| 1 | /* |
| 2 | * soc-core.c -- ALSA SoC Audio Layer |
| 3 | * |
| 4 | * Copyright 2005 Wolfson Microelectronics PLC. |
| 5 | * Copyright 2005 Openedhand Ltd. |
| 6 | * Copyright (C) 2010 Slimlogic Ltd. |
| 7 | * Copyright (C) 2010 Texas Instruments Inc. |
| 8 | * |
| 9 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
| 10 | * with code, comments and ideas from :- |
| 11 | * Richard Purdie <richard@openedhand.com> |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify it |
| 14 | * under the terms of the GNU General Public License as published by the |
| 15 | * Free Software Foundation; either version 2 of the License, or (at your |
| 16 | * option) any later version. |
| 17 | * |
| 18 | * TODO: |
| 19 | * o Add hw rules to enforce rates, etc. |
| 20 | * o More testing with other codecs/machines. |
| 21 | * o Add more codecs and platforms to ensure good API coverage. |
| 22 | * o Support TDM on PCM and I2S |
| 23 | */ |
| 24 | |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/moduleparam.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/pm.h> |
| 30 | #include <linux/bitops.h> |
| 31 | #include <linux/debugfs.h> |
| 32 | #include <linux/platform_device.h> |
| 33 | #include <linux/pinctrl/consumer.h> |
| 34 | #include <linux/ctype.h> |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/of.h> |
| 37 | #include <sound/core.h> |
| 38 | #include <sound/jack.h> |
| 39 | #include <sound/pcm.h> |
| 40 | #include <sound/pcm_params.h> |
| 41 | #include <sound/soc.h> |
| 42 | #include <sound/soc-dpcm.h> |
| 43 | #include <sound/soc-topology.h> |
| 44 | #include <sound/initval.h> |
| 45 | |
| 46 | #define CREATE_TRACE_POINTS |
| 47 | #include <trace/events/asoc.h> |
| 48 | |
| 49 | #define NAME_SIZE 32 |
| 50 | |
| 51 | #ifdef CONFIG_DEBUG_FS |
| 52 | struct dentry *snd_soc_debugfs_root; |
| 53 | EXPORT_SYMBOL_GPL(snd_soc_debugfs_root); |
| 54 | #endif |
| 55 | |
| 56 | static DEFINE_MUTEX(client_mutex); |
| 57 | static LIST_HEAD(platform_list); |
| 58 | static LIST_HEAD(codec_list); |
| 59 | static LIST_HEAD(component_list); |
| 60 | |
| 61 | /* |
| 62 | * This is a timeout to do a DAPM powerdown after a stream is closed(). |
| 63 | * It can be used to eliminate pops between different playback streams, e.g. |
| 64 | * between two audio tracks. |
| 65 | */ |
| 66 | static int pmdown_time = 5000; |
| 67 | module_param(pmdown_time, int, 0); |
| 68 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); |
| 69 | |
| 70 | /* returns the minimum number of bytes needed to represent |
| 71 | * a particular given value */ |
| 72 | static int min_bytes_needed(unsigned long val) |
| 73 | { |
| 74 | int c = 0; |
| 75 | int i; |
| 76 | |
| 77 | for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c) |
| 78 | if (val & (1UL << i)) |
| 79 | break; |
| 80 | c = (sizeof val * 8) - c; |
| 81 | if (!c || (c % 8)) |
| 82 | c = (c + 8) / 8; |
| 83 | else |
| 84 | c /= 8; |
| 85 | return c; |
| 86 | } |
| 87 | |
| 88 | /* fill buf which is 'len' bytes with a formatted |
| 89 | * string of the form 'reg: value\n' */ |
| 90 | static int format_register_str(struct snd_soc_codec *codec, |
| 91 | unsigned int reg, char *buf, size_t len) |
| 92 | { |
| 93 | int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| 94 | int regsize = codec->driver->reg_word_size * 2; |
| 95 | int ret; |
| 96 | |
| 97 | /* +2 for ': ' and + 1 for '\n' */ |
| 98 | if (wordsize + regsize + 2 + 1 != len) |
| 99 | return -EINVAL; |
| 100 | |
| 101 | sprintf(buf, "%.*x: ", wordsize, reg); |
| 102 | buf += wordsize + 2; |
| 103 | |
| 104 | ret = snd_soc_read(codec, reg); |
| 105 | if (ret < 0) |
| 106 | memset(buf, 'X', regsize); |
| 107 | else |
| 108 | sprintf(buf, "%.*x", regsize, ret); |
| 109 | buf[regsize] = '\n'; |
| 110 | /* no NUL-termination needed */ |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | /* codec register dump */ |
| 115 | static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf, |
| 116 | size_t count, loff_t pos) |
| 117 | { |
| 118 | int i, step = 1; |
| 119 | int wordsize, regsize; |
| 120 | int len; |
| 121 | size_t total = 0; |
| 122 | loff_t p = 0; |
| 123 | |
| 124 | wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| 125 | regsize = codec->driver->reg_word_size * 2; |
| 126 | |
| 127 | len = wordsize + regsize + 2 + 1; |
| 128 | |
| 129 | if (!codec->driver->reg_cache_size) |
| 130 | return 0; |
| 131 | |
| 132 | if (codec->driver->reg_cache_step) |
| 133 | step = codec->driver->reg_cache_step; |
| 134 | |
| 135 | for (i = 0; i < codec->driver->reg_cache_size; i += step) { |
| 136 | /* only support larger than PAGE_SIZE bytes debugfs |
| 137 | * entries for the default case */ |
| 138 | if (p >= pos) { |
| 139 | if (total + len >= count - 1) |
| 140 | break; |
| 141 | format_register_str(codec, i, buf + total, len); |
| 142 | total += len; |
| 143 | } |
| 144 | p += len; |
| 145 | } |
| 146 | |
| 147 | total = min(total, count - 1); |
| 148 | |
| 149 | return total; |
| 150 | } |
| 151 | |
| 152 | static ssize_t codec_reg_show(struct device *dev, |
| 153 | struct device_attribute *attr, char *buf) |
| 154 | { |
| 155 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 156 | |
| 157 | return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0); |
| 158 | } |
| 159 | |
| 160 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
| 161 | |
| 162 | static ssize_t pmdown_time_show(struct device *dev, |
| 163 | struct device_attribute *attr, char *buf) |
| 164 | { |
| 165 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 166 | |
| 167 | return sprintf(buf, "%ld\n", rtd->pmdown_time); |
| 168 | } |
| 169 | |
| 170 | static ssize_t pmdown_time_set(struct device *dev, |
| 171 | struct device_attribute *attr, |
| 172 | const char *buf, size_t count) |
| 173 | { |
| 174 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 175 | int ret; |
| 176 | |
| 177 | ret = kstrtol(buf, 10, &rtd->pmdown_time); |
| 178 | if (ret) |
| 179 | return ret; |
| 180 | |
| 181 | return count; |
| 182 | } |
| 183 | |
| 184 | static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); |
| 185 | |
| 186 | static struct attribute *soc_dev_attrs[] = { |
| 187 | &dev_attr_codec_reg.attr, |
| 188 | &dev_attr_pmdown_time.attr, |
| 189 | NULL |
| 190 | }; |
| 191 | |
| 192 | static umode_t soc_dev_attr_is_visible(struct kobject *kobj, |
| 193 | struct attribute *attr, int idx) |
| 194 | { |
| 195 | struct device *dev = kobj_to_dev(kobj); |
| 196 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 197 | |
| 198 | if (attr == &dev_attr_pmdown_time.attr) |
| 199 | return attr->mode; /* always visible */ |
| 200 | return rtd->codec ? attr->mode : 0; /* enabled only with codec */ |
| 201 | } |
| 202 | |
| 203 | static const struct attribute_group soc_dapm_dev_group = { |
| 204 | .attrs = soc_dapm_dev_attrs, |
| 205 | .is_visible = soc_dev_attr_is_visible, |
| 206 | }; |
| 207 | |
| 208 | static const struct attribute_group soc_dev_roup = { |
| 209 | .attrs = soc_dev_attrs, |
| 210 | .is_visible = soc_dev_attr_is_visible, |
| 211 | }; |
| 212 | |
| 213 | static const struct attribute_group *soc_dev_attr_groups[] = { |
| 214 | &soc_dapm_dev_group, |
| 215 | &soc_dev_roup, |
| 216 | NULL |
| 217 | }; |
| 218 | |
| 219 | #ifdef CONFIG_DEBUG_FS |
| 220 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, |
| 221 | size_t count, loff_t *ppos) |
| 222 | { |
| 223 | ssize_t ret; |
| 224 | struct snd_soc_codec *codec = file->private_data; |
| 225 | char *buf; |
| 226 | |
| 227 | if (*ppos < 0 || !count) |
| 228 | return -EINVAL; |
| 229 | |
| 230 | buf = kmalloc(count, GFP_KERNEL); |
| 231 | if (!buf) |
| 232 | return -ENOMEM; |
| 233 | |
| 234 | ret = soc_codec_reg_show(codec, buf, count, *ppos); |
| 235 | if (ret >= 0) { |
| 236 | if (copy_to_user(user_buf, buf, ret)) { |
| 237 | kfree(buf); |
| 238 | return -EFAULT; |
| 239 | } |
| 240 | *ppos += ret; |
| 241 | } |
| 242 | |
| 243 | kfree(buf); |
| 244 | return ret; |
| 245 | } |
| 246 | |
| 247 | static ssize_t codec_reg_write_file(struct file *file, |
| 248 | const char __user *user_buf, size_t count, loff_t *ppos) |
| 249 | { |
| 250 | char buf[32]; |
| 251 | size_t buf_size; |
| 252 | char *start = buf; |
| 253 | unsigned long reg, value; |
| 254 | struct snd_soc_codec *codec = file->private_data; |
| 255 | int ret; |
| 256 | |
| 257 | buf_size = min(count, (sizeof(buf)-1)); |
| 258 | if (copy_from_user(buf, user_buf, buf_size)) |
| 259 | return -EFAULT; |
| 260 | buf[buf_size] = 0; |
| 261 | |
| 262 | while (*start == ' ') |
| 263 | start++; |
| 264 | reg = simple_strtoul(start, &start, 16); |
| 265 | while (*start == ' ') |
| 266 | start++; |
| 267 | ret = kstrtoul(start, 16, &value); |
| 268 | if (ret) |
| 269 | return ret; |
| 270 | |
| 271 | /* Userspace has been fiddling around behind the kernel's back */ |
| 272 | add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE); |
| 273 | |
| 274 | snd_soc_write(codec, reg, value); |
| 275 | return buf_size; |
| 276 | } |
| 277 | |
| 278 | static const struct file_operations codec_reg_fops = { |
| 279 | .open = simple_open, |
| 280 | .read = codec_reg_read_file, |
| 281 | .write = codec_reg_write_file, |
| 282 | .llseek = default_llseek, |
| 283 | }; |
| 284 | |
| 285 | static void soc_init_component_debugfs(struct snd_soc_component *component) |
| 286 | { |
| 287 | if (!component->card->debugfs_card_root) |
| 288 | return; |
| 289 | |
| 290 | if (component->debugfs_prefix) { |
| 291 | char *name; |
| 292 | |
| 293 | name = kasprintf(GFP_KERNEL, "%s:%s", |
| 294 | component->debugfs_prefix, component->name); |
| 295 | if (name) { |
| 296 | component->debugfs_root = debugfs_create_dir(name, |
| 297 | component->card->debugfs_card_root); |
| 298 | kfree(name); |
| 299 | } |
| 300 | } else { |
| 301 | component->debugfs_root = debugfs_create_dir(component->name, |
| 302 | component->card->debugfs_card_root); |
| 303 | } |
| 304 | |
| 305 | if (!component->debugfs_root) { |
| 306 | dev_warn(component->dev, |
| 307 | "ASoC: Failed to create component debugfs directory\n"); |
| 308 | return; |
| 309 | } |
| 310 | |
| 311 | snd_soc_dapm_debugfs_init(snd_soc_component_get_dapm(component), |
| 312 | component->debugfs_root); |
| 313 | |
| 314 | if (component->init_debugfs) |
| 315 | component->init_debugfs(component); |
| 316 | } |
| 317 | |
| 318 | static void soc_cleanup_component_debugfs(struct snd_soc_component *component) |
| 319 | { |
| 320 | debugfs_remove_recursive(component->debugfs_root); |
| 321 | } |
| 322 | |
| 323 | static void soc_init_codec_debugfs(struct snd_soc_component *component) |
| 324 | { |
| 325 | struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| 326 | |
| 327 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
| 328 | codec->component.debugfs_root, |
| 329 | codec, &codec_reg_fops); |
| 330 | if (!codec->debugfs_reg) |
| 331 | dev_warn(codec->dev, |
| 332 | "ASoC: Failed to create codec register debugfs file\n"); |
| 333 | } |
| 334 | |
| 335 | static ssize_t codec_list_read_file(struct file *file, char __user *user_buf, |
| 336 | size_t count, loff_t *ppos) |
| 337 | { |
| 338 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 339 | ssize_t len, ret = 0; |
| 340 | struct snd_soc_codec *codec; |
| 341 | |
| 342 | if (!buf) |
| 343 | return -ENOMEM; |
| 344 | |
| 345 | mutex_lock(&client_mutex); |
| 346 | |
| 347 | list_for_each_entry(codec, &codec_list, list) { |
| 348 | len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| 349 | codec->component.name); |
| 350 | if (len >= 0) |
| 351 | ret += len; |
| 352 | if (ret > PAGE_SIZE) { |
| 353 | ret = PAGE_SIZE; |
| 354 | break; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | mutex_unlock(&client_mutex); |
| 359 | |
| 360 | if (ret >= 0) |
| 361 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 362 | |
| 363 | kfree(buf); |
| 364 | |
| 365 | return ret; |
| 366 | } |
| 367 | |
| 368 | static const struct file_operations codec_list_fops = { |
| 369 | .read = codec_list_read_file, |
| 370 | .llseek = default_llseek,/* read accesses f_pos */ |
| 371 | }; |
| 372 | |
| 373 | static ssize_t dai_list_read_file(struct file *file, char __user *user_buf, |
| 374 | size_t count, loff_t *ppos) |
| 375 | { |
| 376 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 377 | ssize_t len, ret = 0; |
| 378 | struct snd_soc_component *component; |
| 379 | struct snd_soc_dai *dai; |
| 380 | |
| 381 | if (!buf) |
| 382 | return -ENOMEM; |
| 383 | |
| 384 | mutex_lock(&client_mutex); |
| 385 | |
| 386 | list_for_each_entry(component, &component_list, list) { |
| 387 | list_for_each_entry(dai, &component->dai_list, list) { |
| 388 | len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| 389 | dai->name); |
| 390 | if (len >= 0) |
| 391 | ret += len; |
| 392 | if (ret > PAGE_SIZE) { |
| 393 | ret = PAGE_SIZE; |
| 394 | break; |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | mutex_unlock(&client_mutex); |
| 400 | |
| 401 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 402 | |
| 403 | kfree(buf); |
| 404 | |
| 405 | return ret; |
| 406 | } |
| 407 | |
| 408 | static const struct file_operations dai_list_fops = { |
| 409 | .read = dai_list_read_file, |
| 410 | .llseek = default_llseek,/* read accesses f_pos */ |
| 411 | }; |
| 412 | |
| 413 | static ssize_t platform_list_read_file(struct file *file, |
| 414 | char __user *user_buf, |
| 415 | size_t count, loff_t *ppos) |
| 416 | { |
| 417 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 418 | ssize_t len, ret = 0; |
| 419 | struct snd_soc_platform *platform; |
| 420 | |
| 421 | if (!buf) |
| 422 | return -ENOMEM; |
| 423 | |
| 424 | mutex_lock(&client_mutex); |
| 425 | |
| 426 | list_for_each_entry(platform, &platform_list, list) { |
| 427 | len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| 428 | platform->component.name); |
| 429 | if (len >= 0) |
| 430 | ret += len; |
| 431 | if (ret > PAGE_SIZE) { |
| 432 | ret = PAGE_SIZE; |
| 433 | break; |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | mutex_unlock(&client_mutex); |
| 438 | |
| 439 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 440 | |
| 441 | kfree(buf); |
| 442 | |
| 443 | return ret; |
| 444 | } |
| 445 | |
| 446 | static const struct file_operations platform_list_fops = { |
| 447 | .read = platform_list_read_file, |
| 448 | .llseek = default_llseek,/* read accesses f_pos */ |
| 449 | }; |
| 450 | |
| 451 | static void soc_init_card_debugfs(struct snd_soc_card *card) |
| 452 | { |
| 453 | if (!snd_soc_debugfs_root) |
| 454 | return; |
| 455 | |
| 456 | card->debugfs_card_root = debugfs_create_dir(card->name, |
| 457 | snd_soc_debugfs_root); |
| 458 | if (!card->debugfs_card_root) { |
| 459 | dev_warn(card->dev, |
| 460 | "ASoC: Failed to create card debugfs directory\n"); |
| 461 | return; |
| 462 | } |
| 463 | |
| 464 | card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
| 465 | card->debugfs_card_root, |
| 466 | &card->pop_time); |
| 467 | if (!card->debugfs_pop_time) |
| 468 | dev_warn(card->dev, |
| 469 | "ASoC: Failed to create pop time debugfs file\n"); |
| 470 | } |
| 471 | |
| 472 | static void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| 473 | { |
| 474 | debugfs_remove_recursive(card->debugfs_card_root); |
| 475 | } |
| 476 | |
| 477 | |
| 478 | static void snd_soc_debugfs_init(void) |
| 479 | { |
| 480 | snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL); |
| 481 | if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) { |
| 482 | pr_warn("ASoC: Failed to create debugfs directory\n"); |
| 483 | snd_soc_debugfs_root = NULL; |
| 484 | return; |
| 485 | } |
| 486 | |
| 487 | if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL, |
| 488 | &codec_list_fops)) |
| 489 | pr_warn("ASoC: Failed to create CODEC list debugfs file\n"); |
| 490 | |
| 491 | if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL, |
| 492 | &dai_list_fops)) |
| 493 | pr_warn("ASoC: Failed to create DAI list debugfs file\n"); |
| 494 | |
| 495 | if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL, |
| 496 | &platform_list_fops)) |
| 497 | pr_warn("ASoC: Failed to create platform list debugfs file\n"); |
| 498 | } |
| 499 | |
| 500 | static void snd_soc_debugfs_exit(void) |
| 501 | { |
| 502 | debugfs_remove_recursive(snd_soc_debugfs_root); |
| 503 | } |
| 504 | |
| 505 | #else |
| 506 | |
| 507 | #define soc_init_codec_debugfs NULL |
| 508 | |
| 509 | static inline void soc_init_component_debugfs( |
| 510 | struct snd_soc_component *component) |
| 511 | { |
| 512 | } |
| 513 | |
| 514 | static inline void soc_cleanup_component_debugfs( |
| 515 | struct snd_soc_component *component) |
| 516 | { |
| 517 | } |
| 518 | |
| 519 | static inline void soc_init_card_debugfs(struct snd_soc_card *card) |
| 520 | { |
| 521 | } |
| 522 | |
| 523 | static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| 524 | { |
| 525 | } |
| 526 | |
| 527 | static inline void snd_soc_debugfs_init(void) |
| 528 | { |
| 529 | } |
| 530 | |
| 531 | static inline void snd_soc_debugfs_exit(void) |
| 532 | { |
| 533 | } |
| 534 | |
| 535 | #endif |
| 536 | |
| 537 | struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, |
| 538 | const char *dai_link, int stream) |
| 539 | { |
| 540 | int i; |
| 541 | |
| 542 | for (i = 0; i < card->num_links; i++) { |
| 543 | if (card->rtd[i].dai_link->no_pcm && |
| 544 | !strcmp(card->rtd[i].dai_link->name, dai_link)) |
| 545 | return card->rtd[i].pcm->streams[stream].substream; |
| 546 | } |
| 547 | dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link); |
| 548 | return NULL; |
| 549 | } |
| 550 | EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream); |
| 551 | |
| 552 | struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, |
| 553 | const char *dai_link) |
| 554 | { |
| 555 | int i; |
| 556 | |
| 557 | for (i = 0; i < card->num_links; i++) { |
| 558 | if (!strcmp(card->rtd[i].dai_link->name, dai_link)) |
| 559 | return &card->rtd[i]; |
| 560 | } |
| 561 | dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); |
| 562 | return NULL; |
| 563 | } |
| 564 | EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); |
| 565 | |
| 566 | static void codec2codec_close_delayed_work(struct work_struct *work) |
| 567 | { |
| 568 | /* Currently nothing to do for c2c links |
| 569 | * Since c2c links are internal nodes in the DAPM graph and |
| 570 | * don't interface with the outside world or application layer |
| 571 | * we don't have to do any special handling on close. |
| 572 | */ |
| 573 | } |
| 574 | |
| 575 | #ifdef CONFIG_PM_SLEEP |
| 576 | /* powers down audio subsystem for suspend */ |
| 577 | int snd_soc_suspend(struct device *dev) |
| 578 | { |
| 579 | struct snd_soc_card *card = dev_get_drvdata(dev); |
| 580 | struct snd_soc_codec *codec; |
| 581 | int i, j; |
| 582 | |
| 583 | /* If the card is not initialized yet there is nothing to do */ |
| 584 | if (!card->instantiated) |
| 585 | return 0; |
| 586 | |
| 587 | /* Due to the resume being scheduled into a workqueue we could |
| 588 | * suspend before that's finished - wait for it to complete. |
| 589 | */ |
| 590 | snd_power_lock(card->snd_card); |
| 591 | snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0); |
| 592 | snd_power_unlock(card->snd_card); |
| 593 | |
| 594 | /* we're going to block userspace touching us until resume completes */ |
| 595 | snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot); |
| 596 | |
| 597 | /* mute any active DACs */ |
| 598 | for (i = 0; i < card->num_rtd; i++) { |
| 599 | |
| 600 | if (card->rtd[i].dai_link->ignore_suspend) |
| 601 | continue; |
| 602 | |
| 603 | for (j = 0; j < card->rtd[i].num_codecs; j++) { |
| 604 | struct snd_soc_dai *dai = card->rtd[i].codec_dais[j]; |
| 605 | struct snd_soc_dai_driver *drv = dai->driver; |
| 606 | |
| 607 | if (drv->ops->digital_mute && dai->playback_active) |
| 608 | drv->ops->digital_mute(dai, 1); |
| 609 | } |
| 610 | } |
| 611 | |
| 612 | /* suspend all pcms */ |
| 613 | for (i = 0; i < card->num_rtd; i++) { |
| 614 | if (card->rtd[i].dai_link->ignore_suspend) |
| 615 | continue; |
| 616 | |
| 617 | snd_pcm_suspend_all(card->rtd[i].pcm); |
| 618 | } |
| 619 | |
| 620 | if (card->suspend_pre) |
| 621 | card->suspend_pre(card); |
| 622 | |
| 623 | for (i = 0; i < card->num_rtd; i++) { |
| 624 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 625 | |
| 626 | if (card->rtd[i].dai_link->ignore_suspend) |
| 627 | continue; |
| 628 | |
| 629 | if (cpu_dai->driver->suspend && !cpu_dai->driver->bus_control) |
| 630 | cpu_dai->driver->suspend(cpu_dai); |
| 631 | } |
| 632 | |
| 633 | /* close any waiting streams */ |
| 634 | for (i = 0; i < card->num_rtd; i++) |
| 635 | flush_delayed_work(&card->rtd[i].delayed_work); |
| 636 | |
| 637 | for (i = 0; i < card->num_rtd; i++) { |
| 638 | |
| 639 | if (card->rtd[i].dai_link->ignore_suspend) |
| 640 | continue; |
| 641 | |
| 642 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 643 | SNDRV_PCM_STREAM_PLAYBACK, |
| 644 | SND_SOC_DAPM_STREAM_SUSPEND); |
| 645 | |
| 646 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 647 | SNDRV_PCM_STREAM_CAPTURE, |
| 648 | SND_SOC_DAPM_STREAM_SUSPEND); |
| 649 | } |
| 650 | |
| 651 | /* Recheck all endpoints too, their state is affected by suspend */ |
| 652 | dapm_mark_endpoints_dirty(card); |
| 653 | snd_soc_dapm_sync(&card->dapm); |
| 654 | |
| 655 | /* suspend all CODECs */ |
| 656 | list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| 657 | struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); |
| 658 | |
| 659 | /* If there are paths active then the CODEC will be held with |
| 660 | * bias _ON and should not be suspended. */ |
| 661 | if (!codec->suspended) { |
| 662 | switch (snd_soc_dapm_get_bias_level(dapm)) { |
| 663 | case SND_SOC_BIAS_STANDBY: |
| 664 | /* |
| 665 | * If the CODEC is capable of idle |
| 666 | * bias off then being in STANDBY |
| 667 | * means it's doing something, |
| 668 | * otherwise fall through. |
| 669 | */ |
| 670 | if (dapm->idle_bias_off) { |
| 671 | dev_dbg(codec->dev, |
| 672 | "ASoC: idle_bias_off CODEC on over suspend\n"); |
| 673 | break; |
| 674 | } |
| 675 | |
| 676 | case SND_SOC_BIAS_OFF: |
| 677 | if (codec->driver->suspend) |
| 678 | codec->driver->suspend(codec); |
| 679 | codec->suspended = 1; |
| 680 | if (codec->component.regmap) |
| 681 | regcache_mark_dirty(codec->component.regmap); |
| 682 | /* deactivate pins to sleep state */ |
| 683 | pinctrl_pm_select_sleep_state(codec->dev); |
| 684 | break; |
| 685 | default: |
| 686 | dev_dbg(codec->dev, |
| 687 | "ASoC: CODEC is on over suspend\n"); |
| 688 | break; |
| 689 | } |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | for (i = 0; i < card->num_rtd; i++) { |
| 694 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 695 | |
| 696 | if (card->rtd[i].dai_link->ignore_suspend) |
| 697 | continue; |
| 698 | |
| 699 | if (cpu_dai->driver->suspend && cpu_dai->driver->bus_control) |
| 700 | cpu_dai->driver->suspend(cpu_dai); |
| 701 | |
| 702 | /* deactivate pins to sleep state */ |
| 703 | pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| 704 | } |
| 705 | |
| 706 | if (card->suspend_post) |
| 707 | card->suspend_post(card); |
| 708 | |
| 709 | return 0; |
| 710 | } |
| 711 | EXPORT_SYMBOL_GPL(snd_soc_suspend); |
| 712 | |
| 713 | /* deferred resume work, so resume can complete before we finished |
| 714 | * setting our codec back up, which can be very slow on I2C |
| 715 | */ |
| 716 | static void soc_resume_deferred(struct work_struct *work) |
| 717 | { |
| 718 | struct snd_soc_card *card = |
| 719 | container_of(work, struct snd_soc_card, deferred_resume_work); |
| 720 | struct snd_soc_codec *codec; |
| 721 | int i, j; |
| 722 | |
| 723 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
| 724 | * so userspace apps are blocked from touching us |
| 725 | */ |
| 726 | |
| 727 | dev_dbg(card->dev, "ASoC: starting resume work\n"); |
| 728 | |
| 729 | /* Bring us up into D2 so that DAPM starts enabling things */ |
| 730 | snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2); |
| 731 | |
| 732 | if (card->resume_pre) |
| 733 | card->resume_pre(card); |
| 734 | |
| 735 | /* resume control bus DAIs */ |
| 736 | for (i = 0; i < card->num_rtd; i++) { |
| 737 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 738 | |
| 739 | if (card->rtd[i].dai_link->ignore_suspend) |
| 740 | continue; |
| 741 | |
| 742 | if (cpu_dai->driver->resume && cpu_dai->driver->bus_control) |
| 743 | cpu_dai->driver->resume(cpu_dai); |
| 744 | } |
| 745 | |
| 746 | list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| 747 | if (codec->suspended) { |
| 748 | if (codec->driver->resume) |
| 749 | codec->driver->resume(codec); |
| 750 | codec->suspended = 0; |
| 751 | } |
| 752 | } |
| 753 | |
| 754 | for (i = 0; i < card->num_rtd; i++) { |
| 755 | |
| 756 | if (card->rtd[i].dai_link->ignore_suspend) |
| 757 | continue; |
| 758 | |
| 759 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 760 | SNDRV_PCM_STREAM_PLAYBACK, |
| 761 | SND_SOC_DAPM_STREAM_RESUME); |
| 762 | |
| 763 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 764 | SNDRV_PCM_STREAM_CAPTURE, |
| 765 | SND_SOC_DAPM_STREAM_RESUME); |
| 766 | } |
| 767 | |
| 768 | /* unmute any active DACs */ |
| 769 | for (i = 0; i < card->num_rtd; i++) { |
| 770 | |
| 771 | if (card->rtd[i].dai_link->ignore_suspend) |
| 772 | continue; |
| 773 | |
| 774 | for (j = 0; j < card->rtd[i].num_codecs; j++) { |
| 775 | struct snd_soc_dai *dai = card->rtd[i].codec_dais[j]; |
| 776 | struct snd_soc_dai_driver *drv = dai->driver; |
| 777 | |
| 778 | if (drv->ops->digital_mute && dai->playback_active) |
| 779 | drv->ops->digital_mute(dai, 0); |
| 780 | } |
| 781 | } |
| 782 | |
| 783 | for (i = 0; i < card->num_rtd; i++) { |
| 784 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 785 | |
| 786 | if (card->rtd[i].dai_link->ignore_suspend) |
| 787 | continue; |
| 788 | |
| 789 | if (cpu_dai->driver->resume && !cpu_dai->driver->bus_control) |
| 790 | cpu_dai->driver->resume(cpu_dai); |
| 791 | } |
| 792 | |
| 793 | if (card->resume_post) |
| 794 | card->resume_post(card); |
| 795 | |
| 796 | dev_dbg(card->dev, "ASoC: resume work completed\n"); |
| 797 | |
| 798 | /* userspace can access us now we are back as we were before */ |
| 799 | snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); |
| 800 | |
| 801 | /* Recheck all endpoints too, their state is affected by suspend */ |
| 802 | dapm_mark_endpoints_dirty(card); |
| 803 | snd_soc_dapm_sync(&card->dapm); |
| 804 | } |
| 805 | |
| 806 | /* powers up audio subsystem after a suspend */ |
| 807 | int snd_soc_resume(struct device *dev) |
| 808 | { |
| 809 | struct snd_soc_card *card = dev_get_drvdata(dev); |
| 810 | bool bus_control = false; |
| 811 | int i; |
| 812 | |
| 813 | /* If the card is not initialized yet there is nothing to do */ |
| 814 | if (!card->instantiated) |
| 815 | return 0; |
| 816 | |
| 817 | /* activate pins from sleep state */ |
| 818 | for (i = 0; i < card->num_rtd; i++) { |
| 819 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 820 | struct snd_soc_dai **codec_dais = rtd->codec_dais; |
| 821 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 822 | int j; |
| 823 | |
| 824 | if (cpu_dai->active) |
| 825 | pinctrl_pm_select_default_state(cpu_dai->dev); |
| 826 | |
| 827 | for (j = 0; j < rtd->num_codecs; j++) { |
| 828 | struct snd_soc_dai *codec_dai = codec_dais[j]; |
| 829 | if (codec_dai->active) |
| 830 | pinctrl_pm_select_default_state(codec_dai->dev); |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | /* |
| 835 | * DAIs that also act as the control bus master might have other drivers |
| 836 | * hanging off them so need to resume immediately. Other drivers don't |
| 837 | * have that problem and may take a substantial amount of time to resume |
| 838 | * due to I/O costs and anti-pop so handle them out of line. |
| 839 | */ |
| 840 | for (i = 0; i < card->num_rtd; i++) { |
| 841 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 842 | bus_control |= cpu_dai->driver->bus_control; |
| 843 | } |
| 844 | if (bus_control) { |
| 845 | dev_dbg(dev, "ASoC: Resuming control bus master immediately\n"); |
| 846 | soc_resume_deferred(&card->deferred_resume_work); |
| 847 | } else { |
| 848 | dev_dbg(dev, "ASoC: Scheduling resume work\n"); |
| 849 | if (!schedule_work(&card->deferred_resume_work)) |
| 850 | dev_err(dev, "ASoC: resume work item may be lost\n"); |
| 851 | } |
| 852 | |
| 853 | return 0; |
| 854 | } |
| 855 | EXPORT_SYMBOL_GPL(snd_soc_resume); |
| 856 | #else |
| 857 | #define snd_soc_suspend NULL |
| 858 | #define snd_soc_resume NULL |
| 859 | #endif |
| 860 | |
| 861 | static const struct snd_soc_dai_ops null_dai_ops = { |
| 862 | }; |
| 863 | |
| 864 | static struct snd_soc_component *soc_find_component( |
| 865 | const struct device_node *of_node, const char *name) |
| 866 | { |
| 867 | struct snd_soc_component *component; |
| 868 | |
| 869 | lockdep_assert_held(&client_mutex); |
| 870 | |
| 871 | list_for_each_entry(component, &component_list, list) { |
| 872 | if (of_node) { |
| 873 | if (component->dev->of_node == of_node) |
| 874 | return component; |
| 875 | } else if (strcmp(component->name, name) == 0) { |
| 876 | return component; |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | return NULL; |
| 881 | } |
| 882 | |
| 883 | static struct snd_soc_dai *snd_soc_find_dai( |
| 884 | const struct snd_soc_dai_link_component *dlc) |
| 885 | { |
| 886 | struct snd_soc_component *component; |
| 887 | struct snd_soc_dai *dai; |
| 888 | struct device_node *component_of_node; |
| 889 | |
| 890 | lockdep_assert_held(&client_mutex); |
| 891 | |
| 892 | /* Find CPU DAI from registered DAIs*/ |
| 893 | list_for_each_entry(component, &component_list, list) { |
| 894 | component_of_node = component->dev->of_node; |
| 895 | if (!component_of_node && component->dev->parent) |
| 896 | component_of_node = component->dev->parent->of_node; |
| 897 | |
| 898 | if (dlc->of_node && component_of_node != dlc->of_node) |
| 899 | continue; |
| 900 | if (dlc->name && strcmp(component->name, dlc->name)) |
| 901 | continue; |
| 902 | list_for_each_entry(dai, &component->dai_list, list) { |
| 903 | if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)) |
| 904 | continue; |
| 905 | |
| 906 | return dai; |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | return NULL; |
| 911 | } |
| 912 | |
| 913 | static int soc_bind_dai_link(struct snd_soc_card *card, int num) |
| 914 | { |
| 915 | struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| 916 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 917 | struct snd_soc_dai_link_component *codecs = dai_link->codecs; |
| 918 | struct snd_soc_dai_link_component cpu_dai_component; |
| 919 | struct snd_soc_dai **codec_dais = rtd->codec_dais; |
| 920 | struct snd_soc_platform *platform; |
| 921 | const char *platform_name; |
| 922 | int i; |
| 923 | |
| 924 | dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num); |
| 925 | |
| 926 | cpu_dai_component.name = dai_link->cpu_name; |
| 927 | cpu_dai_component.of_node = dai_link->cpu_of_node; |
| 928 | cpu_dai_component.dai_name = dai_link->cpu_dai_name; |
| 929 | rtd->cpu_dai = snd_soc_find_dai(&cpu_dai_component); |
| 930 | if (!rtd->cpu_dai) { |
| 931 | dev_err(card->dev, "ASoC: CPU DAI %s not registered\n", |
| 932 | dai_link->cpu_dai_name); |
| 933 | return -EPROBE_DEFER; |
| 934 | } |
| 935 | |
| 936 | rtd->num_codecs = dai_link->num_codecs; |
| 937 | |
| 938 | /* Find CODEC from registered CODECs */ |
| 939 | for (i = 0; i < rtd->num_codecs; i++) { |
| 940 | codec_dais[i] = snd_soc_find_dai(&codecs[i]); |
| 941 | if (!codec_dais[i]) { |
| 942 | dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", |
| 943 | codecs[i].dai_name); |
| 944 | return -EPROBE_DEFER; |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | /* Single codec links expect codec and codec_dai in runtime data */ |
| 949 | rtd->codec_dai = codec_dais[0]; |
| 950 | rtd->codec = rtd->codec_dai->codec; |
| 951 | |
| 952 | /* if there's no platform we match on the empty platform */ |
| 953 | platform_name = dai_link->platform_name; |
| 954 | if (!platform_name && !dai_link->platform_of_node) |
| 955 | platform_name = "snd-soc-dummy"; |
| 956 | |
| 957 | /* find one from the set of registered platforms */ |
| 958 | list_for_each_entry(platform, &platform_list, list) { |
| 959 | if (dai_link->platform_of_node) { |
| 960 | if (platform->dev->of_node != |
| 961 | dai_link->platform_of_node) |
| 962 | continue; |
| 963 | } else { |
| 964 | if (strcmp(platform->component.name, platform_name)) |
| 965 | continue; |
| 966 | } |
| 967 | |
| 968 | rtd->platform = platform; |
| 969 | } |
| 970 | if (!rtd->platform) { |
| 971 | dev_err(card->dev, "ASoC: platform %s not registered\n", |
| 972 | dai_link->platform_name); |
| 973 | return -EPROBE_DEFER; |
| 974 | } |
| 975 | |
| 976 | card->num_rtd++; |
| 977 | |
| 978 | return 0; |
| 979 | } |
| 980 | |
| 981 | static void soc_remove_component(struct snd_soc_component *component) |
| 982 | { |
| 983 | if (!component->card) |
| 984 | return; |
| 985 | |
| 986 | /* This is a HACK and will be removed soon */ |
| 987 | if (component->codec) |
| 988 | list_del(&component->codec->card_list); |
| 989 | |
| 990 | if (component->remove) |
| 991 | component->remove(component); |
| 992 | |
| 993 | snd_soc_dapm_free(snd_soc_component_get_dapm(component)); |
| 994 | |
| 995 | soc_cleanup_component_debugfs(component); |
| 996 | component->card = NULL; |
| 997 | module_put(component->dev->driver->owner); |
| 998 | } |
| 999 | |
| 1000 | static void soc_remove_dai(struct snd_soc_dai *dai, int order) |
| 1001 | { |
| 1002 | int err; |
| 1003 | |
| 1004 | if (dai && dai->probed && |
| 1005 | dai->driver->remove_order == order) { |
| 1006 | if (dai->driver->remove) { |
| 1007 | err = dai->driver->remove(dai); |
| 1008 | if (err < 0) |
| 1009 | dev_err(dai->dev, |
| 1010 | "ASoC: failed to remove %s: %d\n", |
| 1011 | dai->name, err); |
| 1012 | } |
| 1013 | dai->probed = 0; |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order) |
| 1018 | { |
| 1019 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1020 | int i; |
| 1021 | |
| 1022 | /* unregister the rtd device */ |
| 1023 | if (rtd->dev_registered) { |
| 1024 | device_unregister(rtd->dev); |
| 1025 | rtd->dev_registered = 0; |
| 1026 | } |
| 1027 | |
| 1028 | /* remove the CODEC DAI */ |
| 1029 | for (i = 0; i < rtd->num_codecs; i++) |
| 1030 | soc_remove_dai(rtd->codec_dais[i], order); |
| 1031 | |
| 1032 | soc_remove_dai(rtd->cpu_dai, order); |
| 1033 | } |
| 1034 | |
| 1035 | static void soc_remove_link_components(struct snd_soc_card *card, int num, |
| 1036 | int order) |
| 1037 | { |
| 1038 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1039 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1040 | struct snd_soc_platform *platform = rtd->platform; |
| 1041 | struct snd_soc_component *component; |
| 1042 | int i; |
| 1043 | |
| 1044 | /* remove the platform */ |
| 1045 | if (platform && platform->component.driver->remove_order == order) |
| 1046 | soc_remove_component(&platform->component); |
| 1047 | |
| 1048 | /* remove the CODEC-side CODEC */ |
| 1049 | for (i = 0; i < rtd->num_codecs; i++) { |
| 1050 | component = rtd->codec_dais[i]->component; |
| 1051 | if (component->driver->remove_order == order) |
| 1052 | soc_remove_component(component); |
| 1053 | } |
| 1054 | |
| 1055 | /* remove any CPU-side CODEC */ |
| 1056 | if (cpu_dai) { |
| 1057 | if (cpu_dai->component->driver->remove_order == order) |
| 1058 | soc_remove_component(cpu_dai->component); |
| 1059 | } |
| 1060 | } |
| 1061 | |
| 1062 | static void soc_remove_dai_links(struct snd_soc_card *card) |
| 1063 | { |
| 1064 | int dai, order; |
| 1065 | |
| 1066 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1067 | order++) { |
| 1068 | for (dai = 0; dai < card->num_rtd; dai++) |
| 1069 | soc_remove_link_dais(card, dai, order); |
| 1070 | } |
| 1071 | |
| 1072 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1073 | order++) { |
| 1074 | for (dai = 0; dai < card->num_rtd; dai++) |
| 1075 | soc_remove_link_components(card, dai, order); |
| 1076 | } |
| 1077 | |
| 1078 | card->num_rtd = 0; |
| 1079 | } |
| 1080 | |
| 1081 | static void soc_set_name_prefix(struct snd_soc_card *card, |
| 1082 | struct snd_soc_component *component) |
| 1083 | { |
| 1084 | int i; |
| 1085 | |
| 1086 | if (card->codec_conf == NULL) |
| 1087 | return; |
| 1088 | |
| 1089 | for (i = 0; i < card->num_configs; i++) { |
| 1090 | struct snd_soc_codec_conf *map = &card->codec_conf[i]; |
| 1091 | if (map->of_node && component->dev->of_node != map->of_node) |
| 1092 | continue; |
| 1093 | if (map->dev_name && strcmp(component->name, map->dev_name)) |
| 1094 | continue; |
| 1095 | component->name_prefix = map->name_prefix; |
| 1096 | break; |
| 1097 | } |
| 1098 | } |
| 1099 | |
| 1100 | static int soc_probe_component(struct snd_soc_card *card, |
| 1101 | struct snd_soc_component *component) |
| 1102 | { |
| 1103 | struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); |
| 1104 | struct snd_soc_dai *dai; |
| 1105 | int ret; |
| 1106 | |
| 1107 | if (!strcmp(component->name, "snd-soc-dummy")) |
| 1108 | return 0; |
| 1109 | |
| 1110 | if (component->card) { |
| 1111 | if (component->card != card) { |
| 1112 | dev_err(component->dev, |
| 1113 | "Trying to bind component to card \"%s\" but is already bound to card \"%s\"\n", |
| 1114 | card->name, component->card->name); |
| 1115 | return -ENODEV; |
| 1116 | } |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | if (!try_module_get(component->dev->driver->owner)) |
| 1121 | return -ENODEV; |
| 1122 | |
| 1123 | component->card = card; |
| 1124 | dapm->card = card; |
| 1125 | soc_set_name_prefix(card, component); |
| 1126 | |
| 1127 | soc_init_component_debugfs(component); |
| 1128 | |
| 1129 | if (component->dapm_widgets) { |
| 1130 | ret = snd_soc_dapm_new_controls(dapm, component->dapm_widgets, |
| 1131 | component->num_dapm_widgets); |
| 1132 | |
| 1133 | if (ret != 0) { |
| 1134 | dev_err(component->dev, |
| 1135 | "Failed to create new controls %d\n", ret); |
| 1136 | goto err_probe; |
| 1137 | } |
| 1138 | } |
| 1139 | |
| 1140 | list_for_each_entry(dai, &component->dai_list, list) { |
| 1141 | ret = snd_soc_dapm_new_dai_widgets(dapm, dai); |
| 1142 | if (ret != 0) { |
| 1143 | dev_err(component->dev, |
| 1144 | "Failed to create DAI widgets %d\n", ret); |
| 1145 | goto err_probe; |
| 1146 | } |
| 1147 | } |
| 1148 | |
| 1149 | if (component->probe) { |
| 1150 | ret = component->probe(component); |
| 1151 | if (ret < 0) { |
| 1152 | dev_err(component->dev, |
| 1153 | "ASoC: failed to probe component %d\n", ret); |
| 1154 | goto err_probe; |
| 1155 | } |
| 1156 | |
| 1157 | WARN(dapm->idle_bias_off && |
| 1158 | dapm->bias_level != SND_SOC_BIAS_OFF, |
| 1159 | "codec %s can not start from non-off bias with idle_bias_off==1\n", |
| 1160 | component->name); |
| 1161 | } |
| 1162 | |
| 1163 | if (component->controls) |
| 1164 | snd_soc_add_component_controls(component, component->controls, |
| 1165 | component->num_controls); |
| 1166 | if (component->dapm_routes) |
| 1167 | snd_soc_dapm_add_routes(dapm, component->dapm_routes, |
| 1168 | component->num_dapm_routes); |
| 1169 | |
| 1170 | list_add(&dapm->list, &card->dapm_list); |
| 1171 | |
| 1172 | /* This is a HACK and will be removed soon */ |
| 1173 | if (component->codec) |
| 1174 | list_add(&component->codec->card_list, &card->codec_dev_list); |
| 1175 | |
| 1176 | return 0; |
| 1177 | |
| 1178 | err_probe: |
| 1179 | soc_cleanup_component_debugfs(component); |
| 1180 | component->card = NULL; |
| 1181 | module_put(component->dev->driver->owner); |
| 1182 | |
| 1183 | return ret; |
| 1184 | } |
| 1185 | |
| 1186 | static void rtd_release(struct device *dev) |
| 1187 | { |
| 1188 | kfree(dev); |
| 1189 | } |
| 1190 | |
| 1191 | static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd, |
| 1192 | const char *name) |
| 1193 | { |
| 1194 | int ret = 0; |
| 1195 | |
| 1196 | /* register the rtd device */ |
| 1197 | rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
| 1198 | if (!rtd->dev) |
| 1199 | return -ENOMEM; |
| 1200 | device_initialize(rtd->dev); |
| 1201 | rtd->dev->parent = rtd->card->dev; |
| 1202 | rtd->dev->release = rtd_release; |
| 1203 | rtd->dev->groups = soc_dev_attr_groups; |
| 1204 | dev_set_name(rtd->dev, "%s", name); |
| 1205 | dev_set_drvdata(rtd->dev, rtd); |
| 1206 | mutex_init(&rtd->pcm_mutex); |
| 1207 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients); |
| 1208 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients); |
| 1209 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients); |
| 1210 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients); |
| 1211 | ret = device_add(rtd->dev); |
| 1212 | if (ret < 0) { |
| 1213 | /* calling put_device() here to free the rtd->dev */ |
| 1214 | put_device(rtd->dev); |
| 1215 | dev_err(rtd->card->dev, |
| 1216 | "ASoC: failed to register runtime device: %d\n", ret); |
| 1217 | return ret; |
| 1218 | } |
| 1219 | rtd->dev_registered = 1; |
| 1220 | return 0; |
| 1221 | } |
| 1222 | |
| 1223 | static int soc_probe_link_components(struct snd_soc_card *card, int num, |
| 1224 | int order) |
| 1225 | { |
| 1226 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1227 | struct snd_soc_platform *platform = rtd->platform; |
| 1228 | struct snd_soc_component *component; |
| 1229 | int i, ret; |
| 1230 | |
| 1231 | /* probe the CPU-side component, if it is a CODEC */ |
| 1232 | component = rtd->cpu_dai->component; |
| 1233 | if (component->driver->probe_order == order) { |
| 1234 | ret = soc_probe_component(card, component); |
| 1235 | if (ret < 0) |
| 1236 | return ret; |
| 1237 | } |
| 1238 | |
| 1239 | /* probe the CODEC-side components */ |
| 1240 | for (i = 0; i < rtd->num_codecs; i++) { |
| 1241 | component = rtd->codec_dais[i]->component; |
| 1242 | if (component->driver->probe_order == order) { |
| 1243 | ret = soc_probe_component(card, component); |
| 1244 | if (ret < 0) |
| 1245 | return ret; |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | /* probe the platform */ |
| 1250 | if (platform->component.driver->probe_order == order) { |
| 1251 | ret = soc_probe_component(card, &platform->component); |
| 1252 | if (ret < 0) |
| 1253 | return ret; |
| 1254 | } |
| 1255 | |
| 1256 | return 0; |
| 1257 | } |
| 1258 | |
| 1259 | static int soc_probe_dai(struct snd_soc_dai *dai, int order) |
| 1260 | { |
| 1261 | int ret; |
| 1262 | |
| 1263 | if (!dai->probed && dai->driver->probe_order == order) { |
| 1264 | if (dai->driver->probe) { |
| 1265 | ret = dai->driver->probe(dai); |
| 1266 | if (ret < 0) { |
| 1267 | dev_err(dai->dev, |
| 1268 | "ASoC: failed to probe DAI %s: %d\n", |
| 1269 | dai->name, ret); |
| 1270 | return ret; |
| 1271 | } |
| 1272 | } |
| 1273 | |
| 1274 | dai->probed = 1; |
| 1275 | } |
| 1276 | |
| 1277 | return 0; |
| 1278 | } |
| 1279 | |
| 1280 | static int soc_link_dai_widgets(struct snd_soc_card *card, |
| 1281 | struct snd_soc_dai_link *dai_link, |
| 1282 | struct snd_soc_pcm_runtime *rtd) |
| 1283 | { |
| 1284 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1285 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 1286 | struct snd_soc_dapm_widget *play_w, *capture_w; |
| 1287 | int ret; |
| 1288 | |
| 1289 | if (rtd->num_codecs > 1) |
| 1290 | dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n"); |
| 1291 | |
| 1292 | /* link the DAI widgets */ |
| 1293 | play_w = codec_dai->playback_widget; |
| 1294 | capture_w = cpu_dai->capture_widget; |
| 1295 | if (play_w && capture_w) { |
| 1296 | ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| 1297 | dai_link->num_params, capture_w, |
| 1298 | play_w); |
| 1299 | if (ret != 0) { |
| 1300 | dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| 1301 | play_w->name, capture_w->name, ret); |
| 1302 | return ret; |
| 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | play_w = cpu_dai->playback_widget; |
| 1307 | capture_w = codec_dai->capture_widget; |
| 1308 | if (play_w && capture_w) { |
| 1309 | ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| 1310 | dai_link->num_params, capture_w, |
| 1311 | play_w); |
| 1312 | if (ret != 0) { |
| 1313 | dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| 1314 | play_w->name, capture_w->name, ret); |
| 1315 | return ret; |
| 1316 | } |
| 1317 | } |
| 1318 | |
| 1319 | return 0; |
| 1320 | } |
| 1321 | |
| 1322 | static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) |
| 1323 | { |
| 1324 | struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| 1325 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1326 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1327 | int i, ret; |
| 1328 | |
| 1329 | dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", |
| 1330 | card->name, num, order); |
| 1331 | |
| 1332 | /* set default power off timeout */ |
| 1333 | rtd->pmdown_time = pmdown_time; |
| 1334 | |
| 1335 | ret = soc_probe_dai(cpu_dai, order); |
| 1336 | if (ret) |
| 1337 | return ret; |
| 1338 | |
| 1339 | /* probe the CODEC DAI */ |
| 1340 | for (i = 0; i < rtd->num_codecs; i++) { |
| 1341 | ret = soc_probe_dai(rtd->codec_dais[i], order); |
| 1342 | if (ret) |
| 1343 | return ret; |
| 1344 | } |
| 1345 | |
| 1346 | /* complete DAI probe during last probe */ |
| 1347 | if (order != SND_SOC_COMP_ORDER_LAST) |
| 1348 | return 0; |
| 1349 | |
| 1350 | /* do machine specific initialization */ |
| 1351 | if (dai_link->init) { |
| 1352 | ret = dai_link->init(rtd); |
| 1353 | if (ret < 0) { |
| 1354 | dev_err(card->dev, "ASoC: failed to init %s: %d\n", |
| 1355 | dai_link->name, ret); |
| 1356 | return ret; |
| 1357 | } |
| 1358 | } |
| 1359 | |
| 1360 | if (dai_link->dai_fmt) |
| 1361 | snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt); |
| 1362 | |
| 1363 | ret = soc_post_component_init(rtd, dai_link->name); |
| 1364 | if (ret) |
| 1365 | return ret; |
| 1366 | |
| 1367 | #ifdef CONFIG_DEBUG_FS |
| 1368 | /* add DPCM sysfs entries */ |
| 1369 | if (dai_link->dynamic) |
| 1370 | soc_dpcm_debugfs_add(rtd); |
| 1371 | #endif |
| 1372 | |
| 1373 | if (cpu_dai->driver->compress_dai) { |
| 1374 | /*create compress_device"*/ |
| 1375 | ret = soc_new_compress(rtd, num); |
| 1376 | if (ret < 0) { |
| 1377 | dev_err(card->dev, "ASoC: can't create compress %s\n", |
| 1378 | dai_link->stream_name); |
| 1379 | return ret; |
| 1380 | } |
| 1381 | } else { |
| 1382 | |
| 1383 | if (!dai_link->params) { |
| 1384 | /* create the pcm */ |
| 1385 | ret = soc_new_pcm(rtd, num); |
| 1386 | if (ret < 0) { |
| 1387 | dev_err(card->dev, "ASoC: can't create pcm %s :%d\n", |
| 1388 | dai_link->stream_name, ret); |
| 1389 | return ret; |
| 1390 | } |
| 1391 | } else { |
| 1392 | INIT_DELAYED_WORK(&rtd->delayed_work, |
| 1393 | codec2codec_close_delayed_work); |
| 1394 | |
| 1395 | /* link the DAI widgets */ |
| 1396 | ret = soc_link_dai_widgets(card, dai_link, rtd); |
| 1397 | if (ret) |
| 1398 | return ret; |
| 1399 | } |
| 1400 | } |
| 1401 | |
| 1402 | return 0; |
| 1403 | } |
| 1404 | |
| 1405 | static int soc_bind_aux_dev(struct snd_soc_card *card, int num) |
| 1406 | { |
| 1407 | struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; |
| 1408 | struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| 1409 | const char *name = aux_dev->codec_name; |
| 1410 | |
| 1411 | rtd->component = soc_find_component(aux_dev->codec_of_node, name); |
| 1412 | if (!rtd->component) { |
| 1413 | if (aux_dev->codec_of_node) |
| 1414 | name = of_node_full_name(aux_dev->codec_of_node); |
| 1415 | |
| 1416 | dev_err(card->dev, "ASoC: %s not registered\n", name); |
| 1417 | return -EPROBE_DEFER; |
| 1418 | } |
| 1419 | |
| 1420 | /* |
| 1421 | * Some places still reference rtd->codec, so we have to keep that |
| 1422 | * initialized if the component is a CODEC. Once all those references |
| 1423 | * have been removed, this code can be removed as well. |
| 1424 | */ |
| 1425 | rtd->codec = rtd->component->codec; |
| 1426 | |
| 1427 | return 0; |
| 1428 | } |
| 1429 | |
| 1430 | static int soc_probe_aux_dev(struct snd_soc_card *card, int num) |
| 1431 | { |
| 1432 | struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; |
| 1433 | struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| 1434 | int ret; |
| 1435 | |
| 1436 | ret = soc_probe_component(card, rtd->component); |
| 1437 | if (ret < 0) |
| 1438 | return ret; |
| 1439 | |
| 1440 | /* do machine specific initialization */ |
| 1441 | if (aux_dev->init) { |
| 1442 | ret = aux_dev->init(rtd->component); |
| 1443 | if (ret < 0) { |
| 1444 | dev_err(card->dev, "ASoC: failed to init %s: %d\n", |
| 1445 | aux_dev->name, ret); |
| 1446 | return ret; |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | return soc_post_component_init(rtd, aux_dev->name); |
| 1451 | } |
| 1452 | |
| 1453 | static void soc_remove_aux_dev(struct snd_soc_card *card, int num) |
| 1454 | { |
| 1455 | struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; |
| 1456 | struct snd_soc_component *component = rtd->component; |
| 1457 | |
| 1458 | /* unregister the rtd device */ |
| 1459 | if (rtd->dev_registered) { |
| 1460 | device_unregister(rtd->dev); |
| 1461 | rtd->dev_registered = 0; |
| 1462 | } |
| 1463 | |
| 1464 | if (component) |
| 1465 | soc_remove_component(component); |
| 1466 | } |
| 1467 | |
| 1468 | static int snd_soc_init_codec_cache(struct snd_soc_codec *codec) |
| 1469 | { |
| 1470 | int ret; |
| 1471 | |
| 1472 | if (codec->cache_init) |
| 1473 | return 0; |
| 1474 | |
| 1475 | ret = snd_soc_cache_init(codec); |
| 1476 | if (ret < 0) { |
| 1477 | dev_err(codec->dev, |
| 1478 | "ASoC: Failed to set cache compression type: %d\n", |
| 1479 | ret); |
| 1480 | return ret; |
| 1481 | } |
| 1482 | codec->cache_init = 1; |
| 1483 | return 0; |
| 1484 | } |
| 1485 | |
| 1486 | /** |
| 1487 | * snd_soc_runtime_set_dai_fmt() - Change DAI link format for a ASoC runtime |
| 1488 | * @rtd: The runtime for which the DAI link format should be changed |
| 1489 | * @dai_fmt: The new DAI link format |
| 1490 | * |
| 1491 | * This function updates the DAI link format for all DAIs connected to the DAI |
| 1492 | * link for the specified runtime. |
| 1493 | * |
| 1494 | * Note: For setups with a static format set the dai_fmt field in the |
| 1495 | * corresponding snd_dai_link struct instead of using this function. |
| 1496 | * |
| 1497 | * Returns 0 on success, otherwise a negative error code. |
| 1498 | */ |
| 1499 | int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd, |
| 1500 | unsigned int dai_fmt) |
| 1501 | { |
| 1502 | struct snd_soc_dai **codec_dais = rtd->codec_dais; |
| 1503 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1504 | unsigned int i; |
| 1505 | int ret; |
| 1506 | |
| 1507 | for (i = 0; i < rtd->num_codecs; i++) { |
| 1508 | struct snd_soc_dai *codec_dai = codec_dais[i]; |
| 1509 | |
| 1510 | ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt); |
| 1511 | if (ret != 0 && ret != -ENOTSUPP) { |
| 1512 | dev_warn(codec_dai->dev, |
| 1513 | "ASoC: Failed to set DAI format: %d\n", ret); |
| 1514 | return ret; |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | /* Flip the polarity for the "CPU" end of a CODEC<->CODEC link */ |
| 1519 | if (cpu_dai->codec) { |
| 1520 | unsigned int inv_dai_fmt; |
| 1521 | |
| 1522 | inv_dai_fmt = dai_fmt & ~SND_SOC_DAIFMT_MASTER_MASK; |
| 1523 | switch (dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 1524 | case SND_SOC_DAIFMT_CBM_CFM: |
| 1525 | inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; |
| 1526 | break; |
| 1527 | case SND_SOC_DAIFMT_CBM_CFS: |
| 1528 | inv_dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; |
| 1529 | break; |
| 1530 | case SND_SOC_DAIFMT_CBS_CFM: |
| 1531 | inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; |
| 1532 | break; |
| 1533 | case SND_SOC_DAIFMT_CBS_CFS: |
| 1534 | inv_dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; |
| 1535 | break; |
| 1536 | } |
| 1537 | |
| 1538 | dai_fmt = inv_dai_fmt; |
| 1539 | } |
| 1540 | |
| 1541 | ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt); |
| 1542 | if (ret != 0 && ret != -ENOTSUPP) { |
| 1543 | dev_warn(cpu_dai->dev, |
| 1544 | "ASoC: Failed to set DAI format: %d\n", ret); |
| 1545 | return ret; |
| 1546 | } |
| 1547 | |
| 1548 | return 0; |
| 1549 | } |
| 1550 | EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt); |
| 1551 | |
| 1552 | static int snd_soc_instantiate_card(struct snd_soc_card *card) |
| 1553 | { |
| 1554 | struct snd_soc_codec *codec; |
| 1555 | int ret, i, order; |
| 1556 | |
| 1557 | mutex_lock(&client_mutex); |
| 1558 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); |
| 1559 | |
| 1560 | /* bind DAIs */ |
| 1561 | for (i = 0; i < card->num_links; i++) { |
| 1562 | ret = soc_bind_dai_link(card, i); |
| 1563 | if (ret != 0) |
| 1564 | goto base_error; |
| 1565 | } |
| 1566 | |
| 1567 | /* bind aux_devs too */ |
| 1568 | for (i = 0; i < card->num_aux_devs; i++) { |
| 1569 | ret = soc_bind_aux_dev(card, i); |
| 1570 | if (ret != 0) |
| 1571 | goto base_error; |
| 1572 | } |
| 1573 | |
| 1574 | /* initialize the register cache for each available codec */ |
| 1575 | list_for_each_entry(codec, &codec_list, list) { |
| 1576 | if (codec->cache_init) |
| 1577 | continue; |
| 1578 | ret = snd_soc_init_codec_cache(codec); |
| 1579 | if (ret < 0) |
| 1580 | goto base_error; |
| 1581 | } |
| 1582 | |
| 1583 | /* card bind complete so register a sound card */ |
| 1584 | ret = snd_card_new(card->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
| 1585 | card->owner, 0, &card->snd_card); |
| 1586 | if (ret < 0) { |
| 1587 | dev_err(card->dev, |
| 1588 | "ASoC: can't create sound card for card %s: %d\n", |
| 1589 | card->name, ret); |
| 1590 | goto base_error; |
| 1591 | } |
| 1592 | |
| 1593 | soc_init_card_debugfs(card); |
| 1594 | |
| 1595 | card->dapm.bias_level = SND_SOC_BIAS_OFF; |
| 1596 | card->dapm.dev = card->dev; |
| 1597 | card->dapm.card = card; |
| 1598 | list_add(&card->dapm.list, &card->dapm_list); |
| 1599 | |
| 1600 | #ifdef CONFIG_DEBUG_FS |
| 1601 | snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root); |
| 1602 | #endif |
| 1603 | |
| 1604 | #ifdef CONFIG_PM_SLEEP |
| 1605 | /* deferred resume work */ |
| 1606 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
| 1607 | #endif |
| 1608 | |
| 1609 | if (card->dapm_widgets) |
| 1610 | snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets, |
| 1611 | card->num_dapm_widgets); |
| 1612 | |
| 1613 | if (card->of_dapm_widgets) |
| 1614 | snd_soc_dapm_new_controls(&card->dapm, card->of_dapm_widgets, |
| 1615 | card->num_of_dapm_widgets); |
| 1616 | |
| 1617 | /* initialise the sound card only once */ |
| 1618 | if (card->probe) { |
| 1619 | ret = card->probe(card); |
| 1620 | if (ret < 0) |
| 1621 | goto card_probe_error; |
| 1622 | } |
| 1623 | |
| 1624 | /* probe all components used by DAI links on this card */ |
| 1625 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1626 | order++) { |
| 1627 | for (i = 0; i < card->num_links; i++) { |
| 1628 | ret = soc_probe_link_components(card, i, order); |
| 1629 | if (ret < 0) { |
| 1630 | dev_err(card->dev, |
| 1631 | "ASoC: failed to instantiate card %d\n", |
| 1632 | ret); |
| 1633 | goto probe_dai_err; |
| 1634 | } |
| 1635 | } |
| 1636 | } |
| 1637 | |
| 1638 | /* probe all DAI links on this card */ |
| 1639 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1640 | order++) { |
| 1641 | for (i = 0; i < card->num_links; i++) { |
| 1642 | ret = soc_probe_link_dais(card, i, order); |
| 1643 | if (ret < 0) { |
| 1644 | dev_err(card->dev, |
| 1645 | "ASoC: failed to instantiate card %d\n", |
| 1646 | ret); |
| 1647 | goto probe_dai_err; |
| 1648 | } |
| 1649 | } |
| 1650 | } |
| 1651 | |
| 1652 | for (i = 0; i < card->num_aux_devs; i++) { |
| 1653 | ret = soc_probe_aux_dev(card, i); |
| 1654 | if (ret < 0) { |
| 1655 | dev_err(card->dev, |
| 1656 | "ASoC: failed to add auxiliary devices %d\n", |
| 1657 | ret); |
| 1658 | goto probe_aux_dev_err; |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | snd_soc_dapm_link_dai_widgets(card); |
| 1663 | snd_soc_dapm_connect_dai_link_widgets(card); |
| 1664 | |
| 1665 | if (card->controls) |
| 1666 | snd_soc_add_card_controls(card, card->controls, card->num_controls); |
| 1667 | |
| 1668 | if (card->dapm_routes) |
| 1669 | snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes, |
| 1670 | card->num_dapm_routes); |
| 1671 | |
| 1672 | if (card->of_dapm_routes) |
| 1673 | snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes, |
| 1674 | card->num_of_dapm_routes); |
| 1675 | |
| 1676 | snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), |
| 1677 | "%s", card->name); |
| 1678 | snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), |
| 1679 | "%s", card->long_name ? card->long_name : card->name); |
| 1680 | snprintf(card->snd_card->driver, sizeof(card->snd_card->driver), |
| 1681 | "%s", card->driver_name ? card->driver_name : card->name); |
| 1682 | for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) { |
| 1683 | switch (card->snd_card->driver[i]) { |
| 1684 | case '_': |
| 1685 | case '-': |
| 1686 | case '\0': |
| 1687 | break; |
| 1688 | default: |
| 1689 | if (!isalnum(card->snd_card->driver[i])) |
| 1690 | card->snd_card->driver[i] = '_'; |
| 1691 | break; |
| 1692 | } |
| 1693 | } |
| 1694 | |
| 1695 | if (card->late_probe) { |
| 1696 | ret = card->late_probe(card); |
| 1697 | if (ret < 0) { |
| 1698 | dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n", |
| 1699 | card->name, ret); |
| 1700 | goto probe_aux_dev_err; |
| 1701 | } |
| 1702 | } |
| 1703 | |
| 1704 | snd_soc_dapm_new_widgets(card); |
| 1705 | |
| 1706 | ret = snd_card_register(card->snd_card); |
| 1707 | if (ret < 0) { |
| 1708 | dev_err(card->dev, "ASoC: failed to register soundcard %d\n", |
| 1709 | ret); |
| 1710 | goto probe_aux_dev_err; |
| 1711 | } |
| 1712 | |
| 1713 | card->instantiated = 1; |
| 1714 | snd_soc_dapm_sync(&card->dapm); |
| 1715 | mutex_unlock(&card->mutex); |
| 1716 | mutex_unlock(&client_mutex); |
| 1717 | |
| 1718 | return 0; |
| 1719 | |
| 1720 | probe_aux_dev_err: |
| 1721 | for (i = 0; i < card->num_aux_devs; i++) |
| 1722 | soc_remove_aux_dev(card, i); |
| 1723 | |
| 1724 | probe_dai_err: |
| 1725 | soc_remove_dai_links(card); |
| 1726 | |
| 1727 | card_probe_error: |
| 1728 | if (card->remove) |
| 1729 | card->remove(card); |
| 1730 | |
| 1731 | snd_soc_dapm_free(&card->dapm); |
| 1732 | soc_cleanup_card_debugfs(card); |
| 1733 | snd_card_free(card->snd_card); |
| 1734 | |
| 1735 | base_error: |
| 1736 | mutex_unlock(&card->mutex); |
| 1737 | mutex_unlock(&client_mutex); |
| 1738 | |
| 1739 | return ret; |
| 1740 | } |
| 1741 | |
| 1742 | /* probes a new socdev */ |
| 1743 | static int soc_probe(struct platform_device *pdev) |
| 1744 | { |
| 1745 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 1746 | |
| 1747 | /* |
| 1748 | * no card, so machine driver should be registering card |
| 1749 | * we should not be here in that case so ret error |
| 1750 | */ |
| 1751 | if (!card) |
| 1752 | return -EINVAL; |
| 1753 | |
| 1754 | dev_warn(&pdev->dev, |
| 1755 | "ASoC: machine %s should use snd_soc_register_card()\n", |
| 1756 | card->name); |
| 1757 | |
| 1758 | /* Bodge while we unpick instantiation */ |
| 1759 | card->dev = &pdev->dev; |
| 1760 | |
| 1761 | return snd_soc_register_card(card); |
| 1762 | } |
| 1763 | |
| 1764 | static int soc_cleanup_card_resources(struct snd_soc_card *card) |
| 1765 | { |
| 1766 | int i; |
| 1767 | |
| 1768 | /* make sure any delayed work runs */ |
| 1769 | for (i = 0; i < card->num_rtd; i++) { |
| 1770 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 1771 | flush_delayed_work(&rtd->delayed_work); |
| 1772 | } |
| 1773 | |
| 1774 | /* remove auxiliary devices */ |
| 1775 | for (i = 0; i < card->num_aux_devs; i++) |
| 1776 | soc_remove_aux_dev(card, i); |
| 1777 | |
| 1778 | /* remove and free each DAI */ |
| 1779 | soc_remove_dai_links(card); |
| 1780 | |
| 1781 | soc_cleanup_card_debugfs(card); |
| 1782 | |
| 1783 | /* remove the card */ |
| 1784 | if (card->remove) |
| 1785 | card->remove(card); |
| 1786 | |
| 1787 | snd_soc_dapm_free(&card->dapm); |
| 1788 | |
| 1789 | snd_card_free(card->snd_card); |
| 1790 | return 0; |
| 1791 | |
| 1792 | } |
| 1793 | |
| 1794 | /* removes a socdev */ |
| 1795 | static int soc_remove(struct platform_device *pdev) |
| 1796 | { |
| 1797 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 1798 | |
| 1799 | snd_soc_unregister_card(card); |
| 1800 | return 0; |
| 1801 | } |
| 1802 | |
| 1803 | int snd_soc_poweroff(struct device *dev) |
| 1804 | { |
| 1805 | struct snd_soc_card *card = dev_get_drvdata(dev); |
| 1806 | int i; |
| 1807 | |
| 1808 | if (!card->instantiated) |
| 1809 | return 0; |
| 1810 | |
| 1811 | /* Flush out pmdown_time work - we actually do want to run it |
| 1812 | * now, we're shutting down so no imminent restart. */ |
| 1813 | for (i = 0; i < card->num_rtd; i++) { |
| 1814 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 1815 | flush_delayed_work(&rtd->delayed_work); |
| 1816 | } |
| 1817 | |
| 1818 | snd_soc_dapm_shutdown(card); |
| 1819 | |
| 1820 | /* deactivate pins to sleep state */ |
| 1821 | for (i = 0; i < card->num_rtd; i++) { |
| 1822 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 1823 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1824 | int j; |
| 1825 | |
| 1826 | pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| 1827 | for (j = 0; j < rtd->num_codecs; j++) { |
| 1828 | struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; |
| 1829 | pinctrl_pm_select_sleep_state(codec_dai->dev); |
| 1830 | } |
| 1831 | } |
| 1832 | |
| 1833 | return 0; |
| 1834 | } |
| 1835 | EXPORT_SYMBOL_GPL(snd_soc_poweroff); |
| 1836 | |
| 1837 | const struct dev_pm_ops snd_soc_pm_ops = { |
| 1838 | .suspend = snd_soc_suspend, |
| 1839 | .resume = snd_soc_resume, |
| 1840 | .freeze = snd_soc_suspend, |
| 1841 | .thaw = snd_soc_resume, |
| 1842 | .poweroff = snd_soc_poweroff, |
| 1843 | .restore = snd_soc_resume, |
| 1844 | }; |
| 1845 | EXPORT_SYMBOL_GPL(snd_soc_pm_ops); |
| 1846 | |
| 1847 | /* ASoC platform driver */ |
| 1848 | static struct platform_driver soc_driver = { |
| 1849 | .driver = { |
| 1850 | .name = "soc-audio", |
| 1851 | .pm = &snd_soc_pm_ops, |
| 1852 | }, |
| 1853 | .probe = soc_probe, |
| 1854 | .remove = soc_remove, |
| 1855 | }; |
| 1856 | |
| 1857 | /** |
| 1858 | * snd_soc_cnew - create new control |
| 1859 | * @_template: control template |
| 1860 | * @data: control private data |
| 1861 | * @long_name: control long name |
| 1862 | * @prefix: control name prefix |
| 1863 | * |
| 1864 | * Create a new mixer control from a template control. |
| 1865 | * |
| 1866 | * Returns 0 for success, else error. |
| 1867 | */ |
| 1868 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, |
| 1869 | void *data, const char *long_name, |
| 1870 | const char *prefix) |
| 1871 | { |
| 1872 | struct snd_kcontrol_new template; |
| 1873 | struct snd_kcontrol *kcontrol; |
| 1874 | char *name = NULL; |
| 1875 | |
| 1876 | memcpy(&template, _template, sizeof(template)); |
| 1877 | template.index = 0; |
| 1878 | |
| 1879 | if (!long_name) |
| 1880 | long_name = template.name; |
| 1881 | |
| 1882 | if (prefix) { |
| 1883 | name = kasprintf(GFP_KERNEL, "%s %s", prefix, long_name); |
| 1884 | if (!name) |
| 1885 | return NULL; |
| 1886 | |
| 1887 | template.name = name; |
| 1888 | } else { |
| 1889 | template.name = long_name; |
| 1890 | } |
| 1891 | |
| 1892 | kcontrol = snd_ctl_new1(&template, data); |
| 1893 | |
| 1894 | kfree(name); |
| 1895 | |
| 1896 | return kcontrol; |
| 1897 | } |
| 1898 | EXPORT_SYMBOL_GPL(snd_soc_cnew); |
| 1899 | |
| 1900 | static int snd_soc_add_controls(struct snd_card *card, struct device *dev, |
| 1901 | const struct snd_kcontrol_new *controls, int num_controls, |
| 1902 | const char *prefix, void *data) |
| 1903 | { |
| 1904 | int err, i; |
| 1905 | |
| 1906 | for (i = 0; i < num_controls; i++) { |
| 1907 | const struct snd_kcontrol_new *control = &controls[i]; |
| 1908 | err = snd_ctl_add(card, snd_soc_cnew(control, data, |
| 1909 | control->name, prefix)); |
| 1910 | if (err < 0) { |
| 1911 | dev_err(dev, "ASoC: Failed to add %s: %d\n", |
| 1912 | control->name, err); |
| 1913 | return err; |
| 1914 | } |
| 1915 | } |
| 1916 | |
| 1917 | return 0; |
| 1918 | } |
| 1919 | |
| 1920 | struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card, |
| 1921 | const char *name) |
| 1922 | { |
| 1923 | struct snd_card *card = soc_card->snd_card; |
| 1924 | struct snd_kcontrol *kctl; |
| 1925 | |
| 1926 | if (unlikely(!name)) |
| 1927 | return NULL; |
| 1928 | |
| 1929 | list_for_each_entry(kctl, &card->controls, list) |
| 1930 | if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) |
| 1931 | return kctl; |
| 1932 | return NULL; |
| 1933 | } |
| 1934 | EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol); |
| 1935 | |
| 1936 | /** |
| 1937 | * snd_soc_add_component_controls - Add an array of controls to a component. |
| 1938 | * |
| 1939 | * @component: Component to add controls to |
| 1940 | * @controls: Array of controls to add |
| 1941 | * @num_controls: Number of elements in the array |
| 1942 | * |
| 1943 | * Return: 0 for success, else error. |
| 1944 | */ |
| 1945 | int snd_soc_add_component_controls(struct snd_soc_component *component, |
| 1946 | const struct snd_kcontrol_new *controls, unsigned int num_controls) |
| 1947 | { |
| 1948 | struct snd_card *card = component->card->snd_card; |
| 1949 | |
| 1950 | return snd_soc_add_controls(card, component->dev, controls, |
| 1951 | num_controls, component->name_prefix, component); |
| 1952 | } |
| 1953 | EXPORT_SYMBOL_GPL(snd_soc_add_component_controls); |
| 1954 | |
| 1955 | /** |
| 1956 | * snd_soc_add_codec_controls - add an array of controls to a codec. |
| 1957 | * Convenience function to add a list of controls. Many codecs were |
| 1958 | * duplicating this code. |
| 1959 | * |
| 1960 | * @codec: codec to add controls to |
| 1961 | * @controls: array of controls to add |
| 1962 | * @num_controls: number of elements in the array |
| 1963 | * |
| 1964 | * Return 0 for success, else error. |
| 1965 | */ |
| 1966 | int snd_soc_add_codec_controls(struct snd_soc_codec *codec, |
| 1967 | const struct snd_kcontrol_new *controls, unsigned int num_controls) |
| 1968 | { |
| 1969 | return snd_soc_add_component_controls(&codec->component, controls, |
| 1970 | num_controls); |
| 1971 | } |
| 1972 | EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls); |
| 1973 | |
| 1974 | /** |
| 1975 | * snd_soc_add_platform_controls - add an array of controls to a platform. |
| 1976 | * Convenience function to add a list of controls. |
| 1977 | * |
| 1978 | * @platform: platform to add controls to |
| 1979 | * @controls: array of controls to add |
| 1980 | * @num_controls: number of elements in the array |
| 1981 | * |
| 1982 | * Return 0 for success, else error. |
| 1983 | */ |
| 1984 | int snd_soc_add_platform_controls(struct snd_soc_platform *platform, |
| 1985 | const struct snd_kcontrol_new *controls, unsigned int num_controls) |
| 1986 | { |
| 1987 | return snd_soc_add_component_controls(&platform->component, controls, |
| 1988 | num_controls); |
| 1989 | } |
| 1990 | EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls); |
| 1991 | |
| 1992 | /** |
| 1993 | * snd_soc_add_card_controls - add an array of controls to a SoC card. |
| 1994 | * Convenience function to add a list of controls. |
| 1995 | * |
| 1996 | * @soc_card: SoC card to add controls to |
| 1997 | * @controls: array of controls to add |
| 1998 | * @num_controls: number of elements in the array |
| 1999 | * |
| 2000 | * Return 0 for success, else error. |
| 2001 | */ |
| 2002 | int snd_soc_add_card_controls(struct snd_soc_card *soc_card, |
| 2003 | const struct snd_kcontrol_new *controls, int num_controls) |
| 2004 | { |
| 2005 | struct snd_card *card = soc_card->snd_card; |
| 2006 | |
| 2007 | return snd_soc_add_controls(card, soc_card->dev, controls, num_controls, |
| 2008 | NULL, soc_card); |
| 2009 | } |
| 2010 | EXPORT_SYMBOL_GPL(snd_soc_add_card_controls); |
| 2011 | |
| 2012 | /** |
| 2013 | * snd_soc_add_dai_controls - add an array of controls to a DAI. |
| 2014 | * Convienience function to add a list of controls. |
| 2015 | * |
| 2016 | * @dai: DAI to add controls to |
| 2017 | * @controls: array of controls to add |
| 2018 | * @num_controls: number of elements in the array |
| 2019 | * |
| 2020 | * Return 0 for success, else error. |
| 2021 | */ |
| 2022 | int snd_soc_add_dai_controls(struct snd_soc_dai *dai, |
| 2023 | const struct snd_kcontrol_new *controls, int num_controls) |
| 2024 | { |
| 2025 | struct snd_card *card = dai->component->card->snd_card; |
| 2026 | |
| 2027 | return snd_soc_add_controls(card, dai->dev, controls, num_controls, |
| 2028 | NULL, dai); |
| 2029 | } |
| 2030 | EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls); |
| 2031 | |
| 2032 | /** |
| 2033 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. |
| 2034 | * @dai: DAI |
| 2035 | * @clk_id: DAI specific clock ID |
| 2036 | * @freq: new clock frequency in Hz |
| 2037 | * @dir: new clock direction - input/output. |
| 2038 | * |
| 2039 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. |
| 2040 | */ |
| 2041 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 2042 | unsigned int freq, int dir) |
| 2043 | { |
| 2044 | if (dai->driver && dai->driver->ops->set_sysclk) |
| 2045 | return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir); |
| 2046 | else if (dai->codec && dai->codec->driver->set_sysclk) |
| 2047 | return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0, |
| 2048 | freq, dir); |
| 2049 | else |
| 2050 | return -ENOTSUPP; |
| 2051 | } |
| 2052 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); |
| 2053 | |
| 2054 | /** |
| 2055 | * snd_soc_codec_set_sysclk - configure CODEC system or master clock. |
| 2056 | * @codec: CODEC |
| 2057 | * @clk_id: DAI specific clock ID |
| 2058 | * @source: Source for the clock |
| 2059 | * @freq: new clock frequency in Hz |
| 2060 | * @dir: new clock direction - input/output. |
| 2061 | * |
| 2062 | * Configures the CODEC master (MCLK) or system (SYSCLK) clocking. |
| 2063 | */ |
| 2064 | int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id, |
| 2065 | int source, unsigned int freq, int dir) |
| 2066 | { |
| 2067 | if (codec->driver->set_sysclk) |
| 2068 | return codec->driver->set_sysclk(codec, clk_id, source, |
| 2069 | freq, dir); |
| 2070 | else |
| 2071 | return -ENOTSUPP; |
| 2072 | } |
| 2073 | EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk); |
| 2074 | |
| 2075 | /** |
| 2076 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. |
| 2077 | * @dai: DAI |
| 2078 | * @div_id: DAI specific clock divider ID |
| 2079 | * @div: new clock divisor. |
| 2080 | * |
| 2081 | * Configures the clock dividers. This is used to derive the best DAI bit and |
| 2082 | * frame clocks from the system or master clock. It's best to set the DAI bit |
| 2083 | * and frame clocks as low as possible to save system power. |
| 2084 | */ |
| 2085 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, |
| 2086 | int div_id, int div) |
| 2087 | { |
| 2088 | if (dai->driver && dai->driver->ops->set_clkdiv) |
| 2089 | return dai->driver->ops->set_clkdiv(dai, div_id, div); |
| 2090 | else |
| 2091 | return -EINVAL; |
| 2092 | } |
| 2093 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); |
| 2094 | |
| 2095 | /** |
| 2096 | * snd_soc_dai_set_pll - configure DAI PLL. |
| 2097 | * @dai: DAI |
| 2098 | * @pll_id: DAI specific PLL ID |
| 2099 | * @source: DAI specific source for the PLL |
| 2100 | * @freq_in: PLL input clock frequency in Hz |
| 2101 | * @freq_out: requested PLL output clock frequency in Hz |
| 2102 | * |
| 2103 | * Configures and enables PLL to generate output clock based on input clock. |
| 2104 | */ |
| 2105 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, |
| 2106 | unsigned int freq_in, unsigned int freq_out) |
| 2107 | { |
| 2108 | if (dai->driver && dai->driver->ops->set_pll) |
| 2109 | return dai->driver->ops->set_pll(dai, pll_id, source, |
| 2110 | freq_in, freq_out); |
| 2111 | else if (dai->codec && dai->codec->driver->set_pll) |
| 2112 | return dai->codec->driver->set_pll(dai->codec, pll_id, source, |
| 2113 | freq_in, freq_out); |
| 2114 | else |
| 2115 | return -EINVAL; |
| 2116 | } |
| 2117 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); |
| 2118 | |
| 2119 | /* |
| 2120 | * snd_soc_codec_set_pll - configure codec PLL. |
| 2121 | * @codec: CODEC |
| 2122 | * @pll_id: DAI specific PLL ID |
| 2123 | * @source: DAI specific source for the PLL |
| 2124 | * @freq_in: PLL input clock frequency in Hz |
| 2125 | * @freq_out: requested PLL output clock frequency in Hz |
| 2126 | * |
| 2127 | * Configures and enables PLL to generate output clock based on input clock. |
| 2128 | */ |
| 2129 | int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source, |
| 2130 | unsigned int freq_in, unsigned int freq_out) |
| 2131 | { |
| 2132 | if (codec->driver->set_pll) |
| 2133 | return codec->driver->set_pll(codec, pll_id, source, |
| 2134 | freq_in, freq_out); |
| 2135 | else |
| 2136 | return -EINVAL; |
| 2137 | } |
| 2138 | EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll); |
| 2139 | |
| 2140 | /** |
| 2141 | * snd_soc_dai_set_bclk_ratio - configure BCLK to sample rate ratio. |
| 2142 | * @dai: DAI |
| 2143 | * @ratio: Ratio of BCLK to Sample rate. |
| 2144 | * |
| 2145 | * Configures the DAI for a preset BCLK to sample rate ratio. |
| 2146 | */ |
| 2147 | int snd_soc_dai_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) |
| 2148 | { |
| 2149 | if (dai->driver && dai->driver->ops->set_bclk_ratio) |
| 2150 | return dai->driver->ops->set_bclk_ratio(dai, ratio); |
| 2151 | else |
| 2152 | return -EINVAL; |
| 2153 | } |
| 2154 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_bclk_ratio); |
| 2155 | |
| 2156 | /** |
| 2157 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. |
| 2158 | * @dai: DAI |
| 2159 | * @fmt: SND_SOC_DAIFMT_ format value. |
| 2160 | * |
| 2161 | * Configures the DAI hardware format and clocking. |
| 2162 | */ |
| 2163 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 2164 | { |
| 2165 | if (dai->driver == NULL) |
| 2166 | return -EINVAL; |
| 2167 | if (dai->driver->ops->set_fmt == NULL) |
| 2168 | return -ENOTSUPP; |
| 2169 | return dai->driver->ops->set_fmt(dai, fmt); |
| 2170 | } |
| 2171 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); |
| 2172 | |
| 2173 | /** |
| 2174 | * snd_soc_xlate_tdm_slot - generate tx/rx slot mask. |
| 2175 | * @slots: Number of slots in use. |
| 2176 | * @tx_mask: bitmask representing active TX slots. |
| 2177 | * @rx_mask: bitmask representing active RX slots. |
| 2178 | * |
| 2179 | * Generates the TDM tx and rx slot default masks for DAI. |
| 2180 | */ |
| 2181 | static int snd_soc_xlate_tdm_slot_mask(unsigned int slots, |
| 2182 | unsigned int *tx_mask, |
| 2183 | unsigned int *rx_mask) |
| 2184 | { |
| 2185 | if (*tx_mask || *rx_mask) |
| 2186 | return 0; |
| 2187 | |
| 2188 | if (!slots) |
| 2189 | return -EINVAL; |
| 2190 | |
| 2191 | *tx_mask = (1 << slots) - 1; |
| 2192 | *rx_mask = (1 << slots) - 1; |
| 2193 | |
| 2194 | return 0; |
| 2195 | } |
| 2196 | |
| 2197 | /** |
| 2198 | * snd_soc_dai_set_tdm_slot() - Configures a DAI for TDM operation |
| 2199 | * @dai: The DAI to configure |
| 2200 | * @tx_mask: bitmask representing active TX slots. |
| 2201 | * @rx_mask: bitmask representing active RX slots. |
| 2202 | * @slots: Number of slots in use. |
| 2203 | * @slot_width: Width in bits for each slot. |
| 2204 | * |
| 2205 | * This function configures the specified DAI for TDM operation. @slot contains |
| 2206 | * the total number of slots of the TDM stream and @slot_with the width of each |
| 2207 | * slot in bit clock cycles. @tx_mask and @rx_mask are bitmasks specifying the |
| 2208 | * active slots of the TDM stream for the specified DAI, i.e. which slots the |
| 2209 | * DAI should write to or read from. If a bit is set the corresponding slot is |
| 2210 | * active, if a bit is cleared the corresponding slot is inactive. Bit 0 maps to |
| 2211 | * the first slot, bit 1 to the second slot and so on. The first active slot |
| 2212 | * maps to the first channel of the DAI, the second active slot to the second |
| 2213 | * channel and so on. |
| 2214 | * |
| 2215 | * TDM mode can be disabled by passing 0 for @slots. In this case @tx_mask, |
| 2216 | * @rx_mask and @slot_width will be ignored. |
| 2217 | * |
| 2218 | * Returns 0 on success, a negative error code otherwise. |
| 2219 | */ |
| 2220 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, |
| 2221 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
| 2222 | { |
| 2223 | if (dai->driver && dai->driver->ops->xlate_tdm_slot_mask) |
| 2224 | dai->driver->ops->xlate_tdm_slot_mask(slots, |
| 2225 | &tx_mask, &rx_mask); |
| 2226 | else |
| 2227 | snd_soc_xlate_tdm_slot_mask(slots, &tx_mask, &rx_mask); |
| 2228 | |
| 2229 | dai->tx_mask = tx_mask; |
| 2230 | dai->rx_mask = rx_mask; |
| 2231 | |
| 2232 | if (dai->driver && dai->driver->ops->set_tdm_slot) |
| 2233 | return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
| 2234 | slots, slot_width); |
| 2235 | else |
| 2236 | return -ENOTSUPP; |
| 2237 | } |
| 2238 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); |
| 2239 | |
| 2240 | /** |
| 2241 | * snd_soc_dai_set_channel_map - configure DAI audio channel map |
| 2242 | * @dai: DAI |
| 2243 | * @tx_num: how many TX channels |
| 2244 | * @tx_slot: pointer to an array which imply the TX slot number channel |
| 2245 | * 0~num-1 uses |
| 2246 | * @rx_num: how many RX channels |
| 2247 | * @rx_slot: pointer to an array which imply the RX slot number channel |
| 2248 | * 0~num-1 uses |
| 2249 | * |
| 2250 | * configure the relationship between channel number and TDM slot number. |
| 2251 | */ |
| 2252 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, |
| 2253 | unsigned int tx_num, unsigned int *tx_slot, |
| 2254 | unsigned int rx_num, unsigned int *rx_slot) |
| 2255 | { |
| 2256 | if (dai->driver && dai->driver->ops->set_channel_map) |
| 2257 | return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot, |
| 2258 | rx_num, rx_slot); |
| 2259 | else |
| 2260 | return -EINVAL; |
| 2261 | } |
| 2262 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); |
| 2263 | |
| 2264 | /** |
| 2265 | * snd_soc_dai_set_tristate - configure DAI system or master clock. |
| 2266 | * @dai: DAI |
| 2267 | * @tristate: tristate enable |
| 2268 | * |
| 2269 | * Tristates the DAI so that others can use it. |
| 2270 | */ |
| 2271 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) |
| 2272 | { |
| 2273 | if (dai->driver && dai->driver->ops->set_tristate) |
| 2274 | return dai->driver->ops->set_tristate(dai, tristate); |
| 2275 | else |
| 2276 | return -EINVAL; |
| 2277 | } |
| 2278 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); |
| 2279 | |
| 2280 | /** |
| 2281 | * snd_soc_dai_digital_mute - configure DAI system or master clock. |
| 2282 | * @dai: DAI |
| 2283 | * @mute: mute enable |
| 2284 | * @direction: stream to mute |
| 2285 | * |
| 2286 | * Mutes the DAI DAC. |
| 2287 | */ |
| 2288 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, |
| 2289 | int direction) |
| 2290 | { |
| 2291 | if (!dai->driver) |
| 2292 | return -ENOTSUPP; |
| 2293 | |
| 2294 | if (dai->driver->ops->mute_stream) |
| 2295 | return dai->driver->ops->mute_stream(dai, mute, direction); |
| 2296 | else if (direction == SNDRV_PCM_STREAM_PLAYBACK && |
| 2297 | dai->driver->ops->digital_mute) |
| 2298 | return dai->driver->ops->digital_mute(dai, mute); |
| 2299 | else |
| 2300 | return -ENOTSUPP; |
| 2301 | } |
| 2302 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); |
| 2303 | |
| 2304 | static int snd_soc_init_multicodec(struct snd_soc_card *card, |
| 2305 | struct snd_soc_dai_link *dai_link) |
| 2306 | { |
| 2307 | /* Legacy codec/codec_dai link is a single entry in multicodec */ |
| 2308 | if (dai_link->codec_name || dai_link->codec_of_node || |
| 2309 | dai_link->codec_dai_name) { |
| 2310 | dai_link->num_codecs = 1; |
| 2311 | |
| 2312 | dai_link->codecs = devm_kzalloc(card->dev, |
| 2313 | sizeof(struct snd_soc_dai_link_component), |
| 2314 | GFP_KERNEL); |
| 2315 | if (!dai_link->codecs) |
| 2316 | return -ENOMEM; |
| 2317 | |
| 2318 | dai_link->codecs[0].name = dai_link->codec_name; |
| 2319 | dai_link->codecs[0].of_node = dai_link->codec_of_node; |
| 2320 | dai_link->codecs[0].dai_name = dai_link->codec_dai_name; |
| 2321 | } |
| 2322 | |
| 2323 | if (!dai_link->codecs) { |
| 2324 | dev_err(card->dev, "ASoC: DAI link has no CODECs\n"); |
| 2325 | return -EINVAL; |
| 2326 | } |
| 2327 | |
| 2328 | return 0; |
| 2329 | } |
| 2330 | |
| 2331 | /** |
| 2332 | * snd_soc_register_card - Register a card with the ASoC core |
| 2333 | * |
| 2334 | * @card: Card to register |
| 2335 | * |
| 2336 | */ |
| 2337 | int snd_soc_register_card(struct snd_soc_card *card) |
| 2338 | { |
| 2339 | int i, j, ret; |
| 2340 | |
| 2341 | if (!card->name || !card->dev) |
| 2342 | return -EINVAL; |
| 2343 | |
| 2344 | for (i = 0; i < card->num_links; i++) { |
| 2345 | struct snd_soc_dai_link *link = &card->dai_link[i]; |
| 2346 | |
| 2347 | ret = snd_soc_init_multicodec(card, link); |
| 2348 | if (ret) { |
| 2349 | dev_err(card->dev, "ASoC: failed to init multicodec\n"); |
| 2350 | return ret; |
| 2351 | } |
| 2352 | |
| 2353 | for (j = 0; j < link->num_codecs; j++) { |
| 2354 | /* |
| 2355 | * Codec must be specified by 1 of name or OF node, |
| 2356 | * not both or neither. |
| 2357 | */ |
| 2358 | if (!!link->codecs[j].name == |
| 2359 | !!link->codecs[j].of_node) { |
| 2360 | dev_err(card->dev, "ASoC: Neither/both codec name/of_node are set for %s\n", |
| 2361 | link->name); |
| 2362 | return -EINVAL; |
| 2363 | } |
| 2364 | /* Codec DAI name must be specified */ |
| 2365 | if (!link->codecs[j].dai_name) { |
| 2366 | dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n", |
| 2367 | link->name); |
| 2368 | return -EINVAL; |
| 2369 | } |
| 2370 | } |
| 2371 | |
| 2372 | /* |
| 2373 | * Platform may be specified by either name or OF node, but |
| 2374 | * can be left unspecified, and a dummy platform will be used. |
| 2375 | */ |
| 2376 | if (link->platform_name && link->platform_of_node) { |
| 2377 | dev_err(card->dev, |
| 2378 | "ASoC: Both platform name/of_node are set for %s\n", |
| 2379 | link->name); |
| 2380 | return -EINVAL; |
| 2381 | } |
| 2382 | |
| 2383 | /* |
| 2384 | * CPU device may be specified by either name or OF node, but |
| 2385 | * can be left unspecified, and will be matched based on DAI |
| 2386 | * name alone.. |
| 2387 | */ |
| 2388 | if (link->cpu_name && link->cpu_of_node) { |
| 2389 | dev_err(card->dev, |
| 2390 | "ASoC: Neither/both cpu name/of_node are set for %s\n", |
| 2391 | link->name); |
| 2392 | return -EINVAL; |
| 2393 | } |
| 2394 | /* |
| 2395 | * At least one of CPU DAI name or CPU device name/node must be |
| 2396 | * specified |
| 2397 | */ |
| 2398 | if (!link->cpu_dai_name && |
| 2399 | !(link->cpu_name || link->cpu_of_node)) { |
| 2400 | dev_err(card->dev, |
| 2401 | "ASoC: Neither cpu_dai_name nor cpu_name/of_node are set for %s\n", |
| 2402 | link->name); |
| 2403 | return -EINVAL; |
| 2404 | } |
| 2405 | } |
| 2406 | |
| 2407 | dev_set_drvdata(card->dev, card); |
| 2408 | |
| 2409 | snd_soc_initialize_card_lists(card); |
| 2410 | |
| 2411 | card->rtd = devm_kzalloc(card->dev, |
| 2412 | sizeof(struct snd_soc_pcm_runtime) * |
| 2413 | (card->num_links + card->num_aux_devs), |
| 2414 | GFP_KERNEL); |
| 2415 | if (card->rtd == NULL) |
| 2416 | return -ENOMEM; |
| 2417 | card->num_rtd = 0; |
| 2418 | card->rtd_aux = &card->rtd[card->num_links]; |
| 2419 | |
| 2420 | for (i = 0; i < card->num_links; i++) { |
| 2421 | card->rtd[i].card = card; |
| 2422 | card->rtd[i].dai_link = &card->dai_link[i]; |
| 2423 | card->rtd[i].codec_dais = devm_kzalloc(card->dev, |
| 2424 | sizeof(struct snd_soc_dai *) * |
| 2425 | (card->rtd[i].dai_link->num_codecs), |
| 2426 | GFP_KERNEL); |
| 2427 | if (card->rtd[i].codec_dais == NULL) |
| 2428 | return -ENOMEM; |
| 2429 | } |
| 2430 | |
| 2431 | for (i = 0; i < card->num_aux_devs; i++) |
| 2432 | card->rtd_aux[i].card = card; |
| 2433 | |
| 2434 | INIT_LIST_HEAD(&card->dapm_dirty); |
| 2435 | INIT_LIST_HEAD(&card->dobj_list); |
| 2436 | card->instantiated = 0; |
| 2437 | mutex_init(&card->mutex); |
| 2438 | mutex_init(&card->dapm_mutex); |
| 2439 | |
| 2440 | ret = snd_soc_instantiate_card(card); |
| 2441 | if (ret != 0) |
| 2442 | return ret; |
| 2443 | |
| 2444 | /* deactivate pins to sleep state */ |
| 2445 | for (i = 0; i < card->num_rtd; i++) { |
| 2446 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 2447 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 2448 | int j; |
| 2449 | |
| 2450 | for (j = 0; j < rtd->num_codecs; j++) { |
| 2451 | struct snd_soc_dai *codec_dai = rtd->codec_dais[j]; |
| 2452 | if (!codec_dai->active) |
| 2453 | pinctrl_pm_select_sleep_state(codec_dai->dev); |
| 2454 | } |
| 2455 | |
| 2456 | if (!cpu_dai->active) |
| 2457 | pinctrl_pm_select_sleep_state(cpu_dai->dev); |
| 2458 | } |
| 2459 | |
| 2460 | return ret; |
| 2461 | } |
| 2462 | EXPORT_SYMBOL_GPL(snd_soc_register_card); |
| 2463 | |
| 2464 | /** |
| 2465 | * snd_soc_unregister_card - Unregister a card with the ASoC core |
| 2466 | * |
| 2467 | * @card: Card to unregister |
| 2468 | * |
| 2469 | */ |
| 2470 | int snd_soc_unregister_card(struct snd_soc_card *card) |
| 2471 | { |
| 2472 | if (card->instantiated) { |
| 2473 | card->instantiated = false; |
| 2474 | snd_soc_dapm_shutdown(card); |
| 2475 | soc_cleanup_card_resources(card); |
| 2476 | dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name); |
| 2477 | } |
| 2478 | |
| 2479 | return 0; |
| 2480 | } |
| 2481 | EXPORT_SYMBOL_GPL(snd_soc_unregister_card); |
| 2482 | |
| 2483 | /* |
| 2484 | * Simplify DAI link configuration by removing ".-1" from device names |
| 2485 | * and sanitizing names. |
| 2486 | */ |
| 2487 | static char *fmt_single_name(struct device *dev, int *id) |
| 2488 | { |
| 2489 | char *found, name[NAME_SIZE]; |
| 2490 | int id1, id2; |
| 2491 | |
| 2492 | if (dev_name(dev) == NULL) |
| 2493 | return NULL; |
| 2494 | |
| 2495 | strlcpy(name, dev_name(dev), NAME_SIZE); |
| 2496 | |
| 2497 | /* are we a "%s.%d" name (platform and SPI components) */ |
| 2498 | found = strstr(name, dev->driver->name); |
| 2499 | if (found) { |
| 2500 | /* get ID */ |
| 2501 | if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) { |
| 2502 | |
| 2503 | /* discard ID from name if ID == -1 */ |
| 2504 | if (*id == -1) |
| 2505 | found[strlen(dev->driver->name)] = '\0'; |
| 2506 | } |
| 2507 | |
| 2508 | } else { |
| 2509 | /* I2C component devices are named "bus-addr" */ |
| 2510 | if (sscanf(name, "%x-%x", &id1, &id2) == 2) { |
| 2511 | char tmp[NAME_SIZE]; |
| 2512 | |
| 2513 | /* create unique ID number from I2C addr and bus */ |
| 2514 | *id = ((id1 & 0xffff) << 16) + id2; |
| 2515 | |
| 2516 | /* sanitize component name for DAI link creation */ |
| 2517 | snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name); |
| 2518 | strlcpy(name, tmp, NAME_SIZE); |
| 2519 | } else |
| 2520 | *id = 0; |
| 2521 | } |
| 2522 | |
| 2523 | return kstrdup(name, GFP_KERNEL); |
| 2524 | } |
| 2525 | |
| 2526 | /* |
| 2527 | * Simplify DAI link naming for single devices with multiple DAIs by removing |
| 2528 | * any ".-1" and using the DAI name (instead of device name). |
| 2529 | */ |
| 2530 | static inline char *fmt_multiple_name(struct device *dev, |
| 2531 | struct snd_soc_dai_driver *dai_drv) |
| 2532 | { |
| 2533 | if (dai_drv->name == NULL) { |
| 2534 | dev_err(dev, |
| 2535 | "ASoC: error - multiple DAI %s registered with no name\n", |
| 2536 | dev_name(dev)); |
| 2537 | return NULL; |
| 2538 | } |
| 2539 | |
| 2540 | return kstrdup(dai_drv->name, GFP_KERNEL); |
| 2541 | } |
| 2542 | |
| 2543 | /** |
| 2544 | * snd_soc_unregister_dai - Unregister DAIs from the ASoC core |
| 2545 | * |
| 2546 | * @component: The component for which the DAIs should be unregistered |
| 2547 | */ |
| 2548 | static void snd_soc_unregister_dais(struct snd_soc_component *component) |
| 2549 | { |
| 2550 | struct snd_soc_dai *dai, *_dai; |
| 2551 | |
| 2552 | list_for_each_entry_safe(dai, _dai, &component->dai_list, list) { |
| 2553 | dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n", |
| 2554 | dai->name); |
| 2555 | list_del(&dai->list); |
| 2556 | kfree(dai->name); |
| 2557 | kfree(dai); |
| 2558 | } |
| 2559 | } |
| 2560 | |
| 2561 | /** |
| 2562 | * snd_soc_register_dais - Register a DAI with the ASoC core |
| 2563 | * |
| 2564 | * @component: The component the DAIs are registered for |
| 2565 | * @dai_drv: DAI driver to use for the DAIs |
| 2566 | * @count: Number of DAIs |
| 2567 | * @legacy_dai_naming: Use the legacy naming scheme and let the DAI inherit the |
| 2568 | * parent's name. |
| 2569 | */ |
| 2570 | static int snd_soc_register_dais(struct snd_soc_component *component, |
| 2571 | struct snd_soc_dai_driver *dai_drv, size_t count, |
| 2572 | bool legacy_dai_naming) |
| 2573 | { |
| 2574 | struct device *dev = component->dev; |
| 2575 | struct snd_soc_dai *dai; |
| 2576 | unsigned int i; |
| 2577 | int ret; |
| 2578 | |
| 2579 | dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count); |
| 2580 | |
| 2581 | component->dai_drv = dai_drv; |
| 2582 | component->num_dai = count; |
| 2583 | |
| 2584 | for (i = 0; i < count; i++) { |
| 2585 | |
| 2586 | dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); |
| 2587 | if (dai == NULL) { |
| 2588 | ret = -ENOMEM; |
| 2589 | goto err; |
| 2590 | } |
| 2591 | |
| 2592 | /* |
| 2593 | * Back in the old days when we still had component-less DAIs, |
| 2594 | * instead of having a static name, component-less DAIs would |
| 2595 | * inherit the name of the parent device so it is possible to |
| 2596 | * register multiple instances of the DAI. We still need to keep |
| 2597 | * the same naming style even though those DAIs are not |
| 2598 | * component-less anymore. |
| 2599 | */ |
| 2600 | if (count == 1 && legacy_dai_naming && |
| 2601 | (dai_drv[i].id == 0 || dai_drv[i].name == NULL)) { |
| 2602 | dai->name = fmt_single_name(dev, &dai->id); |
| 2603 | } else { |
| 2604 | dai->name = fmt_multiple_name(dev, &dai_drv[i]); |
| 2605 | if (dai_drv[i].id) |
| 2606 | dai->id = dai_drv[i].id; |
| 2607 | else |
| 2608 | dai->id = i; |
| 2609 | } |
| 2610 | if (dai->name == NULL) { |
| 2611 | kfree(dai); |
| 2612 | ret = -ENOMEM; |
| 2613 | goto err; |
| 2614 | } |
| 2615 | |
| 2616 | dai->component = component; |
| 2617 | dai->dev = dev; |
| 2618 | dai->driver = &dai_drv[i]; |
| 2619 | if (!dai->driver->ops) |
| 2620 | dai->driver->ops = &null_dai_ops; |
| 2621 | |
| 2622 | list_add(&dai->list, &component->dai_list); |
| 2623 | |
| 2624 | dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); |
| 2625 | } |
| 2626 | |
| 2627 | return 0; |
| 2628 | |
| 2629 | err: |
| 2630 | snd_soc_unregister_dais(component); |
| 2631 | |
| 2632 | return ret; |
| 2633 | } |
| 2634 | |
| 2635 | static void snd_soc_component_seq_notifier(struct snd_soc_dapm_context *dapm, |
| 2636 | enum snd_soc_dapm_type type, int subseq) |
| 2637 | { |
| 2638 | struct snd_soc_component *component = dapm->component; |
| 2639 | |
| 2640 | component->driver->seq_notifier(component, type, subseq); |
| 2641 | } |
| 2642 | |
| 2643 | static int snd_soc_component_stream_event(struct snd_soc_dapm_context *dapm, |
| 2644 | int event) |
| 2645 | { |
| 2646 | struct snd_soc_component *component = dapm->component; |
| 2647 | |
| 2648 | return component->driver->stream_event(component, event); |
| 2649 | } |
| 2650 | |
| 2651 | static int snd_soc_component_initialize(struct snd_soc_component *component, |
| 2652 | const struct snd_soc_component_driver *driver, struct device *dev) |
| 2653 | { |
| 2654 | struct snd_soc_dapm_context *dapm; |
| 2655 | |
| 2656 | component->name = fmt_single_name(dev, &component->id); |
| 2657 | if (!component->name) { |
| 2658 | dev_err(dev, "ASoC: Failed to allocate name\n"); |
| 2659 | return -ENOMEM; |
| 2660 | } |
| 2661 | |
| 2662 | component->dev = dev; |
| 2663 | component->driver = driver; |
| 2664 | component->probe = component->driver->probe; |
| 2665 | component->remove = component->driver->remove; |
| 2666 | |
| 2667 | dapm = &component->dapm; |
| 2668 | dapm->dev = dev; |
| 2669 | dapm->component = component; |
| 2670 | dapm->bias_level = SND_SOC_BIAS_OFF; |
| 2671 | dapm->idle_bias_off = true; |
| 2672 | if (driver->seq_notifier) |
| 2673 | dapm->seq_notifier = snd_soc_component_seq_notifier; |
| 2674 | if (driver->stream_event) |
| 2675 | dapm->stream_event = snd_soc_component_stream_event; |
| 2676 | |
| 2677 | component->controls = driver->controls; |
| 2678 | component->num_controls = driver->num_controls; |
| 2679 | component->dapm_widgets = driver->dapm_widgets; |
| 2680 | component->num_dapm_widgets = driver->num_dapm_widgets; |
| 2681 | component->dapm_routes = driver->dapm_routes; |
| 2682 | component->num_dapm_routes = driver->num_dapm_routes; |
| 2683 | |
| 2684 | INIT_LIST_HEAD(&component->dai_list); |
| 2685 | mutex_init(&component->io_mutex); |
| 2686 | |
| 2687 | return 0; |
| 2688 | } |
| 2689 | |
| 2690 | static void snd_soc_component_setup_regmap(struct snd_soc_component *component) |
| 2691 | { |
| 2692 | int val_bytes = regmap_get_val_bytes(component->regmap); |
| 2693 | |
| 2694 | /* Errors are legitimate for non-integer byte multiples */ |
| 2695 | if (val_bytes > 0) |
| 2696 | component->val_bytes = val_bytes; |
| 2697 | } |
| 2698 | |
| 2699 | #ifdef CONFIG_REGMAP |
| 2700 | |
| 2701 | /** |
| 2702 | * snd_soc_component_init_regmap() - Initialize regmap instance for the component |
| 2703 | * @component: The component for which to initialize the regmap instance |
| 2704 | * @regmap: The regmap instance that should be used by the component |
| 2705 | * |
| 2706 | * This function allows deferred assignment of the regmap instance that is |
| 2707 | * associated with the component. Only use this if the regmap instance is not |
| 2708 | * yet ready when the component is registered. The function must also be called |
| 2709 | * before the first IO attempt of the component. |
| 2710 | */ |
| 2711 | void snd_soc_component_init_regmap(struct snd_soc_component *component, |
| 2712 | struct regmap *regmap) |
| 2713 | { |
| 2714 | component->regmap = regmap; |
| 2715 | snd_soc_component_setup_regmap(component); |
| 2716 | } |
| 2717 | EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap); |
| 2718 | |
| 2719 | /** |
| 2720 | * snd_soc_component_exit_regmap() - De-initialize regmap instance for the component |
| 2721 | * @component: The component for which to de-initialize the regmap instance |
| 2722 | * |
| 2723 | * Calls regmap_exit() on the regmap instance associated to the component and |
| 2724 | * removes the regmap instance from the component. |
| 2725 | * |
| 2726 | * This function should only be used if snd_soc_component_init_regmap() was used |
| 2727 | * to initialize the regmap instance. |
| 2728 | */ |
| 2729 | void snd_soc_component_exit_regmap(struct snd_soc_component *component) |
| 2730 | { |
| 2731 | regmap_exit(component->regmap); |
| 2732 | component->regmap = NULL; |
| 2733 | } |
| 2734 | EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap); |
| 2735 | |
| 2736 | #endif |
| 2737 | |
| 2738 | static void snd_soc_component_add_unlocked(struct snd_soc_component *component) |
| 2739 | { |
| 2740 | if (!component->write && !component->read) { |
| 2741 | if (!component->regmap) |
| 2742 | component->regmap = dev_get_regmap(component->dev, NULL); |
| 2743 | if (component->regmap) |
| 2744 | snd_soc_component_setup_regmap(component); |
| 2745 | } |
| 2746 | |
| 2747 | list_add(&component->list, &component_list); |
| 2748 | INIT_LIST_HEAD(&component->dobj_list); |
| 2749 | } |
| 2750 | |
| 2751 | static void snd_soc_component_add(struct snd_soc_component *component) |
| 2752 | { |
| 2753 | mutex_lock(&client_mutex); |
| 2754 | snd_soc_component_add_unlocked(component); |
| 2755 | mutex_unlock(&client_mutex); |
| 2756 | } |
| 2757 | |
| 2758 | static void snd_soc_component_cleanup(struct snd_soc_component *component) |
| 2759 | { |
| 2760 | snd_soc_unregister_dais(component); |
| 2761 | kfree(component->name); |
| 2762 | } |
| 2763 | |
| 2764 | static void snd_soc_component_del_unlocked(struct snd_soc_component *component) |
| 2765 | { |
| 2766 | list_del(&component->list); |
| 2767 | } |
| 2768 | |
| 2769 | int snd_soc_register_component(struct device *dev, |
| 2770 | const struct snd_soc_component_driver *cmpnt_drv, |
| 2771 | struct snd_soc_dai_driver *dai_drv, |
| 2772 | int num_dai) |
| 2773 | { |
| 2774 | struct snd_soc_component *cmpnt; |
| 2775 | int ret; |
| 2776 | |
| 2777 | cmpnt = kzalloc(sizeof(*cmpnt), GFP_KERNEL); |
| 2778 | if (!cmpnt) { |
| 2779 | dev_err(dev, "ASoC: Failed to allocate memory\n"); |
| 2780 | return -ENOMEM; |
| 2781 | } |
| 2782 | |
| 2783 | ret = snd_soc_component_initialize(cmpnt, cmpnt_drv, dev); |
| 2784 | if (ret) |
| 2785 | goto err_free; |
| 2786 | |
| 2787 | cmpnt->ignore_pmdown_time = true; |
| 2788 | cmpnt->registered_as_component = true; |
| 2789 | |
| 2790 | ret = snd_soc_register_dais(cmpnt, dai_drv, num_dai, true); |
| 2791 | if (ret < 0) { |
| 2792 | dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret); |
| 2793 | goto err_cleanup; |
| 2794 | } |
| 2795 | |
| 2796 | snd_soc_component_add(cmpnt); |
| 2797 | |
| 2798 | return 0; |
| 2799 | |
| 2800 | err_cleanup: |
| 2801 | snd_soc_component_cleanup(cmpnt); |
| 2802 | err_free: |
| 2803 | kfree(cmpnt); |
| 2804 | return ret; |
| 2805 | } |
| 2806 | EXPORT_SYMBOL_GPL(snd_soc_register_component); |
| 2807 | |
| 2808 | /** |
| 2809 | * snd_soc_unregister_component - Unregister a component from the ASoC core |
| 2810 | * |
| 2811 | * @dev: The device to unregister |
| 2812 | */ |
| 2813 | void snd_soc_unregister_component(struct device *dev) |
| 2814 | { |
| 2815 | struct snd_soc_component *cmpnt; |
| 2816 | |
| 2817 | mutex_lock(&client_mutex); |
| 2818 | list_for_each_entry(cmpnt, &component_list, list) { |
| 2819 | if (dev == cmpnt->dev && cmpnt->registered_as_component) |
| 2820 | goto found; |
| 2821 | } |
| 2822 | mutex_unlock(&client_mutex); |
| 2823 | return; |
| 2824 | |
| 2825 | found: |
| 2826 | snd_soc_tplg_component_remove(cmpnt, SND_SOC_TPLG_INDEX_ALL); |
| 2827 | snd_soc_component_del_unlocked(cmpnt); |
| 2828 | mutex_unlock(&client_mutex); |
| 2829 | snd_soc_component_cleanup(cmpnt); |
| 2830 | kfree(cmpnt); |
| 2831 | } |
| 2832 | EXPORT_SYMBOL_GPL(snd_soc_unregister_component); |
| 2833 | |
| 2834 | static int snd_soc_platform_drv_probe(struct snd_soc_component *component) |
| 2835 | { |
| 2836 | struct snd_soc_platform *platform = snd_soc_component_to_platform(component); |
| 2837 | |
| 2838 | return platform->driver->probe(platform); |
| 2839 | } |
| 2840 | |
| 2841 | static void snd_soc_platform_drv_remove(struct snd_soc_component *component) |
| 2842 | { |
| 2843 | struct snd_soc_platform *platform = snd_soc_component_to_platform(component); |
| 2844 | |
| 2845 | platform->driver->remove(platform); |
| 2846 | } |
| 2847 | |
| 2848 | /** |
| 2849 | * snd_soc_add_platform - Add a platform to the ASoC core |
| 2850 | * @dev: The parent device for the platform |
| 2851 | * @platform: The platform to add |
| 2852 | * @platform_drv: The driver for the platform |
| 2853 | */ |
| 2854 | int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, |
| 2855 | const struct snd_soc_platform_driver *platform_drv) |
| 2856 | { |
| 2857 | int ret; |
| 2858 | |
| 2859 | ret = snd_soc_component_initialize(&platform->component, |
| 2860 | &platform_drv->component_driver, dev); |
| 2861 | if (ret) |
| 2862 | return ret; |
| 2863 | |
| 2864 | platform->dev = dev; |
| 2865 | platform->driver = platform_drv; |
| 2866 | |
| 2867 | if (platform_drv->probe) |
| 2868 | platform->component.probe = snd_soc_platform_drv_probe; |
| 2869 | if (platform_drv->remove) |
| 2870 | platform->component.remove = snd_soc_platform_drv_remove; |
| 2871 | |
| 2872 | #ifdef CONFIG_DEBUG_FS |
| 2873 | platform->component.debugfs_prefix = "platform"; |
| 2874 | #endif |
| 2875 | |
| 2876 | mutex_lock(&client_mutex); |
| 2877 | snd_soc_component_add_unlocked(&platform->component); |
| 2878 | list_add(&platform->list, &platform_list); |
| 2879 | mutex_unlock(&client_mutex); |
| 2880 | |
| 2881 | dev_dbg(dev, "ASoC: Registered platform '%s'\n", |
| 2882 | platform->component.name); |
| 2883 | |
| 2884 | return 0; |
| 2885 | } |
| 2886 | EXPORT_SYMBOL_GPL(snd_soc_add_platform); |
| 2887 | |
| 2888 | /** |
| 2889 | * snd_soc_register_platform - Register a platform with the ASoC core |
| 2890 | * |
| 2891 | * @dev: The device for the platform |
| 2892 | * @platform_drv: The driver for the platform |
| 2893 | */ |
| 2894 | int snd_soc_register_platform(struct device *dev, |
| 2895 | const struct snd_soc_platform_driver *platform_drv) |
| 2896 | { |
| 2897 | struct snd_soc_platform *platform; |
| 2898 | int ret; |
| 2899 | |
| 2900 | dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev)); |
| 2901 | |
| 2902 | platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL); |
| 2903 | if (platform == NULL) |
| 2904 | return -ENOMEM; |
| 2905 | |
| 2906 | ret = snd_soc_add_platform(dev, platform, platform_drv); |
| 2907 | if (ret) |
| 2908 | kfree(platform); |
| 2909 | |
| 2910 | return ret; |
| 2911 | } |
| 2912 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); |
| 2913 | |
| 2914 | /** |
| 2915 | * snd_soc_remove_platform - Remove a platform from the ASoC core |
| 2916 | * @platform: the platform to remove |
| 2917 | */ |
| 2918 | void snd_soc_remove_platform(struct snd_soc_platform *platform) |
| 2919 | { |
| 2920 | |
| 2921 | mutex_lock(&client_mutex); |
| 2922 | list_del(&platform->list); |
| 2923 | snd_soc_component_del_unlocked(&platform->component); |
| 2924 | mutex_unlock(&client_mutex); |
| 2925 | |
| 2926 | dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n", |
| 2927 | platform->component.name); |
| 2928 | |
| 2929 | snd_soc_component_cleanup(&platform->component); |
| 2930 | } |
| 2931 | EXPORT_SYMBOL_GPL(snd_soc_remove_platform); |
| 2932 | |
| 2933 | struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev) |
| 2934 | { |
| 2935 | struct snd_soc_platform *platform; |
| 2936 | |
| 2937 | mutex_lock(&client_mutex); |
| 2938 | list_for_each_entry(platform, &platform_list, list) { |
| 2939 | if (dev == platform->dev) { |
| 2940 | mutex_unlock(&client_mutex); |
| 2941 | return platform; |
| 2942 | } |
| 2943 | } |
| 2944 | mutex_unlock(&client_mutex); |
| 2945 | |
| 2946 | return NULL; |
| 2947 | } |
| 2948 | EXPORT_SYMBOL_GPL(snd_soc_lookup_platform); |
| 2949 | |
| 2950 | /** |
| 2951 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core |
| 2952 | * |
| 2953 | * @dev: platform to unregister |
| 2954 | */ |
| 2955 | void snd_soc_unregister_platform(struct device *dev) |
| 2956 | { |
| 2957 | struct snd_soc_platform *platform; |
| 2958 | |
| 2959 | platform = snd_soc_lookup_platform(dev); |
| 2960 | if (!platform) |
| 2961 | return; |
| 2962 | |
| 2963 | snd_soc_remove_platform(platform); |
| 2964 | kfree(platform); |
| 2965 | } |
| 2966 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); |
| 2967 | |
| 2968 | static u64 codec_format_map[] = { |
| 2969 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, |
| 2970 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, |
| 2971 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, |
| 2972 | SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, |
| 2973 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, |
| 2974 | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, |
| 2975 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, |
| 2976 | SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, |
| 2977 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, |
| 2978 | SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, |
| 2979 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, |
| 2980 | SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, |
| 2981 | SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, |
| 2982 | SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, |
| 2983 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE |
| 2984 | | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, |
| 2985 | }; |
| 2986 | |
| 2987 | /* Fix up the DAI formats for endianness: codecs don't actually see |
| 2988 | * the endianness of the data but we're using the CPU format |
| 2989 | * definitions which do need to include endianness so we ensure that |
| 2990 | * codec DAIs always have both big and little endian variants set. |
| 2991 | */ |
| 2992 | static void fixup_codec_formats(struct snd_soc_pcm_stream *stream) |
| 2993 | { |
| 2994 | int i; |
| 2995 | |
| 2996 | for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) |
| 2997 | if (stream->formats & codec_format_map[i]) |
| 2998 | stream->formats |= codec_format_map[i]; |
| 2999 | } |
| 3000 | |
| 3001 | static int snd_soc_codec_drv_probe(struct snd_soc_component *component) |
| 3002 | { |
| 3003 | struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| 3004 | |
| 3005 | return codec->driver->probe(codec); |
| 3006 | } |
| 3007 | |
| 3008 | static void snd_soc_codec_drv_remove(struct snd_soc_component *component) |
| 3009 | { |
| 3010 | struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| 3011 | |
| 3012 | codec->driver->remove(codec); |
| 3013 | } |
| 3014 | |
| 3015 | static int snd_soc_codec_drv_write(struct snd_soc_component *component, |
| 3016 | unsigned int reg, unsigned int val) |
| 3017 | { |
| 3018 | struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| 3019 | |
| 3020 | return codec->driver->write(codec, reg, val); |
| 3021 | } |
| 3022 | |
| 3023 | static int snd_soc_codec_drv_read(struct snd_soc_component *component, |
| 3024 | unsigned int reg, unsigned int *val) |
| 3025 | { |
| 3026 | struct snd_soc_codec *codec = snd_soc_component_to_codec(component); |
| 3027 | |
| 3028 | *val = codec->driver->read(codec, reg); |
| 3029 | |
| 3030 | return 0; |
| 3031 | } |
| 3032 | |
| 3033 | static int snd_soc_codec_set_bias_level(struct snd_soc_dapm_context *dapm, |
| 3034 | enum snd_soc_bias_level level) |
| 3035 | { |
| 3036 | struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm); |
| 3037 | |
| 3038 | return codec->driver->set_bias_level(codec, level); |
| 3039 | } |
| 3040 | |
| 3041 | /** |
| 3042 | * snd_soc_register_codec - Register a codec with the ASoC core |
| 3043 | * |
| 3044 | * @dev: The parent device for this codec |
| 3045 | * @codec_drv: Codec driver |
| 3046 | * @dai_drv: The associated DAI driver |
| 3047 | * @num_dai: Number of DAIs |
| 3048 | */ |
| 3049 | int snd_soc_register_codec(struct device *dev, |
| 3050 | const struct snd_soc_codec_driver *codec_drv, |
| 3051 | struct snd_soc_dai_driver *dai_drv, |
| 3052 | int num_dai) |
| 3053 | { |
| 3054 | struct snd_soc_dapm_context *dapm; |
| 3055 | struct snd_soc_codec *codec; |
| 3056 | struct snd_soc_dai *dai; |
| 3057 | int ret, i; |
| 3058 | |
| 3059 | dev_dbg(dev, "codec register %s\n", dev_name(dev)); |
| 3060 | |
| 3061 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 3062 | if (codec == NULL) |
| 3063 | return -ENOMEM; |
| 3064 | |
| 3065 | codec->component.codec = codec; |
| 3066 | |
| 3067 | ret = snd_soc_component_initialize(&codec->component, |
| 3068 | &codec_drv->component_driver, dev); |
| 3069 | if (ret) |
| 3070 | goto err_free; |
| 3071 | |
| 3072 | if (codec_drv->controls) { |
| 3073 | codec->component.controls = codec_drv->controls; |
| 3074 | codec->component.num_controls = codec_drv->num_controls; |
| 3075 | } |
| 3076 | if (codec_drv->dapm_widgets) { |
| 3077 | codec->component.dapm_widgets = codec_drv->dapm_widgets; |
| 3078 | codec->component.num_dapm_widgets = codec_drv->num_dapm_widgets; |
| 3079 | } |
| 3080 | if (codec_drv->dapm_routes) { |
| 3081 | codec->component.dapm_routes = codec_drv->dapm_routes; |
| 3082 | codec->component.num_dapm_routes = codec_drv->num_dapm_routes; |
| 3083 | } |
| 3084 | |
| 3085 | if (codec_drv->probe) |
| 3086 | codec->component.probe = snd_soc_codec_drv_probe; |
| 3087 | if (codec_drv->remove) |
| 3088 | codec->component.remove = snd_soc_codec_drv_remove; |
| 3089 | if (codec_drv->write) |
| 3090 | codec->component.write = snd_soc_codec_drv_write; |
| 3091 | if (codec_drv->read) |
| 3092 | codec->component.read = snd_soc_codec_drv_read; |
| 3093 | codec->component.ignore_pmdown_time = codec_drv->ignore_pmdown_time; |
| 3094 | |
| 3095 | dapm = snd_soc_codec_get_dapm(codec); |
| 3096 | dapm->idle_bias_off = codec_drv->idle_bias_off; |
| 3097 | dapm->suspend_bias_off = codec_drv->suspend_bias_off; |
| 3098 | if (codec_drv->seq_notifier) |
| 3099 | dapm->seq_notifier = codec_drv->seq_notifier; |
| 3100 | if (codec_drv->set_bias_level) |
| 3101 | dapm->set_bias_level = snd_soc_codec_set_bias_level; |
| 3102 | codec->dev = dev; |
| 3103 | codec->driver = codec_drv; |
| 3104 | codec->component.val_bytes = codec_drv->reg_word_size; |
| 3105 | |
| 3106 | #ifdef CONFIG_DEBUG_FS |
| 3107 | codec->component.init_debugfs = soc_init_codec_debugfs; |
| 3108 | codec->component.debugfs_prefix = "codec"; |
| 3109 | #endif |
| 3110 | |
| 3111 | if (codec_drv->get_regmap) |
| 3112 | codec->component.regmap = codec_drv->get_regmap(dev); |
| 3113 | |
| 3114 | for (i = 0; i < num_dai; i++) { |
| 3115 | fixup_codec_formats(&dai_drv[i].playback); |
| 3116 | fixup_codec_formats(&dai_drv[i].capture); |
| 3117 | } |
| 3118 | |
| 3119 | ret = snd_soc_register_dais(&codec->component, dai_drv, num_dai, false); |
| 3120 | if (ret < 0) { |
| 3121 | dev_err(dev, "ASoC: Failed to register DAIs: %d\n", ret); |
| 3122 | goto err_cleanup; |
| 3123 | } |
| 3124 | |
| 3125 | list_for_each_entry(dai, &codec->component.dai_list, list) |
| 3126 | dai->codec = codec; |
| 3127 | |
| 3128 | mutex_lock(&client_mutex); |
| 3129 | snd_soc_component_add_unlocked(&codec->component); |
| 3130 | list_add(&codec->list, &codec_list); |
| 3131 | mutex_unlock(&client_mutex); |
| 3132 | |
| 3133 | dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", |
| 3134 | codec->component.name); |
| 3135 | return 0; |
| 3136 | |
| 3137 | err_cleanup: |
| 3138 | snd_soc_component_cleanup(&codec->component); |
| 3139 | err_free: |
| 3140 | kfree(codec); |
| 3141 | return ret; |
| 3142 | } |
| 3143 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); |
| 3144 | |
| 3145 | /** |
| 3146 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core |
| 3147 | * |
| 3148 | * @dev: codec to unregister |
| 3149 | */ |
| 3150 | void snd_soc_unregister_codec(struct device *dev) |
| 3151 | { |
| 3152 | struct snd_soc_codec *codec; |
| 3153 | |
| 3154 | mutex_lock(&client_mutex); |
| 3155 | list_for_each_entry(codec, &codec_list, list) { |
| 3156 | if (dev == codec->dev) |
| 3157 | goto found; |
| 3158 | } |
| 3159 | mutex_unlock(&client_mutex); |
| 3160 | return; |
| 3161 | |
| 3162 | found: |
| 3163 | list_del(&codec->list); |
| 3164 | snd_soc_component_del_unlocked(&codec->component); |
| 3165 | mutex_unlock(&client_mutex); |
| 3166 | |
| 3167 | dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", |
| 3168 | codec->component.name); |
| 3169 | |
| 3170 | snd_soc_component_cleanup(&codec->component); |
| 3171 | snd_soc_cache_exit(codec); |
| 3172 | kfree(codec); |
| 3173 | } |
| 3174 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); |
| 3175 | |
| 3176 | /* Retrieve a card's name from device tree */ |
| 3177 | int snd_soc_of_parse_card_name(struct snd_soc_card *card, |
| 3178 | const char *propname) |
| 3179 | { |
| 3180 | struct device_node *np; |
| 3181 | int ret; |
| 3182 | |
| 3183 | if (!card->dev) { |
| 3184 | pr_err("card->dev is not set before calling %s\n", __func__); |
| 3185 | return -EINVAL; |
| 3186 | } |
| 3187 | |
| 3188 | np = card->dev->of_node; |
| 3189 | |
| 3190 | ret = of_property_read_string_index(np, propname, 0, &card->name); |
| 3191 | /* |
| 3192 | * EINVAL means the property does not exist. This is fine providing |
| 3193 | * card->name was previously set, which is checked later in |
| 3194 | * snd_soc_register_card. |
| 3195 | */ |
| 3196 | if (ret < 0 && ret != -EINVAL) { |
| 3197 | dev_err(card->dev, |
| 3198 | "ASoC: Property '%s' could not be read: %d\n", |
| 3199 | propname, ret); |
| 3200 | return ret; |
| 3201 | } |
| 3202 | |
| 3203 | return 0; |
| 3204 | } |
| 3205 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name); |
| 3206 | |
| 3207 | static const struct snd_soc_dapm_widget simple_widgets[] = { |
| 3208 | SND_SOC_DAPM_MIC("Microphone", NULL), |
| 3209 | SND_SOC_DAPM_LINE("Line", NULL), |
| 3210 | SND_SOC_DAPM_HP("Headphone", NULL), |
| 3211 | SND_SOC_DAPM_SPK("Speaker", NULL), |
| 3212 | }; |
| 3213 | |
| 3214 | int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, |
| 3215 | const char *propname) |
| 3216 | { |
| 3217 | struct device_node *np = card->dev->of_node; |
| 3218 | struct snd_soc_dapm_widget *widgets; |
| 3219 | const char *template, *wname; |
| 3220 | int i, j, num_widgets, ret; |
| 3221 | |
| 3222 | num_widgets = of_property_count_strings(np, propname); |
| 3223 | if (num_widgets < 0) { |
| 3224 | dev_err(card->dev, |
| 3225 | "ASoC: Property '%s' does not exist\n", propname); |
| 3226 | return -EINVAL; |
| 3227 | } |
| 3228 | if (num_widgets & 1) { |
| 3229 | dev_err(card->dev, |
| 3230 | "ASoC: Property '%s' length is not even\n", propname); |
| 3231 | return -EINVAL; |
| 3232 | } |
| 3233 | |
| 3234 | num_widgets /= 2; |
| 3235 | if (!num_widgets) { |
| 3236 | dev_err(card->dev, "ASoC: Property '%s's length is zero\n", |
| 3237 | propname); |
| 3238 | return -EINVAL; |
| 3239 | } |
| 3240 | |
| 3241 | widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets), |
| 3242 | GFP_KERNEL); |
| 3243 | if (!widgets) { |
| 3244 | dev_err(card->dev, |
| 3245 | "ASoC: Could not allocate memory for widgets\n"); |
| 3246 | return -ENOMEM; |
| 3247 | } |
| 3248 | |
| 3249 | for (i = 0; i < num_widgets; i++) { |
| 3250 | ret = of_property_read_string_index(np, propname, |
| 3251 | 2 * i, &template); |
| 3252 | if (ret) { |
| 3253 | dev_err(card->dev, |
| 3254 | "ASoC: Property '%s' index %d read error:%d\n", |
| 3255 | propname, 2 * i, ret); |
| 3256 | return -EINVAL; |
| 3257 | } |
| 3258 | |
| 3259 | for (j = 0; j < ARRAY_SIZE(simple_widgets); j++) { |
| 3260 | if (!strncmp(template, simple_widgets[j].name, |
| 3261 | strlen(simple_widgets[j].name))) { |
| 3262 | widgets[i] = simple_widgets[j]; |
| 3263 | break; |
| 3264 | } |
| 3265 | } |
| 3266 | |
| 3267 | if (j >= ARRAY_SIZE(simple_widgets)) { |
| 3268 | dev_err(card->dev, |
| 3269 | "ASoC: DAPM widget '%s' is not supported\n", |
| 3270 | template); |
| 3271 | return -EINVAL; |
| 3272 | } |
| 3273 | |
| 3274 | ret = of_property_read_string_index(np, propname, |
| 3275 | (2 * i) + 1, |
| 3276 | &wname); |
| 3277 | if (ret) { |
| 3278 | dev_err(card->dev, |
| 3279 | "ASoC: Property '%s' index %d read error:%d\n", |
| 3280 | propname, (2 * i) + 1, ret); |
| 3281 | return -EINVAL; |
| 3282 | } |
| 3283 | |
| 3284 | widgets[i].name = wname; |
| 3285 | } |
| 3286 | |
| 3287 | card->of_dapm_widgets = widgets; |
| 3288 | card->num_of_dapm_widgets = num_widgets; |
| 3289 | |
| 3290 | return 0; |
| 3291 | } |
| 3292 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_simple_widgets); |
| 3293 | |
| 3294 | int snd_soc_of_parse_tdm_slot(struct device_node *np, |
| 3295 | unsigned int *slots, |
| 3296 | unsigned int *slot_width) |
| 3297 | { |
| 3298 | u32 val; |
| 3299 | int ret; |
| 3300 | |
| 3301 | if (of_property_read_bool(np, "dai-tdm-slot-num")) { |
| 3302 | ret = of_property_read_u32(np, "dai-tdm-slot-num", &val); |
| 3303 | if (ret) |
| 3304 | return ret; |
| 3305 | |
| 3306 | if (slots) |
| 3307 | *slots = val; |
| 3308 | } |
| 3309 | |
| 3310 | if (of_property_read_bool(np, "dai-tdm-slot-width")) { |
| 3311 | ret = of_property_read_u32(np, "dai-tdm-slot-width", &val); |
| 3312 | if (ret) |
| 3313 | return ret; |
| 3314 | |
| 3315 | if (slot_width) |
| 3316 | *slot_width = val; |
| 3317 | } |
| 3318 | |
| 3319 | return 0; |
| 3320 | } |
| 3321 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_tdm_slot); |
| 3322 | |
| 3323 | void snd_soc_of_parse_audio_prefix(struct snd_soc_card *card, |
| 3324 | struct snd_soc_codec_conf *codec_conf, |
| 3325 | struct device_node *of_node, |
| 3326 | const char *propname) |
| 3327 | { |
| 3328 | struct device_node *np = card->dev->of_node; |
| 3329 | const char *str; |
| 3330 | int ret; |
| 3331 | |
| 3332 | ret = of_property_read_string(np, propname, &str); |
| 3333 | if (ret < 0) { |
| 3334 | /* no prefix is not error */ |
| 3335 | return; |
| 3336 | } |
| 3337 | |
| 3338 | codec_conf->of_node = of_node; |
| 3339 | codec_conf->name_prefix = str; |
| 3340 | } |
| 3341 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_prefix); |
| 3342 | |
| 3343 | int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, |
| 3344 | const char *propname) |
| 3345 | { |
| 3346 | struct device_node *np = card->dev->of_node; |
| 3347 | int num_routes; |
| 3348 | struct snd_soc_dapm_route *routes; |
| 3349 | int i, ret; |
| 3350 | |
| 3351 | num_routes = of_property_count_strings(np, propname); |
| 3352 | if (num_routes < 0 || num_routes & 1) { |
| 3353 | dev_err(card->dev, |
| 3354 | "ASoC: Property '%s' does not exist or its length is not even\n", |
| 3355 | propname); |
| 3356 | return -EINVAL; |
| 3357 | } |
| 3358 | num_routes /= 2; |
| 3359 | if (!num_routes) { |
| 3360 | dev_err(card->dev, "ASoC: Property '%s's length is zero\n", |
| 3361 | propname); |
| 3362 | return -EINVAL; |
| 3363 | } |
| 3364 | |
| 3365 | routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes), |
| 3366 | GFP_KERNEL); |
| 3367 | if (!routes) { |
| 3368 | dev_err(card->dev, |
| 3369 | "ASoC: Could not allocate DAPM route table\n"); |
| 3370 | return -EINVAL; |
| 3371 | } |
| 3372 | |
| 3373 | for (i = 0; i < num_routes; i++) { |
| 3374 | ret = of_property_read_string_index(np, propname, |
| 3375 | 2 * i, &routes[i].sink); |
| 3376 | if (ret) { |
| 3377 | dev_err(card->dev, |
| 3378 | "ASoC: Property '%s' index %d could not be read: %d\n", |
| 3379 | propname, 2 * i, ret); |
| 3380 | return -EINVAL; |
| 3381 | } |
| 3382 | ret = of_property_read_string_index(np, propname, |
| 3383 | (2 * i) + 1, &routes[i].source); |
| 3384 | if (ret) { |
| 3385 | dev_err(card->dev, |
| 3386 | "ASoC: Property '%s' index %d could not be read: %d\n", |
| 3387 | propname, (2 * i) + 1, ret); |
| 3388 | return -EINVAL; |
| 3389 | } |
| 3390 | } |
| 3391 | |
| 3392 | card->num_of_dapm_routes = num_routes; |
| 3393 | card->of_dapm_routes = routes; |
| 3394 | |
| 3395 | return 0; |
| 3396 | } |
| 3397 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing); |
| 3398 | |
| 3399 | unsigned int snd_soc_of_parse_daifmt(struct device_node *np, |
| 3400 | const char *prefix, |
| 3401 | struct device_node **bitclkmaster, |
| 3402 | struct device_node **framemaster) |
| 3403 | { |
| 3404 | int ret, i; |
| 3405 | char prop[128]; |
| 3406 | unsigned int format = 0; |
| 3407 | int bit, frame; |
| 3408 | const char *str; |
| 3409 | struct { |
| 3410 | char *name; |
| 3411 | unsigned int val; |
| 3412 | } of_fmt_table[] = { |
| 3413 | { "i2s", SND_SOC_DAIFMT_I2S }, |
| 3414 | { "right_j", SND_SOC_DAIFMT_RIGHT_J }, |
| 3415 | { "left_j", SND_SOC_DAIFMT_LEFT_J }, |
| 3416 | { "dsp_a", SND_SOC_DAIFMT_DSP_A }, |
| 3417 | { "dsp_b", SND_SOC_DAIFMT_DSP_B }, |
| 3418 | { "ac97", SND_SOC_DAIFMT_AC97 }, |
| 3419 | { "pdm", SND_SOC_DAIFMT_PDM}, |
| 3420 | { "msb", SND_SOC_DAIFMT_MSB }, |
| 3421 | { "lsb", SND_SOC_DAIFMT_LSB }, |
| 3422 | }; |
| 3423 | |
| 3424 | if (!prefix) |
| 3425 | prefix = ""; |
| 3426 | |
| 3427 | /* |
| 3428 | * check "[prefix]format = xxx" |
| 3429 | * SND_SOC_DAIFMT_FORMAT_MASK area |
| 3430 | */ |
| 3431 | snprintf(prop, sizeof(prop), "%sformat", prefix); |
| 3432 | ret = of_property_read_string(np, prop, &str); |
| 3433 | if (ret == 0) { |
| 3434 | for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) { |
| 3435 | if (strcmp(str, of_fmt_table[i].name) == 0) { |
| 3436 | format |= of_fmt_table[i].val; |
| 3437 | break; |
| 3438 | } |
| 3439 | } |
| 3440 | } |
| 3441 | |
| 3442 | /* |
| 3443 | * check "[prefix]continuous-clock" |
| 3444 | * SND_SOC_DAIFMT_CLOCK_MASK area |
| 3445 | */ |
| 3446 | snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix); |
| 3447 | if (of_get_property(np, prop, NULL)) |
| 3448 | format |= SND_SOC_DAIFMT_CONT; |
| 3449 | else |
| 3450 | format |= SND_SOC_DAIFMT_GATED; |
| 3451 | |
| 3452 | /* |
| 3453 | * check "[prefix]bitclock-inversion" |
| 3454 | * check "[prefix]frame-inversion" |
| 3455 | * SND_SOC_DAIFMT_INV_MASK area |
| 3456 | */ |
| 3457 | snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix); |
| 3458 | bit = !!of_get_property(np, prop, NULL); |
| 3459 | |
| 3460 | snprintf(prop, sizeof(prop), "%sframe-inversion", prefix); |
| 3461 | frame = !!of_get_property(np, prop, NULL); |
| 3462 | |
| 3463 | switch ((bit << 4) + frame) { |
| 3464 | case 0x11: |
| 3465 | format |= SND_SOC_DAIFMT_IB_IF; |
| 3466 | break; |
| 3467 | case 0x10: |
| 3468 | format |= SND_SOC_DAIFMT_IB_NF; |
| 3469 | break; |
| 3470 | case 0x01: |
| 3471 | format |= SND_SOC_DAIFMT_NB_IF; |
| 3472 | break; |
| 3473 | default: |
| 3474 | /* SND_SOC_DAIFMT_NB_NF is default */ |
| 3475 | break; |
| 3476 | } |
| 3477 | |
| 3478 | /* |
| 3479 | * check "[prefix]bitclock-master" |
| 3480 | * check "[prefix]frame-master" |
| 3481 | * SND_SOC_DAIFMT_MASTER_MASK area |
| 3482 | */ |
| 3483 | snprintf(prop, sizeof(prop), "%sbitclock-master", prefix); |
| 3484 | bit = !!of_get_property(np, prop, NULL); |
| 3485 | if (bit && bitclkmaster) |
| 3486 | *bitclkmaster = of_parse_phandle(np, prop, 0); |
| 3487 | |
| 3488 | snprintf(prop, sizeof(prop), "%sframe-master", prefix); |
| 3489 | frame = !!of_get_property(np, prop, NULL); |
| 3490 | if (frame && framemaster) |
| 3491 | *framemaster = of_parse_phandle(np, prop, 0); |
| 3492 | |
| 3493 | switch ((bit << 4) + frame) { |
| 3494 | case 0x11: |
| 3495 | format |= SND_SOC_DAIFMT_CBM_CFM; |
| 3496 | break; |
| 3497 | case 0x10: |
| 3498 | format |= SND_SOC_DAIFMT_CBM_CFS; |
| 3499 | break; |
| 3500 | case 0x01: |
| 3501 | format |= SND_SOC_DAIFMT_CBS_CFM; |
| 3502 | break; |
| 3503 | default: |
| 3504 | format |= SND_SOC_DAIFMT_CBS_CFS; |
| 3505 | break; |
| 3506 | } |
| 3507 | |
| 3508 | return format; |
| 3509 | } |
| 3510 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt); |
| 3511 | |
| 3512 | static int snd_soc_get_dai_name(struct of_phandle_args *args, |
| 3513 | const char **dai_name) |
| 3514 | { |
| 3515 | struct snd_soc_component *pos; |
| 3516 | struct device_node *component_of_node; |
| 3517 | int ret = -EPROBE_DEFER; |
| 3518 | |
| 3519 | mutex_lock(&client_mutex); |
| 3520 | list_for_each_entry(pos, &component_list, list) { |
| 3521 | component_of_node = pos->dev->of_node; |
| 3522 | if (!component_of_node && pos->dev->parent) |
| 3523 | component_of_node = pos->dev->parent->of_node; |
| 3524 | |
| 3525 | if (component_of_node != args->np) |
| 3526 | continue; |
| 3527 | |
| 3528 | if (pos->driver->of_xlate_dai_name) { |
| 3529 | ret = pos->driver->of_xlate_dai_name(pos, |
| 3530 | args, |
| 3531 | dai_name); |
| 3532 | } else { |
| 3533 | int id = -1; |
| 3534 | |
| 3535 | switch (args->args_count) { |
| 3536 | case 0: |
| 3537 | id = 0; /* same as dai_drv[0] */ |
| 3538 | break; |
| 3539 | case 1: |
| 3540 | id = args->args[0]; |
| 3541 | break; |
| 3542 | default: |
| 3543 | /* not supported */ |
| 3544 | break; |
| 3545 | } |
| 3546 | |
| 3547 | if (id < 0 || id >= pos->num_dai) { |
| 3548 | ret = -EINVAL; |
| 3549 | continue; |
| 3550 | } |
| 3551 | |
| 3552 | ret = 0; |
| 3553 | |
| 3554 | *dai_name = pos->dai_drv[id].name; |
| 3555 | if (!*dai_name) |
| 3556 | *dai_name = pos->name; |
| 3557 | } |
| 3558 | |
| 3559 | break; |
| 3560 | } |
| 3561 | mutex_unlock(&client_mutex); |
| 3562 | return ret; |
| 3563 | } |
| 3564 | |
| 3565 | int snd_soc_of_get_dai_name(struct device_node *of_node, |
| 3566 | const char **dai_name) |
| 3567 | { |
| 3568 | struct of_phandle_args args; |
| 3569 | int ret; |
| 3570 | |
| 3571 | ret = of_parse_phandle_with_args(of_node, "sound-dai", |
| 3572 | "#sound-dai-cells", 0, &args); |
| 3573 | if (ret) |
| 3574 | return ret; |
| 3575 | |
| 3576 | ret = snd_soc_get_dai_name(&args, dai_name); |
| 3577 | |
| 3578 | of_node_put(args.np); |
| 3579 | |
| 3580 | return ret; |
| 3581 | } |
| 3582 | EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); |
| 3583 | |
| 3584 | /* |
| 3585 | * snd_soc_of_get_dai_link_codecs - Parse a list of CODECs in the devicetree |
| 3586 | * @dev: Card device |
| 3587 | * @of_node: Device node |
| 3588 | * @dai_link: DAI link |
| 3589 | * |
| 3590 | * Builds an array of CODEC DAI components from the DAI link property |
| 3591 | * 'sound-dai'. |
| 3592 | * The array is set in the DAI link and the number of DAIs is set accordingly. |
| 3593 | * The device nodes in the array (of_node) must be dereferenced by the caller. |
| 3594 | * |
| 3595 | * Returns 0 for success |
| 3596 | */ |
| 3597 | int snd_soc_of_get_dai_link_codecs(struct device *dev, |
| 3598 | struct device_node *of_node, |
| 3599 | struct snd_soc_dai_link *dai_link) |
| 3600 | { |
| 3601 | struct of_phandle_args args; |
| 3602 | struct snd_soc_dai_link_component *component; |
| 3603 | char *name; |
| 3604 | int index, num_codecs, ret; |
| 3605 | |
| 3606 | /* Count the number of CODECs */ |
| 3607 | name = "sound-dai"; |
| 3608 | num_codecs = of_count_phandle_with_args(of_node, name, |
| 3609 | "#sound-dai-cells"); |
| 3610 | if (num_codecs <= 0) { |
| 3611 | if (num_codecs == -ENOENT) |
| 3612 | dev_err(dev, "No 'sound-dai' property\n"); |
| 3613 | else |
| 3614 | dev_err(dev, "Bad phandle in 'sound-dai'\n"); |
| 3615 | return num_codecs; |
| 3616 | } |
| 3617 | component = devm_kzalloc(dev, |
| 3618 | sizeof *component * num_codecs, |
| 3619 | GFP_KERNEL); |
| 3620 | if (!component) |
| 3621 | return -ENOMEM; |
| 3622 | dai_link->codecs = component; |
| 3623 | dai_link->num_codecs = num_codecs; |
| 3624 | |
| 3625 | /* Parse the list */ |
| 3626 | for (index = 0, component = dai_link->codecs; |
| 3627 | index < dai_link->num_codecs; |
| 3628 | index++, component++) { |
| 3629 | ret = of_parse_phandle_with_args(of_node, name, |
| 3630 | "#sound-dai-cells", |
| 3631 | index, &args); |
| 3632 | if (ret) |
| 3633 | goto err; |
| 3634 | component->of_node = args.np; |
| 3635 | ret = snd_soc_get_dai_name(&args, &component->dai_name); |
| 3636 | if (ret < 0) |
| 3637 | goto err; |
| 3638 | } |
| 3639 | return 0; |
| 3640 | err: |
| 3641 | for (index = 0, component = dai_link->codecs; |
| 3642 | index < dai_link->num_codecs; |
| 3643 | index++, component++) { |
| 3644 | if (!component->of_node) |
| 3645 | break; |
| 3646 | of_node_put(component->of_node); |
| 3647 | component->of_node = NULL; |
| 3648 | } |
| 3649 | dai_link->codecs = NULL; |
| 3650 | dai_link->num_codecs = 0; |
| 3651 | return ret; |
| 3652 | } |
| 3653 | EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_link_codecs); |
| 3654 | |
| 3655 | static int __init snd_soc_init(void) |
| 3656 | { |
| 3657 | snd_soc_debugfs_init(); |
| 3658 | snd_soc_util_init(); |
| 3659 | |
| 3660 | return platform_driver_register(&soc_driver); |
| 3661 | } |
| 3662 | module_init(snd_soc_init); |
| 3663 | |
| 3664 | static void __exit snd_soc_exit(void) |
| 3665 | { |
| 3666 | snd_soc_util_exit(); |
| 3667 | snd_soc_debugfs_exit(); |
| 3668 | |
| 3669 | #ifdef CONFIG_DEBUG_FS |
| 3670 | #endif |
| 3671 | platform_driver_unregister(&soc_driver); |
| 3672 | } |
| 3673 | module_exit(snd_soc_exit); |
| 3674 | |
| 3675 | /* Module information */ |
| 3676 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
| 3677 | MODULE_DESCRIPTION("ALSA SoC Core"); |
| 3678 | MODULE_LICENSE("GPL"); |
| 3679 | MODULE_ALIAS("platform:soc-audio"); |