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 * |---uboot logo ---| 178 * |---kernel logo ---| 179 * |---charge_0 logo ---| 180 * |---charge_1 logo ---| 181 * |---charge_2 logo ---| 182 * |---charge_3 logo ---| 183 * |---charge_4 logo ---| 184 * |---charge_5 logo ---| 185 * |---battery low logo---| 186 */ 187 static int get_addr_by_type(struct udevice *dev, u32 logo_type) 188 { 189 u32 offset, indx, img_size; 190 struct ebc_panel *plat = dev_get_platdata(dev); 191 192 if (plat->disp_pbuf_size == 0 || !plat->disp_pbuf) { 193 printf("invalid display buffer, please check dts\n"); 194 return -EINVAL; 195 } 196 indx = ffs(logo_type) - 1; 197 img_size = aligned_image_size_4k(dev); 198 offset = img_size * indx; 199 if (offset + img_size > plat->disp_pbuf_size) { 200 printf("reserve display memory size is not enough\n"); 201 return -EINVAL; 202 } 203 204 switch (logo_type) { 205 case EINK_LOGO_UBOOT: 206 case EINK_LOGO_KERNEL: 207 case EINK_LOGO_CHARGING_0: 208 case EINK_LOGO_CHARGING_1: 209 case EINK_LOGO_CHARGING_2: 210 case EINK_LOGO_CHARGING_3: 211 case EINK_LOGO_CHARGING_4: 212 case EINK_LOGO_CHARGING_5: 213 case EINK_LOGO_CHARGING_LOWPOWER: 214 return (plat->disp_pbuf + offset); 215 default: 216 printf("invalid logo type[%d]\n", logo_type); 217 } 218 219 return -EINVAL; 220 } 221 222 static int read_header(struct blk_desc *dev_desc, 223 disk_partition_t *part, 224 struct logo_info *header) 225 { 226 int i; 227 struct logo_part_header *part_hdr = &header->part_hdr; 228 229 if (blk_dread(dev_desc, part->start, 1, header) != 1) 230 return -EIO; 231 232 if (memcmp(part_hdr->magic, EINK_LOGO_PART_MAGIC, 4)) { 233 printf("partition header is invalid\n"); 234 return -EINVAL; 235 } 236 if (part_hdr->logo_count == 0) { 237 printf("the count of logo image is 0\n"); 238 return -EINVAL; 239 } 240 for (i = 0; i < part_hdr->logo_count; i++) { 241 struct grayscale_header *img_hdr = &header->img_hdr[i]; 242 243 if (memcmp(img_hdr->magic, EINK_LOGO_IMAGE_MAGIC, 4)) { 244 printf("image[%d] header '%s' is invalid\n", i, 245 img_hdr->magic); 246 return -EINVAL; 247 } 248 } 249 250 return 0; 251 } 252 253 static int read_grayscale(struct blk_desc *dev_desc, 254 disk_partition_t *part, u32 offset, 255 u32 size, void *buf) 256 { 257 u32 blk_start, blk_offset, blk_count; 258 259 blk_offset = DIV_ROUND_UP(offset, dev_desc->blksz); 260 blk_start = part->start + blk_offset; 261 blk_count = DIV_ROUND_UP(size, dev_desc->blksz); 262 263 debug("blk_offset=%d, blk_start=%d,blk_count=%d,out buf=%p\n", 264 blk_offset, blk_start, blk_count, buf); 265 if (blk_dread(dev_desc, blk_start, blk_count, buf) != blk_count) { 266 printf("read grayscale data failed\n"); 267 return -EIO; 268 } 269 270 return 0; 271 } 272 273 /* 274 * The eink kernel driver need last frame to do part refresh, 275 * so we need to transfer two images to kernel, which is kernel 276 * logo and the logo displayed in uboot. 277 * 278 * this function use logo type bitmap to indicate several logo. 279 * u32 needed_logo: we only load needed logo image into ram, such as 280 * uboot logo + kernel logo or charger logo + kernel 281 * logo 282 * u32 *real_logo: because the needed logo may not exist in logo.img, 283 * so have really loaded logo in para loaded_logo. 284 */ 285 static int read_needed_logo_from_partition(struct udevice *dev, 286 u32 needed_logo, 287 u32 *loaded_logo) 288 { 289 int ret, i; 290 disk_partition_t part; 291 struct blk_desc *dev_desc; 292 struct logo_info *hdr = &eink_logo_info; 293 struct logo_part_header *part_hdr = &hdr->part_hdr; 294 struct ebc_panel *panel = dev_get_platdata(dev); 295 296 dev_desc = rockchip_get_bootdev(); 297 if (!dev_desc) { 298 printf("%s: Could not find device\n", __func__); 299 return -EIO; 300 } 301 302 if (part_get_info_by_name(dev_desc, PART_LOGO, &part) < 0) 303 return -ENODEV; 304 305 ret = read_header(dev_desc, &part, hdr); 306 if (ret < 0) { 307 printf("eink logo read header failed,ret = %d\n", ret); 308 return -EINVAL; 309 } 310 if (part_hdr->screen_width != panel->width || 311 part_hdr->screen_height != panel->height){ 312 printf("logo size(%dx%d) is not same as screen size(%dx%d)\n", 313 part_hdr->screen_width, part_hdr->screen_height, 314 panel->width, panel->height); 315 return -EINVAL; 316 } 317 318 *loaded_logo = 0; 319 for (i = 0; i < part_hdr->logo_count; i++) { 320 struct grayscale_header *img_hdr = &hdr->img_hdr[i]; 321 int pic_buf; 322 u32 offset = img_hdr->data_offset; 323 u32 size = img_hdr->data_size; 324 u32 logo_type = img_hdr->logo_type; 325 326 debug("offset=0x%x, size=%d,logo_type=%d,w=%d,h=%d\n", 327 offset, size, logo_type, img_hdr->w, img_hdr->h); 328 329 if (needed_logo & logo_type) { 330 pic_buf = get_addr_by_type(dev, logo_type); 331 332 if (pic_buf <= 0) { 333 printf("Get buffer failed for image %d\n", 334 img_hdr->logo_type); 335 return -EIO; 336 } 337 if (!IS_ALIGNED((ulong)pic_buf, 338 ARCH_DMA_MINALIGN)) { 339 printf("disp buffer is not dma aligned\n"); 340 return -EINVAL; 341 } 342 read_grayscale(dev_desc, &part, offset, size, 343 (void *)((ulong)pic_buf)); 344 flush_dcache_range((ulong)pic_buf, 345 ALIGN((ulong)pic_buf + size, 346 CONFIG_SYS_CACHELINE_SIZE)); 347 *loaded_logo |= logo_type; 348 } 349 } 350 351 return 0; 352 } 353 354 static int ebc_power_set(struct udevice *dev, int is_on) 355 { 356 int ret; 357 struct rockchip_eink_display_priv *priv = dev_get_priv(dev); 358 struct ebc_panel *panel = dev_get_platdata(dev); 359 struct udevice *ebc_tcon_dev = priv->ebc_tcon_dev; 360 struct rk_ebc_tcon_ops *ebc_tcon_ops = ebc_tcon_get_ops(ebc_tcon_dev); 361 struct udevice *ebc_pwr_dev = priv->ebc_pwr_dev; 362 struct rk_ebc_pwr_ops *pwr_ops = ebc_pwr_get_ops(ebc_pwr_dev); 363 364 if (is_on) { 365 ret = ebc_tcon_ops->enable(ebc_tcon_dev, panel); 366 if (ret) { 367 printf("%s, ebc tcon enabled failed\n", __func__); 368 return -1; 369 } 370 ret = pwr_ops->power_on(ebc_pwr_dev); 371 if (ret) { 372 printf("%s, power on failed\n", __func__); 373 return -1; 374 } 375 } else { 376 ret = pwr_ops->power_down(ebc_pwr_dev); 377 if (ret) { 378 printf("%s, power_down failed\n", __func__); 379 return -1; 380 } 381 ret = ebc_tcon_ops->disable(ebc_tcon_dev); 382 if (ret) { 383 printf("%s, ebc tcon disable failed\n", __func__); 384 return -1; 385 } 386 } 387 return 0; 388 } 389 390 static int eink_display(struct udevice *dev, u32 pre_img_buf, 391 u32 cur_img_buf, u32 lut_type, int update_mode) 392 { 393 u32 temperature, frame_num; 394 struct rockchip_eink_display_priv *priv = dev_get_priv(dev); 395 struct ebc_panel *plat = dev_get_platdata(dev); 396 struct epd_lut_ops *lut_ops = &plat->lut_ops; 397 struct udevice *ebc_pwr_dev = priv->ebc_pwr_dev; 398 struct rk_ebc_pwr_ops *pwr_ops = ebc_pwr_get_ops(ebc_pwr_dev); 399 struct udevice *ebc_tcon_dev = priv->ebc_tcon_dev; 400 struct rk_ebc_tcon_ops *ebc_tcon_ops = ebc_tcon_get_ops(ebc_tcon_dev); 401 402 pwr_ops->temp_get(ebc_pwr_dev, &temperature); 403 if (temperature <= 0 || temperature > 50) { 404 printf("temperature = %d, out of range0~50 ,use 25\n", 405 temperature); 406 temperature = 25; 407 } 408 409 if (!lut_ops->lut_get) { 410 printf("get lut ops failed\n"); 411 return -EIO; 412 } 413 lut_ops->lut_get(&plat->lut_data, lut_type, temperature); 414 frame_num = plat->lut_data.frame_num; 415 debug("lut_type=%d, frame num=%d, temp=%d\n", lut_type, 416 frame_num, temperature); 417 418 ebc_tcon_ops->lut_data_set(ebc_tcon_dev, plat->lut_data.data, 419 frame_num, 0); 420 ebc_tcon_ops->dsp_mode_set(ebc_tcon_dev, update_mode, 421 LUT_MODE, !THREE_WIN_MODE, !EINK_MODE); 422 ebc_tcon_ops->image_addr_set(ebc_tcon_dev, pre_img_buf, cur_img_buf); 423 ebc_tcon_ops->frame_start(ebc_tcon_dev, frame_num); 424 ebc_tcon_ops->wait_for_last_frame_complete(ebc_tcon_dev); 425 426 return 0; 427 } 428 429 static int rk_eink_display_init(void) 430 { 431 int ret; 432 struct uclass *uc; 433 struct udevice *dev; 434 435 if (eink_dev) { 436 printf("ebc-dev is already initialized!\n"); 437 return 0; 438 } 439 440 ret = uclass_get(UCLASS_EINK_DISPLAY, &uc); 441 if (ret) { 442 printf("can't find uclass eink\n"); 443 return -ENODEV; 444 } 445 for (uclass_first_device(UCLASS_EINK_DISPLAY, &dev); 446 dev; uclass_next_device(&dev)) 447 ; 448 449 if (eink_dev) { 450 printf("ebc-dev is probed success!\n"); 451 return 0; 452 } 453 printf("Can't find ebc-dev\n"); 454 return -ENODEV; 455 } 456 457 /* 458 * Eink display need current and previous image buffer, We assume 459 * every type of logo has only one image, so just tell this function 460 * last logo type and current logo type, it will find the right images. 461 * last_logo_type: -1 means it's first displaying. 462 */ 463 static int rockchip_eink_show_logo(int cur_logo_type, int update_mode) 464 { 465 int ret = 0; 466 u32 read_logo = 0; 467 u32 logo_addr; 468 u32 last_logo_addr; 469 struct ebc_panel *plat; 470 void *reset_disp_addr = NULL; 471 struct udevice *dev; 472 473 if (!eink_dev) { 474 ret = rk_eink_display_init(); 475 if (ret) { 476 printf("Get ebc dev failed, check dts configs\n"); 477 return -ENODEV; 478 } 479 } 480 dev = eink_dev; 481 482 /*Don't need to update display*/ 483 if (last_logo_type == cur_logo_type) { 484 debug("Same as last picture, Don't need to display\n"); 485 return 0; 486 } 487 488 plat = dev_get_platdata(dev); 489 490 ret = ebc_power_set(dev, EBC_PWR_ON); 491 if (ret) { 492 printf("Eink power on failed\n"); 493 return -1; 494 } 495 /* 496 * The last_logo_type is 0 means it's first displaying 497 */ 498 if (last_logo_type == -1) { 499 int size = (plat->width * plat->height) >> 1; 500 501 reset_disp_addr = memalign(ARCH_DMA_MINALIGN, size); 502 memset(reset_disp_addr, 0xff, size); 503 last_logo_addr = (u32)(u64)reset_disp_addr; 504 eink_display(dev, last_logo_addr, last_logo_addr, 505 WF_TYPE_RESET, 0); 506 last_logo_type = 0; 507 } else { 508 last_logo_addr = get_addr_by_type(dev, last_logo_type); 509 if (last_logo_addr < 0) { 510 printf("Invalid last logo addr, exit!\n"); 511 goto out; 512 } 513 if (cur_logo_type == EINK_LOGO_RESET) { 514 int size = (plat->width * plat->height) >> 1; 515 516 reset_disp_addr = memalign(ARCH_DMA_MINALIGN, size); 517 memset(reset_disp_addr, 0xff, size); 518 eink_display(dev, last_logo_addr, 519 (u32)(u64)reset_disp_addr, 520 WF_TYPE_GC16, update_mode); 521 last_logo_type = -1; 522 goto out; 523 } 524 } 525 ret = read_needed_logo_from_partition(dev, cur_logo_type, 526 &read_logo); 527 if (ret || !(read_logo & cur_logo_type)) { 528 printf("read uboot logo failed, read_logo=%d\n", read_logo); 529 ret = -EIO; 530 goto out; 531 } 532 logo_addr = get_addr_by_type(dev, cur_logo_type); 533 debug("logo_addr=%x, logo_type=%d\n", logo_addr, cur_logo_type); 534 if (logo_addr <= 0) { 535 printf("get logo buffer failed\n"); 536 ret = -EIO; 537 goto out; 538 } 539 540 eink_display(dev, last_logo_addr, logo_addr, WF_TYPE_GC16, update_mode); 541 last_logo_type = cur_logo_type; 542 /* 543 * System will boot up to kernel only when the 544 * logo is uboot logo 545 */ 546 if (cur_logo_type == EINK_LOGO_UBOOT) { 547 char logo_args[64] = {0}; 548 549 printf("Transmit uboot logo addr(0x%x) to kernel\n", logo_addr); 550 sprintf(logo_args, "ulogo_addr=0x%x", logo_addr); 551 env_update("bootargs", logo_args); 552 ret = read_needed_logo_from_partition(dev, EINK_LOGO_KERNEL, 553 &read_logo); 554 if (ret || !(read_logo & EINK_LOGO_KERNEL)) { 555 printf("No invalid kernel logo in logo.img\n"); 556 } else { 557 int klogo_addr = get_addr_by_type(dev, 558 EINK_LOGO_KERNEL); 559 560 if (klogo_addr <= 0) { 561 printf("get kernel logo buffer failed\n"); 562 ret = -EIO; 563 goto out; 564 } 565 printf("Transmit kernel logo addr(0x%x) to kernel\n", 566 klogo_addr); 567 sprintf(logo_args, "klogo_addr=0x%x", klogo_addr); 568 env_update("bootargs", logo_args); 569 } 570 } 571 572 out: 573 if (reset_disp_addr) 574 free(reset_disp_addr); 575 ret = ebc_power_set(dev, EBC_PWR_DOWN); 576 if (ret) 577 printf("Eink power down failed\n"); 578 return ret; 579 } 580 581 int rockchip_eink_show_uboot_logo(void) 582 { 583 return rockchip_eink_show_logo(EINK_LOGO_UBOOT, EINK_UPDATE_DIFF); 584 } 585 586 int rockchip_eink_show_charge_logo(int logo_type) 587 { 588 return rockchip_eink_show_logo(logo_type, EINK_UPDATE_DIFF); 589 } 590 591 static int rockchip_eink_display_probe(struct udevice *dev) 592 { 593 int ret, vcom; 594 struct rockchip_eink_display_priv *priv = dev_get_priv(dev); 595 596 /* Before relocation we don't need to do anything */ 597 if (!(gd->flags & GD_FLG_RELOC)) 598 return 0; 599 600 ret = uclass_get_device_by_phandle(UCLASS_EBC, dev, 601 "ebc_tcon", 602 &priv->ebc_tcon_dev); 603 if (ret && ret != -ENOENT) { 604 dev_err(dev, "Cannot get ebc_tcon: %d\n", ret); 605 return ret; 606 } 607 608 ret = uclass_get_device_by_phandle(UCLASS_I2C_GENERIC, dev, 609 "pmic", 610 &priv->ebc_pwr_dev); 611 if (ret && ret != -ENOENT) { 612 dev_err(dev, "Cannot get pmic: %d\n", ret); 613 return ret; 614 } 615 616 vcom = read_vcom_from_vendor(); 617 if (vcom <= 0) { 618 printf("read vcom from vendor failed, use default vcom\n"); 619 priv->vcom = VCOM_DEFAULT_VALUE; 620 } else { 621 priv->vcom = vcom; 622 } 623 624 if (priv->ebc_pwr_dev) { 625 struct rk_ebc_pwr_ops *pwr_ops; 626 627 pwr_ops = ebc_pwr_get_ops(priv->ebc_pwr_dev); 628 ret = pwr_ops->vcom_set(priv->ebc_pwr_dev, priv->vcom); 629 if (ret) { 630 printf("%s, vcom_set failed\n", __func__); 631 return -EIO; 632 } 633 } 634 635 // read lut to ram, and get lut ops 636 ret = read_waveform(dev); 637 if (ret < 0) { 638 printf("read wavform failed\n"); 639 return -EIO; 640 } 641 642 eink_dev = dev; 643 return 0; 644 } 645 646 static int rockchip_eink_display_ofdata_to_platdata(struct udevice *dev) 647 { 648 fdt_size_t size; 649 fdt_addr_t tmp_addr; 650 struct device_node *disp_mem; 651 struct device_node *waveform_mem; 652 struct ebc_panel *plat = dev_get_platdata(dev); 653 654 plat->width = dev_read_u32_default(dev, "panel,width", 0); 655 plat->height = dev_read_u32_default(dev, "panel,height", 0); 656 plat->sdck = dev_read_u32_default(dev, "panel,sdck", 0); 657 plat->lsl = dev_read_u32_default(dev, "panel,lsl", 0); 658 plat->lbl = dev_read_u32_default(dev, "panel,lbl", 0); 659 plat->ldl = dev_read_u32_default(dev, "panel,ldl", 0); 660 plat->lel = dev_read_u32_default(dev, "panel,lel", 0); 661 plat->gdck_sta = dev_read_u32_default(dev, "panel,gdck-sta", 0); 662 plat->lgonl = dev_read_u32_default(dev, "panel,lgonl", 0); 663 plat->fsl = dev_read_u32_default(dev, "panel,fsl", 0); 664 plat->fbl = dev_read_u32_default(dev, "panel,fbl", 0); 665 plat->fdl = dev_read_u32_default(dev, "panel,fdl", 0); 666 plat->fel = dev_read_u32_default(dev, "panel,fel", 0); 667 plat->panel_16bit = dev_read_u32_default(dev, "panel,panel_16bit", 0); 668 plat->panel_color = dev_read_u32_default(dev, "panel,panel_color", 0); 669 plat->mirror = dev_read_u32_default(dev, "panel,mirror", 0); 670 plat->width_mm = dev_read_u32_default(dev, "panel,width-mm", 0); 671 plat->height_mm = dev_read_u32_default(dev, "panel,height-mm", 0); 672 673 disp_mem = of_parse_phandle(ofnode_to_np(dev_ofnode(dev)), 674 "memory-region", 0); 675 if (!disp_mem) { 676 dev_err(dev, "Cannot get memory-region from dts\n"); 677 return -ENODEV; 678 } 679 tmp_addr = ofnode_get_addr_size(np_to_ofnode(disp_mem), "reg", &size); 680 if (tmp_addr == FDT_ADDR_T_NONE) { 681 printf("get display memory address failed\n"); 682 return -ENODEV; 683 } 684 685 plat->disp_pbuf = (u64)map_sysmem(tmp_addr, 0); 686 plat->disp_pbuf_size = size; 687 debug("display mem=0x%x, size=%x\n", plat->disp_pbuf, 688 plat->disp_pbuf_size); 689 waveform_mem = of_parse_phandle(ofnode_to_np(dev_ofnode(dev)), 690 "waveform-region", 0); 691 if (!waveform_mem) { 692 printf("Cannot get waveform-region from dts\n"); 693 return -ENODEV; 694 } 695 tmp_addr = ofnode_get_addr_size(np_to_ofnode(waveform_mem), 696 "reg", &size); 697 if (tmp_addr == FDT_ADDR_T_NONE) { 698 printf("get waveform memory address failed\n"); 699 return -ENODEV; 700 } 701 702 plat->lut_pbuf = map_sysmem(tmp_addr, 0); 703 plat->lut_pbuf_size = size; 704 debug("lut mem=0x%p, size=%x\n", plat->lut_pbuf, plat->lut_pbuf_size); 705 return 0; 706 } 707 708 static const struct udevice_id rockchip_eink_display_ids[] = { 709 { .compatible = "rockchip,ebc-dev", }, 710 {} 711 }; 712 713 U_BOOT_DRIVER(rk_eink_display) = { 714 .name = "rockchip_eink_display", 715 .id = UCLASS_EINK_DISPLAY, 716 .of_match = rockchip_eink_display_ids, 717 .ofdata_to_platdata = rockchip_eink_display_ofdata_to_platdata, 718 .probe = rockchip_eink_display_probe, 719 .priv_auto_alloc_size = sizeof(struct rockchip_eink_display_priv), 720 .platdata_auto_alloc_size = sizeof(struct ebc_panel), 721 }; 722 723 UCLASS_DRIVER(rk_eink) = { 724 .id = UCLASS_EINK_DISPLAY, 725 .name = "rk_eink", 726 }; 727 728