1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // Copyright 2019 NXP 4 // 5 // Author: Daniel Baluta <daniel.baluta@nxp.com> 6 // 7 // Hardware interface for audio DSP on i.MX8 8 9 #include <linux/firmware.h> 10 #include <linux/of_platform.h> 11 #include <linux/of_address.h> 12 #include <linux/of_irq.h> 13 #include <linux/pm_domain.h> 14 15 #include <linux/module.h> 16 #include <sound/sof.h> 17 #include <sound/sof/xtensa.h> 18 #include <linux/firmware/imx/ipc.h> 19 #include <linux/firmware/imx/dsp.h> 20 21 #include <linux/firmware/imx/svc/misc.h> 22 #include <dt-bindings/firmware/imx/rsrc.h> 23 #include "../ops.h" 24 #include "../sof-of-dev.h" 25 #include "imx-common.h" 26 27 /* DSP memories */ 28 #define IRAM_OFFSET 0x10000 29 #define IRAM_SIZE (2 * 1024) 30 #define DRAM0_OFFSET 0x0 31 #define DRAM0_SIZE (32 * 1024) 32 #define DRAM1_OFFSET 0x8000 33 #define DRAM1_SIZE (32 * 1024) 34 #define SYSRAM_OFFSET 0x18000 35 #define SYSRAM_SIZE (256 * 1024) 36 #define SYSROM_OFFSET 0x58000 37 #define SYSROM_SIZE (192 * 1024) 38 39 #define RESET_VECTOR_VADDR 0x596f8000 40 41 #define MBOX_OFFSET 0x800000 42 #define MBOX_SIZE 0x1000 43 44 /* DSP clocks */ 45 static struct clk_bulk_data imx8_dsp_clks[] = { 46 { .id = "ipg" }, 47 { .id = "ocram" }, 48 { .id = "core" }, 49 }; 50 51 struct imx8_priv { 52 struct device *dev; 53 struct snd_sof_dev *sdev; 54 55 /* DSP IPC handler */ 56 struct imx_dsp_ipc *dsp_ipc; 57 struct platform_device *ipc_dev; 58 59 /* System Controller IPC handler */ 60 struct imx_sc_ipc *sc_ipc; 61 62 /* Power domain handling */ 63 int num_domains; 64 struct device **pd_dev; 65 struct device_link **link; 66 67 struct imx_clocks *clks; 68 }; 69 70 static int imx8_get_mailbox_offset(struct snd_sof_dev *sdev) 71 { 72 return MBOX_OFFSET; 73 } 74 75 static int imx8_get_window_offset(struct snd_sof_dev *sdev, u32 id) 76 { 77 return MBOX_OFFSET; 78 } 79 80 static void imx8_dsp_handle_reply(struct imx_dsp_ipc *ipc) 81 { 82 struct imx8_priv *priv = imx_dsp_get_data(ipc); 83 unsigned long flags; 84 85 spin_lock_irqsave(&priv->sdev->ipc_lock, flags); 86 snd_sof_ipc_process_reply(priv->sdev, 0); 87 spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags); 88 } 89 90 static void imx8_dsp_handle_request(struct imx_dsp_ipc *ipc) 91 { 92 struct imx8_priv *priv = imx_dsp_get_data(ipc); 93 u32 p; /* panic code */ 94 95 /* Read the message from the debug box. */ 96 sof_mailbox_read(priv->sdev, priv->sdev->debug_box.offset + 4, &p, sizeof(p)); 97 98 /* Check to see if the message is a panic code (0x0dead***) */ 99 if ((p & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) 100 snd_sof_dsp_panic(priv->sdev, p, true); 101 else 102 snd_sof_ipc_msgs_rx(priv->sdev); 103 } 104 105 static struct imx_dsp_ops dsp_ops = { 106 .handle_reply = imx8_dsp_handle_reply, 107 .handle_request = imx8_dsp_handle_request, 108 }; 109 110 static int imx8_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg) 111 { 112 struct imx8_priv *priv = sdev->pdata->hw_pdata; 113 114 sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data, 115 msg->msg_size); 116 imx_dsp_ring_doorbell(priv->dsp_ipc, 0); 117 118 return 0; 119 } 120 121 /* 122 * DSP control. 123 */ 124 static int imx8x_run(struct snd_sof_dev *sdev) 125 { 126 struct imx8_priv *dsp_priv = sdev->pdata->hw_pdata; 127 int ret; 128 129 ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP, 130 IMX_SC_C_OFS_SEL, 1); 131 if (ret < 0) { 132 dev_err(sdev->dev, "Error system address offset source select\n"); 133 return ret; 134 } 135 136 ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP, 137 IMX_SC_C_OFS_AUDIO, 0x80); 138 if (ret < 0) { 139 dev_err(sdev->dev, "Error system address offset of AUDIO\n"); 140 return ret; 141 } 142 143 ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP, 144 IMX_SC_C_OFS_PERIPH, 0x5A); 145 if (ret < 0) { 146 dev_err(sdev->dev, "Error system address offset of PERIPH %d\n", 147 ret); 148 return ret; 149 } 150 151 ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP, 152 IMX_SC_C_OFS_IRQ, 0x51); 153 if (ret < 0) { 154 dev_err(sdev->dev, "Error system address offset of IRQ\n"); 155 return ret; 156 } 157 158 imx_sc_pm_cpu_start(dsp_priv->sc_ipc, IMX_SC_R_DSP, true, 159 RESET_VECTOR_VADDR); 160 161 return 0; 162 } 163 164 static int imx8_run(struct snd_sof_dev *sdev) 165 { 166 struct imx8_priv *dsp_priv = sdev->pdata->hw_pdata; 167 int ret; 168 169 ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP, 170 IMX_SC_C_OFS_SEL, 0); 171 if (ret < 0) { 172 dev_err(sdev->dev, "Error system address offset source select\n"); 173 return ret; 174 } 175 176 imx_sc_pm_cpu_start(dsp_priv->sc_ipc, IMX_SC_R_DSP, true, 177 RESET_VECTOR_VADDR); 178 179 return 0; 180 } 181 182 static int imx8_probe(struct snd_sof_dev *sdev) 183 { 184 struct platform_device *pdev = 185 container_of(sdev->dev, struct platform_device, dev); 186 struct device_node *np = pdev->dev.of_node; 187 struct device_node *res_node; 188 struct resource *mmio; 189 struct imx8_priv *priv; 190 struct resource res; 191 u32 base, size; 192 int ret = 0; 193 int i; 194 195 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 196 if (!priv) 197 return -ENOMEM; 198 199 priv->clks = devm_kzalloc(&pdev->dev, sizeof(*priv->clks), GFP_KERNEL); 200 if (!priv->clks) 201 return -ENOMEM; 202 203 sdev->num_cores = 1; 204 sdev->pdata->hw_pdata = priv; 205 priv->dev = sdev->dev; 206 priv->sdev = sdev; 207 208 /* power up device associated power domains */ 209 priv->num_domains = of_count_phandle_with_args(np, "power-domains", 210 "#power-domain-cells"); 211 if (priv->num_domains < 0) { 212 dev_err(sdev->dev, "no power-domains property in %pOF\n", np); 213 return priv->num_domains; 214 } 215 216 priv->pd_dev = devm_kmalloc_array(&pdev->dev, priv->num_domains, 217 sizeof(*priv->pd_dev), GFP_KERNEL); 218 if (!priv->pd_dev) 219 return -ENOMEM; 220 221 priv->link = devm_kmalloc_array(&pdev->dev, priv->num_domains, 222 sizeof(*priv->link), GFP_KERNEL); 223 if (!priv->link) 224 return -ENOMEM; 225 226 for (i = 0; i < priv->num_domains; i++) { 227 priv->pd_dev[i] = dev_pm_domain_attach_by_id(&pdev->dev, i); 228 if (IS_ERR(priv->pd_dev[i])) { 229 ret = PTR_ERR(priv->pd_dev[i]); 230 goto exit_unroll_pm; 231 } 232 priv->link[i] = device_link_add(&pdev->dev, priv->pd_dev[i], 233 DL_FLAG_STATELESS | 234 DL_FLAG_PM_RUNTIME | 235 DL_FLAG_RPM_ACTIVE); 236 if (!priv->link[i]) { 237 ret = -ENOMEM; 238 dev_pm_domain_detach(priv->pd_dev[i], false); 239 goto exit_unroll_pm; 240 } 241 } 242 243 ret = imx_scu_get_handle(&priv->sc_ipc); 244 if (ret) { 245 dev_err(sdev->dev, "Cannot obtain SCU handle (err = %d)\n", 246 ret); 247 goto exit_unroll_pm; 248 } 249 250 priv->ipc_dev = platform_device_register_data(sdev->dev, "imx-dsp", 251 PLATFORM_DEVID_NONE, 252 pdev, sizeof(*pdev)); 253 if (IS_ERR(priv->ipc_dev)) { 254 ret = PTR_ERR(priv->ipc_dev); 255 goto exit_unroll_pm; 256 } 257 258 priv->dsp_ipc = dev_get_drvdata(&priv->ipc_dev->dev); 259 if (!priv->dsp_ipc) { 260 /* DSP IPC driver not probed yet, try later */ 261 ret = -EPROBE_DEFER; 262 dev_err(sdev->dev, "Failed to get drvdata\n"); 263 goto exit_pdev_unregister; 264 } 265 266 imx_dsp_set_data(priv->dsp_ipc, priv); 267 priv->dsp_ipc->ops = &dsp_ops; 268 269 /* DSP base */ 270 mmio = platform_get_resource(pdev, IORESOURCE_MEM, 0); 271 if (mmio) { 272 base = mmio->start; 273 size = resource_size(mmio); 274 } else { 275 dev_err(sdev->dev, "error: failed to get DSP base at idx 0\n"); 276 ret = -EINVAL; 277 goto exit_pdev_unregister; 278 } 279 280 sdev->bar[SOF_FW_BLK_TYPE_IRAM] = devm_ioremap(sdev->dev, base, size); 281 if (!sdev->bar[SOF_FW_BLK_TYPE_IRAM]) { 282 dev_err(sdev->dev, "failed to ioremap base 0x%x size 0x%x\n", 283 base, size); 284 ret = -ENODEV; 285 goto exit_pdev_unregister; 286 } 287 sdev->mmio_bar = SOF_FW_BLK_TYPE_IRAM; 288 289 res_node = of_parse_phandle(np, "memory-region", 0); 290 if (!res_node) { 291 dev_err(&pdev->dev, "failed to get memory region node\n"); 292 ret = -ENODEV; 293 goto exit_pdev_unregister; 294 } 295 296 ret = of_address_to_resource(res_node, 0, &res); 297 of_node_put(res_node); 298 if (ret) { 299 dev_err(&pdev->dev, "failed to get reserved region address\n"); 300 goto exit_pdev_unregister; 301 } 302 303 sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap_wc(sdev->dev, res.start, 304 resource_size(&res)); 305 if (!sdev->bar[SOF_FW_BLK_TYPE_SRAM]) { 306 dev_err(sdev->dev, "failed to ioremap mem 0x%x size 0x%x\n", 307 base, size); 308 ret = -ENOMEM; 309 goto exit_pdev_unregister; 310 } 311 sdev->mailbox_bar = SOF_FW_BLK_TYPE_SRAM; 312 313 /* set default mailbox offset for FW ready message */ 314 sdev->dsp_box.offset = MBOX_OFFSET; 315 316 /* init clocks info */ 317 priv->clks->dsp_clks = imx8_dsp_clks; 318 priv->clks->num_dsp_clks = ARRAY_SIZE(imx8_dsp_clks); 319 320 ret = imx8_parse_clocks(sdev, priv->clks); 321 if (ret < 0) 322 goto exit_pdev_unregister; 323 324 ret = imx8_enable_clocks(sdev, priv->clks); 325 if (ret < 0) 326 goto exit_pdev_unregister; 327 328 return 0; 329 330 exit_pdev_unregister: 331 platform_device_unregister(priv->ipc_dev); 332 exit_unroll_pm: 333 while (--i >= 0) { 334 device_link_del(priv->link[i]); 335 dev_pm_domain_detach(priv->pd_dev[i], false); 336 } 337 338 return ret; 339 } 340 341 static int imx8_remove(struct snd_sof_dev *sdev) 342 { 343 struct imx8_priv *priv = sdev->pdata->hw_pdata; 344 int i; 345 346 imx8_disable_clocks(sdev, priv->clks); 347 platform_device_unregister(priv->ipc_dev); 348 349 for (i = 0; i < priv->num_domains; i++) { 350 device_link_del(priv->link[i]); 351 dev_pm_domain_detach(priv->pd_dev[i], false); 352 } 353 354 return 0; 355 } 356 357 /* on i.MX8 there is 1 to 1 match between type and BAR idx */ 358 static int imx8_get_bar_index(struct snd_sof_dev *sdev, u32 type) 359 { 360 /* Only IRAM and SRAM bars are valid */ 361 switch (type) { 362 case SOF_FW_BLK_TYPE_IRAM: 363 case SOF_FW_BLK_TYPE_SRAM: 364 return type; 365 default: 366 return -EINVAL; 367 } 368 } 369 370 static void imx8_suspend(struct snd_sof_dev *sdev) 371 { 372 int i; 373 struct imx8_priv *priv = (struct imx8_priv *)sdev->pdata->hw_pdata; 374 375 for (i = 0; i < DSP_MU_CHAN_NUM; i++) 376 imx_dsp_free_channel(priv->dsp_ipc, i); 377 378 imx8_disable_clocks(sdev, priv->clks); 379 } 380 381 static int imx8_resume(struct snd_sof_dev *sdev) 382 { 383 struct imx8_priv *priv = (struct imx8_priv *)sdev->pdata->hw_pdata; 384 int ret; 385 int i; 386 387 ret = imx8_enable_clocks(sdev, priv->clks); 388 if (ret < 0) 389 return ret; 390 391 for (i = 0; i < DSP_MU_CHAN_NUM; i++) 392 imx_dsp_request_channel(priv->dsp_ipc, i); 393 394 return 0; 395 } 396 397 static int imx8_dsp_runtime_resume(struct snd_sof_dev *sdev) 398 { 399 int ret; 400 const struct sof_dsp_power_state target_dsp_state = { 401 .state = SOF_DSP_PM_D0, 402 }; 403 404 ret = imx8_resume(sdev); 405 if (ret < 0) 406 return ret; 407 408 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state); 409 } 410 411 static int imx8_dsp_runtime_suspend(struct snd_sof_dev *sdev) 412 { 413 const struct sof_dsp_power_state target_dsp_state = { 414 .state = SOF_DSP_PM_D3, 415 }; 416 417 imx8_suspend(sdev); 418 419 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state); 420 } 421 422 static int imx8_dsp_suspend(struct snd_sof_dev *sdev, unsigned int target_state) 423 { 424 const struct sof_dsp_power_state target_dsp_state = { 425 .state = target_state, 426 }; 427 428 if (!pm_runtime_suspended(sdev->dev)) 429 imx8_suspend(sdev); 430 431 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state); 432 } 433 434 static int imx8_dsp_resume(struct snd_sof_dev *sdev) 435 { 436 int ret; 437 const struct sof_dsp_power_state target_dsp_state = { 438 .state = SOF_DSP_PM_D0, 439 }; 440 441 ret = imx8_resume(sdev); 442 if (ret < 0) 443 return ret; 444 445 if (pm_runtime_suspended(sdev->dev)) { 446 pm_runtime_disable(sdev->dev); 447 pm_runtime_set_active(sdev->dev); 448 pm_runtime_mark_last_busy(sdev->dev); 449 pm_runtime_enable(sdev->dev); 450 pm_runtime_idle(sdev->dev); 451 } 452 453 return snd_sof_dsp_set_power_state(sdev, &target_dsp_state); 454 } 455 456 static struct snd_soc_dai_driver imx8_dai[] = { 457 { 458 .name = "esai0", 459 .playback = { 460 .channels_min = 1, 461 .channels_max = 8, 462 }, 463 .capture = { 464 .channels_min = 1, 465 .channels_max = 8, 466 }, 467 }, 468 { 469 .name = "sai1", 470 .playback = { 471 .channels_min = 1, 472 .channels_max = 32, 473 }, 474 .capture = { 475 .channels_min = 1, 476 .channels_max = 32, 477 }, 478 }, 479 }; 480 481 static int imx8_dsp_set_power_state(struct snd_sof_dev *sdev, 482 const struct sof_dsp_power_state *target_state) 483 { 484 sdev->dsp_power_state = *target_state; 485 486 return 0; 487 } 488 489 /* i.MX8 ops */ 490 static struct snd_sof_dsp_ops sof_imx8_ops = { 491 /* probe and remove */ 492 .probe = imx8_probe, 493 .remove = imx8_remove, 494 /* DSP core boot */ 495 .run = imx8_run, 496 497 /* Block IO */ 498 .block_read = sof_block_read, 499 .block_write = sof_block_write, 500 501 /* Mailbox IO */ 502 .mailbox_read = sof_mailbox_read, 503 .mailbox_write = sof_mailbox_write, 504 505 /* ipc */ 506 .send_msg = imx8_send_msg, 507 .get_mailbox_offset = imx8_get_mailbox_offset, 508 .get_window_offset = imx8_get_window_offset, 509 510 .ipc_msg_data = sof_ipc_msg_data, 511 .set_stream_data_offset = sof_set_stream_data_offset, 512 513 .get_bar_index = imx8_get_bar_index, 514 515 /* firmware loading */ 516 .load_firmware = snd_sof_load_firmware_memcpy, 517 518 /* Debug information */ 519 .dbg_dump = imx8_dump, 520 .debugfs_add_region_item = snd_sof_debugfs_add_region_item_iomem, 521 522 /* stream callbacks */ 523 .pcm_open = sof_stream_pcm_open, 524 .pcm_close = sof_stream_pcm_close, 525 526 /* Firmware ops */ 527 .dsp_arch_ops = &sof_xtensa_arch_ops, 528 529 /* DAI drivers */ 530 .drv = imx8_dai, 531 .num_drv = ARRAY_SIZE(imx8_dai), 532 533 /* ALSA HW info flags */ 534 .hw_info = SNDRV_PCM_INFO_MMAP | 535 SNDRV_PCM_INFO_MMAP_VALID | 536 SNDRV_PCM_INFO_INTERLEAVED | 537 SNDRV_PCM_INFO_PAUSE | 538 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP, 539 540 /* PM */ 541 .runtime_suspend = imx8_dsp_runtime_suspend, 542 .runtime_resume = imx8_dsp_runtime_resume, 543 544 .suspend = imx8_dsp_suspend, 545 .resume = imx8_dsp_resume, 546 547 .set_power_state = imx8_dsp_set_power_state, 548 }; 549 550 /* i.MX8X ops */ 551 static struct snd_sof_dsp_ops sof_imx8x_ops = { 552 /* probe and remove */ 553 .probe = imx8_probe, 554 .remove = imx8_remove, 555 /* DSP core boot */ 556 .run = imx8x_run, 557 558 /* Block IO */ 559 .block_read = sof_block_read, 560 .block_write = sof_block_write, 561 562 /* Mailbox IO */ 563 .mailbox_read = sof_mailbox_read, 564 .mailbox_write = sof_mailbox_write, 565 566 /* ipc */ 567 .send_msg = imx8_send_msg, 568 .get_mailbox_offset = imx8_get_mailbox_offset, 569 .get_window_offset = imx8_get_window_offset, 570 571 .ipc_msg_data = sof_ipc_msg_data, 572 .set_stream_data_offset = sof_set_stream_data_offset, 573 574 .get_bar_index = imx8_get_bar_index, 575 576 /* firmware loading */ 577 .load_firmware = snd_sof_load_firmware_memcpy, 578 579 /* Debug information */ 580 .dbg_dump = imx8_dump, 581 .debugfs_add_region_item = snd_sof_debugfs_add_region_item_iomem, 582 583 /* stream callbacks */ 584 .pcm_open = sof_stream_pcm_open, 585 .pcm_close = sof_stream_pcm_close, 586 587 /* Firmware ops */ 588 .dsp_arch_ops = &sof_xtensa_arch_ops, 589 590 /* DAI drivers */ 591 .drv = imx8_dai, 592 .num_drv = ARRAY_SIZE(imx8_dai), 593 594 /* PM */ 595 .runtime_suspend = imx8_dsp_runtime_suspend, 596 .runtime_resume = imx8_dsp_runtime_resume, 597 598 .suspend = imx8_dsp_suspend, 599 .resume = imx8_dsp_resume, 600 601 .set_power_state = imx8_dsp_set_power_state, 602 603 /* ALSA HW info flags */ 604 .hw_info = SNDRV_PCM_INFO_MMAP | 605 SNDRV_PCM_INFO_MMAP_VALID | 606 SNDRV_PCM_INFO_INTERLEAVED | 607 SNDRV_PCM_INFO_PAUSE | 608 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 609 }; 610 611 static struct sof_dev_desc sof_of_imx8qxp_desc = { 612 .ipc_supported_mask = BIT(SOF_IPC), 613 .ipc_default = SOF_IPC, 614 .default_fw_path = { 615 [SOF_IPC] = "imx/sof", 616 }, 617 .default_tplg_path = { 618 [SOF_IPC] = "imx/sof-tplg", 619 }, 620 .default_fw_filename = { 621 [SOF_IPC] = "sof-imx8x.ri", 622 }, 623 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg", 624 .ops = &sof_imx8x_ops, 625 }; 626 627 static struct sof_dev_desc sof_of_imx8qm_desc = { 628 .ipc_supported_mask = BIT(SOF_IPC), 629 .ipc_default = SOF_IPC, 630 .default_fw_path = { 631 [SOF_IPC] = "imx/sof", 632 }, 633 .default_tplg_path = { 634 [SOF_IPC] = "imx/sof-tplg", 635 }, 636 .default_fw_filename = { 637 [SOF_IPC] = "sof-imx8.ri", 638 }, 639 .nocodec_tplg_filename = "sof-imx8-nocodec.tplg", 640 .ops = &sof_imx8_ops, 641 }; 642 643 static const struct of_device_id sof_of_imx8_ids[] = { 644 { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc}, 645 { .compatible = "fsl,imx8qm-dsp", .data = &sof_of_imx8qm_desc}, 646 { } 647 }; 648 MODULE_DEVICE_TABLE(of, sof_of_imx8_ids); 649 650 /* DT driver definition */ 651 static struct platform_driver snd_sof_of_imx8_driver = { 652 .probe = sof_of_probe, 653 .remove = sof_of_remove, 654 .driver = { 655 .name = "sof-audio-of-imx8", 656 .pm = &sof_of_pm, 657 .of_match_table = sof_of_imx8_ids, 658 }, 659 }; 660 module_platform_driver(snd_sof_of_imx8_driver); 661 662 MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA); 663 MODULE_LICENSE("Dual BSD/GPL"); 664