1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2021 MediaTek Inc. 4 */ 5 6 #include <drm/drm_fourcc.h> 7 #include <drm/drm_of.h> 8 #include <linux/clk.h> 9 #include <linux/component.h> 10 #include <linux/of.h> 11 #include <linux/of_address.h> 12 #include <linux/of_platform.h> 13 #include <linux/platform_device.h> 14 #include <linux/pm_runtime.h> 15 #include <linux/reset.h> 16 #include <linux/soc/mediatek/mtk-cmdq.h> 17 #include <linux/soc/mediatek/mtk-mmsys.h> 18 #include <linux/soc/mediatek/mtk-mutex.h> 19 20 #include "mtk_disp_drv.h" 21 #include "mtk_drm_crtc.h" 22 #include "mtk_drm_ddp_comp.h" 23 #include "mtk_drm_drv.h" 24 #include "mtk_ethdr.h" 25 26 #define MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH 1920 27 #define MTK_OVL_ADAPTOR_LAYER_NUM 4 28 29 enum mtk_ovl_adaptor_comp_type { 30 OVL_ADAPTOR_TYPE_RDMA = 0, 31 OVL_ADAPTOR_TYPE_MERGE, 32 OVL_ADAPTOR_TYPE_ETHDR, 33 OVL_ADAPTOR_TYPE_NUM, 34 }; 35 36 enum mtk_ovl_adaptor_comp_id { 37 OVL_ADAPTOR_MDP_RDMA0, 38 OVL_ADAPTOR_MDP_RDMA1, 39 OVL_ADAPTOR_MDP_RDMA2, 40 OVL_ADAPTOR_MDP_RDMA3, 41 OVL_ADAPTOR_MDP_RDMA4, 42 OVL_ADAPTOR_MDP_RDMA5, 43 OVL_ADAPTOR_MDP_RDMA6, 44 OVL_ADAPTOR_MDP_RDMA7, 45 OVL_ADAPTOR_MERGE0, 46 OVL_ADAPTOR_MERGE1, 47 OVL_ADAPTOR_MERGE2, 48 OVL_ADAPTOR_MERGE3, 49 OVL_ADAPTOR_ETHDR0, 50 OVL_ADAPTOR_ID_MAX 51 }; 52 53 struct ovl_adaptor_comp_match { 54 enum mtk_ovl_adaptor_comp_type type; 55 int alias_id; 56 }; 57 58 struct mtk_disp_ovl_adaptor { 59 struct device *ovl_adaptor_comp[OVL_ADAPTOR_ID_MAX]; 60 struct device *mmsys_dev; 61 bool children_bound; 62 }; 63 64 static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM] = { 65 [OVL_ADAPTOR_TYPE_RDMA] = "vdo1-rdma", 66 [OVL_ADAPTOR_TYPE_MERGE] = "merge", 67 [OVL_ADAPTOR_TYPE_ETHDR] = "ethdr", 68 }; 69 70 static const struct ovl_adaptor_comp_match comp_matches[OVL_ADAPTOR_ID_MAX] = { 71 [OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_RDMA, 0 }, 72 [OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_RDMA, 1 }, 73 [OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_RDMA, 2 }, 74 [OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_RDMA, 3 }, 75 [OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_RDMA, 4 }, 76 [OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_RDMA, 5 }, 77 [OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_RDMA, 6 }, 78 [OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_RDMA, 7 }, 79 [OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, 1 }, 80 [OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, 2 }, 81 [OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, 3 }, 82 [OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, 4 }, 83 [OVL_ADAPTOR_ETHDR0] = { OVL_ADAPTOR_TYPE_ETHDR, 0 }, 84 }; 85 86 void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx, 87 struct mtk_plane_state *state, 88 struct cmdq_pkt *cmdq_pkt) 89 { 90 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 91 struct mtk_plane_pending_state *pending = &state->pending; 92 struct mtk_mdp_rdma_cfg rdma_config = {0}; 93 struct device *rdma_l; 94 struct device *rdma_r; 95 struct device *merge; 96 struct device *ethdr; 97 const struct drm_format_info *fmt_info = drm_format_info(pending->format); 98 bool use_dual_pipe = false; 99 unsigned int align_width; 100 unsigned int l_w = 0; 101 unsigned int r_w = 0; 102 103 dev_dbg(dev, "%s+ idx:%d, enable:%d, fmt:0x%x\n", __func__, idx, 104 pending->enable, pending->format); 105 dev_dbg(dev, "addr 0x%pad, fb w:%d, {%d,%d,%d,%d}\n", 106 &pending->addr, (pending->pitch / fmt_info->cpp[0]), 107 pending->x, pending->y, pending->width, pending->height); 108 109 rdma_l = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx]; 110 rdma_r = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx + 1]; 111 merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + idx]; 112 ethdr = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]; 113 114 if (!pending->enable || !pending->width || !pending->height) { 115 mtk_merge_stop_cmdq(merge, cmdq_pkt); 116 mtk_mdp_rdma_stop(rdma_l, cmdq_pkt); 117 mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); 118 mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt); 119 return; 120 } 121 122 /* ETHDR is in 1T2P domain, width needs to be 2 pixels align */ 123 align_width = ALIGN_DOWN(pending->width, 2); 124 125 if (align_width > MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH) 126 use_dual_pipe = true; 127 128 if (use_dual_pipe) { 129 l_w = (align_width / 2) + ((pending->width / 2) % 2); 130 r_w = align_width - l_w; 131 } else { 132 l_w = align_width; 133 } 134 mtk_merge_advance_config(merge, l_w, r_w, pending->height, 0, 0, cmdq_pkt); 135 mtk_mmsys_merge_async_config(ovl_adaptor->mmsys_dev, idx, align_width / 2, 136 pending->height, cmdq_pkt); 137 138 rdma_config.width = l_w; 139 rdma_config.height = pending->height; 140 rdma_config.addr0 = pending->addr; 141 rdma_config.pitch = pending->pitch; 142 rdma_config.fmt = pending->format; 143 rdma_config.color_encoding = pending->color_encoding; 144 mtk_mdp_rdma_config(rdma_l, &rdma_config, cmdq_pkt); 145 146 if (use_dual_pipe) { 147 rdma_config.x_left = l_w; 148 rdma_config.width = r_w; 149 mtk_mdp_rdma_config(rdma_r, &rdma_config, cmdq_pkt); 150 } 151 152 mtk_merge_start_cmdq(merge, cmdq_pkt); 153 154 mtk_mdp_rdma_start(rdma_l, cmdq_pkt); 155 if (use_dual_pipe) 156 mtk_mdp_rdma_start(rdma_r, cmdq_pkt); 157 else 158 mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); 159 160 mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt); 161 } 162 163 void mtk_ovl_adaptor_config(struct device *dev, unsigned int w, 164 unsigned int h, unsigned int vrefresh, 165 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 166 { 167 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 168 169 mtk_ethdr_config(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], w, h, 170 vrefresh, bpc, cmdq_pkt); 171 } 172 173 void mtk_ovl_adaptor_start(struct device *dev) 174 { 175 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 176 177 mtk_ethdr_start(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 178 } 179 180 void mtk_ovl_adaptor_stop(struct device *dev) 181 { 182 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 183 184 mtk_ethdr_stop(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 185 } 186 187 int mtk_ovl_adaptor_clk_enable(struct device *dev) 188 { 189 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 190 struct device *comp; 191 int ret; 192 int i; 193 194 for (i = 0; i < OVL_ADAPTOR_MERGE0; i++) { 195 comp = ovl_adaptor->ovl_adaptor_comp[i]; 196 ret = pm_runtime_get_sync(comp); 197 if (ret < 0) { 198 dev_err(dev, "Failed to enable power domain %d, err %d\n", i, ret); 199 goto pwr_err; 200 } 201 } 202 203 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 204 comp = ovl_adaptor->ovl_adaptor_comp[i]; 205 206 if (i < OVL_ADAPTOR_MERGE0) 207 ret = mtk_mdp_rdma_clk_enable(comp); 208 else if (i < OVL_ADAPTOR_ETHDR0) 209 ret = mtk_merge_clk_enable(comp); 210 else 211 ret = mtk_ethdr_clk_enable(comp); 212 if (ret) { 213 dev_err(dev, "Failed to enable clock %d, err %d\n", i, ret); 214 goto clk_err; 215 } 216 } 217 218 return ret; 219 220 clk_err: 221 while (--i >= 0) { 222 comp = ovl_adaptor->ovl_adaptor_comp[i]; 223 if (i < OVL_ADAPTOR_MERGE0) 224 mtk_mdp_rdma_clk_disable(comp); 225 else if (i < OVL_ADAPTOR_ETHDR0) 226 mtk_merge_clk_disable(comp); 227 else 228 mtk_ethdr_clk_disable(comp); 229 } 230 i = OVL_ADAPTOR_MERGE0; 231 232 pwr_err: 233 while (--i >= 0) 234 pm_runtime_put(ovl_adaptor->ovl_adaptor_comp[i]); 235 236 return ret; 237 } 238 239 void mtk_ovl_adaptor_clk_disable(struct device *dev) 240 { 241 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 242 struct device *comp; 243 int i; 244 245 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 246 comp = ovl_adaptor->ovl_adaptor_comp[i]; 247 248 if (i < OVL_ADAPTOR_MERGE0) { 249 mtk_mdp_rdma_clk_disable(comp); 250 pm_runtime_put(comp); 251 } else if (i < OVL_ADAPTOR_ETHDR0) { 252 mtk_merge_clk_disable(comp); 253 } else { 254 mtk_ethdr_clk_disable(comp); 255 } 256 } 257 } 258 259 unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev) 260 { 261 return MTK_OVL_ADAPTOR_LAYER_NUM; 262 } 263 264 struct device *mtk_ovl_adaptor_dma_dev_get(struct device *dev) 265 { 266 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 267 268 return ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]; 269 } 270 271 void mtk_ovl_adaptor_register_vblank_cb(struct device *dev, void (*vblank_cb)(void *), 272 void *vblank_cb_data) 273 { 274 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 275 276 mtk_ethdr_register_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], 277 vblank_cb, vblank_cb_data); 278 } 279 280 void mtk_ovl_adaptor_unregister_vblank_cb(struct device *dev) 281 { 282 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 283 284 mtk_ethdr_unregister_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 285 } 286 287 void mtk_ovl_adaptor_enable_vblank(struct device *dev) 288 { 289 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 290 291 mtk_ethdr_enable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 292 } 293 294 void mtk_ovl_adaptor_disable_vblank(struct device *dev) 295 { 296 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 297 298 mtk_ethdr_disable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 299 } 300 301 const u32 *mtk_ovl_adaptor_get_formats(struct device *dev) 302 { 303 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 304 305 return mtk_mdp_rdma_get_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]); 306 } 307 308 size_t mtk_ovl_adaptor_get_num_formats(struct device *dev) 309 { 310 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 311 312 return mtk_mdp_rdma_get_num_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]); 313 } 314 315 void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex) 316 { 317 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA0); 318 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA1); 319 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA2); 320 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA3); 321 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA4); 322 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA5); 323 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA6); 324 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA7); 325 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE1); 326 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE2); 327 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE3); 328 mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE4); 329 mtk_mutex_add_comp(mutex, DDP_COMPONENT_ETHDR_MIXER); 330 } 331 332 void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex) 333 { 334 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA0); 335 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA1); 336 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA2); 337 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA3); 338 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA4); 339 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA5); 340 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA6); 341 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA7); 342 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE1); 343 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE2); 344 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE3); 345 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE4); 346 mtk_mutex_remove_comp(mutex, DDP_COMPONENT_ETHDR_MIXER); 347 } 348 349 void mtk_ovl_adaptor_connect(struct device *dev, struct device *mmsys_dev, unsigned int next) 350 { 351 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1); 352 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1); 353 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2); 354 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER); 355 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER); 356 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER); 357 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER); 358 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next); 359 } 360 361 void mtk_ovl_adaptor_disconnect(struct device *dev, struct device *mmsys_dev, unsigned int next) 362 { 363 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1); 364 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1); 365 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2); 366 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER); 367 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER); 368 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER); 369 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER); 370 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next); 371 } 372 373 static int ovl_adaptor_comp_get_id(struct device *dev, struct device_node *node, 374 enum mtk_ovl_adaptor_comp_type type) 375 { 376 int alias_id = of_alias_get_id(node, private_comp_stem[type]); 377 int i; 378 379 for (i = 0; i < ARRAY_SIZE(comp_matches); i++) 380 if (comp_matches[i].type == type && 381 comp_matches[i].alias_id == alias_id) 382 return i; 383 384 dev_warn(dev, "Failed to get id. type: %d, alias: %d\n", type, alias_id); 385 return -EINVAL; 386 } 387 388 static const struct of_device_id mtk_ovl_adaptor_comp_dt_ids[] = { 389 { 390 .compatible = "mediatek,mt8195-vdo1-rdma", 391 .data = (void *)OVL_ADAPTOR_TYPE_RDMA, 392 }, { 393 .compatible = "mediatek,mt8195-disp-merge", 394 .data = (void *)OVL_ADAPTOR_TYPE_MERGE, 395 }, { 396 .compatible = "mediatek,mt8195-disp-ethdr", 397 .data = (void *)OVL_ADAPTOR_TYPE_ETHDR, 398 }, 399 {}, 400 }; 401 402 static int compare_of(struct device *dev, void *data) 403 { 404 return dev->of_node == data; 405 } 406 407 static int ovl_adaptor_comp_init(struct device *dev, struct component_match **match) 408 { 409 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 410 struct device_node *node, *parent; 411 struct platform_device *comp_pdev; 412 413 parent = dev->parent->parent->of_node->parent; 414 415 for_each_child_of_node(parent, node) { 416 const struct of_device_id *of_id; 417 enum mtk_ovl_adaptor_comp_type type; 418 int id; 419 420 of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node); 421 if (!of_id) 422 continue; 423 424 if (!of_device_is_available(node)) { 425 dev_dbg(dev, "Skipping disabled component %pOF\n", 426 node); 427 continue; 428 } 429 430 type = (enum mtk_ovl_adaptor_comp_type)(uintptr_t)of_id->data; 431 id = ovl_adaptor_comp_get_id(dev, node, type); 432 if (id < 0) { 433 dev_warn(dev, "Skipping unknown component %pOF\n", 434 node); 435 continue; 436 } 437 438 comp_pdev = of_find_device_by_node(node); 439 if (!comp_pdev) 440 return -EPROBE_DEFER; 441 442 priv->ovl_adaptor_comp[id] = &comp_pdev->dev; 443 444 drm_of_component_match_add(dev, match, compare_of, node); 445 dev_dbg(dev, "Adding component match for %pOF\n", node); 446 } 447 448 if (!*match) { 449 dev_err(dev, "No match device for ovl_adaptor\n"); 450 return -ENODEV; 451 } 452 453 return 0; 454 } 455 456 static int mtk_disp_ovl_adaptor_comp_bind(struct device *dev, struct device *master, 457 void *data) 458 { 459 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 460 461 if (!priv->children_bound) 462 return -EPROBE_DEFER; 463 464 return 0; 465 } 466 467 static void mtk_disp_ovl_adaptor_comp_unbind(struct device *dev, struct device *master, 468 void *data) 469 { 470 } 471 472 static const struct component_ops mtk_disp_ovl_adaptor_comp_ops = { 473 .bind = mtk_disp_ovl_adaptor_comp_bind, 474 .unbind = mtk_disp_ovl_adaptor_comp_unbind, 475 }; 476 477 static int mtk_disp_ovl_adaptor_master_bind(struct device *dev) 478 { 479 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 480 int ret; 481 482 ret = component_bind_all(dev, priv->mmsys_dev); 483 if (ret) 484 return dev_err_probe(dev, ret, "component_bind_all failed!\n"); 485 486 priv->children_bound = true; 487 return 0; 488 } 489 490 static void mtk_disp_ovl_adaptor_master_unbind(struct device *dev) 491 { 492 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 493 494 priv->children_bound = false; 495 } 496 497 static const struct component_master_ops mtk_disp_ovl_adaptor_master_ops = { 498 .bind = mtk_disp_ovl_adaptor_master_bind, 499 .unbind = mtk_disp_ovl_adaptor_master_unbind, 500 }; 501 502 static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev) 503 { 504 struct mtk_disp_ovl_adaptor *priv; 505 struct device *dev = &pdev->dev; 506 struct component_match *match = NULL; 507 int ret; 508 509 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 510 if (!priv) 511 return -ENOMEM; 512 513 platform_set_drvdata(pdev, priv); 514 515 ret = ovl_adaptor_comp_init(dev, &match); 516 if (ret < 0) 517 return ret; 518 519 priv->mmsys_dev = pdev->dev.platform_data; 520 521 component_master_add_with_match(dev, &mtk_disp_ovl_adaptor_master_ops, match); 522 523 pm_runtime_enable(dev); 524 525 ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops); 526 if (ret != 0) { 527 pm_runtime_disable(dev); 528 dev_err(dev, "Failed to add component: %d\n", ret); 529 } 530 531 return ret; 532 } 533 534 static int mtk_disp_ovl_adaptor_remove(struct platform_device *pdev) 535 { 536 component_master_del(&pdev->dev, &mtk_disp_ovl_adaptor_master_ops); 537 pm_runtime_disable(&pdev->dev); 538 return 0; 539 } 540 541 struct platform_driver mtk_disp_ovl_adaptor_driver = { 542 .probe = mtk_disp_ovl_adaptor_probe, 543 .remove = mtk_disp_ovl_adaptor_remove, 544 .driver = { 545 .name = "mediatek-disp-ovl-adaptor", 546 .owner = THIS_MODULE, 547 }, 548 }; 549