1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2015 Broadcom 4 */ 5 6 /** 7 * DOC: VC4 plane module 8 * 9 * Each DRM plane is a layer of pixels being scanned out by the HVS. 10 * 11 * At atomic modeset check time, we compute the HVS display element 12 * state that would be necessary for displaying the plane (giving us a 13 * chance to figure out if a plane configuration is invalid), then at 14 * atomic flush time the CRTC will ask us to write our element state 15 * into the region of the HVS that it has allocated for us. 16 */ 17 18 #include <drm/drm_atomic.h> 19 #include <drm/drm_atomic_helper.h> 20 #include <drm/drm_atomic_uapi.h> 21 #include <drm/drm_blend.h> 22 #include <drm/drm_drv.h> 23 #include <drm/drm_fb_dma_helper.h> 24 #include <drm/drm_fourcc.h> 25 #include <drm/drm_framebuffer.h> 26 #include <drm/drm_gem_atomic_helper.h> 27 28 #include "uapi/drm/vc4_drm.h" 29 30 #include "vc4_drv.h" 31 #include "vc4_regs.h" 32 33 static const struct hvs_format { 34 u32 drm; /* DRM_FORMAT_* */ 35 u32 hvs; /* HVS_FORMAT_* */ 36 u32 pixel_order; 37 u32 pixel_order_hvs5; 38 bool hvs5_only; 39 } hvs_formats[] = { 40 { 41 .drm = DRM_FORMAT_XRGB8888, 42 .hvs = HVS_PIXEL_FORMAT_RGBA8888, 43 .pixel_order = HVS_PIXEL_ORDER_ABGR, 44 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 45 }, 46 { 47 .drm = DRM_FORMAT_ARGB8888, 48 .hvs = HVS_PIXEL_FORMAT_RGBA8888, 49 .pixel_order = HVS_PIXEL_ORDER_ABGR, 50 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 51 }, 52 { 53 .drm = DRM_FORMAT_ABGR8888, 54 .hvs = HVS_PIXEL_FORMAT_RGBA8888, 55 .pixel_order = HVS_PIXEL_ORDER_ARGB, 56 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 57 }, 58 { 59 .drm = DRM_FORMAT_XBGR8888, 60 .hvs = HVS_PIXEL_FORMAT_RGBA8888, 61 .pixel_order = HVS_PIXEL_ORDER_ARGB, 62 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 63 }, 64 { 65 .drm = DRM_FORMAT_RGB565, 66 .hvs = HVS_PIXEL_FORMAT_RGB565, 67 .pixel_order = HVS_PIXEL_ORDER_XRGB, 68 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XRGB, 69 }, 70 { 71 .drm = DRM_FORMAT_BGR565, 72 .hvs = HVS_PIXEL_FORMAT_RGB565, 73 .pixel_order = HVS_PIXEL_ORDER_XBGR, 74 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XBGR, 75 }, 76 { 77 .drm = DRM_FORMAT_ARGB1555, 78 .hvs = HVS_PIXEL_FORMAT_RGBA5551, 79 .pixel_order = HVS_PIXEL_ORDER_ABGR, 80 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 81 }, 82 { 83 .drm = DRM_FORMAT_XRGB1555, 84 .hvs = HVS_PIXEL_FORMAT_RGBA5551, 85 .pixel_order = HVS_PIXEL_ORDER_ABGR, 86 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 87 }, 88 { 89 .drm = DRM_FORMAT_RGB888, 90 .hvs = HVS_PIXEL_FORMAT_RGB888, 91 .pixel_order = HVS_PIXEL_ORDER_XRGB, 92 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XRGB, 93 }, 94 { 95 .drm = DRM_FORMAT_BGR888, 96 .hvs = HVS_PIXEL_FORMAT_RGB888, 97 .pixel_order = HVS_PIXEL_ORDER_XBGR, 98 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XBGR, 99 }, 100 { 101 .drm = DRM_FORMAT_YUV422, 102 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_3PLANE, 103 .pixel_order = HVS_PIXEL_ORDER_XYCBCR, 104 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR, 105 }, 106 { 107 .drm = DRM_FORMAT_YVU422, 108 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_3PLANE, 109 .pixel_order = HVS_PIXEL_ORDER_XYCRCB, 110 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB, 111 }, 112 { 113 .drm = DRM_FORMAT_YUV420, 114 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_3PLANE, 115 .pixel_order = HVS_PIXEL_ORDER_XYCBCR, 116 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR, 117 }, 118 { 119 .drm = DRM_FORMAT_YVU420, 120 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_3PLANE, 121 .pixel_order = HVS_PIXEL_ORDER_XYCRCB, 122 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB, 123 }, 124 { 125 .drm = DRM_FORMAT_NV12, 126 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_2PLANE, 127 .pixel_order = HVS_PIXEL_ORDER_XYCBCR, 128 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR, 129 }, 130 { 131 .drm = DRM_FORMAT_NV21, 132 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV420_2PLANE, 133 .pixel_order = HVS_PIXEL_ORDER_XYCRCB, 134 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB, 135 }, 136 { 137 .drm = DRM_FORMAT_NV16, 138 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_2PLANE, 139 .pixel_order = HVS_PIXEL_ORDER_XYCBCR, 140 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR, 141 }, 142 { 143 .drm = DRM_FORMAT_NV61, 144 .hvs = HVS_PIXEL_FORMAT_YCBCR_YUV422_2PLANE, 145 .pixel_order = HVS_PIXEL_ORDER_XYCRCB, 146 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCRCB, 147 }, 148 { 149 .drm = DRM_FORMAT_P030, 150 .hvs = HVS_PIXEL_FORMAT_YCBCR_10BIT, 151 .pixel_order_hvs5 = HVS_PIXEL_ORDER_XYCBCR, 152 .hvs5_only = true, 153 }, 154 { 155 .drm = DRM_FORMAT_XRGB2101010, 156 .hvs = HVS_PIXEL_FORMAT_RGBA1010102, 157 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 158 .hvs5_only = true, 159 }, 160 { 161 .drm = DRM_FORMAT_ARGB2101010, 162 .hvs = HVS_PIXEL_FORMAT_RGBA1010102, 163 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 164 .hvs5_only = true, 165 }, 166 { 167 .drm = DRM_FORMAT_ABGR2101010, 168 .hvs = HVS_PIXEL_FORMAT_RGBA1010102, 169 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 170 .hvs5_only = true, 171 }, 172 { 173 .drm = DRM_FORMAT_XBGR2101010, 174 .hvs = HVS_PIXEL_FORMAT_RGBA1010102, 175 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 176 .hvs5_only = true, 177 }, 178 { 179 .drm = DRM_FORMAT_RGB332, 180 .hvs = HVS_PIXEL_FORMAT_RGB332, 181 .pixel_order = HVS_PIXEL_ORDER_ARGB, 182 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 183 }, 184 { 185 .drm = DRM_FORMAT_BGR233, 186 .hvs = HVS_PIXEL_FORMAT_RGB332, 187 .pixel_order = HVS_PIXEL_ORDER_ABGR, 188 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 189 }, 190 { 191 .drm = DRM_FORMAT_XRGB4444, 192 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 193 .pixel_order = HVS_PIXEL_ORDER_ABGR, 194 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 195 }, 196 { 197 .drm = DRM_FORMAT_ARGB4444, 198 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 199 .pixel_order = HVS_PIXEL_ORDER_ABGR, 200 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, 201 }, 202 { 203 .drm = DRM_FORMAT_XBGR4444, 204 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 205 .pixel_order = HVS_PIXEL_ORDER_ARGB, 206 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 207 }, 208 { 209 .drm = DRM_FORMAT_ABGR4444, 210 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 211 .pixel_order = HVS_PIXEL_ORDER_ARGB, 212 .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, 213 }, 214 { 215 .drm = DRM_FORMAT_BGRX4444, 216 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 217 .pixel_order = HVS_PIXEL_ORDER_RGBA, 218 .pixel_order_hvs5 = HVS_PIXEL_ORDER_BGRA, 219 }, 220 { 221 .drm = DRM_FORMAT_BGRA4444, 222 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 223 .pixel_order = HVS_PIXEL_ORDER_RGBA, 224 .pixel_order_hvs5 = HVS_PIXEL_ORDER_BGRA, 225 }, 226 { 227 .drm = DRM_FORMAT_RGBX4444, 228 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 229 .pixel_order = HVS_PIXEL_ORDER_BGRA, 230 .pixel_order_hvs5 = HVS_PIXEL_ORDER_RGBA, 231 }, 232 { 233 .drm = DRM_FORMAT_RGBA4444, 234 .hvs = HVS_PIXEL_FORMAT_RGBA4444, 235 .pixel_order = HVS_PIXEL_ORDER_BGRA, 236 .pixel_order_hvs5 = HVS_PIXEL_ORDER_RGBA, 237 }, 238 }; 239 240 static const struct hvs_format *vc4_get_hvs_format(u32 drm_format) 241 { 242 unsigned i; 243 244 for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) { 245 if (hvs_formats[i].drm == drm_format) 246 return &hvs_formats[i]; 247 } 248 249 return NULL; 250 } 251 252 static enum vc4_scaling_mode vc4_get_scaling_mode(u32 src, u32 dst) 253 { 254 if (dst == src) 255 return VC4_SCALING_NONE; 256 if (3 * dst >= 2 * src) 257 return VC4_SCALING_PPF; 258 else 259 return VC4_SCALING_TPZ; 260 } 261 262 static bool plane_enabled(struct drm_plane_state *state) 263 { 264 return state->fb && !WARN_ON(!state->crtc); 265 } 266 267 static struct drm_plane_state *vc4_plane_duplicate_state(struct drm_plane *plane) 268 { 269 struct vc4_plane_state *vc4_state; 270 271 if (WARN_ON(!plane->state)) 272 return NULL; 273 274 vc4_state = kmemdup(plane->state, sizeof(*vc4_state), GFP_KERNEL); 275 if (!vc4_state) 276 return NULL; 277 278 memset(&vc4_state->lbm, 0, sizeof(vc4_state->lbm)); 279 vc4_state->dlist_initialized = 0; 280 281 __drm_atomic_helper_plane_duplicate_state(plane, &vc4_state->base); 282 283 if (vc4_state->dlist) { 284 vc4_state->dlist = kmemdup(vc4_state->dlist, 285 vc4_state->dlist_count * 4, 286 GFP_KERNEL); 287 if (!vc4_state->dlist) { 288 kfree(vc4_state); 289 return NULL; 290 } 291 vc4_state->dlist_size = vc4_state->dlist_count; 292 } 293 294 return &vc4_state->base; 295 } 296 297 static void vc4_plane_destroy_state(struct drm_plane *plane, 298 struct drm_plane_state *state) 299 { 300 struct vc4_dev *vc4 = to_vc4_dev(plane->dev); 301 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 302 303 if (drm_mm_node_allocated(&vc4_state->lbm)) { 304 unsigned long irqflags; 305 306 spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags); 307 drm_mm_remove_node(&vc4_state->lbm); 308 spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags); 309 } 310 311 kfree(vc4_state->dlist); 312 __drm_atomic_helper_plane_destroy_state(&vc4_state->base); 313 kfree(state); 314 } 315 316 /* Called during init to allocate the plane's atomic state. */ 317 static void vc4_plane_reset(struct drm_plane *plane) 318 { 319 struct vc4_plane_state *vc4_state; 320 321 WARN_ON(plane->state); 322 323 vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL); 324 if (!vc4_state) 325 return; 326 327 __drm_atomic_helper_plane_reset(plane, &vc4_state->base); 328 } 329 330 static void vc4_dlist_counter_increment(struct vc4_plane_state *vc4_state) 331 { 332 if (vc4_state->dlist_count == vc4_state->dlist_size) { 333 u32 new_size = max(4u, vc4_state->dlist_count * 2); 334 u32 *new_dlist = kmalloc_array(new_size, 4, GFP_KERNEL); 335 336 if (!new_dlist) 337 return; 338 memcpy(new_dlist, vc4_state->dlist, vc4_state->dlist_count * 4); 339 340 kfree(vc4_state->dlist); 341 vc4_state->dlist = new_dlist; 342 vc4_state->dlist_size = new_size; 343 } 344 345 vc4_state->dlist_count++; 346 } 347 348 static void vc4_dlist_write(struct vc4_plane_state *vc4_state, u32 val) 349 { 350 unsigned int idx = vc4_state->dlist_count; 351 352 vc4_dlist_counter_increment(vc4_state); 353 vc4_state->dlist[idx] = val; 354 } 355 356 /* Returns the scl0/scl1 field based on whether the dimensions need to 357 * be up/down/non-scaled. 358 * 359 * This is a replication of a table from the spec. 360 */ 361 static u32 vc4_get_scl_field(struct drm_plane_state *state, int plane) 362 { 363 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 364 365 switch (vc4_state->x_scaling[plane] << 2 | vc4_state->y_scaling[plane]) { 366 case VC4_SCALING_PPF << 2 | VC4_SCALING_PPF: 367 return SCALER_CTL0_SCL_H_PPF_V_PPF; 368 case VC4_SCALING_TPZ << 2 | VC4_SCALING_PPF: 369 return SCALER_CTL0_SCL_H_TPZ_V_PPF; 370 case VC4_SCALING_PPF << 2 | VC4_SCALING_TPZ: 371 return SCALER_CTL0_SCL_H_PPF_V_TPZ; 372 case VC4_SCALING_TPZ << 2 | VC4_SCALING_TPZ: 373 return SCALER_CTL0_SCL_H_TPZ_V_TPZ; 374 case VC4_SCALING_PPF << 2 | VC4_SCALING_NONE: 375 return SCALER_CTL0_SCL_H_PPF_V_NONE; 376 case VC4_SCALING_NONE << 2 | VC4_SCALING_PPF: 377 return SCALER_CTL0_SCL_H_NONE_V_PPF; 378 case VC4_SCALING_NONE << 2 | VC4_SCALING_TPZ: 379 return SCALER_CTL0_SCL_H_NONE_V_TPZ; 380 case VC4_SCALING_TPZ << 2 | VC4_SCALING_NONE: 381 return SCALER_CTL0_SCL_H_TPZ_V_NONE; 382 default: 383 case VC4_SCALING_NONE << 2 | VC4_SCALING_NONE: 384 /* The unity case is independently handled by 385 * SCALER_CTL0_UNITY. 386 */ 387 return 0; 388 } 389 } 390 391 static int vc4_plane_margins_adj(struct drm_plane_state *pstate) 392 { 393 struct vc4_plane_state *vc4_pstate = to_vc4_plane_state(pstate); 394 unsigned int left, right, top, bottom, adjhdisplay, adjvdisplay; 395 struct drm_crtc_state *crtc_state; 396 397 crtc_state = drm_atomic_get_new_crtc_state(pstate->state, 398 pstate->crtc); 399 400 vc4_crtc_get_margins(crtc_state, &left, &right, &top, &bottom); 401 if (!left && !right && !top && !bottom) 402 return 0; 403 404 if (left + right >= crtc_state->mode.hdisplay || 405 top + bottom >= crtc_state->mode.vdisplay) 406 return -EINVAL; 407 408 adjhdisplay = crtc_state->mode.hdisplay - (left + right); 409 vc4_pstate->crtc_x = DIV_ROUND_CLOSEST(vc4_pstate->crtc_x * 410 adjhdisplay, 411 crtc_state->mode.hdisplay); 412 vc4_pstate->crtc_x += left; 413 if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - right) 414 vc4_pstate->crtc_x = crtc_state->mode.hdisplay - right; 415 416 adjvdisplay = crtc_state->mode.vdisplay - (top + bottom); 417 vc4_pstate->crtc_y = DIV_ROUND_CLOSEST(vc4_pstate->crtc_y * 418 adjvdisplay, 419 crtc_state->mode.vdisplay); 420 vc4_pstate->crtc_y += top; 421 if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - bottom) 422 vc4_pstate->crtc_y = crtc_state->mode.vdisplay - bottom; 423 424 vc4_pstate->crtc_w = DIV_ROUND_CLOSEST(vc4_pstate->crtc_w * 425 adjhdisplay, 426 crtc_state->mode.hdisplay); 427 vc4_pstate->crtc_h = DIV_ROUND_CLOSEST(vc4_pstate->crtc_h * 428 adjvdisplay, 429 crtc_state->mode.vdisplay); 430 431 if (!vc4_pstate->crtc_w || !vc4_pstate->crtc_h) 432 return -EINVAL; 433 434 return 0; 435 } 436 437 static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state) 438 { 439 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 440 struct drm_framebuffer *fb = state->fb; 441 struct drm_gem_dma_object *bo; 442 int num_planes = fb->format->num_planes; 443 struct drm_crtc_state *crtc_state; 444 u32 h_subsample = fb->format->hsub; 445 u32 v_subsample = fb->format->vsub; 446 int i, ret; 447 448 crtc_state = drm_atomic_get_existing_crtc_state(state->state, 449 state->crtc); 450 if (!crtc_state) { 451 DRM_DEBUG_KMS("Invalid crtc state\n"); 452 return -EINVAL; 453 } 454 455 ret = drm_atomic_helper_check_plane_state(state, crtc_state, 1, 456 INT_MAX, true, true); 457 if (ret) 458 return ret; 459 460 for (i = 0; i < num_planes; i++) { 461 bo = drm_fb_dma_get_gem_obj(fb, i); 462 vc4_state->offsets[i] = bo->dma_addr + fb->offsets[i]; 463 } 464 465 /* 466 * We don't support subpixel source positioning for scaling, 467 * but fractional coordinates can be generated by clipping 468 * so just round for now 469 */ 470 vc4_state->src_x = DIV_ROUND_CLOSEST(state->src.x1, 1 << 16); 471 vc4_state->src_y = DIV_ROUND_CLOSEST(state->src.y1, 1 << 16); 472 vc4_state->src_w[0] = DIV_ROUND_CLOSEST(state->src.x2, 1 << 16) - vc4_state->src_x; 473 vc4_state->src_h[0] = DIV_ROUND_CLOSEST(state->src.y2, 1 << 16) - vc4_state->src_y; 474 475 vc4_state->crtc_x = state->dst.x1; 476 vc4_state->crtc_y = state->dst.y1; 477 vc4_state->crtc_w = state->dst.x2 - state->dst.x1; 478 vc4_state->crtc_h = state->dst.y2 - state->dst.y1; 479 480 ret = vc4_plane_margins_adj(state); 481 if (ret) 482 return ret; 483 484 vc4_state->x_scaling[0] = vc4_get_scaling_mode(vc4_state->src_w[0], 485 vc4_state->crtc_w); 486 vc4_state->y_scaling[0] = vc4_get_scaling_mode(vc4_state->src_h[0], 487 vc4_state->crtc_h); 488 489 vc4_state->is_unity = (vc4_state->x_scaling[0] == VC4_SCALING_NONE && 490 vc4_state->y_scaling[0] == VC4_SCALING_NONE); 491 492 if (num_planes > 1) { 493 vc4_state->is_yuv = true; 494 495 vc4_state->src_w[1] = vc4_state->src_w[0] / h_subsample; 496 vc4_state->src_h[1] = vc4_state->src_h[0] / v_subsample; 497 498 vc4_state->x_scaling[1] = 499 vc4_get_scaling_mode(vc4_state->src_w[1], 500 vc4_state->crtc_w); 501 vc4_state->y_scaling[1] = 502 vc4_get_scaling_mode(vc4_state->src_h[1], 503 vc4_state->crtc_h); 504 505 /* YUV conversion requires that horizontal scaling be enabled 506 * on the UV plane even if vc4_get_scaling_mode() returned 507 * VC4_SCALING_NONE (which can happen when the down-scaling 508 * ratio is 0.5). Let's force it to VC4_SCALING_PPF in this 509 * case. 510 */ 511 if (vc4_state->x_scaling[1] == VC4_SCALING_NONE) 512 vc4_state->x_scaling[1] = VC4_SCALING_PPF; 513 } else { 514 vc4_state->is_yuv = false; 515 vc4_state->x_scaling[1] = VC4_SCALING_NONE; 516 vc4_state->y_scaling[1] = VC4_SCALING_NONE; 517 } 518 519 return 0; 520 } 521 522 static void vc4_write_tpz(struct vc4_plane_state *vc4_state, u32 src, u32 dst) 523 { 524 u32 scale, recip; 525 526 scale = (1 << 16) * src / dst; 527 528 /* The specs note that while the reciprocal would be defined 529 * as (1<<32)/scale, ~0 is close enough. 530 */ 531 recip = ~0 / scale; 532 533 vc4_dlist_write(vc4_state, 534 VC4_SET_FIELD(scale, SCALER_TPZ0_SCALE) | 535 VC4_SET_FIELD(0, SCALER_TPZ0_IPHASE)); 536 vc4_dlist_write(vc4_state, 537 VC4_SET_FIELD(recip, SCALER_TPZ1_RECIP)); 538 } 539 540 static void vc4_write_ppf(struct vc4_plane_state *vc4_state, u32 src, u32 dst) 541 { 542 u32 scale = (1 << 16) * src / dst; 543 544 vc4_dlist_write(vc4_state, 545 SCALER_PPF_AGC | 546 VC4_SET_FIELD(scale, SCALER_PPF_SCALE) | 547 VC4_SET_FIELD(0, SCALER_PPF_IPHASE)); 548 } 549 550 static u32 vc4_lbm_size(struct drm_plane_state *state) 551 { 552 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 553 struct vc4_dev *vc4 = to_vc4_dev(state->plane->dev); 554 u32 pix_per_line; 555 u32 lbm; 556 557 /* LBM is not needed when there's no vertical scaling. */ 558 if (vc4_state->y_scaling[0] == VC4_SCALING_NONE && 559 vc4_state->y_scaling[1] == VC4_SCALING_NONE) 560 return 0; 561 562 /* 563 * This can be further optimized in the RGB/YUV444 case if the PPF 564 * decimation factor is between 0.5 and 1.0 by using crtc_w. 565 * 566 * It's not an issue though, since in that case since src_w[0] is going 567 * to be greater than or equal to crtc_w. 568 */ 569 if (vc4_state->x_scaling[0] == VC4_SCALING_TPZ) 570 pix_per_line = vc4_state->crtc_w; 571 else 572 pix_per_line = vc4_state->src_w[0]; 573 574 if (!vc4_state->is_yuv) { 575 if (vc4_state->y_scaling[0] == VC4_SCALING_TPZ) 576 lbm = pix_per_line * 8; 577 else { 578 /* In special cases, this multiplier might be 12. */ 579 lbm = pix_per_line * 16; 580 } 581 } else { 582 /* There are cases for this going down to a multiplier 583 * of 2, but according to the firmware source, the 584 * table in the docs is somewhat wrong. 585 */ 586 lbm = pix_per_line * 16; 587 } 588 589 /* Align it to 64 or 128 (hvs5) bytes */ 590 lbm = roundup(lbm, vc4->is_vc5 ? 128 : 64); 591 592 /* Each "word" of the LBM memory contains 2 or 4 (hvs5) pixels */ 593 lbm /= vc4->is_vc5 ? 4 : 2; 594 595 return lbm; 596 } 597 598 static void vc4_write_scaling_parameters(struct drm_plane_state *state, 599 int channel) 600 { 601 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 602 603 /* Ch0 H-PPF Word 0: Scaling Parameters */ 604 if (vc4_state->x_scaling[channel] == VC4_SCALING_PPF) { 605 vc4_write_ppf(vc4_state, 606 vc4_state->src_w[channel], vc4_state->crtc_w); 607 } 608 609 /* Ch0 V-PPF Words 0-1: Scaling Parameters, Context */ 610 if (vc4_state->y_scaling[channel] == VC4_SCALING_PPF) { 611 vc4_write_ppf(vc4_state, 612 vc4_state->src_h[channel], vc4_state->crtc_h); 613 vc4_dlist_write(vc4_state, 0xc0c0c0c0); 614 } 615 616 /* Ch0 H-TPZ Words 0-1: Scaling Parameters, Recip */ 617 if (vc4_state->x_scaling[channel] == VC4_SCALING_TPZ) { 618 vc4_write_tpz(vc4_state, 619 vc4_state->src_w[channel], vc4_state->crtc_w); 620 } 621 622 /* Ch0 V-TPZ Words 0-2: Scaling Parameters, Recip, Context */ 623 if (vc4_state->y_scaling[channel] == VC4_SCALING_TPZ) { 624 vc4_write_tpz(vc4_state, 625 vc4_state->src_h[channel], vc4_state->crtc_h); 626 vc4_dlist_write(vc4_state, 0xc0c0c0c0); 627 } 628 } 629 630 static void vc4_plane_calc_load(struct drm_plane_state *state) 631 { 632 unsigned int hvs_load_shift, vrefresh, i; 633 struct drm_framebuffer *fb = state->fb; 634 struct vc4_plane_state *vc4_state; 635 struct drm_crtc_state *crtc_state; 636 unsigned int vscale_factor; 637 638 vc4_state = to_vc4_plane_state(state); 639 crtc_state = drm_atomic_get_existing_crtc_state(state->state, 640 state->crtc); 641 vrefresh = drm_mode_vrefresh(&crtc_state->adjusted_mode); 642 643 /* The HVS is able to process 2 pixels/cycle when scaling the source, 644 * 4 pixels/cycle otherwise. 645 * Alpha blending step seems to be pipelined and it's always operating 646 * at 4 pixels/cycle, so the limiting aspect here seems to be the 647 * scaler block. 648 * HVS load is expressed in clk-cycles/sec (AKA Hz). 649 */ 650 if (vc4_state->x_scaling[0] != VC4_SCALING_NONE || 651 vc4_state->x_scaling[1] != VC4_SCALING_NONE || 652 vc4_state->y_scaling[0] != VC4_SCALING_NONE || 653 vc4_state->y_scaling[1] != VC4_SCALING_NONE) 654 hvs_load_shift = 1; 655 else 656 hvs_load_shift = 2; 657 658 vc4_state->membus_load = 0; 659 vc4_state->hvs_load = 0; 660 for (i = 0; i < fb->format->num_planes; i++) { 661 /* Even if the bandwidth/plane required for a single frame is 662 * 663 * vc4_state->src_w[i] * vc4_state->src_h[i] * cpp * vrefresh 664 * 665 * when downscaling, we have to read more pixels per line in 666 * the time frame reserved for a single line, so the bandwidth 667 * demand can be punctually higher. To account for that, we 668 * calculate the down-scaling factor and multiply the plane 669 * load by this number. We're likely over-estimating the read 670 * demand, but that's better than under-estimating it. 671 */ 672 vscale_factor = DIV_ROUND_UP(vc4_state->src_h[i], 673 vc4_state->crtc_h); 674 vc4_state->membus_load += vc4_state->src_w[i] * 675 vc4_state->src_h[i] * vscale_factor * 676 fb->format->cpp[i]; 677 vc4_state->hvs_load += vc4_state->crtc_h * vc4_state->crtc_w; 678 } 679 680 vc4_state->hvs_load *= vrefresh; 681 vc4_state->hvs_load >>= hvs_load_shift; 682 vc4_state->membus_load *= vrefresh; 683 } 684 685 static int vc4_plane_allocate_lbm(struct drm_plane_state *state) 686 { 687 struct vc4_dev *vc4 = to_vc4_dev(state->plane->dev); 688 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 689 unsigned long irqflags; 690 u32 lbm_size; 691 692 lbm_size = vc4_lbm_size(state); 693 if (!lbm_size) 694 return 0; 695 696 if (WARN_ON(!vc4_state->lbm_offset)) 697 return -EINVAL; 698 699 /* Allocate the LBM memory that the HVS will use for temporary 700 * storage due to our scaling/format conversion. 701 */ 702 if (!drm_mm_node_allocated(&vc4_state->lbm)) { 703 int ret; 704 705 spin_lock_irqsave(&vc4->hvs->mm_lock, irqflags); 706 ret = drm_mm_insert_node_generic(&vc4->hvs->lbm_mm, 707 &vc4_state->lbm, 708 lbm_size, 709 vc4->is_vc5 ? 64 : 32, 710 0, 0); 711 spin_unlock_irqrestore(&vc4->hvs->mm_lock, irqflags); 712 713 if (ret) 714 return ret; 715 } else { 716 WARN_ON_ONCE(lbm_size != vc4_state->lbm.size); 717 } 718 719 vc4_state->dlist[vc4_state->lbm_offset] = vc4_state->lbm.start; 720 721 return 0; 722 } 723 724 /* 725 * The colorspace conversion matrices are held in 3 entries in the dlist. 726 * Create an array of them, with entries for each full and limited mode, and 727 * each supported colorspace. 728 */ 729 static const u32 colorspace_coeffs[2][DRM_COLOR_ENCODING_MAX][3] = { 730 { 731 /* Limited range */ 732 { 733 /* BT601 */ 734 SCALER_CSC0_ITR_R_601_5, 735 SCALER_CSC1_ITR_R_601_5, 736 SCALER_CSC2_ITR_R_601_5, 737 }, { 738 /* BT709 */ 739 SCALER_CSC0_ITR_R_709_3, 740 SCALER_CSC1_ITR_R_709_3, 741 SCALER_CSC2_ITR_R_709_3, 742 }, { 743 /* BT2020 */ 744 SCALER_CSC0_ITR_R_2020, 745 SCALER_CSC1_ITR_R_2020, 746 SCALER_CSC2_ITR_R_2020, 747 } 748 }, { 749 /* Full range */ 750 { 751 /* JFIF */ 752 SCALER_CSC0_JPEG_JFIF, 753 SCALER_CSC1_JPEG_JFIF, 754 SCALER_CSC2_JPEG_JFIF, 755 }, { 756 /* BT709 */ 757 SCALER_CSC0_ITR_R_709_3_FR, 758 SCALER_CSC1_ITR_R_709_3_FR, 759 SCALER_CSC2_ITR_R_709_3_FR, 760 }, { 761 /* BT2020 */ 762 SCALER_CSC0_ITR_R_2020_FR, 763 SCALER_CSC1_ITR_R_2020_FR, 764 SCALER_CSC2_ITR_R_2020_FR, 765 } 766 } 767 }; 768 769 static u32 vc4_hvs4_get_alpha_blend_mode(struct drm_plane_state *state) 770 { 771 if (!state->fb->format->has_alpha) 772 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED, 773 SCALER_POS2_ALPHA_MODE); 774 775 switch (state->pixel_blend_mode) { 776 case DRM_MODE_BLEND_PIXEL_NONE: 777 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED, 778 SCALER_POS2_ALPHA_MODE); 779 default: 780 case DRM_MODE_BLEND_PREMULTI: 781 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE, 782 SCALER_POS2_ALPHA_MODE) | 783 SCALER_POS2_ALPHA_PREMULT; 784 case DRM_MODE_BLEND_COVERAGE: 785 return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE, 786 SCALER_POS2_ALPHA_MODE); 787 } 788 } 789 790 static u32 vc4_hvs5_get_alpha_blend_mode(struct drm_plane_state *state) 791 { 792 if (!state->fb->format->has_alpha) 793 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED, 794 SCALER5_CTL2_ALPHA_MODE); 795 796 switch (state->pixel_blend_mode) { 797 case DRM_MODE_BLEND_PIXEL_NONE: 798 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED, 799 SCALER5_CTL2_ALPHA_MODE); 800 default: 801 case DRM_MODE_BLEND_PREMULTI: 802 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE, 803 SCALER5_CTL2_ALPHA_MODE) | 804 SCALER5_CTL2_ALPHA_PREMULT; 805 case DRM_MODE_BLEND_COVERAGE: 806 return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE, 807 SCALER5_CTL2_ALPHA_MODE); 808 } 809 } 810 811 /* Writes out a full display list for an active plane to the plane's 812 * private dlist state. 813 */ 814 static int vc4_plane_mode_set(struct drm_plane *plane, 815 struct drm_plane_state *state) 816 { 817 struct vc4_dev *vc4 = to_vc4_dev(plane->dev); 818 struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 819 struct drm_framebuffer *fb = state->fb; 820 u32 ctl0_offset = vc4_state->dlist_count; 821 const struct hvs_format *format = vc4_get_hvs_format(fb->format->format); 822 u64 base_format_mod = fourcc_mod_broadcom_mod(fb->modifier); 823 int num_planes = fb->format->num_planes; 824 u32 h_subsample = fb->format->hsub; 825 u32 v_subsample = fb->format->vsub; 826 bool mix_plane_alpha; 827 bool covers_screen; 828 u32 scl0, scl1, pitch0; 829 u32 tiling, src_y; 830 u32 hvs_format = format->hvs; 831 unsigned int rotation; 832 int ret, i; 833 834 if (vc4_state->dlist_initialized) 835 return 0; 836 837 ret = vc4_plane_setup_clipping_and_scaling(state); 838 if (ret) 839 return ret; 840 841 /* SCL1 is used for Cb/Cr scaling of planar formats. For RGB 842 * and 4:4:4, scl1 should be set to scl0 so both channels of 843 * the scaler do the same thing. For YUV, the Y plane needs 844 * to be put in channel 1 and Cb/Cr in channel 0, so we swap 845 * the scl fields here. 846 */ 847 if (num_planes == 1) { 848 scl0 = vc4_get_scl_field(state, 0); 849 scl1 = scl0; 850 } else { 851 scl0 = vc4_get_scl_field(state, 1); 852 scl1 = vc4_get_scl_field(state, 0); 853 } 854 855 rotation = drm_rotation_simplify(state->rotation, 856 DRM_MODE_ROTATE_0 | 857 DRM_MODE_REFLECT_X | 858 DRM_MODE_REFLECT_Y); 859 860 /* We must point to the last line when Y reflection is enabled. */ 861 src_y = vc4_state->src_y; 862 if (rotation & DRM_MODE_REFLECT_Y) 863 src_y += vc4_state->src_h[0] - 1; 864 865 switch (base_format_mod) { 866 case DRM_FORMAT_MOD_LINEAR: 867 tiling = SCALER_CTL0_TILING_LINEAR; 868 pitch0 = VC4_SET_FIELD(fb->pitches[0], SCALER_SRC_PITCH); 869 870 /* Adjust the base pointer to the first pixel to be scanned 871 * out. 872 */ 873 for (i = 0; i < num_planes; i++) { 874 vc4_state->offsets[i] += src_y / 875 (i ? v_subsample : 1) * 876 fb->pitches[i]; 877 878 vc4_state->offsets[i] += vc4_state->src_x / 879 (i ? h_subsample : 1) * 880 fb->format->cpp[i]; 881 } 882 883 break; 884 885 case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: { 886 u32 tile_size_shift = 12; /* T tiles are 4kb */ 887 /* Whole-tile offsets, mostly for setting the pitch. */ 888 u32 tile_w_shift = fb->format->cpp[0] == 2 ? 6 : 5; 889 u32 tile_h_shift = 5; /* 16 and 32bpp are 32 pixels high */ 890 u32 tile_w_mask = (1 << tile_w_shift) - 1; 891 /* The height mask on 32-bit-per-pixel tiles is 63, i.e. twice 892 * the height (in pixels) of a 4k tile. 893 */ 894 u32 tile_h_mask = (2 << tile_h_shift) - 1; 895 /* For T-tiled, the FB pitch is "how many bytes from one row to 896 * the next, such that 897 * 898 * pitch * tile_h == tile_size * tiles_per_row 899 */ 900 u32 tiles_w = fb->pitches[0] >> (tile_size_shift - tile_h_shift); 901 u32 tiles_l = vc4_state->src_x >> tile_w_shift; 902 u32 tiles_r = tiles_w - tiles_l; 903 u32 tiles_t = src_y >> tile_h_shift; 904 /* Intra-tile offsets, which modify the base address (the 905 * SCALER_PITCH0_TILE_Y_OFFSET tells HVS how to walk from that 906 * base address). 907 */ 908 u32 tile_y = (src_y >> 4) & 1; 909 u32 subtile_y = (src_y >> 2) & 3; 910 u32 utile_y = src_y & 3; 911 u32 x_off = vc4_state->src_x & tile_w_mask; 912 u32 y_off = src_y & tile_h_mask; 913 914 /* When Y reflection is requested we must set the 915 * SCALER_PITCH0_TILE_LINE_DIR flag to tell HVS that all lines 916 * after the initial one should be fetched in descending order, 917 * which makes sense since we start from the last line and go 918 * backward. 919 * Don't know why we need y_off = max_y_off - y_off, but it's 920 * definitely required (I guess it's also related to the "going 921 * backward" situation). 922 */ 923 if (rotation & DRM_MODE_REFLECT_Y) { 924 y_off = tile_h_mask - y_off; 925 pitch0 = SCALER_PITCH0_TILE_LINE_DIR; 926 } else { 927 pitch0 = 0; 928 } 929 930 tiling = SCALER_CTL0_TILING_256B_OR_T; 931 pitch0 |= (VC4_SET_FIELD(x_off, SCALER_PITCH0_SINK_PIX) | 932 VC4_SET_FIELD(y_off, SCALER_PITCH0_TILE_Y_OFFSET) | 933 VC4_SET_FIELD(tiles_l, SCALER_PITCH0_TILE_WIDTH_L) | 934 VC4_SET_FIELD(tiles_r, SCALER_PITCH0_TILE_WIDTH_R)); 935 vc4_state->offsets[0] += tiles_t * (tiles_w << tile_size_shift); 936 vc4_state->offsets[0] += subtile_y << 8; 937 vc4_state->offsets[0] += utile_y << 4; 938 939 /* Rows of tiles alternate left-to-right and right-to-left. */ 940 if (tiles_t & 1) { 941 pitch0 |= SCALER_PITCH0_TILE_INITIAL_LINE_DIR; 942 vc4_state->offsets[0] += (tiles_w - tiles_l) << 943 tile_size_shift; 944 vc4_state->offsets[0] -= (1 + !tile_y) << 10; 945 } else { 946 vc4_state->offsets[0] += tiles_l << tile_size_shift; 947 vc4_state->offsets[0] += tile_y << 10; 948 } 949 950 break; 951 } 952 953 case DRM_FORMAT_MOD_BROADCOM_SAND64: 954 case DRM_FORMAT_MOD_BROADCOM_SAND128: 955 case DRM_FORMAT_MOD_BROADCOM_SAND256: { 956 uint32_t param = fourcc_mod_broadcom_param(fb->modifier); 957 958 if (param > SCALER_TILE_HEIGHT_MASK) { 959 DRM_DEBUG_KMS("SAND height too large (%d)\n", 960 param); 961 return -EINVAL; 962 } 963 964 if (fb->format->format == DRM_FORMAT_P030) { 965 hvs_format = HVS_PIXEL_FORMAT_YCBCR_10BIT; 966 tiling = SCALER_CTL0_TILING_128B; 967 } else { 968 hvs_format = HVS_PIXEL_FORMAT_H264; 969 970 switch (base_format_mod) { 971 case DRM_FORMAT_MOD_BROADCOM_SAND64: 972 tiling = SCALER_CTL0_TILING_64B; 973 break; 974 case DRM_FORMAT_MOD_BROADCOM_SAND128: 975 tiling = SCALER_CTL0_TILING_128B; 976 break; 977 case DRM_FORMAT_MOD_BROADCOM_SAND256: 978 tiling = SCALER_CTL0_TILING_256B_OR_T; 979 break; 980 default: 981 return -EINVAL; 982 } 983 } 984 985 /* Adjust the base pointer to the first pixel to be scanned 986 * out. 987 * 988 * For P030, y_ptr [31:4] is the 128bit word for the start pixel 989 * y_ptr [3:0] is the pixel (0-11) contained within that 128bit 990 * word that should be taken as the first pixel. 991 * Ditto uv_ptr [31:4] vs [3:0], however [3:0] contains the 992 * element within the 128bit word, eg for pixel 3 the value 993 * should be 6. 994 */ 995 for (i = 0; i < num_planes; i++) { 996 u32 tile_w, tile, x_off, pix_per_tile; 997 998 if (fb->format->format == DRM_FORMAT_P030) { 999 /* 1000 * Spec says: bits [31:4] of the given address 1001 * should point to the 128-bit word containing 1002 * the desired starting pixel, and bits[3:0] 1003 * should be between 0 and 11, indicating which 1004 * of the 12-pixels in that 128-bit word is the 1005 * first pixel to be used 1006 */ 1007 u32 remaining_pixels = vc4_state->src_x % 96; 1008 u32 aligned = remaining_pixels / 12; 1009 u32 last_bits = remaining_pixels % 12; 1010 1011 x_off = aligned * 16 + last_bits; 1012 tile_w = 128; 1013 pix_per_tile = 96; 1014 } else { 1015 switch (base_format_mod) { 1016 case DRM_FORMAT_MOD_BROADCOM_SAND64: 1017 tile_w = 64; 1018 break; 1019 case DRM_FORMAT_MOD_BROADCOM_SAND128: 1020 tile_w = 128; 1021 break; 1022 case DRM_FORMAT_MOD_BROADCOM_SAND256: 1023 tile_w = 256; 1024 break; 1025 default: 1026 return -EINVAL; 1027 } 1028 pix_per_tile = tile_w / fb->format->cpp[0]; 1029 x_off = (vc4_state->src_x % pix_per_tile) / 1030 (i ? h_subsample : 1) * 1031 fb->format->cpp[i]; 1032 } 1033 1034 tile = vc4_state->src_x / pix_per_tile; 1035 1036 vc4_state->offsets[i] += param * tile_w * tile; 1037 vc4_state->offsets[i] += src_y / 1038 (i ? v_subsample : 1) * 1039 tile_w; 1040 vc4_state->offsets[i] += x_off & ~(i ? 1 : 0); 1041 } 1042 1043 pitch0 = VC4_SET_FIELD(param, SCALER_TILE_HEIGHT); 1044 break; 1045 } 1046 1047 default: 1048 DRM_DEBUG_KMS("Unsupported FB tiling flag 0x%16llx", 1049 (long long)fb->modifier); 1050 return -EINVAL; 1051 } 1052 1053 /* Don't waste cycles mixing with plane alpha if the set alpha 1054 * is opaque or there is no per-pixel alpha information. 1055 * In any case we use the alpha property value as the fixed alpha. 1056 */ 1057 mix_plane_alpha = state->alpha != DRM_BLEND_ALPHA_OPAQUE && 1058 fb->format->has_alpha; 1059 1060 if (!vc4->is_vc5) { 1061 /* Control word */ 1062 vc4_dlist_write(vc4_state, 1063 SCALER_CTL0_VALID | 1064 (rotation & DRM_MODE_REFLECT_X ? SCALER_CTL0_HFLIP : 0) | 1065 (rotation & DRM_MODE_REFLECT_Y ? SCALER_CTL0_VFLIP : 0) | 1066 VC4_SET_FIELD(SCALER_CTL0_RGBA_EXPAND_ROUND, SCALER_CTL0_RGBA_EXPAND) | 1067 (format->pixel_order << SCALER_CTL0_ORDER_SHIFT) | 1068 (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) | 1069 VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) | 1070 (vc4_state->is_unity ? SCALER_CTL0_UNITY : 0) | 1071 VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) | 1072 VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1)); 1073 1074 /* Position Word 0: Image Positions and Alpha Value */ 1075 vc4_state->pos0_offset = vc4_state->dlist_count; 1076 vc4_dlist_write(vc4_state, 1077 VC4_SET_FIELD(state->alpha >> 8, SCALER_POS0_FIXED_ALPHA) | 1078 VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) | 1079 VC4_SET_FIELD(vc4_state->crtc_y, SCALER_POS0_START_Y)); 1080 1081 /* Position Word 1: Scaled Image Dimensions. */ 1082 if (!vc4_state->is_unity) { 1083 vc4_dlist_write(vc4_state, 1084 VC4_SET_FIELD(vc4_state->crtc_w, 1085 SCALER_POS1_SCL_WIDTH) | 1086 VC4_SET_FIELD(vc4_state->crtc_h, 1087 SCALER_POS1_SCL_HEIGHT)); 1088 } 1089 1090 /* Position Word 2: Source Image Size, Alpha */ 1091 vc4_state->pos2_offset = vc4_state->dlist_count; 1092 vc4_dlist_write(vc4_state, 1093 (mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) | 1094 vc4_hvs4_get_alpha_blend_mode(state) | 1095 VC4_SET_FIELD(vc4_state->src_w[0], 1096 SCALER_POS2_WIDTH) | 1097 VC4_SET_FIELD(vc4_state->src_h[0], 1098 SCALER_POS2_HEIGHT)); 1099 1100 /* Position Word 3: Context. Written by the HVS. */ 1101 vc4_dlist_write(vc4_state, 0xc0c0c0c0); 1102 1103 } else { 1104 /* Control word */ 1105 vc4_dlist_write(vc4_state, 1106 SCALER_CTL0_VALID | 1107 (format->pixel_order_hvs5 << SCALER_CTL0_ORDER_SHIFT) | 1108 (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) | 1109 VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) | 1110 (vc4_state->is_unity ? 1111 SCALER5_CTL0_UNITY : 0) | 1112 VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) | 1113 VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1) | 1114 SCALER5_CTL0_ALPHA_EXPAND | 1115 SCALER5_CTL0_RGB_EXPAND); 1116 1117 /* Position Word 0: Image Positions and Alpha Value */ 1118 vc4_state->pos0_offset = vc4_state->dlist_count; 1119 vc4_dlist_write(vc4_state, 1120 (rotation & DRM_MODE_REFLECT_Y ? 1121 SCALER5_POS0_VFLIP : 0) | 1122 VC4_SET_FIELD(vc4_state->crtc_x, 1123 SCALER_POS0_START_X) | 1124 (rotation & DRM_MODE_REFLECT_X ? 1125 SCALER5_POS0_HFLIP : 0) | 1126 VC4_SET_FIELD(vc4_state->crtc_y, 1127 SCALER5_POS0_START_Y) 1128 ); 1129 1130 /* Control Word 2 */ 1131 vc4_dlist_write(vc4_state, 1132 VC4_SET_FIELD(state->alpha >> 4, 1133 SCALER5_CTL2_ALPHA) | 1134 vc4_hvs5_get_alpha_blend_mode(state) | 1135 (mix_plane_alpha ? 1136 SCALER5_CTL2_ALPHA_MIX : 0) 1137 ); 1138 1139 /* Position Word 1: Scaled Image Dimensions. */ 1140 if (!vc4_state->is_unity) { 1141 vc4_dlist_write(vc4_state, 1142 VC4_SET_FIELD(vc4_state->crtc_w, 1143 SCALER5_POS1_SCL_WIDTH) | 1144 VC4_SET_FIELD(vc4_state->crtc_h, 1145 SCALER5_POS1_SCL_HEIGHT)); 1146 } 1147 1148 /* Position Word 2: Source Image Size */ 1149 vc4_state->pos2_offset = vc4_state->dlist_count; 1150 vc4_dlist_write(vc4_state, 1151 VC4_SET_FIELD(vc4_state->src_w[0], 1152 SCALER5_POS2_WIDTH) | 1153 VC4_SET_FIELD(vc4_state->src_h[0], 1154 SCALER5_POS2_HEIGHT)); 1155 1156 /* Position Word 3: Context. Written by the HVS. */ 1157 vc4_dlist_write(vc4_state, 0xc0c0c0c0); 1158 } 1159 1160 1161 /* Pointer Word 0/1/2: RGB / Y / Cb / Cr Pointers 1162 * 1163 * The pointers may be any byte address. 1164 */ 1165 vc4_state->ptr0_offset = vc4_state->dlist_count; 1166 for (i = 0; i < num_planes; i++) 1167 vc4_dlist_write(vc4_state, vc4_state->offsets[i]); 1168 1169 /* Pointer Context Word 0/1/2: Written by the HVS */ 1170 for (i = 0; i < num_planes; i++) 1171 vc4_dlist_write(vc4_state, 0xc0c0c0c0); 1172 1173 /* Pitch word 0 */ 1174 vc4_dlist_write(vc4_state, pitch0); 1175 1176 /* Pitch word 1/2 */ 1177 for (i = 1; i < num_planes; i++) { 1178 if (hvs_format != HVS_PIXEL_FORMAT_H264 && 1179 hvs_format != HVS_PIXEL_FORMAT_YCBCR_10BIT) { 1180 vc4_dlist_write(vc4_state, 1181 VC4_SET_FIELD(fb->pitches[i], 1182 SCALER_SRC_PITCH)); 1183 } else { 1184 vc4_dlist_write(vc4_state, pitch0); 1185 } 1186 } 1187 1188 /* Colorspace conversion words */ 1189 if (vc4_state->is_yuv) { 1190 enum drm_color_encoding color_encoding = state->color_encoding; 1191 enum drm_color_range color_range = state->color_range; 1192 const u32 *ccm; 1193 1194 if (color_encoding >= DRM_COLOR_ENCODING_MAX) 1195 color_encoding = DRM_COLOR_YCBCR_BT601; 1196 if (color_range >= DRM_COLOR_RANGE_MAX) 1197 color_range = DRM_COLOR_YCBCR_LIMITED_RANGE; 1198 1199 ccm = colorspace_coeffs[color_range][color_encoding]; 1200 1201 vc4_dlist_write(vc4_state, ccm[0]); 1202 vc4_dlist_write(vc4_state, ccm[1]); 1203 vc4_dlist_write(vc4_state, ccm[2]); 1204 } 1205 1206 vc4_state->lbm_offset = 0; 1207 1208 if (vc4_state->x_scaling[0] != VC4_SCALING_NONE || 1209 vc4_state->x_scaling[1] != VC4_SCALING_NONE || 1210 vc4_state->y_scaling[0] != VC4_SCALING_NONE || 1211 vc4_state->y_scaling[1] != VC4_SCALING_NONE) { 1212 /* Reserve a slot for the LBM Base Address. The real value will 1213 * be set when calling vc4_plane_allocate_lbm(). 1214 */ 1215 if (vc4_state->y_scaling[0] != VC4_SCALING_NONE || 1216 vc4_state->y_scaling[1] != VC4_SCALING_NONE) { 1217 vc4_state->lbm_offset = vc4_state->dlist_count; 1218 vc4_dlist_counter_increment(vc4_state); 1219 } 1220 1221 if (num_planes > 1) { 1222 /* Emit Cb/Cr as channel 0 and Y as channel 1223 * 1. This matches how we set up scl0/scl1 1224 * above. 1225 */ 1226 vc4_write_scaling_parameters(state, 1); 1227 } 1228 vc4_write_scaling_parameters(state, 0); 1229 1230 /* If any PPF setup was done, then all the kernel 1231 * pointers get uploaded. 1232 */ 1233 if (vc4_state->x_scaling[0] == VC4_SCALING_PPF || 1234 vc4_state->y_scaling[0] == VC4_SCALING_PPF || 1235 vc4_state->x_scaling[1] == VC4_SCALING_PPF || 1236 vc4_state->y_scaling[1] == VC4_SCALING_PPF) { 1237 u32 kernel = VC4_SET_FIELD(vc4->hvs->mitchell_netravali_filter.start, 1238 SCALER_PPF_KERNEL_OFFSET); 1239 1240 /* HPPF plane 0 */ 1241 vc4_dlist_write(vc4_state, kernel); 1242 /* VPPF plane 0 */ 1243 vc4_dlist_write(vc4_state, kernel); 1244 /* HPPF plane 1 */ 1245 vc4_dlist_write(vc4_state, kernel); 1246 /* VPPF plane 1 */ 1247 vc4_dlist_write(vc4_state, kernel); 1248 } 1249 } 1250 1251 vc4_state->dlist[ctl0_offset] |= 1252 VC4_SET_FIELD(vc4_state->dlist_count, SCALER_CTL0_SIZE); 1253 1254 /* crtc_* are already clipped coordinates. */ 1255 covers_screen = vc4_state->crtc_x == 0 && vc4_state->crtc_y == 0 && 1256 vc4_state->crtc_w == state->crtc->mode.hdisplay && 1257 vc4_state->crtc_h == state->crtc->mode.vdisplay; 1258 /* Background fill might be necessary when the plane has per-pixel 1259 * alpha content or a non-opaque plane alpha and could blend from the 1260 * background or does not cover the entire screen. 1261 */ 1262 vc4_state->needs_bg_fill = fb->format->has_alpha || !covers_screen || 1263 state->alpha != DRM_BLEND_ALPHA_OPAQUE; 1264 1265 /* Flag the dlist as initialized to avoid checking it twice in case 1266 * the async update check already called vc4_plane_mode_set() and 1267 * decided to fallback to sync update because async update was not 1268 * possible. 1269 */ 1270 vc4_state->dlist_initialized = 1; 1271 1272 vc4_plane_calc_load(state); 1273 1274 return 0; 1275 } 1276 1277 /* If a modeset involves changing the setup of a plane, the atomic 1278 * infrastructure will call this to validate a proposed plane setup. 1279 * However, if a plane isn't getting updated, this (and the 1280 * corresponding vc4_plane_atomic_update) won't get called. Thus, we 1281 * compute the dlist here and have all active plane dlists get updated 1282 * in the CRTC's flush. 1283 */ 1284 static int vc4_plane_atomic_check(struct drm_plane *plane, 1285 struct drm_atomic_state *state) 1286 { 1287 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 1288 plane); 1289 struct vc4_plane_state *vc4_state = to_vc4_plane_state(new_plane_state); 1290 int ret; 1291 1292 vc4_state->dlist_count = 0; 1293 1294 if (!plane_enabled(new_plane_state)) 1295 return 0; 1296 1297 ret = vc4_plane_mode_set(plane, new_plane_state); 1298 if (ret) 1299 return ret; 1300 1301 return vc4_plane_allocate_lbm(new_plane_state); 1302 } 1303 1304 static void vc4_plane_atomic_update(struct drm_plane *plane, 1305 struct drm_atomic_state *state) 1306 { 1307 /* No contents here. Since we don't know where in the CRTC's 1308 * dlist we should be stored, our dlist is uploaded to the 1309 * hardware with vc4_plane_write_dlist() at CRTC atomic_flush 1310 * time. 1311 */ 1312 } 1313 1314 u32 vc4_plane_write_dlist(struct drm_plane *plane, u32 __iomem *dlist) 1315 { 1316 struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state); 1317 int i; 1318 int idx; 1319 1320 if (!drm_dev_enter(plane->dev, &idx)) 1321 goto out; 1322 1323 vc4_state->hw_dlist = dlist; 1324 1325 /* Can't memcpy_toio() because it needs to be 32-bit writes. */ 1326 for (i = 0; i < vc4_state->dlist_count; i++) 1327 writel(vc4_state->dlist[i], &dlist[i]); 1328 1329 drm_dev_exit(idx); 1330 1331 out: 1332 return vc4_state->dlist_count; 1333 } 1334 1335 u32 vc4_plane_dlist_size(const struct drm_plane_state *state) 1336 { 1337 const struct vc4_plane_state *vc4_state = to_vc4_plane_state(state); 1338 1339 return vc4_state->dlist_count; 1340 } 1341 1342 /* Updates the plane to immediately (well, once the FIFO needs 1343 * refilling) scan out from at a new framebuffer. 1344 */ 1345 void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb) 1346 { 1347 struct vc4_plane_state *vc4_state = to_vc4_plane_state(plane->state); 1348 struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, 0); 1349 uint32_t addr; 1350 int idx; 1351 1352 if (!drm_dev_enter(plane->dev, &idx)) 1353 return; 1354 1355 /* We're skipping the address adjustment for negative origin, 1356 * because this is only called on the primary plane. 1357 */ 1358 WARN_ON_ONCE(plane->state->crtc_x < 0 || plane->state->crtc_y < 0); 1359 addr = bo->dma_addr + fb->offsets[0]; 1360 1361 /* Write the new address into the hardware immediately. The 1362 * scanout will start from this address as soon as the FIFO 1363 * needs to refill with pixels. 1364 */ 1365 writel(addr, &vc4_state->hw_dlist[vc4_state->ptr0_offset]); 1366 1367 /* Also update the CPU-side dlist copy, so that any later 1368 * atomic updates that don't do a new modeset on our plane 1369 * also use our updated address. 1370 */ 1371 vc4_state->dlist[vc4_state->ptr0_offset] = addr; 1372 1373 drm_dev_exit(idx); 1374 } 1375 1376 static void vc4_plane_atomic_async_update(struct drm_plane *plane, 1377 struct drm_atomic_state *state) 1378 { 1379 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 1380 plane); 1381 struct vc4_plane_state *vc4_state, *new_vc4_state; 1382 int idx; 1383 1384 if (!drm_dev_enter(plane->dev, &idx)) 1385 return; 1386 1387 swap(plane->state->fb, new_plane_state->fb); 1388 plane->state->crtc_x = new_plane_state->crtc_x; 1389 plane->state->crtc_y = new_plane_state->crtc_y; 1390 plane->state->crtc_w = new_plane_state->crtc_w; 1391 plane->state->crtc_h = new_plane_state->crtc_h; 1392 plane->state->src_x = new_plane_state->src_x; 1393 plane->state->src_y = new_plane_state->src_y; 1394 plane->state->src_w = new_plane_state->src_w; 1395 plane->state->src_h = new_plane_state->src_h; 1396 plane->state->alpha = new_plane_state->alpha; 1397 plane->state->pixel_blend_mode = new_plane_state->pixel_blend_mode; 1398 plane->state->rotation = new_plane_state->rotation; 1399 plane->state->zpos = new_plane_state->zpos; 1400 plane->state->normalized_zpos = new_plane_state->normalized_zpos; 1401 plane->state->color_encoding = new_plane_state->color_encoding; 1402 plane->state->color_range = new_plane_state->color_range; 1403 plane->state->src = new_plane_state->src; 1404 plane->state->dst = new_plane_state->dst; 1405 plane->state->visible = new_plane_state->visible; 1406 1407 new_vc4_state = to_vc4_plane_state(new_plane_state); 1408 vc4_state = to_vc4_plane_state(plane->state); 1409 1410 vc4_state->crtc_x = new_vc4_state->crtc_x; 1411 vc4_state->crtc_y = new_vc4_state->crtc_y; 1412 vc4_state->crtc_h = new_vc4_state->crtc_h; 1413 vc4_state->crtc_w = new_vc4_state->crtc_w; 1414 vc4_state->src_x = new_vc4_state->src_x; 1415 vc4_state->src_y = new_vc4_state->src_y; 1416 memcpy(vc4_state->src_w, new_vc4_state->src_w, 1417 sizeof(vc4_state->src_w)); 1418 memcpy(vc4_state->src_h, new_vc4_state->src_h, 1419 sizeof(vc4_state->src_h)); 1420 memcpy(vc4_state->x_scaling, new_vc4_state->x_scaling, 1421 sizeof(vc4_state->x_scaling)); 1422 memcpy(vc4_state->y_scaling, new_vc4_state->y_scaling, 1423 sizeof(vc4_state->y_scaling)); 1424 vc4_state->is_unity = new_vc4_state->is_unity; 1425 vc4_state->is_yuv = new_vc4_state->is_yuv; 1426 memcpy(vc4_state->offsets, new_vc4_state->offsets, 1427 sizeof(vc4_state->offsets)); 1428 vc4_state->needs_bg_fill = new_vc4_state->needs_bg_fill; 1429 1430 /* Update the current vc4_state pos0, pos2 and ptr0 dlist entries. */ 1431 vc4_state->dlist[vc4_state->pos0_offset] = 1432 new_vc4_state->dlist[vc4_state->pos0_offset]; 1433 vc4_state->dlist[vc4_state->pos2_offset] = 1434 new_vc4_state->dlist[vc4_state->pos2_offset]; 1435 vc4_state->dlist[vc4_state->ptr0_offset] = 1436 new_vc4_state->dlist[vc4_state->ptr0_offset]; 1437 1438 /* Note that we can't just call vc4_plane_write_dlist() 1439 * because that would smash the context data that the HVS is 1440 * currently using. 1441 */ 1442 writel(vc4_state->dlist[vc4_state->pos0_offset], 1443 &vc4_state->hw_dlist[vc4_state->pos0_offset]); 1444 writel(vc4_state->dlist[vc4_state->pos2_offset], 1445 &vc4_state->hw_dlist[vc4_state->pos2_offset]); 1446 writel(vc4_state->dlist[vc4_state->ptr0_offset], 1447 &vc4_state->hw_dlist[vc4_state->ptr0_offset]); 1448 1449 drm_dev_exit(idx); 1450 } 1451 1452 static int vc4_plane_atomic_async_check(struct drm_plane *plane, 1453 struct drm_atomic_state *state) 1454 { 1455 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, 1456 plane); 1457 struct vc4_plane_state *old_vc4_state, *new_vc4_state; 1458 int ret; 1459 u32 i; 1460 1461 ret = vc4_plane_mode_set(plane, new_plane_state); 1462 if (ret) 1463 return ret; 1464 1465 old_vc4_state = to_vc4_plane_state(plane->state); 1466 new_vc4_state = to_vc4_plane_state(new_plane_state); 1467 1468 if (!new_vc4_state->hw_dlist) 1469 return -EINVAL; 1470 1471 if (old_vc4_state->dlist_count != new_vc4_state->dlist_count || 1472 old_vc4_state->pos0_offset != new_vc4_state->pos0_offset || 1473 old_vc4_state->pos2_offset != new_vc4_state->pos2_offset || 1474 old_vc4_state->ptr0_offset != new_vc4_state->ptr0_offset || 1475 vc4_lbm_size(plane->state) != vc4_lbm_size(new_plane_state)) 1476 return -EINVAL; 1477 1478 /* Only pos0, pos2 and ptr0 DWORDS can be updated in an async update 1479 * if anything else has changed, fallback to a sync update. 1480 */ 1481 for (i = 0; i < new_vc4_state->dlist_count; i++) { 1482 if (i == new_vc4_state->pos0_offset || 1483 i == new_vc4_state->pos2_offset || 1484 i == new_vc4_state->ptr0_offset || 1485 (new_vc4_state->lbm_offset && 1486 i == new_vc4_state->lbm_offset)) 1487 continue; 1488 1489 if (new_vc4_state->dlist[i] != old_vc4_state->dlist[i]) 1490 return -EINVAL; 1491 } 1492 1493 return 0; 1494 } 1495 1496 static int vc4_prepare_fb(struct drm_plane *plane, 1497 struct drm_plane_state *state) 1498 { 1499 struct vc4_bo *bo; 1500 int ret; 1501 1502 if (!state->fb) 1503 return 0; 1504 1505 bo = to_vc4_bo(&drm_fb_dma_get_gem_obj(state->fb, 0)->base); 1506 1507 ret = drm_gem_plane_helper_prepare_fb(plane, state); 1508 if (ret) 1509 return ret; 1510 1511 return vc4_bo_inc_usecnt(bo); 1512 } 1513 1514 static void vc4_cleanup_fb(struct drm_plane *plane, 1515 struct drm_plane_state *state) 1516 { 1517 struct vc4_bo *bo; 1518 1519 if (!state->fb) 1520 return; 1521 1522 bo = to_vc4_bo(&drm_fb_dma_get_gem_obj(state->fb, 0)->base); 1523 vc4_bo_dec_usecnt(bo); 1524 } 1525 1526 static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = { 1527 .atomic_check = vc4_plane_atomic_check, 1528 .atomic_update = vc4_plane_atomic_update, 1529 .prepare_fb = vc4_prepare_fb, 1530 .cleanup_fb = vc4_cleanup_fb, 1531 .atomic_async_check = vc4_plane_atomic_async_check, 1532 .atomic_async_update = vc4_plane_atomic_async_update, 1533 }; 1534 1535 static const struct drm_plane_helper_funcs vc5_plane_helper_funcs = { 1536 .atomic_check = vc4_plane_atomic_check, 1537 .atomic_update = vc4_plane_atomic_update, 1538 .atomic_async_check = vc4_plane_atomic_async_check, 1539 .atomic_async_update = vc4_plane_atomic_async_update, 1540 }; 1541 1542 static bool vc4_format_mod_supported(struct drm_plane *plane, 1543 uint32_t format, 1544 uint64_t modifier) 1545 { 1546 /* Support T_TILING for RGB formats only. */ 1547 switch (format) { 1548 case DRM_FORMAT_XRGB8888: 1549 case DRM_FORMAT_ARGB8888: 1550 case DRM_FORMAT_ABGR8888: 1551 case DRM_FORMAT_XBGR8888: 1552 case DRM_FORMAT_RGB565: 1553 case DRM_FORMAT_BGR565: 1554 case DRM_FORMAT_ARGB1555: 1555 case DRM_FORMAT_XRGB1555: 1556 switch (fourcc_mod_broadcom_mod(modifier)) { 1557 case DRM_FORMAT_MOD_LINEAR: 1558 case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: 1559 return true; 1560 default: 1561 return false; 1562 } 1563 case DRM_FORMAT_NV12: 1564 case DRM_FORMAT_NV21: 1565 switch (fourcc_mod_broadcom_mod(modifier)) { 1566 case DRM_FORMAT_MOD_LINEAR: 1567 case DRM_FORMAT_MOD_BROADCOM_SAND64: 1568 case DRM_FORMAT_MOD_BROADCOM_SAND128: 1569 case DRM_FORMAT_MOD_BROADCOM_SAND256: 1570 return true; 1571 default: 1572 return false; 1573 } 1574 case DRM_FORMAT_P030: 1575 switch (fourcc_mod_broadcom_mod(modifier)) { 1576 case DRM_FORMAT_MOD_BROADCOM_SAND128: 1577 return true; 1578 default: 1579 return false; 1580 } 1581 case DRM_FORMAT_RGBX1010102: 1582 case DRM_FORMAT_BGRX1010102: 1583 case DRM_FORMAT_RGBA1010102: 1584 case DRM_FORMAT_BGRA1010102: 1585 case DRM_FORMAT_XRGB4444: 1586 case DRM_FORMAT_ARGB4444: 1587 case DRM_FORMAT_XBGR4444: 1588 case DRM_FORMAT_ABGR4444: 1589 case DRM_FORMAT_RGBX4444: 1590 case DRM_FORMAT_RGBA4444: 1591 case DRM_FORMAT_BGRX4444: 1592 case DRM_FORMAT_BGRA4444: 1593 case DRM_FORMAT_RGB332: 1594 case DRM_FORMAT_BGR233: 1595 case DRM_FORMAT_YUV422: 1596 case DRM_FORMAT_YVU422: 1597 case DRM_FORMAT_YUV420: 1598 case DRM_FORMAT_YVU420: 1599 case DRM_FORMAT_NV16: 1600 case DRM_FORMAT_NV61: 1601 default: 1602 return (modifier == DRM_FORMAT_MOD_LINEAR); 1603 } 1604 } 1605 1606 static const struct drm_plane_funcs vc4_plane_funcs = { 1607 .update_plane = drm_atomic_helper_update_plane, 1608 .disable_plane = drm_atomic_helper_disable_plane, 1609 .reset = vc4_plane_reset, 1610 .atomic_duplicate_state = vc4_plane_duplicate_state, 1611 .atomic_destroy_state = vc4_plane_destroy_state, 1612 .format_mod_supported = vc4_format_mod_supported, 1613 }; 1614 1615 struct drm_plane *vc4_plane_init(struct drm_device *dev, 1616 enum drm_plane_type type, 1617 uint32_t possible_crtcs) 1618 { 1619 struct vc4_dev *vc4 = to_vc4_dev(dev); 1620 struct drm_plane *plane; 1621 struct vc4_plane *vc4_plane; 1622 u32 formats[ARRAY_SIZE(hvs_formats)]; 1623 int num_formats = 0; 1624 unsigned i; 1625 static const uint64_t modifiers[] = { 1626 DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED, 1627 DRM_FORMAT_MOD_BROADCOM_SAND128, 1628 DRM_FORMAT_MOD_BROADCOM_SAND64, 1629 DRM_FORMAT_MOD_BROADCOM_SAND256, 1630 DRM_FORMAT_MOD_LINEAR, 1631 DRM_FORMAT_MOD_INVALID 1632 }; 1633 1634 for (i = 0; i < ARRAY_SIZE(hvs_formats); i++) { 1635 if (!hvs_formats[i].hvs5_only || vc4->is_vc5) { 1636 formats[num_formats] = hvs_formats[i].drm; 1637 num_formats++; 1638 } 1639 } 1640 1641 vc4_plane = drmm_universal_plane_alloc(dev, struct vc4_plane, base, 1642 possible_crtcs, 1643 &vc4_plane_funcs, 1644 formats, num_formats, 1645 modifiers, type, NULL); 1646 if (IS_ERR(vc4_plane)) 1647 return ERR_CAST(vc4_plane); 1648 plane = &vc4_plane->base; 1649 1650 if (vc4->is_vc5) 1651 drm_plane_helper_add(plane, &vc5_plane_helper_funcs); 1652 else 1653 drm_plane_helper_add(plane, &vc4_plane_helper_funcs); 1654 1655 drm_plane_create_alpha_property(plane); 1656 drm_plane_create_blend_mode_property(plane, 1657 BIT(DRM_MODE_BLEND_PIXEL_NONE) | 1658 BIT(DRM_MODE_BLEND_PREMULTI) | 1659 BIT(DRM_MODE_BLEND_COVERAGE)); 1660 drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0, 1661 DRM_MODE_ROTATE_0 | 1662 DRM_MODE_ROTATE_180 | 1663 DRM_MODE_REFLECT_X | 1664 DRM_MODE_REFLECT_Y); 1665 1666 drm_plane_create_color_properties(plane, 1667 BIT(DRM_COLOR_YCBCR_BT601) | 1668 BIT(DRM_COLOR_YCBCR_BT709) | 1669 BIT(DRM_COLOR_YCBCR_BT2020), 1670 BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) | 1671 BIT(DRM_COLOR_YCBCR_FULL_RANGE), 1672 DRM_COLOR_YCBCR_BT709, 1673 DRM_COLOR_YCBCR_LIMITED_RANGE); 1674 1675 if (type == DRM_PLANE_TYPE_PRIMARY) 1676 drm_plane_create_zpos_immutable_property(plane, 0); 1677 1678 return plane; 1679 } 1680 1681 #define VC4_NUM_OVERLAY_PLANES 16 1682 1683 int vc4_plane_create_additional_planes(struct drm_device *drm) 1684 { 1685 struct drm_plane *cursor_plane; 1686 struct drm_crtc *crtc; 1687 unsigned int i; 1688 1689 /* Set up some arbitrary number of planes. We're not limited 1690 * by a set number of physical registers, just the space in 1691 * the HVS (16k) and how small an plane can be (28 bytes). 1692 * However, each plane we set up takes up some memory, and 1693 * increases the cost of looping over planes, which atomic 1694 * modesetting does quite a bit. As a result, we pick a 1695 * modest number of planes to expose, that should hopefully 1696 * still cover any sane usecase. 1697 */ 1698 for (i = 0; i < VC4_NUM_OVERLAY_PLANES; i++) { 1699 struct drm_plane *plane = 1700 vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY, 1701 GENMASK(drm->mode_config.num_crtc - 1, 0)); 1702 1703 if (IS_ERR(plane)) 1704 continue; 1705 1706 /* Create zpos property. Max of all the overlays + 1 primary + 1707 * 1 cursor plane on a crtc. 1708 */ 1709 drm_plane_create_zpos_property(plane, i + 1, 1, 1710 VC4_NUM_OVERLAY_PLANES + 1); 1711 } 1712 1713 drm_for_each_crtc(crtc, drm) { 1714 /* Set up the legacy cursor after overlay initialization, 1715 * since the zpos fallback is that planes are rendered by plane 1716 * ID order, and that then puts the cursor on top. 1717 */ 1718 cursor_plane = vc4_plane_init(drm, DRM_PLANE_TYPE_CURSOR, 1719 drm_crtc_mask(crtc)); 1720 if (!IS_ERR(cursor_plane)) { 1721 crtc->cursor = cursor_plane; 1722 1723 drm_plane_create_zpos_property(cursor_plane, 1724 VC4_NUM_OVERLAY_PLANES + 1, 1725 1, 1726 VC4_NUM_OVERLAY_PLANES + 1); 1727 } 1728 } 1729 1730 return 0; 1731 } 1732