| 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/ctype.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/of.h> |
| 36 | #include <sound/ac97_codec.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/initval.h> |
| 44 | |
| 45 | #define CREATE_TRACE_POINTS |
| 46 | #include <trace/events/asoc.h> |
| 47 | |
| 48 | #define NAME_SIZE 32 |
| 49 | |
| 50 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
| 51 | |
| 52 | #ifdef CONFIG_DEBUG_FS |
| 53 | struct dentry *snd_soc_debugfs_root; |
| 54 | EXPORT_SYMBOL_GPL(snd_soc_debugfs_root); |
| 55 | #endif |
| 56 | |
| 57 | static DEFINE_MUTEX(client_mutex); |
| 58 | static LIST_HEAD(dai_list); |
| 59 | static LIST_HEAD(platform_list); |
| 60 | static LIST_HEAD(codec_list); |
| 61 | static LIST_HEAD(component_list); |
| 62 | |
| 63 | /* |
| 64 | * This is a timeout to do a DAPM powerdown after a stream is closed(). |
| 65 | * It can be used to eliminate pops between different playback streams, e.g. |
| 66 | * between two audio tracks. |
| 67 | */ |
| 68 | static int pmdown_time = 5000; |
| 69 | module_param(pmdown_time, int, 0); |
| 70 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); |
| 71 | |
| 72 | /* returns the minimum number of bytes needed to represent |
| 73 | * a particular given value */ |
| 74 | static int min_bytes_needed(unsigned long val) |
| 75 | { |
| 76 | int c = 0; |
| 77 | int i; |
| 78 | |
| 79 | for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c) |
| 80 | if (val & (1UL << i)) |
| 81 | break; |
| 82 | c = (sizeof val * 8) - c; |
| 83 | if (!c || (c % 8)) |
| 84 | c = (c + 8) / 8; |
| 85 | else |
| 86 | c /= 8; |
| 87 | return c; |
| 88 | } |
| 89 | |
| 90 | /* fill buf which is 'len' bytes with a formatted |
| 91 | * string of the form 'reg: value\n' */ |
| 92 | static int format_register_str(struct snd_soc_codec *codec, |
| 93 | unsigned int reg, char *buf, size_t len) |
| 94 | { |
| 95 | int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| 96 | int regsize = codec->driver->reg_word_size * 2; |
| 97 | int ret; |
| 98 | char tmpbuf[len + 1]; |
| 99 | char regbuf[regsize + 1]; |
| 100 | |
| 101 | /* since tmpbuf is allocated on the stack, warn the callers if they |
| 102 | * try to abuse this function */ |
| 103 | WARN_ON(len > 63); |
| 104 | |
| 105 | /* +2 for ': ' and + 1 for '\n' */ |
| 106 | if (wordsize + regsize + 2 + 1 != len) |
| 107 | return -EINVAL; |
| 108 | |
| 109 | ret = snd_soc_read(codec, reg); |
| 110 | if (ret < 0) { |
| 111 | memset(regbuf, 'X', regsize); |
| 112 | regbuf[regsize] = '\0'; |
| 113 | } else { |
| 114 | snprintf(regbuf, regsize + 1, "%.*x", regsize, ret); |
| 115 | } |
| 116 | |
| 117 | /* prepare the buffer */ |
| 118 | snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf); |
| 119 | /* copy it back to the caller without the '\0' */ |
| 120 | memcpy(buf, tmpbuf, len); |
| 121 | |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | /* codec register dump */ |
| 126 | static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf, |
| 127 | size_t count, loff_t pos) |
| 128 | { |
| 129 | int i, step = 1; |
| 130 | int wordsize, regsize; |
| 131 | int len; |
| 132 | size_t total = 0; |
| 133 | loff_t p = 0; |
| 134 | |
| 135 | wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| 136 | regsize = codec->driver->reg_word_size * 2; |
| 137 | |
| 138 | len = wordsize + regsize + 2 + 1; |
| 139 | |
| 140 | if (!codec->driver->reg_cache_size) |
| 141 | return 0; |
| 142 | |
| 143 | if (codec->driver->reg_cache_step) |
| 144 | step = codec->driver->reg_cache_step; |
| 145 | |
| 146 | for (i = 0; i < codec->driver->reg_cache_size; i += step) { |
| 147 | if (!snd_soc_codec_readable_register(codec, i)) |
| 148 | continue; |
| 149 | if (codec->driver->display_register) { |
| 150 | count += codec->driver->display_register(codec, buf + count, |
| 151 | PAGE_SIZE - count, i); |
| 152 | } else { |
| 153 | /* only support larger than PAGE_SIZE bytes debugfs |
| 154 | * entries for the default case */ |
| 155 | if (p >= pos) { |
| 156 | if (total + len >= count - 1) |
| 157 | break; |
| 158 | format_register_str(codec, i, buf + total, len); |
| 159 | total += len; |
| 160 | } |
| 161 | p += len; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | total = min(total, count - 1); |
| 166 | |
| 167 | return total; |
| 168 | } |
| 169 | |
| 170 | static ssize_t codec_reg_show(struct device *dev, |
| 171 | struct device_attribute *attr, char *buf) |
| 172 | { |
| 173 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 174 | |
| 175 | return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0); |
| 176 | } |
| 177 | |
| 178 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
| 179 | |
| 180 | static ssize_t pmdown_time_show(struct device *dev, |
| 181 | struct device_attribute *attr, char *buf) |
| 182 | { |
| 183 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 184 | |
| 185 | return sprintf(buf, "%ld\n", rtd->pmdown_time); |
| 186 | } |
| 187 | |
| 188 | static ssize_t pmdown_time_set(struct device *dev, |
| 189 | struct device_attribute *attr, |
| 190 | const char *buf, size_t count) |
| 191 | { |
| 192 | struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev); |
| 193 | int ret; |
| 194 | |
| 195 | ret = strict_strtol(buf, 10, &rtd->pmdown_time); |
| 196 | if (ret) |
| 197 | return ret; |
| 198 | |
| 199 | return count; |
| 200 | } |
| 201 | |
| 202 | static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); |
| 203 | |
| 204 | #ifdef CONFIG_DEBUG_FS |
| 205 | static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, |
| 206 | size_t count, loff_t *ppos) |
| 207 | { |
| 208 | ssize_t ret; |
| 209 | struct snd_soc_codec *codec = file->private_data; |
| 210 | char *buf; |
| 211 | |
| 212 | if (*ppos < 0 || !count) |
| 213 | return -EINVAL; |
| 214 | |
| 215 | buf = kmalloc(count, GFP_KERNEL); |
| 216 | if (!buf) |
| 217 | return -ENOMEM; |
| 218 | |
| 219 | ret = soc_codec_reg_show(codec, buf, count, *ppos); |
| 220 | if (ret >= 0) { |
| 221 | if (copy_to_user(user_buf, buf, ret)) { |
| 222 | kfree(buf); |
| 223 | return -EFAULT; |
| 224 | } |
| 225 | *ppos += ret; |
| 226 | } |
| 227 | |
| 228 | kfree(buf); |
| 229 | return ret; |
| 230 | } |
| 231 | |
| 232 | static ssize_t codec_reg_write_file(struct file *file, |
| 233 | const char __user *user_buf, size_t count, loff_t *ppos) |
| 234 | { |
| 235 | char buf[32]; |
| 236 | size_t buf_size; |
| 237 | char *start = buf; |
| 238 | unsigned long reg, value; |
| 239 | struct snd_soc_codec *codec = file->private_data; |
| 240 | |
| 241 | buf_size = min(count, (sizeof(buf)-1)); |
| 242 | if (copy_from_user(buf, user_buf, buf_size)) |
| 243 | return -EFAULT; |
| 244 | buf[buf_size] = 0; |
| 245 | |
| 246 | while (*start == ' ') |
| 247 | start++; |
| 248 | reg = simple_strtoul(start, &start, 16); |
| 249 | while (*start == ' ') |
| 250 | start++; |
| 251 | if (strict_strtoul(start, 16, &value)) |
| 252 | return -EINVAL; |
| 253 | |
| 254 | /* Userspace has been fiddling around behind the kernel's back */ |
| 255 | add_taint(TAINT_USER, LOCKDEP_NOW_UNRELIABLE); |
| 256 | |
| 257 | snd_soc_write(codec, reg, value); |
| 258 | return buf_size; |
| 259 | } |
| 260 | |
| 261 | static const struct file_operations codec_reg_fops = { |
| 262 | .open = simple_open, |
| 263 | .read = codec_reg_read_file, |
| 264 | .write = codec_reg_write_file, |
| 265 | .llseek = default_llseek, |
| 266 | }; |
| 267 | |
| 268 | static void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
| 269 | { |
| 270 | struct dentry *debugfs_card_root = codec->card->debugfs_card_root; |
| 271 | |
| 272 | codec->debugfs_codec_root = debugfs_create_dir(codec->name, |
| 273 | debugfs_card_root); |
| 274 | if (!codec->debugfs_codec_root) { |
| 275 | dev_warn(codec->dev, "ASoC: Failed to create codec debugfs" |
| 276 | " directory\n"); |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root, |
| 281 | &codec->cache_sync); |
| 282 | debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root, |
| 283 | &codec->cache_only); |
| 284 | |
| 285 | codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
| 286 | codec->debugfs_codec_root, |
| 287 | codec, &codec_reg_fops); |
| 288 | if (!codec->debugfs_reg) |
| 289 | dev_warn(codec->dev, "ASoC: Failed to create codec register" |
| 290 | " debugfs file\n"); |
| 291 | |
| 292 | snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root); |
| 293 | } |
| 294 | |
| 295 | static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
| 296 | { |
| 297 | debugfs_remove_recursive(codec->debugfs_codec_root); |
| 298 | } |
| 299 | |
| 300 | static void soc_init_platform_debugfs(struct snd_soc_platform *platform) |
| 301 | { |
| 302 | struct dentry *debugfs_card_root = platform->card->debugfs_card_root; |
| 303 | |
| 304 | platform->debugfs_platform_root = debugfs_create_dir(platform->name, |
| 305 | debugfs_card_root); |
| 306 | if (!platform->debugfs_platform_root) { |
| 307 | dev_warn(platform->dev, |
| 308 | "ASoC: Failed to create platform debugfs directory\n"); |
| 309 | return; |
| 310 | } |
| 311 | |
| 312 | snd_soc_dapm_debugfs_init(&platform->dapm, |
| 313 | platform->debugfs_platform_root); |
| 314 | } |
| 315 | |
| 316 | static void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform) |
| 317 | { |
| 318 | debugfs_remove_recursive(platform->debugfs_platform_root); |
| 319 | } |
| 320 | |
| 321 | static ssize_t codec_list_read_file(struct file *file, char __user *user_buf, |
| 322 | size_t count, loff_t *ppos) |
| 323 | { |
| 324 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 325 | ssize_t len, ret = 0; |
| 326 | struct snd_soc_codec *codec; |
| 327 | |
| 328 | if (!buf) |
| 329 | return -ENOMEM; |
| 330 | |
| 331 | list_for_each_entry(codec, &codec_list, list) { |
| 332 | len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| 333 | codec->name); |
| 334 | if (len >= 0) |
| 335 | ret += len; |
| 336 | if (ret > PAGE_SIZE) { |
| 337 | ret = PAGE_SIZE; |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | if (ret >= 0) |
| 343 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 344 | |
| 345 | kfree(buf); |
| 346 | |
| 347 | return ret; |
| 348 | } |
| 349 | |
| 350 | static const struct file_operations codec_list_fops = { |
| 351 | .read = codec_list_read_file, |
| 352 | .llseek = default_llseek,/* read accesses f_pos */ |
| 353 | }; |
| 354 | |
| 355 | static ssize_t dai_list_read_file(struct file *file, char __user *user_buf, |
| 356 | size_t count, loff_t *ppos) |
| 357 | { |
| 358 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 359 | ssize_t len, ret = 0; |
| 360 | struct snd_soc_dai *dai; |
| 361 | |
| 362 | if (!buf) |
| 363 | return -ENOMEM; |
| 364 | |
| 365 | list_for_each_entry(dai, &dai_list, list) { |
| 366 | len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name); |
| 367 | if (len >= 0) |
| 368 | ret += len; |
| 369 | if (ret > PAGE_SIZE) { |
| 370 | ret = PAGE_SIZE; |
| 371 | break; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 376 | |
| 377 | kfree(buf); |
| 378 | |
| 379 | return ret; |
| 380 | } |
| 381 | |
| 382 | static const struct file_operations dai_list_fops = { |
| 383 | .read = dai_list_read_file, |
| 384 | .llseek = default_llseek,/* read accesses f_pos */ |
| 385 | }; |
| 386 | |
| 387 | static ssize_t platform_list_read_file(struct file *file, |
| 388 | char __user *user_buf, |
| 389 | size_t count, loff_t *ppos) |
| 390 | { |
| 391 | char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 392 | ssize_t len, ret = 0; |
| 393 | struct snd_soc_platform *platform; |
| 394 | |
| 395 | if (!buf) |
| 396 | return -ENOMEM; |
| 397 | |
| 398 | list_for_each_entry(platform, &platform_list, list) { |
| 399 | len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| 400 | platform->name); |
| 401 | if (len >= 0) |
| 402 | ret += len; |
| 403 | if (ret > PAGE_SIZE) { |
| 404 | ret = PAGE_SIZE; |
| 405 | break; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| 410 | |
| 411 | kfree(buf); |
| 412 | |
| 413 | return ret; |
| 414 | } |
| 415 | |
| 416 | static const struct file_operations platform_list_fops = { |
| 417 | .read = platform_list_read_file, |
| 418 | .llseek = default_llseek,/* read accesses f_pos */ |
| 419 | }; |
| 420 | |
| 421 | static void soc_init_card_debugfs(struct snd_soc_card *card) |
| 422 | { |
| 423 | card->debugfs_card_root = debugfs_create_dir(card->name, |
| 424 | snd_soc_debugfs_root); |
| 425 | if (!card->debugfs_card_root) { |
| 426 | dev_warn(card->dev, |
| 427 | "ASoC: Failed to create card debugfs directory\n"); |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
| 432 | card->debugfs_card_root, |
| 433 | &card->pop_time); |
| 434 | if (!card->debugfs_pop_time) |
| 435 | dev_warn(card->dev, |
| 436 | "ASoC: Failed to create pop time debugfs file\n"); |
| 437 | } |
| 438 | |
| 439 | static void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| 440 | { |
| 441 | debugfs_remove_recursive(card->debugfs_card_root); |
| 442 | } |
| 443 | |
| 444 | #else |
| 445 | |
| 446 | static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
| 447 | { |
| 448 | } |
| 449 | |
| 450 | static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
| 451 | { |
| 452 | } |
| 453 | |
| 454 | static inline void soc_init_platform_debugfs(struct snd_soc_platform *platform) |
| 455 | { |
| 456 | } |
| 457 | |
| 458 | static inline void soc_cleanup_platform_debugfs(struct snd_soc_platform *platform) |
| 459 | { |
| 460 | } |
| 461 | |
| 462 | static inline void soc_init_card_debugfs(struct snd_soc_card *card) |
| 463 | { |
| 464 | } |
| 465 | |
| 466 | static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| 467 | { |
| 468 | } |
| 469 | #endif |
| 470 | |
| 471 | struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, |
| 472 | const char *dai_link, int stream) |
| 473 | { |
| 474 | int i; |
| 475 | |
| 476 | for (i = 0; i < card->num_links; i++) { |
| 477 | if (card->rtd[i].dai_link->no_pcm && |
| 478 | !strcmp(card->rtd[i].dai_link->name, dai_link)) |
| 479 | return card->rtd[i].pcm->streams[stream].substream; |
| 480 | } |
| 481 | dev_dbg(card->dev, "ASoC: failed to find dai link %s\n", dai_link); |
| 482 | return NULL; |
| 483 | } |
| 484 | EXPORT_SYMBOL_GPL(snd_soc_get_dai_substream); |
| 485 | |
| 486 | struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card, |
| 487 | const char *dai_link) |
| 488 | { |
| 489 | int i; |
| 490 | |
| 491 | for (i = 0; i < card->num_links; i++) { |
| 492 | if (!strcmp(card->rtd[i].dai_link->name, dai_link)) |
| 493 | return &card->rtd[i]; |
| 494 | } |
| 495 | dev_dbg(card->dev, "ASoC: failed to find rtd %s\n", dai_link); |
| 496 | return NULL; |
| 497 | } |
| 498 | EXPORT_SYMBOL_GPL(snd_soc_get_pcm_runtime); |
| 499 | |
| 500 | #ifdef CONFIG_SND_SOC_AC97_BUS |
| 501 | /* unregister ac97 codec */ |
| 502 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) |
| 503 | { |
| 504 | if (codec->ac97->dev.bus) |
| 505 | device_unregister(&codec->ac97->dev); |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | /* stop no dev release warning */ |
| 510 | static void soc_ac97_device_release(struct device *dev){} |
| 511 | |
| 512 | /* register ac97 codec to bus */ |
| 513 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) |
| 514 | { |
| 515 | int err; |
| 516 | |
| 517 | codec->ac97->dev.bus = &ac97_bus_type; |
| 518 | codec->ac97->dev.parent = codec->card->dev; |
| 519 | codec->ac97->dev.release = soc_ac97_device_release; |
| 520 | |
| 521 | dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
| 522 | codec->card->snd_card->number, 0, codec->name); |
| 523 | err = device_register(&codec->ac97->dev); |
| 524 | if (err < 0) { |
| 525 | dev_err(codec->dev, "ASoC: Can't register ac97 bus\n"); |
| 526 | codec->ac97->dev.bus = NULL; |
| 527 | return err; |
| 528 | } |
| 529 | return 0; |
| 530 | } |
| 531 | #endif |
| 532 | |
| 533 | #ifdef CONFIG_PM_SLEEP |
| 534 | /* powers down audio subsystem for suspend */ |
| 535 | int snd_soc_suspend(struct device *dev) |
| 536 | { |
| 537 | struct snd_soc_card *card = dev_get_drvdata(dev); |
| 538 | struct snd_soc_codec *codec; |
| 539 | int i; |
| 540 | |
| 541 | /* If the initialization of this soc device failed, there is no codec |
| 542 | * associated with it. Just bail out in this case. |
| 543 | */ |
| 544 | if (list_empty(&card->codec_dev_list)) |
| 545 | return 0; |
| 546 | |
| 547 | /* Due to the resume being scheduled into a workqueue we could |
| 548 | * suspend before that's finished - wait for it to complete. |
| 549 | */ |
| 550 | snd_power_lock(card->snd_card); |
| 551 | snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0); |
| 552 | snd_power_unlock(card->snd_card); |
| 553 | |
| 554 | /* we're going to block userspace touching us until resume completes */ |
| 555 | snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot); |
| 556 | |
| 557 | /* mute any active DACs */ |
| 558 | for (i = 0; i < card->num_rtd; i++) { |
| 559 | struct snd_soc_dai *dai = card->rtd[i].codec_dai; |
| 560 | struct snd_soc_dai_driver *drv = dai->driver; |
| 561 | |
| 562 | if (card->rtd[i].dai_link->ignore_suspend) |
| 563 | continue; |
| 564 | |
| 565 | if (drv->ops->digital_mute && dai->playback_active) |
| 566 | drv->ops->digital_mute(dai, 1); |
| 567 | } |
| 568 | |
| 569 | /* suspend all pcms */ |
| 570 | for (i = 0; i < card->num_rtd; i++) { |
| 571 | if (card->rtd[i].dai_link->ignore_suspend) |
| 572 | continue; |
| 573 | |
| 574 | snd_pcm_suspend_all(card->rtd[i].pcm); |
| 575 | } |
| 576 | |
| 577 | if (card->suspend_pre) |
| 578 | card->suspend_pre(card); |
| 579 | |
| 580 | for (i = 0; i < card->num_rtd; i++) { |
| 581 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 582 | struct snd_soc_platform *platform = card->rtd[i].platform; |
| 583 | |
| 584 | if (card->rtd[i].dai_link->ignore_suspend) |
| 585 | continue; |
| 586 | |
| 587 | if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control) |
| 588 | cpu_dai->driver->suspend(cpu_dai); |
| 589 | if (platform->driver->suspend && !platform->suspended) { |
| 590 | platform->driver->suspend(cpu_dai); |
| 591 | platform->suspended = 1; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | /* close any waiting streams and save state */ |
| 596 | for (i = 0; i < card->num_rtd; i++) { |
| 597 | flush_delayed_work(&card->rtd[i].delayed_work); |
| 598 | card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level; |
| 599 | } |
| 600 | |
| 601 | for (i = 0; i < card->num_rtd; i++) { |
| 602 | |
| 603 | if (card->rtd[i].dai_link->ignore_suspend) |
| 604 | continue; |
| 605 | |
| 606 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 607 | SNDRV_PCM_STREAM_PLAYBACK, |
| 608 | SND_SOC_DAPM_STREAM_SUSPEND); |
| 609 | |
| 610 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 611 | SNDRV_PCM_STREAM_CAPTURE, |
| 612 | SND_SOC_DAPM_STREAM_SUSPEND); |
| 613 | } |
| 614 | |
| 615 | /* Recheck all analogue paths too */ |
| 616 | dapm_mark_io_dirty(&card->dapm); |
| 617 | snd_soc_dapm_sync(&card->dapm); |
| 618 | |
| 619 | /* suspend all CODECs */ |
| 620 | list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| 621 | /* If there are paths active then the CODEC will be held with |
| 622 | * bias _ON and should not be suspended. */ |
| 623 | if (!codec->suspended && codec->driver->suspend) { |
| 624 | switch (codec->dapm.bias_level) { |
| 625 | case SND_SOC_BIAS_STANDBY: |
| 626 | /* |
| 627 | * If the CODEC is capable of idle |
| 628 | * bias off then being in STANDBY |
| 629 | * means it's doing something, |
| 630 | * otherwise fall through. |
| 631 | */ |
| 632 | if (codec->dapm.idle_bias_off) { |
| 633 | dev_dbg(codec->dev, |
| 634 | "ASoC: idle_bias_off CODEC on" |
| 635 | " over suspend\n"); |
| 636 | break; |
| 637 | } |
| 638 | case SND_SOC_BIAS_OFF: |
| 639 | codec->driver->suspend(codec); |
| 640 | codec->suspended = 1; |
| 641 | codec->cache_sync = 1; |
| 642 | if (codec->using_regmap) |
| 643 | regcache_mark_dirty(codec->control_data); |
| 644 | break; |
| 645 | default: |
| 646 | dev_dbg(codec->dev, "ASoC: CODEC is on" |
| 647 | " over suspend\n"); |
| 648 | break; |
| 649 | } |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | for (i = 0; i < card->num_rtd; i++) { |
| 654 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 655 | |
| 656 | if (card->rtd[i].dai_link->ignore_suspend) |
| 657 | continue; |
| 658 | |
| 659 | if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control) |
| 660 | cpu_dai->driver->suspend(cpu_dai); |
| 661 | } |
| 662 | |
| 663 | if (card->suspend_post) |
| 664 | card->suspend_post(card); |
| 665 | |
| 666 | return 0; |
| 667 | } |
| 668 | EXPORT_SYMBOL_GPL(snd_soc_suspend); |
| 669 | |
| 670 | /* deferred resume work, so resume can complete before we finished |
| 671 | * setting our codec back up, which can be very slow on I2C |
| 672 | */ |
| 673 | static void soc_resume_deferred(struct work_struct *work) |
| 674 | { |
| 675 | struct snd_soc_card *card = |
| 676 | container_of(work, struct snd_soc_card, deferred_resume_work); |
| 677 | struct snd_soc_codec *codec; |
| 678 | int i; |
| 679 | |
| 680 | /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
| 681 | * so userspace apps are blocked from touching us |
| 682 | */ |
| 683 | |
| 684 | dev_dbg(card->dev, "ASoC: starting resume work\n"); |
| 685 | |
| 686 | /* Bring us up into D2 so that DAPM starts enabling things */ |
| 687 | snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2); |
| 688 | |
| 689 | if (card->resume_pre) |
| 690 | card->resume_pre(card); |
| 691 | |
| 692 | /* resume AC97 DAIs */ |
| 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->resume && cpu_dai->driver->ac97_control) |
| 700 | cpu_dai->driver->resume(cpu_dai); |
| 701 | } |
| 702 | |
| 703 | list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| 704 | /* If the CODEC was idle over suspend then it will have been |
| 705 | * left with bias OFF or STANDBY and suspended so we must now |
| 706 | * resume. Otherwise the suspend was suppressed. |
| 707 | */ |
| 708 | if (codec->driver->resume && codec->suspended) { |
| 709 | switch (codec->dapm.bias_level) { |
| 710 | case SND_SOC_BIAS_STANDBY: |
| 711 | case SND_SOC_BIAS_OFF: |
| 712 | codec->driver->resume(codec); |
| 713 | codec->suspended = 0; |
| 714 | break; |
| 715 | default: |
| 716 | dev_dbg(codec->dev, "ASoC: CODEC was on over" |
| 717 | " suspend\n"); |
| 718 | break; |
| 719 | } |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | for (i = 0; i < card->num_rtd; i++) { |
| 724 | |
| 725 | if (card->rtd[i].dai_link->ignore_suspend) |
| 726 | continue; |
| 727 | |
| 728 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 729 | SNDRV_PCM_STREAM_PLAYBACK, |
| 730 | SND_SOC_DAPM_STREAM_RESUME); |
| 731 | |
| 732 | snd_soc_dapm_stream_event(&card->rtd[i], |
| 733 | SNDRV_PCM_STREAM_CAPTURE, |
| 734 | SND_SOC_DAPM_STREAM_RESUME); |
| 735 | } |
| 736 | |
| 737 | /* unmute any active DACs */ |
| 738 | for (i = 0; i < card->num_rtd; i++) { |
| 739 | struct snd_soc_dai *dai = card->rtd[i].codec_dai; |
| 740 | struct snd_soc_dai_driver *drv = dai->driver; |
| 741 | |
| 742 | if (card->rtd[i].dai_link->ignore_suspend) |
| 743 | continue; |
| 744 | |
| 745 | if (drv->ops->digital_mute && dai->playback_active) |
| 746 | drv->ops->digital_mute(dai, 0); |
| 747 | } |
| 748 | |
| 749 | for (i = 0; i < card->num_rtd; i++) { |
| 750 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 751 | struct snd_soc_platform *platform = card->rtd[i].platform; |
| 752 | |
| 753 | if (card->rtd[i].dai_link->ignore_suspend) |
| 754 | continue; |
| 755 | |
| 756 | if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control) |
| 757 | cpu_dai->driver->resume(cpu_dai); |
| 758 | if (platform->driver->resume && platform->suspended) { |
| 759 | platform->driver->resume(cpu_dai); |
| 760 | platform->suspended = 0; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | if (card->resume_post) |
| 765 | card->resume_post(card); |
| 766 | |
| 767 | dev_dbg(card->dev, "ASoC: resume work completed\n"); |
| 768 | |
| 769 | /* userspace can access us now we are back as we were before */ |
| 770 | snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); |
| 771 | |
| 772 | /* Recheck all analogue paths too */ |
| 773 | dapm_mark_io_dirty(&card->dapm); |
| 774 | snd_soc_dapm_sync(&card->dapm); |
| 775 | } |
| 776 | |
| 777 | /* powers up audio subsystem after a suspend */ |
| 778 | int snd_soc_resume(struct device *dev) |
| 779 | { |
| 780 | struct snd_soc_card *card = dev_get_drvdata(dev); |
| 781 | int i, ac97_control = 0; |
| 782 | |
| 783 | /* If the initialization of this soc device failed, there is no codec |
| 784 | * associated with it. Just bail out in this case. |
| 785 | */ |
| 786 | if (list_empty(&card->codec_dev_list)) |
| 787 | return 0; |
| 788 | |
| 789 | /* AC97 devices might have other drivers hanging off them so |
| 790 | * need to resume immediately. Other drivers don't have that |
| 791 | * problem and may take a substantial amount of time to resume |
| 792 | * due to I/O costs and anti-pop so handle them out of line. |
| 793 | */ |
| 794 | for (i = 0; i < card->num_rtd; i++) { |
| 795 | struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| 796 | ac97_control |= cpu_dai->driver->ac97_control; |
| 797 | } |
| 798 | if (ac97_control) { |
| 799 | dev_dbg(dev, "ASoC: Resuming AC97 immediately\n"); |
| 800 | soc_resume_deferred(&card->deferred_resume_work); |
| 801 | } else { |
| 802 | dev_dbg(dev, "ASoC: Scheduling resume work\n"); |
| 803 | if (!schedule_work(&card->deferred_resume_work)) |
| 804 | dev_err(dev, "ASoC: resume work item may be lost\n"); |
| 805 | } |
| 806 | |
| 807 | return 0; |
| 808 | } |
| 809 | EXPORT_SYMBOL_GPL(snd_soc_resume); |
| 810 | #else |
| 811 | #define snd_soc_suspend NULL |
| 812 | #define snd_soc_resume NULL |
| 813 | #endif |
| 814 | |
| 815 | static const struct snd_soc_dai_ops null_dai_ops = { |
| 816 | }; |
| 817 | |
| 818 | static int soc_bind_dai_link(struct snd_soc_card *card, int num) |
| 819 | { |
| 820 | struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| 821 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 822 | struct snd_soc_codec *codec; |
| 823 | struct snd_soc_platform *platform; |
| 824 | struct snd_soc_dai *codec_dai, *cpu_dai; |
| 825 | const char *platform_name; |
| 826 | |
| 827 | dev_dbg(card->dev, "ASoC: binding %s at idx %d\n", dai_link->name, num); |
| 828 | |
| 829 | /* Find CPU DAI from registered DAIs*/ |
| 830 | list_for_each_entry(cpu_dai, &dai_list, list) { |
| 831 | if (dai_link->cpu_of_node && |
| 832 | (cpu_dai->dev->of_node != dai_link->cpu_of_node)) |
| 833 | continue; |
| 834 | if (dai_link->cpu_name && |
| 835 | strcmp(dev_name(cpu_dai->dev), dai_link->cpu_name)) |
| 836 | continue; |
| 837 | if (dai_link->cpu_dai_name && |
| 838 | strcmp(cpu_dai->name, dai_link->cpu_dai_name)) |
| 839 | continue; |
| 840 | |
| 841 | rtd->cpu_dai = cpu_dai; |
| 842 | } |
| 843 | |
| 844 | if (!rtd->cpu_dai) { |
| 845 | dev_err(card->dev, "ASoC: CPU DAI %s not registered\n", |
| 846 | dai_link->cpu_dai_name); |
| 847 | return -EPROBE_DEFER; |
| 848 | } |
| 849 | |
| 850 | /* Find CODEC from registered CODECs */ |
| 851 | list_for_each_entry(codec, &codec_list, list) { |
| 852 | if (dai_link->codec_of_node) { |
| 853 | if (codec->dev->of_node != dai_link->codec_of_node) |
| 854 | continue; |
| 855 | } else { |
| 856 | if (strcmp(codec->name, dai_link->codec_name)) |
| 857 | continue; |
| 858 | } |
| 859 | |
| 860 | rtd->codec = codec; |
| 861 | |
| 862 | /* |
| 863 | * CODEC found, so find CODEC DAI from registered DAIs from |
| 864 | * this CODEC |
| 865 | */ |
| 866 | list_for_each_entry(codec_dai, &dai_list, list) { |
| 867 | if (codec->dev == codec_dai->dev && |
| 868 | !strcmp(codec_dai->name, |
| 869 | dai_link->codec_dai_name)) { |
| 870 | |
| 871 | rtd->codec_dai = codec_dai; |
| 872 | } |
| 873 | } |
| 874 | |
| 875 | if (!rtd->codec_dai) { |
| 876 | dev_err(card->dev, "ASoC: CODEC DAI %s not registered\n", |
| 877 | dai_link->codec_dai_name); |
| 878 | return -EPROBE_DEFER; |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | if (!rtd->codec) { |
| 883 | dev_err(card->dev, "ASoC: CODEC %s not registered\n", |
| 884 | dai_link->codec_name); |
| 885 | return -EPROBE_DEFER; |
| 886 | } |
| 887 | |
| 888 | /* if there's no platform we match on the empty platform */ |
| 889 | platform_name = dai_link->platform_name; |
| 890 | if (!platform_name && !dai_link->platform_of_node) |
| 891 | platform_name = "snd-soc-dummy"; |
| 892 | |
| 893 | /* find one from the set of registered platforms */ |
| 894 | list_for_each_entry(platform, &platform_list, list) { |
| 895 | if (dai_link->platform_of_node) { |
| 896 | if (platform->dev->of_node != |
| 897 | dai_link->platform_of_node) |
| 898 | continue; |
| 899 | } else { |
| 900 | if (strcmp(platform->name, platform_name)) |
| 901 | continue; |
| 902 | } |
| 903 | |
| 904 | rtd->platform = platform; |
| 905 | } |
| 906 | if (!rtd->platform) { |
| 907 | dev_err(card->dev, "ASoC: platform %s not registered\n", |
| 908 | dai_link->platform_name); |
| 909 | return -EPROBE_DEFER; |
| 910 | } |
| 911 | |
| 912 | card->num_rtd++; |
| 913 | |
| 914 | return 0; |
| 915 | } |
| 916 | |
| 917 | static int soc_remove_platform(struct snd_soc_platform *platform) |
| 918 | { |
| 919 | int ret; |
| 920 | |
| 921 | if (platform->driver->remove) { |
| 922 | ret = platform->driver->remove(platform); |
| 923 | if (ret < 0) |
| 924 | dev_err(platform->dev, "ASoC: failed to remove %d\n", |
| 925 | ret); |
| 926 | } |
| 927 | |
| 928 | /* Make sure all DAPM widgets are freed */ |
| 929 | snd_soc_dapm_free(&platform->dapm); |
| 930 | |
| 931 | soc_cleanup_platform_debugfs(platform); |
| 932 | platform->probed = 0; |
| 933 | list_del(&platform->card_list); |
| 934 | module_put(platform->dev->driver->owner); |
| 935 | |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | static void soc_remove_codec(struct snd_soc_codec *codec) |
| 940 | { |
| 941 | int err; |
| 942 | |
| 943 | if (codec->driver->remove) { |
| 944 | err = codec->driver->remove(codec); |
| 945 | if (err < 0) |
| 946 | dev_err(codec->dev, "ASoC: failed to remove %d\n", err); |
| 947 | } |
| 948 | |
| 949 | /* Make sure all DAPM widgets are freed */ |
| 950 | snd_soc_dapm_free(&codec->dapm); |
| 951 | |
| 952 | soc_cleanup_codec_debugfs(codec); |
| 953 | codec->probed = 0; |
| 954 | list_del(&codec->card_list); |
| 955 | module_put(codec->dev->driver->owner); |
| 956 | } |
| 957 | |
| 958 | static void soc_remove_link_dais(struct snd_soc_card *card, int num, int order) |
| 959 | { |
| 960 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 961 | struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai; |
| 962 | int err; |
| 963 | |
| 964 | /* unregister the rtd device */ |
| 965 | if (rtd->dev_registered) { |
| 966 | device_remove_file(rtd->dev, &dev_attr_pmdown_time); |
| 967 | device_remove_file(rtd->dev, &dev_attr_codec_reg); |
| 968 | device_unregister(rtd->dev); |
| 969 | rtd->dev_registered = 0; |
| 970 | } |
| 971 | |
| 972 | /* remove the CODEC DAI */ |
| 973 | if (codec_dai && codec_dai->probed && |
| 974 | codec_dai->driver->remove_order == order) { |
| 975 | if (codec_dai->driver->remove) { |
| 976 | err = codec_dai->driver->remove(codec_dai); |
| 977 | if (err < 0) |
| 978 | dev_err(codec_dai->dev, |
| 979 | "ASoC: failed to remove %s: %d\n", |
| 980 | codec_dai->name, err); |
| 981 | } |
| 982 | codec_dai->probed = 0; |
| 983 | list_del(&codec_dai->card_list); |
| 984 | } |
| 985 | |
| 986 | /* remove the cpu_dai */ |
| 987 | if (cpu_dai && cpu_dai->probed && |
| 988 | cpu_dai->driver->remove_order == order) { |
| 989 | if (cpu_dai->driver->remove) { |
| 990 | err = cpu_dai->driver->remove(cpu_dai); |
| 991 | if (err < 0) |
| 992 | dev_err(cpu_dai->dev, |
| 993 | "ASoC: failed to remove %s: %d\n", |
| 994 | cpu_dai->name, err); |
| 995 | } |
| 996 | cpu_dai->probed = 0; |
| 997 | list_del(&cpu_dai->card_list); |
| 998 | |
| 999 | if (!cpu_dai->codec) { |
| 1000 | snd_soc_dapm_free(&cpu_dai->dapm); |
| 1001 | module_put(cpu_dai->dev->driver->owner); |
| 1002 | } |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | static void soc_remove_link_components(struct snd_soc_card *card, int num, |
| 1007 | int order) |
| 1008 | { |
| 1009 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1010 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1011 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 1012 | struct snd_soc_platform *platform = rtd->platform; |
| 1013 | struct snd_soc_codec *codec; |
| 1014 | |
| 1015 | /* remove the platform */ |
| 1016 | if (platform && platform->probed && |
| 1017 | platform->driver->remove_order == order) { |
| 1018 | soc_remove_platform(platform); |
| 1019 | } |
| 1020 | |
| 1021 | /* remove the CODEC-side CODEC */ |
| 1022 | if (codec_dai) { |
| 1023 | codec = codec_dai->codec; |
| 1024 | if (codec && codec->probed && |
| 1025 | codec->driver->remove_order == order) |
| 1026 | soc_remove_codec(codec); |
| 1027 | } |
| 1028 | |
| 1029 | /* remove any CPU-side CODEC */ |
| 1030 | if (cpu_dai) { |
| 1031 | codec = cpu_dai->codec; |
| 1032 | if (codec && codec->probed && |
| 1033 | codec->driver->remove_order == order) |
| 1034 | soc_remove_codec(codec); |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | static void soc_remove_dai_links(struct snd_soc_card *card) |
| 1039 | { |
| 1040 | int dai, order; |
| 1041 | |
| 1042 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1043 | order++) { |
| 1044 | for (dai = 0; dai < card->num_rtd; dai++) |
| 1045 | soc_remove_link_dais(card, dai, order); |
| 1046 | } |
| 1047 | |
| 1048 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1049 | order++) { |
| 1050 | for (dai = 0; dai < card->num_rtd; dai++) |
| 1051 | soc_remove_link_components(card, dai, order); |
| 1052 | } |
| 1053 | |
| 1054 | card->num_rtd = 0; |
| 1055 | } |
| 1056 | |
| 1057 | static void soc_set_name_prefix(struct snd_soc_card *card, |
| 1058 | struct snd_soc_codec *codec) |
| 1059 | { |
| 1060 | int i; |
| 1061 | |
| 1062 | if (card->codec_conf == NULL) |
| 1063 | return; |
| 1064 | |
| 1065 | for (i = 0; i < card->num_configs; i++) { |
| 1066 | struct snd_soc_codec_conf *map = &card->codec_conf[i]; |
| 1067 | if (map->dev_name && !strcmp(codec->name, map->dev_name)) { |
| 1068 | codec->name_prefix = map->name_prefix; |
| 1069 | break; |
| 1070 | } |
| 1071 | } |
| 1072 | } |
| 1073 | |
| 1074 | static int soc_probe_codec(struct snd_soc_card *card, |
| 1075 | struct snd_soc_codec *codec) |
| 1076 | { |
| 1077 | int ret = 0; |
| 1078 | const struct snd_soc_codec_driver *driver = codec->driver; |
| 1079 | struct snd_soc_dai *dai; |
| 1080 | |
| 1081 | codec->card = card; |
| 1082 | codec->dapm.card = card; |
| 1083 | soc_set_name_prefix(card, codec); |
| 1084 | |
| 1085 | if (!try_module_get(codec->dev->driver->owner)) |
| 1086 | return -ENODEV; |
| 1087 | |
| 1088 | soc_init_codec_debugfs(codec); |
| 1089 | |
| 1090 | if (driver->dapm_widgets) |
| 1091 | snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets, |
| 1092 | driver->num_dapm_widgets); |
| 1093 | |
| 1094 | /* Create DAPM widgets for each DAI stream */ |
| 1095 | list_for_each_entry(dai, &dai_list, list) { |
| 1096 | if (dai->dev != codec->dev) |
| 1097 | continue; |
| 1098 | |
| 1099 | snd_soc_dapm_new_dai_widgets(&codec->dapm, dai); |
| 1100 | } |
| 1101 | |
| 1102 | codec->dapm.idle_bias_off = driver->idle_bias_off; |
| 1103 | |
| 1104 | if (driver->probe) { |
| 1105 | ret = driver->probe(codec); |
| 1106 | if (ret < 0) { |
| 1107 | dev_err(codec->dev, |
| 1108 | "ASoC: failed to probe CODEC %d\n", ret); |
| 1109 | goto err_probe; |
| 1110 | } |
| 1111 | WARN(codec->dapm.idle_bias_off && |
| 1112 | codec->dapm.bias_level != SND_SOC_BIAS_OFF, |
| 1113 | "codec %s can not start from non-off bias" |
| 1114 | " with idle_bias_off==1\n", codec->name); |
| 1115 | } |
| 1116 | |
| 1117 | /* If the driver didn't set I/O up try regmap */ |
| 1118 | if (!codec->write && dev_get_regmap(codec->dev, NULL)) |
| 1119 | snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP); |
| 1120 | |
| 1121 | if (driver->controls) |
| 1122 | snd_soc_add_codec_controls(codec, driver->controls, |
| 1123 | driver->num_controls); |
| 1124 | if (driver->dapm_routes) |
| 1125 | snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes, |
| 1126 | driver->num_dapm_routes); |
| 1127 | |
| 1128 | /* mark codec as probed and add to card codec list */ |
| 1129 | codec->probed = 1; |
| 1130 | list_add(&codec->card_list, &card->codec_dev_list); |
| 1131 | list_add(&codec->dapm.list, &card->dapm_list); |
| 1132 | |
| 1133 | return 0; |
| 1134 | |
| 1135 | err_probe: |
| 1136 | soc_cleanup_codec_debugfs(codec); |
| 1137 | module_put(codec->dev->driver->owner); |
| 1138 | |
| 1139 | return ret; |
| 1140 | } |
| 1141 | |
| 1142 | static int soc_probe_platform(struct snd_soc_card *card, |
| 1143 | struct snd_soc_platform *platform) |
| 1144 | { |
| 1145 | int ret = 0; |
| 1146 | const struct snd_soc_platform_driver *driver = platform->driver; |
| 1147 | struct snd_soc_dai *dai; |
| 1148 | |
| 1149 | platform->card = card; |
| 1150 | platform->dapm.card = card; |
| 1151 | |
| 1152 | if (!try_module_get(platform->dev->driver->owner)) |
| 1153 | return -ENODEV; |
| 1154 | |
| 1155 | soc_init_platform_debugfs(platform); |
| 1156 | |
| 1157 | if (driver->dapm_widgets) |
| 1158 | snd_soc_dapm_new_controls(&platform->dapm, |
| 1159 | driver->dapm_widgets, driver->num_dapm_widgets); |
| 1160 | |
| 1161 | /* Create DAPM widgets for each DAI stream */ |
| 1162 | list_for_each_entry(dai, &dai_list, list) { |
| 1163 | if (dai->dev != platform->dev) |
| 1164 | continue; |
| 1165 | |
| 1166 | snd_soc_dapm_new_dai_widgets(&platform->dapm, dai); |
| 1167 | } |
| 1168 | |
| 1169 | platform->dapm.idle_bias_off = 1; |
| 1170 | |
| 1171 | if (driver->probe) { |
| 1172 | ret = driver->probe(platform); |
| 1173 | if (ret < 0) { |
| 1174 | dev_err(platform->dev, |
| 1175 | "ASoC: failed to probe platform %d\n", ret); |
| 1176 | goto err_probe; |
| 1177 | } |
| 1178 | } |
| 1179 | |
| 1180 | if (driver->controls) |
| 1181 | snd_soc_add_platform_controls(platform, driver->controls, |
| 1182 | driver->num_controls); |
| 1183 | if (driver->dapm_routes) |
| 1184 | snd_soc_dapm_add_routes(&platform->dapm, driver->dapm_routes, |
| 1185 | driver->num_dapm_routes); |
| 1186 | |
| 1187 | /* mark platform as probed and add to card platform list */ |
| 1188 | platform->probed = 1; |
| 1189 | list_add(&platform->card_list, &card->platform_dev_list); |
| 1190 | list_add(&platform->dapm.list, &card->dapm_list); |
| 1191 | |
| 1192 | return 0; |
| 1193 | |
| 1194 | err_probe: |
| 1195 | soc_cleanup_platform_debugfs(platform); |
| 1196 | module_put(platform->dev->driver->owner); |
| 1197 | |
| 1198 | return ret; |
| 1199 | } |
| 1200 | |
| 1201 | static void rtd_release(struct device *dev) |
| 1202 | { |
| 1203 | kfree(dev); |
| 1204 | } |
| 1205 | |
| 1206 | static int soc_post_component_init(struct snd_soc_card *card, |
| 1207 | struct snd_soc_codec *codec, |
| 1208 | int num, int dailess) |
| 1209 | { |
| 1210 | struct snd_soc_dai_link *dai_link = NULL; |
| 1211 | struct snd_soc_aux_dev *aux_dev = NULL; |
| 1212 | struct snd_soc_pcm_runtime *rtd; |
| 1213 | const char *temp, *name; |
| 1214 | int ret = 0; |
| 1215 | |
| 1216 | if (!dailess) { |
| 1217 | dai_link = &card->dai_link[num]; |
| 1218 | rtd = &card->rtd[num]; |
| 1219 | name = dai_link->name; |
| 1220 | } else { |
| 1221 | aux_dev = &card->aux_dev[num]; |
| 1222 | rtd = &card->rtd_aux[num]; |
| 1223 | name = aux_dev->name; |
| 1224 | } |
| 1225 | rtd->card = card; |
| 1226 | |
| 1227 | /* Make sure all DAPM widgets are instantiated */ |
| 1228 | snd_soc_dapm_new_widgets(&codec->dapm); |
| 1229 | |
| 1230 | /* machine controls, routes and widgets are not prefixed */ |
| 1231 | temp = codec->name_prefix; |
| 1232 | codec->name_prefix = NULL; |
| 1233 | |
| 1234 | /* do machine specific initialization */ |
| 1235 | if (!dailess && dai_link->init) |
| 1236 | ret = dai_link->init(rtd); |
| 1237 | else if (dailess && aux_dev->init) |
| 1238 | ret = aux_dev->init(&codec->dapm); |
| 1239 | if (ret < 0) { |
| 1240 | dev_err(card->dev, "ASoC: failed to init %s: %d\n", name, ret); |
| 1241 | return ret; |
| 1242 | } |
| 1243 | codec->name_prefix = temp; |
| 1244 | |
| 1245 | /* register the rtd device */ |
| 1246 | rtd->codec = codec; |
| 1247 | |
| 1248 | rtd->dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
| 1249 | if (!rtd->dev) |
| 1250 | return -ENOMEM; |
| 1251 | device_initialize(rtd->dev); |
| 1252 | rtd->dev->parent = card->dev; |
| 1253 | rtd->dev->release = rtd_release; |
| 1254 | rtd->dev->init_name = name; |
| 1255 | dev_set_drvdata(rtd->dev, rtd); |
| 1256 | mutex_init(&rtd->pcm_mutex); |
| 1257 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].be_clients); |
| 1258 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].be_clients); |
| 1259 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_PLAYBACK].fe_clients); |
| 1260 | INIT_LIST_HEAD(&rtd->dpcm[SNDRV_PCM_STREAM_CAPTURE].fe_clients); |
| 1261 | ret = device_add(rtd->dev); |
| 1262 | if (ret < 0) { |
| 1263 | /* calling put_device() here to free the rtd->dev */ |
| 1264 | put_device(rtd->dev); |
| 1265 | dev_err(card->dev, |
| 1266 | "ASoC: failed to register runtime device: %d\n", ret); |
| 1267 | return ret; |
| 1268 | } |
| 1269 | rtd->dev_registered = 1; |
| 1270 | |
| 1271 | /* add DAPM sysfs entries for this codec */ |
| 1272 | ret = snd_soc_dapm_sys_add(rtd->dev); |
| 1273 | if (ret < 0) |
| 1274 | dev_err(codec->dev, |
| 1275 | "ASoC: failed to add codec dapm sysfs entries: %d\n", ret); |
| 1276 | |
| 1277 | /* add codec sysfs entries */ |
| 1278 | ret = device_create_file(rtd->dev, &dev_attr_codec_reg); |
| 1279 | if (ret < 0) |
| 1280 | dev_err(codec->dev, |
| 1281 | "ASoC: failed to add codec sysfs files: %d\n", ret); |
| 1282 | |
| 1283 | #ifdef CONFIG_DEBUG_FS |
| 1284 | /* add DPCM sysfs entries */ |
| 1285 | if (!dailess && !dai_link->dynamic) |
| 1286 | goto out; |
| 1287 | |
| 1288 | ret = soc_dpcm_debugfs_add(rtd); |
| 1289 | if (ret < 0) |
| 1290 | dev_err(rtd->dev, "ASoC: failed to add dpcm sysfs entries: %d\n", ret); |
| 1291 | |
| 1292 | out: |
| 1293 | #endif |
| 1294 | return 0; |
| 1295 | } |
| 1296 | |
| 1297 | static int soc_probe_link_components(struct snd_soc_card *card, int num, |
| 1298 | int order) |
| 1299 | { |
| 1300 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1301 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1302 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 1303 | struct snd_soc_platform *platform = rtd->platform; |
| 1304 | int ret; |
| 1305 | |
| 1306 | /* probe the CPU-side component, if it is a CODEC */ |
| 1307 | if (cpu_dai->codec && |
| 1308 | !cpu_dai->codec->probed && |
| 1309 | cpu_dai->codec->driver->probe_order == order) { |
| 1310 | ret = soc_probe_codec(card, cpu_dai->codec); |
| 1311 | if (ret < 0) |
| 1312 | return ret; |
| 1313 | } |
| 1314 | |
| 1315 | /* probe the CODEC-side component */ |
| 1316 | if (!codec_dai->codec->probed && |
| 1317 | codec_dai->codec->driver->probe_order == order) { |
| 1318 | ret = soc_probe_codec(card, codec_dai->codec); |
| 1319 | if (ret < 0) |
| 1320 | return ret; |
| 1321 | } |
| 1322 | |
| 1323 | /* probe the platform */ |
| 1324 | if (!platform->probed && |
| 1325 | platform->driver->probe_order == order) { |
| 1326 | ret = soc_probe_platform(card, platform); |
| 1327 | if (ret < 0) |
| 1328 | return ret; |
| 1329 | } |
| 1330 | |
| 1331 | return 0; |
| 1332 | } |
| 1333 | |
| 1334 | static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) |
| 1335 | { |
| 1336 | struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| 1337 | struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| 1338 | struct snd_soc_codec *codec = rtd->codec; |
| 1339 | struct snd_soc_platform *platform = rtd->platform; |
| 1340 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 1341 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 1342 | struct snd_soc_dapm_widget *play_w, *capture_w; |
| 1343 | int ret; |
| 1344 | |
| 1345 | dev_dbg(card->dev, "ASoC: probe %s dai link %d late %d\n", |
| 1346 | card->name, num, order); |
| 1347 | |
| 1348 | /* config components */ |
| 1349 | cpu_dai->platform = platform; |
| 1350 | codec_dai->card = card; |
| 1351 | cpu_dai->card = card; |
| 1352 | |
| 1353 | /* set default power off timeout */ |
| 1354 | rtd->pmdown_time = pmdown_time; |
| 1355 | |
| 1356 | /* probe the cpu_dai */ |
| 1357 | if (!cpu_dai->probed && |
| 1358 | cpu_dai->driver->probe_order == order) { |
| 1359 | if (!cpu_dai->codec) { |
| 1360 | cpu_dai->dapm.card = card; |
| 1361 | if (!try_module_get(cpu_dai->dev->driver->owner)) |
| 1362 | return -ENODEV; |
| 1363 | |
| 1364 | list_add(&cpu_dai->dapm.list, &card->dapm_list); |
| 1365 | snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai); |
| 1366 | } |
| 1367 | |
| 1368 | if (cpu_dai->driver->probe) { |
| 1369 | ret = cpu_dai->driver->probe(cpu_dai); |
| 1370 | if (ret < 0) { |
| 1371 | dev_err(cpu_dai->dev, |
| 1372 | "ASoC: failed to probe CPU DAI %s: %d\n", |
| 1373 | cpu_dai->name, ret); |
| 1374 | module_put(cpu_dai->dev->driver->owner); |
| 1375 | return ret; |
| 1376 | } |
| 1377 | } |
| 1378 | cpu_dai->probed = 1; |
| 1379 | /* mark cpu_dai as probed and add to card dai list */ |
| 1380 | list_add(&cpu_dai->card_list, &card->dai_dev_list); |
| 1381 | } |
| 1382 | |
| 1383 | /* probe the CODEC DAI */ |
| 1384 | if (!codec_dai->probed && codec_dai->driver->probe_order == order) { |
| 1385 | if (codec_dai->driver->probe) { |
| 1386 | ret = codec_dai->driver->probe(codec_dai); |
| 1387 | if (ret < 0) { |
| 1388 | dev_err(codec_dai->dev, |
| 1389 | "ASoC: failed to probe CODEC DAI %s: %d\n", |
| 1390 | codec_dai->name, ret); |
| 1391 | return ret; |
| 1392 | } |
| 1393 | } |
| 1394 | |
| 1395 | /* mark codec_dai as probed and add to card dai list */ |
| 1396 | codec_dai->probed = 1; |
| 1397 | list_add(&codec_dai->card_list, &card->dai_dev_list); |
| 1398 | } |
| 1399 | |
| 1400 | /* complete DAI probe during last probe */ |
| 1401 | if (order != SND_SOC_COMP_ORDER_LAST) |
| 1402 | return 0; |
| 1403 | |
| 1404 | ret = soc_post_component_init(card, codec, num, 0); |
| 1405 | if (ret) |
| 1406 | return ret; |
| 1407 | |
| 1408 | ret = device_create_file(rtd->dev, &dev_attr_pmdown_time); |
| 1409 | if (ret < 0) |
| 1410 | dev_warn(rtd->dev, "ASoC: failed to add pmdown_time sysfs: %d\n", |
| 1411 | ret); |
| 1412 | |
| 1413 | if (cpu_dai->driver->compress_dai) { |
| 1414 | /*create compress_device"*/ |
| 1415 | ret = soc_new_compress(rtd, num); |
| 1416 | if (ret < 0) { |
| 1417 | dev_err(card->dev, "ASoC: can't create compress %s\n", |
| 1418 | dai_link->stream_name); |
| 1419 | return ret; |
| 1420 | } |
| 1421 | } else { |
| 1422 | |
| 1423 | if (!dai_link->params) { |
| 1424 | /* create the pcm */ |
| 1425 | ret = soc_new_pcm(rtd, num); |
| 1426 | if (ret < 0) { |
| 1427 | dev_err(card->dev, "ASoC: can't create pcm %s :%d\n", |
| 1428 | dai_link->stream_name, ret); |
| 1429 | return ret; |
| 1430 | } |
| 1431 | } else { |
| 1432 | /* link the DAI widgets */ |
| 1433 | play_w = codec_dai->playback_widget; |
| 1434 | capture_w = cpu_dai->capture_widget; |
| 1435 | if (play_w && capture_w) { |
| 1436 | ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| 1437 | capture_w, play_w); |
| 1438 | if (ret != 0) { |
| 1439 | dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| 1440 | play_w->name, capture_w->name, ret); |
| 1441 | return ret; |
| 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | play_w = cpu_dai->playback_widget; |
| 1446 | capture_w = codec_dai->capture_widget; |
| 1447 | if (play_w && capture_w) { |
| 1448 | ret = snd_soc_dapm_new_pcm(card, dai_link->params, |
| 1449 | capture_w, play_w); |
| 1450 | if (ret != 0) { |
| 1451 | dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n", |
| 1452 | play_w->name, capture_w->name, ret); |
| 1453 | return ret; |
| 1454 | } |
| 1455 | } |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | /* add platform data for AC97 devices */ |
| 1460 | if (rtd->codec_dai->driver->ac97_control) |
| 1461 | snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata); |
| 1462 | |
| 1463 | return 0; |
| 1464 | } |
| 1465 | |
| 1466 | #ifdef CONFIG_SND_SOC_AC97_BUS |
| 1467 | static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd) |
| 1468 | { |
| 1469 | int ret; |
| 1470 | |
| 1471 | /* Only instantiate AC97 if not already done by the adaptor |
| 1472 | * for the generic AC97 subsystem. |
| 1473 | */ |
| 1474 | if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) { |
| 1475 | /* |
| 1476 | * It is possible that the AC97 device is already registered to |
| 1477 | * the device subsystem. This happens when the device is created |
| 1478 | * via snd_ac97_mixer(). Currently only SoC codec that does so |
| 1479 | * is the generic AC97 glue but others migh emerge. |
| 1480 | * |
| 1481 | * In those cases we don't try to register the device again. |
| 1482 | */ |
| 1483 | if (!rtd->codec->ac97_created) |
| 1484 | return 0; |
| 1485 | |
| 1486 | ret = soc_ac97_dev_register(rtd->codec); |
| 1487 | if (ret < 0) { |
| 1488 | dev_err(rtd->codec->dev, |
| 1489 | "ASoC: AC97 device register failed: %d\n", ret); |
| 1490 | return ret; |
| 1491 | } |
| 1492 | |
| 1493 | rtd->codec->ac97_registered = 1; |
| 1494 | } |
| 1495 | return 0; |
| 1496 | } |
| 1497 | |
| 1498 | static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec) |
| 1499 | { |
| 1500 | if (codec->ac97_registered) { |
| 1501 | soc_ac97_dev_unregister(codec); |
| 1502 | codec->ac97_registered = 0; |
| 1503 | } |
| 1504 | } |
| 1505 | #endif |
| 1506 | |
| 1507 | static int soc_check_aux_dev(struct snd_soc_card *card, int num) |
| 1508 | { |
| 1509 | struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| 1510 | struct snd_soc_codec *codec; |
| 1511 | |
| 1512 | /* find CODEC from registered CODECs*/ |
| 1513 | list_for_each_entry(codec, &codec_list, list) { |
| 1514 | if (!strcmp(codec->name, aux_dev->codec_name)) |
| 1515 | return 0; |
| 1516 | } |
| 1517 | |
| 1518 | dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name); |
| 1519 | |
| 1520 | return -EPROBE_DEFER; |
| 1521 | } |
| 1522 | |
| 1523 | static int soc_probe_aux_dev(struct snd_soc_card *card, int num) |
| 1524 | { |
| 1525 | struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| 1526 | struct snd_soc_codec *codec; |
| 1527 | int ret = -ENODEV; |
| 1528 | |
| 1529 | /* find CODEC from registered CODECs*/ |
| 1530 | list_for_each_entry(codec, &codec_list, list) { |
| 1531 | if (!strcmp(codec->name, aux_dev->codec_name)) { |
| 1532 | if (codec->probed) { |
| 1533 | dev_err(codec->dev, |
| 1534 | "ASoC: codec already probed"); |
| 1535 | ret = -EBUSY; |
| 1536 | goto out; |
| 1537 | } |
| 1538 | goto found; |
| 1539 | } |
| 1540 | } |
| 1541 | /* codec not found */ |
| 1542 | dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name); |
| 1543 | return -EPROBE_DEFER; |
| 1544 | |
| 1545 | found: |
| 1546 | ret = soc_probe_codec(card, codec); |
| 1547 | if (ret < 0) |
| 1548 | return ret; |
| 1549 | |
| 1550 | ret = soc_post_component_init(card, codec, num, 1); |
| 1551 | |
| 1552 | out: |
| 1553 | return ret; |
| 1554 | } |
| 1555 | |
| 1556 | static void soc_remove_aux_dev(struct snd_soc_card *card, int num) |
| 1557 | { |
| 1558 | struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; |
| 1559 | struct snd_soc_codec *codec = rtd->codec; |
| 1560 | |
| 1561 | /* unregister the rtd device */ |
| 1562 | if (rtd->dev_registered) { |
| 1563 | device_remove_file(rtd->dev, &dev_attr_codec_reg); |
| 1564 | device_unregister(rtd->dev); |
| 1565 | rtd->dev_registered = 0; |
| 1566 | } |
| 1567 | |
| 1568 | if (codec && codec->probed) |
| 1569 | soc_remove_codec(codec); |
| 1570 | } |
| 1571 | |
| 1572 | static int snd_soc_init_codec_cache(struct snd_soc_codec *codec, |
| 1573 | enum snd_soc_compress_type compress_type) |
| 1574 | { |
| 1575 | int ret; |
| 1576 | |
| 1577 | if (codec->cache_init) |
| 1578 | return 0; |
| 1579 | |
| 1580 | /* override the compress_type if necessary */ |
| 1581 | if (compress_type && codec->compress_type != compress_type) |
| 1582 | codec->compress_type = compress_type; |
| 1583 | ret = snd_soc_cache_init(codec); |
| 1584 | if (ret < 0) { |
| 1585 | dev_err(codec->dev, "ASoC: Failed to set cache compression" |
| 1586 | " type: %d\n", ret); |
| 1587 | return ret; |
| 1588 | } |
| 1589 | codec->cache_init = 1; |
| 1590 | return 0; |
| 1591 | } |
| 1592 | |
| 1593 | static int snd_soc_instantiate_card(struct snd_soc_card *card) |
| 1594 | { |
| 1595 | struct snd_soc_codec *codec; |
| 1596 | struct snd_soc_codec_conf *codec_conf; |
| 1597 | enum snd_soc_compress_type compress_type; |
| 1598 | struct snd_soc_dai_link *dai_link; |
| 1599 | int ret, i, order, dai_fmt; |
| 1600 | |
| 1601 | mutex_lock_nested(&card->mutex, SND_SOC_CARD_CLASS_INIT); |
| 1602 | |
| 1603 | /* bind DAIs */ |
| 1604 | for (i = 0; i < card->num_links; i++) { |
| 1605 | ret = soc_bind_dai_link(card, i); |
| 1606 | if (ret != 0) |
| 1607 | goto base_error; |
| 1608 | } |
| 1609 | |
| 1610 | /* check aux_devs too */ |
| 1611 | for (i = 0; i < card->num_aux_devs; i++) { |
| 1612 | ret = soc_check_aux_dev(card, i); |
| 1613 | if (ret != 0) |
| 1614 | goto base_error; |
| 1615 | } |
| 1616 | |
| 1617 | /* initialize the register cache for each available codec */ |
| 1618 | list_for_each_entry(codec, &codec_list, list) { |
| 1619 | if (codec->cache_init) |
| 1620 | continue; |
| 1621 | /* by default we don't override the compress_type */ |
| 1622 | compress_type = 0; |
| 1623 | /* check to see if we need to override the compress_type */ |
| 1624 | for (i = 0; i < card->num_configs; ++i) { |
| 1625 | codec_conf = &card->codec_conf[i]; |
| 1626 | if (!strcmp(codec->name, codec_conf->dev_name)) { |
| 1627 | compress_type = codec_conf->compress_type; |
| 1628 | if (compress_type && compress_type |
| 1629 | != codec->compress_type) |
| 1630 | break; |
| 1631 | } |
| 1632 | } |
| 1633 | ret = snd_soc_init_codec_cache(codec, compress_type); |
| 1634 | if (ret < 0) |
| 1635 | goto base_error; |
| 1636 | } |
| 1637 | |
| 1638 | /* card bind complete so register a sound card */ |
| 1639 | ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
| 1640 | card->owner, 0, &card->snd_card); |
| 1641 | if (ret < 0) { |
| 1642 | dev_err(card->dev, "ASoC: can't create sound card for" |
| 1643 | " card %s: %d\n", card->name, ret); |
| 1644 | goto base_error; |
| 1645 | } |
| 1646 | card->snd_card->dev = card->dev; |
| 1647 | |
| 1648 | card->dapm.bias_level = SND_SOC_BIAS_OFF; |
| 1649 | card->dapm.dev = card->dev; |
| 1650 | card->dapm.card = card; |
| 1651 | list_add(&card->dapm.list, &card->dapm_list); |
| 1652 | |
| 1653 | #ifdef CONFIG_DEBUG_FS |
| 1654 | snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root); |
| 1655 | #endif |
| 1656 | |
| 1657 | #ifdef CONFIG_PM_SLEEP |
| 1658 | /* deferred resume work */ |
| 1659 | INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
| 1660 | #endif |
| 1661 | |
| 1662 | if (card->dapm_widgets) |
| 1663 | snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets, |
| 1664 | card->num_dapm_widgets); |
| 1665 | |
| 1666 | /* initialise the sound card only once */ |
| 1667 | if (card->probe) { |
| 1668 | ret = card->probe(card); |
| 1669 | if (ret < 0) |
| 1670 | goto card_probe_error; |
| 1671 | } |
| 1672 | |
| 1673 | /* probe all components used by DAI links on this card */ |
| 1674 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1675 | order++) { |
| 1676 | for (i = 0; i < card->num_links; i++) { |
| 1677 | ret = soc_probe_link_components(card, i, order); |
| 1678 | if (ret < 0) { |
| 1679 | dev_err(card->dev, |
| 1680 | "ASoC: failed to instantiate card %d\n", |
| 1681 | ret); |
| 1682 | goto probe_dai_err; |
| 1683 | } |
| 1684 | } |
| 1685 | } |
| 1686 | |
| 1687 | /* probe all DAI links on this card */ |
| 1688 | for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST; |
| 1689 | order++) { |
| 1690 | for (i = 0; i < card->num_links; i++) { |
| 1691 | ret = soc_probe_link_dais(card, i, order); |
| 1692 | if (ret < 0) { |
| 1693 | dev_err(card->dev, |
| 1694 | "ASoC: failed to instantiate card %d\n", |
| 1695 | ret); |
| 1696 | goto probe_dai_err; |
| 1697 | } |
| 1698 | } |
| 1699 | } |
| 1700 | |
| 1701 | for (i = 0; i < card->num_aux_devs; i++) { |
| 1702 | ret = soc_probe_aux_dev(card, i); |
| 1703 | if (ret < 0) { |
| 1704 | dev_err(card->dev, |
| 1705 | "ASoC: failed to add auxiliary devices %d\n", |
| 1706 | ret); |
| 1707 | goto probe_aux_dev_err; |
| 1708 | } |
| 1709 | } |
| 1710 | |
| 1711 | snd_soc_dapm_link_dai_widgets(card); |
| 1712 | |
| 1713 | if (card->controls) |
| 1714 | snd_soc_add_card_controls(card, card->controls, card->num_controls); |
| 1715 | |
| 1716 | if (card->dapm_routes) |
| 1717 | snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes, |
| 1718 | card->num_dapm_routes); |
| 1719 | |
| 1720 | snd_soc_dapm_new_widgets(&card->dapm); |
| 1721 | |
| 1722 | for (i = 0; i < card->num_links; i++) { |
| 1723 | dai_link = &card->dai_link[i]; |
| 1724 | dai_fmt = dai_link->dai_fmt; |
| 1725 | |
| 1726 | if (dai_fmt) { |
| 1727 | ret = snd_soc_dai_set_fmt(card->rtd[i].codec_dai, |
| 1728 | dai_fmt); |
| 1729 | if (ret != 0 && ret != -ENOTSUPP) |
| 1730 | dev_warn(card->rtd[i].codec_dai->dev, |
| 1731 | "ASoC: Failed to set DAI format: %d\n", |
| 1732 | ret); |
| 1733 | } |
| 1734 | |
| 1735 | /* If this is a regular CPU link there will be a platform */ |
| 1736 | if (dai_fmt && |
| 1737 | (dai_link->platform_name || dai_link->platform_of_node)) { |
| 1738 | ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai, |
| 1739 | dai_fmt); |
| 1740 | if (ret != 0 && ret != -ENOTSUPP) |
| 1741 | dev_warn(card->rtd[i].cpu_dai->dev, |
| 1742 | "ASoC: Failed to set DAI format: %d\n", |
| 1743 | ret); |
| 1744 | } else if (dai_fmt) { |
| 1745 | /* Flip the polarity for the "CPU" end */ |
| 1746 | dai_fmt &= ~SND_SOC_DAIFMT_MASTER_MASK; |
| 1747 | switch (dai_link->dai_fmt & |
| 1748 | SND_SOC_DAIFMT_MASTER_MASK) { |
| 1749 | case SND_SOC_DAIFMT_CBM_CFM: |
| 1750 | dai_fmt |= SND_SOC_DAIFMT_CBS_CFS; |
| 1751 | break; |
| 1752 | case SND_SOC_DAIFMT_CBM_CFS: |
| 1753 | dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; |
| 1754 | break; |
| 1755 | case SND_SOC_DAIFMT_CBS_CFM: |
| 1756 | dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; |
| 1757 | break; |
| 1758 | case SND_SOC_DAIFMT_CBS_CFS: |
| 1759 | dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; |
| 1760 | break; |
| 1761 | } |
| 1762 | |
| 1763 | ret = snd_soc_dai_set_fmt(card->rtd[i].cpu_dai, |
| 1764 | dai_fmt); |
| 1765 | if (ret != 0 && ret != -ENOTSUPP) |
| 1766 | dev_warn(card->rtd[i].cpu_dai->dev, |
| 1767 | "ASoC: Failed to set DAI format: %d\n", |
| 1768 | ret); |
| 1769 | } |
| 1770 | } |
| 1771 | |
| 1772 | snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), |
| 1773 | "%s", card->name); |
| 1774 | snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), |
| 1775 | "%s", card->long_name ? card->long_name : card->name); |
| 1776 | snprintf(card->snd_card->driver, sizeof(card->snd_card->driver), |
| 1777 | "%s", card->driver_name ? card->driver_name : card->name); |
| 1778 | for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) { |
| 1779 | switch (card->snd_card->driver[i]) { |
| 1780 | case '_': |
| 1781 | case '-': |
| 1782 | case '\0': |
| 1783 | break; |
| 1784 | default: |
| 1785 | if (!isalnum(card->snd_card->driver[i])) |
| 1786 | card->snd_card->driver[i] = '_'; |
| 1787 | break; |
| 1788 | } |
| 1789 | } |
| 1790 | |
| 1791 | if (card->late_probe) { |
| 1792 | ret = card->late_probe(card); |
| 1793 | if (ret < 0) { |
| 1794 | dev_err(card->dev, "ASoC: %s late_probe() failed: %d\n", |
| 1795 | card->name, ret); |
| 1796 | goto probe_aux_dev_err; |
| 1797 | } |
| 1798 | } |
| 1799 | |
| 1800 | snd_soc_dapm_new_widgets(&card->dapm); |
| 1801 | |
| 1802 | if (card->fully_routed) |
| 1803 | list_for_each_entry(codec, &card->codec_dev_list, card_list) |
| 1804 | snd_soc_dapm_auto_nc_codec_pins(codec); |
| 1805 | |
| 1806 | ret = snd_card_register(card->snd_card); |
| 1807 | if (ret < 0) { |
| 1808 | dev_err(card->dev, "ASoC: failed to register soundcard %d\n", |
| 1809 | ret); |
| 1810 | goto probe_aux_dev_err; |
| 1811 | } |
| 1812 | |
| 1813 | #ifdef CONFIG_SND_SOC_AC97_BUS |
| 1814 | /* register any AC97 codecs */ |
| 1815 | for (i = 0; i < card->num_rtd; i++) { |
| 1816 | ret = soc_register_ac97_dai_link(&card->rtd[i]); |
| 1817 | if (ret < 0) { |
| 1818 | dev_err(card->dev, "ASoC: failed to register AC97:" |
| 1819 | " %d\n", ret); |
| 1820 | while (--i >= 0) |
| 1821 | soc_unregister_ac97_dai_link(card->rtd[i].codec); |
| 1822 | goto probe_aux_dev_err; |
| 1823 | } |
| 1824 | } |
| 1825 | #endif |
| 1826 | |
| 1827 | card->instantiated = 1; |
| 1828 | snd_soc_dapm_sync(&card->dapm); |
| 1829 | mutex_unlock(&card->mutex); |
| 1830 | |
| 1831 | return 0; |
| 1832 | |
| 1833 | probe_aux_dev_err: |
| 1834 | for (i = 0; i < card->num_aux_devs; i++) |
| 1835 | soc_remove_aux_dev(card, i); |
| 1836 | |
| 1837 | probe_dai_err: |
| 1838 | soc_remove_dai_links(card); |
| 1839 | |
| 1840 | card_probe_error: |
| 1841 | if (card->remove) |
| 1842 | card->remove(card); |
| 1843 | |
| 1844 | snd_card_free(card->snd_card); |
| 1845 | |
| 1846 | base_error: |
| 1847 | mutex_unlock(&card->mutex); |
| 1848 | |
| 1849 | return ret; |
| 1850 | } |
| 1851 | |
| 1852 | /* probes a new socdev */ |
| 1853 | static int soc_probe(struct platform_device *pdev) |
| 1854 | { |
| 1855 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 1856 | |
| 1857 | /* |
| 1858 | * no card, so machine driver should be registering card |
| 1859 | * we should not be here in that case so ret error |
| 1860 | */ |
| 1861 | if (!card) |
| 1862 | return -EINVAL; |
| 1863 | |
| 1864 | dev_warn(&pdev->dev, |
| 1865 | "ASoC: machine %s should use snd_soc_register_card()\n", |
| 1866 | card->name); |
| 1867 | |
| 1868 | /* Bodge while we unpick instantiation */ |
| 1869 | card->dev = &pdev->dev; |
| 1870 | |
| 1871 | return snd_soc_register_card(card); |
| 1872 | } |
| 1873 | |
| 1874 | static int soc_cleanup_card_resources(struct snd_soc_card *card) |
| 1875 | { |
| 1876 | int i; |
| 1877 | |
| 1878 | /* make sure any delayed work runs */ |
| 1879 | for (i = 0; i < card->num_rtd; i++) { |
| 1880 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 1881 | flush_delayed_work(&rtd->delayed_work); |
| 1882 | } |
| 1883 | |
| 1884 | /* remove auxiliary devices */ |
| 1885 | for (i = 0; i < card->num_aux_devs; i++) |
| 1886 | soc_remove_aux_dev(card, i); |
| 1887 | |
| 1888 | /* remove and free each DAI */ |
| 1889 | soc_remove_dai_links(card); |
| 1890 | |
| 1891 | soc_cleanup_card_debugfs(card); |
| 1892 | |
| 1893 | /* remove the card */ |
| 1894 | if (card->remove) |
| 1895 | card->remove(card); |
| 1896 | |
| 1897 | snd_soc_dapm_free(&card->dapm); |
| 1898 | |
| 1899 | snd_card_free(card->snd_card); |
| 1900 | return 0; |
| 1901 | |
| 1902 | } |
| 1903 | |
| 1904 | /* removes a socdev */ |
| 1905 | static int soc_remove(struct platform_device *pdev) |
| 1906 | { |
| 1907 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 1908 | |
| 1909 | snd_soc_unregister_card(card); |
| 1910 | return 0; |
| 1911 | } |
| 1912 | |
| 1913 | int snd_soc_poweroff(struct device *dev) |
| 1914 | { |
| 1915 | struct snd_soc_card *card = dev_get_drvdata(dev); |
| 1916 | int i; |
| 1917 | |
| 1918 | if (!card->instantiated) |
| 1919 | return 0; |
| 1920 | |
| 1921 | /* Flush out pmdown_time work - we actually do want to run it |
| 1922 | * now, we're shutting down so no imminent restart. */ |
| 1923 | for (i = 0; i < card->num_rtd; i++) { |
| 1924 | struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| 1925 | flush_delayed_work(&rtd->delayed_work); |
| 1926 | } |
| 1927 | |
| 1928 | snd_soc_dapm_shutdown(card); |
| 1929 | |
| 1930 | return 0; |
| 1931 | } |
| 1932 | EXPORT_SYMBOL_GPL(snd_soc_poweroff); |
| 1933 | |
| 1934 | const struct dev_pm_ops snd_soc_pm_ops = { |
| 1935 | .suspend = snd_soc_suspend, |
| 1936 | .resume = snd_soc_resume, |
| 1937 | .freeze = snd_soc_suspend, |
| 1938 | .thaw = snd_soc_resume, |
| 1939 | .poweroff = snd_soc_poweroff, |
| 1940 | .restore = snd_soc_resume, |
| 1941 | }; |
| 1942 | EXPORT_SYMBOL_GPL(snd_soc_pm_ops); |
| 1943 | |
| 1944 | /* ASoC platform driver */ |
| 1945 | static struct platform_driver soc_driver = { |
| 1946 | .driver = { |
| 1947 | .name = "soc-audio", |
| 1948 | .owner = THIS_MODULE, |
| 1949 | .pm = &snd_soc_pm_ops, |
| 1950 | }, |
| 1951 | .probe = soc_probe, |
| 1952 | .remove = soc_remove, |
| 1953 | }; |
| 1954 | |
| 1955 | /** |
| 1956 | * snd_soc_codec_volatile_register: Report if a register is volatile. |
| 1957 | * |
| 1958 | * @codec: CODEC to query. |
| 1959 | * @reg: Register to query. |
| 1960 | * |
| 1961 | * Boolean function indiciating if a CODEC register is volatile. |
| 1962 | */ |
| 1963 | int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, |
| 1964 | unsigned int reg) |
| 1965 | { |
| 1966 | if (codec->volatile_register) |
| 1967 | return codec->volatile_register(codec, reg); |
| 1968 | else |
| 1969 | return 0; |
| 1970 | } |
| 1971 | EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); |
| 1972 | |
| 1973 | /** |
| 1974 | * snd_soc_codec_readable_register: Report if a register is readable. |
| 1975 | * |
| 1976 | * @codec: CODEC to query. |
| 1977 | * @reg: Register to query. |
| 1978 | * |
| 1979 | * Boolean function indicating if a CODEC register is readable. |
| 1980 | */ |
| 1981 | int snd_soc_codec_readable_register(struct snd_soc_codec *codec, |
| 1982 | unsigned int reg) |
| 1983 | { |
| 1984 | if (codec->readable_register) |
| 1985 | return codec->readable_register(codec, reg); |
| 1986 | else |
| 1987 | return 1; |
| 1988 | } |
| 1989 | EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register); |
| 1990 | |
| 1991 | /** |
| 1992 | * snd_soc_codec_writable_register: Report if a register is writable. |
| 1993 | * |
| 1994 | * @codec: CODEC to query. |
| 1995 | * @reg: Register to query. |
| 1996 | * |
| 1997 | * Boolean function indicating if a CODEC register is writable. |
| 1998 | */ |
| 1999 | int snd_soc_codec_writable_register(struct snd_soc_codec *codec, |
| 2000 | unsigned int reg) |
| 2001 | { |
| 2002 | if (codec->writable_register) |
| 2003 | return codec->writable_register(codec, reg); |
| 2004 | else |
| 2005 | return 1; |
| 2006 | } |
| 2007 | EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register); |
| 2008 | |
| 2009 | int snd_soc_platform_read(struct snd_soc_platform *platform, |
| 2010 | unsigned int reg) |
| 2011 | { |
| 2012 | unsigned int ret; |
| 2013 | |
| 2014 | if (!platform->driver->read) { |
| 2015 | dev_err(platform->dev, "ASoC: platform has no read back\n"); |
| 2016 | return -1; |
| 2017 | } |
| 2018 | |
| 2019 | ret = platform->driver->read(platform, reg); |
| 2020 | dev_dbg(platform->dev, "read %x => %x\n", reg, ret); |
| 2021 | trace_snd_soc_preg_read(platform, reg, ret); |
| 2022 | |
| 2023 | return ret; |
| 2024 | } |
| 2025 | EXPORT_SYMBOL_GPL(snd_soc_platform_read); |
| 2026 | |
| 2027 | int snd_soc_platform_write(struct snd_soc_platform *platform, |
| 2028 | unsigned int reg, unsigned int val) |
| 2029 | { |
| 2030 | if (!platform->driver->write) { |
| 2031 | dev_err(platform->dev, "ASoC: platform has no write back\n"); |
| 2032 | return -1; |
| 2033 | } |
| 2034 | |
| 2035 | dev_dbg(platform->dev, "write %x = %x\n", reg, val); |
| 2036 | trace_snd_soc_preg_write(platform, reg, val); |
| 2037 | return platform->driver->write(platform, reg, val); |
| 2038 | } |
| 2039 | EXPORT_SYMBOL_GPL(snd_soc_platform_write); |
| 2040 | |
| 2041 | /** |
| 2042 | * snd_soc_new_ac97_codec - initailise AC97 device |
| 2043 | * @codec: audio codec |
| 2044 | * @ops: AC97 bus operations |
| 2045 | * @num: AC97 codec number |
| 2046 | * |
| 2047 | * Initialises AC97 codec resources for use by ad-hoc devices only. |
| 2048 | */ |
| 2049 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, |
| 2050 | struct snd_ac97_bus_ops *ops, int num) |
| 2051 | { |
| 2052 | mutex_lock(&codec->mutex); |
| 2053 | |
| 2054 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); |
| 2055 | if (codec->ac97 == NULL) { |
| 2056 | mutex_unlock(&codec->mutex); |
| 2057 | return -ENOMEM; |
| 2058 | } |
| 2059 | |
| 2060 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); |
| 2061 | if (codec->ac97->bus == NULL) { |
| 2062 | kfree(codec->ac97); |
| 2063 | codec->ac97 = NULL; |
| 2064 | mutex_unlock(&codec->mutex); |
| 2065 | return -ENOMEM; |
| 2066 | } |
| 2067 | |
| 2068 | codec->ac97->bus->ops = ops; |
| 2069 | codec->ac97->num = num; |
| 2070 | |
| 2071 | /* |
| 2072 | * Mark the AC97 device to be created by us. This way we ensure that the |
| 2073 | * device will be registered with the device subsystem later on. |
| 2074 | */ |
| 2075 | codec->ac97_created = 1; |
| 2076 | |
| 2077 | mutex_unlock(&codec->mutex); |
| 2078 | return 0; |
| 2079 | } |
| 2080 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); |
| 2081 | |
| 2082 | /** |
| 2083 | * snd_soc_free_ac97_codec - free AC97 codec device |
| 2084 | * @codec: audio codec |
| 2085 | * |
| 2086 | * Frees AC97 codec device resources. |
| 2087 | */ |
| 2088 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) |
| 2089 | { |
| 2090 | mutex_lock(&codec->mutex); |
| 2091 | #ifdef CONFIG_SND_SOC_AC97_BUS |
| 2092 | soc_unregister_ac97_dai_link(codec); |
| 2093 | #endif |
| 2094 | kfree(codec->ac97->bus); |
| 2095 | kfree(codec->ac97); |
| 2096 | codec->ac97 = NULL; |
| 2097 | codec->ac97_created = 0; |
| 2098 | mutex_unlock(&codec->mutex); |
| 2099 | } |
| 2100 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); |
| 2101 | |
| 2102 | unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg) |
| 2103 | { |
| 2104 | unsigned int ret; |
| 2105 | |
| 2106 | if (codec->read) { |
| 2107 | ret = codec->read(codec, reg); |
| 2108 | dev_dbg(codec->dev, "read %x => %x\n", reg, ret); |
| 2109 | trace_snd_soc_reg_read(codec, reg, ret); |
| 2110 | } |
| 2111 | else |
| 2112 | ret = -EIO; |
| 2113 | |
| 2114 | return ret; |
| 2115 | } |
| 2116 | EXPORT_SYMBOL_GPL(snd_soc_read); |
| 2117 | |
| 2118 | unsigned int snd_soc_write(struct snd_soc_codec *codec, |
| 2119 | unsigned int reg, unsigned int val) |
| 2120 | { |
| 2121 | if (codec->write) { |
| 2122 | dev_dbg(codec->dev, "write %x = %x\n", reg, val); |
| 2123 | trace_snd_soc_reg_write(codec, reg, val); |
| 2124 | return codec->write(codec, reg, val); |
| 2125 | } |
| 2126 | else |
| 2127 | return -EIO; |
| 2128 | } |
| 2129 | EXPORT_SYMBOL_GPL(snd_soc_write); |
| 2130 | |
| 2131 | unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec, |
| 2132 | unsigned int reg, const void *data, size_t len) |
| 2133 | { |
| 2134 | return codec->bulk_write_raw(codec, reg, data, len); |
| 2135 | } |
| 2136 | EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw); |
| 2137 | |
| 2138 | /** |
| 2139 | * snd_soc_update_bits - update codec register bits |
| 2140 | * @codec: audio codec |
| 2141 | * @reg: codec register |
| 2142 | * @mask: register mask |
| 2143 | * @value: new value |
| 2144 | * |
| 2145 | * Writes new register value. |
| 2146 | * |
| 2147 | * Returns 1 for change, 0 for no change, or negative error code. |
| 2148 | */ |
| 2149 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, |
| 2150 | unsigned int mask, unsigned int value) |
| 2151 | { |
| 2152 | bool change; |
| 2153 | unsigned int old, new; |
| 2154 | int ret; |
| 2155 | |
| 2156 | if (codec->using_regmap) { |
| 2157 | ret = regmap_update_bits_check(codec->control_data, reg, |
| 2158 | mask, value, &change); |
| 2159 | } else { |
| 2160 | ret = snd_soc_read(codec, reg); |
| 2161 | if (ret < 0) |
| 2162 | return ret; |
| 2163 | |
| 2164 | old = ret; |
| 2165 | new = (old & ~mask) | (value & mask); |
| 2166 | change = old != new; |
| 2167 | if (change) |
| 2168 | ret = snd_soc_write(codec, reg, new); |
| 2169 | } |
| 2170 | |
| 2171 | if (ret < 0) |
| 2172 | return ret; |
| 2173 | |
| 2174 | return change; |
| 2175 | } |
| 2176 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); |
| 2177 | |
| 2178 | /** |
| 2179 | * snd_soc_update_bits_locked - update codec register bits |
| 2180 | * @codec: audio codec |
| 2181 | * @reg: codec register |
| 2182 | * @mask: register mask |
| 2183 | * @value: new value |
| 2184 | * |
| 2185 | * Writes new register value, and takes the codec mutex. |
| 2186 | * |
| 2187 | * Returns 1 for change else 0. |
| 2188 | */ |
| 2189 | int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
| 2190 | unsigned short reg, unsigned int mask, |
| 2191 | unsigned int value) |
| 2192 | { |
| 2193 | int change; |
| 2194 | |
| 2195 | mutex_lock(&codec->mutex); |
| 2196 | change = snd_soc_update_bits(codec, reg, mask, value); |
| 2197 | mutex_unlock(&codec->mutex); |
| 2198 | |
| 2199 | return change; |
| 2200 | } |
| 2201 | EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
| 2202 | |
| 2203 | /** |
| 2204 | * snd_soc_test_bits - test register for change |
| 2205 | * @codec: audio codec |
| 2206 | * @reg: codec register |
| 2207 | * @mask: register mask |
| 2208 | * @value: new value |
| 2209 | * |
| 2210 | * Tests a register with a new value and checks if the new value is |
| 2211 | * different from the old value. |
| 2212 | * |
| 2213 | * Returns 1 for change else 0. |
| 2214 | */ |
| 2215 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, |
| 2216 | unsigned int mask, unsigned int value) |
| 2217 | { |
| 2218 | int change; |
| 2219 | unsigned int old, new; |
| 2220 | |
| 2221 | old = snd_soc_read(codec, reg); |
| 2222 | new = (old & ~mask) | value; |
| 2223 | change = old != new; |
| 2224 | |
| 2225 | return change; |
| 2226 | } |
| 2227 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); |
| 2228 | |
| 2229 | /** |
| 2230 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters |
| 2231 | * @substream: the pcm substream |
| 2232 | * @hw: the hardware parameters |
| 2233 | * |
| 2234 | * Sets the substream runtime hardware parameters. |
| 2235 | */ |
| 2236 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, |
| 2237 | const struct snd_pcm_hardware *hw) |
| 2238 | { |
| 2239 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 2240 | runtime->hw.info = hw->info; |
| 2241 | runtime->hw.formats = hw->formats; |
| 2242 | runtime->hw.period_bytes_min = hw->period_bytes_min; |
| 2243 | runtime->hw.period_bytes_max = hw->period_bytes_max; |
| 2244 | runtime->hw.periods_min = hw->periods_min; |
| 2245 | runtime->hw.periods_max = hw->periods_max; |
| 2246 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; |
| 2247 | runtime->hw.fifo_size = hw->fifo_size; |
| 2248 | return 0; |
| 2249 | } |
| 2250 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); |
| 2251 | |
| 2252 | /** |
| 2253 | * snd_soc_cnew - create new control |
| 2254 | * @_template: control template |
| 2255 | * @data: control private data |
| 2256 | * @long_name: control long name |
| 2257 | * @prefix: control name prefix |
| 2258 | * |
| 2259 | * Create a new mixer control from a template control. |
| 2260 | * |
| 2261 | * Returns 0 for success, else error. |
| 2262 | */ |
| 2263 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, |
| 2264 | void *data, const char *long_name, |
| 2265 | const char *prefix) |
| 2266 | { |
| 2267 | struct snd_kcontrol_new template; |
| 2268 | struct snd_kcontrol *kcontrol; |
| 2269 | char *name = NULL; |
| 2270 | int name_len; |
| 2271 | |
| 2272 | memcpy(&template, _template, sizeof(template)); |
| 2273 | template.index = 0; |
| 2274 | |
| 2275 | if (!long_name) |
| 2276 | long_name = template.name; |
| 2277 | |
| 2278 | if (prefix) { |
| 2279 | name_len = strlen(long_name) + strlen(prefix) + 2; |
| 2280 | name = kmalloc(name_len, GFP_KERNEL); |
| 2281 | if (!name) |
| 2282 | return NULL; |
| 2283 | |
| 2284 | snprintf(name, name_len, "%s %s", prefix, long_name); |
| 2285 | |
| 2286 | template.name = name; |
| 2287 | } else { |
| 2288 | template.name = long_name; |
| 2289 | } |
| 2290 | |
| 2291 | kcontrol = snd_ctl_new1(&template, data); |
| 2292 | |
| 2293 | kfree(name); |
| 2294 | |
| 2295 | return kcontrol; |
| 2296 | } |
| 2297 | EXPORT_SYMBOL_GPL(snd_soc_cnew); |
| 2298 | |
| 2299 | static int snd_soc_add_controls(struct snd_card *card, struct device *dev, |
| 2300 | const struct snd_kcontrol_new *controls, int num_controls, |
| 2301 | const char *prefix, void *data) |
| 2302 | { |
| 2303 | int err, i; |
| 2304 | |
| 2305 | for (i = 0; i < num_controls; i++) { |
| 2306 | const struct snd_kcontrol_new *control = &controls[i]; |
| 2307 | err = snd_ctl_add(card, snd_soc_cnew(control, data, |
| 2308 | control->name, prefix)); |
| 2309 | if (err < 0) { |
| 2310 | dev_err(dev, "ASoC: Failed to add %s: %d\n", |
| 2311 | control->name, err); |
| 2312 | return err; |
| 2313 | } |
| 2314 | } |
| 2315 | |
| 2316 | return 0; |
| 2317 | } |
| 2318 | |
| 2319 | /** |
| 2320 | * snd_soc_add_codec_controls - add an array of controls to a codec. |
| 2321 | * Convenience function to add a list of controls. Many codecs were |
| 2322 | * duplicating this code. |
| 2323 | * |
| 2324 | * @codec: codec to add controls to |
| 2325 | * @controls: array of controls to add |
| 2326 | * @num_controls: number of elements in the array |
| 2327 | * |
| 2328 | * Return 0 for success, else error. |
| 2329 | */ |
| 2330 | int snd_soc_add_codec_controls(struct snd_soc_codec *codec, |
| 2331 | const struct snd_kcontrol_new *controls, int num_controls) |
| 2332 | { |
| 2333 | struct snd_card *card = codec->card->snd_card; |
| 2334 | |
| 2335 | return snd_soc_add_controls(card, codec->dev, controls, num_controls, |
| 2336 | codec->name_prefix, codec); |
| 2337 | } |
| 2338 | EXPORT_SYMBOL_GPL(snd_soc_add_codec_controls); |
| 2339 | |
| 2340 | /** |
| 2341 | * snd_soc_add_platform_controls - add an array of controls to a platform. |
| 2342 | * Convenience function to add a list of controls. |
| 2343 | * |
| 2344 | * @platform: platform to add controls to |
| 2345 | * @controls: array of controls to add |
| 2346 | * @num_controls: number of elements in the array |
| 2347 | * |
| 2348 | * Return 0 for success, else error. |
| 2349 | */ |
| 2350 | int snd_soc_add_platform_controls(struct snd_soc_platform *platform, |
| 2351 | const struct snd_kcontrol_new *controls, int num_controls) |
| 2352 | { |
| 2353 | struct snd_card *card = platform->card->snd_card; |
| 2354 | |
| 2355 | return snd_soc_add_controls(card, platform->dev, controls, num_controls, |
| 2356 | NULL, platform); |
| 2357 | } |
| 2358 | EXPORT_SYMBOL_GPL(snd_soc_add_platform_controls); |
| 2359 | |
| 2360 | /** |
| 2361 | * snd_soc_add_card_controls - add an array of controls to a SoC card. |
| 2362 | * Convenience function to add a list of controls. |
| 2363 | * |
| 2364 | * @soc_card: SoC card to add controls to |
| 2365 | * @controls: array of controls to add |
| 2366 | * @num_controls: number of elements in the array |
| 2367 | * |
| 2368 | * Return 0 for success, else error. |
| 2369 | */ |
| 2370 | int snd_soc_add_card_controls(struct snd_soc_card *soc_card, |
| 2371 | const struct snd_kcontrol_new *controls, int num_controls) |
| 2372 | { |
| 2373 | struct snd_card *card = soc_card->snd_card; |
| 2374 | |
| 2375 | return snd_soc_add_controls(card, soc_card->dev, controls, num_controls, |
| 2376 | NULL, soc_card); |
| 2377 | } |
| 2378 | EXPORT_SYMBOL_GPL(snd_soc_add_card_controls); |
| 2379 | |
| 2380 | /** |
| 2381 | * snd_soc_add_dai_controls - add an array of controls to a DAI. |
| 2382 | * Convienience function to add a list of controls. |
| 2383 | * |
| 2384 | * @dai: DAI to add controls to |
| 2385 | * @controls: array of controls to add |
| 2386 | * @num_controls: number of elements in the array |
| 2387 | * |
| 2388 | * Return 0 for success, else error. |
| 2389 | */ |
| 2390 | int snd_soc_add_dai_controls(struct snd_soc_dai *dai, |
| 2391 | const struct snd_kcontrol_new *controls, int num_controls) |
| 2392 | { |
| 2393 | struct snd_card *card = dai->card->snd_card; |
| 2394 | |
| 2395 | return snd_soc_add_controls(card, dai->dev, controls, num_controls, |
| 2396 | NULL, dai); |
| 2397 | } |
| 2398 | EXPORT_SYMBOL_GPL(snd_soc_add_dai_controls); |
| 2399 | |
| 2400 | /** |
| 2401 | * snd_soc_info_enum_double - enumerated double mixer info callback |
| 2402 | * @kcontrol: mixer control |
| 2403 | * @uinfo: control element information |
| 2404 | * |
| 2405 | * Callback to provide information about a double enumerated |
| 2406 | * mixer control. |
| 2407 | * |
| 2408 | * Returns 0 for success. |
| 2409 | */ |
| 2410 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, |
| 2411 | struct snd_ctl_elem_info *uinfo) |
| 2412 | { |
| 2413 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 2414 | |
| 2415 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
| 2416 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; |
| 2417 | uinfo->value.enumerated.items = e->max; |
| 2418 | |
| 2419 | if (uinfo->value.enumerated.item > e->max - 1) |
| 2420 | uinfo->value.enumerated.item = e->max - 1; |
| 2421 | strcpy(uinfo->value.enumerated.name, |
| 2422 | e->texts[uinfo->value.enumerated.item]); |
| 2423 | return 0; |
| 2424 | } |
| 2425 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); |
| 2426 | |
| 2427 | /** |
| 2428 | * snd_soc_get_enum_double - enumerated double mixer get callback |
| 2429 | * @kcontrol: mixer control |
| 2430 | * @ucontrol: control element information |
| 2431 | * |
| 2432 | * Callback to get the value of a double enumerated mixer. |
| 2433 | * |
| 2434 | * Returns 0 for success. |
| 2435 | */ |
| 2436 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, |
| 2437 | struct snd_ctl_elem_value *ucontrol) |
| 2438 | { |
| 2439 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2440 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 2441 | unsigned int val; |
| 2442 | |
| 2443 | val = snd_soc_read(codec, e->reg); |
| 2444 | ucontrol->value.enumerated.item[0] |
| 2445 | = (val >> e->shift_l) & e->mask; |
| 2446 | if (e->shift_l != e->shift_r) |
| 2447 | ucontrol->value.enumerated.item[1] = |
| 2448 | (val >> e->shift_r) & e->mask; |
| 2449 | |
| 2450 | return 0; |
| 2451 | } |
| 2452 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); |
| 2453 | |
| 2454 | /** |
| 2455 | * snd_soc_put_enum_double - enumerated double mixer put callback |
| 2456 | * @kcontrol: mixer control |
| 2457 | * @ucontrol: control element information |
| 2458 | * |
| 2459 | * Callback to set the value of a double enumerated mixer. |
| 2460 | * |
| 2461 | * Returns 0 for success. |
| 2462 | */ |
| 2463 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, |
| 2464 | struct snd_ctl_elem_value *ucontrol) |
| 2465 | { |
| 2466 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2467 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 2468 | unsigned int val; |
| 2469 | unsigned int mask; |
| 2470 | |
| 2471 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
| 2472 | return -EINVAL; |
| 2473 | val = ucontrol->value.enumerated.item[0] << e->shift_l; |
| 2474 | mask = e->mask << e->shift_l; |
| 2475 | if (e->shift_l != e->shift_r) { |
| 2476 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
| 2477 | return -EINVAL; |
| 2478 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; |
| 2479 | mask |= e->mask << e->shift_r; |
| 2480 | } |
| 2481 | |
| 2482 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
| 2483 | } |
| 2484 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); |
| 2485 | |
| 2486 | /** |
| 2487 | * snd_soc_get_value_enum_double - semi enumerated double mixer get callback |
| 2488 | * @kcontrol: mixer control |
| 2489 | * @ucontrol: control element information |
| 2490 | * |
| 2491 | * Callback to get the value of a double semi enumerated mixer. |
| 2492 | * |
| 2493 | * Semi enumerated mixer: the enumerated items are referred as values. Can be |
| 2494 | * used for handling bitfield coded enumeration for example. |
| 2495 | * |
| 2496 | * Returns 0 for success. |
| 2497 | */ |
| 2498 | int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, |
| 2499 | struct snd_ctl_elem_value *ucontrol) |
| 2500 | { |
| 2501 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2502 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 2503 | unsigned int reg_val, val, mux; |
| 2504 | |
| 2505 | reg_val = snd_soc_read(codec, e->reg); |
| 2506 | val = (reg_val >> e->shift_l) & e->mask; |
| 2507 | for (mux = 0; mux < e->max; mux++) { |
| 2508 | if (val == e->values[mux]) |
| 2509 | break; |
| 2510 | } |
| 2511 | ucontrol->value.enumerated.item[0] = mux; |
| 2512 | if (e->shift_l != e->shift_r) { |
| 2513 | val = (reg_val >> e->shift_r) & e->mask; |
| 2514 | for (mux = 0; mux < e->max; mux++) { |
| 2515 | if (val == e->values[mux]) |
| 2516 | break; |
| 2517 | } |
| 2518 | ucontrol->value.enumerated.item[1] = mux; |
| 2519 | } |
| 2520 | |
| 2521 | return 0; |
| 2522 | } |
| 2523 | EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); |
| 2524 | |
| 2525 | /** |
| 2526 | * snd_soc_put_value_enum_double - semi enumerated double mixer put callback |
| 2527 | * @kcontrol: mixer control |
| 2528 | * @ucontrol: control element information |
| 2529 | * |
| 2530 | * Callback to set the value of a double semi enumerated mixer. |
| 2531 | * |
| 2532 | * Semi enumerated mixer: the enumerated items are referred as values. Can be |
| 2533 | * used for handling bitfield coded enumeration for example. |
| 2534 | * |
| 2535 | * Returns 0 for success. |
| 2536 | */ |
| 2537 | int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, |
| 2538 | struct snd_ctl_elem_value *ucontrol) |
| 2539 | { |
| 2540 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2541 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 2542 | unsigned int val; |
| 2543 | unsigned int mask; |
| 2544 | |
| 2545 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
| 2546 | return -EINVAL; |
| 2547 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; |
| 2548 | mask = e->mask << e->shift_l; |
| 2549 | if (e->shift_l != e->shift_r) { |
| 2550 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
| 2551 | return -EINVAL; |
| 2552 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; |
| 2553 | mask |= e->mask << e->shift_r; |
| 2554 | } |
| 2555 | |
| 2556 | return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
| 2557 | } |
| 2558 | EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); |
| 2559 | |
| 2560 | /** |
| 2561 | * snd_soc_info_enum_ext - external enumerated single mixer info callback |
| 2562 | * @kcontrol: mixer control |
| 2563 | * @uinfo: control element information |
| 2564 | * |
| 2565 | * Callback to provide information about an external enumerated |
| 2566 | * single mixer. |
| 2567 | * |
| 2568 | * Returns 0 for success. |
| 2569 | */ |
| 2570 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, |
| 2571 | struct snd_ctl_elem_info *uinfo) |
| 2572 | { |
| 2573 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| 2574 | |
| 2575 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
| 2576 | uinfo->count = 1; |
| 2577 | uinfo->value.enumerated.items = e->max; |
| 2578 | |
| 2579 | if (uinfo->value.enumerated.item > e->max - 1) |
| 2580 | uinfo->value.enumerated.item = e->max - 1; |
| 2581 | strcpy(uinfo->value.enumerated.name, |
| 2582 | e->texts[uinfo->value.enumerated.item]); |
| 2583 | return 0; |
| 2584 | } |
| 2585 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); |
| 2586 | |
| 2587 | /** |
| 2588 | * snd_soc_info_volsw_ext - external single mixer info callback |
| 2589 | * @kcontrol: mixer control |
| 2590 | * @uinfo: control element information |
| 2591 | * |
| 2592 | * Callback to provide information about a single external mixer control. |
| 2593 | * |
| 2594 | * Returns 0 for success. |
| 2595 | */ |
| 2596 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, |
| 2597 | struct snd_ctl_elem_info *uinfo) |
| 2598 | { |
| 2599 | int max = kcontrol->private_value; |
| 2600 | |
| 2601 | if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
| 2602 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| 2603 | else |
| 2604 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 2605 | |
| 2606 | uinfo->count = 1; |
| 2607 | uinfo->value.integer.min = 0; |
| 2608 | uinfo->value.integer.max = max; |
| 2609 | return 0; |
| 2610 | } |
| 2611 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); |
| 2612 | |
| 2613 | /** |
| 2614 | * snd_soc_info_volsw - single mixer info callback |
| 2615 | * @kcontrol: mixer control |
| 2616 | * @uinfo: control element information |
| 2617 | * |
| 2618 | * Callback to provide information about a single mixer control, or a double |
| 2619 | * mixer control that spans 2 registers. |
| 2620 | * |
| 2621 | * Returns 0 for success. |
| 2622 | */ |
| 2623 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, |
| 2624 | struct snd_ctl_elem_info *uinfo) |
| 2625 | { |
| 2626 | struct soc_mixer_control *mc = |
| 2627 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2628 | int platform_max; |
| 2629 | |
| 2630 | if (!mc->platform_max) |
| 2631 | mc->platform_max = mc->max; |
| 2632 | platform_max = mc->platform_max; |
| 2633 | |
| 2634 | if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) |
| 2635 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| 2636 | else |
| 2637 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 2638 | |
| 2639 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
| 2640 | uinfo->value.integer.min = 0; |
| 2641 | uinfo->value.integer.max = platform_max; |
| 2642 | return 0; |
| 2643 | } |
| 2644 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); |
| 2645 | |
| 2646 | /** |
| 2647 | * snd_soc_get_volsw - single mixer get callback |
| 2648 | * @kcontrol: mixer control |
| 2649 | * @ucontrol: control element information |
| 2650 | * |
| 2651 | * Callback to get the value of a single mixer control, or a double mixer |
| 2652 | * control that spans 2 registers. |
| 2653 | * |
| 2654 | * Returns 0 for success. |
| 2655 | */ |
| 2656 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, |
| 2657 | struct snd_ctl_elem_value *ucontrol) |
| 2658 | { |
| 2659 | struct soc_mixer_control *mc = |
| 2660 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2661 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2662 | unsigned int reg = mc->reg; |
| 2663 | unsigned int reg2 = mc->rreg; |
| 2664 | unsigned int shift = mc->shift; |
| 2665 | unsigned int rshift = mc->rshift; |
| 2666 | int max = mc->max; |
| 2667 | unsigned int mask = (1 << fls(max)) - 1; |
| 2668 | unsigned int invert = mc->invert; |
| 2669 | |
| 2670 | ucontrol->value.integer.value[0] = |
| 2671 | (snd_soc_read(codec, reg) >> shift) & mask; |
| 2672 | if (invert) |
| 2673 | ucontrol->value.integer.value[0] = |
| 2674 | max - ucontrol->value.integer.value[0]; |
| 2675 | |
| 2676 | if (snd_soc_volsw_is_stereo(mc)) { |
| 2677 | if (reg == reg2) |
| 2678 | ucontrol->value.integer.value[1] = |
| 2679 | (snd_soc_read(codec, reg) >> rshift) & mask; |
| 2680 | else |
| 2681 | ucontrol->value.integer.value[1] = |
| 2682 | (snd_soc_read(codec, reg2) >> shift) & mask; |
| 2683 | if (invert) |
| 2684 | ucontrol->value.integer.value[1] = |
| 2685 | max - ucontrol->value.integer.value[1]; |
| 2686 | } |
| 2687 | |
| 2688 | return 0; |
| 2689 | } |
| 2690 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); |
| 2691 | |
| 2692 | /** |
| 2693 | * snd_soc_put_volsw - single mixer put callback |
| 2694 | * @kcontrol: mixer control |
| 2695 | * @ucontrol: control element information |
| 2696 | * |
| 2697 | * Callback to set the value of a single mixer control, or a double mixer |
| 2698 | * control that spans 2 registers. |
| 2699 | * |
| 2700 | * Returns 0 for success. |
| 2701 | */ |
| 2702 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, |
| 2703 | struct snd_ctl_elem_value *ucontrol) |
| 2704 | { |
| 2705 | struct soc_mixer_control *mc = |
| 2706 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2707 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2708 | unsigned int reg = mc->reg; |
| 2709 | unsigned int reg2 = mc->rreg; |
| 2710 | unsigned int shift = mc->shift; |
| 2711 | unsigned int rshift = mc->rshift; |
| 2712 | int max = mc->max; |
| 2713 | unsigned int mask = (1 << fls(max)) - 1; |
| 2714 | unsigned int invert = mc->invert; |
| 2715 | int err; |
| 2716 | bool type_2r = 0; |
| 2717 | unsigned int val2 = 0; |
| 2718 | unsigned int val, val_mask; |
| 2719 | |
| 2720 | val = (ucontrol->value.integer.value[0] & mask); |
| 2721 | if (invert) |
| 2722 | val = max - val; |
| 2723 | val_mask = mask << shift; |
| 2724 | val = val << shift; |
| 2725 | if (snd_soc_volsw_is_stereo(mc)) { |
| 2726 | val2 = (ucontrol->value.integer.value[1] & mask); |
| 2727 | if (invert) |
| 2728 | val2 = max - val2; |
| 2729 | if (reg == reg2) { |
| 2730 | val_mask |= mask << rshift; |
| 2731 | val |= val2 << rshift; |
| 2732 | } else { |
| 2733 | val2 = val2 << shift; |
| 2734 | type_2r = 1; |
| 2735 | } |
| 2736 | } |
| 2737 | err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| 2738 | if (err < 0) |
| 2739 | return err; |
| 2740 | |
| 2741 | if (type_2r) |
| 2742 | err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
| 2743 | |
| 2744 | return err; |
| 2745 | } |
| 2746 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); |
| 2747 | |
| 2748 | /** |
| 2749 | * snd_soc_get_volsw_sx - single mixer get callback |
| 2750 | * @kcontrol: mixer control |
| 2751 | * @ucontrol: control element information |
| 2752 | * |
| 2753 | * Callback to get the value of a single mixer control, or a double mixer |
| 2754 | * control that spans 2 registers. |
| 2755 | * |
| 2756 | * Returns 0 for success. |
| 2757 | */ |
| 2758 | int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol, |
| 2759 | struct snd_ctl_elem_value *ucontrol) |
| 2760 | { |
| 2761 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2762 | struct soc_mixer_control *mc = |
| 2763 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2764 | |
| 2765 | unsigned int reg = mc->reg; |
| 2766 | unsigned int reg2 = mc->rreg; |
| 2767 | unsigned int shift = mc->shift; |
| 2768 | unsigned int rshift = mc->rshift; |
| 2769 | int max = mc->max; |
| 2770 | int min = mc->min; |
| 2771 | int mask = (1 << (fls(min + max) - 1)) - 1; |
| 2772 | |
| 2773 | ucontrol->value.integer.value[0] = |
| 2774 | ((snd_soc_read(codec, reg) >> shift) - min) & mask; |
| 2775 | |
| 2776 | if (snd_soc_volsw_is_stereo(mc)) |
| 2777 | ucontrol->value.integer.value[1] = |
| 2778 | ((snd_soc_read(codec, reg2) >> rshift) - min) & mask; |
| 2779 | |
| 2780 | return 0; |
| 2781 | } |
| 2782 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_sx); |
| 2783 | |
| 2784 | /** |
| 2785 | * snd_soc_put_volsw_sx - double mixer set callback |
| 2786 | * @kcontrol: mixer control |
| 2787 | * @uinfo: control element information |
| 2788 | * |
| 2789 | * Callback to set the value of a double mixer control that spans 2 registers. |
| 2790 | * |
| 2791 | * Returns 0 for success. |
| 2792 | */ |
| 2793 | int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol, |
| 2794 | struct snd_ctl_elem_value *ucontrol) |
| 2795 | { |
| 2796 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2797 | struct soc_mixer_control *mc = |
| 2798 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2799 | |
| 2800 | unsigned int reg = mc->reg; |
| 2801 | unsigned int reg2 = mc->rreg; |
| 2802 | unsigned int shift = mc->shift; |
| 2803 | unsigned int rshift = mc->rshift; |
| 2804 | int max = mc->max; |
| 2805 | int min = mc->min; |
| 2806 | int mask = (1 << (fls(min + max) - 1)) - 1; |
| 2807 | int err = 0; |
| 2808 | unsigned short val, val_mask, val2 = 0; |
| 2809 | |
| 2810 | val_mask = mask << shift; |
| 2811 | val = (ucontrol->value.integer.value[0] + min) & mask; |
| 2812 | val = val << shift; |
| 2813 | |
| 2814 | err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| 2815 | if (err < 0) |
| 2816 | return err; |
| 2817 | |
| 2818 | if (snd_soc_volsw_is_stereo(mc)) { |
| 2819 | val_mask = mask << rshift; |
| 2820 | val2 = (ucontrol->value.integer.value[1] + min) & mask; |
| 2821 | val2 = val2 << rshift; |
| 2822 | |
| 2823 | if (snd_soc_update_bits_locked(codec, reg2, val_mask, val2)) |
| 2824 | return err; |
| 2825 | } |
| 2826 | return 0; |
| 2827 | } |
| 2828 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_sx); |
| 2829 | |
| 2830 | /** |
| 2831 | * snd_soc_info_volsw_s8 - signed mixer info callback |
| 2832 | * @kcontrol: mixer control |
| 2833 | * @uinfo: control element information |
| 2834 | * |
| 2835 | * Callback to provide information about a signed mixer control. |
| 2836 | * |
| 2837 | * Returns 0 for success. |
| 2838 | */ |
| 2839 | int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, |
| 2840 | struct snd_ctl_elem_info *uinfo) |
| 2841 | { |
| 2842 | struct soc_mixer_control *mc = |
| 2843 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2844 | int platform_max; |
| 2845 | int min = mc->min; |
| 2846 | |
| 2847 | if (!mc->platform_max) |
| 2848 | mc->platform_max = mc->max; |
| 2849 | platform_max = mc->platform_max; |
| 2850 | |
| 2851 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 2852 | uinfo->count = 2; |
| 2853 | uinfo->value.integer.min = 0; |
| 2854 | uinfo->value.integer.max = platform_max - min; |
| 2855 | return 0; |
| 2856 | } |
| 2857 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); |
| 2858 | |
| 2859 | /** |
| 2860 | * snd_soc_get_volsw_s8 - signed mixer get callback |
| 2861 | * @kcontrol: mixer control |
| 2862 | * @ucontrol: control element information |
| 2863 | * |
| 2864 | * Callback to get the value of a signed mixer control. |
| 2865 | * |
| 2866 | * Returns 0 for success. |
| 2867 | */ |
| 2868 | int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, |
| 2869 | struct snd_ctl_elem_value *ucontrol) |
| 2870 | { |
| 2871 | struct soc_mixer_control *mc = |
| 2872 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2873 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2874 | unsigned int reg = mc->reg; |
| 2875 | int min = mc->min; |
| 2876 | int val = snd_soc_read(codec, reg); |
| 2877 | |
| 2878 | ucontrol->value.integer.value[0] = |
| 2879 | ((signed char)(val & 0xff))-min; |
| 2880 | ucontrol->value.integer.value[1] = |
| 2881 | ((signed char)((val >> 8) & 0xff))-min; |
| 2882 | return 0; |
| 2883 | } |
| 2884 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_s8); |
| 2885 | |
| 2886 | /** |
| 2887 | * snd_soc_put_volsw_sgn - signed mixer put callback |
| 2888 | * @kcontrol: mixer control |
| 2889 | * @ucontrol: control element information |
| 2890 | * |
| 2891 | * Callback to set the value of a signed mixer control. |
| 2892 | * |
| 2893 | * Returns 0 for success. |
| 2894 | */ |
| 2895 | int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol, |
| 2896 | struct snd_ctl_elem_value *ucontrol) |
| 2897 | { |
| 2898 | struct soc_mixer_control *mc = |
| 2899 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2900 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2901 | unsigned int reg = mc->reg; |
| 2902 | int min = mc->min; |
| 2903 | unsigned int val; |
| 2904 | |
| 2905 | val = (ucontrol->value.integer.value[0]+min) & 0xff; |
| 2906 | val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8; |
| 2907 | |
| 2908 | return snd_soc_update_bits_locked(codec, reg, 0xffff, val); |
| 2909 | } |
| 2910 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8); |
| 2911 | |
| 2912 | /** |
| 2913 | * snd_soc_info_volsw_range - single mixer info callback with range. |
| 2914 | * @kcontrol: mixer control |
| 2915 | * @uinfo: control element information |
| 2916 | * |
| 2917 | * Callback to provide information, within a range, about a single |
| 2918 | * mixer control. |
| 2919 | * |
| 2920 | * returns 0 for success. |
| 2921 | */ |
| 2922 | int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol, |
| 2923 | struct snd_ctl_elem_info *uinfo) |
| 2924 | { |
| 2925 | struct soc_mixer_control *mc = |
| 2926 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2927 | int platform_max; |
| 2928 | int min = mc->min; |
| 2929 | |
| 2930 | if (!mc->platform_max) |
| 2931 | mc->platform_max = mc->max; |
| 2932 | platform_max = mc->platform_max; |
| 2933 | |
| 2934 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 2935 | uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1; |
| 2936 | uinfo->value.integer.min = 0; |
| 2937 | uinfo->value.integer.max = platform_max - min; |
| 2938 | |
| 2939 | return 0; |
| 2940 | } |
| 2941 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_range); |
| 2942 | |
| 2943 | /** |
| 2944 | * snd_soc_put_volsw_range - single mixer put value callback with range. |
| 2945 | * @kcontrol: mixer control |
| 2946 | * @ucontrol: control element information |
| 2947 | * |
| 2948 | * Callback to set the value, within a range, for a single mixer control. |
| 2949 | * |
| 2950 | * Returns 0 for success. |
| 2951 | */ |
| 2952 | int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, |
| 2953 | struct snd_ctl_elem_value *ucontrol) |
| 2954 | { |
| 2955 | struct soc_mixer_control *mc = |
| 2956 | (struct soc_mixer_control *)kcontrol->private_value; |
| 2957 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 2958 | unsigned int reg = mc->reg; |
| 2959 | unsigned int rreg = mc->rreg; |
| 2960 | unsigned int shift = mc->shift; |
| 2961 | int min = mc->min; |
| 2962 | int max = mc->max; |
| 2963 | unsigned int mask = (1 << fls(max)) - 1; |
| 2964 | unsigned int invert = mc->invert; |
| 2965 | unsigned int val, val_mask; |
| 2966 | int ret; |
| 2967 | |
| 2968 | val = ((ucontrol->value.integer.value[0] + min) & mask); |
| 2969 | if (invert) |
| 2970 | val = max - val; |
| 2971 | val_mask = mask << shift; |
| 2972 | val = val << shift; |
| 2973 | |
| 2974 | ret = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| 2975 | if (ret < 0) |
| 2976 | return ret; |
| 2977 | |
| 2978 | if (snd_soc_volsw_is_stereo(mc)) { |
| 2979 | val = ((ucontrol->value.integer.value[1] + min) & mask); |
| 2980 | if (invert) |
| 2981 | val = max - val; |
| 2982 | val_mask = mask << shift; |
| 2983 | val = val << shift; |
| 2984 | |
| 2985 | ret = snd_soc_update_bits_locked(codec, rreg, val_mask, val); |
| 2986 | } |
| 2987 | |
| 2988 | return ret; |
| 2989 | } |
| 2990 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_range); |
| 2991 | |
| 2992 | /** |
| 2993 | * snd_soc_get_volsw_range - single mixer get callback with range |
| 2994 | * @kcontrol: mixer control |
| 2995 | * @ucontrol: control element information |
| 2996 | * |
| 2997 | * Callback to get the value, within a range, of a single mixer control. |
| 2998 | * |
| 2999 | * Returns 0 for success. |
| 3000 | */ |
| 3001 | int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol, |
| 3002 | struct snd_ctl_elem_value *ucontrol) |
| 3003 | { |
| 3004 | struct soc_mixer_control *mc = |
| 3005 | (struct soc_mixer_control *)kcontrol->private_value; |
| 3006 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3007 | unsigned int reg = mc->reg; |
| 3008 | unsigned int rreg = mc->rreg; |
| 3009 | unsigned int shift = mc->shift; |
| 3010 | int min = mc->min; |
| 3011 | int max = mc->max; |
| 3012 | unsigned int mask = (1 << fls(max)) - 1; |
| 3013 | unsigned int invert = mc->invert; |
| 3014 | |
| 3015 | ucontrol->value.integer.value[0] = |
| 3016 | (snd_soc_read(codec, reg) >> shift) & mask; |
| 3017 | if (invert) |
| 3018 | ucontrol->value.integer.value[0] = |
| 3019 | max - ucontrol->value.integer.value[0]; |
| 3020 | ucontrol->value.integer.value[0] = |
| 3021 | ucontrol->value.integer.value[0] - min; |
| 3022 | |
| 3023 | if (snd_soc_volsw_is_stereo(mc)) { |
| 3024 | ucontrol->value.integer.value[1] = |
| 3025 | (snd_soc_read(codec, rreg) >> shift) & mask; |
| 3026 | if (invert) |
| 3027 | ucontrol->value.integer.value[1] = |
| 3028 | max - ucontrol->value.integer.value[1]; |
| 3029 | ucontrol->value.integer.value[1] = |
| 3030 | ucontrol->value.integer.value[1] - min; |
| 3031 | } |
| 3032 | |
| 3033 | return 0; |
| 3034 | } |
| 3035 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); |
| 3036 | |
| 3037 | /** |
| 3038 | * snd_soc_limit_volume - Set new limit to an existing volume control. |
| 3039 | * |
| 3040 | * @codec: where to look for the control |
| 3041 | * @name: Name of the control |
| 3042 | * @max: new maximum limit |
| 3043 | * |
| 3044 | * Return 0 for success, else error. |
| 3045 | */ |
| 3046 | int snd_soc_limit_volume(struct snd_soc_codec *codec, |
| 3047 | const char *name, int max) |
| 3048 | { |
| 3049 | struct snd_card *card = codec->card->snd_card; |
| 3050 | struct snd_kcontrol *kctl; |
| 3051 | struct soc_mixer_control *mc; |
| 3052 | int found = 0; |
| 3053 | int ret = -EINVAL; |
| 3054 | |
| 3055 | /* Sanity check for name and max */ |
| 3056 | if (unlikely(!name || max <= 0)) |
| 3057 | return -EINVAL; |
| 3058 | |
| 3059 | list_for_each_entry(kctl, &card->controls, list) { |
| 3060 | if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name))) { |
| 3061 | found = 1; |
| 3062 | break; |
| 3063 | } |
| 3064 | } |
| 3065 | if (found) { |
| 3066 | mc = (struct soc_mixer_control *)kctl->private_value; |
| 3067 | if (max <= mc->max) { |
| 3068 | mc->platform_max = max; |
| 3069 | ret = 0; |
| 3070 | } |
| 3071 | } |
| 3072 | return ret; |
| 3073 | } |
| 3074 | EXPORT_SYMBOL_GPL(snd_soc_limit_volume); |
| 3075 | |
| 3076 | int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, |
| 3077 | struct snd_ctl_elem_info *uinfo) |
| 3078 | { |
| 3079 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3080 | struct soc_bytes *params = (void *)kcontrol->private_value; |
| 3081 | |
| 3082 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; |
| 3083 | uinfo->count = params->num_regs * codec->val_bytes; |
| 3084 | |
| 3085 | return 0; |
| 3086 | } |
| 3087 | EXPORT_SYMBOL_GPL(snd_soc_bytes_info); |
| 3088 | |
| 3089 | int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, |
| 3090 | struct snd_ctl_elem_value *ucontrol) |
| 3091 | { |
| 3092 | struct soc_bytes *params = (void *)kcontrol->private_value; |
| 3093 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3094 | int ret; |
| 3095 | |
| 3096 | if (codec->using_regmap) |
| 3097 | ret = regmap_raw_read(codec->control_data, params->base, |
| 3098 | ucontrol->value.bytes.data, |
| 3099 | params->num_regs * codec->val_bytes); |
| 3100 | else |
| 3101 | ret = -EINVAL; |
| 3102 | |
| 3103 | /* Hide any masked bytes to ensure consistent data reporting */ |
| 3104 | if (ret == 0 && params->mask) { |
| 3105 | switch (codec->val_bytes) { |
| 3106 | case 1: |
| 3107 | ucontrol->value.bytes.data[0] &= ~params->mask; |
| 3108 | break; |
| 3109 | case 2: |
| 3110 | ((u16 *)(&ucontrol->value.bytes.data))[0] |
| 3111 | &= ~params->mask; |
| 3112 | break; |
| 3113 | case 4: |
| 3114 | ((u32 *)(&ucontrol->value.bytes.data))[0] |
| 3115 | &= ~params->mask; |
| 3116 | break; |
| 3117 | default: |
| 3118 | return -EINVAL; |
| 3119 | } |
| 3120 | } |
| 3121 | |
| 3122 | return ret; |
| 3123 | } |
| 3124 | EXPORT_SYMBOL_GPL(snd_soc_bytes_get); |
| 3125 | |
| 3126 | int snd_soc_bytes_put(struct snd_kcontrol *kcontrol, |
| 3127 | struct snd_ctl_elem_value *ucontrol) |
| 3128 | { |
| 3129 | struct soc_bytes *params = (void *)kcontrol->private_value; |
| 3130 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3131 | int ret, len; |
| 3132 | unsigned int val; |
| 3133 | void *data; |
| 3134 | |
| 3135 | if (!codec->using_regmap) |
| 3136 | return -EINVAL; |
| 3137 | |
| 3138 | len = params->num_regs * codec->val_bytes; |
| 3139 | |
| 3140 | data = kmemdup(ucontrol->value.bytes.data, len, GFP_KERNEL | GFP_DMA); |
| 3141 | if (!data) |
| 3142 | return -ENOMEM; |
| 3143 | |
| 3144 | /* |
| 3145 | * If we've got a mask then we need to preserve the register |
| 3146 | * bits. We shouldn't modify the incoming data so take a |
| 3147 | * copy. |
| 3148 | */ |
| 3149 | if (params->mask) { |
| 3150 | ret = regmap_read(codec->control_data, params->base, &val); |
| 3151 | if (ret != 0) |
| 3152 | goto out; |
| 3153 | |
| 3154 | val &= params->mask; |
| 3155 | |
| 3156 | switch (codec->val_bytes) { |
| 3157 | case 1: |
| 3158 | ((u8 *)data)[0] &= ~params->mask; |
| 3159 | ((u8 *)data)[0] |= val; |
| 3160 | break; |
| 3161 | case 2: |
| 3162 | ((u16 *)data)[0] &= cpu_to_be16(~params->mask); |
| 3163 | ((u16 *)data)[0] |= cpu_to_be16(val); |
| 3164 | break; |
| 3165 | case 4: |
| 3166 | ((u32 *)data)[0] &= cpu_to_be32(~params->mask); |
| 3167 | ((u32 *)data)[0] |= cpu_to_be32(val); |
| 3168 | break; |
| 3169 | default: |
| 3170 | ret = -EINVAL; |
| 3171 | goto out; |
| 3172 | } |
| 3173 | } |
| 3174 | |
| 3175 | ret = regmap_raw_write(codec->control_data, params->base, |
| 3176 | data, len); |
| 3177 | |
| 3178 | out: |
| 3179 | kfree(data); |
| 3180 | |
| 3181 | return ret; |
| 3182 | } |
| 3183 | EXPORT_SYMBOL_GPL(snd_soc_bytes_put); |
| 3184 | |
| 3185 | /** |
| 3186 | * snd_soc_info_xr_sx - signed multi register info callback |
| 3187 | * @kcontrol: mreg control |
| 3188 | * @uinfo: control element information |
| 3189 | * |
| 3190 | * Callback to provide information of a control that can |
| 3191 | * span multiple codec registers which together |
| 3192 | * forms a single signed value in a MSB/LSB manner. |
| 3193 | * |
| 3194 | * Returns 0 for success. |
| 3195 | */ |
| 3196 | int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol, |
| 3197 | struct snd_ctl_elem_info *uinfo) |
| 3198 | { |
| 3199 | struct soc_mreg_control *mc = |
| 3200 | (struct soc_mreg_control *)kcontrol->private_value; |
| 3201 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 3202 | uinfo->count = 1; |
| 3203 | uinfo->value.integer.min = mc->min; |
| 3204 | uinfo->value.integer.max = mc->max; |
| 3205 | |
| 3206 | return 0; |
| 3207 | } |
| 3208 | EXPORT_SYMBOL_GPL(snd_soc_info_xr_sx); |
| 3209 | |
| 3210 | /** |
| 3211 | * snd_soc_get_xr_sx - signed multi register get callback |
| 3212 | * @kcontrol: mreg control |
| 3213 | * @ucontrol: control element information |
| 3214 | * |
| 3215 | * Callback to get the value of a control that can span |
| 3216 | * multiple codec registers which together forms a single |
| 3217 | * signed value in a MSB/LSB manner. The control supports |
| 3218 | * specifying total no of bits used to allow for bitfields |
| 3219 | * across the multiple codec registers. |
| 3220 | * |
| 3221 | * Returns 0 for success. |
| 3222 | */ |
| 3223 | int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol, |
| 3224 | struct snd_ctl_elem_value *ucontrol) |
| 3225 | { |
| 3226 | struct soc_mreg_control *mc = |
| 3227 | (struct soc_mreg_control *)kcontrol->private_value; |
| 3228 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3229 | unsigned int regbase = mc->regbase; |
| 3230 | unsigned int regcount = mc->regcount; |
| 3231 | unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE; |
| 3232 | unsigned int regwmask = (1<<regwshift)-1; |
| 3233 | unsigned int invert = mc->invert; |
| 3234 | unsigned long mask = (1UL<<mc->nbits)-1; |
| 3235 | long min = mc->min; |
| 3236 | long max = mc->max; |
| 3237 | long val = 0; |
| 3238 | unsigned long regval; |
| 3239 | unsigned int i; |
| 3240 | |
| 3241 | for (i = 0; i < regcount; i++) { |
| 3242 | regval = snd_soc_read(codec, regbase+i) & regwmask; |
| 3243 | val |= regval << (regwshift*(regcount-i-1)); |
| 3244 | } |
| 3245 | val &= mask; |
| 3246 | if (min < 0 && val > max) |
| 3247 | val |= ~mask; |
| 3248 | if (invert) |
| 3249 | val = max - val; |
| 3250 | ucontrol->value.integer.value[0] = val; |
| 3251 | |
| 3252 | return 0; |
| 3253 | } |
| 3254 | EXPORT_SYMBOL_GPL(snd_soc_get_xr_sx); |
| 3255 | |
| 3256 | /** |
| 3257 | * snd_soc_put_xr_sx - signed multi register get callback |
| 3258 | * @kcontrol: mreg control |
| 3259 | * @ucontrol: control element information |
| 3260 | * |
| 3261 | * Callback to set the value of a control that can span |
| 3262 | * multiple codec registers which together forms a single |
| 3263 | * signed value in a MSB/LSB manner. The control supports |
| 3264 | * specifying total no of bits used to allow for bitfields |
| 3265 | * across the multiple codec registers. |
| 3266 | * |
| 3267 | * Returns 0 for success. |
| 3268 | */ |
| 3269 | int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol, |
| 3270 | struct snd_ctl_elem_value *ucontrol) |
| 3271 | { |
| 3272 | struct soc_mreg_control *mc = |
| 3273 | (struct soc_mreg_control *)kcontrol->private_value; |
| 3274 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3275 | unsigned int regbase = mc->regbase; |
| 3276 | unsigned int regcount = mc->regcount; |
| 3277 | unsigned int regwshift = codec->driver->reg_word_size * BITS_PER_BYTE; |
| 3278 | unsigned int regwmask = (1<<regwshift)-1; |
| 3279 | unsigned int invert = mc->invert; |
| 3280 | unsigned long mask = (1UL<<mc->nbits)-1; |
| 3281 | long max = mc->max; |
| 3282 | long val = ucontrol->value.integer.value[0]; |
| 3283 | unsigned int i, regval, regmask; |
| 3284 | int err; |
| 3285 | |
| 3286 | if (invert) |
| 3287 | val = max - val; |
| 3288 | val &= mask; |
| 3289 | for (i = 0; i < regcount; i++) { |
| 3290 | regval = (val >> (regwshift*(regcount-i-1))) & regwmask; |
| 3291 | regmask = (mask >> (regwshift*(regcount-i-1))) & regwmask; |
| 3292 | err = snd_soc_update_bits_locked(codec, regbase+i, |
| 3293 | regmask, regval); |
| 3294 | if (err < 0) |
| 3295 | return err; |
| 3296 | } |
| 3297 | |
| 3298 | return 0; |
| 3299 | } |
| 3300 | EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx); |
| 3301 | |
| 3302 | /** |
| 3303 | * snd_soc_get_strobe - strobe get callback |
| 3304 | * @kcontrol: mixer control |
| 3305 | * @ucontrol: control element information |
| 3306 | * |
| 3307 | * Callback get the value of a strobe mixer control. |
| 3308 | * |
| 3309 | * Returns 0 for success. |
| 3310 | */ |
| 3311 | int snd_soc_get_strobe(struct snd_kcontrol *kcontrol, |
| 3312 | struct snd_ctl_elem_value *ucontrol) |
| 3313 | { |
| 3314 | struct soc_mixer_control *mc = |
| 3315 | (struct soc_mixer_control *)kcontrol->private_value; |
| 3316 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3317 | unsigned int reg = mc->reg; |
| 3318 | unsigned int shift = mc->shift; |
| 3319 | unsigned int mask = 1 << shift; |
| 3320 | unsigned int invert = mc->invert != 0; |
| 3321 | unsigned int val = snd_soc_read(codec, reg) & mask; |
| 3322 | |
| 3323 | if (shift != 0 && val != 0) |
| 3324 | val = val >> shift; |
| 3325 | ucontrol->value.enumerated.item[0] = val ^ invert; |
| 3326 | |
| 3327 | return 0; |
| 3328 | } |
| 3329 | EXPORT_SYMBOL_GPL(snd_soc_get_strobe); |
| 3330 | |
| 3331 | /** |
| 3332 | * snd_soc_put_strobe - strobe put callback |
| 3333 | * @kcontrol: mixer control |
| 3334 | * @ucontrol: control element information |
| 3335 | * |
| 3336 | * Callback strobe a register bit to high then low (or the inverse) |
| 3337 | * in one pass of a single mixer enum control. |
| 3338 | * |
| 3339 | * Returns 1 for success. |
| 3340 | */ |
| 3341 | int snd_soc_put_strobe(struct snd_kcontrol *kcontrol, |
| 3342 | struct snd_ctl_elem_value *ucontrol) |
| 3343 | { |
| 3344 | struct soc_mixer_control *mc = |
| 3345 | (struct soc_mixer_control *)kcontrol->private_value; |
| 3346 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| 3347 | unsigned int reg = mc->reg; |
| 3348 | unsigned int shift = mc->shift; |
| 3349 | unsigned int mask = 1 << shift; |
| 3350 | unsigned int invert = mc->invert != 0; |
| 3351 | unsigned int strobe = ucontrol->value.enumerated.item[0] != 0; |
| 3352 | unsigned int val1 = (strobe ^ invert) ? mask : 0; |
| 3353 | unsigned int val2 = (strobe ^ invert) ? 0 : mask; |
| 3354 | int err; |
| 3355 | |
| 3356 | err = snd_soc_update_bits_locked(codec, reg, mask, val1); |
| 3357 | if (err < 0) |
| 3358 | return err; |
| 3359 | |
| 3360 | err = snd_soc_update_bits_locked(codec, reg, mask, val2); |
| 3361 | return err; |
| 3362 | } |
| 3363 | EXPORT_SYMBOL_GPL(snd_soc_put_strobe); |
| 3364 | |
| 3365 | /** |
| 3366 | * snd_soc_dai_set_sysclk - configure DAI system or master clock. |
| 3367 | * @dai: DAI |
| 3368 | * @clk_id: DAI specific clock ID |
| 3369 | * @freq: new clock frequency in Hz |
| 3370 | * @dir: new clock direction - input/output. |
| 3371 | * |
| 3372 | * Configures the DAI master (MCLK) or system (SYSCLK) clocking. |
| 3373 | */ |
| 3374 | int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 3375 | unsigned int freq, int dir) |
| 3376 | { |
| 3377 | if (dai->driver && dai->driver->ops->set_sysclk) |
| 3378 | return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir); |
| 3379 | else if (dai->codec && dai->codec->driver->set_sysclk) |
| 3380 | return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0, |
| 3381 | freq, dir); |
| 3382 | else |
| 3383 | return -EINVAL; |
| 3384 | } |
| 3385 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk); |
| 3386 | |
| 3387 | /** |
| 3388 | * snd_soc_codec_set_sysclk - configure CODEC system or master clock. |
| 3389 | * @codec: CODEC |
| 3390 | * @clk_id: DAI specific clock ID |
| 3391 | * @source: Source for the clock |
| 3392 | * @freq: new clock frequency in Hz |
| 3393 | * @dir: new clock direction - input/output. |
| 3394 | * |
| 3395 | * Configures the CODEC master (MCLK) or system (SYSCLK) clocking. |
| 3396 | */ |
| 3397 | int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id, |
| 3398 | int source, unsigned int freq, int dir) |
| 3399 | { |
| 3400 | if (codec->driver->set_sysclk) |
| 3401 | return codec->driver->set_sysclk(codec, clk_id, source, |
| 3402 | freq, dir); |
| 3403 | else |
| 3404 | return -EINVAL; |
| 3405 | } |
| 3406 | EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk); |
| 3407 | |
| 3408 | /** |
| 3409 | * snd_soc_dai_set_clkdiv - configure DAI clock dividers. |
| 3410 | * @dai: DAI |
| 3411 | * @div_id: DAI specific clock divider ID |
| 3412 | * @div: new clock divisor. |
| 3413 | * |
| 3414 | * Configures the clock dividers. This is used to derive the best DAI bit and |
| 3415 | * frame clocks from the system or master clock. It's best to set the DAI bit |
| 3416 | * and frame clocks as low as possible to save system power. |
| 3417 | */ |
| 3418 | int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai, |
| 3419 | int div_id, int div) |
| 3420 | { |
| 3421 | if (dai->driver && dai->driver->ops->set_clkdiv) |
| 3422 | return dai->driver->ops->set_clkdiv(dai, div_id, div); |
| 3423 | else |
| 3424 | return -EINVAL; |
| 3425 | } |
| 3426 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_clkdiv); |
| 3427 | |
| 3428 | /** |
| 3429 | * snd_soc_dai_set_pll - configure DAI PLL. |
| 3430 | * @dai: DAI |
| 3431 | * @pll_id: DAI specific PLL ID |
| 3432 | * @source: DAI specific source for the PLL |
| 3433 | * @freq_in: PLL input clock frequency in Hz |
| 3434 | * @freq_out: requested PLL output clock frequency in Hz |
| 3435 | * |
| 3436 | * Configures and enables PLL to generate output clock based on input clock. |
| 3437 | */ |
| 3438 | int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source, |
| 3439 | unsigned int freq_in, unsigned int freq_out) |
| 3440 | { |
| 3441 | if (dai->driver && dai->driver->ops->set_pll) |
| 3442 | return dai->driver->ops->set_pll(dai, pll_id, source, |
| 3443 | freq_in, freq_out); |
| 3444 | else if (dai->codec && dai->codec->driver->set_pll) |
| 3445 | return dai->codec->driver->set_pll(dai->codec, pll_id, source, |
| 3446 | freq_in, freq_out); |
| 3447 | else |
| 3448 | return -EINVAL; |
| 3449 | } |
| 3450 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll); |
| 3451 | |
| 3452 | /* |
| 3453 | * snd_soc_codec_set_pll - configure codec PLL. |
| 3454 | * @codec: CODEC |
| 3455 | * @pll_id: DAI specific PLL ID |
| 3456 | * @source: DAI specific source for the PLL |
| 3457 | * @freq_in: PLL input clock frequency in Hz |
| 3458 | * @freq_out: requested PLL output clock frequency in Hz |
| 3459 | * |
| 3460 | * Configures and enables PLL to generate output clock based on input clock. |
| 3461 | */ |
| 3462 | int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source, |
| 3463 | unsigned int freq_in, unsigned int freq_out) |
| 3464 | { |
| 3465 | if (codec->driver->set_pll) |
| 3466 | return codec->driver->set_pll(codec, pll_id, source, |
| 3467 | freq_in, freq_out); |
| 3468 | else |
| 3469 | return -EINVAL; |
| 3470 | } |
| 3471 | EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll); |
| 3472 | |
| 3473 | /** |
| 3474 | * snd_soc_dai_set_fmt - configure DAI hardware audio format. |
| 3475 | * @dai: DAI |
| 3476 | * @fmt: SND_SOC_DAIFMT_ format value. |
| 3477 | * |
| 3478 | * Configures the DAI hardware format and clocking. |
| 3479 | */ |
| 3480 | int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
| 3481 | { |
| 3482 | if (dai->driver == NULL) |
| 3483 | return -EINVAL; |
| 3484 | if (dai->driver->ops->set_fmt == NULL) |
| 3485 | return -ENOTSUPP; |
| 3486 | return dai->driver->ops->set_fmt(dai, fmt); |
| 3487 | } |
| 3488 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_fmt); |
| 3489 | |
| 3490 | /** |
| 3491 | * snd_soc_dai_set_tdm_slot - configure DAI TDM. |
| 3492 | * @dai: DAI |
| 3493 | * @tx_mask: bitmask representing active TX slots. |
| 3494 | * @rx_mask: bitmask representing active RX slots. |
| 3495 | * @slots: Number of slots in use. |
| 3496 | * @slot_width: Width in bits for each slot. |
| 3497 | * |
| 3498 | * Configures a DAI for TDM operation. Both mask and slots are codec and DAI |
| 3499 | * specific. |
| 3500 | */ |
| 3501 | int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai, |
| 3502 | unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) |
| 3503 | { |
| 3504 | if (dai->driver && dai->driver->ops->set_tdm_slot) |
| 3505 | return dai->driver->ops->set_tdm_slot(dai, tx_mask, rx_mask, |
| 3506 | slots, slot_width); |
| 3507 | else |
| 3508 | return -EINVAL; |
| 3509 | } |
| 3510 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tdm_slot); |
| 3511 | |
| 3512 | /** |
| 3513 | * snd_soc_dai_set_channel_map - configure DAI audio channel map |
| 3514 | * @dai: DAI |
| 3515 | * @tx_num: how many TX channels |
| 3516 | * @tx_slot: pointer to an array which imply the TX slot number channel |
| 3517 | * 0~num-1 uses |
| 3518 | * @rx_num: how many RX channels |
| 3519 | * @rx_slot: pointer to an array which imply the RX slot number channel |
| 3520 | * 0~num-1 uses |
| 3521 | * |
| 3522 | * configure the relationship between channel number and TDM slot number. |
| 3523 | */ |
| 3524 | int snd_soc_dai_set_channel_map(struct snd_soc_dai *dai, |
| 3525 | unsigned int tx_num, unsigned int *tx_slot, |
| 3526 | unsigned int rx_num, unsigned int *rx_slot) |
| 3527 | { |
| 3528 | if (dai->driver && dai->driver->ops->set_channel_map) |
| 3529 | return dai->driver->ops->set_channel_map(dai, tx_num, tx_slot, |
| 3530 | rx_num, rx_slot); |
| 3531 | else |
| 3532 | return -EINVAL; |
| 3533 | } |
| 3534 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_channel_map); |
| 3535 | |
| 3536 | /** |
| 3537 | * snd_soc_dai_set_tristate - configure DAI system or master clock. |
| 3538 | * @dai: DAI |
| 3539 | * @tristate: tristate enable |
| 3540 | * |
| 3541 | * Tristates the DAI so that others can use it. |
| 3542 | */ |
| 3543 | int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate) |
| 3544 | { |
| 3545 | if (dai->driver && dai->driver->ops->set_tristate) |
| 3546 | return dai->driver->ops->set_tristate(dai, tristate); |
| 3547 | else |
| 3548 | return -EINVAL; |
| 3549 | } |
| 3550 | EXPORT_SYMBOL_GPL(snd_soc_dai_set_tristate); |
| 3551 | |
| 3552 | /** |
| 3553 | * snd_soc_dai_digital_mute - configure DAI system or master clock. |
| 3554 | * @dai: DAI |
| 3555 | * @mute: mute enable |
| 3556 | * @direction: stream to mute |
| 3557 | * |
| 3558 | * Mutes the DAI DAC. |
| 3559 | */ |
| 3560 | int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute, |
| 3561 | int direction) |
| 3562 | { |
| 3563 | if (!dai->driver) |
| 3564 | return -ENOTSUPP; |
| 3565 | |
| 3566 | if (dai->driver->ops->mute_stream) |
| 3567 | return dai->driver->ops->mute_stream(dai, mute, direction); |
| 3568 | else if (direction == SNDRV_PCM_STREAM_PLAYBACK && |
| 3569 | dai->driver->ops->digital_mute) |
| 3570 | return dai->driver->ops->digital_mute(dai, mute); |
| 3571 | else |
| 3572 | return -ENOTSUPP; |
| 3573 | } |
| 3574 | EXPORT_SYMBOL_GPL(snd_soc_dai_digital_mute); |
| 3575 | |
| 3576 | /** |
| 3577 | * snd_soc_register_card - Register a card with the ASoC core |
| 3578 | * |
| 3579 | * @card: Card to register |
| 3580 | * |
| 3581 | */ |
| 3582 | int snd_soc_register_card(struct snd_soc_card *card) |
| 3583 | { |
| 3584 | int i, ret; |
| 3585 | |
| 3586 | if (!card->name || !card->dev) |
| 3587 | return -EINVAL; |
| 3588 | |
| 3589 | for (i = 0; i < card->num_links; i++) { |
| 3590 | struct snd_soc_dai_link *link = &card->dai_link[i]; |
| 3591 | |
| 3592 | /* |
| 3593 | * Codec must be specified by 1 of name or OF node, |
| 3594 | * not both or neither. |
| 3595 | */ |
| 3596 | if (!!link->codec_name == !!link->codec_of_node) { |
| 3597 | dev_err(card->dev, "ASoC: Neither/both codec" |
| 3598 | " name/of_node are set for %s\n", link->name); |
| 3599 | return -EINVAL; |
| 3600 | } |
| 3601 | /* Codec DAI name must be specified */ |
| 3602 | if (!link->codec_dai_name) { |
| 3603 | dev_err(card->dev, "ASoC: codec_dai_name not" |
| 3604 | " set for %s\n", link->name); |
| 3605 | return -EINVAL; |
| 3606 | } |
| 3607 | |
| 3608 | /* |
| 3609 | * Platform may be specified by either name or OF node, but |
| 3610 | * can be left unspecified, and a dummy platform will be used. |
| 3611 | */ |
| 3612 | if (link->platform_name && link->platform_of_node) { |
| 3613 | dev_err(card->dev, "ASoC: Both platform name/of_node" |
| 3614 | " are set for %s\n", link->name); |
| 3615 | return -EINVAL; |
| 3616 | } |
| 3617 | |
| 3618 | /* |
| 3619 | * CPU device may be specified by either name or OF node, but |
| 3620 | * can be left unspecified, and will be matched based on DAI |
| 3621 | * name alone.. |
| 3622 | */ |
| 3623 | if (link->cpu_name && link->cpu_of_node) { |
| 3624 | dev_err(card->dev, "ASoC: Neither/both " |
| 3625 | "cpu name/of_node are set for %s\n",link->name); |
| 3626 | return -EINVAL; |
| 3627 | } |
| 3628 | /* |
| 3629 | * At least one of CPU DAI name or CPU device name/node must be |
| 3630 | * specified |
| 3631 | */ |
| 3632 | if (!link->cpu_dai_name && |
| 3633 | !(link->cpu_name || link->cpu_of_node)) { |
| 3634 | dev_err(card->dev, "ASoC: Neither cpu_dai_name nor " |
| 3635 | "cpu_name/of_node are set for %s\n", link->name); |
| 3636 | return -EINVAL; |
| 3637 | } |
| 3638 | } |
| 3639 | |
| 3640 | dev_set_drvdata(card->dev, card); |
| 3641 | |
| 3642 | snd_soc_initialize_card_lists(card); |
| 3643 | |
| 3644 | soc_init_card_debugfs(card); |
| 3645 | |
| 3646 | card->rtd = devm_kzalloc(card->dev, |
| 3647 | sizeof(struct snd_soc_pcm_runtime) * |
| 3648 | (card->num_links + card->num_aux_devs), |
| 3649 | GFP_KERNEL); |
| 3650 | if (card->rtd == NULL) |
| 3651 | return -ENOMEM; |
| 3652 | card->num_rtd = 0; |
| 3653 | card->rtd_aux = &card->rtd[card->num_links]; |
| 3654 | |
| 3655 | for (i = 0; i < card->num_links; i++) |
| 3656 | card->rtd[i].dai_link = &card->dai_link[i]; |
| 3657 | |
| 3658 | INIT_LIST_HEAD(&card->list); |
| 3659 | INIT_LIST_HEAD(&card->dapm_dirty); |
| 3660 | card->instantiated = 0; |
| 3661 | mutex_init(&card->mutex); |
| 3662 | mutex_init(&card->dapm_mutex); |
| 3663 | |
| 3664 | ret = snd_soc_instantiate_card(card); |
| 3665 | if (ret != 0) |
| 3666 | soc_cleanup_card_debugfs(card); |
| 3667 | |
| 3668 | return ret; |
| 3669 | } |
| 3670 | EXPORT_SYMBOL_GPL(snd_soc_register_card); |
| 3671 | |
| 3672 | /** |
| 3673 | * snd_soc_unregister_card - Unregister a card with the ASoC core |
| 3674 | * |
| 3675 | * @card: Card to unregister |
| 3676 | * |
| 3677 | */ |
| 3678 | int snd_soc_unregister_card(struct snd_soc_card *card) |
| 3679 | { |
| 3680 | if (card->instantiated) |
| 3681 | soc_cleanup_card_resources(card); |
| 3682 | dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name); |
| 3683 | |
| 3684 | return 0; |
| 3685 | } |
| 3686 | EXPORT_SYMBOL_GPL(snd_soc_unregister_card); |
| 3687 | |
| 3688 | /* |
| 3689 | * Simplify DAI link configuration by removing ".-1" from device names |
| 3690 | * and sanitizing names. |
| 3691 | */ |
| 3692 | static char *fmt_single_name(struct device *dev, int *id) |
| 3693 | { |
| 3694 | char *found, name[NAME_SIZE]; |
| 3695 | int id1, id2; |
| 3696 | |
| 3697 | if (dev_name(dev) == NULL) |
| 3698 | return NULL; |
| 3699 | |
| 3700 | strlcpy(name, dev_name(dev), NAME_SIZE); |
| 3701 | |
| 3702 | /* are we a "%s.%d" name (platform and SPI components) */ |
| 3703 | found = strstr(name, dev->driver->name); |
| 3704 | if (found) { |
| 3705 | /* get ID */ |
| 3706 | if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) { |
| 3707 | |
| 3708 | /* discard ID from name if ID == -1 */ |
| 3709 | if (*id == -1) |
| 3710 | found[strlen(dev->driver->name)] = '\0'; |
| 3711 | } |
| 3712 | |
| 3713 | } else { |
| 3714 | /* I2C component devices are named "bus-addr" */ |
| 3715 | if (sscanf(name, "%x-%x", &id1, &id2) == 2) { |
| 3716 | char tmp[NAME_SIZE]; |
| 3717 | |
| 3718 | /* create unique ID number from I2C addr and bus */ |
| 3719 | *id = ((id1 & 0xffff) << 16) + id2; |
| 3720 | |
| 3721 | /* sanitize component name for DAI link creation */ |
| 3722 | snprintf(tmp, NAME_SIZE, "%s.%s", dev->driver->name, name); |
| 3723 | strlcpy(name, tmp, NAME_SIZE); |
| 3724 | } else |
| 3725 | *id = 0; |
| 3726 | } |
| 3727 | |
| 3728 | return kstrdup(name, GFP_KERNEL); |
| 3729 | } |
| 3730 | |
| 3731 | /* |
| 3732 | * Simplify DAI link naming for single devices with multiple DAIs by removing |
| 3733 | * any ".-1" and using the DAI name (instead of device name). |
| 3734 | */ |
| 3735 | static inline char *fmt_multiple_name(struct device *dev, |
| 3736 | struct snd_soc_dai_driver *dai_drv) |
| 3737 | { |
| 3738 | if (dai_drv->name == NULL) { |
| 3739 | dev_err(dev, "ASoC: error - multiple DAI %s registered with" |
| 3740 | " no name\n", dev_name(dev)); |
| 3741 | return NULL; |
| 3742 | } |
| 3743 | |
| 3744 | return kstrdup(dai_drv->name, GFP_KERNEL); |
| 3745 | } |
| 3746 | |
| 3747 | /** |
| 3748 | * snd_soc_register_dai - Register a DAI with the ASoC core |
| 3749 | * |
| 3750 | * @dai: DAI to register |
| 3751 | */ |
| 3752 | static int snd_soc_register_dai(struct device *dev, |
| 3753 | struct snd_soc_dai_driver *dai_drv) |
| 3754 | { |
| 3755 | struct snd_soc_codec *codec; |
| 3756 | struct snd_soc_dai *dai; |
| 3757 | |
| 3758 | dev_dbg(dev, "ASoC: dai register %s\n", dev_name(dev)); |
| 3759 | |
| 3760 | dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); |
| 3761 | if (dai == NULL) |
| 3762 | return -ENOMEM; |
| 3763 | |
| 3764 | /* create DAI component name */ |
| 3765 | dai->name = fmt_single_name(dev, &dai->id); |
| 3766 | if (dai->name == NULL) { |
| 3767 | kfree(dai); |
| 3768 | return -ENOMEM; |
| 3769 | } |
| 3770 | |
| 3771 | dai->dev = dev; |
| 3772 | dai->driver = dai_drv; |
| 3773 | dai->dapm.dev = dev; |
| 3774 | if (!dai->driver->ops) |
| 3775 | dai->driver->ops = &null_dai_ops; |
| 3776 | |
| 3777 | mutex_lock(&client_mutex); |
| 3778 | |
| 3779 | list_for_each_entry(codec, &codec_list, list) { |
| 3780 | if (codec->dev == dev) { |
| 3781 | dev_dbg(dev, "ASoC: Mapped DAI %s to CODEC %s\n", |
| 3782 | dai->name, codec->name); |
| 3783 | dai->codec = codec; |
| 3784 | break; |
| 3785 | } |
| 3786 | } |
| 3787 | |
| 3788 | if (!dai->codec) |
| 3789 | dai->dapm.idle_bias_off = 1; |
| 3790 | |
| 3791 | list_add(&dai->list, &dai_list); |
| 3792 | |
| 3793 | mutex_unlock(&client_mutex); |
| 3794 | |
| 3795 | dev_dbg(dev, "ASoC: Registered DAI '%s'\n", dai->name); |
| 3796 | |
| 3797 | return 0; |
| 3798 | } |
| 3799 | |
| 3800 | /** |
| 3801 | * snd_soc_unregister_dai - Unregister a DAI from the ASoC core |
| 3802 | * |
| 3803 | * @dai: DAI to unregister |
| 3804 | */ |
| 3805 | static void snd_soc_unregister_dai(struct device *dev) |
| 3806 | { |
| 3807 | struct snd_soc_dai *dai; |
| 3808 | |
| 3809 | list_for_each_entry(dai, &dai_list, list) { |
| 3810 | if (dev == dai->dev) |
| 3811 | goto found; |
| 3812 | } |
| 3813 | return; |
| 3814 | |
| 3815 | found: |
| 3816 | mutex_lock(&client_mutex); |
| 3817 | list_del(&dai->list); |
| 3818 | mutex_unlock(&client_mutex); |
| 3819 | |
| 3820 | dev_dbg(dev, "ASoC: Unregistered DAI '%s'\n", dai->name); |
| 3821 | kfree(dai->name); |
| 3822 | kfree(dai); |
| 3823 | } |
| 3824 | |
| 3825 | /** |
| 3826 | * snd_soc_register_dais - Register multiple DAIs with the ASoC core |
| 3827 | * |
| 3828 | * @dai: Array of DAIs to register |
| 3829 | * @count: Number of DAIs |
| 3830 | */ |
| 3831 | static int snd_soc_register_dais(struct device *dev, |
| 3832 | struct snd_soc_dai_driver *dai_drv, size_t count) |
| 3833 | { |
| 3834 | struct snd_soc_codec *codec; |
| 3835 | struct snd_soc_dai *dai; |
| 3836 | int i, ret = 0; |
| 3837 | |
| 3838 | dev_dbg(dev, "ASoC: dai register %s #%Zu\n", dev_name(dev), count); |
| 3839 | |
| 3840 | for (i = 0; i < count; i++) { |
| 3841 | |
| 3842 | dai = kzalloc(sizeof(struct snd_soc_dai), GFP_KERNEL); |
| 3843 | if (dai == NULL) { |
| 3844 | ret = -ENOMEM; |
| 3845 | goto err; |
| 3846 | } |
| 3847 | |
| 3848 | /* create DAI component name */ |
| 3849 | dai->name = fmt_multiple_name(dev, &dai_drv[i]); |
| 3850 | if (dai->name == NULL) { |
| 3851 | kfree(dai); |
| 3852 | ret = -EINVAL; |
| 3853 | goto err; |
| 3854 | } |
| 3855 | |
| 3856 | dai->dev = dev; |
| 3857 | dai->driver = &dai_drv[i]; |
| 3858 | if (dai->driver->id) |
| 3859 | dai->id = dai->driver->id; |
| 3860 | else |
| 3861 | dai->id = i; |
| 3862 | dai->dapm.dev = dev; |
| 3863 | if (!dai->driver->ops) |
| 3864 | dai->driver->ops = &null_dai_ops; |
| 3865 | |
| 3866 | mutex_lock(&client_mutex); |
| 3867 | |
| 3868 | list_for_each_entry(codec, &codec_list, list) { |
| 3869 | if (codec->dev == dev) { |
| 3870 | dev_dbg(dev, "ASoC: Mapped DAI %s to " |
| 3871 | "CODEC %s\n", dai->name, codec->name); |
| 3872 | dai->codec = codec; |
| 3873 | break; |
| 3874 | } |
| 3875 | } |
| 3876 | |
| 3877 | if (!dai->codec) |
| 3878 | dai->dapm.idle_bias_off = 1; |
| 3879 | |
| 3880 | list_add(&dai->list, &dai_list); |
| 3881 | |
| 3882 | mutex_unlock(&client_mutex); |
| 3883 | |
| 3884 | dev_dbg(dai->dev, "ASoC: Registered DAI '%s'\n", dai->name); |
| 3885 | } |
| 3886 | |
| 3887 | return 0; |
| 3888 | |
| 3889 | err: |
| 3890 | for (i--; i >= 0; i--) |
| 3891 | snd_soc_unregister_dai(dev); |
| 3892 | |
| 3893 | return ret; |
| 3894 | } |
| 3895 | |
| 3896 | /** |
| 3897 | * snd_soc_unregister_dais - Unregister multiple DAIs from the ASoC core |
| 3898 | * |
| 3899 | * @dai: Array of DAIs to unregister |
| 3900 | * @count: Number of DAIs |
| 3901 | */ |
| 3902 | static void snd_soc_unregister_dais(struct device *dev, size_t count) |
| 3903 | { |
| 3904 | int i; |
| 3905 | |
| 3906 | for (i = 0; i < count; i++) |
| 3907 | snd_soc_unregister_dai(dev); |
| 3908 | } |
| 3909 | |
| 3910 | /** |
| 3911 | * snd_soc_add_platform - Add a platform to the ASoC core |
| 3912 | * @dev: The parent device for the platform |
| 3913 | * @platform: The platform to add |
| 3914 | * @platform_driver: The driver for the platform |
| 3915 | */ |
| 3916 | int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, |
| 3917 | const struct snd_soc_platform_driver *platform_drv) |
| 3918 | { |
| 3919 | /* create platform component name */ |
| 3920 | platform->name = fmt_single_name(dev, &platform->id); |
| 3921 | if (platform->name == NULL) { |
| 3922 | kfree(platform); |
| 3923 | return -ENOMEM; |
| 3924 | } |
| 3925 | |
| 3926 | platform->dev = dev; |
| 3927 | platform->driver = platform_drv; |
| 3928 | platform->dapm.dev = dev; |
| 3929 | platform->dapm.platform = platform; |
| 3930 | platform->dapm.stream_event = platform_drv->stream_event; |
| 3931 | mutex_init(&platform->mutex); |
| 3932 | |
| 3933 | mutex_lock(&client_mutex); |
| 3934 | list_add(&platform->list, &platform_list); |
| 3935 | mutex_unlock(&client_mutex); |
| 3936 | |
| 3937 | dev_dbg(dev, "ASoC: Registered platform '%s'\n", platform->name); |
| 3938 | |
| 3939 | return 0; |
| 3940 | } |
| 3941 | EXPORT_SYMBOL_GPL(snd_soc_add_platform); |
| 3942 | |
| 3943 | /** |
| 3944 | * snd_soc_register_platform - Register a platform with the ASoC core |
| 3945 | * |
| 3946 | * @platform: platform to register |
| 3947 | */ |
| 3948 | int snd_soc_register_platform(struct device *dev, |
| 3949 | const struct snd_soc_platform_driver *platform_drv) |
| 3950 | { |
| 3951 | struct snd_soc_platform *platform; |
| 3952 | int ret; |
| 3953 | |
| 3954 | dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev)); |
| 3955 | |
| 3956 | platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL); |
| 3957 | if (platform == NULL) |
| 3958 | return -ENOMEM; |
| 3959 | |
| 3960 | ret = snd_soc_add_platform(dev, platform, platform_drv); |
| 3961 | if (ret) |
| 3962 | kfree(platform); |
| 3963 | |
| 3964 | return ret; |
| 3965 | } |
| 3966 | EXPORT_SYMBOL_GPL(snd_soc_register_platform); |
| 3967 | |
| 3968 | /** |
| 3969 | * snd_soc_remove_platform - Remove a platform from the ASoC core |
| 3970 | * @platform: the platform to remove |
| 3971 | */ |
| 3972 | void snd_soc_remove_platform(struct snd_soc_platform *platform) |
| 3973 | { |
| 3974 | mutex_lock(&client_mutex); |
| 3975 | list_del(&platform->list); |
| 3976 | mutex_unlock(&client_mutex); |
| 3977 | |
| 3978 | dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n", |
| 3979 | platform->name); |
| 3980 | kfree(platform->name); |
| 3981 | } |
| 3982 | EXPORT_SYMBOL_GPL(snd_soc_remove_platform); |
| 3983 | |
| 3984 | struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev) |
| 3985 | { |
| 3986 | struct snd_soc_platform *platform; |
| 3987 | |
| 3988 | list_for_each_entry(platform, &platform_list, list) { |
| 3989 | if (dev == platform->dev) |
| 3990 | return platform; |
| 3991 | } |
| 3992 | |
| 3993 | return NULL; |
| 3994 | } |
| 3995 | EXPORT_SYMBOL_GPL(snd_soc_lookup_platform); |
| 3996 | |
| 3997 | /** |
| 3998 | * snd_soc_unregister_platform - Unregister a platform from the ASoC core |
| 3999 | * |
| 4000 | * @platform: platform to unregister |
| 4001 | */ |
| 4002 | void snd_soc_unregister_platform(struct device *dev) |
| 4003 | { |
| 4004 | struct snd_soc_platform *platform; |
| 4005 | |
| 4006 | platform = snd_soc_lookup_platform(dev); |
| 4007 | if (!platform) |
| 4008 | return; |
| 4009 | |
| 4010 | snd_soc_remove_platform(platform); |
| 4011 | kfree(platform); |
| 4012 | } |
| 4013 | EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); |
| 4014 | |
| 4015 | static u64 codec_format_map[] = { |
| 4016 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE, |
| 4017 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE, |
| 4018 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE, |
| 4019 | SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE, |
| 4020 | SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE, |
| 4021 | SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_U32_BE, |
| 4022 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, |
| 4023 | SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_U24_3BE, |
| 4024 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE, |
| 4025 | SNDRV_PCM_FMTBIT_U20_3LE | SNDRV_PCM_FMTBIT_U20_3BE, |
| 4026 | SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE, |
| 4027 | SNDRV_PCM_FMTBIT_U18_3LE | SNDRV_PCM_FMTBIT_U18_3BE, |
| 4028 | SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE, |
| 4029 | SNDRV_PCM_FMTBIT_FLOAT64_LE | SNDRV_PCM_FMTBIT_FLOAT64_BE, |
| 4030 | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE |
| 4031 | | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, |
| 4032 | }; |
| 4033 | |
| 4034 | /* Fix up the DAI formats for endianness: codecs don't actually see |
| 4035 | * the endianness of the data but we're using the CPU format |
| 4036 | * definitions which do need to include endianness so we ensure that |
| 4037 | * codec DAIs always have both big and little endian variants set. |
| 4038 | */ |
| 4039 | static void fixup_codec_formats(struct snd_soc_pcm_stream *stream) |
| 4040 | { |
| 4041 | int i; |
| 4042 | |
| 4043 | for (i = 0; i < ARRAY_SIZE(codec_format_map); i++) |
| 4044 | if (stream->formats & codec_format_map[i]) |
| 4045 | stream->formats |= codec_format_map[i]; |
| 4046 | } |
| 4047 | |
| 4048 | /** |
| 4049 | * snd_soc_register_codec - Register a codec with the ASoC core |
| 4050 | * |
| 4051 | * @codec: codec to register |
| 4052 | */ |
| 4053 | int snd_soc_register_codec(struct device *dev, |
| 4054 | const struct snd_soc_codec_driver *codec_drv, |
| 4055 | struct snd_soc_dai_driver *dai_drv, |
| 4056 | int num_dai) |
| 4057 | { |
| 4058 | size_t reg_size; |
| 4059 | struct snd_soc_codec *codec; |
| 4060 | int ret, i; |
| 4061 | |
| 4062 | dev_dbg(dev, "codec register %s\n", dev_name(dev)); |
| 4063 | |
| 4064 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 4065 | if (codec == NULL) |
| 4066 | return -ENOMEM; |
| 4067 | |
| 4068 | /* create CODEC component name */ |
| 4069 | codec->name = fmt_single_name(dev, &codec->id); |
| 4070 | if (codec->name == NULL) { |
| 4071 | ret = -ENOMEM; |
| 4072 | goto fail_codec; |
| 4073 | } |
| 4074 | |
| 4075 | if (codec_drv->compress_type) |
| 4076 | codec->compress_type = codec_drv->compress_type; |
| 4077 | else |
| 4078 | codec->compress_type = SND_SOC_FLAT_COMPRESSION; |
| 4079 | |
| 4080 | codec->write = codec_drv->write; |
| 4081 | codec->read = codec_drv->read; |
| 4082 | codec->volatile_register = codec_drv->volatile_register; |
| 4083 | codec->readable_register = codec_drv->readable_register; |
| 4084 | codec->writable_register = codec_drv->writable_register; |
| 4085 | codec->ignore_pmdown_time = codec_drv->ignore_pmdown_time; |
| 4086 | codec->dapm.bias_level = SND_SOC_BIAS_OFF; |
| 4087 | codec->dapm.dev = dev; |
| 4088 | codec->dapm.codec = codec; |
| 4089 | codec->dapm.seq_notifier = codec_drv->seq_notifier; |
| 4090 | codec->dapm.stream_event = codec_drv->stream_event; |
| 4091 | codec->dev = dev; |
| 4092 | codec->driver = codec_drv; |
| 4093 | codec->num_dai = num_dai; |
| 4094 | mutex_init(&codec->mutex); |
| 4095 | |
| 4096 | /* allocate CODEC register cache */ |
| 4097 | if (codec_drv->reg_cache_size && codec_drv->reg_word_size) { |
| 4098 | reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size; |
| 4099 | codec->reg_size = reg_size; |
| 4100 | /* it is necessary to make a copy of the default register cache |
| 4101 | * because in the case of using a compression type that requires |
| 4102 | * the default register cache to be marked as the |
| 4103 | * kernel might have freed the array by the time we initialize |
| 4104 | * the cache. |
| 4105 | */ |
| 4106 | if (codec_drv->reg_cache_default) { |
| 4107 | codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default, |
| 4108 | reg_size, GFP_KERNEL); |
| 4109 | if (!codec->reg_def_copy) { |
| 4110 | ret = -ENOMEM; |
| 4111 | goto fail_codec_name; |
| 4112 | } |
| 4113 | } |
| 4114 | } |
| 4115 | |
| 4116 | if (codec_drv->reg_access_size && codec_drv->reg_access_default) { |
| 4117 | if (!codec->volatile_register) |
| 4118 | codec->volatile_register = snd_soc_default_volatile_register; |
| 4119 | if (!codec->readable_register) |
| 4120 | codec->readable_register = snd_soc_default_readable_register; |
| 4121 | if (!codec->writable_register) |
| 4122 | codec->writable_register = snd_soc_default_writable_register; |
| 4123 | } |
| 4124 | |
| 4125 | for (i = 0; i < num_dai; i++) { |
| 4126 | fixup_codec_formats(&dai_drv[i].playback); |
| 4127 | fixup_codec_formats(&dai_drv[i].capture); |
| 4128 | } |
| 4129 | |
| 4130 | mutex_lock(&client_mutex); |
| 4131 | list_add(&codec->list, &codec_list); |
| 4132 | mutex_unlock(&client_mutex); |
| 4133 | |
| 4134 | /* register any DAIs */ |
| 4135 | ret = snd_soc_register_dais(dev, dai_drv, num_dai); |
| 4136 | if (ret < 0) { |
| 4137 | dev_err(codec->dev, "ASoC: Failed to regster DAIs: %d\n", ret); |
| 4138 | goto fail_codec_name; |
| 4139 | } |
| 4140 | |
| 4141 | dev_dbg(codec->dev, "ASoC: Registered codec '%s'\n", codec->name); |
| 4142 | return 0; |
| 4143 | |
| 4144 | fail_codec_name: |
| 4145 | mutex_lock(&client_mutex); |
| 4146 | list_del(&codec->list); |
| 4147 | mutex_unlock(&client_mutex); |
| 4148 | |
| 4149 | kfree(codec->name); |
| 4150 | fail_codec: |
| 4151 | kfree(codec); |
| 4152 | return ret; |
| 4153 | } |
| 4154 | EXPORT_SYMBOL_GPL(snd_soc_register_codec); |
| 4155 | |
| 4156 | /** |
| 4157 | * snd_soc_unregister_codec - Unregister a codec from the ASoC core |
| 4158 | * |
| 4159 | * @codec: codec to unregister |
| 4160 | */ |
| 4161 | void snd_soc_unregister_codec(struct device *dev) |
| 4162 | { |
| 4163 | struct snd_soc_codec *codec; |
| 4164 | |
| 4165 | list_for_each_entry(codec, &codec_list, list) { |
| 4166 | if (dev == codec->dev) |
| 4167 | goto found; |
| 4168 | } |
| 4169 | return; |
| 4170 | |
| 4171 | found: |
| 4172 | snd_soc_unregister_dais(dev, codec->num_dai); |
| 4173 | |
| 4174 | mutex_lock(&client_mutex); |
| 4175 | list_del(&codec->list); |
| 4176 | mutex_unlock(&client_mutex); |
| 4177 | |
| 4178 | dev_dbg(codec->dev, "ASoC: Unregistered codec '%s'\n", codec->name); |
| 4179 | |
| 4180 | snd_soc_cache_exit(codec); |
| 4181 | kfree(codec->reg_def_copy); |
| 4182 | kfree(codec->name); |
| 4183 | kfree(codec); |
| 4184 | } |
| 4185 | EXPORT_SYMBOL_GPL(snd_soc_unregister_codec); |
| 4186 | |
| 4187 | |
| 4188 | /** |
| 4189 | * snd_soc_register_component - Register a component with the ASoC core |
| 4190 | * |
| 4191 | */ |
| 4192 | int snd_soc_register_component(struct device *dev, |
| 4193 | const struct snd_soc_component_driver *cmpnt_drv, |
| 4194 | struct snd_soc_dai_driver *dai_drv, |
| 4195 | int num_dai) |
| 4196 | { |
| 4197 | struct snd_soc_component *cmpnt; |
| 4198 | int ret; |
| 4199 | |
| 4200 | dev_dbg(dev, "component register %s\n", dev_name(dev)); |
| 4201 | |
| 4202 | cmpnt = devm_kzalloc(dev, sizeof(*cmpnt), GFP_KERNEL); |
| 4203 | if (!cmpnt) { |
| 4204 | dev_err(dev, "ASoC: Failed to allocate memory\n"); |
| 4205 | return -ENOMEM; |
| 4206 | } |
| 4207 | |
| 4208 | cmpnt->name = fmt_single_name(dev, &cmpnt->id); |
| 4209 | if (!cmpnt->name) { |
| 4210 | dev_err(dev, "ASoC: Failed to simplifying name\n"); |
| 4211 | return -ENOMEM; |
| 4212 | } |
| 4213 | |
| 4214 | cmpnt->dev = dev; |
| 4215 | cmpnt->driver = cmpnt_drv; |
| 4216 | cmpnt->num_dai = num_dai; |
| 4217 | |
| 4218 | /* |
| 4219 | * snd_soc_register_dai() uses fmt_single_name(), and |
| 4220 | * snd_soc_register_dais() uses fmt_multiple_name() |
| 4221 | * for dai->name which is used for name based matching |
| 4222 | */ |
| 4223 | if (1 == num_dai) |
| 4224 | ret = snd_soc_register_dai(dev, dai_drv); |
| 4225 | else |
| 4226 | ret = snd_soc_register_dais(dev, dai_drv, num_dai); |
| 4227 | if (ret < 0) { |
| 4228 | dev_err(dev, "ASoC: Failed to regster DAIs: %d\n", ret); |
| 4229 | goto error_component_name; |
| 4230 | } |
| 4231 | |
| 4232 | mutex_lock(&client_mutex); |
| 4233 | list_add(&cmpnt->list, &component_list); |
| 4234 | mutex_unlock(&client_mutex); |
| 4235 | |
| 4236 | dev_dbg(cmpnt->dev, "ASoC: Registered component '%s'\n", cmpnt->name); |
| 4237 | |
| 4238 | return ret; |
| 4239 | |
| 4240 | error_component_name: |
| 4241 | kfree(cmpnt->name); |
| 4242 | |
| 4243 | return ret; |
| 4244 | } |
| 4245 | EXPORT_SYMBOL_GPL(snd_soc_register_component); |
| 4246 | |
| 4247 | /** |
| 4248 | * snd_soc_unregister_component - Unregister a component from the ASoC core |
| 4249 | * |
| 4250 | */ |
| 4251 | void snd_soc_unregister_component(struct device *dev) |
| 4252 | { |
| 4253 | struct snd_soc_component *cmpnt; |
| 4254 | |
| 4255 | list_for_each_entry(cmpnt, &component_list, list) { |
| 4256 | if (dev == cmpnt->dev) |
| 4257 | goto found; |
| 4258 | } |
| 4259 | return; |
| 4260 | |
| 4261 | found: |
| 4262 | snd_soc_unregister_dais(dev, cmpnt->num_dai); |
| 4263 | |
| 4264 | mutex_lock(&client_mutex); |
| 4265 | list_del(&cmpnt->list); |
| 4266 | mutex_unlock(&client_mutex); |
| 4267 | |
| 4268 | dev_dbg(dev, "ASoC: Unregistered component '%s'\n", cmpnt->name); |
| 4269 | kfree(cmpnt->name); |
| 4270 | } |
| 4271 | EXPORT_SYMBOL_GPL(snd_soc_unregister_component); |
| 4272 | |
| 4273 | /* Retrieve a card's name from device tree */ |
| 4274 | int snd_soc_of_parse_card_name(struct snd_soc_card *card, |
| 4275 | const char *propname) |
| 4276 | { |
| 4277 | struct device_node *np = card->dev->of_node; |
| 4278 | int ret; |
| 4279 | |
| 4280 | ret = of_property_read_string_index(np, propname, 0, &card->name); |
| 4281 | /* |
| 4282 | * EINVAL means the property does not exist. This is fine providing |
| 4283 | * card->name was previously set, which is checked later in |
| 4284 | * snd_soc_register_card. |
| 4285 | */ |
| 4286 | if (ret < 0 && ret != -EINVAL) { |
| 4287 | dev_err(card->dev, |
| 4288 | "ASoC: Property '%s' could not be read: %d\n", |
| 4289 | propname, ret); |
| 4290 | return ret; |
| 4291 | } |
| 4292 | |
| 4293 | return 0; |
| 4294 | } |
| 4295 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_card_name); |
| 4296 | |
| 4297 | int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, |
| 4298 | const char *propname) |
| 4299 | { |
| 4300 | struct device_node *np = card->dev->of_node; |
| 4301 | int num_routes; |
| 4302 | struct snd_soc_dapm_route *routes; |
| 4303 | int i, ret; |
| 4304 | |
| 4305 | num_routes = of_property_count_strings(np, propname); |
| 4306 | if (num_routes < 0 || num_routes & 1) { |
| 4307 | dev_err(card->dev, "ASoC: Property '%s' does not exist or its" |
| 4308 | " length is not even\n", propname); |
| 4309 | return -EINVAL; |
| 4310 | } |
| 4311 | num_routes /= 2; |
| 4312 | if (!num_routes) { |
| 4313 | dev_err(card->dev, "ASoC: Property '%s's length is zero\n", |
| 4314 | propname); |
| 4315 | return -EINVAL; |
| 4316 | } |
| 4317 | |
| 4318 | routes = devm_kzalloc(card->dev, num_routes * sizeof(*routes), |
| 4319 | GFP_KERNEL); |
| 4320 | if (!routes) { |
| 4321 | dev_err(card->dev, |
| 4322 | "ASoC: Could not allocate DAPM route table\n"); |
| 4323 | return -EINVAL; |
| 4324 | } |
| 4325 | |
| 4326 | for (i = 0; i < num_routes; i++) { |
| 4327 | ret = of_property_read_string_index(np, propname, |
| 4328 | 2 * i, &routes[i].sink); |
| 4329 | if (ret) { |
| 4330 | dev_err(card->dev, |
| 4331 | "ASoC: Property '%s' index %d could not be read: %d\n", |
| 4332 | propname, 2 * i, ret); |
| 4333 | return -EINVAL; |
| 4334 | } |
| 4335 | ret = of_property_read_string_index(np, propname, |
| 4336 | (2 * i) + 1, &routes[i].source); |
| 4337 | if (ret) { |
| 4338 | dev_err(card->dev, |
| 4339 | "ASoC: Property '%s' index %d could not be read: %d\n", |
| 4340 | propname, (2 * i) + 1, ret); |
| 4341 | return -EINVAL; |
| 4342 | } |
| 4343 | } |
| 4344 | |
| 4345 | card->num_dapm_routes = num_routes; |
| 4346 | card->dapm_routes = routes; |
| 4347 | |
| 4348 | return 0; |
| 4349 | } |
| 4350 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_audio_routing); |
| 4351 | |
| 4352 | unsigned int snd_soc_of_parse_daifmt(struct device_node *np, |
| 4353 | const char *prefix) |
| 4354 | { |
| 4355 | int ret, i; |
| 4356 | char prop[128]; |
| 4357 | unsigned int format = 0; |
| 4358 | int bit, frame; |
| 4359 | const char *str; |
| 4360 | struct { |
| 4361 | char *name; |
| 4362 | unsigned int val; |
| 4363 | } of_fmt_table[] = { |
| 4364 | { "i2s", SND_SOC_DAIFMT_I2S }, |
| 4365 | { "right_j", SND_SOC_DAIFMT_RIGHT_J }, |
| 4366 | { "left_j", SND_SOC_DAIFMT_LEFT_J }, |
| 4367 | { "dsp_a", SND_SOC_DAIFMT_DSP_A }, |
| 4368 | { "dsp_b", SND_SOC_DAIFMT_DSP_B }, |
| 4369 | { "ac97", SND_SOC_DAIFMT_AC97 }, |
| 4370 | { "pdm", SND_SOC_DAIFMT_PDM}, |
| 4371 | { "msb", SND_SOC_DAIFMT_MSB }, |
| 4372 | { "lsb", SND_SOC_DAIFMT_LSB }, |
| 4373 | }; |
| 4374 | |
| 4375 | if (!prefix) |
| 4376 | prefix = ""; |
| 4377 | |
| 4378 | /* |
| 4379 | * check "[prefix]format = xxx" |
| 4380 | * SND_SOC_DAIFMT_FORMAT_MASK area |
| 4381 | */ |
| 4382 | snprintf(prop, sizeof(prop), "%sformat", prefix); |
| 4383 | ret = of_property_read_string(np, prop, &str); |
| 4384 | if (ret == 0) { |
| 4385 | for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) { |
| 4386 | if (strcmp(str, of_fmt_table[i].name) == 0) { |
| 4387 | format |= of_fmt_table[i].val; |
| 4388 | break; |
| 4389 | } |
| 4390 | } |
| 4391 | } |
| 4392 | |
| 4393 | /* |
| 4394 | * check "[prefix]continuous-clock" |
| 4395 | * SND_SOC_DAIFMT_CLOCK_MASK area |
| 4396 | */ |
| 4397 | snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix); |
| 4398 | if (of_get_property(np, prop, NULL)) |
| 4399 | format |= SND_SOC_DAIFMT_CONT; |
| 4400 | else |
| 4401 | format |= SND_SOC_DAIFMT_GATED; |
| 4402 | |
| 4403 | /* |
| 4404 | * check "[prefix]bitclock-inversion" |
| 4405 | * check "[prefix]frame-inversion" |
| 4406 | * SND_SOC_DAIFMT_INV_MASK area |
| 4407 | */ |
| 4408 | snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix); |
| 4409 | bit = !!of_get_property(np, prop, NULL); |
| 4410 | |
| 4411 | snprintf(prop, sizeof(prop), "%sframe-inversion", prefix); |
| 4412 | frame = !!of_get_property(np, prop, NULL); |
| 4413 | |
| 4414 | switch ((bit << 4) + frame) { |
| 4415 | case 0x11: |
| 4416 | format |= SND_SOC_DAIFMT_IB_IF; |
| 4417 | break; |
| 4418 | case 0x10: |
| 4419 | format |= SND_SOC_DAIFMT_IB_NF; |
| 4420 | break; |
| 4421 | case 0x01: |
| 4422 | format |= SND_SOC_DAIFMT_NB_IF; |
| 4423 | break; |
| 4424 | default: |
| 4425 | /* SND_SOC_DAIFMT_NB_NF is default */ |
| 4426 | break; |
| 4427 | } |
| 4428 | |
| 4429 | /* |
| 4430 | * check "[prefix]bitclock-master" |
| 4431 | * check "[prefix]frame-master" |
| 4432 | * SND_SOC_DAIFMT_MASTER_MASK area |
| 4433 | */ |
| 4434 | snprintf(prop, sizeof(prop), "%sbitclock-master", prefix); |
| 4435 | bit = !!of_get_property(np, prop, NULL); |
| 4436 | |
| 4437 | snprintf(prop, sizeof(prop), "%sframe-master", prefix); |
| 4438 | frame = !!of_get_property(np, prop, NULL); |
| 4439 | |
| 4440 | switch ((bit << 4) + frame) { |
| 4441 | case 0x11: |
| 4442 | format |= SND_SOC_DAIFMT_CBM_CFM; |
| 4443 | break; |
| 4444 | case 0x10: |
| 4445 | format |= SND_SOC_DAIFMT_CBM_CFS; |
| 4446 | break; |
| 4447 | case 0x01: |
| 4448 | format |= SND_SOC_DAIFMT_CBS_CFM; |
| 4449 | break; |
| 4450 | default: |
| 4451 | format |= SND_SOC_DAIFMT_CBS_CFS; |
| 4452 | break; |
| 4453 | } |
| 4454 | |
| 4455 | return format; |
| 4456 | } |
| 4457 | EXPORT_SYMBOL_GPL(snd_soc_of_parse_daifmt); |
| 4458 | |
| 4459 | static int __init snd_soc_init(void) |
| 4460 | { |
| 4461 | #ifdef CONFIG_DEBUG_FS |
| 4462 | snd_soc_debugfs_root = debugfs_create_dir("asoc", NULL); |
| 4463 | if (IS_ERR(snd_soc_debugfs_root) || !snd_soc_debugfs_root) { |
| 4464 | pr_warn("ASoC: Failed to create debugfs directory\n"); |
| 4465 | snd_soc_debugfs_root = NULL; |
| 4466 | } |
| 4467 | |
| 4468 | if (!debugfs_create_file("codecs", 0444, snd_soc_debugfs_root, NULL, |
| 4469 | &codec_list_fops)) |
| 4470 | pr_warn("ASoC: Failed to create CODEC list debugfs file\n"); |
| 4471 | |
| 4472 | if (!debugfs_create_file("dais", 0444, snd_soc_debugfs_root, NULL, |
| 4473 | &dai_list_fops)) |
| 4474 | pr_warn("ASoC: Failed to create DAI list debugfs file\n"); |
| 4475 | |
| 4476 | if (!debugfs_create_file("platforms", 0444, snd_soc_debugfs_root, NULL, |
| 4477 | &platform_list_fops)) |
| 4478 | pr_warn("ASoC: Failed to create platform list debugfs file\n"); |
| 4479 | #endif |
| 4480 | |
| 4481 | snd_soc_util_init(); |
| 4482 | |
| 4483 | return platform_driver_register(&soc_driver); |
| 4484 | } |
| 4485 | module_init(snd_soc_init); |
| 4486 | |
| 4487 | static void __exit snd_soc_exit(void) |
| 4488 | { |
| 4489 | snd_soc_util_exit(); |
| 4490 | |
| 4491 | #ifdef CONFIG_DEBUG_FS |
| 4492 | debugfs_remove_recursive(snd_soc_debugfs_root); |
| 4493 | #endif |
| 4494 | platform_driver_unregister(&soc_driver); |
| 4495 | } |
| 4496 | module_exit(snd_soc_exit); |
| 4497 | |
| 4498 | /* Module information */ |
| 4499 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
| 4500 | MODULE_DESCRIPTION("ALSA SoC Core"); |
| 4501 | MODULE_LICENSE("GPL"); |
| 4502 | MODULE_ALIAS("platform:soc-audio"); |