1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * skl.c - Implementation of ASoC Intel SKL HD Audio driver 4 * 5 * Copyright (C) 2014-2015 Intel Corp 6 * Author: Jeeja KP <jeeja.kp@intel.com> 7 * 8 * Derived mostly from Intel HDA driver with following copyrights: 9 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> 10 * PeiSen Hou <pshou@realtek.com.tw> 11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 12 * 13 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 14 */ 15 16 #include <linux/module.h> 17 #include <linux/pci.h> 18 #include <linux/pm_runtime.h> 19 #include <linux/platform_device.h> 20 #include <linux/firmware.h> 21 #include <linux/delay.h> 22 #include <sound/pcm.h> 23 #include <sound/soc-acpi.h> 24 #include <sound/soc-acpi-intel-match.h> 25 #include <sound/hda_register.h> 26 #include <sound/hdaudio.h> 27 #include <sound/hda_i915.h> 28 #include <sound/hda_codec.h> 29 #include <sound/intel-nhlt.h> 30 #include <sound/intel-dsp-config.h> 31 #include "skl.h" 32 #include "skl-sst-dsp.h" 33 #include "skl-sst-ipc.h" 34 35 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) 36 #include "../../../soc/codecs/hdac_hda.h" 37 #endif 38 static int skl_pci_binding; 39 module_param_named(pci_binding, skl_pci_binding, int, 0444); 40 MODULE_PARM_DESC(pci_binding, "PCI binding (0=auto, 1=only legacy, 2=only asoc"); 41 42 /* 43 * initialize the PCI registers 44 */ 45 static void skl_update_pci_byte(struct pci_dev *pci, unsigned int reg, 46 unsigned char mask, unsigned char val) 47 { 48 unsigned char data; 49 50 pci_read_config_byte(pci, reg, &data); 51 data &= ~mask; 52 data |= (val & mask); 53 pci_write_config_byte(pci, reg, data); 54 } 55 56 static void skl_init_pci(struct skl_dev *skl) 57 { 58 struct hdac_bus *bus = skl_to_bus(skl); 59 60 /* 61 * Clear bits 0-2 of PCI register TCSEL (at offset 0x44) 62 * TCSEL == Traffic Class Select Register, which sets PCI express QOS 63 * Ensuring these bits are 0 clears playback static on some HD Audio 64 * codecs. 65 * The PCI register TCSEL is defined in the Intel manuals. 66 */ 67 dev_dbg(bus->dev, "Clearing TCSEL\n"); 68 skl_update_pci_byte(skl->pci, AZX_PCIREG_TCSEL, 0x07, 0); 69 } 70 71 static void update_pci_dword(struct pci_dev *pci, 72 unsigned int reg, u32 mask, u32 val) 73 { 74 u32 data = 0; 75 76 pci_read_config_dword(pci, reg, &data); 77 data &= ~mask; 78 data |= (val & mask); 79 pci_write_config_dword(pci, reg, data); 80 } 81 82 /* 83 * skl_enable_miscbdcge - enable/dsiable CGCTL.MISCBDCGE bits 84 * 85 * @dev: device pointer 86 * @enable: enable/disable flag 87 */ 88 static void skl_enable_miscbdcge(struct device *dev, bool enable) 89 { 90 struct pci_dev *pci = to_pci_dev(dev); 91 u32 val; 92 93 val = enable ? AZX_CGCTL_MISCBDCGE_MASK : 0; 94 95 update_pci_dword(pci, AZX_PCIREG_CGCTL, AZX_CGCTL_MISCBDCGE_MASK, val); 96 } 97 98 /** 99 * skl_clock_power_gating: Enable/Disable clock and power gating 100 * 101 * @dev: Device pointer 102 * @enable: Enable/Disable flag 103 */ 104 static void skl_clock_power_gating(struct device *dev, bool enable) 105 { 106 struct pci_dev *pci = to_pci_dev(dev); 107 struct hdac_bus *bus = pci_get_drvdata(pci); 108 u32 val; 109 110 /* Update PDCGE bit of CGCTL register */ 111 val = enable ? AZX_CGCTL_ADSPDCGE : 0; 112 update_pci_dword(pci, AZX_PCIREG_CGCTL, AZX_CGCTL_ADSPDCGE, val); 113 114 /* Update L1SEN bit of EM2 register */ 115 val = enable ? AZX_REG_VS_EM2_L1SEN : 0; 116 snd_hdac_chip_updatel(bus, VS_EM2, AZX_REG_VS_EM2_L1SEN, val); 117 118 /* Update ADSPPGD bit of PGCTL register */ 119 val = enable ? 0 : AZX_PGCTL_ADSPPGD; 120 update_pci_dword(pci, AZX_PCIREG_PGCTL, AZX_PGCTL_ADSPPGD, val); 121 } 122 123 /* 124 * While performing reset, controller may not come back properly causing 125 * issues, so recommendation is to set CGCTL.MISCBDCGE to 0 then do reset 126 * (init chip) and then again set CGCTL.MISCBDCGE to 1 127 */ 128 static int skl_init_chip(struct hdac_bus *bus, bool full_reset) 129 { 130 struct hdac_ext_link *hlink; 131 int ret; 132 133 snd_hdac_set_codec_wakeup(bus, true); 134 skl_enable_miscbdcge(bus->dev, false); 135 ret = snd_hdac_bus_init_chip(bus, full_reset); 136 137 /* Reset stream-to-link mapping */ 138 list_for_each_entry(hlink, &bus->hlink_list, list) 139 writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV); 140 141 skl_enable_miscbdcge(bus->dev, true); 142 snd_hdac_set_codec_wakeup(bus, false); 143 144 return ret; 145 } 146 147 void skl_update_d0i3c(struct device *dev, bool enable) 148 { 149 struct pci_dev *pci = to_pci_dev(dev); 150 struct hdac_bus *bus = pci_get_drvdata(pci); 151 u8 reg; 152 int timeout = 50; 153 154 reg = snd_hdac_chip_readb(bus, VS_D0I3C); 155 /* Do not write to D0I3C until command in progress bit is cleared */ 156 while ((reg & AZX_REG_VS_D0I3C_CIP) && --timeout) { 157 udelay(10); 158 reg = snd_hdac_chip_readb(bus, VS_D0I3C); 159 } 160 161 /* Highly unlikely. But if it happens, flag error explicitly */ 162 if (!timeout) { 163 dev_err(bus->dev, "Before D0I3C update: D0I3C CIP timeout\n"); 164 return; 165 } 166 167 if (enable) 168 reg = reg | AZX_REG_VS_D0I3C_I3; 169 else 170 reg = reg & (~AZX_REG_VS_D0I3C_I3); 171 172 snd_hdac_chip_writeb(bus, VS_D0I3C, reg); 173 174 timeout = 50; 175 /* Wait for cmd in progress to be cleared before exiting the function */ 176 reg = snd_hdac_chip_readb(bus, VS_D0I3C); 177 while ((reg & AZX_REG_VS_D0I3C_CIP) && --timeout) { 178 udelay(10); 179 reg = snd_hdac_chip_readb(bus, VS_D0I3C); 180 } 181 182 /* Highly unlikely. But if it happens, flag error explicitly */ 183 if (!timeout) { 184 dev_err(bus->dev, "After D0I3C update: D0I3C CIP timeout\n"); 185 return; 186 } 187 188 dev_dbg(bus->dev, "D0I3C register = 0x%x\n", 189 snd_hdac_chip_readb(bus, VS_D0I3C)); 190 } 191 192 /** 193 * skl_dum_set - set DUM bit in EM2 register 194 * @bus: HD-audio core bus 195 * 196 * Addresses incorrect position reporting for capture streams. 197 * Used on device power up. 198 */ 199 static void skl_dum_set(struct hdac_bus *bus) 200 { 201 /* For the DUM bit to be set, CRST needs to be out of reset state */ 202 if (!(snd_hdac_chip_readb(bus, GCTL) & AZX_GCTL_RESET)) { 203 skl_enable_miscbdcge(bus->dev, false); 204 snd_hdac_bus_exit_link_reset(bus); 205 skl_enable_miscbdcge(bus->dev, true); 206 } 207 208 snd_hdac_chip_updatel(bus, VS_EM2, AZX_VS_EM2_DUM, AZX_VS_EM2_DUM); 209 } 210 211 /* called from IRQ */ 212 static void skl_stream_update(struct hdac_bus *bus, struct hdac_stream *hstr) 213 { 214 snd_pcm_period_elapsed(hstr->substream); 215 } 216 217 static irqreturn_t skl_interrupt(int irq, void *dev_id) 218 { 219 struct hdac_bus *bus = dev_id; 220 u32 status; 221 222 if (!pm_runtime_active(bus->dev)) 223 return IRQ_NONE; 224 225 spin_lock(&bus->reg_lock); 226 227 status = snd_hdac_chip_readl(bus, INTSTS); 228 if (status == 0 || status == 0xffffffff) { 229 spin_unlock(&bus->reg_lock); 230 return IRQ_NONE; 231 } 232 233 /* clear rirb int */ 234 status = snd_hdac_chip_readb(bus, RIRBSTS); 235 if (status & RIRB_INT_MASK) { 236 if (status & RIRB_INT_RESPONSE) 237 snd_hdac_bus_update_rirb(bus); 238 snd_hdac_chip_writeb(bus, RIRBSTS, RIRB_INT_MASK); 239 } 240 241 spin_unlock(&bus->reg_lock); 242 243 return snd_hdac_chip_readl(bus, INTSTS) ? IRQ_WAKE_THREAD : IRQ_HANDLED; 244 } 245 246 static irqreturn_t skl_threaded_handler(int irq, void *dev_id) 247 { 248 struct hdac_bus *bus = dev_id; 249 u32 status; 250 251 status = snd_hdac_chip_readl(bus, INTSTS); 252 253 snd_hdac_bus_handle_stream_irq(bus, status, skl_stream_update); 254 255 return IRQ_HANDLED; 256 } 257 258 static int skl_acquire_irq(struct hdac_bus *bus, int do_disconnect) 259 { 260 struct skl_dev *skl = bus_to_skl(bus); 261 int ret; 262 263 ret = request_threaded_irq(skl->pci->irq, skl_interrupt, 264 skl_threaded_handler, 265 IRQF_SHARED, 266 KBUILD_MODNAME, bus); 267 if (ret) { 268 dev_err(bus->dev, 269 "unable to grab IRQ %d, disabling device\n", 270 skl->pci->irq); 271 return ret; 272 } 273 274 bus->irq = skl->pci->irq; 275 pci_intx(skl->pci, 1); 276 277 return 0; 278 } 279 280 static int skl_suspend_late(struct device *dev) 281 { 282 struct pci_dev *pci = to_pci_dev(dev); 283 struct hdac_bus *bus = pci_get_drvdata(pci); 284 struct skl_dev *skl = bus_to_skl(bus); 285 286 return skl_suspend_late_dsp(skl); 287 } 288 289 #ifdef CONFIG_PM 290 static int _skl_suspend(struct hdac_bus *bus) 291 { 292 struct skl_dev *skl = bus_to_skl(bus); 293 struct pci_dev *pci = to_pci_dev(bus->dev); 294 int ret; 295 296 snd_hdac_ext_bus_link_power_down_all(bus); 297 298 ret = skl_suspend_dsp(skl); 299 if (ret < 0) 300 return ret; 301 302 snd_hdac_bus_stop_chip(bus); 303 update_pci_dword(pci, AZX_PCIREG_PGCTL, 304 AZX_PGCTL_LSRMD_MASK, AZX_PGCTL_LSRMD_MASK); 305 skl_enable_miscbdcge(bus->dev, false); 306 snd_hdac_bus_enter_link_reset(bus); 307 skl_enable_miscbdcge(bus->dev, true); 308 skl_cleanup_resources(skl); 309 310 return 0; 311 } 312 313 static int _skl_resume(struct hdac_bus *bus) 314 { 315 struct skl_dev *skl = bus_to_skl(bus); 316 317 skl_init_pci(skl); 318 skl_dum_set(bus); 319 skl_init_chip(bus, true); 320 321 return skl_resume_dsp(skl); 322 } 323 #endif 324 325 #ifdef CONFIG_PM_SLEEP 326 /* 327 * power management 328 */ 329 static int skl_suspend(struct device *dev) 330 { 331 struct pci_dev *pci = to_pci_dev(dev); 332 struct hdac_bus *bus = pci_get_drvdata(pci); 333 struct skl_dev *skl = bus_to_skl(bus); 334 int ret; 335 336 /* 337 * Do not suspend if streams which are marked ignore suspend are 338 * running, we need to save the state for these and continue 339 */ 340 if (skl->supend_active) { 341 /* turn off the links and stop the CORB/RIRB DMA if it is On */ 342 snd_hdac_ext_bus_link_power_down_all(bus); 343 344 if (bus->cmd_dma_state) 345 snd_hdac_bus_stop_cmd_io(bus); 346 347 enable_irq_wake(bus->irq); 348 pci_save_state(pci); 349 } else { 350 ret = _skl_suspend(bus); 351 if (ret < 0) 352 return ret; 353 skl->fw_loaded = false; 354 } 355 356 return 0; 357 } 358 359 static int skl_resume(struct device *dev) 360 { 361 struct pci_dev *pci = to_pci_dev(dev); 362 struct hdac_bus *bus = pci_get_drvdata(pci); 363 struct skl_dev *skl = bus_to_skl(bus); 364 struct hdac_ext_link *hlink; 365 int ret; 366 367 /* 368 * resume only when we are not in suspend active, otherwise need to 369 * restore the device 370 */ 371 if (skl->supend_active) { 372 pci_restore_state(pci); 373 snd_hdac_ext_bus_link_power_up_all(bus); 374 disable_irq_wake(bus->irq); 375 /* 376 * turn On the links which are On before active suspend 377 * and start the CORB/RIRB DMA if On before 378 * active suspend. 379 */ 380 list_for_each_entry(hlink, &bus->hlink_list, list) { 381 if (hlink->ref_count) 382 snd_hdac_ext_bus_link_power_up(hlink); 383 } 384 385 ret = 0; 386 if (bus->cmd_dma_state) 387 snd_hdac_bus_init_cmd_io(bus); 388 } else { 389 ret = _skl_resume(bus); 390 391 /* turn off the links which are off before suspend */ 392 list_for_each_entry(hlink, &bus->hlink_list, list) { 393 if (!hlink->ref_count) 394 snd_hdac_ext_bus_link_power_down(hlink); 395 } 396 397 if (!bus->cmd_dma_state) 398 snd_hdac_bus_stop_cmd_io(bus); 399 } 400 401 return ret; 402 } 403 #endif /* CONFIG_PM_SLEEP */ 404 405 #ifdef CONFIG_PM 406 static int skl_runtime_suspend(struct device *dev) 407 { 408 struct pci_dev *pci = to_pci_dev(dev); 409 struct hdac_bus *bus = pci_get_drvdata(pci); 410 411 dev_dbg(bus->dev, "in %s\n", __func__); 412 413 return _skl_suspend(bus); 414 } 415 416 static int skl_runtime_resume(struct device *dev) 417 { 418 struct pci_dev *pci = to_pci_dev(dev); 419 struct hdac_bus *bus = pci_get_drvdata(pci); 420 421 dev_dbg(bus->dev, "in %s\n", __func__); 422 423 return _skl_resume(bus); 424 } 425 #endif /* CONFIG_PM */ 426 427 static const struct dev_pm_ops skl_pm = { 428 SET_SYSTEM_SLEEP_PM_OPS(skl_suspend, skl_resume) 429 SET_RUNTIME_PM_OPS(skl_runtime_suspend, skl_runtime_resume, NULL) 430 .suspend_late = skl_suspend_late, 431 }; 432 433 /* 434 * destructor 435 */ 436 static int skl_free(struct hdac_bus *bus) 437 { 438 struct skl_dev *skl = bus_to_skl(bus); 439 440 skl->init_done = 0; /* to be sure */ 441 442 snd_hdac_stop_streams_and_chip(bus); 443 444 if (bus->irq >= 0) 445 free_irq(bus->irq, (void *)bus); 446 snd_hdac_bus_free_stream_pages(bus); 447 snd_hdac_stream_free_all(bus); 448 snd_hdac_link_free_all(bus); 449 450 if (bus->remap_addr) 451 iounmap(bus->remap_addr); 452 453 pci_release_regions(skl->pci); 454 pci_disable_device(skl->pci); 455 456 snd_hdac_ext_bus_exit(bus); 457 458 if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) { 459 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 460 snd_hdac_i915_exit(bus); 461 } 462 463 return 0; 464 } 465 466 /* 467 * For each ssp there are 3 clocks (mclk/sclk/sclkfs). 468 * e.g. for ssp0, clocks will be named as 469 * "ssp0_mclk", "ssp0_sclk", "ssp0_sclkfs" 470 * So for skl+, there are 6 ssps, so 18 clocks will be created. 471 */ 472 static struct skl_ssp_clk skl_ssp_clks[] = { 473 {.name = "ssp0_mclk"}, {.name = "ssp1_mclk"}, {.name = "ssp2_mclk"}, 474 {.name = "ssp3_mclk"}, {.name = "ssp4_mclk"}, {.name = "ssp5_mclk"}, 475 {.name = "ssp0_sclk"}, {.name = "ssp1_sclk"}, {.name = "ssp2_sclk"}, 476 {.name = "ssp3_sclk"}, {.name = "ssp4_sclk"}, {.name = "ssp5_sclk"}, 477 {.name = "ssp0_sclkfs"}, {.name = "ssp1_sclkfs"}, 478 {.name = "ssp2_sclkfs"}, 479 {.name = "ssp3_sclkfs"}, {.name = "ssp4_sclkfs"}, 480 {.name = "ssp5_sclkfs"}, 481 }; 482 483 static struct snd_soc_acpi_mach *skl_find_hda_machine(struct skl_dev *skl, 484 struct snd_soc_acpi_mach *machines) 485 { 486 struct snd_soc_acpi_mach *mach; 487 488 /* point to common table */ 489 mach = snd_soc_acpi_intel_hda_machines; 490 491 /* all entries in the machine table use the same firmware */ 492 mach->fw_filename = machines->fw_filename; 493 494 return mach; 495 } 496 497 static int skl_find_machine(struct skl_dev *skl, void *driver_data) 498 { 499 struct hdac_bus *bus = skl_to_bus(skl); 500 struct snd_soc_acpi_mach *mach = driver_data; 501 struct skl_machine_pdata *pdata; 502 503 mach = snd_soc_acpi_find_machine(mach); 504 if (!mach) { 505 dev_dbg(bus->dev, "No matching I2S machine driver found\n"); 506 mach = skl_find_hda_machine(skl, driver_data); 507 if (!mach) { 508 dev_err(bus->dev, "No matching machine driver found\n"); 509 return -ENODEV; 510 } 511 } 512 513 skl->mach = mach; 514 skl->fw_name = mach->fw_filename; 515 pdata = mach->pdata; 516 517 if (pdata) { 518 skl->use_tplg_pcm = pdata->use_tplg_pcm; 519 mach->mach_params.dmic_num = 520 intel_nhlt_get_dmic_geo(&skl->pci->dev, 521 skl->nhlt); 522 } 523 524 return 0; 525 } 526 527 static int skl_machine_device_register(struct skl_dev *skl) 528 { 529 struct snd_soc_acpi_mach *mach = skl->mach; 530 struct hdac_bus *bus = skl_to_bus(skl); 531 struct platform_device *pdev; 532 int ret; 533 534 pdev = platform_device_alloc(mach->drv_name, -1); 535 if (pdev == NULL) { 536 dev_err(bus->dev, "platform device alloc failed\n"); 537 return -EIO; 538 } 539 540 mach->mach_params.platform = dev_name(bus->dev); 541 mach->mach_params.codec_mask = bus->codec_mask; 542 543 ret = platform_device_add_data(pdev, (const void *)mach, sizeof(*mach)); 544 if (ret) { 545 dev_err(bus->dev, "failed to add machine device platform data\n"); 546 platform_device_put(pdev); 547 return ret; 548 } 549 550 ret = platform_device_add(pdev); 551 if (ret) { 552 dev_err(bus->dev, "failed to add machine device\n"); 553 platform_device_put(pdev); 554 return -EIO; 555 } 556 557 558 skl->i2s_dev = pdev; 559 560 return 0; 561 } 562 563 static void skl_machine_device_unregister(struct skl_dev *skl) 564 { 565 if (skl->i2s_dev) 566 platform_device_unregister(skl->i2s_dev); 567 } 568 569 static int skl_dmic_device_register(struct skl_dev *skl) 570 { 571 struct hdac_bus *bus = skl_to_bus(skl); 572 struct platform_device *pdev; 573 int ret; 574 575 /* SKL has one dmic port, so allocate dmic device for this */ 576 pdev = platform_device_alloc("dmic-codec", -1); 577 if (!pdev) { 578 dev_err(bus->dev, "failed to allocate dmic device\n"); 579 return -ENOMEM; 580 } 581 582 ret = platform_device_add(pdev); 583 if (ret) { 584 dev_err(bus->dev, "failed to add dmic device: %d\n", ret); 585 platform_device_put(pdev); 586 return ret; 587 } 588 skl->dmic_dev = pdev; 589 590 return 0; 591 } 592 593 static void skl_dmic_device_unregister(struct skl_dev *skl) 594 { 595 if (skl->dmic_dev) 596 platform_device_unregister(skl->dmic_dev); 597 } 598 599 static struct skl_clk_parent_src skl_clk_src[] = { 600 { .clk_id = SKL_XTAL, .name = "xtal" }, 601 { .clk_id = SKL_CARDINAL, .name = "cardinal", .rate = 24576000 }, 602 { .clk_id = SKL_PLL, .name = "pll", .rate = 96000000 }, 603 }; 604 605 struct skl_clk_parent_src *skl_get_parent_clk(u8 clk_id) 606 { 607 unsigned int i; 608 609 for (i = 0; i < ARRAY_SIZE(skl_clk_src); i++) { 610 if (skl_clk_src[i].clk_id == clk_id) 611 return &skl_clk_src[i]; 612 } 613 614 return NULL; 615 } 616 617 static void init_skl_xtal_rate(int pci_id) 618 { 619 switch (pci_id) { 620 case 0x9d70: 621 case 0x9d71: 622 skl_clk_src[0].rate = 24000000; 623 return; 624 625 default: 626 skl_clk_src[0].rate = 19200000; 627 return; 628 } 629 } 630 631 static int skl_clock_device_register(struct skl_dev *skl) 632 { 633 struct platform_device_info pdevinfo = {NULL}; 634 struct skl_clk_pdata *clk_pdata; 635 636 if (!skl->nhlt) 637 return 0; 638 639 clk_pdata = devm_kzalloc(&skl->pci->dev, sizeof(*clk_pdata), 640 GFP_KERNEL); 641 if (!clk_pdata) 642 return -ENOMEM; 643 644 init_skl_xtal_rate(skl->pci->device); 645 646 clk_pdata->parent_clks = skl_clk_src; 647 clk_pdata->ssp_clks = skl_ssp_clks; 648 clk_pdata->num_clks = ARRAY_SIZE(skl_ssp_clks); 649 650 /* Query NHLT to fill the rates and parent */ 651 skl_get_clks(skl, clk_pdata->ssp_clks); 652 clk_pdata->pvt_data = skl; 653 654 /* Register Platform device */ 655 pdevinfo.parent = &skl->pci->dev; 656 pdevinfo.id = -1; 657 pdevinfo.name = "skl-ssp-clk"; 658 pdevinfo.data = clk_pdata; 659 pdevinfo.size_data = sizeof(*clk_pdata); 660 skl->clk_dev = platform_device_register_full(&pdevinfo); 661 return PTR_ERR_OR_ZERO(skl->clk_dev); 662 } 663 664 static void skl_clock_device_unregister(struct skl_dev *skl) 665 { 666 if (skl->clk_dev) 667 platform_device_unregister(skl->clk_dev); 668 } 669 670 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) 671 672 #define IDISP_INTEL_VENDOR_ID 0x80860000 673 674 /* 675 * load the legacy codec driver 676 */ 677 static void load_codec_module(struct hda_codec *codec) 678 { 679 #ifdef MODULE 680 char modalias[MODULE_NAME_LEN]; 681 const char *mod = NULL; 682 683 snd_hdac_codec_modalias(&codec->core, modalias, sizeof(modalias)); 684 mod = modalias; 685 dev_dbg(&codec->core.dev, "loading %s codec module\n", mod); 686 request_module(mod); 687 #endif 688 } 689 690 #endif /* CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC */ 691 692 /* 693 * Probe the given codec address 694 */ 695 static int probe_codec(struct hdac_bus *bus, int addr) 696 { 697 unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) | 698 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 699 unsigned int res = -1; 700 struct skl_dev *skl = bus_to_skl(bus); 701 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) 702 struct hdac_hda_priv *hda_codec; 703 int err; 704 #endif 705 struct hdac_device *hdev; 706 707 mutex_lock(&bus->cmd_mutex); 708 snd_hdac_bus_send_cmd(bus, cmd); 709 snd_hdac_bus_get_response(bus, addr, &res); 710 mutex_unlock(&bus->cmd_mutex); 711 if (res == -1) 712 return -EIO; 713 dev_dbg(bus->dev, "codec #%d probed OK: %x\n", addr, res); 714 715 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) 716 hda_codec = devm_kzalloc(&skl->pci->dev, sizeof(*hda_codec), 717 GFP_KERNEL); 718 if (!hda_codec) 719 return -ENOMEM; 720 721 hda_codec->codec.bus = skl_to_hbus(skl); 722 hdev = &hda_codec->codec.core; 723 724 err = snd_hdac_ext_bus_device_init(bus, addr, hdev, HDA_DEV_ASOC); 725 if (err < 0) 726 return err; 727 728 /* use legacy bus only for HDA codecs, idisp uses ext bus */ 729 if ((res & 0xFFFF0000) != IDISP_INTEL_VENDOR_ID) { 730 hdev->type = HDA_DEV_LEGACY; 731 load_codec_module(&hda_codec->codec); 732 } 733 return 0; 734 #else 735 hdev = devm_kzalloc(&skl->pci->dev, sizeof(*hdev), GFP_KERNEL); 736 if (!hdev) 737 return -ENOMEM; 738 739 return snd_hdac_ext_bus_device_init(bus, addr, hdev, HDA_DEV_ASOC); 740 #endif /* CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC */ 741 } 742 743 /* Codec initialization */ 744 static void skl_codec_create(struct hdac_bus *bus) 745 { 746 int c, max_slots; 747 748 max_slots = HDA_MAX_CODECS; 749 750 /* First try to probe all given codec slots */ 751 for (c = 0; c < max_slots; c++) { 752 if ((bus->codec_mask & (1 << c))) { 753 if (probe_codec(bus, c) < 0) { 754 /* 755 * Some BIOSen give you wrong codec addresses 756 * that don't exist 757 */ 758 dev_warn(bus->dev, 759 "Codec #%d probe error; disabling it...\n", c); 760 bus->codec_mask &= ~(1 << c); 761 /* 762 * More badly, accessing to a non-existing 763 * codec often screws up the controller bus, 764 * and disturbs the further communications. 765 * Thus if an error occurs during probing, 766 * better to reset the controller bus to get 767 * back to the sanity state. 768 */ 769 snd_hdac_bus_stop_chip(bus); 770 skl_init_chip(bus, true); 771 } 772 } 773 } 774 } 775 776 static int skl_i915_init(struct hdac_bus *bus) 777 { 778 int err; 779 780 /* 781 * The HDMI codec is in GPU so we need to ensure that it is powered 782 * up and ready for probe 783 */ 784 err = snd_hdac_i915_init(bus); 785 if (err < 0) 786 return err; 787 788 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 789 790 return 0; 791 } 792 793 static void skl_probe_work(struct work_struct *work) 794 { 795 struct skl_dev *skl = container_of(work, struct skl_dev, probe_work); 796 struct hdac_bus *bus = skl_to_bus(skl); 797 struct hdac_ext_link *hlink; 798 int err; 799 800 if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) { 801 err = skl_i915_init(bus); 802 if (err < 0) 803 return; 804 } 805 806 skl_init_pci(skl); 807 skl_dum_set(bus); 808 809 err = skl_init_chip(bus, true); 810 if (err < 0) { 811 dev_err(bus->dev, "Init chip failed with err: %d\n", err); 812 goto out_err; 813 } 814 815 /* codec detection */ 816 if (!bus->codec_mask) 817 dev_info(bus->dev, "no hda codecs found!\n"); 818 819 /* create codec instances */ 820 skl_codec_create(bus); 821 822 /* register platform dai and controls */ 823 err = skl_platform_register(bus->dev); 824 if (err < 0) { 825 dev_err(bus->dev, "platform register failed: %d\n", err); 826 goto out_err; 827 } 828 829 err = skl_machine_device_register(skl); 830 if (err < 0) { 831 dev_err(bus->dev, "machine register failed: %d\n", err); 832 goto out_err; 833 } 834 835 /* 836 * we are done probing so decrement link counts 837 */ 838 list_for_each_entry(hlink, &bus->hlink_list, list) 839 snd_hdac_ext_bus_link_put(bus, hlink); 840 841 if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) 842 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 843 844 /* configure PM */ 845 pm_runtime_put_noidle(bus->dev); 846 pm_runtime_allow(bus->dev); 847 skl->init_done = 1; 848 849 return; 850 851 out_err: 852 if (IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)) 853 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 854 } 855 856 /* 857 * constructor 858 */ 859 static int skl_create(struct pci_dev *pci, 860 struct skl_dev **rskl) 861 { 862 struct hdac_ext_bus_ops *ext_ops = NULL; 863 struct skl_dev *skl; 864 struct hdac_bus *bus; 865 struct hda_bus *hbus; 866 int err; 867 868 *rskl = NULL; 869 870 err = pci_enable_device(pci); 871 if (err < 0) 872 return err; 873 874 skl = devm_kzalloc(&pci->dev, sizeof(*skl), GFP_KERNEL); 875 if (!skl) { 876 pci_disable_device(pci); 877 return -ENOMEM; 878 } 879 880 hbus = skl_to_hbus(skl); 881 bus = skl_to_bus(skl); 882 883 INIT_LIST_HEAD(&skl->ppl_list); 884 INIT_LIST_HEAD(&skl->bind_list); 885 886 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) 887 ext_ops = snd_soc_hdac_hda_get_ops(); 888 #endif 889 snd_hdac_ext_bus_init(bus, &pci->dev, NULL, ext_ops); 890 bus->use_posbuf = 1; 891 skl->pci = pci; 892 INIT_WORK(&skl->probe_work, skl_probe_work); 893 bus->bdl_pos_adj = 0; 894 895 mutex_init(&hbus->prepare_mutex); 896 hbus->pci = pci; 897 hbus->mixer_assigned = -1; 898 hbus->modelname = "sklbus"; 899 900 *rskl = skl; 901 902 return 0; 903 } 904 905 static int skl_first_init(struct hdac_bus *bus) 906 { 907 struct skl_dev *skl = bus_to_skl(bus); 908 struct pci_dev *pci = skl->pci; 909 int err; 910 unsigned short gcap; 911 int cp_streams, pb_streams, start_idx; 912 913 err = pci_request_regions(pci, "Skylake HD audio"); 914 if (err < 0) 915 return err; 916 917 bus->addr = pci_resource_start(pci, 0); 918 bus->remap_addr = pci_ioremap_bar(pci, 0); 919 if (bus->remap_addr == NULL) { 920 dev_err(bus->dev, "ioremap error\n"); 921 return -ENXIO; 922 } 923 924 snd_hdac_bus_parse_capabilities(bus); 925 926 /* check if PPCAP exists */ 927 if (!bus->ppcap) { 928 dev_err(bus->dev, "bus ppcap not set, HDAudio or DSP not present?\n"); 929 return -ENODEV; 930 } 931 932 if (skl_acquire_irq(bus, 0) < 0) 933 return -EBUSY; 934 935 pci_set_master(pci); 936 synchronize_irq(bus->irq); 937 938 gcap = snd_hdac_chip_readw(bus, GCAP); 939 dev_dbg(bus->dev, "chipset global capabilities = 0x%x\n", gcap); 940 941 /* read number of streams from GCAP register */ 942 cp_streams = (gcap >> 8) & 0x0f; 943 pb_streams = (gcap >> 12) & 0x0f; 944 945 if (!pb_streams && !cp_streams) { 946 dev_err(bus->dev, "no streams found in GCAP definitions?\n"); 947 return -EIO; 948 } 949 950 bus->num_streams = cp_streams + pb_streams; 951 952 /* allow 64bit DMA address if supported by H/W */ 953 if (dma_set_mask_and_coherent(bus->dev, DMA_BIT_MASK(64))) 954 dma_set_mask_and_coherent(bus->dev, DMA_BIT_MASK(32)); 955 dma_set_max_seg_size(bus->dev, UINT_MAX); 956 957 /* initialize streams */ 958 snd_hdac_ext_stream_init_all 959 (bus, 0, cp_streams, SNDRV_PCM_STREAM_CAPTURE); 960 start_idx = cp_streams; 961 snd_hdac_ext_stream_init_all 962 (bus, start_idx, pb_streams, SNDRV_PCM_STREAM_PLAYBACK); 963 964 err = snd_hdac_bus_alloc_stream_pages(bus); 965 if (err < 0) 966 return err; 967 968 return 0; 969 } 970 971 static int skl_probe(struct pci_dev *pci, 972 const struct pci_device_id *pci_id) 973 { 974 struct skl_dev *skl; 975 struct hdac_bus *bus = NULL; 976 int err; 977 978 switch (skl_pci_binding) { 979 case SND_SKL_PCI_BIND_AUTO: 980 err = snd_intel_dsp_driver_probe(pci); 981 if (err != SND_INTEL_DSP_DRIVER_ANY && 982 err != SND_INTEL_DSP_DRIVER_SST) 983 return -ENODEV; 984 break; 985 case SND_SKL_PCI_BIND_LEGACY: 986 dev_info(&pci->dev, "Module parameter forced binding with HDAudio legacy, aborting probe\n"); 987 return -ENODEV; 988 case SND_SKL_PCI_BIND_ASOC: 989 dev_info(&pci->dev, "Module parameter forced binding with SKL driver, bypassed detection logic\n"); 990 break; 991 default: 992 dev_err(&pci->dev, "invalid value for skl_pci_binding module parameter, ignored\n"); 993 break; 994 } 995 996 /* we use ext core ops, so provide NULL for ops here */ 997 err = skl_create(pci, &skl); 998 if (err < 0) 999 return err; 1000 1001 bus = skl_to_bus(skl); 1002 1003 err = skl_first_init(bus); 1004 if (err < 0) { 1005 dev_err(bus->dev, "skl_first_init failed with err: %d\n", err); 1006 goto out_free; 1007 } 1008 1009 skl->pci_id = pci->device; 1010 1011 device_disable_async_suspend(bus->dev); 1012 1013 skl->nhlt = intel_nhlt_init(bus->dev); 1014 1015 if (skl->nhlt == NULL) { 1016 #if !IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) 1017 dev_err(bus->dev, "no nhlt info found\n"); 1018 err = -ENODEV; 1019 goto out_free; 1020 #else 1021 dev_warn(bus->dev, "no nhlt info found, continuing to try to enable HDAudio codec\n"); 1022 #endif 1023 } else { 1024 1025 err = skl_nhlt_create_sysfs(skl); 1026 if (err < 0) { 1027 dev_err(bus->dev, "skl_nhlt_create_sysfs failed with err: %d\n", err); 1028 goto out_nhlt_free; 1029 } 1030 1031 skl_nhlt_update_topology_bin(skl); 1032 1033 /* create device for dsp clk */ 1034 err = skl_clock_device_register(skl); 1035 if (err < 0) { 1036 dev_err(bus->dev, "skl_clock_device_register failed with err: %d\n", err); 1037 goto out_clk_free; 1038 } 1039 } 1040 1041 pci_set_drvdata(skl->pci, bus); 1042 1043 1044 err = skl_find_machine(skl, (void *)pci_id->driver_data); 1045 if (err < 0) { 1046 dev_err(bus->dev, "skl_find_machine failed with err: %d\n", err); 1047 goto out_nhlt_free; 1048 } 1049 1050 err = skl_init_dsp(skl); 1051 if (err < 0) { 1052 dev_dbg(bus->dev, "error failed to register dsp\n"); 1053 goto out_nhlt_free; 1054 } 1055 skl->enable_miscbdcge = skl_enable_miscbdcge; 1056 skl->clock_power_gating = skl_clock_power_gating; 1057 1058 if (bus->mlcap) 1059 snd_hdac_ext_bus_get_ml_capabilities(bus); 1060 1061 /* create device for soc dmic */ 1062 err = skl_dmic_device_register(skl); 1063 if (err < 0) { 1064 dev_err(bus->dev, "skl_dmic_device_register failed with err: %d\n", err); 1065 goto out_dsp_free; 1066 } 1067 1068 schedule_work(&skl->probe_work); 1069 1070 return 0; 1071 1072 out_dsp_free: 1073 skl_free_dsp(skl); 1074 out_clk_free: 1075 skl_clock_device_unregister(skl); 1076 out_nhlt_free: 1077 if (skl->nhlt) 1078 intel_nhlt_free(skl->nhlt); 1079 out_free: 1080 skl_free(bus); 1081 1082 return err; 1083 } 1084 1085 static void skl_shutdown(struct pci_dev *pci) 1086 { 1087 struct hdac_bus *bus = pci_get_drvdata(pci); 1088 struct hdac_stream *s; 1089 struct hdac_ext_stream *stream; 1090 struct skl_dev *skl; 1091 1092 if (!bus) 1093 return; 1094 1095 skl = bus_to_skl(bus); 1096 1097 if (!skl->init_done) 1098 return; 1099 1100 snd_hdac_stop_streams_and_chip(bus); 1101 list_for_each_entry(s, &bus->stream_list, list) { 1102 stream = stream_to_hdac_ext_stream(s); 1103 snd_hdac_ext_stream_decouple(bus, stream, false); 1104 } 1105 1106 snd_hdac_bus_stop_chip(bus); 1107 } 1108 1109 static void skl_remove(struct pci_dev *pci) 1110 { 1111 struct hdac_bus *bus = pci_get_drvdata(pci); 1112 struct skl_dev *skl = bus_to_skl(bus); 1113 1114 cancel_work_sync(&skl->probe_work); 1115 1116 pm_runtime_get_noresume(&pci->dev); 1117 1118 /* codec removal, invoke bus_device_remove */ 1119 snd_hdac_ext_bus_device_remove(bus); 1120 1121 skl_platform_unregister(&pci->dev); 1122 skl_free_dsp(skl); 1123 skl_machine_device_unregister(skl); 1124 skl_dmic_device_unregister(skl); 1125 skl_clock_device_unregister(skl); 1126 skl_nhlt_remove_sysfs(skl); 1127 if (skl->nhlt) 1128 intel_nhlt_free(skl->nhlt); 1129 skl_free(bus); 1130 dev_set_drvdata(&pci->dev, NULL); 1131 } 1132 1133 /* PCI IDs */ 1134 static const struct pci_device_id skl_ids[] = { 1135 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKL) 1136 /* Sunrise Point-LP */ 1137 { PCI_DEVICE(0x8086, 0x9d70), 1138 .driver_data = (unsigned long)&snd_soc_acpi_intel_skl_machines}, 1139 #endif 1140 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_APL) 1141 /* BXT-P */ 1142 { PCI_DEVICE(0x8086, 0x5a98), 1143 .driver_data = (unsigned long)&snd_soc_acpi_intel_bxt_machines}, 1144 #endif 1145 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_KBL) 1146 /* KBL */ 1147 { PCI_DEVICE(0x8086, 0x9D71), 1148 .driver_data = (unsigned long)&snd_soc_acpi_intel_kbl_machines}, 1149 #endif 1150 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_GLK) 1151 /* GLK */ 1152 { PCI_DEVICE(0x8086, 0x3198), 1153 .driver_data = (unsigned long)&snd_soc_acpi_intel_glk_machines}, 1154 #endif 1155 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_CNL) 1156 /* CNL */ 1157 { PCI_DEVICE(0x8086, 0x9dc8), 1158 .driver_data = (unsigned long)&snd_soc_acpi_intel_cnl_machines}, 1159 #endif 1160 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_CFL) 1161 /* CFL */ 1162 { PCI_DEVICE(0x8086, 0xa348), 1163 .driver_data = (unsigned long)&snd_soc_acpi_intel_cnl_machines}, 1164 #endif 1165 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_LP) 1166 /* CML-LP */ 1167 { PCI_DEVICE(0x8086, 0x02c8), 1168 .driver_data = (unsigned long)&snd_soc_acpi_intel_cnl_machines}, 1169 #endif 1170 #if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_H) 1171 /* CML-H */ 1172 { PCI_DEVICE(0x8086, 0x06c8), 1173 .driver_data = (unsigned long)&snd_soc_acpi_intel_cnl_machines}, 1174 #endif 1175 { 0, } 1176 }; 1177 MODULE_DEVICE_TABLE(pci, skl_ids); 1178 1179 /* pci_driver definition */ 1180 static struct pci_driver skl_driver = { 1181 .name = KBUILD_MODNAME, 1182 .id_table = skl_ids, 1183 .probe = skl_probe, 1184 .remove = skl_remove, 1185 .shutdown = skl_shutdown, 1186 .driver = { 1187 .pm = &skl_pm, 1188 }, 1189 }; 1190 module_pci_driver(skl_driver); 1191 1192 MODULE_LICENSE("GPL v2"); 1193 MODULE_DESCRIPTION("Intel Skylake ASoC HDA driver"); 1194