: the pin NID to sense
157 *
158 * Execute necessary pin sense measurement and return its Presence Detect,
159 * Impedance, ELD Valid etc. status bits.
160 */
161u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
162{
163 struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
164 if (jack) {
165 jack_detect_update(codec, jack);
166 return jack->pin_sense;
167 }
168 return read_pin_sense(codec, nid);
169}
170EXPORT_SYMBOL_HDA(snd_hda_pin_sense);
171
172#define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE)
173
174/**
175 * snd_hda_jack_detect - query pin Presence Detect status
176 * @codec: the CODEC to sense
177 * @nid: the pin NID to sense
178 *
179 * Query and return the pin's Presence Detect status.
180 */
181int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
182{
183 u32 sense = snd_hda_pin_sense(codec, nid);
184 return get_jack_plug_state(sense);
185}
186EXPORT_SYMBOL_HDA(snd_hda_jack_detect);
187
188/**
189 * snd_hda_jack_detect_enable - enable the jack-detection
190 */
191int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
192 unsigned char action)
193{
194 struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid);
195 if (!jack)
196 return -ENOMEM;
197 if (jack->jack_detect)
198 return 0; /* already registered */
199 jack->jack_detect = 1;
200 if (action)
201 jack->action = action;
202 return snd_hda_codec_write_cache(codec, nid, 0,
203 AC_VERB_SET_UNSOLICITED_ENABLE,
204 AC_USRSP_EN | jack->tag);
205}
206EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);
207
208/**
209 * snd_hda_jack_report_sync - sync the states of all jacks and report if changed
210 */
211void snd_hda_jack_report_sync(struct hda_codec *codec)
212{
213 struct hda_jack_tbl *jack = codec->jacktbl.list;
214 int i, state;
215
216 for (i = 0; i < codec->jacktbl.used; i++, jack++)
217 if (jack->nid) {
218 jack_detect_update(codec, jack);
219 if (!jack->kctl)
220 continue;
221 state = get_jack_plug_state(jack->pin_sense);
222 snd_kctl_jack_report(codec->bus->card, jack->kctl, state);
223#ifdef CONFIG_SND_HDA_INPUT_JACK
224 if (jack->jack)
225 snd_jack_report(jack->jack,
226 state ? jack->type : 0);
227#endif
228 }
229}
230EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync);
231
232#ifdef CONFIG_SND_HDA_INPUT_JACK
233/* guess the jack type from the pin-config */
234static int get_input_jack_type(struct hda_codec *codec, hda_nid_t nid)
235{
236 unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid);
237 switch (get_defcfg_device(def_conf)) {
238 case AC_JACK_LINE_OUT:
239 case AC_JACK_SPEAKER:
240 return SND_JACK_LINEOUT;
241 case AC_JACK_HP_OUT:
242 return SND_JACK_HEADPHONE;
243 case AC_JACK_SPDIF_OUT:
244 case AC_JACK_DIG_OTHER_OUT:
245 return SND_JACK_AVOUT;
246 case AC_JACK_MIC_IN:
247 return SND_JACK_MICROPHONE;
248 default:
249 return SND_JACK_LINEIN;
250 }
251}
252
253static void hda_free_jack_priv(struct snd_jack *jack)
254{
255 struct hda_jack_tbl *jacks = jack->private_data;
256 jacks->nid = 0;
257 jacks->jack = NULL;
258}
259#endif
260
261/**
262 * snd_hda_jack_add_kctl - Add a kctl for the given pin
263 *
264 * This assigns a jack-detection kctl to the given pin. The kcontrol
265 * will have the given name and index.
266 */
267int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
268 const char *name, int idx)
269{
270 struct hda_jack_tbl *jack;
271 struct snd_kcontrol *kctl;
272 int err, state;
273
274 jack = snd_hda_jack_tbl_new(codec, nid);
275 if (!jack)
276 return 0;
277 if (jack->kctl)
278 return 0; /* already created */
279 kctl = snd_kctl_jack_new(name, idx, codec);
280 if (!kctl)
281 return -ENOMEM;
282 err = snd_hda_ctl_add(codec, nid, kctl);
283 if (err < 0)
284 return err;
285 jack->kctl = kctl;
286 state = snd_hda_jack_detect(codec, nid);
287 snd_kctl_jack_report(codec->bus->card, kctl, state);
288#ifdef CONFIG_SND_HDA_INPUT_JACK
289 jack->type = get_input_jack_type(codec, nid);
290 err = snd_jack_new(codec->bus->card, name, jack->type, &jack->jack);
291 if (err < 0)
292 return err;
293 jack->jack->private_data = jack;
294 jack->jack->private_free = hda_free_jack_priv;
295 snd_jack_report(jack->jack, state ? jack->type : 0);
296#endif
297 return 0;
298}
299EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl);
300
301static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
302 const struct auto_pin_cfg *cfg,
303 char *lastname, int *lastidx)
304{
305 unsigned int def_conf, conn;
306 char name[44];
307 int idx, err;
308
309 if (!nid)
310 return 0;
311 if (!is_jack_detectable(codec, nid))
312 return 0;
313 def_conf = snd_hda_codec_get_pincfg(codec, nid);
314 conn = get_defcfg_connect(def_conf);
315 if (conn != AC_JACK_PORT_COMPLEX)
316 return 0;
317
318 snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx);
319 if (!strcmp(name, lastname) && idx == *lastidx)
320 idx++;
321 strncpy(lastname, name, 44);
322 *lastidx = idx;
323 err = snd_hda_jack_add_kctl(codec, nid, name, idx);
324 if (err < 0)
325 return err;
326 return snd_hda_jack_detect_enable(codec, nid, 0);
327}
328
329/**
330 * snd_hda_jack_add_kctls - Add kctls for all pins included in the given pincfg
331 */
332int snd_hda_jack_add_kctls(struct hda_codec *codec,
333 const struct auto_pin_cfg *cfg)
334{
335 const hda_nid_t *p;
336 int i, err, lastidx = 0;
337 char lastname[44] = "";
338
339 for (i = 0, p = cfg->line_out_pins; i < cfg->line_outs; i++, p++) {
340 err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
341 if (err < 0)
342 return err;
343 }
344 for (i = 0, p = cfg->hp_pins; i < cfg->hp_outs; i++, p++) {
345 if (*p == *cfg->line_out_pins) /* might be duplicated */
346 break;
347 err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
348 if (err < 0)
349 return err;
350 }
351 for (i = 0, p = cfg->speaker_pins; i < cfg->speaker_outs; i++, p++) {
352 if (*p == *cfg->line_out_pins) /* might be duplicated */
353 break;
354 err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
355 if (err < 0)
356 return err;
357 }
358 for (i = 0; i < cfg->num_inputs; i++) {
359 err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg, lastname, &lastidx);
360 if (err < 0)
361 return err;
362 }
363 for (i = 0, p = cfg->dig_out_pins; i < cfg->dig_outs; i++, p++) {
364 err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
365 if (err < 0)
366 return err;
367 }
368 err = add_jack_kctl(codec, cfg->dig_in_pin, cfg, lastname, &lastidx);
369 if (err < 0)
370 return err;
371 err = add_jack_kctl(codec, cfg->mono_out_pin, cfg, lastname, &lastidx);
372 if (err < 0)
373 return err;
374 return 0;
375}
376EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls);