Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 1 | /* |
| 2 | * HD-audio codec core device |
| 3 | */ |
| 4 | |
| 5 | #include <linux/init.h> |
| 6 | #include <linux/device.h> |
| 7 | #include <linux/slab.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/export.h> |
| 10 | #include <linux/pm_runtime.h> |
| 11 | #include <sound/hdaudio.h> |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 12 | #include <sound/hda_regmap.h> |
Takashi Iwai | b7d023e | 2015-04-16 08:19:06 +0200 | [diff] [blame] | 13 | #include <sound/pcm.h> |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 14 | #include "local.h" |
| 15 | |
| 16 | static void setup_fg_nodes(struct hdac_device *codec); |
| 17 | static int get_codec_vendor_name(struct hdac_device *codec); |
| 18 | |
| 19 | static void default_release(struct device *dev) |
| 20 | { |
| 21 | snd_hdac_device_exit(container_of(dev, struct hdac_device, dev)); |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * snd_hdac_device_init - initialize the HD-audio codec base device |
| 26 | * @codec: device to initialize |
| 27 | * @bus: but to attach |
| 28 | * @name: device name string |
| 29 | * @addr: codec address |
| 30 | * |
| 31 | * Returns zero for success or a negative error code. |
| 32 | * |
| 33 | * This function increments the runtime PM counter and marks it active. |
| 34 | * The caller needs to turn it off appropriately later. |
| 35 | * |
| 36 | * The caller needs to set the device's release op properly by itself. |
| 37 | */ |
| 38 | int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus, |
| 39 | const char *name, unsigned int addr) |
| 40 | { |
| 41 | struct device *dev; |
| 42 | hda_nid_t fg; |
| 43 | int err; |
| 44 | |
| 45 | dev = &codec->dev; |
| 46 | device_initialize(dev); |
| 47 | dev->parent = bus->dev; |
| 48 | dev->bus = &snd_hda_bus_type; |
| 49 | dev->release = default_release; |
Takashi Iwai | 3256be6 | 2015-02-24 14:59:42 +0100 | [diff] [blame] | 50 | dev->groups = hdac_dev_attr_groups; |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 51 | dev_set_name(dev, "%s", name); |
| 52 | device_enable_async_suspend(dev); |
| 53 | |
| 54 | codec->bus = bus; |
| 55 | codec->addr = addr; |
| 56 | codec->type = HDA_DEV_CORE; |
| 57 | pm_runtime_set_active(&codec->dev); |
| 58 | pm_runtime_get_noresume(&codec->dev); |
| 59 | atomic_set(&codec->in_pm, 0); |
| 60 | |
| 61 | err = snd_hdac_bus_add_device(bus, codec); |
| 62 | if (err < 0) |
| 63 | goto error; |
| 64 | |
| 65 | /* fill parameters */ |
| 66 | codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| 67 | AC_PAR_VENDOR_ID); |
| 68 | if (codec->vendor_id == -1) { |
| 69 | /* read again, hopefully the access method was corrected |
| 70 | * in the last read... |
| 71 | */ |
| 72 | codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| 73 | AC_PAR_VENDOR_ID); |
| 74 | } |
| 75 | |
| 76 | codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| 77 | AC_PAR_SUBSYSTEM_ID); |
| 78 | codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT, |
| 79 | AC_PAR_REV_ID); |
| 80 | |
| 81 | setup_fg_nodes(codec); |
| 82 | if (!codec->afg && !codec->mfg) { |
| 83 | dev_err(dev, "no AFG or MFG node found\n"); |
| 84 | err = -ENODEV; |
| 85 | goto error; |
| 86 | } |
| 87 | |
| 88 | fg = codec->afg ? codec->afg : codec->mfg; |
| 89 | |
| 90 | err = snd_hdac_refresh_widgets(codec); |
| 91 | if (err < 0) |
| 92 | goto error; |
| 93 | |
| 94 | codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE); |
| 95 | /* reread ssid if not set by parameter */ |
David Henningsson | ffda568 | 2015-04-01 12:43:00 +0200 | [diff] [blame] | 96 | if (codec->subsystem_id == -1 || codec->subsystem_id == 0) |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 97 | snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0, |
| 98 | &codec->subsystem_id); |
| 99 | |
| 100 | err = get_codec_vendor_name(codec); |
| 101 | if (err < 0) |
| 102 | goto error; |
| 103 | |
| 104 | codec->chip_name = kasprintf(GFP_KERNEL, "ID %x", |
| 105 | codec->vendor_id & 0xffff); |
| 106 | if (!codec->chip_name) { |
| 107 | err = -ENOMEM; |
| 108 | goto error; |
| 109 | } |
| 110 | |
| 111 | return 0; |
| 112 | |
| 113 | error: |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 114 | put_device(&codec->dev); |
| 115 | return err; |
| 116 | } |
| 117 | EXPORT_SYMBOL_GPL(snd_hdac_device_init); |
| 118 | |
| 119 | /** |
| 120 | * snd_hdac_device_exit - clean up the HD-audio codec base device |
| 121 | * @codec: device to clean up |
| 122 | */ |
| 123 | void snd_hdac_device_exit(struct hdac_device *codec) |
| 124 | { |
Takashi Iwai | c4c2533 | 2015-03-03 17:22:12 +0100 | [diff] [blame] | 125 | pm_runtime_put_noidle(&codec->dev); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 126 | snd_hdac_bus_remove_device(codec->bus, codec); |
| 127 | kfree(codec->vendor_name); |
| 128 | kfree(codec->chip_name); |
| 129 | } |
| 130 | EXPORT_SYMBOL_GPL(snd_hdac_device_exit); |
| 131 | |
| 132 | /** |
Takashi Iwai | 3256be6 | 2015-02-24 14:59:42 +0100 | [diff] [blame] | 133 | * snd_hdac_device_register - register the hd-audio codec base device |
| 134 | * codec: the device to register |
| 135 | */ |
| 136 | int snd_hdac_device_register(struct hdac_device *codec) |
| 137 | { |
| 138 | int err; |
| 139 | |
| 140 | err = device_add(&codec->dev); |
| 141 | if (err < 0) |
| 142 | return err; |
| 143 | err = hda_widget_sysfs_init(codec); |
| 144 | if (err < 0) { |
| 145 | device_del(&codec->dev); |
| 146 | return err; |
| 147 | } |
| 148 | |
| 149 | return 0; |
| 150 | } |
| 151 | EXPORT_SYMBOL_GPL(snd_hdac_device_register); |
| 152 | |
| 153 | /** |
| 154 | * snd_hdac_device_unregister - unregister the hd-audio codec base device |
| 155 | * codec: the device to unregister |
| 156 | */ |
| 157 | void snd_hdac_device_unregister(struct hdac_device *codec) |
| 158 | { |
| 159 | if (device_is_registered(&codec->dev)) { |
| 160 | hda_widget_sysfs_exit(codec); |
| 161 | device_del(&codec->dev); |
| 162 | } |
| 163 | } |
| 164 | EXPORT_SYMBOL_GPL(snd_hdac_device_unregister); |
| 165 | |
| 166 | /** |
Takashi Iwai | ded255b | 2015-10-01 17:59:43 +0200 | [diff] [blame] | 167 | * snd_hdac_device_set_chip_name - set/update the codec name |
| 168 | * @codec: the HDAC device |
| 169 | * @name: name string to set |
| 170 | * |
| 171 | * Returns 0 if the name is set or updated, or a negative error code. |
| 172 | */ |
| 173 | int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name) |
| 174 | { |
| 175 | char *newname; |
| 176 | |
| 177 | if (!name) |
| 178 | return 0; |
| 179 | newname = kstrdup(name, GFP_KERNEL); |
| 180 | if (!newname) |
| 181 | return -ENOMEM; |
| 182 | kfree(codec->chip_name); |
| 183 | codec->chip_name = newname; |
| 184 | return 0; |
| 185 | } |
| 186 | EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name); |
| 187 | |
| 188 | /** |
Takashi Iwai | 4f9e0c3 | 2015-10-16 11:35:49 +0200 | [diff] [blame] | 189 | * snd_hdac_codec_modalias - give the module alias name |
| 190 | * @codec: HDAC device |
| 191 | * @buf: string buffer to store |
| 192 | * @size: string buffer size |
| 193 | * |
| 194 | * Returns the size of string, like snprintf(), or a negative error code. |
| 195 | */ |
| 196 | int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size) |
| 197 | { |
| 198 | return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n", |
| 199 | codec->vendor_id, codec->revision_id, codec->type); |
| 200 | } |
| 201 | EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias); |
| 202 | |
| 203 | /** |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 204 | * snd_hdac_make_cmd - compose a 32bit command word to be sent to the |
| 205 | * HD-audio controller |
| 206 | * @codec: the codec object |
| 207 | * @nid: NID to encode |
| 208 | * @verb: verb to encode |
| 209 | * @parm: parameter to encode |
| 210 | * |
| 211 | * Return an encoded command verb or -1 for error. |
| 212 | */ |
| 213 | unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid, |
| 214 | unsigned int verb, unsigned int parm) |
| 215 | { |
| 216 | u32 val, addr; |
| 217 | |
| 218 | addr = codec->addr; |
| 219 | if ((addr & ~0xf) || (nid & ~0x7f) || |
| 220 | (verb & ~0xfff) || (parm & ~0xffff)) { |
| 221 | dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n", |
| 222 | addr, nid, verb, parm); |
| 223 | return -1; |
| 224 | } |
| 225 | |
| 226 | val = addr << 28; |
| 227 | val |= (u32)nid << 20; |
| 228 | val |= verb << 8; |
| 229 | val |= parm; |
| 230 | return val; |
| 231 | } |
| 232 | EXPORT_SYMBOL_GPL(snd_hdac_make_cmd); |
| 233 | |
| 234 | /** |
Takashi Iwai | 0585244 | 2015-03-03 15:40:08 +0100 | [diff] [blame] | 235 | * snd_hdac_exec_verb - execute an encoded verb |
| 236 | * @codec: the codec object |
| 237 | * @cmd: encoded verb to execute |
| 238 | * @flags: optional flags, pass zero for default |
| 239 | * @res: the pointer to store the result, NULL if running async |
| 240 | * |
| 241 | * Returns zero if successful, or a negative error code. |
| 242 | * |
| 243 | * This calls the exec_verb op when set in hdac_codec. If not, |
| 244 | * call the default snd_hdac_bus_exec_verb(). |
| 245 | */ |
| 246 | int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd, |
| 247 | unsigned int flags, unsigned int *res) |
| 248 | { |
| 249 | if (codec->exec_verb) |
| 250 | return codec->exec_verb(codec, cmd, flags, res); |
| 251 | return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res); |
| 252 | } |
| 253 | EXPORT_SYMBOL_GPL(snd_hdac_exec_verb); |
| 254 | |
| 255 | |
| 256 | /** |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 257 | * snd_hdac_read - execute a verb |
| 258 | * @codec: the codec object |
| 259 | * @nid: NID to execute a verb |
| 260 | * @verb: verb to execute |
| 261 | * @parm: parameter for a verb |
| 262 | * @res: the pointer to store the result, NULL if running async |
| 263 | * |
| 264 | * Returns zero if successful, or a negative error code. |
| 265 | */ |
| 266 | int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, |
| 267 | unsigned int verb, unsigned int parm, unsigned int *res) |
| 268 | { |
| 269 | unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm); |
| 270 | |
Takashi Iwai | 0585244 | 2015-03-03 15:40:08 +0100 | [diff] [blame] | 271 | return snd_hdac_exec_verb(codec, cmd, 0, res); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 272 | } |
| 273 | EXPORT_SYMBOL_GPL(snd_hdac_read); |
| 274 | |
| 275 | /** |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 276 | * _snd_hdac_read_parm - read a parmeter |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 277 | * |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 278 | * This function returns zero or an error unlike snd_hdac_read_parm(). |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 279 | */ |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 280 | int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, |
| 281 | unsigned int *res) |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 282 | { |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 283 | unsigned int cmd; |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 284 | |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 285 | cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm; |
| 286 | return snd_hdac_regmap_read_raw(codec, cmd, res); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 287 | } |
Takashi Iwai | 01ed3c0 | 2015-02-26 13:57:47 +0100 | [diff] [blame] | 288 | EXPORT_SYMBOL_GPL(_snd_hdac_read_parm); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 289 | |
| 290 | /** |
Takashi Iwai | 9ba17b4 | 2015-03-03 23:29:47 +0100 | [diff] [blame] | 291 | * snd_hdac_read_parm_uncached - read a codec parameter without caching |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 292 | * @codec: the codec object |
| 293 | * @nid: NID to read a parameter |
| 294 | * @parm: parameter to read |
| 295 | * |
| 296 | * Returns -1 for error. If you need to distinguish the error more |
| 297 | * strictly, use snd_hdac_read() directly. |
| 298 | */ |
Takashi Iwai | 9ba17b4 | 2015-03-03 23:29:47 +0100 | [diff] [blame] | 299 | int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, |
| 300 | int parm) |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 301 | { |
| 302 | int val; |
| 303 | |
Takashi Iwai | 9ba17b4 | 2015-03-03 23:29:47 +0100 | [diff] [blame] | 304 | if (codec->regmap) |
| 305 | regcache_cache_bypass(codec->regmap, true); |
| 306 | val = snd_hdac_read_parm(codec, nid, parm); |
| 307 | if (codec->regmap) |
| 308 | regcache_cache_bypass(codec->regmap, false); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 309 | return val; |
| 310 | } |
Takashi Iwai | 9ba17b4 | 2015-03-03 23:29:47 +0100 | [diff] [blame] | 311 | EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached); |
| 312 | |
| 313 | /** |
Takashi Iwai | faa75f8 | 2015-02-26 08:54:56 +0100 | [diff] [blame] | 314 | * snd_hdac_override_parm - override read-only parameters |
| 315 | * @codec: the codec object |
| 316 | * @nid: NID for the parameter |
| 317 | * @parm: the parameter to change |
| 318 | * @val: the parameter value to overwrite |
| 319 | */ |
| 320 | int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, |
| 321 | unsigned int parm, unsigned int val) |
| 322 | { |
| 323 | unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm; |
| 324 | int err; |
| 325 | |
| 326 | if (!codec->regmap) |
| 327 | return -EINVAL; |
| 328 | |
| 329 | codec->caps_overwriting = true; |
| 330 | err = snd_hdac_regmap_write_raw(codec, verb, val); |
| 331 | codec->caps_overwriting = false; |
| 332 | return err; |
| 333 | } |
| 334 | EXPORT_SYMBOL_GPL(snd_hdac_override_parm); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 335 | |
| 336 | /** |
| 337 | * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes |
| 338 | * @codec: the codec object |
| 339 | * @nid: NID to inspect |
| 340 | * @start_id: the pointer to store the starting NID |
| 341 | * |
| 342 | * Returns the number of subtree nodes or zero if not found. |
Takashi Iwai | 9ba17b4 | 2015-03-03 23:29:47 +0100 | [diff] [blame] | 343 | * This function reads parameters always without caching. |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 344 | */ |
| 345 | int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, |
| 346 | hda_nid_t *start_id) |
| 347 | { |
| 348 | unsigned int parm; |
| 349 | |
Takashi Iwai | 9ba17b4 | 2015-03-03 23:29:47 +0100 | [diff] [blame] | 350 | parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 351 | if (parm == -1) { |
| 352 | *start_id = 0; |
| 353 | return 0; |
| 354 | } |
| 355 | *start_id = (parm >> 16) & 0x7fff; |
| 356 | return (int)(parm & 0x7fff); |
| 357 | } |
| 358 | EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes); |
| 359 | |
| 360 | /* |
| 361 | * look for an AFG and MFG nodes |
| 362 | */ |
| 363 | static void setup_fg_nodes(struct hdac_device *codec) |
| 364 | { |
| 365 | int i, total_nodes, function_id; |
| 366 | hda_nid_t nid; |
| 367 | |
| 368 | total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid); |
| 369 | for (i = 0; i < total_nodes; i++, nid++) { |
| 370 | function_id = snd_hdac_read_parm(codec, nid, |
| 371 | AC_PAR_FUNCTION_TYPE); |
| 372 | switch (function_id & 0xff) { |
| 373 | case AC_GRP_AUDIO_FUNCTION: |
| 374 | codec->afg = nid; |
| 375 | codec->afg_function_id = function_id & 0xff; |
| 376 | codec->afg_unsol = (function_id >> 8) & 1; |
| 377 | break; |
| 378 | case AC_GRP_MODEM_FUNCTION: |
| 379 | codec->mfg = nid; |
| 380 | codec->mfg_function_id = function_id & 0xff; |
| 381 | codec->mfg_unsol = (function_id >> 8) & 1; |
| 382 | break; |
| 383 | default: |
| 384 | break; |
| 385 | } |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * snd_hdac_refresh_widgets - Reset the widget start/end nodes |
| 391 | * @codec: the codec object |
| 392 | */ |
| 393 | int snd_hdac_refresh_widgets(struct hdac_device *codec) |
| 394 | { |
| 395 | hda_nid_t start_nid; |
| 396 | int nums; |
| 397 | |
| 398 | nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid); |
| 399 | if (!start_nid || nums <= 0 || nums >= 0xff) { |
| 400 | dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n", |
| 401 | codec->afg); |
| 402 | return -EINVAL; |
| 403 | } |
| 404 | |
| 405 | codec->num_nodes = nums; |
| 406 | codec->start_nid = start_nid; |
| 407 | codec->end_nid = start_nid + nums; |
| 408 | return 0; |
| 409 | } |
| 410 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets); |
| 411 | |
Vinod Koul | 18dfd79 | 2015-08-21 15:47:43 +0530 | [diff] [blame] | 412 | /** |
| 413 | * snd_hdac_refresh_widget_sysfs - Reset the codec widgets and reinit the |
| 414 | * codec sysfs |
| 415 | * @codec: the codec object |
| 416 | * |
| 417 | * first we need to remove sysfs, then refresh widgets and lastly |
| 418 | * recreate it |
| 419 | */ |
| 420 | int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec) |
| 421 | { |
| 422 | int ret; |
| 423 | |
Takashi Iwai | a92d5ee | 2015-08-26 07:22:49 +0200 | [diff] [blame] | 424 | if (device_is_registered(&codec->dev)) |
| 425 | hda_widget_sysfs_exit(codec); |
Vinod Koul | 18dfd79 | 2015-08-21 15:47:43 +0530 | [diff] [blame] | 426 | ret = snd_hdac_refresh_widgets(codec); |
| 427 | if (ret) { |
| 428 | dev_err(&codec->dev, "failed to refresh widget: %d\n", ret); |
| 429 | return ret; |
| 430 | } |
Takashi Iwai | a92d5ee | 2015-08-26 07:22:49 +0200 | [diff] [blame] | 431 | if (device_is_registered(&codec->dev)) { |
| 432 | ret = hda_widget_sysfs_init(codec); |
| 433 | if (ret) { |
| 434 | dev_err(&codec->dev, "failed to init sysfs: %d\n", ret); |
| 435 | return ret; |
| 436 | } |
Vinod Koul | 18dfd79 | 2015-08-21 15:47:43 +0530 | [diff] [blame] | 437 | } |
Vinod Koul | 18dfd79 | 2015-08-21 15:47:43 +0530 | [diff] [blame] | 438 | return ret; |
| 439 | } |
| 440 | EXPORT_SYMBOL_GPL(snd_hdac_refresh_widget_sysfs); |
| 441 | |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 442 | /* return CONNLIST_LEN parameter of the given widget */ |
| 443 | static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid) |
| 444 | { |
| 445 | unsigned int wcaps = get_wcaps(codec, nid); |
| 446 | unsigned int parm; |
| 447 | |
| 448 | if (!(wcaps & AC_WCAP_CONN_LIST) && |
| 449 | get_wcaps_type(wcaps) != AC_WID_VOL_KNB) |
| 450 | return 0; |
| 451 | |
| 452 | parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN); |
| 453 | if (parm == -1) |
| 454 | parm = 0; |
| 455 | return parm; |
| 456 | } |
| 457 | |
| 458 | /** |
| 459 | * snd_hdac_get_connections - get a widget connection list |
| 460 | * @codec: the codec object |
| 461 | * @nid: NID |
| 462 | * @conn_list: the array to store the results, can be NULL |
| 463 | * @max_conns: the max size of the given array |
| 464 | * |
| 465 | * Returns the number of connected widgets, zero for no connection, or a |
| 466 | * negative error code. When the number of elements don't fit with the |
| 467 | * given array size, it returns -ENOSPC. |
| 468 | * |
| 469 | * When @conn_list is NULL, it just checks the number of connections. |
| 470 | */ |
| 471 | int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, |
| 472 | hda_nid_t *conn_list, int max_conns) |
| 473 | { |
| 474 | unsigned int parm; |
| 475 | int i, conn_len, conns, err; |
| 476 | unsigned int shift, num_elems, mask; |
| 477 | hda_nid_t prev_nid; |
| 478 | int null_count = 0; |
| 479 | |
| 480 | parm = get_num_conns(codec, nid); |
| 481 | if (!parm) |
| 482 | return 0; |
| 483 | |
| 484 | if (parm & AC_CLIST_LONG) { |
| 485 | /* long form */ |
| 486 | shift = 16; |
| 487 | num_elems = 2; |
| 488 | } else { |
| 489 | /* short form */ |
| 490 | shift = 8; |
| 491 | num_elems = 4; |
| 492 | } |
| 493 | conn_len = parm & AC_CLIST_LENGTH; |
| 494 | mask = (1 << (shift-1)) - 1; |
| 495 | |
| 496 | if (!conn_len) |
| 497 | return 0; /* no connection */ |
| 498 | |
| 499 | if (conn_len == 1) { |
| 500 | /* single connection */ |
| 501 | err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0, |
| 502 | &parm); |
| 503 | if (err < 0) |
| 504 | return err; |
| 505 | if (conn_list) |
| 506 | conn_list[0] = parm & mask; |
| 507 | return 1; |
| 508 | } |
| 509 | |
| 510 | /* multi connection */ |
| 511 | conns = 0; |
| 512 | prev_nid = 0; |
| 513 | for (i = 0; i < conn_len; i++) { |
| 514 | int range_val; |
| 515 | hda_nid_t val, n; |
| 516 | |
| 517 | if (i % num_elems == 0) { |
| 518 | err = snd_hdac_read(codec, nid, |
| 519 | AC_VERB_GET_CONNECT_LIST, i, |
| 520 | &parm); |
| 521 | if (err < 0) |
| 522 | return -EIO; |
| 523 | } |
| 524 | range_val = !!(parm & (1 << (shift-1))); /* ranges */ |
| 525 | val = parm & mask; |
| 526 | if (val == 0 && null_count++) { /* no second chance */ |
| 527 | dev_dbg(&codec->dev, |
| 528 | "invalid CONNECT_LIST verb %x[%i]:%x\n", |
| 529 | nid, i, parm); |
| 530 | return 0; |
| 531 | } |
| 532 | parm >>= shift; |
| 533 | if (range_val) { |
| 534 | /* ranges between the previous and this one */ |
| 535 | if (!prev_nid || prev_nid >= val) { |
| 536 | dev_warn(&codec->dev, |
| 537 | "invalid dep_range_val %x:%x\n", |
| 538 | prev_nid, val); |
| 539 | continue; |
| 540 | } |
| 541 | for (n = prev_nid + 1; n <= val; n++) { |
| 542 | if (conn_list) { |
| 543 | if (conns >= max_conns) |
| 544 | return -ENOSPC; |
| 545 | conn_list[conns] = n; |
| 546 | } |
| 547 | conns++; |
| 548 | } |
| 549 | } else { |
| 550 | if (conn_list) { |
| 551 | if (conns >= max_conns) |
| 552 | return -ENOSPC; |
| 553 | conn_list[conns] = val; |
| 554 | } |
| 555 | conns++; |
| 556 | } |
| 557 | prev_nid = val; |
| 558 | } |
| 559 | return conns; |
| 560 | } |
| 561 | EXPORT_SYMBOL_GPL(snd_hdac_get_connections); |
| 562 | |
| 563 | #ifdef CONFIG_PM |
| 564 | /** |
Takashi Iwai | 664c715 | 2015-04-08 11:43:14 +0200 | [diff] [blame] | 565 | * snd_hdac_power_up - power up the codec |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 566 | * @codec: the codec object |
Takashi Iwai | 664c715 | 2015-04-08 11:43:14 +0200 | [diff] [blame] | 567 | * |
| 568 | * This function calls the runtime PM helper to power up the given codec. |
| 569 | * Unlike snd_hdac_power_up_pm(), you should call this only for the code |
| 570 | * path that isn't included in PM path. Otherwise it gets stuck. |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 571 | * |
| 572 | * Returns zero if successful, or a negative error code. |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 573 | */ |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 574 | int snd_hdac_power_up(struct hdac_device *codec) |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 575 | { |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 576 | return pm_runtime_get_sync(&codec->dev); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 577 | } |
| 578 | EXPORT_SYMBOL_GPL(snd_hdac_power_up); |
| 579 | |
| 580 | /** |
Takashi Iwai | 664c715 | 2015-04-08 11:43:14 +0200 | [diff] [blame] | 581 | * snd_hdac_power_down - power down the codec |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 582 | * @codec: the codec object |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 583 | * |
| 584 | * Returns zero if successful, or a negative error code. |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 585 | */ |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 586 | int snd_hdac_power_down(struct hdac_device *codec) |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 587 | { |
| 588 | struct device *dev = &codec->dev; |
| 589 | |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 590 | pm_runtime_mark_last_busy(dev); |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 591 | return pm_runtime_put_autosuspend(dev); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 592 | } |
| 593 | EXPORT_SYMBOL_GPL(snd_hdac_power_down); |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 594 | |
| 595 | /** |
| 596 | * snd_hdac_power_up_pm - power up the codec |
| 597 | * @codec: the codec object |
| 598 | * |
| 599 | * This function can be called in a recursive code path like init code |
| 600 | * which may be called by PM suspend/resume again. OTOH, if a power-up |
| 601 | * call must wake up the sleeper (e.g. in a kctl callback), use |
| 602 | * snd_hdac_power_up() instead. |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 603 | * |
| 604 | * Returns zero if successful, or a negative error code. |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 605 | */ |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 606 | int snd_hdac_power_up_pm(struct hdac_device *codec) |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 607 | { |
| 608 | if (!atomic_inc_not_zero(&codec->in_pm)) |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 609 | return snd_hdac_power_up(codec); |
| 610 | return 0; |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 611 | } |
| 612 | EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm); |
| 613 | |
Takashi Iwai | fc4f000 | 2016-03-04 11:34:18 +0100 | [diff] [blame] | 614 | /* like snd_hdac_power_up_pm(), but only increment the pm count when |
| 615 | * already powered up. Returns -1 if not powered up, 1 if incremented |
| 616 | * or 0 if unchanged. Only used in hdac_regmap.c |
| 617 | */ |
| 618 | int snd_hdac_keep_power_up(struct hdac_device *codec) |
| 619 | { |
| 620 | if (!atomic_inc_not_zero(&codec->in_pm)) { |
| 621 | int ret = pm_runtime_get_if_in_use(&codec->dev); |
| 622 | if (!ret) |
| 623 | return -1; |
| 624 | if (ret < 0) |
| 625 | return 0; |
| 626 | } |
| 627 | return 1; |
| 628 | } |
| 629 | |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 630 | /** |
| 631 | * snd_hdac_power_down_pm - power down the codec |
| 632 | * @codec: the codec object |
| 633 | * |
| 634 | * Like snd_hdac_power_up_pm(), this function is used in a recursive |
| 635 | * code path like init code which may be called by PM suspend/resume again. |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 636 | * |
| 637 | * Returns zero if successful, or a negative error code. |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 638 | */ |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 639 | int snd_hdac_power_down_pm(struct hdac_device *codec) |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 640 | { |
| 641 | if (atomic_dec_if_positive(&codec->in_pm) < 0) |
Takashi Iwai | fbce23a | 2015-07-17 16:27:33 +0200 | [diff] [blame] | 642 | return snd_hdac_power_down(codec); |
| 643 | return 0; |
Takashi Iwai | c3aeda6 | 2015-04-13 11:01:14 +0200 | [diff] [blame] | 644 | } |
| 645 | EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm); |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 646 | #endif |
| 647 | |
Takashi Iwai | 78dd5e2 | 2015-10-28 12:26:48 +0100 | [diff] [blame] | 648 | /** |
| 649 | * snd_hdac_link_power - Enable/disable the link power for a codec |
| 650 | * @codec: the codec object |
| 651 | * @bool: enable or disable the link power |
Mengdong Lin | a5e7e07 | 2015-04-29 17:43:20 +0800 | [diff] [blame] | 652 | */ |
| 653 | int snd_hdac_link_power(struct hdac_device *codec, bool enable) |
| 654 | { |
| 655 | if (!codec->link_power_control) |
| 656 | return 0; |
| 657 | |
| 658 | if (codec->bus->ops->link_power) |
| 659 | return codec->bus->ops->link_power(codec->bus, enable); |
| 660 | else |
| 661 | return -EINVAL; |
| 662 | } |
| 663 | EXPORT_SYMBOL_GPL(snd_hdac_link_power); |
| 664 | |
Takashi Iwai | 7639a06 | 2015-03-03 10:07:24 +0100 | [diff] [blame] | 665 | /* codec vendor labels */ |
| 666 | struct hda_vendor_id { |
| 667 | unsigned int id; |
| 668 | const char *name; |
| 669 | }; |
| 670 | |
| 671 | static struct hda_vendor_id hda_vendor_ids[] = { |
| 672 | { 0x1002, "ATI" }, |
| 673 | { 0x1013, "Cirrus Logic" }, |
| 674 | { 0x1057, "Motorola" }, |
| 675 | { 0x1095, "Silicon Image" }, |
| 676 | { 0x10de, "Nvidia" }, |
| 677 | { 0x10ec, "Realtek" }, |
| 678 | { 0x1102, "Creative" }, |
| 679 | { 0x1106, "VIA" }, |
| 680 | { 0x111d, "IDT" }, |
| 681 | { 0x11c1, "LSI" }, |
| 682 | { 0x11d4, "Analog Devices" }, |
| 683 | { 0x13f6, "C-Media" }, |
| 684 | { 0x14f1, "Conexant" }, |
| 685 | { 0x17e8, "Chrontel" }, |
| 686 | { 0x1854, "LG" }, |
| 687 | { 0x1aec, "Wolfson Microelectronics" }, |
| 688 | { 0x1af4, "QEMU" }, |
| 689 | { 0x434d, "C-Media" }, |
| 690 | { 0x8086, "Intel" }, |
| 691 | { 0x8384, "SigmaTel" }, |
| 692 | {} /* terminator */ |
| 693 | }; |
| 694 | |
| 695 | /* store the codec vendor name */ |
| 696 | static int get_codec_vendor_name(struct hdac_device *codec) |
| 697 | { |
| 698 | const struct hda_vendor_id *c; |
| 699 | u16 vendor_id = codec->vendor_id >> 16; |
| 700 | |
| 701 | for (c = hda_vendor_ids; c->id; c++) { |
| 702 | if (c->id == vendor_id) { |
| 703 | codec->vendor_name = kstrdup(c->name, GFP_KERNEL); |
| 704 | return codec->vendor_name ? 0 : -ENOMEM; |
| 705 | } |
| 706 | } |
| 707 | |
| 708 | codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id); |
| 709 | return codec->vendor_name ? 0 : -ENOMEM; |
| 710 | } |
Takashi Iwai | b7d023e | 2015-04-16 08:19:06 +0200 | [diff] [blame] | 711 | |
| 712 | /* |
| 713 | * stream formats |
| 714 | */ |
| 715 | struct hda_rate_tbl { |
| 716 | unsigned int hz; |
| 717 | unsigned int alsa_bits; |
| 718 | unsigned int hda_fmt; |
| 719 | }; |
| 720 | |
| 721 | /* rate = base * mult / div */ |
| 722 | #define HDA_RATE(base, mult, div) \ |
| 723 | (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \ |
| 724 | (((div) - 1) << AC_FMT_DIV_SHIFT)) |
| 725 | |
| 726 | static struct hda_rate_tbl rate_bits[] = { |
| 727 | /* rate in Hz, ALSA rate bitmask, HDA format value */ |
| 728 | |
| 729 | /* autodetected value used in snd_hda_query_supported_pcm */ |
| 730 | { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) }, |
| 731 | { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) }, |
| 732 | { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) }, |
| 733 | { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) }, |
| 734 | { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) }, |
| 735 | { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) }, |
| 736 | { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) }, |
| 737 | { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) }, |
| 738 | { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) }, |
| 739 | { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) }, |
| 740 | { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) }, |
| 741 | #define AC_PAR_PCM_RATE_BITS 11 |
| 742 | /* up to bits 10, 384kHZ isn't supported properly */ |
| 743 | |
| 744 | /* not autodetected value */ |
| 745 | { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) }, |
| 746 | |
| 747 | { 0 } /* terminator */ |
| 748 | }; |
| 749 | |
| 750 | /** |
| 751 | * snd_hdac_calc_stream_format - calculate the format bitset |
| 752 | * @rate: the sample rate |
| 753 | * @channels: the number of channels |
| 754 | * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) |
| 755 | * @maxbps: the max. bps |
| 756 | * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant) |
| 757 | * |
| 758 | * Calculate the format bitset from the given rate, channels and th PCM format. |
| 759 | * |
| 760 | * Return zero if invalid. |
| 761 | */ |
| 762 | unsigned int snd_hdac_calc_stream_format(unsigned int rate, |
| 763 | unsigned int channels, |
| 764 | unsigned int format, |
| 765 | unsigned int maxbps, |
| 766 | unsigned short spdif_ctls) |
| 767 | { |
| 768 | int i; |
| 769 | unsigned int val = 0; |
| 770 | |
| 771 | for (i = 0; rate_bits[i].hz; i++) |
| 772 | if (rate_bits[i].hz == rate) { |
| 773 | val = rate_bits[i].hda_fmt; |
| 774 | break; |
| 775 | } |
| 776 | if (!rate_bits[i].hz) |
| 777 | return 0; |
| 778 | |
| 779 | if (channels == 0 || channels > 8) |
| 780 | return 0; |
| 781 | val |= channels - 1; |
| 782 | |
| 783 | switch (snd_pcm_format_width(format)) { |
| 784 | case 8: |
| 785 | val |= AC_FMT_BITS_8; |
| 786 | break; |
| 787 | case 16: |
| 788 | val |= AC_FMT_BITS_16; |
| 789 | break; |
| 790 | case 20: |
| 791 | case 24: |
| 792 | case 32: |
| 793 | if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE) |
| 794 | val |= AC_FMT_BITS_32; |
| 795 | else if (maxbps >= 24) |
| 796 | val |= AC_FMT_BITS_24; |
| 797 | else |
| 798 | val |= AC_FMT_BITS_20; |
| 799 | break; |
| 800 | default: |
| 801 | return 0; |
| 802 | } |
| 803 | |
| 804 | if (spdif_ctls & AC_DIG1_NONAUDIO) |
| 805 | val |= AC_FMT_TYPE_NON_PCM; |
| 806 | |
| 807 | return val; |
| 808 | } |
| 809 | EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format); |
| 810 | |
| 811 | static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid) |
| 812 | { |
| 813 | unsigned int val = 0; |
| 814 | |
| 815 | if (nid != codec->afg && |
| 816 | (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD)) |
| 817 | val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM); |
| 818 | if (!val || val == -1) |
| 819 | val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM); |
| 820 | if (!val || val == -1) |
| 821 | return 0; |
| 822 | return val; |
| 823 | } |
| 824 | |
| 825 | static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid) |
| 826 | { |
| 827 | unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM); |
| 828 | |
| 829 | if (!streams || streams == -1) |
| 830 | streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM); |
| 831 | if (!streams || streams == -1) |
| 832 | return 0; |
| 833 | return streams; |
| 834 | } |
| 835 | |
| 836 | /** |
| 837 | * snd_hdac_query_supported_pcm - query the supported PCM rates and formats |
| 838 | * @codec: the codec object |
| 839 | * @nid: NID to query |
| 840 | * @ratesp: the pointer to store the detected rate bitflags |
| 841 | * @formatsp: the pointer to store the detected formats |
| 842 | * @bpsp: the pointer to store the detected format widths |
| 843 | * |
| 844 | * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp |
| 845 | * or @bsps argument is ignored. |
| 846 | * |
| 847 | * Returns 0 if successful, otherwise a negative error code. |
| 848 | */ |
| 849 | int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, |
| 850 | u32 *ratesp, u64 *formatsp, unsigned int *bpsp) |
| 851 | { |
| 852 | unsigned int i, val, wcaps; |
| 853 | |
| 854 | wcaps = get_wcaps(codec, nid); |
| 855 | val = query_pcm_param(codec, nid); |
| 856 | |
| 857 | if (ratesp) { |
| 858 | u32 rates = 0; |
| 859 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) { |
| 860 | if (val & (1 << i)) |
| 861 | rates |= rate_bits[i].alsa_bits; |
| 862 | } |
| 863 | if (rates == 0) { |
| 864 | dev_err(&codec->dev, |
| 865 | "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n", |
| 866 | nid, val, |
| 867 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0); |
| 868 | return -EIO; |
| 869 | } |
| 870 | *ratesp = rates; |
| 871 | } |
| 872 | |
| 873 | if (formatsp || bpsp) { |
| 874 | u64 formats = 0; |
| 875 | unsigned int streams, bps; |
| 876 | |
| 877 | streams = query_stream_param(codec, nid); |
| 878 | if (!streams) |
| 879 | return -EIO; |
| 880 | |
| 881 | bps = 0; |
| 882 | if (streams & AC_SUPFMT_PCM) { |
| 883 | if (val & AC_SUPPCM_BITS_8) { |
| 884 | formats |= SNDRV_PCM_FMTBIT_U8; |
| 885 | bps = 8; |
| 886 | } |
| 887 | if (val & AC_SUPPCM_BITS_16) { |
| 888 | formats |= SNDRV_PCM_FMTBIT_S16_LE; |
| 889 | bps = 16; |
| 890 | } |
| 891 | if (wcaps & AC_WCAP_DIGITAL) { |
| 892 | if (val & AC_SUPPCM_BITS_32) |
| 893 | formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE; |
| 894 | if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24)) |
| 895 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
| 896 | if (val & AC_SUPPCM_BITS_24) |
| 897 | bps = 24; |
| 898 | else if (val & AC_SUPPCM_BITS_20) |
| 899 | bps = 20; |
| 900 | } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24| |
| 901 | AC_SUPPCM_BITS_32)) { |
| 902 | formats |= SNDRV_PCM_FMTBIT_S32_LE; |
| 903 | if (val & AC_SUPPCM_BITS_32) |
| 904 | bps = 32; |
| 905 | else if (val & AC_SUPPCM_BITS_24) |
| 906 | bps = 24; |
| 907 | else if (val & AC_SUPPCM_BITS_20) |
| 908 | bps = 20; |
| 909 | } |
| 910 | } |
| 911 | #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */ |
| 912 | if (streams & AC_SUPFMT_FLOAT32) { |
| 913 | formats |= SNDRV_PCM_FMTBIT_FLOAT_LE; |
| 914 | if (!bps) |
| 915 | bps = 32; |
| 916 | } |
| 917 | #endif |
| 918 | if (streams == AC_SUPFMT_AC3) { |
| 919 | /* should be exclusive */ |
| 920 | /* temporary hack: we have still no proper support |
| 921 | * for the direct AC3 stream... |
| 922 | */ |
| 923 | formats |= SNDRV_PCM_FMTBIT_U8; |
| 924 | bps = 8; |
| 925 | } |
| 926 | if (formats == 0) { |
| 927 | dev_err(&codec->dev, |
| 928 | "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n", |
| 929 | nid, val, |
| 930 | (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0, |
| 931 | streams); |
| 932 | return -EIO; |
| 933 | } |
| 934 | if (formatsp) |
| 935 | *formatsp = formats; |
| 936 | if (bpsp) |
| 937 | *bpsp = bps; |
| 938 | } |
| 939 | |
| 940 | return 0; |
| 941 | } |
| 942 | EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm); |
| 943 | |
| 944 | /** |
| 945 | * snd_hdac_is_supported_format - Check the validity of the format |
| 946 | * @codec: the codec object |
| 947 | * @nid: NID to check |
| 948 | * @format: the HD-audio format value to check |
| 949 | * |
| 950 | * Check whether the given node supports the format value. |
| 951 | * |
| 952 | * Returns true if supported, false if not. |
| 953 | */ |
| 954 | bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, |
| 955 | unsigned int format) |
| 956 | { |
| 957 | int i; |
| 958 | unsigned int val = 0, rate, stream; |
| 959 | |
| 960 | val = query_pcm_param(codec, nid); |
| 961 | if (!val) |
| 962 | return false; |
| 963 | |
| 964 | rate = format & 0xff00; |
| 965 | for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) |
| 966 | if (rate_bits[i].hda_fmt == rate) { |
| 967 | if (val & (1 << i)) |
| 968 | break; |
| 969 | return false; |
| 970 | } |
| 971 | if (i >= AC_PAR_PCM_RATE_BITS) |
| 972 | return false; |
| 973 | |
| 974 | stream = query_stream_param(codec, nid); |
| 975 | if (!stream) |
| 976 | return false; |
| 977 | |
| 978 | if (stream & AC_SUPFMT_PCM) { |
| 979 | switch (format & 0xf0) { |
| 980 | case 0x00: |
| 981 | if (!(val & AC_SUPPCM_BITS_8)) |
| 982 | return false; |
| 983 | break; |
| 984 | case 0x10: |
| 985 | if (!(val & AC_SUPPCM_BITS_16)) |
| 986 | return false; |
| 987 | break; |
| 988 | case 0x20: |
| 989 | if (!(val & AC_SUPPCM_BITS_20)) |
| 990 | return false; |
| 991 | break; |
| 992 | case 0x30: |
| 993 | if (!(val & AC_SUPPCM_BITS_24)) |
| 994 | return false; |
| 995 | break; |
| 996 | case 0x40: |
| 997 | if (!(val & AC_SUPPCM_BITS_32)) |
| 998 | return false; |
| 999 | break; |
| 1000 | default: |
| 1001 | return false; |
| 1002 | } |
| 1003 | } else { |
| 1004 | /* FIXME: check for float32 and AC3? */ |
| 1005 | } |
| 1006 | |
| 1007 | return true; |
| 1008 | } |
| 1009 | EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format); |
Subhransu S. Prusty | 1b5e616 | 2015-10-08 09:48:05 +0100 | [diff] [blame] | 1010 | |
| 1011 | static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid, |
| 1012 | int flags, unsigned int verb, unsigned int parm) |
| 1013 | { |
| 1014 | unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); |
| 1015 | unsigned int res; |
| 1016 | |
| 1017 | if (snd_hdac_exec_verb(hdac, cmd, flags, &res)) |
| 1018 | return -1; |
| 1019 | |
| 1020 | return res; |
| 1021 | } |
| 1022 | |
| 1023 | static int codec_write(struct hdac_device *hdac, hda_nid_t nid, |
| 1024 | int flags, unsigned int verb, unsigned int parm) |
| 1025 | { |
| 1026 | unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm); |
| 1027 | |
| 1028 | return snd_hdac_exec_verb(hdac, cmd, flags, NULL); |
| 1029 | } |
| 1030 | |
| 1031 | /** |
| 1032 | * snd_hdac_codec_read - send a command and get the response |
| 1033 | * @hdac: the HDAC device |
| 1034 | * @nid: NID to send the command |
| 1035 | * @flags: optional bit flags |
| 1036 | * @verb: the verb to send |
| 1037 | * @parm: the parameter for the verb |
| 1038 | * |
| 1039 | * Send a single command and read the corresponding response. |
| 1040 | * |
| 1041 | * Returns the obtained response value, or -1 for an error. |
| 1042 | */ |
| 1043 | int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, |
| 1044 | int flags, unsigned int verb, unsigned int parm) |
| 1045 | { |
| 1046 | return codec_read(hdac, nid, flags, verb, parm); |
| 1047 | } |
| 1048 | EXPORT_SYMBOL_GPL(snd_hdac_codec_read); |
| 1049 | |
| 1050 | /** |
| 1051 | * snd_hdac_codec_write - send a single command without waiting for response |
| 1052 | * @hdac: the HDAC device |
| 1053 | * @nid: NID to send the command |
| 1054 | * @flags: optional bit flags |
| 1055 | * @verb: the verb to send |
| 1056 | * @parm: the parameter for the verb |
| 1057 | * |
| 1058 | * Send a single command without waiting for response. |
| 1059 | * |
| 1060 | * Returns 0 if successful, or a negative error code. |
| 1061 | */ |
| 1062 | int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, |
| 1063 | int flags, unsigned int verb, unsigned int parm) |
| 1064 | { |
| 1065 | return codec_write(hdac, nid, flags, verb, parm); |
| 1066 | } |
| 1067 | EXPORT_SYMBOL_GPL(snd_hdac_codec_write); |
| 1068 | |
Takashi Iwai | 78dd5e2 | 2015-10-28 12:26:48 +0100 | [diff] [blame] | 1069 | /** |
| 1070 | * snd_hdac_check_power_state - check whether the actual power state matches |
Subhransu S. Prusty | 1b5e616 | 2015-10-08 09:48:05 +0100 | [diff] [blame] | 1071 | * with the target state |
| 1072 | * |
| 1073 | * @hdac: the HDAC device |
| 1074 | * @nid: NID to send the command |
| 1075 | * @target_state: target state to check for |
| 1076 | * |
| 1077 | * Return true if state matches, false if not |
| 1078 | */ |
| 1079 | bool snd_hdac_check_power_state(struct hdac_device *hdac, |
| 1080 | hda_nid_t nid, unsigned int target_state) |
| 1081 | { |
| 1082 | unsigned int state = codec_read(hdac, nid, 0, |
| 1083 | AC_VERB_GET_POWER_STATE, 0); |
| 1084 | |
| 1085 | if (state & AC_PWRST_ERROR) |
| 1086 | return true; |
| 1087 | state = (state >> 4) & 0x0f; |
| 1088 | return (state == target_state); |
| 1089 | } |
| 1090 | EXPORT_SYMBOL_GPL(snd_hdac_check_power_state); |