This source file includes following definitions.
- dapm_assert_locked
- pop_wait
- __printf
- dapm_dirty_widget
- dapm_mark_dirty
- dapm_widget_invalidate_paths
- dapm_widget_invalidate_input_paths
- dapm_widget_invalidate_output_paths
- dapm_path_invalidate
- dapm_mark_endpoints_dirty
- dapm_cnew_widget
- dapm_kcontrol_data_alloc
- dapm_kcontrol_free
- dapm_kcontrol_get_wlist
- dapm_kcontrol_add_widget
- dapm_kcontrol_add_path
- dapm_kcontrol_is_powered
- dapm_kcontrol_get_path_list
- dapm_kcontrol_get_value
- dapm_kcontrol_set_value
- snd_soc_dapm_kcontrol_widget
- snd_soc_dapm_kcontrol_dapm
- dapm_reset
- soc_dapm_prefix
- soc_dapm_read
- soc_dapm_update_bits
- soc_dapm_test_bits
- soc_dapm_async_complete
- dapm_wcache_lookup
- dapm_wcache_update
- snd_soc_dapm_force_bias_level
- snd_soc_dapm_set_bias_level
- dapm_connect_mux
- dapm_set_mixer_path_status
- dapm_connect_mixer
- dapm_is_shared_kcontrol
- dapm_create_or_share_kcontrol
- dapm_new_mixer
- dapm_new_mux
- dapm_new_pga
- dapm_new_dai_link
- snd_soc_dapm_suspend_check
- dapm_widget_list_create
- invalidate_paths_ep
- is_connected_ep
- is_connected_output_ep
- is_connected_input_ep
- snd_soc_dapm_dai_get_connected_widgets
- dapm_regulator_event
- dapm_pinctrl_event
- dapm_clock_event
- dapm_widget_power_check
- dapm_generic_check_power
- dapm_supply_check_power
- dapm_always_on_check_power
- dapm_seq_compare
- dapm_seq_insert
- dapm_seq_check_event
- dapm_seq_run_coalesced
- dapm_seq_run
- dapm_widget_update
- dapm_pre_sequence_async
- dapm_post_sequence_async
- dapm_widget_set_peer_power
- dapm_widget_set_power
- dapm_power_one_widget
- dapm_idle_bias_off
- dapm_power_widgets
- dapm_widget_power_read_file
- dapm_bias_read_file
- snd_soc_dapm_debugfs_init
- dapm_debugfs_add_widget
- dapm_debugfs_cleanup
- snd_soc_dapm_debugfs_init
- dapm_debugfs_add_widget
- dapm_debugfs_cleanup
- soc_dapm_connect_path
- soc_dapm_mux_update_power
- snd_soc_dapm_mux_update_power
- soc_dapm_mixer_update_power
- snd_soc_dapm_mixer_update_power
- dapm_widget_show_component
- dapm_widget_show
- dapm_free_path
- snd_soc_dapm_free_widget
- snd_soc_dapm_reset_cache
- dapm_free_widgets
- dapm_find_widget
- snd_soc_dapm_set_pin
- snd_soc_dapm_sync_unlocked
- snd_soc_dapm_sync
- dapm_update_dai_chan
- dapm_update_dai_unlocked
- snd_soc_dapm_update_dai
- dapm_update_widget_flags
- snd_soc_dapm_check_dynamic_path
- snd_soc_dapm_add_path
- snd_soc_dapm_add_route
- snd_soc_dapm_del_route
- snd_soc_dapm_add_routes
- snd_soc_dapm_del_routes
- snd_soc_dapm_weak_route
- snd_soc_dapm_weak_routes
- snd_soc_dapm_new_widgets
- snd_soc_dapm_get_volsw
- snd_soc_dapm_put_volsw
- snd_soc_dapm_get_enum_double
- snd_soc_dapm_put_enum_double
- snd_soc_dapm_info_pin_switch
- snd_soc_dapm_get_pin_switch
- snd_soc_dapm_put_pin_switch
- snd_soc_dapm_new_control_unlocked
- snd_soc_dapm_new_control
- snd_soc_dapm_new_controls
- snd_soc_dai_link_event_pre_pmu
- snd_soc_dai_link_event
- snd_soc_dapm_dai_link_get
- snd_soc_dapm_dai_link_put
- snd_soc_dapm_free_kcontrol
- snd_soc_dapm_alloc_kcontrol
- snd_soc_dapm_new_dai
- snd_soc_dapm_new_dai_widgets
- snd_soc_dapm_link_dai_widgets
- dapm_connect_dai_link_widgets
- soc_dapm_dai_stream_event
- snd_soc_dapm_connect_dai_link_widgets
- soc_dapm_stream_event
- snd_soc_dapm_stream_event
- snd_soc_dapm_enable_pin_unlocked
- snd_soc_dapm_enable_pin
- snd_soc_dapm_force_enable_pin_unlocked
- snd_soc_dapm_force_enable_pin
- snd_soc_dapm_disable_pin_unlocked
- snd_soc_dapm_disable_pin
- snd_soc_dapm_nc_pin_unlocked
- snd_soc_dapm_nc_pin
- snd_soc_dapm_get_pin_status
- snd_soc_dapm_ignore_suspend
- snd_soc_dapm_free
- snd_soc_dapm_init
- soc_dapm_shutdown_dapm
- snd_soc_dapm_shutdown
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20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/async.h>
23 #include <linux/delay.h>
24 #include <linux/pm.h>
25 #include <linux/bitops.h>
26 #include <linux/platform_device.h>
27 #include <linux/jiffies.h>
28 #include <linux/debugfs.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/pinctrl/consumer.h>
32 #include <linux/clk.h>
33 #include <linux/slab.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38 #include <sound/initval.h>
39
40 #include <trace/events/asoc.h>
41
42 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
43
44 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
45 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
46
47 #define snd_soc_dapm_for_each_direction(dir) \
48 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
49 (dir)++)
50
51 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
52 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
53 const char *control,
54 int (*connected)(struct snd_soc_dapm_widget *source,
55 struct snd_soc_dapm_widget *sink));
56
57 struct snd_soc_dapm_widget *
58 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
59 const struct snd_soc_dapm_widget *widget);
60
61 struct snd_soc_dapm_widget *
62 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
63 const struct snd_soc_dapm_widget *widget);
64
65
66 static int dapm_up_seq[] = {
67 [snd_soc_dapm_pre] = 1,
68 [snd_soc_dapm_regulator_supply] = 2,
69 [snd_soc_dapm_pinctrl] = 2,
70 [snd_soc_dapm_clock_supply] = 2,
71 [snd_soc_dapm_supply] = 3,
72 [snd_soc_dapm_micbias] = 4,
73 [snd_soc_dapm_vmid] = 4,
74 [snd_soc_dapm_dai_link] = 3,
75 [snd_soc_dapm_dai_in] = 5,
76 [snd_soc_dapm_dai_out] = 5,
77 [snd_soc_dapm_aif_in] = 5,
78 [snd_soc_dapm_aif_out] = 5,
79 [snd_soc_dapm_mic] = 6,
80 [snd_soc_dapm_siggen] = 6,
81 [snd_soc_dapm_input] = 6,
82 [snd_soc_dapm_output] = 6,
83 [snd_soc_dapm_mux] = 7,
84 [snd_soc_dapm_demux] = 7,
85 [snd_soc_dapm_dac] = 8,
86 [snd_soc_dapm_switch] = 9,
87 [snd_soc_dapm_mixer] = 9,
88 [snd_soc_dapm_mixer_named_ctl] = 9,
89 [snd_soc_dapm_pga] = 10,
90 [snd_soc_dapm_buffer] = 10,
91 [snd_soc_dapm_scheduler] = 10,
92 [snd_soc_dapm_effect] = 10,
93 [snd_soc_dapm_src] = 10,
94 [snd_soc_dapm_asrc] = 10,
95 [snd_soc_dapm_encoder] = 10,
96 [snd_soc_dapm_decoder] = 10,
97 [snd_soc_dapm_adc] = 11,
98 [snd_soc_dapm_out_drv] = 12,
99 [snd_soc_dapm_hp] = 12,
100 [snd_soc_dapm_spk] = 12,
101 [snd_soc_dapm_line] = 12,
102 [snd_soc_dapm_sink] = 12,
103 [snd_soc_dapm_kcontrol] = 13,
104 [snd_soc_dapm_post] = 14,
105 };
106
107 static int dapm_down_seq[] = {
108 [snd_soc_dapm_pre] = 1,
109 [snd_soc_dapm_kcontrol] = 2,
110 [snd_soc_dapm_adc] = 3,
111 [snd_soc_dapm_hp] = 4,
112 [snd_soc_dapm_spk] = 4,
113 [snd_soc_dapm_line] = 4,
114 [snd_soc_dapm_out_drv] = 4,
115 [snd_soc_dapm_sink] = 4,
116 [snd_soc_dapm_pga] = 5,
117 [snd_soc_dapm_buffer] = 5,
118 [snd_soc_dapm_scheduler] = 5,
119 [snd_soc_dapm_effect] = 5,
120 [snd_soc_dapm_src] = 5,
121 [snd_soc_dapm_asrc] = 5,
122 [snd_soc_dapm_encoder] = 5,
123 [snd_soc_dapm_decoder] = 5,
124 [snd_soc_dapm_switch] = 6,
125 [snd_soc_dapm_mixer_named_ctl] = 6,
126 [snd_soc_dapm_mixer] = 6,
127 [snd_soc_dapm_dac] = 7,
128 [snd_soc_dapm_mic] = 8,
129 [snd_soc_dapm_siggen] = 8,
130 [snd_soc_dapm_input] = 8,
131 [snd_soc_dapm_output] = 8,
132 [snd_soc_dapm_micbias] = 9,
133 [snd_soc_dapm_vmid] = 9,
134 [snd_soc_dapm_mux] = 10,
135 [snd_soc_dapm_demux] = 10,
136 [snd_soc_dapm_aif_in] = 11,
137 [snd_soc_dapm_aif_out] = 11,
138 [snd_soc_dapm_dai_in] = 11,
139 [snd_soc_dapm_dai_out] = 11,
140 [snd_soc_dapm_dai_link] = 12,
141 [snd_soc_dapm_supply] = 13,
142 [snd_soc_dapm_clock_supply] = 14,
143 [snd_soc_dapm_pinctrl] = 14,
144 [snd_soc_dapm_regulator_supply] = 14,
145 [snd_soc_dapm_post] = 15,
146 };
147
148 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
149 {
150 if (dapm->card && dapm->card->instantiated)
151 lockdep_assert_held(&dapm->card->dapm_mutex);
152 }
153
154 static void pop_wait(u32 pop_time)
155 {
156 if (pop_time)
157 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
158 }
159
160 __printf(3, 4)
161 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
162 {
163 va_list args;
164 char *buf;
165
166 if (!pop_time)
167 return;
168
169 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
170 if (buf == NULL)
171 return;
172
173 va_start(args, fmt);
174 vsnprintf(buf, PAGE_SIZE, fmt, args);
175 dev_info(dev, "%s", buf);
176 va_end(args);
177
178 kfree(buf);
179 }
180
181 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
182 {
183 return !list_empty(&w->dirty);
184 }
185
186 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
187 {
188 dapm_assert_locked(w->dapm);
189
190 if (!dapm_dirty_widget(w)) {
191 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
192 w->name, reason);
193 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
194 }
195 }
196
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202
203
204 static __always_inline void dapm_widget_invalidate_paths(
205 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
206 {
207 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
208 struct snd_soc_dapm_widget *node;
209 struct snd_soc_dapm_path *p;
210 LIST_HEAD(list);
211
212 dapm_assert_locked(w->dapm);
213
214 if (w->endpoints[dir] == -1)
215 return;
216
217 list_add_tail(&w->work_list, &list);
218 w->endpoints[dir] = -1;
219
220 list_for_each_entry(w, &list, work_list) {
221 snd_soc_dapm_widget_for_each_path(w, dir, p) {
222 if (p->is_supply || p->weak || !p->connect)
223 continue;
224 node = p->node[rdir];
225 if (node->endpoints[dir] != -1) {
226 node->endpoints[dir] = -1;
227 list_add_tail(&node->work_list, &list);
228 }
229 }
230 }
231 }
232
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243
244
245 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
246 {
247 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
248 }
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260
261
262 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
263 {
264 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
265 }
266
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275
276
277
278 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
279 {
280
281
282
283
284 if (p->weak || p->is_supply)
285 return;
286
287
288
289
290
291
292
293 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
294 dapm_widget_invalidate_input_paths(p->sink);
295 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
296 dapm_widget_invalidate_output_paths(p->source);
297 }
298
299 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
300 {
301 struct snd_soc_dapm_widget *w;
302
303 mutex_lock(&card->dapm_mutex);
304
305 list_for_each_entry(w, &card->widgets, list) {
306 if (w->is_ep) {
307 dapm_mark_dirty(w, "Rechecking endpoints");
308 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
309 dapm_widget_invalidate_output_paths(w);
310 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
311 dapm_widget_invalidate_input_paths(w);
312 }
313 }
314
315 mutex_unlock(&card->dapm_mutex);
316 }
317 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
318
319
320 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
321 const struct snd_soc_dapm_widget *_widget)
322 {
323 struct snd_soc_dapm_widget *w;
324
325 w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
326 if (!w)
327 return NULL;
328
329
330
331
332
333 if (_widget->sname) {
334 w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
335 if (!w->sname) {
336 kfree(w);
337 return NULL;
338 }
339 }
340 return w;
341 }
342
343 struct dapm_kcontrol_data {
344 unsigned int value;
345 struct snd_soc_dapm_widget *widget;
346 struct list_head paths;
347 struct snd_soc_dapm_widget_list *wlist;
348 };
349
350 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
351 struct snd_kcontrol *kcontrol, const char *ctrl_name)
352 {
353 struct dapm_kcontrol_data *data;
354 struct soc_mixer_control *mc;
355 struct soc_enum *e;
356 const char *name;
357 int ret;
358
359 data = kzalloc(sizeof(*data), GFP_KERNEL);
360 if (!data)
361 return -ENOMEM;
362
363 INIT_LIST_HEAD(&data->paths);
364
365 switch (widget->id) {
366 case snd_soc_dapm_switch:
367 case snd_soc_dapm_mixer:
368 case snd_soc_dapm_mixer_named_ctl:
369 mc = (struct soc_mixer_control *)kcontrol->private_value;
370
371 if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
372 dev_warn(widget->dapm->dev,
373 "ASoC: Unsupported stereo autodisable control '%s'\n",
374 ctrl_name);
375
376 if (mc->autodisable) {
377 struct snd_soc_dapm_widget template;
378
379 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
380 "Autodisable");
381 if (!name) {
382 ret = -ENOMEM;
383 goto err_data;
384 }
385
386 memset(&template, 0, sizeof(template));
387 template.reg = mc->reg;
388 template.mask = (1 << fls(mc->max)) - 1;
389 template.shift = mc->shift;
390 if (mc->invert)
391 template.off_val = mc->max;
392 else
393 template.off_val = 0;
394 template.on_val = template.off_val;
395 template.id = snd_soc_dapm_kcontrol;
396 template.name = name;
397
398 data->value = template.on_val;
399
400 data->widget =
401 snd_soc_dapm_new_control_unlocked(widget->dapm,
402 &template);
403 kfree(name);
404 if (IS_ERR(data->widget)) {
405 ret = PTR_ERR(data->widget);
406 goto err_data;
407 }
408 }
409 break;
410 case snd_soc_dapm_demux:
411 case snd_soc_dapm_mux:
412 e = (struct soc_enum *)kcontrol->private_value;
413
414 if (e->autodisable) {
415 struct snd_soc_dapm_widget template;
416
417 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
418 "Autodisable");
419 if (!name) {
420 ret = -ENOMEM;
421 goto err_data;
422 }
423
424 memset(&template, 0, sizeof(template));
425 template.reg = e->reg;
426 template.mask = e->mask;
427 template.shift = e->shift_l;
428 template.off_val = snd_soc_enum_item_to_val(e, 0);
429 template.on_val = template.off_val;
430 template.id = snd_soc_dapm_kcontrol;
431 template.name = name;
432
433 data->value = template.on_val;
434
435 data->widget = snd_soc_dapm_new_control_unlocked(
436 widget->dapm, &template);
437 kfree(name);
438 if (IS_ERR(data->widget)) {
439 ret = PTR_ERR(data->widget);
440 goto err_data;
441 }
442
443 snd_soc_dapm_add_path(widget->dapm, data->widget,
444 widget, NULL, NULL);
445 }
446 break;
447 default:
448 break;
449 }
450
451 kcontrol->private_data = data;
452
453 return 0;
454
455 err_data:
456 kfree(data);
457 return ret;
458 }
459
460 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
461 {
462 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
463
464 list_del(&data->paths);
465 kfree(data->wlist);
466 kfree(data);
467 }
468
469 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
470 const struct snd_kcontrol *kcontrol)
471 {
472 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
473
474 return data->wlist;
475 }
476
477 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
478 struct snd_soc_dapm_widget *widget)
479 {
480 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
481 struct snd_soc_dapm_widget_list *new_wlist;
482 unsigned int n;
483
484 if (data->wlist)
485 n = data->wlist->num_widgets + 1;
486 else
487 n = 1;
488
489 new_wlist = krealloc(data->wlist,
490 struct_size(new_wlist, widgets, n),
491 GFP_KERNEL);
492 if (!new_wlist)
493 return -ENOMEM;
494
495 new_wlist->widgets[n - 1] = widget;
496 new_wlist->num_widgets = n;
497
498 data->wlist = new_wlist;
499
500 return 0;
501 }
502
503 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
504 struct snd_soc_dapm_path *path)
505 {
506 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
507
508 list_add_tail(&path->list_kcontrol, &data->paths);
509 }
510
511 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
512 {
513 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
514
515 if (!data->widget)
516 return true;
517
518 return data->widget->power;
519 }
520
521 static struct list_head *dapm_kcontrol_get_path_list(
522 const struct snd_kcontrol *kcontrol)
523 {
524 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
525
526 return &data->paths;
527 }
528
529 #define dapm_kcontrol_for_each_path(path, kcontrol) \
530 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
531 list_kcontrol)
532
533 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
534 {
535 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
536
537 return data->value;
538 }
539 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
540
541 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
542 unsigned int value)
543 {
544 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
545
546 if (data->value == value)
547 return false;
548
549 if (data->widget) {
550 switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
551 case snd_soc_dapm_switch:
552 case snd_soc_dapm_mixer:
553 case snd_soc_dapm_mixer_named_ctl:
554 data->widget->on_val = value & data->widget->mask;
555 break;
556 case snd_soc_dapm_demux:
557 case snd_soc_dapm_mux:
558 data->widget->on_val = value >> data->widget->shift;
559 break;
560 default:
561 data->widget->on_val = value;
562 break;
563 }
564 }
565
566 data->value = value;
567
568 return true;
569 }
570
571
572
573
574
575
576 struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
577 struct snd_kcontrol *kcontrol)
578 {
579 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
580 }
581 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
582
583
584
585
586
587
588
589
590
591 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
592 struct snd_kcontrol *kcontrol)
593 {
594 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
595 }
596 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
597
598 static void dapm_reset(struct snd_soc_card *card)
599 {
600 struct snd_soc_dapm_widget *w;
601
602 lockdep_assert_held(&card->dapm_mutex);
603
604 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
605
606 list_for_each_entry(w, &card->widgets, list) {
607 w->new_power = w->power;
608 w->power_checked = false;
609 }
610 }
611
612 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
613 {
614 if (!dapm->component)
615 return NULL;
616 return dapm->component->name_prefix;
617 }
618
619 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
620 unsigned int *value)
621 {
622 if (!dapm->component)
623 return -EIO;
624 return snd_soc_component_read(dapm->component, reg, value);
625 }
626
627 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
628 int reg, unsigned int mask, unsigned int value)
629 {
630 if (!dapm->component)
631 return -EIO;
632 return snd_soc_component_update_bits(dapm->component, reg,
633 mask, value);
634 }
635
636 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
637 int reg, unsigned int mask, unsigned int value)
638 {
639 if (!dapm->component)
640 return -EIO;
641 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
642 }
643
644 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
645 {
646 if (dapm->component)
647 snd_soc_component_async_complete(dapm->component);
648 }
649
650 static struct snd_soc_dapm_widget *
651 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
652 {
653 struct snd_soc_dapm_widget *w = wcache->widget;
654 struct list_head *wlist;
655 const int depth = 2;
656 int i = 0;
657
658 if (w) {
659 wlist = &w->dapm->card->widgets;
660
661 list_for_each_entry_from(w, wlist, list) {
662 if (!strcmp(name, w->name))
663 return w;
664
665 if (++i == depth)
666 break;
667 }
668 }
669
670 return NULL;
671 }
672
673 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
674 struct snd_soc_dapm_widget *w)
675 {
676 wcache->widget = w;
677 }
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
697 enum snd_soc_bias_level level)
698 {
699 int ret = 0;
700
701 if (dapm->component)
702 ret = snd_soc_component_set_bias_level(dapm->component, level);
703
704 if (ret == 0)
705 dapm->bias_level = level;
706
707 return ret;
708 }
709 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
710
711
712
713
714
715
716
717
718
719
720 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
721 enum snd_soc_bias_level level)
722 {
723 struct snd_soc_card *card = dapm->card;
724 int ret = 0;
725
726 trace_snd_soc_bias_level_start(card, level);
727
728 if (card && card->set_bias_level)
729 ret = card->set_bias_level(card, dapm, level);
730 if (ret != 0)
731 goto out;
732
733 if (!card || dapm != &card->dapm)
734 ret = snd_soc_dapm_force_bias_level(dapm, level);
735
736 if (ret != 0)
737 goto out;
738
739 if (card && card->set_bias_level_post)
740 ret = card->set_bias_level_post(card, dapm, level);
741 out:
742 trace_snd_soc_bias_level_done(card, level);
743
744 return ret;
745 }
746
747
748 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
749 struct snd_soc_dapm_path *path, const char *control_name,
750 struct snd_soc_dapm_widget *w)
751 {
752 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
753 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
754 unsigned int val, item;
755 int i;
756
757 if (e->reg != SND_SOC_NOPM) {
758 soc_dapm_read(dapm, e->reg, &val);
759 val = (val >> e->shift_l) & e->mask;
760 item = snd_soc_enum_val_to_item(e, val);
761 } else {
762
763
764
765
766
767
768 item = 0;
769 }
770
771 i = match_string(e->texts, e->items, control_name);
772 if (i < 0)
773 return -ENODEV;
774
775 path->name = e->texts[i];
776 path->connect = (i == item);
777 return 0;
778
779 }
780
781
782 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
783 int nth_path)
784 {
785 struct soc_mixer_control *mc = (struct soc_mixer_control *)
786 p->sink->kcontrol_news[i].private_value;
787 unsigned int reg = mc->reg;
788 unsigned int shift = mc->shift;
789 unsigned int max = mc->max;
790 unsigned int mask = (1 << fls(max)) - 1;
791 unsigned int invert = mc->invert;
792 unsigned int val;
793
794 if (reg != SND_SOC_NOPM) {
795 soc_dapm_read(p->sink->dapm, reg, &val);
796
797
798
799
800
801
802
803
804
805
806
807
808 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
809 if (reg != mc->rreg)
810 soc_dapm_read(p->sink->dapm, mc->rreg, &val);
811 val = (val >> mc->rshift) & mask;
812 } else {
813 val = (val >> shift) & mask;
814 }
815 if (invert)
816 val = max - val;
817 p->connect = !!val;
818 } else {
819
820
821
822
823
824
825 p->connect = invert;
826 }
827 }
828
829
830 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
831 struct snd_soc_dapm_path *path, const char *control_name)
832 {
833 int i, nth_path = 0;
834
835
836 for (i = 0; i < path->sink->num_kcontrols; i++) {
837 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
838 path->name = path->sink->kcontrol_news[i].name;
839 dapm_set_mixer_path_status(path, i, nth_path++);
840 return 0;
841 }
842 }
843 return -ENODEV;
844 }
845
846 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
847 struct snd_soc_dapm_widget *kcontrolw,
848 const struct snd_kcontrol_new *kcontrol_new,
849 struct snd_kcontrol **kcontrol)
850 {
851 struct snd_soc_dapm_widget *w;
852 int i;
853
854 *kcontrol = NULL;
855
856 list_for_each_entry(w, &dapm->card->widgets, list) {
857 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
858 continue;
859 for (i = 0; i < w->num_kcontrols; i++) {
860 if (&w->kcontrol_news[i] == kcontrol_new) {
861 if (w->kcontrols)
862 *kcontrol = w->kcontrols[i];
863 return 1;
864 }
865 }
866 }
867
868 return 0;
869 }
870
871
872
873
874
875 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
876 int kci)
877 {
878 struct snd_soc_dapm_context *dapm = w->dapm;
879 struct snd_card *card = dapm->card->snd_card;
880 const char *prefix;
881 size_t prefix_len;
882 int shared;
883 struct snd_kcontrol *kcontrol;
884 bool wname_in_long_name, kcname_in_long_name;
885 char *long_name = NULL;
886 const char *name;
887 int ret = 0;
888
889 prefix = soc_dapm_prefix(dapm);
890 if (prefix)
891 prefix_len = strlen(prefix) + 1;
892 else
893 prefix_len = 0;
894
895 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
896 &kcontrol);
897
898 if (!kcontrol) {
899 if (shared) {
900 wname_in_long_name = false;
901 kcname_in_long_name = true;
902 } else {
903 switch (w->id) {
904 case snd_soc_dapm_switch:
905 case snd_soc_dapm_mixer:
906 case snd_soc_dapm_pga:
907 case snd_soc_dapm_effect:
908 case snd_soc_dapm_out_drv:
909 wname_in_long_name = true;
910 kcname_in_long_name = true;
911 break;
912 case snd_soc_dapm_mixer_named_ctl:
913 wname_in_long_name = false;
914 kcname_in_long_name = true;
915 break;
916 case snd_soc_dapm_demux:
917 case snd_soc_dapm_mux:
918 wname_in_long_name = true;
919 kcname_in_long_name = false;
920 break;
921 default:
922 return -EINVAL;
923 }
924 }
925
926 if (wname_in_long_name && kcname_in_long_name) {
927
928
929
930
931
932
933 long_name = kasprintf(GFP_KERNEL, "%s %s",
934 w->name + prefix_len,
935 w->kcontrol_news[kci].name);
936 if (long_name == NULL)
937 return -ENOMEM;
938
939 name = long_name;
940 } else if (wname_in_long_name) {
941 long_name = NULL;
942 name = w->name + prefix_len;
943 } else {
944 long_name = NULL;
945 name = w->kcontrol_news[kci].name;
946 }
947
948 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
949 prefix);
950 if (!kcontrol) {
951 ret = -ENOMEM;
952 goto exit_free;
953 }
954
955 kcontrol->private_free = dapm_kcontrol_free;
956
957 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
958 if (ret) {
959 snd_ctl_free_one(kcontrol);
960 goto exit_free;
961 }
962
963 ret = snd_ctl_add(card, kcontrol);
964 if (ret < 0) {
965 dev_err(dapm->dev,
966 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
967 w->name, name, ret);
968 goto exit_free;
969 }
970 }
971
972 ret = dapm_kcontrol_add_widget(kcontrol, w);
973 if (ret == 0)
974 w->kcontrols[kci] = kcontrol;
975
976 exit_free:
977 kfree(long_name);
978
979 return ret;
980 }
981
982
983 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
984 {
985 int i, ret;
986 struct snd_soc_dapm_path *path;
987 struct dapm_kcontrol_data *data;
988
989
990 for (i = 0; i < w->num_kcontrols; i++) {
991
992 snd_soc_dapm_widget_for_each_source_path(w, path) {
993
994 if (path->name != (char *)w->kcontrol_news[i].name)
995 continue;
996
997 if (!w->kcontrols[i]) {
998 ret = dapm_create_or_share_kcontrol(w, i);
999 if (ret < 0)
1000 return ret;
1001 }
1002
1003 dapm_kcontrol_add_path(w->kcontrols[i], path);
1004
1005 data = snd_kcontrol_chip(w->kcontrols[i]);
1006 if (data->widget)
1007 snd_soc_dapm_add_path(data->widget->dapm,
1008 data->widget,
1009 path->source,
1010 NULL, NULL);
1011 }
1012 }
1013
1014 return 0;
1015 }
1016
1017
1018 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1019 {
1020 struct snd_soc_dapm_context *dapm = w->dapm;
1021 enum snd_soc_dapm_direction dir;
1022 struct snd_soc_dapm_path *path;
1023 const char *type;
1024 int ret;
1025
1026 switch (w->id) {
1027 case snd_soc_dapm_mux:
1028 dir = SND_SOC_DAPM_DIR_OUT;
1029 type = "mux";
1030 break;
1031 case snd_soc_dapm_demux:
1032 dir = SND_SOC_DAPM_DIR_IN;
1033 type = "demux";
1034 break;
1035 default:
1036 return -EINVAL;
1037 }
1038
1039 if (w->num_kcontrols != 1) {
1040 dev_err(dapm->dev,
1041 "ASoC: %s %s has incorrect number of controls\n", type,
1042 w->name);
1043 return -EINVAL;
1044 }
1045
1046 if (list_empty(&w->edges[dir])) {
1047 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1048 return -EINVAL;
1049 }
1050
1051 ret = dapm_create_or_share_kcontrol(w, 0);
1052 if (ret < 0)
1053 return ret;
1054
1055 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1056 if (path->name)
1057 dapm_kcontrol_add_path(w->kcontrols[0], path);
1058 }
1059
1060 return 0;
1061 }
1062
1063
1064 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1065 {
1066 int i, ret;
1067
1068 for (i = 0; i < w->num_kcontrols; i++) {
1069 ret = dapm_create_or_share_kcontrol(w, i);
1070 if (ret < 0)
1071 return ret;
1072 }
1073
1074 return 0;
1075 }
1076
1077
1078 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1079 {
1080 int i, ret;
1081 struct snd_kcontrol *kcontrol;
1082 struct snd_soc_dapm_context *dapm = w->dapm;
1083 struct snd_card *card = dapm->card->snd_card;
1084 struct snd_soc_pcm_runtime *rtd = w->priv;
1085
1086
1087 if (rtd->dai_link->num_params <= 1)
1088 return 0;
1089
1090
1091 for (i = 0; i < w->num_kcontrols; i++) {
1092 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1093 w->name, NULL);
1094 ret = snd_ctl_add(card, kcontrol);
1095 if (ret < 0) {
1096 dev_err(dapm->dev,
1097 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1098 w->name, w->kcontrol_news[i].name, ret);
1099 return ret;
1100 }
1101 kcontrol->private_data = w;
1102 w->kcontrols[i] = kcontrol;
1103 }
1104
1105 return 0;
1106 }
1107
1108
1109
1110
1111
1112 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1113 {
1114 int level = snd_power_get_state(widget->dapm->card->snd_card);
1115
1116 switch (level) {
1117 case SNDRV_CTL_POWER_D3hot:
1118 case SNDRV_CTL_POWER_D3cold:
1119 if (widget->ignore_suspend)
1120 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1121 widget->name);
1122 return widget->ignore_suspend;
1123 default:
1124 return 1;
1125 }
1126 }
1127
1128 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1129 struct list_head *widgets)
1130 {
1131 struct snd_soc_dapm_widget *w;
1132 struct list_head *it;
1133 unsigned int size = 0;
1134 unsigned int i = 0;
1135
1136 list_for_each(it, widgets)
1137 size++;
1138
1139 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1140 if (*list == NULL)
1141 return -ENOMEM;
1142
1143 list_for_each_entry(w, widgets, work_list)
1144 (*list)->widgets[i++] = w;
1145
1146 (*list)->num_widgets = i;
1147
1148 return 0;
1149 }
1150
1151
1152
1153
1154
1155
1156 static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
1157 enum snd_soc_dapm_direction dir)
1158 {
1159 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1160 struct snd_soc_dapm_path *path;
1161
1162 widget->endpoints[dir] = -1;
1163
1164 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1165 if (path->weak || path->is_supply)
1166 continue;
1167
1168 if (path->walking)
1169 return;
1170
1171 if (path->connect) {
1172 path->walking = 1;
1173 invalidate_paths_ep(path->node[dir], dir);
1174 path->walking = 0;
1175 }
1176 }
1177 }
1178
1179
1180
1181
1182
1183
1184
1185
1186 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1187 struct list_head *list, enum snd_soc_dapm_direction dir,
1188 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1189 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1190 enum snd_soc_dapm_direction)),
1191 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1192 enum snd_soc_dapm_direction))
1193 {
1194 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1195 struct snd_soc_dapm_path *path;
1196 int con = 0;
1197
1198 if (widget->endpoints[dir] >= 0)
1199 return widget->endpoints[dir];
1200
1201 DAPM_UPDATE_STAT(widget, path_checks);
1202
1203
1204 if (list)
1205 list_add_tail(&widget->work_list, list);
1206
1207 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1208 list = NULL;
1209 custom_stop_condition = NULL;
1210 }
1211
1212 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1213 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1214 return widget->endpoints[dir];
1215 }
1216
1217 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1218 DAPM_UPDATE_STAT(widget, neighbour_checks);
1219
1220 if (path->weak || path->is_supply)
1221 continue;
1222
1223 if (path->walking)
1224 return 1;
1225
1226 trace_snd_soc_dapm_path(widget, dir, path);
1227
1228 if (path->connect) {
1229 path->walking = 1;
1230 con += fn(path->node[dir], list, custom_stop_condition);
1231 path->walking = 0;
1232 }
1233 }
1234
1235 widget->endpoints[dir] = con;
1236
1237 return con;
1238 }
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1250 struct list_head *list,
1251 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1252 enum snd_soc_dapm_direction))
1253 {
1254 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1255 is_connected_output_ep, custom_stop_condition);
1256 }
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1268 struct list_head *list,
1269 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1270 enum snd_soc_dapm_direction))
1271 {
1272 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1273 is_connected_input_ep, custom_stop_condition);
1274 }
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1296 struct snd_soc_dapm_widget_list **list,
1297 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1298 enum snd_soc_dapm_direction))
1299 {
1300 struct snd_soc_card *card = dai->component->card;
1301 struct snd_soc_dapm_widget *w;
1302 LIST_HEAD(widgets);
1303 int paths;
1304 int ret;
1305
1306 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1307
1308 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1309 w = dai->playback_widget;
1310 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
1311 paths = is_connected_output_ep(w, &widgets,
1312 custom_stop_condition);
1313 } else {
1314 w = dai->capture_widget;
1315 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
1316 paths = is_connected_input_ep(w, &widgets,
1317 custom_stop_condition);
1318 }
1319
1320
1321 list_del(widgets.next);
1322
1323 ret = dapm_widget_list_create(list, &widgets);
1324 if (ret)
1325 paths = ret;
1326
1327 trace_snd_soc_dapm_connected(paths, stream);
1328 mutex_unlock(&card->dapm_mutex);
1329
1330 return paths;
1331 }
1332
1333
1334
1335
1336 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1337 struct snd_kcontrol *kcontrol, int event)
1338 {
1339 int ret;
1340
1341 soc_dapm_async_complete(w->dapm);
1342
1343 if (SND_SOC_DAPM_EVENT_ON(event)) {
1344 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1345 ret = regulator_allow_bypass(w->regulator, false);
1346 if (ret != 0)
1347 dev_warn(w->dapm->dev,
1348 "ASoC: Failed to unbypass %s: %d\n",
1349 w->name, ret);
1350 }
1351
1352 return regulator_enable(w->regulator);
1353 } else {
1354 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1355 ret = regulator_allow_bypass(w->regulator, true);
1356 if (ret != 0)
1357 dev_warn(w->dapm->dev,
1358 "ASoC: Failed to bypass %s: %d\n",
1359 w->name, ret);
1360 }
1361
1362 return regulator_disable_deferred(w->regulator, w->shift);
1363 }
1364 }
1365 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1366
1367
1368
1369
1370 int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1371 struct snd_kcontrol *kcontrol, int event)
1372 {
1373 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1374 struct pinctrl *p = w->pinctrl;
1375 struct pinctrl_state *s;
1376
1377 if (!p || !priv)
1378 return -EIO;
1379
1380 if (SND_SOC_DAPM_EVENT_ON(event))
1381 s = pinctrl_lookup_state(p, priv->active_state);
1382 else
1383 s = pinctrl_lookup_state(p, priv->sleep_state);
1384
1385 if (IS_ERR(s))
1386 return PTR_ERR(s);
1387
1388 return pinctrl_select_state(p, s);
1389 }
1390 EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1391
1392
1393
1394
1395 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1396 struct snd_kcontrol *kcontrol, int event)
1397 {
1398 if (!w->clk)
1399 return -EIO;
1400
1401 soc_dapm_async_complete(w->dapm);
1402
1403 if (SND_SOC_DAPM_EVENT_ON(event)) {
1404 return clk_prepare_enable(w->clk);
1405 } else {
1406 clk_disable_unprepare(w->clk);
1407 return 0;
1408 }
1409
1410 return 0;
1411 }
1412 EXPORT_SYMBOL_GPL(dapm_clock_event);
1413
1414 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1415 {
1416 if (w->power_checked)
1417 return w->new_power;
1418
1419 if (w->force)
1420 w->new_power = 1;
1421 else
1422 w->new_power = w->power_check(w);
1423
1424 w->power_checked = true;
1425
1426 return w->new_power;
1427 }
1428
1429
1430 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1431 {
1432 int in, out;
1433
1434 DAPM_UPDATE_STAT(w, power_checks);
1435
1436 in = is_connected_input_ep(w, NULL, NULL);
1437 out = is_connected_output_ep(w, NULL, NULL);
1438 return out != 0 && in != 0;
1439 }
1440
1441
1442 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1443 {
1444 struct snd_soc_dapm_path *path;
1445
1446 DAPM_UPDATE_STAT(w, power_checks);
1447
1448
1449 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1450 DAPM_UPDATE_STAT(w, neighbour_checks);
1451
1452 if (path->weak)
1453 continue;
1454
1455 if (path->connected &&
1456 !path->connected(path->source, path->sink))
1457 continue;
1458
1459 if (dapm_widget_power_check(path->sink))
1460 return 1;
1461 }
1462
1463 return 0;
1464 }
1465
1466 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1467 {
1468 return w->connected;
1469 }
1470
1471 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1472 struct snd_soc_dapm_widget *b,
1473 bool power_up)
1474 {
1475 int *sort;
1476
1477 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
1478 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
1479
1480 if (power_up)
1481 sort = dapm_up_seq;
1482 else
1483 sort = dapm_down_seq;
1484
1485 WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
1486 WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
1487
1488 if (sort[a->id] != sort[b->id])
1489 return sort[a->id] - sort[b->id];
1490 if (a->subseq != b->subseq) {
1491 if (power_up)
1492 return a->subseq - b->subseq;
1493 else
1494 return b->subseq - a->subseq;
1495 }
1496 if (a->reg != b->reg)
1497 return a->reg - b->reg;
1498 if (a->dapm != b->dapm)
1499 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1500
1501 return 0;
1502 }
1503
1504
1505 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1506 struct list_head *list,
1507 bool power_up)
1508 {
1509 struct snd_soc_dapm_widget *w;
1510
1511 list_for_each_entry(w, list, power_list)
1512 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1513 list_add_tail(&new_widget->power_list, &w->power_list);
1514 return;
1515 }
1516
1517 list_add_tail(&new_widget->power_list, list);
1518 }
1519
1520 static void dapm_seq_check_event(struct snd_soc_card *card,
1521 struct snd_soc_dapm_widget *w, int event)
1522 {
1523 const char *ev_name;
1524 int power, ret;
1525
1526 switch (event) {
1527 case SND_SOC_DAPM_PRE_PMU:
1528 ev_name = "PRE_PMU";
1529 power = 1;
1530 break;
1531 case SND_SOC_DAPM_POST_PMU:
1532 ev_name = "POST_PMU";
1533 power = 1;
1534 break;
1535 case SND_SOC_DAPM_PRE_PMD:
1536 ev_name = "PRE_PMD";
1537 power = 0;
1538 break;
1539 case SND_SOC_DAPM_POST_PMD:
1540 ev_name = "POST_PMD";
1541 power = 0;
1542 break;
1543 case SND_SOC_DAPM_WILL_PMU:
1544 ev_name = "WILL_PMU";
1545 power = 1;
1546 break;
1547 case SND_SOC_DAPM_WILL_PMD:
1548 ev_name = "WILL_PMD";
1549 power = 0;
1550 break;
1551 default:
1552 WARN(1, "Unknown event %d\n", event);
1553 return;
1554 }
1555
1556 if (w->new_power != power)
1557 return;
1558
1559 if (w->event && (w->event_flags & event)) {
1560 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1561 w->name, ev_name);
1562 soc_dapm_async_complete(w->dapm);
1563 trace_snd_soc_dapm_widget_event_start(w, event);
1564 ret = w->event(w, NULL, event);
1565 trace_snd_soc_dapm_widget_event_done(w, event);
1566 if (ret < 0)
1567 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1568 ev_name, w->name, ret);
1569 }
1570 }
1571
1572
1573 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1574 struct list_head *pending)
1575 {
1576 struct snd_soc_dapm_context *dapm;
1577 struct snd_soc_dapm_widget *w;
1578 int reg;
1579 unsigned int value = 0;
1580 unsigned int mask = 0;
1581
1582 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1583 reg = w->reg;
1584 dapm = w->dapm;
1585
1586 list_for_each_entry(w, pending, power_list) {
1587 WARN_ON(reg != w->reg || dapm != w->dapm);
1588 w->power = w->new_power;
1589
1590 mask |= w->mask << w->shift;
1591 if (w->power)
1592 value |= w->on_val << w->shift;
1593 else
1594 value |= w->off_val << w->shift;
1595
1596 pop_dbg(dapm->dev, card->pop_time,
1597 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1598 w->name, reg, value, mask);
1599
1600
1601 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1602 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1603 }
1604
1605 if (reg >= 0) {
1606
1607
1608
1609
1610 pop_dbg(dapm->dev, card->pop_time,
1611 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1612 value, mask, reg, card->pop_time);
1613 pop_wait(card->pop_time);
1614 soc_dapm_update_bits(dapm, reg, mask, value);
1615 }
1616
1617 list_for_each_entry(w, pending, power_list) {
1618 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1619 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1620 }
1621 }
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631 static void dapm_seq_run(struct snd_soc_card *card,
1632 struct list_head *list, int event, bool power_up)
1633 {
1634 struct snd_soc_dapm_widget *w, *n;
1635 struct snd_soc_dapm_context *d;
1636 LIST_HEAD(pending);
1637 int cur_sort = -1;
1638 int cur_subseq = -1;
1639 int cur_reg = SND_SOC_NOPM;
1640 struct snd_soc_dapm_context *cur_dapm = NULL;
1641 int ret, i;
1642 int *sort;
1643
1644 if (power_up)
1645 sort = dapm_up_seq;
1646 else
1647 sort = dapm_down_seq;
1648
1649 list_for_each_entry_safe(w, n, list, power_list) {
1650 ret = 0;
1651
1652
1653 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1654 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1655 if (!list_empty(&pending))
1656 dapm_seq_run_coalesced(card, &pending);
1657
1658 if (cur_dapm && cur_dapm->component) {
1659 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1660 if (sort[i] == cur_sort)
1661 snd_soc_component_seq_notifier(
1662 cur_dapm->component,
1663 i, cur_subseq);
1664 }
1665
1666 if (cur_dapm && w->dapm != cur_dapm)
1667 soc_dapm_async_complete(cur_dapm);
1668
1669 INIT_LIST_HEAD(&pending);
1670 cur_sort = -1;
1671 cur_subseq = INT_MIN;
1672 cur_reg = SND_SOC_NOPM;
1673 cur_dapm = NULL;
1674 }
1675
1676 switch (w->id) {
1677 case snd_soc_dapm_pre:
1678 if (!w->event)
1679 list_for_each_entry_safe_continue(w, n, list,
1680 power_list);
1681
1682 if (event == SND_SOC_DAPM_STREAM_START)
1683 ret = w->event(w,
1684 NULL, SND_SOC_DAPM_PRE_PMU);
1685 else if (event == SND_SOC_DAPM_STREAM_STOP)
1686 ret = w->event(w,
1687 NULL, SND_SOC_DAPM_PRE_PMD);
1688 break;
1689
1690 case snd_soc_dapm_post:
1691 if (!w->event)
1692 list_for_each_entry_safe_continue(w, n, list,
1693 power_list);
1694
1695 if (event == SND_SOC_DAPM_STREAM_START)
1696 ret = w->event(w,
1697 NULL, SND_SOC_DAPM_POST_PMU);
1698 else if (event == SND_SOC_DAPM_STREAM_STOP)
1699 ret = w->event(w,
1700 NULL, SND_SOC_DAPM_POST_PMD);
1701 break;
1702
1703 default:
1704
1705 cur_sort = sort[w->id];
1706 cur_subseq = w->subseq;
1707 cur_reg = w->reg;
1708 cur_dapm = w->dapm;
1709 list_move(&w->power_list, &pending);
1710 break;
1711 }
1712
1713 if (ret < 0)
1714 dev_err(w->dapm->dev,
1715 "ASoC: Failed to apply widget power: %d\n", ret);
1716 }
1717
1718 if (!list_empty(&pending))
1719 dapm_seq_run_coalesced(card, &pending);
1720
1721 if (cur_dapm && cur_dapm->component) {
1722 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1723 if (sort[i] == cur_sort)
1724 snd_soc_component_seq_notifier(
1725 cur_dapm->component,
1726 i, cur_subseq);
1727 }
1728
1729 list_for_each_entry(d, &card->dapm_list, list) {
1730 soc_dapm_async_complete(d);
1731 }
1732 }
1733
1734 static void dapm_widget_update(struct snd_soc_card *card)
1735 {
1736 struct snd_soc_dapm_update *update = card->update;
1737 struct snd_soc_dapm_widget_list *wlist;
1738 struct snd_soc_dapm_widget *w = NULL;
1739 unsigned int wi;
1740 int ret;
1741
1742 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1743 return;
1744
1745 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1746
1747 for (wi = 0; wi < wlist->num_widgets; wi++) {
1748 w = wlist->widgets[wi];
1749
1750 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1751 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1752 if (ret != 0)
1753 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1754 w->name, ret);
1755 }
1756 }
1757
1758 if (!w)
1759 return;
1760
1761 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1762 update->val);
1763 if (ret < 0)
1764 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1765 w->name, ret);
1766
1767 if (update->has_second_set) {
1768 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1769 update->mask2, update->val2);
1770 if (ret < 0)
1771 dev_err(w->dapm->dev,
1772 "ASoC: %s DAPM update failed: %d\n",
1773 w->name, ret);
1774 }
1775
1776 for (wi = 0; wi < wlist->num_widgets; wi++) {
1777 w = wlist->widgets[wi];
1778
1779 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1780 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1781 if (ret != 0)
1782 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1783 w->name, ret);
1784 }
1785 }
1786 }
1787
1788
1789
1790
1791 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1792 {
1793 struct snd_soc_dapm_context *d = data;
1794 int ret;
1795
1796
1797 if (d->bias_level == SND_SOC_BIAS_OFF &&
1798 d->target_bias_level != SND_SOC_BIAS_OFF) {
1799 if (d->dev)
1800 pm_runtime_get_sync(d->dev);
1801
1802 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1803 if (ret != 0)
1804 dev_err(d->dev,
1805 "ASoC: Failed to turn on bias: %d\n", ret);
1806 }
1807
1808
1809 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1810 d->bias_level != SND_SOC_BIAS_ON) ||
1811 (d->target_bias_level != SND_SOC_BIAS_ON &&
1812 d->bias_level == SND_SOC_BIAS_ON)) {
1813 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1814 if (ret != 0)
1815 dev_err(d->dev,
1816 "ASoC: Failed to prepare bias: %d\n", ret);
1817 }
1818 }
1819
1820
1821
1822
1823 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1824 {
1825 struct snd_soc_dapm_context *d = data;
1826 int ret;
1827
1828
1829 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1830 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1831 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1832 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1833 if (ret != 0)
1834 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1835 ret);
1836 }
1837
1838
1839 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1840 d->target_bias_level == SND_SOC_BIAS_OFF) {
1841 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1842 if (ret != 0)
1843 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1844 ret);
1845
1846 if (d->dev)
1847 pm_runtime_put(d->dev);
1848 }
1849
1850
1851 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1852 d->target_bias_level == SND_SOC_BIAS_ON) {
1853 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1854 if (ret != 0)
1855 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1856 ret);
1857 }
1858 }
1859
1860 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1861 bool power, bool connect)
1862 {
1863
1864
1865
1866 if (!connect)
1867 return;
1868
1869
1870
1871 if (power != peer->power)
1872 dapm_mark_dirty(peer, "peer state change");
1873 }
1874
1875 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1876 struct list_head *up_list,
1877 struct list_head *down_list)
1878 {
1879 struct snd_soc_dapm_path *path;
1880
1881 if (w->power == power)
1882 return;
1883
1884 trace_snd_soc_dapm_widget_power(w, power);
1885
1886
1887
1888
1889 snd_soc_dapm_widget_for_each_source_path(w, path)
1890 dapm_widget_set_peer_power(path->source, power, path->connect);
1891
1892
1893 if (!w->is_supply) {
1894 snd_soc_dapm_widget_for_each_sink_path(w, path)
1895 dapm_widget_set_peer_power(path->sink, power,
1896 path->connect);
1897 }
1898
1899 if (power)
1900 dapm_seq_insert(w, up_list, true);
1901 else
1902 dapm_seq_insert(w, down_list, false);
1903 }
1904
1905 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1906 struct list_head *up_list,
1907 struct list_head *down_list)
1908 {
1909 int power;
1910
1911 switch (w->id) {
1912 case snd_soc_dapm_pre:
1913 dapm_seq_insert(w, down_list, false);
1914 break;
1915 case snd_soc_dapm_post:
1916 dapm_seq_insert(w, up_list, true);
1917 break;
1918
1919 default:
1920 power = dapm_widget_power_check(w);
1921
1922 dapm_widget_set_power(w, power, up_list, down_list);
1923 break;
1924 }
1925 }
1926
1927 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1928 {
1929 if (dapm->idle_bias_off)
1930 return true;
1931
1932 switch (snd_power_get_state(dapm->card->snd_card)) {
1933 case SNDRV_CTL_POWER_D3hot:
1934 case SNDRV_CTL_POWER_D3cold:
1935 return dapm->suspend_bias_off;
1936 default:
1937 break;
1938 }
1939
1940 return false;
1941 }
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1953 {
1954 struct snd_soc_dapm_widget *w;
1955 struct snd_soc_dapm_context *d;
1956 LIST_HEAD(up_list);
1957 LIST_HEAD(down_list);
1958 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1959 enum snd_soc_bias_level bias;
1960 int ret;
1961
1962 lockdep_assert_held(&card->dapm_mutex);
1963
1964 trace_snd_soc_dapm_start(card);
1965
1966 list_for_each_entry(d, &card->dapm_list, list) {
1967 if (dapm_idle_bias_off(d))
1968 d->target_bias_level = SND_SOC_BIAS_OFF;
1969 else
1970 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1971 }
1972
1973 dapm_reset(card);
1974
1975
1976
1977
1978
1979
1980
1981 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1982 dapm_power_one_widget(w, &up_list, &down_list);
1983 }
1984
1985 list_for_each_entry(w, &card->widgets, list) {
1986 switch (w->id) {
1987 case snd_soc_dapm_pre:
1988 case snd_soc_dapm_post:
1989
1990 break;
1991 default:
1992 list_del_init(&w->dirty);
1993 break;
1994 }
1995
1996 if (w->new_power) {
1997 d = w->dapm;
1998
1999
2000
2001
2002
2003
2004
2005
2006 switch (w->id) {
2007 case snd_soc_dapm_siggen:
2008 case snd_soc_dapm_vmid:
2009 break;
2010 case snd_soc_dapm_supply:
2011 case snd_soc_dapm_regulator_supply:
2012 case snd_soc_dapm_pinctrl:
2013 case snd_soc_dapm_clock_supply:
2014 case snd_soc_dapm_micbias:
2015 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
2016 d->target_bias_level = SND_SOC_BIAS_STANDBY;
2017 break;
2018 default:
2019 d->target_bias_level = SND_SOC_BIAS_ON;
2020 break;
2021 }
2022 }
2023
2024 }
2025
2026
2027
2028
2029 bias = SND_SOC_BIAS_OFF;
2030 list_for_each_entry(d, &card->dapm_list, list)
2031 if (d->target_bias_level > bias)
2032 bias = d->target_bias_level;
2033 list_for_each_entry(d, &card->dapm_list, list)
2034 if (!dapm_idle_bias_off(d))
2035 d->target_bias_level = bias;
2036
2037 trace_snd_soc_dapm_walk_done(card);
2038
2039
2040 dapm_pre_sequence_async(&card->dapm, 0);
2041
2042 list_for_each_entry(d, &card->dapm_list, list) {
2043 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2044 async_schedule_domain(dapm_pre_sequence_async, d,
2045 &async_domain);
2046 }
2047 async_synchronize_full_domain(&async_domain);
2048
2049 list_for_each_entry(w, &down_list, power_list) {
2050 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2051 }
2052
2053 list_for_each_entry(w, &up_list, power_list) {
2054 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2055 }
2056
2057
2058 dapm_seq_run(card, &down_list, event, false);
2059
2060 dapm_widget_update(card);
2061
2062
2063 dapm_seq_run(card, &up_list, event, true);
2064
2065
2066 list_for_each_entry(d, &card->dapm_list, list) {
2067 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2068 async_schedule_domain(dapm_post_sequence_async, d,
2069 &async_domain);
2070 }
2071 async_synchronize_full_domain(&async_domain);
2072
2073 dapm_post_sequence_async(&card->dapm, 0);
2074
2075
2076 list_for_each_entry(d, &card->dapm_list, list) {
2077 if (!d->component)
2078 continue;
2079
2080 ret = snd_soc_component_stream_event(d->component, event);
2081 if (ret < 0)
2082 return ret;
2083 }
2084
2085 pop_dbg(card->dev, card->pop_time,
2086 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2087 pop_wait(card->pop_time);
2088
2089 trace_snd_soc_dapm_done(card);
2090
2091 return 0;
2092 }
2093
2094 #ifdef CONFIG_DEBUG_FS
2095 static ssize_t dapm_widget_power_read_file(struct file *file,
2096 char __user *user_buf,
2097 size_t count, loff_t *ppos)
2098 {
2099 struct snd_soc_dapm_widget *w = file->private_data;
2100 struct snd_soc_card *card = w->dapm->card;
2101 enum snd_soc_dapm_direction dir, rdir;
2102 char *buf;
2103 int in, out;
2104 ssize_t ret;
2105 struct snd_soc_dapm_path *p = NULL;
2106
2107 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2108 if (!buf)
2109 return -ENOMEM;
2110
2111 mutex_lock(&card->dapm_mutex);
2112
2113
2114 if (w->is_supply) {
2115 in = 0;
2116 out = 0;
2117 } else {
2118 in = is_connected_input_ep(w, NULL, NULL);
2119 out = is_connected_output_ep(w, NULL, NULL);
2120 }
2121
2122 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2123 w->name, w->power ? "On" : "Off",
2124 w->force ? " (forced)" : "", in, out);
2125
2126 if (w->reg >= 0)
2127 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2128 " - R%d(0x%x) mask 0x%x",
2129 w->reg, w->reg, w->mask << w->shift);
2130
2131 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2132
2133 if (w->sname)
2134 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2135 w->sname,
2136 w->active ? "active" : "inactive");
2137
2138 snd_soc_dapm_for_each_direction(dir) {
2139 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2140 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2141 if (p->connected && !p->connected(p->source, p->sink))
2142 continue;
2143
2144 if (!p->connect)
2145 continue;
2146
2147 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2148 " %s \"%s\" \"%s\"\n",
2149 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2150 p->name ? p->name : "static",
2151 p->node[rdir]->name);
2152 }
2153 }
2154
2155 mutex_unlock(&card->dapm_mutex);
2156
2157 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2158
2159 kfree(buf);
2160 return ret;
2161 }
2162
2163 static const struct file_operations dapm_widget_power_fops = {
2164 .open = simple_open,
2165 .read = dapm_widget_power_read_file,
2166 .llseek = default_llseek,
2167 };
2168
2169 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2170 size_t count, loff_t *ppos)
2171 {
2172 struct snd_soc_dapm_context *dapm = file->private_data;
2173 char *level;
2174
2175 switch (dapm->bias_level) {
2176 case SND_SOC_BIAS_ON:
2177 level = "On\n";
2178 break;
2179 case SND_SOC_BIAS_PREPARE:
2180 level = "Prepare\n";
2181 break;
2182 case SND_SOC_BIAS_STANDBY:
2183 level = "Standby\n";
2184 break;
2185 case SND_SOC_BIAS_OFF:
2186 level = "Off\n";
2187 break;
2188 default:
2189 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2190 level = "Unknown\n";
2191 break;
2192 }
2193
2194 return simple_read_from_buffer(user_buf, count, ppos, level,
2195 strlen(level));
2196 }
2197
2198 static const struct file_operations dapm_bias_fops = {
2199 .open = simple_open,
2200 .read = dapm_bias_read_file,
2201 .llseek = default_llseek,
2202 };
2203
2204 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2205 struct dentry *parent)
2206 {
2207 if (!parent || IS_ERR(parent))
2208 return;
2209
2210 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2211
2212 debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
2213 &dapm_bias_fops);
2214 }
2215
2216 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2217 {
2218 struct snd_soc_dapm_context *dapm = w->dapm;
2219
2220 if (!dapm->debugfs_dapm || !w->name)
2221 return;
2222
2223 debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
2224 &dapm_widget_power_fops);
2225 }
2226
2227 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2228 {
2229 debugfs_remove_recursive(dapm->debugfs_dapm);
2230 dapm->debugfs_dapm = NULL;
2231 }
2232
2233 #else
2234 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2235 struct dentry *parent)
2236 {
2237 }
2238
2239 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2240 {
2241 }
2242
2243 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2244 {
2245 }
2246
2247 #endif
2248
2249
2250
2251
2252
2253
2254
2255
2256 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2257 bool connect, const char *reason)
2258 {
2259 if (path->connect == connect)
2260 return;
2261
2262 path->connect = connect;
2263 dapm_mark_dirty(path->source, reason);
2264 dapm_mark_dirty(path->sink, reason);
2265 dapm_path_invalidate(path);
2266 }
2267
2268
2269 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2270 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2271 {
2272 struct snd_soc_dapm_path *path;
2273 int found = 0;
2274 bool connect;
2275
2276 lockdep_assert_held(&card->dapm_mutex);
2277
2278
2279 dapm_kcontrol_for_each_path(path, kcontrol) {
2280 found = 1;
2281
2282 if (e && !(strcmp(path->name, e->texts[mux])))
2283 connect = true;
2284 else
2285 connect = false;
2286
2287 soc_dapm_connect_path(path, connect, "mux update");
2288 }
2289
2290 if (found)
2291 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2292
2293 return found;
2294 }
2295
2296 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2297 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2298 struct snd_soc_dapm_update *update)
2299 {
2300 struct snd_soc_card *card = dapm->card;
2301 int ret;
2302
2303 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2304 card->update = update;
2305 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2306 card->update = NULL;
2307 mutex_unlock(&card->dapm_mutex);
2308 if (ret > 0)
2309 soc_dpcm_runtime_update(card);
2310 return ret;
2311 }
2312 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2313
2314
2315 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2316 struct snd_kcontrol *kcontrol,
2317 int connect, int rconnect)
2318 {
2319 struct snd_soc_dapm_path *path;
2320 int found = 0;
2321
2322 lockdep_assert_held(&card->dapm_mutex);
2323
2324
2325 dapm_kcontrol_for_each_path(path, kcontrol) {
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348 if (found && rconnect >= 0)
2349 soc_dapm_connect_path(path, rconnect, "mixer update");
2350 else
2351 soc_dapm_connect_path(path, connect, "mixer update");
2352 found = 1;
2353 }
2354
2355 if (found)
2356 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2357
2358 return found;
2359 }
2360
2361 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2362 struct snd_kcontrol *kcontrol, int connect,
2363 struct snd_soc_dapm_update *update)
2364 {
2365 struct snd_soc_card *card = dapm->card;
2366 int ret;
2367
2368 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2369 card->update = update;
2370 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2371 card->update = NULL;
2372 mutex_unlock(&card->dapm_mutex);
2373 if (ret > 0)
2374 soc_dpcm_runtime_update(card);
2375 return ret;
2376 }
2377 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2378
2379 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2380 char *buf)
2381 {
2382 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2383 struct snd_soc_dapm_widget *w;
2384 int count = 0;
2385 char *state = "not set";
2386
2387
2388
2389
2390
2391 if (!cmpnt->card)
2392 return 0;
2393
2394 list_for_each_entry(w, &cmpnt->card->widgets, list) {
2395 if (w->dapm != dapm)
2396 continue;
2397
2398
2399 switch (w->id) {
2400 case snd_soc_dapm_hp:
2401 case snd_soc_dapm_mic:
2402 case snd_soc_dapm_spk:
2403 case snd_soc_dapm_line:
2404 case snd_soc_dapm_micbias:
2405 case snd_soc_dapm_dac:
2406 case snd_soc_dapm_adc:
2407 case snd_soc_dapm_pga:
2408 case snd_soc_dapm_effect:
2409 case snd_soc_dapm_out_drv:
2410 case snd_soc_dapm_mixer:
2411 case snd_soc_dapm_mixer_named_ctl:
2412 case snd_soc_dapm_supply:
2413 case snd_soc_dapm_regulator_supply:
2414 case snd_soc_dapm_pinctrl:
2415 case snd_soc_dapm_clock_supply:
2416 if (w->name)
2417 count += sprintf(buf + count, "%s: %s\n",
2418 w->name, w->power ? "On":"Off");
2419 break;
2420 default:
2421 break;
2422 }
2423 }
2424
2425 switch (snd_soc_dapm_get_bias_level(dapm)) {
2426 case SND_SOC_BIAS_ON:
2427 state = "On";
2428 break;
2429 case SND_SOC_BIAS_PREPARE:
2430 state = "Prepare";
2431 break;
2432 case SND_SOC_BIAS_STANDBY:
2433 state = "Standby";
2434 break;
2435 case SND_SOC_BIAS_OFF:
2436 state = "Off";
2437 break;
2438 }
2439 count += sprintf(buf + count, "PM State: %s\n", state);
2440
2441 return count;
2442 }
2443
2444
2445 static ssize_t dapm_widget_show(struct device *dev,
2446 struct device_attribute *attr, char *buf)
2447 {
2448 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2449 struct snd_soc_dai *codec_dai;
2450 int i, count = 0;
2451
2452 mutex_lock(&rtd->card->dapm_mutex);
2453
2454 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2455 struct snd_soc_component *cmpnt = codec_dai->component;
2456
2457 count += dapm_widget_show_component(cmpnt, buf + count);
2458 }
2459
2460 mutex_unlock(&rtd->card->dapm_mutex);
2461
2462 return count;
2463 }
2464
2465 static DEVICE_ATTR_RO(dapm_widget);
2466
2467 struct attribute *soc_dapm_dev_attrs[] = {
2468 &dev_attr_dapm_widget.attr,
2469 NULL
2470 };
2471
2472 static void dapm_free_path(struct snd_soc_dapm_path *path)
2473 {
2474 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2475 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2476 list_del(&path->list_kcontrol);
2477 list_del(&path->list);
2478 kfree(path);
2479 }
2480
2481 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2482 {
2483 struct snd_soc_dapm_path *p, *next_p;
2484 enum snd_soc_dapm_direction dir;
2485
2486 list_del(&w->list);
2487
2488
2489
2490
2491
2492 snd_soc_dapm_for_each_direction(dir) {
2493 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2494 dapm_free_path(p);
2495 }
2496
2497 kfree(w->kcontrols);
2498 kfree_const(w->name);
2499 kfree_const(w->sname);
2500 kfree(w);
2501 }
2502
2503 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2504 {
2505 dapm->path_sink_cache.widget = NULL;
2506 dapm->path_source_cache.widget = NULL;
2507 }
2508
2509
2510 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2511 {
2512 struct snd_soc_dapm_widget *w, *next_w;
2513
2514 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2515 if (w->dapm != dapm)
2516 continue;
2517 snd_soc_dapm_free_widget(w);
2518 }
2519 snd_soc_dapm_reset_cache(dapm);
2520 }
2521
2522 static struct snd_soc_dapm_widget *dapm_find_widget(
2523 struct snd_soc_dapm_context *dapm, const char *pin,
2524 bool search_other_contexts)
2525 {
2526 struct snd_soc_dapm_widget *w;
2527 struct snd_soc_dapm_widget *fallback = NULL;
2528
2529 list_for_each_entry(w, &dapm->card->widgets, list) {
2530 if (!strcmp(w->name, pin)) {
2531 if (w->dapm == dapm)
2532 return w;
2533 else
2534 fallback = w;
2535 }
2536 }
2537
2538 if (search_other_contexts)
2539 return fallback;
2540
2541 return NULL;
2542 }
2543
2544 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2545 const char *pin, int status)
2546 {
2547 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2548
2549 dapm_assert_locked(dapm);
2550
2551 if (!w) {
2552 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2553 return -EINVAL;
2554 }
2555
2556 if (w->connected != status) {
2557 dapm_mark_dirty(w, "pin configuration");
2558 dapm_widget_invalidate_input_paths(w);
2559 dapm_widget_invalidate_output_paths(w);
2560 }
2561
2562 w->connected = status;
2563 if (status == 0)
2564 w->force = 0;
2565
2566 return 0;
2567 }
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2581 {
2582
2583
2584
2585
2586 if (!dapm->card || !dapm->card->instantiated)
2587 return 0;
2588
2589 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2590 }
2591 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2603 {
2604 int ret;
2605
2606 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2607 ret = snd_soc_dapm_sync_unlocked(dapm);
2608 mutex_unlock(&dapm->card->dapm_mutex);
2609 return ret;
2610 }
2611 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2612
2613 static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
2614 struct snd_soc_dapm_widget *w,
2615 int channels)
2616 {
2617 switch (w->id) {
2618 case snd_soc_dapm_aif_out:
2619 case snd_soc_dapm_aif_in:
2620 break;
2621 default:
2622 return 0;
2623 }
2624
2625 dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
2626 w->channel < channels ? "Connecting" : "Disconnecting",
2627 p->source->name, p->sink->name);
2628
2629 if (w->channel < channels)
2630 soc_dapm_connect_path(p, true, "dai update");
2631 else
2632 soc_dapm_connect_path(p, false, "dai update");
2633
2634 return 0;
2635 }
2636
2637 static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
2638 struct snd_pcm_hw_params *params,
2639 struct snd_soc_dai *dai)
2640 {
2641 int dir = substream->stream;
2642 int channels = params_channels(params);
2643 struct snd_soc_dapm_path *p;
2644 struct snd_soc_dapm_widget *w;
2645 int ret;
2646
2647 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
2648 w = dai->playback_widget;
2649 else
2650 w = dai->capture_widget;
2651
2652 if (!w)
2653 return 0;
2654
2655 dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
2656 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
2657
2658 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2659 ret = dapm_update_dai_chan(p, p->sink, channels);
2660 if (ret < 0)
2661 return ret;
2662 }
2663
2664 snd_soc_dapm_widget_for_each_source_path(w, p) {
2665 ret = dapm_update_dai_chan(p, p->source, channels);
2666 if (ret < 0)
2667 return ret;
2668 }
2669
2670 return 0;
2671 }
2672
2673 int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
2674 struct snd_pcm_hw_params *params,
2675 struct snd_soc_dai *dai)
2676 {
2677 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2678 int ret;
2679
2680 mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2681 ret = dapm_update_dai_unlocked(substream, params, dai);
2682 mutex_unlock(&rtd->card->dapm_mutex);
2683
2684 return ret;
2685 }
2686 EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2698 {
2699 enum snd_soc_dapm_direction dir;
2700 struct snd_soc_dapm_path *p;
2701 unsigned int ep;
2702
2703 switch (w->id) {
2704 case snd_soc_dapm_input:
2705
2706 if (w->dapm->card->fully_routed)
2707 return;
2708 ep = SND_SOC_DAPM_EP_SOURCE;
2709 snd_soc_dapm_widget_for_each_source_path(w, p) {
2710 if (p->source->id == snd_soc_dapm_micbias ||
2711 p->source->id == snd_soc_dapm_mic ||
2712 p->source->id == snd_soc_dapm_line ||
2713 p->source->id == snd_soc_dapm_output) {
2714 ep = 0;
2715 break;
2716 }
2717 }
2718 break;
2719 case snd_soc_dapm_output:
2720
2721 if (w->dapm->card->fully_routed)
2722 return;
2723 ep = SND_SOC_DAPM_EP_SINK;
2724 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2725 if (p->sink->id == snd_soc_dapm_spk ||
2726 p->sink->id == snd_soc_dapm_hp ||
2727 p->sink->id == snd_soc_dapm_line ||
2728 p->sink->id == snd_soc_dapm_input) {
2729 ep = 0;
2730 break;
2731 }
2732 }
2733 break;
2734 case snd_soc_dapm_line:
2735 ep = 0;
2736 snd_soc_dapm_for_each_direction(dir) {
2737 if (!list_empty(&w->edges[dir]))
2738 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2739 }
2740 break;
2741 default:
2742 return;
2743 }
2744
2745 w->is_ep = ep;
2746 }
2747
2748 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2749 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2750 const char *control)
2751 {
2752 bool dynamic_source = false;
2753 bool dynamic_sink = false;
2754
2755 if (!control)
2756 return 0;
2757
2758 switch (source->id) {
2759 case snd_soc_dapm_demux:
2760 dynamic_source = true;
2761 break;
2762 default:
2763 break;
2764 }
2765
2766 switch (sink->id) {
2767 case snd_soc_dapm_mux:
2768 case snd_soc_dapm_switch:
2769 case snd_soc_dapm_mixer:
2770 case snd_soc_dapm_mixer_named_ctl:
2771 dynamic_sink = true;
2772 break;
2773 default:
2774 break;
2775 }
2776
2777 if (dynamic_source && dynamic_sink) {
2778 dev_err(dapm->dev,
2779 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2780 source->name, control, sink->name);
2781 return -EINVAL;
2782 } else if (!dynamic_source && !dynamic_sink) {
2783 dev_err(dapm->dev,
2784 "Control not supported for path %s -> [%s] -> %s\n",
2785 source->name, control, sink->name);
2786 return -EINVAL;
2787 }
2788
2789 return 0;
2790 }
2791
2792 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2793 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2794 const char *control,
2795 int (*connected)(struct snd_soc_dapm_widget *source,
2796 struct snd_soc_dapm_widget *sink))
2797 {
2798 struct snd_soc_dapm_widget *widgets[2];
2799 enum snd_soc_dapm_direction dir;
2800 struct snd_soc_dapm_path *path;
2801 int ret;
2802
2803 if (wsink->is_supply && !wsource->is_supply) {
2804 dev_err(dapm->dev,
2805 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2806 wsource->name, wsink->name);
2807 return -EINVAL;
2808 }
2809
2810 if (connected && !wsource->is_supply) {
2811 dev_err(dapm->dev,
2812 "connected() callback only supported for supply widgets (%s -> %s)\n",
2813 wsource->name, wsink->name);
2814 return -EINVAL;
2815 }
2816
2817 if (wsource->is_supply && control) {
2818 dev_err(dapm->dev,
2819 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2820 wsource->name, control, wsink->name);
2821 return -EINVAL;
2822 }
2823
2824 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2825 if (ret)
2826 return ret;
2827
2828 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2829 if (!path)
2830 return -ENOMEM;
2831
2832 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2833 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2834 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2835 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2836
2837 path->connected = connected;
2838 INIT_LIST_HEAD(&path->list);
2839 INIT_LIST_HEAD(&path->list_kcontrol);
2840
2841 if (wsource->is_supply || wsink->is_supply)
2842 path->is_supply = 1;
2843
2844
2845 if (control == NULL) {
2846 path->connect = 1;
2847 } else {
2848 switch (wsource->id) {
2849 case snd_soc_dapm_demux:
2850 ret = dapm_connect_mux(dapm, path, control, wsource);
2851 if (ret)
2852 goto err;
2853 break;
2854 default:
2855 break;
2856 }
2857
2858 switch (wsink->id) {
2859 case snd_soc_dapm_mux:
2860 ret = dapm_connect_mux(dapm, path, control, wsink);
2861 if (ret != 0)
2862 goto err;
2863 break;
2864 case snd_soc_dapm_switch:
2865 case snd_soc_dapm_mixer:
2866 case snd_soc_dapm_mixer_named_ctl:
2867 ret = dapm_connect_mixer(dapm, path, control);
2868 if (ret != 0)
2869 goto err;
2870 break;
2871 default:
2872 break;
2873 }
2874 }
2875
2876 list_add(&path->list, &dapm->card->paths);
2877 snd_soc_dapm_for_each_direction(dir)
2878 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2879
2880 snd_soc_dapm_for_each_direction(dir) {
2881 dapm_update_widget_flags(widgets[dir]);
2882 dapm_mark_dirty(widgets[dir], "Route added");
2883 }
2884
2885 if (dapm->card->instantiated && path->connect)
2886 dapm_path_invalidate(path);
2887
2888 return 0;
2889 err:
2890 kfree(path);
2891 return ret;
2892 }
2893
2894 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2895 const struct snd_soc_dapm_route *route)
2896 {
2897 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2898 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2899 const char *sink;
2900 const char *source;
2901 char prefixed_sink[80];
2902 char prefixed_source[80];
2903 const char *prefix;
2904 unsigned int sink_ref = 0;
2905 unsigned int source_ref = 0;
2906 int ret;
2907
2908 prefix = soc_dapm_prefix(dapm);
2909 if (prefix) {
2910 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2911 prefix, route->sink);
2912 sink = prefixed_sink;
2913 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2914 prefix, route->source);
2915 source = prefixed_source;
2916 } else {
2917 sink = route->sink;
2918 source = route->source;
2919 }
2920
2921 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2922 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2923
2924 if (wsink && wsource)
2925 goto skip_search;
2926
2927
2928
2929
2930
2931 list_for_each_entry(w, &dapm->card->widgets, list) {
2932 if (!wsink && !(strcmp(w->name, sink))) {
2933 wtsink = w;
2934 if (w->dapm == dapm) {
2935 wsink = w;
2936 if (wsource)
2937 break;
2938 }
2939 sink_ref++;
2940 if (sink_ref > 1)
2941 dev_warn(dapm->dev,
2942 "ASoC: sink widget %s overwritten\n",
2943 w->name);
2944 continue;
2945 }
2946 if (!wsource && !(strcmp(w->name, source))) {
2947 wtsource = w;
2948 if (w->dapm == dapm) {
2949 wsource = w;
2950 if (wsink)
2951 break;
2952 }
2953 source_ref++;
2954 if (source_ref > 1)
2955 dev_warn(dapm->dev,
2956 "ASoC: source widget %s overwritten\n",
2957 w->name);
2958 }
2959 }
2960
2961 if (!wsink)
2962 wsink = wtsink;
2963 if (!wsource)
2964 wsource = wtsource;
2965
2966 if (wsource == NULL) {
2967 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2968 route->source);
2969 return -ENODEV;
2970 }
2971 if (wsink == NULL) {
2972 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2973 route->sink);
2974 return -ENODEV;
2975 }
2976
2977 skip_search:
2978 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2979 dapm_wcache_update(&dapm->path_source_cache, wsource);
2980
2981 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2982 route->connected);
2983 if (ret)
2984 goto err;
2985
2986 return 0;
2987 err:
2988 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2989 source, route->control, sink);
2990 return ret;
2991 }
2992
2993 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2994 const struct snd_soc_dapm_route *route)
2995 {
2996 struct snd_soc_dapm_widget *wsource, *wsink;
2997 struct snd_soc_dapm_path *path, *p;
2998 const char *sink;
2999 const char *source;
3000 char prefixed_sink[80];
3001 char prefixed_source[80];
3002 const char *prefix;
3003
3004 if (route->control) {
3005 dev_err(dapm->dev,
3006 "ASoC: Removal of routes with controls not supported\n");
3007 return -EINVAL;
3008 }
3009
3010 prefix = soc_dapm_prefix(dapm);
3011 if (prefix) {
3012 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
3013 prefix, route->sink);
3014 sink = prefixed_sink;
3015 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
3016 prefix, route->source);
3017 source = prefixed_source;
3018 } else {
3019 sink = route->sink;
3020 source = route->source;
3021 }
3022
3023 path = NULL;
3024 list_for_each_entry(p, &dapm->card->paths, list) {
3025 if (strcmp(p->source->name, source) != 0)
3026 continue;
3027 if (strcmp(p->sink->name, sink) != 0)
3028 continue;
3029 path = p;
3030 break;
3031 }
3032
3033 if (path) {
3034 wsource = path->source;
3035 wsink = path->sink;
3036
3037 dapm_mark_dirty(wsource, "Route removed");
3038 dapm_mark_dirty(wsink, "Route removed");
3039 if (path->connect)
3040 dapm_path_invalidate(path);
3041
3042 dapm_free_path(path);
3043
3044
3045 dapm_update_widget_flags(wsource);
3046 dapm_update_widget_flags(wsink);
3047 } else {
3048 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
3049 source, sink);
3050 }
3051
3052 return 0;
3053 }
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
3069 const struct snd_soc_dapm_route *route, int num)
3070 {
3071 int i, r, ret = 0;
3072
3073 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3074 for (i = 0; i < num; i++) {
3075 r = snd_soc_dapm_add_route(dapm, route);
3076 if (r < 0) {
3077 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
3078 route->source,
3079 route->control ? route->control : "direct",
3080 route->sink);
3081 ret = r;
3082 }
3083 route++;
3084 }
3085 mutex_unlock(&dapm->card->dapm_mutex);
3086
3087 return ret;
3088 }
3089 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
3100 const struct snd_soc_dapm_route *route, int num)
3101 {
3102 int i;
3103
3104 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3105 for (i = 0; i < num; i++) {
3106 snd_soc_dapm_del_route(dapm, route);
3107 route++;
3108 }
3109 mutex_unlock(&dapm->card->dapm_mutex);
3110
3111 return 0;
3112 }
3113 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
3114
3115 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
3116 const struct snd_soc_dapm_route *route)
3117 {
3118 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
3119 route->source,
3120 true);
3121 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
3122 route->sink,
3123 true);
3124 struct snd_soc_dapm_path *path;
3125 int count = 0;
3126
3127 if (!source) {
3128 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
3129 route->source);
3130 return -ENODEV;
3131 }
3132
3133 if (!sink) {
3134 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
3135 route->sink);
3136 return -ENODEV;
3137 }
3138
3139 if (route->control || route->connected)
3140 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
3141 route->source, route->sink);
3142
3143 snd_soc_dapm_widget_for_each_sink_path(source, path) {
3144 if (path->sink == sink) {
3145 path->weak = 1;
3146 count++;
3147 }
3148 }
3149
3150 if (count == 0)
3151 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
3152 route->source, route->sink);
3153 if (count > 1)
3154 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
3155 count, route->source, route->sink);
3156
3157 return 0;
3158 }
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
3177 const struct snd_soc_dapm_route *route, int num)
3178 {
3179 int i, err;
3180 int ret = 0;
3181
3182 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3183 for (i = 0; i < num; i++) {
3184 err = snd_soc_dapm_weak_route(dapm, route);
3185 if (err)
3186 ret = err;
3187 route++;
3188 }
3189 mutex_unlock(&dapm->card->dapm_mutex);
3190
3191 return ret;
3192 }
3193 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
3204 {
3205 struct snd_soc_dapm_widget *w;
3206 unsigned int val;
3207
3208 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3209
3210 list_for_each_entry(w, &card->widgets, list)
3211 {
3212 if (w->new)
3213 continue;
3214
3215 if (w->num_kcontrols) {
3216 w->kcontrols = kcalloc(w->num_kcontrols,
3217 sizeof(struct snd_kcontrol *),
3218 GFP_KERNEL);
3219 if (!w->kcontrols) {
3220 mutex_unlock(&card->dapm_mutex);
3221 return -ENOMEM;
3222 }
3223 }
3224
3225 switch(w->id) {
3226 case snd_soc_dapm_switch:
3227 case snd_soc_dapm_mixer:
3228 case snd_soc_dapm_mixer_named_ctl:
3229 dapm_new_mixer(w);
3230 break;
3231 case snd_soc_dapm_mux:
3232 case snd_soc_dapm_demux:
3233 dapm_new_mux(w);
3234 break;
3235 case snd_soc_dapm_pga:
3236 case snd_soc_dapm_effect:
3237 case snd_soc_dapm_out_drv:
3238 dapm_new_pga(w);
3239 break;
3240 case snd_soc_dapm_dai_link:
3241 dapm_new_dai_link(w);
3242 break;
3243 default:
3244 break;
3245 }
3246
3247
3248 if (w->reg >= 0) {
3249 soc_dapm_read(w->dapm, w->reg, &val);
3250 val = val >> w->shift;
3251 val &= w->mask;
3252 if (val == w->on_val)
3253 w->power = 1;
3254 }
3255
3256 w->new = 1;
3257
3258 dapm_mark_dirty(w, "new widget");
3259 dapm_debugfs_add_widget(w);
3260 }
3261
3262 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
3263 mutex_unlock(&card->dapm_mutex);
3264 return 0;
3265 }
3266 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3278 struct snd_ctl_elem_value *ucontrol)
3279 {
3280 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3281 struct snd_soc_card *card = dapm->card;
3282 struct soc_mixer_control *mc =
3283 (struct soc_mixer_control *)kcontrol->private_value;
3284 int reg = mc->reg;
3285 unsigned int shift = mc->shift;
3286 int max = mc->max;
3287 unsigned int width = fls(max);
3288 unsigned int mask = (1 << fls(max)) - 1;
3289 unsigned int invert = mc->invert;
3290 unsigned int reg_val, val, rval = 0;
3291 int ret = 0;
3292
3293 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3294 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3295 ret = soc_dapm_read(dapm, reg, ®_val);
3296 val = (reg_val >> shift) & mask;
3297
3298 if (ret == 0 && reg != mc->rreg)
3299 ret = soc_dapm_read(dapm, mc->rreg, ®_val);
3300
3301 if (snd_soc_volsw_is_stereo(mc))
3302 rval = (reg_val >> mc->rshift) & mask;
3303 } else {
3304 reg_val = dapm_kcontrol_get_value(kcontrol);
3305 val = reg_val & mask;
3306
3307 if (snd_soc_volsw_is_stereo(mc))
3308 rval = (reg_val >> width) & mask;
3309 }
3310 mutex_unlock(&card->dapm_mutex);
3311
3312 if (ret)
3313 return ret;
3314
3315 if (invert)
3316 ucontrol->value.integer.value[0] = max - val;
3317 else
3318 ucontrol->value.integer.value[0] = val;
3319
3320 if (snd_soc_volsw_is_stereo(mc)) {
3321 if (invert)
3322 ucontrol->value.integer.value[1] = max - rval;
3323 else
3324 ucontrol->value.integer.value[1] = rval;
3325 }
3326
3327 return ret;
3328 }
3329 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3341 struct snd_ctl_elem_value *ucontrol)
3342 {
3343 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3344 struct snd_soc_card *card = dapm->card;
3345 struct soc_mixer_control *mc =
3346 (struct soc_mixer_control *)kcontrol->private_value;
3347 int reg = mc->reg;
3348 unsigned int shift = mc->shift;
3349 int max = mc->max;
3350 unsigned int width = fls(max);
3351 unsigned int mask = (1 << width) - 1;
3352 unsigned int invert = mc->invert;
3353 unsigned int val, rval = 0;
3354 int connect, rconnect = -1, change, reg_change = 0;
3355 struct snd_soc_dapm_update update = {};
3356 int ret = 0;
3357
3358 val = (ucontrol->value.integer.value[0] & mask);
3359 connect = !!val;
3360
3361 if (invert)
3362 val = max - val;
3363
3364 if (snd_soc_volsw_is_stereo(mc)) {
3365 rval = (ucontrol->value.integer.value[1] & mask);
3366 rconnect = !!rval;
3367 if (invert)
3368 rval = max - rval;
3369 }
3370
3371 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3372
3373
3374 if (width > sizeof(unsigned int) * 8 / 2)
3375 dev_warn(dapm->dev,
3376 "ASoC: control %s field width limit exceeded\n",
3377 kcontrol->id.name);
3378 change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
3379
3380 if (reg != SND_SOC_NOPM) {
3381 val = val << shift;
3382 rval = rval << mc->rshift;
3383
3384 reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
3385
3386 if (snd_soc_volsw_is_stereo(mc))
3387 reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
3388 mask << mc->rshift,
3389 rval);
3390 }
3391
3392 if (change || reg_change) {
3393 if (reg_change) {
3394 if (snd_soc_volsw_is_stereo(mc)) {
3395 update.has_second_set = true;
3396 update.reg2 = mc->rreg;
3397 update.mask2 = mask << mc->rshift;
3398 update.val2 = rval;
3399 }
3400 update.kcontrol = kcontrol;
3401 update.reg = reg;
3402 update.mask = mask << shift;
3403 update.val = val;
3404 card->update = &update;
3405 }
3406 change |= reg_change;
3407
3408 ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
3409 rconnect);
3410
3411 card->update = NULL;
3412 }
3413
3414 mutex_unlock(&card->dapm_mutex);
3415
3416 if (ret > 0)
3417 soc_dpcm_runtime_update(card);
3418
3419 return change;
3420 }
3421 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3433 struct snd_ctl_elem_value *ucontrol)
3434 {
3435 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3436 struct snd_soc_card *card = dapm->card;
3437 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3438 unsigned int reg_val, val;
3439
3440 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3441 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3442 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3443 if (ret) {
3444 mutex_unlock(&card->dapm_mutex);
3445 return ret;
3446 }
3447 } else {
3448 reg_val = dapm_kcontrol_get_value(kcontrol);
3449 }
3450 mutex_unlock(&card->dapm_mutex);
3451
3452 val = (reg_val >> e->shift_l) & e->mask;
3453 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3454 if (e->shift_l != e->shift_r) {
3455 val = (reg_val >> e->shift_r) & e->mask;
3456 val = snd_soc_enum_val_to_item(e, val);
3457 ucontrol->value.enumerated.item[1] = val;
3458 }
3459
3460 return 0;
3461 }
3462 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3474 struct snd_ctl_elem_value *ucontrol)
3475 {
3476 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3477 struct snd_soc_card *card = dapm->card;
3478 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3479 unsigned int *item = ucontrol->value.enumerated.item;
3480 unsigned int val, change, reg_change = 0;
3481 unsigned int mask;
3482 struct snd_soc_dapm_update update = {};
3483 int ret = 0;
3484
3485 if (item[0] >= e->items)
3486 return -EINVAL;
3487
3488 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3489 mask = e->mask << e->shift_l;
3490 if (e->shift_l != e->shift_r) {
3491 if (item[1] > e->items)
3492 return -EINVAL;
3493 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
3494 mask |= e->mask << e->shift_r;
3495 }
3496
3497 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3498
3499 change = dapm_kcontrol_set_value(kcontrol, val);
3500
3501 if (e->reg != SND_SOC_NOPM)
3502 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3503
3504 if (change || reg_change) {
3505 if (reg_change) {
3506 update.kcontrol = kcontrol;
3507 update.reg = e->reg;
3508 update.mask = mask;
3509 update.val = val;
3510 card->update = &update;
3511 }
3512 change |= reg_change;
3513
3514 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3515
3516 card->update = NULL;
3517 }
3518
3519 mutex_unlock(&card->dapm_mutex);
3520
3521 if (ret > 0)
3522 soc_dpcm_runtime_update(card);
3523
3524 return change;
3525 }
3526 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3537 struct snd_ctl_elem_info *uinfo)
3538 {
3539 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3540 uinfo->count = 1;
3541 uinfo->value.integer.min = 0;
3542 uinfo->value.integer.max = 1;
3543
3544 return 0;
3545 }
3546 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3547
3548
3549
3550
3551
3552
3553
3554 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3555 struct snd_ctl_elem_value *ucontrol)
3556 {
3557 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3558 const char *pin = (const char *)kcontrol->private_value;
3559
3560 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3561
3562 ucontrol->value.integer.value[0] =
3563 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3564
3565 mutex_unlock(&card->dapm_mutex);
3566
3567 return 0;
3568 }
3569 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3570
3571
3572
3573
3574
3575
3576
3577 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3578 struct snd_ctl_elem_value *ucontrol)
3579 {
3580 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3581 const char *pin = (const char *)kcontrol->private_value;
3582
3583 if (ucontrol->value.integer.value[0])
3584 snd_soc_dapm_enable_pin(&card->dapm, pin);
3585 else
3586 snd_soc_dapm_disable_pin(&card->dapm, pin);
3587
3588 snd_soc_dapm_sync(&card->dapm);
3589 return 0;
3590 }
3591 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3592
3593 struct snd_soc_dapm_widget *
3594 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3595 const struct snd_soc_dapm_widget *widget)
3596 {
3597 enum snd_soc_dapm_direction dir;
3598 struct snd_soc_dapm_widget *w;
3599 const char *prefix;
3600 int ret;
3601
3602 if ((w = dapm_cnew_widget(widget)) == NULL)
3603 return ERR_PTR(-ENOMEM);
3604
3605 switch (w->id) {
3606 case snd_soc_dapm_regulator_supply:
3607 w->regulator = devm_regulator_get(dapm->dev, w->name);
3608 if (IS_ERR(w->regulator)) {
3609 ret = PTR_ERR(w->regulator);
3610 goto request_failed;
3611 }
3612
3613 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3614 ret = regulator_allow_bypass(w->regulator, true);
3615 if (ret != 0)
3616 dev_warn(dapm->dev,
3617 "ASoC: Failed to bypass %s: %d\n",
3618 w->name, ret);
3619 }
3620 break;
3621 case snd_soc_dapm_pinctrl:
3622 w->pinctrl = devm_pinctrl_get(dapm->dev);
3623 if (IS_ERR(w->pinctrl)) {
3624 ret = PTR_ERR(w->pinctrl);
3625 goto request_failed;
3626 }
3627 break;
3628 case snd_soc_dapm_clock_supply:
3629 w->clk = devm_clk_get(dapm->dev, w->name);
3630 if (IS_ERR(w->clk)) {
3631 ret = PTR_ERR(w->clk);
3632 goto request_failed;
3633 }
3634 break;
3635 default:
3636 break;
3637 }
3638
3639 prefix = soc_dapm_prefix(dapm);
3640 if (prefix)
3641 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3642 else
3643 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3644 if (w->name == NULL) {
3645 kfree_const(w->sname);
3646 kfree(w);
3647 return ERR_PTR(-ENOMEM);
3648 }
3649
3650 switch (w->id) {
3651 case snd_soc_dapm_mic:
3652 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3653 w->power_check = dapm_generic_check_power;
3654 break;
3655 case snd_soc_dapm_input:
3656 if (!dapm->card->fully_routed)
3657 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3658 w->power_check = dapm_generic_check_power;
3659 break;
3660 case snd_soc_dapm_spk:
3661 case snd_soc_dapm_hp:
3662 w->is_ep = SND_SOC_DAPM_EP_SINK;
3663 w->power_check = dapm_generic_check_power;
3664 break;
3665 case snd_soc_dapm_output:
3666 if (!dapm->card->fully_routed)
3667 w->is_ep = SND_SOC_DAPM_EP_SINK;
3668 w->power_check = dapm_generic_check_power;
3669 break;
3670 case snd_soc_dapm_vmid:
3671 case snd_soc_dapm_siggen:
3672 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3673 w->power_check = dapm_always_on_check_power;
3674 break;
3675 case snd_soc_dapm_sink:
3676 w->is_ep = SND_SOC_DAPM_EP_SINK;
3677 w->power_check = dapm_always_on_check_power;
3678 break;
3679
3680 case snd_soc_dapm_mux:
3681 case snd_soc_dapm_demux:
3682 case snd_soc_dapm_switch:
3683 case snd_soc_dapm_mixer:
3684 case snd_soc_dapm_mixer_named_ctl:
3685 case snd_soc_dapm_adc:
3686 case snd_soc_dapm_aif_out:
3687 case snd_soc_dapm_dac:
3688 case snd_soc_dapm_aif_in:
3689 case snd_soc_dapm_pga:
3690 case snd_soc_dapm_buffer:
3691 case snd_soc_dapm_scheduler:
3692 case snd_soc_dapm_effect:
3693 case snd_soc_dapm_src:
3694 case snd_soc_dapm_asrc:
3695 case snd_soc_dapm_encoder:
3696 case snd_soc_dapm_decoder:
3697 case snd_soc_dapm_out_drv:
3698 case snd_soc_dapm_micbias:
3699 case snd_soc_dapm_line:
3700 case snd_soc_dapm_dai_link:
3701 case snd_soc_dapm_dai_out:
3702 case snd_soc_dapm_dai_in:
3703 w->power_check = dapm_generic_check_power;
3704 break;
3705 case snd_soc_dapm_supply:
3706 case snd_soc_dapm_regulator_supply:
3707 case snd_soc_dapm_pinctrl:
3708 case snd_soc_dapm_clock_supply:
3709 case snd_soc_dapm_kcontrol:
3710 w->is_supply = 1;
3711 w->power_check = dapm_supply_check_power;
3712 break;
3713 default:
3714 w->power_check = dapm_always_on_check_power;
3715 break;
3716 }
3717
3718 w->dapm = dapm;
3719 INIT_LIST_HEAD(&w->list);
3720 INIT_LIST_HEAD(&w->dirty);
3721 list_add_tail(&w->list, &dapm->card->widgets);
3722
3723 snd_soc_dapm_for_each_direction(dir) {
3724 INIT_LIST_HEAD(&w->edges[dir]);
3725 w->endpoints[dir] = -1;
3726 }
3727
3728
3729 w->connected = 1;
3730 return w;
3731
3732 request_failed:
3733 if (ret != -EPROBE_DEFER)
3734 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3735 w->name, ret);
3736
3737 kfree_const(w->sname);
3738 kfree(w);
3739 return ERR_PTR(ret);
3740 }
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751 struct snd_soc_dapm_widget *
3752 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3753 const struct snd_soc_dapm_widget *widget)
3754 {
3755 struct snd_soc_dapm_widget *w;
3756
3757 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3758 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3759 mutex_unlock(&dapm->card->dapm_mutex);
3760
3761 return w;
3762 }
3763 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3776 const struct snd_soc_dapm_widget *widget,
3777 int num)
3778 {
3779 struct snd_soc_dapm_widget *w;
3780 int i;
3781 int ret = 0;
3782
3783 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3784 for (i = 0; i < num; i++) {
3785 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3786 if (IS_ERR(w)) {
3787 ret = PTR_ERR(w);
3788 break;
3789 }
3790 widget++;
3791 }
3792 mutex_unlock(&dapm->card->dapm_mutex);
3793 return ret;
3794 }
3795 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3796
3797 static int
3798 snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
3799 struct snd_pcm_substream *substream)
3800 {
3801 struct snd_soc_dapm_path *path;
3802 struct snd_soc_dai *source, *sink;
3803 struct snd_soc_pcm_runtime *rtd = substream->private_data;
3804 struct snd_pcm_hw_params *params = NULL;
3805 const struct snd_soc_pcm_stream *config = NULL;
3806 struct snd_pcm_runtime *runtime = NULL;
3807 unsigned int fmt;
3808 int ret = 0;
3809
3810 params = kzalloc(sizeof(*params), GFP_KERNEL);
3811 if (!params)
3812 return -ENOMEM;
3813
3814 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3815 if (!runtime) {
3816 ret = -ENOMEM;
3817 goto out;
3818 }
3819
3820 substream->runtime = runtime;
3821
3822 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3823 snd_soc_dapm_widget_for_each_source_path(w, path) {
3824 source = path->source->priv;
3825
3826 ret = snd_soc_dai_startup(source, substream);
3827 if (ret < 0) {
3828 dev_err(source->dev,
3829 "ASoC: startup() failed: %d\n", ret);
3830 goto out;
3831 }
3832 source->active++;
3833 }
3834
3835 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3836 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3837 sink = path->sink->priv;
3838
3839 ret = snd_soc_dai_startup(sink, substream);
3840 if (ret < 0) {
3841 dev_err(sink->dev,
3842 "ASoC: startup() failed: %d\n", ret);
3843 goto out;
3844 }
3845 sink->active++;
3846 }
3847
3848 substream->hw_opened = 1;
3849
3850
3851
3852
3853
3854
3855 config = rtd->dai_link->params + rtd->params_select;
3856 if (WARN_ON(!config)) {
3857 dev_err(w->dapm->dev, "ASoC: link config missing\n");
3858 ret = -EINVAL;
3859 goto out;
3860 }
3861
3862
3863 if (config->formats) {
3864 fmt = ffs(config->formats) - 1;
3865 } else {
3866 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3867 config->formats);
3868
3869 ret = -EINVAL;
3870 goto out;
3871 }
3872
3873 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3874 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3875 config->rate_min;
3876 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3877 config->rate_max;
3878 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3879 = config->channels_min;
3880 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3881 = config->channels_max;
3882
3883 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3884 snd_soc_dapm_widget_for_each_source_path(w, path) {
3885 source = path->source->priv;
3886
3887 ret = snd_soc_dai_hw_params(source, substream, params);
3888 if (ret < 0)
3889 goto out;
3890
3891 dapm_update_dai_unlocked(substream, params, source);
3892 }
3893
3894 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3895 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3896 sink = path->sink->priv;
3897
3898 ret = snd_soc_dai_hw_params(sink, substream, params);
3899 if (ret < 0)
3900 goto out;
3901
3902 dapm_update_dai_unlocked(substream, params, sink);
3903 }
3904
3905 runtime->format = params_format(params);
3906 runtime->subformat = params_subformat(params);
3907 runtime->channels = params_channels(params);
3908 runtime->rate = params_rate(params);
3909
3910 out:
3911 kfree(params);
3912 return ret;
3913 }
3914
3915 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3916 struct snd_kcontrol *kcontrol, int event)
3917 {
3918 struct snd_soc_dapm_path *path;
3919 struct snd_soc_dai *source, *sink;
3920 struct snd_pcm_substream *substream = w->priv;
3921 int ret = 0, saved_stream = substream->stream;
3922
3923 if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3924 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3925 return -EINVAL;
3926
3927 switch (event) {
3928 case SND_SOC_DAPM_PRE_PMU:
3929 ret = snd_soc_dai_link_event_pre_pmu(w, substream);
3930 if (ret < 0)
3931 goto out;
3932
3933 break;
3934
3935 case SND_SOC_DAPM_POST_PMU:
3936 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3937 sink = path->sink->priv;
3938
3939 ret = snd_soc_dai_digital_mute(sink, 0,
3940 SNDRV_PCM_STREAM_PLAYBACK);
3941 if (ret != 0 && ret != -ENOTSUPP)
3942 dev_warn(sink->dev,
3943 "ASoC: Failed to unmute: %d\n", ret);
3944 ret = 0;
3945 }
3946 break;
3947
3948 case SND_SOC_DAPM_PRE_PMD:
3949 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3950 sink = path->sink->priv;
3951
3952 ret = snd_soc_dai_digital_mute(sink, 1,
3953 SNDRV_PCM_STREAM_PLAYBACK);
3954 if (ret != 0 && ret != -ENOTSUPP)
3955 dev_warn(sink->dev,
3956 "ASoC: Failed to mute: %d\n", ret);
3957 ret = 0;
3958 }
3959
3960 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3961 snd_soc_dapm_widget_for_each_source_path(w, path) {
3962 source = path->source->priv;
3963 snd_soc_dai_hw_free(source, substream);
3964 }
3965
3966 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3967 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3968 sink = path->sink->priv;
3969 snd_soc_dai_hw_free(sink, substream);
3970 }
3971
3972 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3973 snd_soc_dapm_widget_for_each_source_path(w, path) {
3974 source = path->source->priv;
3975 source->active--;
3976 snd_soc_dai_shutdown(source, substream);
3977 }
3978
3979 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3980 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3981 sink = path->sink->priv;
3982 sink->active--;
3983 snd_soc_dai_shutdown(sink, substream);
3984 }
3985 break;
3986
3987 case SND_SOC_DAPM_POST_PMD:
3988 kfree(substream->runtime);
3989 break;
3990
3991 default:
3992 WARN(1, "Unknown event %d\n", event);
3993 ret = -EINVAL;
3994 }
3995
3996 out:
3997
3998 substream->stream = saved_stream;
3999 return ret;
4000 }
4001
4002 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
4003 struct snd_ctl_elem_value *ucontrol)
4004 {
4005 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4006 struct snd_soc_pcm_runtime *rtd = w->priv;
4007
4008 ucontrol->value.enumerated.item[0] = rtd->params_select;
4009
4010 return 0;
4011 }
4012
4013 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
4014 struct snd_ctl_elem_value *ucontrol)
4015 {
4016 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4017 struct snd_soc_pcm_runtime *rtd = w->priv;
4018
4019
4020 if (w->power)
4021 return -EBUSY;
4022
4023 if (ucontrol->value.enumerated.item[0] == rtd->params_select)
4024 return 0;
4025
4026 if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
4027 return -EINVAL;
4028
4029 rtd->params_select = ucontrol->value.enumerated.item[0];
4030
4031 return 0;
4032 }
4033
4034 static void
4035 snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
4036 unsigned long *private_value,
4037 int num_params,
4038 const char **w_param_text)
4039 {
4040 int count;
4041
4042 devm_kfree(card->dev, (void *)*private_value);
4043
4044 if (!w_param_text)
4045 return;
4046
4047 for (count = 0 ; count < num_params; count++)
4048 devm_kfree(card->dev, (void *)w_param_text[count]);
4049 devm_kfree(card->dev, w_param_text);
4050 }
4051
4052 static struct snd_kcontrol_new *
4053 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
4054 char *link_name,
4055 const struct snd_soc_pcm_stream *params,
4056 int num_params, const char **w_param_text,
4057 unsigned long *private_value)
4058 {
4059 struct soc_enum w_param_enum[] = {
4060 SOC_ENUM_SINGLE(0, 0, 0, NULL),
4061 };
4062 struct snd_kcontrol_new kcontrol_dai_link[] = {
4063 SOC_ENUM_EXT(NULL, w_param_enum[0],
4064 snd_soc_dapm_dai_link_get,
4065 snd_soc_dapm_dai_link_put),
4066 };
4067 struct snd_kcontrol_new *kcontrol_news;
4068 const struct snd_soc_pcm_stream *config = params;
4069 int count;
4070
4071 for (count = 0 ; count < num_params; count++) {
4072 if (!config->stream_name) {
4073 dev_warn(card->dapm.dev,
4074 "ASoC: anonymous config %d for dai link %s\n",
4075 count, link_name);
4076 w_param_text[count] =
4077 devm_kasprintf(card->dev, GFP_KERNEL,
4078 "Anonymous Configuration %d",
4079 count);
4080 } else {
4081 w_param_text[count] = devm_kmemdup(card->dev,
4082 config->stream_name,
4083 strlen(config->stream_name) + 1,
4084 GFP_KERNEL);
4085 }
4086 if (!w_param_text[count])
4087 goto outfree_w_param;
4088 config++;
4089 }
4090
4091 w_param_enum[0].items = num_params;
4092 w_param_enum[0].texts = w_param_text;
4093
4094 *private_value =
4095 (unsigned long) devm_kmemdup(card->dev,
4096 (void *)(kcontrol_dai_link[0].private_value),
4097 sizeof(struct soc_enum), GFP_KERNEL);
4098 if (!*private_value) {
4099 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4100 link_name);
4101 goto outfree_w_param;
4102 }
4103 kcontrol_dai_link[0].private_value = *private_value;
4104
4105 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
4106 sizeof(struct snd_kcontrol_new),
4107 GFP_KERNEL);
4108 if (!kcontrol_news) {
4109 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4110 link_name);
4111 goto outfree_w_param;
4112 }
4113 return kcontrol_news;
4114
4115 outfree_w_param:
4116 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
4117 return NULL;
4118 }
4119
4120 static struct snd_soc_dapm_widget *
4121 snd_soc_dapm_new_dai(struct snd_soc_card *card,
4122 struct snd_pcm_substream *substream,
4123 char *id)
4124 {
4125 struct snd_soc_pcm_runtime *rtd = substream->private_data;
4126 struct snd_soc_dapm_widget template;
4127 struct snd_soc_dapm_widget *w;
4128 const char **w_param_text;
4129 unsigned long private_value = 0;
4130 char *link_name;
4131 int ret;
4132
4133 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
4134 rtd->dai_link->name, id);
4135 if (!link_name)
4136 return ERR_PTR(-ENOMEM);
4137
4138 memset(&template, 0, sizeof(template));
4139 template.reg = SND_SOC_NOPM;
4140 template.id = snd_soc_dapm_dai_link;
4141 template.name = link_name;
4142 template.event = snd_soc_dai_link_event;
4143 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
4144 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
4145 template.kcontrol_news = NULL;
4146
4147
4148 if (rtd->dai_link->num_params > 1) {
4149 w_param_text = devm_kcalloc(card->dev,
4150 rtd->dai_link->num_params,
4151 sizeof(char *), GFP_KERNEL);
4152 if (!w_param_text) {
4153 ret = -ENOMEM;
4154 goto param_fail;
4155 }
4156
4157 template.num_kcontrols = 1;
4158 template.kcontrol_news =
4159 snd_soc_dapm_alloc_kcontrol(card,
4160 link_name,
4161 rtd->dai_link->params,
4162 rtd->dai_link->num_params,
4163 w_param_text, &private_value);
4164 if (!template.kcontrol_news) {
4165 ret = -ENOMEM;
4166 goto param_fail;
4167 }
4168 } else {
4169 w_param_text = NULL;
4170 }
4171 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4172
4173 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4174 if (IS_ERR(w)) {
4175 ret = PTR_ERR(w);
4176 goto outfree_kcontrol_news;
4177 }
4178
4179 w->priv = substream;
4180
4181 return w;
4182
4183 outfree_kcontrol_news:
4184 devm_kfree(card->dev, (void *)template.kcontrol_news);
4185 snd_soc_dapm_free_kcontrol(card, &private_value,
4186 rtd->dai_link->num_params, w_param_text);
4187 param_fail:
4188 devm_kfree(card->dev, link_name);
4189 return ERR_PTR(ret);
4190 }
4191
4192 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4193 struct snd_soc_dai *dai)
4194 {
4195 struct snd_soc_dapm_widget template;
4196 struct snd_soc_dapm_widget *w;
4197
4198 WARN_ON(dapm->dev != dai->dev);
4199
4200 memset(&template, 0, sizeof(template));
4201 template.reg = SND_SOC_NOPM;
4202
4203 if (dai->driver->playback.stream_name) {
4204 template.id = snd_soc_dapm_dai_in;
4205 template.name = dai->driver->playback.stream_name;
4206 template.sname = dai->driver->playback.stream_name;
4207
4208 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4209 template.name);
4210
4211 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4212 if (IS_ERR(w))
4213 return PTR_ERR(w);
4214
4215 w->priv = dai;
4216 dai->playback_widget = w;
4217 }
4218
4219 if (dai->driver->capture.stream_name) {
4220 template.id = snd_soc_dapm_dai_out;
4221 template.name = dai->driver->capture.stream_name;
4222 template.sname = dai->driver->capture.stream_name;
4223
4224 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4225 template.name);
4226
4227 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4228 if (IS_ERR(w))
4229 return PTR_ERR(w);
4230
4231 w->priv = dai;
4232 dai->capture_widget = w;
4233 }
4234
4235 return 0;
4236 }
4237
4238 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4239 {
4240 struct snd_soc_dapm_widget *dai_w, *w;
4241 struct snd_soc_dapm_widget *src, *sink;
4242 struct snd_soc_dai *dai;
4243
4244
4245 list_for_each_entry(dai_w, &card->widgets, list) {
4246 switch (dai_w->id) {
4247 case snd_soc_dapm_dai_in:
4248 case snd_soc_dapm_dai_out:
4249 break;
4250 default:
4251 continue;
4252 }
4253
4254
4255 if (!dai_w->priv) {
4256 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4257 dai_w->name);
4258 continue;
4259 }
4260
4261 dai = dai_w->priv;
4262
4263
4264 list_for_each_entry(w, &card->widgets, list) {
4265 if (w->dapm != dai_w->dapm)
4266 continue;
4267
4268 switch (w->id) {
4269 case snd_soc_dapm_dai_in:
4270 case snd_soc_dapm_dai_out:
4271 continue;
4272 default:
4273 break;
4274 }
4275
4276 if (!w->sname || !strstr(w->sname, dai_w->sname))
4277 continue;
4278
4279 if (dai_w->id == snd_soc_dapm_dai_in) {
4280 src = dai_w;
4281 sink = w;
4282 } else {
4283 src = w;
4284 sink = dai_w;
4285 }
4286 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4287 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4288 }
4289 }
4290
4291 return 0;
4292 }
4293
4294 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
4295 struct snd_soc_pcm_runtime *rtd)
4296 {
4297 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
4298 struct snd_soc_dai *codec_dai;
4299 struct snd_soc_dapm_widget *playback = NULL, *capture = NULL;
4300 struct snd_soc_dapm_widget *codec, *playback_cpu, *capture_cpu;
4301 struct snd_pcm_substream *substream;
4302 struct snd_pcm_str *streams = rtd->pcm->streams;
4303 int i;
4304
4305 if (rtd->dai_link->params) {
4306 playback_cpu = cpu_dai->capture_widget;
4307 capture_cpu = cpu_dai->playback_widget;
4308 } else {
4309 playback = cpu_dai->playback_widget;
4310 capture = cpu_dai->capture_widget;
4311 playback_cpu = playback;
4312 capture_cpu = capture;
4313 }
4314
4315 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4316
4317 codec = codec_dai->playback_widget;
4318
4319 if (playback_cpu && codec) {
4320 if (!playback) {
4321 substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
4322 playback = snd_soc_dapm_new_dai(card, substream,
4323 "playback");
4324 if (IS_ERR(playback)) {
4325 dev_err(rtd->dev,
4326 "ASoC: Failed to create DAI %s: %ld\n",
4327 codec_dai->name,
4328 PTR_ERR(playback));
4329 continue;
4330 }
4331
4332 snd_soc_dapm_add_path(&card->dapm, playback_cpu,
4333 playback, NULL, NULL);
4334 }
4335
4336 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4337 cpu_dai->component->name, playback_cpu->name,
4338 codec_dai->component->name, codec->name);
4339
4340 snd_soc_dapm_add_path(&card->dapm, playback, codec,
4341 NULL, NULL);
4342 }
4343 }
4344
4345 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4346
4347 codec = codec_dai->capture_widget;
4348
4349 if (codec && capture_cpu) {
4350 if (!capture) {
4351 substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
4352 capture = snd_soc_dapm_new_dai(card, substream,
4353 "capture");
4354 if (IS_ERR(capture)) {
4355 dev_err(rtd->dev,
4356 "ASoC: Failed to create DAI %s: %ld\n",
4357 codec_dai->name,
4358 PTR_ERR(capture));
4359 continue;
4360 }
4361
4362 snd_soc_dapm_add_path(&card->dapm, capture,
4363 capture_cpu, NULL, NULL);
4364 }
4365
4366 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4367 codec_dai->component->name, codec->name,
4368 cpu_dai->component->name, capture_cpu->name);
4369
4370 snd_soc_dapm_add_path(&card->dapm, codec, capture,
4371 NULL, NULL);
4372 }
4373 }
4374 }
4375
4376 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4377 int event)
4378 {
4379 struct snd_soc_dapm_widget *w;
4380 unsigned int ep;
4381
4382 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
4383 w = dai->playback_widget;
4384 else
4385 w = dai->capture_widget;
4386
4387 if (w) {
4388 dapm_mark_dirty(w, "stream event");
4389
4390 if (w->id == snd_soc_dapm_dai_in) {
4391 ep = SND_SOC_DAPM_EP_SOURCE;
4392 dapm_widget_invalidate_input_paths(w);
4393 } else {
4394 ep = SND_SOC_DAPM_EP_SINK;
4395 dapm_widget_invalidate_output_paths(w);
4396 }
4397
4398 switch (event) {
4399 case SND_SOC_DAPM_STREAM_START:
4400 w->active = 1;
4401 w->is_ep = ep;
4402 break;
4403 case SND_SOC_DAPM_STREAM_STOP:
4404 w->active = 0;
4405 w->is_ep = 0;
4406 break;
4407 case SND_SOC_DAPM_STREAM_SUSPEND:
4408 case SND_SOC_DAPM_STREAM_RESUME:
4409 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
4410 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
4411 break;
4412 }
4413 }
4414 }
4415
4416 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
4417 {
4418 struct snd_soc_pcm_runtime *rtd;
4419
4420
4421 for_each_card_rtds(card, rtd) {
4422
4423
4424
4425
4426 if (rtd->dai_link->dynamic)
4427 continue;
4428
4429 dapm_connect_dai_link_widgets(card, rtd);
4430 }
4431 }
4432
4433 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4434 int event)
4435 {
4436 struct snd_soc_dai *codec_dai;
4437 int i;
4438
4439 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
4440 for_each_rtd_codec_dai(rtd, i, codec_dai)
4441 soc_dapm_dai_stream_event(codec_dai, stream, event);
4442
4443 dapm_power_widgets(rtd->card, event);
4444 }
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4458 int event)
4459 {
4460 struct snd_soc_card *card = rtd->card;
4461
4462 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4463 soc_dapm_stream_event(rtd, stream, event);
4464 mutex_unlock(&card->dapm_mutex);
4465 }
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4481 const char *pin)
4482 {
4483 return snd_soc_dapm_set_pin(dapm, pin, 1);
4484 }
4485 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4499 {
4500 int ret;
4501
4502 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4503
4504 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4505
4506 mutex_unlock(&dapm->card->dapm_mutex);
4507
4508 return ret;
4509 }
4510 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4527 const char *pin)
4528 {
4529 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4530
4531 if (!w) {
4532 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4533 return -EINVAL;
4534 }
4535
4536 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4537 if (!w->connected) {
4538
4539
4540
4541
4542 dapm_widget_invalidate_input_paths(w);
4543 dapm_widget_invalidate_output_paths(w);
4544 w->connected = 1;
4545 }
4546 w->force = 1;
4547 dapm_mark_dirty(w, "force enable");
4548
4549 return 0;
4550 }
4551 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4566 const char *pin)
4567 {
4568 int ret;
4569
4570 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4571
4572 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4573
4574 mutex_unlock(&dapm->card->dapm_mutex);
4575
4576 return ret;
4577 }
4578 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4593 const char *pin)
4594 {
4595 return snd_soc_dapm_set_pin(dapm, pin, 0);
4596 }
4597 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4610 const char *pin)
4611 {
4612 int ret;
4613
4614 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4615
4616 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4617
4618 mutex_unlock(&dapm->card->dapm_mutex);
4619
4620 return ret;
4621 }
4622 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4641 const char *pin)
4642 {
4643 return snd_soc_dapm_set_pin(dapm, pin, 0);
4644 }
4645 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4662 {
4663 int ret;
4664
4665 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4666
4667 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4668
4669 mutex_unlock(&dapm->card->dapm_mutex);
4670
4671 return ret;
4672 }
4673 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4685 const char *pin)
4686 {
4687 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4688
4689 if (w)
4690 return w->connected;
4691
4692 return 0;
4693 }
4694 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4708 const char *pin)
4709 {
4710 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4711
4712 if (!w) {
4713 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4714 return -EINVAL;
4715 }
4716
4717 w->ignore_suspend = 1;
4718
4719 return 0;
4720 }
4721 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4722
4723
4724
4725
4726
4727
4728
4729 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4730 {
4731 dapm_debugfs_cleanup(dapm);
4732 dapm_free_widgets(dapm);
4733 list_del(&dapm->list);
4734 }
4735 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4736
4737 void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
4738 struct snd_soc_card *card,
4739 struct snd_soc_component *component)
4740 {
4741 dapm->card = card;
4742 dapm->component = component;
4743 dapm->bias_level = SND_SOC_BIAS_OFF;
4744
4745 if (component) {
4746 dapm->dev = component->dev;
4747 dapm->idle_bias_off = !component->driver->idle_bias_on,
4748 dapm->suspend_bias_off = component->driver->suspend_bias_off;
4749 } else {
4750 dapm->dev = card->dev;
4751 }
4752
4753 INIT_LIST_HEAD(&dapm->list);
4754 list_add(&dapm->list, &card->dapm_list);
4755 }
4756 EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
4757
4758 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4759 {
4760 struct snd_soc_card *card = dapm->card;
4761 struct snd_soc_dapm_widget *w;
4762 LIST_HEAD(down_list);
4763 int powerdown = 0;
4764
4765 mutex_lock(&card->dapm_mutex);
4766
4767 list_for_each_entry(w, &dapm->card->widgets, list) {
4768 if (w->dapm != dapm)
4769 continue;
4770 if (w->power) {
4771 dapm_seq_insert(w, &down_list, false);
4772 w->new_power = 0;
4773 powerdown = 1;
4774 }
4775 }
4776
4777
4778
4779
4780 if (powerdown) {
4781 if (dapm->bias_level == SND_SOC_BIAS_ON)
4782 snd_soc_dapm_set_bias_level(dapm,
4783 SND_SOC_BIAS_PREPARE);
4784 dapm_seq_run(card, &down_list, 0, false);
4785 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4786 snd_soc_dapm_set_bias_level(dapm,
4787 SND_SOC_BIAS_STANDBY);
4788 }
4789
4790 mutex_unlock(&card->dapm_mutex);
4791 }
4792
4793
4794
4795
4796 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4797 {
4798 struct snd_soc_dapm_context *dapm;
4799
4800 list_for_each_entry(dapm, &card->dapm_list, list) {
4801 if (dapm != &card->dapm) {
4802 soc_dapm_shutdown_dapm(dapm);
4803 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4804 snd_soc_dapm_set_bias_level(dapm,
4805 SND_SOC_BIAS_OFF);
4806 }
4807 }
4808
4809 soc_dapm_shutdown_dapm(&card->dapm);
4810 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4811 snd_soc_dapm_set_bias_level(&card->dapm,
4812 SND_SOC_BIAS_OFF);
4813 }
4814
4815
4816 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4817 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4818 MODULE_LICENSE("GPL");