1 /* 2 * (C) Copyright 2020 Rockchip Electronics Co., Ltd 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * Author: Wenping Zhang <wenping.zhang@rock-chips.com> 6 */ 7 #include <common.h> 8 #include <dm.h> 9 #include <stdio.h> 10 #include <errno.h> 11 #include <mapmem.h> 12 #include <stdlib.h> 13 #include <asm/arch/vendor.h> 14 #include <dm/of_access.h> 15 #include <dm/uclass.h> 16 #include <dm/uclass-id.h> 17 #include <boot_rkimg.h> 18 #include <rk_eink.h> 19 #include "rk_ebc.h" 20 #include "epdlut/epd_lut.h" 21 22 #define PART_WAVEFORM "waveform" 23 #define EINK_LOGO_PART_MAGIC "RKEL" 24 #define EINK_LOGO_IMAGE_MAGIC "GR04" 25 /* 26 * grayscale logo partition format: 27 * block0: 28 * struct logo_part_header part_header; 29 * struct grayscale_header logo1_header; 30 * struct grayscale_header logo2_header; 31 * struct grayscale_header logo3_header; 32 * struct grayscale_header logo4_header; 33 * .... 34 * 35 * block 1: 36 * logo1_image 37 * 38 * ..... 39 * block m: 40 * logo2_image 41 * 42 * ........ 43 * block n: 44 * logo3_image 45 * 46 * ........ 47 * block i: 48 * logoi_image 49 */ 50 51 //logo partition Header, 64byte 52 struct logo_part_header { 53 char magic[4]; /* must be "RKEL" */ 54 u32 totoal_size; 55 u32 screen_width; 56 u32 screen_height; 57 u32 logo_count; 58 u8 version[4]; 59 u32 rsv[10]; 60 } __packed; 61 62 // logo image header,32 byte 63 struct grayscale_header { 64 char magic[4]; /* must be "GR04" */ 65 u16 x; 66 u16 y; 67 u16 w; 68 u16 h; 69 u32 logo_type; 70 u32 data_offset; /* image offset in byte */ 71 u32 data_size; /* image size in byte */ 72 u32 rsv[2]; 73 } __packed; 74 75 /* 76 * The start address of logo image in logo.img must be aligned in 512 bytes, 77 * so the header size must be times of 512 bytes. Here we fix the size to 512 78 * bytes, so the count of logo image can only support up to 14. 79 */ 80 struct logo_info { 81 struct logo_part_header part_hdr; 82 struct grayscale_header img_hdr[14]; 83 } __packed; 84 85 struct rockchip_eink_display_priv { 86 struct udevice *dev; 87 struct udevice *ebc_tcon_dev; 88 struct udevice *ebc_pwr_dev; 89 int vcom; 90 }; 91 92 enum { 93 EBC_PWR_DOWN = 0, 94 EBC_PWR_ON = 1, 95 }; 96 97 #define EINK_VCOM_ID 17 98 #define EINK_VCOM_MAX 64 99 #define VCOM_DEFAULT_VALUE 1650 100 101 static struct logo_info eink_logo_info; 102 static struct udevice *eink_dev; 103 static volatile int last_logo_type = -1; 104 static int read_vcom_from_vendor(void) 105 { 106 int ret = 0; 107 char vcom_str[EINK_VCOM_MAX] = {0}; 108 char vcom_args[EINK_VCOM_MAX] = {0}; 109 110 /* Read vcom value from vendor storage part */ 111 ret = vendor_storage_read(EINK_VCOM_ID, vcom_str, (EINK_VCOM_MAX - 1)); 112 if (ret > 0) { 113 snprintf(vcom_args, strlen(vcom_str) + 15, "ebc_pmic.vcom=%s", vcom_str); 114 printf("eink update bootargs: %s\n", vcom_args); 115 env_update("bootargs", vcom_args); 116 } else { 117 return ret; 118 } 119 120 return atoi(vcom_str); 121 } 122 123 static int read_waveform(struct udevice *dev) 124 { 125 int cnt, start, ret; 126 disk_partition_t part; 127 struct blk_desc *dev_desc; 128 struct ebc_panel *plat = dev_get_platdata(dev); 129 130 dev_desc = rockchip_get_bootdev(); 131 if (!dev_desc) { 132 printf("%s: Could not find device\n", __func__); 133 return -EIO; 134 } 135 if (part_get_info_by_name(dev_desc, PART_WAVEFORM, &part) < 0) { 136 printf("Get waveform partition failed\n"); 137 return -ENODEV; 138 } 139 cnt = plat->lut_pbuf_size / RK_BLK_SIZE; 140 start = part.start; 141 ret = blk_dread(dev_desc, start, cnt, (void *)plat->lut_pbuf); 142 if (ret != cnt) 143 printf("Try to read %d blocks failed, only read %d\n", 144 cnt, ret); 145 146 flush_dcache_range((ulong)plat->lut_pbuf, 147 ALIGN((ulong)plat->lut_pbuf + cnt, 148 CONFIG_SYS_CACHELINE_SIZE)); 149 ret = epd_lut_from_mem_init(plat->lut_pbuf, &plat->lut_ops); 150 if (ret < 0) { 151 printf("lut init failed\n"); 152 return -EINVAL; 153 } 154 155 return 0; 156 } 157 158 static u32 aligned_image_size_4k(struct udevice *dev) 159 { 160 struct ebc_panel *plat = dev_get_platdata(dev); 161 u32 w = plat->width; 162 u32 h = plat->height; 163 164 return ALIGN((w * h) >> 1, 4096); 165 } 166 167 /* 168 * This driver load the grayscale image from flash, 169 * and put it in the reserve memory which define in dts: 170 * display_reserved: framebuffer@10000000 { 171 * reg = <0x0 0x10000000 0x0 0x2000000>; 172 * no-map; 173 * }; 174 * Every image logo size must be aligned in 4K, make sure 175 * kernel can use it rightly, the buffer of LOGO image is 176 * put in order of below map: 177 * |---reset logo ---| 178 * |---uboot logo ---| 179 * |---kernel logo ---| 180 * |---charge_0 logo ---| 181 * |---charge_1 logo ---| 182 * |---charge_2 logo ---| 183 * |---charge_3 logo ---| 184 * |---charge_4 logo ---| 185 * |---charge_5 logo ---| 186 * |---battery low logo---| 187 */ 188 static int get_addr_by_type(struct udevice *dev, u32 logo_type) 189 { 190 u32 offset, indx, img_size; 191 struct ebc_panel *plat = dev_get_platdata(dev); 192 193 if (plat->disp_pbuf_size == 0 || !plat->disp_pbuf) { 194 printf("invalid display buffer, please check dts\n"); 195 return -EINVAL; 196 } 197 indx = ffs(logo_type); 198 img_size = aligned_image_size_4k(dev); 199 offset = img_size * indx; 200 if (offset + img_size > plat->disp_pbuf_size) { 201 printf("reserve display memory size is not enough\n"); 202 return -EINVAL; 203 } 204 205 switch (logo_type) { 206 case EINK_LOGO_RESET: 207 case EINK_LOGO_UBOOT: 208 case EINK_LOGO_KERNEL: 209 case EINK_LOGO_CHARGING_0: 210 case EINK_LOGO_CHARGING_1: 211 case EINK_LOGO_CHARGING_2: 212 case EINK_LOGO_CHARGING_3: 213 case EINK_LOGO_CHARGING_4: 214 case EINK_LOGO_CHARGING_5: 215 case EINK_LOGO_CHARGING_LOWPOWER: 216 return (plat->disp_pbuf + offset); 217 default: 218 printf("invalid logo type[%d]\n", logo_type); 219 } 220 221 return -EINVAL; 222 } 223 224 static int read_header(struct blk_desc *dev_desc, 225 disk_partition_t *part, 226 struct logo_info *header) 227 { 228 int i; 229 struct logo_part_header *part_hdr = &header->part_hdr; 230 231 if (blk_dread(dev_desc, part->start, 1, header) != 1) 232 return -EIO; 233 234 if (memcmp(part_hdr->magic, EINK_LOGO_PART_MAGIC, 4)) { 235 printf("partition header is invalid\n"); 236 return -EINVAL; 237 } 238 if (part_hdr->logo_count == 0) { 239 printf("the count of logo image is 0\n"); 240 return -EINVAL; 241 } 242 for (i = 0; i < part_hdr->logo_count; i++) { 243 struct grayscale_header *img_hdr = &header->img_hdr[i]; 244 245 if (memcmp(img_hdr->magic, EINK_LOGO_IMAGE_MAGIC, 4)) { 246 printf("image[%d] header '%s' is invalid\n", i, 247 img_hdr->magic); 248 return -EINVAL; 249 } 250 } 251 252 return 0; 253 } 254 255 static int read_grayscale(struct blk_desc *dev_desc, 256 disk_partition_t *part, u32 offset, 257 u32 size, void *buf) 258 { 259 u32 blk_start, blk_offset, blk_count; 260 261 blk_offset = DIV_ROUND_UP(offset, dev_desc->blksz); 262 blk_start = part->start + blk_offset; 263 blk_count = DIV_ROUND_UP(size, dev_desc->blksz); 264 265 debug("blk_offset=%d, blk_start=%d,blk_count=%d,out buf=%p\n", 266 blk_offset, blk_start, blk_count, buf); 267 if (blk_dread(dev_desc, blk_start, blk_count, buf) != blk_count) { 268 printf("read grayscale data failed\n"); 269 return -EIO; 270 } 271 272 return 0; 273 } 274 275 /* 276 * The eink kernel driver need last frame to do part refresh, 277 * so we need to transfer two images to kernel, which is kernel 278 * logo and the logo displayed in uboot. 279 * 280 * this function use logo type bitmap to indicate several logo. 281 * u32 needed_logo: we only load needed logo image into ram, such as 282 * uboot logo + kernel logo or charger logo + kernel 283 * logo 284 * u32 *real_logo: because the needed logo may not exist in logo.img, 285 * so have really loaded logo in para loaded_logo. 286 */ 287 static int read_needed_logo_from_partition(struct udevice *dev, 288 u32 needed_logo, 289 u32 *loaded_logo) 290 { 291 int ret, i; 292 disk_partition_t part; 293 struct blk_desc *dev_desc; 294 struct logo_info *hdr = &eink_logo_info; 295 struct logo_part_header *part_hdr = &hdr->part_hdr; 296 struct ebc_panel *panel = dev_get_platdata(dev); 297 298 dev_desc = rockchip_get_bootdev(); 299 if (!dev_desc) { 300 printf("%s: Could not find device\n", __func__); 301 return -EIO; 302 } 303 304 if (part_get_info_by_name(dev_desc, PART_LOGO, &part) < 0) 305 return -ENODEV; 306 307 ret = read_header(dev_desc, &part, hdr); 308 if (ret < 0) { 309 printf("eink logo read header failed,ret = %d\n", ret); 310 return -EINVAL; 311 } 312 if (part_hdr->screen_width != panel->width || 313 part_hdr->screen_height != panel->height){ 314 printf("logo size(%dx%d) is not same as screen size(%dx%d)\n", 315 part_hdr->screen_width, part_hdr->screen_height, 316 panel->width, panel->height); 317 return -EINVAL; 318 } 319 320 *loaded_logo = 0; 321 for (i = 0; i < part_hdr->logo_count; i++) { 322 struct grayscale_header *img_hdr = &hdr->img_hdr[i]; 323 int pic_buf; 324 u32 offset = img_hdr->data_offset; 325 u32 size = img_hdr->data_size; 326 u32 logo_type = img_hdr->logo_type; 327 328 debug("offset=0x%x, size=%d,logo_type=%d,w=%d,h=%d\n", 329 offset, size, logo_type, img_hdr->w, img_hdr->h); 330 331 if (needed_logo & logo_type) { 332 pic_buf = get_addr_by_type(dev, logo_type); 333 334 if (pic_buf <= 0) { 335 printf("Get buffer failed for image %d\n", 336 img_hdr->logo_type); 337 return -EIO; 338 } 339 if (!IS_ALIGNED((ulong)pic_buf, 340 ARCH_DMA_MINALIGN)) { 341 printf("disp buffer is not dma aligned\n"); 342 return -EINVAL; 343 } 344 read_grayscale(dev_desc, &part, offset, size, 345 (void *)((ulong)pic_buf)); 346 flush_dcache_range((ulong)pic_buf, 347 ALIGN((ulong)pic_buf + size, 348 CONFIG_SYS_CACHELINE_SIZE)); 349 *loaded_logo |= logo_type; 350 } 351 } 352 353 return 0; 354 } 355 356 static int ebc_power_set(struct udevice *dev, int is_on) 357 { 358 int ret; 359 struct rockchip_eink_display_priv *priv = dev_get_priv(dev); 360 struct ebc_panel *panel = dev_get_platdata(dev); 361 struct udevice *ebc_tcon_dev = priv->ebc_tcon_dev; 362 struct rk_ebc_tcon_ops *ebc_tcon_ops = ebc_tcon_get_ops(ebc_tcon_dev); 363 struct udevice *ebc_pwr_dev = priv->ebc_pwr_dev; 364 struct rk_ebc_pwr_ops *pwr_ops = ebc_pwr_get_ops(ebc_pwr_dev); 365 366 if (is_on) { 367 ret = ebc_tcon_ops->enable(ebc_tcon_dev, panel); 368 if (ret) { 369 printf("%s, ebc tcon enabled failed\n", __func__); 370 return -1; 371 } 372 ret = pwr_ops->power_on(ebc_pwr_dev); 373 if (ret) { 374 printf("%s, power on failed\n", __func__); 375 return -1; 376 } 377 } else { 378 ret = pwr_ops->power_down(ebc_pwr_dev); 379 if (ret) { 380 printf("%s, power_down failed\n", __func__); 381 return -1; 382 } 383 ret = ebc_tcon_ops->disable(ebc_tcon_dev); 384 if (ret) { 385 printf("%s, ebc tcon disable failed\n", __func__); 386 return -1; 387 } 388 } 389 return 0; 390 } 391 392 static int eink_display(struct udevice *dev, u32 pre_img_buf, 393 u32 cur_img_buf, u32 lut_type, int update_mode) 394 { 395 u32 temperature, frame_num; 396 struct rockchip_eink_display_priv *priv = dev_get_priv(dev); 397 struct ebc_panel *plat = dev_get_platdata(dev); 398 struct epd_lut_ops *lut_ops = &plat->lut_ops; 399 struct udevice *ebc_pwr_dev = priv->ebc_pwr_dev; 400 struct rk_ebc_pwr_ops *pwr_ops = ebc_pwr_get_ops(ebc_pwr_dev); 401 struct udevice *ebc_tcon_dev = priv->ebc_tcon_dev; 402 struct rk_ebc_tcon_ops *ebc_tcon_ops = ebc_tcon_get_ops(ebc_tcon_dev); 403 404 pwr_ops->temp_get(ebc_pwr_dev, &temperature); 405 if (temperature <= 0 || temperature > 50) { 406 printf("temperature = %d, out of range0~50 ,use 25\n", 407 temperature); 408 temperature = 25; 409 } 410 411 if (!lut_ops->lut_get) { 412 printf("get lut ops failed\n"); 413 return -EIO; 414 } 415 lut_ops->lut_get(&plat->lut_data, lut_type, temperature); 416 frame_num = plat->lut_data.frame_num; 417 debug("lut_type=%d, frame num=%d, temp=%d\n", lut_type, 418 frame_num, temperature); 419 420 ebc_tcon_ops->lut_data_set(ebc_tcon_dev, plat->lut_data.data, 421 frame_num, 0); 422 ebc_tcon_ops->dsp_mode_set(ebc_tcon_dev, update_mode, 423 LUT_MODE, !THREE_WIN_MODE, !EINK_MODE); 424 ebc_tcon_ops->image_addr_set(ebc_tcon_dev, pre_img_buf, cur_img_buf); 425 ebc_tcon_ops->frame_start(ebc_tcon_dev, frame_num); 426 ebc_tcon_ops->wait_for_last_frame_complete(ebc_tcon_dev); 427 428 return 0; 429 } 430 431 static int rk_eink_display_init(void) 432 { 433 int ret; 434 struct uclass *uc; 435 struct udevice *dev; 436 437 if (eink_dev) { 438 printf("ebc-dev is already initialized!\n"); 439 return 0; 440 } 441 442 ret = uclass_get(UCLASS_EINK_DISPLAY, &uc); 443 if (ret) { 444 printf("can't find uclass eink\n"); 445 return -ENODEV; 446 } 447 for (uclass_first_device(UCLASS_EINK_DISPLAY, &dev); 448 dev; uclass_next_device(&dev)) 449 ; 450 451 if (eink_dev) { 452 printf("ebc-dev is probed success!\n"); 453 return 0; 454 } 455 printf("Can't find ebc-dev\n"); 456 return -ENODEV; 457 } 458 459 /* 460 * Eink display need current and previous image buffer, We assume 461 * every type of logo has only one image, so just tell this function 462 * last logo type and current logo type, it will find the right images. 463 * last_logo_type: -1 means it's first displaying. 464 */ 465 static int rockchip_eink_show_logo(int cur_logo_type, int update_mode) 466 { 467 int ret = 0; 468 u32 read_logo = 0; 469 u32 logo_addr; 470 u32 last_logo_addr; 471 struct ebc_panel *plat; 472 struct udevice *dev; 473 474 if (!eink_dev) { 475 static bool first_init = true; 476 477 if (first_init) { 478 first_init = false; 479 ret = rk_eink_display_init(); 480 if (ret) { 481 printf("Get ebc dev failed, check dts\n"); 482 return -ENODEV; 483 } 484 } else { 485 return -ENODEV; 486 } 487 } 488 dev = eink_dev; 489 490 /*Don't need to update display*/ 491 if (last_logo_type == cur_logo_type) { 492 debug("Same as last picture, Don't need to display\n"); 493 return 0; 494 } 495 496 plat = dev_get_platdata(dev); 497 498 ret = ebc_power_set(dev, EBC_PWR_ON); 499 if (ret) { 500 printf("Eink power on failed\n"); 501 return -1; 502 } 503 /* 504 * The last_logo_type is -1 means it's first displaying 505 */ 506 if (last_logo_type == -1) { 507 int size = (plat->width * plat->height) >> 1; 508 509 logo_addr = get_addr_by_type(dev, EINK_LOGO_RESET); 510 memset((u32 *)(u64)logo_addr, 0xff, size); 511 eink_display(dev, logo_addr, logo_addr, 512 WF_TYPE_RESET, 0); 513 last_logo_type = 0; 514 last_logo_addr = logo_addr; 515 } else { 516 last_logo_addr = get_addr_by_type(dev, last_logo_type); 517 if (last_logo_addr < 0) { 518 printf("Invalid last logo addr, exit!\n"); 519 goto out; 520 } 521 if (cur_logo_type == EINK_LOGO_RESET) { 522 logo_addr = get_addr_by_type(dev, EINK_LOGO_RESET); 523 eink_display(dev, last_logo_addr, 524 logo_addr, 525 WF_TYPE_GC16, update_mode); 526 last_logo_type = -1; 527 goto out; 528 } 529 } 530 ret = read_needed_logo_from_partition(dev, cur_logo_type, 531 &read_logo); 532 if (ret || !(read_logo & cur_logo_type)) { 533 printf("read uboot logo failed, read_logo=%d\n", read_logo); 534 ret = -EIO; 535 goto out; 536 } 537 logo_addr = get_addr_by_type(dev, cur_logo_type); 538 debug("logo_addr=%x, logo_type=%d\n", logo_addr, cur_logo_type); 539 if (logo_addr <= 0) { 540 printf("get logo buffer failed\n"); 541 ret = -EIO; 542 goto out; 543 } 544 545 eink_display(dev, last_logo_addr, logo_addr, WF_TYPE_GC16, update_mode); 546 last_logo_type = cur_logo_type; 547 /* 548 * System will boot up to kernel only when the 549 * logo is uboot logo 550 */ 551 if (cur_logo_type == EINK_LOGO_UBOOT) { 552 char logo_args[64] = {0}; 553 554 printf("Transmit uboot logo addr(0x%x) to kernel\n", logo_addr); 555 sprintf(logo_args, "ulogo_addr=0x%x", logo_addr); 556 env_update("bootargs", logo_args); 557 ret = read_needed_logo_from_partition(dev, EINK_LOGO_KERNEL, 558 &read_logo); 559 if (ret || !(read_logo & EINK_LOGO_KERNEL)) { 560 printf("No invalid kernel logo in logo.img\n"); 561 } else { 562 int klogo_addr = get_addr_by_type(dev, 563 EINK_LOGO_KERNEL); 564 565 if (klogo_addr <= 0) { 566 printf("get kernel logo buffer failed\n"); 567 ret = -EIO; 568 goto out; 569 } 570 printf("Transmit kernel logo addr(0x%x) to kernel\n", 571 klogo_addr); 572 sprintf(logo_args, "klogo_addr=0x%x", klogo_addr); 573 env_update("bootargs", logo_args); 574 } 575 } 576 577 out: 578 ret = ebc_power_set(dev, EBC_PWR_DOWN); 579 if (ret) 580 printf("Eink power down failed\n"); 581 return ret; 582 } 583 584 int rockchip_eink_show_uboot_logo(void) 585 { 586 return rockchip_eink_show_logo(EINK_LOGO_UBOOT, EINK_UPDATE_DIFF); 587 } 588 589 int rockchip_eink_show_charge_logo(int logo_type) 590 { 591 return rockchip_eink_show_logo(logo_type, EINK_UPDATE_DIFF); 592 } 593 594 static int rockchip_eink_display_probe(struct udevice *dev) 595 { 596 int ret, vcom; 597 struct rockchip_eink_display_priv *priv = dev_get_priv(dev); 598 599 /* Before relocation we don't need to do anything */ 600 if (!(gd->flags & GD_FLG_RELOC)) 601 return 0; 602 603 ret = uclass_get_device_by_phandle(UCLASS_EBC, dev, 604 "ebc_tcon", 605 &priv->ebc_tcon_dev); 606 if (ret) { 607 dev_err(dev, "Cannot get ebc_tcon: %d\n", ret); 608 return ret; 609 } 610 611 ret = uclass_get_device_by_phandle(UCLASS_I2C_GENERIC, dev, 612 "pmic", 613 &priv->ebc_pwr_dev); 614 if (ret) { 615 dev_err(dev, "Cannot get pmic: %d\n", ret); 616 return ret; 617 } 618 619 vcom = read_vcom_from_vendor(); 620 if (vcom <= 0) { 621 printf("read vcom from vendor failed, use default vcom\n"); 622 priv->vcom = VCOM_DEFAULT_VALUE; 623 } else { 624 priv->vcom = vcom; 625 } 626 627 if (priv->ebc_pwr_dev) { 628 struct rk_ebc_pwr_ops *pwr_ops; 629 630 pwr_ops = ebc_pwr_get_ops(priv->ebc_pwr_dev); 631 ret = pwr_ops->vcom_set(priv->ebc_pwr_dev, priv->vcom); 632 if (ret) { 633 printf("%s, vcom_set failed\n", __func__); 634 return -EIO; 635 } 636 } 637 638 // read lut to ram, and get lut ops 639 ret = read_waveform(dev); 640 if (ret < 0) { 641 printf("read wavform failed\n"); 642 return -EIO; 643 } 644 645 eink_dev = dev; 646 return 0; 647 } 648 649 static int rockchip_eink_display_ofdata_to_platdata(struct udevice *dev) 650 { 651 fdt_size_t size; 652 fdt_addr_t tmp_addr; 653 struct device_node *disp_mem; 654 struct device_node *waveform_mem; 655 struct ebc_panel *plat = dev_get_platdata(dev); 656 657 plat->width = dev_read_u32_default(dev, "panel,width", 0); 658 plat->height = dev_read_u32_default(dev, "panel,height", 0); 659 plat->sdck = dev_read_u32_default(dev, "panel,sdck", 0); 660 plat->lsl = dev_read_u32_default(dev, "panel,lsl", 0); 661 plat->lbl = dev_read_u32_default(dev, "panel,lbl", 0); 662 plat->ldl = dev_read_u32_default(dev, "panel,ldl", 0); 663 plat->lel = dev_read_u32_default(dev, "panel,lel", 0); 664 plat->gdck_sta = dev_read_u32_default(dev, "panel,gdck-sta", 0); 665 plat->lgonl = dev_read_u32_default(dev, "panel,lgonl", 0); 666 plat->fsl = dev_read_u32_default(dev, "panel,fsl", 0); 667 plat->fbl = dev_read_u32_default(dev, "panel,fbl", 0); 668 plat->fdl = dev_read_u32_default(dev, "panel,fdl", 0); 669 plat->fel = dev_read_u32_default(dev, "panel,fel", 0); 670 plat->panel_16bit = dev_read_u32_default(dev, "panel,panel_16bit", 0); 671 plat->panel_color = dev_read_u32_default(dev, "panel,panel_color", 0); 672 plat->mirror = dev_read_u32_default(dev, "panel,mirror", 0); 673 plat->width_mm = dev_read_u32_default(dev, "panel,width-mm", 0); 674 plat->height_mm = dev_read_u32_default(dev, "panel,height-mm", 0); 675 676 disp_mem = of_parse_phandle(ofnode_to_np(dev_ofnode(dev)), 677 "memory-region", 0); 678 if (!disp_mem) { 679 dev_err(dev, "Cannot get memory-region from dts\n"); 680 return -ENODEV; 681 } 682 tmp_addr = ofnode_get_addr_size(np_to_ofnode(disp_mem), "reg", &size); 683 if (tmp_addr == FDT_ADDR_T_NONE) { 684 printf("get display memory address failed\n"); 685 return -ENODEV; 686 } 687 688 plat->disp_pbuf = (u64)map_sysmem(tmp_addr, 0); 689 plat->disp_pbuf_size = size; 690 debug("display mem=0x%x, size=%x\n", plat->disp_pbuf, 691 plat->disp_pbuf_size); 692 waveform_mem = of_parse_phandle(ofnode_to_np(dev_ofnode(dev)), 693 "waveform-region", 0); 694 if (!waveform_mem) { 695 printf("Cannot get waveform-region from dts\n"); 696 return -ENODEV; 697 } 698 tmp_addr = ofnode_get_addr_size(np_to_ofnode(waveform_mem), 699 "reg", &size); 700 if (tmp_addr == FDT_ADDR_T_NONE) { 701 printf("get waveform memory address failed\n"); 702 return -ENODEV; 703 } 704 705 plat->lut_pbuf = map_sysmem(tmp_addr, 0); 706 plat->lut_pbuf_size = size; 707 debug("lut mem=0x%p, size=%x\n", plat->lut_pbuf, plat->lut_pbuf_size); 708 return 0; 709 } 710 711 static const struct udevice_id rockchip_eink_display_ids[] = { 712 { .compatible = "rockchip,ebc-dev", }, 713 {} 714 }; 715 716 U_BOOT_DRIVER(rk_eink_display) = { 717 .name = "rockchip_eink_display", 718 .id = UCLASS_EINK_DISPLAY, 719 .of_match = rockchip_eink_display_ids, 720 .ofdata_to_platdata = rockchip_eink_display_ofdata_to_platdata, 721 .probe = rockchip_eink_display_probe, 722 .priv_auto_alloc_size = sizeof(struct rockchip_eink_display_priv), 723 .platdata_auto_alloc_size = sizeof(struct ebc_panel), 724 }; 725 726 UCLASS_DRIVER(rk_eink) = { 727 .id = UCLASS_EINK_DISPLAY, 728 .name = "rk_eink", 729 }; 730 731