sound/pci/hda/hda_intel.c

   1 /*
   2  *
   3  *  hda_intel.c - Implementation of primary alsa driver code base
   4  *                for Intel HD Audio.
   5  *
   6  *  Copyright(c) 2004 Intel Corporation. All rights reserved.
   7  *
   8  *  Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
   9  *                     PeiSen Hou <pshou@realtek.com.tw>
  10  *
  11  *  This program is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the Free
  13  *  Software Foundation; either version 2 of the License, or (at your option)
  14  *  any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  19  *  more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along with
  22  *  this program; if not, write to the Free Software Foundation, Inc., 59
  23  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  *
  25  *  CONTACTS:
  26  *
  27  *  Matt Jared          matt.jared@intel.com
  28  *  Andy Kopp           andy.kopp@intel.com
  29  *  Dan Kogan           dan.d.kogan@intel.com
  30  *
  31  *  CHANGES:
  32  *
  33  *  2004.12.01  Major rewrite by tiwai, merged the work of pshou
  34  *
  35  */
  36
  37 #include <linux/delay.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/kernel.h>
  40 #include <linux/module.h>
  41 #include <linux/dma-mapping.h>
  42 #include <linux/moduleparam.h>
  43 #include <linux/init.h>
  44 #include <linux/slab.h>
  45 #include <linux/pci.h>
  46 #include <linux/mutex.h>
  47 #include <linux/io.h>
  48 #include <linux/pm_runtime.h>
  49 #include <linux/clocksource.h>
  50 #include <linux/time.h>
  51 #include <linux/completion.h>
  52
  53 #ifdef CONFIG_X86
  54 /* for snoop control */
  55 #include <asm/pgtable.h>
  56 #include <asm/set_memory.h>
  57 #include <asm/cpufeature.h>
  58 #endif
  59 #include <sound/core.h>
  60 #include <sound/initval.h>
  61 #include <sound/hdaudio.h>
  62 #include <sound/hda_i915.h>
  63 #include <linux/vgaarb.h>
  64 #include <linux/vga_switcheroo.h>
  65 #include <linux/firmware.h>
  66 #include "hda_codec.h"
  67 #include "hda_controller.h"
  68 #include "hda_intel.h"
  69
  70 #define CREATE_TRACE_POINTS
  71 #include "hda_intel_trace.h"
  72
  73 /* position fix mode */
  74 enum {
  75         POS_FIX_AUTO,
  76         POS_FIX_LPIB,
  77         POS_FIX_POSBUF,
  78         POS_FIX_VIACOMBO,
  79         POS_FIX_COMBO,
  80         POS_FIX_SKL,
  81 };
  82
  83 /* Defines for ATI HD Audio support in SB450 south bridge */
  84 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
  85 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
  86
  87 /* Defines for Nvidia HDA support */
  88 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
  89 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
  90 #define NVIDIA_HDA_ISTRM_COH          0x4d
  91 #define NVIDIA_HDA_OSTRM_COH          0x4c
  92 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
  93
  94 /* Defines for Intel SCH HDA snoop control */
  95 #define INTEL_HDA_CGCTL  0x48
  96 #define INTEL_HDA_CGCTL_MISCBDCGE        (0x1 << 6)
  97 #define INTEL_SCH_HDA_DEVC      0x78
  98 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
  99
 100 /* Define IN stream 0 FIFO size offset in VIA controller */
 101 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET 0x90
 102 /* Define VIA HD Audio Device ID*/
 103 #define VIA_HDAC_DEVICE_ID              0x3288
 104
 105 /* max number of SDs */
 106 /* ICH, ATI and VIA have 4 playback and 4 capture */
 107 #define ICH6_NUM_CAPTURE        4
 108 #define ICH6_NUM_PLAYBACK       4
 109
 110 /* ULI has 6 playback and 5 capture */
 111 #define ULI_NUM_CAPTURE         5
 112 #define ULI_NUM_PLAYBACK        6
 113
 114 /* ATI HDMI may have up to 8 playbacks and 0 capture */
 115 #define ATIHDMI_NUM_CAPTURE     0
 116 #define ATIHDMI_NUM_PLAYBACK    8
 117
 118 /* TERA has 4 playback and 3 capture */
 119 #define TERA_NUM_CAPTURE        3
 120 #define TERA_NUM_PLAYBACK       4
 121
 122
 123 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 124 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 125 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 126 static char *model[SNDRV_CARDS];
 127 static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 128 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 129 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
 130 static int probe_only[SNDRV_CARDS];
 131 static int jackpoll_ms[SNDRV_CARDS];
 132 static int single_cmd = -1;
 133 static int enable_msi = -1;
 134 #ifdef CONFIG_SND_HDA_PATCH_LOADER
 135 static char *patch[SNDRV_CARDS];
 136 #endif
 137 #ifdef CONFIG_SND_HDA_INPUT_BEEP
 138 static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
 139                                         CONFIG_SND_HDA_INPUT_BEEP_MODE};
 140 #endif
 141
 142 module_param_array(index, int, NULL, 0444);
 143 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
 144 module_param_array(id, charp, NULL, 0444);
 145 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
 146 module_param_array(enable, bool, NULL, 0444);
 147 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
 148 module_param_array(model, charp, NULL, 0444);
 149 MODULE_PARM_DESC(model, "Use the given board model.");
 150 module_param_array(position_fix, int, NULL, 0444);
 151 MODULE_PARM_DESC(position_fix, "DMA pointer read method."
 152                  "(-1 = system default, 0 = auto, 1 = LPIB, 2 = POSBUF, 3 = VIACOMBO, 4 = COMBO, 5 = SKL+).");
 153 module_param_array(bdl_pos_adj, int, NULL, 0644);
 154 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
 155 module_param_array(probe_mask, int, NULL, 0444);
 156 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
 157 module_param_array(probe_only, int, NULL, 0444);
 158 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
 159 module_param_array(jackpoll_ms, int, NULL, 0444);
 160 MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)");
 161 module_param(single_cmd, bint, 0444);
 162 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
 163                  "(for debugging only).");
 164 module_param(enable_msi, bint, 0444);
 165 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
 166 #ifdef CONFIG_SND_HDA_PATCH_LOADER
 167 module_param_array(patch, charp, NULL, 0444);
 168 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
 169 #endif
 170 #ifdef CONFIG_SND_HDA_INPUT_BEEP
 171 module_param_array(beep_mode, bool, NULL, 0444);
 172 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
 173                             "(0=off, 1=on) (default=1).");
 174 #endif
 175
 176 #ifdef CONFIG_PM
 177 static int param_set_xint(const char *val, const struct kernel_param *kp);
 178 static const struct kernel_param_ops param_ops_xint = {
 179         .set = param_set_xint,
 180         .get = param_get_int,
 181 };
 182 #define param_check_xint param_check_int
 183
 184 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
 185 module_param(power_save, xint, 0644);
 186 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
 187                  "(in second, 0 = disable).");
 188
 189 static bool pm_blacklist = true;
 190 module_param(pm_blacklist, bool, 0644);
 191 MODULE_PARM_DESC(pm_blacklist, "Enable power-management blacklist");
 192
 193 /* reset the HD-audio controller in power save mode.
 194  * this may give more power-saving, but will take longer time to
 195  * wake up.
 196  */
 197 static bool power_save_controller = 1;
 198 module_param(power_save_controller, bool, 0644);
 199 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
 200 #else
 201 #define power_save      0
 202 #endif /* CONFIG_PM */
 203
 204 static int align_buffer_size = -1;
 205 module_param(align_buffer_size, bint, 0644);
 206 MODULE_PARM_DESC(align_buffer_size,
 207                 "Force buffer and period sizes to be multiple of 128 bytes.");
 208
 209 #ifdef CONFIG_X86
 210 static int hda_snoop = -1;
 211 module_param_named(snoop, hda_snoop, bint, 0444);
 212 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
 213 #else
 214 #define hda_snoop               true
 215 #endif
 216
 217
 218 MODULE_LICENSE("GPL");
 219 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
 220                          "{Intel, ICH6M},"
 221                          "{Intel, ICH7},"
 222                          "{Intel, ESB2},"
 223                          "{Intel, ICH8},"
 224                          "{Intel, ICH9},"
 225                          "{Intel, ICH10},"
 226                          "{Intel, PCH},"
 227                          "{Intel, CPT},"
 228                          "{Intel, PPT},"
 229                          "{Intel, LPT},"
 230                          "{Intel, LPT_LP},"
 231                          "{Intel, WPT_LP},"
 232                          "{Intel, SPT},"
 233                          "{Intel, SPT_LP},"
 234                          "{Intel, HPT},"
 235                          "{Intel, PBG},"
 236                          "{Intel, SCH},"
 237                          "{ATI, SB450},"
 238                          "{ATI, SB600},"
 239                          "{ATI, RS600},"
 240                          "{ATI, RS690},"
 241                          "{ATI, RS780},"
 242                          "{ATI, R600},"
 243                          "{ATI, RV630},"
 244                          "{ATI, RV610},"
 245                          "{ATI, RV670},"
 246                          "{ATI, RV635},"
 247                          "{ATI, RV620},"
 248                          "{ATI, RV770},"
 249                          "{VIA, VT8251},"
 250                          "{VIA, VT8237A},"
 251                          "{SiS, SIS966},"
 252                          "{ULI, M5461}}");
 253 MODULE_DESCRIPTION("Intel HDA driver");
 254
 255 #if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
 256 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI)
 257 #define SUPPORT_VGA_SWITCHEROO
 258 #endif
 259 #endif
 260
 261
 262 /*
 263  */
 264
 265 /* driver types */
 266 enum {
 267         AZX_DRIVER_ICH,
 268         AZX_DRIVER_PCH,
 269         AZX_DRIVER_SCH,
 270         AZX_DRIVER_SKL,
 271         AZX_DRIVER_HDMI,
 272         AZX_DRIVER_ATI,
 273         AZX_DRIVER_ATIHDMI,
 274         AZX_DRIVER_ATIHDMI_NS,
 275         AZX_DRIVER_VIA,
 276         AZX_DRIVER_SIS,
 277         AZX_DRIVER_ULI,
 278         AZX_DRIVER_NVIDIA,
 279         AZX_DRIVER_TERA,
 280         AZX_DRIVER_CTX,
 281         AZX_DRIVER_CTHDA,
 282         AZX_DRIVER_CMEDIA,
 283         AZX_DRIVER_GENERIC,
 284         AZX_NUM_DRIVERS, /* keep this as last entry */
 285 };
 286
 287 #define azx_get_snoop_type(chip) \
 288         (((chip)->driver_caps & AZX_DCAPS_SNOOP_MASK) >> 10)
 289 #define AZX_DCAPS_SNOOP_TYPE(type) ((AZX_SNOOP_TYPE_ ## type) << 10)
 290
 291 /* quirks for old Intel chipsets */
 292 #define AZX_DCAPS_INTEL_ICH \
 293         (AZX_DCAPS_OLD_SSYNC | AZX_DCAPS_NO_ALIGN_BUFSIZE)
 294
 295 /* quirks for Intel PCH */
 296 #define AZX_DCAPS_INTEL_PCH_BASE \
 297         (AZX_DCAPS_NO_ALIGN_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY |\
 298          AZX_DCAPS_SNOOP_TYPE(SCH))
 299
 300 /* PCH up to IVB; no runtime PM; bind with i915 gfx */
 301 #define AZX_DCAPS_INTEL_PCH_NOPM \
 302         (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT)
 303
 304 /* PCH for HSW/BDW; with runtime PM */
 305 /* no i915 binding for this as HSW/BDW has another controller for HDMI */
 306 #define AZX_DCAPS_INTEL_PCH \
 307         (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME)
 308
 309 /* HSW HDMI */
 310 #define AZX_DCAPS_INTEL_HASWELL \
 311         (/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_COUNT_LPIB_DELAY |\
 312          AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
 313          AZX_DCAPS_I915_POWERWELL | AZX_DCAPS_SNOOP_TYPE(SCH))
 314
 315 /* Broadwell HDMI can't use position buffer reliably, force to use LPIB */
 316 #define AZX_DCAPS_INTEL_BROADWELL \
 317         (/*AZX_DCAPS_ALIGN_BUFSIZE |*/ AZX_DCAPS_POSFIX_LPIB |\
 318          AZX_DCAPS_PM_RUNTIME | AZX_DCAPS_I915_COMPONENT |\
 319          AZX_DCAPS_I915_POWERWELL | AZX_DCAPS_SNOOP_TYPE(SCH))
 320
 321 #define AZX_DCAPS_INTEL_BAYTRAIL \
 322         (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_I915_COMPONENT |\
 323          AZX_DCAPS_I915_POWERWELL)
 324
 325 #define AZX_DCAPS_INTEL_BRASWELL \
 326         (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
 327          AZX_DCAPS_I915_COMPONENT | AZX_DCAPS_I915_POWERWELL)
 328
 329 #define AZX_DCAPS_INTEL_SKYLAKE \
 330         (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
 331          AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT |\
 332          AZX_DCAPS_I915_POWERWELL)
 333
 334 #define AZX_DCAPS_INTEL_BROXTON \
 335         (AZX_DCAPS_INTEL_PCH_BASE | AZX_DCAPS_PM_RUNTIME |\
 336          AZX_DCAPS_SEPARATE_STREAM_TAG | AZX_DCAPS_I915_COMPONENT |\
 337          AZX_DCAPS_I915_POWERWELL)
 338
 339 /* quirks for ATI SB / AMD Hudson */
 340 #define AZX_DCAPS_PRESET_ATI_SB \
 341         (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB |\
 342          AZX_DCAPS_SNOOP_TYPE(ATI))
 343
 344 /* quirks for ATI/AMD HDMI */
 345 #define AZX_DCAPS_PRESET_ATI_HDMI \
 346         (AZX_DCAPS_NO_TCSEL | AZX_DCAPS_SYNC_WRITE | AZX_DCAPS_POSFIX_LPIB|\
 347          AZX_DCAPS_NO_MSI64)
 348
 349 /* quirks for ATI HDMI with snoop off */
 350 #define AZX_DCAPS_PRESET_ATI_HDMI_NS \
 351         (AZX_DCAPS_PRESET_ATI_HDMI | AZX_DCAPS_SNOOP_OFF)
 352
 353 /* quirks for Nvidia */
 354 #define AZX_DCAPS_PRESET_NVIDIA \
 355         (AZX_DCAPS_NO_MSI | AZX_DCAPS_CORBRP_SELF_CLEAR |\
 356          AZX_DCAPS_SNOOP_TYPE(NVIDIA))
 357
 358 #define AZX_DCAPS_PRESET_CTHDA \
 359         (AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB |\
 360          AZX_DCAPS_NO_64BIT |\
 361          AZX_DCAPS_4K_BDLE_BOUNDARY | AZX_DCAPS_SNOOP_OFF)
 362
 363 /*
 364  * vga_switcheroo support
 365  */
 366 #ifdef SUPPORT_VGA_SWITCHEROO
 367 #define use_vga_switcheroo(chip)        ((chip)->use_vga_switcheroo)
 368 #else
 369 #define use_vga_switcheroo(chip)        0
 370 #endif
 371
 372 #define CONTROLLER_IN_GPU(pci) (((pci)->device == 0x0a0c) || \
 373                                         ((pci)->device == 0x0c0c) || \
 374                                         ((pci)->device == 0x0d0c) || \
 375                                         ((pci)->device == 0x160c))
 376
 377 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
 378
 379 static char *driver_short_names[] = {
 380         [AZX_DRIVER_ICH] = "HDA Intel",
 381         [AZX_DRIVER_PCH] = "HDA Intel PCH",
 382         [AZX_DRIVER_SCH] = "HDA Intel MID",
 383         [AZX_DRIVER_SKL] = "HDA Intel PCH", /* kept old name for compatibility */
 384         [AZX_DRIVER_HDMI] = "HDA Intel HDMI",
 385         [AZX_DRIVER_ATI] = "HDA ATI SB",
 386         [AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
 387         [AZX_DRIVER_ATIHDMI_NS] = "HDA ATI HDMI",
 388         [AZX_DRIVER_VIA] = "HDA VIA VT82xx",
 389         [AZX_DRIVER_SIS] = "HDA SIS966",
 390         [AZX_DRIVER_ULI] = "HDA ULI M5461",
 391         [AZX_DRIVER_NVIDIA] = "HDA NVidia",
 392         [AZX_DRIVER_TERA] = "HDA Teradici",
 393         [AZX_DRIVER_CTX] = "HDA Creative",
 394         [AZX_DRIVER_CTHDA] = "HDA Creative",
 395         [AZX_DRIVER_CMEDIA] = "HDA C-Media",
 396         [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
 397 };
 398
 399 #ifdef CONFIG_X86
 400 static void __mark_pages_wc(struct azx *chip, struct snd_dma_buffer *dmab, bool on)
 401 {
 402         int pages;
 403
 404         if (azx_snoop(chip))
 405                 return;
 406         if (!dmab || !dmab->area || !dmab->bytes)
 407                 return;
 408
 409 #ifdef CONFIG_SND_DMA_SGBUF
 410         if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG) {
 411                 struct snd_sg_buf *sgbuf = dmab->private_data;
 412                 if (chip->driver_type == AZX_DRIVER_CMEDIA)
 413                         return; /* deal with only CORB/RIRB buffers */
 414                 if (on)
 415                         set_pages_array_wc(sgbuf->page_table, sgbuf->pages);
 416                 else
 417                         set_pages_array_wb(sgbuf->page_table, sgbuf->pages);
 418                 return;
 419         }
 420 #endif
 421
 422         pages = (dmab->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
 423         if (on)
 424                 set_memory_wc((unsigned long)dmab->area, pages);
 425         else
 426                 set_memory_wb((unsigned long)dmab->area, pages);
 427 }
 428
 429 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
 430                                  bool on)
 431 {
 432         __mark_pages_wc(chip, buf, on);
 433 }
 434 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
 435                                    struct snd_pcm_substream *substream, bool on)
 436 {
 437         if (azx_dev->wc_marked != on) {
 438                 __mark_pages_wc(chip, snd_pcm_get_dma_buf(substream), on);
 439                 azx_dev->wc_marked = on;
 440         }
 441 }
 442 #else
 443 /* NOP for other archs */
 444 static inline void mark_pages_wc(struct azx *chip, struct snd_dma_buffer *buf,
 445                                  bool on)
 446 {
 447 }
 448 static inline void mark_runtime_wc(struct azx *chip, struct azx_dev *azx_dev,
 449                                    struct snd_pcm_substream *substream, bool on)
 450 {
 451 }
 452 #endif
 453
 454 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
 455
 456 /*
 457  * initialize the PCI registers
 458  */
 459 /* update bits in a PCI register byte */
 460 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
 461                             unsigned char mask, unsigned char val)
 462 {
 463         unsigned char data;
 464
 465         pci_read_config_byte(pci, reg, &data);
 466         data &= ~mask;
 467         data |= (val & mask);
 468         pci_write_config_byte(pci, reg, data);
 469 }
 470
 471 static void azx_init_pci(struct azx *chip)
 472 {
 473         int snoop_type = azx_get_snoop_type(chip);
 474
 475         /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
 476          * TCSEL == Traffic Class Select Register, which sets PCI express QOS
 477          * Ensuring these bits are 0 clears playback static on some HD Audio
 478          * codecs.
 479          * The PCI register TCSEL is defined in the Intel manuals.
 480          */
 481         if (!(chip->driver_caps & AZX_DCAPS_NO_TCSEL)) {
 482                 dev_dbg(chip->card->dev, "Clearing TCSEL\n");
 483                 update_pci_byte(chip->pci, AZX_PCIREG_TCSEL, 0x07, 0);
 484         }
 485
 486         /* For ATI SB450/600/700/800/900 and AMD Hudson azalia HD audio,
 487          * we need to enable snoop.
 488          */
 489         if (snoop_type == AZX_SNOOP_TYPE_ATI) {
 490                 dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",
 491                         azx_snoop(chip));
 492                 update_pci_byte(chip->pci,
 493                                 ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 0x07,
 494                                 azx_snoop(chip) ? ATI_SB450_HDAUDIO_ENABLE_SNOOP : 0);
 495         }
 496
 497         /* For NVIDIA HDA, enable snoop */
 498         if (snoop_type == AZX_SNOOP_TYPE_NVIDIA) {
 499                 dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",
 500                         azx_snoop(chip));
 501                 update_pci_byte(chip->pci,
 502                                 NVIDIA_HDA_TRANSREG_ADDR,
 503                                 0x0f, NVIDIA_HDA_ENABLE_COHBITS);
 504                 update_pci_byte(chip->pci,
 505                                 NVIDIA_HDA_ISTRM_COH,
 506                                 0x01, NVIDIA_HDA_ENABLE_COHBIT);
 507                 update_pci_byte(chip->pci,
 508                                 NVIDIA_HDA_OSTRM_COH,
 509                                 0x01, NVIDIA_HDA_ENABLE_COHBIT);
 510         }
 511
 512         /* Enable SCH/PCH snoop if needed */
 513         if (snoop_type == AZX_SNOOP_TYPE_SCH) {
 514                 unsigned short snoop;
 515                 pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
 516                 if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||
 517                     (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {
 518                         snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;
 519                         if (!azx_snoop(chip))
 520                                 snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;
 521                         pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);
 522                         pci_read_config_word(chip->pci,
 523                                 INTEL_SCH_HDA_DEVC, &snoop);
 524                 }
 525                 dev_dbg(chip->card->dev, "SCH snoop: %s\n",
 526                         (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?
 527                         "Disabled" : "Enabled");
 528         }
 529 }
 530
 531 /*
 532  * In BXT-P A0, HD-Audio DMA requests is later than expected,
 533  * and makes an audio stream sensitive to system latencies when
 534  * 24/32 bits are playing.
 535  * Adjusting threshold of DMA fifo to force the DMA request
 536  * sooner to improve latency tolerance at the expense of power.
 537  */
 538 static void bxt_reduce_dma_latency(struct azx *chip)
 539 {
 540         u32 val;
 541
 542         val = azx_readl(chip, VS_EM4L);
 543         val &= (0x3 << 20);
 544         azx_writel(chip, VS_EM4L, val);
 545 }
 546
 547 /*
 548  * ML_LCAP bits:
 549  *  bit 0: 6 MHz Supported
 550  *  bit 1: 12 MHz Supported
 551  *  bit 2: 24 MHz Supported
 552  *  bit 3: 48 MHz Supported
 553  *  bit 4: 96 MHz Supported
 554  *  bit 5: 192 MHz Supported
 555  */
 556 static int intel_get_lctl_scf(struct azx *chip)
 557 {
 558         struct hdac_bus *bus = azx_bus(chip);
 559         static int preferred_bits[] = { 2, 3, 1, 4, 5 };
 560         u32 val, t;
 561         int i;
 562
 563         val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCAP);
 564
 565         for (i = 0; i < ARRAY_SIZE(preferred_bits); i++) {
 566                 t = preferred_bits[i];
 567                 if (val & (1 << t))
 568                         return t;
 569         }
 570
 571         dev_warn(chip->card->dev, "set audio clock frequency to 6MHz");
 572         return 0;
 573 }
 574
 575 static int intel_ml_lctl_set_power(struct azx *chip, int state)
 576 {
 577         struct hdac_bus *bus = azx_bus(chip);
 578         u32 val;
 579         int timeout;
 580
 581         /*
 582          * the codecs are sharing the first link setting by default
 583          * If other links are enabled for stream, they need similar fix
 584          */
 585         val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 586         val &= ~AZX_MLCTL_SPA;
 587         val |= state << AZX_MLCTL_SPA_SHIFT;
 588         writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 589         /* wait for CPA */
 590         timeout = 50;
 591         while (timeout) {
 592                 if (((readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL)) &
 593                     AZX_MLCTL_CPA) == (state << AZX_MLCTL_CPA_SHIFT))
 594                         return 0;
 595                 timeout--;
 596                 udelay(10);
 597         }
 598
 599         return -1;
 600 }
 601
 602 static void intel_init_lctl(struct azx *chip)
 603 {
 604         struct hdac_bus *bus = azx_bus(chip);
 605         u32 val;
 606         int ret;
 607
 608         /* 0. check lctl register value is correct or not */
 609         val = readl(bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 610         /* if SCF is already set, let's use it */
 611         if ((val & ML_LCTL_SCF_MASK) != 0)
 612                 return;
 613
 614         /*
 615          * Before operating on SPA, CPA must match SPA.
 616          * Any deviation may result in undefined behavior.
 617          */
 618         if (((val & AZX_MLCTL_SPA) >> AZX_MLCTL_SPA_SHIFT) !=
 619                 ((val & AZX_MLCTL_CPA) >> AZX_MLCTL_CPA_SHIFT))
 620                 return;
 621
 622         /* 1. turn link down: set SPA to 0 and wait CPA to 0 */
 623         ret = intel_ml_lctl_set_power(chip, 0);
 624         udelay(100);
 625         if (ret)
 626                 goto set_spa;
 627
 628         /* 2. update SCF to select a properly audio clock*/
 629         val &= ~ML_LCTL_SCF_MASK;
 630         val |= intel_get_lctl_scf(chip);
 631         writel(val, bus->mlcap + AZX_ML_BASE + AZX_REG_ML_LCTL);
 632
 633 set_spa:
 634         /* 4. turn link up: set SPA to 1 and wait CPA to 1 */
 635         intel_ml_lctl_set_power(chip, 1);
 636         udelay(100);
 637 }
 638
 639 static void hda_intel_init_chip(struct azx *chip, bool full_reset)
 640 {
 641         struct hdac_bus *bus = azx_bus(chip);
 642         struct pci_dev *pci = chip->pci;
 643         u32 val;
 644
 645         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
 646                 snd_hdac_set_codec_wakeup(bus, true);
 647         if (chip->driver_type == AZX_DRIVER_SKL) {
 648                 pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
 649                 val = val & ~INTEL_HDA_CGCTL_MISCBDCGE;
 650                 pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
 651         }
 652         azx_init_chip(chip, full_reset);
 653         if (chip->driver_type == AZX_DRIVER_SKL) {
 654                 pci_read_config_dword(pci, INTEL_HDA_CGCTL, &val);
 655                 val = val | INTEL_HDA_CGCTL_MISCBDCGE;
 656                 pci_write_config_dword(pci, INTEL_HDA_CGCTL, val);
 657         }
 658         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
 659                 snd_hdac_set_codec_wakeup(bus, false);
 660
 661         /* reduce dma latency to avoid noise */
 662         if (IS_BXT(pci))
 663                 bxt_reduce_dma_latency(chip);
 664
 665         if (bus->mlcap != NULL)
 666                 intel_init_lctl(chip);
 667 }
 668
 669 /* calculate runtime delay from LPIB */
 670 static int azx_get_delay_from_lpib(struct azx *chip, struct azx_dev *azx_dev,
 671                                    unsigned int pos)
 672 {
 673         struct snd_pcm_substream *substream = azx_dev->core.substream;
 674         int stream = substream->stream;
 675         unsigned int lpib_pos = azx_get_pos_lpib(chip, azx_dev);
 676         int delay;
 677
 678         if (stream == SNDRV_PCM_STREAM_PLAYBACK)
 679                 delay = pos - lpib_pos;
 680         else
 681                 delay = lpib_pos - pos;
 682         if (delay < 0) {
 683                 if (delay >= azx_dev->core.delay_negative_threshold)
 684                         delay = 0;
 685                 else
 686                         delay += azx_dev->core.bufsize;
 687         }
 688
 689         if (delay >= azx_dev->core.period_bytes) {
 690                 dev_info(chip->card->dev,
 691                          "Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
 692                          delay, azx_dev->core.period_bytes);
 693                 delay = 0;
 694                 chip->driver_caps &= ~AZX_DCAPS_COUNT_LPIB_DELAY;
 695                 chip->get_delay[stream] = NULL;
 696         }
 697
 698         return bytes_to_frames(substream->runtime, delay);
 699 }
 700
 701 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
 702
 703 /* called from IRQ */
 704 static int azx_position_check(struct azx *chip, struct azx_dev *azx_dev)
 705 {
 706         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 707         int ok;
 708
 709         ok = azx_position_ok(chip, azx_dev);
 710         if (ok == 1) {
 711                 azx_dev->irq_pending = 0;
 712                 return ok;
 713         } else if (ok == 0) {
 714                 /* bogus IRQ, process it later */
 715                 azx_dev->irq_pending = 1;
 716                 schedule_work(&hda->irq_pending_work);
 717         }
 718         return 0;
 719 }
 720
 721 /* Enable/disable i915 display power for the link */
 722 static int azx_intel_link_power(struct azx *chip, bool enable)
 723 {
 724         struct hdac_bus *bus = azx_bus(chip);
 725
 726         return snd_hdac_display_power(bus, enable);
 727 }
 728
 729 /*
 730  * Check whether the current DMA position is acceptable for updating
 731  * periods.  Returns non-zero if it's OK.
 732  *
 733  * Many HD-audio controllers appear pretty inaccurate about
 734  * the update-IRQ timing.  The IRQ is issued before actually the
 735  * data is processed.  So, we need to process it afterwords in a
 736  * workqueue.
 737  */
 738 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
 739 {
 740         struct snd_pcm_substream *substream = azx_dev->core.substream;
 741         int stream = substream->stream;
 742         u32 wallclk;
 743         unsigned int pos;
 744
 745         wallclk = azx_readl(chip, WALLCLK) - azx_dev->core.start_wallclk;
 746         if (wallclk < (azx_dev->core.period_wallclk * 2) / 3)
 747                 return -1;      /* bogus (too early) interrupt */
 748
 749         if (chip->get_position[stream])
 750                 pos = chip->get_position[stream](chip, azx_dev);
 751         else { /* use the position buffer as default */
 752                 pos = azx_get_pos_posbuf(chip, azx_dev);
 753                 if (!pos || pos == (u32)-1) {
 754                         dev_info(chip->card->dev,
 755                                  "Invalid position buffer, using LPIB read method instead.\n");
 756                         chip->get_position[stream] = azx_get_pos_lpib;
 757                         if (chip->get_position[0] == azx_get_pos_lpib &&
 758                             chip->get_position[1] == azx_get_pos_lpib)
 759                                 azx_bus(chip)->use_posbuf = false;
 760                         pos = azx_get_pos_lpib(chip, azx_dev);
 761                         chip->get_delay[stream] = NULL;
 762                 } else {
 763                         chip->get_position[stream] = azx_get_pos_posbuf;
 764                         if (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)
 765                                 chip->get_delay[stream] = azx_get_delay_from_lpib;
 766                 }
 767         }
 768
 769         if (pos >= azx_dev->core.bufsize)
 770                 pos = 0;
 771
 772         if (WARN_ONCE(!azx_dev->core.period_bytes,
 773                       "hda-intel: zero azx_dev->period_bytes"))
 774                 return -1; /* this shouldn't happen! */
 775         if (wallclk < (azx_dev->core.period_wallclk * 5) / 4 &&
 776             pos % azx_dev->core.period_bytes > azx_dev->core.period_bytes / 2)
 777                 /* NG - it's below the first next period boundary */
 778                 return chip->bdl_pos_adj ? 0 : -1;
 779         azx_dev->core.start_wallclk += wallclk;
 780         return 1; /* OK, it's fine */
 781 }
 782
 783 /*
 784  * The work for pending PCM period updates.
 785  */
 786 static void azx_irq_pending_work(struct work_struct *work)
 787 {
 788         struct hda_intel *hda = container_of(work, struct hda_intel, irq_pending_work);
 789         struct azx *chip = &hda->chip;
 790         struct hdac_bus *bus = azx_bus(chip);
 791         struct hdac_stream *s;
 792         int pending, ok;
 793
 794         if (!hda->irq_pending_warned) {
 795                 dev_info(chip->card->dev,
 796                          "IRQ timing workaround is activated for card #%d. Suggest a bigger bdl_pos_adj.\n",
 797                          chip->card->number);
 798                 hda->irq_pending_warned = 1;
 799         }
 800
 801         for (;;) {
 802                 pending = 0;
 803                 spin_lock_irq(&bus->reg_lock);
 804                 list_for_each_entry(s, &bus->stream_list, list) {
 805                         struct azx_dev *azx_dev = stream_to_azx_dev(s);
 806                         if (!azx_dev->irq_pending ||
 807                             !s->substream ||
 808                             !s->running)
 809                                 continue;
 810                         ok = azx_position_ok(chip, azx_dev);
 811                         if (ok > 0) {
 812                                 azx_dev->irq_pending = 0;
 813                                 spin_unlock(&bus->reg_lock);
 814                                 snd_pcm_period_elapsed(s->substream);
 815                                 spin_lock(&bus->reg_lock);
 816                         } else if (ok < 0) {
 817                                 pending = 0;    /* too early */
 818                         } else
 819                                 pending++;
 820                 }
 821                 spin_unlock_irq(&bus->reg_lock);
 822                 if (!pending)
 823                         return;
 824                 msleep(1);
 825         }
 826 }
 827
 828 /* clear irq_pending flags and assure no on-going workq */
 829 static void azx_clear_irq_pending(struct azx *chip)
 830 {
 831         struct hdac_bus *bus = azx_bus(chip);
 832         struct hdac_stream *s;
 833
 834         spin_lock_irq(&bus->reg_lock);
 835         list_for_each_entry(s, &bus->stream_list, list) {
 836                 struct azx_dev *azx_dev = stream_to_azx_dev(s);
 837                 azx_dev->irq_pending = 0;
 838         }
 839         spin_unlock_irq(&bus->reg_lock);
 840 }
 841
 842 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
 843 {
 844         struct hdac_bus *bus = azx_bus(chip);
 845
 846         if (request_irq(chip->pci->irq, azx_interrupt,
 847                         chip->msi ? 0 : IRQF_SHARED,
 848                         chip->card->irq_descr, chip)) {
 849                 dev_err(chip->card->dev,
 850                         "unable to grab IRQ %d, disabling device\n",
 851                         chip->pci->irq);
 852                 if (do_disconnect)
 853                         snd_card_disconnect(chip->card);
 854                 return -1;
 855         }
 856         bus->irq = chip->pci->irq;
 857         pci_intx(chip->pci, !chip->msi);
 858         return 0;
 859 }
 860
 861 /* get the current DMA position with correction on VIA chips */
 862 static unsigned int azx_via_get_position(struct azx *chip,
 863                                          struct azx_dev *azx_dev)
 864 {
 865         unsigned int link_pos, mini_pos, bound_pos;
 866         unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
 867         unsigned int fifo_size;
 868
 869         link_pos = snd_hdac_stream_get_pos_lpib(azx_stream(azx_dev));
 870         if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 871                 /* Playback, no problem using link position */
 872                 return link_pos;
 873         }
 874
 875         /* Capture */
 876         /* For new chipset,
 877          * use mod to get the DMA position just like old chipset
 878          */
 879         mod_dma_pos = le32_to_cpu(*azx_dev->core.posbuf);
 880         mod_dma_pos %= azx_dev->core.period_bytes;
 881
 882         /* azx_dev->fifo_size can't get FIFO size of in stream.
 883          * Get from base address + offset.
 884          */
 885         fifo_size = readw(azx_bus(chip)->remap_addr +
 886                           VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
 887
 888         if (azx_dev->insufficient) {
 889                 /* Link position never gather than FIFO size */
 890                 if (link_pos <= fifo_size)
 891                         return 0;
 892
 893                 azx_dev->insufficient = 0;
 894         }
 895
 896         if (link_pos <= fifo_size)
 897                 mini_pos = azx_dev->core.bufsize + link_pos - fifo_size;
 898         else
 899                 mini_pos = link_pos - fifo_size;
 900
 901         /* Find nearest previous boudary */
 902         mod_mini_pos = mini_pos % azx_dev->core.period_bytes;
 903         mod_link_pos = link_pos % azx_dev->core.period_bytes;
 904         if (mod_link_pos >= fifo_size)
 905                 bound_pos = link_pos - mod_link_pos;
 906         else if (mod_dma_pos >= mod_mini_pos)
 907                 bound_pos = mini_pos - mod_mini_pos;
 908         else {
 909                 bound_pos = mini_pos - mod_mini_pos + azx_dev->core.period_bytes;
 910                 if (bound_pos >= azx_dev->core.bufsize)
 911                         bound_pos = 0;
 912         }
 913
 914         /* Calculate real DMA position we want */
 915         return bound_pos + mod_dma_pos;
 916 }
 917
 918 static unsigned int azx_skl_get_dpib_pos(struct azx *chip,
 919                                          struct azx_dev *azx_dev)
 920 {
 921         return _snd_hdac_chip_readl(azx_bus(chip),
 922                                     AZX_REG_VS_SDXDPIB_XBASE +
 923                                     (AZX_REG_VS_SDXDPIB_XINTERVAL *
 924                                      azx_dev->core.index));
 925 }
 926
 927 /* get the current DMA position with correction on SKL+ chips */
 928 static unsigned int azx_get_pos_skl(struct azx *chip, struct azx_dev *azx_dev)
 929 {
 930         /* DPIB register gives a more accurate position for playback */
 931         if (azx_dev->core.substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 932                 return azx_skl_get_dpib_pos(chip, azx_dev);
 933
 934         /* For capture, we need to read posbuf, but it requires a delay
 935          * for the possible boundary overlap; the read of DPIB fetches the
 936          * actual posbuf
 937          */
 938         udelay(20);
 939         azx_skl_get_dpib_pos(chip, azx_dev);
 940         return azx_get_pos_posbuf(chip, azx_dev);
 941 }
 942
 943 #ifdef CONFIG_PM
 944 static DEFINE_MUTEX(card_list_lock);
 945 static LIST_HEAD(card_list);
 946
 947 static void azx_add_card_list(struct azx *chip)
 948 {
 949         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 950         mutex_lock(&card_list_lock);
 951         list_add(&hda->list, &card_list);
 952         mutex_unlock(&card_list_lock);
 953 }
 954
 955 static void azx_del_card_list(struct azx *chip)
 956 {
 957         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
 958         mutex_lock(&card_list_lock);
 959         list_del_init(&hda->list);
 960         mutex_unlock(&card_list_lock);
 961 }
 962
 963 /* trigger power-save check at writing parameter */
 964 static int param_set_xint(const char *val, const struct kernel_param *kp)
 965 {
 966         struct hda_intel *hda;
 967         struct azx *chip;
 968         int prev = power_save;
 969         int ret = param_set_int(val, kp);
 970
 971         if (ret || prev == power_save)
 972                 return ret;
 973
 974         mutex_lock(&card_list_lock);
 975         list_for_each_entry(hda, &card_list, list) {
 976                 chip = &hda->chip;
 977                 if (!hda->probe_continued || chip->disabled)
 978                         continue;
 979                 snd_hda_set_power_save(&chip->bus, power_save * 1000);
 980         }
 981         mutex_unlock(&card_list_lock);
 982         return 0;
 983 }
 984 #else
 985 #define azx_add_card_list(chip) /* NOP */
 986 #define azx_del_card_list(chip) /* NOP */
 987 #endif /* CONFIG_PM */
 988
 989 #if defined(CONFIG_PM_SLEEP) || defined(SUPPORT_VGA_SWITCHEROO)
 990 /*
 991  * power management
 992  */
 993 static int azx_suspend(struct device *dev)
 994 {
 995         struct snd_card *card = dev_get_drvdata(dev);
 996         struct azx *chip;
 997         struct hda_intel *hda;
 998         struct hdac_bus *bus;
 999
1000         if (!card)
1001                 return 0;
1002
1003         chip = card->private_data;
1004         hda = container_of(chip, struct hda_intel, chip);
1005         if (chip->disabled || hda->init_failed || !chip->running)
1006                 return 0;
1007
1008         bus = azx_bus(chip);
1009         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1010         azx_clear_irq_pending(chip);
1011         azx_stop_chip(chip);
1012         azx_enter_link_reset(chip);
1013         if (bus->irq >= 0) {
1014                 free_irq(bus->irq, chip);
1015                 bus->irq = -1;
1016         }
1017
1018         if (chip->msi)
1019                 pci_disable_msi(chip->pci);
1020         if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1021                 && hda->need_i915_power)
1022                 snd_hdac_display_power(bus, false);
1023
1024         trace_azx_suspend(chip);
1025         return 0;
1026 }
1027
1028 static int azx_resume(struct device *dev)
1029 {
1030         struct pci_dev *pci = to_pci_dev(dev);
1031         struct snd_card *card = dev_get_drvdata(dev);
1032         struct azx *chip;
1033         struct hda_intel *hda;
1034         struct hdac_bus *bus;
1035
1036         if (!card)
1037                 return 0;
1038
1039         chip = card->private_data;
1040         hda = container_of(chip, struct hda_intel, chip);
1041         bus = azx_bus(chip);
1042         if (chip->disabled || hda->init_failed || !chip->running)
1043                 return 0;
1044
1045         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1046                 snd_hdac_display_power(bus, true);
1047                 if (hda->need_i915_power)
1048                         snd_hdac_i915_set_bclk(bus);
1049         }
1050
1051         if (chip->msi)
1052                 if (pci_enable_msi(pci) < 0)
1053                         chip->msi = 0;
1054         if (azx_acquire_irq(chip, 1) < 0)
1055                 return -EIO;
1056         azx_init_pci(chip);
1057
1058         hda_intel_init_chip(chip, true);
1059
1060         /* power down again for link-controlled chips */
1061         if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL) &&
1062             !hda->need_i915_power)
1063                 snd_hdac_display_power(bus, false);
1064
1065         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1066
1067         trace_azx_resume(chip);
1068         return 0;
1069 }
1070 #endif /* CONFIG_PM_SLEEP || SUPPORT_VGA_SWITCHEROO */
1071
1072 #ifdef CONFIG_PM_SLEEP
1073 /* put codec down to D3 at hibernation for Intel SKL+;
1074  * otherwise BIOS may still access the codec and screw up the driver
1075  */
1076 static int azx_freeze_noirq(struct device *dev)
1077 {
1078         struct snd_card *card = dev_get_drvdata(dev);
1079         struct azx *chip = card->private_data;
1080         struct pci_dev *pci = to_pci_dev(dev);
1081
1082         if (chip->driver_type == AZX_DRIVER_SKL)
1083                 pci_set_power_state(pci, PCI_D3hot);
1084
1085         return 0;
1086 }
1087
1088 static int azx_thaw_noirq(struct device *dev)
1089 {
1090         struct snd_card *card = dev_get_drvdata(dev);
1091         struct azx *chip = card->private_data;
1092         struct pci_dev *pci = to_pci_dev(dev);
1093
1094         if (chip->driver_type == AZX_DRIVER_SKL)
1095                 pci_set_power_state(pci, PCI_D0);
1096
1097         return 0;
1098 }
1099 #endif /* CONFIG_PM_SLEEP */
1100
1101 #ifdef CONFIG_PM
1102 static int azx_runtime_suspend(struct device *dev)
1103 {
1104         struct snd_card *card = dev_get_drvdata(dev);
1105         struct azx *chip;
1106         struct hda_intel *hda;
1107
1108         if (!card)
1109                 return 0;
1110
1111         chip = card->private_data;
1112         hda = container_of(chip, struct hda_intel, chip);
1113         if (chip->disabled || hda->init_failed)
1114                 return 0;
1115
1116         if (!azx_has_pm_runtime(chip))
1117                 return 0;
1118
1119         /* enable controller wake up event */
1120         azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) |
1121                   STATESTS_INT_MASK);
1122
1123         azx_stop_chip(chip);
1124         azx_enter_link_reset(chip);
1125         azx_clear_irq_pending(chip);
1126         if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1127                 && hda->need_i915_power)
1128                 snd_hdac_display_power(azx_bus(chip), false);
1129
1130         trace_azx_runtime_suspend(chip);
1131         return 0;
1132 }
1133
1134 static int azx_runtime_resume(struct device *dev)
1135 {
1136         struct snd_card *card = dev_get_drvdata(dev);
1137         struct azx *chip;
1138         struct hda_intel *hda;
1139         struct hdac_bus *bus;
1140         struct hda_codec *codec;
1141         int status;
1142
1143         if (!card)
1144                 return 0;
1145
1146         chip = card->private_data;
1147         hda = container_of(chip, struct hda_intel, chip);
1148         bus = azx_bus(chip);
1149         if (chip->disabled || hda->init_failed)
1150                 return 0;
1151
1152         if (!azx_has_pm_runtime(chip))
1153                 return 0;
1154
1155         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1156                 snd_hdac_display_power(bus, true);
1157                 if (hda->need_i915_power)
1158                         snd_hdac_i915_set_bclk(bus);
1159         }
1160
1161         /* Read STATESTS before controller reset */
1162         status = azx_readw(chip, STATESTS);
1163
1164         azx_init_pci(chip);
1165         hda_intel_init_chip(chip, true);
1166
1167         if (status) {
1168                 list_for_each_codec(codec, &chip->bus)
1169                         if (status & (1 << codec->addr))
1170                                 schedule_delayed_work(&codec->jackpoll_work,
1171                                                       codec->jackpoll_interval);
1172         }
1173
1174         /* disable controller Wake Up event*/
1175         azx_writew(chip, WAKEEN, azx_readw(chip, WAKEEN) &
1176                         ~STATESTS_INT_MASK);
1177
1178         /* power down again for link-controlled chips */
1179         if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL) &&
1180             !hda->need_i915_power)
1181                 snd_hdac_display_power(bus, false);
1182
1183         trace_azx_runtime_resume(chip);
1184         return 0;
1185 }
1186
1187 static int azx_runtime_idle(struct device *dev)
1188 {
1189         struct snd_card *card = dev_get_drvdata(dev);
1190         struct azx *chip;
1191         struct hda_intel *hda;
1192
1193         if (!card)
1194                 return 0;
1195
1196         chip = card->private_data;
1197         hda = container_of(chip, struct hda_intel, chip);
1198         if (chip->disabled || hda->init_failed)
1199                 return 0;
1200
1201         if (!power_save_controller || !azx_has_pm_runtime(chip) ||
1202             azx_bus(chip)->codec_powered || !chip->running)
1203                 return -EBUSY;
1204
1205         return 0;
1206 }
1207
1208 static const struct dev_pm_ops azx_pm = {
1209         SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume)
1210 #ifdef CONFIG_PM_SLEEP
1211         .freeze_noirq = azx_freeze_noirq,
1212         .thaw_noirq = azx_thaw_noirq,
1213 #endif
1214         SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle)
1215 };
1216
1217 #define AZX_PM_OPS      &azx_pm
1218 #else
1219 #define AZX_PM_OPS      NULL
1220 #endif /* CONFIG_PM */
1221
1222
1223 static int azx_probe_continue(struct azx *chip);
1224
1225 #ifdef SUPPORT_VGA_SWITCHEROO
1226 static struct pci_dev *get_bound_vga(struct pci_dev *pci);
1227
1228 static void azx_vs_set_state(struct pci_dev *pci,
1229                              enum vga_switcheroo_state state)
1230 {
1231         struct snd_card *card = pci_get_drvdata(pci);
1232         struct azx *chip = card->private_data;
1233         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1234         bool disabled;
1235
1236         wait_for_completion(&hda->probe_wait);
1237         if (hda->init_failed)
1238                 return;
1239
1240         disabled = (state == VGA_SWITCHEROO_OFF);
1241         if (chip->disabled == disabled)
1242                 return;
1243
1244         if (!hda->probe_continued) {
1245                 chip->disabled = disabled;
1246                 if (!disabled) {
1247                         dev_info(chip->card->dev,
1248                                  "Start delayed initialization\n");
1249                         if (azx_probe_continue(chip) < 0) {
1250                                 dev_err(chip->card->dev, "initialization error\n");
1251                                 hda->init_failed = true;
1252                         }
1253                 }
1254         } else {
1255                 dev_info(chip->card->dev, "%s via vga_switcheroo\n",
1256                          disabled ? "Disabling" : "Enabling");
1257                 if (disabled) {
1258                         pm_runtime_put_sync_suspend(card->dev);
1259                         azx_suspend(card->dev);
1260                         /* when we get suspended by vga_switcheroo we end up in D3cold,
1261                          * however we have no ACPI handle, so pci/acpi can't put us there,
1262                          * put ourselves there */
1263                         pci->current_state = PCI_D3cold;
1264                         chip->disabled = true;
1265                         if (snd_hda_lock_devices(&chip->bus))
1266                                 dev_warn(chip->card->dev,
1267                                          "Cannot lock devices!\n");
1268                 } else {
1269                         snd_hda_unlock_devices(&chip->bus);
1270                         pm_runtime_get_noresume(card->dev);
1271                         chip->disabled = false;
1272                         azx_resume(card->dev);
1273                 }
1274         }
1275 }
1276
1277 static bool azx_vs_can_switch(struct pci_dev *pci)
1278 {
1279         struct snd_card *card = pci_get_drvdata(pci);
1280         struct azx *chip = card->private_data;
1281         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1282
1283         wait_for_completion(&hda->probe_wait);
1284         if (hda->init_failed)
1285                 return false;
1286         if (chip->disabled || !hda->probe_continued)
1287                 return true;
1288         if (snd_hda_lock_devices(&chip->bus))
1289                 return false;
1290         snd_hda_unlock_devices(&chip->bus);
1291         return true;
1292 }
1293
1294 static void init_vga_switcheroo(struct azx *chip)
1295 {
1296         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1297         struct pci_dev *p = get_bound_vga(chip->pci);
1298         if (p) {
1299                 dev_info(chip->card->dev,
1300                          "Handle vga_switcheroo audio client\n");
1301                 hda->use_vga_switcheroo = 1;
1302                 pci_dev_put(p);
1303         }
1304 }
1305
1306 static const struct vga_switcheroo_client_ops azx_vs_ops = {
1307         .set_gpu_state = azx_vs_set_state,
1308         .can_switch = azx_vs_can_switch,
1309 };
1310
1311 static int register_vga_switcheroo(struct azx *chip)
1312 {
1313         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1314         int err;
1315
1316         if (!hda->use_vga_switcheroo)
1317                 return 0;
1318         /* FIXME: currently only handling DIS controller
1319          * is there any machine with two switchable HDMI audio controllers?
1320          */
1321         err = vga_switcheroo_register_audio_client(chip->pci, &azx_vs_ops,
1322                                                    VGA_SWITCHEROO_DIS);
1323         if (err < 0)
1324                 return err;
1325         hda->vga_switcheroo_registered = 1;
1326
1327         /* register as an optimus hdmi audio power domain */
1328         vga_switcheroo_init_domain_pm_optimus_hdmi_audio(chip->card->dev,
1329                                                          &hda->hdmi_pm_domain);
1330         return 0;
1331 }
1332 #else
1333 #define init_vga_switcheroo(chip)               /* NOP */
1334 #define register_vga_switcheroo(chip)           0
1335 #define check_hdmi_disabled(pci)        false
1336 #endif /* SUPPORT_VGA_SWITCHER */
1337
1338 /*
1339  * destructor
1340  */
1341 static int azx_free(struct azx *chip)
1342 {
1343         struct pci_dev *pci = chip->pci;
1344         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
1345         struct hdac_bus *bus = azx_bus(chip);
1346
1347         if (azx_has_pm_runtime(chip) && chip->running)
1348                 pm_runtime_get_noresume(&pci->dev);
1349
1350         azx_del_card_list(chip);
1351
1352         hda->init_failed = 1; /* to be sure */
1353         complete_all(&hda->probe_wait);
1354
1355         if (use_vga_switcheroo(hda)) {
1356                 if (chip->disabled && hda->probe_continued)
1357                         snd_hda_unlock_devices(&chip->bus);
1358                 if (hda->vga_switcheroo_registered) {
1359                         vga_switcheroo_unregister_client(chip->pci);
1360                         vga_switcheroo_fini_domain_pm_ops(chip->card->dev);
1361                 }
1362         }
1363
1364         if (bus->chip_init) {
1365                 azx_clear_irq_pending(chip);
1366                 azx_stop_all_streams(chip);
1367                 azx_stop_chip(chip);
1368         }
1369
1370         if (bus->irq >= 0)
1371                 free_irq(bus->irq, (void*)chip);
1372         if (chip->msi)
1373                 pci_disable_msi(chip->pci);
1374         iounmap(bus->remap_addr);
1375
1376         azx_free_stream_pages(chip);
1377         azx_free_streams(chip);
1378         snd_hdac_bus_exit(bus);
1379
1380         if (chip->region_requested)
1381                 pci_release_regions(chip->pci);
1382
1383         pci_disable_device(chip->pci);
1384 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1385         release_firmware(chip->fw);
1386 #endif
1387
1388         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
1389                 if (hda->need_i915_power)
1390                         snd_hdac_display_power(bus, false);
1391         }
1392         if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT)
1393                 snd_hdac_i915_exit(bus);
1394         kfree(hda);
1395
1396         return 0;
1397 }
1398
1399 static int azx_dev_disconnect(struct snd_device *device)
1400 {
1401         struct azx *chip = device->device_data;
1402
1403         chip->bus.shutdown = 1;
1404         return 0;
1405 }
1406
1407 static int azx_dev_free(struct snd_device *device)
1408 {
1409         return azx_free(device->device_data);
1410 }
1411
1412 #ifdef SUPPORT_VGA_SWITCHEROO
1413 /*
1414  * Check of disabled HDMI controller by vga_switcheroo
1415  */
1416 static struct pci_dev *get_bound_vga(struct pci_dev *pci)
1417 {
1418         struct pci_dev *p;
1419
1420         /* check only discrete GPU */
1421         switch (pci->vendor) {
1422         case PCI_VENDOR_ID_ATI:
1423         case PCI_VENDOR_ID_AMD:
1424         case PCI_VENDOR_ID_NVIDIA:
1425                 if (pci->devfn == 1) {
1426                         p = pci_get_domain_bus_and_slot(pci_domain_nr(pci->bus),
1427                                                         pci->bus->number, 0);
1428                         if (p) {
1429                                 if ((p->class >> 8) == PCI_CLASS_DISPLAY_VGA)
1430                                         return p;
1431                                 pci_dev_put(p);
1432                         }
1433                 }
1434                 break;
1435         }
1436         return NULL;
1437 }
1438
1439 static bool check_hdmi_disabled(struct pci_dev *pci)
1440 {
1441         bool vga_inactive = false;
1442         struct pci_dev *p = get_bound_vga(pci);
1443
1444         if (p) {
1445                 if (vga_switcheroo_get_client_state(p) == VGA_SWITCHEROO_OFF)
1446                         vga_inactive = true;
1447                 pci_dev_put(p);
1448         }
1449         return vga_inactive;
1450 }
1451 #endif /* SUPPORT_VGA_SWITCHEROO */
1452
1453 /*
1454  * white/black-listing for position_fix
1455  */
1456 static struct snd_pci_quirk position_fix_list[] = {
1457         SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
1458         SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
1459         SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
1460         SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
1461         SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
1462         SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
1463         SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
1464         SND_PCI_QUIRK(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB),
1465         SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
1466         SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
1467         SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
1468         SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
1469         SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
1470         SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
1471         {}
1472 };
1473
1474 static int check_position_fix(struct azx *chip, int fix)
1475 {
1476         const struct snd_pci_quirk *q;
1477
1478         switch (fix) {
1479         case POS_FIX_AUTO:
1480         case POS_FIX_LPIB:
1481         case POS_FIX_POSBUF:
1482         case POS_FIX_VIACOMBO:
1483         case POS_FIX_COMBO:
1484         case POS_FIX_SKL:
1485                 return fix;
1486         }
1487
1488         q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
1489         if (q) {
1490                 dev_info(chip->card->dev,
1491                          "position_fix set to %d for device %04x:%04x\n",
1492                          q->value, q->subvendor, q->subdevice);
1493                 return q->value;
1494         }
1495
1496         /* Check VIA/ATI HD Audio Controller exist */
1497         if (chip->driver_type == AZX_DRIVER_VIA) {
1498                 dev_dbg(chip->card->dev, "Using VIACOMBO position fix\n");
1499                 return POS_FIX_VIACOMBO;
1500         }
1501         if (chip->driver_caps & AZX_DCAPS_POSFIX_LPIB) {
1502                 dev_dbg(chip->card->dev, "Using LPIB position fix\n");
1503                 return POS_FIX_LPIB;
1504         }
1505         if (chip->driver_type == AZX_DRIVER_SKL) {
1506                 dev_dbg(chip->card->dev, "Using SKL position fix\n");
1507                 return POS_FIX_SKL;
1508         }
1509         return POS_FIX_AUTO;
1510 }
1511
1512 static void assign_position_fix(struct azx *chip, int fix)
1513 {
1514         static azx_get_pos_callback_t callbacks[] = {
1515                 [POS_FIX_AUTO] = NULL,
1516                 [POS_FIX_LPIB] = azx_get_pos_lpib,
1517                 [POS_FIX_POSBUF] = azx_get_pos_posbuf,
1518                 [POS_FIX_VIACOMBO] = azx_via_get_position,
1519                 [POS_FIX_COMBO] = azx_get_pos_lpib,
1520                 [POS_FIX_SKL] = azx_get_pos_skl,
1521         };
1522
1523         chip->get_position[0] = chip->get_position[1] = callbacks[fix];
1524
1525         /* combo mode uses LPIB only for playback */
1526         if (fix == POS_FIX_COMBO)
1527                 chip->get_position[1] = NULL;
1528
1529         if ((fix == POS_FIX_POSBUF || fix == POS_FIX_SKL) &&
1530             (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
1531                 chip->get_delay[0] = chip->get_delay[1] =
1532                         azx_get_delay_from_lpib;
1533         }
1534
1535 }
1536
1537 /*
1538  * black-lists for probe_mask
1539  */
1540 static struct snd_pci_quirk probe_mask_list[] = {
1541         /* Thinkpad often breaks the controller communication when accessing
1542          * to the non-working (or non-existing) modem codec slot.
1543          */
1544         SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
1545         SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
1546         SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
1547         /* broken BIOS */
1548         SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
1549         /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
1550         SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
1551         /* forced codec slots */
1552         SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
1553         SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
1554         /* WinFast VP200 H (Teradici) user reported broken communication */
1555         SND_PCI_QUIRK(0x3a21, 0x040d, "WinFast VP200 H", 0x101),
1556         {}
1557 };
1558
1559 #define AZX_FORCE_CODEC_MASK    0x100
1560
1561 static void check_probe_mask(struct azx *chip, int dev)
1562 {
1563         const struct snd_pci_quirk *q;
1564
1565         chip->codec_probe_mask = probe_mask[dev];
1566         if (chip->codec_probe_mask == -1) {
1567                 q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
1568                 if (q) {
1569                         dev_info(chip->card->dev,
1570                                  "probe_mask set to 0x%x for device %04x:%04x\n",
1571                                  q->value, q->subvendor, q->subdevice);
1572                         chip->codec_probe_mask = q->value;
1573                 }
1574         }
1575
1576         /* check forced option */
1577         if (chip->codec_probe_mask != -1 &&
1578             (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
1579                 azx_bus(chip)->codec_mask = chip->codec_probe_mask & 0xff;
1580                 dev_info(chip->card->dev, "codec_mask forced to 0x%x\n",
1581                          (int)azx_bus(chip)->codec_mask);
1582         }
1583 }
1584
1585 /*
1586  * white/black-list for enable_msi
1587  */
1588 static struct snd_pci_quirk msi_black_list[] = {
1589         SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
1590         SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
1591         SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
1592         SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
1593         SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
1594         SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
1595         SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
1596         SND_PCI_QUIRK(0x1179, 0xfb44, "Toshiba Satellite C870", 0), /* AMD Hudson */
1597         SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
1598         SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
1599         {}
1600 };
1601
1602 static void check_msi(struct azx *chip)
1603 {
1604         const struct snd_pci_quirk *q;
1605
1606         if (enable_msi >= 0) {
1607                 chip->msi = !!enable_msi;
1608                 return;
1609         }
1610         chip->msi = 1;  /* enable MSI as default */
1611         q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
1612         if (q) {
1613                 dev_info(chip->card->dev,
1614                          "msi for device %04x:%04x set to %d\n",
1615                          q->subvendor, q->subdevice, q->value);
1616                 chip->msi = q->value;
1617                 return;
1618         }
1619
1620         /* NVidia chipsets seem to cause troubles with MSI */
1621         if (chip->driver_caps & AZX_DCAPS_NO_MSI) {
1622                 dev_info(chip->card->dev, "Disabling MSI\n");
1623                 chip->msi = 0;
1624         }
1625 }
1626
1627 /* check the snoop mode availability */
1628 static void azx_check_snoop_available(struct azx *chip)
1629 {
1630         int snoop = hda_snoop;
1631
1632         if (snoop >= 0) {
1633                 dev_info(chip->card->dev, "Force to %s mode by module option\n",
1634                          snoop ? "snoop" : "non-snoop");
1635                 chip->snoop = snoop;
1636                 return;
1637         }
1638
1639         snoop = true;
1640         if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&
1641             chip->driver_type == AZX_DRIVER_VIA) {
1642                 /* force to non-snoop mode for a new VIA controller
1643                  * when BIOS is set
1644                  */
1645                 u8 val;
1646                 pci_read_config_byte(chip->pci, 0x42, &val);
1647                 if (!(val & 0x80) && chip->pci->revision == 0x30)
1648                         snoop = false;
1649         }
1650
1651         if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)
1652                 snoop = false;
1653
1654         chip->snoop = snoop;
1655         if (!snoop)
1656                 dev_info(chip->card->dev, "Force to non-snoop mode\n");
1657 }
1658
1659 static void azx_probe_work(struct work_struct *work)
1660 {
1661         struct hda_intel *hda = container_of(work, struct hda_intel, probe_work);
1662         azx_probe_continue(&hda->chip);
1663 }
1664
1665 static int default_bdl_pos_adj(struct azx *chip)
1666 {
1667         /* some exceptions: Atoms seem problematic with value 1 */
1668         if (chip->pci->vendor == PCI_VENDOR_ID_INTEL) {
1669                 switch (chip->pci->device) {
1670                 case 0x0f04: /* Baytrail */
1671                 case 0x2284: /* Braswell */
1672                         return 32;
1673                 }
1674         }
1675
1676         switch (chip->driver_type) {
1677         case AZX_DRIVER_ICH:
1678         case AZX_DRIVER_PCH:
1679                 return 1;
1680         default:
1681                 return 32;
1682         }
1683 }
1684
1685 /*
1686  * constructor
1687  */
1688 static const struct hdac_io_ops pci_hda_io_ops;
1689 static const struct hda_controller_ops pci_hda_ops;
1690
1691 static int azx_create(struct snd_card *card, struct pci_dev *pci,
1692                       int dev, unsigned int driver_caps,
1693                       struct azx **rchip)
1694 {
1695         static struct snd_device_ops ops = {
1696                 .dev_disconnect = azx_dev_disconnect,
1697                 .dev_free = azx_dev_free,
1698         };
1699         struct hda_intel *hda;
1700         struct azx *chip;
1701         int err;
1702
1703         *rchip = NULL;
1704
1705         err = pci_enable_device(pci);
1706         if (err < 0)
1707                 return err;
1708
1709         hda = kzalloc(sizeof(*hda), GFP_KERNEL);
1710         if (!hda) {
1711                 pci_disable_device(pci);
1712                 return -ENOMEM;
1713         }
1714
1715         chip = &hda->chip;
1716         mutex_init(&chip->open_mutex);
1717         chip->card = card;
1718         chip->pci = pci;
1719         chip->ops = &pci_hda_ops;
1720         chip->driver_caps = driver_caps;
1721         chip->driver_type = driver_caps & 0xff;
1722         check_msi(chip);
1723         chip->dev_index = dev;
1724         chip->jackpoll_ms = jackpoll_ms;
1725         INIT_LIST_HEAD(&chip->pcm_list);
1726         INIT_WORK(&hda->irq_pending_work, azx_irq_pending_work);
1727         INIT_LIST_HEAD(&hda->list);
1728         init_vga_switcheroo(chip);
1729         init_completion(&hda->probe_wait);
1730
1731         assign_position_fix(chip, check_position_fix(chip, position_fix[dev]));
1732
1733         check_probe_mask(chip, dev);
1734
1735         if (single_cmd < 0) /* allow fallback to single_cmd at errors */
1736                 chip->fallback_to_single_cmd = 1;
1737         else /* explicitly set to single_cmd or not */
1738                 chip->single_cmd = single_cmd;
1739
1740         azx_check_snoop_available(chip);
1741
1742         if (bdl_pos_adj[dev] < 0)
1743                 chip->bdl_pos_adj = default_bdl_pos_adj(chip);
1744         else
1745                 chip->bdl_pos_adj = bdl_pos_adj[dev];
1746
1747         err = azx_bus_init(chip, model[dev], &pci_hda_io_ops);
1748         if (err < 0) {
1749                 kfree(hda);
1750                 pci_disable_device(pci);
1751                 return err;
1752         }
1753
1754         if (chip->driver_type == AZX_DRIVER_NVIDIA) {
1755                 dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");
1756                 chip->bus.needs_damn_long_delay = 1;
1757         }
1758
1759         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1760         if (err < 0) {
1761                 dev_err(card->dev, "Error creating device [card]!\n");
1762                 azx_free(chip);
1763                 return err;
1764         }
1765
1766         /* continue probing in work context as may trigger request module */
1767         INIT_WORK(&hda->probe_work, azx_probe_work);
1768
1769         *rchip = chip;
1770
1771         return 0;
1772 }
1773
1774 static int azx_first_init(struct azx *chip)
1775 {
1776         int dev = chip->dev_index;
1777         struct pci_dev *pci = chip->pci;
1778         struct snd_card *card = chip->card;
1779         struct hdac_bus *bus = azx_bus(chip);
1780         int err;
1781         unsigned short gcap;
1782         unsigned int dma_bits = 64;
1783
1784 #if BITS_PER_LONG != 64
1785         /* Fix up base address on ULI M5461 */
1786         if (chip->driver_type == AZX_DRIVER_ULI) {
1787                 u16 tmp3;
1788                 pci_read_config_word(pci, 0x40, &tmp3);
1789                 pci_write_config_word(pci, 0x40, tmp3 | 0x10);
1790                 pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
1791         }
1792 #endif
1793
1794         err = pci_request_regions(pci, "ICH HD audio");
1795         if (err < 0)
1796                 return err;
1797         chip->region_requested = 1;
1798
1799         bus->addr = pci_resource_start(pci, 0);
1800         bus->remap_addr = pci_ioremap_bar(pci, 0);
1801         if (bus->remap_addr == NULL) {
1802                 dev_err(card->dev, "ioremap error\n");
1803                 return -ENXIO;
1804         }
1805
1806         if (chip->driver_type == AZX_DRIVER_SKL)
1807                 snd_hdac_bus_parse_capabilities(bus);
1808
1809         /*
1810          * Some Intel CPUs has always running timer (ART) feature and
1811          * controller may have Global time sync reporting capability, so
1812          * check both of these before declaring synchronized time reporting
1813          * capability SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME
1814          */
1815         chip->gts_present = false;
1816
1817 #ifdef CONFIG_X86
1818         if (bus->ppcap && boot_cpu_has(X86_FEATURE_ART))
1819                 chip->gts_present = true;
1820 #endif
1821
1822         if (chip->msi) {
1823                 if (chip->driver_caps & AZX_DCAPS_NO_MSI64) {
1824                         dev_dbg(card->dev, "Disabling 64bit MSI\n");
1825                         pci->no_64bit_msi = true;
1826                 }
1827                 if (pci_enable_msi(pci) < 0)
1828                         chip->msi = 0;
1829         }
1830
1831         if (azx_acquire_irq(chip, 0) < 0)
1832                 return -EBUSY;
1833
1834         pci_set_master(pci);
1835         synchronize_irq(bus->irq);
1836
1837         gcap = azx_readw(chip, GCAP);
1838         dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
1839
1840         /* AMD devices support 40 or 48bit DMA, take the safe one */
1841         if (chip->pci->vendor == PCI_VENDOR_ID_AMD)
1842                 dma_bits = 40;
1843
1844         /* disable SB600 64bit support for safety */
1845         if (chip->pci->vendor == PCI_VENDOR_ID_ATI) {
1846                 struct pci_dev *p_smbus;
1847                 dma_bits = 40;
1848                 p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
1849                                          PCI_DEVICE_ID_ATI_SBX00_SMBUS,
1850                                          NULL);
1851                 if (p_smbus) {
1852                         if (p_smbus->revision < 0x30)
1853                                 gcap &= ~AZX_GCAP_64OK;
1854                         pci_dev_put(p_smbus);
1855                 }
1856         }
1857
1858         /* NVidia hardware normally only supports up to 40 bits of DMA */
1859         if (chip->pci->vendor == PCI_VENDOR_ID_NVIDIA)
1860                 dma_bits = 40;
1861
1862         /* disable 64bit DMA address on some devices */
1863         if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {
1864                 dev_dbg(card->dev, "Disabling 64bit DMA\n");
1865                 gcap &= ~AZX_GCAP_64OK;
1866         }
1867
1868         /* disable buffer size rounding to 128-byte multiples if supported */
1869         if (align_buffer_size >= 0)
1870                 chip->align_buffer_size = !!align_buffer_size;
1871         else {
1872                 if (chip->driver_caps & AZX_DCAPS_NO_ALIGN_BUFSIZE)
1873                         chip->align_buffer_size = 0;
1874                 else
1875                         chip->align_buffer_size = 1;
1876         }
1877
1878         /* allow 64bit DMA address if supported by H/W */
1879         if (!(gcap & AZX_GCAP_64OK))
1880                 dma_bits = 32;
1881         if (!dma_set_mask(&pci->dev, DMA_BIT_MASK(dma_bits))) {
1882                 dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(dma_bits));
1883         } else {
1884                 dma_set_mask(&pci->dev, DMA_BIT_MASK(32));
1885                 dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32));
1886         }
1887
1888         /* read number of streams from GCAP register instead of using
1889          * hardcoded value
1890          */
1891         chip->capture_streams = (gcap >> 8) & 0x0f;
1892         chip->playback_streams = (gcap >> 12) & 0x0f;
1893         if (!chip->playback_streams && !chip->capture_streams) {
1894                 /* gcap didn't give any info, switching to old method */
1895
1896                 switch (chip->driver_type) {
1897                 case AZX_DRIVER_ULI:
1898                         chip->playback_streams = ULI_NUM_PLAYBACK;
1899                         chip->capture_streams = ULI_NUM_CAPTURE;
1900                         break;
1901                 case AZX_DRIVER_ATIHDMI:
1902                 case AZX_DRIVER_ATIHDMI_NS:
1903                         chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
1904                         chip->capture_streams = ATIHDMI_NUM_CAPTURE;
1905                         break;
1906                 case AZX_DRIVER_GENERIC:
1907                 default:
1908                         chip->playback_streams = ICH6_NUM_PLAYBACK;
1909                         chip->capture_streams = ICH6_NUM_CAPTURE;
1910                         break;
1911                 }
1912         }
1913         chip->capture_index_offset = 0;
1914         chip->playback_index_offset = chip->capture_streams;
1915         chip->num_streams = chip->playback_streams + chip->capture_streams;
1916
1917         /* sanity check for the SDxCTL.STRM field overflow */
1918         if (chip->num_streams > 15 &&
1919             (chip->driver_caps & AZX_DCAPS_SEPARATE_STREAM_TAG) == 0) {
1920                 dev_warn(chip->card->dev, "number of I/O streams is %d, "
1921                          "forcing separate stream tags", chip->num_streams);
1922                 chip->driver_caps |= AZX_DCAPS_SEPARATE_STREAM_TAG;
1923         }
1924
1925         /* initialize streams */
1926         err = azx_init_streams(chip);
1927         if (err < 0)
1928                 return err;
1929
1930         err = azx_alloc_stream_pages(chip);
1931         if (err < 0)
1932                 return err;
1933
1934         /* initialize chip */
1935         azx_init_pci(chip);
1936
1937         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
1938                 snd_hdac_i915_set_bclk(bus);
1939
1940         hda_intel_init_chip(chip, (probe_only[dev] & 2) == 0);
1941
1942         /* codec detection */
1943         if (!azx_bus(chip)->codec_mask) {
1944                 dev_err(card->dev, "no codecs found!\n");
1945                 return -ENODEV;
1946         }
1947
1948         strcpy(card->driver, "HDA-Intel");
1949         strlcpy(card->shortname, driver_short_names[chip->driver_type],
1950                 sizeof(card->shortname));
1951         snprintf(card->longname, sizeof(card->longname),
1952                  "%s at 0x%lx irq %i",
1953                  card->shortname, bus->addr, bus->irq);
1954
1955         return 0;
1956 }
1957
1958 #ifdef CONFIG_SND_HDA_PATCH_LOADER
1959 /* callback from request_firmware_nowait() */
1960 static void azx_firmware_cb(const struct firmware *fw, void *context)
1961 {
1962         struct snd_card *card = context;
1963         struct azx *chip = card->private_data;
1964         struct pci_dev *pci = chip->pci;
1965
1966         if (!fw) {
1967                 dev_err(card->dev, "Cannot load firmware, aborting\n");
1968                 goto error;
1969         }
1970
1971         chip->fw = fw;
1972         if (!chip->disabled) {
1973                 /* continue probing */
1974                 if (azx_probe_continue(chip))
1975                         goto error;
1976         }
1977         return; /* OK */
1978
1979  error:
1980         snd_card_free(card);
1981         pci_set_drvdata(pci, NULL);
1982 }
1983 #endif
1984
1985 /*
1986  * HDA controller ops.
1987  */
1988
1989 /* PCI register access. */
1990 static void pci_azx_writel(u32 value, u32 __iomem *addr)
1991 {
1992         writel(value, addr);
1993 }
1994
1995 static u32 pci_azx_readl(u32 __iomem *addr)
1996 {
1997         return readl(addr);
1998 }
1999
2000 static void pci_azx_writew(u16 value, u16 __iomem *addr)
2001 {
2002         writew(value, addr);
2003 }
2004
2005 static u16 pci_azx_readw(u16 __iomem *addr)
2006 {
2007         return readw(addr);
2008 }
2009
2010 static void pci_azx_writeb(u8 value, u8 __iomem *addr)
2011 {
2012         writeb(value, addr);
2013 }
2014
2015 static u8 pci_azx_readb(u8 __iomem *addr)
2016 {
2017         return readb(addr);
2018 }
2019
2020 static int disable_msi_reset_irq(struct azx *chip)
2021 {
2022         struct hdac_bus *bus = azx_bus(chip);
2023         int err;
2024
2025         free_irq(bus->irq, chip);
2026         bus->irq = -1;
2027         pci_disable_msi(chip->pci);
2028         chip->msi = 0;
2029         err = azx_acquire_irq(chip, 1);
2030         if (err < 0)
2031                 return err;
2032
2033         return 0;
2034 }
2035
2036 /* DMA page allocation helpers.  */
2037 static int dma_alloc_pages(struct hdac_bus *bus,
2038                            int type,
2039                            size_t size,
2040                            struct snd_dma_buffer *buf)
2041 {
2042         struct azx *chip = bus_to_azx(bus);
2043         int err;
2044
2045         err = snd_dma_alloc_pages(type,
2046                                   bus->dev,
2047                                   size, buf);
2048         if (err < 0)
2049                 return err;
2050         mark_pages_wc(chip, buf, true);
2051         return 0;
2052 }
2053
2054 static void dma_free_pages(struct hdac_bus *bus, struct snd_dma_buffer *buf)
2055 {
2056         struct azx *chip = bus_to_azx(bus);
2057
2058         mark_pages_wc(chip, buf, false);
2059         snd_dma_free_pages(buf);
2060 }
2061
2062 static int substream_alloc_pages(struct azx *chip,
2063                                  struct snd_pcm_substream *substream,
2064                                  size_t size)
2065 {
2066         struct azx_dev *azx_dev = get_azx_dev(substream);
2067         int ret;
2068
2069         mark_runtime_wc(chip, azx_dev, substream, false);
2070         ret = snd_pcm_lib_malloc_pages(substream, size);
2071         if (ret < 0)
2072                 return ret;
2073         mark_runtime_wc(chip, azx_dev, substream, true);
2074         return 0;
2075 }
2076
2077 static int substream_free_pages(struct azx *chip,
2078                                 struct snd_pcm_substream *substream)
2079 {
2080         struct azx_dev *azx_dev = get_azx_dev(substream);
2081         mark_runtime_wc(chip, azx_dev, substream, false);
2082         return snd_pcm_lib_free_pages(substream);
2083 }
2084
2085 static void pcm_mmap_prepare(struct snd_pcm_substream *substream,
2086                              struct vm_area_struct *area)
2087 {
2088 #ifdef CONFIG_X86
2089         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
2090         struct azx *chip = apcm->chip;
2091         if (!azx_snoop(chip) && chip->driver_type != AZX_DRIVER_CMEDIA)
2092                 area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
2093 #endif
2094 }
2095
2096 static const struct hdac_io_ops pci_hda_io_ops = {
2097         .reg_writel = pci_azx_writel,
2098         .reg_readl = pci_azx_readl,
2099         .reg_writew = pci_azx_writew,
2100         .reg_readw = pci_azx_readw,
2101         .reg_writeb = pci_azx_writeb,
2102         .reg_readb = pci_azx_readb,
2103         .dma_alloc_pages = dma_alloc_pages,
2104         .dma_free_pages = dma_free_pages,
2105 };
2106
2107 static const struct hda_controller_ops pci_hda_ops = {
2108         .disable_msi_reset_irq = disable_msi_reset_irq,
2109         .substream_alloc_pages = substream_alloc_pages,
2110         .substream_free_pages = substream_free_pages,
2111         .pcm_mmap_prepare = pcm_mmap_prepare,
2112         .position_check = azx_position_check,
2113         .link_power = azx_intel_link_power,
2114 };
2115
2116 static int azx_probe(struct pci_dev *pci,
2117                      const struct pci_device_id *pci_id)
2118 {
2119         static int dev;
2120         struct snd_card *card;
2121         struct hda_intel *hda;
2122         struct azx *chip;
2123         bool schedule_probe;
2124         int err;
2125
2126         if (dev >= SNDRV_CARDS)
2127                 return -ENODEV;
2128         if (!enable[dev]) {
2129                 dev++;
2130                 return -ENOENT;
2131         }
2132
2133         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2134                            0, &card);
2135         if (err < 0) {
2136                 dev_err(&pci->dev, "Error creating card!\n");
2137                 return err;
2138         }
2139
2140         err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2141         if (err < 0)
2142                 goto out_free;
2143         card->private_data = chip;
2144         hda = container_of(chip, struct hda_intel, chip);
2145
2146         pci_set_drvdata(pci, card);
2147
2148         err = register_vga_switcheroo(chip);
2149         if (err < 0) {
2150                 dev_err(card->dev, "Error registering vga_switcheroo client\n");
2151                 goto out_free;
2152         }
2153
2154         if (check_hdmi_disabled(pci)) {
2155                 dev_info(card->dev, "VGA controller is disabled\n");
2156                 dev_info(card->dev, "Delaying initialization\n");
2157                 chip->disabled = true;
2158         }
2159
2160         schedule_probe = !chip->disabled;
2161
2162 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2163         if (patch[dev] && *patch[dev]) {
2164                 dev_info(card->dev, "Applying patch firmware '%s'\n",
2165                          patch[dev]);
2166                 err = request_firmware_nowait(THIS_MODULE, true, patch[dev],
2167                                               &pci->dev, GFP_KERNEL, card,
2168                                               azx_firmware_cb);
2169                 if (err < 0)
2170                         goto out_free;
2171                 schedule_probe = false; /* continued in azx_firmware_cb() */
2172         }
2173 #endif /* CONFIG_SND_HDA_PATCH_LOADER */
2174
2175 #ifndef CONFIG_SND_HDA_I915
2176         if (CONTROLLER_IN_GPU(pci))
2177                 dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
2178 #endif
2179
2180         if (schedule_probe)
2181                 schedule_work(&hda->probe_work);
2182
2183         dev++;
2184         if (chip->disabled)
2185                 complete_all(&hda->probe_wait);
2186         return 0;
2187
2188 out_free:
2189         snd_card_free(card);
2190         return err;
2191 }
2192
2193 #ifdef CONFIG_PM
2194 /* On some boards setting power_save to a non 0 value leads to clicking /
2195  * popping sounds when ever we enter/leave powersaving mode. Ideally we would
2196  * figure out how to avoid these sounds, but that is not always feasible.
2197  * So we keep a list of devices where we disable powersaving as its known
2198  * to causes problems on these devices.
2199  */
2200 static struct snd_pci_quirk power_save_blacklist[] = {
2201         /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2202         SND_PCI_QUIRK(0x1849, 0x0c0c, "Asrock B85M-ITX", 0),
2203         /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
2204         SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
2205         /* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
2206         SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
2207         {}
2208 };
2209 #endif /* CONFIG_PM */
2210
2211 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
2212 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
2213         [AZX_DRIVER_NVIDIA] = 8,
2214         [AZX_DRIVER_TERA] = 1,
2215 };
2216
2217 static int azx_probe_continue(struct azx *chip)
2218 {
2219         struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
2220         struct hdac_bus *bus = azx_bus(chip);
2221         struct pci_dev *pci = chip->pci;
2222         int dev = chip->dev_index;
2223         int val;
2224         int err;
2225
2226         hda->probe_continued = 1;
2227
2228         /* bind with i915 if needed */
2229         if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
2230                 err = snd_hdac_i915_init(bus);
2231                 if (err < 0) {
2232                         /* if the controller is bound only with HDMI/DP
2233                          * (for HSW and BDW), we need to abort the probe;
2234                          * for other chips, still continue probing as other
2235                          * codecs can be on the same link.
2236                          */
2237                         if (CONTROLLER_IN_GPU(pci)) {
2238                                 dev_err(chip->card->dev,
2239                                         "HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
2240                                 goto out_free;
2241                         } else {
2242                                 /* don't bother any longer */
2243                                 chip->driver_caps &=
2244                                         ~(AZX_DCAPS_I915_COMPONENT | AZX_DCAPS_I915_POWERWELL);
2245                         }
2246                 }
2247         }
2248
2249         /* Request display power well for the HDA controller or codec. For
2250          * Haswell/Broadwell, both the display HDA controller and codec need
2251          * this power. For other platforms, like Baytrail/Braswell, only the
2252          * display codec needs the power and it can be released after probe.
2253          */
2254         if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) {
2255                 /* HSW/BDW controllers need this power */
2256                 if (CONTROLLER_IN_GPU(pci))
2257                         hda->need_i915_power = 1;
2258
2259                 err = snd_hdac_display_power(bus, true);
2260                 if (err < 0) {
2261                         dev_err(chip->card->dev,
2262                                 "Cannot turn on display power on i915\n");
2263                         goto i915_power_fail;
2264                 }
2265         }
2266
2267         err = azx_first_init(chip);
2268         if (err < 0)
2269                 goto out_free;
2270
2271 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2272         chip->beep_mode = beep_mode[dev];
2273 #endif
2274
2275         /* create codec instances */
2276         err = azx_probe_codecs(chip, azx_max_codecs[chip->driver_type]);
2277         if (err < 0)
2278                 goto out_free;
2279
2280 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2281         if (chip->fw) {
2282                 err = snd_hda_load_patch(&chip->bus, chip->fw->size,
2283                                          chip->fw->data);
2284                 if (err < 0)
2285                         goto out_free;
2286 #ifndef CONFIG_PM
2287                 release_firmware(chip->fw); /* no longer needed */
2288                 chip->fw = NULL;
2289 #endif
2290         }
2291 #endif
2292         if ((probe_only[dev] & 1) == 0) {
2293                 err = azx_codec_configure(chip);
2294                 if (err < 0)
2295                         goto out_free;
2296         }
2297
2298         err = snd_card_register(chip->card);
2299         if (err < 0)
2300                 goto out_free;
2301
2302         chip->running = 1;
2303         azx_add_card_list(chip);
2304
2305         val = power_save;
2306 #ifdef CONFIG_PM
2307         if (pm_blacklist) {
2308                 const struct snd_pci_quirk *q;
2309
2310                 q = snd_pci_quirk_lookup(chip->pci, power_save_blacklist);
2311                 if (q && val) {
2312                         dev_info(chip->card->dev, "device %04x:%04x is on the power_save blacklist, forcing power_save to 0\n",
2313                                  q->subvendor, q->subdevice);
2314                         val = 0;
2315                 }
2316         }
2317 #endif /* CONFIG_PM */
2318         snd_hda_set_power_save(&chip->bus, val * 1000);
2319         if (azx_has_pm_runtime(chip) || hda->use_vga_switcheroo)
2320                 pm_runtime_put_autosuspend(&pci->dev);
2321
2322 out_free:
2323         if ((chip->driver_caps & AZX_DCAPS_I915_POWERWELL)
2324                 && !hda->need_i915_power)
2325                 snd_hdac_display_power(bus, false);
2326
2327 i915_power_fail:
2328         if (err < 0)
2329                 hda->init_failed = 1;
2330         complete_all(&hda->probe_wait);
2331         return err;
2332 }
2333
2334 static void azx_remove(struct pci_dev *pci)
2335 {
2336         struct snd_card *card = pci_get_drvdata(pci);
2337         struct azx *chip;
2338         struct hda_intel *hda;
2339
2340         if (card) {
2341                 /* cancel the pending probing work */
2342                 chip = card->private_data;
2343                 hda = container_of(chip, struct hda_intel, chip);
2344                 /* FIXME: below is an ugly workaround.
2345                  * Both device_release_driver() and driver_probe_device()
2346                  * take *both* the device's and its parent's lock before
2347                  * calling the remove() and probe() callbacks.  The codec
2348                  * probe takes the locks of both the codec itself and its
2349                  * parent, i.e. the PCI controller dev.  Meanwhile, when
2350                  * the PCI controller is unbound, it takes its lock, too
2351                  * ==> ouch, a deadlock!
2352                  * As a workaround, we unlock temporarily here the controller
2353                  * device during cancel_work_sync() call.
2354                  */
2355                 device_unlock(&pci->dev);
2356                 cancel_work_sync(&hda->probe_work);
2357                 device_lock(&pci->dev);
2358
2359                 snd_card_free(card);
2360         }
2361 }
2362
2363 static void azx_shutdown(struct pci_dev *pci)
2364 {
2365         struct snd_card *card = pci_get_drvdata(pci);
2366         struct azx *chip;
2367
2368         if (!card)
2369                 return;
2370         chip = card->private_data;
2371         if (chip && chip->running)
2372                 azx_stop_chip(chip);
2373 }
2374
2375 /* PCI IDs */
2376 static const struct pci_device_id azx_ids[] = {
2377         /* CPT */
2378         { PCI_DEVICE(0x8086, 0x1c20),
2379           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2380         /* PBG */
2381         { PCI_DEVICE(0x8086, 0x1d20),
2382           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2383         /* Panther Point */
2384         { PCI_DEVICE(0x8086, 0x1e20),
2385           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
2386         /* Lynx Point */
2387         { PCI_DEVICE(0x8086, 0x8c20),
2388           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2389         /* 9 Series */
2390         { PCI_DEVICE(0x8086, 0x8ca0),
2391           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2392         /* Wellsburg */
2393         { PCI_DEVICE(0x8086, 0x8d20),
2394           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2395         { PCI_DEVICE(0x8086, 0x8d21),
2396           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2397         /* Lewisburg */
2398         { PCI_DEVICE(0x8086, 0xa1f0),
2399           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2400         { PCI_DEVICE(0x8086, 0xa270),
2401           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
2402         /* Lynx Point-LP */
2403         { PCI_DEVICE(0x8086, 0x9c20),
2404           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2405         /* Lynx Point-LP */
2406         { PCI_DEVICE(0x8086, 0x9c21),
2407           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2408         /* Wildcat Point-LP */
2409         { PCI_DEVICE(0x8086, 0x9ca0),
2410           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
2411         /* Sunrise Point */
2412         { PCI_DEVICE(0x8086, 0xa170),
2413           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2414         /* Sunrise Point-LP */
2415         { PCI_DEVICE(0x8086, 0x9d70),
2416           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2417         /* Kabylake */
2418         { PCI_DEVICE(0x8086, 0xa171),
2419           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2420         /* Kabylake-LP */
2421         { PCI_DEVICE(0x8086, 0x9d71),
2422           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2423         /* Kabylake-H */
2424         { PCI_DEVICE(0x8086, 0xa2f0),
2425           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE },
2426         /* Coffelake */
2427         { PCI_DEVICE(0x8086, 0xa348),
2428           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2429         /* Cannonlake */
2430         { PCI_DEVICE(0x8086, 0x9dc8),
2431           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_SKYLAKE},
2432         /* Broxton-P(Apollolake) */
2433         { PCI_DEVICE(0x8086, 0x5a98),
2434           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2435         /* Broxton-T */
2436         { PCI_DEVICE(0x8086, 0x1a98),
2437           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2438         /* Gemini-Lake */
2439         { PCI_DEVICE(0x8086, 0x3198),
2440           .driver_data = AZX_DRIVER_SKL | AZX_DCAPS_INTEL_BROXTON },
2441         /* Haswell */
2442         { PCI_DEVICE(0x8086, 0x0a0c),
2443           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2444         { PCI_DEVICE(0x8086, 0x0c0c),
2445           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2446         { PCI_DEVICE(0x8086, 0x0d0c),
2447           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_HASWELL },
2448         /* Broadwell */
2449         { PCI_DEVICE(0x8086, 0x160c),
2450           .driver_data = AZX_DRIVER_HDMI | AZX_DCAPS_INTEL_BROADWELL },
2451         /* 5 Series/3400 */
2452         { PCI_DEVICE(0x8086, 0x3b56),
2453           .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_NOPM },
2454         /* Poulsbo */
2455         { PCI_DEVICE(0x8086, 0x811b),
2456           .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2457         /* Oaktrail */
2458         { PCI_DEVICE(0x8086, 0x080a),
2459           .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH_BASE },
2460         /* BayTrail */
2461         { PCI_DEVICE(0x8086, 0x0f04),
2462           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BAYTRAIL },
2463         /* Braswell */
2464         { PCI_DEVICE(0x8086, 0x2284),
2465           .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_BRASWELL },
2466         /* ICH6 */
2467         { PCI_DEVICE(0x8086, 0x2668),
2468           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2469         /* ICH7 */
2470         { PCI_DEVICE(0x8086, 0x27d8),
2471           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2472         /* ESB2 */
2473         { PCI_DEVICE(0x8086, 0x269a),
2474           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2475         /* ICH8 */
2476         { PCI_DEVICE(0x8086, 0x284b),
2477           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2478         /* ICH9 */
2479         { PCI_DEVICE(0x8086, 0x293e),
2480           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2481         /* ICH9 */
2482         { PCI_DEVICE(0x8086, 0x293f),
2483           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2484         /* ICH10 */
2485         { PCI_DEVICE(0x8086, 0x3a3e),
2486           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2487         /* ICH10 */
2488         { PCI_DEVICE(0x8086, 0x3a6e),
2489           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_INTEL_ICH },
2490         /* Generic Intel */
2491         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_ANY_ID),
2492           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2493           .class_mask = 0xffffff,
2494           .driver_data = AZX_DRIVER_ICH | AZX_DCAPS_NO_ALIGN_BUFSIZE },
2495         /* ATI SB 450/600/700/800/900 */
2496         { PCI_DEVICE(0x1002, 0x437b),
2497           .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2498         { PCI_DEVICE(0x1002, 0x4383),
2499           .driver_data = AZX_DRIVER_ATI | AZX_DCAPS_PRESET_ATI_SB },
2500         /* AMD Hudson */
2501         { PCI_DEVICE(0x1022, 0x780d),
2502           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2503         /* AMD Raven */
2504         { PCI_DEVICE(0x1022, 0x15e3),
2505           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
2506         /* ATI HDMI */
2507         { PCI_DEVICE(0x1002, 0x0002),
2508           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2509         { PCI_DEVICE(0x1002, 0x1308),
2510           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2511         { PCI_DEVICE(0x1002, 0x157a),
2512           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2513         { PCI_DEVICE(0x1002, 0x15b3),
2514           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2515         { PCI_DEVICE(0x1002, 0x793b),
2516           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2517         { PCI_DEVICE(0x1002, 0x7919),
2518           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2519         { PCI_DEVICE(0x1002, 0x960f),
2520           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2521         { PCI_DEVICE(0x1002, 0x970f),
2522           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2523         { PCI_DEVICE(0x1002, 0x9840),
2524           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2525         { PCI_DEVICE(0x1002, 0xaa00),
2526           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2527         { PCI_DEVICE(0x1002, 0xaa08),
2528           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2529         { PCI_DEVICE(0x1002, 0xaa10),
2530           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2531         { PCI_DEVICE(0x1002, 0xaa18),
2532           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2533         { PCI_DEVICE(0x1002, 0xaa20),
2534           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2535         { PCI_DEVICE(0x1002, 0xaa28),
2536           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2537         { PCI_DEVICE(0x1002, 0xaa30),
2538           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2539         { PCI_DEVICE(0x1002, 0xaa38),
2540           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2541         { PCI_DEVICE(0x1002, 0xaa40),
2542           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2543         { PCI_DEVICE(0x1002, 0xaa48),
2544           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2545         { PCI_DEVICE(0x1002, 0xaa50),
2546           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2547         { PCI_DEVICE(0x1002, 0xaa58),
2548           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2549         { PCI_DEVICE(0x1002, 0xaa60),
2550           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2551         { PCI_DEVICE(0x1002, 0xaa68),
2552           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2553         { PCI_DEVICE(0x1002, 0xaa80),
2554           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2555         { PCI_DEVICE(0x1002, 0xaa88),
2556           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2557         { PCI_DEVICE(0x1002, 0xaa90),
2558           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2559         { PCI_DEVICE(0x1002, 0xaa98),
2560           .driver_data = AZX_DRIVER_ATIHDMI | AZX_DCAPS_PRESET_ATI_HDMI },
2561         { PCI_DEVICE(0x1002, 0x9902),
2562           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2563         { PCI_DEVICE(0x1002, 0xaaa0),
2564           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2565         { PCI_DEVICE(0x1002, 0xaaa8),
2566           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2567         { PCI_DEVICE(0x1002, 0xaab0),
2568           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2569         { PCI_DEVICE(0x1002, 0xaac0),
2570           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2571         { PCI_DEVICE(0x1002, 0xaac8),
2572           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2573         { PCI_DEVICE(0x1002, 0xaad8),
2574           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2575         { PCI_DEVICE(0x1002, 0xaae8),
2576           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2577         { PCI_DEVICE(0x1002, 0xaae0),
2578           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2579         { PCI_DEVICE(0x1002, 0xaaf0),
2580           .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },
2581         /* VIA VT8251/VT8237A */
2582         { PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2583         /* VIA GFX VT7122/VX900 */
2584         { PCI_DEVICE(0x1106, 0x9170), .driver_data = AZX_DRIVER_GENERIC },
2585         /* VIA GFX VT6122/VX11 */
2586         { PCI_DEVICE(0x1106, 0x9140), .driver_data = AZX_DRIVER_GENERIC },
2587         /* SIS966 */
2588         { PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2589         /* ULI M5461 */
2590         { PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2591         /* NVIDIA MCP */
2592         { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2593           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2594           .class_mask = 0xffffff,
2595           .driver_data = AZX_DRIVER_NVIDIA | AZX_DCAPS_PRESET_NVIDIA },
2596         /* Teradici */
2597         { PCI_DEVICE(0x6549, 0x1200),
2598           .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2599         { PCI_DEVICE(0x6549, 0x2200),
2600           .driver_data = AZX_DRIVER_TERA | AZX_DCAPS_NO_64BIT },
2601         /* Creative X-Fi (CA0110-IBG) */
2602         /* CTHDA chips */
2603         { PCI_DEVICE(0x1102, 0x0010),
2604           .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2605         { PCI_DEVICE(0x1102, 0x0012),
2606           .driver_data = AZX_DRIVER_CTHDA | AZX_DCAPS_PRESET_CTHDA },
2607 #if !IS_ENABLED(CONFIG_SND_CTXFI)
2608         /* the following entry conflicts with snd-ctxfi driver,
2609          * as ctxfi driver mutates from HD-audio to native mode with
2610          * a special command sequence.
2611          */
2612         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2613           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2614           .class_mask = 0xffffff,
2615           .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2616           AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2617 #else
2618         /* this entry seems still valid -- i.e. without emu20kx chip */
2619         { PCI_DEVICE(0x1102, 0x0009),
2620           .driver_data = AZX_DRIVER_CTX | AZX_DCAPS_CTX_WORKAROUND |
2621           AZX_DCAPS_NO_64BIT | AZX_DCAPS_POSFIX_LPIB },
2622 #endif
2623         /* CM8888 */
2624         { PCI_DEVICE(0x13f6, 0x5011),
2625           .driver_data = AZX_DRIVER_CMEDIA |
2626           AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_SNOOP_OFF },
2627         /* Vortex86MX */
2628         { PCI_DEVICE(0x17f3, 0x3010), .driver_data = AZX_DRIVER_GENERIC },
2629         /* VMware HDAudio */
2630         { PCI_DEVICE(0x15ad, 0x1977), .driver_data = AZX_DRIVER_GENERIC },
2631         /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2632         { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2633           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2634           .class_mask = 0xffffff,
2635           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2636         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2637           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2638           .class_mask = 0xffffff,
2639           .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_HDMI },
2640         { 0, }
2641 };
2642 MODULE_DEVICE_TABLE(pci, azx_ids);
2643
2644 /* pci_driver definition */
2645 static struct pci_driver azx_driver = {
2646         .name = KBUILD_MODNAME,
2647         .id_table = azx_ids,
2648         .probe = azx_probe,
2649         .remove = azx_remove,
2650         .shutdown = azx_shutdown,
2651         .driver = {
2652                 .pm = AZX_PM_OPS,
2653         },
2654 };
2655
2656 module_pci_driver(azx_driver);