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