drivers/gpu/drm/nouveau/dispnv50/disp.c

   1 /*
   2  * Copyright 2011 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24 #include "disp.h"
  25 #include "atom.h"
  26 #include "core.h"
  27 #include "head.h"
  28 #include "wndw.h"
  29 #include "handles.h"
  30
  31 #include <linux/dma-mapping.h>
  32 #include <linux/hdmi.h>
  33 #include <linux/component.h>
  34
  35 #include <drm/drm_atomic.h>
  36 #include <drm/drm_atomic_helper.h>
  37 #include <drm/drm_dp_helper.h>
  38 #include <drm/drm_edid.h>
  39 #include <drm/drm_fb_helper.h>
  40 #include <drm/drm_plane_helper.h>
  41 #include <drm/drm_probe_helper.h>
  42 #include <drm/drm_scdc_helper.h>
  43 #include <drm/drm_vblank.h>
  44
  45 #include <nvif/push507c.h>
  46
  47 #include <nvif/class.h>
  48 #include <nvif/cl0002.h>
  49 #include <nvif/cl5070.h>
  50 #include <nvif/cl507d.h>
  51 #include <nvif/event.h>
  52 #include <nvif/timer.h>
  53
  54 #include <nvhw/class/cl507c.h>
  55 #include <nvhw/class/cl507d.h>
  56 #include <nvhw/class/cl837d.h>
  57 #include <nvhw/class/cl887d.h>
  58 #include <nvhw/class/cl907d.h>
  59 #include <nvhw/class/cl917d.h>
  60
  61 #include "nouveau_drv.h"
  62 #include "nouveau_dma.h"
  63 #include "nouveau_gem.h"
  64 #include "nouveau_connector.h"
  65 #include "nouveau_encoder.h"
  66 #include "nouveau_fence.h"
  67 #include "nouveau_fbcon.h"
  68
  69 #include <subdev/bios/dp.h>
  70
  71 /******************************************************************************
  72  * EVO channel
  73  *****************************************************************************/
  74
  75 static int
  76 nv50_chan_create(struct nvif_device *device, struct nvif_object *disp,
  77                  const s32 *oclass, u8 head, void *data, u32 size,
  78                  struct nv50_chan *chan)
  79 {
  80         struct nvif_sclass *sclass;
  81         int ret, i, n;
  82
  83         chan->device = device;
  84
  85         ret = n = nvif_object_sclass_get(disp, &sclass);
  86         if (ret < 0)
  87                 return ret;
  88
  89         while (oclass[0]) {
  90                 for (i = 0; i < n; i++) {
  91                         if (sclass[i].oclass == oclass[0]) {
  92                                 ret = nvif_object_ctor(disp, "kmsChan", 0,
  93                                                        oclass[0], data, size,
  94                                                        &chan->user);
  95                                 if (ret == 0)
  96                                         nvif_object_map(&chan->user, NULL, 0);
  97                                 nvif_object_sclass_put(&sclass);
  98                                 return ret;
  99                         }
 100                 }
 101                 oclass++;
 102         }
 103
 104         nvif_object_sclass_put(&sclass);
 105         return -ENOSYS;
 106 }
 107
 108 static void
 109 nv50_chan_destroy(struct nv50_chan *chan)
 110 {
 111         nvif_object_dtor(&chan->user);
 112 }
 113
 114 /******************************************************************************
 115  * DMA EVO channel
 116  *****************************************************************************/
 117
 118 void
 119 nv50_dmac_destroy(struct nv50_dmac *dmac)
 120 {
 121         nvif_object_dtor(&dmac->vram);
 122         nvif_object_dtor(&dmac->sync);
 123
 124         nv50_chan_destroy(&dmac->base);
 125
 126         nvif_mem_dtor(&dmac->_push.mem);
 127 }
 128
 129 static void
 130 nv50_dmac_kick(struct nvif_push *push)
 131 {
 132         struct nv50_dmac *dmac = container_of(push, typeof(*dmac), _push);
 133
 134         dmac->cur = push->cur - (u32 *)dmac->_push.mem.object.map.ptr;
 135         if (dmac->put != dmac->cur) {
 136                 /* Push buffer fetches are not coherent with BAR1, we need to ensure
 137                  * writes have been flushed right through to VRAM before writing PUT.
 138                  */
 139                 if (dmac->push->mem.type & NVIF_MEM_VRAM) {
 140                         struct nvif_device *device = dmac->base.device;
 141                         nvif_wr32(&device->object, 0x070000, 0x00000001);
 142                         nvif_msec(device, 2000,
 143                                 if (!(nvif_rd32(&device->object, 0x070000) & 0x00000002))
 144                                         break;
 145                         );
 146                 }
 147
 148                 NVIF_WV32(&dmac->base.user, NV507C, PUT, PTR, dmac->cur);
 149                 dmac->put = dmac->cur;
 150         }
 151
 152         push->bgn = push->cur;
 153 }
 154
 155 static int
 156 nv50_dmac_free(struct nv50_dmac *dmac)
 157 {
 158         u32 get = NVIF_RV32(&dmac->base.user, NV507C, GET, PTR);
 159         if (get > dmac->cur) /* NVIDIA stay 5 away from GET, do the same. */
 160                 return get - dmac->cur - 5;
 161         return dmac->max - dmac->cur;
 162 }
 163
 164 static int
 165 nv50_dmac_wind(struct nv50_dmac *dmac)
 166 {
 167         /* Wait for GET to depart from the beginning of the push buffer to
 168          * prevent writing PUT == GET, which would be ignored by HW.
 169          */
 170         u32 get = NVIF_RV32(&dmac->base.user, NV507C, GET, PTR);
 171         if (get == 0) {
 172                 /* Corner-case, HW idle, but non-committed work pending. */
 173                 if (dmac->put == 0)
 174                         nv50_dmac_kick(dmac->push);
 175
 176                 if (nvif_msec(dmac->base.device, 2000,
 177                         if (NVIF_TV32(&dmac->base.user, NV507C, GET, PTR, >, 0))
 178                                 break;
 179                 ) < 0)
 180                         return -ETIMEDOUT;
 181         }
 182
 183         PUSH_RSVD(dmac->push, PUSH_JUMP(dmac->push, 0));
 184         dmac->cur = 0;
 185         return 0;
 186 }
 187
 188 static int
 189 nv50_dmac_wait(struct nvif_push *push, u32 size)
 190 {
 191         struct nv50_dmac *dmac = container_of(push, typeof(*dmac), _push);
 192         int free;
 193
 194         if (WARN_ON(size > dmac->max))
 195                 return -EINVAL;
 196
 197         dmac->cur = push->cur - (u32 *)dmac->_push.mem.object.map.ptr;
 198         if (dmac->cur + size >= dmac->max) {
 199                 int ret = nv50_dmac_wind(dmac);
 200                 if (ret)
 201                         return ret;
 202
 203                 push->cur = dmac->_push.mem.object.map.ptr;
 204                 push->cur = push->cur + dmac->cur;
 205                 nv50_dmac_kick(push);
 206         }
 207
 208         if (nvif_msec(dmac->base.device, 2000,
 209                 if ((free = nv50_dmac_free(dmac)) >= size)
 210                         break;
 211         ) < 0) {
 212                 WARN_ON(1);
 213                 return -ETIMEDOUT;
 214         }
 215
 216         push->bgn = dmac->_push.mem.object.map.ptr;
 217         push->bgn = push->bgn + dmac->cur;
 218         push->cur = push->bgn;
 219         push->end = push->cur + free;
 220         return 0;
 221 }
 222
 223 MODULE_PARM_DESC(kms_vram_pushbuf, "Place EVO/NVD push buffers in VRAM (default: auto)");
 224 static int nv50_dmac_vram_pushbuf = -1;
 225 module_param_named(kms_vram_pushbuf, nv50_dmac_vram_pushbuf, int, 0400);
 226
 227 int
 228 nv50_dmac_create(struct nvif_device *device, struct nvif_object *disp,
 229                  const s32 *oclass, u8 head, void *data, u32 size, s64 syncbuf,
 230                  struct nv50_dmac *dmac)
 231 {
 232         struct nouveau_cli *cli = (void *)device->object.client;
 233         struct nv50_disp_core_channel_dma_v0 *args = data;
 234         u8 type = NVIF_MEM_COHERENT;
 235         int ret;
 236
 237         mutex_init(&dmac->lock);
 238
 239         /* Pascal added support for 47-bit physical addresses, but some
 240          * parts of EVO still only accept 40-bit PAs.
 241          *
 242          * To avoid issues on systems with large amounts of RAM, and on
 243          * systems where an IOMMU maps pages at a high address, we need
 244          * to allocate push buffers in VRAM instead.
 245          *
 246          * This appears to match NVIDIA's behaviour on Pascal.
 247          */
 248         if ((nv50_dmac_vram_pushbuf > 0) ||
 249             (nv50_dmac_vram_pushbuf < 0 && device->info.family == NV_DEVICE_INFO_V0_PASCAL))
 250                 type |= NVIF_MEM_VRAM;
 251
 252         ret = nvif_mem_ctor_map(&cli->mmu, "kmsChanPush", type, 0x1000,
 253                                 &dmac->_push.mem);
 254         if (ret)
 255                 return ret;
 256
 257         dmac->ptr = dmac->_push.mem.object.map.ptr;
 258         dmac->_push.wait = nv50_dmac_wait;
 259         dmac->_push.kick = nv50_dmac_kick;
 260         dmac->push = &dmac->_push;
 261         dmac->push->bgn = dmac->_push.mem.object.map.ptr;
 262         dmac->push->cur = dmac->push->bgn;
 263         dmac->push->end = dmac->push->bgn;
 264         dmac->max = 0x1000/4 - 1;
 265
 266         /* EVO channels are affected by a HW bug where the last 12 DWORDs
 267          * of the push buffer aren't able to be used safely.
 268          */
 269         if (disp->oclass < GV100_DISP)
 270                 dmac->max -= 12;
 271
 272         args->pushbuf = nvif_handle(&dmac->_push.mem.object);
 273
 274         ret = nv50_chan_create(device, disp, oclass, head, data, size,
 275                                &dmac->base);
 276         if (ret)
 277                 return ret;
 278
 279         if (syncbuf < 0)
 280                 return 0;
 281
 282         ret = nvif_object_ctor(&dmac->base.user, "kmsSyncCtxDma", NV50_DISP_HANDLE_SYNCBUF,
 283                                NV_DMA_IN_MEMORY,
 284                                &(struct nv_dma_v0) {
 285                                         .target = NV_DMA_V0_TARGET_VRAM,
 286                                         .access = NV_DMA_V0_ACCESS_RDWR,
 287                                         .start = syncbuf + 0x0000,
 288                                         .limit = syncbuf + 0x0fff,
 289                                }, sizeof(struct nv_dma_v0),
 290                                &dmac->sync);
 291         if (ret)
 292                 return ret;
 293
 294         ret = nvif_object_ctor(&dmac->base.user, "kmsVramCtxDma", NV50_DISP_HANDLE_VRAM,
 295                                NV_DMA_IN_MEMORY,
 296                                &(struct nv_dma_v0) {
 297                                         .target = NV_DMA_V0_TARGET_VRAM,
 298                                         .access = NV_DMA_V0_ACCESS_RDWR,
 299                                         .start = 0,
 300                                         .limit = device->info.ram_user - 1,
 301                                }, sizeof(struct nv_dma_v0),
 302                                &dmac->vram);
 303         if (ret)
 304                 return ret;
 305
 306         return ret;
 307 }
 308
 309 /******************************************************************************
 310  * Output path helpers
 311  *****************************************************************************/
 312 static void
 313 nv50_outp_dump_caps(struct nouveau_drm *drm,
 314                     struct nouveau_encoder *outp)
 315 {
 316         NV_DEBUG(drm, "%s caps: dp_interlace=%d\n",
 317                  outp->base.base.name, outp->caps.dp_interlace);
 318 }
 319
 320 static void
 321 nv50_outp_release(struct nouveau_encoder *nv_encoder)
 322 {
 323         struct nv50_disp *disp = nv50_disp(nv_encoder->base.base.dev);
 324         struct {
 325                 struct nv50_disp_mthd_v1 base;
 326         } args = {
 327                 .base.version = 1,
 328                 .base.method = NV50_DISP_MTHD_V1_RELEASE,
 329                 .base.hasht  = nv_encoder->dcb->hasht,
 330                 .base.hashm  = nv_encoder->dcb->hashm,
 331         };
 332
 333         nvif_mthd(&disp->disp->object, 0, &args, sizeof(args));
 334         nv_encoder->or = -1;
 335         nv_encoder->link = 0;
 336 }
 337
 338 static int
 339 nv50_outp_acquire(struct nouveau_encoder *nv_encoder, bool hda)
 340 {
 341         struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev);
 342         struct nv50_disp *disp = nv50_disp(drm->dev);
 343         struct {
 344                 struct nv50_disp_mthd_v1 base;
 345                 struct nv50_disp_acquire_v0 info;
 346         } args = {
 347                 .base.version = 1,
 348                 .base.method = NV50_DISP_MTHD_V1_ACQUIRE,
 349                 .base.hasht  = nv_encoder->dcb->hasht,
 350                 .base.hashm  = nv_encoder->dcb->hashm,
 351                 .info.hda = hda,
 352         };
 353         int ret;
 354
 355         ret = nvif_mthd(&disp->disp->object, 0, &args, sizeof(args));
 356         if (ret) {
 357                 NV_ERROR(drm, "error acquiring output path: %d\n", ret);
 358                 return ret;
 359         }
 360
 361         nv_encoder->or = args.info.or;
 362         nv_encoder->link = args.info.link;
 363         return 0;
 364 }
 365
 366 static int
 367 nv50_outp_atomic_check_view(struct drm_encoder *encoder,
 368                             struct drm_crtc_state *crtc_state,
 369                             struct drm_connector_state *conn_state,
 370                             struct drm_display_mode *native_mode)
 371 {
 372         struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
 373         struct drm_display_mode *mode = &crtc_state->mode;
 374         struct drm_connector *connector = conn_state->connector;
 375         struct nouveau_conn_atom *asyc = nouveau_conn_atom(conn_state);
 376         struct nouveau_drm *drm = nouveau_drm(encoder->dev);
 377
 378         NV_ATOMIC(drm, "%s atomic_check\n", encoder->name);
 379         asyc->scaler.full = false;
 380         if (!native_mode)
 381                 return 0;
 382
 383         if (asyc->scaler.mode == DRM_MODE_SCALE_NONE) {
 384                 switch (connector->connector_type) {
 385                 case DRM_MODE_CONNECTOR_LVDS:
 386                 case DRM_MODE_CONNECTOR_eDP:
 387                         /* Don't force scaler for EDID modes with
 388                          * same size as the native one (e.g. different
 389                          * refresh rate)
 390                          */
 391                         if (mode->hdisplay == native_mode->hdisplay &&
 392                             mode->vdisplay == native_mode->vdisplay &&
 393                             mode->type & DRM_MODE_TYPE_DRIVER)
 394                                 break;
 395                         mode = native_mode;
 396                         asyc->scaler.full = true;
 397                         break;
 398                 default:
 399                         break;
 400                 }
 401         } else {
 402                 mode = native_mode;
 403         }
 404
 405         if (!drm_mode_equal(adjusted_mode, mode)) {
 406                 drm_mode_copy(adjusted_mode, mode);
 407                 crtc_state->mode_changed = true;
 408         }
 409
 410         return 0;
 411 }
 412
 413 static int
 414 nv50_outp_atomic_check(struct drm_encoder *encoder,
 415                        struct drm_crtc_state *crtc_state,
 416                        struct drm_connector_state *conn_state)
 417 {
 418         struct drm_connector *connector = conn_state->connector;
 419         struct nouveau_connector *nv_connector = nouveau_connector(connector);
 420         struct nv50_head_atom *asyh = nv50_head_atom(crtc_state);
 421         int ret;
 422
 423         ret = nv50_outp_atomic_check_view(encoder, crtc_state, conn_state,
 424                                           nv_connector->native_mode);
 425         if (ret)
 426                 return ret;
 427
 428         if (crtc_state->mode_changed || crtc_state->connectors_changed)
 429                 asyh->or.bpc = connector->display_info.bpc;
 430
 431         return 0;
 432 }
 433
 434 struct nouveau_connector *
 435 nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp)
 436 {
 437         struct drm_connector *connector;
 438         struct drm_connector_state *connector_state;
 439         struct drm_encoder *encoder = to_drm_encoder(outp);
 440         int i;
 441
 442         for_each_new_connector_in_state(state, connector, connector_state, i) {
 443                 if (connector_state->best_encoder == encoder)
 444                         return nouveau_connector(connector);
 445         }
 446
 447         return NULL;
 448 }
 449
 450 struct nouveau_connector *
 451 nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp)
 452 {
 453         struct drm_connector *connector;
 454         struct drm_connector_state *connector_state;
 455         struct drm_encoder *encoder = to_drm_encoder(outp);
 456         int i;
 457
 458         for_each_old_connector_in_state(state, connector, connector_state, i) {
 459                 if (connector_state->best_encoder == encoder)
 460                         return nouveau_connector(connector);
 461         }
 462
 463         return NULL;
 464 }
 465
 466 static struct nouveau_crtc *
 467 nv50_outp_get_new_crtc(const struct drm_atomic_state *state, const struct nouveau_encoder *outp)
 468 {
 469         struct drm_crtc *crtc;
 470         struct drm_crtc_state *crtc_state;
 471         const u32 mask = drm_encoder_mask(&outp->base.base);
 472         int i;
 473
 474         for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
 475                 if (crtc_state->encoder_mask & mask)
 476                         return nouveau_crtc(crtc);
 477         }
 478
 479         return NULL;
 480 }
 481
 482 /******************************************************************************
 483  * DAC
 484  *****************************************************************************/
 485 static void
 486 nv50_dac_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *state)
 487 {
 488         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 489         struct nv50_core *core = nv50_disp(encoder->dev)->core;
 490         const u32 ctrl = NVDEF(NV507D, DAC_SET_CONTROL, OWNER, NONE);
 491
 492         core->func->dac->ctrl(core, nv_encoder->or, ctrl, NULL);
 493         nv_encoder->crtc = NULL;
 494         nv50_outp_release(nv_encoder);
 495 }
 496
 497 static void
 498 nv50_dac_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state)
 499 {
 500         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 501         struct nouveau_crtc *nv_crtc = nv50_outp_get_new_crtc(state, nv_encoder);
 502         struct nv50_head_atom *asyh =
 503                 nv50_head_atom(drm_atomic_get_new_crtc_state(state, &nv_crtc->base));
 504         struct nv50_core *core = nv50_disp(encoder->dev)->core;
 505         u32 ctrl = 0;
 506
 507         switch (nv_crtc->index) {
 508         case 0: ctrl |= NVDEF(NV507D, DAC_SET_CONTROL, OWNER, HEAD0); break;
 509         case 1: ctrl |= NVDEF(NV507D, DAC_SET_CONTROL, OWNER, HEAD1); break;
 510         case 2: ctrl |= NVDEF(NV907D, DAC_SET_CONTROL, OWNER_MASK, HEAD2); break;
 511         case 3: ctrl |= NVDEF(NV907D, DAC_SET_CONTROL, OWNER_MASK, HEAD3); break;
 512         default:
 513                 WARN_ON(1);
 514                 break;
 515         }
 516
 517         ctrl |= NVDEF(NV507D, DAC_SET_CONTROL, PROTOCOL, RGB_CRT);
 518
 519         nv50_outp_acquire(nv_encoder, false);
 520
 521         core->func->dac->ctrl(core, nv_encoder->or, ctrl, asyh);
 522         asyh->or.depth = 0;
 523
 524         nv_encoder->crtc = &nv_crtc->base;
 525 }
 526
 527 static enum drm_connector_status
 528 nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector)
 529 {
 530         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 531         struct nv50_disp *disp = nv50_disp(encoder->dev);
 532         struct {
 533                 struct nv50_disp_mthd_v1 base;
 534                 struct nv50_disp_dac_load_v0 load;
 535         } args = {
 536                 .base.version = 1,
 537                 .base.method = NV50_DISP_MTHD_V1_DAC_LOAD,
 538                 .base.hasht  = nv_encoder->dcb->hasht,
 539                 .base.hashm  = nv_encoder->dcb->hashm,
 540         };
 541         int ret;
 542
 543         args.load.data = nouveau_drm(encoder->dev)->vbios.dactestval;
 544         if (args.load.data == 0)
 545                 args.load.data = 340;
 546
 547         ret = nvif_mthd(&disp->disp->object, 0, &args, sizeof(args));
 548         if (ret || !args.load.load)
 549                 return connector_status_disconnected;
 550
 551         return connector_status_connected;
 552 }
 553
 554 static const struct drm_encoder_helper_funcs
 555 nv50_dac_help = {
 556         .atomic_check = nv50_outp_atomic_check,
 557         .atomic_enable = nv50_dac_atomic_enable,
 558         .atomic_disable = nv50_dac_atomic_disable,
 559         .detect = nv50_dac_detect
 560 };
 561
 562 static void
 563 nv50_dac_destroy(struct drm_encoder *encoder)
 564 {
 565         drm_encoder_cleanup(encoder);
 566         kfree(encoder);
 567 }
 568
 569 static const struct drm_encoder_funcs
 570 nv50_dac_func = {
 571         .destroy = nv50_dac_destroy,
 572 };
 573
 574 static int
 575 nv50_dac_create(struct drm_connector *connector, struct dcb_output *dcbe)
 576 {
 577         struct nouveau_drm *drm = nouveau_drm(connector->dev);
 578         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 579         struct nvkm_i2c_bus *bus;
 580         struct nouveau_encoder *nv_encoder;
 581         struct drm_encoder *encoder;
 582         int type = DRM_MODE_ENCODER_DAC;
 583
 584         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 585         if (!nv_encoder)
 586                 return -ENOMEM;
 587         nv_encoder->dcb = dcbe;
 588
 589         bus = nvkm_i2c_bus_find(i2c, dcbe->i2c_index);
 590         if (bus)
 591                 nv_encoder->i2c = &bus->i2c;
 592
 593         encoder = to_drm_encoder(nv_encoder);
 594         encoder->possible_crtcs = dcbe->heads;
 595         encoder->possible_clones = 0;
 596         drm_encoder_init(connector->dev, encoder, &nv50_dac_func, type,
 597                          "dac-%04x-%04x", dcbe->hasht, dcbe->hashm);
 598         drm_encoder_helper_add(encoder, &nv50_dac_help);
 599
 600         drm_connector_attach_encoder(connector, encoder);
 601         return 0;
 602 }
 603
 604 /*
 605  * audio component binding for ELD notification
 606  */
 607 static void
 608 nv50_audio_component_eld_notify(struct drm_audio_component *acomp, int port,
 609                                 int dev_id)
 610 {
 611         if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
 612                 acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,
 613                                                  port, dev_id);
 614 }
 615
 616 static int
 617 nv50_audio_component_get_eld(struct device *kdev, int port, int dev_id,
 618                              bool *enabled, unsigned char *buf, int max_bytes)
 619 {
 620         struct drm_device *drm_dev = dev_get_drvdata(kdev);
 621         struct nouveau_drm *drm = nouveau_drm(drm_dev);
 622         struct drm_encoder *encoder;
 623         struct nouveau_encoder *nv_encoder;
 624         struct nouveau_crtc *nv_crtc;
 625         int ret = 0;
 626
 627         *enabled = false;
 628
 629         mutex_lock(&drm->audio.lock);
 630
 631         drm_for_each_encoder(encoder, drm->dev) {
 632                 struct nouveau_connector *nv_connector = NULL;
 633
 634                 if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
 635                         continue; /* TODO */
 636
 637                 nv_encoder = nouveau_encoder(encoder);
 638                 nv_connector = nouveau_connector(nv_encoder->audio.connector);
 639                 nv_crtc = nouveau_crtc(nv_encoder->crtc);
 640
 641                 if (!nv_crtc || nv_encoder->or != port || nv_crtc->index != dev_id)
 642                         continue;
 643
 644                 *enabled = nv_encoder->audio.enabled;
 645                 if (*enabled) {
 646                         ret = drm_eld_size(nv_connector->base.eld);
 647                         memcpy(buf, nv_connector->base.eld,
 648                                min(max_bytes, ret));
 649                 }
 650                 break;
 651         }
 652
 653         mutex_unlock(&drm->audio.lock);
 654
 655         return ret;
 656 }
 657
 658 static const struct drm_audio_component_ops nv50_audio_component_ops = {
 659         .get_eld = nv50_audio_component_get_eld,
 660 };
 661
 662 static int
 663 nv50_audio_component_bind(struct device *kdev, struct device *hda_kdev,
 664                           void *data)
 665 {
 666         struct drm_device *drm_dev = dev_get_drvdata(kdev);
 667         struct nouveau_drm *drm = nouveau_drm(drm_dev);
 668         struct drm_audio_component *acomp = data;
 669
 670         if (WARN_ON(!device_link_add(hda_kdev, kdev, DL_FLAG_STATELESS)))
 671                 return -ENOMEM;
 672
 673         drm_modeset_lock_all(drm_dev);
 674         acomp->ops = &nv50_audio_component_ops;
 675         acomp->dev = kdev;
 676         drm->audio.component = acomp;
 677         drm_modeset_unlock_all(drm_dev);
 678         return 0;
 679 }
 680
 681 static void
 682 nv50_audio_component_unbind(struct device *kdev, struct device *hda_kdev,
 683                             void *data)
 684 {
 685         struct drm_device *drm_dev = dev_get_drvdata(kdev);
 686         struct nouveau_drm *drm = nouveau_drm(drm_dev);
 687         struct drm_audio_component *acomp = data;
 688
 689         drm_modeset_lock_all(drm_dev);
 690         drm->audio.component = NULL;
 691         acomp->ops = NULL;
 692         acomp->dev = NULL;
 693         drm_modeset_unlock_all(drm_dev);
 694 }
 695
 696 static const struct component_ops nv50_audio_component_bind_ops = {
 697         .bind   = nv50_audio_component_bind,
 698         .unbind = nv50_audio_component_unbind,
 699 };
 700
 701 static void
 702 nv50_audio_component_init(struct nouveau_drm *drm)
 703 {
 704         if (component_add(drm->dev->dev, &nv50_audio_component_bind_ops))
 705                 return;
 706
 707         drm->audio.component_registered = true;
 708         mutex_init(&drm->audio.lock);
 709 }
 710
 711 static void
 712 nv50_audio_component_fini(struct nouveau_drm *drm)
 713 {
 714         if (!drm->audio.component_registered)
 715                 return;
 716
 717         component_del(drm->dev->dev, &nv50_audio_component_bind_ops);
 718         drm->audio.component_registered = false;
 719         mutex_destroy(&drm->audio.lock);
 720 }
 721
 722 /******************************************************************************
 723  * Audio
 724  *****************************************************************************/
 725 static void
 726 nv50_audio_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc)
 727 {
 728         struct nouveau_drm *drm = nouveau_drm(encoder->dev);
 729         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 730         struct nv50_disp *disp = nv50_disp(encoder->dev);
 731         struct {
 732                 struct nv50_disp_mthd_v1 base;
 733                 struct nv50_disp_sor_hda_eld_v0 eld;
 734         } args = {
 735                 .base.version = 1,
 736                 .base.method  = NV50_DISP_MTHD_V1_SOR_HDA_ELD,
 737                 .base.hasht   = nv_encoder->dcb->hasht,
 738                 .base.hashm   = (0xf0ff & nv_encoder->dcb->hashm) |
 739                                 (0x0100 << nv_crtc->index),
 740         };
 741
 742         mutex_lock(&drm->audio.lock);
 743         if (nv_encoder->audio.enabled) {
 744                 nv_encoder->audio.enabled = false;
 745                 nv_encoder->audio.connector = NULL;
 746                 nvif_mthd(&disp->disp->object, 0, &args, sizeof(args));
 747         }
 748         mutex_unlock(&drm->audio.lock);
 749
 750         nv50_audio_component_eld_notify(drm->audio.component, nv_encoder->or,
 751                                         nv_crtc->index);
 752 }
 753
 754 static void
 755 nv50_audio_enable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc,
 756                   struct nouveau_connector *nv_connector, struct drm_atomic_state *state,
 757                   struct drm_display_mode *mode)
 758 {
 759         struct nouveau_drm *drm = nouveau_drm(encoder->dev);
 760         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 761         struct nv50_disp *disp = nv50_disp(encoder->dev);
 762         struct __packed {
 763                 struct {
 764                         struct nv50_disp_mthd_v1 mthd;
 765                         struct nv50_disp_sor_hda_eld_v0 eld;
 766                 } base;
 767                 u8 data[sizeof(nv_connector->base.eld)];
 768         } args = {
 769                 .base.mthd.version = 1,
 770                 .base.mthd.method  = NV50_DISP_MTHD_V1_SOR_HDA_ELD,
 771                 .base.mthd.hasht   = nv_encoder->dcb->hasht,
 772                 .base.mthd.hashm   = (0xf0ff & nv_encoder->dcb->hashm) |
 773                                      (0x0100 << nv_crtc->index),
 774         };
 775
 776         if (!drm_detect_monitor_audio(nv_connector->edid))
 777                 return;
 778
 779         mutex_lock(&drm->audio.lock);
 780
 781         memcpy(args.data, nv_connector->base.eld, sizeof(args.data));
 782
 783         nvif_mthd(&disp->disp->object, 0, &args,
 784                   sizeof(args.base) + drm_eld_size(args.data));
 785         nv_encoder->audio.enabled = true;
 786         nv_encoder->audio.connector = &nv_connector->base;
 787
 788         mutex_unlock(&drm->audio.lock);
 789
 790         nv50_audio_component_eld_notify(drm->audio.component, nv_encoder->or,
 791                                         nv_crtc->index);
 792 }
 793
 794 /******************************************************************************
 795  * HDMI
 796  *****************************************************************************/
 797 static void
 798 nv50_hdmi_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc)
 799 {
 800         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 801         struct nv50_disp *disp = nv50_disp(encoder->dev);
 802         struct {
 803                 struct nv50_disp_mthd_v1 base;
 804                 struct nv50_disp_sor_hdmi_pwr_v0 pwr;
 805         } args = {
 806                 .base.version = 1,
 807                 .base.method = NV50_DISP_MTHD_V1_SOR_HDMI_PWR,
 808                 .base.hasht  = nv_encoder->dcb->hasht,
 809                 .base.hashm  = (0xf0ff & nv_encoder->dcb->hashm) |
 810                                (0x0100 << nv_crtc->index),
 811         };
 812
 813         nvif_mthd(&disp->disp->object, 0, &args, sizeof(args));
 814 }
 815
 816 static void
 817 nv50_hdmi_enable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc,
 818                  struct nouveau_connector *nv_connector, struct drm_atomic_state *state,
 819                  struct drm_display_mode *mode)
 820 {
 821         struct nouveau_drm *drm = nouveau_drm(encoder->dev);
 822         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 823         struct nv50_disp *disp = nv50_disp(encoder->dev);
 824         struct {
 825                 struct nv50_disp_mthd_v1 base;
 826                 struct nv50_disp_sor_hdmi_pwr_v0 pwr;
 827                 u8 infoframes[2 * 17]; /* two frames, up to 17 bytes each */
 828         } args = {
 829                 .base.version = 1,
 830                 .base.method = NV50_DISP_MTHD_V1_SOR_HDMI_PWR,
 831                 .base.hasht  = nv_encoder->dcb->hasht,
 832                 .base.hashm  = (0xf0ff & nv_encoder->dcb->hashm) |
 833                                (0x0100 << nv_crtc->index),
 834                 .pwr.state = 1,
 835                 .pwr.rekey = 56, /* binary driver, and tegra, constant */
 836         };
 837         struct drm_hdmi_info *hdmi;
 838         u32 max_ac_packet;
 839         union hdmi_infoframe avi_frame;
 840         union hdmi_infoframe vendor_frame;
 841         bool high_tmds_clock_ratio = false, scrambling = false;
 842         u8 config;
 843         int ret;
 844         int size;
 845
 846         if (!drm_detect_hdmi_monitor(nv_connector->edid))
 847                 return;
 848
 849         hdmi = &nv_connector->base.display_info.hdmi;
 850
 851         ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame.avi,
 852                                                        &nv_connector->base, mode);
 853         if (!ret) {
 854                 /* We have an AVI InfoFrame, populate it to the display */
 855                 args.pwr.avi_infoframe_length
 856                         = hdmi_infoframe_pack(&avi_frame, args.infoframes, 17);
 857         }
 858
 859         ret = drm_hdmi_vendor_infoframe_from_display_mode(&vendor_frame.vendor.hdmi,
 860                                                           &nv_connector->base, mode);
 861         if (!ret) {
 862                 /* We have a Vendor InfoFrame, populate it to the display */
 863                 args.pwr.vendor_infoframe_length
 864                         = hdmi_infoframe_pack(&vendor_frame,
 865                                               args.infoframes
 866                                               + args.pwr.avi_infoframe_length,
 867                                               17);
 868         }
 869
 870         max_ac_packet  = mode->htotal - mode->hdisplay;
 871         max_ac_packet -= args.pwr.rekey;
 872         max_ac_packet -= 18; /* constant from tegra */
 873         args.pwr.max_ac_packet = max_ac_packet / 32;
 874
 875         if (hdmi->scdc.scrambling.supported) {
 876                 high_tmds_clock_ratio = mode->clock > 340000;
 877                 scrambling = high_tmds_clock_ratio ||
 878                         hdmi->scdc.scrambling.low_rates;
 879         }
 880
 881         args.pwr.scdc =
 882                 NV50_DISP_SOR_HDMI_PWR_V0_SCDC_SCRAMBLE * scrambling |
 883                 NV50_DISP_SOR_HDMI_PWR_V0_SCDC_DIV_BY_4 * high_tmds_clock_ratio;
 884
 885         size = sizeof(args.base)
 886                 + sizeof(args.pwr)
 887                 + args.pwr.avi_infoframe_length
 888                 + args.pwr.vendor_infoframe_length;
 889         nvif_mthd(&disp->disp->object, 0, &args, size);
 890
 891         nv50_audio_enable(encoder, nv_crtc, nv_connector, state, mode);
 892
 893         /* If SCDC is supported by the downstream monitor, update
 894          * divider / scrambling settings to what we programmed above.
 895          */
 896         if (!hdmi->scdc.scrambling.supported)
 897                 return;
 898
 899         ret = drm_scdc_readb(nv_encoder->i2c, SCDC_TMDS_CONFIG, &config);
 900         if (ret < 0) {
 901                 NV_ERROR(drm, "Failure to read SCDC_TMDS_CONFIG: %d\n", ret);
 902                 return;
 903         }
 904         config &= ~(SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 | SCDC_SCRAMBLING_ENABLE);
 905         config |= SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 * high_tmds_clock_ratio;
 906         config |= SCDC_SCRAMBLING_ENABLE * scrambling;
 907         ret = drm_scdc_writeb(nv_encoder->i2c, SCDC_TMDS_CONFIG, config);
 908         if (ret < 0)
 909                 NV_ERROR(drm, "Failure to write SCDC_TMDS_CONFIG = 0x%02x: %d\n",
 910                          config, ret);
 911 }
 912
 913 /******************************************************************************
 914  * MST
 915  *****************************************************************************/
 916 #define nv50_mstm(p) container_of((p), struct nv50_mstm, mgr)
 917 #define nv50_mstc(p) container_of((p), struct nv50_mstc, connector)
 918 #define nv50_msto(p) container_of((p), struct nv50_msto, encoder)
 919
 920 struct nv50_mstc {
 921         struct nv50_mstm *mstm;
 922         struct drm_dp_mst_port *port;
 923         struct drm_connector connector;
 924
 925         struct drm_display_mode *native;
 926         struct edid *edid;
 927 };
 928
 929 struct nv50_msto {
 930         struct drm_encoder encoder;
 931
 932         /* head is statically assigned on msto creation */
 933         struct nv50_head *head;
 934         struct nv50_mstc *mstc;
 935         bool disabled;
 936 };
 937
 938 struct nouveau_encoder *nv50_real_outp(struct drm_encoder *encoder)
 939 {
 940         struct nv50_msto *msto;
 941
 942         if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST)
 943                 return nouveau_encoder(encoder);
 944
 945         msto = nv50_msto(encoder);
 946         if (!msto->mstc)
 947                 return NULL;
 948         return msto->mstc->mstm->outp;
 949 }
 950
 951 static struct drm_dp_payload *
 952 nv50_msto_payload(struct nv50_msto *msto)
 953 {
 954         struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev);
 955         struct nv50_mstc *mstc = msto->mstc;
 956         struct nv50_mstm *mstm = mstc->mstm;
 957         int vcpi = mstc->port->vcpi.vcpi, i;
 958
 959         WARN_ON(!mutex_is_locked(&mstm->mgr.payload_lock));
 960
 961         NV_ATOMIC(drm, "%s: vcpi %d\n", msto->encoder.name, vcpi);
 962         for (i = 0; i < mstm->mgr.max_payloads; i++) {
 963                 struct drm_dp_payload *payload = &mstm->mgr.payloads[i];
 964                 NV_ATOMIC(drm, "%s: %d: vcpi %d start 0x%02x slots 0x%02x\n",
 965                           mstm->outp->base.base.name, i, payload->vcpi,
 966                           payload->start_slot, payload->num_slots);
 967         }
 968
 969         for (i = 0; i < mstm->mgr.max_payloads; i++) {
 970                 struct drm_dp_payload *payload = &mstm->mgr.payloads[i];
 971                 if (payload->vcpi == vcpi)
 972                         return payload;
 973         }
 974
 975         return NULL;
 976 }
 977
 978 static void
 979 nv50_msto_cleanup(struct nv50_msto *msto)
 980 {
 981         struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev);
 982         struct nv50_mstc *mstc = msto->mstc;
 983         struct nv50_mstm *mstm = mstc->mstm;
 984
 985         if (!msto->disabled)
 986                 return;
 987
 988         NV_ATOMIC(drm, "%s: msto cleanup\n", msto->encoder.name);
 989
 990         drm_dp_mst_deallocate_vcpi(&mstm->mgr, mstc->port);
 991
 992         msto->mstc = NULL;
 993         msto->disabled = false;
 994 }
 995
 996 static void
 997 nv50_msto_prepare(struct nv50_msto *msto)
 998 {
 999         struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev);
1000         struct nv50_mstc *mstc = msto->mstc;
1001         struct nv50_mstm *mstm = mstc->mstm;
1002         struct {
1003                 struct nv50_disp_mthd_v1 base;
1004                 struct nv50_disp_sor_dp_mst_vcpi_v0 vcpi;
1005         } args = {
1006                 .base.version = 1,
1007                 .base.method = NV50_DISP_MTHD_V1_SOR_DP_MST_VCPI,
1008                 .base.hasht  = mstm->outp->dcb->hasht,
1009                 .base.hashm  = (0xf0ff & mstm->outp->dcb->hashm) |
1010                                (0x0100 << msto->head->base.index),
1011         };
1012
1013         mutex_lock(&mstm->mgr.payload_lock);
1014
1015         NV_ATOMIC(drm, "%s: msto prepare\n", msto->encoder.name);
1016         if (mstc->port->vcpi.vcpi > 0) {
1017                 struct drm_dp_payload *payload = nv50_msto_payload(msto);
1018                 if (payload) {
1019                         args.vcpi.start_slot = payload->start_slot;
1020                         args.vcpi.num_slots = payload->num_slots;
1021                         args.vcpi.pbn = mstc->port->vcpi.pbn;
1022                         args.vcpi.aligned_pbn = mstc->port->vcpi.aligned_pbn;
1023                 }
1024         }
1025
1026         NV_ATOMIC(drm, "%s: %s: %02x %02x %04x %04x\n",
1027                   msto->encoder.name, msto->head->base.base.name,
1028                   args.vcpi.start_slot, args.vcpi.num_slots,
1029                   args.vcpi.pbn, args.vcpi.aligned_pbn);
1030
1031         nvif_mthd(&drm->display->disp.object, 0, &args, sizeof(args));
1032         mutex_unlock(&mstm->mgr.payload_lock);
1033 }
1034
1035 static int
1036 nv50_msto_atomic_check(struct drm_encoder *encoder,
1037                        struct drm_crtc_state *crtc_state,
1038                        struct drm_connector_state *conn_state)
1039 {
1040         struct drm_atomic_state *state = crtc_state->state;
1041         struct drm_connector *connector = conn_state->connector;
1042         struct nv50_mstc *mstc = nv50_mstc(connector);
1043         struct nv50_mstm *mstm = mstc->mstm;
1044         struct nv50_head_atom *asyh = nv50_head_atom(crtc_state);
1045         int slots;
1046         int ret;
1047
1048         ret = nv50_outp_atomic_check_view(encoder, crtc_state, conn_state,
1049                                           mstc->native);
1050         if (ret)
1051                 return ret;
1052
1053         if (!crtc_state->mode_changed && !crtc_state->connectors_changed)
1054                 return 0;
1055
1056         /*
1057          * When restoring duplicated states, we need to make sure that the bw
1058          * remains the same and avoid recalculating it, as the connector's bpc
1059          * may have changed after the state was duplicated
1060          */
1061         if (!state->duplicated) {
1062                 const int clock = crtc_state->adjusted_mode.clock;
1063
1064                 asyh->or.bpc = connector->display_info.bpc;
1065                 asyh->dp.pbn = drm_dp_calc_pbn_mode(clock, asyh->or.bpc * 3,
1066                                                     false);
1067         }
1068
1069         slots = drm_dp_atomic_find_vcpi_slots(state, &mstm->mgr, mstc->port,
1070                                               asyh->dp.pbn, 0);
1071         if (slots < 0)
1072                 return slots;
1073
1074         asyh->dp.tu = slots;
1075
1076         return 0;
1077 }
1078
1079 static u8
1080 nv50_dp_bpc_to_depth(unsigned int bpc)
1081 {
1082         switch (bpc) {
1083         case  6: return NV837D_SOR_SET_CONTROL_PIXEL_DEPTH_BPP_18_444;
1084         case  8: return NV837D_SOR_SET_CONTROL_PIXEL_DEPTH_BPP_24_444;
1085         case 10:
1086         default: return NV837D_SOR_SET_CONTROL_PIXEL_DEPTH_BPP_30_444;
1087         }
1088 }
1089
1090 static void
1091 nv50_msto_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state)
1092 {
1093         struct nv50_msto *msto = nv50_msto(encoder);
1094         struct nv50_head *head = msto->head;
1095         struct nv50_head_atom *asyh =
1096                 nv50_head_atom(drm_atomic_get_new_crtc_state(state, &head->base.base));
1097         struct nv50_mstc *mstc = NULL;
1098         struct nv50_mstm *mstm = NULL;
1099         struct drm_connector *connector;
1100         struct drm_connector_list_iter conn_iter;
1101         u8 proto;
1102         bool r;
1103
1104         drm_connector_list_iter_begin(encoder->dev, &conn_iter);
1105         drm_for_each_connector_iter(connector, &conn_iter) {
1106                 if (connector->state->best_encoder == &msto->encoder) {
1107                         mstc = nv50_mstc(connector);
1108                         mstm = mstc->mstm;
1109                         break;
1110                 }
1111         }
1112         drm_connector_list_iter_end(&conn_iter);
1113
1114         if (WARN_ON(!mstc))
1115                 return;
1116
1117         r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, asyh->dp.pbn, asyh->dp.tu);
1118         if (!r)
1119                 DRM_DEBUG_KMS("Failed to allocate VCPI\n");
1120
1121         if (!mstm->links++)
1122                 nv50_outp_acquire(mstm->outp, false /*XXX: MST audio.*/);
1123
1124         if (mstm->outp->link & 1)
1125                 proto = NV917D_SOR_SET_CONTROL_PROTOCOL_DP_A;
1126         else
1127                 proto = NV917D_SOR_SET_CONTROL_PROTOCOL_DP_B;
1128
1129         mstm->outp->update(mstm->outp, head->base.index, asyh, proto,
1130                            nv50_dp_bpc_to_depth(asyh->or.bpc));
1131
1132         msto->mstc = mstc;
1133         mstm->modified = true;
1134 }
1135
1136 static void
1137 nv50_msto_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *state)
1138 {
1139         struct nv50_msto *msto = nv50_msto(encoder);
1140         struct nv50_mstc *mstc = msto->mstc;
1141         struct nv50_mstm *mstm = mstc->mstm;
1142
1143         drm_dp_mst_reset_vcpi_slots(&mstm->mgr, mstc->port);
1144
1145         mstm->outp->update(mstm->outp, msto->head->base.index, NULL, 0, 0);
1146         mstm->modified = true;
1147         if (!--mstm->links)
1148                 mstm->disabled = true;
1149         msto->disabled = true;
1150 }
1151
1152 static const struct drm_encoder_helper_funcs
1153 nv50_msto_help = {
1154         .atomic_disable = nv50_msto_atomic_disable,
1155         .atomic_enable = nv50_msto_atomic_enable,
1156         .atomic_check = nv50_msto_atomic_check,
1157 };
1158
1159 static void
1160 nv50_msto_destroy(struct drm_encoder *encoder)
1161 {
1162         struct nv50_msto *msto = nv50_msto(encoder);
1163         drm_encoder_cleanup(&msto->encoder);
1164         kfree(msto);
1165 }
1166
1167 static const struct drm_encoder_funcs
1168 nv50_msto = {
1169         .destroy = nv50_msto_destroy,
1170 };
1171
1172 static struct nv50_msto *
1173 nv50_msto_new(struct drm_device *dev, struct nv50_head *head, int id)
1174 {
1175         struct nv50_msto *msto;
1176         int ret;
1177
1178         msto = kzalloc(sizeof(*msto), GFP_KERNEL);
1179         if (!msto)
1180                 return ERR_PTR(-ENOMEM);
1181
1182         ret = drm_encoder_init(dev, &msto->encoder, &nv50_msto,
1183                                DRM_MODE_ENCODER_DPMST, "mst-%d", id);
1184         if (ret) {
1185                 kfree(msto);
1186                 return ERR_PTR(ret);
1187         }
1188
1189         drm_encoder_helper_add(&msto->encoder, &nv50_msto_help);
1190         msto->encoder.possible_crtcs = drm_crtc_mask(&head->base.base);
1191         msto->head = head;
1192         return msto;
1193 }
1194
1195 static struct drm_encoder *
1196 nv50_mstc_atomic_best_encoder(struct drm_connector *connector,
1197                               struct drm_atomic_state *state)
1198 {
1199         struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state,
1200                                                                                          connector);
1201         struct nv50_mstc *mstc = nv50_mstc(connector);
1202         struct drm_crtc *crtc = connector_state->crtc;
1203
1204         if (!(mstc->mstm->outp->dcb->heads & drm_crtc_mask(crtc)))
1205                 return NULL;
1206
1207         return &nv50_head(crtc)->msto->encoder;
1208 }
1209
1210 static enum drm_mode_status
1211 nv50_mstc_mode_valid(struct drm_connector *connector,
1212                      struct drm_display_mode *mode)
1213 {
1214         struct nv50_mstc *mstc = nv50_mstc(connector);
1215         struct nouveau_encoder *outp = mstc->mstm->outp;
1216
1217         /* TODO: calculate the PBN from the dotclock and validate against the
1218          * MSTB's max possible PBN
1219          */
1220
1221         return nv50_dp_mode_valid(connector, outp, mode, NULL);
1222 }
1223
1224 static int
1225 nv50_mstc_get_modes(struct drm_connector *connector)
1226 {
1227         struct nv50_mstc *mstc = nv50_mstc(connector);
1228         int ret = 0;
1229
1230         mstc->edid = drm_dp_mst_get_edid(&mstc->connector, mstc->port->mgr, mstc->port);
1231         drm_connector_update_edid_property(&mstc->connector, mstc->edid);
1232         if (mstc->edid)
1233                 ret = drm_add_edid_modes(&mstc->connector, mstc->edid);
1234
1235         /*
1236          * XXX: Since we don't use HDR in userspace quite yet, limit the bpc
1237          * to 8 to save bandwidth on the topology. In the future, we'll want
1238          * to properly fix this by dynamically selecting the highest possible
1239          * bpc that would fit in the topology
1240          */
1241         if (connector->display_info.bpc)
1242                 connector->display_info.bpc =
1243                         clamp(connector->display_info.bpc, 6U, 8U);
1244         else
1245                 connector->display_info.bpc = 8;
1246
1247         if (mstc->native)
1248                 drm_mode_destroy(mstc->connector.dev, mstc->native);
1249         mstc->native = nouveau_conn_native_mode(&mstc->connector);
1250         return ret;
1251 }
1252
1253 static int
1254 nv50_mstc_atomic_check(struct drm_connector *connector,
1255                        struct drm_atomic_state *state)
1256 {
1257         struct nv50_mstc *mstc = nv50_mstc(connector);
1258         struct drm_dp_mst_topology_mgr *mgr = &mstc->mstm->mgr;
1259         struct drm_connector_state *new_conn_state =
1260                 drm_atomic_get_new_connector_state(state, connector);
1261         struct drm_connector_state *old_conn_state =
1262                 drm_atomic_get_old_connector_state(state, connector);
1263         struct drm_crtc_state *crtc_state;
1264         struct drm_crtc *new_crtc = new_conn_state->crtc;
1265
1266         if (!old_conn_state->crtc)
1267                 return 0;
1268
1269         /* We only want to free VCPI if this state disables the CRTC on this
1270          * connector
1271          */
1272         if (new_crtc) {
1273                 crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc);
1274
1275                 if (!crtc_state ||
1276                     !drm_atomic_crtc_needs_modeset(crtc_state) ||
1277                     crtc_state->enable)
1278                         return 0;
1279         }
1280
1281         return drm_dp_atomic_release_vcpi_slots(state, mgr, mstc->port);
1282 }
1283
1284 static int
1285 nv50_mstc_detect(struct drm_connector *connector,
1286                  struct drm_modeset_acquire_ctx *ctx, bool force)
1287 {
1288         struct nv50_mstc *mstc = nv50_mstc(connector);
1289         int ret;
1290
1291         if (drm_connector_is_unregistered(connector))
1292                 return connector_status_disconnected;
1293
1294         ret = pm_runtime_get_sync(connector->dev->dev);
1295         if (ret < 0 && ret != -EACCES) {
1296                 pm_runtime_put_autosuspend(connector->dev->dev);
1297                 return connector_status_disconnected;
1298         }
1299
1300         ret = drm_dp_mst_detect_port(connector, ctx, mstc->port->mgr,
1301                                      mstc->port);
1302         if (ret != connector_status_connected)
1303                 goto out;
1304
1305 out:
1306         pm_runtime_mark_last_busy(connector->dev->dev);
1307         pm_runtime_put_autosuspend(connector->dev->dev);
1308         return ret;
1309 }
1310
1311 static const struct drm_connector_helper_funcs
1312 nv50_mstc_help = {
1313         .get_modes = nv50_mstc_get_modes,
1314         .mode_valid = nv50_mstc_mode_valid,
1315         .atomic_best_encoder = nv50_mstc_atomic_best_encoder,
1316         .atomic_check = nv50_mstc_atomic_check,
1317         .detect_ctx = nv50_mstc_detect,
1318 };
1319
1320 static void
1321 nv50_mstc_destroy(struct drm_connector *connector)
1322 {
1323         struct nv50_mstc *mstc = nv50_mstc(connector);
1324
1325         drm_connector_cleanup(&mstc->connector);
1326         drm_dp_mst_put_port_malloc(mstc->port);
1327
1328         kfree(mstc);
1329 }
1330
1331 static const struct drm_connector_funcs
1332 nv50_mstc = {
1333         .reset = nouveau_conn_reset,
1334         .fill_modes = drm_helper_probe_single_connector_modes,
1335         .destroy = nv50_mstc_destroy,
1336         .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state,
1337         .atomic_destroy_state = nouveau_conn_atomic_destroy_state,
1338         .atomic_set_property = nouveau_conn_atomic_set_property,
1339         .atomic_get_property = nouveau_conn_atomic_get_property,
1340 };
1341
1342 static int
1343 nv50_mstc_new(struct nv50_mstm *mstm, struct drm_dp_mst_port *port,
1344               const char *path, struct nv50_mstc **pmstc)
1345 {
1346         struct drm_device *dev = mstm->outp->base.base.dev;
1347         struct drm_crtc *crtc;
1348         struct nv50_mstc *mstc;
1349         int ret;
1350
1351         if (!(mstc = *pmstc = kzalloc(sizeof(*mstc), GFP_KERNEL)))
1352                 return -ENOMEM;
1353         mstc->mstm = mstm;
1354         mstc->port = port;
1355
1356         ret = drm_connector_init(dev, &mstc->connector, &nv50_mstc,
1357                                  DRM_MODE_CONNECTOR_DisplayPort);
1358         if (ret) {
1359                 kfree(*pmstc);
1360                 *pmstc = NULL;
1361                 return ret;
1362         }
1363
1364         drm_connector_helper_add(&mstc->connector, &nv50_mstc_help);
1365
1366         mstc->connector.funcs->reset(&mstc->connector);
1367         nouveau_conn_attach_properties(&mstc->connector);
1368
1369         drm_for_each_crtc(crtc, dev) {
1370                 if (!(mstm->outp->dcb->heads & drm_crtc_mask(crtc)))
1371                         continue;
1372
1373                 drm_connector_attach_encoder(&mstc->connector,
1374                                              &nv50_head(crtc)->msto->encoder);
1375         }
1376
1377         drm_object_attach_property(&mstc->connector.base, dev->mode_config.path_property, 0);
1378         drm_object_attach_property(&mstc->connector.base, dev->mode_config.tile_property, 0);
1379         drm_connector_set_path_property(&mstc->connector, path);
1380         drm_dp_mst_get_port_malloc(port);
1381         return 0;
1382 }
1383
1384 static void
1385 nv50_mstm_cleanup(struct nv50_mstm *mstm)
1386 {
1387         struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev);
1388         struct drm_encoder *encoder;
1389         int ret;
1390
1391         NV_ATOMIC(drm, "%s: mstm cleanup\n", mstm->outp->base.base.name);
1392         ret = drm_dp_check_act_status(&mstm->mgr);
1393
1394         ret = drm_dp_update_payload_part2(&mstm->mgr);
1395
1396         drm_for_each_encoder(encoder, mstm->outp->base.base.dev) {
1397                 if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) {
1398                         struct nv50_msto *msto = nv50_msto(encoder);
1399                         struct nv50_mstc *mstc = msto->mstc;
1400                         if (mstc && mstc->mstm == mstm)
1401                                 nv50_msto_cleanup(msto);
1402                 }
1403         }
1404
1405         mstm->modified = false;
1406 }
1407
1408 static void
1409 nv50_mstm_prepare(struct nv50_mstm *mstm)
1410 {
1411         struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev);
1412         struct drm_encoder *encoder;
1413         int ret;
1414
1415         NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name);
1416         ret = drm_dp_update_payload_part1(&mstm->mgr);
1417
1418         drm_for_each_encoder(encoder, mstm->outp->base.base.dev) {
1419                 if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) {
1420                         struct nv50_msto *msto = nv50_msto(encoder);
1421                         struct nv50_mstc *mstc = msto->mstc;
1422                         if (mstc && mstc->mstm == mstm)
1423                                 nv50_msto_prepare(msto);
1424                 }
1425         }
1426
1427         if (mstm->disabled) {
1428                 if (!mstm->links)
1429                         nv50_outp_release(mstm->outp);
1430                 mstm->disabled = false;
1431         }
1432 }
1433
1434 static struct drm_connector *
1435 nv50_mstm_add_connector(struct drm_dp_mst_topology_mgr *mgr,
1436                         struct drm_dp_mst_port *port, const char *path)
1437 {
1438         struct nv50_mstm *mstm = nv50_mstm(mgr);
1439         struct nv50_mstc *mstc;
1440         int ret;
1441
1442         ret = nv50_mstc_new(mstm, port, path, &mstc);
1443         if (ret)
1444                 return NULL;
1445
1446         return &mstc->connector;
1447 }
1448
1449 static const struct drm_dp_mst_topology_cbs
1450 nv50_mstm = {
1451         .add_connector = nv50_mstm_add_connector,
1452 };
1453
1454 bool
1455 nv50_mstm_service(struct nouveau_drm *drm,
1456                   struct nouveau_connector *nv_connector,
1457                   struct nv50_mstm *mstm)
1458 {
1459         struct drm_dp_aux *aux = &nv_connector->aux;
1460         bool handled = true, ret = true;
1461         int rc;
1462         u8 esi[8] = {};
1463
1464         while (handled) {
1465                 rc = drm_dp_dpcd_read(aux, DP_SINK_COUNT_ESI, esi, 8);
1466                 if (rc != 8) {
1467                         ret = false;
1468                         break;
1469                 }
1470
1471                 drm_dp_mst_hpd_irq(&mstm->mgr, esi, &handled);
1472                 if (!handled)
1473                         break;
1474
1475                 rc = drm_dp_dpcd_write(aux, DP_SINK_COUNT_ESI + 1, &esi[1],
1476                                        3);
1477                 if (rc != 3) {
1478                         ret = false;
1479                         break;
1480                 }
1481         }
1482
1483         if (!ret)
1484                 NV_DEBUG(drm, "Failed to handle ESI on %s: %d\n",
1485                          nv_connector->base.name, rc);
1486
1487         return ret;
1488 }
1489
1490 void
1491 nv50_mstm_remove(struct nv50_mstm *mstm)
1492 {
1493         mstm->is_mst = false;
1494         drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, false);
1495 }
1496
1497 static int
1498 nv50_mstm_enable(struct nv50_mstm *mstm, int state)
1499 {
1500         struct nouveau_encoder *outp = mstm->outp;
1501         struct {
1502                 struct nv50_disp_mthd_v1 base;
1503                 struct nv50_disp_sor_dp_mst_link_v0 mst;
1504         } args = {
1505                 .base.version = 1,
1506                 .base.method = NV50_DISP_MTHD_V1_SOR_DP_MST_LINK,
1507                 .base.hasht = outp->dcb->hasht,
1508                 .base.hashm = outp->dcb->hashm,
1509                 .mst.state = state,
1510         };
1511         struct nouveau_drm *drm = nouveau_drm(outp->base.base.dev);
1512         struct nvif_object *disp = &drm->display->disp.object;
1513
1514         return nvif_mthd(disp, 0, &args, sizeof(args));
1515 }
1516
1517 int
1518 nv50_mstm_detect(struct nouveau_encoder *outp)
1519 {
1520         struct nv50_mstm *mstm = outp->dp.mstm;
1521         struct drm_dp_aux *aux;
1522         int ret;
1523
1524         if (!mstm || !mstm->can_mst)
1525                 return 0;
1526
1527         aux = mstm->mgr.aux;
1528
1529         /* Clear any leftover MST state we didn't set ourselves by first
1530          * disabling MST if it was already enabled
1531          */
1532         ret = drm_dp_dpcd_writeb(aux, DP_MSTM_CTRL, 0);
1533         if (ret < 0)
1534                 return ret;
1535
1536         /* And start enabling */
1537         ret = nv50_mstm_enable(mstm, true);
1538         if (ret)
1539                 return ret;
1540
1541         ret = drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, true);
1542         if (ret) {
1543                 nv50_mstm_enable(mstm, false);
1544                 return ret;
1545         }
1546
1547         mstm->is_mst = true;
1548         return 1;
1549 }
1550
1551 static void
1552 nv50_mstm_fini(struct nouveau_encoder *outp)
1553 {
1554         struct nv50_mstm *mstm = outp->dp.mstm;
1555
1556         if (!mstm)
1557                 return;
1558
1559         /* Don't change the MST state of this connector until we've finished
1560          * resuming, since we can't safely grab hpd_irq_lock in our resume
1561          * path to protect mstm->is_mst without potentially deadlocking
1562          */
1563         mutex_lock(&outp->dp.hpd_irq_lock);
1564         mstm->suspended = true;
1565         mutex_unlock(&outp->dp.hpd_irq_lock);
1566
1567         if (mstm->is_mst)
1568                 drm_dp_mst_topology_mgr_suspend(&mstm->mgr);
1569 }
1570
1571 static void
1572 nv50_mstm_init(struct nouveau_encoder *outp, bool runtime)
1573 {
1574         struct nv50_mstm *mstm = outp->dp.mstm;
1575         int ret = 0;
1576
1577         if (!mstm)
1578                 return;
1579
1580         if (mstm->is_mst) {
1581                 ret = drm_dp_mst_topology_mgr_resume(&mstm->mgr, !runtime);
1582                 if (ret == -1)
1583                         nv50_mstm_remove(mstm);
1584         }
1585
1586         mutex_lock(&outp->dp.hpd_irq_lock);
1587         mstm->suspended = false;
1588         mutex_unlock(&outp->dp.hpd_irq_lock);
1589
1590         if (ret == -1)
1591                 drm_kms_helper_hotplug_event(mstm->mgr.dev);
1592 }
1593
1594 static void
1595 nv50_mstm_del(struct nv50_mstm **pmstm)
1596 {
1597         struct nv50_mstm *mstm = *pmstm;
1598         if (mstm) {
1599                 drm_dp_mst_topology_mgr_destroy(&mstm->mgr);
1600                 kfree(*pmstm);
1601                 *pmstm = NULL;
1602         }
1603 }
1604
1605 static int
1606 nv50_mstm_new(struct nouveau_encoder *outp, struct drm_dp_aux *aux, int aux_max,
1607               int conn_base_id, struct nv50_mstm **pmstm)
1608 {
1609         const int max_payloads = hweight8(outp->dcb->heads);
1610         struct drm_device *dev = outp->base.base.dev;
1611         struct nv50_mstm *mstm;
1612         int ret;
1613
1614         if (!(mstm = *pmstm = kzalloc(sizeof(*mstm), GFP_KERNEL)))
1615                 return -ENOMEM;
1616         mstm->outp = outp;
1617         mstm->mgr.cbs = &nv50_mstm;
1618
1619         ret = drm_dp_mst_topology_mgr_init(&mstm->mgr, dev, aux, aux_max,
1620                                            max_payloads, outp->dcb->dpconf.link_nr,
1621                                            drm_dp_bw_code_to_link_rate(outp->dcb->dpconf.link_bw),
1622                                            conn_base_id);
1623         if (ret)
1624                 return ret;
1625
1626         return 0;
1627 }
1628
1629 /******************************************************************************
1630  * SOR
1631  *****************************************************************************/
1632 static void
1633 nv50_sor_update(struct nouveau_encoder *nv_encoder, u8 head,
1634                 struct nv50_head_atom *asyh, u8 proto, u8 depth)
1635 {
1636         struct nv50_disp *disp = nv50_disp(nv_encoder->base.base.dev);
1637         struct nv50_core *core = disp->core;
1638
1639         if (!asyh) {
1640                 nv_encoder->ctrl &= ~BIT(head);
1641                 if (NVDEF_TEST(nv_encoder->ctrl, NV507D, SOR_SET_CONTROL, OWNER, ==, NONE))
1642                         nv_encoder->ctrl = 0;
1643         } else {
1644                 nv_encoder->ctrl |= NVVAL(NV507D, SOR_SET_CONTROL, PROTOCOL, proto);
1645                 nv_encoder->ctrl |= BIT(head);
1646                 asyh->or.depth = depth;
1647         }
1648
1649         core->func->sor->ctrl(core, nv_encoder->or, nv_encoder->ctrl, asyh);
1650 }
1651
1652 static void
1653 nv50_sor_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *state)
1654 {
1655         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
1656         struct nouveau_crtc *nv_crtc = nouveau_crtc(nv_encoder->crtc);
1657         struct nouveau_connector *nv_connector = nv50_outp_get_old_connector(state, nv_encoder);
1658         struct drm_dp_aux *aux = &nv_connector->aux;
1659         u8 pwr;
1660
1661         if (nv_encoder->dcb->type == DCB_OUTPUT_DP) {
1662                 int ret = drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr);
1663
1664                 if (ret == 0) {
1665                         pwr &= ~DP_SET_POWER_MASK;
1666                         pwr |=  DP_SET_POWER_D3;
1667                         drm_dp_dpcd_writeb(aux, DP_SET_POWER, pwr);
1668                 }
1669         }
1670
1671         nv_encoder->update(nv_encoder, nv_crtc->index, NULL, 0, 0);
1672         nv50_audio_disable(encoder, nv_crtc);
1673         nv50_hdmi_disable(&nv_encoder->base.base, nv_crtc);
1674         nv50_outp_release(nv_encoder);
1675         nv_encoder->crtc = NULL;
1676 }
1677
1678 static void
1679 nv50_sor_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state)
1680 {
1681         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
1682         struct nouveau_crtc *nv_crtc = nv50_outp_get_new_crtc(state, nv_encoder);
1683         struct nv50_head_atom *asyh =
1684                 nv50_head_atom(drm_atomic_get_new_crtc_state(state, &nv_crtc->base));
1685         struct drm_display_mode *mode = &asyh->state.adjusted_mode;
1686         struct {
1687                 struct nv50_disp_mthd_v1 base;
1688                 struct nv50_disp_sor_lvds_script_v0 lvds;
1689         } lvds = {
1690                 .base.version = 1,
1691                 .base.method  = NV50_DISP_MTHD_V1_SOR_LVDS_SCRIPT,
1692                 .base.hasht   = nv_encoder->dcb->hasht,
1693                 .base.hashm   = nv_encoder->dcb->hashm,
1694         };
1695         struct nv50_disp *disp = nv50_disp(encoder->dev);
1696         struct drm_device *dev = encoder->dev;
1697         struct nouveau_drm *drm = nouveau_drm(dev);
1698         struct nouveau_connector *nv_connector;
1699         struct nvbios *bios = &drm->vbios;
1700         bool hda = false;
1701         u8 proto = NV507D_SOR_SET_CONTROL_PROTOCOL_CUSTOM;
1702         u8 depth = NV837D_SOR_SET_CONTROL_PIXEL_DEPTH_DEFAULT;
1703
1704         nv_connector = nv50_outp_get_new_connector(state, nv_encoder);
1705         nv_encoder->crtc = &nv_crtc->base;
1706
1707         if ((disp->disp->object.oclass == GT214_DISP ||
1708              disp->disp->object.oclass >= GF110_DISP) &&
1709             drm_detect_monitor_audio(nv_connector->edid))
1710                 hda = true;
1711         nv50_outp_acquire(nv_encoder, hda);
1712
1713         switch (nv_encoder->dcb->type) {
1714         case DCB_OUTPUT_TMDS:
1715                 if (nv_encoder->link & 1) {
1716                         proto = NV507D_SOR_SET_CONTROL_PROTOCOL_SINGLE_TMDS_A;
1717                         /* Only enable dual-link if:
1718                          *  - Need to (i.e. rate > 165MHz)
1719                          *  - DCB says we can
1720                          *  - Not an HDMI monitor, since there's no dual-link
1721                          *    on HDMI.
1722                          */
1723                         if (mode->clock >= 165000 &&
1724                             nv_encoder->dcb->duallink_possible &&
1725                             !drm_detect_hdmi_monitor(nv_connector->edid))
1726                                 proto = NV507D_SOR_SET_CONTROL_PROTOCOL_DUAL_TMDS;
1727                 } else {
1728                         proto = NV507D_SOR_SET_CONTROL_PROTOCOL_SINGLE_TMDS_B;
1729                 }
1730
1731                 nv50_hdmi_enable(&nv_encoder->base.base, nv_crtc, nv_connector, state, mode);
1732                 break;
1733         case DCB_OUTPUT_LVDS:
1734                 proto = NV507D_SOR_SET_CONTROL_PROTOCOL_LVDS_CUSTOM;
1735
1736                 if (bios->fp_no_ddc) {
1737                         if (bios->fp.dual_link)
1738                                 lvds.lvds.script |= 0x0100;
1739                         if (bios->fp.if_is_24bit)
1740                                 lvds.lvds.script |= 0x0200;
1741                 } else {
1742                         if (nv_connector->type == DCB_CONNECTOR_LVDS_SPWG) {
1743                                 if (((u8 *)nv_connector->edid)[121] == 2)
1744                                         lvds.lvds.script |= 0x0100;
1745                         } else
1746                         if (mode->clock >= bios->fp.duallink_transition_clk) {
1747                                 lvds.lvds.script |= 0x0100;
1748                         }
1749
1750                         if (lvds.lvds.script & 0x0100) {
1751                                 if (bios->fp.strapless_is_24bit & 2)
1752                                         lvds.lvds.script |= 0x0200;
1753                         } else {
1754                                 if (bios->fp.strapless_is_24bit & 1)
1755                                         lvds.lvds.script |= 0x0200;
1756                         }
1757
1758                         if (asyh->or.bpc == 8)
1759                                 lvds.lvds.script |= 0x0200;
1760                 }
1761
1762                 nvif_mthd(&disp->disp->object, 0, &lvds, sizeof(lvds));
1763                 break;
1764         case DCB_OUTPUT_DP:
1765                 depth = nv50_dp_bpc_to_depth(asyh->or.bpc);
1766
1767                 if (nv_encoder->link & 1)
1768                         proto = NV887D_SOR_SET_CONTROL_PROTOCOL_DP_A;
1769                 else
1770                         proto = NV887D_SOR_SET_CONTROL_PROTOCOL_DP_B;
1771
1772                 nv50_audio_enable(encoder, nv_crtc, nv_connector, state, mode);
1773                 break;
1774         default:
1775                 BUG();
1776                 break;
1777         }
1778
1779         nv_encoder->update(nv_encoder, nv_crtc->index, asyh, proto, depth);
1780 }
1781
1782 static const struct drm_encoder_helper_funcs
1783 nv50_sor_help = {
1784         .atomic_check = nv50_outp_atomic_check,
1785         .atomic_enable = nv50_sor_atomic_enable,
1786         .atomic_disable = nv50_sor_atomic_disable,
1787 };
1788
1789 static void
1790 nv50_sor_destroy(struct drm_encoder *encoder)
1791 {
1792         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
1793         nv50_mstm_del(&nv_encoder->dp.mstm);
1794         drm_encoder_cleanup(encoder);
1795
1796         if (nv_encoder->dcb->type == DCB_OUTPUT_DP)
1797                 mutex_destroy(&nv_encoder->dp.hpd_irq_lock);
1798
1799         kfree(encoder);
1800 }
1801
1802 static const struct drm_encoder_funcs
1803 nv50_sor_func = {
1804         .destroy = nv50_sor_destroy,
1805 };
1806
1807 static bool nv50_has_mst(struct nouveau_drm *drm)
1808 {
1809         struct nvkm_bios *bios = nvxx_bios(&drm->client.device);
1810         u32 data;
1811         u8 ver, hdr, cnt, len;
1812
1813         data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len);
1814         return data && ver >= 0x40 && (nvbios_rd08(bios, data + 0x08) & 0x04);
1815 }
1816
1817 static int
1818 nv50_sor_create(struct drm_connector *connector, struct dcb_output *dcbe)
1819 {
1820         struct nouveau_connector *nv_connector = nouveau_connector(connector);
1821         struct nouveau_drm *drm = nouveau_drm(connector->dev);
1822         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
1823         struct nouveau_encoder *nv_encoder;
1824         struct drm_encoder *encoder;
1825         struct nv50_disp *disp = nv50_disp(connector->dev);
1826         int type, ret;
1827
1828         switch (dcbe->type) {
1829         case DCB_OUTPUT_LVDS: type = DRM_MODE_ENCODER_LVDS; break;
1830         case DCB_OUTPUT_TMDS:
1831         case DCB_OUTPUT_DP:
1832         default:
1833                 type = DRM_MODE_ENCODER_TMDS;
1834                 break;
1835         }
1836
1837         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
1838         if (!nv_encoder)
1839                 return -ENOMEM;
1840         nv_encoder->dcb = dcbe;
1841         nv_encoder->update = nv50_sor_update;
1842
1843         encoder = to_drm_encoder(nv_encoder);
1844         encoder->possible_crtcs = dcbe->heads;
1845         encoder->possible_clones = 0;
1846         drm_encoder_init(connector->dev, encoder, &nv50_sor_func, type,
1847                          "sor-%04x-%04x", dcbe->hasht, dcbe->hashm);
1848         drm_encoder_helper_add(encoder, &nv50_sor_help);
1849
1850         drm_connector_attach_encoder(connector, encoder);
1851
1852         disp->core->func->sor->get_caps(disp, nv_encoder, ffs(dcbe->or) - 1);
1853         nv50_outp_dump_caps(drm, nv_encoder);
1854
1855         if (dcbe->type == DCB_OUTPUT_DP) {
1856                 struct nvkm_i2c_aux *aux =
1857                         nvkm_i2c_aux_find(i2c, dcbe->i2c_index);
1858
1859                 mutex_init(&nv_encoder->dp.hpd_irq_lock);
1860
1861                 if (aux) {
1862                         if (disp->disp->object.oclass < GF110_DISP) {
1863                                 /* HW has no support for address-only
1864                                  * transactions, so we're required to
1865                                  * use custom I2C-over-AUX code.
1866                                  */
1867                                 nv_encoder->i2c = &aux->i2c;
1868                         } else {
1869                                 nv_encoder->i2c = &nv_connector->aux.ddc;
1870                         }
1871                         nv_encoder->aux = aux;
1872                 }
1873
1874                 if (nv_connector->type != DCB_CONNECTOR_eDP &&
1875                     nv50_has_mst(drm)) {
1876                         ret = nv50_mstm_new(nv_encoder, &nv_connector->aux,
1877                                             16, nv_connector->base.base.id,
1878                                             &nv_encoder->dp.mstm);
1879                         if (ret)
1880                                 return ret;
1881                 }
1882         } else {
1883                 struct nvkm_i2c_bus *bus =
1884                         nvkm_i2c_bus_find(i2c, dcbe->i2c_index);
1885                 if (bus)
1886                         nv_encoder->i2c = &bus->i2c;
1887         }
1888
1889         return 0;
1890 }
1891
1892 /******************************************************************************
1893  * PIOR
1894  *****************************************************************************/
1895 static int
1896 nv50_pior_atomic_check(struct drm_encoder *encoder,
1897                        struct drm_crtc_state *crtc_state,
1898                        struct drm_connector_state *conn_state)
1899 {
1900         int ret = nv50_outp_atomic_check(encoder, crtc_state, conn_state);
1901         if (ret)
1902                 return ret;
1903         crtc_state->adjusted_mode.clock *= 2;
1904         return 0;
1905 }
1906
1907 static void
1908 nv50_pior_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *state)
1909 {
1910         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
1911         struct nv50_core *core = nv50_disp(encoder->dev)->core;
1912         const u32 ctrl = NVDEF(NV507D, PIOR_SET_CONTROL, OWNER, NONE);
1913
1914         core->func->pior->ctrl(core, nv_encoder->or, ctrl, NULL);
1915         nv_encoder->crtc = NULL;
1916         nv50_outp_release(nv_encoder);
1917 }
1918
1919 static void
1920 nv50_pior_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state)
1921 {
1922         struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
1923         struct nouveau_crtc *nv_crtc = nv50_outp_get_new_crtc(state, nv_encoder);
1924         struct nv50_head_atom *asyh =
1925                 nv50_head_atom(drm_atomic_get_new_crtc_state(state, &nv_crtc->base));
1926         struct nv50_core *core = nv50_disp(encoder->dev)->core;
1927         u32 ctrl = 0;
1928
1929         switch (nv_crtc->index) {
1930         case 0: ctrl |= NVDEF(NV507D, PIOR_SET_CONTROL, OWNER, HEAD0); break;
1931         case 1: ctrl |= NVDEF(NV507D, PIOR_SET_CONTROL, OWNER, HEAD1); break;
1932         default:
1933                 WARN_ON(1);
1934                 break;
1935         }
1936
1937         nv50_outp_acquire(nv_encoder, false);
1938
1939         switch (asyh->or.bpc) {
1940         case 10: asyh->or.depth = NV837D_PIOR_SET_CONTROL_PIXEL_DEPTH_BPP_30_444; break;
1941         case  8: asyh->or.depth = NV837D_PIOR_SET_CONTROL_PIXEL_DEPTH_BPP_24_444; break;
1942         case  6: asyh->or.depth = NV837D_PIOR_SET_CONTROL_PIXEL_DEPTH_BPP_18_444; break;
1943         default: asyh->or.depth = NV837D_PIOR_SET_CONTROL_PIXEL_DEPTH_DEFAULT; break;
1944         }
1945
1946         switch (nv_encoder->dcb->type) {
1947         case DCB_OUTPUT_TMDS:
1948         case DCB_OUTPUT_DP:
1949                 ctrl |= NVDEF(NV507D, PIOR_SET_CONTROL, PROTOCOL, EXT_TMDS_ENC);
1950                 break;
1951         default:
1952                 BUG();
1953                 break;
1954         }
1955
1956         core->func->pior->ctrl(core, nv_encoder->or, ctrl, asyh);
1957         nv_encoder->crtc = &nv_crtc->base;
1958 }
1959
1960 static const struct drm_encoder_helper_funcs
1961 nv50_pior_help = {
1962         .atomic_check = nv50_pior_atomic_check,
1963         .atomic_enable = nv50_pior_atomic_enable,
1964         .atomic_disable = nv50_pior_atomic_disable,
1965 };
1966
1967 static void
1968 nv50_pior_destroy(struct drm_encoder *encoder)
1969 {
1970         drm_encoder_cleanup(encoder);
1971         kfree(encoder);
1972 }
1973
1974 static const struct drm_encoder_funcs
1975 nv50_pior_func = {
1976         .destroy = nv50_pior_destroy,
1977 };
1978
1979 static int
1980 nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe)
1981 {
1982         struct drm_device *dev = connector->dev;
1983         struct nouveau_drm *drm = nouveau_drm(dev);
1984         struct nv50_disp *disp = nv50_disp(dev);
1985         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
1986         struct nvkm_i2c_bus *bus = NULL;
1987         struct nvkm_i2c_aux *aux = NULL;
1988         struct i2c_adapter *ddc;
1989         struct nouveau_encoder *nv_encoder;
1990         struct drm_encoder *encoder;
1991         int type;
1992
1993         switch (dcbe->type) {
1994         case DCB_OUTPUT_TMDS:
1995                 bus  = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_EXT(dcbe->extdev));
1996                 ddc  = bus ? &bus->i2c : NULL;
1997                 type = DRM_MODE_ENCODER_TMDS;
1998                 break;
1999         case DCB_OUTPUT_DP:
2000                 aux  = nvkm_i2c_aux_find(i2c, NVKM_I2C_AUX_EXT(dcbe->extdev));
2001                 ddc  = aux ? &aux->i2c : NULL;
2002                 type = DRM_MODE_ENCODER_TMDS;
2003                 break;
2004         default:
2005                 return -ENODEV;
2006         }
2007
2008         nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
2009         if (!nv_encoder)
2010                 return -ENOMEM;
2011         nv_encoder->dcb = dcbe;
2012         nv_encoder->i2c = ddc;
2013         nv_encoder->aux = aux;
2014
2015         encoder = to_drm_encoder(nv_encoder);
2016         encoder->possible_crtcs = dcbe->heads;
2017         encoder->possible_clones = 0;
2018         drm_encoder_init(connector->dev, encoder, &nv50_pior_func, type,
2019                          "pior-%04x-%04x", dcbe->hasht, dcbe->hashm);
2020         drm_encoder_helper_add(encoder, &nv50_pior_help);
2021
2022         drm_connector_attach_encoder(connector, encoder);
2023
2024         disp->core->func->pior->get_caps(disp, nv_encoder, ffs(dcbe->or) - 1);
2025         nv50_outp_dump_caps(drm, nv_encoder);
2026
2027         return 0;
2028 }
2029
2030 /******************************************************************************
2031  * Atomic
2032  *****************************************************************************/
2033
2034 static void
2035 nv50_disp_atomic_commit_core(struct drm_atomic_state *state, u32 *interlock)
2036 {
2037         struct nouveau_drm *drm = nouveau_drm(state->dev);
2038         struct nv50_disp *disp = nv50_disp(drm->dev);
2039         struct nv50_core *core = disp->core;
2040         struct nv50_mstm *mstm;
2041         struct drm_encoder *encoder;
2042
2043         NV_ATOMIC(drm, "commit core %08x\n", interlock[NV50_DISP_INTERLOCK_BASE]);
2044
2045         drm_for_each_encoder(encoder, drm->dev) {
2046                 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) {
2047                         mstm = nouveau_encoder(encoder)->dp.mstm;
2048                         if (mstm && mstm->modified)
2049                                 nv50_mstm_prepare(mstm);
2050                 }
2051         }
2052
2053         core->func->ntfy_init(disp->sync, NV50_DISP_CORE_NTFY);
2054         core->func->update(core, interlock, true);
2055         if (core->func->ntfy_wait_done(disp->sync, NV50_DISP_CORE_NTFY,
2056                                        disp->core->chan.base.device))
2057                 NV_ERROR(drm, "core notifier timeout\n");
2058
2059         drm_for_each_encoder(encoder, drm->dev) {
2060                 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) {
2061                         mstm = nouveau_encoder(encoder)->dp.mstm;
2062                         if (mstm && mstm->modified)
2063                                 nv50_mstm_cleanup(mstm);
2064                 }
2065         }
2066 }
2067
2068 static void
2069 nv50_disp_atomic_commit_wndw(struct drm_atomic_state *state, u32 *interlock)
2070 {
2071         struct drm_plane_state *new_plane_state;
2072         struct drm_plane *plane;
2073         int i;
2074
2075         for_each_new_plane_in_state(state, plane, new_plane_state, i) {
2076                 struct nv50_wndw *wndw = nv50_wndw(plane);
2077                 if (interlock[wndw->interlock.type] & wndw->interlock.data) {
2078                         if (wndw->func->update)
2079                                 wndw->func->update(wndw, interlock);
2080                 }
2081         }
2082 }
2083
2084 static void
2085 nv50_disp_atomic_commit_tail(struct drm_atomic_state *state)
2086 {
2087         struct drm_device *dev = state->dev;
2088         struct drm_crtc_state *new_crtc_state, *old_crtc_state;
2089         struct drm_crtc *crtc;
2090         struct drm_plane_state *new_plane_state;
2091         struct drm_plane *plane;
2092         struct nouveau_drm *drm = nouveau_drm(dev);
2093         struct nv50_disp *disp = nv50_disp(dev);
2094         struct nv50_atom *atom = nv50_atom(state);
2095         struct nv50_core *core = disp->core;
2096         struct nv50_outp_atom *outp, *outt;
2097         u32 interlock[NV50_DISP_INTERLOCK__SIZE] = {};
2098         int i;
2099         bool flushed = false;
2100
2101         NV_ATOMIC(drm, "commit %d %d\n", atom->lock_core, atom->flush_disable);
2102         nv50_crc_atomic_stop_reporting(state);
2103         drm_atomic_helper_wait_for_fences(dev, state, false);
2104         drm_atomic_helper_wait_for_dependencies(state);
2105         drm_atomic_helper_update_legacy_modeset_state(dev, state);
2106         drm_atomic_helper_calc_timestamping_constants(state);
2107
2108         if (atom->lock_core)
2109                 mutex_lock(&disp->mutex);
2110
2111         /* Disable head(s). */
2112         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
2113                 struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state);
2114                 struct nv50_head *head = nv50_head(crtc);
2115
2116                 NV_ATOMIC(drm, "%s: clr %04x (set %04x)\n", crtc->name,
2117                           asyh->clr.mask, asyh->set.mask);
2118
2119                 if (old_crtc_state->active && !new_crtc_state->active) {
2120                         pm_runtime_put_noidle(dev->dev);
2121                         drm_crtc_vblank_off(crtc);
2122                 }
2123
2124                 if (asyh->clr.mask) {
2125                         nv50_head_flush_clr(head, asyh, atom->flush_disable);
2126                         interlock[NV50_DISP_INTERLOCK_CORE] |= 1;
2127                 }
2128         }
2129
2130         /* Disable plane(s). */
2131         for_each_new_plane_in_state(state, plane, new_plane_state, i) {
2132                 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state);
2133                 struct nv50_wndw *wndw = nv50_wndw(plane);
2134
2135                 NV_ATOMIC(drm, "%s: clr %02x (set %02x)\n", plane->name,
2136                           asyw->clr.mask, asyw->set.mask);
2137                 if (!asyw->clr.mask)
2138                         continue;
2139
2140                 nv50_wndw_flush_clr(wndw, interlock, atom->flush_disable, asyw);
2141         }
2142
2143         /* Disable output path(s). */
2144         list_for_each_entry(outp, &atom->outp, head) {
2145                 const struct drm_encoder_helper_funcs *help;
2146                 struct drm_encoder *encoder;
2147
2148                 encoder = outp->encoder;
2149                 help = encoder->helper_private;
2150
2151                 NV_ATOMIC(drm, "%s: clr %02x (set %02x)\n", encoder->name,
2152                           outp->clr.mask, outp->set.mask);
2153
2154                 if (outp->clr.mask) {
2155                         help->atomic_disable(encoder, state);
2156                         interlock[NV50_DISP_INTERLOCK_CORE] |= 1;
2157                         if (outp->flush_disable) {
2158                                 nv50_disp_atomic_commit_wndw(state, interlock);
2159                                 nv50_disp_atomic_commit_core(state, interlock);
2160                                 memset(interlock, 0x00, sizeof(interlock));
2161
2162                                 flushed = true;
2163                         }
2164                 }
2165         }
2166
2167         /* Flush disable. */
2168         if (interlock[NV50_DISP_INTERLOCK_CORE]) {
2169                 if (atom->flush_disable) {
2170                         nv50_disp_atomic_commit_wndw(state, interlock);
2171                         nv50_disp_atomic_commit_core(state, interlock);
2172                         memset(interlock, 0x00, sizeof(interlock));
2173
2174                         flushed = true;
2175                 }
2176         }
2177
2178         if (flushed)
2179                 nv50_crc_atomic_release_notifier_contexts(state);
2180         nv50_crc_atomic_init_notifier_contexts(state);
2181
2182         /* Update output path(s). */
2183         list_for_each_entry_safe(outp, outt, &atom->outp, head) {
2184                 const struct drm_encoder_helper_funcs *help;
2185                 struct drm_encoder *encoder;
2186
2187                 encoder = outp->encoder;
2188                 help = encoder->helper_private;
2189
2190                 NV_ATOMIC(drm, "%s: set %02x (clr %02x)\n", encoder->name,
2191                           outp->set.mask, outp->clr.mask);
2192
2193                 if (outp->set.mask) {
2194                         help->atomic_enable(encoder, state);
2195                         interlock[NV50_DISP_INTERLOCK_CORE] = 1;
2196                 }
2197
2198                 list_del(&outp->head);
2199                 kfree(outp);
2200         }
2201
2202         /* Update head(s). */
2203         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
2204                 struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state);
2205                 struct nv50_head *head = nv50_head(crtc);
2206
2207                 NV_ATOMIC(drm, "%s: set %04x (clr %04x)\n", crtc->name,
2208                           asyh->set.mask, asyh->clr.mask);
2209
2210                 if (asyh->set.mask) {
2211                         nv50_head_flush_set(head, asyh);
2212                         interlock[NV50_DISP_INTERLOCK_CORE] = 1;
2213                 }
2214
2215                 if (new_crtc_state->active) {
2216                         if (!old_crtc_state->active) {
2217                                 drm_crtc_vblank_on(crtc);
2218                                 pm_runtime_get_noresume(dev->dev);
2219                         }
2220                         if (new_crtc_state->event)
2221                                 drm_crtc_vblank_get(crtc);
2222                 }
2223         }
2224
2225         /* Update window->head assignment.
2226          *
2227          * This has to happen in an update that's not interlocked with
2228          * any window channels to avoid hitting HW error checks.
2229          *
2230          *TODO: Proper handling of window ownership (Turing apparently
2231          *      supports non-fixed mappings).
2232          */
2233         if (core->assign_windows) {
2234                 core->func->wndw.owner(core);
2235                 nv50_disp_atomic_commit_core(state, interlock);
2236                 core->assign_windows = false;
2237                 interlock[NV50_DISP_INTERLOCK_CORE] = 0;
2238         }
2239
2240         /* Update plane(s). */
2241         for_each_new_plane_in_state(state, plane, new_plane_state, i) {
2242                 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state);
2243                 struct nv50_wndw *wndw = nv50_wndw(plane);
2244
2245                 NV_ATOMIC(drm, "%s: set %02x (clr %02x)\n", plane->name,
2246                           asyw->set.mask, asyw->clr.mask);
2247                 if ( !asyw->set.mask &&
2248                     (!asyw->clr.mask || atom->flush_disable))
2249                         continue;
2250
2251                 nv50_wndw_flush_set(wndw, interlock, asyw);
2252         }
2253
2254         /* Flush update. */
2255         nv50_disp_atomic_commit_wndw(state, interlock);
2256
2257         if (interlock[NV50_DISP_INTERLOCK_CORE]) {
2258                 if (interlock[NV50_DISP_INTERLOCK_BASE] ||
2259                     interlock[NV50_DISP_INTERLOCK_OVLY] ||
2260                     interlock[NV50_DISP_INTERLOCK_WNDW] ||
2261                     !atom->state.legacy_cursor_update)
2262                         nv50_disp_atomic_commit_core(state, interlock);
2263                 else
2264                         disp->core->func->update(disp->core, interlock, false);
2265         }
2266
2267         if (atom->lock_core)
2268                 mutex_unlock(&disp->mutex);
2269
2270         /* Wait for HW to signal completion. */
2271         for_each_new_plane_in_state(state, plane, new_plane_state, i) {
2272                 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state);
2273                 struct nv50_wndw *wndw = nv50_wndw(plane);
2274                 int ret = nv50_wndw_wait_armed(wndw, asyw);
2275                 if (ret)
2276                         NV_ERROR(drm, "%s: timeout\n", plane->name);
2277         }
2278
2279         for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
2280                 if (new_crtc_state->event) {
2281                         unsigned long flags;
2282                         /* Get correct count/ts if racing with vblank irq */
2283                         if (new_crtc_state->active)
2284                                 drm_crtc_accurate_vblank_count(crtc);
2285                         spin_lock_irqsave(&crtc->dev->event_lock, flags);
2286                         drm_crtc_send_vblank_event(crtc, new_crtc_state->event);
2287                         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
2288
2289                         new_crtc_state->event = NULL;
2290                         if (new_crtc_state->active)
2291                                 drm_crtc_vblank_put(crtc);
2292                 }
2293         }
2294
2295         nv50_crc_atomic_start_reporting(state);
2296         if (!flushed)
2297                 nv50_crc_atomic_release_notifier_contexts(state);
2298         drm_atomic_helper_commit_hw_done(state);
2299         drm_atomic_helper_cleanup_planes(dev, state);
2300         drm_atomic_helper_commit_cleanup_done(state);
2301         drm_atomic_state_put(state);
2302
2303         /* Drop the RPM ref we got from nv50_disp_atomic_commit() */
2304         pm_runtime_mark_last_busy(dev->dev);
2305         pm_runtime_put_autosuspend(dev->dev);
2306 }
2307
2308 static void
2309 nv50_disp_atomic_commit_work(struct work_struct *work)
2310 {
2311         struct drm_atomic_state *state =
2312                 container_of(work, typeof(*state), commit_work);
2313         nv50_disp_atomic_commit_tail(state);
2314 }
2315
2316 static int
2317 nv50_disp_atomic_commit(struct drm_device *dev,
2318                         struct drm_atomic_state *state, bool nonblock)
2319 {
2320         struct drm_plane_state *new_plane_state;
2321         struct drm_plane *plane;
2322         int ret, i;
2323
2324         ret = pm_runtime_get_sync(dev->dev);
2325         if (ret < 0 && ret != -EACCES) {
2326                 pm_runtime_put_autosuspend(dev->dev);
2327                 return ret;
2328         }
2329
2330         ret = drm_atomic_helper_setup_commit(state, nonblock);
2331         if (ret)
2332                 goto done;
2333
2334         INIT_WORK(&state->commit_work, nv50_disp_atomic_commit_work);
2335
2336         ret = drm_atomic_helper_prepare_planes(dev, state);
2337         if (ret)
2338                 goto done;
2339
2340         if (!nonblock) {
2341                 ret = drm_atomic_helper_wait_for_fences(dev, state, true);
2342                 if (ret)
2343                         goto err_cleanup;
2344         }
2345
2346         ret = drm_atomic_helper_swap_state(state, true);
2347         if (ret)
2348                 goto err_cleanup;
2349
2350         for_each_new_plane_in_state(state, plane, new_plane_state, i) {
2351                 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state);
2352                 struct nv50_wndw *wndw = nv50_wndw(plane);
2353
2354                 if (asyw->set.image)
2355                         nv50_wndw_ntfy_enable(wndw, asyw);
2356         }
2357
2358         drm_atomic_state_get(state);
2359
2360         /*
2361          * Grab another RPM ref for the commit tail, which will release the
2362          * ref when it's finished
2363          */
2364         pm_runtime_get_noresume(dev->dev);
2365
2366         if (nonblock)
2367                 queue_work(system_unbound_wq, &state->commit_work);
2368         else
2369                 nv50_disp_atomic_commit_tail(state);
2370
2371 err_cleanup:
2372         if (ret)
2373                 drm_atomic_helper_cleanup_planes(dev, state);
2374 done:
2375         pm_runtime_put_autosuspend(dev->dev);
2376         return ret;
2377 }
2378
2379 static struct nv50_outp_atom *
2380 nv50_disp_outp_atomic_add(struct nv50_atom *atom, struct drm_encoder *encoder)
2381 {
2382         struct nv50_outp_atom *outp;
2383
2384         list_for_each_entry(outp, &atom->outp, head) {
2385                 if (outp->encoder == encoder)
2386                         return outp;
2387         }
2388
2389         outp = kzalloc(sizeof(*outp), GFP_KERNEL);
2390         if (!outp)
2391                 return ERR_PTR(-ENOMEM);
2392
2393         list_add(&outp->head, &atom->outp);
2394         outp->encoder = encoder;
2395         return outp;
2396 }
2397
2398 static int
2399 nv50_disp_outp_atomic_check_clr(struct nv50_atom *atom,
2400                                 struct drm_connector_state *old_connector_state)
2401 {
2402         struct drm_encoder *encoder = old_connector_state->best_encoder;
2403         struct drm_crtc_state *old_crtc_state, *new_crtc_state;
2404         struct drm_crtc *crtc;
2405         struct nv50_outp_atom *outp;
2406
2407         if (!(crtc = old_connector_state->crtc))
2408                 return 0;
2409
2410         old_crtc_state = drm_atomic_get_old_crtc_state(&atom->state, crtc);
2411         new_crtc_state = drm_atomic_get_new_crtc_state(&atom->state, crtc);
2412         if (old_crtc_state->active && drm_atomic_crtc_needs_modeset(new_crtc_state)) {
2413                 outp = nv50_disp_outp_atomic_add(atom, encoder);
2414                 if (IS_ERR(outp))
2415                         return PTR_ERR(outp);
2416
2417                 if (outp->encoder->encoder_type == DRM_MODE_ENCODER_DPMST) {
2418                         outp->flush_disable = true;
2419                         atom->flush_disable = true;
2420                 }
2421                 outp->clr.ctrl = true;
2422                 atom->lock_core = true;
2423         }
2424
2425         return 0;
2426 }
2427
2428 static int
2429 nv50_disp_outp_atomic_check_set(struct nv50_atom *atom,
2430                                 struct drm_connector_state *connector_state)
2431 {
2432         struct drm_encoder *encoder = connector_state->best_encoder;
2433         struct drm_crtc_state *new_crtc_state;
2434         struct drm_crtc *crtc;
2435         struct nv50_outp_atom *outp;
2436
2437         if (!(crtc = connector_state->crtc))
2438                 return 0;
2439
2440         new_crtc_state = drm_atomic_get_new_crtc_state(&atom->state, crtc);
2441         if (new_crtc_state->active && drm_atomic_crtc_needs_modeset(new_crtc_state)) {
2442                 outp = nv50_disp_outp_atomic_add(atom, encoder);
2443                 if (IS_ERR(outp))
2444                         return PTR_ERR(outp);
2445
2446                 outp->set.ctrl = true;
2447                 atom->lock_core = true;
2448         }
2449
2450         return 0;
2451 }
2452
2453 static int
2454 nv50_disp_atomic_check(struct drm_device *dev, struct drm_atomic_state *state)
2455 {
2456         struct nv50_atom *atom = nv50_atom(state);
2457         struct nv50_core *core = nv50_disp(dev)->core;
2458         struct drm_connector_state *old_connector_state, *new_connector_state;
2459         struct drm_connector *connector;
2460         struct drm_crtc_state *new_crtc_state;
2461         struct drm_crtc *crtc;
2462         struct nv50_head *head;
2463         struct nv50_head_atom *asyh;
2464         int ret, i;
2465
2466         if (core->assign_windows && core->func->head->static_wndw_map) {
2467                 drm_for_each_crtc(crtc, dev) {
2468                         new_crtc_state = drm_atomic_get_crtc_state(state,
2469                                                                    crtc);
2470                         if (IS_ERR(new_crtc_state))
2471                                 return PTR_ERR(new_crtc_state);
2472
2473                         head = nv50_head(crtc);
2474                         asyh = nv50_head_atom(new_crtc_state);
2475                         core->func->head->static_wndw_map(head, asyh);
2476                 }
2477         }
2478
2479         /* We need to handle colour management on a per-plane basis. */
2480         for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
2481                 if (new_crtc_state->color_mgmt_changed) {
2482                         ret = drm_atomic_add_affected_planes(state, crtc);
2483                         if (ret)
2484                                 return ret;
2485                 }
2486         }
2487
2488         ret = drm_atomic_helper_check(dev, state);
2489         if (ret)
2490                 return ret;
2491
2492         for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) {
2493                 ret = nv50_disp_outp_atomic_check_clr(atom, old_connector_state);
2494                 if (ret)
2495                         return ret;
2496
2497                 ret = nv50_disp_outp_atomic_check_set(atom, new_connector_state);
2498                 if (ret)
2499                         return ret;
2500         }
2501
2502         ret = drm_dp_mst_atomic_check(state);
2503         if (ret)
2504                 return ret;
2505
2506         nv50_crc_atomic_check_outp(atom);
2507
2508         return 0;
2509 }
2510
2511 static void
2512 nv50_disp_atomic_state_clear(struct drm_atomic_state *state)
2513 {
2514         struct nv50_atom *atom = nv50_atom(state);
2515         struct nv50_outp_atom *outp, *outt;
2516
2517         list_for_each_entry_safe(outp, outt, &atom->outp, head) {
2518                 list_del(&outp->head);
2519                 kfree(outp);
2520         }
2521
2522         drm_atomic_state_default_clear(state);
2523 }
2524
2525 static void
2526 nv50_disp_atomic_state_free(struct drm_atomic_state *state)
2527 {
2528         struct nv50_atom *atom = nv50_atom(state);
2529         drm_atomic_state_default_release(&atom->state);
2530         kfree(atom);
2531 }
2532
2533 static struct drm_atomic_state *
2534 nv50_disp_atomic_state_alloc(struct drm_device *dev)
2535 {
2536         struct nv50_atom *atom;
2537         if (!(atom = kzalloc(sizeof(*atom), GFP_KERNEL)) ||
2538             drm_atomic_state_init(dev, &atom->state) < 0) {
2539                 kfree(atom);
2540                 return NULL;
2541         }
2542         INIT_LIST_HEAD(&atom->outp);
2543         return &atom->state;
2544 }
2545
2546 static const struct drm_mode_config_funcs
2547 nv50_disp_func = {
2548         .fb_create = nouveau_user_framebuffer_create,
2549         .output_poll_changed = nouveau_fbcon_output_poll_changed,
2550         .atomic_check = nv50_disp_atomic_check,
2551         .atomic_commit = nv50_disp_atomic_commit,
2552         .atomic_state_alloc = nv50_disp_atomic_state_alloc,
2553         .atomic_state_clear = nv50_disp_atomic_state_clear,
2554         .atomic_state_free = nv50_disp_atomic_state_free,
2555 };
2556
2557 /******************************************************************************
2558  * Init
2559  *****************************************************************************/
2560
2561 static void
2562 nv50_display_fini(struct drm_device *dev, bool runtime, bool suspend)
2563 {
2564         struct nouveau_drm *drm = nouveau_drm(dev);
2565         struct drm_encoder *encoder;
2566         struct drm_plane *plane;
2567
2568         drm_for_each_plane(plane, dev) {
2569                 struct nv50_wndw *wndw = nv50_wndw(plane);
2570                 if (plane->funcs != &nv50_wndw)
2571                         continue;
2572                 nv50_wndw_fini(wndw);
2573         }
2574
2575         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
2576                 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST)
2577                         nv50_mstm_fini(nouveau_encoder(encoder));
2578         }
2579
2580         if (!runtime)
2581                 cancel_work_sync(&drm->hpd_work);
2582 }
2583
2584 static int
2585 nv50_display_init(struct drm_device *dev, bool resume, bool runtime)
2586 {
2587         struct nv50_core *core = nv50_disp(dev)->core;
2588         struct drm_encoder *encoder;
2589         struct drm_plane *plane;
2590
2591         if (resume || runtime)
2592                 core->func->init(core);
2593
2594         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
2595                 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) {
2596                         struct nouveau_encoder *nv_encoder =
2597                                 nouveau_encoder(encoder);
2598                         nv50_mstm_init(nv_encoder, runtime);
2599                 }
2600         }
2601
2602         drm_for_each_plane(plane, dev) {
2603                 struct nv50_wndw *wndw = nv50_wndw(plane);
2604                 if (plane->funcs != &nv50_wndw)
2605                         continue;
2606                 nv50_wndw_init(wndw);
2607         }
2608
2609         return 0;
2610 }
2611
2612 static void
2613 nv50_display_destroy(struct drm_device *dev)
2614 {
2615         struct nv50_disp *disp = nv50_disp(dev);
2616
2617         nv50_audio_component_fini(nouveau_drm(dev));
2618
2619         nvif_object_unmap(&disp->caps);
2620         nvif_object_dtor(&disp->caps);
2621         nv50_core_del(&disp->core);
2622
2623         nouveau_bo_unmap(disp->sync);
2624         if (disp->sync)
2625                 nouveau_bo_unpin(disp->sync);
2626         nouveau_bo_ref(NULL, &disp->sync);
2627
2628         nouveau_display(dev)->priv = NULL;
2629         kfree(disp);
2630 }
2631
2632 int
2633 nv50_display_create(struct drm_device *dev)
2634 {
2635         struct nvif_device *device = &nouveau_drm(dev)->client.device;
2636         struct nouveau_drm *drm = nouveau_drm(dev);
2637         struct dcb_table *dcb = &drm->vbios.dcb;
2638         struct drm_connector *connector, *tmp;
2639         struct nv50_disp *disp;
2640         struct dcb_output *dcbe;
2641         int crtcs, ret, i;
2642         bool has_mst = nv50_has_mst(drm);
2643
2644         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
2645         if (!disp)
2646                 return -ENOMEM;
2647
2648         mutex_init(&disp->mutex);
2649
2650         nouveau_display(dev)->priv = disp;
2651         nouveau_display(dev)->dtor = nv50_display_destroy;
2652         nouveau_display(dev)->init = nv50_display_init;
2653         nouveau_display(dev)->fini = nv50_display_fini;
2654         disp->disp = &nouveau_display(dev)->disp;
2655         dev->mode_config.funcs = &nv50_disp_func;
2656         dev->mode_config.quirk_addfb_prefer_xbgr_30bpp = true;
2657         dev->mode_config.normalize_zpos = true;
2658
2659         /* small shared memory area we use for notifiers and semaphores */
2660         ret = nouveau_bo_new(&drm->client, 4096, 0x1000,
2661                              NOUVEAU_GEM_DOMAIN_VRAM,
2662                              0, 0x0000, NULL, NULL, &disp->sync);
2663         if (!ret) {
2664                 ret = nouveau_bo_pin(disp->sync, NOUVEAU_GEM_DOMAIN_VRAM, true);
2665                 if (!ret) {
2666                         ret = nouveau_bo_map(disp->sync);
2667                         if (ret)
2668                                 nouveau_bo_unpin(disp->sync);
2669                 }
2670                 if (ret)
2671                         nouveau_bo_ref(NULL, &disp->sync);
2672         }
2673
2674         if (ret)
2675                 goto out;
2676
2677         /* allocate master evo channel */
2678         ret = nv50_core_new(drm, &disp->core);
2679         if (ret)
2680                 goto out;
2681
2682         disp->core->func->init(disp->core);
2683         if (disp->core->func->caps_init) {
2684                 ret = disp->core->func->caps_init(drm, disp);
2685                 if (ret)
2686                         goto out;
2687         }
2688
2689         /* Assign the correct format modifiers */
2690         if (disp->disp->object.oclass >= TU102_DISP)
2691                 nouveau_display(dev)->format_modifiers = wndwc57e_modifiers;
2692         else
2693         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_FERMI)
2694                 nouveau_display(dev)->format_modifiers = disp90xx_modifiers;
2695         else
2696                 nouveau_display(dev)->format_modifiers = disp50xx_modifiers;
2697
2698         /* FIXME: 256x256 cursors are supported on Kepler, however unlike Maxwell and later
2699          * generations Kepler requires that we use small pages (4K) for cursor scanout surfaces. The
2700          * proper fix for this is to teach nouveau to migrate fbs being used for the cursor plane to
2701          * small page allocations in prepare_fb(). When this is implemented, we should also force
2702          * large pages (128K) for ovly fbs in order to fix Kepler ovlys.
2703          * But until then, just limit cursors to 128x128 - which is small enough to avoid ever using
2704          * large pages.
2705          */
2706         if (disp->disp->object.oclass >= GM107_DISP) {
2707                 dev->mode_config.cursor_width = 256;
2708                 dev->mode_config.cursor_height = 256;
2709         } else if (disp->disp->object.oclass >= GK104_DISP) {
2710                 dev->mode_config.cursor_width = 128;
2711                 dev->mode_config.cursor_height = 128;
2712         } else {
2713                 dev->mode_config.cursor_width = 64;
2714                 dev->mode_config.cursor_height = 64;
2715         }
2716
2717         /* create crtc objects to represent the hw heads */
2718         if (disp->disp->object.oclass >= GV100_DISP)
2719                 crtcs = nvif_rd32(&device->object, 0x610060) & 0xff;
2720         else
2721         if (disp->disp->object.oclass >= GF110_DISP)
2722                 crtcs = nvif_rd32(&device->object, 0x612004) & 0xf;
2723         else
2724                 crtcs = 0x3;
2725
2726         for (i = 0; i < fls(crtcs); i++) {
2727                 struct nv50_head *head;
2728
2729                 if (!(crtcs & (1 << i)))
2730                         continue;
2731
2732                 head = nv50_head_create(dev, i);
2733                 if (IS_ERR(head)) {
2734                         ret = PTR_ERR(head);
2735                         goto out;
2736                 }
2737
2738                 if (has_mst) {
2739                         head->msto = nv50_msto_new(dev, head, i);
2740                         if (IS_ERR(head->msto)) {
2741                                 ret = PTR_ERR(head->msto);
2742                                 head->msto = NULL;
2743                                 goto out;
2744                         }
2745
2746                         /*
2747                          * FIXME: This is a hack to workaround the following
2748                          * issues:
2749                          *
2750                          * https://gitlab.gnome.org/GNOME/mutter/issues/759
2751                          * https://gitlab.freedesktop.org/xorg/xserver/merge_requests/277
2752                          *
2753                          * Once these issues are closed, this should be
2754                          * removed
2755                          */
2756                         head->msto->encoder.possible_crtcs = crtcs;
2757                 }
2758         }
2759
2760         /* create encoder/connector objects based on VBIOS DCB table */
2761         for (i = 0, dcbe = &dcb->entry[0]; i < dcb->entries; i++, dcbe++) {
2762                 connector = nouveau_connector_create(dev, dcbe);
2763                 if (IS_ERR(connector))
2764                         continue;
2765
2766                 if (dcbe->location == DCB_LOC_ON_CHIP) {
2767                         switch (dcbe->type) {
2768                         case DCB_OUTPUT_TMDS:
2769                         case DCB_OUTPUT_LVDS:
2770                         case DCB_OUTPUT_DP:
2771                                 ret = nv50_sor_create(connector, dcbe);
2772                                 break;
2773                         case DCB_OUTPUT_ANALOG:
2774                                 ret = nv50_dac_create(connector, dcbe);
2775                                 break;
2776                         default:
2777                                 ret = -ENODEV;
2778                                 break;
2779                         }
2780                 } else {
2781                         ret = nv50_pior_create(connector, dcbe);
2782                 }
2783
2784                 if (ret) {
2785                         NV_WARN(drm, "failed to create encoder %d/%d/%d: %d\n",
2786                                      dcbe->location, dcbe->type,
2787                                      ffs(dcbe->or) - 1, ret);
2788                         ret = 0;
2789                 }
2790         }
2791
2792         /* cull any connectors we created that don't have an encoder */
2793         list_for_each_entry_safe(connector, tmp, &dev->mode_config.connector_list, head) {
2794                 if (connector->possible_encoders)
2795                         continue;
2796
2797                 NV_WARN(drm, "%s has no encoders, removing\n",
2798                         connector->name);
2799                 connector->funcs->destroy(connector);
2800         }
2801
2802         /* Disable vblank irqs aggressively for power-saving, safe on nv50+ */
2803         dev->vblank_disable_immediate = true;
2804
2805         nv50_audio_component_init(drm);
2806
2807 out:
2808         if (ret)
2809                 nv50_display_destroy(dev);
2810         return ret;
2811 }
2812
2813 /******************************************************************************
2814  * Format modifiers
2815  *****************************************************************************/
2816
2817 /****************************************************************
2818  *            Log2(block height) ----------------------------+  *
2819  *            Page Kind ----------------------------------+  |  *
2820  *            Gob Height/Page Kind Generation ------+     |  |  *
2821  *                          Sector layout -------+  |     |  |  *
2822  *                          Compression ------+  |  |     |  |  */
2823 const u64 disp50xx_modifiers[] = { /*         |  |  |     |  |  */
2824         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x7a, 0),
2825         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x7a, 1),
2826         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x7a, 2),
2827         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x7a, 3),
2828         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x7a, 4),
2829         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x7a, 5),
2830         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x78, 0),
2831         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x78, 1),
2832         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x78, 2),
2833         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x78, 3),
2834         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x78, 4),
2835         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x78, 5),
2836         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x70, 0),
2837         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x70, 1),
2838         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x70, 2),
2839         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x70, 3),
2840         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x70, 4),
2841         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 1, 0x70, 5),
2842         DRM_FORMAT_MOD_LINEAR,
2843         DRM_FORMAT_MOD_INVALID
2844 };
2845
2846 /****************************************************************
2847  *            Log2(block height) ----------------------------+  *
2848  *            Page Kind ----------------------------------+  |  *
2849  *            Gob Height/Page Kind Generation ------+     |  |  *
2850  *                          Sector layout -------+  |     |  |  *
2851  *                          Compression ------+  |  |     |  |  */
2852 const u64 disp90xx_modifiers[] = { /*         |  |  |     |  |  */
2853         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 0, 0xfe, 0),
2854         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 0, 0xfe, 1),
2855         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 0, 0xfe, 2),
2856         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 0, 0xfe, 3),
2857         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 0, 0xfe, 4),
2858         DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, 0, 0xfe, 5),
2859         DRM_FORMAT_MOD_LINEAR,
2860         DRM_FORMAT_MOD_INVALID
2861 };