1/* 2 * Intel Baytrail SST IPC Support 3 * Copyright (c) 2014, Intel Corporation. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 */ 14 15#include <linux/types.h> 16#include <linux/kernel.h> 17#include <linux/list.h> 18#include <linux/device.h> 19#include <linux/wait.h> 20#include <linux/spinlock.h> 21#include <linux/workqueue.h> 22#include <linux/export.h> 23#include <linux/slab.h> 24#include <linux/delay.h> 25#include <linux/platform_device.h> 26#include <linux/kthread.h> 27#include <linux/firmware.h> 28#include <linux/io.h> 29#include <asm/div64.h> 30 31#include "sst-baytrail-ipc.h" 32#include "../common/sst-dsp.h" 33#include "../common/sst-dsp-priv.h" 34#include "../common/sst-ipc.h" 35 36/* IPC message timeout */ 37#define IPC_TIMEOUT_MSECS 300 38#define IPC_BOOT_MSECS 200 39 40#define IPC_EMPTY_LIST_SIZE 8 41 42/* IPC header bits */ 43#define IPC_HEADER_MSG_ID_MASK 0xff 44#define IPC_HEADER_MSG_ID(x) ((x) & IPC_HEADER_MSG_ID_MASK) 45#define IPC_HEADER_STR_ID_SHIFT 8 46#define IPC_HEADER_STR_ID_MASK 0x1f 47#define IPC_HEADER_STR_ID(x) (((x) & 0x1f) << IPC_HEADER_STR_ID_SHIFT) 48#define IPC_HEADER_LARGE_SHIFT 13 49#define IPC_HEADER_LARGE(x) (((x) & 0x1) << IPC_HEADER_LARGE_SHIFT) 50#define IPC_HEADER_DATA_SHIFT 16 51#define IPC_HEADER_DATA_MASK 0x3fff 52#define IPC_HEADER_DATA(x) (((x) & 0x3fff) << IPC_HEADER_DATA_SHIFT) 53 54/* mask for differentiating between notification and reply message */ 55#define IPC_NOTIFICATION (0x1 << 7) 56 57/* I2L Stream config/control msgs */ 58#define IPC_IA_ALLOC_STREAM 0x20 59#define IPC_IA_FREE_STREAM 0x21 60#define IPC_IA_PAUSE_STREAM 0x24 61#define IPC_IA_RESUME_STREAM 0x25 62#define IPC_IA_DROP_STREAM 0x26 63#define IPC_IA_START_STREAM 0x30 64 65/* notification messages */ 66#define IPC_IA_FW_INIT_CMPLT 0x81 67#define IPC_SST_PERIOD_ELAPSED 0x97 68 69/* IPC messages between host and ADSP */ 70struct sst_byt_address_info { 71 u32 addr; 72 u32 size; 73} __packed; 74 75struct sst_byt_str_type { 76 u8 codec_type; 77 u8 str_type; 78 u8 operation; 79 u8 protected_str; 80 u8 time_slots; 81 u8 reserved; 82 u16 result; 83} __packed; 84 85struct sst_byt_pcm_params { 86 u8 num_chan; 87 u8 pcm_wd_sz; 88 u8 use_offload_path; 89 u8 reserved; 90 u32 sfreq; 91 u8 channel_map[8]; 92} __packed; 93 94struct sst_byt_frames_info { 95 u16 num_entries; 96 u16 rsrvd; 97 u32 frag_size; 98 struct sst_byt_address_info ring_buf_info[8]; 99} __packed; 100 101struct sst_byt_alloc_params { 102 struct sst_byt_str_type str_type; 103 struct sst_byt_pcm_params pcm_params; 104 struct sst_byt_frames_info frame_info; 105} __packed; 106 107struct sst_byt_alloc_response { 108 struct sst_byt_str_type str_type; 109 u8 reserved[88]; 110} __packed; 111 112struct sst_byt_start_stream_params { 113 u32 byte_offset; 114} __packed; 115 116struct sst_byt_tstamp { 117 u64 ring_buffer_counter; 118 u64 hardware_counter; 119 u64 frames_decoded; 120 u64 bytes_decoded; 121 u64 bytes_copied; 122 u32 sampling_frequency; 123 u32 channel_peak[8]; 124} __packed; 125 126struct sst_byt_fw_version { 127 u8 build; 128 u8 minor; 129 u8 major; 130 u8 type; 131} __packed; 132 133struct sst_byt_fw_build_info { 134 u8 date[16]; 135 u8 time[16]; 136} __packed; 137 138struct sst_byt_fw_init { 139 struct sst_byt_fw_version fw_version; 140 struct sst_byt_fw_build_info build_info; 141 u16 result; 142 u8 module_id; 143 u8 debug_info; 144} __packed; 145 146struct sst_byt_stream; 147struct sst_byt; 148 149/* stream infomation */ 150struct sst_byt_stream { 151 struct list_head node; 152 153 /* configuration */ 154 struct sst_byt_alloc_params request; 155 struct sst_byt_alloc_response reply; 156 157 /* runtime info */ 158 struct sst_byt *byt; 159 int str_id; 160 bool commited; 161 bool running; 162 163 /* driver callback */ 164 u32 (*notify_position)(struct sst_byt_stream *stream, void *data); 165 void *pdata; 166}; 167 168/* SST Baytrail IPC data */ 169struct sst_byt { 170 struct device *dev; 171 struct sst_dsp *dsp; 172 173 /* stream */ 174 struct list_head stream_list; 175 176 /* boot */ 177 wait_queue_head_t boot_wait; 178 bool boot_complete; 179 struct sst_fw *fw; 180 181 /* IPC messaging */ 182 struct sst_generic_ipc ipc; 183}; 184 185static inline u64 sst_byt_header(int msg_id, int data, bool large, int str_id) 186{ 187 u64 header; 188 189 header = IPC_HEADER_MSG_ID(msg_id) | 190 IPC_HEADER_STR_ID(str_id) | 191 IPC_HEADER_LARGE(large) | 192 IPC_HEADER_DATA(data) | 193 SST_BYT_IPCX_BUSY; 194 195 return header; 196} 197 198static inline u16 sst_byt_header_msg_id(u64 header) 199{ 200 return header & IPC_HEADER_MSG_ID_MASK; 201} 202 203static inline u8 sst_byt_header_str_id(u64 header) 204{ 205 return (header >> IPC_HEADER_STR_ID_SHIFT) & IPC_HEADER_STR_ID_MASK; 206} 207 208static inline u16 sst_byt_header_data(u64 header) 209{ 210 return (header >> IPC_HEADER_DATA_SHIFT) & IPC_HEADER_DATA_MASK; 211} 212 213static struct sst_byt_stream *sst_byt_get_stream(struct sst_byt *byt, 214 int stream_id) 215{ 216 struct sst_byt_stream *stream; 217 218 list_for_each_entry(stream, &byt->stream_list, node) { 219 if (stream->str_id == stream_id) 220 return stream; 221 } 222 223 return NULL; 224} 225 226static void sst_byt_stream_update(struct sst_byt *byt, struct ipc_message *msg) 227{ 228 struct sst_byt_stream *stream; 229 u64 header = msg->header; 230 u8 stream_id = sst_byt_header_str_id(header); 231 u8 stream_msg = sst_byt_header_msg_id(header); 232 233 stream = sst_byt_get_stream(byt, stream_id); 234 if (stream == NULL) 235 return; 236 237 switch (stream_msg) { 238 case IPC_IA_DROP_STREAM: 239 case IPC_IA_PAUSE_STREAM: 240 case IPC_IA_FREE_STREAM: 241 stream->running = false; 242 break; 243 case IPC_IA_START_STREAM: 244 case IPC_IA_RESUME_STREAM: 245 stream->running = true; 246 break; 247 } 248} 249 250static int sst_byt_process_reply(struct sst_byt *byt, u64 header) 251{ 252 struct ipc_message *msg; 253 254 msg = sst_ipc_reply_find_msg(&byt->ipc, header); 255 if (msg == NULL) 256 return 1; 257 258 if (header & IPC_HEADER_LARGE(true)) { 259 msg->rx_size = sst_byt_header_data(header); 260 sst_dsp_inbox_read(byt->dsp, msg->rx_data, msg->rx_size); 261 } 262 263 /* update any stream states */ 264 sst_byt_stream_update(byt, msg); 265 266 list_del(&msg->list); 267 /* wake up */ 268 sst_ipc_tx_msg_reply_complete(&byt->ipc, msg); 269 270 return 1; 271} 272 273static void sst_byt_fw_ready(struct sst_byt *byt, u64 header) 274{ 275 dev_dbg(byt->dev, "ipc: DSP is ready 0x%llX\n", header); 276 277 byt->boot_complete = true; 278 wake_up(&byt->boot_wait); 279} 280 281static int sst_byt_process_notification(struct sst_byt *byt, 282 unsigned long *flags) 283{ 284 struct sst_dsp *sst = byt->dsp; 285 struct sst_byt_stream *stream; 286 u64 header; 287 u8 msg_id, stream_id; 288 int handled = 1; 289 290 header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); 291 msg_id = sst_byt_header_msg_id(header); 292 293 switch (msg_id) { 294 case IPC_SST_PERIOD_ELAPSED: 295 stream_id = sst_byt_header_str_id(header); 296 stream = sst_byt_get_stream(byt, stream_id); 297 if (stream && stream->running && stream->notify_position) { 298 spin_unlock_irqrestore(&sst->spinlock, *flags); 299 stream->notify_position(stream, stream->pdata); 300 spin_lock_irqsave(&sst->spinlock, *flags); 301 } 302 break; 303 case IPC_IA_FW_INIT_CMPLT: 304 sst_byt_fw_ready(byt, header); 305 break; 306 } 307 308 return handled; 309} 310 311static irqreturn_t sst_byt_irq_thread(int irq, void *context) 312{ 313 struct sst_dsp *sst = (struct sst_dsp *) context; 314 struct sst_byt *byt = sst_dsp_get_thread_context(sst); 315 struct sst_generic_ipc *ipc = &byt->ipc; 316 u64 header; 317 unsigned long flags; 318 319 spin_lock_irqsave(&sst->spinlock, flags); 320 321 header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); 322 if (header & SST_BYT_IPCD_BUSY) { 323 if (header & IPC_NOTIFICATION) { 324 /* message from ADSP */ 325 sst_byt_process_notification(byt, &flags); 326 } else { 327 /* reply from ADSP */ 328 sst_byt_process_reply(byt, header); 329 } 330 /* 331 * clear IPCD BUSY bit and set DONE bit. Tell DSP we have 332 * processed the message and can accept new. Clear data part 333 * of the header 334 */ 335 sst_dsp_shim_update_bits64_unlocked(sst, SST_IPCD, 336 SST_BYT_IPCD_DONE | SST_BYT_IPCD_BUSY | 337 IPC_HEADER_DATA(IPC_HEADER_DATA_MASK), 338 SST_BYT_IPCD_DONE); 339 /* unmask message request interrupts */ 340 sst_dsp_shim_update_bits64_unlocked(sst, SST_IMRX, 341 SST_BYT_IMRX_REQUEST, 0); 342 } 343 344 spin_unlock_irqrestore(&sst->spinlock, flags); 345 346 /* continue to send any remaining messages... */ 347 queue_kthread_work(&ipc->kworker, &ipc->kwork); 348 349 return IRQ_HANDLED; 350} 351 352/* stream API */ 353struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id, 354 u32 (*notify_position)(struct sst_byt_stream *stream, void *data), 355 void *data) 356{ 357 struct sst_byt_stream *stream; 358 struct sst_dsp *sst = byt->dsp; 359 unsigned long flags; 360 361 stream = kzalloc(sizeof(*stream), GFP_KERNEL); 362 if (stream == NULL) 363 return NULL; 364 365 spin_lock_irqsave(&sst->spinlock, flags); 366 list_add(&stream->node, &byt->stream_list); 367 stream->notify_position = notify_position; 368 stream->pdata = data; 369 stream->byt = byt; 370 stream->str_id = id; 371 spin_unlock_irqrestore(&sst->spinlock, flags); 372 373 return stream; 374} 375 376int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream, 377 int bits) 378{ 379 stream->request.pcm_params.pcm_wd_sz = bits; 380 return 0; 381} 382 383int sst_byt_stream_set_channels(struct sst_byt *byt, 384 struct sst_byt_stream *stream, u8 channels) 385{ 386 stream->request.pcm_params.num_chan = channels; 387 return 0; 388} 389 390int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream, 391 unsigned int rate) 392{ 393 stream->request.pcm_params.sfreq = rate; 394 return 0; 395} 396 397/* stream sonfiguration */ 398int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream, 399 int codec_type, int stream_type, int operation) 400{ 401 stream->request.str_type.codec_type = codec_type; 402 stream->request.str_type.str_type = stream_type; 403 stream->request.str_type.operation = operation; 404 stream->request.str_type.time_slots = 0xc; 405 406 return 0; 407} 408 409int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream, 410 uint32_t buffer_addr, uint32_t buffer_size) 411{ 412 stream->request.frame_info.num_entries = 1; 413 stream->request.frame_info.ring_buf_info[0].addr = buffer_addr; 414 stream->request.frame_info.ring_buf_info[0].size = buffer_size; 415 /* calculate bytes per 4 ms fragment */ 416 stream->request.frame_info.frag_size = 417 stream->request.pcm_params.sfreq * 418 stream->request.pcm_params.num_chan * 419 stream->request.pcm_params.pcm_wd_sz / 8 * 420 4 / 1000; 421 return 0; 422} 423 424int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream) 425{ 426 struct sst_byt_alloc_params *str_req = &stream->request; 427 struct sst_byt_alloc_response *reply = &stream->reply; 428 u64 header; 429 int ret; 430 431 header = sst_byt_header(IPC_IA_ALLOC_STREAM, 432 sizeof(*str_req) + sizeof(u32), 433 true, stream->str_id); 434 ret = sst_ipc_tx_message_wait(&byt->ipc, header, str_req, 435 sizeof(*str_req), 436 reply, sizeof(*reply)); 437 if (ret < 0) { 438 dev_err(byt->dev, "ipc: error stream commit failed\n"); 439 return ret; 440 } 441 442 stream->commited = true; 443 444 return 0; 445} 446 447int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream) 448{ 449 u64 header; 450 int ret = 0; 451 struct sst_dsp *sst = byt->dsp; 452 unsigned long flags; 453 454 if (!stream->commited) 455 goto out; 456 457 header = sst_byt_header(IPC_IA_FREE_STREAM, 0, false, stream->str_id); 458 ret = sst_ipc_tx_message_wait(&byt->ipc, header, NULL, 0, NULL, 0); 459 if (ret < 0) { 460 dev_err(byt->dev, "ipc: free stream %d failed\n", 461 stream->str_id); 462 return -EAGAIN; 463 } 464 465 stream->commited = false; 466out: 467 spin_lock_irqsave(&sst->spinlock, flags); 468 list_del(&stream->node); 469 kfree(stream); 470 spin_unlock_irqrestore(&sst->spinlock, flags); 471 472 return ret; 473} 474 475static int sst_byt_stream_operations(struct sst_byt *byt, int type, 476 int stream_id, int wait) 477{ 478 u64 header; 479 480 header = sst_byt_header(type, 0, false, stream_id); 481 if (wait) 482 return sst_ipc_tx_message_wait(&byt->ipc, header, NULL, 483 0, NULL, 0); 484 else 485 return sst_ipc_tx_message_nowait(&byt->ipc, header, 486 NULL, 0); 487} 488 489/* stream ALSA trigger operations */ 490int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream, 491 u32 start_offset) 492{ 493 struct sst_byt_start_stream_params start_stream; 494 void *tx_msg; 495 size_t size; 496 u64 header; 497 int ret; 498 499 start_stream.byte_offset = start_offset; 500 header = sst_byt_header(IPC_IA_START_STREAM, 501 sizeof(start_stream) + sizeof(u32), 502 true, stream->str_id); 503 tx_msg = &start_stream; 504 size = sizeof(start_stream); 505 506 ret = sst_ipc_tx_message_nowait(&byt->ipc, header, tx_msg, size); 507 if (ret < 0) 508 dev_err(byt->dev, "ipc: error failed to start stream %d\n", 509 stream->str_id); 510 511 return ret; 512} 513 514int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream) 515{ 516 int ret; 517 518 /* don't stop streams that are not commited */ 519 if (!stream->commited) 520 return 0; 521 522 ret = sst_byt_stream_operations(byt, IPC_IA_DROP_STREAM, 523 stream->str_id, 0); 524 if (ret < 0) 525 dev_err(byt->dev, "ipc: error failed to stop stream %d\n", 526 stream->str_id); 527 return ret; 528} 529 530int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream) 531{ 532 int ret; 533 534 ret = sst_byt_stream_operations(byt, IPC_IA_PAUSE_STREAM, 535 stream->str_id, 0); 536 if (ret < 0) 537 dev_err(byt->dev, "ipc: error failed to pause stream %d\n", 538 stream->str_id); 539 540 return ret; 541} 542 543int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream) 544{ 545 int ret; 546 547 ret = sst_byt_stream_operations(byt, IPC_IA_RESUME_STREAM, 548 stream->str_id, 0); 549 if (ret < 0) 550 dev_err(byt->dev, "ipc: error failed to resume stream %d\n", 551 stream->str_id); 552 553 return ret; 554} 555 556int sst_byt_get_dsp_position(struct sst_byt *byt, 557 struct sst_byt_stream *stream, int buffer_size) 558{ 559 struct sst_dsp *sst = byt->dsp; 560 struct sst_byt_tstamp fw_tstamp; 561 u8 str_id = stream->str_id; 562 u32 tstamp_offset; 563 564 tstamp_offset = SST_BYT_TIMESTAMP_OFFSET + str_id * sizeof(fw_tstamp); 565 memcpy_fromio(&fw_tstamp, 566 sst->addr.lpe + tstamp_offset, sizeof(fw_tstamp)); 567 568 return do_div(fw_tstamp.ring_buffer_counter, buffer_size); 569} 570 571struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt) 572{ 573 return byt->dsp; 574} 575 576static struct sst_dsp_device byt_dev = { 577 .thread = sst_byt_irq_thread, 578 .ops = &sst_byt_ops, 579}; 580 581int sst_byt_dsp_suspend_late(struct device *dev, struct sst_pdata *pdata) 582{ 583 struct sst_byt *byt = pdata->dsp; 584 585 dev_dbg(byt->dev, "dsp reset\n"); 586 sst_dsp_reset(byt->dsp); 587 sst_ipc_drop_all(&byt->ipc); 588 dev_dbg(byt->dev, "dsp in reset\n"); 589 590 dev_dbg(byt->dev, "free all blocks and unload fw\n"); 591 sst_fw_unload(byt->fw); 592 593 return 0; 594} 595EXPORT_SYMBOL_GPL(sst_byt_dsp_suspend_late); 596 597int sst_byt_dsp_boot(struct device *dev, struct sst_pdata *pdata) 598{ 599 struct sst_byt *byt = pdata->dsp; 600 int ret; 601 602 dev_dbg(byt->dev, "reload dsp fw\n"); 603 604 sst_dsp_reset(byt->dsp); 605 606 ret = sst_fw_reload(byt->fw); 607 if (ret < 0) { 608 dev_err(dev, "error: failed to reload firmware\n"); 609 return ret; 610 } 611 612 /* wait for DSP boot completion */ 613 byt->boot_complete = false; 614 sst_dsp_boot(byt->dsp); 615 dev_dbg(byt->dev, "dsp booting...\n"); 616 617 return 0; 618} 619EXPORT_SYMBOL_GPL(sst_byt_dsp_boot); 620 621int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata) 622{ 623 struct sst_byt *byt = pdata->dsp; 624 int err; 625 626 dev_dbg(byt->dev, "wait for dsp reboot\n"); 627 628 err = wait_event_timeout(byt->boot_wait, byt->boot_complete, 629 msecs_to_jiffies(IPC_BOOT_MSECS)); 630 if (err == 0) { 631 dev_err(byt->dev, "ipc: error DSP boot timeout\n"); 632 return -EIO; 633 } 634 635 dev_dbg(byt->dev, "dsp rebooted\n"); 636 return 0; 637} 638EXPORT_SYMBOL_GPL(sst_byt_dsp_wait_for_ready); 639 640static void byt_tx_msg(struct sst_generic_ipc *ipc, struct ipc_message *msg) 641{ 642 if (msg->header & IPC_HEADER_LARGE(true)) 643 sst_dsp_outbox_write(ipc->dsp, msg->tx_data, msg->tx_size); 644 645 sst_dsp_shim_write64_unlocked(ipc->dsp, SST_IPCX, msg->header); 646} 647 648static void byt_shim_dbg(struct sst_generic_ipc *ipc, const char *text) 649{ 650 struct sst_dsp *sst = ipc->dsp; 651 u64 isr, ipcd, imrx, ipcx; 652 653 ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX); 654 isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX); 655 ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); 656 imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX); 657 658 dev_err(ipc->dev, 659 "ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n", 660 text, ipcx, isr, ipcd, imrx); 661} 662 663static void byt_tx_data_copy(struct ipc_message *msg, char *tx_data, 664 size_t tx_size) 665{ 666 /* msg content = lower 32-bit of the header + data */ 667 *(u32 *)msg->tx_data = (u32)(msg->header & (u32)-1); 668 memcpy(msg->tx_data + sizeof(u32), tx_data, tx_size); 669 msg->tx_size += sizeof(u32); 670} 671 672static u64 byt_reply_msg_match(u64 header, u64 *mask) 673{ 674 /* match reply to message sent based on msg and stream IDs */ 675 *mask = IPC_HEADER_MSG_ID_MASK | 676 IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT; 677 header &= *mask; 678 679 return header; 680} 681 682int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata) 683{ 684 struct sst_byt *byt; 685 struct sst_generic_ipc *ipc; 686 struct sst_fw *byt_sst_fw; 687 struct sst_byt_fw_init init; 688 int err; 689 690 dev_dbg(dev, "initialising Byt DSP IPC\n"); 691 692 byt = devm_kzalloc(dev, sizeof(*byt), GFP_KERNEL); 693 if (byt == NULL) 694 return -ENOMEM; 695 696 ipc = &byt->ipc; 697 ipc->dev = dev; 698 ipc->ops.tx_msg = byt_tx_msg; 699 ipc->ops.shim_dbg = byt_shim_dbg; 700 ipc->ops.tx_data_copy = byt_tx_data_copy; 701 ipc->ops.reply_msg_match = byt_reply_msg_match; 702 703 err = sst_ipc_init(ipc); 704 if (err != 0) 705 goto ipc_init_err; 706 707 INIT_LIST_HEAD(&byt->stream_list); 708 init_waitqueue_head(&byt->boot_wait); 709 byt_dev.thread_context = byt; 710 711 /* init SST shim */ 712 byt->dsp = sst_dsp_new(dev, &byt_dev, pdata); 713 if (byt->dsp == NULL) { 714 err = -ENODEV; 715 goto dsp_new_err; 716 } 717 718 ipc->dsp = byt->dsp; 719 720 /* keep the DSP in reset state for base FW loading */ 721 sst_dsp_reset(byt->dsp); 722 723 byt_sst_fw = sst_fw_new(byt->dsp, pdata->fw, byt); 724 if (byt_sst_fw == NULL) { 725 err = -ENODEV; 726 dev_err(dev, "error: failed to load firmware\n"); 727 goto fw_err; 728 } 729 730 /* wait for DSP boot completion */ 731 sst_dsp_boot(byt->dsp); 732 err = wait_event_timeout(byt->boot_wait, byt->boot_complete, 733 msecs_to_jiffies(IPC_BOOT_MSECS)); 734 if (err == 0) { 735 err = -EIO; 736 dev_err(byt->dev, "ipc: error DSP boot timeout\n"); 737 goto boot_err; 738 } 739 740 /* show firmware information */ 741 sst_dsp_inbox_read(byt->dsp, &init, sizeof(init)); 742 dev_info(byt->dev, "FW version: %02x.%02x.%02x.%02x\n", 743 init.fw_version.major, init.fw_version.minor, 744 init.fw_version.build, init.fw_version.type); 745 dev_info(byt->dev, "Build type: %x\n", init.fw_version.type); 746 dev_info(byt->dev, "Build date: %s %s\n", 747 init.build_info.date, init.build_info.time); 748 749 pdata->dsp = byt; 750 byt->fw = byt_sst_fw; 751 752 return 0; 753 754boot_err: 755 sst_dsp_reset(byt->dsp); 756 sst_fw_free(byt_sst_fw); 757fw_err: 758 sst_dsp_free(byt->dsp); 759dsp_new_err: 760 sst_ipc_fini(ipc); 761ipc_init_err: 762 763 return err; 764} 765EXPORT_SYMBOL_GPL(sst_byt_dsp_init); 766 767void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata) 768{ 769 struct sst_byt *byt = pdata->dsp; 770 771 sst_dsp_reset(byt->dsp); 772 sst_fw_free_all(byt->dsp); 773 sst_dsp_free(byt->dsp); 774 sst_ipc_fini(&byt->ipc); 775} 776EXPORT_SYMBOL_GPL(sst_byt_dsp_free); 777