| 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 && snd_soc_volsw_is_stereo(mc)) |
| 334 | dev_warn(widget->dapm->dev, |
| 335 | "ASoC: Unsupported stereo autodisable control '%s'\n", |
| 336 | ctrl_name); |
| 337 | |
| 338 | if (mc->autodisable) { |
| 339 | struct snd_soc_dapm_widget template; |
| 340 | |
| 341 | name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name, |
| 342 | "Autodisable"); |
| 343 | if (!name) { |
| 344 | ret = -ENOMEM; |
| 345 | goto err_data; |
| 346 | } |
| 347 | |
| 348 | memset(&template, 0, sizeof(template)); |
| 349 | template.reg = mc->reg; |
| 350 | template.mask = (1 << fls(mc->max)) - 1; |
| 351 | template.shift = mc->shift; |
| 352 | if (mc->invert) |
| 353 | template.off_val = mc->max; |
| 354 | else |
| 355 | template.off_val = 0; |
| 356 | template.on_val = template.off_val; |
| 357 | template.id = snd_soc_dapm_kcontrol; |
| 358 | template.name = name; |
| 359 | |
| 360 | data->value = template.on_val; |
| 361 | |
| 362 | data->widget = |
| 363 | snd_soc_dapm_new_control_unlocked(widget->dapm, |
| 364 | &template); |
| 365 | kfree(name); |
| 366 | if (IS_ERR(data->widget)) { |
| 367 | ret = PTR_ERR(data->widget); |
| 368 | goto err_data; |
| 369 | } |
| 370 | if (!data->widget) { |
| 371 | ret = -ENOMEM; |
| 372 | goto err_data; |
| 373 | } |
| 374 | } |
| 375 | break; |
| 376 | case snd_soc_dapm_demux: |
| 377 | case snd_soc_dapm_mux: |
| 378 | e = (struct soc_enum *)kcontrol->private_value; |
| 379 | |
| 380 | if (e->autodisable) { |
| 381 | struct snd_soc_dapm_widget template; |
| 382 | |
| 383 | name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name, |
| 384 | "Autodisable"); |
| 385 | if (!name) { |
| 386 | ret = -ENOMEM; |
| 387 | goto err_data; |
| 388 | } |
| 389 | |
| 390 | memset(&template, 0, sizeof(template)); |
| 391 | template.reg = e->reg; |
| 392 | template.mask = e->mask << e->shift_l; |
| 393 | template.shift = e->shift_l; |
| 394 | template.off_val = snd_soc_enum_item_to_val(e, 0); |
| 395 | template.on_val = template.off_val; |
| 396 | template.id = snd_soc_dapm_kcontrol; |
| 397 | template.name = name; |
| 398 | |
| 399 | data->value = template.on_val; |
| 400 | |
| 401 | data->widget = snd_soc_dapm_new_control_unlocked( |
| 402 | widget->dapm, &template); |
| 403 | kfree(name); |
| 404 | if (IS_ERR(data->widget)) { |
| 405 | ret = PTR_ERR(data->widget); |
| 406 | goto err_data; |
| 407 | } |
| 408 | if (!data->widget) { |
| 409 | ret = -ENOMEM; |
| 410 | goto err_data; |
| 411 | } |
| 412 | |
| 413 | snd_soc_dapm_add_path(widget->dapm, data->widget, |
| 414 | widget, NULL, NULL); |
| 415 | } |
| 416 | break; |
| 417 | default: |
| 418 | break; |
| 419 | } |
| 420 | |
| 421 | kcontrol->private_data = data; |
| 422 | |
| 423 | return 0; |
| 424 | |
| 425 | err_data: |
| 426 | kfree(data); |
| 427 | return ret; |
| 428 | } |
| 429 | |
| 430 | static void dapm_kcontrol_free(struct snd_kcontrol *kctl) |
| 431 | { |
| 432 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl); |
| 433 | kfree(data->wlist); |
| 434 | kfree(data); |
| 435 | } |
| 436 | |
| 437 | static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist( |
| 438 | const struct snd_kcontrol *kcontrol) |
| 439 | { |
| 440 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 441 | |
| 442 | return data->wlist; |
| 443 | } |
| 444 | |
| 445 | static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol, |
| 446 | struct snd_soc_dapm_widget *widget) |
| 447 | { |
| 448 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 449 | struct snd_soc_dapm_widget_list *new_wlist; |
| 450 | unsigned int n; |
| 451 | |
| 452 | if (data->wlist) |
| 453 | n = data->wlist->num_widgets + 1; |
| 454 | else |
| 455 | n = 1; |
| 456 | |
| 457 | new_wlist = krealloc(data->wlist, |
| 458 | sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL); |
| 459 | if (!new_wlist) |
| 460 | return -ENOMEM; |
| 461 | |
| 462 | new_wlist->widgets[n - 1] = widget; |
| 463 | new_wlist->num_widgets = n; |
| 464 | |
| 465 | data->wlist = new_wlist; |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol, |
| 471 | struct snd_soc_dapm_path *path) |
| 472 | { |
| 473 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 474 | |
| 475 | list_add_tail(&path->list_kcontrol, &data->paths); |
| 476 | } |
| 477 | |
| 478 | static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol) |
| 479 | { |
| 480 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 481 | |
| 482 | if (!data->widget) |
| 483 | return true; |
| 484 | |
| 485 | return data->widget->power; |
| 486 | } |
| 487 | |
| 488 | static struct list_head *dapm_kcontrol_get_path_list( |
| 489 | const struct snd_kcontrol *kcontrol) |
| 490 | { |
| 491 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 492 | |
| 493 | return &data->paths; |
| 494 | } |
| 495 | |
| 496 | #define dapm_kcontrol_for_each_path(path, kcontrol) \ |
| 497 | list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \ |
| 498 | list_kcontrol) |
| 499 | |
| 500 | unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol) |
| 501 | { |
| 502 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 503 | |
| 504 | return data->value; |
| 505 | } |
| 506 | EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value); |
| 507 | |
| 508 | static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol, |
| 509 | unsigned int value) |
| 510 | { |
| 511 | struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol); |
| 512 | |
| 513 | if (data->value == value) |
| 514 | return false; |
| 515 | |
| 516 | if (data->widget) |
| 517 | data->widget->on_val = value; |
| 518 | |
| 519 | data->value = value; |
| 520 | |
| 521 | return true; |
| 522 | } |
| 523 | |
| 524 | /** |
| 525 | * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a |
| 526 | * kcontrol |
| 527 | * @kcontrol: The kcontrol |
| 528 | */ |
| 529 | struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget( |
| 530 | struct snd_kcontrol *kcontrol) |
| 531 | { |
| 532 | return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]; |
| 533 | } |
| 534 | EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget); |
| 535 | |
| 536 | /** |
| 537 | * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a |
| 538 | * kcontrol |
| 539 | * @kcontrol: The kcontrol |
| 540 | * |
| 541 | * Note: This function must only be used on kcontrols that are known to have |
| 542 | * been registered for a CODEC. Otherwise the behaviour is undefined. |
| 543 | */ |
| 544 | struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm( |
| 545 | struct snd_kcontrol *kcontrol) |
| 546 | { |
| 547 | return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm; |
| 548 | } |
| 549 | EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm); |
| 550 | |
| 551 | static void dapm_reset(struct snd_soc_card *card) |
| 552 | { |
| 553 | struct snd_soc_dapm_widget *w; |
| 554 | |
| 555 | lockdep_assert_held(&card->dapm_mutex); |
| 556 | |
| 557 | memset(&card->dapm_stats, 0, sizeof(card->dapm_stats)); |
| 558 | |
| 559 | list_for_each_entry(w, &card->widgets, list) { |
| 560 | w->new_power = w->power; |
| 561 | w->power_checked = false; |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm) |
| 566 | { |
| 567 | if (!dapm->component) |
| 568 | return NULL; |
| 569 | return dapm->component->name_prefix; |
| 570 | } |
| 571 | |
| 572 | static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg, |
| 573 | unsigned int *value) |
| 574 | { |
| 575 | if (!dapm->component) |
| 576 | return -EIO; |
| 577 | return snd_soc_component_read(dapm->component, reg, value); |
| 578 | } |
| 579 | |
| 580 | static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm, |
| 581 | int reg, unsigned int mask, unsigned int value) |
| 582 | { |
| 583 | if (!dapm->component) |
| 584 | return -EIO; |
| 585 | return snd_soc_component_update_bits(dapm->component, reg, |
| 586 | mask, value); |
| 587 | } |
| 588 | |
| 589 | static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm, |
| 590 | int reg, unsigned int mask, unsigned int value) |
| 591 | { |
| 592 | if (!dapm->component) |
| 593 | return -EIO; |
| 594 | return snd_soc_component_test_bits(dapm->component, reg, mask, value); |
| 595 | } |
| 596 | |
| 597 | static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm) |
| 598 | { |
| 599 | if (dapm->component) |
| 600 | snd_soc_component_async_complete(dapm->component); |
| 601 | } |
| 602 | |
| 603 | static struct snd_soc_dapm_widget * |
| 604 | dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name) |
| 605 | { |
| 606 | struct snd_soc_dapm_widget *w = wcache->widget; |
| 607 | struct list_head *wlist; |
| 608 | const int depth = 2; |
| 609 | int i = 0; |
| 610 | |
| 611 | if (w) { |
| 612 | wlist = &w->dapm->card->widgets; |
| 613 | |
| 614 | list_for_each_entry_from(w, wlist, list) { |
| 615 | if (!strcmp(name, w->name)) |
| 616 | return w; |
| 617 | |
| 618 | if (++i == depth) |
| 619 | break; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | return NULL; |
| 624 | } |
| 625 | |
| 626 | static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache, |
| 627 | struct snd_soc_dapm_widget *w) |
| 628 | { |
| 629 | wcache->widget = w; |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level |
| 634 | * @dapm: The DAPM context for which to set the level |
| 635 | * @level: The level to set |
| 636 | * |
| 637 | * Forces the DAPM bias level to a specific state. It will call the bias level |
| 638 | * callback of DAPM context with the specified level. This will even happen if |
| 639 | * the context is already at the same level. Furthermore it will not go through |
| 640 | * the normal bias level sequencing, meaning any intermediate states between the |
| 641 | * current and the target state will not be entered. |
| 642 | * |
| 643 | * Note that the change in bias level is only temporary and the next time |
| 644 | * snd_soc_dapm_sync() is called the state will be set to the level as |
| 645 | * determined by the DAPM core. The function is mainly intended to be used to |
| 646 | * used during probe or resume from suspend to power up the device so |
| 647 | * initialization can be done, before the DAPM core takes over. |
| 648 | */ |
| 649 | int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm, |
| 650 | enum snd_soc_bias_level level) |
| 651 | { |
| 652 | int ret = 0; |
| 653 | |
| 654 | if (dapm->set_bias_level) |
| 655 | ret = dapm->set_bias_level(dapm, level); |
| 656 | |
| 657 | if (ret == 0) |
| 658 | dapm->bias_level = level; |
| 659 | |
| 660 | return ret; |
| 661 | } |
| 662 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level); |
| 663 | |
| 664 | /** |
| 665 | * snd_soc_dapm_set_bias_level - set the bias level for the system |
| 666 | * @dapm: DAPM context |
| 667 | * @level: level to configure |
| 668 | * |
| 669 | * Configure the bias (power) levels for the SoC audio device. |
| 670 | * |
| 671 | * Returns 0 for success else error. |
| 672 | */ |
| 673 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
| 674 | enum snd_soc_bias_level level) |
| 675 | { |
| 676 | struct snd_soc_card *card = dapm->card; |
| 677 | int ret = 0; |
| 678 | |
| 679 | trace_snd_soc_bias_level_start(card, level); |
| 680 | |
| 681 | if (card && card->set_bias_level) |
| 682 | ret = card->set_bias_level(card, dapm, level); |
| 683 | if (ret != 0) |
| 684 | goto out; |
| 685 | |
| 686 | if (!card || dapm != &card->dapm) |
| 687 | ret = snd_soc_dapm_force_bias_level(dapm, level); |
| 688 | |
| 689 | if (ret != 0) |
| 690 | goto out; |
| 691 | |
| 692 | if (card && card->set_bias_level_post) |
| 693 | ret = card->set_bias_level_post(card, dapm, level); |
| 694 | out: |
| 695 | trace_snd_soc_bias_level_done(card, level); |
| 696 | |
| 697 | return ret; |
| 698 | } |
| 699 | |
| 700 | /* connect mux widget to its interconnecting audio paths */ |
| 701 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
| 702 | struct snd_soc_dapm_path *path, const char *control_name, |
| 703 | struct snd_soc_dapm_widget *w) |
| 704 | { |
| 705 | const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0]; |
| 706 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 707 | unsigned int val, item; |
| 708 | int i; |
| 709 | |
| 710 | if (e->reg != SND_SOC_NOPM) { |
| 711 | soc_dapm_read(dapm, e->reg, &val); |
| 712 | val = (val >> e->shift_l) & e->mask; |
| 713 | item = snd_soc_enum_val_to_item(e, val); |
| 714 | } else { |
| 715 | /* since a virtual mux has no backing registers to |
| 716 | * decide which path to connect, it will try to match |
| 717 | * with the first enumeration. This is to ensure |
| 718 | * that the default mux choice (the first) will be |
| 719 | * correctly powered up during initialization. |
| 720 | */ |
| 721 | item = 0; |
| 722 | } |
| 723 | |
| 724 | for (i = 0; i < e->items; i++) { |
| 725 | if (!(strcmp(control_name, e->texts[i]))) { |
| 726 | path->name = e->texts[i]; |
| 727 | if (i == item) |
| 728 | path->connect = 1; |
| 729 | else |
| 730 | path->connect = 0; |
| 731 | return 0; |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | return -ENODEV; |
| 736 | } |
| 737 | |
| 738 | /* set up initial codec paths */ |
| 739 | static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i, |
| 740 | int nth_path) |
| 741 | { |
| 742 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
| 743 | p->sink->kcontrol_news[i].private_value; |
| 744 | unsigned int reg = mc->reg; |
| 745 | unsigned int shift = mc->shift; |
| 746 | unsigned int max = mc->max; |
| 747 | unsigned int mask = (1 << fls(max)) - 1; |
| 748 | unsigned int invert = mc->invert; |
| 749 | unsigned int val; |
| 750 | |
| 751 | if (reg != SND_SOC_NOPM) { |
| 752 | soc_dapm_read(p->sink->dapm, reg, &val); |
| 753 | /* |
| 754 | * The nth_path argument allows this function to know |
| 755 | * which path of a kcontrol it is setting the initial |
| 756 | * status for. Ideally this would support any number |
| 757 | * of paths and channels. But since kcontrols only come |
| 758 | * in mono and stereo variants, we are limited to 2 |
| 759 | * channels. |
| 760 | * |
| 761 | * The following code assumes for stereo controls the |
| 762 | * first path is the left channel, and all remaining |
| 763 | * paths are the right channel. |
| 764 | */ |
| 765 | if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) { |
| 766 | if (reg != mc->rreg) |
| 767 | soc_dapm_read(p->sink->dapm, mc->rreg, &val); |
| 768 | val = (val >> mc->rshift) & mask; |
| 769 | } else { |
| 770 | val = (val >> shift) & mask; |
| 771 | } |
| 772 | if (invert) |
| 773 | val = max - val; |
| 774 | p->connect = !!val; |
| 775 | } else { |
| 776 | p->connect = 0; |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | /* connect mixer widget to its interconnecting audio paths */ |
| 781 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
| 782 | struct snd_soc_dapm_path *path, const char *control_name) |
| 783 | { |
| 784 | int i, nth_path = 0; |
| 785 | |
| 786 | /* search for mixer kcontrol */ |
| 787 | for (i = 0; i < path->sink->num_kcontrols; i++) { |
| 788 | if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) { |
| 789 | path->name = path->sink->kcontrol_news[i].name; |
| 790 | dapm_set_mixer_path_status(path, i, nth_path++); |
| 791 | return 0; |
| 792 | } |
| 793 | } |
| 794 | return -ENODEV; |
| 795 | } |
| 796 | |
| 797 | static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm, |
| 798 | struct snd_soc_dapm_widget *kcontrolw, |
| 799 | const struct snd_kcontrol_new *kcontrol_new, |
| 800 | struct snd_kcontrol **kcontrol) |
| 801 | { |
| 802 | struct snd_soc_dapm_widget *w; |
| 803 | int i; |
| 804 | |
| 805 | *kcontrol = NULL; |
| 806 | |
| 807 | list_for_each_entry(w, &dapm->card->widgets, list) { |
| 808 | if (w == kcontrolw || w->dapm != kcontrolw->dapm) |
| 809 | continue; |
| 810 | for (i = 0; i < w->num_kcontrols; i++) { |
| 811 | if (&w->kcontrol_news[i] == kcontrol_new) { |
| 812 | if (w->kcontrols) |
| 813 | *kcontrol = w->kcontrols[i]; |
| 814 | return 1; |
| 815 | } |
| 816 | } |
| 817 | } |
| 818 | |
| 819 | return 0; |
| 820 | } |
| 821 | |
| 822 | /* |
| 823 | * Determine if a kcontrol is shared. If it is, look it up. If it isn't, |
| 824 | * create it. Either way, add the widget into the control's widget list |
| 825 | */ |
| 826 | static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w, |
| 827 | int kci) |
| 828 | { |
| 829 | struct snd_soc_dapm_context *dapm = w->dapm; |
| 830 | struct snd_card *card = dapm->card->snd_card; |
| 831 | const char *prefix; |
| 832 | size_t prefix_len; |
| 833 | int shared; |
| 834 | struct snd_kcontrol *kcontrol; |
| 835 | bool wname_in_long_name, kcname_in_long_name; |
| 836 | char *long_name = NULL; |
| 837 | const char *name; |
| 838 | int ret = 0; |
| 839 | |
| 840 | prefix = soc_dapm_prefix(dapm); |
| 841 | if (prefix) |
| 842 | prefix_len = strlen(prefix) + 1; |
| 843 | else |
| 844 | prefix_len = 0; |
| 845 | |
| 846 | shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci], |
| 847 | &kcontrol); |
| 848 | |
| 849 | if (!kcontrol) { |
| 850 | if (shared) { |
| 851 | wname_in_long_name = false; |
| 852 | kcname_in_long_name = true; |
| 853 | } else { |
| 854 | switch (w->id) { |
| 855 | case snd_soc_dapm_switch: |
| 856 | case snd_soc_dapm_mixer: |
| 857 | case snd_soc_dapm_pga: |
| 858 | case snd_soc_dapm_out_drv: |
| 859 | wname_in_long_name = true; |
| 860 | kcname_in_long_name = true; |
| 861 | break; |
| 862 | case snd_soc_dapm_mixer_named_ctl: |
| 863 | wname_in_long_name = false; |
| 864 | kcname_in_long_name = true; |
| 865 | break; |
| 866 | case snd_soc_dapm_demux: |
| 867 | case snd_soc_dapm_mux: |
| 868 | wname_in_long_name = true; |
| 869 | kcname_in_long_name = false; |
| 870 | break; |
| 871 | default: |
| 872 | return -EINVAL; |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | if (wname_in_long_name && kcname_in_long_name) { |
| 877 | /* |
| 878 | * The control will get a prefix from the control |
| 879 | * creation process but we're also using the same |
| 880 | * prefix for widgets so cut the prefix off the |
| 881 | * front of the widget name. |
| 882 | */ |
| 883 | long_name = kasprintf(GFP_KERNEL, "%s %s", |
| 884 | w->name + prefix_len, |
| 885 | w->kcontrol_news[kci].name); |
| 886 | if (long_name == NULL) |
| 887 | return -ENOMEM; |
| 888 | |
| 889 | name = long_name; |
| 890 | } else if (wname_in_long_name) { |
| 891 | long_name = NULL; |
| 892 | name = w->name + prefix_len; |
| 893 | } else { |
| 894 | long_name = NULL; |
| 895 | name = w->kcontrol_news[kci].name; |
| 896 | } |
| 897 | |
| 898 | kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name, |
| 899 | prefix); |
| 900 | if (!kcontrol) { |
| 901 | ret = -ENOMEM; |
| 902 | goto exit_free; |
| 903 | } |
| 904 | |
| 905 | kcontrol->private_free = dapm_kcontrol_free; |
| 906 | |
| 907 | ret = dapm_kcontrol_data_alloc(w, kcontrol, name); |
| 908 | if (ret) { |
| 909 | snd_ctl_free_one(kcontrol); |
| 910 | goto exit_free; |
| 911 | } |
| 912 | |
| 913 | ret = snd_ctl_add(card, kcontrol); |
| 914 | if (ret < 0) { |
| 915 | dev_err(dapm->dev, |
| 916 | "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", |
| 917 | w->name, name, ret); |
| 918 | goto exit_free; |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | ret = dapm_kcontrol_add_widget(kcontrol, w); |
| 923 | if (ret == 0) |
| 924 | w->kcontrols[kci] = kcontrol; |
| 925 | |
| 926 | exit_free: |
| 927 | kfree(long_name); |
| 928 | |
| 929 | return ret; |
| 930 | } |
| 931 | |
| 932 | /* create new dapm mixer control */ |
| 933 | static int dapm_new_mixer(struct snd_soc_dapm_widget *w) |
| 934 | { |
| 935 | int i, ret; |
| 936 | struct snd_soc_dapm_path *path; |
| 937 | struct dapm_kcontrol_data *data; |
| 938 | |
| 939 | /* add kcontrol */ |
| 940 | for (i = 0; i < w->num_kcontrols; i++) { |
| 941 | /* match name */ |
| 942 | snd_soc_dapm_widget_for_each_source_path(w, path) { |
| 943 | /* mixer/mux paths name must match control name */ |
| 944 | if (path->name != (char *)w->kcontrol_news[i].name) |
| 945 | continue; |
| 946 | |
| 947 | if (!w->kcontrols[i]) { |
| 948 | ret = dapm_create_or_share_kcontrol(w, i); |
| 949 | if (ret < 0) |
| 950 | return ret; |
| 951 | } |
| 952 | |
| 953 | dapm_kcontrol_add_path(w->kcontrols[i], path); |
| 954 | |
| 955 | data = snd_kcontrol_chip(w->kcontrols[i]); |
| 956 | if (data->widget) |
| 957 | snd_soc_dapm_add_path(data->widget->dapm, |
| 958 | data->widget, |
| 959 | path->source, |
| 960 | NULL, NULL); |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | return 0; |
| 965 | } |
| 966 | |
| 967 | /* create new dapm mux control */ |
| 968 | static int dapm_new_mux(struct snd_soc_dapm_widget *w) |
| 969 | { |
| 970 | struct snd_soc_dapm_context *dapm = w->dapm; |
| 971 | enum snd_soc_dapm_direction dir; |
| 972 | struct snd_soc_dapm_path *path; |
| 973 | const char *type; |
| 974 | int ret; |
| 975 | |
| 976 | switch (w->id) { |
| 977 | case snd_soc_dapm_mux: |
| 978 | dir = SND_SOC_DAPM_DIR_OUT; |
| 979 | type = "mux"; |
| 980 | break; |
| 981 | case snd_soc_dapm_demux: |
| 982 | dir = SND_SOC_DAPM_DIR_IN; |
| 983 | type = "demux"; |
| 984 | break; |
| 985 | default: |
| 986 | return -EINVAL; |
| 987 | } |
| 988 | |
| 989 | if (w->num_kcontrols != 1) { |
| 990 | dev_err(dapm->dev, |
| 991 | "ASoC: %s %s has incorrect number of controls\n", type, |
| 992 | w->name); |
| 993 | return -EINVAL; |
| 994 | } |
| 995 | |
| 996 | if (list_empty(&w->edges[dir])) { |
| 997 | dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name); |
| 998 | return -EINVAL; |
| 999 | } |
| 1000 | |
| 1001 | ret = dapm_create_or_share_kcontrol(w, 0); |
| 1002 | if (ret < 0) |
| 1003 | return ret; |
| 1004 | |
| 1005 | snd_soc_dapm_widget_for_each_path(w, dir, path) { |
| 1006 | if (path->name) |
| 1007 | dapm_kcontrol_add_path(w->kcontrols[0], path); |
| 1008 | } |
| 1009 | |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
| 1013 | /* create new dapm volume control */ |
| 1014 | static int dapm_new_pga(struct snd_soc_dapm_widget *w) |
| 1015 | { |
| 1016 | int i, ret; |
| 1017 | |
| 1018 | for (i = 0; i < w->num_kcontrols; i++) { |
| 1019 | ret = dapm_create_or_share_kcontrol(w, i); |
| 1020 | if (ret < 0) |
| 1021 | return ret; |
| 1022 | } |
| 1023 | |
| 1024 | return 0; |
| 1025 | } |
| 1026 | |
| 1027 | /* create new dapm dai link control */ |
| 1028 | static int dapm_new_dai_link(struct snd_soc_dapm_widget *w) |
| 1029 | { |
| 1030 | int i, ret; |
| 1031 | struct snd_kcontrol *kcontrol; |
| 1032 | struct snd_soc_dapm_context *dapm = w->dapm; |
| 1033 | struct snd_card *card = dapm->card->snd_card; |
| 1034 | |
| 1035 | /* create control for links with > 1 config */ |
| 1036 | if (w->num_params <= 1) |
| 1037 | return 0; |
| 1038 | |
| 1039 | /* add kcontrol */ |
| 1040 | for (i = 0; i < w->num_kcontrols; i++) { |
| 1041 | kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w, |
| 1042 | w->name, NULL); |
| 1043 | ret = snd_ctl_add(card, kcontrol); |
| 1044 | if (ret < 0) { |
| 1045 | dev_err(dapm->dev, |
| 1046 | "ASoC: failed to add widget %s dapm kcontrol %s: %d\n", |
| 1047 | w->name, w->kcontrol_news[i].name, ret); |
| 1048 | return ret; |
| 1049 | } |
| 1050 | kcontrol->private_data = w; |
| 1051 | w->kcontrols[i] = kcontrol; |
| 1052 | } |
| 1053 | |
| 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | /* We implement power down on suspend by checking the power state of |
| 1058 | * the ALSA card - when we are suspending the ALSA state for the card |
| 1059 | * is set to D3. |
| 1060 | */ |
| 1061 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) |
| 1062 | { |
| 1063 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
| 1064 | |
| 1065 | switch (level) { |
| 1066 | case SNDRV_CTL_POWER_D3hot: |
| 1067 | case SNDRV_CTL_POWER_D3cold: |
| 1068 | if (widget->ignore_suspend) |
| 1069 | dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n", |
| 1070 | widget->name); |
| 1071 | return widget->ignore_suspend; |
| 1072 | default: |
| 1073 | return 1; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list, |
| 1078 | struct list_head *widgets) |
| 1079 | { |
| 1080 | struct snd_soc_dapm_widget *w; |
| 1081 | struct list_head *it; |
| 1082 | unsigned int size = 0; |
| 1083 | unsigned int i = 0; |
| 1084 | |
| 1085 | list_for_each(it, widgets) |
| 1086 | size++; |
| 1087 | |
| 1088 | *list = kzalloc(sizeof(**list) + size * sizeof(*w), GFP_KERNEL); |
| 1089 | if (*list == NULL) |
| 1090 | return -ENOMEM; |
| 1091 | |
| 1092 | list_for_each_entry(w, widgets, work_list) |
| 1093 | (*list)->widgets[i++] = w; |
| 1094 | |
| 1095 | (*list)->num_widgets = i; |
| 1096 | |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
| 1100 | /* |
| 1101 | * Common implementation for is_connected_output_ep() and |
| 1102 | * is_connected_input_ep(). The function is inlined since the combined size of |
| 1103 | * the two specialized functions is only marginally larger then the size of the |
| 1104 | * generic function and at the same time the fast path of the specialized |
| 1105 | * functions is significantly smaller than the generic function. |
| 1106 | */ |
| 1107 | static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget, |
| 1108 | struct list_head *list, enum snd_soc_dapm_direction dir, |
| 1109 | int (*fn)(struct snd_soc_dapm_widget *, struct list_head *, |
| 1110 | bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, |
| 1111 | enum snd_soc_dapm_direction)), |
| 1112 | bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, |
| 1113 | enum snd_soc_dapm_direction)) |
| 1114 | { |
| 1115 | enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir); |
| 1116 | struct snd_soc_dapm_path *path; |
| 1117 | int con = 0; |
| 1118 | |
| 1119 | if (widget->endpoints[dir] >= 0) |
| 1120 | return widget->endpoints[dir]; |
| 1121 | |
| 1122 | DAPM_UPDATE_STAT(widget, path_checks); |
| 1123 | |
| 1124 | /* do we need to add this widget to the list ? */ |
| 1125 | if (list) |
| 1126 | list_add_tail(&widget->work_list, list); |
| 1127 | |
| 1128 | if (custom_stop_condition && custom_stop_condition(widget, dir)) { |
| 1129 | widget->endpoints[dir] = 1; |
| 1130 | return widget->endpoints[dir]; |
| 1131 | } |
| 1132 | |
| 1133 | if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) { |
| 1134 | widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget); |
| 1135 | return widget->endpoints[dir]; |
| 1136 | } |
| 1137 | |
| 1138 | snd_soc_dapm_widget_for_each_path(widget, rdir, path) { |
| 1139 | DAPM_UPDATE_STAT(widget, neighbour_checks); |
| 1140 | |
| 1141 | if (path->weak || path->is_supply) |
| 1142 | continue; |
| 1143 | |
| 1144 | if (path->walking) |
| 1145 | return 1; |
| 1146 | |
| 1147 | trace_snd_soc_dapm_path(widget, dir, path); |
| 1148 | |
| 1149 | if (path->connect) { |
| 1150 | path->walking = 1; |
| 1151 | con += fn(path->node[dir], list, custom_stop_condition); |
| 1152 | path->walking = 0; |
| 1153 | } |
| 1154 | } |
| 1155 | |
| 1156 | widget->endpoints[dir] = con; |
| 1157 | |
| 1158 | return con; |
| 1159 | } |
| 1160 | |
| 1161 | /* |
| 1162 | * Recursively check for a completed path to an active or physically connected |
| 1163 | * output widget. Returns number of complete paths. |
| 1164 | * |
| 1165 | * Optionally, can be supplied with a function acting as a stopping condition. |
| 1166 | * This function takes the dapm widget currently being examined and the walk |
| 1167 | * direction as an arguments, it should return true if the walk should be |
| 1168 | * stopped and false otherwise. |
| 1169 | */ |
| 1170 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget, |
| 1171 | struct list_head *list, |
| 1172 | bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i, |
| 1173 | enum snd_soc_dapm_direction)) |
| 1174 | { |
| 1175 | return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT, |
| 1176 | is_connected_output_ep, custom_stop_condition); |
| 1177 | } |
| 1178 | |
| 1179 | /* |
| 1180 | * Recursively check for a completed path to an active or physically connected |
| 1181 | * input widget. Returns number of complete paths. |
| 1182 | * |
| 1183 | * Optionally, can be supplied with a function acting as a stopping condition. |
| 1184 | * This function takes the dapm widget currently being examined and the walk |
| 1185 | * direction as an arguments, it should return true if the walk should be |
| 1186 | * stopped and false otherwise. |
| 1187 | */ |
| 1188 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget, |
| 1189 | struct list_head *list, |
| 1190 | bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i, |
| 1191 | enum snd_soc_dapm_direction)) |
| 1192 | { |
| 1193 | return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN, |
| 1194 | is_connected_input_ep, custom_stop_condition); |
| 1195 | } |
| 1196 | |
| 1197 | /** |
| 1198 | * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets. |
| 1199 | * @dai: the soc DAI. |
| 1200 | * @stream: stream direction. |
| 1201 | * @list: list of active widgets for this stream. |
| 1202 | * @custom_stop_condition: (optional) a function meant to stop the widget graph |
| 1203 | * walk based on custom logic. |
| 1204 | * |
| 1205 | * Queries DAPM graph as to whether a valid audio stream path exists for |
| 1206 | * the initial stream specified by name. This takes into account |
| 1207 | * current mixer and mux kcontrol settings. Creates list of valid widgets. |
| 1208 | * |
| 1209 | * Optionally, can be supplied with a function acting as a stopping condition. |
| 1210 | * This function takes the dapm widget currently being examined and the walk |
| 1211 | * direction as an arguments, it should return true if the walk should be |
| 1212 | * stopped and false otherwise. |
| 1213 | * |
| 1214 | * Returns the number of valid paths or negative error. |
| 1215 | */ |
| 1216 | int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream, |
| 1217 | struct snd_soc_dapm_widget_list **list, |
| 1218 | bool (*custom_stop_condition)(struct snd_soc_dapm_widget *, |
| 1219 | enum snd_soc_dapm_direction)) |
| 1220 | { |
| 1221 | struct snd_soc_card *card = dai->component->card; |
| 1222 | struct snd_soc_dapm_widget *w; |
| 1223 | LIST_HEAD(widgets); |
| 1224 | int paths; |
| 1225 | int ret; |
| 1226 | |
| 1227 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 1228 | |
| 1229 | /* |
| 1230 | * For is_connected_{output,input}_ep fully discover the graph we need |
| 1231 | * to reset the cached number of inputs and outputs. |
| 1232 | */ |
| 1233 | list_for_each_entry(w, &card->widgets, list) { |
| 1234 | w->endpoints[SND_SOC_DAPM_DIR_IN] = -1; |
| 1235 | w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1; |
| 1236 | } |
| 1237 | |
| 1238 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1239 | paths = is_connected_output_ep(dai->playback_widget, &widgets, |
| 1240 | custom_stop_condition); |
| 1241 | else |
| 1242 | paths = is_connected_input_ep(dai->capture_widget, &widgets, |
| 1243 | custom_stop_condition); |
| 1244 | |
| 1245 | /* Drop starting point */ |
| 1246 | list_del(widgets.next); |
| 1247 | |
| 1248 | ret = dapm_widget_list_create(list, &widgets); |
| 1249 | if (ret) |
| 1250 | paths = ret; |
| 1251 | |
| 1252 | trace_snd_soc_dapm_connected(paths, stream); |
| 1253 | mutex_unlock(&card->dapm_mutex); |
| 1254 | |
| 1255 | return paths; |
| 1256 | } |
| 1257 | |
| 1258 | /* |
| 1259 | * Handler for regulator supply widget. |
| 1260 | */ |
| 1261 | int dapm_regulator_event(struct snd_soc_dapm_widget *w, |
| 1262 | struct snd_kcontrol *kcontrol, int event) |
| 1263 | { |
| 1264 | int ret; |
| 1265 | |
| 1266 | soc_dapm_async_complete(w->dapm); |
| 1267 | |
| 1268 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
| 1269 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { |
| 1270 | ret = regulator_allow_bypass(w->regulator, false); |
| 1271 | if (ret != 0) |
| 1272 | dev_warn(w->dapm->dev, |
| 1273 | "ASoC: Failed to unbypass %s: %d\n", |
| 1274 | w->name, ret); |
| 1275 | } |
| 1276 | |
| 1277 | return regulator_enable(w->regulator); |
| 1278 | } else { |
| 1279 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { |
| 1280 | ret = regulator_allow_bypass(w->regulator, true); |
| 1281 | if (ret != 0) |
| 1282 | dev_warn(w->dapm->dev, |
| 1283 | "ASoC: Failed to bypass %s: %d\n", |
| 1284 | w->name, ret); |
| 1285 | } |
| 1286 | |
| 1287 | return regulator_disable_deferred(w->regulator, w->shift); |
| 1288 | } |
| 1289 | } |
| 1290 | EXPORT_SYMBOL_GPL(dapm_regulator_event); |
| 1291 | |
| 1292 | /* |
| 1293 | * Handler for clock supply widget. |
| 1294 | */ |
| 1295 | int dapm_clock_event(struct snd_soc_dapm_widget *w, |
| 1296 | struct snd_kcontrol *kcontrol, int event) |
| 1297 | { |
| 1298 | if (!w->clk) |
| 1299 | return -EIO; |
| 1300 | |
| 1301 | soc_dapm_async_complete(w->dapm); |
| 1302 | |
| 1303 | #ifdef CONFIG_HAVE_CLK |
| 1304 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
| 1305 | return clk_prepare_enable(w->clk); |
| 1306 | } else { |
| 1307 | clk_disable_unprepare(w->clk); |
| 1308 | return 0; |
| 1309 | } |
| 1310 | #endif |
| 1311 | return 0; |
| 1312 | } |
| 1313 | EXPORT_SYMBOL_GPL(dapm_clock_event); |
| 1314 | |
| 1315 | static int dapm_widget_power_check(struct snd_soc_dapm_widget *w) |
| 1316 | { |
| 1317 | if (w->power_checked) |
| 1318 | return w->new_power; |
| 1319 | |
| 1320 | if (w->force) |
| 1321 | w->new_power = 1; |
| 1322 | else |
| 1323 | w->new_power = w->power_check(w); |
| 1324 | |
| 1325 | w->power_checked = true; |
| 1326 | |
| 1327 | return w->new_power; |
| 1328 | } |
| 1329 | |
| 1330 | /* Generic check to see if a widget should be powered. */ |
| 1331 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) |
| 1332 | { |
| 1333 | int in, out; |
| 1334 | |
| 1335 | DAPM_UPDATE_STAT(w, power_checks); |
| 1336 | |
| 1337 | in = is_connected_input_ep(w, NULL, NULL); |
| 1338 | out = is_connected_output_ep(w, NULL, NULL); |
| 1339 | return out != 0 && in != 0; |
| 1340 | } |
| 1341 | |
| 1342 | /* Check to see if a power supply is needed */ |
| 1343 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) |
| 1344 | { |
| 1345 | struct snd_soc_dapm_path *path; |
| 1346 | |
| 1347 | DAPM_UPDATE_STAT(w, power_checks); |
| 1348 | |
| 1349 | /* Check if one of our outputs is connected */ |
| 1350 | snd_soc_dapm_widget_for_each_sink_path(w, path) { |
| 1351 | DAPM_UPDATE_STAT(w, neighbour_checks); |
| 1352 | |
| 1353 | if (path->weak) |
| 1354 | continue; |
| 1355 | |
| 1356 | if (path->connected && |
| 1357 | !path->connected(path->source, path->sink)) |
| 1358 | continue; |
| 1359 | |
| 1360 | if (dapm_widget_power_check(path->sink)) |
| 1361 | return 1; |
| 1362 | } |
| 1363 | |
| 1364 | return 0; |
| 1365 | } |
| 1366 | |
| 1367 | static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w) |
| 1368 | { |
| 1369 | return w->connected; |
| 1370 | } |
| 1371 | |
| 1372 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
| 1373 | struct snd_soc_dapm_widget *b, |
| 1374 | bool power_up) |
| 1375 | { |
| 1376 | int *sort; |
| 1377 | |
| 1378 | if (power_up) |
| 1379 | sort = dapm_up_seq; |
| 1380 | else |
| 1381 | sort = dapm_down_seq; |
| 1382 | |
| 1383 | if (sort[a->id] != sort[b->id]) |
| 1384 | return sort[a->id] - sort[b->id]; |
| 1385 | if (a->subseq != b->subseq) { |
| 1386 | if (power_up) |
| 1387 | return a->subseq - b->subseq; |
| 1388 | else |
| 1389 | return b->subseq - a->subseq; |
| 1390 | } |
| 1391 | if (a->reg != b->reg) |
| 1392 | return a->reg - b->reg; |
| 1393 | if (a->dapm != b->dapm) |
| 1394 | return (unsigned long)a->dapm - (unsigned long)b->dapm; |
| 1395 | |
| 1396 | return 0; |
| 1397 | } |
| 1398 | |
| 1399 | /* Insert a widget in order into a DAPM power sequence. */ |
| 1400 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, |
| 1401 | struct list_head *list, |
| 1402 | bool power_up) |
| 1403 | { |
| 1404 | struct snd_soc_dapm_widget *w; |
| 1405 | |
| 1406 | list_for_each_entry(w, list, power_list) |
| 1407 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
| 1408 | list_add_tail(&new_widget->power_list, &w->power_list); |
| 1409 | return; |
| 1410 | } |
| 1411 | |
| 1412 | list_add_tail(&new_widget->power_list, list); |
| 1413 | } |
| 1414 | |
| 1415 | static void dapm_seq_check_event(struct snd_soc_card *card, |
| 1416 | struct snd_soc_dapm_widget *w, int event) |
| 1417 | { |
| 1418 | const char *ev_name; |
| 1419 | int power, ret; |
| 1420 | |
| 1421 | switch (event) { |
| 1422 | case SND_SOC_DAPM_PRE_PMU: |
| 1423 | ev_name = "PRE_PMU"; |
| 1424 | power = 1; |
| 1425 | break; |
| 1426 | case SND_SOC_DAPM_POST_PMU: |
| 1427 | ev_name = "POST_PMU"; |
| 1428 | power = 1; |
| 1429 | break; |
| 1430 | case SND_SOC_DAPM_PRE_PMD: |
| 1431 | ev_name = "PRE_PMD"; |
| 1432 | power = 0; |
| 1433 | break; |
| 1434 | case SND_SOC_DAPM_POST_PMD: |
| 1435 | ev_name = "POST_PMD"; |
| 1436 | power = 0; |
| 1437 | break; |
| 1438 | case SND_SOC_DAPM_WILL_PMU: |
| 1439 | ev_name = "WILL_PMU"; |
| 1440 | power = 1; |
| 1441 | break; |
| 1442 | case SND_SOC_DAPM_WILL_PMD: |
| 1443 | ev_name = "WILL_PMD"; |
| 1444 | power = 0; |
| 1445 | break; |
| 1446 | default: |
| 1447 | WARN(1, "Unknown event %d\n", event); |
| 1448 | return; |
| 1449 | } |
| 1450 | |
| 1451 | if (w->new_power != power) |
| 1452 | return; |
| 1453 | |
| 1454 | if (w->event && (w->event_flags & event)) { |
| 1455 | pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n", |
| 1456 | w->name, ev_name); |
| 1457 | soc_dapm_async_complete(w->dapm); |
| 1458 | trace_snd_soc_dapm_widget_event_start(w, event); |
| 1459 | ret = w->event(w, NULL, event); |
| 1460 | trace_snd_soc_dapm_widget_event_done(w, event); |
| 1461 | if (ret < 0) |
| 1462 | dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n", |
| 1463 | ev_name, w->name, ret); |
| 1464 | } |
| 1465 | } |
| 1466 | |
| 1467 | /* Apply the coalesced changes from a DAPM sequence */ |
| 1468 | static void dapm_seq_run_coalesced(struct snd_soc_card *card, |
| 1469 | struct list_head *pending) |
| 1470 | { |
| 1471 | struct snd_soc_dapm_context *dapm; |
| 1472 | struct snd_soc_dapm_widget *w; |
| 1473 | int reg; |
| 1474 | unsigned int value = 0; |
| 1475 | unsigned int mask = 0; |
| 1476 | |
| 1477 | w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list); |
| 1478 | reg = w->reg; |
| 1479 | dapm = w->dapm; |
| 1480 | |
| 1481 | list_for_each_entry(w, pending, power_list) { |
| 1482 | WARN_ON(reg != w->reg || dapm != w->dapm); |
| 1483 | w->power = w->new_power; |
| 1484 | |
| 1485 | mask |= w->mask << w->shift; |
| 1486 | if (w->power) |
| 1487 | value |= w->on_val << w->shift; |
| 1488 | else |
| 1489 | value |= w->off_val << w->shift; |
| 1490 | |
| 1491 | pop_dbg(dapm->dev, card->pop_time, |
| 1492 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
| 1493 | w->name, reg, value, mask); |
| 1494 | |
| 1495 | /* Check for events */ |
| 1496 | dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU); |
| 1497 | dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD); |
| 1498 | } |
| 1499 | |
| 1500 | if (reg >= 0) { |
| 1501 | /* Any widget will do, they should all be updating the |
| 1502 | * same register. |
| 1503 | */ |
| 1504 | |
| 1505 | pop_dbg(dapm->dev, card->pop_time, |
| 1506 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
| 1507 | value, mask, reg, card->pop_time); |
| 1508 | pop_wait(card->pop_time); |
| 1509 | soc_dapm_update_bits(dapm, reg, mask, value); |
| 1510 | } |
| 1511 | |
| 1512 | list_for_each_entry(w, pending, power_list) { |
| 1513 | dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU); |
| 1514 | dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD); |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | /* Apply a DAPM power sequence. |
| 1519 | * |
| 1520 | * We walk over a pre-sorted list of widgets to apply power to. In |
| 1521 | * order to minimise the number of writes to the device required |
| 1522 | * multiple widgets will be updated in a single write where possible. |
| 1523 | * Currently anything that requires more than a single write is not |
| 1524 | * handled. |
| 1525 | */ |
| 1526 | static void dapm_seq_run(struct snd_soc_card *card, |
| 1527 | struct list_head *list, int event, bool power_up) |
| 1528 | { |
| 1529 | struct snd_soc_dapm_widget *w, *n; |
| 1530 | struct snd_soc_dapm_context *d; |
| 1531 | LIST_HEAD(pending); |
| 1532 | int cur_sort = -1; |
| 1533 | int cur_subseq = -1; |
| 1534 | int cur_reg = SND_SOC_NOPM; |
| 1535 | struct snd_soc_dapm_context *cur_dapm = NULL; |
| 1536 | int ret, i; |
| 1537 | int *sort; |
| 1538 | |
| 1539 | if (power_up) |
| 1540 | sort = dapm_up_seq; |
| 1541 | else |
| 1542 | sort = dapm_down_seq; |
| 1543 | |
| 1544 | list_for_each_entry_safe(w, n, list, power_list) { |
| 1545 | ret = 0; |
| 1546 | |
| 1547 | /* Do we need to apply any queued changes? */ |
| 1548 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
| 1549 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
| 1550 | if (!list_empty(&pending)) |
| 1551 | dapm_seq_run_coalesced(card, &pending); |
| 1552 | |
| 1553 | if (cur_dapm && cur_dapm->seq_notifier) { |
| 1554 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) |
| 1555 | if (sort[i] == cur_sort) |
| 1556 | cur_dapm->seq_notifier(cur_dapm, |
| 1557 | i, |
| 1558 | cur_subseq); |
| 1559 | } |
| 1560 | |
| 1561 | if (cur_dapm && w->dapm != cur_dapm) |
| 1562 | soc_dapm_async_complete(cur_dapm); |
| 1563 | |
| 1564 | INIT_LIST_HEAD(&pending); |
| 1565 | cur_sort = -1; |
| 1566 | cur_subseq = INT_MIN; |
| 1567 | cur_reg = SND_SOC_NOPM; |
| 1568 | cur_dapm = NULL; |
| 1569 | } |
| 1570 | |
| 1571 | switch (w->id) { |
| 1572 | case snd_soc_dapm_pre: |
| 1573 | if (!w->event) |
| 1574 | list_for_each_entry_safe_continue(w, n, list, |
| 1575 | power_list); |
| 1576 | |
| 1577 | if (event == SND_SOC_DAPM_STREAM_START) |
| 1578 | ret = w->event(w, |
| 1579 | NULL, SND_SOC_DAPM_PRE_PMU); |
| 1580 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
| 1581 | ret = w->event(w, |
| 1582 | NULL, SND_SOC_DAPM_PRE_PMD); |
| 1583 | break; |
| 1584 | |
| 1585 | case snd_soc_dapm_post: |
| 1586 | if (!w->event) |
| 1587 | list_for_each_entry_safe_continue(w, n, list, |
| 1588 | power_list); |
| 1589 | |
| 1590 | if (event == SND_SOC_DAPM_STREAM_START) |
| 1591 | ret = w->event(w, |
| 1592 | NULL, SND_SOC_DAPM_POST_PMU); |
| 1593 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
| 1594 | ret = w->event(w, |
| 1595 | NULL, SND_SOC_DAPM_POST_PMD); |
| 1596 | break; |
| 1597 | |
| 1598 | default: |
| 1599 | /* Queue it up for application */ |
| 1600 | cur_sort = sort[w->id]; |
| 1601 | cur_subseq = w->subseq; |
| 1602 | cur_reg = w->reg; |
| 1603 | cur_dapm = w->dapm; |
| 1604 | list_move(&w->power_list, &pending); |
| 1605 | break; |
| 1606 | } |
| 1607 | |
| 1608 | if (ret < 0) |
| 1609 | dev_err(w->dapm->dev, |
| 1610 | "ASoC: Failed to apply widget power: %d\n", ret); |
| 1611 | } |
| 1612 | |
| 1613 | if (!list_empty(&pending)) |
| 1614 | dapm_seq_run_coalesced(card, &pending); |
| 1615 | |
| 1616 | if (cur_dapm && cur_dapm->seq_notifier) { |
| 1617 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) |
| 1618 | if (sort[i] == cur_sort) |
| 1619 | cur_dapm->seq_notifier(cur_dapm, |
| 1620 | i, cur_subseq); |
| 1621 | } |
| 1622 | |
| 1623 | list_for_each_entry(d, &card->dapm_list, list) { |
| 1624 | soc_dapm_async_complete(d); |
| 1625 | } |
| 1626 | } |
| 1627 | |
| 1628 | static void dapm_widget_update(struct snd_soc_card *card) |
| 1629 | { |
| 1630 | struct snd_soc_dapm_update *update = card->update; |
| 1631 | struct snd_soc_dapm_widget_list *wlist; |
| 1632 | struct snd_soc_dapm_widget *w = NULL; |
| 1633 | unsigned int wi; |
| 1634 | int ret; |
| 1635 | |
| 1636 | if (!update || !dapm_kcontrol_is_powered(update->kcontrol)) |
| 1637 | return; |
| 1638 | |
| 1639 | wlist = dapm_kcontrol_get_wlist(update->kcontrol); |
| 1640 | |
| 1641 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
| 1642 | w = wlist->widgets[wi]; |
| 1643 | |
| 1644 | if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) { |
| 1645 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); |
| 1646 | if (ret != 0) |
| 1647 | dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n", |
| 1648 | w->name, ret); |
| 1649 | } |
| 1650 | } |
| 1651 | |
| 1652 | if (!w) |
| 1653 | return; |
| 1654 | |
| 1655 | ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask, |
| 1656 | update->val); |
| 1657 | if (ret < 0) |
| 1658 | dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n", |
| 1659 | w->name, ret); |
| 1660 | |
| 1661 | if (update->has_second_set) { |
| 1662 | ret = soc_dapm_update_bits(w->dapm, update->reg2, |
| 1663 | update->mask2, update->val2); |
| 1664 | if (ret < 0) |
| 1665 | dev_err(w->dapm->dev, |
| 1666 | "ASoC: %s DAPM update failed: %d\n", |
| 1667 | w->name, ret); |
| 1668 | } |
| 1669 | |
| 1670 | for (wi = 0; wi < wlist->num_widgets; wi++) { |
| 1671 | w = wlist->widgets[wi]; |
| 1672 | |
| 1673 | if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) { |
| 1674 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); |
| 1675 | if (ret != 0) |
| 1676 | dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n", |
| 1677 | w->name, ret); |
| 1678 | } |
| 1679 | } |
| 1680 | } |
| 1681 | |
| 1682 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
| 1683 | * they're changing state. |
| 1684 | */ |
| 1685 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) |
| 1686 | { |
| 1687 | struct snd_soc_dapm_context *d = data; |
| 1688 | int ret; |
| 1689 | |
| 1690 | /* If we're off and we're not supposed to go into STANDBY */ |
| 1691 | if (d->bias_level == SND_SOC_BIAS_OFF && |
| 1692 | d->target_bias_level != SND_SOC_BIAS_OFF) { |
| 1693 | if (d->dev) |
| 1694 | pm_runtime_get_sync(d->dev); |
| 1695 | |
| 1696 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
| 1697 | if (ret != 0) |
| 1698 | dev_err(d->dev, |
| 1699 | "ASoC: Failed to turn on bias: %d\n", ret); |
| 1700 | } |
| 1701 | |
| 1702 | /* Prepare for a transition to ON or away from ON */ |
| 1703 | if ((d->target_bias_level == SND_SOC_BIAS_ON && |
| 1704 | d->bias_level != SND_SOC_BIAS_ON) || |
| 1705 | (d->target_bias_level != SND_SOC_BIAS_ON && |
| 1706 | d->bias_level == SND_SOC_BIAS_ON)) { |
| 1707 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); |
| 1708 | if (ret != 0) |
| 1709 | dev_err(d->dev, |
| 1710 | "ASoC: Failed to prepare bias: %d\n", ret); |
| 1711 | } |
| 1712 | } |
| 1713 | |
| 1714 | /* Async callback run prior to DAPM sequences - brings to their final |
| 1715 | * state. |
| 1716 | */ |
| 1717 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) |
| 1718 | { |
| 1719 | struct snd_soc_dapm_context *d = data; |
| 1720 | int ret; |
| 1721 | |
| 1722 | /* If we just powered the last thing off drop to standby bias */ |
| 1723 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
| 1724 | (d->target_bias_level == SND_SOC_BIAS_STANDBY || |
| 1725 | d->target_bias_level == SND_SOC_BIAS_OFF)) { |
| 1726 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); |
| 1727 | if (ret != 0) |
| 1728 | dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n", |
| 1729 | ret); |
| 1730 | } |
| 1731 | |
| 1732 | /* If we're in standby and can support bias off then do that */ |
| 1733 | if (d->bias_level == SND_SOC_BIAS_STANDBY && |
| 1734 | d->target_bias_level == SND_SOC_BIAS_OFF) { |
| 1735 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); |
| 1736 | if (ret != 0) |
| 1737 | dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n", |
| 1738 | ret); |
| 1739 | |
| 1740 | if (d->dev) |
| 1741 | pm_runtime_put(d->dev); |
| 1742 | } |
| 1743 | |
| 1744 | /* If we just powered up then move to active bias */ |
| 1745 | if (d->bias_level == SND_SOC_BIAS_PREPARE && |
| 1746 | d->target_bias_level == SND_SOC_BIAS_ON) { |
| 1747 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); |
| 1748 | if (ret != 0) |
| 1749 | dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n", |
| 1750 | ret); |
| 1751 | } |
| 1752 | } |
| 1753 | |
| 1754 | static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer, |
| 1755 | bool power, bool connect) |
| 1756 | { |
| 1757 | /* If a connection is being made or broken then that update |
| 1758 | * will have marked the peer dirty, otherwise the widgets are |
| 1759 | * not connected and this update has no impact. */ |
| 1760 | if (!connect) |
| 1761 | return; |
| 1762 | |
| 1763 | /* If the peer is already in the state we're moving to then we |
| 1764 | * won't have an impact on it. */ |
| 1765 | if (power != peer->power) |
| 1766 | dapm_mark_dirty(peer, "peer state change"); |
| 1767 | } |
| 1768 | |
| 1769 | static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, |
| 1770 | struct list_head *up_list, |
| 1771 | struct list_head *down_list) |
| 1772 | { |
| 1773 | struct snd_soc_dapm_path *path; |
| 1774 | |
| 1775 | if (w->power == power) |
| 1776 | return; |
| 1777 | |
| 1778 | trace_snd_soc_dapm_widget_power(w, power); |
| 1779 | |
| 1780 | /* If we changed our power state perhaps our neigbours changed |
| 1781 | * also. |
| 1782 | */ |
| 1783 | snd_soc_dapm_widget_for_each_source_path(w, path) |
| 1784 | dapm_widget_set_peer_power(path->source, power, path->connect); |
| 1785 | |
| 1786 | /* Supplies can't affect their outputs, only their inputs */ |
| 1787 | if (!w->is_supply) { |
| 1788 | snd_soc_dapm_widget_for_each_sink_path(w, path) |
| 1789 | dapm_widget_set_peer_power(path->sink, power, |
| 1790 | path->connect); |
| 1791 | } |
| 1792 | |
| 1793 | if (power) |
| 1794 | dapm_seq_insert(w, up_list, true); |
| 1795 | else |
| 1796 | dapm_seq_insert(w, down_list, false); |
| 1797 | } |
| 1798 | |
| 1799 | static void dapm_power_one_widget(struct snd_soc_dapm_widget *w, |
| 1800 | struct list_head *up_list, |
| 1801 | struct list_head *down_list) |
| 1802 | { |
| 1803 | int power; |
| 1804 | |
| 1805 | switch (w->id) { |
| 1806 | case snd_soc_dapm_pre: |
| 1807 | dapm_seq_insert(w, down_list, false); |
| 1808 | break; |
| 1809 | case snd_soc_dapm_post: |
| 1810 | dapm_seq_insert(w, up_list, true); |
| 1811 | break; |
| 1812 | |
| 1813 | default: |
| 1814 | power = dapm_widget_power_check(w); |
| 1815 | |
| 1816 | dapm_widget_set_power(w, power, up_list, down_list); |
| 1817 | break; |
| 1818 | } |
| 1819 | } |
| 1820 | |
| 1821 | static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm) |
| 1822 | { |
| 1823 | if (dapm->idle_bias_off) |
| 1824 | return true; |
| 1825 | |
| 1826 | switch (snd_power_get_state(dapm->card->snd_card)) { |
| 1827 | case SNDRV_CTL_POWER_D3hot: |
| 1828 | case SNDRV_CTL_POWER_D3cold: |
| 1829 | return dapm->suspend_bias_off; |
| 1830 | default: |
| 1831 | break; |
| 1832 | } |
| 1833 | |
| 1834 | return false; |
| 1835 | } |
| 1836 | |
| 1837 | /* |
| 1838 | * Scan each dapm widget for complete audio path. |
| 1839 | * A complete path is a route that has valid endpoints i.e.:- |
| 1840 | * |
| 1841 | * o DAC to output pin. |
| 1842 | * o Input pin to ADC. |
| 1843 | * o Input pin to Output pin (bypass, sidetone) |
| 1844 | * o DAC to ADC (loopback). |
| 1845 | */ |
| 1846 | static int dapm_power_widgets(struct snd_soc_card *card, int event) |
| 1847 | { |
| 1848 | struct snd_soc_dapm_widget *w; |
| 1849 | struct snd_soc_dapm_context *d; |
| 1850 | LIST_HEAD(up_list); |
| 1851 | LIST_HEAD(down_list); |
| 1852 | ASYNC_DOMAIN_EXCLUSIVE(async_domain); |
| 1853 | enum snd_soc_bias_level bias; |
| 1854 | |
| 1855 | lockdep_assert_held(&card->dapm_mutex); |
| 1856 | |
| 1857 | trace_snd_soc_dapm_start(card); |
| 1858 | |
| 1859 | list_for_each_entry(d, &card->dapm_list, list) { |
| 1860 | if (dapm_idle_bias_off(d)) |
| 1861 | d->target_bias_level = SND_SOC_BIAS_OFF; |
| 1862 | else |
| 1863 | d->target_bias_level = SND_SOC_BIAS_STANDBY; |
| 1864 | } |
| 1865 | |
| 1866 | dapm_reset(card); |
| 1867 | |
| 1868 | /* Check which widgets we need to power and store them in |
| 1869 | * lists indicating if they should be powered up or down. We |
| 1870 | * only check widgets that have been flagged as dirty but note |
| 1871 | * that new widgets may be added to the dirty list while we |
| 1872 | * iterate. |
| 1873 | */ |
| 1874 | list_for_each_entry(w, &card->dapm_dirty, dirty) { |
| 1875 | dapm_power_one_widget(w, &up_list, &down_list); |
| 1876 | } |
| 1877 | |
| 1878 | list_for_each_entry(w, &card->widgets, list) { |
| 1879 | switch (w->id) { |
| 1880 | case snd_soc_dapm_pre: |
| 1881 | case snd_soc_dapm_post: |
| 1882 | /* These widgets always need to be powered */ |
| 1883 | break; |
| 1884 | default: |
| 1885 | list_del_init(&w->dirty); |
| 1886 | break; |
| 1887 | } |
| 1888 | |
| 1889 | if (w->new_power) { |
| 1890 | d = w->dapm; |
| 1891 | |
| 1892 | /* Supplies and micbiases only bring the |
| 1893 | * context up to STANDBY as unless something |
| 1894 | * else is active and passing audio they |
| 1895 | * generally don't require full power. Signal |
| 1896 | * generators are virtual pins and have no |
| 1897 | * power impact themselves. |
| 1898 | */ |
| 1899 | switch (w->id) { |
| 1900 | case snd_soc_dapm_siggen: |
| 1901 | case snd_soc_dapm_vmid: |
| 1902 | break; |
| 1903 | case snd_soc_dapm_supply: |
| 1904 | case snd_soc_dapm_regulator_supply: |
| 1905 | case snd_soc_dapm_clock_supply: |
| 1906 | case snd_soc_dapm_micbias: |
| 1907 | if (d->target_bias_level < SND_SOC_BIAS_STANDBY) |
| 1908 | d->target_bias_level = SND_SOC_BIAS_STANDBY; |
| 1909 | break; |
| 1910 | default: |
| 1911 | d->target_bias_level = SND_SOC_BIAS_ON; |
| 1912 | break; |
| 1913 | } |
| 1914 | } |
| 1915 | |
| 1916 | } |
| 1917 | |
| 1918 | /* Force all contexts in the card to the same bias state if |
| 1919 | * they're not ground referenced. |
| 1920 | */ |
| 1921 | bias = SND_SOC_BIAS_OFF; |
| 1922 | list_for_each_entry(d, &card->dapm_list, list) |
| 1923 | if (d->target_bias_level > bias) |
| 1924 | bias = d->target_bias_level; |
| 1925 | list_for_each_entry(d, &card->dapm_list, list) |
| 1926 | if (!dapm_idle_bias_off(d)) |
| 1927 | d->target_bias_level = bias; |
| 1928 | |
| 1929 | trace_snd_soc_dapm_walk_done(card); |
| 1930 | |
| 1931 | /* Run card bias changes at first */ |
| 1932 | dapm_pre_sequence_async(&card->dapm, 0); |
| 1933 | /* Run other bias changes in parallel */ |
| 1934 | list_for_each_entry(d, &card->dapm_list, list) { |
| 1935 | if (d != &card->dapm) |
| 1936 | async_schedule_domain(dapm_pre_sequence_async, d, |
| 1937 | &async_domain); |
| 1938 | } |
| 1939 | async_synchronize_full_domain(&async_domain); |
| 1940 | |
| 1941 | list_for_each_entry(w, &down_list, power_list) { |
| 1942 | dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD); |
| 1943 | } |
| 1944 | |
| 1945 | list_for_each_entry(w, &up_list, power_list) { |
| 1946 | dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU); |
| 1947 | } |
| 1948 | |
| 1949 | /* Power down widgets first; try to avoid amplifying pops. */ |
| 1950 | dapm_seq_run(card, &down_list, event, false); |
| 1951 | |
| 1952 | dapm_widget_update(card); |
| 1953 | |
| 1954 | /* Now power up. */ |
| 1955 | dapm_seq_run(card, &up_list, event, true); |
| 1956 | |
| 1957 | /* Run all the bias changes in parallel */ |
| 1958 | list_for_each_entry(d, &card->dapm_list, list) { |
| 1959 | if (d != &card->dapm) |
| 1960 | async_schedule_domain(dapm_post_sequence_async, d, |
| 1961 | &async_domain); |
| 1962 | } |
| 1963 | async_synchronize_full_domain(&async_domain); |
| 1964 | /* Run card bias changes at last */ |
| 1965 | dapm_post_sequence_async(&card->dapm, 0); |
| 1966 | |
| 1967 | /* do we need to notify any clients that DAPM event is complete */ |
| 1968 | list_for_each_entry(d, &card->dapm_list, list) { |
| 1969 | if (d->stream_event) |
| 1970 | d->stream_event(d, event); |
| 1971 | } |
| 1972 | |
| 1973 | pop_dbg(card->dev, card->pop_time, |
| 1974 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); |
| 1975 | pop_wait(card->pop_time); |
| 1976 | |
| 1977 | trace_snd_soc_dapm_done(card); |
| 1978 | |
| 1979 | return 0; |
| 1980 | } |
| 1981 | |
| 1982 | #ifdef CONFIG_DEBUG_FS |
| 1983 | static ssize_t dapm_widget_power_read_file(struct file *file, |
| 1984 | char __user *user_buf, |
| 1985 | size_t count, loff_t *ppos) |
| 1986 | { |
| 1987 | struct snd_soc_dapm_widget *w = file->private_data; |
| 1988 | struct snd_soc_card *card = w->dapm->card; |
| 1989 | enum snd_soc_dapm_direction dir, rdir; |
| 1990 | char *buf; |
| 1991 | int in, out; |
| 1992 | ssize_t ret; |
| 1993 | struct snd_soc_dapm_path *p = NULL; |
| 1994 | |
| 1995 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 1996 | if (!buf) |
| 1997 | return -ENOMEM; |
| 1998 | |
| 1999 | mutex_lock(&card->dapm_mutex); |
| 2000 | |
| 2001 | /* Supply widgets are not handled by is_connected_{input,output}_ep() */ |
| 2002 | if (w->is_supply) { |
| 2003 | in = 0; |
| 2004 | out = 0; |
| 2005 | } else { |
| 2006 | in = is_connected_input_ep(w, NULL, NULL); |
| 2007 | out = is_connected_output_ep(w, NULL, NULL); |
| 2008 | } |
| 2009 | |
| 2010 | ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d", |
| 2011 | w->name, w->power ? "On" : "Off", |
| 2012 | w->force ? " (forced)" : "", in, out); |
| 2013 | |
| 2014 | if (w->reg >= 0) |
| 2015 | ret += snprintf(buf + ret, PAGE_SIZE - ret, |
| 2016 | " - R%d(0x%x) mask 0x%x", |
| 2017 | w->reg, w->reg, w->mask << w->shift); |
| 2018 | |
| 2019 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); |
| 2020 | |
| 2021 | if (w->sname) |
| 2022 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", |
| 2023 | w->sname, |
| 2024 | w->active ? "active" : "inactive"); |
| 2025 | |
| 2026 | snd_soc_dapm_for_each_direction(dir) { |
| 2027 | rdir = SND_SOC_DAPM_DIR_REVERSE(dir); |
| 2028 | snd_soc_dapm_widget_for_each_path(w, dir, p) { |
| 2029 | if (p->connected && !p->connected(w, p->node[rdir])) |
| 2030 | continue; |
| 2031 | |
| 2032 | if (!p->connect) |
| 2033 | continue; |
| 2034 | |
| 2035 | ret += snprintf(buf + ret, PAGE_SIZE - ret, |
| 2036 | " %s \"%s\" \"%s\"\n", |
| 2037 | (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out", |
| 2038 | p->name ? p->name : "static", |
| 2039 | p->node[rdir]->name); |
| 2040 | } |
| 2041 | } |
| 2042 | |
| 2043 | mutex_unlock(&card->dapm_mutex); |
| 2044 | |
| 2045 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 2046 | |
| 2047 | kfree(buf); |
| 2048 | return ret; |
| 2049 | } |
| 2050 | |
| 2051 | static const struct file_operations dapm_widget_power_fops = { |
| 2052 | .open = simple_open, |
| 2053 | .read = dapm_widget_power_read_file, |
| 2054 | .llseek = default_llseek, |
| 2055 | }; |
| 2056 | |
| 2057 | static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf, |
| 2058 | size_t count, loff_t *ppos) |
| 2059 | { |
| 2060 | struct snd_soc_dapm_context *dapm = file->private_data; |
| 2061 | char *level; |
| 2062 | |
| 2063 | switch (dapm->bias_level) { |
| 2064 | case SND_SOC_BIAS_ON: |
| 2065 | level = "On\n"; |
| 2066 | break; |
| 2067 | case SND_SOC_BIAS_PREPARE: |
| 2068 | level = "Prepare\n"; |
| 2069 | break; |
| 2070 | case SND_SOC_BIAS_STANDBY: |
| 2071 | level = "Standby\n"; |
| 2072 | break; |
| 2073 | case SND_SOC_BIAS_OFF: |
| 2074 | level = "Off\n"; |
| 2075 | break; |
| 2076 | default: |
| 2077 | WARN(1, "Unknown bias_level %d\n", dapm->bias_level); |
| 2078 | level = "Unknown\n"; |
| 2079 | break; |
| 2080 | } |
| 2081 | |
| 2082 | return simple_read_from_buffer(user_buf, count, ppos, level, |
| 2083 | strlen(level)); |
| 2084 | } |
| 2085 | |
| 2086 | static const struct file_operations dapm_bias_fops = { |
| 2087 | .open = simple_open, |
| 2088 | .read = dapm_bias_read_file, |
| 2089 | .llseek = default_llseek, |
| 2090 | }; |
| 2091 | |
| 2092 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
| 2093 | struct dentry *parent) |
| 2094 | { |
| 2095 | struct dentry *d; |
| 2096 | |
| 2097 | if (!parent) |
| 2098 | return; |
| 2099 | |
| 2100 | dapm->debugfs_dapm = debugfs_create_dir("dapm", parent); |
| 2101 | |
| 2102 | if (!dapm->debugfs_dapm) { |
| 2103 | dev_warn(dapm->dev, |
| 2104 | "ASoC: Failed to create DAPM debugfs directory\n"); |
| 2105 | return; |
| 2106 | } |
| 2107 | |
| 2108 | d = debugfs_create_file("bias_level", 0444, |
| 2109 | dapm->debugfs_dapm, dapm, |
| 2110 | &dapm_bias_fops); |
| 2111 | if (!d) |
| 2112 | dev_warn(dapm->dev, |
| 2113 | "ASoC: Failed to create bias level debugfs file\n"); |
| 2114 | } |
| 2115 | |
| 2116 | static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
| 2117 | { |
| 2118 | struct snd_soc_dapm_context *dapm = w->dapm; |
| 2119 | struct dentry *d; |
| 2120 | |
| 2121 | if (!dapm->debugfs_dapm || !w->name) |
| 2122 | return; |
| 2123 | |
| 2124 | d = debugfs_create_file(w->name, 0444, |
| 2125 | dapm->debugfs_dapm, w, |
| 2126 | &dapm_widget_power_fops); |
| 2127 | if (!d) |
| 2128 | dev_warn(w->dapm->dev, |
| 2129 | "ASoC: Failed to create %s debugfs file\n", |
| 2130 | w->name); |
| 2131 | } |
| 2132 | |
| 2133 | static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
| 2134 | { |
| 2135 | debugfs_remove_recursive(dapm->debugfs_dapm); |
| 2136 | } |
| 2137 | |
| 2138 | #else |
| 2139 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm, |
| 2140 | struct dentry *parent) |
| 2141 | { |
| 2142 | } |
| 2143 | |
| 2144 | static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) |
| 2145 | { |
| 2146 | } |
| 2147 | |
| 2148 | static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) |
| 2149 | { |
| 2150 | } |
| 2151 | |
| 2152 | #endif |
| 2153 | |
| 2154 | /* |
| 2155 | * soc_dapm_connect_path() - Connects or disconnects a path |
| 2156 | * @path: The path to update |
| 2157 | * @connect: The new connect state of the path. True if the path is connected, |
| 2158 | * false if it is disconnected. |
| 2159 | * @reason: The reason why the path changed (for debugging only) |
| 2160 | */ |
| 2161 | static void soc_dapm_connect_path(struct snd_soc_dapm_path *path, |
| 2162 | bool connect, const char *reason) |
| 2163 | { |
| 2164 | if (path->connect == connect) |
| 2165 | return; |
| 2166 | |
| 2167 | path->connect = connect; |
| 2168 | dapm_mark_dirty(path->source, reason); |
| 2169 | dapm_mark_dirty(path->sink, reason); |
| 2170 | dapm_path_invalidate(path); |
| 2171 | } |
| 2172 | |
| 2173 | /* test and update the power status of a mux widget */ |
| 2174 | static int soc_dapm_mux_update_power(struct snd_soc_card *card, |
| 2175 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e) |
| 2176 | { |
| 2177 | struct snd_soc_dapm_path *path; |
| 2178 | int found = 0; |
| 2179 | bool connect; |
| 2180 | |
| 2181 | lockdep_assert_held(&card->dapm_mutex); |
| 2182 | |
| 2183 | /* find dapm widget path assoc with kcontrol */ |
| 2184 | dapm_kcontrol_for_each_path(path, kcontrol) { |
| 2185 | found = 1; |
| 2186 | /* we now need to match the string in the enum to the path */ |
| 2187 | if (!(strcmp(path->name, e->texts[mux]))) |
| 2188 | connect = true; |
| 2189 | else |
| 2190 | connect = false; |
| 2191 | |
| 2192 | soc_dapm_connect_path(path, connect, "mux update"); |
| 2193 | } |
| 2194 | |
| 2195 | if (found) |
| 2196 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); |
| 2197 | |
| 2198 | return found; |
| 2199 | } |
| 2200 | |
| 2201 | int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm, |
| 2202 | struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e, |
| 2203 | struct snd_soc_dapm_update *update) |
| 2204 | { |
| 2205 | struct snd_soc_card *card = dapm->card; |
| 2206 | int ret; |
| 2207 | |
| 2208 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 2209 | card->update = update; |
| 2210 | ret = soc_dapm_mux_update_power(card, kcontrol, mux, e); |
| 2211 | card->update = NULL; |
| 2212 | mutex_unlock(&card->dapm_mutex); |
| 2213 | if (ret > 0) |
| 2214 | soc_dpcm_runtime_update(card); |
| 2215 | return ret; |
| 2216 | } |
| 2217 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power); |
| 2218 | |
| 2219 | /* test and update the power status of a mixer or switch widget */ |
| 2220 | static int soc_dapm_mixer_update_power(struct snd_soc_card *card, |
| 2221 | struct snd_kcontrol *kcontrol, |
| 2222 | int connect, int rconnect) |
| 2223 | { |
| 2224 | struct snd_soc_dapm_path *path; |
| 2225 | int found = 0; |
| 2226 | |
| 2227 | lockdep_assert_held(&card->dapm_mutex); |
| 2228 | |
| 2229 | /* find dapm widget path assoc with kcontrol */ |
| 2230 | dapm_kcontrol_for_each_path(path, kcontrol) { |
| 2231 | /* |
| 2232 | * Ideally this function should support any number of |
| 2233 | * paths and channels. But since kcontrols only come |
| 2234 | * in mono and stereo variants, we are limited to 2 |
| 2235 | * channels. |
| 2236 | * |
| 2237 | * The following code assumes for stereo controls the |
| 2238 | * first path (when 'found == 0') is the left channel, |
| 2239 | * and all remaining paths (when 'found == 1') are the |
| 2240 | * right channel. |
| 2241 | * |
| 2242 | * A stereo control is signified by a valid 'rconnect' |
| 2243 | * value, either 0 for unconnected, or >= 0 for connected. |
| 2244 | * This is chosen instead of using snd_soc_volsw_is_stereo, |
| 2245 | * so that the behavior of snd_soc_dapm_mixer_update_power |
| 2246 | * doesn't change even when the kcontrol passed in is |
| 2247 | * stereo. |
| 2248 | * |
| 2249 | * It passes 'connect' as the path connect status for |
| 2250 | * the left channel, and 'rconnect' for the right |
| 2251 | * channel. |
| 2252 | */ |
| 2253 | if (found && rconnect >= 0) |
| 2254 | soc_dapm_connect_path(path, rconnect, "mixer update"); |
| 2255 | else |
| 2256 | soc_dapm_connect_path(path, connect, "mixer update"); |
| 2257 | found = 1; |
| 2258 | } |
| 2259 | |
| 2260 | if (found) |
| 2261 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); |
| 2262 | |
| 2263 | return found; |
| 2264 | } |
| 2265 | |
| 2266 | int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm, |
| 2267 | struct snd_kcontrol *kcontrol, int connect, |
| 2268 | struct snd_soc_dapm_update *update) |
| 2269 | { |
| 2270 | struct snd_soc_card *card = dapm->card; |
| 2271 | int ret; |
| 2272 | |
| 2273 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 2274 | card->update = update; |
| 2275 | ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1); |
| 2276 | card->update = NULL; |
| 2277 | mutex_unlock(&card->dapm_mutex); |
| 2278 | if (ret > 0) |
| 2279 | soc_dpcm_runtime_update(card); |
| 2280 | return ret; |
| 2281 | } |
| 2282 | EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power); |
| 2283 | |
| 2284 | static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt, |
| 2285 | char *buf) |
| 2286 | { |
| 2287 | struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt); |
| 2288 | struct snd_soc_dapm_widget *w; |
| 2289 | int count = 0; |
| 2290 | char *state = "not set"; |
| 2291 | |
| 2292 | /* card won't be set for the dummy component, as a spot fix |
| 2293 | * we're checking for that case specifically here but in future |
| 2294 | * we will ensure that the dummy component looks like others. |
| 2295 | */ |
| 2296 | if (!cmpnt->card) |
| 2297 | return 0; |
| 2298 | |
| 2299 | list_for_each_entry(w, &cmpnt->card->widgets, list) { |
| 2300 | if (w->dapm != dapm) |
| 2301 | continue; |
| 2302 | |
| 2303 | /* only display widgets that burn power */ |
| 2304 | switch (w->id) { |
| 2305 | case snd_soc_dapm_hp: |
| 2306 | case snd_soc_dapm_mic: |
| 2307 | case snd_soc_dapm_spk: |
| 2308 | case snd_soc_dapm_line: |
| 2309 | case snd_soc_dapm_micbias: |
| 2310 | case snd_soc_dapm_dac: |
| 2311 | case snd_soc_dapm_adc: |
| 2312 | case snd_soc_dapm_pga: |
| 2313 | case snd_soc_dapm_out_drv: |
| 2314 | case snd_soc_dapm_mixer: |
| 2315 | case snd_soc_dapm_mixer_named_ctl: |
| 2316 | case snd_soc_dapm_supply: |
| 2317 | case snd_soc_dapm_regulator_supply: |
| 2318 | case snd_soc_dapm_clock_supply: |
| 2319 | if (w->name) |
| 2320 | count += sprintf(buf + count, "%s: %s\n", |
| 2321 | w->name, w->power ? "On":"Off"); |
| 2322 | break; |
| 2323 | default: |
| 2324 | break; |
| 2325 | } |
| 2326 | } |
| 2327 | |
| 2328 | switch (snd_soc_dapm_get_bias_level(dapm)) { |
| 2329 | case SND_SOC_BIAS_ON: |
| 2330 | state = "On"; |
| 2331 | break; |
| 2332 | case SND_SOC_BIAS_PREPARE: |
| 2333 | state = "Prepare"; |
| 2334 | break; |
| 2335 | case SND_SOC_BIAS_STANDBY: |
| 2336 | state = "Standby"; |
| 2337 | break; |
| 2338 | case SND_SOC_BIAS_OFF: |
| 2339 | state = "Off"; |
| 2340 | break; |
| 2341 | } |
| 2342 | count += sprintf(buf + count, "PM State: %s\n", state); |
| 2343 | |
| 2344 | return count; |
| 2345 | } |
| 2346 | |
| 2347 | /* show dapm widget status in sys fs */ |
| 2348 | static ssize_t dapm_widget_show(struct device *dev, |
| 2349 | struct device_attribute *attr, char *buf) |
| 2350 | { |
| 2351 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 2352 | int i, count = 0; |
| 2353 | |
| 2354 | mutex_lock(&rtd->card->dapm_mutex); |
| 2355 | |
| 2356 | for (i = 0; i < rtd->num_codecs; i++) { |
| 2357 | struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component; |
| 2358 | |
| 2359 | count += dapm_widget_show_component(cmpnt, buf + count); |
| 2360 | } |
| 2361 | |
| 2362 | mutex_unlock(&rtd->card->dapm_mutex); |
| 2363 | |
| 2364 | return count; |
| 2365 | } |
| 2366 | |
| 2367 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); |
| 2368 | |
| 2369 | struct attribute *soc_dapm_dev_attrs[] = { |
| 2370 | &dev_attr_dapm_widget.attr, |
| 2371 | NULL |
| 2372 | }; |
| 2373 | |
| 2374 | static void dapm_free_path(struct snd_soc_dapm_path *path) |
| 2375 | { |
| 2376 | list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]); |
| 2377 | list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]); |
| 2378 | list_del(&path->list_kcontrol); |
| 2379 | list_del(&path->list); |
| 2380 | kfree(path); |
| 2381 | } |
| 2382 | |
| 2383 | void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w) |
| 2384 | { |
| 2385 | struct snd_soc_dapm_path *p, *next_p; |
| 2386 | enum snd_soc_dapm_direction dir; |
| 2387 | |
| 2388 | list_del(&w->list); |
| 2389 | /* |
| 2390 | * remove source and sink paths associated to this widget. |
| 2391 | * While removing the path, remove reference to it from both |
| 2392 | * source and sink widgets so that path is removed only once. |
| 2393 | */ |
| 2394 | snd_soc_dapm_for_each_direction(dir) { |
| 2395 | snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p) |
| 2396 | dapm_free_path(p); |
| 2397 | } |
| 2398 | |
| 2399 | kfree(w->kcontrols); |
| 2400 | kfree_const(w->name); |
| 2401 | kfree(w); |
| 2402 | } |
| 2403 | |
| 2404 | void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm) |
| 2405 | { |
| 2406 | dapm->path_sink_cache.widget = NULL; |
| 2407 | dapm->path_source_cache.widget = NULL; |
| 2408 | } |
| 2409 | |
| 2410 | /* free all dapm widgets and resources */ |
| 2411 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
| 2412 | { |
| 2413 | struct snd_soc_dapm_widget *w, *next_w; |
| 2414 | |
| 2415 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
| 2416 | if (w->dapm != dapm) |
| 2417 | continue; |
| 2418 | snd_soc_dapm_free_widget(w); |
| 2419 | } |
| 2420 | snd_soc_dapm_reset_cache(dapm); |
| 2421 | } |
| 2422 | |
| 2423 | static struct snd_soc_dapm_widget *dapm_find_widget( |
| 2424 | struct snd_soc_dapm_context *dapm, const char *pin, |
| 2425 | bool search_other_contexts) |
| 2426 | { |
| 2427 | struct snd_soc_dapm_widget *w; |
| 2428 | struct snd_soc_dapm_widget *fallback = NULL; |
| 2429 | |
| 2430 | list_for_each_entry(w, &dapm->card->widgets, list) { |
| 2431 | if (!strcmp(w->name, pin)) { |
| 2432 | if (w->dapm == dapm) |
| 2433 | return w; |
| 2434 | else |
| 2435 | fallback = w; |
| 2436 | } |
| 2437 | } |
| 2438 | |
| 2439 | if (search_other_contexts) |
| 2440 | return fallback; |
| 2441 | |
| 2442 | return NULL; |
| 2443 | } |
| 2444 | |
| 2445 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, |
| 2446 | const char *pin, int status) |
| 2447 | { |
| 2448 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
| 2449 | |
| 2450 | dapm_assert_locked(dapm); |
| 2451 | |
| 2452 | if (!w) { |
| 2453 | dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin); |
| 2454 | return -EINVAL; |
| 2455 | } |
| 2456 | |
| 2457 | if (w->connected != status) { |
| 2458 | dapm_mark_dirty(w, "pin configuration"); |
| 2459 | dapm_widget_invalidate_input_paths(w); |
| 2460 | dapm_widget_invalidate_output_paths(w); |
| 2461 | } |
| 2462 | |
| 2463 | w->connected = status; |
| 2464 | if (status == 0) |
| 2465 | w->force = 0; |
| 2466 | |
| 2467 | return 0; |
| 2468 | } |
| 2469 | |
| 2470 | /** |
| 2471 | * snd_soc_dapm_sync_unlocked - scan and power dapm paths |
| 2472 | * @dapm: DAPM context |
| 2473 | * |
| 2474 | * Walks all dapm audio paths and powers widgets according to their |
| 2475 | * stream or path usage. |
| 2476 | * |
| 2477 | * Requires external locking. |
| 2478 | * |
| 2479 | * Returns 0 for success. |
| 2480 | */ |
| 2481 | int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm) |
| 2482 | { |
| 2483 | /* |
| 2484 | * Suppress early reports (eg, jacks syncing their state) to avoid |
| 2485 | * silly DAPM runs during card startup. |
| 2486 | */ |
| 2487 | if (!dapm->card || !dapm->card->instantiated) |
| 2488 | return 0; |
| 2489 | |
| 2490 | return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP); |
| 2491 | } |
| 2492 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked); |
| 2493 | |
| 2494 | /** |
| 2495 | * snd_soc_dapm_sync - scan and power dapm paths |
| 2496 | * @dapm: DAPM context |
| 2497 | * |
| 2498 | * Walks all dapm audio paths and powers widgets according to their |
| 2499 | * stream or path usage. |
| 2500 | * |
| 2501 | * Returns 0 for success. |
| 2502 | */ |
| 2503 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
| 2504 | { |
| 2505 | int ret; |
| 2506 | |
| 2507 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 2508 | ret = snd_soc_dapm_sync_unlocked(dapm); |
| 2509 | mutex_unlock(&dapm->card->dapm_mutex); |
| 2510 | return ret; |
| 2511 | } |
| 2512 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
| 2513 | |
| 2514 | /* |
| 2515 | * dapm_update_widget_flags() - Re-compute widget sink and source flags |
| 2516 | * @w: The widget for which to update the flags |
| 2517 | * |
| 2518 | * Some widgets have a dynamic category which depends on which neighbors they |
| 2519 | * are connected to. This function update the category for these widgets. |
| 2520 | * |
| 2521 | * This function must be called whenever a path is added or removed to a widget. |
| 2522 | */ |
| 2523 | static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w) |
| 2524 | { |
| 2525 | enum snd_soc_dapm_direction dir; |
| 2526 | struct snd_soc_dapm_path *p; |
| 2527 | unsigned int ep; |
| 2528 | |
| 2529 | switch (w->id) { |
| 2530 | case snd_soc_dapm_input: |
| 2531 | /* On a fully routed card an input is never a source */ |
| 2532 | if (w->dapm->card->fully_routed) |
| 2533 | return; |
| 2534 | ep = SND_SOC_DAPM_EP_SOURCE; |
| 2535 | snd_soc_dapm_widget_for_each_source_path(w, p) { |
| 2536 | if (p->source->id == snd_soc_dapm_micbias || |
| 2537 | p->source->id == snd_soc_dapm_mic || |
| 2538 | p->source->id == snd_soc_dapm_line || |
| 2539 | p->source->id == snd_soc_dapm_output) { |
| 2540 | ep = 0; |
| 2541 | break; |
| 2542 | } |
| 2543 | } |
| 2544 | break; |
| 2545 | case snd_soc_dapm_output: |
| 2546 | /* On a fully routed card a output is never a sink */ |
| 2547 | if (w->dapm->card->fully_routed) |
| 2548 | return; |
| 2549 | ep = SND_SOC_DAPM_EP_SINK; |
| 2550 | snd_soc_dapm_widget_for_each_sink_path(w, p) { |
| 2551 | if (p->sink->id == snd_soc_dapm_spk || |
| 2552 | p->sink->id == snd_soc_dapm_hp || |
| 2553 | p->sink->id == snd_soc_dapm_line || |
| 2554 | p->sink->id == snd_soc_dapm_input) { |
| 2555 | ep = 0; |
| 2556 | break; |
| 2557 | } |
| 2558 | } |
| 2559 | break; |
| 2560 | case snd_soc_dapm_line: |
| 2561 | ep = 0; |
| 2562 | snd_soc_dapm_for_each_direction(dir) { |
| 2563 | if (!list_empty(&w->edges[dir])) |
| 2564 | ep |= SND_SOC_DAPM_DIR_TO_EP(dir); |
| 2565 | } |
| 2566 | break; |
| 2567 | default: |
| 2568 | return; |
| 2569 | } |
| 2570 | |
| 2571 | w->is_ep = ep; |
| 2572 | } |
| 2573 | |
| 2574 | static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm, |
| 2575 | struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink, |
| 2576 | const char *control) |
| 2577 | { |
| 2578 | bool dynamic_source = false; |
| 2579 | bool dynamic_sink = false; |
| 2580 | |
| 2581 | if (!control) |
| 2582 | return 0; |
| 2583 | |
| 2584 | switch (source->id) { |
| 2585 | case snd_soc_dapm_demux: |
| 2586 | dynamic_source = true; |
| 2587 | break; |
| 2588 | default: |
| 2589 | break; |
| 2590 | } |
| 2591 | |
| 2592 | switch (sink->id) { |
| 2593 | case snd_soc_dapm_mux: |
| 2594 | case snd_soc_dapm_switch: |
| 2595 | case snd_soc_dapm_mixer: |
| 2596 | case snd_soc_dapm_mixer_named_ctl: |
| 2597 | dynamic_sink = true; |
| 2598 | break; |
| 2599 | default: |
| 2600 | break; |
| 2601 | } |
| 2602 | |
| 2603 | if (dynamic_source && dynamic_sink) { |
| 2604 | dev_err(dapm->dev, |
| 2605 | "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n", |
| 2606 | source->name, control, sink->name); |
| 2607 | return -EINVAL; |
| 2608 | } else if (!dynamic_source && !dynamic_sink) { |
| 2609 | dev_err(dapm->dev, |
| 2610 | "Control not supported for path %s -> [%s] -> %s\n", |
| 2611 | source->name, control, sink->name); |
| 2612 | return -EINVAL; |
| 2613 | } |
| 2614 | |
| 2615 | return 0; |
| 2616 | } |
| 2617 | |
| 2618 | static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm, |
| 2619 | struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink, |
| 2620 | const char *control, |
| 2621 | int (*connected)(struct snd_soc_dapm_widget *source, |
| 2622 | struct snd_soc_dapm_widget *sink)) |
| 2623 | { |
| 2624 | struct snd_soc_dapm_widget *widgets[2]; |
| 2625 | enum snd_soc_dapm_direction dir; |
| 2626 | struct snd_soc_dapm_path *path; |
| 2627 | int ret; |
| 2628 | |
| 2629 | if (wsink->is_supply && !wsource->is_supply) { |
| 2630 | dev_err(dapm->dev, |
| 2631 | "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n", |
| 2632 | wsource->name, wsink->name); |
| 2633 | return -EINVAL; |
| 2634 | } |
| 2635 | |
| 2636 | if (connected && !wsource->is_supply) { |
| 2637 | dev_err(dapm->dev, |
| 2638 | "connected() callback only supported for supply widgets (%s -> %s)\n", |
| 2639 | wsource->name, wsink->name); |
| 2640 | return -EINVAL; |
| 2641 | } |
| 2642 | |
| 2643 | if (wsource->is_supply && control) { |
| 2644 | dev_err(dapm->dev, |
| 2645 | "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n", |
| 2646 | wsource->name, control, wsink->name); |
| 2647 | return -EINVAL; |
| 2648 | } |
| 2649 | |
| 2650 | ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control); |
| 2651 | if (ret) |
| 2652 | return ret; |
| 2653 | |
| 2654 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); |
| 2655 | if (!path) |
| 2656 | return -ENOMEM; |
| 2657 | |
| 2658 | path->node[SND_SOC_DAPM_DIR_IN] = wsource; |
| 2659 | path->node[SND_SOC_DAPM_DIR_OUT] = wsink; |
| 2660 | widgets[SND_SOC_DAPM_DIR_IN] = wsource; |
| 2661 | widgets[SND_SOC_DAPM_DIR_OUT] = wsink; |
| 2662 | |
| 2663 | path->connected = connected; |
| 2664 | INIT_LIST_HEAD(&path->list); |
| 2665 | INIT_LIST_HEAD(&path->list_kcontrol); |
| 2666 | |
| 2667 | if (wsource->is_supply || wsink->is_supply) |
| 2668 | path->is_supply = 1; |
| 2669 | |
| 2670 | /* connect static paths */ |
| 2671 | if (control == NULL) { |
| 2672 | path->connect = 1; |
| 2673 | } else { |
| 2674 | switch (wsource->id) { |
| 2675 | case snd_soc_dapm_demux: |
| 2676 | ret = dapm_connect_mux(dapm, path, control, wsource); |
| 2677 | if (ret) |
| 2678 | goto err; |
| 2679 | break; |
| 2680 | default: |
| 2681 | break; |
| 2682 | } |
| 2683 | |
| 2684 | switch (wsink->id) { |
| 2685 | case snd_soc_dapm_mux: |
| 2686 | ret = dapm_connect_mux(dapm, path, control, wsink); |
| 2687 | if (ret != 0) |
| 2688 | goto err; |
| 2689 | break; |
| 2690 | case snd_soc_dapm_switch: |
| 2691 | case snd_soc_dapm_mixer: |
| 2692 | case snd_soc_dapm_mixer_named_ctl: |
| 2693 | ret = dapm_connect_mixer(dapm, path, control); |
| 2694 | if (ret != 0) |
| 2695 | goto err; |
| 2696 | break; |
| 2697 | default: |
| 2698 | break; |
| 2699 | } |
| 2700 | } |
| 2701 | |
| 2702 | list_add(&path->list, &dapm->card->paths); |
| 2703 | snd_soc_dapm_for_each_direction(dir) |
| 2704 | list_add(&path->list_node[dir], &widgets[dir]->edges[dir]); |
| 2705 | |
| 2706 | snd_soc_dapm_for_each_direction(dir) { |
| 2707 | dapm_update_widget_flags(widgets[dir]); |
| 2708 | dapm_mark_dirty(widgets[dir], "Route added"); |
| 2709 | } |
| 2710 | |
| 2711 | if (dapm->card->instantiated && path->connect) |
| 2712 | dapm_path_invalidate(path); |
| 2713 | |
| 2714 | return 0; |
| 2715 | err: |
| 2716 | kfree(path); |
| 2717 | return ret; |
| 2718 | } |
| 2719 | |
| 2720 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
| 2721 | const struct snd_soc_dapm_route *route) |
| 2722 | { |
| 2723 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; |
| 2724 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
| 2725 | const char *sink; |
| 2726 | const char *source; |
| 2727 | char prefixed_sink[80]; |
| 2728 | char prefixed_source[80]; |
| 2729 | const char *prefix; |
| 2730 | int ret; |
| 2731 | |
| 2732 | prefix = soc_dapm_prefix(dapm); |
| 2733 | if (prefix) { |
| 2734 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
| 2735 | prefix, route->sink); |
| 2736 | sink = prefixed_sink; |
| 2737 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", |
| 2738 | prefix, route->source); |
| 2739 | source = prefixed_source; |
| 2740 | } else { |
| 2741 | sink = route->sink; |
| 2742 | source = route->source; |
| 2743 | } |
| 2744 | |
| 2745 | wsource = dapm_wcache_lookup(&dapm->path_source_cache, source); |
| 2746 | wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink); |
| 2747 | |
| 2748 | if (wsink && wsource) |
| 2749 | goto skip_search; |
| 2750 | |
| 2751 | /* |
| 2752 | * find src and dest widgets over all widgets but favor a widget from |
| 2753 | * current DAPM context |
| 2754 | */ |
| 2755 | list_for_each_entry(w, &dapm->card->widgets, list) { |
| 2756 | if (!wsink && !(strcmp(w->name, sink))) { |
| 2757 | wtsink = w; |
| 2758 | if (w->dapm == dapm) { |
| 2759 | wsink = w; |
| 2760 | if (wsource) |
| 2761 | break; |
| 2762 | } |
| 2763 | continue; |
| 2764 | } |
| 2765 | if (!wsource && !(strcmp(w->name, source))) { |
| 2766 | wtsource = w; |
| 2767 | if (w->dapm == dapm) { |
| 2768 | wsource = w; |
| 2769 | if (wsink) |
| 2770 | break; |
| 2771 | } |
| 2772 | } |
| 2773 | } |
| 2774 | /* use widget from another DAPM context if not found from this */ |
| 2775 | if (!wsink) |
| 2776 | wsink = wtsink; |
| 2777 | if (!wsource) |
| 2778 | wsource = wtsource; |
| 2779 | |
| 2780 | if (wsource == NULL) { |
| 2781 | dev_err(dapm->dev, "ASoC: no source widget found for %s\n", |
| 2782 | route->source); |
| 2783 | return -ENODEV; |
| 2784 | } |
| 2785 | if (wsink == NULL) { |
| 2786 | dev_err(dapm->dev, "ASoC: no sink widget found for %s\n", |
| 2787 | route->sink); |
| 2788 | return -ENODEV; |
| 2789 | } |
| 2790 | |
| 2791 | skip_search: |
| 2792 | dapm_wcache_update(&dapm->path_sink_cache, wsink); |
| 2793 | dapm_wcache_update(&dapm->path_source_cache, wsource); |
| 2794 | |
| 2795 | ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control, |
| 2796 | route->connected); |
| 2797 | if (ret) |
| 2798 | goto err; |
| 2799 | |
| 2800 | return 0; |
| 2801 | err: |
| 2802 | dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n", |
| 2803 | source, route->control, sink); |
| 2804 | return ret; |
| 2805 | } |
| 2806 | |
| 2807 | static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm, |
| 2808 | const struct snd_soc_dapm_route *route) |
| 2809 | { |
| 2810 | struct snd_soc_dapm_widget *wsource, *wsink; |
| 2811 | struct snd_soc_dapm_path *path, *p; |
| 2812 | const char *sink; |
| 2813 | const char *source; |
| 2814 | char prefixed_sink[80]; |
| 2815 | char prefixed_source[80]; |
| 2816 | const char *prefix; |
| 2817 | |
| 2818 | if (route->control) { |
| 2819 | dev_err(dapm->dev, |
| 2820 | "ASoC: Removal of routes with controls not supported\n"); |
| 2821 | return -EINVAL; |
| 2822 | } |
| 2823 | |
| 2824 | prefix = soc_dapm_prefix(dapm); |
| 2825 | if (prefix) { |
| 2826 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
| 2827 | prefix, route->sink); |
| 2828 | sink = prefixed_sink; |
| 2829 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", |
| 2830 | prefix, route->source); |
| 2831 | source = prefixed_source; |
| 2832 | } else { |
| 2833 | sink = route->sink; |
| 2834 | source = route->source; |
| 2835 | } |
| 2836 | |
| 2837 | path = NULL; |
| 2838 | list_for_each_entry(p, &dapm->card->paths, list) { |
| 2839 | if (strcmp(p->source->name, source) != 0) |
| 2840 | continue; |
| 2841 | if (strcmp(p->sink->name, sink) != 0) |
| 2842 | continue; |
| 2843 | path = p; |
| 2844 | break; |
| 2845 | } |
| 2846 | |
| 2847 | if (path) { |
| 2848 | wsource = path->source; |
| 2849 | wsink = path->sink; |
| 2850 | |
| 2851 | dapm_mark_dirty(wsource, "Route removed"); |
| 2852 | dapm_mark_dirty(wsink, "Route removed"); |
| 2853 | if (path->connect) |
| 2854 | dapm_path_invalidate(path); |
| 2855 | |
| 2856 | dapm_free_path(path); |
| 2857 | |
| 2858 | /* Update any path related flags */ |
| 2859 | dapm_update_widget_flags(wsource); |
| 2860 | dapm_update_widget_flags(wsink); |
| 2861 | } else { |
| 2862 | dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n", |
| 2863 | source, sink); |
| 2864 | } |
| 2865 | |
| 2866 | return 0; |
| 2867 | } |
| 2868 | |
| 2869 | /** |
| 2870 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets |
| 2871 | * @dapm: DAPM context |
| 2872 | * @route: audio routes |
| 2873 | * @num: number of routes |
| 2874 | * |
| 2875 | * Connects 2 dapm widgets together via a named audio path. The sink is |
| 2876 | * the widget receiving the audio signal, whilst the source is the sender |
| 2877 | * of the audio signal. |
| 2878 | * |
| 2879 | * Returns 0 for success else error. On error all resources can be freed |
| 2880 | * with a call to snd_soc_card_free(). |
| 2881 | */ |
| 2882 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
| 2883 | const struct snd_soc_dapm_route *route, int num) |
| 2884 | { |
| 2885 | int i, r, ret = 0; |
| 2886 | |
| 2887 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
| 2888 | for (i = 0; i < num; i++) { |
| 2889 | r = snd_soc_dapm_add_route(dapm, route); |
| 2890 | if (r < 0) { |
| 2891 | dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n", |
| 2892 | route->source, |
| 2893 | route->control ? route->control : "direct", |
| 2894 | route->sink); |
| 2895 | ret = r; |
| 2896 | } |
| 2897 | route++; |
| 2898 | } |
| 2899 | mutex_unlock(&dapm->card->dapm_mutex); |
| 2900 | |
| 2901 | return ret; |
| 2902 | } |
| 2903 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); |
| 2904 | |
| 2905 | /** |
| 2906 | * snd_soc_dapm_del_routes - Remove routes between DAPM widgets |
| 2907 | * @dapm: DAPM context |
| 2908 | * @route: audio routes |
| 2909 | * @num: number of routes |
| 2910 | * |
| 2911 | * Removes routes from the DAPM context. |
| 2912 | */ |
| 2913 | int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm, |
| 2914 | const struct snd_soc_dapm_route *route, int num) |
| 2915 | { |
| 2916 | int i; |
| 2917 | |
| 2918 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
| 2919 | for (i = 0; i < num; i++) { |
| 2920 | snd_soc_dapm_del_route(dapm, route); |
| 2921 | route++; |
| 2922 | } |
| 2923 | mutex_unlock(&dapm->card->dapm_mutex); |
| 2924 | |
| 2925 | return 0; |
| 2926 | } |
| 2927 | EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes); |
| 2928 | |
| 2929 | static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm, |
| 2930 | const struct snd_soc_dapm_route *route) |
| 2931 | { |
| 2932 | struct snd_soc_dapm_widget *source = dapm_find_widget(dapm, |
| 2933 | route->source, |
| 2934 | true); |
| 2935 | struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm, |
| 2936 | route->sink, |
| 2937 | true); |
| 2938 | struct snd_soc_dapm_path *path; |
| 2939 | int count = 0; |
| 2940 | |
| 2941 | if (!source) { |
| 2942 | dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n", |
| 2943 | route->source); |
| 2944 | return -ENODEV; |
| 2945 | } |
| 2946 | |
| 2947 | if (!sink) { |
| 2948 | dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n", |
| 2949 | route->sink); |
| 2950 | return -ENODEV; |
| 2951 | } |
| 2952 | |
| 2953 | if (route->control || route->connected) |
| 2954 | dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n", |
| 2955 | route->source, route->sink); |
| 2956 | |
| 2957 | snd_soc_dapm_widget_for_each_sink_path(source, path) { |
| 2958 | if (path->sink == sink) { |
| 2959 | path->weak = 1; |
| 2960 | count++; |
| 2961 | } |
| 2962 | } |
| 2963 | |
| 2964 | if (count == 0) |
| 2965 | dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n", |
| 2966 | route->source, route->sink); |
| 2967 | if (count > 1) |
| 2968 | dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n", |
| 2969 | count, route->source, route->sink); |
| 2970 | |
| 2971 | return 0; |
| 2972 | } |
| 2973 | |
| 2974 | /** |
| 2975 | * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak |
| 2976 | * @dapm: DAPM context |
| 2977 | * @route: audio routes |
| 2978 | * @num: number of routes |
| 2979 | * |
| 2980 | * Mark existing routes matching those specified in the passed array |
| 2981 | * as being weak, meaning that they are ignored for the purpose of |
| 2982 | * power decisions. The main intended use case is for sidetone paths |
| 2983 | * which couple audio between other independent paths if they are both |
| 2984 | * active in order to make the combination work better at the user |
| 2985 | * level but which aren't intended to be "used". |
| 2986 | * |
| 2987 | * Note that CODEC drivers should not use this as sidetone type paths |
| 2988 | * can frequently also be used as bypass paths. |
| 2989 | */ |
| 2990 | int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm, |
| 2991 | const struct snd_soc_dapm_route *route, int num) |
| 2992 | { |
| 2993 | int i, err; |
| 2994 | int ret = 0; |
| 2995 | |
| 2996 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
| 2997 | for (i = 0; i < num; i++) { |
| 2998 | err = snd_soc_dapm_weak_route(dapm, route); |
| 2999 | if (err) |
| 3000 | ret = err; |
| 3001 | route++; |
| 3002 | } |
| 3003 | mutex_unlock(&dapm->card->dapm_mutex); |
| 3004 | |
| 3005 | return ret; |
| 3006 | } |
| 3007 | EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes); |
| 3008 | |
| 3009 | /** |
| 3010 | * snd_soc_dapm_new_widgets - add new dapm widgets |
| 3011 | * @card: card to be checked for new dapm widgets |
| 3012 | * |
| 3013 | * Checks the codec for any new dapm widgets and creates them if found. |
| 3014 | * |
| 3015 | * Returns 0 for success. |
| 3016 | */ |
| 3017 | int snd_soc_dapm_new_widgets(struct snd_soc_card *card) |
| 3018 | { |
| 3019 | struct snd_soc_dapm_widget *w; |
| 3020 | unsigned int val; |
| 3021 | |
| 3022 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
| 3023 | |
| 3024 | list_for_each_entry(w, &card->widgets, list) |
| 3025 | { |
| 3026 | if (w->new) |
| 3027 | continue; |
| 3028 | |
| 3029 | if (w->num_kcontrols) { |
| 3030 | w->kcontrols = kzalloc(w->num_kcontrols * |
| 3031 | sizeof(struct snd_kcontrol *), |
| 3032 | GFP_KERNEL); |
| 3033 | if (!w->kcontrols) { |
| 3034 | mutex_unlock(&card->dapm_mutex); |
| 3035 | return -ENOMEM; |
| 3036 | } |
| 3037 | } |
| 3038 | |
| 3039 | switch(w->id) { |
| 3040 | case snd_soc_dapm_switch: |
| 3041 | case snd_soc_dapm_mixer: |
| 3042 | case snd_soc_dapm_mixer_named_ctl: |
| 3043 | dapm_new_mixer(w); |
| 3044 | break; |
| 3045 | case snd_soc_dapm_mux: |
| 3046 | case snd_soc_dapm_demux: |
| 3047 | dapm_new_mux(w); |
| 3048 | break; |
| 3049 | case snd_soc_dapm_pga: |
| 3050 | case snd_soc_dapm_out_drv: |
| 3051 | dapm_new_pga(w); |
| 3052 | break; |
| 3053 | case snd_soc_dapm_dai_link: |
| 3054 | dapm_new_dai_link(w); |
| 3055 | break; |
| 3056 | default: |
| 3057 | break; |
| 3058 | } |
| 3059 | |
| 3060 | /* Read the initial power state from the device */ |
| 3061 | if (w->reg >= 0) { |
| 3062 | soc_dapm_read(w->dapm, w->reg, &val); |
| 3063 | val = val >> w->shift; |
| 3064 | val &= w->mask; |
| 3065 | if (val == w->on_val) |
| 3066 | w->power = 1; |
| 3067 | } |
| 3068 | |
| 3069 | w->new = 1; |
| 3070 | |
| 3071 | dapm_mark_dirty(w, "new widget"); |
| 3072 | dapm_debugfs_add_widget(w); |
| 3073 | } |
| 3074 | |
| 3075 | dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP); |
| 3076 | mutex_unlock(&card->dapm_mutex); |
| 3077 | return 0; |
| 3078 | } |
| 3079 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); |
| 3080 | |
| 3081 | /** |
| 3082 | * snd_soc_dapm_get_volsw - dapm mixer get callback |
| 3083 | * @kcontrol: mixer control |
| 3084 | * @ucontrol: control element information |
| 3085 | * |
| 3086 | * Callback to get the value of a dapm mixer control. |
| 3087 | * |
| 3088 | * Returns 0 for success. |
| 3089 | */ |
| 3090 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, |
| 3091 | struct snd_ctl_elem_value *ucontrol) |
| 3092 | { |
| 3093 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); |
| 3094 | struct snd_soc_card *card = dapm->card; |
| 3095 | struct soc_mixer_control *mc = |
| 3096 | (struct soc_mixer_control *)kcontrol->private_value; |
| 3097 | int reg = mc->reg; |
| 3098 | unsigned int shift = mc->shift; |
| 3099 | int max = mc->max; |
| 3100 | unsigned int width = fls(max); |
| 3101 | unsigned int mask = (1 << fls(max)) - 1; |
| 3102 | unsigned int invert = mc->invert; |
| 3103 | unsigned int reg_val, val, rval = 0; |
| 3104 | int ret = 0; |
| 3105 | |
| 3106 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 3107 | if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) { |
| 3108 | ret = soc_dapm_read(dapm, reg, ®_val); |
| 3109 | val = (reg_val >> shift) & mask; |
| 3110 | |
| 3111 | if (ret == 0 && reg != mc->rreg) |
| 3112 | ret = soc_dapm_read(dapm, mc->rreg, ®_val); |
| 3113 | |
| 3114 | if (snd_soc_volsw_is_stereo(mc)) |
| 3115 | rval = (reg_val >> mc->rshift) & mask; |
| 3116 | } else { |
| 3117 | reg_val = dapm_kcontrol_get_value(kcontrol); |
| 3118 | val = reg_val & mask; |
| 3119 | |
| 3120 | if (snd_soc_volsw_is_stereo(mc)) |
| 3121 | rval = (reg_val >> width) & mask; |
| 3122 | } |
| 3123 | mutex_unlock(&card->dapm_mutex); |
| 3124 | |
| 3125 | if (ret) |
| 3126 | return ret; |
| 3127 | |
| 3128 | if (invert) |
| 3129 | ucontrol->value.integer.value[0] = max - val; |
| 3130 | else |
| 3131 | ucontrol->value.integer.value[0] = val; |
| 3132 | |
| 3133 | if (snd_soc_volsw_is_stereo(mc)) { |
| 3134 | if (invert) |
| 3135 | ucontrol->value.integer.value[1] = max - rval; |
| 3136 | else |
| 3137 | ucontrol->value.integer.value[1] = rval; |
| 3138 | } |
| 3139 | |
| 3140 | return ret; |
| 3141 | } |
| 3142 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); |
| 3143 | |
| 3144 | /** |
| 3145 | * snd_soc_dapm_put_volsw - dapm mixer set callback |
| 3146 | * @kcontrol: mixer control |
| 3147 | * @ucontrol: control element information |
| 3148 | * |
| 3149 | * Callback to set the value of a dapm mixer control. |
| 3150 | * |
| 3151 | * Returns 0 for success. |
| 3152 | */ |
| 3153 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, |
| 3154 | struct snd_ctl_elem_value *ucontrol) |
| 3155 | { |
| 3156 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); |
| 3157 | struct snd_soc_card *card = dapm->card; |
| 3158 | struct soc_mixer_control *mc = |
| 3159 | (struct soc_mixer_control *)kcontrol->private_value; |
| 3160 | int reg = mc->reg; |
| 3161 | unsigned int shift = mc->shift; |
| 3162 | int max = mc->max; |
| 3163 | unsigned int width = fls(max); |
| 3164 | unsigned int mask = (1 << width) - 1; |
| 3165 | unsigned int invert = mc->invert; |
| 3166 | unsigned int val, rval = 0; |
| 3167 | int connect, rconnect = -1, change, reg_change = 0; |
| 3168 | struct snd_soc_dapm_update update = { NULL }; |
| 3169 | int ret = 0; |
| 3170 | |
| 3171 | val = (ucontrol->value.integer.value[0] & mask); |
| 3172 | connect = !!val; |
| 3173 | |
| 3174 | if (invert) |
| 3175 | val = max - val; |
| 3176 | |
| 3177 | if (snd_soc_volsw_is_stereo(mc)) { |
| 3178 | rval = (ucontrol->value.integer.value[1] & mask); |
| 3179 | rconnect = !!rval; |
| 3180 | if (invert) |
| 3181 | rval = max - rval; |
| 3182 | } |
| 3183 | |
| 3184 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 3185 | |
| 3186 | /* This assumes field width < (bits in unsigned int / 2) */ |
| 3187 | if (width > sizeof(unsigned int) * 8 / 2) |
| 3188 | dev_warn(dapm->dev, |
| 3189 | "ASoC: control %s field width limit exceeded\n", |
| 3190 | kcontrol->id.name); |
| 3191 | change = dapm_kcontrol_set_value(kcontrol, val | (rval << width)); |
| 3192 | |
| 3193 | if (reg != SND_SOC_NOPM) { |
| 3194 | val = val << shift; |
| 3195 | rval = rval << mc->rshift; |
| 3196 | |
| 3197 | reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val); |
| 3198 | |
| 3199 | if (snd_soc_volsw_is_stereo(mc)) |
| 3200 | reg_change |= soc_dapm_test_bits(dapm, mc->rreg, |
| 3201 | mask << mc->rshift, |
| 3202 | rval); |
| 3203 | } |
| 3204 | |
| 3205 | if (change || reg_change) { |
| 3206 | if (reg_change) { |
| 3207 | if (snd_soc_volsw_is_stereo(mc)) { |
| 3208 | update.has_second_set = true; |
| 3209 | update.reg2 = mc->rreg; |
| 3210 | update.mask2 = mask << mc->rshift; |
| 3211 | update.val2 = rval; |
| 3212 | } |
| 3213 | update.kcontrol = kcontrol; |
| 3214 | update.reg = reg; |
| 3215 | update.mask = mask << shift; |
| 3216 | update.val = val; |
| 3217 | card->update = &update; |
| 3218 | } |
| 3219 | change |= reg_change; |
| 3220 | |
| 3221 | ret = soc_dapm_mixer_update_power(card, kcontrol, connect, |
| 3222 | rconnect); |
| 3223 | |
| 3224 | card->update = NULL; |
| 3225 | } |
| 3226 | |
| 3227 | mutex_unlock(&card->dapm_mutex); |
| 3228 | |
| 3229 | if (ret > 0) |
| 3230 | soc_dpcm_runtime_update(card); |
| 3231 | |
| 3232 | return change; |
| 3233 | } |
| 3234 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); |
| 3235 | |
| 3236 | /** |
| 3237 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback |
| 3238 | * @kcontrol: mixer control |
| 3239 | * @ucontrol: control element information |
| 3240 | * |
| 3241 | * Callback to get the value of a dapm enumerated double mixer control. |
| 3242 | * |
| 3243 | * Returns 0 for success. |
| 3244 | */ |
| 3245 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, |
| 3246 | struct snd_ctl_elem_value *ucontrol) |
| 3247 | { |
| 3248 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); |
| 3249 | struct snd_soc_card *card = dapm->card; |
| 3250 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 3251 | unsigned int reg_val, val; |
| 3252 | |
| 3253 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 3254 | if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) { |
| 3255 | int ret = soc_dapm_read(dapm, e->reg, ®_val); |
| 3256 | if (ret) { |
| 3257 | mutex_unlock(&card->dapm_mutex); |
| 3258 | return ret; |
| 3259 | } |
| 3260 | } else { |
| 3261 | reg_val = dapm_kcontrol_get_value(kcontrol); |
| 3262 | } |
| 3263 | mutex_unlock(&card->dapm_mutex); |
| 3264 | |
| 3265 | val = (reg_val >> e->shift_l) & e->mask; |
| 3266 | ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val); |
| 3267 | if (e->shift_l != e->shift_r) { |
| 3268 | val = (reg_val >> e->shift_r) & e->mask; |
| 3269 | val = snd_soc_enum_val_to_item(e, val); |
| 3270 | ucontrol->value.enumerated.item[1] = val; |
| 3271 | } |
| 3272 | |
| 3273 | return 0; |
| 3274 | } |
| 3275 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); |
| 3276 | |
| 3277 | /** |
| 3278 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback |
| 3279 | * @kcontrol: mixer control |
| 3280 | * @ucontrol: control element information |
| 3281 | * |
| 3282 | * Callback to set the value of a dapm enumerated double mixer control. |
| 3283 | * |
| 3284 | * Returns 0 for success. |
| 3285 | */ |
| 3286 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, |
| 3287 | struct snd_ctl_elem_value *ucontrol) |
| 3288 | { |
| 3289 | struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol); |
| 3290 | struct snd_soc_card *card = dapm->card; |
| 3291 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 3292 | unsigned int *item = ucontrol->value.enumerated.item; |
| 3293 | unsigned int val, change, reg_change = 0; |
| 3294 | unsigned int mask; |
| 3295 | struct snd_soc_dapm_update update = { NULL }; |
| 3296 | int ret = 0; |
| 3297 | |
| 3298 | if (item[0] >= e->items) |
| 3299 | return -EINVAL; |
| 3300 | |
| 3301 | val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l; |
| 3302 | mask = e->mask << e->shift_l; |
| 3303 | if (e->shift_l != e->shift_r) { |
| 3304 | if (item[1] > e->items) |
| 3305 | return -EINVAL; |
| 3306 | val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r; |
| 3307 | mask |= e->mask << e->shift_r; |
| 3308 | } |
| 3309 | |
| 3310 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 3311 | |
| 3312 | change = dapm_kcontrol_set_value(kcontrol, val); |
| 3313 | |
| 3314 | if (e->reg != SND_SOC_NOPM) |
| 3315 | reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val); |
| 3316 | |
| 3317 | if (change || reg_change) { |
| 3318 | if (reg_change) { |
| 3319 | update.kcontrol = kcontrol; |
| 3320 | update.reg = e->reg; |
| 3321 | update.mask = mask; |
| 3322 | update.val = val; |
| 3323 | card->update = &update; |
| 3324 | } |
| 3325 | change |= reg_change; |
| 3326 | |
| 3327 | ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e); |
| 3328 | |
| 3329 | card->update = NULL; |
| 3330 | } |
| 3331 | |
| 3332 | mutex_unlock(&card->dapm_mutex); |
| 3333 | |
| 3334 | if (ret > 0) |
| 3335 | soc_dpcm_runtime_update(card); |
| 3336 | |
| 3337 | return change; |
| 3338 | } |
| 3339 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); |
| 3340 | |
| 3341 | /** |
| 3342 | * snd_soc_dapm_info_pin_switch - Info for a pin switch |
| 3343 | * |
| 3344 | * @kcontrol: mixer control |
| 3345 | * @uinfo: control element information |
| 3346 | * |
| 3347 | * Callback to provide information about a pin switch control. |
| 3348 | */ |
| 3349 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, |
| 3350 | struct snd_ctl_elem_info *uinfo) |
| 3351 | { |
| 3352 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| 3353 | uinfo->count = 1; |
| 3354 | uinfo->value.integer.min = 0; |
| 3355 | uinfo->value.integer.max = 1; |
| 3356 | |
| 3357 | return 0; |
| 3358 | } |
| 3359 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); |
| 3360 | |
| 3361 | /** |
| 3362 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch |
| 3363 | * |
| 3364 | * @kcontrol: mixer control |
| 3365 | * @ucontrol: Value |
| 3366 | */ |
| 3367 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, |
| 3368 | struct snd_ctl_elem_value *ucontrol) |
| 3369 | { |
| 3370 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
| 3371 | const char *pin = (const char *)kcontrol->private_value; |
| 3372 | |
| 3373 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 3374 | |
| 3375 | ucontrol->value.integer.value[0] = |
| 3376 | snd_soc_dapm_get_pin_status(&card->dapm, pin); |
| 3377 | |
| 3378 | mutex_unlock(&card->dapm_mutex); |
| 3379 | |
| 3380 | return 0; |
| 3381 | } |
| 3382 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); |
| 3383 | |
| 3384 | /** |
| 3385 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch |
| 3386 | * |
| 3387 | * @kcontrol: mixer control |
| 3388 | * @ucontrol: Value |
| 3389 | */ |
| 3390 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, |
| 3391 | struct snd_ctl_elem_value *ucontrol) |
| 3392 | { |
| 3393 | struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
| 3394 | const char *pin = (const char *)kcontrol->private_value; |
| 3395 | |
| 3396 | if (ucontrol->value.integer.value[0]) |
| 3397 | snd_soc_dapm_enable_pin(&card->dapm, pin); |
| 3398 | else |
| 3399 | snd_soc_dapm_disable_pin(&card->dapm, pin); |
| 3400 | |
| 3401 | snd_soc_dapm_sync(&card->dapm); |
| 3402 | return 0; |
| 3403 | } |
| 3404 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); |
| 3405 | |
| 3406 | struct snd_soc_dapm_widget * |
| 3407 | snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
| 3408 | const struct snd_soc_dapm_widget *widget) |
| 3409 | { |
| 3410 | struct snd_soc_dapm_widget *w; |
| 3411 | |
| 3412 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 3413 | w = snd_soc_dapm_new_control_unlocked(dapm, widget); |
| 3414 | /* Do not nag about probe deferrals */ |
| 3415 | if (IS_ERR(w)) { |
| 3416 | int ret = PTR_ERR(w); |
| 3417 | |
| 3418 | if (ret != -EPROBE_DEFER) |
| 3419 | dev_err(dapm->dev, |
| 3420 | "ASoC: Failed to create DAPM control %s (%d)\n", |
| 3421 | widget->name, ret); |
| 3422 | goto out_unlock; |
| 3423 | } |
| 3424 | if (!w) |
| 3425 | dev_err(dapm->dev, |
| 3426 | "ASoC: Failed to create DAPM control %s\n", |
| 3427 | widget->name); |
| 3428 | |
| 3429 | out_unlock: |
| 3430 | mutex_unlock(&dapm->card->dapm_mutex); |
| 3431 | return w; |
| 3432 | } |
| 3433 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); |
| 3434 | |
| 3435 | struct snd_soc_dapm_widget * |
| 3436 | snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, |
| 3437 | const struct snd_soc_dapm_widget *widget) |
| 3438 | { |
| 3439 | enum snd_soc_dapm_direction dir; |
| 3440 | struct snd_soc_dapm_widget *w; |
| 3441 | const char *prefix; |
| 3442 | int ret; |
| 3443 | |
| 3444 | if ((w = dapm_cnew_widget(widget)) == NULL) |
| 3445 | return NULL; |
| 3446 | |
| 3447 | switch (w->id) { |
| 3448 | case snd_soc_dapm_regulator_supply: |
| 3449 | w->regulator = devm_regulator_get(dapm->dev, w->name); |
| 3450 | if (IS_ERR(w->regulator)) { |
| 3451 | ret = PTR_ERR(w->regulator); |
| 3452 | if (ret == -EPROBE_DEFER) |
| 3453 | return ERR_PTR(ret); |
| 3454 | dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", |
| 3455 | w->name, ret); |
| 3456 | return NULL; |
| 3457 | } |
| 3458 | |
| 3459 | if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) { |
| 3460 | ret = regulator_allow_bypass(w->regulator, true); |
| 3461 | if (ret != 0) |
| 3462 | dev_warn(w->dapm->dev, |
| 3463 | "ASoC: Failed to bypass %s: %d\n", |
| 3464 | w->name, ret); |
| 3465 | } |
| 3466 | break; |
| 3467 | case snd_soc_dapm_clock_supply: |
| 3468 | #ifdef CONFIG_CLKDEV_LOOKUP |
| 3469 | w->clk = devm_clk_get(dapm->dev, w->name); |
| 3470 | if (IS_ERR(w->clk)) { |
| 3471 | ret = PTR_ERR(w->clk); |
| 3472 | if (ret == -EPROBE_DEFER) |
| 3473 | return ERR_PTR(ret); |
| 3474 | dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", |
| 3475 | w->name, ret); |
| 3476 | return NULL; |
| 3477 | } |
| 3478 | #else |
| 3479 | return NULL; |
| 3480 | #endif |
| 3481 | break; |
| 3482 | default: |
| 3483 | break; |
| 3484 | } |
| 3485 | |
| 3486 | prefix = soc_dapm_prefix(dapm); |
| 3487 | if (prefix) |
| 3488 | w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name); |
| 3489 | else |
| 3490 | w->name = kstrdup_const(widget->name, GFP_KERNEL); |
| 3491 | if (w->name == NULL) { |
| 3492 | kfree(w); |
| 3493 | return NULL; |
| 3494 | } |
| 3495 | |
| 3496 | switch (w->id) { |
| 3497 | case snd_soc_dapm_mic: |
| 3498 | w->is_ep = SND_SOC_DAPM_EP_SOURCE; |
| 3499 | w->power_check = dapm_generic_check_power; |
| 3500 | break; |
| 3501 | case snd_soc_dapm_input: |
| 3502 | if (!dapm->card->fully_routed) |
| 3503 | w->is_ep = SND_SOC_DAPM_EP_SOURCE; |
| 3504 | w->power_check = dapm_generic_check_power; |
| 3505 | break; |
| 3506 | case snd_soc_dapm_spk: |
| 3507 | case snd_soc_dapm_hp: |
| 3508 | w->is_ep = SND_SOC_DAPM_EP_SINK; |
| 3509 | w->power_check = dapm_generic_check_power; |
| 3510 | break; |
| 3511 | case snd_soc_dapm_output: |
| 3512 | if (!dapm->card->fully_routed) |
| 3513 | w->is_ep = SND_SOC_DAPM_EP_SINK; |
| 3514 | w->power_check = dapm_generic_check_power; |
| 3515 | break; |
| 3516 | case snd_soc_dapm_vmid: |
| 3517 | case snd_soc_dapm_siggen: |
| 3518 | w->is_ep = SND_SOC_DAPM_EP_SOURCE; |
| 3519 | w->power_check = dapm_always_on_check_power; |
| 3520 | break; |
| 3521 | case snd_soc_dapm_sink: |
| 3522 | w->is_ep = SND_SOC_DAPM_EP_SINK; |
| 3523 | w->power_check = dapm_always_on_check_power; |
| 3524 | break; |
| 3525 | |
| 3526 | case snd_soc_dapm_mux: |
| 3527 | case snd_soc_dapm_demux: |
| 3528 | case snd_soc_dapm_switch: |
| 3529 | case snd_soc_dapm_mixer: |
| 3530 | case snd_soc_dapm_mixer_named_ctl: |
| 3531 | case snd_soc_dapm_adc: |
| 3532 | case snd_soc_dapm_aif_out: |
| 3533 | case snd_soc_dapm_dac: |
| 3534 | case snd_soc_dapm_aif_in: |
| 3535 | case snd_soc_dapm_pga: |
| 3536 | case snd_soc_dapm_out_drv: |
| 3537 | case snd_soc_dapm_micbias: |
| 3538 | case snd_soc_dapm_line: |
| 3539 | case snd_soc_dapm_dai_link: |
| 3540 | case snd_soc_dapm_dai_out: |
| 3541 | case snd_soc_dapm_dai_in: |
| 3542 | w->power_check = dapm_generic_check_power; |
| 3543 | break; |
| 3544 | case snd_soc_dapm_supply: |
| 3545 | case snd_soc_dapm_regulator_supply: |
| 3546 | case snd_soc_dapm_clock_supply: |
| 3547 | case snd_soc_dapm_kcontrol: |
| 3548 | w->is_supply = 1; |
| 3549 | w->power_check = dapm_supply_check_power; |
| 3550 | break; |
| 3551 | default: |
| 3552 | w->power_check = dapm_always_on_check_power; |
| 3553 | break; |
| 3554 | } |
| 3555 | |
| 3556 | w->dapm = dapm; |
| 3557 | INIT_LIST_HEAD(&w->list); |
| 3558 | INIT_LIST_HEAD(&w->dirty); |
| 3559 | list_add_tail(&w->list, &dapm->card->widgets); |
| 3560 | |
| 3561 | snd_soc_dapm_for_each_direction(dir) { |
| 3562 | INIT_LIST_HEAD(&w->edges[dir]); |
| 3563 | w->endpoints[dir] = -1; |
| 3564 | } |
| 3565 | |
| 3566 | /* machine layer sets up unconnected pins and insertions */ |
| 3567 | w->connected = 1; |
| 3568 | return w; |
| 3569 | } |
| 3570 | |
| 3571 | /** |
| 3572 | * snd_soc_dapm_new_controls - create new dapm controls |
| 3573 | * @dapm: DAPM context |
| 3574 | * @widget: widget array |
| 3575 | * @num: number of widgets |
| 3576 | * |
| 3577 | * Creates new DAPM controls based upon the templates. |
| 3578 | * |
| 3579 | * Returns 0 for success else error. |
| 3580 | */ |
| 3581 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
| 3582 | const struct snd_soc_dapm_widget *widget, |
| 3583 | int num) |
| 3584 | { |
| 3585 | struct snd_soc_dapm_widget *w; |
| 3586 | int i; |
| 3587 | int ret = 0; |
| 3588 | |
| 3589 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT); |
| 3590 | for (i = 0; i < num; i++) { |
| 3591 | w = snd_soc_dapm_new_control_unlocked(dapm, widget); |
| 3592 | if (IS_ERR(w)) { |
| 3593 | ret = PTR_ERR(w); |
| 3594 | /* Do not nag about probe deferrals */ |
| 3595 | if (ret == -EPROBE_DEFER) |
| 3596 | break; |
| 3597 | dev_err(dapm->dev, |
| 3598 | "ASoC: Failed to create DAPM control %s (%d)\n", |
| 3599 | widget->name, ret); |
| 3600 | break; |
| 3601 | } |
| 3602 | if (!w) { |
| 3603 | dev_err(dapm->dev, |
| 3604 | "ASoC: Failed to create DAPM control %s\n", |
| 3605 | widget->name); |
| 3606 | ret = -ENOMEM; |
| 3607 | break; |
| 3608 | } |
| 3609 | widget++; |
| 3610 | } |
| 3611 | mutex_unlock(&dapm->card->dapm_mutex); |
| 3612 | return ret; |
| 3613 | } |
| 3614 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); |
| 3615 | |
| 3616 | static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, |
| 3617 | struct snd_kcontrol *kcontrol, int event) |
| 3618 | { |
| 3619 | struct snd_soc_dapm_path *source_p, *sink_p; |
| 3620 | struct snd_soc_dai *source, *sink; |
| 3621 | const struct snd_soc_pcm_stream *config = w->params + w->params_select; |
| 3622 | struct snd_pcm_substream substream; |
| 3623 | struct snd_pcm_hw_params *params = NULL; |
| 3624 | struct snd_pcm_runtime *runtime = NULL; |
| 3625 | u64 fmt; |
| 3626 | int ret; |
| 3627 | |
| 3628 | if (WARN_ON(!config) || |
| 3629 | WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) || |
| 3630 | list_empty(&w->edges[SND_SOC_DAPM_DIR_IN]))) |
| 3631 | return -EINVAL; |
| 3632 | |
| 3633 | /* We only support a single source and sink, pick the first */ |
| 3634 | source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT], |
| 3635 | struct snd_soc_dapm_path, |
| 3636 | list_node[SND_SOC_DAPM_DIR_OUT]); |
| 3637 | sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN], |
| 3638 | struct snd_soc_dapm_path, |
| 3639 | list_node[SND_SOC_DAPM_DIR_IN]); |
| 3640 | |
| 3641 | source = source_p->source->priv; |
| 3642 | sink = sink_p->sink->priv; |
| 3643 | |
| 3644 | /* Be a little careful as we don't want to overflow the mask array */ |
| 3645 | if (config->formats) { |
| 3646 | fmt = ffs(config->formats) - 1; |
| 3647 | } else { |
| 3648 | dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", |
| 3649 | config->formats); |
| 3650 | fmt = 0; |
| 3651 | } |
| 3652 | |
| 3653 | /* Currently very limited parameter selection */ |
| 3654 | params = kzalloc(sizeof(*params), GFP_KERNEL); |
| 3655 | if (!params) { |
| 3656 | ret = -ENOMEM; |
| 3657 | goto out; |
| 3658 | } |
| 3659 | snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); |
| 3660 | |
| 3661 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = |
| 3662 | config->rate_min; |
| 3663 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = |
| 3664 | config->rate_max; |
| 3665 | |
| 3666 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min |
| 3667 | = config->channels_min; |
| 3668 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max |
| 3669 | = config->channels_max; |
| 3670 | |
| 3671 | memset(&substream, 0, sizeof(substream)); |
| 3672 | |
| 3673 | /* Allocate a dummy snd_pcm_runtime for startup() and other ops() */ |
| 3674 | runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); |
| 3675 | if (!runtime) { |
| 3676 | ret = -ENOMEM; |
| 3677 | goto out; |
| 3678 | } |
| 3679 | substream.runtime = runtime; |
| 3680 | |
| 3681 | switch (event) { |
| 3682 | case SND_SOC_DAPM_PRE_PMU: |
| 3683 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; |
| 3684 | if (source->driver->ops && source->driver->ops->startup) { |
| 3685 | ret = source->driver->ops->startup(&substream, source); |
| 3686 | if (ret < 0) { |
| 3687 | dev_err(source->dev, |
| 3688 | "ASoC: startup() failed: %d\n", ret); |
| 3689 | goto out; |
| 3690 | } |
| 3691 | source->active++; |
| 3692 | } |
| 3693 | ret = soc_dai_hw_params(&substream, params, source); |
| 3694 | if (ret < 0) |
| 3695 | goto out; |
| 3696 | |
| 3697 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; |
| 3698 | if (sink->driver->ops && sink->driver->ops->startup) { |
| 3699 | ret = sink->driver->ops->startup(&substream, sink); |
| 3700 | if (ret < 0) { |
| 3701 | dev_err(sink->dev, |
| 3702 | "ASoC: startup() failed: %d\n", ret); |
| 3703 | goto out; |
| 3704 | } |
| 3705 | sink->active++; |
| 3706 | } |
| 3707 | ret = soc_dai_hw_params(&substream, params, sink); |
| 3708 | if (ret < 0) |
| 3709 | goto out; |
| 3710 | break; |
| 3711 | |
| 3712 | case SND_SOC_DAPM_POST_PMU: |
| 3713 | ret = snd_soc_dai_digital_mute(sink, 0, |
| 3714 | SNDRV_PCM_STREAM_PLAYBACK); |
| 3715 | if (ret != 0 && ret != -ENOTSUPP) |
| 3716 | dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret); |
| 3717 | ret = 0; |
| 3718 | break; |
| 3719 | |
| 3720 | case SND_SOC_DAPM_PRE_PMD: |
| 3721 | ret = snd_soc_dai_digital_mute(sink, 1, |
| 3722 | SNDRV_PCM_STREAM_PLAYBACK); |
| 3723 | if (ret != 0 && ret != -ENOTSUPP) |
| 3724 | dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret); |
| 3725 | ret = 0; |
| 3726 | |
| 3727 | source->active--; |
| 3728 | if (source->driver->ops && source->driver->ops->shutdown) { |
| 3729 | substream.stream = SNDRV_PCM_STREAM_CAPTURE; |
| 3730 | source->driver->ops->shutdown(&substream, source); |
| 3731 | } |
| 3732 | |
| 3733 | sink->active--; |
| 3734 | if (sink->driver->ops && sink->driver->ops->shutdown) { |
| 3735 | substream.stream = SNDRV_PCM_STREAM_PLAYBACK; |
| 3736 | sink->driver->ops->shutdown(&substream, sink); |
| 3737 | } |
| 3738 | break; |
| 3739 | |
| 3740 | default: |
| 3741 | WARN(1, "Unknown event %d\n", event); |
| 3742 | ret = -EINVAL; |
| 3743 | } |
| 3744 | |
| 3745 | out: |
| 3746 | kfree(runtime); |
| 3747 | kfree(params); |
| 3748 | return ret; |
| 3749 | } |
| 3750 | |
| 3751 | static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol, |
| 3752 | struct snd_ctl_elem_value *ucontrol) |
| 3753 | { |
| 3754 | struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol); |
| 3755 | |
| 3756 | ucontrol->value.enumerated.item[0] = w->params_select; |
| 3757 | |
| 3758 | return 0; |
| 3759 | } |
| 3760 | |
| 3761 | static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol, |
| 3762 | struct snd_ctl_elem_value *ucontrol) |
| 3763 | { |
| 3764 | struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol); |
| 3765 | |
| 3766 | /* Can't change the config when widget is already powered */ |
| 3767 | if (w->power) |
| 3768 | return -EBUSY; |
| 3769 | |
| 3770 | if (ucontrol->value.enumerated.item[0] == w->params_select) |
| 3771 | return 0; |
| 3772 | |
| 3773 | if (ucontrol->value.enumerated.item[0] >= w->num_params) |
| 3774 | return -EINVAL; |
| 3775 | |
| 3776 | w->params_select = ucontrol->value.enumerated.item[0]; |
| 3777 | |
| 3778 | return 0; |
| 3779 | } |
| 3780 | |
| 3781 | int snd_soc_dapm_new_pcm(struct snd_soc_card *card, |
| 3782 | const struct snd_soc_pcm_stream *params, |
| 3783 | unsigned int num_params, |
| 3784 | struct snd_soc_dapm_widget *source, |
| 3785 | struct snd_soc_dapm_widget *sink) |
| 3786 | { |
| 3787 | struct snd_soc_dapm_widget template; |
| 3788 | struct snd_soc_dapm_widget *w; |
| 3789 | char *link_name; |
| 3790 | int ret, count; |
| 3791 | unsigned long private_value; |
| 3792 | const char **w_param_text; |
| 3793 | struct soc_enum w_param_enum[] = { |
| 3794 | SOC_ENUM_SINGLE(0, 0, 0, NULL), |
| 3795 | }; |
| 3796 | struct snd_kcontrol_new kcontrol_dai_link[] = { |
| 3797 | SOC_ENUM_EXT(NULL, w_param_enum[0], |
| 3798 | snd_soc_dapm_dai_link_get, |
| 3799 | snd_soc_dapm_dai_link_put), |
| 3800 | }; |
| 3801 | const struct snd_soc_pcm_stream *config = params; |
| 3802 | |
| 3803 | w_param_text = devm_kcalloc(card->dev, num_params, |
| 3804 | sizeof(char *), GFP_KERNEL); |
| 3805 | if (!w_param_text) |
| 3806 | return -ENOMEM; |
| 3807 | |
| 3808 | link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s", |
| 3809 | source->name, sink->name); |
| 3810 | if (!link_name) { |
| 3811 | ret = -ENOMEM; |
| 3812 | goto outfree_w_param; |
| 3813 | } |
| 3814 | |
| 3815 | for (count = 0 ; count < num_params; count++) { |
| 3816 | if (!config->stream_name) { |
| 3817 | dev_warn(card->dapm.dev, |
| 3818 | "ASoC: anonymous config %d for dai link %s\n", |
| 3819 | count, link_name); |
| 3820 | w_param_text[count] = |
| 3821 | devm_kasprintf(card->dev, GFP_KERNEL, |
| 3822 | "Anonymous Configuration %d", |
| 3823 | count); |
| 3824 | if (!w_param_text[count]) { |
| 3825 | ret = -ENOMEM; |
| 3826 | goto outfree_link_name; |
| 3827 | } |
| 3828 | } else { |
| 3829 | w_param_text[count] = devm_kmemdup(card->dev, |
| 3830 | config->stream_name, |
| 3831 | strlen(config->stream_name) + 1, |
| 3832 | GFP_KERNEL); |
| 3833 | if (!w_param_text[count]) { |
| 3834 | ret = -ENOMEM; |
| 3835 | goto outfree_link_name; |
| 3836 | } |
| 3837 | } |
| 3838 | config++; |
| 3839 | } |
| 3840 | w_param_enum[0].items = num_params; |
| 3841 | w_param_enum[0].texts = w_param_text; |
| 3842 | |
| 3843 | memset(&template, 0, sizeof(template)); |
| 3844 | template.reg = SND_SOC_NOPM; |
| 3845 | template.id = snd_soc_dapm_dai_link; |
| 3846 | template.name = link_name; |
| 3847 | template.event = snd_soc_dai_link_event; |
| 3848 | template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | |
| 3849 | SND_SOC_DAPM_PRE_PMD; |
| 3850 | template.num_kcontrols = 1; |
| 3851 | /* duplicate w_param_enum on heap so that memory persists */ |
| 3852 | private_value = |
| 3853 | (unsigned long) devm_kmemdup(card->dev, |
| 3854 | (void *)(kcontrol_dai_link[0].private_value), |
| 3855 | sizeof(struct soc_enum), GFP_KERNEL); |
| 3856 | if (!private_value) { |
| 3857 | dev_err(card->dev, "ASoC: Failed to create control for %s widget\n", |
| 3858 | link_name); |
| 3859 | ret = -ENOMEM; |
| 3860 | goto outfree_link_name; |
| 3861 | } |
| 3862 | kcontrol_dai_link[0].private_value = private_value; |
| 3863 | /* duplicate kcontrol_dai_link on heap so that memory persists */ |
| 3864 | template.kcontrol_news = |
| 3865 | devm_kmemdup(card->dev, &kcontrol_dai_link[0], |
| 3866 | sizeof(struct snd_kcontrol_new), |
| 3867 | GFP_KERNEL); |
| 3868 | if (!template.kcontrol_news) { |
| 3869 | dev_err(card->dev, "ASoC: Failed to create control for %s widget\n", |
| 3870 | link_name); |
| 3871 | ret = -ENOMEM; |
| 3872 | goto outfree_private_value; |
| 3873 | } |
| 3874 | |
| 3875 | dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name); |
| 3876 | |
| 3877 | w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template); |
| 3878 | if (IS_ERR(w)) { |
| 3879 | ret = PTR_ERR(w); |
| 3880 | /* Do not nag about probe deferrals */ |
| 3881 | if (ret != -EPROBE_DEFER) |
| 3882 | dev_err(card->dev, |
| 3883 | "ASoC: Failed to create %s widget (%d)\n", |
| 3884 | link_name, ret); |
| 3885 | goto outfree_kcontrol_news; |
| 3886 | } |
| 3887 | if (!w) { |
| 3888 | dev_err(card->dev, "ASoC: Failed to create %s widget\n", |
| 3889 | link_name); |
| 3890 | ret = -ENOMEM; |
| 3891 | goto outfree_kcontrol_news; |
| 3892 | } |
| 3893 | |
| 3894 | w->params = params; |
| 3895 | w->num_params = num_params; |
| 3896 | |
| 3897 | ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL); |
| 3898 | if (ret) |
| 3899 | goto outfree_w; |
| 3900 | return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL); |
| 3901 | |
| 3902 | outfree_w: |
| 3903 | devm_kfree(card->dev, w); |
| 3904 | outfree_kcontrol_news: |
| 3905 | devm_kfree(card->dev, (void *)template.kcontrol_news); |
| 3906 | outfree_private_value: |
| 3907 | devm_kfree(card->dev, (void *)private_value); |
| 3908 | outfree_link_name: |
| 3909 | devm_kfree(card->dev, link_name); |
| 3910 | outfree_w_param: |
| 3911 | for (count = 0 ; count < num_params; count++) |
| 3912 | devm_kfree(card->dev, (void *)w_param_text[count]); |
| 3913 | devm_kfree(card->dev, w_param_text); |
| 3914 | |
| 3915 | return ret; |
| 3916 | } |
| 3917 | |
| 3918 | int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, |
| 3919 | struct snd_soc_dai *dai) |
| 3920 | { |
| 3921 | struct snd_soc_dapm_widget template; |
| 3922 | struct snd_soc_dapm_widget *w; |
| 3923 | |
| 3924 | WARN_ON(dapm->dev != dai->dev); |
| 3925 | |
| 3926 | memset(&template, 0, sizeof(template)); |
| 3927 | template.reg = SND_SOC_NOPM; |
| 3928 | |
| 3929 | if (dai->driver->playback.stream_name) { |
| 3930 | template.id = snd_soc_dapm_dai_in; |
| 3931 | template.name = dai->driver->playback.stream_name; |
| 3932 | template.sname = dai->driver->playback.stream_name; |
| 3933 | |
| 3934 | dev_dbg(dai->dev, "ASoC: adding %s widget\n", |
| 3935 | template.name); |
| 3936 | |
| 3937 | w = snd_soc_dapm_new_control_unlocked(dapm, &template); |
| 3938 | if (IS_ERR(w)) { |
| 3939 | int ret = PTR_ERR(w); |
| 3940 | |
| 3941 | /* Do not nag about probe deferrals */ |
| 3942 | if (ret != -EPROBE_DEFER) |
| 3943 | dev_err(dapm->dev, |
| 3944 | "ASoC: Failed to create %s widget (%d)\n", |
| 3945 | dai->driver->playback.stream_name, ret); |
| 3946 | return ret; |
| 3947 | } |
| 3948 | if (!w) { |
| 3949 | dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", |
| 3950 | dai->driver->playback.stream_name); |
| 3951 | return -ENOMEM; |
| 3952 | } |
| 3953 | |
| 3954 | w->priv = dai; |
| 3955 | dai->playback_widget = w; |
| 3956 | } |
| 3957 | |
| 3958 | if (dai->driver->capture.stream_name) { |
| 3959 | template.id = snd_soc_dapm_dai_out; |
| 3960 | template.name = dai->driver->capture.stream_name; |
| 3961 | template.sname = dai->driver->capture.stream_name; |
| 3962 | |
| 3963 | dev_dbg(dai->dev, "ASoC: adding %s widget\n", |
| 3964 | template.name); |
| 3965 | |
| 3966 | w = snd_soc_dapm_new_control_unlocked(dapm, &template); |
| 3967 | if (IS_ERR(w)) { |
| 3968 | int ret = PTR_ERR(w); |
| 3969 | |
| 3970 | /* Do not nag about probe deferrals */ |
| 3971 | if (ret != -EPROBE_DEFER) |
| 3972 | dev_err(dapm->dev, |
| 3973 | "ASoC: Failed to create %s widget (%d)\n", |
| 3974 | dai->driver->playback.stream_name, ret); |
| 3975 | return ret; |
| 3976 | } |
| 3977 | if (!w) { |
| 3978 | dev_err(dapm->dev, "ASoC: Failed to create %s widget\n", |
| 3979 | dai->driver->capture.stream_name); |
| 3980 | return -ENOMEM; |
| 3981 | } |
| 3982 | |
| 3983 | w->priv = dai; |
| 3984 | dai->capture_widget = w; |
| 3985 | } |
| 3986 | |
| 3987 | return 0; |
| 3988 | } |
| 3989 | |
| 3990 | int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card) |
| 3991 | { |
| 3992 | struct snd_soc_dapm_widget *dai_w, *w; |
| 3993 | struct snd_soc_dapm_widget *src, *sink; |
| 3994 | struct snd_soc_dai *dai; |
| 3995 | |
| 3996 | /* For each DAI widget... */ |
| 3997 | list_for_each_entry(dai_w, &card->widgets, list) { |
| 3998 | switch (dai_w->id) { |
| 3999 | case snd_soc_dapm_dai_in: |
| 4000 | case snd_soc_dapm_dai_out: |
| 4001 | break; |
| 4002 | default: |
| 4003 | continue; |
| 4004 | } |
| 4005 | |
| 4006 | dai = dai_w->priv; |
| 4007 | |
| 4008 | /* ...find all widgets with the same stream and link them */ |
| 4009 | list_for_each_entry(w, &card->widgets, list) { |
| 4010 | if (w->dapm != dai_w->dapm) |
| 4011 | continue; |
| 4012 | |
| 4013 | switch (w->id) { |
| 4014 | case snd_soc_dapm_dai_in: |
| 4015 | case snd_soc_dapm_dai_out: |
| 4016 | continue; |
| 4017 | default: |
| 4018 | break; |
| 4019 | } |
| 4020 | |
| 4021 | if (!w->sname || !strstr(w->sname, dai_w->sname)) |
| 4022 | continue; |
| 4023 | |
| 4024 | if (dai_w->id == snd_soc_dapm_dai_in) { |
| 4025 | src = dai_w; |
| 4026 | sink = w; |
| 4027 | } else { |
| 4028 | src = w; |
| 4029 | sink = dai_w; |
| 4030 | } |
| 4031 | dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name); |
| 4032 | snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL); |
| 4033 | } |
| 4034 | } |
| 4035 | |
| 4036 | return 0; |
| 4037 | } |
| 4038 | |
| 4039 | static void dapm_connect_dai_link_widgets(struct snd_soc_card *card, |
| 4040 | struct snd_soc_pcm_runtime *rtd) |
| 4041 | { |
| 4042 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 4043 | struct snd_soc_dapm_widget *sink, *source; |
| 4044 | int i; |
| 4045 | |
| 4046 | for (i = 0; i < rtd->num_codecs; i++) { |
| 4047 | struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; |
| 4048 | |
| 4049 | /* connect BE DAI playback if widgets are valid */ |
| 4050 | if (codec_dai->playback_widget && cpu_dai->playback_widget) { |
| 4051 | source = cpu_dai->playback_widget; |
| 4052 | sink = codec_dai->playback_widget; |
| 4053 | dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", |
| 4054 | cpu_dai->component->name, source->name, |
| 4055 | codec_dai->component->name, sink->name); |
| 4056 | |
| 4057 | snd_soc_dapm_add_path(&card->dapm, source, sink, |
| 4058 | NULL, NULL); |
| 4059 | } |
| 4060 | |
| 4061 | /* connect BE DAI capture if widgets are valid */ |
| 4062 | if (codec_dai->capture_widget && cpu_dai->capture_widget) { |
| 4063 | source = codec_dai->capture_widget; |
| 4064 | sink = cpu_dai->capture_widget; |
| 4065 | dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n", |
| 4066 | codec_dai->component->name, source->name, |
| 4067 | cpu_dai->component->name, sink->name); |
| 4068 | |
| 4069 | snd_soc_dapm_add_path(&card->dapm, source, sink, |
| 4070 | NULL, NULL); |
| 4071 | } |
| 4072 | } |
| 4073 | } |
| 4074 | |
| 4075 | static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream, |
| 4076 | int event) |
| 4077 | { |
| 4078 | struct snd_soc_dapm_widget *w; |
| 4079 | unsigned int ep; |
| 4080 | |
| 4081 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 4082 | w = dai->playback_widget; |
| 4083 | else |
| 4084 | w = dai->capture_widget; |
| 4085 | |
| 4086 | if (w) { |
| 4087 | dapm_mark_dirty(w, "stream event"); |
| 4088 | |
| 4089 | if (w->id == snd_soc_dapm_dai_in) { |
| 4090 | ep = SND_SOC_DAPM_EP_SOURCE; |
| 4091 | dapm_widget_invalidate_input_paths(w); |
| 4092 | } else { |
| 4093 | ep = SND_SOC_DAPM_EP_SINK; |
| 4094 | dapm_widget_invalidate_output_paths(w); |
| 4095 | } |
| 4096 | |
| 4097 | switch (event) { |
| 4098 | case SND_SOC_DAPM_STREAM_START: |
| 4099 | w->active = 1; |
| 4100 | w->is_ep = ep; |
| 4101 | break; |
| 4102 | case SND_SOC_DAPM_STREAM_STOP: |
| 4103 | w->active = 0; |
| 4104 | w->is_ep = 0; |
| 4105 | break; |
| 4106 | case SND_SOC_DAPM_STREAM_SUSPEND: |
| 4107 | case SND_SOC_DAPM_STREAM_RESUME: |
| 4108 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
| 4109 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
| 4110 | break; |
| 4111 | } |
| 4112 | } |
| 4113 | } |
| 4114 | |
| 4115 | void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card) |
| 4116 | { |
| 4117 | struct snd_soc_pcm_runtime *rtd; |
| 4118 | |
| 4119 | /* for each BE DAI link... */ |
| 4120 | list_for_each_entry(rtd, &card->rtd_list, list) { |
| 4121 | /* |
| 4122 | * dynamic FE links have no fixed DAI mapping. |
| 4123 | * CODEC<->CODEC links have no direct connection. |
| 4124 | */ |
| 4125 | if (rtd->dai_link->dynamic || rtd->dai_link->params) |
| 4126 | continue; |
| 4127 | |
| 4128 | dapm_connect_dai_link_widgets(card, rtd); |
| 4129 | } |
| 4130 | } |
| 4131 | |
| 4132 | static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
| 4133 | int event) |
| 4134 | { |
| 4135 | int i; |
| 4136 | |
| 4137 | soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event); |
| 4138 | for (i = 0; i < rtd->num_codecs; i++) |
| 4139 | soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event); |
| 4140 | |
| 4141 | dapm_power_widgets(rtd->card, event); |
| 4142 | } |
| 4143 | |
| 4144 | /** |
| 4145 | * snd_soc_dapm_stream_event - send a stream event to the dapm core |
| 4146 | * @rtd: PCM runtime data |
| 4147 | * @stream: stream name |
| 4148 | * @event: stream event |
| 4149 | * |
| 4150 | * Sends a stream event to the dapm core. The core then makes any |
| 4151 | * necessary widget power changes. |
| 4152 | * |
| 4153 | * Returns 0 for success else error. |
| 4154 | */ |
| 4155 | void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream, |
| 4156 | int event) |
| 4157 | { |
| 4158 | struct snd_soc_card *card = rtd->card; |
| 4159 | |
| 4160 | mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 4161 | soc_dapm_stream_event(rtd, stream, event); |
| 4162 | mutex_unlock(&card->dapm_mutex); |
| 4163 | } |
| 4164 | |
| 4165 | /** |
| 4166 | * snd_soc_dapm_enable_pin_unlocked - enable pin. |
| 4167 | * @dapm: DAPM context |
| 4168 | * @pin: pin name |
| 4169 | * |
| 4170 | * Enables input/output pin and its parents or children widgets iff there is |
| 4171 | * a valid audio route and active audio stream. |
| 4172 | * |
| 4173 | * Requires external locking. |
| 4174 | * |
| 4175 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4176 | * do any widget power switching. |
| 4177 | */ |
| 4178 | int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, |
| 4179 | const char *pin) |
| 4180 | { |
| 4181 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
| 4182 | } |
| 4183 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked); |
| 4184 | |
| 4185 | /** |
| 4186 | * snd_soc_dapm_enable_pin - enable pin. |
| 4187 | * @dapm: DAPM context |
| 4188 | * @pin: pin name |
| 4189 | * |
| 4190 | * Enables input/output pin and its parents or children widgets iff there is |
| 4191 | * a valid audio route and active audio stream. |
| 4192 | * |
| 4193 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4194 | * do any widget power switching. |
| 4195 | */ |
| 4196 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
| 4197 | { |
| 4198 | int ret; |
| 4199 | |
| 4200 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 4201 | |
| 4202 | ret = snd_soc_dapm_set_pin(dapm, pin, 1); |
| 4203 | |
| 4204 | mutex_unlock(&dapm->card->dapm_mutex); |
| 4205 | |
| 4206 | return ret; |
| 4207 | } |
| 4208 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); |
| 4209 | |
| 4210 | /** |
| 4211 | * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled |
| 4212 | * @dapm: DAPM context |
| 4213 | * @pin: pin name |
| 4214 | * |
| 4215 | * Enables input/output pin regardless of any other state. This is |
| 4216 | * intended for use with microphone bias supplies used in microphone |
| 4217 | * jack detection. |
| 4218 | * |
| 4219 | * Requires external locking. |
| 4220 | * |
| 4221 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4222 | * do any widget power switching. |
| 4223 | */ |
| 4224 | int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm, |
| 4225 | const char *pin) |
| 4226 | { |
| 4227 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
| 4228 | |
| 4229 | if (!w) { |
| 4230 | dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); |
| 4231 | return -EINVAL; |
| 4232 | } |
| 4233 | |
| 4234 | dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin); |
| 4235 | if (!w->connected) { |
| 4236 | /* |
| 4237 | * w->force does not affect the number of input or output paths, |
| 4238 | * so we only have to recheck if w->connected is changed |
| 4239 | */ |
| 4240 | dapm_widget_invalidate_input_paths(w); |
| 4241 | dapm_widget_invalidate_output_paths(w); |
| 4242 | w->connected = 1; |
| 4243 | } |
| 4244 | w->force = 1; |
| 4245 | dapm_mark_dirty(w, "force enable"); |
| 4246 | |
| 4247 | return 0; |
| 4248 | } |
| 4249 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked); |
| 4250 | |
| 4251 | /** |
| 4252 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled |
| 4253 | * @dapm: DAPM context |
| 4254 | * @pin: pin name |
| 4255 | * |
| 4256 | * Enables input/output pin regardless of any other state. This is |
| 4257 | * intended for use with microphone bias supplies used in microphone |
| 4258 | * jack detection. |
| 4259 | * |
| 4260 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4261 | * do any widget power switching. |
| 4262 | */ |
| 4263 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
| 4264 | const char *pin) |
| 4265 | { |
| 4266 | int ret; |
| 4267 | |
| 4268 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 4269 | |
| 4270 | ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin); |
| 4271 | |
| 4272 | mutex_unlock(&dapm->card->dapm_mutex); |
| 4273 | |
| 4274 | return ret; |
| 4275 | } |
| 4276 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); |
| 4277 | |
| 4278 | /** |
| 4279 | * snd_soc_dapm_disable_pin_unlocked - disable pin. |
| 4280 | * @dapm: DAPM context |
| 4281 | * @pin: pin name |
| 4282 | * |
| 4283 | * Disables input/output pin and its parents or children widgets. |
| 4284 | * |
| 4285 | * Requires external locking. |
| 4286 | * |
| 4287 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4288 | * do any widget power switching. |
| 4289 | */ |
| 4290 | int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm, |
| 4291 | const char *pin) |
| 4292 | { |
| 4293 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
| 4294 | } |
| 4295 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked); |
| 4296 | |
| 4297 | /** |
| 4298 | * snd_soc_dapm_disable_pin - disable pin. |
| 4299 | * @dapm: DAPM context |
| 4300 | * @pin: pin name |
| 4301 | * |
| 4302 | * Disables input/output pin and its parents or children widgets. |
| 4303 | * |
| 4304 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4305 | * do any widget power switching. |
| 4306 | */ |
| 4307 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
| 4308 | const char *pin) |
| 4309 | { |
| 4310 | int ret; |
| 4311 | |
| 4312 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 4313 | |
| 4314 | ret = snd_soc_dapm_set_pin(dapm, pin, 0); |
| 4315 | |
| 4316 | mutex_unlock(&dapm->card->dapm_mutex); |
| 4317 | |
| 4318 | return ret; |
| 4319 | } |
| 4320 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
| 4321 | |
| 4322 | /** |
| 4323 | * snd_soc_dapm_nc_pin_unlocked - permanently disable pin. |
| 4324 | * @dapm: DAPM context |
| 4325 | * @pin: pin name |
| 4326 | * |
| 4327 | * Marks the specified pin as being not connected, disabling it along |
| 4328 | * any parent or child widgets. At present this is identical to |
| 4329 | * snd_soc_dapm_disable_pin() but in future it will be extended to do |
| 4330 | * additional things such as disabling controls which only affect |
| 4331 | * paths through the pin. |
| 4332 | * |
| 4333 | * Requires external locking. |
| 4334 | * |
| 4335 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4336 | * do any widget power switching. |
| 4337 | */ |
| 4338 | int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm, |
| 4339 | const char *pin) |
| 4340 | { |
| 4341 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
| 4342 | } |
| 4343 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked); |
| 4344 | |
| 4345 | /** |
| 4346 | * snd_soc_dapm_nc_pin - permanently disable pin. |
| 4347 | * @dapm: DAPM context |
| 4348 | * @pin: pin name |
| 4349 | * |
| 4350 | * Marks the specified pin as being not connected, disabling it along |
| 4351 | * any parent or child widgets. At present this is identical to |
| 4352 | * snd_soc_dapm_disable_pin() but in future it will be extended to do |
| 4353 | * additional things such as disabling controls which only affect |
| 4354 | * paths through the pin. |
| 4355 | * |
| 4356 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
| 4357 | * do any widget power switching. |
| 4358 | */ |
| 4359 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
| 4360 | { |
| 4361 | int ret; |
| 4362 | |
| 4363 | mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME); |
| 4364 | |
| 4365 | ret = snd_soc_dapm_set_pin(dapm, pin, 0); |
| 4366 | |
| 4367 | mutex_unlock(&dapm->card->dapm_mutex); |
| 4368 | |
| 4369 | return ret; |
| 4370 | } |
| 4371 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); |
| 4372 | |
| 4373 | /** |
| 4374 | * snd_soc_dapm_get_pin_status - get audio pin status |
| 4375 | * @dapm: DAPM context |
| 4376 | * @pin: audio signal pin endpoint (or start point) |
| 4377 | * |
| 4378 | * Get audio pin status - connected or disconnected. |
| 4379 | * |
| 4380 | * Returns 1 for connected otherwise 0. |
| 4381 | */ |
| 4382 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
| 4383 | const char *pin) |
| 4384 | { |
| 4385 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); |
| 4386 | |
| 4387 | if (w) |
| 4388 | return w->connected; |
| 4389 | |
| 4390 | return 0; |
| 4391 | } |
| 4392 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
| 4393 | |
| 4394 | /** |
| 4395 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint |
| 4396 | * @dapm: DAPM context |
| 4397 | * @pin: audio signal pin endpoint (or start point) |
| 4398 | * |
| 4399 | * Mark the given endpoint or pin as ignoring suspend. When the |
| 4400 | * system is disabled a path between two endpoints flagged as ignoring |
| 4401 | * suspend will not be disabled. The path must already be enabled via |
| 4402 | * normal means at suspend time, it will not be turned on if it was not |
| 4403 | * already enabled. |
| 4404 | */ |
| 4405 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
| 4406 | const char *pin) |
| 4407 | { |
| 4408 | struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false); |
| 4409 | |
| 4410 | if (!w) { |
| 4411 | dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin); |
| 4412 | return -EINVAL; |
| 4413 | } |
| 4414 | |
| 4415 | w->ignore_suspend = 1; |
| 4416 | |
| 4417 | return 0; |
| 4418 | } |
| 4419 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); |
| 4420 | |
| 4421 | /** |
| 4422 | * snd_soc_dapm_free - free dapm resources |
| 4423 | * @dapm: DAPM context |
| 4424 | * |
| 4425 | * Free all dapm widgets and resources. |
| 4426 | */ |
| 4427 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
| 4428 | { |
| 4429 | dapm_debugfs_cleanup(dapm); |
| 4430 | dapm_free_widgets(dapm); |
| 4431 | list_del(&dapm->list); |
| 4432 | } |
| 4433 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); |
| 4434 | |
| 4435 | static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm) |
| 4436 | { |
| 4437 | struct snd_soc_card *card = dapm->card; |
| 4438 | struct snd_soc_dapm_widget *w; |
| 4439 | LIST_HEAD(down_list); |
| 4440 | int powerdown = 0; |
| 4441 | |
| 4442 | mutex_lock(&card->dapm_mutex); |
| 4443 | |
| 4444 | list_for_each_entry(w, &dapm->card->widgets, list) { |
| 4445 | if (w->dapm != dapm) |
| 4446 | continue; |
| 4447 | if (w->power) { |
| 4448 | dapm_seq_insert(w, &down_list, false); |
| 4449 | w->power = 0; |
| 4450 | powerdown = 1; |
| 4451 | } |
| 4452 | } |
| 4453 | |
| 4454 | /* If there were no widgets to power down we're already in |
| 4455 | * standby. |
| 4456 | */ |
| 4457 | if (powerdown) { |
| 4458 | if (dapm->bias_level == SND_SOC_BIAS_ON) |
| 4459 | snd_soc_dapm_set_bias_level(dapm, |
| 4460 | SND_SOC_BIAS_PREPARE); |
| 4461 | dapm_seq_run(card, &down_list, 0, false); |
| 4462 | if (dapm->bias_level == SND_SOC_BIAS_PREPARE) |
| 4463 | snd_soc_dapm_set_bias_level(dapm, |
| 4464 | SND_SOC_BIAS_STANDBY); |
| 4465 | } |
| 4466 | |
| 4467 | mutex_unlock(&card->dapm_mutex); |
| 4468 | } |
| 4469 | |
| 4470 | /* |
| 4471 | * snd_soc_dapm_shutdown - callback for system shutdown |
| 4472 | */ |
| 4473 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) |
| 4474 | { |
| 4475 | struct snd_soc_dapm_context *dapm; |
| 4476 | |
| 4477 | list_for_each_entry(dapm, &card->dapm_list, list) { |
| 4478 | if (dapm != &card->dapm) { |
| 4479 | soc_dapm_shutdown_dapm(dapm); |
| 4480 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) |
| 4481 | snd_soc_dapm_set_bias_level(dapm, |
| 4482 | SND_SOC_BIAS_OFF); |
| 4483 | } |
| 4484 | } |
| 4485 | |
| 4486 | soc_dapm_shutdown_dapm(&card->dapm); |
| 4487 | if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) |
| 4488 | snd_soc_dapm_set_bias_level(&card->dapm, |
| 4489 | SND_SOC_BIAS_OFF); |
| 4490 | } |
| 4491 | |
| 4492 | /* Module information */ |
| 4493 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
| 4494 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
| 4495 | MODULE_LICENSE("GPL"); |