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_ddp_comp.h" 21 #include "mtk_disp_drv.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_ETHDR, 30 OVL_ADAPTOR_TYPE_MDP_RDMA, 31 OVL_ADAPTOR_TYPE_MERGE, 32 OVL_ADAPTOR_TYPE_PADDING, 33 OVL_ADAPTOR_TYPE_NUM, 34 }; 35 36 enum mtk_ovl_adaptor_comp_id { 37 OVL_ADAPTOR_ETHDR0, 38 OVL_ADAPTOR_MDP_RDMA0, 39 OVL_ADAPTOR_MDP_RDMA1, 40 OVL_ADAPTOR_MDP_RDMA2, 41 OVL_ADAPTOR_MDP_RDMA3, 42 OVL_ADAPTOR_MDP_RDMA4, 43 OVL_ADAPTOR_MDP_RDMA5, 44 OVL_ADAPTOR_MDP_RDMA6, 45 OVL_ADAPTOR_MDP_RDMA7, 46 OVL_ADAPTOR_MERGE0, 47 OVL_ADAPTOR_MERGE1, 48 OVL_ADAPTOR_MERGE2, 49 OVL_ADAPTOR_MERGE3, 50 OVL_ADAPTOR_PADDING0, 51 OVL_ADAPTOR_PADDING1, 52 OVL_ADAPTOR_PADDING2, 53 OVL_ADAPTOR_PADDING3, 54 OVL_ADAPTOR_PADDING4, 55 OVL_ADAPTOR_PADDING5, 56 OVL_ADAPTOR_PADDING6, 57 OVL_ADAPTOR_PADDING7, 58 OVL_ADAPTOR_ID_MAX 59 }; 60 61 struct ovl_adaptor_comp_match { 62 enum mtk_ovl_adaptor_comp_type type; 63 enum mtk_ddp_comp_id comp_id; 64 int alias_id; 65 const struct mtk_ddp_comp_funcs *funcs; 66 }; 67 68 struct mtk_disp_ovl_adaptor { 69 struct device *ovl_adaptor_comp[OVL_ADAPTOR_ID_MAX]; 70 struct device *mmsys_dev; 71 bool children_bound; 72 }; 73 74 static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM] = { 75 [OVL_ADAPTOR_TYPE_ETHDR] = "ethdr", 76 [OVL_ADAPTOR_TYPE_MDP_RDMA] = "vdo1-rdma", 77 [OVL_ADAPTOR_TYPE_MERGE] = "merge", 78 [OVL_ADAPTOR_TYPE_PADDING] = "padding", 79 }; 80 81 static const struct mtk_ddp_comp_funcs ethdr = { 82 .clk_enable = mtk_ethdr_clk_enable, 83 .clk_disable = mtk_ethdr_clk_disable, 84 .start = mtk_ethdr_start, 85 .stop = mtk_ethdr_stop, 86 }; 87 88 static const struct mtk_ddp_comp_funcs merge = { 89 .clk_enable = mtk_merge_clk_enable, 90 .clk_disable = mtk_merge_clk_disable, 91 .mode_valid = mtk_merge_mode_valid, 92 }; 93 94 static const struct mtk_ddp_comp_funcs padding = { 95 .clk_enable = mtk_padding_clk_enable, 96 .clk_disable = mtk_padding_clk_disable, 97 .start = mtk_padding_start, 98 .stop = mtk_padding_stop, 99 }; 100 101 static const struct mtk_ddp_comp_funcs rdma = { 102 .power_on = mtk_mdp_rdma_power_on, 103 .power_off = mtk_mdp_rdma_power_off, 104 .clk_enable = mtk_mdp_rdma_clk_enable, 105 .clk_disable = mtk_mdp_rdma_clk_disable, 106 }; 107 108 static const struct ovl_adaptor_comp_match comp_matches[OVL_ADAPTOR_ID_MAX] = { 109 [OVL_ADAPTOR_ETHDR0] = { OVL_ADAPTOR_TYPE_ETHDR, DDP_COMPONENT_ETHDR_MIXER, 0, ðdr }, 110 [OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA0, 0, &rdma }, 111 [OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA1, 1, &rdma }, 112 [OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA2, 2, &rdma }, 113 [OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA3, 3, &rdma }, 114 [OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA4, 4, &rdma }, 115 [OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA5, 5, &rdma }, 116 [OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA6, 6, &rdma }, 117 [OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_MDP_RDMA, DDP_COMPONENT_MDP_RDMA7, 7, &rdma }, 118 [OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE1, 1, &merge }, 119 [OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE2, 2, &merge }, 120 [OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE3, 3, &merge }, 121 [OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE4, 4, &merge }, 122 [OVL_ADAPTOR_PADDING0] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING0, 0, &padding }, 123 [OVL_ADAPTOR_PADDING1] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING1, 1, &padding }, 124 [OVL_ADAPTOR_PADDING2] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING2, 2, &padding }, 125 [OVL_ADAPTOR_PADDING3] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING3, 3, &padding }, 126 [OVL_ADAPTOR_PADDING4] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING4, 4, &padding }, 127 [OVL_ADAPTOR_PADDING5] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING5, 5, &padding }, 128 [OVL_ADAPTOR_PADDING6] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING6, 6, &padding }, 129 [OVL_ADAPTOR_PADDING7] = { OVL_ADAPTOR_TYPE_PADDING, DDP_COMPONENT_PADDING7, 7, &padding }, 130 }; 131 132 void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx, 133 struct mtk_plane_state *state, 134 struct cmdq_pkt *cmdq_pkt) 135 { 136 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 137 struct mtk_plane_pending_state *pending = &state->pending; 138 struct mtk_mdp_rdma_cfg rdma_config = {0}; 139 struct device *rdma_l; 140 struct device *rdma_r; 141 struct device *merge; 142 struct device *ethdr; 143 const struct drm_format_info *fmt_info = drm_format_info(pending->format); 144 bool use_dual_pipe = false; 145 unsigned int align_width; 146 unsigned int l_w = 0; 147 unsigned int r_w = 0; 148 149 dev_dbg(dev, "%s+ idx:%d, enable:%d, fmt:0x%x\n", __func__, idx, 150 pending->enable, pending->format); 151 dev_dbg(dev, "addr 0x%pad, fb w:%d, {%d,%d,%d,%d}\n", 152 &pending->addr, (pending->pitch / fmt_info->cpp[0]), 153 pending->x, pending->y, pending->width, pending->height); 154 155 rdma_l = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx]; 156 rdma_r = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx + 1]; 157 merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + idx]; 158 ethdr = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]; 159 160 if (!pending->enable || !pending->width || !pending->height) { 161 mtk_merge_stop_cmdq(merge, cmdq_pkt); 162 mtk_mdp_rdma_stop(rdma_l, cmdq_pkt); 163 mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); 164 mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt); 165 return; 166 } 167 168 /* ETHDR is in 1T2P domain, width needs to be 2 pixels align */ 169 align_width = ALIGN_DOWN(pending->width, 2); 170 171 if (align_width > MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH) 172 use_dual_pipe = true; 173 174 if (use_dual_pipe) { 175 l_w = (align_width / 2) + ((pending->width / 2) % 2); 176 r_w = align_width - l_w; 177 } else { 178 l_w = align_width; 179 } 180 mtk_merge_advance_config(merge, l_w, r_w, pending->height, 0, 0, cmdq_pkt); 181 mtk_mmsys_merge_async_config(ovl_adaptor->mmsys_dev, idx, align_width / 2, 182 pending->height, cmdq_pkt); 183 184 rdma_config.width = l_w; 185 rdma_config.height = pending->height; 186 rdma_config.addr0 = pending->addr; 187 rdma_config.pitch = pending->pitch; 188 rdma_config.fmt = pending->format; 189 rdma_config.color_encoding = pending->color_encoding; 190 mtk_mdp_rdma_config(rdma_l, &rdma_config, cmdq_pkt); 191 192 if (use_dual_pipe) { 193 rdma_config.x_left = l_w; 194 rdma_config.width = r_w; 195 mtk_mdp_rdma_config(rdma_r, &rdma_config, cmdq_pkt); 196 } 197 198 mtk_merge_start_cmdq(merge, cmdq_pkt); 199 200 mtk_mdp_rdma_start(rdma_l, cmdq_pkt); 201 if (use_dual_pipe) 202 mtk_mdp_rdma_start(rdma_r, cmdq_pkt); 203 else 204 mtk_mdp_rdma_stop(rdma_r, cmdq_pkt); 205 206 mtk_ethdr_layer_config(ethdr, idx, state, cmdq_pkt); 207 } 208 209 void mtk_ovl_adaptor_config(struct device *dev, unsigned int w, 210 unsigned int h, unsigned int vrefresh, 211 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 212 { 213 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 214 215 mtk_ethdr_config(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], w, h, 216 vrefresh, bpc, cmdq_pkt); 217 } 218 219 void mtk_ovl_adaptor_start(struct device *dev) 220 { 221 int i; 222 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 223 224 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 225 if (!ovl_adaptor->ovl_adaptor_comp[i] || 226 !comp_matches[i].funcs->start) 227 continue; 228 229 comp_matches[i].funcs->start(ovl_adaptor->ovl_adaptor_comp[i]); 230 } 231 } 232 233 void mtk_ovl_adaptor_stop(struct device *dev) 234 { 235 int i; 236 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 237 238 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 239 if (!ovl_adaptor->ovl_adaptor_comp[i] || 240 !comp_matches[i].funcs->stop) 241 continue; 242 243 comp_matches[i].funcs->stop(ovl_adaptor->ovl_adaptor_comp[i]); 244 } 245 } 246 247 /** 248 * power_off - Power off the devices in OVL adaptor 249 * @dev: Device to be powered off 250 * @num: Number of the devices to be powered off 251 * 252 * Calls the .power_off() ovl_adaptor component callback if it is present. 253 */ 254 static inline void power_off(struct device *dev, int num) 255 { 256 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 257 int i; 258 259 if (num > OVL_ADAPTOR_ID_MAX) 260 num = OVL_ADAPTOR_ID_MAX; 261 262 for (i = num - 1; i >= 0; i--) { 263 if (!ovl_adaptor->ovl_adaptor_comp[i] || 264 !comp_matches[i].funcs->power_off) 265 continue; 266 267 comp_matches[i].funcs->power_off(ovl_adaptor->ovl_adaptor_comp[i]); 268 } 269 } 270 271 /** 272 * mtk_ovl_adaptor_power_on - Power on the devices in OVL adaptor 273 * @dev: Device to be powered on 274 * 275 * Different from OVL, OVL adaptor is a pseudo device so 276 * we didn't define it in the device tree, pm_runtime_resume_and_get() 277 * called by .atomic_enable() power on no device in OVL adaptor, 278 * we have to implement a function to do the job instead. 279 * 280 * Return: Zero for success or negative number for failure. 281 */ 282 int mtk_ovl_adaptor_power_on(struct device *dev) 283 { 284 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 285 int i, ret; 286 287 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 288 if (!ovl_adaptor->ovl_adaptor_comp[i] || 289 !comp_matches[i].funcs->power_on) 290 continue; 291 292 ret = comp_matches[i].funcs->power_on(ovl_adaptor->ovl_adaptor_comp[i]); 293 if (ret < 0) { 294 dev_err(dev, "Failed to enable power domain %d, err %d\n", i, ret); 295 power_off(dev, i); 296 return ret; 297 } 298 } 299 return 0; 300 } 301 302 void mtk_ovl_adaptor_power_off(struct device *dev) 303 { 304 power_off(dev, OVL_ADAPTOR_ID_MAX); 305 } 306 307 int mtk_ovl_adaptor_clk_enable(struct device *dev) 308 { 309 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 310 struct device *comp; 311 int ret; 312 int i; 313 314 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 315 comp = ovl_adaptor->ovl_adaptor_comp[i]; 316 if (!comp || !comp_matches[i].funcs->clk_enable) 317 continue; 318 ret = comp_matches[i].funcs->clk_enable(comp); 319 if (ret) { 320 dev_err(dev, "Failed to enable clock %d, err %d\n", i, ret); 321 while (--i >= 0) 322 comp_matches[i].funcs->clk_disable(comp); 323 return ret; 324 } 325 } 326 return 0; 327 } 328 329 void mtk_ovl_adaptor_clk_disable(struct device *dev) 330 { 331 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 332 struct device *comp; 333 int i; 334 335 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 336 comp = ovl_adaptor->ovl_adaptor_comp[i]; 337 if (!comp || !comp_matches[i].funcs->clk_disable) 338 continue; 339 comp_matches[i].funcs->clk_disable(comp); 340 if (i < OVL_ADAPTOR_MERGE0) 341 pm_runtime_put(comp); 342 } 343 } 344 345 enum drm_mode_status mtk_ovl_adaptor_mode_valid(struct device *dev, 346 const struct drm_display_mode *mode) 347 348 { 349 int i; 350 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 351 352 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 353 dev = ovl_adaptor->ovl_adaptor_comp[i]; 354 if (!dev || !comp_matches[i].funcs->mode_valid) 355 continue; 356 return comp_matches[i].funcs->mode_valid(dev, mode); 357 } 358 return MODE_OK; 359 } 360 361 unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev) 362 { 363 return MTK_OVL_ADAPTOR_LAYER_NUM; 364 } 365 366 struct device *mtk_ovl_adaptor_dma_dev_get(struct device *dev) 367 { 368 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 369 370 return ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]; 371 } 372 373 void mtk_ovl_adaptor_register_vblank_cb(struct device *dev, void (*vblank_cb)(void *), 374 void *vblank_cb_data) 375 { 376 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 377 378 mtk_ethdr_register_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0], 379 vblank_cb, vblank_cb_data); 380 } 381 382 void mtk_ovl_adaptor_unregister_vblank_cb(struct device *dev) 383 { 384 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 385 386 mtk_ethdr_unregister_vblank_cb(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 387 } 388 389 void mtk_ovl_adaptor_enable_vblank(struct device *dev) 390 { 391 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 392 393 mtk_ethdr_enable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 394 } 395 396 void mtk_ovl_adaptor_disable_vblank(struct device *dev) 397 { 398 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 399 400 mtk_ethdr_disable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 401 } 402 403 u32 mtk_ovl_adaptor_get_blend_modes(struct device *dev) 404 { 405 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 406 407 return mtk_ethdr_get_blend_modes(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]); 408 } 409 410 const u32 *mtk_ovl_adaptor_get_formats(struct device *dev) 411 { 412 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 413 414 return mtk_mdp_rdma_get_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]); 415 } 416 417 size_t mtk_ovl_adaptor_get_num_formats(struct device *dev) 418 { 419 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 420 421 return mtk_mdp_rdma_get_num_formats(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0]); 422 } 423 424 void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex) 425 { 426 int i; 427 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 428 429 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 430 if (!ovl_adaptor->ovl_adaptor_comp[i]) 431 continue; 432 mtk_mutex_add_comp(mutex, comp_matches[i].comp_id); 433 } 434 } 435 436 void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex) 437 { 438 int i; 439 struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev); 440 441 for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) { 442 if (!ovl_adaptor->ovl_adaptor_comp[i]) 443 continue; 444 mtk_mutex_remove_comp(mutex, comp_matches[i].comp_id); 445 } 446 } 447 448 void mtk_ovl_adaptor_connect(struct device *dev, struct device *mmsys_dev, unsigned int next) 449 { 450 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next); 451 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1); 452 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1); 453 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2); 454 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER); 455 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER); 456 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER); 457 mtk_mmsys_ddp_connect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER); 458 } 459 460 void mtk_ovl_adaptor_disconnect(struct device *dev, struct device *mmsys_dev, unsigned int next) 461 { 462 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_ETHDR_MIXER, next); 463 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA0, DDP_COMPONENT_MERGE1); 464 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA1, DDP_COMPONENT_MERGE1); 465 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MDP_RDMA2, DDP_COMPONENT_MERGE2); 466 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE1, DDP_COMPONENT_ETHDR_MIXER); 467 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE2, DDP_COMPONENT_ETHDR_MIXER); 468 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE3, DDP_COMPONENT_ETHDR_MIXER); 469 mtk_mmsys_ddp_disconnect(mmsys_dev, DDP_COMPONENT_MERGE4, DDP_COMPONENT_ETHDR_MIXER); 470 } 471 472 static int ovl_adaptor_comp_get_id(struct device *dev, struct device_node *node, 473 enum mtk_ovl_adaptor_comp_type type) 474 { 475 int alias_id = of_alias_get_id(node, private_comp_stem[type]); 476 int i; 477 478 for (i = 0; i < ARRAY_SIZE(comp_matches); i++) 479 if (comp_matches[i].type == type && 480 comp_matches[i].alias_id == alias_id) 481 return i; 482 483 dev_warn(dev, "Failed to get id. type: %d, alias: %d\n", type, alias_id); 484 return -EINVAL; 485 } 486 487 static const struct of_device_id mtk_ovl_adaptor_comp_dt_ids[] = { 488 { .compatible = "mediatek,mt8188-disp-padding", .data = (void *)OVL_ADAPTOR_TYPE_PADDING }, 489 { .compatible = "mediatek,mt8195-disp-ethdr", .data = (void *)OVL_ADAPTOR_TYPE_ETHDR }, 490 { .compatible = "mediatek,mt8195-disp-merge", .data = (void *)OVL_ADAPTOR_TYPE_MERGE }, 491 { .compatible = "mediatek,mt8195-vdo1-rdma", .data = (void *)OVL_ADAPTOR_TYPE_MDP_RDMA }, 492 { /* sentinel */ } 493 }; 494 495 static int compare_of(struct device *dev, void *data) 496 { 497 return dev->of_node == data; 498 } 499 500 static int ovl_adaptor_of_get_ddp_comp_type(struct device_node *node, 501 enum mtk_ovl_adaptor_comp_type *ctype) 502 { 503 const struct of_device_id *of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node); 504 505 if (!of_id) 506 return -EINVAL; 507 508 *ctype = (enum mtk_ovl_adaptor_comp_type)((uintptr_t)of_id->data); 509 510 return 0; 511 } 512 513 bool mtk_ovl_adaptor_is_comp_present(struct device_node *node) 514 { 515 enum mtk_ovl_adaptor_comp_type type; 516 int ret; 517 518 ret = ovl_adaptor_of_get_ddp_comp_type(node, &type); 519 if (ret) 520 return false; 521 522 if (type >= OVL_ADAPTOR_TYPE_NUM) 523 return false; 524 525 /* 526 * In the context of mediatek-drm, ETHDR, MDP_RDMA and Padding are 527 * used exclusively by OVL Adaptor: if this component is not one of 528 * those, it's likely not an OVL Adaptor path. 529 */ 530 return type == OVL_ADAPTOR_TYPE_ETHDR || 531 type == OVL_ADAPTOR_TYPE_MDP_RDMA || 532 type == OVL_ADAPTOR_TYPE_PADDING; 533 } 534 535 static int ovl_adaptor_comp_init(struct device *dev, struct component_match **match) 536 { 537 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 538 struct device_node *parent; 539 struct platform_device *comp_pdev; 540 541 parent = dev->parent->parent->of_node->parent; 542 543 for_each_child_of_node_scoped(parent, node) { 544 enum mtk_ovl_adaptor_comp_type type; 545 int id, ret; 546 547 ret = ovl_adaptor_of_get_ddp_comp_type(node, &type); 548 if (ret) 549 continue; 550 551 if (!of_device_is_available(node)) { 552 dev_dbg(dev, "Skipping disabled component %pOF\n", 553 node); 554 continue; 555 } 556 557 id = ovl_adaptor_comp_get_id(dev, node, type); 558 if (id < 0) { 559 dev_warn(dev, "Skipping unknown component %pOF\n", 560 node); 561 continue; 562 } 563 564 comp_pdev = of_find_device_by_node(node); 565 if (!comp_pdev) 566 return -EPROBE_DEFER; 567 568 priv->ovl_adaptor_comp[id] = &comp_pdev->dev; 569 570 drm_of_component_match_add(dev, match, compare_of, node); 571 dev_dbg(dev, "Adding component match for %pOF\n", node); 572 } 573 574 if (!*match) { 575 dev_err(dev, "No match device for ovl_adaptor\n"); 576 return -ENODEV; 577 } 578 579 return 0; 580 } 581 582 static int mtk_disp_ovl_adaptor_comp_bind(struct device *dev, struct device *master, 583 void *data) 584 { 585 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 586 587 if (!priv->children_bound) 588 return -EPROBE_DEFER; 589 590 return 0; 591 } 592 593 static void mtk_disp_ovl_adaptor_comp_unbind(struct device *dev, struct device *master, 594 void *data) 595 { 596 } 597 598 static const struct component_ops mtk_disp_ovl_adaptor_comp_ops = { 599 .bind = mtk_disp_ovl_adaptor_comp_bind, 600 .unbind = mtk_disp_ovl_adaptor_comp_unbind, 601 }; 602 603 static int mtk_disp_ovl_adaptor_master_bind(struct device *dev) 604 { 605 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 606 int ret; 607 608 ret = component_bind_all(dev, priv->mmsys_dev); 609 if (ret) 610 return dev_err_probe(dev, ret, "component_bind_all failed!\n"); 611 612 priv->children_bound = true; 613 return 0; 614 } 615 616 static void mtk_disp_ovl_adaptor_master_unbind(struct device *dev) 617 { 618 struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); 619 620 priv->children_bound = false; 621 } 622 623 static const struct component_master_ops mtk_disp_ovl_adaptor_master_ops = { 624 .bind = mtk_disp_ovl_adaptor_master_bind, 625 .unbind = mtk_disp_ovl_adaptor_master_unbind, 626 }; 627 628 static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev) 629 { 630 struct mtk_disp_ovl_adaptor *priv; 631 struct device *dev = &pdev->dev; 632 struct component_match *match = NULL; 633 int ret; 634 635 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 636 if (!priv) 637 return -ENOMEM; 638 639 platform_set_drvdata(pdev, priv); 640 641 ret = ovl_adaptor_comp_init(dev, &match); 642 if (ret < 0) 643 return ret; 644 645 priv->mmsys_dev = pdev->dev.platform_data; 646 647 component_master_add_with_match(dev, &mtk_disp_ovl_adaptor_master_ops, match); 648 649 pm_runtime_enable(dev); 650 651 ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops); 652 if (ret != 0) { 653 pm_runtime_disable(dev); 654 return dev_err_probe(dev, ret, "Failed to add component\n"); 655 } 656 657 return 0; 658 } 659 660 static void mtk_disp_ovl_adaptor_remove(struct platform_device *pdev) 661 { 662 component_master_del(&pdev->dev, &mtk_disp_ovl_adaptor_master_ops); 663 pm_runtime_disable(&pdev->dev); 664 } 665 666 struct platform_driver mtk_disp_ovl_adaptor_driver = { 667 .probe = mtk_disp_ovl_adaptor_probe, 668 .remove_new = mtk_disp_ovl_adaptor_remove, 669 .driver = { 670 .name = "mediatek-disp-ovl-adaptor", 671 }, 672 }; 673