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_plane_helper.h>
  22
  23 #include "video/imx-ipu-v3.h"
  24 #include "ipuv3-plane.h"
  25
  26 struct ipu_plane_state {
  27         struct drm_plane_state base;
  28         bool use_pre;
  29 };
  30
  31 static inline struct ipu_plane_state *
  32 to_ipu_plane_state(struct drm_plane_state *p)
  33 {
  34         return container_of(p, struct ipu_plane_state, base);
  35 }
  36
  37 static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
  38 {
  39         return container_of(p, struct ipu_plane, base);
  40 }
  41
  42 static const uint32_t ipu_plane_formats[] = {
  43         DRM_FORMAT_ARGB1555,
  44         DRM_FORMAT_XRGB1555,
  45         DRM_FORMAT_ABGR1555,
  46         DRM_FORMAT_XBGR1555,
  47         DRM_FORMAT_RGBA5551,
  48         DRM_FORMAT_BGRA5551,
  49         DRM_FORMAT_ARGB4444,
  50         DRM_FORMAT_ARGB8888,
  51         DRM_FORMAT_XRGB8888,
  52         DRM_FORMAT_ABGR8888,
  53         DRM_FORMAT_XBGR8888,
  54         DRM_FORMAT_RGBA8888,
  55         DRM_FORMAT_RGBX8888,
  56         DRM_FORMAT_BGRA8888,
  57         DRM_FORMAT_BGRX8888,
  58         DRM_FORMAT_UYVY,
  59         DRM_FORMAT_VYUY,
  60         DRM_FORMAT_YUYV,
  61         DRM_FORMAT_YVYU,
  62         DRM_FORMAT_YUV420,
  63         DRM_FORMAT_YVU420,
  64         DRM_FORMAT_YUV422,
  65         DRM_FORMAT_YVU422,
  66         DRM_FORMAT_YUV444,
  67         DRM_FORMAT_YVU444,
  68         DRM_FORMAT_NV12,
  69         DRM_FORMAT_NV16,
  70         DRM_FORMAT_RGB565,
  71         DRM_FORMAT_RGB565_A8,
  72         DRM_FORMAT_BGR565_A8,
  73         DRM_FORMAT_RGB888_A8,
  74         DRM_FORMAT_BGR888_A8,
  75         DRM_FORMAT_RGBX8888_A8,
  76         DRM_FORMAT_BGRX8888_A8,
  77 };
  78
  79 int ipu_plane_irq(struct ipu_plane *ipu_plane)
  80 {
  81         return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
  82                                      IPU_IRQ_EOF);
  83 }
  84
  85 static inline unsigned long
  86 drm_plane_state_to_eba(struct drm_plane_state *state, int plane)
  87 {
  88         struct drm_framebuffer *fb = state->fb;
  89         struct drm_gem_cma_object *cma_obj;
  90         int x = state->src.x1 >> 16;
  91         int y = state->src.y1 >> 16;
  92
  93         cma_obj = drm_fb_cma_get_gem_obj(fb, plane);
  94         BUG_ON(!cma_obj);
  95
  96         return cma_obj->paddr + fb->offsets[plane] + fb->pitches[plane] * y +
  97                fb->format->cpp[plane] * x;
  98 }
  99
 100 static inline unsigned long
 101 drm_plane_state_to_ubo(struct drm_plane_state *state)
 102 {
 103         struct drm_framebuffer *fb = state->fb;
 104         struct drm_gem_cma_object *cma_obj;
 105         unsigned long eba = drm_plane_state_to_eba(state, 0);
 106         int x = state->src.x1 >> 16;
 107         int y = state->src.y1 >> 16;
 108
 109         cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
 110         BUG_ON(!cma_obj);
 111
 112         x /= drm_format_horz_chroma_subsampling(fb->format->format);
 113         y /= drm_format_vert_chroma_subsampling(fb->format->format);
 114
 115         return cma_obj->paddr + fb->offsets[1] + fb->pitches[1] * y +
 116                fb->format->cpp[1] * x - eba;
 117 }
 118
 119 static inline unsigned long
 120 drm_plane_state_to_vbo(struct drm_plane_state *state)
 121 {
 122         struct drm_framebuffer *fb = state->fb;
 123         struct drm_gem_cma_object *cma_obj;
 124         unsigned long eba = drm_plane_state_to_eba(state, 0);
 125         int x = state->src.x1 >> 16;
 126         int y = state->src.y1 >> 16;
 127
 128         cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
 129         BUG_ON(!cma_obj);
 130
 131         x /= drm_format_horz_chroma_subsampling(fb->format->format);
 132         y /= drm_format_vert_chroma_subsampling(fb->format->format);
 133
 134         return cma_obj->paddr + fb->offsets[2] + fb->pitches[2] * y +
 135                fb->format->cpp[2] * x - eba;
 136 }
 137
 138 void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
 139 {
 140         if (!IS_ERR_OR_NULL(ipu_plane->dp))
 141                 ipu_dp_put(ipu_plane->dp);
 142         if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
 143                 ipu_dmfc_put(ipu_plane->dmfc);
 144         if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
 145                 ipu_idmac_put(ipu_plane->ipu_ch);
 146         if (!IS_ERR_OR_NULL(ipu_plane->alpha_ch))
 147                 ipu_idmac_put(ipu_plane->alpha_ch);
 148 }
 149
 150 int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
 151 {
 152         int ret;
 153         int alpha_ch;
 154
 155         ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
 156         if (IS_ERR(ipu_plane->ipu_ch)) {
 157                 ret = PTR_ERR(ipu_plane->ipu_ch);
 158                 DRM_ERROR("failed to get idmac channel: %d\n", ret);
 159                 return ret;
 160         }
 161
 162         alpha_ch = ipu_channel_alpha_channel(ipu_plane->dma);
 163         if (alpha_ch >= 0) {
 164                 ipu_plane->alpha_ch = ipu_idmac_get(ipu_plane->ipu, alpha_ch);
 165                 if (IS_ERR(ipu_plane->alpha_ch)) {
 166                         ret = PTR_ERR(ipu_plane->alpha_ch);
 167                         DRM_ERROR("failed to get alpha idmac channel %d: %d\n",
 168                                   alpha_ch, ret);
 169                         return ret;
 170                 }
 171         }
 172
 173         ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
 174         if (IS_ERR(ipu_plane->dmfc)) {
 175                 ret = PTR_ERR(ipu_plane->dmfc);
 176                 DRM_ERROR("failed to get dmfc: ret %d\n", ret);
 177                 goto err_out;
 178         }
 179
 180         if (ipu_plane->dp_flow >= 0) {
 181                 ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
 182                 if (IS_ERR(ipu_plane->dp)) {
 183                         ret = PTR_ERR(ipu_plane->dp);
 184                         DRM_ERROR("failed to get dp flow: %d\n", ret);
 185                         goto err_out;
 186                 }
 187         }
 188
 189         return 0;
 190 err_out:
 191         ipu_plane_put_resources(ipu_plane);
 192
 193         return ret;
 194 }
 195
 196 static bool ipu_plane_separate_alpha(struct ipu_plane *ipu_plane)
 197 {
 198         switch (ipu_plane->base.state->fb->format->format) {
 199         case DRM_FORMAT_RGB565_A8:
 200         case DRM_FORMAT_BGR565_A8:
 201         case DRM_FORMAT_RGB888_A8:
 202         case DRM_FORMAT_BGR888_A8:
 203         case DRM_FORMAT_RGBX8888_A8:
 204         case DRM_FORMAT_BGRX8888_A8:
 205                 return true;
 206         default:
 207                 return false;
 208         }
 209 }
 210
 211 static void ipu_plane_enable(struct ipu_plane *ipu_plane)
 212 {
 213         if (ipu_plane->dp)
 214                 ipu_dp_enable(ipu_plane->ipu);
 215         ipu_dmfc_enable_channel(ipu_plane->dmfc);
 216         ipu_idmac_enable_channel(ipu_plane->ipu_ch);
 217         if (ipu_plane_separate_alpha(ipu_plane))
 218                 ipu_idmac_enable_channel(ipu_plane->alpha_ch);
 219         if (ipu_plane->dp)
 220                 ipu_dp_enable_channel(ipu_plane->dp);
 221 }
 222
 223 void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel)
 224 {
 225         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 226
 227         ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
 228
 229         if (ipu_plane->dp && disable_dp_channel)
 230                 ipu_dp_disable_channel(ipu_plane->dp, false);
 231         ipu_idmac_disable_channel(ipu_plane->ipu_ch);
 232         if (ipu_plane->alpha_ch)
 233                 ipu_idmac_disable_channel(ipu_plane->alpha_ch);
 234         ipu_dmfc_disable_channel(ipu_plane->dmfc);
 235         if (ipu_plane->dp)
 236                 ipu_dp_disable(ipu_plane->ipu);
 237         if (ipu_prg_present(ipu_plane->ipu))
 238                 ipu_prg_channel_disable(ipu_plane->ipu_ch);
 239 }
 240
 241 void ipu_plane_disable_deferred(struct drm_plane *plane)
 242 {
 243         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 244
 245         if (ipu_plane->disabling) {
 246                 ipu_plane->disabling = false;
 247                 ipu_plane_disable(ipu_plane, false);
 248         }
 249 }
 250 EXPORT_SYMBOL_GPL(ipu_plane_disable_deferred);
 251
 252 static void ipu_plane_destroy(struct drm_plane *plane)
 253 {
 254         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 255
 256         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 257
 258         drm_plane_cleanup(plane);
 259         kfree(ipu_plane);
 260 }
 261
 262 void ipu_plane_state_reset(struct drm_plane *plane)
 263 {
 264         struct ipu_plane_state *ipu_state;
 265
 266         if (plane->state) {
 267                 ipu_state = to_ipu_plane_state(plane->state);
 268                 __drm_atomic_helper_plane_destroy_state(plane->state);
 269                 kfree(ipu_state);
 270         }
 271
 272         ipu_state = kzalloc(sizeof(*ipu_state), GFP_KERNEL);
 273
 274         if (ipu_state) {
 275                 ipu_state->base.plane = plane;
 276                 ipu_state->base.rotation = DRM_MODE_ROTATE_0;
 277         }
 278
 279         plane->state = &ipu_state->base;
 280 }
 281
 282 struct drm_plane_state *ipu_plane_duplicate_state(struct drm_plane *plane)
 283 {
 284         struct ipu_plane_state *state;
 285
 286         if (WARN_ON(!plane->state))
 287                 return NULL;
 288
 289         state = kmalloc(sizeof(*state), GFP_KERNEL);
 290         if (state)
 291                 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
 292
 293         return &state->base;
 294 }
 295
 296 void ipu_plane_destroy_state(struct drm_plane *plane,
 297                              struct drm_plane_state *state)
 298 {
 299         struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
 300
 301         __drm_atomic_helper_plane_destroy_state(state);
 302         kfree(ipu_state);
 303 }
 304
 305 static const struct drm_plane_funcs ipu_plane_funcs = {
 306         .update_plane   = drm_atomic_helper_update_plane,
 307         .disable_plane  = drm_atomic_helper_disable_plane,
 308         .destroy        = ipu_plane_destroy,
 309         .reset          = ipu_plane_state_reset,
 310         .atomic_duplicate_state = ipu_plane_duplicate_state,
 311         .atomic_destroy_state   = ipu_plane_destroy_state,
 312 };
 313
 314 static int ipu_plane_atomic_check(struct drm_plane *plane,
 315                                   struct drm_plane_state *state)
 316 {
 317         struct drm_plane_state *old_state = plane->state;
 318         struct drm_crtc_state *crtc_state;
 319         struct device *dev = plane->dev->dev;
 320         struct drm_framebuffer *fb = state->fb;
 321         struct drm_framebuffer *old_fb = old_state->fb;
 322         unsigned long eba, ubo, vbo, old_ubo, old_vbo, alpha_eba;
 323         bool can_position = (plane->type == DRM_PLANE_TYPE_OVERLAY);
 324         struct drm_rect clip;
 325         int hsub, vsub;
 326         int ret;
 327
 328         /* Ok to disable */
 329         if (!fb)
 330                 return 0;
 331
 332         if (!state->crtc)
 333                 return -EINVAL;
 334
 335         crtc_state =
 336                 drm_atomic_get_existing_crtc_state(state->state, state->crtc);
 337         if (WARN_ON(!crtc_state))
 338                 return -EINVAL;
 339
 340         clip.x1 = 0;
 341         clip.y1 = 0;
 342         clip.x2 = crtc_state->adjusted_mode.hdisplay;
 343         clip.y2 = crtc_state->adjusted_mode.vdisplay;
 344         ret = drm_plane_helper_check_state(state, &clip,
 345                                            DRM_PLANE_HELPER_NO_SCALING,
 346                                            DRM_PLANE_HELPER_NO_SCALING,
 347                                            can_position, true);
 348         if (ret)
 349                 return ret;
 350
 351         /* CRTC should be enabled */
 352         if (!crtc_state->enable)
 353                 return -EINVAL;
 354
 355         switch (plane->type) {
 356         case DRM_PLANE_TYPE_PRIMARY:
 357                 /* full plane minimum width is 13 pixels */
 358                 if (drm_rect_width(&state->dst) < 13)
 359                         return -EINVAL;
 360                 break;
 361         case DRM_PLANE_TYPE_OVERLAY:
 362                 break;
 363         default:
 364                 dev_warn(dev, "Unsupported plane type %d\n", plane->type);
 365                 return -EINVAL;
 366         }
 367
 368         if (drm_rect_height(&state->dst) < 2)
 369                 return -EINVAL;
 370
 371         /*
 372          * We support resizing active plane or changing its format by
 373          * forcing CRTC mode change in plane's ->atomic_check callback
 374          * and disabling all affected active planes in CRTC's ->atomic_disable
 375          * callback.  The planes will be reenabled in plane's ->atomic_update
 376          * callback.
 377          */
 378         if (old_fb &&
 379             (drm_rect_width(&state->dst) != drm_rect_width(&old_state->dst) ||
 380              drm_rect_height(&state->dst) != drm_rect_height(&old_state->dst) ||
 381              fb->format != old_fb->format))
 382                 crtc_state->mode_changed = true;
 383
 384         eba = drm_plane_state_to_eba(state, 0);
 385
 386         if (eba & 0x7)
 387                 return -EINVAL;
 388
 389         if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
 390                 return -EINVAL;
 391
 392         if (old_fb && fb->pitches[0] != old_fb->pitches[0])
 393                 crtc_state->mode_changed = true;
 394
 395         switch (fb->format->format) {
 396         case DRM_FORMAT_YUV420:
 397         case DRM_FORMAT_YVU420:
 398         case DRM_FORMAT_YUV422:
 399         case DRM_FORMAT_YVU422:
 400         case DRM_FORMAT_YUV444:
 401         case DRM_FORMAT_YVU444:
 402                 /*
 403                  * Multiplanar formats have to meet the following restrictions:
 404                  * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
 405                  * - EBA, UBO and VBO are a multiple of 8
 406                  * - UBO and VBO are unsigned and not larger than 0xfffff8
 407                  * - Only EBA may be changed while scanout is active
 408                  * - The strides of U and V planes must be identical.
 409                  */
 410                 vbo = drm_plane_state_to_vbo(state);
 411
 412                 if (vbo & 0x7 || vbo > 0xfffff8)
 413                         return -EINVAL;
 414
 415                 if (old_fb && (fb->format == old_fb->format)) {
 416                         old_vbo = drm_plane_state_to_vbo(old_state);
 417                         if (vbo != old_vbo)
 418                                 crtc_state->mode_changed = true;
 419                 }
 420
 421                 if (fb->pitches[1] != fb->pitches[2])
 422                         return -EINVAL;
 423
 424                 /* fall-through */
 425         case DRM_FORMAT_NV12:
 426         case DRM_FORMAT_NV16:
 427                 ubo = drm_plane_state_to_ubo(state);
 428
 429                 if (ubo & 0x7 || ubo > 0xfffff8)
 430                         return -EINVAL;
 431
 432                 if (old_fb && (fb->format == old_fb->format)) {
 433                         old_ubo = drm_plane_state_to_ubo(old_state);
 434                         if (ubo != old_ubo)
 435                                 crtc_state->mode_changed = true;
 436                 }
 437
 438                 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
 439                         return -EINVAL;
 440
 441                 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
 442                         crtc_state->mode_changed = true;
 443
 444                 /*
 445                  * The x/y offsets must be even in case of horizontal/vertical
 446                  * chroma subsampling.
 447                  */
 448                 hsub = drm_format_horz_chroma_subsampling(fb->format->format);
 449                 vsub = drm_format_vert_chroma_subsampling(fb->format->format);
 450                 if (((state->src.x1 >> 16) & (hsub - 1)) ||
 451                     ((state->src.y1 >> 16) & (vsub - 1)))
 452                         return -EINVAL;
 453                 break;
 454         case DRM_FORMAT_RGB565_A8:
 455         case DRM_FORMAT_BGR565_A8:
 456         case DRM_FORMAT_RGB888_A8:
 457         case DRM_FORMAT_BGR888_A8:
 458         case DRM_FORMAT_RGBX8888_A8:
 459         case DRM_FORMAT_BGRX8888_A8:
 460                 alpha_eba = drm_plane_state_to_eba(state, 1);
 461                 if (alpha_eba & 0x7)
 462                         return -EINVAL;
 463
 464                 if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
 465                         return -EINVAL;
 466
 467                 if (old_fb && old_fb->pitches[1] != fb->pitches[1])
 468                         crtc_state->mode_changed = true;
 469                 break;
 470         }
 471
 472         return 0;
 473 }
 474
 475 static void ipu_plane_atomic_disable(struct drm_plane *plane,
 476                                      struct drm_plane_state *old_state)
 477 {
 478         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 479
 480         if (ipu_plane->dp)
 481                 ipu_dp_disable_channel(ipu_plane->dp, true);
 482         ipu_plane->disabling = true;
 483 }
 484
 485 static int ipu_chan_assign_axi_id(int ipu_chan)
 486 {
 487         switch (ipu_chan) {
 488         case IPUV3_CHANNEL_MEM_BG_SYNC:
 489                 return 1;
 490         case IPUV3_CHANNEL_MEM_FG_SYNC:
 491                 return 2;
 492         case IPUV3_CHANNEL_MEM_DC_SYNC:
 493                 return 3;
 494         default:
 495                 return 0;
 496         }
 497 }
 498
 499 static void ipu_plane_atomic_update(struct drm_plane *plane,
 500                                     struct drm_plane_state *old_state)
 501 {
 502         struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 503         struct drm_plane_state *state = plane->state;
 504         struct ipu_plane_state *ipu_state = to_ipu_plane_state(state);
 505         struct drm_crtc_state *crtc_state = state->crtc->state;
 506         struct drm_framebuffer *fb = state->fb;
 507         struct drm_rect *dst = &state->dst;
 508         unsigned long eba, ubo, vbo;
 509         unsigned long alpha_eba = 0;
 510         enum ipu_color_space ics;
 511         unsigned int axi_id = 0;
 512         int active;
 513
 514         if (ipu_plane->dp_flow == IPU_DP_FLOW_SYNC_FG)
 515                 ipu_dp_set_window_pos(ipu_plane->dp, dst->x1, dst->y1);
 516
 517         eba = drm_plane_state_to_eba(state, 0);
 518
 519         /*
 520          * Configure PRG channel and attached PRE, this changes the EBA to an
 521          * internal SRAM location.
 522          */
 523         if (ipu_state->use_pre) {
 524                 axi_id = ipu_chan_assign_axi_id(ipu_plane->dma);
 525                 ipu_prg_channel_configure(ipu_plane->ipu_ch, axi_id,
 526                                           drm_rect_width(&state->src) >> 16,
 527                                           drm_rect_height(&state->src) >> 16,
 528                                           state->fb->pitches[0],
 529                                           state->fb->format->format, &eba);
 530         }
 531
 532         if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state)) {
 533                 /* nothing to do if PRE is used */
 534                 if (ipu_state->use_pre)
 535                         return;
 536                 active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
 537                 ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
 538                 ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
 539                 if (ipu_plane_separate_alpha(ipu_plane)) {
 540                         active = ipu_idmac_get_current_buffer(ipu_plane->alpha_ch);
 541                         ipu_cpmem_set_buffer(ipu_plane->alpha_ch, !active,
 542                                              alpha_eba);
 543                         ipu_idmac_select_buffer(ipu_plane->alpha_ch, !active);
 544                 }
 545                 return;
 546         }
 547
 548         switch (ipu_plane->dp_flow) {
 549         case IPU_DP_FLOW_SYNC_BG:
 550                 ipu_dp_setup_channel(ipu_plane->dp,
 551                                         IPUV3_COLORSPACE_RGB,
 552                                         IPUV3_COLORSPACE_RGB);
 553                 ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 554                 break;
 555         case IPU_DP_FLOW_SYNC_FG:
 556                 ics = ipu_drm_fourcc_to_colorspace(state->fb->format->format);
 557                 ipu_dp_setup_channel(ipu_plane->dp, ics,
 558                                         IPUV3_COLORSPACE_UNKNOWN);
 559                 /* Enable local alpha on partial plane */
 560                 switch (state->fb->format->format) {
 561                 case DRM_FORMAT_ARGB1555:
 562                 case DRM_FORMAT_ABGR1555:
 563                 case DRM_FORMAT_RGBA5551:
 564                 case DRM_FORMAT_BGRA5551:
 565                 case DRM_FORMAT_ARGB4444:
 566                 case DRM_FORMAT_ARGB8888:
 567                 case DRM_FORMAT_ABGR8888:
 568                 case DRM_FORMAT_RGBA8888:
 569                 case DRM_FORMAT_BGRA8888:
 570                 case DRM_FORMAT_RGB565_A8:
 571                 case DRM_FORMAT_BGR565_A8:
 572                 case DRM_FORMAT_RGB888_A8:
 573                 case DRM_FORMAT_BGR888_A8:
 574                 case DRM_FORMAT_RGBX8888_A8:
 575                 case DRM_FORMAT_BGRX8888_A8:
 576                         ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
 577                         break;
 578                 default:
 579                         ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
 580                         break;
 581                 }
 582         }
 583
 584         ipu_dmfc_config_wait4eot(ipu_plane->dmfc, drm_rect_width(dst));
 585
 586         ipu_cpmem_zero(ipu_plane->ipu_ch);
 587         ipu_cpmem_set_resolution(ipu_plane->ipu_ch,
 588                                  drm_rect_width(&state->src) >> 16,
 589                                  drm_rect_height(&state->src) >> 16);
 590         ipu_cpmem_set_fmt(ipu_plane->ipu_ch, state->fb->format->format);
 591         ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
 592         ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
 593         ipu_cpmem_set_stride(ipu_plane->ipu_ch, state->fb->pitches[0]);
 594         ipu_cpmem_set_axi_id(ipu_plane->ipu_ch, axi_id);
 595         switch (fb->format->format) {
 596         case DRM_FORMAT_YUV420:
 597         case DRM_FORMAT_YVU420:
 598         case DRM_FORMAT_YUV422:
 599         case DRM_FORMAT_YVU422:
 600         case DRM_FORMAT_YUV444:
 601         case DRM_FORMAT_YVU444:
 602                 ubo = drm_plane_state_to_ubo(state);
 603                 vbo = drm_plane_state_to_vbo(state);
 604                 if (fb->format->format == DRM_FORMAT_YVU420 ||
 605                     fb->format->format == DRM_FORMAT_YVU422 ||
 606                     fb->format->format == DRM_FORMAT_YVU444)
 607                         swap(ubo, vbo);
 608
 609                 ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
 610                                               fb->pitches[1], ubo, vbo);
 611
 612                 dev_dbg(ipu_plane->base.dev->dev,
 613                         "phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
 614                         state->src.x1 >> 16, state->src.y1 >> 16);
 615                 break;
 616         case DRM_FORMAT_NV12:
 617         case DRM_FORMAT_NV16:
 618                 ubo = drm_plane_state_to_ubo(state);
 619
 620                 ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
 621                                               fb->pitches[1], ubo, ubo);
 622
 623                 dev_dbg(ipu_plane->base.dev->dev,
 624                         "phy = %lu %lu, x = %d, y = %d", eba, ubo,
 625                         state->src.x1 >> 16, state->src.y1 >> 16);
 626                 break;
 627         case DRM_FORMAT_RGB565_A8:
 628         case DRM_FORMAT_BGR565_A8:
 629         case DRM_FORMAT_RGB888_A8:
 630         case DRM_FORMAT_BGR888_A8:
 631         case DRM_FORMAT_RGBX8888_A8:
 632         case DRM_FORMAT_BGRX8888_A8:
 633                 alpha_eba = drm_plane_state_to_eba(state, 1);
 634
 635                 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu %lu, x = %d, y = %d",
 636                         eba, alpha_eba, state->src.x1 >> 16, state->src.y1 >> 16);
 637
 638                 ipu_cpmem_set_burstsize(ipu_plane->ipu_ch, 16);
 639
 640                 ipu_cpmem_zero(ipu_plane->alpha_ch);
 641                 ipu_cpmem_set_resolution(ipu_plane->alpha_ch,
 642                                          drm_rect_width(&state->src) >> 16,
 643                                          drm_rect_height(&state->src) >> 16);
 644                 ipu_cpmem_set_format_passthrough(ipu_plane->alpha_ch, 8);
 645                 ipu_cpmem_set_high_priority(ipu_plane->alpha_ch);
 646                 ipu_idmac_set_double_buffer(ipu_plane->alpha_ch, 1);
 647                 ipu_cpmem_set_stride(ipu_plane->alpha_ch,
 648                                      state->fb->pitches[1]);
 649                 ipu_cpmem_set_burstsize(ipu_plane->alpha_ch, 16);
 650                 ipu_cpmem_set_buffer(ipu_plane->alpha_ch, 0, alpha_eba);
 651                 ipu_cpmem_set_buffer(ipu_plane->alpha_ch, 1, alpha_eba);
 652                 break;
 653         default:
 654                 dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
 655                         eba, state->src.x1 >> 16, state->src.y1 >> 16);
 656                 break;
 657         }
 658         ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
 659         ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
 660         ipu_plane_enable(ipu_plane);
 661 }
 662
 663 static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
 664         .prepare_fb = drm_fb_cma_prepare_fb,
 665         .atomic_check = ipu_plane_atomic_check,
 666         .atomic_disable = ipu_plane_atomic_disable,
 667         .atomic_update = ipu_plane_atomic_update,
 668 };
 669
 670 int ipu_planes_assign_pre(struct drm_device *dev,
 671                           struct drm_atomic_state *state)
 672 {
 673         struct drm_plane_state *plane_state;
 674         struct drm_plane *plane;
 675         int available_pres = ipu_prg_max_active_channels();
 676         int i;
 677
 678         for_each_plane_in_state(state, plane, plane_state, i) {
 679                 struct ipu_plane_state *ipu_state =
 680                                 to_ipu_plane_state(plane_state);
 681                 struct ipu_plane *ipu_plane = to_ipu_plane(plane);
 682
 683                 if (ipu_prg_present(ipu_plane->ipu) && available_pres &&
 684                     plane_state->fb &&
 685                     ipu_prg_format_supported(ipu_plane->ipu,
 686                                              plane_state->fb->format->format,
 687                                              plane_state->fb->modifier)) {
 688                         ipu_state->use_pre = true;
 689                         available_pres--;
 690                 } else {
 691                         ipu_state->use_pre = false;
 692                 }
 693         }
 694
 695         return 0;
 696 }
 697 EXPORT_SYMBOL_GPL(ipu_planes_assign_pre);
 698
 699 struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
 700                                  int dma, int dp, unsigned int possible_crtcs,
 701                                  enum drm_plane_type type)
 702 {
 703         struct ipu_plane *ipu_plane;
 704         int ret;
 705
 706         DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
 707                       dma, dp, possible_crtcs);
 708
 709         ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
 710         if (!ipu_plane) {
 711                 DRM_ERROR("failed to allocate plane\n");
 712                 return ERR_PTR(-ENOMEM);
 713         }
 714
 715         ipu_plane->ipu = ipu;
 716         ipu_plane->dma = dma;
 717         ipu_plane->dp_flow = dp;
 718
 719         ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
 720                                        &ipu_plane_funcs, ipu_plane_formats,
 721                                        ARRAY_SIZE(ipu_plane_formats), type,
 722                                        NULL);
 723         if (ret) {
 724                 DRM_ERROR("failed to initialize plane\n");
 725                 kfree(ipu_plane);
 726                 return ERR_PTR(ret);
 727         }
 728
 729         drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);
 730
 731         return ipu_plane;
 732 }