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1 | /* | |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * Features: | |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
15 | * DACs/ADCs. | |
16 | * o Platform power domain - can support external components i.e. amps and | |
17 | * mic/headphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
21 | * o Delayed power down of audio subsystem to reduce pops between a quick | |
22 | * device reopen. | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/async.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/pm.h> | |
32 | #include <linux/bitops.h> | |
33 | #include <linux/platform_device.h> | |
34 | #include <linux/jiffies.h> | |
35 | #include <linux/debugfs.h> | |
36 | #include <linux/pm_runtime.h> | |
37 | #include <linux/regulator/consumer.h> | |
38 | #include <linux/clk.h> | |
39 | #include <linux/slab.h> | |
40 | #include <sound/core.h> | |
41 | #include <sound/pcm.h> | |
42 | #include <sound/pcm_params.h> | |
43 | #include <sound/soc.h> | |
44 | #include <sound/initval.h> | |
45 | ||
46 | #include <trace/events/asoc.h> | |
47 | ||
48 | #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++; | |
49 | ||
50 | #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \ | |
51 | SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN) | |
52 | ||
53 | #define snd_soc_dapm_for_each_direction(dir) \ | |
54 | for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \ | |
55 | (dir)++) | |
56 | ||
57 | static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, | |
58 | struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink, | |
59 | const char *control, | |
60 | int (*connected)(struct snd_soc_dapm_widget *source, | |
61 | struct snd_soc_dapm_widget *sink)); | |
62 | ||
63 | struct snd_soc_dapm_widget * | |
64 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, | |
65 | const struct snd_soc_dapm_widget *widget); | |
66 | ||
67 | struct snd_soc_dapm_widget * | |
68 | snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, | |
69 | const struct snd_soc_dapm_widget *widget); | |
70 | ||
71 | /* dapm power sequences - make this per codec in the future */ | |
72 | static int dapm_up_seq[] = { | |
73 | [snd_soc_dapm_pre] = 0, | |
74 | [snd_soc_dapm_regulator_supply] = 1, | |
75 | [snd_soc_dapm_clock_supply] = 1, | |
76 | [snd_soc_dapm_supply] = 2, | |
77 | [snd_soc_dapm_micbias] = 3, | |
78 | [snd_soc_dapm_dai_link] = 2, | |
79 | [snd_soc_dapm_dai_in] = 4, | |
80 | [snd_soc_dapm_dai_out] = 4, | |
81 | [snd_soc_dapm_aif_in] = 4, | |
82 | [snd_soc_dapm_aif_out] = 4, | |
83 | [snd_soc_dapm_mic] = 5, | |
84 | [snd_soc_dapm_mux] = 6, | |
85 | [snd_soc_dapm_demux] = 6, | |
86 | [snd_soc_dapm_dac] = 7, | |
87 | [snd_soc_dapm_switch] = 8, | |
88 | [snd_soc_dapm_mixer] = 8, | |
89 | [snd_soc_dapm_mixer_named_ctl] = 8, | |
90 | [snd_soc_dapm_pga] = 9, | |
91 | [snd_soc_dapm_adc] = 10, | |
92 | [snd_soc_dapm_out_drv] = 11, | |
93 | [snd_soc_dapm_hp] = 11, | |
94 | [snd_soc_dapm_spk] = 11, | |
95 | [snd_soc_dapm_line] = 11, | |
96 | [snd_soc_dapm_kcontrol] = 12, | |
97 | [snd_soc_dapm_post] = 13, | |
98 | }; | |
99 | ||
100 | static int dapm_down_seq[] = { | |
101 | [snd_soc_dapm_pre] = 0, | |
102 | [snd_soc_dapm_kcontrol] = 1, | |
103 | [snd_soc_dapm_adc] = 2, | |
104 | [snd_soc_dapm_hp] = 3, | |
105 | [snd_soc_dapm_spk] = 3, | |
106 | [snd_soc_dapm_line] = 3, | |
107 | [snd_soc_dapm_out_drv] = 3, | |
108 | [snd_soc_dapm_pga] = 4, | |
109 | [snd_soc_dapm_switch] = 5, | |
110 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
111 | [snd_soc_dapm_mixer] = 5, | |
112 | [snd_soc_dapm_dac] = 6, | |
113 | [snd_soc_dapm_mic] = 7, | |
114 | [snd_soc_dapm_micbias] = 8, | |
115 | [snd_soc_dapm_mux] = 9, | |
116 | [snd_soc_dapm_demux] = 9, | |
117 | [snd_soc_dapm_aif_in] = 10, | |
118 | [snd_soc_dapm_aif_out] = 10, | |
119 | [snd_soc_dapm_dai_in] = 10, | |
120 | [snd_soc_dapm_dai_out] = 10, | |
121 | [snd_soc_dapm_dai_link] = 11, | |
122 | [snd_soc_dapm_supply] = 12, | |
123 | [snd_soc_dapm_clock_supply] = 13, | |
124 | [snd_soc_dapm_regulator_supply] = 13, | |
125 | [snd_soc_dapm_post] = 14, | |
126 | }; | |
127 | ||
128 | static void dapm_assert_locked(struct snd_soc_dapm_context *dapm) | |
129 | { | |
130 | if (dapm->card && dapm->card->instantiated) | |
131 | lockdep_assert_held(&dapm->card->dapm_mutex); | |
132 | } | |
133 | ||
134 | static void pop_wait(u32 pop_time) | |
135 | { | |
136 | if (pop_time) | |
137 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
138 | } | |
139 | ||
140 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) | |
141 | { | |
142 | va_list args; | |
143 | char *buf; | |
144 | ||
145 | if (!pop_time) | |
146 | return; | |
147 | ||
148 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
149 | if (buf == NULL) | |
150 | return; | |
151 | ||
152 | va_start(args, fmt); | |
153 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
154 | dev_info(dev, "%s", buf); | |
155 | va_end(args); | |
156 | ||
157 | kfree(buf); | |
158 | } | |
159 | ||
160 | static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w) | |
161 | { | |
162 | return !list_empty(&w->dirty); | |
163 | } | |
164 | ||
165 | static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason) | |
166 | { | |
167 | dapm_assert_locked(w->dapm); | |
168 | ||
169 | if (!dapm_dirty_widget(w)) { | |
170 | dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n", | |
171 | w->name, reason); | |
172 | list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty); | |
173 | } | |
174 | } | |
175 | ||
176 | /* | |
177 | * Common implementation for dapm_widget_invalidate_input_paths() and | |
178 | * dapm_widget_invalidate_output_paths(). The function is inlined since the | |
179 | * combined size of the two specialized functions is only marginally larger then | |
180 | * the size of the generic function and at the same time the fast path of the | |
181 | * specialized functions is significantly smaller than the generic function. | |
182 | */ | |
183 | static __always_inline void dapm_widget_invalidate_paths( | |
184 | struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir) | |
185 | { | |
186 | enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir); | |
187 | struct snd_soc_dapm_widget *node; | |
188 | struct snd_soc_dapm_path *p; | |
189 | LIST_HEAD(list); | |
190 | ||
191 | dapm_assert_locked(w->dapm); | |
192 | ||
193 | if (w->endpoints[dir] == -1) | |
194 | return; | |
195 | ||
196 | list_add_tail(&w->work_list, &list); | |
197 | w->endpoints[dir] = -1; | |
198 | ||
199 | list_for_each_entry(w, &list, work_list) { | |
200 | snd_soc_dapm_widget_for_each_path(w, dir, p) { | |
201 | if (p->is_supply || p->weak || !p->connect) | |
202 | continue; | |
203 | node = p->node[rdir]; | |
204 | if (node->endpoints[dir] != -1) { | |
205 | node->endpoints[dir] = -1; | |
206 | list_add_tail(&node->work_list, &list); | |
207 | } | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | /* | |
213 | * dapm_widget_invalidate_input_paths() - Invalidate the cached number of | |
214 | * input paths | |
215 | * @w: The widget for which to invalidate the cached number of input paths | |
216 | * | |
217 | * Resets the cached number of inputs for the specified widget and all widgets | |
218 | * that can be reached via outcoming paths from the widget. | |
219 | * | |
220 | * This function must be called if the number of output paths for a widget might | |
221 | * have changed. E.g. if the source state of a widget changes or a path is added | |
222 | * or activated with the widget as the sink. | |
223 | */ | |
224 | static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w) | |
225 | { | |
226 | dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN); | |
227 | } | |
228 | ||
229 | /* | |
230 | * dapm_widget_invalidate_output_paths() - Invalidate the cached number of | |
231 | * output paths | |
232 | * @w: The widget for which to invalidate the cached number of output paths | |
233 | * | |
234 | * Resets the cached number of outputs for the specified widget and all widgets | |
235 | * that can be reached via incoming paths from the widget. | |
236 | * | |
237 | * This function must be called if the number of output paths for a widget might | |
238 | * have changed. E.g. if the sink state of a widget changes or a path is added | |
239 | * or activated with the widget as the source. | |
240 | */ | |
241 | static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w) | |
242 | { | |
243 | dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT); | |
244 | } | |
245 | ||
246 | /* | |
247 | * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs | |
248 | * for the widgets connected to a path | |
249 | * @p: The path to invalidate | |
250 | * | |
251 | * Resets the cached number of inputs for the sink of the path and the cached | |
252 | * number of outputs for the source of the path. | |
253 | * | |
254 | * This function must be called when a path is added, removed or the connected | |
255 | * state changes. | |
256 | */ | |
257 | static void dapm_path_invalidate(struct snd_soc_dapm_path *p) | |
258 | { | |
259 | /* | |
260 | * Weak paths or supply paths do not influence the number of input or | |
261 | * output paths of their neighbors. | |
262 | */ | |
263 | if (p->weak || p->is_supply) | |
264 | return; | |
265 | ||
266 | /* | |
267 | * The number of connected endpoints is the sum of the number of | |
268 | * connected endpoints of all neighbors. If a node with 0 connected | |
269 | * endpoints is either connected or disconnected that sum won't change, | |
270 | * so there is no need to re-check the path. | |
271 | */ | |
272 | if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0) | |
273 | dapm_widget_invalidate_input_paths(p->sink); | |
274 | if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0) | |
275 | dapm_widget_invalidate_output_paths(p->source); | |
276 | } | |
277 | ||
278 | void dapm_mark_endpoints_dirty(struct snd_soc_card *card) | |
279 | { | |
280 | struct snd_soc_dapm_widget *w; | |
281 | ||
282 | mutex_lock(&card->dapm_mutex); | |
283 | ||
284 | list_for_each_entry(w, &card->widgets, list) { | |
285 | if (w->is_ep) { | |
286 | dapm_mark_dirty(w, "Rechecking endpoints"); | |
287 | if (w->is_ep & SND_SOC_DAPM_EP_SINK) | |
288 | dapm_widget_invalidate_output_paths(w); | |
289 | if (w->is_ep & SND_SOC_DAPM_EP_SOURCE) | |
290 | dapm_widget_invalidate_input_paths(w); | |
291 | } | |
292 | } | |
293 | ||
294 | mutex_unlock(&card->dapm_mutex); | |
295 | } | |
296 | EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty); | |
297 | ||
298 | /* create a new dapm widget */ | |
299 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( | |
300 | const struct snd_soc_dapm_widget *_widget) | |
301 | { | |
302 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); | |
303 | } | |
304 | ||
305 | struct dapm_kcontrol_data { | |
306 | unsigned int value; | |
307 | struct snd_soc_dapm_widget *widget; | |
308 | struct list_head paths; | |
309 | struct snd_soc_dapm_widget_list *wlist; | |
310 | }; | |
311 | ||
312 | static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, | |
313 | struct snd_kcontrol *kcontrol, const char *ctrl_name) | |
314 | { | |
315 | struct dapm_kcontrol_data *data; | |
316 | struct soc_mixer_control *mc; | |
317 | struct soc_enum *e; | |
318 | const char *name; | |
319 | int ret; | |
320 | ||
321 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
322 | if (!data) | |
323 | return -ENOMEM; | |
324 | ||
325 | INIT_LIST_HEAD(&data->paths); | |
326 | ||
327 | switch (widget->id) { | |
328 | case snd_soc_dapm_switch: | |
329 | case snd_soc_dapm_mixer: | |
330 | case snd_soc_dapm_mixer_named_ctl: | |
331 | mc = (struct soc_mixer_control *)kcontrol->private_value; | |
332 | ||
333 | if (mc->autodisable) { | |
334 | struct snd_soc_dapm_widget template; | |
335 | ||
336 | name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name, | |
337 | "Autodisable"); | |
338 | if (!name) { | |
339 | ret = -ENOMEM; | |
340 | goto err_data; | |
341 | } | |
342 | ||
343 | memset(&template, 0, sizeof(template)); | |
344 | template.reg = mc->reg; | |
345 | template.mask = (1 << fls(mc->max)) - 1; | |
346 | template.shift = mc->shift; | |
347 | if (mc->invert) | |
348 | template.off_val = mc->max; | |
349 | else | |
350 | template.off_val = 0; | |
351 | template.on_val = template.off_val; | |
352 | template.id = snd_soc_dapm_kcontrol; | |
353 | template.name = name; | |
354 | ||
355 | data->value = template.on_val; | |
356 | ||
357 | data->widget = | |
358 | snd_soc_dapm_new_control_unlocked(widget->dapm, | |
359 | &template); | |
360 | kfree(name); | |
361 | if (!data->widget) { | |
362 | ret = -ENOMEM; | |
363 | goto err_data; | |
364 | } | |
365 | } | |
366 | break; | |
367 | case snd_soc_dapm_demux: | |
368 | case snd_soc_dapm_mux: | |
369 | e = (struct soc_enum *)kcontrol->private_value; | |
370 | ||
371 | if (e->autodisable) { | |
372 | struct snd_soc_dapm_widget template; | |
373 | ||
374 | name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name, | |
375 | "Autodisable"); | |
376 | if (!name) { | |
377 | ret = -ENOMEM; | |
378 | goto err_data; | |
379 | } | |
380 | ||
381 | memset(&template, 0, sizeof(template)); | |
382 | template.reg = e->reg; | |
383 | template.mask = e->mask << e->shift_l; | |
384 | template.shift = e->shift_l; | |
385 | template.off_val = snd_soc_enum_item_to_val(e, 0); | |
386 | template.on_val = template.off_val; | |
387 | template.id = snd_soc_dapm_kcontrol; | |
388 | template.name = name; | |
389 | ||
390 | data->value = template.on_val; | |
391 | ||
392 | data->widget = snd_soc_dapm_new_control_unlocked( | |
393 | widget->dapm, &template); | |
394 | kfree(name); | |
395 | if (!data->widget) { | |
396 | ret = -ENOMEM; | |
397 | goto err_data; | |
398 | } | |
399 | ||
400 | snd_soc_dapm_add_path(widget->dapm, data->widget, | |
401 | widget, NULL, NULL); | |
402 | } | |
403 | break; | |
404 | default: | |
405 | break; | |
406 | } | |
407 | ||
408 | kcontrol->private_data = data; | |
409 | ||
410 | return 0; | |
411 | ||
412 | err_data: | |
413 | kfree(data); | |
414 | return ret; | |
415 | } | |
416 | ||
417 | static void dapm_kcontrol_free(struct snd_kcontrol *kctl) | |
418 | { | |
419 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl); | |
420 | kfree(data->wlist); | |
421 | kfree(data); | |
422 | } | |
423 | ||
424 | static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist( | |
425 | const struct snd_kcontrol *kcontrol) | |
426 | { | |
427 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
428 | ||
429 | return data->wlist; | |
430 | } | |
431 | ||
432 | static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol, | |
433 | struct snd_soc_dapm_widget *widget) | |
434 | { | |
435 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
436 | struct snd_soc_dapm_widget_list *new_wlist; | |
437 | unsigned int n; | |
438 | ||
439 | if (data->wlist) | |
440 | n = data->wlist->num_widgets + 1; | |
441 | else | |
442 | n = 1; | |
443 | ||
444 | new_wlist = krealloc(data->wlist, | |
445 | sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL); | |
446 | if (!new_wlist) | |
447 | return -ENOMEM; | |
448 | ||
449 | new_wlist->widgets[n - 1] = widget; | |
450 | new_wlist->num_widgets = n; | |
451 | ||
452 | data->wlist = new_wlist; | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol, | |
458 | struct snd_soc_dapm_path *path) | |
459 | { | |
460 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
461 | ||
462 | list_add_tail(&path->list_kcontrol, &data->paths); | |
463 | } | |
464 | ||
465 | static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol) | |
466 | { | |
467 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
468 | ||
469 | if (!data->widget) | |
470 | return true; | |
471 | ||
472 | return data->widget->power; | |
473 | } | |
474 | ||
475 | static struct list_head *dapm_kcontrol_get_path_list( | |
476 | const struct snd_kcontrol *kcontrol) | |
477 | { | |
478 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
479 | ||
480 | return &data->paths; | |
481 | } | |
482 | ||
483 | #define dapm_kcontrol_for_each_path(path, kcontrol) \ | |
484 | list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \ | |
485 | list_kcontrol) | |
486 | ||
487 | unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol) | |
488 | { | |
489 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
490 | ||
491 | return data->value; | |
492 | } | |
493 | EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value); | |
494 | ||
495 | static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol, | |
496 | unsigned int value) | |
497 | { | |
498 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); | |
499 | ||
500 | if (data->value == value) | |
501 | return false; | |
502 | ||
503 | if (data->widget) | |
504 | data->widget->on_val = value; | |
505 | ||
506 | data->value = value; | |
507 | ||
508 | return true; | |
509 | } | |
510 | ||
511 | /** | |
512 | * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a | |
513 | * kcontrol | |
514 | * @kcontrol: The kcontrol | |
515 | */ | |
516 | struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget( | |
517 | struct snd_kcontrol *kcontrol) | |
518 | { | |
519 | return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]; | |
520 | } | |
521 | EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget); | |
522 | ||
523 | /** | |
524 | * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a | |
525 | * kcontrol | |
526 | * @kcontrol: The kcontrol | |
527 | * | |
528 | * Note: This function must only be used on kcontrols that are known to have | |
529 | * been registered for a CODEC. Otherwise the behaviour is undefined. | |
530 | */ | |
531 | struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm( | |
532 | struct snd_kcontrol *kcontrol) | |
533 | { | |
534 | return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm; | |
535 | } | |
536 | EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm); | |
537 | ||
538 | static void dapm_reset(struct snd_soc_card *card) | |
539 | { | |
540 | struct snd_soc_dapm_widget *w; | |
541 | ||
542 | lockdep_assert_held(&card->dapm_mutex); | |
543 | ||
544 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); | |
545 | ||
546 | list_for_each_entry(w, &card->widgets, list) { | |
547 | w->new_power = w->power; | |
548 | w->power_checked = false; | |
549 | } | |
550 | } | |
551 | ||
552 | static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm) | |
553 | { | |
554 | if (!dapm->component) | |
555 | return NULL; | |
556 | return dapm->component->name_prefix; | |
557 | } | |
558 | ||
559 | static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg, | |
560 | unsigned int *value) | |
561 | { | |
562 | if (!dapm->component) | |
563 | return -EIO; | |
564 | return snd_soc_component_read(dapm->component, reg, value); | |
565 | } | |
566 | ||
567 | static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm, | |
568 | int reg, unsigned int mask, unsigned int value) | |
569 | { | |
570 | if (!dapm->component) | |
571 | return -EIO; | |
572 | return snd_soc_component_update_bits(dapm->component, reg, | |
573 | mask, value); | |
574 | } | |
575 | ||
576 | static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm, | |
577 | int reg, unsigned int mask, unsigned int value) | |
578 | { | |
579 | if (!dapm->component) | |
580 | return -EIO; | |
581 | return snd_soc_component_test_bits(dapm->component, reg, mask, value); | |
582 | } | |
583 | ||
584 | static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm) | |
585 | { | |
586 | if (dapm->component) | |
587 | snd_soc_component_async_complete(dapm->component); | |
588 | } | |
589 | ||
590 | static struct snd_soc_dapm_widget * | |
591 | dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name) | |
592 | { | |
593 | struct snd_soc_dapm_widget *w = wcache->widget; | |
594 | struct list_head *wlist; | |
595 | const int depth = 2; | |
596 | int i = 0; | |
597 | ||
598 | if (w) { | |
599 | wlist = &w->dapm->card->widgets; | |
600 | ||
601 | list_for_each_entry_from(w, wlist, list) { | |
602 | if (!strcmp(name, w->name)) | |
603 | return w; | |
604 | ||
605 | if (++i == depth) | |
606 | break; | |
607 | } | |
608 | } | |
609 | ||
610 | return NULL; | |
611 | } | |
612 | ||
613 | static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache, | |
614 | struct snd_soc_dapm_widget *w) | |
615 | { | |
616 | wcache->widget = w; | |
617 | } | |
618 | ||
619 | /** | |
620 | * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level | |
621 | * @dapm: The DAPM context for which to set the level | |
622 | * @level: The level to set | |
623 | * | |
624 | * Forces the DAPM bias level to a specific state. It will call the bias level | |
625 | * callback of DAPM context with the specified level. This will even happen if | |
626 | * the context is already at the same level. Furthermore it will not go through | |
627 | * the normal bias level sequencing, meaning any intermediate states between the | |
628 | * current and the target state will not be entered. | |
629 | * | |
630 | * Note that the change in bias level is only temporary and the next time | |
631 | * snd_soc_dapm_sync() is called the state will be set to the level as | |
632 | * determined by the DAPM core. The function is mainly intended to be used to | |
633 | * used during probe or resume from suspend to power up the device so | |
634 | * initialization can be done, before the DAPM core takes over. | |
635 | */ | |
636 | int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm, | |
637 | enum snd_soc_bias_level level) | |
638 | { | |
639 | int ret = 0; | |
640 | ||
641 | if (dapm->set_bias_level) | |
642 | ret = dapm->set_bias_level(dapm, level); | |
643 | ||
644 | if (ret == 0) | |
645 | dapm->bias_level = level; | |
646 | ||
647 | return ret; | |
648 | } | |
649 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level); | |
650 | ||
651 | /** | |
652 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
653 | * @dapm: DAPM context | |
654 | * @level: level to configure | |
655 | * | |
656 | * Configure the bias (power) levels for the SoC audio device. | |
657 | * | |
658 | * Returns 0 for success else error. | |
659 | */ | |
660 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, | |
661 | enum snd_soc_bias_level level) | |
662 | { | |
663 | struct snd_soc_card *card = dapm->card; | |
664 | int ret = 0; | |
665 | ||
666 | trace_snd_soc_bias_level_start(card, level); | |
667 | ||
668 | if (card && card->set_bias_level) | |
669 | ret = card->set_bias_level(card, dapm, level); | |
670 | if (ret != 0) | |
671 | goto out; | |
672 | ||
673 | if (!card || dapm != &card->dapm) | |
674 | ret = snd_soc_dapm_force_bias_level(dapm, level); | |
675 | ||
676 | if (ret != 0) | |
677 | goto out; | |
678 | ||
679 | if (card && card->set_bias_level_post) | |
680 | ret = card->set_bias_level_post(card, dapm, level); | |
681 | out: | |
682 | trace_snd_soc_bias_level_done(card, level); | |
683 | ||
684 | return ret; | |
685 | } | |
686 | ||
687 | /* connect mux widget to its interconnecting audio paths */ | |
688 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, | |
689 | struct snd_soc_dapm_path *path, const char *control_name, | |
690 | struct snd_soc_dapm_widget *w) | |
691 | { | |
692 | const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0]; | |
693 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
694 | unsigned int val, item; | |
695 | int i; | |
696 | ||
697 | if (e->reg != SND_SOC_NOPM) { | |
698 | soc_dapm_read(dapm, e->reg, &val); | |
699 | val = (val >> e->shift_l) & e->mask; | |
700 | item = snd_soc_enum_val_to_item(e, val); | |
701 | } else { | |
702 | /* since a virtual mux has no backing registers to | |
703 | * decide which path to connect, it will try to match | |
704 | * with the first enumeration. This is to ensure | |
705 | * that the default mux choice (the first) will be | |
706 | * correctly powered up during initialization. | |
707 | */ | |
708 | item = 0; | |
709 | } | |
710 | ||
711 | for (i = 0; i < e->items; i++) { | |
712 | if (!(strcmp(control_name, e->texts[i]))) { | |
713 | path->name = e->texts[i]; | |
714 | if (i == item) | |
715 | path->connect = 1; | |
716 | else | |
717 | path->connect = 0; | |
718 | return 0; | |
719 | } | |
720 | } | |
721 | ||
722 | return -ENODEV; | |
723 | } | |
724 | ||
725 | /* set up initial codec paths */ | |
726 | static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i) | |
727 | { | |
728 | struct soc_mixer_control *mc = (struct soc_mixer_control *) | |
729 | p->sink->kcontrol_news[i].private_value; | |
730 | unsigned int reg = mc->reg; | |
731 | unsigned int shift = mc->shift; | |
732 | unsigned int max = mc->max; | |
733 | unsigned int mask = (1 << fls(max)) - 1; | |
734 | unsigned int invert = mc->invert; | |
735 | unsigned int val; | |
736 | ||
737 | if (reg != SND_SOC_NOPM) { | |
738 | soc_dapm_read(p->sink->dapm, reg, &val); | |
739 | val = (val >> shift) & mask; | |
740 | if (invert) | |
741 | val = max - val; | |
742 | p->connect = !!val; | |
743 | } else { | |
744 | p->connect = 0; | |
745 | } | |
746 | } | |
747 | ||
748 | /* connect mixer widget to its interconnecting audio paths */ | |
749 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, | |
750 | struct snd_soc_dapm_path *path, const char *control_name) | |
751 | { | |
752 | int i; | |
753 | ||
754 | /* search for mixer kcontrol */ | |
755 | for (i = 0; i < path->sink->num_kcontrols; i++) { | |
756 | if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) { | |
757 | path->name = path->sink->kcontrol_news[i].name; | |
758 | dapm_set_mixer_path_status(path, i); | |
759 | return 0; | |
760 | } | |
761 | } | |
762 | return -ENODEV; | |
763 | } | |
764 | ||
765 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, | |
766 | struct snd_soc_dapm_widget *kcontrolw, | |
767 | const struct snd_kcontrol_new *kcontrol_new, | |
768 | struct snd_kcontrol **kcontrol) | |
769 | { | |
770 | struct snd_soc_dapm_widget *w; | |
771 | int i; | |
772 | ||
773 | *kcontrol = NULL; | |
774 | ||
775 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
776 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) | |
777 | continue; | |
778 | for (i = 0; i < w->num_kcontrols; i++) { | |
779 | if (&w->kcontrol_news[i] == kcontrol_new) { | |
780 | if (w->kcontrols) | |
781 | *kcontrol = w->kcontrols[i]; | |
782 | return 1; | |
783 | } | |
784 | } | |
785 | } | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
790 | /* | |
791 | * Determine if a kcontrol is shared. If it is, look it up. If it isn't, | |
792 | * create it. Either way, add the widget into the control's widget list | |
793 | */ | |
794 | static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w, | |
795 | int kci) | |
796 | { | |
797 | struct snd_soc_dapm_context *dapm = w->dapm; | |
798 | struct snd_card *card = dapm->card->snd_card; | |
799 | const char *prefix; | |
800 | size_t prefix_len; | |
801 | int shared; | |
802 | struct snd_kcontrol *kcontrol; | |
803 | bool wname_in_long_name, kcname_in_long_name; | |
804 | char *long_name = NULL; | |
805 | const char *name; | |
806 | int ret = 0; | |
807 | ||
808 | prefix = soc_dapm_prefix(dapm); | |
809 | if (prefix) | |
810 | prefix_len = strlen(prefix) + 1; | |
811 | else | |
812 | prefix_len = 0; | |
813 | ||
814 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci], | |
815 | &kcontrol); | |
816 | ||
817 | if (!kcontrol) { | |
818 | if (shared) { | |
819 | wname_in_long_name = false; | |
820 | kcname_in_long_name = true; | |
821 | } else { | |
822 | switch (w->id) { | |
823 | case snd_soc_dapm_switch: | |
824 | case snd_soc_dapm_mixer: | |
825 | case snd_soc_dapm_pga: | |
826 | wname_in_long_name = true; | |
827 | kcname_in_long_name = true; | |
828 | break; | |
829 | case snd_soc_dapm_mixer_named_ctl: | |
830 | wname_in_long_name = false; | |
831 | kcname_in_long_name = true; | |
832 | break; | |
833 | case snd_soc_dapm_demux: | |
834 | case snd_soc_dapm_mux: | |
835 | wname_in_long_name = true; | |
836 | kcname_in_long_name = false; | |
837 | break; | |
838 | default: | |
839 | return -EINVAL; | |
840 | } | |
841 | } | |
842 | ||
843 | if (wname_in_long_name && kcname_in_long_name) { | |
844 | /* | |
845 | * The control will get a prefix from the control | |
846 | * creation process but we're also using the same | |
847 | * prefix for widgets so cut the prefix off the | |
848 | * front of the widget name. | |
849 | */ | |
850 | long_name = kasprintf(GFP_KERNEL, "%s %s", | |
851 | w->name + prefix_len, | |
852 | w->kcontrol_news[kci].name); | |
853 | if (long_name == NULL) | |
854 | return -ENOMEM; | |
855 | ||
856 | name = long_name; | |
857 | } else if (wname_in_long_name) { | |
858 | long_name = NULL; | |
859 | name = w->name + prefix_len; | |
860 | } else { | |
861 | long_name = NULL; | |
862 | name = w->kcontrol_news[kci].name; | |
863 | } | |
864 | ||
865 | kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name, | |
866 | prefix); | |
867 | if (!kcontrol) { | |
868 | ret = -ENOMEM; | |
869 | goto exit_free; | |
870 | } | |
871 | ||
872 | kcontrol->private_free = dapm_kcontrol_free; | |
873 | ||
874 | ret = dapm_kcontrol_data_alloc(w, kcontrol, name); | |
875 | if (ret) { | |
876 | snd_ctl_free_one(kcontrol); | |
877 | goto exit_free; | |
878 | } | |
879 | ||
880 | ret = snd_ctl_add(card, kcontrol); | |
881 | if (ret < 0) { | |
882 | dev_err(dapm->dev, | |
883 | "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", | |
884 | w->name, name, ret); | |
885 | goto exit_free; | |
886 | } | |
887 | } | |
888 | ||
889 | ret = dapm_kcontrol_add_widget(kcontrol, w); | |
890 | if (ret == 0) | |
891 | w->kcontrols[kci] = kcontrol; | |
892 | ||
893 | exit_free: | |
894 | kfree(long_name); | |
895 | ||
896 | return ret; | |
897 | } | |
898 | ||
899 | /* create new dapm mixer control */ | |
900 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) | |
901 | { | |
902 | int i, ret; | |
903 | struct snd_soc_dapm_path *path; | |
904 | struct dapm_kcontrol_data *data; | |
905 | ||
906 | /* add kcontrol */ | |
907 | for (i = 0; i < w->num_kcontrols; i++) { | |
908 | /* match name */ | |
909 | snd_soc_dapm_widget_for_each_source_path(w, path) { | |
910 | /* mixer/mux paths name must match control name */ | |
911 | if (path->name != (char *)w->kcontrol_news[i].name) | |
912 | continue; | |
913 | ||
914 | if (!w->kcontrols[i]) { | |
915 | ret = dapm_create_or_share_kcontrol(w, i); | |
916 | if (ret < 0) | |
917 | return ret; | |
918 | } | |
919 | ||
920 | dapm_kcontrol_add_path(w->kcontrols[i], path); | |
921 | ||
922 | data = snd_kcontrol_chip(w->kcontrols[i]); | |
923 | if (data->widget) | |
924 | snd_soc_dapm_add_path(data->widget->dapm, | |
925 | data->widget, | |
926 | path->source, | |
927 | NULL, NULL); | |
928 | } | |
929 | } | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
934 | /* create new dapm mux control */ | |
935 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) | |
936 | { | |
937 | struct snd_soc_dapm_context *dapm = w->dapm; | |
938 | enum snd_soc_dapm_direction dir; | |
939 | struct snd_soc_dapm_path *path; | |
940 | const char *type; | |
941 | int ret; | |
942 | ||
943 | switch (w->id) { | |
944 | case snd_soc_dapm_mux: | |
945 | dir = SND_SOC_DAPM_DIR_OUT; | |
946 | type = "mux"; | |
947 | break; | |
948 | case snd_soc_dapm_demux: | |
949 | dir = SND_SOC_DAPM_DIR_IN; | |
950 | type = "demux"; | |
951 | break; | |
952 | default: | |
953 | return -EINVAL; | |
954 | } | |
955 | ||
956 | if (w->num_kcontrols != 1) { | |
957 | dev_err(dapm->dev, | |
958 | "ASoC: %s %s has incorrect number of controls\n", type, | |
959 | w->name); | |
960 | return -EINVAL; | |
961 | } | |
962 | ||
963 | if (list_empty(&w->edges[dir])) { | |
964 | dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name); | |
965 | return -EINVAL; | |
966 | } | |
967 | ||
968 | ret = dapm_create_or_share_kcontrol(w, 0); | |
969 | if (ret < 0) | |
970 | return ret; | |
971 | ||
972 | snd_soc_dapm_widget_for_each_path(w, dir, path) { | |
973 | if (path->name) | |
974 | dapm_kcontrol_add_path(w->kcontrols[0], path); | |
975 | } | |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
980 | /* create new dapm volume control */ | |
981 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) | |
982 | { | |
983 | int i, ret; | |
984 | ||
985 | for (i = 0; i < w->num_kcontrols; i++) { | |
986 | ret = dapm_create_or_share_kcontrol(w, i); | |
987 | if (ret < 0) | |
988 | return ret; | |
989 | } | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | /* create new dapm dai link control */ | |
995 | static int dapm_new_dai_link(struct snd_soc_dapm_widget *w) | |
996 | { | |
997 | int i, ret; | |
998 | struct snd_kcontrol *kcontrol; | |
999 | struct snd_soc_dapm_context *dapm = w->dapm; | |
1000 | struct snd_card *card = dapm->card->snd_card; | |
1001 | ||
1002 | /* create control for links with > 1 config */ | |
1003 | if (w->num_params <= 1) | |
1004 | return 0; | |
1005 | ||
1006 | /* add kcontrol */ | |
1007 | for (i = 0; i < w->num_kcontrols; i++) { | |
1008 | kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w, | |
1009 | w->name, NULL); | |
1010 | ret = snd_ctl_add(card, kcontrol); | |
1011 | if (ret < 0) { | |
1012 | dev_err(dapm->dev, | |
1013 | "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", | |
1014 | w->name, w->kcontrol_news[i].name, ret); | |
1015 | return ret; | |
1016 | } | |
1017 | kcontrol->private_data = w; | |
1018 | w->kcontrols[i] = kcontrol; | |
1019 | } | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | /* We implement power down on suspend by checking the power state of | |
1025 | * the ALSA card - when we are suspending the ALSA state for the card | |
1026 | * is set to D3. | |
1027 | */ | |
1028 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
1029 | { | |
1030 | int level = snd_power_get_state(widget->dapm->card->snd_card); | |
1031 | ||
1032 | switch (level) { | |
1033 | case SNDRV_CTL_POWER_D3hot: | |
1034 | case SNDRV_CTL_POWER_D3cold: | |
1035 | if (widget->ignore_suspend) | |
1036 | dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n", | |
1037 | widget->name); | |
1038 | return widget->ignore_suspend; | |
1039 | default: | |
1040 | return 1; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list, | |
1045 | struct list_head *widgets) | |
1046 | { | |
1047 | struct snd_soc_dapm_widget *w; | |
1048 | struct list_head *it; | |
1049 | unsigned int size = 0; | |
1050 | unsigned int i = 0; | |
1051 | ||
1052 | list_for_each(it, widgets) | |
1053 | size++; | |
1054 | ||
1055 | *list = kzalloc(sizeof(**list) + size * sizeof(*w), GFP_KERNEL); | |
1056 | if (*list == NULL) | |
1057 | return -ENOMEM; | |
1058 | ||
1059 | list_for_each_entry(w, widgets, work_list) | |
1060 | (*list)->widgets[i++] = w; | |
1061 | ||
1062 | (*list)->num_widgets = i; | |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * Common implementation for is_connected_output_ep() and | |
1069 | * is_connected_input_ep(). The function is inlined since the combined size of | |
1070 | * the two specialized functions is only marginally larger then the size of the | |
1071 | * generic function and at the same time the fast path of the specialized | |
1072 | * functions is significantly smaller than the generic function. | |
1073 | */ | |
1074 | static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget, | |
1075 | struct list_head *list, enum snd_soc_dapm_direction dir, | |
1076 | int (*fn)(struct snd_soc_dapm_widget *, struct list_head *)) | |
1077 | { | |
1078 | enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir); | |
1079 | struct snd_soc_dapm_path *path; | |
1080 | int con = 0; | |
1081 | ||
1082 | if (widget->endpoints[dir] >= 0) | |
1083 | return widget->endpoints[dir]; | |
1084 | ||
1085 | DAPM_UPDATE_STAT(widget, path_checks); | |
1086 | ||
1087 | /* do we need to add this widget to the list ? */ | |
1088 | if (list) | |
1089 | list_add_tail(&widget->work_list, list); | |
1090 | ||
1091 | if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) { | |
1092 | widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget); | |
1093 | return widget->endpoints[dir]; | |
1094 | } | |
1095 | ||
1096 | snd_soc_dapm_widget_for_each_path(widget, rdir, path) { | |
1097 | DAPM_UPDATE_STAT(widget, neighbour_checks); | |
1098 | ||
1099 | if (path->weak || path->is_supply) | |
1100 | continue; | |
1101 | ||
1102 | if (path->walking) | |
1103 | return 1; | |
1104 | ||
1105 | trace_snd_soc_dapm_path(widget, dir, path); | |
1106 | ||
1107 | if (path->connect) { | |
1108 | path->walking = 1; | |
1109 | con += fn(path->node[dir], list); | |
1110 | path->walking = 0; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | widget->endpoints[dir] = con; | |
1115 | ||
1116 | return con; | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * Recursively check for a completed path to an active or physically connected | |
1121 | * output widget. Returns number of complete paths. | |
1122 | */ | |
1123 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, | |
1124 | struct list_head *list) | |
1125 | { | |
1126 | return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT, | |
1127 | is_connected_output_ep); | |
1128 | } | |
1129 | ||
1130 | /* | |
1131 | * Recursively check for a completed path to an active or physically connected | |
1132 | * input widget. Returns number of complete paths. | |
1133 | */ | |
1134 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, | |
1135 | struct list_head *list) | |
1136 | { | |
1137 | return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN, | |
1138 | is_connected_input_ep); | |
1139 | } | |
1140 | ||
1141 | /** | |
1142 | * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets. | |
1143 | * @dai: the soc DAI. | |
1144 | * @stream: stream direction. | |
1145 | * @list: list of active widgets for this stream. | |
1146 | * | |
1147 | * Queries DAPM graph as to whether an valid audio stream path exists for | |
1148 | * the initial stream specified by name. This takes into account | |
1149 | * current mixer and mux kcontrol settings. Creates list of valid widgets. | |
1150 | * | |
1151 | * Returns the number of valid paths or negative error. | |
1152 | */ | |
1153 | int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, | |
1154 | struct snd_soc_dapm_widget_list **list) | |
1155 | { | |
1156 | struct snd_soc_card *card = dai->component->card; | |
1157 | struct snd_soc_dapm_widget *w; | |
1158 | LIST_HEAD(widgets); | |
1159 | int paths; | |
1160 | int ret; | |
1161 | ||
1162 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
1163 | ||
1164 | /* | |
1165 | * For is_connected_{output,input}_ep fully discover the graph we need | |
1166 | * to reset the cached number of inputs and outputs. | |
1167 | */ | |
1168 | list_for_each_entry(w, &card->widgets, list) { | |
1169 | w->endpoints[SND_SOC_DAPM_DIR_IN] = -1; | |
1170 | w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1; | |
1171 | } | |
1172 | ||
1173 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1174 | paths = is_connected_output_ep(dai->playback_widget, &widgets); | |
1175 | else | |
1176 | paths = is_connected_input_ep(dai->capture_widget, &widgets); | |
1177 | ||
1178 | /* Drop starting point */ | |
1179 | list_del(widgets.next); | |
1180 | ||
1181 | ret = dapm_widget_list_create(list, &widgets); | |
1182 | if (ret) | |
1183 | paths = ret; | |
1184 | ||
1185 | trace_snd_soc_dapm_connected(paths, stream); | |
1186 | mutex_unlock(&card->dapm_mutex); | |
1187 | ||
1188 | return paths; | |
1189 | } | |
1190 | ||
1191 | /* | |
1192 | * Handler for regulator supply widget. | |
1193 | */ | |
1194 | int dapm_regulator_event(struct snd_soc_dapm_widget *w, | |
1195 | struct snd_kcontrol *kcontrol, int event) | |
1196 | { | |
1197 | int ret; | |
1198 | ||
1199 | soc_dapm_async_complete(w->dapm); | |
1200 | ||
1201 | if (SND_SOC_DAPM_EVENT_ON(event)) { | |
1202 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { | |
1203 | ret = regulator_allow_bypass(w->regulator, false); | |
1204 | if (ret != 0) | |
1205 | dev_warn(w->dapm->dev, | |
1206 | "ASoC: Failed to unbypass %s: %d\n", | |
1207 | w->name, ret); | |
1208 | } | |
1209 | ||
1210 | return regulator_enable(w->regulator); | |
1211 | } else { | |
1212 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { | |
1213 | ret = regulator_allow_bypass(w->regulator, true); | |
1214 | if (ret != 0) | |
1215 | dev_warn(w->dapm->dev, | |
1216 | "ASoC: Failed to bypass %s: %d\n", | |
1217 | w->name, ret); | |
1218 | } | |
1219 | ||
1220 | return regulator_disable_deferred(w->regulator, w->shift); | |
1221 | } | |
1222 | } | |
1223 | EXPORT_SYMBOL_GPL(dapm_regulator_event); | |
1224 | ||
1225 | /* | |
1226 | * Handler for clock supply widget. | |
1227 | */ | |
1228 | int dapm_clock_event(struct snd_soc_dapm_widget *w, | |
1229 | struct snd_kcontrol *kcontrol, int event) | |
1230 | { | |
1231 | if (!w->clk) | |
1232 | return -EIO; | |
1233 | ||
1234 | soc_dapm_async_complete(w->dapm); | |
1235 | ||
1236 | #ifdef CONFIG_HAVE_CLK | |
1237 | if (SND_SOC_DAPM_EVENT_ON(event)) { | |
1238 | return clk_prepare_enable(w->clk); | |
1239 | } else { | |
1240 | clk_disable_unprepare(w->clk); | |
1241 | return 0; | |
1242 | } | |
1243 | #endif | |
1244 | return 0; | |
1245 | } | |
1246 | EXPORT_SYMBOL_GPL(dapm_clock_event); | |
1247 | ||
1248 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) | |
1249 | { | |
1250 | if (w->power_checked) | |
1251 | return w->new_power; | |
1252 | ||
1253 | if (w->force) | |
1254 | w->new_power = 1; | |
1255 | else | |
1256 | w->new_power = w->power_check(w); | |
1257 | ||
1258 | w->power_checked = true; | |
1259 | ||
1260 | return w->new_power; | |
1261 | } | |
1262 | ||
1263 | /* Generic check to see if a widget should be powered. | |
1264 | */ | |
1265 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
1266 | { | |
1267 | int in, out; | |
1268 | ||
1269 | DAPM_UPDATE_STAT(w, power_checks); | |
1270 | ||
1271 | in = is_connected_input_ep(w, NULL); | |
1272 | out = is_connected_output_ep(w, NULL); | |
1273 | return out != 0 && in != 0; | |
1274 | } | |
1275 | ||
1276 | /* Check to see if a power supply is needed */ | |
1277 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
1278 | { | |
1279 | struct snd_soc_dapm_path *path; | |
1280 | ||
1281 | DAPM_UPDATE_STAT(w, power_checks); | |
1282 | ||
1283 | /* Check if one of our outputs is connected */ | |
1284 | snd_soc_dapm_widget_for_each_sink_path(w, path) { | |
1285 | DAPM_UPDATE_STAT(w, neighbour_checks); | |
1286 | ||
1287 | if (path->weak) | |
1288 | continue; | |
1289 | ||
1290 | if (path->connected && | |
1291 | !path->connected(path->source, path->sink)) | |
1292 | continue; | |
1293 | ||
1294 | if (dapm_widget_power_check(path->sink)) | |
1295 | return 1; | |
1296 | } | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) | |
1302 | { | |
1303 | return w->connected; | |
1304 | } | |
1305 | ||
1306 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, | |
1307 | struct snd_soc_dapm_widget *b, | |
1308 | bool power_up) | |
1309 | { | |
1310 | int *sort; | |
1311 | ||
1312 | if (power_up) | |
1313 | sort = dapm_up_seq; | |
1314 | else | |
1315 | sort = dapm_down_seq; | |
1316 | ||
1317 | if (sort[a->id] != sort[b->id]) | |
1318 | return sort[a->id] - sort[b->id]; | |
1319 | if (a->subseq != b->subseq) { | |
1320 | if (power_up) | |
1321 | return a->subseq - b->subseq; | |
1322 | else | |
1323 | return b->subseq - a->subseq; | |
1324 | } | |
1325 | if (a->reg != b->reg) | |
1326 | return a->reg - b->reg; | |
1327 | if (a->dapm != b->dapm) | |
1328 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
1329 | ||
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | /* Insert a widget in order into a DAPM power sequence. */ | |
1334 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
1335 | struct list_head *list, | |
1336 | bool power_up) | |
1337 | { | |
1338 | struct snd_soc_dapm_widget *w; | |
1339 | ||
1340 | list_for_each_entry(w, list, power_list) | |
1341 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { | |
1342 | list_add_tail(&new_widget->power_list, &w->power_list); | |
1343 | return; | |
1344 | } | |
1345 | ||
1346 | list_add_tail(&new_widget->power_list, list); | |
1347 | } | |
1348 | ||
1349 | static void dapm_seq_check_event(struct snd_soc_card *card, | |
1350 | struct snd_soc_dapm_widget *w, int event) | |
1351 | { | |
1352 | const char *ev_name; | |
1353 | int power, ret; | |
1354 | ||
1355 | switch (event) { | |
1356 | case SND_SOC_DAPM_PRE_PMU: | |
1357 | ev_name = "PRE_PMU"; | |
1358 | power = 1; | |
1359 | break; | |
1360 | case SND_SOC_DAPM_POST_PMU: | |
1361 | ev_name = "POST_PMU"; | |
1362 | power = 1; | |
1363 | break; | |
1364 | case SND_SOC_DAPM_PRE_PMD: | |
1365 | ev_name = "PRE_PMD"; | |
1366 | power = 0; | |
1367 | break; | |
1368 | case SND_SOC_DAPM_POST_PMD: | |
1369 | ev_name = "POST_PMD"; | |
1370 | power = 0; | |
1371 | break; | |
1372 | case SND_SOC_DAPM_WILL_PMU: | |
1373 | ev_name = "WILL_PMU"; | |
1374 | power = 1; | |
1375 | break; | |
1376 | case SND_SOC_DAPM_WILL_PMD: | |
1377 | ev_name = "WILL_PMD"; | |
1378 | power = 0; | |
1379 | break; | |
1380 | default: | |
1381 | WARN(1, "Unknown event %d\n", event); | |
1382 | return; | |
1383 | } | |
1384 | ||
1385 | if (w->new_power != power) | |
1386 | return; | |
1387 | ||
1388 | if (w->event && (w->event_flags & event)) { | |
1389 | pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n", | |
1390 | w->name, ev_name); | |
1391 | soc_dapm_async_complete(w->dapm); | |
1392 | trace_snd_soc_dapm_widget_event_start(w, event); | |
1393 | ret = w->event(w, NULL, event); | |
1394 | trace_snd_soc_dapm_widget_event_done(w, event); | |
1395 | if (ret < 0) | |
1396 | dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n", | |
1397 | ev_name, w->name, ret); | |
1398 | } | |
1399 | } | |
1400 | ||
1401 | /* Apply the coalesced changes from a DAPM sequence */ | |
1402 | static void dapm_seq_run_coalesced(struct snd_soc_card *card, | |
1403 | struct list_head *pending) | |
1404 | { | |
1405 | struct snd_soc_dapm_context *dapm; | |
1406 | struct snd_soc_dapm_widget *w; | |
1407 | int reg; | |
1408 | unsigned int value = 0; | |
1409 | unsigned int mask = 0; | |
1410 | ||
1411 | w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list); | |
1412 | reg = w->reg; | |
1413 | dapm = w->dapm; | |
1414 | ||
1415 | list_for_each_entry(w, pending, power_list) { | |
1416 | WARN_ON(reg != w->reg || dapm != w->dapm); | |
1417 | w->power = w->new_power; | |
1418 | ||
1419 | mask |= w->mask << w->shift; | |
1420 | if (w->power) | |
1421 | value |= w->on_val << w->shift; | |
1422 | else | |
1423 | value |= w->off_val << w->shift; | |
1424 | ||
1425 | pop_dbg(dapm->dev, card->pop_time, | |
1426 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", | |
1427 | w->name, reg, value, mask); | |
1428 | ||
1429 | /* Check for events */ | |
1430 | dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU); | |
1431 | dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD); | |
1432 | } | |
1433 | ||
1434 | if (reg >= 0) { | |
1435 | /* Any widget will do, they should all be updating the | |
1436 | * same register. | |
1437 | */ | |
1438 | ||
1439 | pop_dbg(dapm->dev, card->pop_time, | |
1440 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", | |
1441 | value, mask, reg, card->pop_time); | |
1442 | pop_wait(card->pop_time); | |
1443 | soc_dapm_update_bits(dapm, reg, mask, value); | |
1444 | } | |
1445 | ||
1446 | list_for_each_entry(w, pending, power_list) { | |
1447 | dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU); | |
1448 | dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD); | |
1449 | } | |
1450 | } | |
1451 | ||
1452 | /* Apply a DAPM power sequence. | |
1453 | * | |
1454 | * We walk over a pre-sorted list of widgets to apply power to. In | |
1455 | * order to minimise the number of writes to the device required | |
1456 | * multiple widgets will be updated in a single write where possible. | |
1457 | * Currently anything that requires more than a single write is not | |
1458 | * handled. | |
1459 | */ | |
1460 | static void dapm_seq_run(struct snd_soc_card *card, | |
1461 | struct list_head *list, int event, bool power_up) | |
1462 | { | |
1463 | struct snd_soc_dapm_widget *w, *n; | |
1464 | struct snd_soc_dapm_context *d; | |
1465 | LIST_HEAD(pending); | |
1466 | int cur_sort = -1; | |
1467 | int cur_subseq = -1; | |
1468 | int cur_reg = SND_SOC_NOPM; | |
1469 | struct snd_soc_dapm_context *cur_dapm = NULL; | |
1470 | int ret, i; | |
1471 | int *sort; | |
1472 | ||
1473 | if (power_up) | |
1474 | sort = dapm_up_seq; | |
1475 | else | |
1476 | sort = dapm_down_seq; | |
1477 | ||
1478 | list_for_each_entry_safe(w, n, list, power_list) { | |
1479 | ret = 0; | |
1480 | ||
1481 | /* Do we need to apply any queued changes? */ | |
1482 | if (sort[w->id] != cur_sort || w->reg != cur_reg || | |
1483 | w->dapm != cur_dapm || w->subseq != cur_subseq) { | |
1484 | if (!list_empty(&pending)) | |
1485 | dapm_seq_run_coalesced(card, &pending); | |
1486 | ||
1487 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1488 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1489 | if (sort[i] == cur_sort) | |
1490 | cur_dapm->seq_notifier(cur_dapm, | |
1491 | i, | |
1492 | cur_subseq); | |
1493 | } | |
1494 | ||
1495 | if (cur_dapm && w->dapm != cur_dapm) | |
1496 | soc_dapm_async_complete(cur_dapm); | |
1497 | ||
1498 | INIT_LIST_HEAD(&pending); | |
1499 | cur_sort = -1; | |
1500 | cur_subseq = INT_MIN; | |
1501 | cur_reg = SND_SOC_NOPM; | |
1502 | cur_dapm = NULL; | |
1503 | } | |
1504 | ||
1505 | switch (w->id) { | |
1506 | case snd_soc_dapm_pre: | |
1507 | if (!w->event) | |
1508 | list_for_each_entry_safe_continue(w, n, list, | |
1509 | power_list); | |
1510 | ||
1511 | if (event == SND_SOC_DAPM_STREAM_START) | |
1512 | ret = w->event(w, | |
1513 | NULL, SND_SOC_DAPM_PRE_PMU); | |
1514 | else if (event == SND_SOC_DAPM_STREAM_STOP) | |
1515 | ret = w->event(w, | |
1516 | NULL, SND_SOC_DAPM_PRE_PMD); | |
1517 | break; | |
1518 | ||
1519 | case snd_soc_dapm_post: | |
1520 | if (!w->event) | |
1521 | list_for_each_entry_safe_continue(w, n, list, | |
1522 | power_list); | |
1523 | ||
1524 | if (event == SND_SOC_DAPM_STREAM_START) | |
1525 | ret = w->event(w, | |
1526 | NULL, SND_SOC_DAPM_POST_PMU); | |
1527 | else if (event == SND_SOC_DAPM_STREAM_STOP) | |
1528 | ret = w->event(w, | |
1529 | NULL, SND_SOC_DAPM_POST_PMD); | |
1530 | break; | |
1531 | ||
1532 | default: | |
1533 | /* Queue it up for application */ | |
1534 | cur_sort = sort[w->id]; | |
1535 | cur_subseq = w->subseq; | |
1536 | cur_reg = w->reg; | |
1537 | cur_dapm = w->dapm; | |
1538 | list_move(&w->power_list, &pending); | |
1539 | break; | |
1540 | } | |
1541 | ||
1542 | if (ret < 0) | |
1543 | dev_err(w->dapm->dev, | |
1544 | "ASoC: Failed to apply widget power: %d\n", ret); | |
1545 | } | |
1546 | ||
1547 | if (!list_empty(&pending)) | |
1548 | dapm_seq_run_coalesced(card, &pending); | |
1549 | ||
1550 | if (cur_dapm && cur_dapm->seq_notifier) { | |
1551 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
1552 | if (sort[i] == cur_sort) | |
1553 | cur_dapm->seq_notifier(cur_dapm, | |
1554 | i, cur_subseq); | |
1555 | } | |
1556 | ||
1557 | list_for_each_entry(d, &card->dapm_list, list) { | |
1558 | soc_dapm_async_complete(d); | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | static void dapm_widget_update(struct snd_soc_card *card) | |
1563 | { | |
1564 | struct snd_soc_dapm_update *update = card->update; | |
1565 | struct snd_soc_dapm_widget_list *wlist; | |
1566 | struct snd_soc_dapm_widget *w = NULL; | |
1567 | unsigned int wi; | |
1568 | int ret; | |
1569 | ||
1570 | if (!update || !dapm_kcontrol_is_powered(update->kcontrol)) | |
1571 | return; | |
1572 | ||
1573 | wlist = dapm_kcontrol_get_wlist(update->kcontrol); | |
1574 | ||
1575 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
1576 | w = wlist->widgets[wi]; | |
1577 | ||
1578 | if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1579 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1580 | if (ret != 0) | |
1581 | dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n", | |
1582 | w->name, ret); | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | if (!w) | |
1587 | return; | |
1588 | ||
1589 | ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask, | |
1590 | update->val); | |
1591 | if (ret < 0) | |
1592 | dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n", | |
1593 | w->name, ret); | |
1594 | ||
1595 | for (wi = 0; wi < wlist->num_widgets; wi++) { | |
1596 | w = wlist->widgets[wi]; | |
1597 | ||
1598 | if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1599 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1600 | if (ret != 0) | |
1601 | dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n", | |
1602 | w->name, ret); | |
1603 | } | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if | |
1608 | * they're changing state. | |
1609 | */ | |
1610 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1611 | { | |
1612 | struct snd_soc_dapm_context *d = data; | |
1613 | int ret; | |
1614 | ||
1615 | /* If we're off and we're not supposed to be go into STANDBY */ | |
1616 | if (d->bias_level == SND_SOC_BIAS_OFF && | |
1617 | d->target_bias_level != SND_SOC_BIAS_OFF) { | |
1618 | if (d->dev) | |
1619 | pm_runtime_get_sync(d->dev); | |
1620 | ||
1621 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1622 | if (ret != 0) | |
1623 | dev_err(d->dev, | |
1624 | "ASoC: Failed to turn on bias: %d\n", ret); | |
1625 | } | |
1626 | ||
1627 | /* Prepare for a transition to ON or away from ON */ | |
1628 | if ((d->target_bias_level == SND_SOC_BIAS_ON && | |
1629 | d->bias_level != SND_SOC_BIAS_ON) || | |
1630 | (d->target_bias_level != SND_SOC_BIAS_ON && | |
1631 | d->bias_level == SND_SOC_BIAS_ON)) { | |
1632 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); | |
1633 | if (ret != 0) | |
1634 | dev_err(d->dev, | |
1635 | "ASoC: Failed to prepare bias: %d\n", ret); | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | /* Async callback run prior to DAPM sequences - brings to their final | |
1640 | * state. | |
1641 | */ | |
1642 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1643 | { | |
1644 | struct snd_soc_dapm_context *d = data; | |
1645 | int ret; | |
1646 | ||
1647 | /* If we just powered the last thing off drop to standby bias */ | |
1648 | if (d->bias_level == SND_SOC_BIAS_PREPARE && | |
1649 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || | |
1650 | d->target_bias_level == SND_SOC_BIAS_OFF)) { | |
1651 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1652 | if (ret != 0) | |
1653 | dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n", | |
1654 | ret); | |
1655 | } | |
1656 | ||
1657 | /* If we're in standby and can support bias off then do that */ | |
1658 | if (d->bias_level == SND_SOC_BIAS_STANDBY && | |
1659 | d->target_bias_level == SND_SOC_BIAS_OFF) { | |
1660 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); | |
1661 | if (ret != 0) | |
1662 | dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n", | |
1663 | ret); | |
1664 | ||
1665 | if (d->dev) | |
1666 | pm_runtime_put(d->dev); | |
1667 | } | |
1668 | ||
1669 | /* If we just powered up then move to active bias */ | |
1670 | if (d->bias_level == SND_SOC_BIAS_PREPARE && | |
1671 | d->target_bias_level == SND_SOC_BIAS_ON) { | |
1672 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); | |
1673 | if (ret != 0) | |
1674 | dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n", | |
1675 | ret); | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, | |
1680 | bool power, bool connect) | |
1681 | { | |
1682 | /* If a connection is being made or broken then that update | |
1683 | * will have marked the peer dirty, otherwise the widgets are | |
1684 | * not connected and this update has no impact. */ | |
1685 | if (!connect) | |
1686 | return; | |
1687 | ||
1688 | /* If the peer is already in the state we're moving to then we | |
1689 | * won't have an impact on it. */ | |
1690 | if (power != peer->power) | |
1691 | dapm_mark_dirty(peer, "peer state change"); | |
1692 | } | |
1693 | ||
1694 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, | |
1695 | struct list_head *up_list, | |
1696 | struct list_head *down_list) | |
1697 | { | |
1698 | struct snd_soc_dapm_path *path; | |
1699 | ||
1700 | if (w->power == power) | |
1701 | return; | |
1702 | ||
1703 | trace_snd_soc_dapm_widget_power(w, power); | |
1704 | ||
1705 | /* If we changed our power state perhaps our neigbours changed | |
1706 | * also. | |
1707 | */ | |
1708 | snd_soc_dapm_widget_for_each_source_path(w, path) | |
1709 | dapm_widget_set_peer_power(path->source, power, path->connect); | |
1710 | ||
1711 | /* Supplies can't affect their outputs, only their inputs */ | |
1712 | if (!w->is_supply) { | |
1713 | snd_soc_dapm_widget_for_each_sink_path(w, path) | |
1714 | dapm_widget_set_peer_power(path->sink, power, | |
1715 | path->connect); | |
1716 | } | |
1717 | ||
1718 | if (power) | |
1719 | dapm_seq_insert(w, up_list, true); | |
1720 | else | |
1721 | dapm_seq_insert(w, down_list, false); | |
1722 | } | |
1723 | ||
1724 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, | |
1725 | struct list_head *up_list, | |
1726 | struct list_head *down_list) | |
1727 | { | |
1728 | int power; | |
1729 | ||
1730 | switch (w->id) { | |
1731 | case snd_soc_dapm_pre: | |
1732 | dapm_seq_insert(w, down_list, false); | |
1733 | break; | |
1734 | case snd_soc_dapm_post: | |
1735 | dapm_seq_insert(w, up_list, true); | |
1736 | break; | |
1737 | ||
1738 | default: | |
1739 | power = dapm_widget_power_check(w); | |
1740 | ||
1741 | dapm_widget_set_power(w, power, up_list, down_list); | |
1742 | break; | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm) | |
1747 | { | |
1748 | if (dapm->idle_bias_off) | |
1749 | return true; | |
1750 | ||
1751 | switch (snd_power_get_state(dapm->card->snd_card)) { | |
1752 | case SNDRV_CTL_POWER_D3hot: | |
1753 | case SNDRV_CTL_POWER_D3cold: | |
1754 | return dapm->suspend_bias_off; | |
1755 | default: | |
1756 | break; | |
1757 | } | |
1758 | ||
1759 | return false; | |
1760 | } | |
1761 | ||
1762 | /* | |
1763 | * Scan each dapm widget for complete audio path. | |
1764 | * A complete path is a route that has valid endpoints i.e.:- | |
1765 | * | |
1766 | * o DAC to output pin. | |
1767 | * o Input Pin to ADC. | |
1768 | * o Input pin to Output pin (bypass, sidetone) | |
1769 | * o DAC to ADC (loopback). | |
1770 | */ | |
1771 | static int dapm_power_widgets(struct snd_soc_card *card, int event) | |
1772 | { | |
1773 | struct snd_soc_dapm_widget *w; | |
1774 | struct snd_soc_dapm_context *d; | |
1775 | LIST_HEAD(up_list); | |
1776 | LIST_HEAD(down_list); | |
1777 | ASYNC_DOMAIN_EXCLUSIVE(async_domain); | |
1778 | enum snd_soc_bias_level bias; | |
1779 | ||
1780 | lockdep_assert_held(&card->dapm_mutex); | |
1781 | ||
1782 | trace_snd_soc_dapm_start(card); | |
1783 | ||
1784 | list_for_each_entry(d, &card->dapm_list, list) { | |
1785 | if (dapm_idle_bias_off(d)) | |
1786 | d->target_bias_level = SND_SOC_BIAS_OFF; | |
1787 | else | |
1788 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1789 | } | |
1790 | ||
1791 | dapm_reset(card); | |
1792 | ||
1793 | /* Check which widgets we need to power and store them in | |
1794 | * lists indicating if they should be powered up or down. We | |
1795 | * only check widgets that have been flagged as dirty but note | |
1796 | * that new widgets may be added to the dirty list while we | |
1797 | * iterate. | |
1798 | */ | |
1799 | list_for_each_entry(w, &card->dapm_dirty, dirty) { | |
1800 | dapm_power_one_widget(w, &up_list, &down_list); | |
1801 | } | |
1802 | ||
1803 | list_for_each_entry(w, &card->widgets, list) { | |
1804 | switch (w->id) { | |
1805 | case snd_soc_dapm_pre: | |
1806 | case snd_soc_dapm_post: | |
1807 | /* These widgets always need to be powered */ | |
1808 | break; | |
1809 | default: | |
1810 | list_del_init(&w->dirty); | |
1811 | break; | |
1812 | } | |
1813 | ||
1814 | if (w->new_power) { | |
1815 | d = w->dapm; | |
1816 | ||
1817 | /* Supplies and micbiases only bring the | |
1818 | * context up to STANDBY as unless something | |
1819 | * else is active and passing audio they | |
1820 | * generally don't require full power. Signal | |
1821 | * generators are virtual pins and have no | |
1822 | * power impact themselves. | |
1823 | */ | |
1824 | switch (w->id) { | |
1825 | case snd_soc_dapm_siggen: | |
1826 | case snd_soc_dapm_vmid: | |
1827 | break; | |
1828 | case snd_soc_dapm_supply: | |
1829 | case snd_soc_dapm_regulator_supply: | |
1830 | case snd_soc_dapm_clock_supply: | |
1831 | case snd_soc_dapm_micbias: | |
1832 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) | |
1833 | d->target_bias_level = SND_SOC_BIAS_STANDBY; | |
1834 | break; | |
1835 | default: | |
1836 | d->target_bias_level = SND_SOC_BIAS_ON; | |
1837 | break; | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | } | |
1842 | ||
1843 | /* Force all contexts in the card to the same bias state if | |
1844 | * they're not ground referenced. | |
1845 | */ | |
1846 | bias = SND_SOC_BIAS_OFF; | |
1847 | list_for_each_entry(d, &card->dapm_list, list) | |
1848 | if (d->target_bias_level > bias) | |
1849 | bias = d->target_bias_level; | |
1850 | list_for_each_entry(d, &card->dapm_list, list) | |
1851 | if (!dapm_idle_bias_off(d)) | |
1852 | d->target_bias_level = bias; | |
1853 | ||
1854 | trace_snd_soc_dapm_walk_done(card); | |
1855 | ||
1856 | /* Run card bias changes at first */ | |
1857 | dapm_pre_sequence_async(&card->dapm, 0); | |
1858 | /* Run other bias changes in parallel */ | |
1859 | list_for_each_entry(d, &card->dapm_list, list) { | |
1860 | if (d != &card->dapm) | |
1861 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1862 | &async_domain); | |
1863 | } | |
1864 | async_synchronize_full_domain(&async_domain); | |
1865 | ||
1866 | list_for_each_entry(w, &down_list, power_list) { | |
1867 | dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD); | |
1868 | } | |
1869 | ||
1870 | list_for_each_entry(w, &up_list, power_list) { | |
1871 | dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU); | |
1872 | } | |
1873 | ||
1874 | /* Power down widgets first; try to avoid amplifying pops. */ | |
1875 | dapm_seq_run(card, &down_list, event, false); | |
1876 | ||
1877 | dapm_widget_update(card); | |
1878 | ||
1879 | /* Now power up. */ | |
1880 | dapm_seq_run(card, &up_list, event, true); | |
1881 | ||
1882 | /* Run all the bias changes in parallel */ | |
1883 | list_for_each_entry(d, &card->dapm_list, list) { | |
1884 | if (d != &card->dapm) | |
1885 | async_schedule_domain(dapm_post_sequence_async, d, | |
1886 | &async_domain); | |
1887 | } | |
1888 | async_synchronize_full_domain(&async_domain); | |
1889 | /* Run card bias changes at last */ | |
1890 | dapm_post_sequence_async(&card->dapm, 0); | |
1891 | ||
1892 | /* do we need to notify any clients that DAPM event is complete */ | |
1893 | list_for_each_entry(d, &card->dapm_list, list) { | |
1894 | if (d->stream_event) | |
1895 | d->stream_event(d, event); | |
1896 | } | |
1897 | ||
1898 | pop_dbg(card->dev, card->pop_time, | |
1899 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
1900 | pop_wait(card->pop_time); | |
1901 | ||
1902 | trace_snd_soc_dapm_done(card); | |
1903 | ||
1904 | return 0; | |
1905 | } | |
1906 | ||
1907 | #ifdef CONFIG_DEBUG_FS | |
1908 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1909 | char __user *user_buf, | |
1910 | size_t count, loff_t *ppos) | |
1911 | { | |
1912 | struct snd_soc_dapm_widget *w = file->private_data; | |
1913 | struct snd_soc_card *card = w->dapm->card; | |
1914 | enum snd_soc_dapm_direction dir, rdir; | |
1915 | char *buf; | |
1916 | int in, out; | |
1917 | ssize_t ret; | |
1918 | struct snd_soc_dapm_path *p = NULL; | |
1919 | ||
1920 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1921 | if (!buf) | |
1922 | return -ENOMEM; | |
1923 | ||
1924 | mutex_lock(&card->dapm_mutex); | |
1925 | ||
1926 | /* Supply widgets are not handled by is_connected_{input,output}_ep() */ | |
1927 | if (w->is_supply) { | |
1928 | in = 0; | |
1929 | out = 0; | |
1930 | } else { | |
1931 | in = is_connected_input_ep(w, NULL); | |
1932 | out = is_connected_output_ep(w, NULL); | |
1933 | } | |
1934 | ||
1935 | ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", | |
1936 | w->name, w->power ? "On" : "Off", | |
1937 | w->force ? " (forced)" : "", in, out); | |
1938 | ||
1939 | if (w->reg >= 0) | |
1940 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1941 | " - R%d(0x%x) mask 0x%x", | |
1942 | w->reg, w->reg, w->mask << w->shift); | |
1943 | ||
1944 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1945 | ||
1946 | if (w->sname) | |
1947 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1948 | w->sname, | |
1949 | w->active ? "active" : "inactive"); | |
1950 | ||
1951 | snd_soc_dapm_for_each_direction(dir) { | |
1952 | rdir = SND_SOC_DAPM_DIR_REVERSE(dir); | |
1953 | snd_soc_dapm_widget_for_each_path(w, dir, p) { | |
1954 | if (p->connected && !p->connected(w, p->node[rdir])) | |
1955 | continue; | |
1956 | ||
1957 | if (!p->connect) | |
1958 | continue; | |
1959 | ||
1960 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1961 | " %s \"%s\" \"%s\"\n", | |
1962 | (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out", | |
1963 | p->name ? p->name : "static", | |
1964 | p->node[rdir]->name); | |
1965 | } | |
1966 | } | |
1967 | ||
1968 | mutex_unlock(&card->dapm_mutex); | |
1969 | ||
1970 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1971 | ||
1972 | kfree(buf); | |
1973 | return ret; | |
1974 | } | |
1975 | ||
1976 | static const struct file_operations dapm_widget_power_fops = { | |
1977 | .open = simple_open, | |
1978 | .read = dapm_widget_power_read_file, | |
1979 | .llseek = default_llseek, | |
1980 | }; | |
1981 | ||
1982 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, | |
1983 | size_t count, loff_t *ppos) | |
1984 | { | |
1985 | struct snd_soc_dapm_context *dapm = file->private_data; | |
1986 | char *level; | |
1987 | ||
1988 | switch (dapm->bias_level) { | |
1989 | case SND_SOC_BIAS_ON: | |
1990 | level = "On\n"; | |
1991 | break; | |
1992 | case SND_SOC_BIAS_PREPARE: | |
1993 | level = "Prepare\n"; | |
1994 | break; | |
1995 | case SND_SOC_BIAS_STANDBY: | |
1996 | level = "Standby\n"; | |
1997 | break; | |
1998 | case SND_SOC_BIAS_OFF: | |
1999 | level = "Off\n"; | |
2000 | break; | |
2001 | default: | |
2002 | WARN(1, "Unknown bias_level %d\n", dapm->bias_level); | |
2003 | level = "Unknown\n"; | |
2004 | break; | |
2005 | } | |
2006 | ||
2007 | return simple_read_from_buffer(user_buf, count, ppos, level, | |
2008 | strlen(level)); | |
2009 | } | |
2010 | ||
2011 | static const struct file_operations dapm_bias_fops = { | |
2012 | .open = simple_open, | |
2013 | .read = dapm_bias_read_file, | |
2014 | .llseek = default_llseek, | |
2015 | }; | |
2016 | ||
2017 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, | |
2018 | struct dentry *parent) | |
2019 | { | |
2020 | struct dentry *d; | |
2021 | ||
2022 | if (!parent) | |
2023 | return; | |
2024 | ||
2025 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); | |
2026 | ||
2027 | if (!dapm->debugfs_dapm) { | |
2028 | dev_warn(dapm->dev, | |
2029 | "ASoC: Failed to create DAPM debugfs directory\n"); | |
2030 | return; | |
2031 | } | |
2032 | ||
2033 | d = debugfs_create_file("bias_level", 0444, | |
2034 | dapm->debugfs_dapm, dapm, | |
2035 | &dapm_bias_fops); | |
2036 | if (!d) | |
2037 | dev_warn(dapm->dev, | |
2038 | "ASoC: Failed to create bias level debugfs file\n"); | |
2039 | } | |
2040 | ||
2041 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
2042 | { | |
2043 | struct snd_soc_dapm_context *dapm = w->dapm; | |
2044 | struct dentry *d; | |
2045 | ||
2046 | if (!dapm->debugfs_dapm || !w->name) | |
2047 | return; | |
2048 | ||
2049 | d = debugfs_create_file(w->name, 0444, | |
2050 | dapm->debugfs_dapm, w, | |
2051 | &dapm_widget_power_fops); | |
2052 | if (!d) | |
2053 | dev_warn(w->dapm->dev, | |
2054 | "ASoC: Failed to create %s debugfs file\n", | |
2055 | w->name); | |
2056 | } | |
2057 | ||
2058 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) | |
2059 | { | |
2060 | debugfs_remove_recursive(dapm->debugfs_dapm); | |
2061 | } | |
2062 | ||
2063 | #else | |
2064 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, | |
2065 | struct dentry *parent) | |
2066 | { | |
2067 | } | |
2068 | ||
2069 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) | |
2070 | { | |
2071 | } | |
2072 | ||
2073 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) | |
2074 | { | |
2075 | } | |
2076 | ||
2077 | #endif | |
2078 | ||
2079 | /* | |
2080 | * soc_dapm_connect_path() - Connects or disconnects a path | |
2081 | * @path: The path to update | |
2082 | * @connect: The new connect state of the path. True if the path is connected, | |
2083 | * false if it is disconneted. | |
2084 | * @reason: The reason why the path changed (for debugging only) | |
2085 | */ | |
2086 | static void soc_dapm_connect_path(struct snd_soc_dapm_path *path, | |
2087 | bool connect, const char *reason) | |
2088 | { | |
2089 | if (path->connect == connect) | |
2090 | return; | |
2091 | ||
2092 | path->connect = connect; | |
2093 | dapm_mark_dirty(path->source, reason); | |
2094 | dapm_mark_dirty(path->sink, reason); | |
2095 | dapm_path_invalidate(path); | |
2096 | } | |
2097 | ||
2098 | /* test and update the power status of a mux widget */ | |
2099 | static int soc_dapm_mux_update_power(struct snd_soc_card *card, | |
2100 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) | |
2101 | { | |
2102 | struct snd_soc_dapm_path *path; | |
2103 | int found = 0; | |
2104 | bool connect; | |
2105 | ||
2106 | lockdep_assert_held(&card->dapm_mutex); | |
2107 | ||
2108 | /* find dapm widget path assoc with kcontrol */ | |
2109 | dapm_kcontrol_for_each_path(path, kcontrol) { | |
2110 | found = 1; | |
2111 | /* we now need to match the string in the enum to the path */ | |
2112 | if (!(strcmp(path->name, e->texts[mux]))) | |
2113 | connect = true; | |
2114 | else | |
2115 | connect = false; | |
2116 | ||
2117 | soc_dapm_connect_path(path, connect, "mux update"); | |
2118 | } | |
2119 | ||
2120 | if (found) | |
2121 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); | |
2122 | ||
2123 | return found; | |
2124 | } | |
2125 | ||
2126 | int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm, | |
2127 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e, | |
2128 | struct snd_soc_dapm_update *update) | |
2129 | { | |
2130 | struct snd_soc_card *card = dapm->card; | |
2131 | int ret; | |
2132 | ||
2133 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
2134 | card->update = update; | |
2135 | ret = soc_dapm_mux_update_power(card, kcontrol, mux, e); | |
2136 | card->update = NULL; | |
2137 | mutex_unlock(&card->dapm_mutex); | |
2138 | if (ret > 0) | |
2139 | soc_dpcm_runtime_update(card); | |
2140 | return ret; | |
2141 | } | |
2142 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); | |
2143 | ||
2144 | /* test and update the power status of a mixer or switch widget */ | |
2145 | static int soc_dapm_mixer_update_power(struct snd_soc_card *card, | |
2146 | struct snd_kcontrol *kcontrol, int connect) | |
2147 | { | |
2148 | struct snd_soc_dapm_path *path; | |
2149 | int found = 0; | |
2150 | ||
2151 | lockdep_assert_held(&card->dapm_mutex); | |
2152 | ||
2153 | /* find dapm widget path assoc with kcontrol */ | |
2154 | dapm_kcontrol_for_each_path(path, kcontrol) { | |
2155 | found = 1; | |
2156 | soc_dapm_connect_path(path, connect, "mixer update"); | |
2157 | } | |
2158 | ||
2159 | if (found) | |
2160 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); | |
2161 | ||
2162 | return found; | |
2163 | } | |
2164 | ||
2165 | int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm, | |
2166 | struct snd_kcontrol *kcontrol, int connect, | |
2167 | struct snd_soc_dapm_update *update) | |
2168 | { | |
2169 | struct snd_soc_card *card = dapm->card; | |
2170 | int ret; | |
2171 | ||
2172 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
2173 | card->update = update; | |
2174 | ret = soc_dapm_mixer_update_power(card, kcontrol, connect); | |
2175 | card->update = NULL; | |
2176 | mutex_unlock(&card->dapm_mutex); | |
2177 | if (ret > 0) | |
2178 | soc_dpcm_runtime_update(card); | |
2179 | return ret; | |
2180 | } | |
2181 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); | |
2182 | ||
2183 | static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt, | |
2184 | char *buf) | |
2185 | { | |
2186 | struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt); | |
2187 | struct snd_soc_dapm_widget *w; | |
2188 | int count = 0; | |
2189 | char *state = "not set"; | |
2190 | ||
2191 | /* card won't be set for the dummy component, as a spot fix | |
2192 | * we're checking for that case specifically here but in future | |
2193 | * we will ensure that the dummy component looks like others. | |
2194 | */ | |
2195 | if (!cmpnt->card) | |
2196 | return 0; | |
2197 | ||
2198 | list_for_each_entry(w, &cmpnt->card->widgets, list) { | |
2199 | if (w->dapm != dapm) | |
2200 | continue; | |
2201 | ||
2202 | /* only display widgets that burnm power */ | |
2203 | switch (w->id) { | |
2204 | case snd_soc_dapm_hp: | |
2205 | case snd_soc_dapm_mic: | |
2206 | case snd_soc_dapm_spk: | |
2207 | case snd_soc_dapm_line: | |
2208 | case snd_soc_dapm_micbias: | |
2209 | case snd_soc_dapm_dac: | |
2210 | case snd_soc_dapm_adc: | |
2211 | case snd_soc_dapm_pga: | |
2212 | case snd_soc_dapm_out_drv: | |
2213 | case snd_soc_dapm_mixer: | |
2214 | case snd_soc_dapm_mixer_named_ctl: | |
2215 | case snd_soc_dapm_supply: | |
2216 | case snd_soc_dapm_regulator_supply: | |
2217 | case snd_soc_dapm_clock_supply: | |
2218 | if (w->name) | |
2219 | count += sprintf(buf + count, "%s: %s\n", | |
2220 | w->name, w->power ? "On":"Off"); | |
2221 | break; | |
2222 | default: | |
2223 | break; | |
2224 | } | |
2225 | } | |
2226 | ||
2227 | switch (snd_soc_dapm_get_bias_level(dapm)) { | |
2228 | case SND_SOC_BIAS_ON: | |
2229 | state = "On"; | |
2230 | break; | |
2231 | case SND_SOC_BIAS_PREPARE: | |
2232 | state = "Prepare"; | |
2233 | break; | |
2234 | case SND_SOC_BIAS_STANDBY: | |
2235 | state = "Standby"; | |
2236 | break; | |
2237 | case SND_SOC_BIAS_OFF: | |
2238 | state = "Off"; | |
2239 | break; | |
2240 | } | |
2241 | count += sprintf(buf + count, "PM State: %s\n", state); | |
2242 | ||
2243 | return count; | |
2244 | } | |
2245 | ||
2246 | /* show dapm widget status in sys fs */ | |
2247 | static ssize_t dapm_widget_show(struct device *dev, | |
2248 | struct device_attribute *attr, char *buf) | |
2249 | { | |
2250 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); | |
2251 | int i, count = 0; | |
2252 | ||
2253 | mutex_lock(&rtd->card->dapm_mutex); | |
2254 | ||
2255 | for (i = 0; i < rtd->num_codecs; i++) { | |
2256 | struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component; | |
2257 | ||
2258 | count += dapm_widget_show_component(cmpnt, buf + count); | |
2259 | } | |
2260 | ||
2261 | mutex_unlock(&rtd->card->dapm_mutex); | |
2262 | ||
2263 | return count; | |
2264 | } | |
2265 | ||
2266 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
2267 | ||
2268 | struct attribute *soc_dapm_dev_attrs[] = { | |
2269 | &dev_attr_dapm_widget.attr, | |
2270 | NULL | |
2271 | }; | |
2272 | ||
2273 | static void dapm_free_path(struct snd_soc_dapm_path *path) | |
2274 | { | |
2275 | list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]); | |
2276 | list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]); | |
2277 | list_del(&path->list_kcontrol); | |
2278 | list_del(&path->list); | |
2279 | kfree(path); | |
2280 | } | |
2281 | ||
2282 | void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w) | |
2283 | { | |
2284 | struct snd_soc_dapm_path *p, *next_p; | |
2285 | enum snd_soc_dapm_direction dir; | |
2286 | ||
2287 | list_del(&w->list); | |
2288 | /* | |
2289 | * remove source and sink paths associated to this widget. | |
2290 | * While removing the path, remove reference to it from both | |
2291 | * source and sink widgets so that path is removed only once. | |
2292 | */ | |
2293 | snd_soc_dapm_for_each_direction(dir) { | |
2294 | snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p) | |
2295 | dapm_free_path(p); | |
2296 | } | |
2297 | ||
2298 | kfree(w->kcontrols); | |
2299 | kfree_const(w->name); | |
2300 | kfree(w); | |
2301 | } | |
2302 | ||
2303 | void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm) | |
2304 | { | |
2305 | dapm->path_sink_cache.widget = NULL; | |
2306 | dapm->path_source_cache.widget = NULL; | |
2307 | } | |
2308 | ||
2309 | /* free all dapm widgets and resources */ | |
2310 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) | |
2311 | { | |
2312 | struct snd_soc_dapm_widget *w, *next_w; | |
2313 | ||
2314 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { | |
2315 | if (w->dapm != dapm) | |
2316 | continue; | |
2317 | snd_soc_dapm_free_widget(w); | |
2318 | } | |
2319 | snd_soc_dapm_reset_cache(dapm); | |
2320 | } | |
2321 | ||
2322 | static struct snd_soc_dapm_widget *dapm_find_widget( | |
2323 | struct snd_soc_dapm_context *dapm, const char *pin, | |
2324 | bool search_other_contexts) | |
2325 | { | |
2326 | struct snd_soc_dapm_widget *w; | |
2327 | struct snd_soc_dapm_widget *fallback = NULL; | |
2328 | ||
2329 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2330 | if (!strcmp(w->name, pin)) { | |
2331 | if (w->dapm == dapm) | |
2332 | return w; | |
2333 | else | |
2334 | fallback = w; | |
2335 | } | |
2336 | } | |
2337 | ||
2338 | if (search_other_contexts) | |
2339 | return fallback; | |
2340 | ||
2341 | return NULL; | |
2342 | } | |
2343 | ||
2344 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, | |
2345 | const char *pin, int status) | |
2346 | { | |
2347 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
2348 | ||
2349 | dapm_assert_locked(dapm); | |
2350 | ||
2351 | if (!w) { | |
2352 | dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin); | |
2353 | return -EINVAL; | |
2354 | } | |
2355 | ||
2356 | if (w->connected != status) { | |
2357 | dapm_mark_dirty(w, "pin configuration"); | |
2358 | dapm_widget_invalidate_input_paths(w); | |
2359 | dapm_widget_invalidate_output_paths(w); | |
2360 | } | |
2361 | ||
2362 | w->connected = status; | |
2363 | if (status == 0) | |
2364 | w->force = 0; | |
2365 | ||
2366 | return 0; | |
2367 | } | |
2368 | ||
2369 | /** | |
2370 | * snd_soc_dapm_sync_unlocked - scan and power dapm paths | |
2371 | * @dapm: DAPM context | |
2372 | * | |
2373 | * Walks all dapm audio paths and powers widgets according to their | |
2374 | * stream or path usage. | |
2375 | * | |
2376 | * Requires external locking. | |
2377 | * | |
2378 | * Returns 0 for success. | |
2379 | */ | |
2380 | int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm) | |
2381 | { | |
2382 | /* | |
2383 | * Suppress early reports (eg, jacks syncing their state) to avoid | |
2384 | * silly DAPM runs during card startup. | |
2385 | */ | |
2386 | if (!dapm->card || !dapm->card->instantiated) | |
2387 | return 0; | |
2388 | ||
2389 | return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP); | |
2390 | } | |
2391 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked); | |
2392 | ||
2393 | /** | |
2394 | * snd_soc_dapm_sync - scan and power dapm paths | |
2395 | * @dapm: DAPM context | |
2396 | * | |
2397 | * Walks all dapm audio paths and powers widgets according to their | |
2398 | * stream or path usage. | |
2399 | * | |
2400 | * Returns 0 for success. | |
2401 | */ | |
2402 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) | |
2403 | { | |
2404 | int ret; | |
2405 | ||
2406 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
2407 | ret = snd_soc_dapm_sync_unlocked(dapm); | |
2408 | mutex_unlock(&dapm->card->dapm_mutex); | |
2409 | return ret; | |
2410 | } | |
2411 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); | |
2412 | ||
2413 | /* | |
2414 | * dapm_update_widget_flags() - Re-compute widget sink and source flags | |
2415 | * @w: The widget for which to update the flags | |
2416 | * | |
2417 | * Some widgets have a dynamic category which depends on which neighbors they | |
2418 | * are connected to. This function update the category for these widgets. | |
2419 | * | |
2420 | * This function must be called whenever a path is added or removed to a widget. | |
2421 | */ | |
2422 | static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w) | |
2423 | { | |
2424 | enum snd_soc_dapm_direction dir; | |
2425 | struct snd_soc_dapm_path *p; | |
2426 | unsigned int ep; | |
2427 | ||
2428 | switch (w->id) { | |
2429 | case snd_soc_dapm_input: | |
2430 | /* On a fully routed card a input is never a source */ | |
2431 | if (w->dapm->card->fully_routed) | |
2432 | return; | |
2433 | ep = SND_SOC_DAPM_EP_SOURCE; | |
2434 | snd_soc_dapm_widget_for_each_source_path(w, p) { | |
2435 | if (p->source->id == snd_soc_dapm_micbias || | |
2436 | p->source->id == snd_soc_dapm_mic || | |
2437 | p->source->id == snd_soc_dapm_line || | |
2438 | p->source->id == snd_soc_dapm_output) { | |
2439 | ep = 0; | |
2440 | break; | |
2441 | } | |
2442 | } | |
2443 | break; | |
2444 | case snd_soc_dapm_output: | |
2445 | /* On a fully routed card a output is never a sink */ | |
2446 | if (w->dapm->card->fully_routed) | |
2447 | return; | |
2448 | ep = SND_SOC_DAPM_EP_SINK; | |
2449 | snd_soc_dapm_widget_for_each_sink_path(w, p) { | |
2450 | if (p->sink->id == snd_soc_dapm_spk || | |
2451 | p->sink->id == snd_soc_dapm_hp || | |
2452 | p->sink->id == snd_soc_dapm_line || | |
2453 | p->sink->id == snd_soc_dapm_input) { | |
2454 | ep = 0; | |
2455 | break; | |
2456 | } | |
2457 | } | |
2458 | break; | |
2459 | case snd_soc_dapm_line: | |
2460 | ep = 0; | |
2461 | snd_soc_dapm_for_each_direction(dir) { | |
2462 | if (!list_empty(&w->edges[dir])) | |
2463 | ep |= SND_SOC_DAPM_DIR_TO_EP(dir); | |
2464 | } | |
2465 | break; | |
2466 | default: | |
2467 | return; | |
2468 | } | |
2469 | ||
2470 | w->is_ep = ep; | |
2471 | } | |
2472 | ||
2473 | static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm, | |
2474 | struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink, | |
2475 | const char *control) | |
2476 | { | |
2477 | bool dynamic_source = false; | |
2478 | bool dynamic_sink = false; | |
2479 | ||
2480 | if (!control) | |
2481 | return 0; | |
2482 | ||
2483 | switch (source->id) { | |
2484 | case snd_soc_dapm_demux: | |
2485 | dynamic_source = true; | |
2486 | break; | |
2487 | default: | |
2488 | break; | |
2489 | } | |
2490 | ||
2491 | switch (sink->id) { | |
2492 | case snd_soc_dapm_mux: | |
2493 | case snd_soc_dapm_switch: | |
2494 | case snd_soc_dapm_mixer: | |
2495 | case snd_soc_dapm_mixer_named_ctl: | |
2496 | dynamic_sink = true; | |
2497 | break; | |
2498 | default: | |
2499 | break; | |
2500 | } | |
2501 | ||
2502 | if (dynamic_source && dynamic_sink) { | |
2503 | dev_err(dapm->dev, | |
2504 | "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n", | |
2505 | source->name, control, sink->name); | |
2506 | return -EINVAL; | |
2507 | } else if (!dynamic_source && !dynamic_sink) { | |
2508 | dev_err(dapm->dev, | |
2509 | "Control not supported for path %s -> [%s] -> %s\n", | |
2510 | source->name, control, sink->name); | |
2511 | return -EINVAL; | |
2512 | } | |
2513 | ||
2514 | return 0; | |
2515 | } | |
2516 | ||
2517 | static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, | |
2518 | struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink, | |
2519 | const char *control, | |
2520 | int (*connected)(struct snd_soc_dapm_widget *source, | |
2521 | struct snd_soc_dapm_widget *sink)) | |
2522 | { | |
2523 | struct snd_soc_dapm_widget *widgets[2]; | |
2524 | enum snd_soc_dapm_direction dir; | |
2525 | struct snd_soc_dapm_path *path; | |
2526 | int ret; | |
2527 | ||
2528 | if (wsink->is_supply && !wsource->is_supply) { | |
2529 | dev_err(dapm->dev, | |
2530 | "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n", | |
2531 | wsource->name, wsink->name); | |
2532 | return -EINVAL; | |
2533 | } | |
2534 | ||
2535 | if (connected && !wsource->is_supply) { | |
2536 | dev_err(dapm->dev, | |
2537 | "connected() callback only supported for supply widgets (%s -> %s)\n", | |
2538 | wsource->name, wsink->name); | |
2539 | return -EINVAL; | |
2540 | } | |
2541 | ||
2542 | if (wsource->is_supply && control) { | |
2543 | dev_err(dapm->dev, | |
2544 | "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n", | |
2545 | wsource->name, control, wsink->name); | |
2546 | return -EINVAL; | |
2547 | } | |
2548 | ||
2549 | ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control); | |
2550 | if (ret) | |
2551 | return ret; | |
2552 | ||
2553 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
2554 | if (!path) | |
2555 | return -ENOMEM; | |
2556 | ||
2557 | path->node[SND_SOC_DAPM_DIR_IN] = wsource; | |
2558 | path->node[SND_SOC_DAPM_DIR_OUT] = wsink; | |
2559 | widgets[SND_SOC_DAPM_DIR_IN] = wsource; | |
2560 | widgets[SND_SOC_DAPM_DIR_OUT] = wsink; | |
2561 | ||
2562 | path->connected = connected; | |
2563 | INIT_LIST_HEAD(&path->list); | |
2564 | INIT_LIST_HEAD(&path->list_kcontrol); | |
2565 | ||
2566 | if (wsource->is_supply || wsink->is_supply) | |
2567 | path->is_supply = 1; | |
2568 | ||
2569 | /* connect static paths */ | |
2570 | if (control == NULL) { | |
2571 | path->connect = 1; | |
2572 | } else { | |
2573 | switch (wsource->id) { | |
2574 | case snd_soc_dapm_demux: | |
2575 | ret = dapm_connect_mux(dapm, path, control, wsource); | |
2576 | if (ret) | |
2577 | goto err; | |
2578 | break; | |
2579 | default: | |
2580 | break; | |
2581 | } | |
2582 | ||
2583 | switch (wsink->id) { | |
2584 | case snd_soc_dapm_mux: | |
2585 | ret = dapm_connect_mux(dapm, path, control, wsink); | |
2586 | if (ret != 0) | |
2587 | goto err; | |
2588 | break; | |
2589 | case snd_soc_dapm_switch: | |
2590 | case snd_soc_dapm_mixer: | |
2591 | case snd_soc_dapm_mixer_named_ctl: | |
2592 | ret = dapm_connect_mixer(dapm, path, control); | |
2593 | if (ret != 0) | |
2594 | goto err; | |
2595 | break; | |
2596 | default: | |
2597 | break; | |
2598 | } | |
2599 | } | |
2600 | ||
2601 | list_add(&path->list, &dapm->card->paths); | |
2602 | snd_soc_dapm_for_each_direction(dir) | |
2603 | list_add(&path->list_node[dir], &widgets[dir]->edges[dir]); | |
2604 | ||
2605 | snd_soc_dapm_for_each_direction(dir) { | |
2606 | dapm_update_widget_flags(widgets[dir]); | |
2607 | dapm_mark_dirty(widgets[dir], "Route added"); | |
2608 | } | |
2609 | ||
2610 | if (dapm->card->instantiated && path->connect) | |
2611 | dapm_path_invalidate(path); | |
2612 | ||
2613 | return 0; | |
2614 | err: | |
2615 | kfree(path); | |
2616 | return ret; | |
2617 | } | |
2618 | ||
2619 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, | |
2620 | const struct snd_soc_dapm_route *route) | |
2621 | { | |
2622 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
2623 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; | |
2624 | const char *sink; | |
2625 | const char *source; | |
2626 | char prefixed_sink[80]; | |
2627 | char prefixed_source[80]; | |
2628 | const char *prefix; | |
2629 | int ret; | |
2630 | ||
2631 | prefix = soc_dapm_prefix(dapm); | |
2632 | if (prefix) { | |
2633 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", | |
2634 | prefix, route->sink); | |
2635 | sink = prefixed_sink; | |
2636 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
2637 | prefix, route->source); | |
2638 | source = prefixed_source; | |
2639 | } else { | |
2640 | sink = route->sink; | |
2641 | source = route->source; | |
2642 | } | |
2643 | ||
2644 | wsource = dapm_wcache_lookup(&dapm->path_source_cache, source); | |
2645 | wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink); | |
2646 | ||
2647 | if (wsink && wsource) | |
2648 | goto skip_search; | |
2649 | ||
2650 | /* | |
2651 | * find src and dest widgets over all widgets but favor a widget from | |
2652 | * current DAPM context | |
2653 | */ | |
2654 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2655 | if (!wsink && !(strcmp(w->name, sink))) { | |
2656 | wtsink = w; | |
2657 | if (w->dapm == dapm) { | |
2658 | wsink = w; | |
2659 | if (wsource) | |
2660 | break; | |
2661 | } | |
2662 | continue; | |
2663 | } | |
2664 | if (!wsource && !(strcmp(w->name, source))) { | |
2665 | wtsource = w; | |
2666 | if (w->dapm == dapm) { | |
2667 | wsource = w; | |
2668 | if (wsink) | |
2669 | break; | |
2670 | } | |
2671 | } | |
2672 | } | |
2673 | /* use widget from another DAPM context if not found from this */ | |
2674 | if (!wsink) | |
2675 | wsink = wtsink; | |
2676 | if (!wsource) | |
2677 | wsource = wtsource; | |
2678 | ||
2679 | if (wsource == NULL) { | |
2680 | dev_err(dapm->dev, "ASoC: no source widget found for %s\n", | |
2681 | route->source); | |
2682 | return -ENODEV; | |
2683 | } | |
2684 | if (wsink == NULL) { | |
2685 | dev_err(dapm->dev, "ASoC: no sink widget found for %s\n", | |
2686 | route->sink); | |
2687 | return -ENODEV; | |
2688 | } | |
2689 | ||
2690 | skip_search: | |
2691 | dapm_wcache_update(&dapm->path_sink_cache, wsink); | |
2692 | dapm_wcache_update(&dapm->path_source_cache, wsource); | |
2693 | ||
2694 | ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control, | |
2695 | route->connected); | |
2696 | if (ret) | |
2697 | goto err; | |
2698 | ||
2699 | return 0; | |
2700 | err: | |
2701 | dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n", | |
2702 | source, route->control, sink); | |
2703 | return ret; | |
2704 | } | |
2705 | ||
2706 | static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm, | |
2707 | const struct snd_soc_dapm_route *route) | |
2708 | { | |
2709 | struct snd_soc_dapm_widget *wsource, *wsink; | |
2710 | struct snd_soc_dapm_path *path, *p; | |
2711 | const char *sink; | |
2712 | const char *source; | |
2713 | char prefixed_sink[80]; | |
2714 | char prefixed_source[80]; | |
2715 | const char *prefix; | |
2716 | ||
2717 | if (route->control) { | |
2718 | dev_err(dapm->dev, | |
2719 | "ASoC: Removal of routes with controls not supported\n"); | |
2720 | return -EINVAL; | |
2721 | } | |
2722 | ||
2723 | prefix = soc_dapm_prefix(dapm); | |
2724 | if (prefix) { | |
2725 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", | |
2726 | prefix, route->sink); | |
2727 | sink = prefixed_sink; | |
2728 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
2729 | prefix, route->source); | |
2730 | source = prefixed_source; | |
2731 | } else { | |
2732 | sink = route->sink; | |
2733 | source = route->source; | |
2734 | } | |
2735 | ||
2736 | path = NULL; | |
2737 | list_for_each_entry(p, &dapm->card->paths, list) { | |
2738 | if (strcmp(p->source->name, source) != 0) | |
2739 | continue; | |
2740 | if (strcmp(p->sink->name, sink) != 0) | |
2741 | continue; | |
2742 | path = p; | |
2743 | break; | |
2744 | } | |
2745 | ||
2746 | if (path) { | |
2747 | wsource = path->source; | |
2748 | wsink = path->sink; | |
2749 | ||
2750 | dapm_mark_dirty(wsource, "Route removed"); | |
2751 | dapm_mark_dirty(wsink, "Route removed"); | |
2752 | if (path->connect) | |
2753 | dapm_path_invalidate(path); | |
2754 | ||
2755 | dapm_free_path(path); | |
2756 | ||
2757 | /* Update any path related flags */ | |
2758 | dapm_update_widget_flags(wsource); | |
2759 | dapm_update_widget_flags(wsink); | |
2760 | } else { | |
2761 | dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n", | |
2762 | source, sink); | |
2763 | } | |
2764 | ||
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | /** | |
2769 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
2770 | * @dapm: DAPM context | |
2771 | * @route: audio routes | |
2772 | * @num: number of routes | |
2773 | * | |
2774 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
2775 | * the widget receiving the audio signal, whilst the source is the sender | |
2776 | * of the audio signal. | |
2777 | * | |
2778 | * Returns 0 for success else error. On error all resources can be freed | |
2779 | * with a call to snd_soc_card_free(). | |
2780 | */ | |
2781 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, | |
2782 | const struct snd_soc_dapm_route *route, int num) | |
2783 | { | |
2784 | int i, r, ret = 0; | |
2785 | ||
2786 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); | |
2787 | for (i = 0; i < num; i++) { | |
2788 | r = snd_soc_dapm_add_route(dapm, route); | |
2789 | if (r < 0) { | |
2790 | dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n", | |
2791 | route->source, | |
2792 | route->control ? route->control : "direct", | |
2793 | route->sink); | |
2794 | ret = r; | |
2795 | } | |
2796 | route++; | |
2797 | } | |
2798 | mutex_unlock(&dapm->card->dapm_mutex); | |
2799 | ||
2800 | return ret; | |
2801 | } | |
2802 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
2803 | ||
2804 | /** | |
2805 | * snd_soc_dapm_del_routes - Remove routes between DAPM widgets | |
2806 | * @dapm: DAPM context | |
2807 | * @route: audio routes | |
2808 | * @num: number of routes | |
2809 | * | |
2810 | * Removes routes from the DAPM context. | |
2811 | */ | |
2812 | int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm, | |
2813 | const struct snd_soc_dapm_route *route, int num) | |
2814 | { | |
2815 | int i; | |
2816 | ||
2817 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); | |
2818 | for (i = 0; i < num; i++) { | |
2819 | snd_soc_dapm_del_route(dapm, route); | |
2820 | route++; | |
2821 | } | |
2822 | mutex_unlock(&dapm->card->dapm_mutex); | |
2823 | ||
2824 | return 0; | |
2825 | } | |
2826 | EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes); | |
2827 | ||
2828 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, | |
2829 | const struct snd_soc_dapm_route *route) | |
2830 | { | |
2831 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, | |
2832 | route->source, | |
2833 | true); | |
2834 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, | |
2835 | route->sink, | |
2836 | true); | |
2837 | struct snd_soc_dapm_path *path; | |
2838 | int count = 0; | |
2839 | ||
2840 | if (!source) { | |
2841 | dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n", | |
2842 | route->source); | |
2843 | return -ENODEV; | |
2844 | } | |
2845 | ||
2846 | if (!sink) { | |
2847 | dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n", | |
2848 | route->sink); | |
2849 | return -ENODEV; | |
2850 | } | |
2851 | ||
2852 | if (route->control || route->connected) | |
2853 | dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n", | |
2854 | route->source, route->sink); | |
2855 | ||
2856 | snd_soc_dapm_widget_for_each_sink_path(source, path) { | |
2857 | if (path->sink == sink) { | |
2858 | path->weak = 1; | |
2859 | count++; | |
2860 | } | |
2861 | } | |
2862 | ||
2863 | if (count == 0) | |
2864 | dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n", | |
2865 | route->source, route->sink); | |
2866 | if (count > 1) | |
2867 | dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n", | |
2868 | count, route->source, route->sink); | |
2869 | ||
2870 | return 0; | |
2871 | } | |
2872 | ||
2873 | /** | |
2874 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak | |
2875 | * @dapm: DAPM context | |
2876 | * @route: audio routes | |
2877 | * @num: number of routes | |
2878 | * | |
2879 | * Mark existing routes matching those specified in the passed array | |
2880 | * as being weak, meaning that they are ignored for the purpose of | |
2881 | * power decisions. The main intended use case is for sidetone paths | |
2882 | * which couple audio between other independent paths if they are both | |
2883 | * active in order to make the combination work better at the user | |
2884 | * level but which aren't intended to be "used". | |
2885 | * | |
2886 | * Note that CODEC drivers should not use this as sidetone type paths | |
2887 | * can frequently also be used as bypass paths. | |
2888 | */ | |
2889 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, | |
2890 | const struct snd_soc_dapm_route *route, int num) | |
2891 | { | |
2892 | int i, err; | |
2893 | int ret = 0; | |
2894 | ||
2895 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); | |
2896 | for (i = 0; i < num; i++) { | |
2897 | err = snd_soc_dapm_weak_route(dapm, route); | |
2898 | if (err) | |
2899 | ret = err; | |
2900 | route++; | |
2901 | } | |
2902 | mutex_unlock(&dapm->card->dapm_mutex); | |
2903 | ||
2904 | return ret; | |
2905 | } | |
2906 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); | |
2907 | ||
2908 | /** | |
2909 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
2910 | * @card: card to be checked for new dapm widgets | |
2911 | * | |
2912 | * Checks the codec for any new dapm widgets and creates them if found. | |
2913 | * | |
2914 | * Returns 0 for success. | |
2915 | */ | |
2916 | int snd_soc_dapm_new_widgets(struct snd_soc_card *card) | |
2917 | { | |
2918 | struct snd_soc_dapm_widget *w; | |
2919 | unsigned int val; | |
2920 | ||
2921 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); | |
2922 | ||
2923 | list_for_each_entry(w, &card->widgets, list) | |
2924 | { | |
2925 | if (w->new) | |
2926 | continue; | |
2927 | ||
2928 | if (w->num_kcontrols) { | |
2929 | w->kcontrols = kzalloc(w->num_kcontrols * | |
2930 | sizeof(struct snd_kcontrol *), | |
2931 | GFP_KERNEL); | |
2932 | if (!w->kcontrols) { | |
2933 | mutex_unlock(&card->dapm_mutex); | |
2934 | return -ENOMEM; | |
2935 | } | |
2936 | } | |
2937 | ||
2938 | switch(w->id) { | |
2939 | case snd_soc_dapm_switch: | |
2940 | case snd_soc_dapm_mixer: | |
2941 | case snd_soc_dapm_mixer_named_ctl: | |
2942 | dapm_new_mixer(w); | |
2943 | break; | |
2944 | case snd_soc_dapm_mux: | |
2945 | case snd_soc_dapm_demux: | |
2946 | dapm_new_mux(w); | |
2947 | break; | |
2948 | case snd_soc_dapm_pga: | |
2949 | case snd_soc_dapm_out_drv: | |
2950 | dapm_new_pga(w); | |
2951 | break; | |
2952 | case snd_soc_dapm_dai_link: | |
2953 | dapm_new_dai_link(w); | |
2954 | break; | |
2955 | default: | |
2956 | break; | |
2957 | } | |
2958 | ||
2959 | /* Read the initial power state from the device */ | |
2960 | if (w->reg >= 0) { | |
2961 | soc_dapm_read(w->dapm, w->reg, &val); | |
2962 | val = val >> w->shift; | |
2963 | val &= w->mask; | |
2964 | if (val == w->on_val) | |
2965 | w->power = 1; | |
2966 | } | |
2967 | ||
2968 | w->new = 1; | |
2969 | ||
2970 | dapm_mark_dirty(w, "new widget"); | |
2971 | dapm_debugfs_add_widget(w); | |
2972 | } | |
2973 | ||
2974 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); | |
2975 | mutex_unlock(&card->dapm_mutex); | |
2976 | return 0; | |
2977 | } | |
2978 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
2979 | ||
2980 | /** | |
2981 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
2982 | * @kcontrol: mixer control | |
2983 | * @ucontrol: control element information | |
2984 | * | |
2985 | * Callback to get the value of a dapm mixer control. | |
2986 | * | |
2987 | * Returns 0 for success. | |
2988 | */ | |
2989 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
2990 | struct snd_ctl_elem_value *ucontrol) | |
2991 | { | |
2992 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); | |
2993 | struct snd_soc_card *card = dapm->card; | |
2994 | struct soc_mixer_control *mc = | |
2995 | (struct soc_mixer_control *)kcontrol->private_value; | |
2996 | int reg = mc->reg; | |
2997 | unsigned int shift = mc->shift; | |
2998 | int max = mc->max; | |
2999 | unsigned int mask = (1 << fls(max)) - 1; | |
3000 | unsigned int invert = mc->invert; | |
3001 | unsigned int val; | |
3002 | int ret = 0; | |
3003 | ||
3004 | if (snd_soc_volsw_is_stereo(mc)) | |
3005 | dev_warn(dapm->dev, | |
3006 | "ASoC: Control '%s' is stereo, which is not supported\n", | |
3007 | kcontrol->id.name); | |
3008 | ||
3009 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3010 | if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) { | |
3011 | ret = soc_dapm_read(dapm, reg, &val); | |
3012 | val = (val >> shift) & mask; | |
3013 | } else { | |
3014 | val = dapm_kcontrol_get_value(kcontrol); | |
3015 | } | |
3016 | mutex_unlock(&card->dapm_mutex); | |
3017 | ||
3018 | if (invert) | |
3019 | ucontrol->value.integer.value[0] = max - val; | |
3020 | else | |
3021 | ucontrol->value.integer.value[0] = val; | |
3022 | ||
3023 | return ret; | |
3024 | } | |
3025 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
3026 | ||
3027 | /** | |
3028 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
3029 | * @kcontrol: mixer control | |
3030 | * @ucontrol: control element information | |
3031 | * | |
3032 | * Callback to set the value of a dapm mixer control. | |
3033 | * | |
3034 | * Returns 0 for success. | |
3035 | */ | |
3036 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
3037 | struct snd_ctl_elem_value *ucontrol) | |
3038 | { | |
3039 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); | |
3040 | struct snd_soc_card *card = dapm->card; | |
3041 | struct soc_mixer_control *mc = | |
3042 | (struct soc_mixer_control *)kcontrol->private_value; | |
3043 | int reg = mc->reg; | |
3044 | unsigned int shift = mc->shift; | |
3045 | int max = mc->max; | |
3046 | unsigned int mask = (1 << fls(max)) - 1; | |
3047 | unsigned int invert = mc->invert; | |
3048 | unsigned int val; | |
3049 | int connect, change, reg_change = 0; | |
3050 | struct snd_soc_dapm_update update; | |
3051 | int ret = 0; | |
3052 | ||
3053 | if (snd_soc_volsw_is_stereo(mc)) | |
3054 | dev_warn(dapm->dev, | |
3055 | "ASoC: Control '%s' is stereo, which is not supported\n", | |
3056 | kcontrol->id.name); | |
3057 | ||
3058 | val = (ucontrol->value.integer.value[0] & mask); | |
3059 | connect = !!val; | |
3060 | ||
3061 | if (invert) | |
3062 | val = max - val; | |
3063 | ||
3064 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3065 | ||
3066 | change = dapm_kcontrol_set_value(kcontrol, val); | |
3067 | ||
3068 | if (reg != SND_SOC_NOPM) { | |
3069 | mask = mask << shift; | |
3070 | val = val << shift; | |
3071 | ||
3072 | reg_change = soc_dapm_test_bits(dapm, reg, mask, val); | |
3073 | } | |
3074 | ||
3075 | if (change || reg_change) { | |
3076 | if (reg_change) { | |
3077 | update.kcontrol = kcontrol; | |
3078 | update.reg = reg; | |
3079 | update.mask = mask; | |
3080 | update.val = val; | |
3081 | card->update = &update; | |
3082 | } | |
3083 | change |= reg_change; | |
3084 | ||
3085 | ret = soc_dapm_mixer_update_power(card, kcontrol, connect); | |
3086 | ||
3087 | card->update = NULL; | |
3088 | } | |
3089 | ||
3090 | mutex_unlock(&card->dapm_mutex); | |
3091 | ||
3092 | if (ret > 0) | |
3093 | soc_dpcm_runtime_update(card); | |
3094 | ||
3095 | return change; | |
3096 | } | |
3097 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
3098 | ||
3099 | /** | |
3100 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
3101 | * @kcontrol: mixer control | |
3102 | * @ucontrol: control element information | |
3103 | * | |
3104 | * Callback to get the value of a dapm enumerated double mixer control. | |
3105 | * | |
3106 | * Returns 0 for success. | |
3107 | */ | |
3108 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
3109 | struct snd_ctl_elem_value *ucontrol) | |
3110 | { | |
3111 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); | |
3112 | struct snd_soc_card *card = dapm->card; | |
3113 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3114 | unsigned int reg_val, val; | |
3115 | ||
3116 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3117 | if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) { | |
3118 | int ret = soc_dapm_read(dapm, e->reg, ®_val); | |
3119 | if (ret) { | |
3120 | mutex_unlock(&card->dapm_mutex); | |
3121 | return ret; | |
3122 | } | |
3123 | } else { | |
3124 | reg_val = dapm_kcontrol_get_value(kcontrol); | |
3125 | } | |
3126 | mutex_unlock(&card->dapm_mutex); | |
3127 | ||
3128 | val = (reg_val >> e->shift_l) & e->mask; | |
3129 | ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val); | |
3130 | if (e->shift_l != e->shift_r) { | |
3131 | val = (reg_val >> e->shift_r) & e->mask; | |
3132 | val = snd_soc_enum_val_to_item(e, val); | |
3133 | ucontrol->value.enumerated.item[1] = val; | |
3134 | } | |
3135 | ||
3136 | return 0; | |
3137 | } | |
3138 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
3139 | ||
3140 | /** | |
3141 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
3142 | * @kcontrol: mixer control | |
3143 | * @ucontrol: control element information | |
3144 | * | |
3145 | * Callback to set the value of a dapm enumerated double mixer control. | |
3146 | * | |
3147 | * Returns 0 for success. | |
3148 | */ | |
3149 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
3150 | struct snd_ctl_elem_value *ucontrol) | |
3151 | { | |
3152 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); | |
3153 | struct snd_soc_card *card = dapm->card; | |
3154 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3155 | unsigned int *item = ucontrol->value.enumerated.item; | |
3156 | unsigned int val, change, reg_change = 0; | |
3157 | unsigned int mask; | |
3158 | struct snd_soc_dapm_update update; | |
3159 | int ret = 0; | |
3160 | ||
3161 | if (item[0] >= e->items) | |
3162 | return -EINVAL; | |
3163 | ||
3164 | val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; | |
3165 | mask = e->mask << e->shift_l; | |
3166 | if (e->shift_l != e->shift_r) { | |
3167 | if (item[1] > e->items) | |
3168 | return -EINVAL; | |
3169 | val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l; | |
3170 | mask |= e->mask << e->shift_r; | |
3171 | } | |
3172 | ||
3173 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3174 | ||
3175 | change = dapm_kcontrol_set_value(kcontrol, val); | |
3176 | ||
3177 | if (e->reg != SND_SOC_NOPM) | |
3178 | reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val); | |
3179 | ||
3180 | if (change || reg_change) { | |
3181 | if (reg_change) { | |
3182 | update.kcontrol = kcontrol; | |
3183 | update.reg = e->reg; | |
3184 | update.mask = mask; | |
3185 | update.val = val; | |
3186 | card->update = &update; | |
3187 | } | |
3188 | change |= reg_change; | |
3189 | ||
3190 | ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e); | |
3191 | ||
3192 | card->update = NULL; | |
3193 | } | |
3194 | ||
3195 | mutex_unlock(&card->dapm_mutex); | |
3196 | ||
3197 | if (ret > 0) | |
3198 | soc_dpcm_runtime_update(card); | |
3199 | ||
3200 | return change; | |
3201 | } | |
3202 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
3203 | ||
3204 | /** | |
3205 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
3206 | * | |
3207 | * @kcontrol: mixer control | |
3208 | * @uinfo: control element information | |
3209 | * | |
3210 | * Callback to provide information about a pin switch control. | |
3211 | */ | |
3212 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
3213 | struct snd_ctl_elem_info *uinfo) | |
3214 | { | |
3215 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
3216 | uinfo->count = 1; | |
3217 | uinfo->value.integer.min = 0; | |
3218 | uinfo->value.integer.max = 1; | |
3219 | ||
3220 | return 0; | |
3221 | } | |
3222 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
3223 | ||
3224 | /** | |
3225 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
3226 | * | |
3227 | * @kcontrol: mixer control | |
3228 | * @ucontrol: Value | |
3229 | */ | |
3230 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
3231 | struct snd_ctl_elem_value *ucontrol) | |
3232 | { | |
3233 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); | |
3234 | const char *pin = (const char *)kcontrol->private_value; | |
3235 | ||
3236 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3237 | ||
3238 | ucontrol->value.integer.value[0] = | |
3239 | snd_soc_dapm_get_pin_status(&card->dapm, pin); | |
3240 | ||
3241 | mutex_unlock(&card->dapm_mutex); | |
3242 | ||
3243 | return 0; | |
3244 | } | |
3245 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
3246 | ||
3247 | /** | |
3248 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
3249 | * | |
3250 | * @kcontrol: mixer control | |
3251 | * @ucontrol: Value | |
3252 | */ | |
3253 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
3254 | struct snd_ctl_elem_value *ucontrol) | |
3255 | { | |
3256 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); | |
3257 | const char *pin = (const char *)kcontrol->private_value; | |
3258 | ||
3259 | if (ucontrol->value.integer.value[0]) | |
3260 | snd_soc_dapm_enable_pin(&card->dapm, pin); | |
3261 | else | |
3262 | snd_soc_dapm_disable_pin(&card->dapm, pin); | |
3263 | ||
3264 | snd_soc_dapm_sync(&card->dapm); | |
3265 | return 0; | |
3266 | } | |
3267 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
3268 | ||
3269 | struct snd_soc_dapm_widget * | |
3270 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, | |
3271 | const struct snd_soc_dapm_widget *widget) | |
3272 | { | |
3273 | struct snd_soc_dapm_widget *w; | |
3274 | ||
3275 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3276 | w = snd_soc_dapm_new_control_unlocked(dapm, widget); | |
3277 | if (!w) | |
3278 | dev_err(dapm->dev, | |
3279 | "ASoC: Failed to create DAPM control %s\n", | |
3280 | widget->name); | |
3281 | ||
3282 | mutex_unlock(&dapm->card->dapm_mutex); | |
3283 | return w; | |
3284 | } | |
3285 | ||
3286 | struct snd_soc_dapm_widget * | |
3287 | snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, | |
3288 | const struct snd_soc_dapm_widget *widget) | |
3289 | { | |
3290 | enum snd_soc_dapm_direction dir; | |
3291 | struct snd_soc_dapm_widget *w; | |
3292 | const char *prefix; | |
3293 | int ret; | |
3294 | ||
3295 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
3296 | return NULL; | |
3297 | ||
3298 | switch (w->id) { | |
3299 | case snd_soc_dapm_regulator_supply: | |
3300 | w->regulator = devm_regulator_get(dapm->dev, w->name); | |
3301 | if (IS_ERR(w->regulator)) { | |
3302 | ret = PTR_ERR(w->regulator); | |
3303 | dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", | |
3304 | w->name, ret); | |
3305 | return NULL; | |
3306 | } | |
3307 | ||
3308 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { | |
3309 | ret = regulator_allow_bypass(w->regulator, true); | |
3310 | if (ret != 0) | |
3311 | dev_warn(w->dapm->dev, | |
3312 | "ASoC: Failed to bypass %s: %d\n", | |
3313 | w->name, ret); | |
3314 | } | |
3315 | break; | |
3316 | case snd_soc_dapm_clock_supply: | |
3317 | #ifdef CONFIG_CLKDEV_LOOKUP | |
3318 | w->clk = devm_clk_get(dapm->dev, w->name); | |
3319 | if (IS_ERR(w->clk)) { | |
3320 | ret = PTR_ERR(w->clk); | |
3321 | dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", | |
3322 | w->name, ret); | |
3323 | return NULL; | |
3324 | } | |
3325 | #else | |
3326 | return NULL; | |
3327 | #endif | |
3328 | break; | |
3329 | default: | |
3330 | break; | |
3331 | } | |
3332 | ||
3333 | prefix = soc_dapm_prefix(dapm); | |
3334 | if (prefix) | |
3335 | w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name); | |
3336 | else | |
3337 | w->name = kstrdup_const(widget->name, GFP_KERNEL); | |
3338 | if (w->name == NULL) { | |
3339 | kfree(w); | |
3340 | return NULL; | |
3341 | } | |
3342 | ||
3343 | switch (w->id) { | |
3344 | case snd_soc_dapm_mic: | |
3345 | w->is_ep = SND_SOC_DAPM_EP_SOURCE; | |
3346 | w->power_check = dapm_generic_check_power; | |
3347 | break; | |
3348 | case snd_soc_dapm_input: | |
3349 | if (!dapm->card->fully_routed) | |
3350 | w->is_ep = SND_SOC_DAPM_EP_SOURCE; | |
3351 | w->power_check = dapm_generic_check_power; | |
3352 | break; | |
3353 | case snd_soc_dapm_spk: | |
3354 | case snd_soc_dapm_hp: | |
3355 | w->is_ep = SND_SOC_DAPM_EP_SINK; | |
3356 | w->power_check = dapm_generic_check_power; | |
3357 | break; | |
3358 | case snd_soc_dapm_output: | |
3359 | if (!dapm->card->fully_routed) | |
3360 | w->is_ep = SND_SOC_DAPM_EP_SINK; | |
3361 | w->power_check = dapm_generic_check_power; | |
3362 | break; | |
3363 | case snd_soc_dapm_vmid: | |
3364 | case snd_soc_dapm_siggen: | |
3365 | w->is_ep = SND_SOC_DAPM_EP_SOURCE; | |
3366 | w->power_check = dapm_always_on_check_power; | |
3367 | break; | |
3368 | case snd_soc_dapm_sink: | |
3369 | w->is_ep = SND_SOC_DAPM_EP_SINK; | |
3370 | w->power_check = dapm_always_on_check_power; | |
3371 | break; | |
3372 | ||
3373 | case snd_soc_dapm_mux: | |
3374 | case snd_soc_dapm_demux: | |
3375 | case snd_soc_dapm_switch: | |
3376 | case snd_soc_dapm_mixer: | |
3377 | case snd_soc_dapm_mixer_named_ctl: | |
3378 | case snd_soc_dapm_adc: | |
3379 | case snd_soc_dapm_aif_out: | |
3380 | case snd_soc_dapm_dac: | |
3381 | case snd_soc_dapm_aif_in: | |
3382 | case snd_soc_dapm_pga: | |
3383 | case snd_soc_dapm_out_drv: | |
3384 | case snd_soc_dapm_micbias: | |
3385 | case snd_soc_dapm_line: | |
3386 | case snd_soc_dapm_dai_link: | |
3387 | case snd_soc_dapm_dai_out: | |
3388 | case snd_soc_dapm_dai_in: | |
3389 | w->power_check = dapm_generic_check_power; | |
3390 | break; | |
3391 | case snd_soc_dapm_supply: | |
3392 | case snd_soc_dapm_regulator_supply: | |
3393 | case snd_soc_dapm_clock_supply: | |
3394 | case snd_soc_dapm_kcontrol: | |
3395 | w->is_supply = 1; | |
3396 | w->power_check = dapm_supply_check_power; | |
3397 | break; | |
3398 | default: | |
3399 | w->power_check = dapm_always_on_check_power; | |
3400 | break; | |
3401 | } | |
3402 | ||
3403 | w->dapm = dapm; | |
3404 | INIT_LIST_HEAD(&w->list); | |
3405 | INIT_LIST_HEAD(&w->dirty); | |
3406 | list_add_tail(&w->list, &dapm->card->widgets); | |
3407 | ||
3408 | snd_soc_dapm_for_each_direction(dir) { | |
3409 | INIT_LIST_HEAD(&w->edges[dir]); | |
3410 | w->endpoints[dir] = -1; | |
3411 | } | |
3412 | ||
3413 | /* machine layer set ups unconnected pins and insertions */ | |
3414 | w->connected = 1; | |
3415 | return w; | |
3416 | } | |
3417 | ||
3418 | /** | |
3419 | * snd_soc_dapm_new_controls - create new dapm controls | |
3420 | * @dapm: DAPM context | |
3421 | * @widget: widget array | |
3422 | * @num: number of widgets | |
3423 | * | |
3424 | * Creates new DAPM controls based upon the templates. | |
3425 | * | |
3426 | * Returns 0 for success else error. | |
3427 | */ | |
3428 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, | |
3429 | const struct snd_soc_dapm_widget *widget, | |
3430 | int num) | |
3431 | { | |
3432 | struct snd_soc_dapm_widget *w; | |
3433 | int i; | |
3434 | int ret = 0; | |
3435 | ||
3436 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); | |
3437 | for (i = 0; i < num; i++) { | |
3438 | w = snd_soc_dapm_new_control_unlocked(dapm, widget); | |
3439 | if (!w) { | |
3440 | dev_err(dapm->dev, | |
3441 | "ASoC: Failed to create DAPM control %s\n", | |
3442 | widget->name); | |
3443 | ret = -ENOMEM; | |
3444 | break; | |
3445 | } | |
3446 | widget++; | |
3447 | } | |
3448 | mutex_unlock(&dapm->card->dapm_mutex); | |
3449 | return ret; | |
3450 | } | |
3451 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
3452 | ||
3453 | static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, | |
3454 | struct snd_kcontrol *kcontrol, int event) | |
3455 | { | |
3456 | struct snd_soc_dapm_path *source_p, *sink_p; | |
3457 | struct snd_soc_dai *source, *sink; | |
3458 | const struct snd_soc_pcm_stream *config = w->params + w->params_select; | |
3459 | struct snd_pcm_substream substream; | |
3460 | struct snd_pcm_hw_params *params = NULL; | |
3461 | u64 fmt; | |
3462 | int ret; | |
3463 | ||
3464 | if (WARN_ON(!config) || | |
3465 | WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) || | |
3466 | list_empty(&w->edges[SND_SOC_DAPM_DIR_IN]))) | |
3467 | return -EINVAL; | |
3468 | ||
3469 | /* We only support a single source and sink, pick the first */ | |
3470 | source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT], | |
3471 | struct snd_soc_dapm_path, | |
3472 | list_node[SND_SOC_DAPM_DIR_OUT]); | |
3473 | sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN], | |
3474 | struct snd_soc_dapm_path, | |
3475 | list_node[SND_SOC_DAPM_DIR_IN]); | |
3476 | ||
3477 | source = source_p->source->priv; | |
3478 | sink = sink_p->sink->priv; | |
3479 | ||
3480 | /* Be a little careful as we don't want to overflow the mask array */ | |
3481 | if (config->formats) { | |
3482 | fmt = ffs(config->formats) - 1; | |
3483 | } else { | |
3484 | dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", | |
3485 | config->formats); | |
3486 | fmt = 0; | |
3487 | } | |
3488 | ||
3489 | /* Currently very limited parameter selection */ | |
3490 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3491 | if (!params) { | |
3492 | ret = -ENOMEM; | |
3493 | goto out; | |
3494 | } | |
3495 | snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); | |
3496 | ||
3497 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = | |
3498 | config->rate_min; | |
3499 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = | |
3500 | config->rate_max; | |
3501 | ||
3502 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min | |
3503 | = config->channels_min; | |
3504 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max | |
3505 | = config->channels_max; | |
3506 | ||
3507 | memset(&substream, 0, sizeof(substream)); | |
3508 | ||
3509 | switch (event) { | |
3510 | case SND_SOC_DAPM_PRE_PMU: | |
3511 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; | |
3512 | if (source->driver->ops && source->driver->ops->startup) { | |
3513 | ret = source->driver->ops->startup(&substream, source); | |
3514 | if (ret < 0) { | |
3515 | dev_err(source->dev, | |
3516 | "ASoC: startup() failed: %d\n", ret); | |
3517 | goto out; | |
3518 | } | |
3519 | source->active++; | |
3520 | } | |
3521 | ret = soc_dai_hw_params(&substream, params, source); | |
3522 | if (ret < 0) | |
3523 | goto out; | |
3524 | ||
3525 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; | |
3526 | if (sink->driver->ops && sink->driver->ops->startup) { | |
3527 | ret = sink->driver->ops->startup(&substream, sink); | |
3528 | if (ret < 0) { | |
3529 | dev_err(sink->dev, | |
3530 | "ASoC: startup() failed: %d\n", ret); | |
3531 | goto out; | |
3532 | } | |
3533 | sink->active++; | |
3534 | } | |
3535 | ret = soc_dai_hw_params(&substream, params, sink); | |
3536 | if (ret < 0) | |
3537 | goto out; | |
3538 | break; | |
3539 | ||
3540 | case SND_SOC_DAPM_POST_PMU: | |
3541 | ret = snd_soc_dai_digital_mute(sink, 0, | |
3542 | SNDRV_PCM_STREAM_PLAYBACK); | |
3543 | if (ret != 0 && ret != -ENOTSUPP) | |
3544 | dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret); | |
3545 | ret = 0; | |
3546 | break; | |
3547 | ||
3548 | case SND_SOC_DAPM_PRE_PMD: | |
3549 | ret = snd_soc_dai_digital_mute(sink, 1, | |
3550 | SNDRV_PCM_STREAM_PLAYBACK); | |
3551 | if (ret != 0 && ret != -ENOTSUPP) | |
3552 | dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret); | |
3553 | ret = 0; | |
3554 | ||
3555 | source->active--; | |
3556 | if (source->driver->ops && source->driver->ops->shutdown) { | |
3557 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; | |
3558 | source->driver->ops->shutdown(&substream, source); | |
3559 | } | |
3560 | ||
3561 | sink->active--; | |
3562 | if (sink->driver->ops && sink->driver->ops->shutdown) { | |
3563 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; | |
3564 | sink->driver->ops->shutdown(&substream, sink); | |
3565 | } | |
3566 | break; | |
3567 | ||
3568 | default: | |
3569 | WARN(1, "Unknown event %d\n", event); | |
3570 | ret = -EINVAL; | |
3571 | } | |
3572 | ||
3573 | out: | |
3574 | kfree(params); | |
3575 | return ret; | |
3576 | } | |
3577 | ||
3578 | static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol, | |
3579 | struct snd_ctl_elem_value *ucontrol) | |
3580 | { | |
3581 | struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol); | |
3582 | ||
3583 | ucontrol->value.enumerated.item[0] = w->params_select; | |
3584 | ||
3585 | return 0; | |
3586 | } | |
3587 | ||
3588 | static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol, | |
3589 | struct snd_ctl_elem_value *ucontrol) | |
3590 | { | |
3591 | struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol); | |
3592 | ||
3593 | /* Can't change the config when widget is already powered */ | |
3594 | if (w->power) | |
3595 | return -EBUSY; | |
3596 | ||
3597 | if (ucontrol->value.enumerated.item[0] == w->params_select) | |
3598 | return 0; | |
3599 | ||
3600 | if (ucontrol->value.enumerated.item[0] >= w->num_params) | |
3601 | return -EINVAL; | |
3602 | ||
3603 | w->params_select = ucontrol->value.enumerated.item[0]; | |
3604 | ||
3605 | return 0; | |
3606 | } | |
3607 | ||
3608 | int snd_soc_dapm_new_pcm(struct snd_soc_card *card, | |
3609 | const struct snd_soc_pcm_stream *params, | |
3610 | unsigned int num_params, | |
3611 | struct snd_soc_dapm_widget *source, | |
3612 | struct snd_soc_dapm_widget *sink) | |
3613 | { | |
3614 | struct snd_soc_dapm_widget template; | |
3615 | struct snd_soc_dapm_widget *w; | |
3616 | char *link_name; | |
3617 | int ret, count; | |
3618 | unsigned long private_value; | |
3619 | const char **w_param_text; | |
3620 | struct soc_enum w_param_enum[] = { | |
3621 | SOC_ENUM_SINGLE(0, 0, 0, NULL), | |
3622 | }; | |
3623 | struct snd_kcontrol_new kcontrol_dai_link[] = { | |
3624 | SOC_ENUM_EXT(NULL, w_param_enum[0], | |
3625 | snd_soc_dapm_dai_link_get, | |
3626 | snd_soc_dapm_dai_link_put), | |
3627 | }; | |
3628 | const struct snd_soc_pcm_stream *config = params; | |
3629 | ||
3630 | w_param_text = devm_kcalloc(card->dev, num_params, | |
3631 | sizeof(char *), GFP_KERNEL); | |
3632 | if (!w_param_text) | |
3633 | return -ENOMEM; | |
3634 | ||
3635 | link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s", | |
3636 | source->name, sink->name); | |
3637 | if (!link_name) { | |
3638 | ret = -ENOMEM; | |
3639 | goto outfree_w_param; | |
3640 | } | |
3641 | ||
3642 | for (count = 0 ; count < num_params; count++) { | |
3643 | if (!config->stream_name) { | |
3644 | dev_warn(card->dapm.dev, | |
3645 | "ASoC: anonymous config %d for dai link %s\n", | |
3646 | count, link_name); | |
3647 | w_param_text[count] = | |
3648 | devm_kasprintf(card->dev, GFP_KERNEL, | |
3649 | "Anonymous Configuration %d", | |
3650 | count); | |
3651 | if (!w_param_text[count]) { | |
3652 | ret = -ENOMEM; | |
3653 | goto outfree_link_name; | |
3654 | } | |
3655 | } else { | |
3656 | w_param_text[count] = devm_kmemdup(card->dev, | |
3657 | config->stream_name, | |
3658 | strlen(config->stream_name) + 1, | |
3659 | GFP_KERNEL); | |
3660 | if (!w_param_text[count]) { | |
3661 | ret = -ENOMEM; | |
3662 | goto outfree_link_name; | |
3663 | } | |
3664 | } | |
3665 | config++; | |
3666 | } | |
3667 | w_param_enum[0].items = num_params; | |
3668 | w_param_enum[0].texts = w_param_text; | |
3669 | ||
3670 | memset(&template, 0, sizeof(template)); | |
3671 | template.reg = SND_SOC_NOPM; | |
3672 | template.id = snd_soc_dapm_dai_link; | |
3673 | template.name = link_name; | |
3674 | template.event = snd_soc_dai_link_event; | |
3675 | template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | | |
3676 | SND_SOC_DAPM_PRE_PMD; | |
3677 | template.num_kcontrols = 1; | |
3678 | /* duplicate w_param_enum on heap so that memory persists */ | |
3679 | private_value = | |
3680 | (unsigned long) devm_kmemdup(card->dev, | |
3681 | (void *)(kcontrol_dai_link[0].private_value), | |
3682 | sizeof(struct soc_enum), GFP_KERNEL); | |
3683 | if (!private_value) { | |
3684 | dev_err(card->dev, "ASoC: Failed to create control for %s widget\n", | |
3685 | link_name); | |
3686 | ret = -ENOMEM; | |
3687 | goto outfree_link_name; | |
3688 | } | |
3689 | kcontrol_dai_link[0].private_value = private_value; | |
3690 | /* duplicate kcontrol_dai_link on heap so that memory persists */ | |
3691 | template.kcontrol_news = | |
3692 | devm_kmemdup(card->dev, &kcontrol_dai_link[0], | |
3693 | sizeof(struct snd_kcontrol_new), | |
3694 | GFP_KERNEL); | |
3695 | if (!template.kcontrol_news) { | |
3696 | dev_err(card->dev, "ASoC: Failed to create control for %s widget\n", | |
3697 | link_name); | |
3698 | ret = -ENOMEM; | |
3699 | goto outfree_private_value; | |
3700 | } | |
3701 | ||
3702 | dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name); | |
3703 | ||
3704 | w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template); | |
3705 | if (!w) { | |
3706 | dev_err(card->dev, "ASoC: Failed to create %s widget\n", | |
3707 | link_name); | |
3708 | ret = -ENOMEM; | |
3709 | goto outfree_kcontrol_news; | |
3710 | } | |
3711 | ||
3712 | w->params = params; | |
3713 | w->num_params = num_params; | |
3714 | ||
3715 | ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL); | |
3716 | if (ret) | |
3717 | goto outfree_w; | |
3718 | return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL); | |
3719 | ||
3720 | outfree_w: | |
3721 | devm_kfree(card->dev, w); | |
3722 | outfree_kcontrol_news: | |
3723 | devm_kfree(card->dev, (void *)template.kcontrol_news); | |
3724 | outfree_private_value: | |
3725 | devm_kfree(card->dev, (void *)private_value); | |
3726 | outfree_link_name: | |
3727 | devm_kfree(card->dev, link_name); | |
3728 | outfree_w_param: | |
3729 | for (count = 0 ; count < num_params; count++) | |
3730 | devm_kfree(card->dev, (void *)w_param_text[count]); | |
3731 | devm_kfree(card->dev, w_param_text); | |
3732 | ||
3733 | return ret; | |
3734 | } | |
3735 | ||
3736 | int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, | |
3737 | struct snd_soc_dai *dai) | |
3738 | { | |
3739 | struct snd_soc_dapm_widget template; | |
3740 | struct snd_soc_dapm_widget *w; | |
3741 | ||
3742 | WARN_ON(dapm->dev != dai->dev); | |
3743 | ||
3744 | memset(&template, 0, sizeof(template)); | |
3745 | template.reg = SND_SOC_NOPM; | |
3746 | ||
3747 | if (dai->driver->playback.stream_name) { | |
3748 | template.id = snd_soc_dapm_dai_in; | |
3749 | template.name = dai->driver->playback.stream_name; | |
3750 | template.sname = dai->driver->playback.stream_name; | |
3751 | ||
3752 | dev_dbg(dai->dev, "ASoC: adding %s widget\n", | |
3753 | template.name); | |
3754 | ||
3755 | w = snd_soc_dapm_new_control_unlocked(dapm, &template); | |
3756 | if (!w) { | |
3757 | dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", | |
3758 | dai->driver->playback.stream_name); | |
3759 | return -ENOMEM; | |
3760 | } | |
3761 | ||
3762 | w->priv = dai; | |
3763 | dai->playback_widget = w; | |
3764 | } | |
3765 | ||
3766 | if (dai->driver->capture.stream_name) { | |
3767 | template.id = snd_soc_dapm_dai_out; | |
3768 | template.name = dai->driver->capture.stream_name; | |
3769 | template.sname = dai->driver->capture.stream_name; | |
3770 | ||
3771 | dev_dbg(dai->dev, "ASoC: adding %s widget\n", | |
3772 | template.name); | |
3773 | ||
3774 | w = snd_soc_dapm_new_control_unlocked(dapm, &template); | |
3775 | if (!w) { | |
3776 | dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", | |
3777 | dai->driver->capture.stream_name); | |
3778 | return -ENOMEM; | |
3779 | } | |
3780 | ||
3781 | w->priv = dai; | |
3782 | dai->capture_widget = w; | |
3783 | } | |
3784 | ||
3785 | return 0; | |
3786 | } | |
3787 | ||
3788 | int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) | |
3789 | { | |
3790 | struct snd_soc_dapm_widget *dai_w, *w; | |
3791 | struct snd_soc_dapm_widget *src, *sink; | |
3792 | struct snd_soc_dai *dai; | |
3793 | ||
3794 | /* For each DAI widget... */ | |
3795 | list_for_each_entry(dai_w, &card->widgets, list) { | |
3796 | switch (dai_w->id) { | |
3797 | case snd_soc_dapm_dai_in: | |
3798 | case snd_soc_dapm_dai_out: | |
3799 | break; | |
3800 | default: | |
3801 | continue; | |
3802 | } | |
3803 | ||
3804 | dai = dai_w->priv; | |
3805 | ||
3806 | /* ...find all widgets with the same stream and link them */ | |
3807 | list_for_each_entry(w, &card->widgets, list) { | |
3808 | if (w->dapm != dai_w->dapm) | |
3809 | continue; | |
3810 | ||
3811 | switch (w->id) { | |
3812 | case snd_soc_dapm_dai_in: | |
3813 | case snd_soc_dapm_dai_out: | |
3814 | continue; | |
3815 | default: | |
3816 | break; | |
3817 | } | |
3818 | ||
3819 | if (!w->sname || !strstr(w->sname, dai_w->sname)) | |
3820 | continue; | |
3821 | ||
3822 | if (dai_w->id == snd_soc_dapm_dai_in) { | |
3823 | src = dai_w; | |
3824 | sink = w; | |
3825 | } else { | |
3826 | src = w; | |
3827 | sink = dai_w; | |
3828 | } | |
3829 | dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name); | |
3830 | snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL); | |
3831 | } | |
3832 | } | |
3833 | ||
3834 | return 0; | |
3835 | } | |
3836 | ||
3837 | static void dapm_connect_dai_link_widgets(struct snd_soc_card *card, | |
3838 | struct snd_soc_pcm_runtime *rtd) | |
3839 | { | |
3840 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
3841 | struct snd_soc_dapm_widget *sink, *source; | |
3842 | int i; | |
3843 | ||
3844 | for (i = 0; i < rtd->num_codecs; i++) { | |
3845 | struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; | |
3846 | ||
3847 | /* connect BE DAI playback if widgets are valid */ | |
3848 | if (codec_dai->playback_widget && cpu_dai->playback_widget) { | |
3849 | source = cpu_dai->playback_widget; | |
3850 | sink = codec_dai->playback_widget; | |
3851 | dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", | |
3852 | cpu_dai->component->name, source->name, | |
3853 | codec_dai->component->name, sink->name); | |
3854 | ||
3855 | snd_soc_dapm_add_path(&card->dapm, source, sink, | |
3856 | NULL, NULL); | |
3857 | } | |
3858 | ||
3859 | /* connect BE DAI capture if widgets are valid */ | |
3860 | if (codec_dai->capture_widget && cpu_dai->capture_widget) { | |
3861 | source = codec_dai->capture_widget; | |
3862 | sink = cpu_dai->capture_widget; | |
3863 | dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", | |
3864 | codec_dai->component->name, source->name, | |
3865 | cpu_dai->component->name, sink->name); | |
3866 | ||
3867 | snd_soc_dapm_add_path(&card->dapm, source, sink, | |
3868 | NULL, NULL); | |
3869 | } | |
3870 | } | |
3871 | } | |
3872 | ||
3873 | static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, | |
3874 | int event) | |
3875 | { | |
3876 | struct snd_soc_dapm_widget *w; | |
3877 | unsigned int ep; | |
3878 | ||
3879 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) | |
3880 | w = dai->playback_widget; | |
3881 | else | |
3882 | w = dai->capture_widget; | |
3883 | ||
3884 | if (w) { | |
3885 | dapm_mark_dirty(w, "stream event"); | |
3886 | ||
3887 | if (w->id == snd_soc_dapm_dai_in) { | |
3888 | ep = SND_SOC_DAPM_EP_SOURCE; | |
3889 | dapm_widget_invalidate_input_paths(w); | |
3890 | } else { | |
3891 | ep = SND_SOC_DAPM_EP_SINK; | |
3892 | dapm_widget_invalidate_output_paths(w); | |
3893 | } | |
3894 | ||
3895 | switch (event) { | |
3896 | case SND_SOC_DAPM_STREAM_START: | |
3897 | w->active = 1; | |
3898 | w->is_ep = ep; | |
3899 | break; | |
3900 | case SND_SOC_DAPM_STREAM_STOP: | |
3901 | w->active = 0; | |
3902 | w->is_ep = 0; | |
3903 | break; | |
3904 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
3905 | case SND_SOC_DAPM_STREAM_RESUME: | |
3906 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: | |
3907 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: | |
3908 | break; | |
3909 | } | |
3910 | } | |
3911 | } | |
3912 | ||
3913 | void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) | |
3914 | { | |
3915 | struct snd_soc_pcm_runtime *rtd; | |
3916 | ||
3917 | /* for each BE DAI link... */ | |
3918 | list_for_each_entry(rtd, &card->rtd_list, list) { | |
3919 | /* | |
3920 | * dynamic FE links have no fixed DAI mapping. | |
3921 | * CODEC<->CODEC links have no direct connection. | |
3922 | */ | |
3923 | if (rtd->dai_link->dynamic || rtd->dai_link->params) | |
3924 | continue; | |
3925 | ||
3926 | dapm_connect_dai_link_widgets(card, rtd); | |
3927 | } | |
3928 | } | |
3929 | ||
3930 | static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, | |
3931 | int event) | |
3932 | { | |
3933 | int i; | |
3934 | ||
3935 | soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event); | |
3936 | for (i = 0; i < rtd->num_codecs; i++) | |
3937 | soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event); | |
3938 | ||
3939 | dapm_power_widgets(rtd->card, event); | |
3940 | } | |
3941 | ||
3942 | /** | |
3943 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
3944 | * @rtd: PCM runtime data | |
3945 | * @stream: stream name | |
3946 | * @event: stream event | |
3947 | * | |
3948 | * Sends a stream event to the dapm core. The core then makes any | |
3949 | * necessary widget power changes. | |
3950 | * | |
3951 | * Returns 0 for success else error. | |
3952 | */ | |
3953 | void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, | |
3954 | int event) | |
3955 | { | |
3956 | struct snd_soc_card *card = rtd->card; | |
3957 | ||
3958 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3959 | soc_dapm_stream_event(rtd, stream, event); | |
3960 | mutex_unlock(&card->dapm_mutex); | |
3961 | } | |
3962 | ||
3963 | /** | |
3964 | * snd_soc_dapm_enable_pin_unlocked - enable pin. | |
3965 | * @dapm: DAPM context | |
3966 | * @pin: pin name | |
3967 | * | |
3968 | * Enables input/output pin and its parents or children widgets iff there is | |
3969 | * a valid audio route and active audio stream. | |
3970 | * | |
3971 | * Requires external locking. | |
3972 | * | |
3973 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3974 | * do any widget power switching. | |
3975 | */ | |
3976 | int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
3977 | const char *pin) | |
3978 | { | |
3979 | return snd_soc_dapm_set_pin(dapm, pin, 1); | |
3980 | } | |
3981 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked); | |
3982 | ||
3983 | /** | |
3984 | * snd_soc_dapm_enable_pin - enable pin. | |
3985 | * @dapm: DAPM context | |
3986 | * @pin: pin name | |
3987 | * | |
3988 | * Enables input/output pin and its parents or children widgets iff there is | |
3989 | * a valid audio route and active audio stream. | |
3990 | * | |
3991 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
3992 | * do any widget power switching. | |
3993 | */ | |
3994 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) | |
3995 | { | |
3996 | int ret; | |
3997 | ||
3998 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
3999 | ||
4000 | ret = snd_soc_dapm_set_pin(dapm, pin, 1); | |
4001 | ||
4002 | mutex_unlock(&dapm->card->dapm_mutex); | |
4003 | ||
4004 | return ret; | |
4005 | } | |
4006 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
4007 | ||
4008 | /** | |
4009 | * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled | |
4010 | * @dapm: DAPM context | |
4011 | * @pin: pin name | |
4012 | * | |
4013 | * Enables input/output pin regardless of any other state. This is | |
4014 | * intended for use with microphone bias supplies used in microphone | |
4015 | * jack detection. | |
4016 | * | |
4017 | * Requires external locking. | |
4018 | * | |
4019 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
4020 | * do any widget power switching. | |
4021 | */ | |
4022 | int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
4023 | const char *pin) | |
4024 | { | |
4025 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
4026 | ||
4027 | if (!w) { | |
4028 | dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); | |
4029 | return -EINVAL; | |
4030 | } | |
4031 | ||
4032 | dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin); | |
4033 | if (!w->connected) { | |
4034 | /* | |
4035 | * w->force does not affect the number of input or output paths, | |
4036 | * so we only have to recheck if w->connected is changed | |
4037 | */ | |
4038 | dapm_widget_invalidate_input_paths(w); | |
4039 | dapm_widget_invalidate_output_paths(w); | |
4040 | w->connected = 1; | |
4041 | } | |
4042 | w->force = 1; | |
4043 | dapm_mark_dirty(w, "force enable"); | |
4044 | ||
4045 | return 0; | |
4046 | } | |
4047 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked); | |
4048 | ||
4049 | /** | |
4050 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
4051 | * @dapm: DAPM context | |
4052 | * @pin: pin name | |
4053 | * | |
4054 | * Enables input/output pin regardless of any other state. This is | |
4055 | * intended for use with microphone bias supplies used in microphone | |
4056 | * jack detection. | |
4057 | * | |
4058 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
4059 | * do any widget power switching. | |
4060 | */ | |
4061 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, | |
4062 | const char *pin) | |
4063 | { | |
4064 | int ret; | |
4065 | ||
4066 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
4067 | ||
4068 | ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin); | |
4069 | ||
4070 | mutex_unlock(&dapm->card->dapm_mutex); | |
4071 | ||
4072 | return ret; | |
4073 | } | |
4074 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
4075 | ||
4076 | /** | |
4077 | * snd_soc_dapm_disable_pin_unlocked - disable pin. | |
4078 | * @dapm: DAPM context | |
4079 | * @pin: pin name | |
4080 | * | |
4081 | * Disables input/output pin and its parents or children widgets. | |
4082 | * | |
4083 | * Requires external locking. | |
4084 | * | |
4085 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
4086 | * do any widget power switching. | |
4087 | */ | |
4088 | int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
4089 | const char *pin) | |
4090 | { | |
4091 | return snd_soc_dapm_set_pin(dapm, pin, 0); | |
4092 | } | |
4093 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked); | |
4094 | ||
4095 | /** | |
4096 | * snd_soc_dapm_disable_pin - disable pin. | |
4097 | * @dapm: DAPM context | |
4098 | * @pin: pin name | |
4099 | * | |
4100 | * Disables input/output pin and its parents or children widgets. | |
4101 | * | |
4102 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
4103 | * do any widget power switching. | |
4104 | */ | |
4105 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, | |
4106 | const char *pin) | |
4107 | { | |
4108 | int ret; | |
4109 | ||
4110 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
4111 | ||
4112 | ret = snd_soc_dapm_set_pin(dapm, pin, 0); | |
4113 | ||
4114 | mutex_unlock(&dapm->card->dapm_mutex); | |
4115 | ||
4116 | return ret; | |
4117 | } | |
4118 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); | |
4119 | ||
4120 | /** | |
4121 | * snd_soc_dapm_nc_pin_unlocked - permanently disable pin. | |
4122 | * @dapm: DAPM context | |
4123 | * @pin: pin name | |
4124 | * | |
4125 | * Marks the specified pin as being not connected, disabling it along | |
4126 | * any parent or child widgets. At present this is identical to | |
4127 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
4128 | * additional things such as disabling controls which only affect | |
4129 | * paths through the pin. | |
4130 | * | |
4131 | * Requires external locking. | |
4132 | * | |
4133 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
4134 | * do any widget power switching. | |
4135 | */ | |
4136 | int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm, | |
4137 | const char *pin) | |
4138 | { | |
4139 | return snd_soc_dapm_set_pin(dapm, pin, 0); | |
4140 | } | |
4141 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked); | |
4142 | ||
4143 | /** | |
4144 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
4145 | * @dapm: DAPM context | |
4146 | * @pin: pin name | |
4147 | * | |
4148 | * Marks the specified pin as being not connected, disabling it along | |
4149 | * any parent or child widgets. At present this is identical to | |
4150 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
4151 | * additional things such as disabling controls which only affect | |
4152 | * paths through the pin. | |
4153 | * | |
4154 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
4155 | * do any widget power switching. | |
4156 | */ | |
4157 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) | |
4158 | { | |
4159 | int ret; | |
4160 | ||
4161 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); | |
4162 | ||
4163 | ret = snd_soc_dapm_set_pin(dapm, pin, 0); | |
4164 | ||
4165 | mutex_unlock(&dapm->card->dapm_mutex); | |
4166 | ||
4167 | return ret; | |
4168 | } | |
4169 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
4170 | ||
4171 | /** | |
4172 | * snd_soc_dapm_get_pin_status - get audio pin status | |
4173 | * @dapm: DAPM context | |
4174 | * @pin: audio signal pin endpoint (or start point) | |
4175 | * | |
4176 | * Get audio pin status - connected or disconnected. | |
4177 | * | |
4178 | * Returns 1 for connected otherwise 0. | |
4179 | */ | |
4180 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, | |
4181 | const char *pin) | |
4182 | { | |
4183 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); | |
4184 | ||
4185 | if (w) | |
4186 | return w->connected; | |
4187 | ||
4188 | return 0; | |
4189 | } | |
4190 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); | |
4191 | ||
4192 | /** | |
4193 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
4194 | * @dapm: DAPM context | |
4195 | * @pin: audio signal pin endpoint (or start point) | |
4196 | * | |
4197 | * Mark the given endpoint or pin as ignoring suspend. When the | |
4198 | * system is disabled a path between two endpoints flagged as ignoring | |
4199 | * suspend will not be disabled. The path must already be enabled via | |
4200 | * normal means at suspend time, it will not be turned on if it was not | |
4201 | * already enabled. | |
4202 | */ | |
4203 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, | |
4204 | const char *pin) | |
4205 | { | |
4206 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); | |
4207 | ||
4208 | if (!w) { | |
4209 | dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); | |
4210 | return -EINVAL; | |
4211 | } | |
4212 | ||
4213 | w->ignore_suspend = 1; | |
4214 | ||
4215 | return 0; | |
4216 | } | |
4217 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
4218 | ||
4219 | /** | |
4220 | * snd_soc_dapm_free - free dapm resources | |
4221 | * @dapm: DAPM context | |
4222 | * | |
4223 | * Free all dapm widgets and resources. | |
4224 | */ | |
4225 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) | |
4226 | { | |
4227 | dapm_debugfs_cleanup(dapm); | |
4228 | dapm_free_widgets(dapm); | |
4229 | list_del(&dapm->list); | |
4230 | } | |
4231 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
4232 | ||
4233 | static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm) | |
4234 | { | |
4235 | struct snd_soc_card *card = dapm->card; | |
4236 | struct snd_soc_dapm_widget *w; | |
4237 | LIST_HEAD(down_list); | |
4238 | int powerdown = 0; | |
4239 | ||
4240 | mutex_lock(&card->dapm_mutex); | |
4241 | ||
4242 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
4243 | if (w->dapm != dapm) | |
4244 | continue; | |
4245 | if (w->power) { | |
4246 | dapm_seq_insert(w, &down_list, false); | |
4247 | w->power = 0; | |
4248 | powerdown = 1; | |
4249 | } | |
4250 | } | |
4251 | ||
4252 | /* If there were no widgets to power down we're already in | |
4253 | * standby. | |
4254 | */ | |
4255 | if (powerdown) { | |
4256 | if (dapm->bias_level == SND_SOC_BIAS_ON) | |
4257 | snd_soc_dapm_set_bias_level(dapm, | |
4258 | SND_SOC_BIAS_PREPARE); | |
4259 | dapm_seq_run(card, &down_list, 0, false); | |
4260 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) | |
4261 | snd_soc_dapm_set_bias_level(dapm, | |
4262 | SND_SOC_BIAS_STANDBY); | |
4263 | } | |
4264 | ||
4265 | mutex_unlock(&card->dapm_mutex); | |
4266 | } | |
4267 | ||
4268 | /* | |
4269 | * snd_soc_dapm_shutdown - callback for system shutdown | |
4270 | */ | |
4271 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
4272 | { | |
4273 | struct snd_soc_dapm_context *dapm; | |
4274 | ||
4275 | list_for_each_entry(dapm, &card->dapm_list, list) { | |
4276 | if (dapm != &card->dapm) { | |
4277 | soc_dapm_shutdown_dapm(dapm); | |
4278 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) | |
4279 | snd_soc_dapm_set_bias_level(dapm, | |
4280 | SND_SOC_BIAS_OFF); | |
4281 | } | |
4282 | } | |
4283 | ||
4284 | soc_dapm_shutdown_dapm(&card->dapm); | |
4285 | if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) | |
4286 | snd_soc_dapm_set_bias_level(&card->dapm, | |
4287 | SND_SOC_BIAS_OFF); | |
4288 | } | |
4289 | ||
4290 | /* Module information */ | |
4291 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); | |
4292 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); | |
4293 | MODULE_LICENSE("GPL"); |