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 "ipuv3-plane.h"
  26
  27 struct ipu_plane_state {
  28         struct drm_plane_state base;
  29         bool use_pre;
  30 };
  31
  32 static inline struct ipu_plane_state *
  33 to_ipu_plane_state(struct drm_plane_state *p)
  34 {
  35         return container_of(p, struct ipu_plane_state, base);
  36 }
  37
  38 static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
  39 {
  40         return container_of(p, struct ipu_plane, base);
  41 }
  42
  43 static const uint32_t ipu_plane_formats[] = {
  44         DRM_FORMAT_ARGB1555,
  45         DRM_FORMAT_XRGB1555,
  46         DRM_FORMAT_ABGR1555,
  47         DRM_FORMAT_XBGR1555,
  48         DRM_FORMAT_RGBA5551,
  49         DRM_FORMAT_BGRA5551,
  50         DRM_FORMAT_ARGB4444,
  51         DRM_FORMAT_ARGB8888,
  52         DRM_FORMAT_XRGB8888,
  53         DRM_FORMAT_ABGR8888,
  54         DRM_FORMAT_XBGR8888,
  55         DRM_FORMAT_RGBA8888,
  56         DRM_FORMAT_RGBX8888,
  57         DRM_FORMAT_BGRA8888,
  58         DRM_FORMAT_BGRX8888,
  59         DRM_FORMAT_UYVY,
  60         DRM_FORMAT_VYUY,
  61         DRM_FORMAT_YUYV,
  62         DRM_FORMAT_YVYU,
  63         DRM_FORMAT_YUV420,
  64         DRM_FORMAT_YVU420,
  65         DRM_FORMAT_YUV422,
  66         DRM_FORMAT_YVU422,
  67         DRM_FORMAT_YUV444,
  68         DRM_FORMAT_YVU444,
  69         DRM_FORMAT_NV12,
  70         DRM_FORMAT_NV16,
  71         DRM_FORMAT_RGB565,
  72         DRM_FORMAT_RGB565_A8,
  73         DRM_FORMAT_BGR565_A8,
  74         DRM_FORMAT_RGB888_A8,
  75         DRM_FORMAT_BGR888_A8,
  76         DRM_FORMAT_RGBX8888_A8,
  77         DRM_FORMAT_BGRX8888_A8,
  78 };
  79
  80 static const uint64_t ipu_format_modifiers[] = {
  81         DRM_FORMAT_MOD_LINEAR,
  82         DRM_FORMAT_MOD_INVALID
  83 };
  84
  85 static const uint64_t pre_format_modifiers[] = {
  86         DRM_FORMAT_MOD_LINEAR,
  87         DRM_FORMAT_MOD_VIVANTE_TILED,
  88         DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
  89         DRM_FORMAT_MOD_INVALID
  90 };
  91
  92 int ipu_plane_irq(struct ipu_plane *ipu_plane)
  93 {
  94         return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
  95                                      IPU_IRQ_EOF);
  96 }
  97
  98 static inline unsigned long
  99 drm_plane_state_to_eba(struct drm_plane_state *state, int plane)
 100 {
 101         struct drm_framebuffer *fb = state->fb;
 102         struct drm_gem_cma_object *cma_obj;
 103         int x = state->src.x1 >> 16;
 104         int y = state->src.y1 >> 16;
 105
 106         cma_obj = drm_fb_cma_get_gem_obj(fb, plane);
 107         BUG_ON(!cma_obj);
 108
 109         return cma_obj->paddr + fb->offsets[plane] + fb->pitches[plane] * y +
 110                fb->format->cpp[plane] * x;
 111 }
 112
 113 static inline unsigned long
 114 drm_plane_state_to_ubo(struct drm_plane_state *state)
 115 {
 116         struct drm_framebuffer *fb = state->fb;
 117         struct drm_gem_cma_object *cma_obj;
 118         unsigned long eba = drm_plane_state_to_eba(state, 0);
 119         int x = state->src.x1 >> 16;
 120         int y = state->src.y1 >> 16;
 121
 122         cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
 123         BUG_ON(!cma_obj);
 124
 125         x /= drm_format_horz_chroma_subsampling(fb->format->format);
 126         y /= drm_format_vert_chroma_subsampling(fb->format->format);
 127
 128         return cma_obj->paddr + fb->offsets[1] + fb->pitches[1] * y +
 129                fb->format->cpp[1] * x - eba;
 130 }
 131
 132 static inline unsigned long
 133 drm_plane_state_to_vbo(struct drm_plane_state *state)
 134 {
 135         struct drm_framebuffer *fb = state->fb;
 136         struct drm_gem_cma_object *cma_obj;
 137         unsigned long eba = drm_plane_state_to_eba(state, 0);
 138         int x = state->src.x1 >> 16;
 139         int y = state->src.y1 >> 16;
 140
 141         cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
 142         BUG_ON(!cma_obj);
 143
 144         x /= drm_format_horz_chroma_subsampling(fb->format->format);
 145         y /= drm_format_vert_chroma_subsampling(fb->format->format);
 146
 147         return cma_obj->paddr + fb->offsets[2] + fb->pitches[2] * y +
 148                fb->format->cpp[2] * x - eba;
 149 }
 150
 151 void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
 152 {
 153         if (!IS_ERR_OR_NULL(ipu_plane->dp))
 154                 ipu_dp_put(ipu_plane->dp);
 155         if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
 156                 ipu_dmfc_put(ipu_plane->dmfc);
 157         if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
 158                 ipu_idmac_put(ipu_plane->ipu_ch);
 159         if (!IS_ERR_OR_NULL(ipu_plane->alpha_ch))
 160                 ipu_idmac_put(ipu_plane->alpha_ch);
 161 }
 162
 163 int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
 164 {
 165         int ret;
 166         int alpha_ch;
 167
 168         ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
 169         if (IS_ERR(ipu_plane->ipu_ch)) {
 170                 ret = PTR_ERR(ipu_plane->ipu_ch);
 171                 DRM_ERROR("failed to get idmac channel: %d\n", ret);
 172                 return ret;
 173         }
 174
 175         alpha_ch = ipu_channel_alpha_channel(ipu_plane->dma);
 176         if (alpha_ch >= 0) {
 177                 ipu_plane->alpha_ch = ipu_idmac_get(ipu_plane->ipu, alpha_ch);
 178                 if (IS_ERR(ipu_plane->alpha_ch)) {
 179                         ret = PTR_ERR(ipu_plane->alpha_ch);
 180                         DRM_ERROR("failed to get alpha idmac channel %d: %d\n",
 181                                   alpha_ch, ret);
 182                         return ret;
 183                 }
 184         }
 185
 186         ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
 187         if (IS_ERR(ipu_plane->dmfc)) {
 188                 ret = PTR_ERR(ipu_plane->dmfc);
 189                 DRM_ERROR("failed to get dmfc: ret %d\n", ret);
 190                 goto err_out;
 191         }
 192
 193         if (ipu_plane->dp_flow >= 0) {
 194                 ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
 195                 if (IS_ERR(ipu_plane->dp)) {
 196                         ret = PTR_ERR(ipu_plane->dp);
 197                         DRM_ERROR("failed to get dp flow: %d\n", ret);
 198                         goto err_out;
 199                 }
 200         }
 201
 202         return 0;
 203 err_out:
 204         ipu_plane_put_resources(ipu_plane);
 205
 206         return ret;
 207 }
 208
 209 static bool ipu_plane_separate_alpha(struct ipu_plane *ipu_plane)
 210 {
 211         switch (ipu_plane->base.state->fb->format->format) {
 212         case DRM_FORMAT_RGB565_A8:
 213         case DRM_FORMAT_BGR565_A8:
 214         case DRM_FORMAT_RGB888_A8:
 215         case DRM_FORMAT_BGR888_A8:
 216         case DRM_FORMAT_RGBX8888_A8:
 217         case DRM_FORMAT_BGRX8888_A8:
 218                 return true;
 219         default:
 220                 return false;
 221         }
 222 }
 223
 224 static void ipu_plane_enable(struct ipu_plane *ipu_plane)
 225 {
 226         if (ipu_plane->dp)
 227                 ipu_dp_enable(ipu_plane->ipu);
 228         ipu_dmfc_enable_channel(ipu_plane->dmfc);
 229         ipu_idmac_enable_channel(ipu_plane->ipu_ch);
 230         if (ipu_plane_separate_alpha(ipu_plane))
 231                 ipu_idmac_enable_channel(ipu_plane->alpha_ch);
 232         if (ipu_plane->dp)
 233                 ipu_dp_enable_channel(ipu_plane->dp);
 234 }
 235
 236 void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel)
 237 {
 238         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 239
 240         ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
 241
 242         if (ipu_plane->dp && disable_dp_channel)
 243                 ipu_dp_disable_channel(ipu_plane->dp, false);
 244         ipu_idmac_disable_channel(ipu_plane->ipu_ch);
 245         if (ipu_plane->alpha_ch)
 246                 ipu_idmac_disable_channel(ipu_plane->alpha_ch);
 247         ipu_dmfc_disable_channel(ipu_plane->dmfc);
 248         if (ipu_plane->dp)
 249                 ipu_dp_disable(ipu_plane->ipu);
 250         if (ipu_prg_present(ipu_plane->ipu))
 251                 ipu_prg_channel_disable(ipu_plane->ipu_ch);
 252 }
 253
 254 void ipu_plane_disable_deferred(struct drm_plane *plane)
 255 {
 256         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 257
 258         if (ipu_plane->disabling) {
 259                 ipu_plane->disabling = false;
 260                 ipu_plane_disable(ipu_plane, false);
 261         }
 262 }
 263 EXPORT_SYMBOL_GPL(ipu_plane_disable_deferred);
 264
 265 static void ipu_plane_destroy(struct drm_plane *plane)
 266 {
 267         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 268
 269         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 270
 271         drm_plane_cleanup(plane);
 272         kfree(ipu_plane);
 273 }
 274
 275 void ipu_plane_state_reset(struct drm_plane *plane)
 276 {
 277         struct ipu_plane_state *ipu_state;
 278
 279         if (plane->state) {
 280                 ipu_state = to_ipu_plane_state(plane->state);
 281                 __drm_atomic_helper_plane_destroy_state(plane->state);
 282                 kfree(ipu_state);
 283         }
 284
 285         ipu_state = kzalloc(sizeof(*ipu_state), GFP_KERNEL);
 286
 287         if (ipu_state) {
 288                 ipu_state->base.plane = plane;
 289                 ipu_state->base.rotation = DRM_MODE_ROTATE_0;
 290         }
 291
 292         plane->state = &ipu_state->base;
 293 }
 294
 295 struct drm_plane_state *ipu_plane_duplicate_state(struct drm_plane *plane)
 296 {
 297         struct ipu_plane_state *state;
 298
 299         if (WARN_ON(!plane->state))
 300                 return NULL;
 301
 302         state = kmalloc(sizeof(*state), GFP_KERNEL);
 303         if (state)
 304                 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
 305
 306         return &state->base;
 307 }
 308
 309 void ipu_plane_destroy_state(struct drm_plane *plane,
 310                              struct drm_plane_state *state)
 311 {
 312         struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
 313
 314         __drm_atomic_helper_plane_destroy_state(state);
 315         kfree(ipu_state);
 316 }
 317
 318 static bool ipu_plane_format_mod_supported(struct drm_plane *plane,
 319                                            uint32_t format, uint64_t modifier)
 320 {
 321         struct ipu_soc *ipu = to_ipu_plane(plane)->ipu;
 322
 323         /* linear is supported for all planes and formats */
 324         if (modifier == DRM_FORMAT_MOD_LINEAR)
 325                 return true;
 326
 327         /* without a PRG there are no supported modifiers */
 328         if (!ipu_prg_present(ipu))
 329                 return false;
 330
 331         return ipu_prg_format_supported(ipu, format, modifier);
 332 }
 333
 334 static const struct drm_plane_funcs ipu_plane_funcs = {
 335         .update_plane   = drm_atomic_helper_update_plane,
 336         .disable_plane  = drm_atomic_helper_disable_plane,
 337         .destroy        = ipu_plane_destroy,
 338         .reset          = ipu_plane_state_reset,
 339         .atomic_duplicate_state = ipu_plane_duplicate_state,
 340         .atomic_destroy_state   = ipu_plane_destroy_state,
 341         .format_mod_supported = ipu_plane_format_mod_supported,
 342 };
 343
 344 static int ipu_plane_atomic_check(struct drm_plane *plane,
 345                                   struct drm_plane_state *state)
 346 {
 347         struct drm_plane_state *old_state = plane->state;
 348         struct drm_crtc_state *crtc_state;
 349         struct device *dev = plane->dev->dev;
 350         struct drm_framebuffer *fb = state->fb;
 351         struct drm_framebuffer *old_fb = old_state->fb;
 352         unsigned long eba, ubo, vbo, old_ubo, old_vbo, alpha_eba;
 353         bool can_position = (plane->type == DRM_PLANE_TYPE_OVERLAY);
 354         struct drm_rect clip;
 355         int hsub, vsub;
 356         int ret;
 357
 358         /* Ok to disable */
 359         if (!fb)
 360                 return 0;
 361
 362         if (!state->crtc)
 363                 return -EINVAL;
 364
 365         crtc_state =
 366                 drm_atomic_get_existing_crtc_state(state->state, state->crtc);
 367         if (WARN_ON(!crtc_state))
 368                 return -EINVAL;
 369
 370         clip.x1 = 0;
 371         clip.y1 = 0;
 372         clip.x2 = crtc_state->adjusted_mode.hdisplay;
 373         clip.y2 = crtc_state->adjusted_mode.vdisplay;
 374         ret = drm_atomic_helper_check_plane_state(state, crtc_state, &clip,
 375                                                   DRM_PLANE_HELPER_NO_SCALING,
 376                                                   DRM_PLANE_HELPER_NO_SCALING,
 377                                                   can_position, true);
 378         if (ret)
 379                 return ret;
 380
 381         /* CRTC should be enabled */
 382         if (!crtc_state->enable)
 383                 return -EINVAL;
 384
 385         switch (plane->type) {
 386         case DRM_PLANE_TYPE_PRIMARY:
 387                 /* full plane minimum width is 13 pixels */
 388                 if (drm_rect_width(&state->dst) < 13)
 389                         return -EINVAL;
 390                 break;
 391         case DRM_PLANE_TYPE_OVERLAY:
 392                 break;
 393         default:
 394                 dev_warn(dev, "Unsupported plane type %d\n", plane->type);
 395                 return -EINVAL;
 396         }
 397
 398         if (drm_rect_height(&state->dst) < 2)
 399                 return -EINVAL;
 400
 401         /*
 402          * We support resizing active plane or changing its format by
 403          * forcing CRTC mode change in plane's ->atomic_check callback
 404          * and disabling all affected active planes in CRTC's ->atomic_disable
 405          * callback.  The planes will be reenabled in plane's ->atomic_update
 406          * callback.
 407          */
 408         if (old_fb &&
 409             (drm_rect_width(&state->dst) != drm_rect_width(&old_state->dst) ||
 410              drm_rect_height(&state->dst) != drm_rect_height(&old_state->dst) ||
 411              fb->format != old_fb->format))
 412                 crtc_state->mode_changed = true;
 413
 414         eba = drm_plane_state_to_eba(state, 0);
 415
 416         if (eba & 0x7)
 417                 return -EINVAL;
 418
 419         if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
 420                 return -EINVAL;
 421
 422         if (old_fb && fb->pitches[0] != old_fb->pitches[0])
 423                 crtc_state->mode_changed = true;
 424
 425         switch (fb->format->format) {
 426         case DRM_FORMAT_YUV420:
 427         case DRM_FORMAT_YVU420:
 428         case DRM_FORMAT_YUV422:
 429         case DRM_FORMAT_YVU422:
 430         case DRM_FORMAT_YUV444:
 431         case DRM_FORMAT_YVU444:
 432                 /*
 433                  * Multiplanar formats have to meet the following restrictions:
 434                  * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
 435                  * - EBA, UBO and VBO are a multiple of 8
 436                  * - UBO and VBO are unsigned and not larger than 0xfffff8
 437                  * - Only EBA may be changed while scanout is active
 438                  * - The strides of U and V planes must be identical.
 439                  */
 440                 vbo = drm_plane_state_to_vbo(state);
 441
 442                 if (vbo & 0x7 || vbo > 0xfffff8)
 443                         return -EINVAL;
 444
 445                 if (old_fb && (fb->format == old_fb->format)) {
 446                         old_vbo = drm_plane_state_to_vbo(old_state);
 447                         if (vbo != old_vbo)
 448                                 crtc_state->mode_changed = true;
 449                 }
 450
 451                 if (fb->pitches[1] != fb->pitches[2])
 452                         return -EINVAL;
 453
 454                 /* fall-through */
 455         case DRM_FORMAT_NV12:
 456         case DRM_FORMAT_NV16:
 457                 ubo = drm_plane_state_to_ubo(state);
 458
 459                 if (ubo & 0x7 || ubo > 0xfffff8)
 460                         return -EINVAL;
 461
 462                 if (old_fb && (fb->format == old_fb->format)) {
 463                         old_ubo = drm_plane_state_to_ubo(old_state);
 464                         if (ubo != old_ubo)
 465                                 crtc_state->mode_changed = true;
 466                 }
 467
 468                 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
 469                         return -EINVAL;
 470
 471                 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
 472                         crtc_state->mode_changed = true;
 473
 474                 /*
 475                  * The x/y offsets must be even in case of horizontal/vertical
 476                  * chroma subsampling.
 477                  */
 478                 hsub = drm_format_horz_chroma_subsampling(fb->format->format);
 479                 vsub = drm_format_vert_chroma_subsampling(fb->format->format);
 480                 if (((state->src.x1 >> 16) & (hsub - 1)) ||
 481                     ((state->src.y1 >> 16) & (vsub - 1)))
 482                         return -EINVAL;
 483                 break;
 484         case DRM_FORMAT_RGB565_A8:
 485         case DRM_FORMAT_BGR565_A8:
 486         case DRM_FORMAT_RGB888_A8:
 487         case DRM_FORMAT_BGR888_A8:
 488         case DRM_FORMAT_RGBX8888_A8:
 489         case DRM_FORMAT_BGRX8888_A8:
 490                 alpha_eba = drm_plane_state_to_eba(state, 1);
 491                 if (alpha_eba & 0x7)
 492                         return -EINVAL;
 493
 494                 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
 495                         return -EINVAL;
 496
 497                 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
 498                         crtc_state->mode_changed = true;
 499                 break;
 500         }
 501
 502         return 0;
 503 }
 504
 505 static void ipu_plane_atomic_disable(struct drm_plane *plane,
 506                                      struct drm_plane_state *old_state)
 507 {
 508         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 509
 510         if (ipu_plane->dp)
 511                 ipu_dp_disable_channel(ipu_plane->dp, true);
 512         ipu_plane->disabling = true;
 513 }
 514
 515 static int ipu_chan_assign_axi_id(int ipu_chan)
 516 {
 517         switch (ipu_chan) {
 518         case IPUV3_CHANNEL_MEM_BG_SYNC:
 519                 return 1;
 520         case IPUV3_CHANNEL_MEM_FG_SYNC:
 521                 return 2;
 522         case IPUV3_CHANNEL_MEM_DC_SYNC:
 523                 return 3;
 524         default:
 525                 return 0;
 526         }
 527 }
 528
 529 static void ipu_calculate_bursts(u32 width, u32 cpp, u32 stride,
 530                                  u8 *burstsize, u8 *num_bursts)
 531 {
 532         const unsigned int width_bytes = width * cpp;
 533         unsigned int npb, bursts;
 534
 535         /* Maximum number of pixels per burst without overshooting stride */
 536         for (npb = 64 / cpp; npb > 0; --npb) {
 537                 if (round_up(width_bytes, npb * cpp) <= stride)
 538                         break;
 539         }
 540         *burstsize = npb;
 541
 542         /* Maximum number of consecutive bursts without overshooting stride */
 543         for (bursts = 8; bursts > 1; bursts /= 2) {
 544                 if (round_up(width_bytes, npb * cpp * bursts) <= stride)
 545                         break;
 546         }
 547         *num_bursts = bursts;
 548 }
 549
 550 static void ipu_plane_atomic_update(struct drm_plane *plane,
 551                                     struct drm_plane_state *old_state)
 552 {
 553         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 554         struct drm_plane_state *state = plane->state;
 555         struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
 556         struct drm_crtc_state *crtc_state = state->crtc->state;
 557         struct drm_framebuffer *fb = state->fb;
 558         struct drm_rect *dst = &state->dst;
 559         unsigned long eba, ubo, vbo;
 560         unsigned long alpha_eba = 0;
 561         enum ipu_color_space ics;
 562         unsigned int axi_id = 0;
 563         const struct drm_format_info *info;
 564         u8 burstsize, num_bursts;
 565         u32 width, height;
 566         int active;
 567
 568         if (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_FG)
 569                 ipu_dp_set_window_pos(ipu_plane->dp, dst->x1, dst->y1);
 570
 571         eba = drm_plane_state_to_eba(state, 0);
 572
 573         /*
 574          * Configure PRG channel and attached PRE, this changes the EBA to an
 575          * internal SRAM location.
 576          */
 577         if (ipu_state->use_pre) {
 578                 axi_id = ipu_chan_assign_axi_id(ipu_plane->dma);
 579                 ipu_prg_channel_configure(ipu_plane->ipu_ch, axi_id,
 580                                           drm_rect_width(&state->src) >> 16,
 581                                           drm_rect_height(&state->src) >> 16,
 582                                           fb->pitches[0], fb->format->format,
 583                                           fb->modifier, &eba);
 584         }
 585
 586         if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state)) {
 587                 /* nothing to do if PRE is used */
 588                 if (ipu_state->use_pre)
 589                         return;
 590                 active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
 591                 ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
 592                 ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
 593                 if (ipu_plane_separate_alpha(ipu_plane)) {
 594                         active = ipu_idmac_get_current_buffer(ipu_plane->alpha_ch);
 595                         ipu_cpmem_set_buffer(ipu_plane->alpha_ch, !active,
 596                                              alpha_eba);
 597                         ipu_idmac_select_buffer(ipu_plane->alpha_ch, !active);
 598                 }
 599                 return;
 600         }
 601
 602         ics = ipu_drm_fourcc_to_colorspace(fb->format->format);
 603         switch (ipu_plane->dp_flow) {
 604         case IPU_DP_FLOW_SYNC_BG:
 605                 ipu_dp_setup_channel(ipu_plane->dp, ics, IPUV3_COLORSPACE_RGB);
 606                 ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 607                 break;
 608         case IPU_DP_FLOW_SYNC_FG:
 609                 ipu_dp_setup_channel(ipu_plane->dp, ics,
 610                                         IPUV3_COLORSPACE_UNKNOWN);
 611                 /* Enable local alpha on partial plane */
 612                 switch (fb->format->format) {
 613                 case DRM_FORMAT_ARGB1555:
 614                 case DRM_FORMAT_ABGR1555:
 615                 case DRM_FORMAT_RGBA5551:
 616                 case DRM_FORMAT_BGRA5551:
 617                 case DRM_FORMAT_ARGB4444:
 618                 case DRM_FORMAT_ARGB8888:
 619                 case DRM_FORMAT_ABGR8888:
 620                 case DRM_FORMAT_RGBA8888:
 621                 case DRM_FORMAT_BGRA8888:
 622                 case DRM_FORMAT_RGB565_A8:
 623                 case DRM_FORMAT_BGR565_A8:
 624                 case DRM_FORMAT_RGB888_A8:
 625                 case DRM_FORMAT_BGR888_A8:
 626                 case DRM_FORMAT_RGBX8888_A8:
 627                 case DRM_FORMAT_BGRX8888_A8:
 628                         ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
 629                         break;
 630                 default:
 631                         ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 632                         break;
 633                 }
 634         }
 635
 636         ipu_dmfc_config_wait4eot(ipu_plane->dmfc, drm_rect_width(dst));
 637
 638         width = drm_rect_width(&state->src) >> 16;
 639         height = drm_rect_height(&state->src) >> 16;
 640         info = drm_format_info(fb->format->format);
 641         ipu_calculate_bursts(width, info->cpp[0], fb->pitches[0],
 642                              &burstsize, &num_bursts);
 643
 644         ipu_cpmem_zero(ipu_plane->ipu_ch);
 645         ipu_cpmem_set_resolution(ipu_plane->ipu_ch, width, height);
 646         ipu_cpmem_set_fmt(ipu_plane->ipu_ch, fb->format->format);
 647         ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, burstsize);
 648         ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
 649         ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
 650         ipu_cpmem_set_stride(ipu_plane->ipu_ch, fb->pitches[0]);
 651         ipu_cpmem_set_axi_id(ipu_plane->ipu_ch, axi_id);
 652
 653         switch (fb->format->format) {
 654         case DRM_FORMAT_YUV420:
 655         case DRM_FORMAT_YVU420:
 656         case DRM_FORMAT_YUV422:
 657         case DRM_FORMAT_YVU422:
 658         case DRM_FORMAT_YUV444:
 659         case DRM_FORMAT_YVU444:
 660                 ubo = drm_plane_state_to_ubo(state);
 661                 vbo = drm_plane_state_to_vbo(state);
 662                 if (fb->format->format == DRM_FORMAT_YVU420 ||
 663                     fb->format->format == DRM_FORMAT_YVU422 ||
 664                     fb->format->format == DRM_FORMAT_YVU444)
 665                         swap(ubo, vbo);
 666
 667                 ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
 668                                               fb->pitches[1], ubo, vbo);
 669
 670                 dev_dbg(ipu_plane->base.dev->dev,
 671                         "phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
 672                         state->src.x1 >> 16, state->src.y1 >> 16);
 673                 break;
 674         case DRM_FORMAT_NV12:
 675         case DRM_FORMAT_NV16:
 676                 ubo = drm_plane_state_to_ubo(state);
 677
 678                 ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
 679                                               fb->pitches[1], ubo, ubo);
 680
 681                 dev_dbg(ipu_plane->base.dev->dev,
 682                         "phy = %lu %lu, x = %d, y = %d", eba, ubo,
 683                         state->src.x1 >> 16, state->src.y1 >> 16);
 684                 break;
 685         case DRM_FORMAT_RGB565_A8:
 686         case DRM_FORMAT_BGR565_A8:
 687         case DRM_FORMAT_RGB888_A8:
 688         case DRM_FORMAT_BGR888_A8:
 689         case DRM_FORMAT_RGBX8888_A8:
 690         case DRM_FORMAT_BGRX8888_A8:
 691                 alpha_eba = drm_plane_state_to_eba(state, 1);
 692                 num_bursts = 0;
 693
 694                 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu %lu, x = %d, y = %d",
 695                         eba, alpha_eba, state->src.x1 >> 16, state->src.y1 >> 16);
 696
 697                 ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, 16);
 698
 699                 ipu_cpmem_zero(ipu_plane->alpha_ch);
 700                 ipu_cpmem_set_resolution(ipu_plane->alpha_ch,
 701                                          drm_rect_width(&state->src) >> 16,
 702                                          drm_rect_height(&state->src) >> 16);
 703                 ipu_cpmem_set_format_passthrough(ipu_plane->alpha_ch, 8);
 704                 ipu_cpmem_set_high_priority(ipu_plane->alpha_ch);
 705                 ipu_idmac_set_double_buffer(ipu_plane->alpha_ch, 1);
 706                 ipu_cpmem_set_stride(ipu_plane->alpha_ch, fb->pitches[1]);
 707                 ipu_cpmem_set_burstsize(ipu_plane->alpha_ch, 16);
 708                 ipu_cpmem_set_buffer(ipu_plane->alpha_ch, 0, alpha_eba);
 709                 ipu_cpmem_set_buffer(ipu_plane->alpha_ch, 1, alpha_eba);
 710                 break;
 711         default:
 712                 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
 713                         eba, state->src.x1 >> 16, state->src.y1 >> 16);
 714                 break;
 715         }
 716         ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
 717         ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
 718         ipu_idmac_lock_enable(ipu_plane->ipu_ch, num_bursts);
 719         ipu_plane_enable(ipu_plane);
 720 }
 721
 722 static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
 723         .prepare_fb = drm_gem_fb_prepare_fb,
 724         .atomic_check = ipu_plane_atomic_check,
 725         .atomic_disable = ipu_plane_atomic_disable,
 726         .atomic_update = ipu_plane_atomic_update,
 727 };
 728
 729 int ipu_planes_assign_pre(struct drm_device *dev,
 730                           struct drm_atomic_state *state)
 731 {
 732         struct drm_crtc_state *old_crtc_state, *crtc_state;
 733         struct drm_plane_state *plane_state;
 734         struct ipu_plane_state *ipu_state;
 735         struct ipu_plane *ipu_plane;
 736         struct drm_plane *plane;
 737         struct drm_crtc *crtc;
 738         int available_pres = ipu_prg_max_active_channels();
 739         int ret, i;
 740
 741         for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, crtc_state, i) {
 742                 ret = drm_atomic_add_affected_planes(state, crtc);
 743                 if (ret)
 744                         return ret;
 745         }
 746
 747         /*
 748          * We are going over the planes in 2 passes: first we assign PREs to
 749          * planes with a tiling modifier, which need the PREs to resolve into
 750          * linear. Any failure to assign a PRE there is fatal. In the second
 751          * pass we try to assign PREs to linear FBs, to improve memory access
 752          * patterns for them. Failure at this point is non-fatal, as we can
 753          * scan out linear FBs without a PRE.
 754          */
 755         for_each_new_plane_in_state(state, plane, plane_state, i) {
 756                 ipu_state = to_ipu_plane_state(plane_state);
 757                 ipu_plane = to_ipu_plane(plane);
 758
 759                 if (!plane_state->fb) {
 760                         ipu_state->use_pre = false;
 761                         continue;
 762                 }
 763
 764                 if (!(plane_state->fb->flags & DRM_MODE_FB_MODIFIERS) ||
 765                     plane_state->fb->modifier == DRM_FORMAT_MOD_LINEAR)
 766                         continue;
 767
 768                 if (!ipu_prg_present(ipu_plane->ipu) || !available_pres)
 769                         return -EINVAL;
 770
 771                 if (!ipu_prg_format_supported(ipu_plane->ipu,
 772                                               plane_state->fb->format->format,
 773                                               plane_state->fb->modifier))
 774                         return -EINVAL;
 775
 776                 ipu_state->use_pre = true;
 777                 available_pres--;
 778         }
 779
 780         for_each_new_plane_in_state(state, plane, plane_state, i) {
 781                 ipu_state = to_ipu_plane_state(plane_state);
 782                 ipu_plane = to_ipu_plane(plane);
 783
 784                 if (!plane_state->fb) {
 785                         ipu_state->use_pre = false;
 786                         continue;
 787                 }
 788
 789                 if ((plane_state->fb->flags & DRM_MODE_FB_MODIFIERS) &&
 790                     plane_state->fb->modifier != DRM_FORMAT_MOD_LINEAR)
 791                         continue;
 792
 793                 /* make sure that modifier is initialized */
 794                 plane_state->fb->modifier = DRM_FORMAT_MOD_LINEAR;
 795
 796                 if (ipu_prg_present(ipu_plane->ipu) && available_pres &&
 797                     ipu_prg_format_supported(ipu_plane->ipu,
 798                                              plane_state->fb->format->format,
 799                                              plane_state->fb->modifier)) {
 800                         ipu_state->use_pre = true;
 801                         available_pres--;
 802                 } else {
 803                         ipu_state->use_pre = false;
 804                 }
 805         }
 806
 807         return 0;
 808 }
 809 EXPORT_SYMBOL_GPL(ipu_planes_assign_pre);
 810
 811 struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
 812                                  int dma, int dp, unsigned int possible_crtcs,
 813                                  enum drm_plane_type type)
 814 {
 815         struct ipu_plane *ipu_plane;
 816         const uint64_t *modifiers = ipu_format_modifiers;
 817         int ret;
 818
 819         DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
 820                       dma, dp, possible_crtcs);
 821
 822         ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
 823         if (!ipu_plane) {
 824                 DRM_ERROR("failed to allocate plane\n");
 825                 return ERR_PTR(-ENOMEM);
 826         }
 827
 828         ipu_plane->ipu = ipu;
 829         ipu_plane->dma = dma;
 830         ipu_plane->dp_flow = dp;
 831
 832         if (ipu_prg_present(ipu))
 833                 modifiers = pre_format_modifiers;
 834
 835         ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
 836                                        &ipu_plane_funcs, ipu_plane_formats,
 837                                        ARRAY_SIZE(ipu_plane_formats),
 838                                        modifiers, type, NULL);
 839         if (ret) {
 840                 DRM_ERROR("failed to initialize plane\n");
 841                 kfree(ipu_plane);
 842                 return ERR_PTR(ret);
 843         }
 844
 845         drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);
 846
 847         return ipu_plane;
 848 }