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