drivers/gpu/drm/mediatek/mtk_drm_crtc.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2015 MediaTek Inc.
   4  */
   5
   6 #include <linux/clk.h>
   7 #include <linux/dma-mapping.h>
   8 #include <linux/mailbox_controller.h>
   9 #include <linux/of.h>
  10 #include <linux/pm_runtime.h>
  11 #include <linux/soc/mediatek/mtk-cmdq.h>
  12 #include <linux/soc/mediatek/mtk-mmsys.h>
  13 #include <linux/soc/mediatek/mtk-mutex.h>
  14
  15 #include <asm/barrier.h>
  16
  17 #include <drm/drm_atomic.h>
  18 #include <drm/drm_atomic_helper.h>
  19 #include <drm/drm_probe_helper.h>
  20 #include <drm/drm_vblank.h>
  21
  22 #include "mtk_drm_drv.h"
  23 #include "mtk_drm_crtc.h"
  24 #include "mtk_drm_ddp_comp.h"
  25 #include "mtk_drm_gem.h"
  26 #include "mtk_drm_plane.h"
  27
  28 /*
  29  * struct mtk_drm_crtc - MediaTek specific crtc structure.
  30  * @base: crtc object.
  31  * @enabled: records whether crtc_enable succeeded
  32  * @planes: array of 4 drm_plane structures, one for each overlay plane
  33  * @pending_planes: whether any plane has pending changes to be applied
  34  * @mmsys_dev: pointer to the mmsys device for configuration registers
  35  * @mutex: handle to one of the ten disp_mutex streams
  36  * @ddp_comp_nr: number of components in ddp_comp
  37  * @ddp_comp: array of pointers the mtk_ddp_comp structures used by this crtc
  38  *
  39  * TODO: Needs update: this header is missing a bunch of member descriptions.
  40  */
  41 struct mtk_drm_crtc {
  42         struct drm_crtc                 base;
  43         bool                            enabled;
  44
  45         bool                            pending_needs_vblank;
  46         struct drm_pending_vblank_event *event;
  47
  48         struct drm_plane                *planes;
  49         unsigned int                    layer_nr;
  50         bool                            pending_planes;
  51         bool                            pending_async_planes;
  52
  53 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
  54         struct cmdq_client              cmdq_client;
  55         struct cmdq_pkt                 cmdq_handle;
  56         u32                             cmdq_event;
  57         u32                             cmdq_vblank_cnt;
  58         wait_queue_head_t               cb_blocking_queue;
  59 #endif
  60
  61         struct device                   *mmsys_dev;
  62         struct device                   *dma_dev;
  63         struct mtk_mutex                *mutex;
  64         unsigned int                    ddp_comp_nr;
  65         struct mtk_ddp_comp             **ddp_comp;
  66         unsigned int                    num_conn_routes;
  67         const struct mtk_drm_route      *conn_routes;
  68
  69         /* lock for display hardware access */
  70         struct mutex                    hw_lock;
  71         bool                            config_updating;
  72 };
  73
  74 struct mtk_crtc_state {
  75         struct drm_crtc_state           base;
  76
  77         bool                            pending_config;
  78         unsigned int                    pending_width;
  79         unsigned int                    pending_height;
  80         unsigned int                    pending_vrefresh;
  81 };
  82
  83 static inline struct mtk_drm_crtc *to_mtk_crtc(struct drm_crtc *c)
  84 {
  85         return container_of(c, struct mtk_drm_crtc, base);
  86 }
  87
  88 static inline struct mtk_crtc_state *to_mtk_crtc_state(struct drm_crtc_state *s)
  89 {
  90         return container_of(s, struct mtk_crtc_state, base);
  91 }
  92
  93 static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
  94 {
  95         struct drm_crtc *crtc = &mtk_crtc->base;
  96         unsigned long flags;
  97
  98         spin_lock_irqsave(&crtc->dev->event_lock, flags);
  99         drm_crtc_send_vblank_event(crtc, mtk_crtc->event);
 100         drm_crtc_vblank_put(crtc);
 101         mtk_crtc->event = NULL;
 102         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 103 }
 104
 105 static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
 106 {
 107         drm_crtc_handle_vblank(&mtk_crtc->base);
 108         if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank) {
 109                 mtk_drm_crtc_finish_page_flip(mtk_crtc);
 110                 mtk_crtc->pending_needs_vblank = false;
 111         }
 112 }
 113
 114 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 115 static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
 116                                    size_t size)
 117 {
 118         struct device *dev;
 119         dma_addr_t dma_addr;
 120
 121         pkt->va_base = kzalloc(size, GFP_KERNEL);
 122         if (!pkt->va_base)
 123                 return -ENOMEM;
 124
 125         pkt->buf_size = size;
 126         pkt->cl = (void *)client;
 127
 128         dev = client->chan->mbox->dev;
 129         dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
 130                                   DMA_TO_DEVICE);
 131         if (dma_mapping_error(dev, dma_addr)) {
 132                 dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
 133                 kfree(pkt->va_base);
 134                 return -ENOMEM;
 135         }
 136
 137         pkt->pa_base = dma_addr;
 138
 139         return 0;
 140 }
 141
 142 static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
 143 {
 144         struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
 145
 146         dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
 147                          DMA_TO_DEVICE);
 148         kfree(pkt->va_base);
 149 }
 150 #endif
 151
 152 static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
 153 {
 154         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 155         int i;
 156
 157         mtk_mutex_put(mtk_crtc->mutex);
 158 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 159         mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
 160
 161         if (mtk_crtc->cmdq_client.chan) {
 162                 mbox_free_channel(mtk_crtc->cmdq_client.chan);
 163                 mtk_crtc->cmdq_client.chan = NULL;
 164         }
 165 #endif
 166
 167         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 168                 struct mtk_ddp_comp *comp;
 169
 170                 comp = mtk_crtc->ddp_comp[i];
 171                 mtk_ddp_comp_unregister_vblank_cb(comp);
 172         }
 173
 174         drm_crtc_cleanup(crtc);
 175 }
 176
 177 static void mtk_drm_crtc_reset(struct drm_crtc *crtc)
 178 {
 179         struct mtk_crtc_state *state;
 180
 181         if (crtc->state)
 182                 __drm_atomic_helper_crtc_destroy_state(crtc->state);
 183
 184         kfree(to_mtk_crtc_state(crtc->state));
 185         crtc->state = NULL;
 186
 187         state = kzalloc(sizeof(*state), GFP_KERNEL);
 188         if (state)
 189                 __drm_atomic_helper_crtc_reset(crtc, &state->base);
 190 }
 191
 192 static struct drm_crtc_state *mtk_drm_crtc_duplicate_state(struct drm_crtc *crtc)
 193 {
 194         struct mtk_crtc_state *state;
 195
 196         state = kmalloc(sizeof(*state), GFP_KERNEL);
 197         if (!state)
 198                 return NULL;
 199
 200         __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
 201
 202         WARN_ON(state->base.crtc != crtc);
 203         state->base.crtc = crtc;
 204         state->pending_config = false;
 205
 206         return &state->base;
 207 }
 208
 209 static void mtk_drm_crtc_destroy_state(struct drm_crtc *crtc,
 210                                        struct drm_crtc_state *state)
 211 {
 212         __drm_atomic_helper_crtc_destroy_state(state);
 213         kfree(to_mtk_crtc_state(state));
 214 }
 215
 216 static bool mtk_drm_crtc_mode_fixup(struct drm_crtc *crtc,
 217                                     const struct drm_display_mode *mode,
 218                                     struct drm_display_mode *adjusted_mode)
 219 {
 220         /* Nothing to do here, but this callback is mandatory. */
 221         return true;
 222 }
 223
 224 static void mtk_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
 225 {
 226         struct mtk_crtc_state *state = to_mtk_crtc_state(crtc->state);
 227
 228         state->pending_width = crtc->mode.hdisplay;
 229         state->pending_height = crtc->mode.vdisplay;
 230         state->pending_vrefresh = drm_mode_vrefresh(&crtc->mode);
 231         wmb();  /* Make sure the above parameters are set before update */
 232         state->pending_config = true;
 233 }
 234
 235 static int mtk_crtc_ddp_clk_enable(struct mtk_drm_crtc *mtk_crtc)
 236 {
 237         int ret;
 238         int i;
 239
 240         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 241                 ret = mtk_ddp_comp_clk_enable(mtk_crtc->ddp_comp[i]);
 242                 if (ret) {
 243                         DRM_ERROR("Failed to enable clock %d: %d\n", i, ret);
 244                         goto err;
 245                 }
 246         }
 247
 248         return 0;
 249 err:
 250         while (--i >= 0)
 251                 mtk_ddp_comp_clk_disable(mtk_crtc->ddp_comp[i]);
 252         return ret;
 253 }
 254
 255 static void mtk_crtc_ddp_clk_disable(struct mtk_drm_crtc *mtk_crtc)
 256 {
 257         int i;
 258
 259         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
 260                 mtk_ddp_comp_clk_disable(mtk_crtc->ddp_comp[i]);
 261 }
 262
 263 static
 264 struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
 265                                                 struct drm_plane *plane,
 266                                                 unsigned int *local_layer)
 267 {
 268         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 269         struct mtk_ddp_comp *comp;
 270         int i, count = 0;
 271         unsigned int local_index = plane - mtk_crtc->planes;
 272
 273         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 274                 comp = mtk_crtc->ddp_comp[i];
 275                 if (local_index < (count + mtk_ddp_comp_layer_nr(comp))) {
 276                         *local_layer = local_index - count;
 277                         return comp;
 278                 }
 279                 count += mtk_ddp_comp_layer_nr(comp);
 280         }
 281
 282         WARN(1, "Failed to find component for plane %d\n", plane->index);
 283         return NULL;
 284 }
 285
 286 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 287 static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
 288 {
 289         struct cmdq_cb_data *data = mssg;
 290         struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
 291         struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
 292         struct mtk_crtc_state *state;
 293         unsigned int i;
 294
 295         if (data->sta < 0)
 296                 return;
 297
 298         state = to_mtk_crtc_state(mtk_crtc->base.state);
 299
 300         state->pending_config = false;
 301
 302         if (mtk_crtc->pending_planes) {
 303                 for (i = 0; i < mtk_crtc->layer_nr; i++) {
 304                         struct drm_plane *plane = &mtk_crtc->planes[i];
 305                         struct mtk_plane_state *plane_state;
 306
 307                         plane_state = to_mtk_plane_state(plane->state);
 308
 309                         plane_state->pending.config = false;
 310                 }
 311                 mtk_crtc->pending_planes = false;
 312         }
 313
 314         if (mtk_crtc->pending_async_planes) {
 315                 for (i = 0; i < mtk_crtc->layer_nr; i++) {
 316                         struct drm_plane *plane = &mtk_crtc->planes[i];
 317                         struct mtk_plane_state *plane_state;
 318
 319                         plane_state = to_mtk_plane_state(plane->state);
 320
 321                         plane_state->pending.async_config = false;
 322                 }
 323                 mtk_crtc->pending_async_planes = false;
 324         }
 325
 326         mtk_crtc->cmdq_vblank_cnt = 0;
 327         wake_up(&mtk_crtc->cb_blocking_queue);
 328 }
 329 #endif
 330
 331 static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
 332 {
 333         struct drm_crtc *crtc = &mtk_crtc->base;
 334         struct drm_connector *connector;
 335         struct drm_encoder *encoder;
 336         struct drm_connector_list_iter conn_iter;
 337         unsigned int width, height, vrefresh, bpc = MTK_MAX_BPC;
 338         int ret;
 339         int i;
 340
 341         if (WARN_ON(!crtc->state))
 342                 return -EINVAL;
 343
 344         width = crtc->state->adjusted_mode.hdisplay;
 345         height = crtc->state->adjusted_mode.vdisplay;
 346         vrefresh = drm_mode_vrefresh(&crtc->state->adjusted_mode);
 347
 348         drm_for_each_encoder(encoder, crtc->dev) {
 349                 if (encoder->crtc != crtc)
 350                         continue;
 351
 352                 drm_connector_list_iter_begin(crtc->dev, &conn_iter);
 353                 drm_for_each_connector_iter(connector, &conn_iter) {
 354                         if (connector->encoder != encoder)
 355                                 continue;
 356                         if (connector->display_info.bpc != 0 &&
 357                             bpc > connector->display_info.bpc)
 358                                 bpc = connector->display_info.bpc;
 359                 }
 360                 drm_connector_list_iter_end(&conn_iter);
 361         }
 362
 363         ret = pm_runtime_resume_and_get(crtc->dev->dev);
 364         if (ret < 0) {
 365                 DRM_ERROR("Failed to enable power domain: %d\n", ret);
 366                 return ret;
 367         }
 368
 369         ret = mtk_mutex_prepare(mtk_crtc->mutex);
 370         if (ret < 0) {
 371                 DRM_ERROR("Failed to enable mutex clock: %d\n", ret);
 372                 goto err_pm_runtime_put;
 373         }
 374
 375         ret = mtk_crtc_ddp_clk_enable(mtk_crtc);
 376         if (ret < 0) {
 377                 DRM_ERROR("Failed to enable component clocks: %d\n", ret);
 378                 goto err_mutex_unprepare;
 379         }
 380
 381         for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
 382                 if (!mtk_ddp_comp_connect(mtk_crtc->ddp_comp[i], mtk_crtc->mmsys_dev,
 383                                           mtk_crtc->ddp_comp[i + 1]->id))
 384                         mtk_mmsys_ddp_connect(mtk_crtc->mmsys_dev,
 385                                               mtk_crtc->ddp_comp[i]->id,
 386                                               mtk_crtc->ddp_comp[i + 1]->id);
 387                 if (!mtk_ddp_comp_add(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
 388                         mtk_mutex_add_comp(mtk_crtc->mutex,
 389                                            mtk_crtc->ddp_comp[i]->id);
 390         }
 391         if (!mtk_ddp_comp_add(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
 392                 mtk_mutex_add_comp(mtk_crtc->mutex, mtk_crtc->ddp_comp[i]->id);
 393         mtk_mutex_enable(mtk_crtc->mutex);
 394
 395         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 396                 struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[i];
 397
 398                 if (i == 1)
 399                         mtk_ddp_comp_bgclr_in_on(comp);
 400
 401                 mtk_ddp_comp_config(comp, width, height, vrefresh, bpc, NULL);
 402                 mtk_ddp_comp_start(comp);
 403         }
 404
 405         /* Initially configure all planes */
 406         for (i = 0; i < mtk_crtc->layer_nr; i++) {
 407                 struct drm_plane *plane = &mtk_crtc->planes[i];
 408                 struct mtk_plane_state *plane_state;
 409                 struct mtk_ddp_comp *comp;
 410                 unsigned int local_layer;
 411
 412                 plane_state = to_mtk_plane_state(plane->state);
 413
 414                 /* should not enable layer before crtc enabled */
 415                 plane_state->pending.enable = false;
 416                 comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
 417                 if (comp)
 418                         mtk_ddp_comp_layer_config(comp, local_layer,
 419                                                   plane_state, NULL);
 420         }
 421
 422         return 0;
 423
 424 err_mutex_unprepare:
 425         mtk_mutex_unprepare(mtk_crtc->mutex);
 426 err_pm_runtime_put:
 427         pm_runtime_put(crtc->dev->dev);
 428         return ret;
 429 }
 430
 431 static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
 432 {
 433         struct drm_device *drm = mtk_crtc->base.dev;
 434         struct drm_crtc *crtc = &mtk_crtc->base;
 435         int i;
 436
 437         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 438                 mtk_ddp_comp_stop(mtk_crtc->ddp_comp[i]);
 439                 if (i == 1)
 440                         mtk_ddp_comp_bgclr_in_off(mtk_crtc->ddp_comp[i]);
 441         }
 442
 443         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
 444                 if (!mtk_ddp_comp_remove(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
 445                         mtk_mutex_remove_comp(mtk_crtc->mutex,
 446                                               mtk_crtc->ddp_comp[i]->id);
 447         mtk_mutex_disable(mtk_crtc->mutex);
 448         for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
 449                 if (!mtk_ddp_comp_disconnect(mtk_crtc->ddp_comp[i], mtk_crtc->mmsys_dev,
 450                                              mtk_crtc->ddp_comp[i + 1]->id))
 451                         mtk_mmsys_ddp_disconnect(mtk_crtc->mmsys_dev,
 452                                                  mtk_crtc->ddp_comp[i]->id,
 453                                                  mtk_crtc->ddp_comp[i + 1]->id);
 454                 if (!mtk_ddp_comp_remove(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
 455                         mtk_mutex_remove_comp(mtk_crtc->mutex,
 456                                               mtk_crtc->ddp_comp[i]->id);
 457         }
 458         if (!mtk_ddp_comp_remove(mtk_crtc->ddp_comp[i], mtk_crtc->mutex))
 459                 mtk_mutex_remove_comp(mtk_crtc->mutex, mtk_crtc->ddp_comp[i]->id);
 460         mtk_crtc_ddp_clk_disable(mtk_crtc);
 461         mtk_mutex_unprepare(mtk_crtc->mutex);
 462
 463         pm_runtime_put(drm->dev);
 464
 465         if (crtc->state->event && !crtc->state->active) {
 466                 spin_lock_irq(&crtc->dev->event_lock);
 467                 drm_crtc_send_vblank_event(crtc, crtc->state->event);
 468                 crtc->state->event = NULL;
 469                 spin_unlock_irq(&crtc->dev->event_lock);
 470         }
 471 }
 472
 473 static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 474                                 struct cmdq_pkt *cmdq_handle)
 475 {
 476         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 477         struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
 478         struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 479         unsigned int i;
 480         unsigned int local_layer;
 481
 482         /*
 483          * TODO: instead of updating the registers here, we should prepare
 484          * working registers in atomic_commit and let the hardware command
 485          * queue update module registers on vblank.
 486          */
 487         if (state->pending_config) {
 488                 mtk_ddp_comp_config(comp, state->pending_width,
 489                                     state->pending_height,
 490                                     state->pending_vrefresh, 0,
 491                                     cmdq_handle);
 492
 493                 if (!cmdq_handle)
 494                         state->pending_config = false;
 495         }
 496
 497         if (mtk_crtc->pending_planes) {
 498                 for (i = 0; i < mtk_crtc->layer_nr; i++) {
 499                         struct drm_plane *plane = &mtk_crtc->planes[i];
 500                         struct mtk_plane_state *plane_state;
 501
 502                         plane_state = to_mtk_plane_state(plane->state);
 503
 504                         if (!plane_state->pending.config)
 505                                 continue;
 506
 507                         comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
 508                                                           &local_layer);
 509
 510                         if (comp)
 511                                 mtk_ddp_comp_layer_config(comp, local_layer,
 512                                                           plane_state,
 513                                                           cmdq_handle);
 514                         if (!cmdq_handle)
 515                                 plane_state->pending.config = false;
 516                 }
 517
 518                 if (!cmdq_handle)
 519                         mtk_crtc->pending_planes = false;
 520         }
 521
 522         if (mtk_crtc->pending_async_planes) {
 523                 for (i = 0; i < mtk_crtc->layer_nr; i++) {
 524                         struct drm_plane *plane = &mtk_crtc->planes[i];
 525                         struct mtk_plane_state *plane_state;
 526
 527                         plane_state = to_mtk_plane_state(plane->state);
 528
 529                         if (!plane_state->pending.async_config)
 530                                 continue;
 531
 532                         comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
 533                                                           &local_layer);
 534
 535                         if (comp)
 536                                 mtk_ddp_comp_layer_config(comp, local_layer,
 537                                                           plane_state,
 538                                                           cmdq_handle);
 539                         if (!cmdq_handle)
 540                                 plane_state->pending.async_config = false;
 541                 }
 542
 543                 if (!cmdq_handle)
 544                         mtk_crtc->pending_async_planes = false;
 545         }
 546 }
 547
 548 static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
 549                                        bool needs_vblank)
 550 {
 551 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 552         struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
 553 #endif
 554         struct drm_crtc *crtc = &mtk_crtc->base;
 555         struct mtk_drm_private *priv = crtc->dev->dev_private;
 556         unsigned int pending_planes = 0, pending_async_planes = 0;
 557         int i;
 558
 559         mutex_lock(&mtk_crtc->hw_lock);
 560         mtk_crtc->config_updating = true;
 561         if (needs_vblank)
 562                 mtk_crtc->pending_needs_vblank = true;
 563
 564         for (i = 0; i < mtk_crtc->layer_nr; i++) {
 565                 struct drm_plane *plane = &mtk_crtc->planes[i];
 566                 struct mtk_plane_state *plane_state;
 567
 568                 plane_state = to_mtk_plane_state(plane->state);
 569                 if (plane_state->pending.dirty) {
 570                         plane_state->pending.config = true;
 571                         plane_state->pending.dirty = false;
 572                         pending_planes |= BIT(i);
 573                 } else if (plane_state->pending.async_dirty) {
 574                         plane_state->pending.async_config = true;
 575                         plane_state->pending.async_dirty = false;
 576                         pending_async_planes |= BIT(i);
 577                 }
 578         }
 579         if (pending_planes)
 580                 mtk_crtc->pending_planes = true;
 581         if (pending_async_planes)
 582                 mtk_crtc->pending_async_planes = true;
 583
 584         if (priv->data->shadow_register) {
 585                 mtk_mutex_acquire(mtk_crtc->mutex);
 586                 mtk_crtc_ddp_config(crtc, NULL);
 587                 mtk_mutex_release(mtk_crtc->mutex);
 588         }
 589 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 590         if (mtk_crtc->cmdq_client.chan) {
 591                 mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
 592                 cmdq_handle->cmd_buf_size = 0;
 593                 cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
 594                 cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
 595                 mtk_crtc_ddp_config(crtc, cmdq_handle);
 596                 cmdq_pkt_finalize(cmdq_handle);
 597                 dma_sync_single_for_device(mtk_crtc->cmdq_client.chan->mbox->dev,
 598                                            cmdq_handle->pa_base,
 599                                            cmdq_handle->cmd_buf_size,
 600                                            DMA_TO_DEVICE);
 601                 /*
 602                  * CMDQ command should execute in next 3 vblank.
 603                  * One vblank interrupt before send message (occasionally)
 604                  * and one vblank interrupt after cmdq done,
 605                  * so it's timeout after 3 vblank interrupt.
 606                  * If it fail to execute in next 3 vblank, timeout happen.
 607                  */
 608                 mtk_crtc->cmdq_vblank_cnt = 3;
 609
 610                 mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
 611                 mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
 612         }
 613 #endif
 614         mtk_crtc->config_updating = false;
 615         mutex_unlock(&mtk_crtc->hw_lock);
 616 }
 617
 618 static void mtk_crtc_ddp_irq(void *data)
 619 {
 620         struct drm_crtc *crtc = data;
 621         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 622         struct mtk_drm_private *priv = crtc->dev->dev_private;
 623
 624 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 625         if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
 626                 mtk_crtc_ddp_config(crtc, NULL);
 627         else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
 628                 DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
 629                           drm_crtc_index(&mtk_crtc->base));
 630 #else
 631         if (!priv->data->shadow_register)
 632                 mtk_crtc_ddp_config(crtc, NULL);
 633 #endif
 634         mtk_drm_finish_page_flip(mtk_crtc);
 635 }
 636
 637 static int mtk_drm_crtc_enable_vblank(struct drm_crtc *crtc)
 638 {
 639         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 640         struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 641
 642         mtk_ddp_comp_enable_vblank(comp);
 643
 644         return 0;
 645 }
 646
 647 static void mtk_drm_crtc_disable_vblank(struct drm_crtc *crtc)
 648 {
 649         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 650         struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 651
 652         mtk_ddp_comp_disable_vblank(comp);
 653 }
 654
 655 static void mtk_drm_crtc_update_output(struct drm_crtc *crtc,
 656                                        struct drm_atomic_state *state)
 657 {
 658         int crtc_index = drm_crtc_index(crtc);
 659         int i;
 660         struct device *dev;
 661         struct drm_crtc_state *crtc_state = state->crtcs[crtc_index].new_state;
 662         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 663         struct mtk_drm_private *priv;
 664         unsigned int encoder_mask = crtc_state->encoder_mask;
 665
 666         if (!crtc_state->connectors_changed)
 667                 return;
 668
 669         if (!mtk_crtc->num_conn_routes)
 670                 return;
 671
 672         priv = ((struct mtk_drm_private *)crtc->dev->dev_private)->all_drm_private[crtc_index];
 673         dev = priv->dev;
 674
 675         dev_dbg(dev, "connector change:%d, encoder mask:0x%x for crtc:%d\n",
 676                 crtc_state->connectors_changed, encoder_mask, crtc_index);
 677
 678         for (i = 0; i < mtk_crtc->num_conn_routes; i++) {
 679                 unsigned int comp_id = mtk_crtc->conn_routes[i].route_ddp;
 680                 struct mtk_ddp_comp *comp = &priv->ddp_comp[comp_id];
 681
 682                 if (comp->encoder_index >= 0 &&
 683                     (encoder_mask & BIT(comp->encoder_index))) {
 684                         mtk_crtc->ddp_comp[mtk_crtc->ddp_comp_nr - 1] = comp;
 685                         dev_dbg(dev, "Add comp_id: %d at path index %d\n",
 686                                 comp->id, mtk_crtc->ddp_comp_nr - 1);
 687                         break;
 688                 }
 689         }
 690 }
 691
 692 int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane,
 693                              struct mtk_plane_state *state)
 694 {
 695         unsigned int local_layer;
 696         struct mtk_ddp_comp *comp;
 697
 698         comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
 699         if (comp)
 700                 return mtk_ddp_comp_layer_check(comp, local_layer, state);
 701         return 0;
 702 }
 703
 704 void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
 705                                struct drm_atomic_state *state)
 706 {
 707         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 708
 709         if (!mtk_crtc->enabled)
 710                 return;
 711
 712         mtk_drm_crtc_update_config(mtk_crtc, false);
 713 }
 714
 715 static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
 716                                        struct drm_atomic_state *state)
 717 {
 718         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 719         struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 720         int ret;
 721
 722         DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
 723
 724         ret = pm_runtime_resume_and_get(comp->dev);
 725         if (ret < 0) {
 726                 DRM_DEV_ERROR(comp->dev, "Failed to enable power domain: %d\n", ret);
 727                 return;
 728         }
 729
 730         mtk_drm_crtc_update_output(crtc, state);
 731
 732         ret = mtk_crtc_ddp_hw_init(mtk_crtc);
 733         if (ret) {
 734                 pm_runtime_put(comp->dev);
 735                 return;
 736         }
 737
 738         drm_crtc_vblank_on(crtc);
 739         mtk_crtc->enabled = true;
 740 }
 741
 742 static void mtk_drm_crtc_atomic_disable(struct drm_crtc *crtc,
 743                                         struct drm_atomic_state *state)
 744 {
 745         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 746         struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 747         int i, ret;
 748
 749         DRM_DEBUG_DRIVER("%s %d\n", __func__, crtc->base.id);
 750         if (!mtk_crtc->enabled)
 751                 return;
 752
 753         /* Set all pending plane state to disabled */
 754         for (i = 0; i < mtk_crtc->layer_nr; i++) {
 755                 struct drm_plane *plane = &mtk_crtc->planes[i];
 756                 struct mtk_plane_state *plane_state;
 757
 758                 plane_state = to_mtk_plane_state(plane->state);
 759                 plane_state->pending.enable = false;
 760                 plane_state->pending.config = true;
 761         }
 762         mtk_crtc->pending_planes = true;
 763
 764         mtk_drm_crtc_update_config(mtk_crtc, false);
 765 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 766         /* Wait for planes to be disabled by cmdq */
 767         if (mtk_crtc->cmdq_client.chan)
 768                 wait_event_timeout(mtk_crtc->cb_blocking_queue,
 769                                    mtk_crtc->cmdq_vblank_cnt == 0,
 770                                    msecs_to_jiffies(500));
 771 #endif
 772         /* Wait for planes to be disabled */
 773         drm_crtc_wait_one_vblank(crtc);
 774
 775         drm_crtc_vblank_off(crtc);
 776         mtk_crtc_ddp_hw_fini(mtk_crtc);
 777         ret = pm_runtime_put(comp->dev);
 778         if (ret < 0)
 779                 DRM_DEV_ERROR(comp->dev, "Failed to disable power domain: %d\n", ret);
 780
 781         mtk_crtc->enabled = false;
 782 }
 783
 784 static void mtk_drm_crtc_atomic_begin(struct drm_crtc *crtc,
 785                                       struct drm_atomic_state *state)
 786 {
 787         struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
 788                                                                           crtc);
 789         struct mtk_crtc_state *mtk_crtc_state = to_mtk_crtc_state(crtc_state);
 790         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 791         unsigned long flags;
 792
 793         if (mtk_crtc->event && mtk_crtc_state->base.event)
 794                 DRM_ERROR("new event while there is still a pending event\n");
 795
 796         if (mtk_crtc_state->base.event) {
 797                 mtk_crtc_state->base.event->pipe = drm_crtc_index(crtc);
 798                 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
 799
 800                 spin_lock_irqsave(&crtc->dev->event_lock, flags);
 801                 mtk_crtc->event = mtk_crtc_state->base.event;
 802                 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 803
 804                 mtk_crtc_state->base.event = NULL;
 805         }
 806 }
 807
 808 static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc,
 809                                       struct drm_atomic_state *state)
 810 {
 811         struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
 812         int i;
 813
 814         if (crtc->state->color_mgmt_changed)
 815                 for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 816                         mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state);
 817                         mtk_ddp_ctm_set(mtk_crtc->ddp_comp[i], crtc->state);
 818                 }
 819         mtk_drm_crtc_update_config(mtk_crtc, !!mtk_crtc->event);
 820 }
 821
 822 static const struct drm_crtc_funcs mtk_crtc_funcs = {
 823         .set_config             = drm_atomic_helper_set_config,
 824         .page_flip              = drm_atomic_helper_page_flip,
 825         .destroy                = mtk_drm_crtc_destroy,
 826         .reset                  = mtk_drm_crtc_reset,
 827         .atomic_duplicate_state = mtk_drm_crtc_duplicate_state,
 828         .atomic_destroy_state   = mtk_drm_crtc_destroy_state,
 829         .enable_vblank          = mtk_drm_crtc_enable_vblank,
 830         .disable_vblank         = mtk_drm_crtc_disable_vblank,
 831 };
 832
 833 static const struct drm_crtc_helper_funcs mtk_crtc_helper_funcs = {
 834         .mode_fixup     = mtk_drm_crtc_mode_fixup,
 835         .mode_set_nofb  = mtk_drm_crtc_mode_set_nofb,
 836         .atomic_begin   = mtk_drm_crtc_atomic_begin,
 837         .atomic_flush   = mtk_drm_crtc_atomic_flush,
 838         .atomic_enable  = mtk_drm_crtc_atomic_enable,
 839         .atomic_disable = mtk_drm_crtc_atomic_disable,
 840 };
 841
 842 static int mtk_drm_crtc_init(struct drm_device *drm,
 843                              struct mtk_drm_crtc *mtk_crtc,
 844                              unsigned int pipe)
 845 {
 846         struct drm_plane *primary = NULL;
 847         struct drm_plane *cursor = NULL;
 848         int i, ret;
 849
 850         for (i = 0; i < mtk_crtc->layer_nr; i++) {
 851                 if (mtk_crtc->planes[i].type == DRM_PLANE_TYPE_PRIMARY)
 852                         primary = &mtk_crtc->planes[i];
 853                 else if (mtk_crtc->planes[i].type == DRM_PLANE_TYPE_CURSOR)
 854                         cursor = &mtk_crtc->planes[i];
 855         }
 856
 857         ret = drm_crtc_init_with_planes(drm, &mtk_crtc->base, primary, cursor,
 858                                         &mtk_crtc_funcs, NULL);
 859         if (ret)
 860                 goto err_cleanup_crtc;
 861
 862         drm_crtc_helper_add(&mtk_crtc->base, &mtk_crtc_helper_funcs);
 863
 864         return 0;
 865
 866 err_cleanup_crtc:
 867         drm_crtc_cleanup(&mtk_crtc->base);
 868         return ret;
 869 }
 870
 871 static int mtk_drm_crtc_num_comp_planes(struct mtk_drm_crtc *mtk_crtc,
 872                                         int comp_idx)
 873 {
 874         struct mtk_ddp_comp *comp;
 875
 876         if (comp_idx > 1)
 877                 return 0;
 878
 879         comp = mtk_crtc->ddp_comp[comp_idx];
 880         if (!comp->funcs)
 881                 return 0;
 882
 883         if (comp_idx == 1 && !comp->funcs->bgclr_in_on)
 884                 return 0;
 885
 886         return mtk_ddp_comp_layer_nr(comp);
 887 }
 888
 889 static inline
 890 enum drm_plane_type mtk_drm_crtc_plane_type(unsigned int plane_idx,
 891                                             unsigned int num_planes)
 892 {
 893         if (plane_idx == 0)
 894                 return DRM_PLANE_TYPE_PRIMARY;
 895         else if (plane_idx == (num_planes - 1))
 896                 return DRM_PLANE_TYPE_CURSOR;
 897         else
 898                 return DRM_PLANE_TYPE_OVERLAY;
 899
 900 }
 901
 902 static int mtk_drm_crtc_init_comp_planes(struct drm_device *drm_dev,
 903                                          struct mtk_drm_crtc *mtk_crtc,
 904                                          int comp_idx, int pipe)
 905 {
 906         int num_planes = mtk_drm_crtc_num_comp_planes(mtk_crtc, comp_idx);
 907         struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[comp_idx];
 908         int i, ret;
 909
 910         for (i = 0; i < num_planes; i++) {
 911                 ret = mtk_plane_init(drm_dev,
 912                                 &mtk_crtc->planes[mtk_crtc->layer_nr],
 913                                 BIT(pipe),
 914                                 mtk_drm_crtc_plane_type(mtk_crtc->layer_nr,
 915                                                         num_planes),
 916                                 mtk_ddp_comp_supported_rotations(comp),
 917                                 mtk_ddp_comp_get_formats(comp),
 918                                 mtk_ddp_comp_get_num_formats(comp));
 919                 if (ret)
 920                         return ret;
 921
 922                 mtk_crtc->layer_nr++;
 923         }
 924         return 0;
 925 }
 926
 927 struct device *mtk_drm_crtc_dma_dev_get(struct drm_crtc *crtc)
 928 {
 929         struct mtk_drm_crtc *mtk_crtc = NULL;
 930
 931         if (!crtc)
 932                 return NULL;
 933
 934         mtk_crtc = to_mtk_crtc(crtc);
 935         if (!mtk_crtc)
 936                 return NULL;
 937
 938         return mtk_crtc->dma_dev;
 939 }
 940
 941 int mtk_drm_crtc_create(struct drm_device *drm_dev,
 942                         const unsigned int *path, unsigned int path_len,
 943                         int priv_data_index, const struct mtk_drm_route *conn_routes,
 944                         unsigned int num_conn_routes)
 945 {
 946         struct mtk_drm_private *priv = drm_dev->dev_private;
 947         struct device *dev = drm_dev->dev;
 948         struct mtk_drm_crtc *mtk_crtc;
 949         unsigned int num_comp_planes = 0;
 950         int ret;
 951         int i;
 952         bool has_ctm = false;
 953         uint gamma_lut_size = 0;
 954         struct drm_crtc *tmp;
 955         int crtc_i = 0;
 956
 957         if (!path)
 958                 return 0;
 959
 960         priv = priv->all_drm_private[priv_data_index];
 961
 962         drm_for_each_crtc(tmp, drm_dev)
 963                 crtc_i++;
 964
 965         for (i = 0; i < path_len; i++) {
 966                 enum mtk_ddp_comp_id comp_id = path[i];
 967                 struct device_node *node;
 968                 struct mtk_ddp_comp *comp;
 969
 970                 node = priv->comp_node[comp_id];
 971                 comp = &priv->ddp_comp[comp_id];
 972
 973                 /* Not all drm components have a DTS device node, such as ovl_adaptor,
 974                  * which is the drm bring up sub driver
 975                  */
 976                 if (!node && comp_id != DDP_COMPONENT_DRM_OVL_ADAPTOR) {
 977                         dev_info(dev,
 978                                 "Not creating crtc %d because component %d is disabled or missing\n",
 979                                 crtc_i, comp_id);
 980                         return 0;
 981                 }
 982
 983                 if (!comp->dev) {
 984                         dev_err(dev, "Component %pOF not initialized\n", node);
 985                         return -ENODEV;
 986                 }
 987         }
 988
 989         mtk_crtc = devm_kzalloc(dev, sizeof(*mtk_crtc), GFP_KERNEL);
 990         if (!mtk_crtc)
 991                 return -ENOMEM;
 992
 993         mtk_crtc->mmsys_dev = priv->mmsys_dev;
 994         mtk_crtc->ddp_comp_nr = path_len;
 995         mtk_crtc->ddp_comp = devm_kmalloc_array(dev,
 996                                                 mtk_crtc->ddp_comp_nr + (conn_routes ? 1 : 0),
 997                                                 sizeof(*mtk_crtc->ddp_comp),
 998                                                 GFP_KERNEL);
 999         if (!mtk_crtc->ddp_comp)
1000                 return -ENOMEM;
1001
1002         mtk_crtc->mutex = mtk_mutex_get(priv->mutex_dev);
1003         if (IS_ERR(mtk_crtc->mutex)) {
1004                 ret = PTR_ERR(mtk_crtc->mutex);
1005                 dev_err(dev, "Failed to get mutex: %d\n", ret);
1006                 return ret;
1007         }
1008
1009         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
1010                 unsigned int comp_id = path[i];
1011                 struct mtk_ddp_comp *comp;
1012
1013                 comp = &priv->ddp_comp[comp_id];
1014                 mtk_crtc->ddp_comp[i] = comp;
1015
1016                 if (comp->funcs) {
1017                         if (comp->funcs->gamma_set && comp->funcs->gamma_get_lut_size) {
1018                                 unsigned int lut_sz = mtk_ddp_gamma_get_lut_size(comp);
1019
1020                                 if (lut_sz)
1021                                         gamma_lut_size = lut_sz;
1022                         }
1023
1024                         if (comp->funcs->ctm_set)
1025                                 has_ctm = true;
1026                 }
1027
1028                 mtk_ddp_comp_register_vblank_cb(comp, mtk_crtc_ddp_irq,
1029                                                 &mtk_crtc->base);
1030         }
1031
1032         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
1033                 num_comp_planes += mtk_drm_crtc_num_comp_planes(mtk_crtc, i);
1034
1035         mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes,
1036                                         sizeof(struct drm_plane), GFP_KERNEL);
1037         if (!mtk_crtc->planes)
1038                 return -ENOMEM;
1039
1040         for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
1041                 ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,
1042                                                     crtc_i);
1043                 if (ret)
1044                         return ret;
1045         }
1046
1047         /*
1048          * Default to use the first component as the dma dev.
1049          * In the case of ovl_adaptor sub driver, it needs to use the
1050          * dma_dev_get function to get representative dma dev.
1051          */
1052         mtk_crtc->dma_dev = mtk_ddp_comp_dma_dev_get(&priv->ddp_comp[path[0]]);
1053
1054         ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, crtc_i);
1055         if (ret < 0)
1056                 return ret;
1057
1058         if (gamma_lut_size)
1059                 drm_mode_crtc_set_gamma_size(&mtk_crtc->base, gamma_lut_size);
1060         drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, has_ctm, gamma_lut_size);
1061         mutex_init(&mtk_crtc->hw_lock);
1062
1063 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
1064         i = priv->mbox_index++;
1065         mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
1066         mtk_crtc->cmdq_client.client.tx_block = false;
1067         mtk_crtc->cmdq_client.client.knows_txdone = true;
1068         mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
1069         mtk_crtc->cmdq_client.chan =
1070                         mbox_request_channel(&mtk_crtc->cmdq_client.client, i);
1071         if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
1072                 dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
1073                         drm_crtc_index(&mtk_crtc->base));
1074                 mtk_crtc->cmdq_client.chan = NULL;
1075         }
1076
1077         if (mtk_crtc->cmdq_client.chan) {
1078                 ret = of_property_read_u32_index(priv->mutex_node,
1079                                                  "mediatek,gce-events",
1080                                                  i,
1081                                                  &mtk_crtc->cmdq_event);
1082                 if (ret) {
1083                         dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
1084                                 drm_crtc_index(&mtk_crtc->base));
1085                         mbox_free_channel(mtk_crtc->cmdq_client.chan);
1086                         mtk_crtc->cmdq_client.chan = NULL;
1087                 } else {
1088                         ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
1089                                                       &mtk_crtc->cmdq_handle,
1090                                                       PAGE_SIZE);
1091                         if (ret) {
1092                                 dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
1093                                         drm_crtc_index(&mtk_crtc->base));
1094                                 mbox_free_channel(mtk_crtc->cmdq_client.chan);
1095                                 mtk_crtc->cmdq_client.chan = NULL;
1096                         }
1097                 }
1098
1099                 /* for sending blocking cmd in crtc disable */
1100                 init_waitqueue_head(&mtk_crtc->cb_blocking_queue);
1101         }
1102 #endif
1103
1104         if (conn_routes) {
1105                 for (i = 0; i < num_conn_routes; i++) {
1106                         unsigned int comp_id = conn_routes[i].route_ddp;
1107                         struct device_node *node = priv->comp_node[comp_id];
1108                         struct mtk_ddp_comp *comp = &priv->ddp_comp[comp_id];
1109
1110                         if (!comp->dev) {
1111                                 dev_dbg(dev, "comp_id:%d, Component %pOF not initialized\n",
1112                                         comp_id, node);
1113                                 /* mark encoder_index to -1, if route comp device is not enabled */
1114                                 comp->encoder_index = -1;
1115                                 continue;
1116                         }
1117
1118                         mtk_ddp_comp_encoder_index_set(&priv->ddp_comp[comp_id]);
1119                 }
1120
1121                 mtk_crtc->num_conn_routes = num_conn_routes;
1122                 mtk_crtc->conn_routes = conn_routes;
1123
1124                 /* increase ddp_comp_nr at the end of mtk_drm_crtc_create */
1125                 mtk_crtc->ddp_comp_nr++;
1126         }
1127
1128         return 0;
1129 }