1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2022 Intel Corporation. All rights reserved. 7 // 8 // 9 10 #include "sof-priv.h" 11 #include "sof-audio.h" 12 #include "ipc4-priv.h" 13 #include "ipc4-topology.h" 14 15 static int sof_ipc4_set_get_kcontrol_data(struct snd_sof_control *scontrol, 16 bool set, bool lock) 17 { 18 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 19 struct snd_soc_component *scomp = scontrol->scomp; 20 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); 21 const struct sof_ipc_ops *iops = sdev->ipc->ops; 22 struct sof_ipc4_msg *msg = &cdata->msg; 23 struct snd_sof_widget *swidget; 24 bool widget_found = false; 25 int ret = 0; 26 27 /* find widget associated with the control */ 28 list_for_each_entry(swidget, &sdev->widget_list, list) { 29 if (swidget->comp_id == scontrol->comp_id) { 30 widget_found = true; 31 break; 32 } 33 } 34 35 if (!widget_found) { 36 dev_err(scomp->dev, "Failed to find widget for kcontrol %s\n", scontrol->name); 37 return -ENOENT; 38 } 39 40 if (lock) 41 mutex_lock(&swidget->setup_mutex); 42 else 43 lockdep_assert_held(&swidget->setup_mutex); 44 45 /* 46 * Volatile controls should always be part of static pipelines and the 47 * widget use_count would always be > 0 in this case. For the others, 48 * just return the cached value if the widget is not set up. 49 */ 50 if (!swidget->use_count) 51 goto unlock; 52 53 msg->primary &= ~SOF_IPC4_MOD_INSTANCE_MASK; 54 msg->primary |= SOF_IPC4_MOD_INSTANCE(swidget->instance_id); 55 56 ret = iops->set_get_data(sdev, msg, msg->data_size, set); 57 if (!set) 58 goto unlock; 59 60 /* It is a set-data operation, and we have a valid backup that we can restore */ 61 if (ret < 0) { 62 if (!scontrol->old_ipc_control_data) 63 goto unlock; 64 /* 65 * Current ipc_control_data is not valid, we use the last known good 66 * configuration 67 */ 68 memcpy(scontrol->ipc_control_data, scontrol->old_ipc_control_data, 69 scontrol->max_size); 70 kfree(scontrol->old_ipc_control_data); 71 scontrol->old_ipc_control_data = NULL; 72 /* Send the last known good configuration to firmware */ 73 ret = iops->set_get_data(sdev, msg, msg->data_size, set); 74 if (ret < 0) 75 goto unlock; 76 } 77 78 unlock: 79 if (lock) 80 mutex_unlock(&swidget->setup_mutex); 81 82 return ret; 83 } 84 85 static int 86 sof_ipc4_set_volume_data(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget, 87 struct snd_sof_control *scontrol, bool lock) 88 { 89 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 90 struct sof_ipc4_gain *gain = swidget->private; 91 struct sof_ipc4_msg *msg = &cdata->msg; 92 struct sof_ipc4_gain_data data; 93 bool all_channels_equal = true; 94 u32 value; 95 int ret, i; 96 97 /* check if all channel values are equal */ 98 value = cdata->chanv[0].value; 99 for (i = 1; i < scontrol->num_channels; i++) { 100 if (cdata->chanv[i].value != value) { 101 all_channels_equal = false; 102 break; 103 } 104 } 105 106 /* 107 * notify DSP with a single IPC message if all channel values are equal. Otherwise send 108 * a separate IPC for each channel. 109 */ 110 for (i = 0; i < scontrol->num_channels; i++) { 111 if (all_channels_equal) { 112 data.channels = SOF_IPC4_GAIN_ALL_CHANNELS_MASK; 113 data.init_val = cdata->chanv[0].value; 114 } else { 115 data.channels = cdata->chanv[i].channel; 116 data.init_val = cdata->chanv[i].value; 117 } 118 119 /* set curve type and duration from topology */ 120 data.curve_duration_l = gain->data.curve_duration_l; 121 data.curve_duration_h = gain->data.curve_duration_h; 122 data.curve_type = gain->data.curve_type; 123 124 msg->data_ptr = &data; 125 msg->data_size = sizeof(data); 126 127 ret = sof_ipc4_set_get_kcontrol_data(scontrol, true, lock); 128 msg->data_ptr = NULL; 129 msg->data_size = 0; 130 if (ret < 0) { 131 dev_err(sdev->dev, "Failed to set volume update for %s\n", 132 scontrol->name); 133 return ret; 134 } 135 136 if (all_channels_equal) 137 break; 138 } 139 140 return 0; 141 } 142 143 static bool sof_ipc4_volume_put(struct snd_sof_control *scontrol, 144 struct snd_ctl_elem_value *ucontrol) 145 { 146 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 147 struct snd_soc_component *scomp = scontrol->scomp; 148 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); 149 unsigned int channels = scontrol->num_channels; 150 struct snd_sof_widget *swidget; 151 bool widget_found = false; 152 bool change = false; 153 unsigned int i; 154 int ret; 155 156 /* update each channel */ 157 for (i = 0; i < channels; i++) { 158 u32 value = mixer_to_ipc(ucontrol->value.integer.value[i], 159 scontrol->volume_table, scontrol->max + 1); 160 161 change = change || (value != cdata->chanv[i].value); 162 cdata->chanv[i].channel = i; 163 cdata->chanv[i].value = value; 164 } 165 166 if (!pm_runtime_active(scomp->dev)) 167 return change; 168 169 /* find widget associated with the control */ 170 list_for_each_entry(swidget, &sdev->widget_list, list) { 171 if (swidget->comp_id == scontrol->comp_id) { 172 widget_found = true; 173 break; 174 } 175 } 176 177 if (!widget_found) { 178 dev_err(scomp->dev, "Failed to find widget for kcontrol %s\n", scontrol->name); 179 return false; 180 } 181 182 ret = sof_ipc4_set_volume_data(sdev, swidget, scontrol, true); 183 if (ret < 0) 184 return false; 185 186 return change; 187 } 188 189 static int sof_ipc4_volume_get(struct snd_sof_control *scontrol, 190 struct snd_ctl_elem_value *ucontrol) 191 { 192 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 193 unsigned int channels = scontrol->num_channels; 194 unsigned int i; 195 196 for (i = 0; i < channels; i++) 197 ucontrol->value.integer.value[i] = ipc_to_mixer(cdata->chanv[i].value, 198 scontrol->volume_table, 199 scontrol->max + 1); 200 201 return 0; 202 } 203 204 static int sof_ipc4_set_get_bytes_data(struct snd_sof_dev *sdev, 205 struct snd_sof_control *scontrol, 206 bool set, bool lock) 207 { 208 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 209 struct sof_abi_hdr *data = cdata->data; 210 struct sof_ipc4_msg *msg = &cdata->msg; 211 int ret = 0; 212 213 /* Send the new data to the firmware only if it is powered up */ 214 if (set && !pm_runtime_active(sdev->dev)) 215 return 0; 216 217 msg->extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(data->type); 218 219 msg->data_ptr = data->data; 220 msg->data_size = data->size; 221 222 ret = sof_ipc4_set_get_kcontrol_data(scontrol, set, lock); 223 if (ret < 0) 224 dev_err(sdev->dev, "Failed to %s for %s\n", 225 set ? "set bytes update" : "get bytes", 226 scontrol->name); 227 228 msg->data_ptr = NULL; 229 msg->data_size = 0; 230 231 return ret; 232 } 233 234 static int sof_ipc4_bytes_put(struct snd_sof_control *scontrol, 235 struct snd_ctl_elem_value *ucontrol) 236 { 237 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 238 struct snd_soc_component *scomp = scontrol->scomp; 239 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); 240 struct sof_abi_hdr *data = cdata->data; 241 size_t size; 242 243 if (scontrol->max_size > sizeof(ucontrol->value.bytes.data)) { 244 dev_err_ratelimited(scomp->dev, 245 "data max %zu exceeds ucontrol data array size\n", 246 scontrol->max_size); 247 return -EINVAL; 248 } 249 250 /* scontrol->max_size has been verified to be >= sizeof(struct sof_abi_hdr) */ 251 if (data->size > scontrol->max_size - sizeof(*data)) { 252 dev_err_ratelimited(scomp->dev, 253 "data size too big %u bytes max is %zu\n", 254 data->size, scontrol->max_size - sizeof(*data)); 255 return -EINVAL; 256 } 257 258 size = data->size + sizeof(*data); 259 260 /* copy from kcontrol */ 261 memcpy(data, ucontrol->value.bytes.data, size); 262 263 sof_ipc4_set_get_bytes_data(sdev, scontrol, true, true); 264 265 return 0; 266 } 267 268 static int sof_ipc4_bytes_get(struct snd_sof_control *scontrol, 269 struct snd_ctl_elem_value *ucontrol) 270 { 271 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 272 struct snd_soc_component *scomp = scontrol->scomp; 273 struct sof_abi_hdr *data = cdata->data; 274 size_t size; 275 276 if (scontrol->max_size > sizeof(ucontrol->value.bytes.data)) { 277 dev_err_ratelimited(scomp->dev, "data max %zu exceeds ucontrol data array size\n", 278 scontrol->max_size); 279 return -EINVAL; 280 } 281 282 if (data->size > scontrol->max_size - sizeof(*data)) { 283 dev_err_ratelimited(scomp->dev, 284 "%u bytes of control data is invalid, max is %zu\n", 285 data->size, scontrol->max_size - sizeof(*data)); 286 return -EINVAL; 287 } 288 289 size = data->size + sizeof(*data); 290 291 /* copy back to kcontrol */ 292 memcpy(ucontrol->value.bytes.data, data, size); 293 294 return 0; 295 } 296 297 static int sof_ipc4_bytes_ext_put(struct snd_sof_control *scontrol, 298 const unsigned int __user *binary_data, 299 unsigned int size) 300 { 301 struct snd_ctl_tlv __user *tlvd = (struct snd_ctl_tlv __user *)binary_data; 302 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 303 struct snd_soc_component *scomp = scontrol->scomp; 304 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); 305 struct sof_abi_hdr *data = cdata->data; 306 struct sof_abi_hdr abi_hdr; 307 struct snd_ctl_tlv header; 308 309 /* 310 * The beginning of bytes data contains a header from where 311 * the length (as bytes) is needed to know the correct copy 312 * length of data from tlvd->tlv. 313 */ 314 if (copy_from_user(&header, tlvd, sizeof(struct snd_ctl_tlv))) 315 return -EFAULT; 316 317 /* make sure TLV info is consistent */ 318 if (header.length + sizeof(struct snd_ctl_tlv) > size) { 319 dev_err_ratelimited(scomp->dev, 320 "Inconsistent TLV, data %d + header %zu > %d\n", 321 header.length, sizeof(struct snd_ctl_tlv), size); 322 return -EINVAL; 323 } 324 325 /* be->max is coming from topology */ 326 if (header.length > scontrol->max_size) { 327 dev_err_ratelimited(scomp->dev, 328 "Bytes data size %d exceeds max %zu\n", 329 header.length, scontrol->max_size); 330 return -EINVAL; 331 } 332 333 /* Verify the ABI header first */ 334 if (copy_from_user(&abi_hdr, tlvd->tlv, sizeof(abi_hdr))) 335 return -EFAULT; 336 337 if (abi_hdr.magic != SOF_IPC4_ABI_MAGIC) { 338 dev_err_ratelimited(scomp->dev, "Wrong ABI magic 0x%08x\n", 339 abi_hdr.magic); 340 return -EINVAL; 341 } 342 343 if (abi_hdr.size > scontrol->max_size - sizeof(abi_hdr)) { 344 dev_err_ratelimited(scomp->dev, 345 "%u bytes of control data is invalid, max is %zu\n", 346 abi_hdr.size, scontrol->max_size - sizeof(abi_hdr)); 347 return -EINVAL; 348 } 349 350 if (!scontrol->old_ipc_control_data) { 351 /* Create a backup of the current, valid bytes control */ 352 scontrol->old_ipc_control_data = kmemdup(scontrol->ipc_control_data, 353 scontrol->max_size, GFP_KERNEL); 354 if (!scontrol->old_ipc_control_data) 355 return -ENOMEM; 356 } 357 358 /* Copy the whole binary data which includes the ABI header and the payload */ 359 if (copy_from_user(data, tlvd->tlv, header.length)) { 360 memcpy(scontrol->ipc_control_data, scontrol->old_ipc_control_data, 361 scontrol->max_size); 362 kfree(scontrol->old_ipc_control_data); 363 scontrol->old_ipc_control_data = NULL; 364 return -EFAULT; 365 } 366 367 return sof_ipc4_set_get_bytes_data(sdev, scontrol, true, true); 368 } 369 370 static int _sof_ipc4_bytes_ext_get(struct snd_sof_control *scontrol, 371 const unsigned int __user *binary_data, 372 unsigned int size, bool from_dsp) 373 { 374 struct snd_ctl_tlv __user *tlvd = (struct snd_ctl_tlv __user *)binary_data; 375 struct sof_ipc4_control_data *cdata = scontrol->ipc_control_data; 376 struct snd_soc_component *scomp = scontrol->scomp; 377 struct sof_abi_hdr *data = cdata->data; 378 struct snd_ctl_tlv header; 379 size_t data_size; 380 381 /* 382 * Decrement the limit by ext bytes header size to ensure the user space 383 * buffer is not exceeded. 384 */ 385 if (size < sizeof(struct snd_ctl_tlv)) 386 return -ENOSPC; 387 388 size -= sizeof(struct snd_ctl_tlv); 389 390 /* get all the component data from DSP */ 391 if (from_dsp) { 392 struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); 393 int ret = sof_ipc4_set_get_bytes_data(sdev, scontrol, false, true); 394 395 if (ret < 0) 396 return ret; 397 398 /* Set the ABI magic (if the control is not initialized) */ 399 data->magic = SOF_IPC4_ABI_MAGIC; 400 } 401 402 if (data->size > scontrol->max_size - sizeof(*data)) { 403 dev_err_ratelimited(scomp->dev, 404 "%u bytes of control data is invalid, max is %zu\n", 405 data->size, scontrol->max_size - sizeof(*data)); 406 return -EINVAL; 407 } 408 409 data_size = data->size + sizeof(struct sof_abi_hdr); 410 411 /* make sure we don't exceed size provided by user space for data */ 412 if (data_size > size) 413 return -ENOSPC; 414 415 header.numid = scontrol->comp_id; 416 header.length = data_size; 417 418 if (copy_to_user(tlvd, &header, sizeof(struct snd_ctl_tlv))) 419 return -EFAULT; 420 421 if (copy_to_user(tlvd->tlv, data, data_size)) 422 return -EFAULT; 423 424 return 0; 425 } 426 427 static int sof_ipc4_bytes_ext_get(struct snd_sof_control *scontrol, 428 const unsigned int __user *binary_data, 429 unsigned int size) 430 { 431 return _sof_ipc4_bytes_ext_get(scontrol, binary_data, size, false); 432 } 433 434 static int sof_ipc4_bytes_ext_volatile_get(struct snd_sof_control *scontrol, 435 const unsigned int __user *binary_data, 436 unsigned int size) 437 { 438 return _sof_ipc4_bytes_ext_get(scontrol, binary_data, size, true); 439 } 440 441 /* set up all controls for the widget */ 442 static int sof_ipc4_widget_kcontrol_setup(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget) 443 { 444 struct snd_sof_control *scontrol; 445 int ret = 0; 446 447 list_for_each_entry(scontrol, &sdev->kcontrol_list, list) { 448 if (scontrol->comp_id == swidget->comp_id) { 449 switch (scontrol->info_type) { 450 case SND_SOC_TPLG_CTL_VOLSW: 451 case SND_SOC_TPLG_CTL_VOLSW_SX: 452 case SND_SOC_TPLG_CTL_VOLSW_XR_SX: 453 ret = sof_ipc4_set_volume_data(sdev, swidget, 454 scontrol, false); 455 break; 456 case SND_SOC_TPLG_CTL_BYTES: 457 ret = sof_ipc4_set_get_bytes_data(sdev, scontrol, 458 true, false); 459 break; 460 default: 461 break; 462 } 463 464 if (ret < 0) { 465 dev_err(sdev->dev, 466 "kcontrol %d set up failed for widget %s\n", 467 scontrol->comp_id, swidget->widget->name); 468 return ret; 469 } 470 } 471 } 472 473 return 0; 474 } 475 476 static int 477 sof_ipc4_set_up_volume_table(struct snd_sof_control *scontrol, int tlv[SOF_TLV_ITEMS], int size) 478 { 479 int i; 480 481 /* init the volume table */ 482 scontrol->volume_table = kcalloc(size, sizeof(u32), GFP_KERNEL); 483 if (!scontrol->volume_table) 484 return -ENOMEM; 485 486 /* populate the volume table */ 487 for (i = 0; i < size ; i++) { 488 u32 val = vol_compute_gain(i, tlv); 489 u64 q31val = ((u64)val) << 15; /* Can be over Q1.31, need to saturate */ 490 491 scontrol->volume_table[i] = q31val > SOF_IPC4_VOL_ZERO_DB ? 492 SOF_IPC4_VOL_ZERO_DB : q31val; 493 } 494 495 return 0; 496 } 497 498 const struct sof_ipc_tplg_control_ops tplg_ipc4_control_ops = { 499 .volume_put = sof_ipc4_volume_put, 500 .volume_get = sof_ipc4_volume_get, 501 .bytes_put = sof_ipc4_bytes_put, 502 .bytes_get = sof_ipc4_bytes_get, 503 .bytes_ext_put = sof_ipc4_bytes_ext_put, 504 .bytes_ext_get = sof_ipc4_bytes_ext_get, 505 .bytes_ext_volatile_get = sof_ipc4_bytes_ext_volatile_get, 506 .widget_kcontrol_setup = sof_ipc4_widget_kcontrol_setup, 507 .set_up_volume_table = sof_ipc4_set_up_volume_table, 508 }; 509