drivers/gpu/drm/imx/ipuv3-plane.c

   1 /*
   2  * i.MX IPUv3 DP Overlay Planes
   3  *
   4  * Copyright (C) 2013 Philipp Zabel, Pengutronix
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <drm/drmP.h>
  17 #include <drm/drm_atomic.h>
  18 #include <drm/drm_atomic_helper.h>
  19 #include <drm/drm_fb_cma_helper.h>
  20 #include <drm/drm_gem_cma_helper.h>
  21 #include <drm/drm_gem_framebuffer_helper.h>
  22 #include <drm/drm_plane_helper.h>
  23
  24 #include "video/imx-ipu-v3.h"
  25 #include "imx-drm.h"
  26 #include "ipuv3-plane.h"
  27
  28 struct ipu_plane_state {
  29         struct drm_plane_state base;
  30         bool use_pre;
  31 };
  32
  33 static inline struct ipu_plane_state *
  34 to_ipu_plane_state(struct drm_plane_state *p)
  35 {
  36         return container_of(p, struct ipu_plane_state, base);
  37 }
  38
  39 static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
  40 {
  41         return container_of(p, struct ipu_plane, base);
  42 }
  43
  44 static const uint32_t ipu_plane_formats[] = {
  45         DRM_FORMAT_ARGB1555,
  46         DRM_FORMAT_XRGB1555,
  47         DRM_FORMAT_ABGR1555,
  48         DRM_FORMAT_XBGR1555,
  49         DRM_FORMAT_RGBA5551,
  50         DRM_FORMAT_BGRA5551,
  51         DRM_FORMAT_ARGB4444,
  52         DRM_FORMAT_ARGB8888,
  53         DRM_FORMAT_XRGB8888,
  54         DRM_FORMAT_ABGR8888,
  55         DRM_FORMAT_XBGR8888,
  56         DRM_FORMAT_RGBA8888,
  57         DRM_FORMAT_RGBX8888,
  58         DRM_FORMAT_BGRA8888,
  59         DRM_FORMAT_BGRX8888,
  60         DRM_FORMAT_UYVY,
  61         DRM_FORMAT_VYUY,
  62         DRM_FORMAT_YUYV,
  63         DRM_FORMAT_YVYU,
  64         DRM_FORMAT_YUV420,
  65         DRM_FORMAT_YVU420,
  66         DRM_FORMAT_YUV422,
  67         DRM_FORMAT_YVU422,
  68         DRM_FORMAT_YUV444,
  69         DRM_FORMAT_YVU444,
  70         DRM_FORMAT_NV12,
  71         DRM_FORMAT_NV16,
  72         DRM_FORMAT_RGB565,
  73         DRM_FORMAT_RGB565_A8,
  74         DRM_FORMAT_BGR565_A8,
  75         DRM_FORMAT_RGB888_A8,
  76         DRM_FORMAT_BGR888_A8,
  77         DRM_FORMAT_RGBX8888_A8,
  78         DRM_FORMAT_BGRX8888_A8,
  79 };
  80
  81 static const uint64_t ipu_format_modifiers[] = {
  82         DRM_FORMAT_MOD_LINEAR,
  83         DRM_FORMAT_MOD_INVALID
  84 };
  85
  86 static const uint64_t pre_format_modifiers[] = {
  87         DRM_FORMAT_MOD_LINEAR,
  88         DRM_FORMAT_MOD_VIVANTE_TILED,
  89         DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
  90         DRM_FORMAT_MOD_INVALID
  91 };
  92
  93 int ipu_plane_irq(struct ipu_plane *ipu_plane)
  94 {
  95         return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
  96                                      IPU_IRQ_EOF);
  97 }
  98
  99 static inline unsigned long
 100 drm_plane_state_to_eba(struct drm_plane_state *state, int plane)
 101 {
 102         struct drm_framebuffer *fb = state->fb;
 103         struct drm_gem_cma_object *cma_obj;
 104         int x = state->src.x1 >> 16;
 105         int y = state->src.y1 >> 16;
 106
 107         cma_obj = drm_fb_cma_get_gem_obj(fb, plane);
 108         BUG_ON(!cma_obj);
 109
 110         return cma_obj->paddr + fb->offsets[plane] + fb->pitches[plane] * y +
 111                fb->format->cpp[plane] * x;
 112 }
 113
 114 static inline unsigned long
 115 drm_plane_state_to_ubo(struct drm_plane_state *state)
 116 {
 117         struct drm_framebuffer *fb = state->fb;
 118         struct drm_gem_cma_object *cma_obj;
 119         unsigned long eba = drm_plane_state_to_eba(state, 0);
 120         int x = state->src.x1 >> 16;
 121         int y = state->src.y1 >> 16;
 122
 123         cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
 124         BUG_ON(!cma_obj);
 125
 126         x /= drm_format_horz_chroma_subsampling(fb->format->format);
 127         y /= drm_format_vert_chroma_subsampling(fb->format->format);
 128
 129         return cma_obj->paddr + fb->offsets[1] + fb->pitches[1] * y +
 130                fb->format->cpp[1] * x - eba;
 131 }
 132
 133 static inline unsigned long
 134 drm_plane_state_to_vbo(struct drm_plane_state *state)
 135 {
 136         struct drm_framebuffer *fb = state->fb;
 137         struct drm_gem_cma_object *cma_obj;
 138         unsigned long eba = drm_plane_state_to_eba(state, 0);
 139         int x = state->src.x1 >> 16;
 140         int y = state->src.y1 >> 16;
 141
 142         cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
 143         BUG_ON(!cma_obj);
 144
 145         x /= drm_format_horz_chroma_subsampling(fb->format->format);
 146         y /= drm_format_vert_chroma_subsampling(fb->format->format);
 147
 148         return cma_obj->paddr + fb->offsets[2] + fb->pitches[2] * y +
 149                fb->format->cpp[2] * x - eba;
 150 }
 151
 152 void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
 153 {
 154         if (!IS_ERR_OR_NULL(ipu_plane->dp))
 155                 ipu_dp_put(ipu_plane->dp);
 156         if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
 157                 ipu_dmfc_put(ipu_plane->dmfc);
 158         if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
 159                 ipu_idmac_put(ipu_plane->ipu_ch);
 160         if (!IS_ERR_OR_NULL(ipu_plane->alpha_ch))
 161                 ipu_idmac_put(ipu_plane->alpha_ch);
 162 }
 163
 164 int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
 165 {
 166         int ret;
 167         int alpha_ch;
 168
 169         ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
 170         if (IS_ERR(ipu_plane->ipu_ch)) {
 171                 ret = PTR_ERR(ipu_plane->ipu_ch);
 172                 DRM_ERROR("failed to get idmac channel: %d\n", ret);
 173                 return ret;
 174         }
 175
 176         alpha_ch = ipu_channel_alpha_channel(ipu_plane->dma);
 177         if (alpha_ch >= 0) {
 178                 ipu_plane->alpha_ch = ipu_idmac_get(ipu_plane->ipu, alpha_ch);
 179                 if (IS_ERR(ipu_plane->alpha_ch)) {
 180                         ret = PTR_ERR(ipu_plane->alpha_ch);
 181                         DRM_ERROR("failed to get alpha idmac channel %d: %d\n",
 182                                   alpha_ch, ret);
 183                         return ret;
 184                 }
 185         }
 186
 187         ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
 188         if (IS_ERR(ipu_plane->dmfc)) {
 189                 ret = PTR_ERR(ipu_plane->dmfc);
 190                 DRM_ERROR("failed to get dmfc: ret %d\n", ret);
 191                 goto err_out;
 192         }
 193
 194         if (ipu_plane->dp_flow >= 0) {
 195                 ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
 196                 if (IS_ERR(ipu_plane->dp)) {
 197                         ret = PTR_ERR(ipu_plane->dp);
 198                         DRM_ERROR("failed to get dp flow: %d\n", ret);
 199                         goto err_out;
 200                 }
 201         }
 202
 203         return 0;
 204 err_out:
 205         ipu_plane_put_resources(ipu_plane);
 206
 207         return ret;
 208 }
 209
 210 static bool ipu_plane_separate_alpha(struct ipu_plane *ipu_plane)
 211 {
 212         switch (ipu_plane->base.state->fb->format->format) {
 213         case DRM_FORMAT_RGB565_A8:
 214         case DRM_FORMAT_BGR565_A8:
 215         case DRM_FORMAT_RGB888_A8:
 216         case DRM_FORMAT_BGR888_A8:
 217         case DRM_FORMAT_RGBX8888_A8:
 218         case DRM_FORMAT_BGRX8888_A8:
 219                 return true;
 220         default:
 221                 return false;
 222         }
 223 }
 224
 225 static void ipu_plane_enable(struct ipu_plane *ipu_plane)
 226 {
 227         if (ipu_plane->dp)
 228                 ipu_dp_enable(ipu_plane->ipu);
 229         ipu_dmfc_enable_channel(ipu_plane->dmfc);
 230         ipu_idmac_enable_channel(ipu_plane->ipu_ch);
 231         if (ipu_plane_separate_alpha(ipu_plane))
 232                 ipu_idmac_enable_channel(ipu_plane->alpha_ch);
 233         if (ipu_plane->dp)
 234                 ipu_dp_enable_channel(ipu_plane->dp);
 235 }
 236
 237 void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel)
 238 {
 239         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 240
 241         ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
 242
 243         if (ipu_plane->dp && disable_dp_channel)
 244                 ipu_dp_disable_channel(ipu_plane->dp, false);
 245         ipu_idmac_disable_channel(ipu_plane->ipu_ch);
 246         if (ipu_plane->alpha_ch)
 247                 ipu_idmac_disable_channel(ipu_plane->alpha_ch);
 248         ipu_dmfc_disable_channel(ipu_plane->dmfc);
 249         if (ipu_plane->dp)
 250                 ipu_dp_disable(ipu_plane->ipu);
 251         if (ipu_prg_present(ipu_plane->ipu))
 252                 ipu_prg_channel_disable(ipu_plane->ipu_ch);
 253 }
 254
 255 void ipu_plane_disable_deferred(struct drm_plane *plane)
 256 {
 257         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 258
 259         if (ipu_plane->disabling) {
 260                 ipu_plane->disabling = false;
 261                 ipu_plane_disable(ipu_plane, false);
 262         }
 263 }
 264 EXPORT_SYMBOL_GPL(ipu_plane_disable_deferred);
 265
 266 static void ipu_plane_destroy(struct drm_plane *plane)
 267 {
 268         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 269
 270         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 271
 272         drm_plane_cleanup(plane);
 273         kfree(ipu_plane);
 274 }
 275
 276 static void ipu_plane_state_reset(struct drm_plane *plane)
 277 {
 278         struct ipu_plane_state *ipu_state;
 279
 280         if (plane->state) {
 281                 ipu_state = to_ipu_plane_state(plane->state);
 282                 __drm_atomic_helper_plane_destroy_state(plane->state);
 283                 kfree(ipu_state);
 284                 plane->state = NULL;
 285         }
 286
 287         ipu_state = kzalloc(sizeof(*ipu_state), GFP_KERNEL);
 288
 289         if (ipu_state)
 290                 __drm_atomic_helper_plane_reset(plane, &ipu_state->base);
 291 }
 292
 293 static struct drm_plane_state *
 294 ipu_plane_duplicate_state(struct drm_plane *plane)
 295 {
 296         struct ipu_plane_state *state;
 297
 298         if (WARN_ON(!plane->state))
 299                 return NULL;
 300
 301         state = kmalloc(sizeof(*state), GFP_KERNEL);
 302         if (state)
 303                 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
 304
 305         return &state->base;
 306 }
 307
 308 static void ipu_plane_destroy_state(struct drm_plane *plane,
 309                                     struct drm_plane_state *state)
 310 {
 311         struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
 312
 313         __drm_atomic_helper_plane_destroy_state(state);
 314         kfree(ipu_state);
 315 }
 316
 317 static bool ipu_plane_format_mod_supported(struct drm_plane *plane,
 318                                            uint32_t format, uint64_t modifier)
 319 {
 320         struct ipu_soc *ipu = to_ipu_plane(plane)->ipu;
 321
 322         /* linear is supported for all planes and formats */
 323         if (modifier == DRM_FORMAT_MOD_LINEAR)
 324                 return true;
 325
 326         /* without a PRG there are no supported modifiers */
 327         if (!ipu_prg_present(ipu))
 328                 return false;
 329
 330         return ipu_prg_format_supported(ipu, format, modifier);
 331 }
 332
 333 static const struct drm_plane_funcs ipu_plane_funcs = {
 334         .update_plane   = drm_atomic_helper_update_plane,
 335         .disable_plane  = drm_atomic_helper_disable_plane,
 336         .destroy        = ipu_plane_destroy,
 337         .reset          = ipu_plane_state_reset,
 338         .atomic_duplicate_state = ipu_plane_duplicate_state,
 339         .atomic_destroy_state   = ipu_plane_destroy_state,
 340         .format_mod_supported = ipu_plane_format_mod_supported,
 341 };
 342
 343 static int ipu_plane_atomic_check(struct drm_plane *plane,
 344                                   struct drm_plane_state *state)
 345 {
 346         struct drm_plane_state *old_state = plane->state;
 347         struct drm_crtc_state *crtc_state;
 348         struct device *dev = plane->dev->dev;
 349         struct drm_framebuffer *fb = state->fb;
 350         struct drm_framebuffer *old_fb = old_state->fb;
 351         unsigned long eba, ubo, vbo, old_ubo, old_vbo, alpha_eba;
 352         bool can_position = (plane->type == DRM_PLANE_TYPE_OVERLAY);
 353         int hsub, vsub;
 354         int ret;
 355
 356         /* Ok to disable */
 357         if (!fb)
 358                 return 0;
 359
 360         if (!state->crtc)
 361                 return -EINVAL;
 362
 363         crtc_state =
 364                 drm_atomic_get_existing_crtc_state(state->state, state->crtc);
 365         if (WARN_ON(!crtc_state))
 366                 return -EINVAL;
 367
 368         ret = drm_atomic_helper_check_plane_state(state, crtc_state,
 369                                                   DRM_PLANE_HELPER_NO_SCALING,
 370                                                   DRM_PLANE_HELPER_NO_SCALING,
 371                                                   can_position, true);
 372         if (ret)
 373                 return ret;
 374
 375         /* CRTC should be enabled */
 376         if (!crtc_state->enable)
 377                 return -EINVAL;
 378
 379         switch (plane->type) {
 380         case DRM_PLANE_TYPE_PRIMARY:
 381                 /* full plane minimum width is 13 pixels */
 382                 if (drm_rect_width(&state->dst) < 13)
 383                         return -EINVAL;
 384                 break;
 385         case DRM_PLANE_TYPE_OVERLAY:
 386                 break;
 387         default:
 388                 dev_warn(dev, "Unsupported plane type %d\n", plane->type);
 389                 return -EINVAL;
 390         }
 391
 392         if (drm_rect_height(&state->dst) < 2)
 393                 return -EINVAL;
 394
 395         /*
 396          * We support resizing active plane or changing its format by
 397          * forcing CRTC mode change in plane's ->atomic_check callback
 398          * and disabling all affected active planes in CRTC's ->atomic_disable
 399          * callback.  The planes will be reenabled in plane's ->atomic_update
 400          * callback.
 401          */
 402         if (old_fb &&
 403             (drm_rect_width(&state->dst) != drm_rect_width(&old_state->dst) ||
 404              drm_rect_height(&state->dst) != drm_rect_height(&old_state->dst) ||
 405              fb->format != old_fb->format))
 406                 crtc_state->mode_changed = true;
 407
 408         eba = drm_plane_state_to_eba(state, 0);
 409
 410         if (eba & 0x7)
 411                 return -EINVAL;
 412
 413         if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
 414                 return -EINVAL;
 415
 416         if (old_fb && fb->pitches[0] != old_fb->pitches[0])
 417                 crtc_state->mode_changed = true;
 418
 419         switch (fb->format->format) {
 420         case DRM_FORMAT_YUV420:
 421         case DRM_FORMAT_YVU420:
 422         case DRM_FORMAT_YUV422:
 423         case DRM_FORMAT_YVU422:
 424         case DRM_FORMAT_YUV444:
 425         case DRM_FORMAT_YVU444:
 426                 /*
 427                  * Multiplanar formats have to meet the following restrictions:
 428                  * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
 429                  * - EBA, UBO and VBO are a multiple of 8
 430                  * - UBO and VBO are unsigned and not larger than 0xfffff8
 431                  * - Only EBA may be changed while scanout is active
 432                  * - The strides of U and V planes must be identical.
 433                  */
 434                 vbo = drm_plane_state_to_vbo(state);
 435
 436                 if (vbo & 0x7 || vbo > 0xfffff8)
 437                         return -EINVAL;
 438
 439                 if (old_fb && (fb->format == old_fb->format)) {
 440                         old_vbo = drm_plane_state_to_vbo(old_state);
 441                         if (vbo != old_vbo)
 442                                 crtc_state->mode_changed = true;
 443                 }
 444
 445                 if (fb->pitches[1] != fb->pitches[2])
 446                         return -EINVAL;
 447
 448                 /* fall-through */
 449         case DRM_FORMAT_NV12:
 450         case DRM_FORMAT_NV16:
 451                 ubo = drm_plane_state_to_ubo(state);
 452
 453                 if (ubo & 0x7 || ubo > 0xfffff8)
 454                         return -EINVAL;
 455
 456                 if (old_fb && (fb->format == old_fb->format)) {
 457                         old_ubo = drm_plane_state_to_ubo(old_state);
 458                         if (ubo != old_ubo)
 459                                 crtc_state->mode_changed = true;
 460                 }
 461
 462                 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
 463                         return -EINVAL;
 464
 465                 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
 466                         crtc_state->mode_changed = true;
 467
 468                 /*
 469                  * The x/y offsets must be even in case of horizontal/vertical
 470                  * chroma subsampling.
 471                  */
 472                 hsub = drm_format_horz_chroma_subsampling(fb->format->format);
 473                 vsub = drm_format_vert_chroma_subsampling(fb->format->format);
 474                 if (((state->src.x1 >> 16) & (hsub - 1)) ||
 475                     ((state->src.y1 >> 16) & (vsub - 1)))
 476                         return -EINVAL;
 477                 break;
 478         case DRM_FORMAT_RGB565_A8:
 479         case DRM_FORMAT_BGR565_A8:
 480         case DRM_FORMAT_RGB888_A8:
 481         case DRM_FORMAT_BGR888_A8:
 482         case DRM_FORMAT_RGBX8888_A8:
 483         case DRM_FORMAT_BGRX8888_A8:
 484                 alpha_eba = drm_plane_state_to_eba(state, 1);
 485                 if (alpha_eba & 0x7)
 486                         return -EINVAL;
 487
 488                 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
 489                         return -EINVAL;
 490
 491                 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
 492                         crtc_state->mode_changed = true;
 493                 break;
 494         }
 495
 496         return 0;
 497 }
 498
 499 static void ipu_plane_atomic_disable(struct drm_plane *plane,
 500                                      struct drm_plane_state *old_state)
 501 {
 502         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 503
 504         if (ipu_plane->dp)
 505                 ipu_dp_disable_channel(ipu_plane->dp, true);
 506         ipu_plane->disabling = true;
 507 }
 508
 509 static int ipu_chan_assign_axi_id(int ipu_chan)
 510 {
 511         switch (ipu_chan) {
 512         case IPUV3_CHANNEL_MEM_BG_SYNC:
 513                 return 1;
 514         case IPUV3_CHANNEL_MEM_FG_SYNC:
 515                 return 2;
 516         case IPUV3_CHANNEL_MEM_DC_SYNC:
 517                 return 3;
 518         default:
 519                 return 0;
 520         }
 521 }
 522
 523 static void ipu_calculate_bursts(u32 width, u32 cpp, u32 stride,
 524                                  u8 *burstsize, u8 *num_bursts)
 525 {
 526         const unsigned int width_bytes = width * cpp;
 527         unsigned int npb, bursts;
 528
 529         /* Maximum number of pixels per burst without overshooting stride */
 530         for (npb = 64 / cpp; npb > 0; --npb) {
 531                 if (round_up(width_bytes, npb * cpp) <= stride)
 532                         break;
 533         }
 534         *burstsize = npb;
 535
 536         /* Maximum number of consecutive bursts without overshooting stride */
 537         for (bursts = 8; bursts > 1; bursts /= 2) {
 538                 if (round_up(width_bytes, npb * cpp * bursts) <= stride)
 539                         break;
 540         }
 541         *num_bursts = bursts;
 542 }
 543
 544 static void ipu_plane_atomic_update(struct drm_plane *plane,
 545                                     struct drm_plane_state *old_state)
 546 {
 547         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 548         struct drm_plane_state *state = plane->state;
 549         struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
 550         struct drm_crtc_state *crtc_state = state->crtc->state;
 551         struct drm_framebuffer *fb = state->fb;
 552         struct drm_rect *dst = &state->dst;
 553         unsigned long eba, ubo, vbo;
 554         unsigned long alpha_eba = 0;
 555         enum ipu_color_space ics;
 556         unsigned int axi_id = 0;
 557         const struct drm_format_info *info;
 558         u8 burstsize, num_bursts;
 559         u32 width, height;
 560         int active;
 561
 562         if (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_FG)
 563                 ipu_dp_set_window_pos(ipu_plane->dp, dst->x1, dst->y1);
 564
 565         eba = drm_plane_state_to_eba(state, 0);
 566
 567         /*
 568          * Configure PRG channel and attached PRE, this changes the EBA to an
 569          * internal SRAM location.
 570          */
 571         if (ipu_state->use_pre) {
 572                 axi_id = ipu_chan_assign_axi_id(ipu_plane->dma);
 573                 ipu_prg_channel_configure(ipu_plane->ipu_ch, axi_id,
 574                                           drm_rect_width(&state->src) >> 16,
 575                                           drm_rect_height(&state->src) >> 16,
 576                                           fb->pitches[0], fb->format->format,
 577                                           fb->modifier, &eba);
 578         }
 579
 580         if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state)) {
 581                 /* nothing to do if PRE is used */
 582                 if (ipu_state->use_pre)
 583                         return;
 584                 active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
 585                 ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
 586                 ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
 587                 if (ipu_plane_separate_alpha(ipu_plane)) {
 588                         active = ipu_idmac_get_current_buffer(ipu_plane->alpha_ch);
 589                         ipu_cpmem_set_buffer(ipu_plane->alpha_ch, !active,
 590                                              alpha_eba);
 591                         ipu_idmac_select_buffer(ipu_plane->alpha_ch, !active);
 592                 }
 593                 return;
 594         }
 595
 596         ics = ipu_drm_fourcc_to_colorspace(fb->format->format);
 597         switch (ipu_plane->dp_flow) {
 598         case IPU_DP_FLOW_SYNC_BG:
 599                 ipu_dp_setup_channel(ipu_plane->dp, ics, IPUV3_COLORSPACE_RGB);
 600                 ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 601                 break;
 602         case IPU_DP_FLOW_SYNC_FG:
 603                 ipu_dp_setup_channel(ipu_plane->dp, ics,
 604                                         IPUV3_COLORSPACE_UNKNOWN);
 605                 /* Enable local alpha on partial plane */
 606                 switch (fb->format->format) {
 607                 case DRM_FORMAT_ARGB1555:
 608                 case DRM_FORMAT_ABGR1555:
 609                 case DRM_FORMAT_RGBA5551:
 610                 case DRM_FORMAT_BGRA5551:
 611                 case DRM_FORMAT_ARGB4444:
 612                 case DRM_FORMAT_ARGB8888:
 613                 case DRM_FORMAT_ABGR8888:
 614                 case DRM_FORMAT_RGBA8888:
 615                 case DRM_FORMAT_BGRA8888:
 616                 case DRM_FORMAT_RGB565_A8:
 617                 case DRM_FORMAT_BGR565_A8:
 618                 case DRM_FORMAT_RGB888_A8:
 619                 case DRM_FORMAT_BGR888_A8:
 620                 case DRM_FORMAT_RGBX8888_A8:
 621                 case DRM_FORMAT_BGRX8888_A8:
 622                         ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
 623                         break;
 624                 default:
 625                         ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 626                         break;
 627                 }
 628         }
 629
 630         ipu_dmfc_config_wait4eot(ipu_plane->dmfc, drm_rect_width(dst));
 631
 632         width = drm_rect_width(&state->src) >> 16;
 633         height = drm_rect_height(&state->src) >> 16;
 634         info = drm_format_info(fb->format->format);
 635         ipu_calculate_bursts(width, info->cpp[0], fb->pitches[0],
 636                              &burstsize, &num_bursts);
 637
 638         ipu_cpmem_zero(ipu_plane->ipu_ch);
 639         ipu_cpmem_set_resolution(ipu_plane->ipu_ch, width, height);
 640         ipu_cpmem_set_fmt(ipu_plane->ipu_ch, fb->format->format);
 641         ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, burstsize);
 642         ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
 643         ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
 644         ipu_cpmem_set_stride(ipu_plane->ipu_ch, fb->pitches[0]);
 645         ipu_cpmem_set_axi_id(ipu_plane->ipu_ch, axi_id);
 646
 647         switch (fb->format->format) {
 648         case DRM_FORMAT_YUV420:
 649         case DRM_FORMAT_YVU420:
 650         case DRM_FORMAT_YUV422:
 651         case DRM_FORMAT_YVU422:
 652         case DRM_FORMAT_YUV444:
 653         case DRM_FORMAT_YVU444:
 654                 ubo = drm_plane_state_to_ubo(state);
 655                 vbo = drm_plane_state_to_vbo(state);
 656                 if (fb->format->format == DRM_FORMAT_YVU420 ||
 657                     fb->format->format == DRM_FORMAT_YVU422 ||
 658                     fb->format->format == DRM_FORMAT_YVU444)
 659                         swap(ubo, vbo);
 660
 661                 ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
 662                                               fb->pitches[1], ubo, vbo);
 663
 664                 dev_dbg(ipu_plane->base.dev->dev,
 665                         "phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
 666                         state->src.x1 >> 16, state->src.y1 >> 16);
 667                 break;
 668         case DRM_FORMAT_NV12:
 669         case DRM_FORMAT_NV16:
 670                 ubo = drm_plane_state_to_ubo(state);
 671
 672                 ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
 673                                               fb->pitches[1], ubo, ubo);
 674
 675                 dev_dbg(ipu_plane->base.dev->dev,
 676                         "phy = %lu %lu, x = %d, y = %d", eba, ubo,
 677                         state->src.x1 >> 16, state->src.y1 >> 16);
 678                 break;
 679         case DRM_FORMAT_RGB565_A8:
 680         case DRM_FORMAT_BGR565_A8:
 681         case DRM_FORMAT_RGB888_A8:
 682         case DRM_FORMAT_BGR888_A8:
 683         case DRM_FORMAT_RGBX8888_A8:
 684         case DRM_FORMAT_BGRX8888_A8:
 685                 alpha_eba = drm_plane_state_to_eba(state, 1);
 686                 num_bursts = 0;
 687
 688                 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu %lu, x = %d, y = %d",
 689                         eba, alpha_eba, state->src.x1 >> 16, state->src.y1 >> 16);
 690
 691                 ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, 16);
 692
 693                 ipu_cpmem_zero(ipu_plane->alpha_ch);
 694                 ipu_cpmem_set_resolution(ipu_plane->alpha_ch,
 695                                          drm_rect_width(&state->src) >> 16,
 696                                          drm_rect_height(&state->src) >> 16);
 697                 ipu_cpmem_set_format_passthrough(ipu_plane->alpha_ch, 8);
 698                 ipu_cpmem_set_high_priority(ipu_plane->alpha_ch);
 699                 ipu_idmac_set_double_buffer(ipu_plane->alpha_ch, 1);
 700                 ipu_cpmem_set_stride(ipu_plane->alpha_ch, fb->pitches[1]);
 701                 ipu_cpmem_set_burstsize(ipu_plane->alpha_ch, 16);
 702                 ipu_cpmem_set_buffer(ipu_plane->alpha_ch, 0, alpha_eba);
 703                 ipu_cpmem_set_buffer(ipu_plane->alpha_ch, 1, alpha_eba);
 704                 break;
 705         default:
 706                 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
 707                         eba, state->src.x1 >> 16, state->src.y1 >> 16);
 708                 break;
 709         }
 710         ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
 711         ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
 712         ipu_idmac_lock_enable(ipu_plane->ipu_ch, num_bursts);
 713         ipu_plane_enable(ipu_plane);
 714 }
 715
 716 static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
 717         .prepare_fb = drm_gem_fb_prepare_fb,
 718         .atomic_check = ipu_plane_atomic_check,
 719         .atomic_disable = ipu_plane_atomic_disable,
 720         .atomic_update = ipu_plane_atomic_update,
 721 };
 722
 723 int ipu_planes_assign_pre(struct drm_device *dev,
 724                           struct drm_atomic_state *state)
 725 {
 726         struct drm_crtc_state *old_crtc_state, *crtc_state;
 727         struct drm_plane_state *plane_state;
 728         struct ipu_plane_state *ipu_state;
 729         struct ipu_plane *ipu_plane;
 730         struct drm_plane *plane;
 731         struct drm_crtc *crtc;
 732         int available_pres = ipu_prg_max_active_channels();
 733         int ret, i;
 734
 735         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, crtc_state, i) {
 736                 ret = drm_atomic_add_affected_planes(state, crtc);
 737                 if (ret)
 738                         return ret;
 739         }
 740
 741         /*
 742          * We are going over the planes in 2 passes: first we assign PREs to
 743          * planes with a tiling modifier, which need the PREs to resolve into
 744          * linear. Any failure to assign a PRE there is fatal. In the second
 745          * pass we try to assign PREs to linear FBs, to improve memory access
 746          * patterns for them. Failure at this point is non-fatal, as we can
 747          * scan out linear FBs without a PRE.
 748          */
 749         for_each_new_plane_in_state(state, plane, plane_state, i) {
 750                 ipu_state = to_ipu_plane_state(plane_state);
 751                 ipu_plane = to_ipu_plane(plane);
 752
 753                 if (!plane_state->fb) {
 754                         ipu_state->use_pre = false;
 755                         continue;
 756                 }
 757
 758                 if (!(plane_state->fb->flags & DRM_MODE_FB_MODIFIERS) ||
 759                     plane_state->fb->modifier == DRM_FORMAT_MOD_LINEAR)
 760                         continue;
 761
 762                 if (!ipu_prg_present(ipu_plane->ipu) || !available_pres)
 763                         return -EINVAL;
 764
 765                 if (!ipu_prg_format_supported(ipu_plane->ipu,
 766                                               plane_state->fb->format->format,
 767                                               plane_state->fb->modifier))
 768                         return -EINVAL;
 769
 770                 ipu_state->use_pre = true;
 771                 available_pres--;
 772         }
 773
 774         for_each_new_plane_in_state(state, plane, plane_state, i) {
 775                 ipu_state = to_ipu_plane_state(plane_state);
 776                 ipu_plane = to_ipu_plane(plane);
 777
 778                 if (!plane_state->fb) {
 779                         ipu_state->use_pre = false;
 780                         continue;
 781                 }
 782
 783                 if ((plane_state->fb->flags & DRM_MODE_FB_MODIFIERS) &&
 784                     plane_state->fb->modifier != DRM_FORMAT_MOD_LINEAR)
 785                         continue;
 786
 787                 /* make sure that modifier is initialized */
 788                 plane_state->fb->modifier = DRM_FORMAT_MOD_LINEAR;
 789
 790                 if (ipu_prg_present(ipu_plane->ipu) && available_pres &&
 791                     ipu_prg_format_supported(ipu_plane->ipu,
 792                                              plane_state->fb->format->format,
 793                                              plane_state->fb->modifier)) {
 794                         ipu_state->use_pre = true;
 795                         available_pres--;
 796                 } else {
 797                         ipu_state->use_pre = false;
 798                 }
 799         }
 800
 801         return 0;
 802 }
 803 EXPORT_SYMBOL_GPL(ipu_planes_assign_pre);
 804
 805 struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
 806                                  int dma, int dp, unsigned int possible_crtcs,
 807                                  enum drm_plane_type type)
 808 {
 809         struct ipu_plane *ipu_plane;
 810         const uint64_t *modifiers = ipu_format_modifiers;
 811         int ret;
 812
 813         DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
 814                       dma, dp, possible_crtcs);
 815
 816         ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
 817         if (!ipu_plane) {
 818                 DRM_ERROR("failed to allocate plane\n");
 819                 return ERR_PTR(-ENOMEM);
 820         }
 821
 822         ipu_plane->ipu = ipu;
 823         ipu_plane->dma = dma;
 824         ipu_plane->dp_flow = dp;
 825
 826         if (ipu_prg_present(ipu))
 827                 modifiers = pre_format_modifiers;
 828
 829         ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
 830                                        &ipu_plane_funcs, ipu_plane_formats,
 831                                        ARRAY_SIZE(ipu_plane_formats),
 832                                        modifiers, type, NULL);
 833         if (ret) {
 834                 DRM_ERROR("failed to initialize plane\n");
 835                 kfree(ipu_plane);
 836                 return ERR_PTR(ret);
 837         }
 838
 839         drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);
 840
 841         return ipu_plane;
 842 }