1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2015 MediaTek Inc. 4 * Author: YT SHEN <yt.shen@mediatek.com> 5 */ 6 7 #include <linux/component.h> 8 #include <linux/iommu.h> 9 #include <linux/module.h> 10 #include <linux/of_address.h> 11 #include <linux/of_platform.h> 12 #include <linux/pm_runtime.h> 13 #include <linux/dma-mapping.h> 14 15 #include <drm/drm_atomic.h> 16 #include <drm/drm_atomic_helper.h> 17 #include <drm/drm_drv.h> 18 #include <drm/drm_fb_helper.h> 19 #include <drm/drm_fourcc.h> 20 #include <drm/drm_gem.h> 21 #include <drm/drm_gem_cma_helper.h> 22 #include <drm/drm_gem_framebuffer_helper.h> 23 #include <drm/drm_of.h> 24 #include <drm/drm_probe_helper.h> 25 #include <drm/drm_vblank.h> 26 27 #include "mtk_drm_crtc.h" 28 #include "mtk_drm_ddp_comp.h" 29 #include "mtk_drm_drv.h" 30 #include "mtk_drm_gem.h" 31 32 #define DRIVER_NAME "mediatek" 33 #define DRIVER_DESC "Mediatek SoC DRM" 34 #define DRIVER_DATE "20150513" 35 #define DRIVER_MAJOR 1 36 #define DRIVER_MINOR 0 37 38 static const struct drm_mode_config_helper_funcs mtk_drm_mode_config_helpers = { 39 .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, 40 }; 41 42 static struct drm_framebuffer * 43 mtk_drm_mode_fb_create(struct drm_device *dev, 44 struct drm_file *file, 45 const struct drm_mode_fb_cmd2 *cmd) 46 { 47 const struct drm_format_info *info = drm_get_format_info(dev, cmd); 48 49 if (info->num_planes != 1) 50 return ERR_PTR(-EINVAL); 51 52 return drm_gem_fb_create(dev, file, cmd); 53 } 54 55 static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = { 56 .fb_create = mtk_drm_mode_fb_create, 57 .atomic_check = drm_atomic_helper_check, 58 .atomic_commit = drm_atomic_helper_commit, 59 }; 60 61 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = { 62 DDP_COMPONENT_OVL0, 63 DDP_COMPONENT_RDMA0, 64 DDP_COMPONENT_COLOR0, 65 DDP_COMPONENT_BLS, 66 DDP_COMPONENT_DSI0, 67 }; 68 69 static const enum mtk_ddp_comp_id mt2701_mtk_ddp_ext[] = { 70 DDP_COMPONENT_RDMA1, 71 DDP_COMPONENT_DPI0, 72 }; 73 74 static const enum mtk_ddp_comp_id mt7623_mtk_ddp_main[] = { 75 DDP_COMPONENT_OVL0, 76 DDP_COMPONENT_RDMA0, 77 DDP_COMPONENT_COLOR0, 78 DDP_COMPONENT_BLS, 79 DDP_COMPONENT_DPI0, 80 }; 81 82 static const enum mtk_ddp_comp_id mt7623_mtk_ddp_ext[] = { 83 DDP_COMPONENT_RDMA1, 84 DDP_COMPONENT_DSI0, 85 }; 86 87 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_main[] = { 88 DDP_COMPONENT_OVL0, 89 DDP_COMPONENT_COLOR0, 90 DDP_COMPONENT_AAL0, 91 DDP_COMPONENT_OD0, 92 DDP_COMPONENT_RDMA0, 93 DDP_COMPONENT_DPI0, 94 DDP_COMPONENT_PWM0, 95 }; 96 97 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_ext[] = { 98 DDP_COMPONENT_OVL1, 99 DDP_COMPONENT_COLOR1, 100 DDP_COMPONENT_AAL1, 101 DDP_COMPONENT_OD1, 102 DDP_COMPONENT_RDMA1, 103 DDP_COMPONENT_DPI1, 104 DDP_COMPONENT_PWM1, 105 }; 106 107 static const enum mtk_ddp_comp_id mt2712_mtk_ddp_third[] = { 108 DDP_COMPONENT_RDMA2, 109 DDP_COMPONENT_DSI3, 110 DDP_COMPONENT_PWM2, 111 }; 112 113 static enum mtk_ddp_comp_id mt8167_mtk_ddp_main[] = { 114 DDP_COMPONENT_OVL0, 115 DDP_COMPONENT_COLOR0, 116 DDP_COMPONENT_CCORR, 117 DDP_COMPONENT_AAL0, 118 DDP_COMPONENT_GAMMA, 119 DDP_COMPONENT_DITHER, 120 DDP_COMPONENT_RDMA0, 121 DDP_COMPONENT_DSI0, 122 }; 123 124 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = { 125 DDP_COMPONENT_OVL0, 126 DDP_COMPONENT_COLOR0, 127 DDP_COMPONENT_AAL0, 128 DDP_COMPONENT_OD0, 129 DDP_COMPONENT_RDMA0, 130 DDP_COMPONENT_UFOE, 131 DDP_COMPONENT_DSI0, 132 DDP_COMPONENT_PWM0, 133 }; 134 135 static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = { 136 DDP_COMPONENT_OVL1, 137 DDP_COMPONENT_COLOR1, 138 DDP_COMPONENT_GAMMA, 139 DDP_COMPONENT_RDMA1, 140 DDP_COMPONENT_DPI0, 141 }; 142 143 static const enum mtk_ddp_comp_id mt8183_mtk_ddp_main[] = { 144 DDP_COMPONENT_OVL0, 145 DDP_COMPONENT_OVL_2L0, 146 DDP_COMPONENT_RDMA0, 147 DDP_COMPONENT_COLOR0, 148 DDP_COMPONENT_CCORR, 149 DDP_COMPONENT_AAL0, 150 DDP_COMPONENT_GAMMA, 151 DDP_COMPONENT_DITHER, 152 DDP_COMPONENT_DSI0, 153 }; 154 155 static const enum mtk_ddp_comp_id mt8183_mtk_ddp_ext[] = { 156 DDP_COMPONENT_OVL_2L1, 157 DDP_COMPONENT_RDMA1, 158 DDP_COMPONENT_DPI0, 159 }; 160 161 static const enum mtk_ddp_comp_id mt8192_mtk_ddp_main[] = { 162 DDP_COMPONENT_OVL0, 163 DDP_COMPONENT_OVL_2L0, 164 DDP_COMPONENT_RDMA0, 165 DDP_COMPONENT_COLOR0, 166 DDP_COMPONENT_CCORR, 167 DDP_COMPONENT_AAL0, 168 DDP_COMPONENT_GAMMA, 169 DDP_COMPONENT_POSTMASK0, 170 DDP_COMPONENT_DITHER, 171 DDP_COMPONENT_DSI0, 172 }; 173 174 static const enum mtk_ddp_comp_id mt8192_mtk_ddp_ext[] = { 175 DDP_COMPONENT_OVL_2L2, 176 DDP_COMPONENT_RDMA4, 177 DDP_COMPONENT_DPI0, 178 }; 179 180 static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = { 181 .main_path = mt2701_mtk_ddp_main, 182 .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main), 183 .ext_path = mt2701_mtk_ddp_ext, 184 .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext), 185 .shadow_register = true, 186 }; 187 188 static const struct mtk_mmsys_driver_data mt7623_mmsys_driver_data = { 189 .main_path = mt7623_mtk_ddp_main, 190 .main_len = ARRAY_SIZE(mt7623_mtk_ddp_main), 191 .ext_path = mt7623_mtk_ddp_ext, 192 .ext_len = ARRAY_SIZE(mt7623_mtk_ddp_ext), 193 .shadow_register = true, 194 }; 195 196 static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = { 197 .main_path = mt2712_mtk_ddp_main, 198 .main_len = ARRAY_SIZE(mt2712_mtk_ddp_main), 199 .ext_path = mt2712_mtk_ddp_ext, 200 .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext), 201 .third_path = mt2712_mtk_ddp_third, 202 .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third), 203 }; 204 205 static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = { 206 .main_path = mt8167_mtk_ddp_main, 207 .main_len = ARRAY_SIZE(mt8167_mtk_ddp_main), 208 }; 209 210 static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { 211 .main_path = mt8173_mtk_ddp_main, 212 .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main), 213 .ext_path = mt8173_mtk_ddp_ext, 214 .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext), 215 }; 216 217 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = { 218 .main_path = mt8183_mtk_ddp_main, 219 .main_len = ARRAY_SIZE(mt8183_mtk_ddp_main), 220 .ext_path = mt8183_mtk_ddp_ext, 221 .ext_len = ARRAY_SIZE(mt8183_mtk_ddp_ext), 222 }; 223 224 static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = { 225 .main_path = mt8192_mtk_ddp_main, 226 .main_len = ARRAY_SIZE(mt8192_mtk_ddp_main), 227 .ext_path = mt8192_mtk_ddp_ext, 228 .ext_len = ARRAY_SIZE(mt8192_mtk_ddp_ext), 229 }; 230 231 static int mtk_drm_kms_init(struct drm_device *drm) 232 { 233 struct mtk_drm_private *private = drm->dev_private; 234 struct platform_device *pdev; 235 struct device_node *np; 236 struct device *dma_dev; 237 int ret; 238 239 if (drm_firmware_drivers_only()) 240 return -ENODEV; 241 242 if (!iommu_present(&platform_bus_type)) 243 return -EPROBE_DEFER; 244 245 pdev = of_find_device_by_node(private->mutex_node); 246 if (!pdev) { 247 dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n", 248 private->mutex_node); 249 of_node_put(private->mutex_node); 250 return -EPROBE_DEFER; 251 } 252 private->mutex_dev = &pdev->dev; 253 254 ret = drmm_mode_config_init(drm); 255 if (ret) 256 goto put_mutex_dev; 257 258 drm->mode_config.min_width = 64; 259 drm->mode_config.min_height = 64; 260 261 /* 262 * set max width and height as default value(4096x4096). 263 * this value would be used to check framebuffer size limitation 264 * at drm_mode_addfb(). 265 */ 266 drm->mode_config.max_width = 4096; 267 drm->mode_config.max_height = 4096; 268 drm->mode_config.funcs = &mtk_drm_mode_config_funcs; 269 drm->mode_config.helper_private = &mtk_drm_mode_config_helpers; 270 271 ret = component_bind_all(drm->dev, drm); 272 if (ret) 273 goto put_mutex_dev; 274 275 /* 276 * We currently support two fixed data streams, each optional, 277 * and each statically assigned to a crtc: 278 * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ... 279 */ 280 ret = mtk_drm_crtc_create(drm, private->data->main_path, 281 private->data->main_len); 282 if (ret < 0) 283 goto err_component_unbind; 284 /* ... and OVL1 -> COLOR1 -> GAMMA -> RDMA1 -> DPI0. */ 285 ret = mtk_drm_crtc_create(drm, private->data->ext_path, 286 private->data->ext_len); 287 if (ret < 0) 288 goto err_component_unbind; 289 290 ret = mtk_drm_crtc_create(drm, private->data->third_path, 291 private->data->third_len); 292 if (ret < 0) 293 goto err_component_unbind; 294 295 /* Use OVL device for all DMA memory allocations */ 296 np = private->comp_node[private->data->main_path[0]] ?: 297 private->comp_node[private->data->ext_path[0]]; 298 pdev = of_find_device_by_node(np); 299 if (!pdev) { 300 ret = -ENODEV; 301 dev_err(drm->dev, "Need at least one OVL device\n"); 302 goto err_component_unbind; 303 } 304 305 dma_dev = &pdev->dev; 306 private->dma_dev = dma_dev; 307 308 /* 309 * Configure the DMA segment size to make sure we get contiguous IOVA 310 * when importing PRIME buffers. 311 */ 312 ret = dma_set_max_seg_size(dma_dev, UINT_MAX); 313 if (ret) { 314 dev_err(dma_dev, "Failed to set DMA segment size\n"); 315 goto err_component_unbind; 316 } 317 318 ret = drm_vblank_init(drm, MAX_CRTC); 319 if (ret < 0) 320 goto err_component_unbind; 321 322 drm_kms_helper_poll_init(drm); 323 drm_mode_config_reset(drm); 324 325 return 0; 326 327 err_component_unbind: 328 component_unbind_all(drm->dev, drm); 329 put_mutex_dev: 330 put_device(private->mutex_dev); 331 return ret; 332 } 333 334 static void mtk_drm_kms_deinit(struct drm_device *drm) 335 { 336 drm_kms_helper_poll_fini(drm); 337 drm_atomic_helper_shutdown(drm); 338 339 component_unbind_all(drm->dev, drm); 340 } 341 342 DEFINE_DRM_GEM_FOPS(mtk_drm_fops); 343 344 /* 345 * We need to override this because the device used to import the memory is 346 * not dev->dev, as drm_gem_prime_import() expects. 347 */ 348 static struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev, 349 struct dma_buf *dma_buf) 350 { 351 struct mtk_drm_private *private = dev->dev_private; 352 353 return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev); 354 } 355 356 static const struct drm_driver mtk_drm_driver = { 357 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, 358 359 .dumb_create = mtk_drm_gem_dumb_create, 360 361 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 362 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 363 .gem_prime_import = mtk_drm_gem_prime_import, 364 .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table, 365 .gem_prime_mmap = drm_gem_prime_mmap, 366 .fops = &mtk_drm_fops, 367 368 .name = DRIVER_NAME, 369 .desc = DRIVER_DESC, 370 .date = DRIVER_DATE, 371 .major = DRIVER_MAJOR, 372 .minor = DRIVER_MINOR, 373 }; 374 375 static int mtk_drm_bind(struct device *dev) 376 { 377 struct mtk_drm_private *private = dev_get_drvdata(dev); 378 struct drm_device *drm; 379 int ret; 380 381 drm = drm_dev_alloc(&mtk_drm_driver, dev); 382 if (IS_ERR(drm)) 383 return PTR_ERR(drm); 384 385 drm->dev_private = private; 386 private->drm = drm; 387 388 ret = mtk_drm_kms_init(drm); 389 if (ret < 0) 390 goto err_free; 391 392 ret = drm_dev_register(drm, 0); 393 if (ret < 0) 394 goto err_deinit; 395 396 drm_fbdev_generic_setup(drm, 32); 397 398 return 0; 399 400 err_deinit: 401 mtk_drm_kms_deinit(drm); 402 err_free: 403 drm_dev_put(drm); 404 return ret; 405 } 406 407 static void mtk_drm_unbind(struct device *dev) 408 { 409 struct mtk_drm_private *private = dev_get_drvdata(dev); 410 411 drm_dev_unregister(private->drm); 412 mtk_drm_kms_deinit(private->drm); 413 drm_dev_put(private->drm); 414 private->num_pipes = 0; 415 private->drm = NULL; 416 } 417 418 static const struct component_master_ops mtk_drm_ops = { 419 .bind = mtk_drm_bind, 420 .unbind = mtk_drm_unbind, 421 }; 422 423 static const struct of_device_id mtk_ddp_comp_dt_ids[] = { 424 { .compatible = "mediatek,mt8167-disp-aal", 425 .data = (void *)MTK_DISP_AAL}, 426 { .compatible = "mediatek,mt8173-disp-aal", 427 .data = (void *)MTK_DISP_AAL}, 428 { .compatible = "mediatek,mt8183-disp-aal", 429 .data = (void *)MTK_DISP_AAL}, 430 { .compatible = "mediatek,mt8192-disp-aal", 431 .data = (void *)MTK_DISP_AAL}, 432 { .compatible = "mediatek,mt8167-disp-ccorr", 433 .data = (void *)MTK_DISP_CCORR }, 434 { .compatible = "mediatek,mt8183-disp-ccorr", 435 .data = (void *)MTK_DISP_CCORR }, 436 { .compatible = "mediatek,mt8192-disp-ccorr", 437 .data = (void *)MTK_DISP_CCORR }, 438 { .compatible = "mediatek,mt2701-disp-color", 439 .data = (void *)MTK_DISP_COLOR }, 440 { .compatible = "mediatek,mt8167-disp-color", 441 .data = (void *)MTK_DISP_COLOR }, 442 { .compatible = "mediatek,mt8173-disp-color", 443 .data = (void *)MTK_DISP_COLOR }, 444 { .compatible = "mediatek,mt8167-disp-dither", 445 .data = (void *)MTK_DISP_DITHER }, 446 { .compatible = "mediatek,mt8183-disp-dither", 447 .data = (void *)MTK_DISP_DITHER }, 448 { .compatible = "mediatek,mt8167-disp-gamma", 449 .data = (void *)MTK_DISP_GAMMA, }, 450 { .compatible = "mediatek,mt8173-disp-gamma", 451 .data = (void *)MTK_DISP_GAMMA, }, 452 { .compatible = "mediatek,mt8183-disp-gamma", 453 .data = (void *)MTK_DISP_GAMMA, }, 454 { .compatible = "mediatek,mt2701-disp-mutex", 455 .data = (void *)MTK_DISP_MUTEX }, 456 { .compatible = "mediatek,mt2712-disp-mutex", 457 .data = (void *)MTK_DISP_MUTEX }, 458 { .compatible = "mediatek,mt8167-disp-mutex", 459 .data = (void *)MTK_DISP_MUTEX }, 460 { .compatible = "mediatek,mt8173-disp-mutex", 461 .data = (void *)MTK_DISP_MUTEX }, 462 { .compatible = "mediatek,mt8183-disp-mutex", 463 .data = (void *)MTK_DISP_MUTEX }, 464 { .compatible = "mediatek,mt8192-disp-mutex", 465 .data = (void *)MTK_DISP_MUTEX }, 466 { .compatible = "mediatek,mt8173-disp-od", 467 .data = (void *)MTK_DISP_OD }, 468 { .compatible = "mediatek,mt2701-disp-ovl", 469 .data = (void *)MTK_DISP_OVL }, 470 { .compatible = "mediatek,mt8167-disp-ovl", 471 .data = (void *)MTK_DISP_OVL }, 472 { .compatible = "mediatek,mt8173-disp-ovl", 473 .data = (void *)MTK_DISP_OVL }, 474 { .compatible = "mediatek,mt8183-disp-ovl", 475 .data = (void *)MTK_DISP_OVL }, 476 { .compatible = "mediatek,mt8192-disp-ovl", 477 .data = (void *)MTK_DISP_OVL }, 478 { .compatible = "mediatek,mt8183-disp-ovl-2l", 479 .data = (void *)MTK_DISP_OVL_2L }, 480 { .compatible = "mediatek,mt8192-disp-ovl-2l", 481 .data = (void *)MTK_DISP_OVL_2L }, 482 { .compatible = "mediatek,mt8192-disp-postmask", 483 .data = (void *)MTK_DISP_POSTMASK }, 484 { .compatible = "mediatek,mt2701-disp-pwm", 485 .data = (void *)MTK_DISP_BLS }, 486 { .compatible = "mediatek,mt8167-disp-pwm", 487 .data = (void *)MTK_DISP_PWM }, 488 { .compatible = "mediatek,mt8173-disp-pwm", 489 .data = (void *)MTK_DISP_PWM }, 490 { .compatible = "mediatek,mt2701-disp-rdma", 491 .data = (void *)MTK_DISP_RDMA }, 492 { .compatible = "mediatek,mt8167-disp-rdma", 493 .data = (void *)MTK_DISP_RDMA }, 494 { .compatible = "mediatek,mt8173-disp-rdma", 495 .data = (void *)MTK_DISP_RDMA }, 496 { .compatible = "mediatek,mt8183-disp-rdma", 497 .data = (void *)MTK_DISP_RDMA }, 498 { .compatible = "mediatek,mt8192-disp-rdma", 499 .data = (void *)MTK_DISP_RDMA }, 500 { .compatible = "mediatek,mt8173-disp-ufoe", 501 .data = (void *)MTK_DISP_UFOE }, 502 { .compatible = "mediatek,mt8173-disp-wdma", 503 .data = (void *)MTK_DISP_WDMA }, 504 { .compatible = "mediatek,mt2701-dpi", 505 .data = (void *)MTK_DPI }, 506 { .compatible = "mediatek,mt8167-dsi", 507 .data = (void *)MTK_DSI }, 508 { .compatible = "mediatek,mt8173-dpi", 509 .data = (void *)MTK_DPI }, 510 { .compatible = "mediatek,mt8183-dpi", 511 .data = (void *)MTK_DPI }, 512 { .compatible = "mediatek,mt2701-dsi", 513 .data = (void *)MTK_DSI }, 514 { .compatible = "mediatek,mt8173-dsi", 515 .data = (void *)MTK_DSI }, 516 { .compatible = "mediatek,mt8183-dsi", 517 .data = (void *)MTK_DSI }, 518 { } 519 }; 520 521 static const struct of_device_id mtk_drm_of_ids[] = { 522 { .compatible = "mediatek,mt2701-mmsys", 523 .data = &mt2701_mmsys_driver_data}, 524 { .compatible = "mediatek,mt7623-mmsys", 525 .data = &mt7623_mmsys_driver_data}, 526 { .compatible = "mediatek,mt2712-mmsys", 527 .data = &mt2712_mmsys_driver_data}, 528 { .compatible = "mediatek,mt8167-mmsys", 529 .data = &mt8167_mmsys_driver_data}, 530 { .compatible = "mediatek,mt8173-mmsys", 531 .data = &mt8173_mmsys_driver_data}, 532 { .compatible = "mediatek,mt8183-mmsys", 533 .data = &mt8183_mmsys_driver_data}, 534 { .compatible = "mediatek,mt8192-mmsys", 535 .data = &mt8192_mmsys_driver_data}, 536 { } 537 }; 538 MODULE_DEVICE_TABLE(of, mtk_drm_of_ids); 539 540 static int mtk_drm_probe(struct platform_device *pdev) 541 { 542 struct device *dev = &pdev->dev; 543 struct device_node *phandle = dev->parent->of_node; 544 const struct of_device_id *of_id; 545 struct mtk_drm_private *private; 546 struct device_node *node; 547 struct component_match *match = NULL; 548 int ret; 549 int i; 550 551 private = devm_kzalloc(dev, sizeof(*private), GFP_KERNEL); 552 if (!private) 553 return -ENOMEM; 554 555 private->mmsys_dev = dev->parent; 556 if (!private->mmsys_dev) { 557 dev_err(dev, "Failed to get MMSYS device\n"); 558 return -ENODEV; 559 } 560 561 of_id = of_match_node(mtk_drm_of_ids, phandle); 562 if (!of_id) 563 return -ENODEV; 564 565 private->data = of_id->data; 566 567 /* Iterate over sibling DISP function blocks */ 568 for_each_child_of_node(phandle->parent, node) { 569 const struct of_device_id *of_id; 570 enum mtk_ddp_comp_type comp_type; 571 int comp_id; 572 573 of_id = of_match_node(mtk_ddp_comp_dt_ids, node); 574 if (!of_id) 575 continue; 576 577 if (!of_device_is_available(node)) { 578 dev_dbg(dev, "Skipping disabled component %pOF\n", 579 node); 580 continue; 581 } 582 583 comp_type = (enum mtk_ddp_comp_type)of_id->data; 584 585 if (comp_type == MTK_DISP_MUTEX) { 586 private->mutex_node = of_node_get(node); 587 continue; 588 } 589 590 comp_id = mtk_ddp_comp_get_id(node, comp_type); 591 if (comp_id < 0) { 592 dev_warn(dev, "Skipping unknown component %pOF\n", 593 node); 594 continue; 595 } 596 597 private->comp_node[comp_id] = of_node_get(node); 598 599 /* 600 * Currently only the AAL, CCORR, COLOR, GAMMA, OVL, RDMA, DSI, and DPI 601 * blocks have separate component platform drivers and initialize their own 602 * DDP component structure. The others are initialized here. 603 */ 604 if (comp_type == MTK_DISP_AAL || 605 comp_type == MTK_DISP_CCORR || 606 comp_type == MTK_DISP_COLOR || 607 comp_type == MTK_DISP_GAMMA || 608 comp_type == MTK_DISP_OVL || 609 comp_type == MTK_DISP_OVL_2L || 610 comp_type == MTK_DISP_RDMA || 611 comp_type == MTK_DPI || 612 comp_type == MTK_DSI) { 613 dev_info(dev, "Adding component match for %pOF\n", 614 node); 615 drm_of_component_match_add(dev, &match, component_compare_of, 616 node); 617 } 618 619 ret = mtk_ddp_comp_init(node, &private->ddp_comp[comp_id], comp_id); 620 if (ret) { 621 of_node_put(node); 622 goto err_node; 623 } 624 } 625 626 if (!private->mutex_node) { 627 dev_err(dev, "Failed to find disp-mutex node\n"); 628 ret = -ENODEV; 629 goto err_node; 630 } 631 632 pm_runtime_enable(dev); 633 634 platform_set_drvdata(pdev, private); 635 636 ret = component_master_add_with_match(dev, &mtk_drm_ops, match); 637 if (ret) 638 goto err_pm; 639 640 return 0; 641 642 err_pm: 643 pm_runtime_disable(dev); 644 err_node: 645 of_node_put(private->mutex_node); 646 for (i = 0; i < DDP_COMPONENT_ID_MAX; i++) 647 of_node_put(private->comp_node[i]); 648 return ret; 649 } 650 651 static int mtk_drm_remove(struct platform_device *pdev) 652 { 653 struct mtk_drm_private *private = platform_get_drvdata(pdev); 654 int i; 655 656 component_master_del(&pdev->dev, &mtk_drm_ops); 657 pm_runtime_disable(&pdev->dev); 658 of_node_put(private->mutex_node); 659 for (i = 0; i < DDP_COMPONENT_ID_MAX; i++) 660 of_node_put(private->comp_node[i]); 661 662 return 0; 663 } 664 665 #ifdef CONFIG_PM_SLEEP 666 static int mtk_drm_sys_suspend(struct device *dev) 667 { 668 struct mtk_drm_private *private = dev_get_drvdata(dev); 669 struct drm_device *drm = private->drm; 670 int ret; 671 672 ret = drm_mode_config_helper_suspend(drm); 673 674 return ret; 675 } 676 677 static int mtk_drm_sys_resume(struct device *dev) 678 { 679 struct mtk_drm_private *private = dev_get_drvdata(dev); 680 struct drm_device *drm = private->drm; 681 int ret; 682 683 ret = drm_mode_config_helper_resume(drm); 684 685 return ret; 686 } 687 #endif 688 689 static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend, 690 mtk_drm_sys_resume); 691 692 static struct platform_driver mtk_drm_platform_driver = { 693 .probe = mtk_drm_probe, 694 .remove = mtk_drm_remove, 695 .driver = { 696 .name = "mediatek-drm", 697 .pm = &mtk_drm_pm_ops, 698 }, 699 }; 700 701 static struct platform_driver * const mtk_drm_drivers[] = { 702 &mtk_disp_aal_driver, 703 &mtk_disp_ccorr_driver, 704 &mtk_disp_color_driver, 705 &mtk_disp_gamma_driver, 706 &mtk_disp_ovl_driver, 707 &mtk_disp_rdma_driver, 708 &mtk_dpi_driver, 709 &mtk_drm_platform_driver, 710 &mtk_dsi_driver, 711 }; 712 713 static int __init mtk_drm_init(void) 714 { 715 return platform_register_drivers(mtk_drm_drivers, 716 ARRAY_SIZE(mtk_drm_drivers)); 717 } 718 719 static void __exit mtk_drm_exit(void) 720 { 721 platform_unregister_drivers(mtk_drm_drivers, 722 ARRAY_SIZE(mtk_drm_drivers)); 723 } 724 725 module_init(mtk_drm_init); 726 module_exit(mtk_drm_exit); 727 728 MODULE_AUTHOR("YT SHEN <yt.shen@mediatek.com>"); 729 MODULE_DESCRIPTION("Mediatek SoC DRM driver"); 730 MODULE_LICENSE("GPL v2"); 731