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_ETHDR, 31 OVL_ADAPTOR_TYPE_MDP_RDMA, 32 OVL_ADAPTOR_TYPE_MERGE, 33 OVL_ADAPTOR_TYPE_PADDING, 34 OVL_ADAPTOR_TYPE_NUM, 35 }; 36 37 enum mtk_ovl_adaptor_comp_id { 38 OVL_ADAPTOR_ETHDR0, 39 OVL_ADAPTOR_MDP_RDMA0, 40 OVL_ADAPTOR_MDP_RDMA1, 41 OVL_ADAPTOR_MDP_RDMA2, 42 OVL_ADAPTOR_MDP_RDMA3, 43 OVL_ADAPTOR_MDP_RDMA4, 44 OVL_ADAPTOR_MDP_RDMA5, 45 OVL_ADAPTOR_MDP_RDMA6, 46 OVL_ADAPTOR_MDP_RDMA7, 47 OVL_ADAPTOR_MERGE0, 48 OVL_ADAPTOR_MERGE1, 49 OVL_ADAPTOR_MERGE2, 50 OVL_ADAPTOR_MERGE3, 51 OVL_ADAPTOR_PADDING0, 52 OVL_ADAPTOR_PADDING1, 53 OVL_ADAPTOR_PADDING2, 54 OVL_ADAPTOR_PADDING3, 55 OVL_ADAPTOR_PADDING4, 56 OVL_ADAPTOR_PADDING5, 57 OVL_ADAPTOR_PADDING6, 58 OVL_ADAPTOR_PADDING7, 59 OVL_ADAPTOR_ID_MAX 60 }; 61 62 struct ovl_adaptor_comp_match { 63 enum mtk_ovl_adaptor_comp_type type; 64 enum mtk_ddp_comp_id comp_id; 65 int alias_id; 66 const struct mtk_ddp_comp_funcs *funcs; 67 }; 68 69 struct mtk_disp_ovl_adaptor { 70 struct device *ovl_adaptor_comp[OVL_ADAPTOR_ID_MAX]; 71 struct device *mmsys_dev; 72 bool children_bound; 73 }; 74 75 static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM] = { 76 [OVL_ADAPTOR_TYPE_ETHDR] = "ethdr", 77 [OVL_ADAPTOR_TYPE_MDP_RDMA] = "vdo1-rdma", 78 [OVL_ADAPTOR_TYPE_MERGE] = "merge", 79 [OVL_ADAPTOR_TYPE_PADDING] = "padding", 80 }; 81 82 static const struct mtk_ddp_comp_funcs ethdr = { 83 .clk_enable = mtk_ethdr_clk_enable, 84 .clk_disable = mtk_ethdr_clk_disable, 85 .start = mtk_ethdr_start, 86 .stop = mtk_ethdr_stop, 87 }; 88 89 static const struct mtk_ddp_comp_funcs merge = { 90 .clk_enable = mtk_merge_clk_enable, 91 .clk_disable = mtk_merge_clk_disable, 92 .mode_valid = mtk_merge_mode_valid, 93 }; 94 95 static const struct mtk_ddp_comp_funcs padding = { 96 .clk_enable = mtk_padding_clk_enable, 97 .clk_disable = mtk_padding_clk_disable, 98 .start = mtk_padding_start, 99 .stop = mtk_padding_stop, 100 }; 101 102 static const struct mtk_ddp_comp_funcs rdma = { 103 .power_on = mtk_mdp_rdma_power_on, 104 .power_off = mtk_mdp_rdma_power_off, 105 .clk_enable = mtk_mdp_rdma_clk_enable, 106 .clk_disable = mtk_mdp_rdma_clk_disable, 107 }; 108 109 static const struct ovl_adaptor_comp_match comp_matches[OVL_ADAPTOR_ID_MAX] = { 110 [OVL_ADAPTOR_ETHDR0] = { OVL_ADAPTOR_TYPE_ETHDR, DDP_COMPONENT_ETHDR_MIXER, 0, ðdr }, 111 [OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA0, 0, &rdma }, 112 [OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA1, 1, &rdma }, 113 [OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA2, 2, &rdma }, 114 [OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA3, 3, &rdma }, 115 [OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA4, 4, &rdma }, 116 [OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA5, 5, &rdma }, 117 [OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA6, 6, &rdma }, 118 [OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA7, 7, &rdma }, 119 [OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE1, 1, &merge }, 120 [OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE2, 2, &merge }, 121 [OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE3, 3, &merge }, 122 [OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE4, 4, &merge }, 123 [OVL_ADAPTOR_PADDING0] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING0, 0, &padding }, 124 [OVL_ADAPTOR_PADDING1] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING1, 1, &padding }, 125 [OVL_ADAPTOR_PADDING2] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING2, 2, &padding }, 126 [OVL_ADAPTOR_PADDING3] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING3, 3, &padding }, 127 [OVL_ADAPTOR_PADDING4] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING4, 4, &padding }, 128 [OVL_ADAPTOR_PADDING5] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING5, 5, &padding }, 129 [OVL_ADAPTOR_PADDING6] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING6, 6, &padding }, 130 [OVL_ADAPTOR_PADDING7] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING7, 7, &padding }, 131 }; 132 133 void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx, 134 struct mtk_plane_state *state, 135 struct cmdq_pkt *cmdq_pkt) 136 { 137 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 138 struct mtk_plane_pending_state *pending = &state->pending; 139 struct mtk_mdp_rdma_cfg rdma_config = {0}; 140 struct device *rdma_l; 141 struct device *rdma_r; 142 struct device *merge; 143 struct device *ethdr; 144 const struct drm_format_info *fmt_info = drm_format_info(pending->format); 145 bool use_dual_pipe = false; 146 unsigned int align_width; 147 unsigned int l_w = 0; 148 unsigned int r_w = 0; 149 150 dev_dbg(dev, "%s+ idx:%d, enable:%d, fmt:0x%x\n", __func__, idx, 151 pending->enable, pending->format); 152 dev_dbg(dev, "addr 0x%pad, fb w:%d, {%d,%d,%d,%d}\n", 153 &pending->addr, (pending->pitch / fmt_info->cpp[0]), 154 pending->x, pending->y, pending->width, pending->height); 155 156 rdma_l = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx]; 157 rdma_r = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx + 1]; 158 merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + idx]; 159 ethdr = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]; 160 161 if (!pending->enable) { 162 mtk_merge_stop_cmdq(merge, cmdq_pkt); 163 mtk_mdp_rdma_stop(rdma_l, cmdq_pkt); 164 mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); 165 mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt); 166 return; 167 } 168 169 /* ETHDR is in 1T2P domain, width needs to be 2 pixels align */ 170 align_width = ALIGN_DOWN(pending->width, 2); 171 172 if (align_width > MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH) 173 use_dual_pipe = true; 174 175 if (use_dual_pipe) { 176 l_w = (align_width / 2) + ((pending->width / 2) % 2); 177 r_w = align_width - l_w; 178 } else { 179 l_w = align_width; 180 } 181 mtk_merge_advance_config(merge, l_w, r_w, pending->height, 0, 0, cmdq_pkt); 182 mtk_mmsys_merge_async_config(ovl_adaptor->mmsys_dev, idx, align_width / 2, 183 pending->height, cmdq_pkt); 184 185 rdma_config.width = l_w; 186 rdma_config.height = pending->height; 187 rdma_config.addr0 = pending->addr; 188 rdma_config.pitch = pending->pitch; 189 rdma_config.fmt = pending->format; 190 rdma_config.color_encoding = pending->color_encoding; 191 mtk_mdp_rdma_config(rdma_l, &rdma_config, cmdq_pkt); 192 193 if (use_dual_pipe) { 194 rdma_config.x_left = l_w; 195 rdma_config.width = r_w; 196 mtk_mdp_rdma_config(rdma_r, &rdma_config, cmdq_pkt); 197 } 198 199 mtk_merge_start_cmdq(merge, cmdq_pkt); 200 201 mtk_mdp_rdma_start(rdma_l, cmdq_pkt); 202 if (use_dual_pipe) 203 mtk_mdp_rdma_start(rdma_r, cmdq_pkt); 204 else 205 mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); 206 207 mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt); 208 } 209 210 void mtk_ovl_adaptor_config(struct device *dev, unsigned int w, 211 unsigned int h, unsigned int vrefresh, 212 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 213 { 214 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 215 216 mtk_ethdr_config(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], w, h, 217 vrefresh, bpc, cmdq_pkt); 218 } 219 220 void mtk_ovl_adaptor_start(struct device *dev) 221 { 222 int i; 223 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 224 225 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 226 if (!ovl_adaptor->ovl_adaptor_comp[i] || 227 !comp_matches[i].funcs->start) 228 continue; 229 230 comp_matches[i].funcs->start(ovl_adaptor->ovl_adaptor_comp[i]); 231 } 232 } 233 234 void mtk_ovl_adaptor_stop(struct device *dev) 235 { 236 int i; 237 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 238 239 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 240 if (!ovl_adaptor->ovl_adaptor_comp[i] || 241 !comp_matches[i].funcs->stop) 242 continue; 243 244 comp_matches[i].funcs->stop(ovl_adaptor->ovl_adaptor_comp[i]); 245 } 246 } 247 248 /** 249 * power_off - Power off the devices in OVL adaptor 250 * @dev: Device to be powered off 251 * @num: Number of the devices to be powered off 252 * 253 * Calls the .power_off() ovl_adaptor component callback if it is present. 254 */ 255 static inline void power_off(struct device *dev, int num) 256 { 257 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 258 int i; 259 260 if (num > OVL_ADAPTOR_ID_MAX) 261 num = OVL_ADAPTOR_ID_MAX; 262 263 for (i = num - 1; i >= 0; i--) { 264 if (!ovl_adaptor->ovl_adaptor_comp[i] || 265 !comp_matches[i].funcs->power_off) 266 continue; 267 268 comp_matches[i].funcs->power_off(ovl_adaptor->ovl_adaptor_comp[i]); 269 } 270 } 271 272 /** 273 * mtk_ovl_adaptor_power_on - Power on the devices in OVL adaptor 274 * @dev: Device to be powered on 275 * 276 * Different from OVL, OVL adaptor is a pseudo device so 277 * we didn't define it in the device tree, pm_runtime_resume_and_get() 278 * called by .atomic_enable() power on no device in OVL adaptor, 279 * we have to implement a function to do the job instead. 280 * 281 * Return: Zero for success or negative number for failure. 282 */ 283 int mtk_ovl_adaptor_power_on(struct device *dev) 284 { 285 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 286 int i, ret; 287 288 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 289 if (!ovl_adaptor->ovl_adaptor_comp[i] || 290 !comp_matches[i].funcs->power_on) 291 continue; 292 293 ret = comp_matches[i].funcs->power_on(ovl_adaptor->ovl_adaptor_comp[i]); 294 if (ret < 0) { 295 dev_err(dev, "Failed to enable power domain %d, err %d\n", i, ret); 296 power_off(dev, i); 297 return ret; 298 } 299 } 300 return 0; 301 } 302 303 void mtk_ovl_adaptor_power_off(struct device *dev) 304 { 305 power_off(dev, OVL_ADAPTOR_ID_MAX); 306 } 307 308 int mtk_ovl_adaptor_clk_enable(struct device *dev) 309 { 310 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 311 struct device *comp; 312 int ret; 313 int i; 314 315 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 316 comp = ovl_adaptor->ovl_adaptor_comp[i]; 317 if (!comp || !comp_matches[i].funcs->clk_enable) 318 continue; 319 ret = comp_matches[i].funcs->clk_enable(comp); 320 if (ret) { 321 dev_err(dev, "Failed to enable clock %d, err %d\n", i, ret); 322 while (--i >= 0) 323 comp_matches[i].funcs->clk_disable(comp); 324 return ret; 325 } 326 } 327 return 0; 328 } 329 330 void mtk_ovl_adaptor_clk_disable(struct device *dev) 331 { 332 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 333 struct device *comp; 334 int i; 335 336 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 337 comp = ovl_adaptor->ovl_adaptor_comp[i]; 338 if (!comp || !comp_matches[i].funcs->clk_disable) 339 continue; 340 comp_matches[i].funcs->clk_disable(comp); 341 if (i < OVL_ADAPTOR_MERGE0) 342 pm_runtime_put(comp); 343 } 344 } 345 346 enum drm_mode_status mtk_ovl_adaptor_mode_valid(struct device *dev, 347 const struct drm_display_mode *mode) 348 349 { 350 int i; 351 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 352 353 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 354 dev = ovl_adaptor->ovl_adaptor_comp[i]; 355 if (!dev || !comp_matches[i].funcs->mode_valid) 356 continue; 357 return comp_matches[i].funcs->mode_valid(dev, mode); 358 } 359 return MODE_OK; 360 } 361 362 unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev) 363 { 364 return MTK_OVL_ADAPTOR_LAYER_NUM; 365 } 366 367 struct device *mtk_ovl_adaptor_dma_dev_get(struct device *dev) 368 { 369 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 370 371 return ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]; 372 } 373 374 void mtk_ovl_adaptor_register_vblank_cb(struct device *dev, void (*vblank_cb)(void *), 375 void *vblank_cb_data) 376 { 377 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 378 379 mtk_ethdr_register_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], 380 vblank_cb, vblank_cb_data); 381 } 382 383 void mtk_ovl_adaptor_unregister_vblank_cb(struct device *dev) 384 { 385 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 386 387 mtk_ethdr_unregister_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 388 } 389 390 void mtk_ovl_adaptor_enable_vblank(struct device *dev) 391 { 392 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 393 394 mtk_ethdr_enable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 395 } 396 397 void mtk_ovl_adaptor_disable_vblank(struct device *dev) 398 { 399 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 400 401 mtk_ethdr_disable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 402 } 403 404 const u32 *mtk_ovl_adaptor_get_formats(struct device *dev) 405 { 406 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 407 408 return mtk_mdp_rdma_get_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]); 409 } 410 411 size_t mtk_ovl_adaptor_get_num_formats(struct device *dev) 412 { 413 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 414 415 return mtk_mdp_rdma_get_num_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]); 416 } 417 418 void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex) 419 { 420 int i; 421 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 422 423 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 424 if (!ovl_adaptor->ovl_adaptor_comp[i]) 425 continue; 426 mtk_mutex_add_comp(mutex, comp_matches[i].comp_id); 427 } 428 } 429 430 void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex) 431 { 432 int i; 433 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 434 435 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 436 if (!ovl_adaptor->ovl_adaptor_comp[i]) 437 continue; 438 mtk_mutex_remove_comp(mutex, comp_matches[i].comp_id); 439 } 440 } 441 442 void mtk_ovl_adaptor_connect(struct device *dev, struct device *mmsys_dev, unsigned int next) 443 { 444 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next); 445 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1); 446 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1); 447 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2); 448 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER); 449 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER); 450 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER); 451 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER); 452 } 453 454 void mtk_ovl_adaptor_disconnect(struct device *dev, struct device *mmsys_dev, unsigned int next) 455 { 456 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next); 457 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1); 458 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1); 459 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2); 460 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER); 461 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER); 462 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER); 463 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER); 464 } 465 466 static int ovl_adaptor_comp_get_id(struct device *dev, struct device_node *node, 467 enum mtk_ovl_adaptor_comp_type type) 468 { 469 int alias_id = of_alias_get_id(node, private_comp_stem[type]); 470 int i; 471 472 for (i = 0; i < ARRAY_SIZE(comp_matches); i++) 473 if (comp_matches[i].type == type && 474 comp_matches[i].alias_id == alias_id) 475 return i; 476 477 dev_warn(dev, "Failed to get id. type: %d, alias: %d\n", type, alias_id); 478 return -EINVAL; 479 } 480 481 static const struct of_device_id mtk_ovl_adaptor_comp_dt_ids[] = { 482 { .compatible = "mediatek,mt8188-disp-padding", .data = (void *)OVL_ADAPTOR_TYPE_PADDING }, 483 { .compatible = "mediatek,mt8195-disp-ethdr", .data = (void *)OVL_ADAPTOR_TYPE_ETHDR }, 484 { .compatible = "mediatek,mt8195-disp-merge", .data = (void *)OVL_ADAPTOR_TYPE_MERGE }, 485 { .compatible = "mediatek,mt8195-vdo1-rdma", .data = (void *)OVL_ADAPTOR_TYPE_MDP_RDMA }, 486 { /* sentinel */ } 487 }; 488 489 static int compare_of(struct device *dev, void *data) 490 { 491 return dev->of_node == data; 492 } 493 494 static int ovl_adaptor_comp_init(struct device *dev, struct component_match **match) 495 { 496 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 497 struct device_node *node, *parent; 498 struct platform_device *comp_pdev; 499 500 parent = dev->parent->parent->of_node->parent; 501 502 for_each_child_of_node(parent, node) { 503 const struct of_device_id *of_id; 504 enum mtk_ovl_adaptor_comp_type type; 505 int id; 506 507 of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node); 508 if (!of_id) 509 continue; 510 511 if (!of_device_is_available(node)) { 512 dev_dbg(dev, "Skipping disabled component %pOF\n", 513 node); 514 continue; 515 } 516 517 type = (enum mtk_ovl_adaptor_comp_type)(uintptr_t)of_id->data; 518 id = ovl_adaptor_comp_get_id(dev, node, type); 519 if (id < 0) { 520 dev_warn(dev, "Skipping unknown component %pOF\n", 521 node); 522 continue; 523 } 524 525 comp_pdev = of_find_device_by_node(node); 526 if (!comp_pdev) 527 return -EPROBE_DEFER; 528 529 priv->ovl_adaptor_comp[id] = &comp_pdev->dev; 530 531 drm_of_component_match_add(dev, match, compare_of, node); 532 dev_dbg(dev, "Adding component match for %pOF\n", node); 533 } 534 535 if (!*match) { 536 dev_err(dev, "No match device for ovl_adaptor\n"); 537 return -ENODEV; 538 } 539 540 return 0; 541 } 542 543 static int mtk_disp_ovl_adaptor_comp_bind(struct device *dev, struct device *master, 544 void *data) 545 { 546 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 547 548 if (!priv->children_bound) 549 return -EPROBE_DEFER; 550 551 return 0; 552 } 553 554 static void mtk_disp_ovl_adaptor_comp_unbind(struct device *dev, struct device *master, 555 void *data) 556 { 557 } 558 559 static const struct component_ops mtk_disp_ovl_adaptor_comp_ops = { 560 .bind = mtk_disp_ovl_adaptor_comp_bind, 561 .unbind = mtk_disp_ovl_adaptor_comp_unbind, 562 }; 563 564 static int mtk_disp_ovl_adaptor_master_bind(struct device *dev) 565 { 566 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 567 int ret; 568 569 ret = component_bind_all(dev, priv->mmsys_dev); 570 if (ret) 571 return dev_err_probe(dev, ret, "component_bind_all failed!\n"); 572 573 priv->children_bound = true; 574 return 0; 575 } 576 577 static void mtk_disp_ovl_adaptor_master_unbind(struct device *dev) 578 { 579 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 580 581 priv->children_bound = false; 582 } 583 584 static const struct component_master_ops mtk_disp_ovl_adaptor_master_ops = { 585 .bind = mtk_disp_ovl_adaptor_master_bind, 586 .unbind = mtk_disp_ovl_adaptor_master_unbind, 587 }; 588 589 static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev) 590 { 591 struct mtk_disp_ovl_adaptor *priv; 592 struct device *dev = &pdev->dev; 593 struct component_match *match = NULL; 594 int ret; 595 596 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 597 if (!priv) 598 return -ENOMEM; 599 600 platform_set_drvdata(pdev, priv); 601 602 ret = ovl_adaptor_comp_init(dev, &match); 603 if (ret < 0) 604 return ret; 605 606 priv->mmsys_dev = pdev->dev.platform_data; 607 608 component_master_add_with_match(dev, &mtk_disp_ovl_adaptor_master_ops, match); 609 610 pm_runtime_enable(dev); 611 612 ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops); 613 if (ret != 0) { 614 pm_runtime_disable(dev); 615 dev_err(dev, "Failed to add component: %d\n", ret); 616 } 617 618 return ret; 619 } 620 621 static void mtk_disp_ovl_adaptor_remove(struct platform_device *pdev) 622 { 623 component_master_del(&pdev->dev, &mtk_disp_ovl_adaptor_master_ops); 624 pm_runtime_disable(&pdev->dev); 625 } 626 627 struct platform_driver mtk_disp_ovl_adaptor_driver = { 628 .probe = mtk_disp_ovl_adaptor_probe, 629 .remove_new = mtk_disp_ovl_adaptor_remove, 630 .driver = { 631 .name = "mediatek-disp-ovl-adaptor", 632 .owner = THIS_MODULE, 633 }, 634 }; 635