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