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

   1 /*
   2  * Copyright 2018 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 #include "head.h"
  23 #include "base.h"
  24 #include "core.h"
  25 #include "curs.h"
  26 #include "ovly.h"
  27
  28 #include <nvif/class.h>
  29
  30 #include <drm/drm_atomic_helper.h>
  31 #include <drm/drm_crtc_helper.h>
  32 #include "nouveau_connector.h"
  33 void
  34 nv50_head_flush_clr(struct nv50_head *head,
  35                     struct nv50_head_atom *asyh, bool flush)
  36 {
  37         union nv50_head_atom_mask clr = {
  38                 .mask = asyh->clr.mask & ~(flush ? 0 : asyh->set.mask),
  39         };
  40         if (clr.olut) head->func->olut_clr(head);
  41         if (clr.core) head->func->core_clr(head);
  42         if (clr.curs) head->func->curs_clr(head);
  43 }
  44
  45 void
  46 nv50_head_flush_set(struct nv50_head *head, struct nv50_head_atom *asyh)
  47 {
  48         if (asyh->set.view   ) head->func->view    (head, asyh);
  49         if (asyh->set.mode   ) head->func->mode    (head, asyh);
  50         if (asyh->set.core   ) head->func->core_set(head, asyh);
  51         if (asyh->set.olut   ) {
  52                 asyh->olut.offset = nv50_lut_load(&head->olut,
  53                                                   asyh->olut.buffer,
  54                                                   asyh->state.gamma_lut,
  55                                                   asyh->olut.load);
  56                 head->func->olut_set(head, asyh);
  57         }
  58         if (asyh->set.curs   ) head->func->curs_set(head, asyh);
  59         if (asyh->set.base   ) head->func->base    (head, asyh);
  60         if (asyh->set.ovly   ) head->func->ovly    (head, asyh);
  61         if (asyh->set.dither ) head->func->dither  (head, asyh);
  62         if (asyh->set.procamp) head->func->procamp (head, asyh);
  63         if (asyh->set.or     ) head->func->or      (head, asyh);
  64 }
  65
  66 static void
  67 nv50_head_atomic_check_procamp(struct nv50_head_atom *armh,
  68                                struct nv50_head_atom *asyh,
  69                                struct nouveau_conn_atom *asyc)
  70 {
  71         const int vib = asyc->procamp.color_vibrance - 100;
  72         const int hue = asyc->procamp.vibrant_hue - 90;
  73         const int adj = (vib > 0) ? 50 : 0;
  74         asyh->procamp.sat.cos = ((vib * 2047 + adj) / 100) & 0xfff;
  75         asyh->procamp.sat.sin = ((hue * 2047) / 100) & 0xfff;
  76         asyh->set.procamp = true;
  77 }
  78
  79 static void
  80 nv50_head_atomic_check_dither(struct nv50_head_atom *armh,
  81                               struct nv50_head_atom *asyh,
  82                               struct nouveau_conn_atom *asyc)
  83 {
  84         u32 mode = 0x00;
  85
  86         if (asyc->dither.mode == DITHERING_MODE_AUTO) {
  87                 if (asyh->base.depth > asyh->or.bpc * 3)
  88                         mode = DITHERING_MODE_DYNAMIC2X2;
  89         } else {
  90                 mode = asyc->dither.mode;
  91         }
  92
  93         if (asyc->dither.depth == DITHERING_DEPTH_AUTO) {
  94                 if (asyh->or.bpc >= 8)
  95                         mode |= DITHERING_DEPTH_8BPC;
  96         } else {
  97                 mode |= asyc->dither.depth;
  98         }
  99
 100         asyh->dither.enable = mode;
 101         asyh->dither.bits = mode >> 1;
 102         asyh->dither.mode = mode >> 3;
 103         asyh->set.dither = true;
 104 }
 105
 106 static void
 107 nv50_head_atomic_check_view(struct nv50_head_atom *armh,
 108                             struct nv50_head_atom *asyh,
 109                             struct nouveau_conn_atom *asyc)
 110 {
 111         struct drm_connector *connector = asyc->state.connector;
 112         struct drm_display_mode *omode = &asyh->state.adjusted_mode;
 113         struct drm_display_mode *umode = &asyh->state.mode;
 114         int mode = asyc->scaler.mode;
 115         struct edid *edid;
 116         int umode_vdisplay, omode_hdisplay, omode_vdisplay;
 117
 118         if (connector->edid_blob_ptr)
 119                 edid = (struct edid *)connector->edid_blob_ptr->data;
 120         else
 121                 edid = NULL;
 122
 123         if (!asyc->scaler.full) {
 124                 if (mode == DRM_MODE_SCALE_NONE)
 125                         omode = umode;
 126         } else {
 127                 /* Non-EDID LVDS/eDP mode. */
 128                 mode = DRM_MODE_SCALE_FULLSCREEN;
 129         }
 130
 131         /* For the user-specified mode, we must ignore doublescan and
 132          * the like, but honor frame packing.
 133          */
 134         umode_vdisplay = umode->vdisplay;
 135         if ((umode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING)
 136                 umode_vdisplay += umode->vtotal;
 137         asyh->view.iW = umode->hdisplay;
 138         asyh->view.iH = umode_vdisplay;
 139         /* For the output mode, we can just use the stock helper. */
 140         drm_mode_get_hv_timing(omode, &omode_hdisplay, &omode_vdisplay);
 141         asyh->view.oW = omode_hdisplay;
 142         asyh->view.oH = omode_vdisplay;
 143
 144         /* Add overscan compensation if necessary, will keep the aspect
 145          * ratio the same as the backend mode unless overridden by the
 146          * user setting both hborder and vborder properties.
 147          */
 148         if ((asyc->scaler.underscan.mode == UNDERSCAN_ON ||
 149             (asyc->scaler.underscan.mode == UNDERSCAN_AUTO &&
 150              drm_detect_hdmi_monitor(edid)))) {
 151                 u32 bX = asyc->scaler.underscan.hborder;
 152                 u32 bY = asyc->scaler.underscan.vborder;
 153                 u32 r = (asyh->view.oH << 19) / asyh->view.oW;
 154
 155                 if (bX) {
 156                         asyh->view.oW -= (bX * 2);
 157                         if (bY) asyh->view.oH -= (bY * 2);
 158                         else    asyh->view.oH  = ((asyh->view.oW * r) + (r / 2)) >> 19;
 159                 } else {
 160                         asyh->view.oW -= (asyh->view.oW >> 4) + 32;
 161                         if (bY) asyh->view.oH -= (bY * 2);
 162                         else    asyh->view.oH  = ((asyh->view.oW * r) + (r / 2)) >> 19;
 163                 }
 164         }
 165
 166         /* Handle CENTER/ASPECT scaling, taking into account the areas
 167          * removed already for overscan compensation.
 168          */
 169         switch (mode) {
 170         case DRM_MODE_SCALE_CENTER:
 171                 /* NOTE: This will cause scaling when the input is
 172                  * larger than the output.
 173                  */
 174                 asyh->view.oW = min(asyh->view.iW, asyh->view.oW);
 175                 asyh->view.oH = min(asyh->view.iH, asyh->view.oH);
 176                 break;
 177         case DRM_MODE_SCALE_ASPECT:
 178                 /* Determine whether the scaling should be on width or on
 179                  * height. This is done by comparing the aspect ratios of the
 180                  * sizes. If the output AR is larger than input AR, that means
 181                  * we want to change the width (letterboxed on the
 182                  * left/right), otherwise on the height (letterboxed on the
 183                  * top/bottom).
 184                  *
 185                  * E.g. 4:3 (1.333) AR image displayed on a 16:10 (1.6) AR
 186                  * screen will have letterboxes on the left/right. However a
 187                  * 16:9 (1.777) AR image on that same screen will have
 188                  * letterboxes on the top/bottom.
 189                  *
 190                  * inputAR = iW / iH; outputAR = oW / oH
 191                  * outputAR > inputAR is equivalent to oW * iH > iW * oH
 192                  */
 193                 if (asyh->view.oW * asyh->view.iH > asyh->view.iW * asyh->view.oH) {
 194                         /* Recompute output width, i.e. left/right letterbox */
 195                         u32 r = (asyh->view.iW << 19) / asyh->view.iH;
 196                         asyh->view.oW = ((asyh->view.oH * r) + (r / 2)) >> 19;
 197                 } else {
 198                         /* Recompute output height, i.e. top/bottom letterbox */
 199                         u32 r = (asyh->view.iH << 19) / asyh->view.iW;
 200                         asyh->view.oH = ((asyh->view.oW * r) + (r / 2)) >> 19;
 201                 }
 202                 break;
 203         default:
 204                 break;
 205         }
 206
 207         asyh->set.view = true;
 208 }
 209
 210 static int
 211 nv50_head_atomic_check_lut(struct nv50_head *head,
 212                            struct nv50_head_atom *asyh)
 213 {
 214         struct nv50_disp *disp = nv50_disp(head->base.base.dev);
 215         struct drm_property_blob *olut = asyh->state.gamma_lut;
 216         int size;
 217
 218         /* Determine whether core output LUT should be enabled. */
 219         if (olut) {
 220                 /* Check if any window(s) have stolen the core output LUT
 221                  * to as an input LUT for legacy gamma + I8 colour format.
 222                  */
 223                 if (asyh->wndw.olut) {
 224                         /* If any window has stolen the core output LUT,
 225                          * all of them must.
 226                          */
 227                         if (asyh->wndw.olut != asyh->wndw.mask)
 228                                 return -EINVAL;
 229                         olut = NULL;
 230                 }
 231         }
 232
 233         if (!olut) {
 234                 if (!head->func->olut_identity) {
 235                         asyh->olut.handle = 0;
 236                         return 0;
 237                 }
 238                 size = 0;
 239         } else {
 240                 size = drm_color_lut_size(olut);
 241         }
 242
 243         if (!head->func->olut(head, asyh, size)) {
 244                 DRM_DEBUG_KMS("Invalid olut\n");
 245                 return -EINVAL;
 246         }
 247         asyh->olut.handle = disp->core->chan.vram.handle;
 248         asyh->olut.buffer = !asyh->olut.buffer;
 249
 250         return 0;
 251 }
 252
 253 static void
 254 nv50_head_atomic_check_mode(struct nv50_head *head, struct nv50_head_atom *asyh)
 255 {
 256         struct drm_display_mode *mode = &asyh->state.adjusted_mode;
 257         struct nv50_head_mode *m = &asyh->mode;
 258         u32 blankus;
 259
 260         drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V | CRTC_STEREO_DOUBLE);
 261
 262         /*
 263          * DRM modes are defined in terms of a repeating interval
 264          * starting with the active display area.  The hardware modes
 265          * are defined in terms of a repeating interval starting one
 266          * unit (pixel or line) into the sync pulse.  So, add bias.
 267          */
 268
 269         m->h.active = mode->crtc_htotal;
 270         m->h.synce  = mode->crtc_hsync_end - mode->crtc_hsync_start - 1;
 271         m->h.blanke = mode->crtc_hblank_end - mode->crtc_hsync_start - 1;
 272         m->h.blanks = m->h.blanke + mode->crtc_hdisplay;
 273
 274         m->v.active = mode->crtc_vtotal;
 275         m->v.synce  = mode->crtc_vsync_end - mode->crtc_vsync_start - 1;
 276         m->v.blanke = mode->crtc_vblank_end - mode->crtc_vsync_start - 1;
 277         m->v.blanks = m->v.blanke + mode->crtc_vdisplay;
 278
 279         /*XXX: Safe underestimate, even "0" works */
 280         blankus = (m->v.active - mode->crtc_vdisplay - 2) * m->h.active;
 281         blankus *= 1000;
 282         blankus /= mode->crtc_clock;
 283         m->v.blankus = blankus;
 284
 285         if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
 286                 m->v.blank2e =  m->v.active + m->v.blanke;
 287                 m->v.blank2s =  m->v.blank2e + mode->crtc_vdisplay;
 288                 m->v.active  = (m->v.active * 2) + 1;
 289                 m->interlace = true;
 290         } else {
 291                 m->v.blank2e = 0;
 292                 m->v.blank2s = 1;
 293                 m->interlace = false;
 294         }
 295         m->clock = mode->crtc_clock;
 296
 297         asyh->or.nhsync = !!(mode->flags & DRM_MODE_FLAG_NHSYNC);
 298         asyh->or.nvsync = !!(mode->flags & DRM_MODE_FLAG_NVSYNC);
 299         asyh->set.or = head->func->or != NULL;
 300         asyh->set.mode = true;
 301 }
 302
 303 static int
 304 nv50_head_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state)
 305 {
 306         struct nouveau_drm *drm = nouveau_drm(crtc->dev);
 307         struct nv50_head *head = nv50_head(crtc);
 308         struct nv50_head_atom *armh = nv50_head_atom(crtc->state);
 309         struct nv50_head_atom *asyh = nv50_head_atom(state);
 310         struct nouveau_conn_atom *asyc = NULL;
 311         struct drm_connector_state *conns;
 312         struct drm_connector *conn;
 313         int i;
 314
 315         NV_ATOMIC(drm, "%s atomic_check %d\n", crtc->name, asyh->state.active);
 316         if (asyh->state.active) {
 317                 for_each_new_connector_in_state(asyh->state.state, conn, conns, i) {
 318                         if (conns->crtc == crtc) {
 319                                 asyc = nouveau_conn_atom(conns);
 320                                 break;
 321                         }
 322                 }
 323
 324                 if (armh->state.active) {
 325                         if (asyc) {
 326                                 if (asyh->state.mode_changed)
 327                                         asyc->set.scaler = true;
 328                                 if (armh->base.depth != asyh->base.depth)
 329                                         asyc->set.dither = true;
 330                         }
 331                 } else {
 332                         if (asyc)
 333                                 asyc->set.mask = ~0;
 334                         asyh->set.mask = ~0;
 335                         asyh->set.or = head->func->or != NULL;
 336                 }
 337
 338                 if (asyh->state.mode_changed || asyh->state.connectors_changed)
 339                         nv50_head_atomic_check_mode(head, asyh);
 340
 341                 if (asyh->state.color_mgmt_changed ||
 342                     memcmp(&armh->wndw, &asyh->wndw, sizeof(asyh->wndw))) {
 343                         int ret = nv50_head_atomic_check_lut(head, asyh);
 344                         if (ret)
 345                                 return ret;
 346
 347                         asyh->olut.visible = asyh->olut.handle != 0;
 348                 }
 349
 350                 if (asyc) {
 351                         if (asyc->set.scaler)
 352                                 nv50_head_atomic_check_view(armh, asyh, asyc);
 353                         if (asyc->set.dither)
 354                                 nv50_head_atomic_check_dither(armh, asyh, asyc);
 355                         if (asyc->set.procamp)
 356                                 nv50_head_atomic_check_procamp(armh, asyh, asyc);
 357                 }
 358
 359                 if (head->func->core_calc) {
 360                         head->func->core_calc(head, asyh);
 361                         if (!asyh->core.visible)
 362                                 asyh->olut.visible = false;
 363                 }
 364
 365                 asyh->set.base = armh->base.cpp != asyh->base.cpp;
 366                 asyh->set.ovly = armh->ovly.cpp != asyh->ovly.cpp;
 367         } else {
 368                 asyh->olut.visible = false;
 369                 asyh->core.visible = false;
 370                 asyh->curs.visible = false;
 371                 asyh->base.cpp = 0;
 372                 asyh->ovly.cpp = 0;
 373         }
 374
 375         if (!drm_atomic_crtc_needs_modeset(&asyh->state)) {
 376                 if (asyh->core.visible) {
 377                         if (memcmp(&armh->core, &asyh->core, sizeof(asyh->core)))
 378                                 asyh->set.core = true;
 379                 } else
 380                 if (armh->core.visible) {
 381                         asyh->clr.core = true;
 382                 }
 383
 384                 if (asyh->curs.visible) {
 385                         if (memcmp(&armh->curs, &asyh->curs, sizeof(asyh->curs)))
 386                                 asyh->set.curs = true;
 387                 } else
 388                 if (armh->curs.visible) {
 389                         asyh->clr.curs = true;
 390                 }
 391
 392                 if (asyh->olut.visible) {
 393                         if (memcmp(&armh->olut, &asyh->olut, sizeof(asyh->olut)))
 394                                 asyh->set.olut = true;
 395                 } else
 396                 if (armh->olut.visible) {
 397                         asyh->clr.olut = true;
 398                 }
 399         } else {
 400                 asyh->clr.olut = armh->olut.visible;
 401                 asyh->clr.core = armh->core.visible;
 402                 asyh->clr.curs = armh->curs.visible;
 403                 asyh->set.olut = asyh->olut.visible;
 404                 asyh->set.core = asyh->core.visible;
 405                 asyh->set.curs = asyh->curs.visible;
 406         }
 407
 408         if (asyh->clr.mask || asyh->set.mask)
 409                 nv50_atom(asyh->state.state)->lock_core = true;
 410         return 0;
 411 }
 412
 413 static const struct drm_crtc_helper_funcs
 414 nv50_head_help = {
 415         .atomic_check = nv50_head_atomic_check,
 416 };
 417
 418 static void
 419 nv50_head_atomic_destroy_state(struct drm_crtc *crtc,
 420                                struct drm_crtc_state *state)
 421 {
 422         struct nv50_head_atom *asyh = nv50_head_atom(state);
 423         __drm_atomic_helper_crtc_destroy_state(&asyh->state);
 424         kfree(asyh);
 425 }
 426
 427 static struct drm_crtc_state *
 428 nv50_head_atomic_duplicate_state(struct drm_crtc *crtc)
 429 {
 430         struct nv50_head_atom *armh = nv50_head_atom(crtc->state);
 431         struct nv50_head_atom *asyh;
 432         if (!(asyh = kmalloc(sizeof(*asyh), GFP_KERNEL)))
 433                 return NULL;
 434         __drm_atomic_helper_crtc_duplicate_state(crtc, &asyh->state);
 435         asyh->wndw = armh->wndw;
 436         asyh->view = armh->view;
 437         asyh->mode = armh->mode;
 438         asyh->olut = armh->olut;
 439         asyh->core = armh->core;
 440         asyh->curs = armh->curs;
 441         asyh->base = armh->base;
 442         asyh->ovly = armh->ovly;
 443         asyh->dither = armh->dither;
 444         asyh->procamp = armh->procamp;
 445         asyh->or = armh->or;
 446         asyh->dp = armh->dp;
 447         asyh->clr.mask = 0;
 448         asyh->set.mask = 0;
 449         return &asyh->state;
 450 }
 451
 452 static void
 453 nv50_head_reset(struct drm_crtc *crtc)
 454 {
 455         struct nv50_head_atom *asyh;
 456
 457         if (WARN_ON(!(asyh = kzalloc(sizeof(*asyh), GFP_KERNEL))))
 458                 return;
 459
 460         if (crtc->state)
 461                 nv50_head_atomic_destroy_state(crtc, crtc->state);
 462
 463         __drm_atomic_helper_crtc_reset(crtc, &asyh->state);
 464 }
 465
 466 static void
 467 nv50_head_destroy(struct drm_crtc *crtc)
 468 {
 469         struct nv50_head *head = nv50_head(crtc);
 470         nv50_lut_fini(&head->olut);
 471         drm_crtc_cleanup(crtc);
 472         kfree(head);
 473 }
 474
 475 static const struct drm_crtc_funcs
 476 nv50_head_func = {
 477         .reset = nv50_head_reset,
 478         .gamma_set = drm_atomic_helper_legacy_gamma_set,
 479         .destroy = nv50_head_destroy,
 480         .set_config = drm_atomic_helper_set_config,
 481         .page_flip = drm_atomic_helper_page_flip,
 482         .atomic_duplicate_state = nv50_head_atomic_duplicate_state,
 483         .atomic_destroy_state = nv50_head_atomic_destroy_state,
 484 };
 485
 486 struct nv50_head *
 487 nv50_head_create(struct drm_device *dev, int index)
 488 {
 489         struct nouveau_drm *drm = nouveau_drm(dev);
 490         struct nv50_disp *disp = nv50_disp(dev);
 491         struct nv50_head *head;
 492         struct nv50_wndw *base, *ovly, *curs;
 493         struct drm_crtc *crtc;
 494         int ret;
 495
 496         head = kzalloc(sizeof(*head), GFP_KERNEL);
 497         if (!head)
 498                 return ERR_PTR(-ENOMEM);
 499
 500         head->func = disp->core->func->head;
 501         head->base.index = index;
 502
 503         if (disp->disp->object.oclass < GV100_DISP) {
 504                 ret = nv50_base_new(drm, head->base.index, &base);
 505                 ret = nv50_ovly_new(drm, head->base.index, &ovly);
 506         } else {
 507                 ret = nv50_wndw_new(drm, DRM_PLANE_TYPE_PRIMARY,
 508                                     head->base.index * 2 + 0, &base);
 509                 ret = nv50_wndw_new(drm, DRM_PLANE_TYPE_OVERLAY,
 510                                     head->base.index * 2 + 1, &ovly);
 511         }
 512         if (ret == 0)
 513                 ret = nv50_curs_new(drm, head->base.index, &curs);
 514         if (ret) {
 515                 kfree(head);
 516                 return ERR_PTR(ret);
 517         }
 518
 519         crtc = &head->base.base;
 520         drm_crtc_init_with_planes(dev, crtc, &base->plane, &curs->plane,
 521                                   &nv50_head_func, "head-%d", head->base.index);
 522         drm_crtc_helper_add(crtc, &nv50_head_help);
 523         /* Keep the legacy gamma size at 256 to avoid compatibility issues */
 524         drm_mode_crtc_set_gamma_size(crtc, 256);
 525         drm_crtc_enable_color_mgmt(crtc, base->func->ilut_size,
 526                                    disp->disp->object.oclass >= GF110_DISP,
 527                                    head->func->olut_size);
 528
 529         if (head->func->olut_set) {
 530                 ret = nv50_lut_init(disp, &drm->client.mmu, &head->olut);
 531                 if (ret) {
 532                         nv50_head_destroy(crtc);
 533                         return ERR_PTR(ret);
 534                 }
 535         }
 536
 537         return head;
 538 }