1 /* 2 * wm0010.c -- WM0010 DSP Driver 3 * 4 * Copyright 2012 Wolfson Microelectronics PLC. 5 * 6 * Authors: Mark Brown <broonie@opensource.wolfsonmicro.com> 7 * Dimitris Papastamos <dp@opensource.wolfsonmicro.com> 8 * Scott Ling <sl@opensource.wolfsonmicro.com> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/module.h> 16 #include <linux/moduleparam.h> 17 #include <linux/interrupt.h> 18 #include <linux/irqreturn.h> 19 #include <linux/init.h> 20 #include <linux/spi/spi.h> 21 #include <linux/firmware.h> 22 #include <linux/delay.h> 23 #include <linux/fs.h> 24 #include <linux/gpio.h> 25 #include <linux/regulator/consumer.h> 26 #include <linux/mutex.h> 27 #include <linux/workqueue.h> 28 29 #include <sound/soc.h> 30 #include <sound/wm0010.h> 31 32 #define DEVICE_ID_WM0010 10 33 34 /* We only support v1 of the .dfw INFO record */ 35 #define INFO_VERSION 1 36 37 enum dfw_cmd { 38 DFW_CMD_FUSE = 0x01, 39 DFW_CMD_CODE_HDR, 40 DFW_CMD_CODE_DATA, 41 DFW_CMD_PLL, 42 DFW_CMD_INFO = 0xff 43 }; 44 45 struct dfw_binrec { 46 u8 command; 47 u32 length:24; 48 u32 address; 49 uint8_t data[0]; 50 } __packed; 51 52 struct dfw_inforec { 53 u8 info_version; 54 u8 tool_major_version; 55 u8 tool_minor_version; 56 u8 dsp_target; 57 }; 58 59 struct dfw_pllrec { 60 u8 command; 61 u32 length:24; 62 u32 address; 63 u32 clkctrl1; 64 u32 clkctrl2; 65 u32 clkctrl3; 66 u32 ldetctrl; 67 u32 uart_div; 68 u32 spi_div; 69 } __packed; 70 71 static struct pll_clock_map { 72 int max_sysclk; 73 int max_pll_spi_speed; 74 u32 pll_clkctrl1; 75 } pll_clock_map[] = { /* Dividers */ 76 { 22000000, 26000000, 0x00201f11 }, /* 2,32,2 */ 77 { 18000000, 26000000, 0x00203f21 }, /* 2,64,4 */ 78 { 14000000, 26000000, 0x00202620 }, /* 1,39,4 */ 79 { 10000000, 22000000, 0x00203120 }, /* 1,50,4 */ 80 { 6500000, 22000000, 0x00204520 }, /* 1,70,4 */ 81 { 5500000, 22000000, 0x00103f10 }, /* 1,64,2 */ 82 }; 83 84 enum wm0010_state { 85 WM0010_POWER_OFF, 86 WM0010_OUT_OF_RESET, 87 WM0010_BOOTROM, 88 WM0010_STAGE2, 89 WM0010_FIRMWARE, 90 }; 91 92 struct wm0010_priv { 93 struct snd_soc_component *component; 94 95 struct mutex lock; 96 struct device *dev; 97 98 struct wm0010_pdata pdata; 99 100 int gpio_reset; 101 int gpio_reset_value; 102 103 struct regulator_bulk_data core_supplies[2]; 104 struct regulator *dbvdd; 105 106 int sysclk; 107 108 enum wm0010_state state; 109 bool boot_failed; 110 bool ready; 111 bool pll_running; 112 int max_spi_freq; 113 int board_max_spi_speed; 114 u32 pll_clkctrl1; 115 116 spinlock_t irq_lock; 117 int irq; 118 119 struct completion boot_completion; 120 }; 121 122 struct wm0010_spi_msg { 123 struct spi_message m; 124 struct spi_transfer t; 125 u8 *tx_buf; 126 u8 *rx_buf; 127 size_t len; 128 }; 129 130 static const struct snd_soc_dapm_widget wm0010_dapm_widgets[] = { 131 SND_SOC_DAPM_SUPPLY("CLKIN", SND_SOC_NOPM, 0, 0, NULL, 0), 132 }; 133 134 static const struct snd_soc_dapm_route wm0010_dapm_routes[] = { 135 { "SDI2 Capture", NULL, "SDI1 Playback" }, 136 { "SDI1 Capture", NULL, "SDI2 Playback" }, 137 138 { "SDI1 Capture", NULL, "CLKIN" }, 139 { "SDI2 Capture", NULL, "CLKIN" }, 140 { "SDI1 Playback", NULL, "CLKIN" }, 141 { "SDI2 Playback", NULL, "CLKIN" }, 142 }; 143 144 static const char *wm0010_state_to_str(enum wm0010_state state) 145 { 146 static const char * const state_to_str[] = { 147 "Power off", 148 "Out of reset", 149 "Boot ROM", 150 "Stage2", 151 "Firmware" 152 }; 153 154 if (state < 0 || state >= ARRAY_SIZE(state_to_str)) 155 return "null"; 156 return state_to_str[state]; 157 } 158 159 /* Called with wm0010->lock held */ 160 static void wm0010_halt(struct snd_soc_component *component) 161 { 162 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 163 unsigned long flags; 164 enum wm0010_state state; 165 166 /* Fetch the wm0010 state */ 167 spin_lock_irqsave(&wm0010->irq_lock, flags); 168 state = wm0010->state; 169 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 170 171 switch (state) { 172 case WM0010_POWER_OFF: 173 /* If there's nothing to do, bail out */ 174 return; 175 case WM0010_OUT_OF_RESET: 176 case WM0010_BOOTROM: 177 case WM0010_STAGE2: 178 case WM0010_FIRMWARE: 179 /* Remember to put chip back into reset */ 180 gpio_set_value_cansleep(wm0010->gpio_reset, 181 wm0010->gpio_reset_value); 182 /* Disable the regulators */ 183 regulator_disable(wm0010->dbvdd); 184 regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies), 185 wm0010->core_supplies); 186 break; 187 } 188 189 spin_lock_irqsave(&wm0010->irq_lock, flags); 190 wm0010->state = WM0010_POWER_OFF; 191 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 192 } 193 194 struct wm0010_boot_xfer { 195 struct list_head list; 196 struct snd_soc_component *component; 197 struct completion *done; 198 struct spi_message m; 199 struct spi_transfer t; 200 }; 201 202 /* Called with wm0010->lock held */ 203 static void wm0010_mark_boot_failure(struct wm0010_priv *wm0010) 204 { 205 enum wm0010_state state; 206 unsigned long flags; 207 208 spin_lock_irqsave(&wm0010->irq_lock, flags); 209 state = wm0010->state; 210 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 211 212 dev_err(wm0010->dev, "Failed to transition from `%s' state to `%s' state\n", 213 wm0010_state_to_str(state), wm0010_state_to_str(state + 1)); 214 215 wm0010->boot_failed = true; 216 } 217 218 static void wm0010_boot_xfer_complete(void *data) 219 { 220 struct wm0010_boot_xfer *xfer = data; 221 struct snd_soc_component *component = xfer->component; 222 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 223 u32 *out32 = xfer->t.rx_buf; 224 int i; 225 226 if (xfer->m.status != 0) { 227 dev_err(component->dev, "SPI transfer failed: %d\n", 228 xfer->m.status); 229 wm0010_mark_boot_failure(wm0010); 230 if (xfer->done) 231 complete(xfer->done); 232 return; 233 } 234 235 for (i = 0; i < xfer->t.len / 4; i++) { 236 dev_dbg(component->dev, "%d: %04x\n", i, out32[i]); 237 238 switch (be32_to_cpu(out32[i])) { 239 case 0xe0e0e0e0: 240 dev_err(component->dev, 241 "%d: ROM error reported in stage 2\n", i); 242 wm0010_mark_boot_failure(wm0010); 243 break; 244 245 case 0x55555555: 246 if (wm0010->state < WM0010_STAGE2) 247 break; 248 dev_err(component->dev, 249 "%d: ROM bootloader running in stage 2\n", i); 250 wm0010_mark_boot_failure(wm0010); 251 break; 252 253 case 0x0fed0000: 254 dev_dbg(component->dev, "Stage2 loader running\n"); 255 break; 256 257 case 0x0fed0007: 258 dev_dbg(component->dev, "CODE_HDR packet received\n"); 259 break; 260 261 case 0x0fed0008: 262 dev_dbg(component->dev, "CODE_DATA packet received\n"); 263 break; 264 265 case 0x0fed0009: 266 dev_dbg(component->dev, "Download complete\n"); 267 break; 268 269 case 0x0fed000c: 270 dev_dbg(component->dev, "Application start\n"); 271 break; 272 273 case 0x0fed000e: 274 dev_dbg(component->dev, "PLL packet received\n"); 275 wm0010->pll_running = true; 276 break; 277 278 case 0x0fed0025: 279 dev_err(component->dev, "Device reports image too long\n"); 280 wm0010_mark_boot_failure(wm0010); 281 break; 282 283 case 0x0fed002c: 284 dev_err(component->dev, "Device reports bad SPI packet\n"); 285 wm0010_mark_boot_failure(wm0010); 286 break; 287 288 case 0x0fed0031: 289 dev_err(component->dev, "Device reports SPI read overflow\n"); 290 wm0010_mark_boot_failure(wm0010); 291 break; 292 293 case 0x0fed0032: 294 dev_err(component->dev, "Device reports SPI underclock\n"); 295 wm0010_mark_boot_failure(wm0010); 296 break; 297 298 case 0x0fed0033: 299 dev_err(component->dev, "Device reports bad header packet\n"); 300 wm0010_mark_boot_failure(wm0010); 301 break; 302 303 case 0x0fed0034: 304 dev_err(component->dev, "Device reports invalid packet type\n"); 305 wm0010_mark_boot_failure(wm0010); 306 break; 307 308 case 0x0fed0035: 309 dev_err(component->dev, "Device reports data before header error\n"); 310 wm0010_mark_boot_failure(wm0010); 311 break; 312 313 case 0x0fed0038: 314 dev_err(component->dev, "Device reports invalid PLL packet\n"); 315 break; 316 317 case 0x0fed003a: 318 dev_err(component->dev, "Device reports packet alignment error\n"); 319 wm0010_mark_boot_failure(wm0010); 320 break; 321 322 default: 323 dev_err(component->dev, "Unrecognised return 0x%x\n", 324 be32_to_cpu(out32[i])); 325 wm0010_mark_boot_failure(wm0010); 326 break; 327 } 328 329 if (wm0010->boot_failed) 330 break; 331 } 332 333 if (xfer->done) 334 complete(xfer->done); 335 } 336 337 static void byte_swap_64(u64 *data_in, u64 *data_out, u32 len) 338 { 339 int i; 340 341 for (i = 0; i < len / 8; i++) 342 data_out[i] = cpu_to_be64(le64_to_cpu(data_in[i])); 343 } 344 345 static int wm0010_firmware_load(const char *name, struct snd_soc_component *component) 346 { 347 struct spi_device *spi = to_spi_device(component->dev); 348 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 349 struct list_head xfer_list; 350 struct wm0010_boot_xfer *xfer; 351 int ret; 352 struct completion done; 353 const struct firmware *fw; 354 const struct dfw_binrec *rec; 355 const struct dfw_inforec *inforec; 356 u64 *img; 357 u8 *out, dsp; 358 u32 len, offset; 359 360 INIT_LIST_HEAD(&xfer_list); 361 362 ret = request_firmware(&fw, name, component->dev); 363 if (ret != 0) { 364 dev_err(component->dev, "Failed to request application(%s): %d\n", 365 name, ret); 366 return ret; 367 } 368 369 rec = (const struct dfw_binrec *)fw->data; 370 inforec = (const struct dfw_inforec *)rec->data; 371 offset = 0; 372 dsp = inforec->dsp_target; 373 wm0010->boot_failed = false; 374 if (WARN_ON(!list_empty(&xfer_list))) 375 return -EINVAL; 376 init_completion(&done); 377 378 /* First record should be INFO */ 379 if (rec->command != DFW_CMD_INFO) { 380 dev_err(component->dev, "First record not INFO\r\n"); 381 ret = -EINVAL; 382 goto abort; 383 } 384 385 if (inforec->info_version != INFO_VERSION) { 386 dev_err(component->dev, 387 "Unsupported version (%02d) of INFO record\r\n", 388 inforec->info_version); 389 ret = -EINVAL; 390 goto abort; 391 } 392 393 dev_dbg(component->dev, "Version v%02d INFO record found\r\n", 394 inforec->info_version); 395 396 /* Check it's a DSP file */ 397 if (dsp != DEVICE_ID_WM0010) { 398 dev_err(component->dev, "Not a WM0010 firmware file.\r\n"); 399 ret = -EINVAL; 400 goto abort; 401 } 402 403 /* Skip the info record as we don't need to send it */ 404 offset += ((rec->length) + 8); 405 rec = (void *)&rec->data[rec->length]; 406 407 while (offset < fw->size) { 408 dev_dbg(component->dev, 409 "Packet: command %d, data length = 0x%x\r\n", 410 rec->command, rec->length); 411 len = rec->length + 8; 412 413 xfer = kzalloc(sizeof(*xfer), GFP_KERNEL); 414 if (!xfer) { 415 ret = -ENOMEM; 416 goto abort; 417 } 418 419 xfer->component = component; 420 list_add_tail(&xfer->list, &xfer_list); 421 422 out = kzalloc(len, GFP_KERNEL | GFP_DMA); 423 if (!out) { 424 ret = -ENOMEM; 425 goto abort1; 426 } 427 xfer->t.rx_buf = out; 428 429 img = kzalloc(len, GFP_KERNEL | GFP_DMA); 430 if (!img) { 431 ret = -ENOMEM; 432 goto abort1; 433 } 434 xfer->t.tx_buf = img; 435 436 byte_swap_64((u64 *)&rec->command, img, len); 437 438 spi_message_init(&xfer->m); 439 xfer->m.complete = wm0010_boot_xfer_complete; 440 xfer->m.context = xfer; 441 xfer->t.len = len; 442 xfer->t.bits_per_word = 8; 443 444 if (!wm0010->pll_running) { 445 xfer->t.speed_hz = wm0010->sysclk / 6; 446 } else { 447 xfer->t.speed_hz = wm0010->max_spi_freq; 448 449 if (wm0010->board_max_spi_speed && 450 (wm0010->board_max_spi_speed < wm0010->max_spi_freq)) 451 xfer->t.speed_hz = wm0010->board_max_spi_speed; 452 } 453 454 /* Store max usable spi frequency for later use */ 455 wm0010->max_spi_freq = xfer->t.speed_hz; 456 457 spi_message_add_tail(&xfer->t, &xfer->m); 458 459 offset += ((rec->length) + 8); 460 rec = (void *)&rec->data[rec->length]; 461 462 if (offset >= fw->size) { 463 dev_dbg(component->dev, "All transfers scheduled\n"); 464 xfer->done = &done; 465 } 466 467 ret = spi_async(spi, &xfer->m); 468 if (ret != 0) { 469 dev_err(component->dev, "Write failed: %d\n", ret); 470 goto abort1; 471 } 472 473 if (wm0010->boot_failed) { 474 dev_dbg(component->dev, "Boot fail!\n"); 475 ret = -EINVAL; 476 goto abort1; 477 } 478 } 479 480 wait_for_completion(&done); 481 482 ret = 0; 483 484 abort1: 485 while (!list_empty(&xfer_list)) { 486 xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer, 487 list); 488 kfree(xfer->t.rx_buf); 489 kfree(xfer->t.tx_buf); 490 list_del(&xfer->list); 491 kfree(xfer); 492 } 493 494 abort: 495 release_firmware(fw); 496 return ret; 497 } 498 499 static int wm0010_stage2_load(struct snd_soc_component *component) 500 { 501 struct spi_device *spi = to_spi_device(component->dev); 502 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 503 const struct firmware *fw; 504 struct spi_message m; 505 struct spi_transfer t; 506 u32 *img; 507 u8 *out; 508 int i; 509 int ret = 0; 510 511 ret = request_firmware(&fw, "wm0010_stage2.bin", component->dev); 512 if (ret != 0) { 513 dev_err(component->dev, "Failed to request stage2 loader: %d\n", 514 ret); 515 return ret; 516 } 517 518 dev_dbg(component->dev, "Downloading %zu byte stage 2 loader\n", fw->size); 519 520 /* Copy to local buffer first as vmalloc causes problems for dma */ 521 img = kzalloc(fw->size, GFP_KERNEL | GFP_DMA); 522 if (!img) { 523 ret = -ENOMEM; 524 goto abort2; 525 } 526 527 out = kzalloc(fw->size, GFP_KERNEL | GFP_DMA); 528 if (!out) { 529 ret = -ENOMEM; 530 goto abort1; 531 } 532 533 memcpy(img, &fw->data[0], fw->size); 534 535 spi_message_init(&m); 536 memset(&t, 0, sizeof(t)); 537 t.rx_buf = out; 538 t.tx_buf = img; 539 t.len = fw->size; 540 t.bits_per_word = 8; 541 t.speed_hz = wm0010->sysclk / 10; 542 spi_message_add_tail(&t, &m); 543 544 dev_dbg(component->dev, "Starting initial download at %dHz\n", 545 t.speed_hz); 546 547 ret = spi_sync(spi, &m); 548 if (ret != 0) { 549 dev_err(component->dev, "Initial download failed: %d\n", ret); 550 goto abort; 551 } 552 553 /* Look for errors from the boot ROM */ 554 for (i = 0; i < fw->size; i++) { 555 if (out[i] != 0x55) { 556 dev_err(component->dev, "Boot ROM error: %x in %d\n", 557 out[i], i); 558 wm0010_mark_boot_failure(wm0010); 559 ret = -EBUSY; 560 goto abort; 561 } 562 } 563 abort: 564 kfree(out); 565 abort1: 566 kfree(img); 567 abort2: 568 release_firmware(fw); 569 570 return ret; 571 } 572 573 static int wm0010_boot(struct snd_soc_component *component) 574 { 575 struct spi_device *spi = to_spi_device(component->dev); 576 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 577 unsigned long flags; 578 int ret; 579 struct spi_message m; 580 struct spi_transfer t; 581 struct dfw_pllrec pll_rec; 582 u32 *p, len; 583 u64 *img_swap; 584 u8 *out; 585 int i; 586 587 spin_lock_irqsave(&wm0010->irq_lock, flags); 588 if (wm0010->state != WM0010_POWER_OFF) 589 dev_warn(wm0010->dev, "DSP already powered up!\n"); 590 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 591 592 if (wm0010->sysclk > 26000000) { 593 dev_err(component->dev, "Max DSP clock frequency is 26MHz\n"); 594 ret = -ECANCELED; 595 goto err; 596 } 597 598 mutex_lock(&wm0010->lock); 599 wm0010->pll_running = false; 600 601 dev_dbg(component->dev, "max_spi_freq: %d\n", wm0010->max_spi_freq); 602 603 ret = regulator_bulk_enable(ARRAY_SIZE(wm0010->core_supplies), 604 wm0010->core_supplies); 605 if (ret != 0) { 606 dev_err(&spi->dev, "Failed to enable core supplies: %d\n", 607 ret); 608 mutex_unlock(&wm0010->lock); 609 goto err; 610 } 611 612 ret = regulator_enable(wm0010->dbvdd); 613 if (ret != 0) { 614 dev_err(&spi->dev, "Failed to enable DBVDD: %d\n", ret); 615 goto err_core; 616 } 617 618 /* Release reset */ 619 gpio_set_value_cansleep(wm0010->gpio_reset, !wm0010->gpio_reset_value); 620 spin_lock_irqsave(&wm0010->irq_lock, flags); 621 wm0010->state = WM0010_OUT_OF_RESET; 622 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 623 624 if (!wait_for_completion_timeout(&wm0010->boot_completion, 625 msecs_to_jiffies(20))) 626 dev_err(component->dev, "Failed to get interrupt from DSP\n"); 627 628 spin_lock_irqsave(&wm0010->irq_lock, flags); 629 wm0010->state = WM0010_BOOTROM; 630 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 631 632 ret = wm0010_stage2_load(component); 633 if (ret) 634 goto abort; 635 636 if (!wait_for_completion_timeout(&wm0010->boot_completion, 637 msecs_to_jiffies(20))) 638 dev_err(component->dev, "Failed to get interrupt from DSP loader.\n"); 639 640 spin_lock_irqsave(&wm0010->irq_lock, flags); 641 wm0010->state = WM0010_STAGE2; 642 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 643 644 /* Only initialise PLL if max_spi_freq initialised */ 645 if (wm0010->max_spi_freq) { 646 647 /* Initialise a PLL record */ 648 memset(&pll_rec, 0, sizeof(pll_rec)); 649 pll_rec.command = DFW_CMD_PLL; 650 pll_rec.length = (sizeof(pll_rec) - 8); 651 652 /* On wm0010 only the CLKCTRL1 value is used */ 653 pll_rec.clkctrl1 = wm0010->pll_clkctrl1; 654 655 ret = -ENOMEM; 656 len = pll_rec.length + 8; 657 out = kzalloc(len, GFP_KERNEL | GFP_DMA); 658 if (!out) 659 goto abort; 660 661 img_swap = kzalloc(len, GFP_KERNEL | GFP_DMA); 662 if (!img_swap) 663 goto abort_out; 664 665 /* We need to re-order for 0010 */ 666 byte_swap_64((u64 *)&pll_rec, img_swap, len); 667 668 spi_message_init(&m); 669 memset(&t, 0, sizeof(t)); 670 t.rx_buf = out; 671 t.tx_buf = img_swap; 672 t.len = len; 673 t.bits_per_word = 8; 674 t.speed_hz = wm0010->sysclk / 6; 675 spi_message_add_tail(&t, &m); 676 677 ret = spi_sync(spi, &m); 678 if (ret) { 679 dev_err(component->dev, "First PLL write failed: %d\n", ret); 680 goto abort_swap; 681 } 682 683 /* Use a second send of the message to get the return status */ 684 ret = spi_sync(spi, &m); 685 if (ret) { 686 dev_err(component->dev, "Second PLL write failed: %d\n", ret); 687 goto abort_swap; 688 } 689 690 p = (u32 *)out; 691 692 /* Look for PLL active code from the DSP */ 693 for (i = 0; i < len / 4; i++) { 694 if (*p == 0x0e00ed0f) { 695 dev_dbg(component->dev, "PLL packet received\n"); 696 wm0010->pll_running = true; 697 break; 698 } 699 p++; 700 } 701 702 kfree(img_swap); 703 kfree(out); 704 } else 705 dev_dbg(component->dev, "Not enabling DSP PLL."); 706 707 ret = wm0010_firmware_load("wm0010.dfw", component); 708 709 if (ret != 0) 710 goto abort; 711 712 spin_lock_irqsave(&wm0010->irq_lock, flags); 713 wm0010->state = WM0010_FIRMWARE; 714 spin_unlock_irqrestore(&wm0010->irq_lock, flags); 715 716 mutex_unlock(&wm0010->lock); 717 718 return 0; 719 720 abort_swap: 721 kfree(img_swap); 722 abort_out: 723 kfree(out); 724 abort: 725 /* Put the chip back into reset */ 726 wm0010_halt(component); 727 mutex_unlock(&wm0010->lock); 728 return ret; 729 730 err_core: 731 mutex_unlock(&wm0010->lock); 732 regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies), 733 wm0010->core_supplies); 734 err: 735 return ret; 736 } 737 738 static int wm0010_set_bias_level(struct snd_soc_component *component, 739 enum snd_soc_bias_level level) 740 { 741 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 742 743 switch (level) { 744 case SND_SOC_BIAS_ON: 745 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_PREPARE) 746 wm0010_boot(component); 747 break; 748 case SND_SOC_BIAS_PREPARE: 749 break; 750 case SND_SOC_BIAS_STANDBY: 751 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_PREPARE) { 752 mutex_lock(&wm0010->lock); 753 wm0010_halt(component); 754 mutex_unlock(&wm0010->lock); 755 } 756 break; 757 case SND_SOC_BIAS_OFF: 758 break; 759 } 760 761 return 0; 762 } 763 764 static int wm0010_set_sysclk(struct snd_soc_component *component, int source, 765 int clk_id, unsigned int freq, int dir) 766 { 767 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 768 unsigned int i; 769 770 wm0010->sysclk = freq; 771 772 if (freq < pll_clock_map[ARRAY_SIZE(pll_clock_map)-1].max_sysclk) { 773 wm0010->max_spi_freq = 0; 774 } else { 775 for (i = 0; i < ARRAY_SIZE(pll_clock_map); i++) 776 if (freq >= pll_clock_map[i].max_sysclk) { 777 wm0010->max_spi_freq = pll_clock_map[i].max_pll_spi_speed; 778 wm0010->pll_clkctrl1 = pll_clock_map[i].pll_clkctrl1; 779 break; 780 } 781 } 782 783 return 0; 784 } 785 786 static int wm0010_probe(struct snd_soc_component *component); 787 788 static const struct snd_soc_component_driver soc_component_dev_wm0010 = { 789 .probe = wm0010_probe, 790 .set_bias_level = wm0010_set_bias_level, 791 .set_sysclk = wm0010_set_sysclk, 792 .dapm_widgets = wm0010_dapm_widgets, 793 .num_dapm_widgets = ARRAY_SIZE(wm0010_dapm_widgets), 794 .dapm_routes = wm0010_dapm_routes, 795 .num_dapm_routes = ARRAY_SIZE(wm0010_dapm_routes), 796 .use_pmdown_time = 1, 797 .endianness = 1, 798 .non_legacy_dai_naming = 1, 799 }; 800 801 #define WM0010_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 802 #define WM0010_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\ 803 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |\ 804 SNDRV_PCM_FMTBIT_S32_LE) 805 806 static struct snd_soc_dai_driver wm0010_dai[] = { 807 { 808 .name = "wm0010-sdi1", 809 .playback = { 810 .stream_name = "SDI1 Playback", 811 .channels_min = 1, 812 .channels_max = 2, 813 .rates = WM0010_RATES, 814 .formats = WM0010_FORMATS, 815 }, 816 .capture = { 817 .stream_name = "SDI1 Capture", 818 .channels_min = 1, 819 .channels_max = 2, 820 .rates = WM0010_RATES, 821 .formats = WM0010_FORMATS, 822 }, 823 }, 824 { 825 .name = "wm0010-sdi2", 826 .playback = { 827 .stream_name = "SDI2 Playback", 828 .channels_min = 1, 829 .channels_max = 2, 830 .rates = WM0010_RATES, 831 .formats = WM0010_FORMATS, 832 }, 833 .capture = { 834 .stream_name = "SDI2 Capture", 835 .channels_min = 1, 836 .channels_max = 2, 837 .rates = WM0010_RATES, 838 .formats = WM0010_FORMATS, 839 }, 840 }, 841 }; 842 843 static irqreturn_t wm0010_irq(int irq, void *data) 844 { 845 struct wm0010_priv *wm0010 = data; 846 847 switch (wm0010->state) { 848 case WM0010_OUT_OF_RESET: 849 case WM0010_BOOTROM: 850 case WM0010_STAGE2: 851 spin_lock(&wm0010->irq_lock); 852 complete(&wm0010->boot_completion); 853 spin_unlock(&wm0010->irq_lock); 854 return IRQ_HANDLED; 855 default: 856 return IRQ_NONE; 857 } 858 859 return IRQ_NONE; 860 } 861 862 static int wm0010_probe(struct snd_soc_component *component) 863 { 864 struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component); 865 866 wm0010->component = component; 867 868 return 0; 869 } 870 871 static int wm0010_spi_probe(struct spi_device *spi) 872 { 873 unsigned long gpio_flags; 874 int ret; 875 int trigger; 876 int irq; 877 struct wm0010_priv *wm0010; 878 879 wm0010 = devm_kzalloc(&spi->dev, sizeof(*wm0010), 880 GFP_KERNEL); 881 if (!wm0010) 882 return -ENOMEM; 883 884 mutex_init(&wm0010->lock); 885 spin_lock_init(&wm0010->irq_lock); 886 887 spi_set_drvdata(spi, wm0010); 888 wm0010->dev = &spi->dev; 889 890 if (dev_get_platdata(&spi->dev)) 891 memcpy(&wm0010->pdata, dev_get_platdata(&spi->dev), 892 sizeof(wm0010->pdata)); 893 894 init_completion(&wm0010->boot_completion); 895 896 wm0010->core_supplies[0].supply = "AVDD"; 897 wm0010->core_supplies[1].supply = "DCVDD"; 898 ret = devm_regulator_bulk_get(wm0010->dev, ARRAY_SIZE(wm0010->core_supplies), 899 wm0010->core_supplies); 900 if (ret != 0) { 901 dev_err(wm0010->dev, "Failed to obtain core supplies: %d\n", 902 ret); 903 return ret; 904 } 905 906 wm0010->dbvdd = devm_regulator_get(wm0010->dev, "DBVDD"); 907 if (IS_ERR(wm0010->dbvdd)) { 908 ret = PTR_ERR(wm0010->dbvdd); 909 dev_err(wm0010->dev, "Failed to obtain DBVDD: %d\n", ret); 910 return ret; 911 } 912 913 if (wm0010->pdata.gpio_reset) { 914 wm0010->gpio_reset = wm0010->pdata.gpio_reset; 915 916 if (wm0010->pdata.reset_active_high) 917 wm0010->gpio_reset_value = 1; 918 else 919 wm0010->gpio_reset_value = 0; 920 921 if (wm0010->gpio_reset_value) 922 gpio_flags = GPIOF_OUT_INIT_HIGH; 923 else 924 gpio_flags = GPIOF_OUT_INIT_LOW; 925 926 ret = devm_gpio_request_one(wm0010->dev, wm0010->gpio_reset, 927 gpio_flags, "wm0010 reset"); 928 if (ret < 0) { 929 dev_err(wm0010->dev, 930 "Failed to request GPIO for DSP reset: %d\n", 931 ret); 932 return ret; 933 } 934 } else { 935 dev_err(wm0010->dev, "No reset GPIO configured\n"); 936 return -EINVAL; 937 } 938 939 wm0010->state = WM0010_POWER_OFF; 940 941 irq = spi->irq; 942 if (wm0010->pdata.irq_flags) 943 trigger = wm0010->pdata.irq_flags; 944 else 945 trigger = IRQF_TRIGGER_FALLING; 946 trigger |= IRQF_ONESHOT; 947 948 ret = request_threaded_irq(irq, NULL, wm0010_irq, trigger, 949 "wm0010", wm0010); 950 if (ret) { 951 dev_err(wm0010->dev, "Failed to request IRQ %d: %d\n", 952 irq, ret); 953 return ret; 954 } 955 wm0010->irq = irq; 956 957 ret = irq_set_irq_wake(irq, 1); 958 if (ret) { 959 dev_err(wm0010->dev, "Failed to set IRQ %d as wake source: %d\n", 960 irq, ret); 961 return ret; 962 } 963 964 if (spi->max_speed_hz) 965 wm0010->board_max_spi_speed = spi->max_speed_hz; 966 else 967 wm0010->board_max_spi_speed = 0; 968 969 ret = devm_snd_soc_register_component(&spi->dev, 970 &soc_component_dev_wm0010, wm0010_dai, 971 ARRAY_SIZE(wm0010_dai)); 972 if (ret < 0) 973 return ret; 974 975 return 0; 976 } 977 978 static int wm0010_spi_remove(struct spi_device *spi) 979 { 980 struct wm0010_priv *wm0010 = spi_get_drvdata(spi); 981 982 gpio_set_value_cansleep(wm0010->gpio_reset, 983 wm0010->gpio_reset_value); 984 985 irq_set_irq_wake(wm0010->irq, 0); 986 987 if (wm0010->irq) 988 free_irq(wm0010->irq, wm0010); 989 990 return 0; 991 } 992 993 static struct spi_driver wm0010_spi_driver = { 994 .driver = { 995 .name = "wm0010", 996 }, 997 .probe = wm0010_spi_probe, 998 .remove = wm0010_spi_remove, 999 }; 1000 1001 module_spi_driver(wm0010_spi_driver); 1002 1003 MODULE_DESCRIPTION("ASoC WM0010 driver"); 1004 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); 1005 MODULE_LICENSE("GPL"); 1006