1 /* 2 * Copyright (C) 2013, NVIDIA Corporation. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sub license, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the 12 * next paragraph) shall be included in all copies or substantial portions 13 * of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 #include <linux/backlight.h> 25 #include <linux/gpio/consumer.h> 26 #include <linux/module.h> 27 #include <linux/of_platform.h> 28 #include <linux/platform_device.h> 29 #include <linux/regulator/consumer.h> 30 31 #include <drm/drmP.h> 32 #include <drm/drm_crtc.h> 33 #include <drm/drm_mipi_dsi.h> 34 #include <drm/drm_panel.h> 35 36 struct panel_desc { 37 const struct drm_display_mode *modes; 38 unsigned int num_modes; 39 40 struct { 41 unsigned int width; 42 unsigned int height; 43 } size; 44 }; 45 46 struct panel_simple { 47 struct drm_panel base; 48 bool enabled; 49 50 const struct panel_desc *desc; 51 52 struct backlight_device *backlight; 53 struct regulator *supply; 54 struct i2c_adapter *ddc; 55 56 struct gpio_desc *enable_gpio; 57 }; 58 59 static inline struct panel_simple *to_panel_simple(struct drm_panel *panel) 60 { 61 return container_of(panel, struct panel_simple, base); 62 } 63 64 static int panel_simple_get_fixed_modes(struct panel_simple *panel) 65 { 66 struct drm_connector *connector = panel->base.connector; 67 struct drm_device *drm = panel->base.drm; 68 struct drm_display_mode *mode; 69 unsigned int i, num = 0; 70 71 if (!panel->desc) 72 return 0; 73 74 for (i = 0; i < panel->desc->num_modes; i++) { 75 const struct drm_display_mode *m = &panel->desc->modes[i]; 76 77 mode = drm_mode_duplicate(drm, m); 78 if (!mode) { 79 dev_err(drm->dev, "failed to add mode %ux%u@%u\n", 80 m->hdisplay, m->vdisplay, m->vrefresh); 81 continue; 82 } 83 84 drm_mode_set_name(mode); 85 86 drm_mode_probed_add(connector, mode); 87 num++; 88 } 89 90 connector->display_info.width_mm = panel->desc->size.width; 91 connector->display_info.height_mm = panel->desc->size.height; 92 93 return num; 94 } 95 96 static int panel_simple_disable(struct drm_panel *panel) 97 { 98 struct panel_simple *p = to_panel_simple(panel); 99 100 if (!p->enabled) 101 return 0; 102 103 if (p->backlight) { 104 p->backlight->props.power = FB_BLANK_POWERDOWN; 105 backlight_update_status(p->backlight); 106 } 107 108 if (p->enable_gpio) 109 gpiod_set_value_cansleep(p->enable_gpio, 0); 110 111 regulator_disable(p->supply); 112 p->enabled = false; 113 114 return 0; 115 } 116 117 static int panel_simple_enable(struct drm_panel *panel) 118 { 119 struct panel_simple *p = to_panel_simple(panel); 120 int err; 121 122 if (p->enabled) 123 return 0; 124 125 err = regulator_enable(p->supply); 126 if (err < 0) { 127 dev_err(panel->dev, "failed to enable supply: %d\n", err); 128 return err; 129 } 130 131 if (p->enable_gpio) 132 gpiod_set_value_cansleep(p->enable_gpio, 1); 133 134 if (p->backlight) { 135 p->backlight->props.power = FB_BLANK_UNBLANK; 136 backlight_update_status(p->backlight); 137 } 138 139 p->enabled = true; 140 141 return 0; 142 } 143 144 static int panel_simple_get_modes(struct drm_panel *panel) 145 { 146 struct panel_simple *p = to_panel_simple(panel); 147 int num = 0; 148 149 /* probe EDID if a DDC bus is available */ 150 if (p->ddc) { 151 struct edid *edid = drm_get_edid(panel->connector, p->ddc); 152 drm_mode_connector_update_edid_property(panel->connector, edid); 153 if (edid) { 154 num += drm_add_edid_modes(panel->connector, edid); 155 kfree(edid); 156 } 157 } 158 159 /* add hard-coded panel modes */ 160 num += panel_simple_get_fixed_modes(p); 161 162 return num; 163 } 164 165 static const struct drm_panel_funcs panel_simple_funcs = { 166 .disable = panel_simple_disable, 167 .enable = panel_simple_enable, 168 .get_modes = panel_simple_get_modes, 169 }; 170 171 static int panel_simple_probe(struct device *dev, const struct panel_desc *desc) 172 { 173 struct device_node *backlight, *ddc; 174 struct panel_simple *panel; 175 int err; 176 177 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); 178 if (!panel) 179 return -ENOMEM; 180 181 panel->enabled = false; 182 panel->desc = desc; 183 184 panel->supply = devm_regulator_get(dev, "power"); 185 if (IS_ERR(panel->supply)) 186 return PTR_ERR(panel->supply); 187 188 panel->enable_gpio = devm_gpiod_get(dev, "enable"); 189 if (IS_ERR(panel->enable_gpio)) { 190 err = PTR_ERR(panel->enable_gpio); 191 if (err != -ENOENT) { 192 dev_err(dev, "failed to request GPIO: %d\n", err); 193 return err; 194 } 195 196 panel->enable_gpio = NULL; 197 } else { 198 err = gpiod_direction_output(panel->enable_gpio, 0); 199 if (err < 0) { 200 dev_err(dev, "failed to setup GPIO: %d\n", err); 201 return err; 202 } 203 } 204 205 backlight = of_parse_phandle(dev->of_node, "backlight", 0); 206 if (backlight) { 207 panel->backlight = of_find_backlight_by_node(backlight); 208 of_node_put(backlight); 209 210 if (!panel->backlight) 211 return -EPROBE_DEFER; 212 } 213 214 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); 215 if (ddc) { 216 panel->ddc = of_find_i2c_adapter_by_node(ddc); 217 of_node_put(ddc); 218 219 if (!panel->ddc) { 220 err = -EPROBE_DEFER; 221 goto free_backlight; 222 } 223 } 224 225 drm_panel_init(&panel->base); 226 panel->base.dev = dev; 227 panel->base.funcs = &panel_simple_funcs; 228 229 err = drm_panel_add(&panel->base); 230 if (err < 0) 231 goto free_ddc; 232 233 dev_set_drvdata(dev, panel); 234 235 return 0; 236 237 free_ddc: 238 if (panel->ddc) 239 put_device(&panel->ddc->dev); 240 free_backlight: 241 if (panel->backlight) 242 put_device(&panel->backlight->dev); 243 244 return err; 245 } 246 247 static int panel_simple_remove(struct device *dev) 248 { 249 struct panel_simple *panel = dev_get_drvdata(dev); 250 251 drm_panel_detach(&panel->base); 252 drm_panel_remove(&panel->base); 253 254 panel_simple_disable(&panel->base); 255 256 if (panel->ddc) 257 put_device(&panel->ddc->dev); 258 259 if (panel->backlight) 260 put_device(&panel->backlight->dev); 261 262 return 0; 263 } 264 265 static void panel_simple_shutdown(struct device *dev) 266 { 267 struct panel_simple *panel = dev_get_drvdata(dev); 268 269 panel_simple_disable(&panel->base); 270 } 271 272 static const struct drm_display_mode auo_b101aw03_mode = { 273 .clock = 51450, 274 .hdisplay = 1024, 275 .hsync_start = 1024 + 156, 276 .hsync_end = 1024 + 156 + 8, 277 .htotal = 1024 + 156 + 8 + 156, 278 .vdisplay = 600, 279 .vsync_start = 600 + 16, 280 .vsync_end = 600 + 16 + 6, 281 .vtotal = 600 + 16 + 6 + 16, 282 .vrefresh = 60, 283 }; 284 285 static const struct panel_desc auo_b101aw03 = { 286 .modes = &auo_b101aw03_mode, 287 .num_modes = 1, 288 .size = { 289 .width = 223, 290 .height = 125, 291 }, 292 }; 293 294 static const struct drm_display_mode auo_b133xtn01_mode = { 295 .clock = 69500, 296 .hdisplay = 1366, 297 .hsync_start = 1366 + 48, 298 .hsync_end = 1366 + 48 + 32, 299 .htotal = 1366 + 48 + 32 + 20, 300 .vdisplay = 768, 301 .vsync_start = 768 + 3, 302 .vsync_end = 768 + 3 + 6, 303 .vtotal = 768 + 3 + 6 + 13, 304 .vrefresh = 60, 305 }; 306 307 static const struct panel_desc auo_b133xtn01 = { 308 .modes = &auo_b133xtn01_mode, 309 .num_modes = 1, 310 .size = { 311 .width = 293, 312 .height = 165, 313 }, 314 }; 315 316 static const struct drm_display_mode chunghwa_claa101wa01a_mode = { 317 .clock = 72070, 318 .hdisplay = 1366, 319 .hsync_start = 1366 + 58, 320 .hsync_end = 1366 + 58 + 58, 321 .htotal = 1366 + 58 + 58 + 58, 322 .vdisplay = 768, 323 .vsync_start = 768 + 4, 324 .vsync_end = 768 + 4 + 4, 325 .vtotal = 768 + 4 + 4 + 4, 326 .vrefresh = 60, 327 }; 328 329 static const struct panel_desc chunghwa_claa101wa01a = { 330 .modes = &chunghwa_claa101wa01a_mode, 331 .num_modes = 1, 332 .size = { 333 .width = 220, 334 .height = 120, 335 }, 336 }; 337 338 static const struct drm_display_mode chunghwa_claa101wb01_mode = { 339 .clock = 69300, 340 .hdisplay = 1366, 341 .hsync_start = 1366 + 48, 342 .hsync_end = 1366 + 48 + 32, 343 .htotal = 1366 + 48 + 32 + 20, 344 .vdisplay = 768, 345 .vsync_start = 768 + 16, 346 .vsync_end = 768 + 16 + 8, 347 .vtotal = 768 + 16 + 8 + 16, 348 .vrefresh = 60, 349 }; 350 351 static const struct panel_desc chunghwa_claa101wb01 = { 352 .modes = &chunghwa_claa101wb01_mode, 353 .num_modes = 1, 354 .size = { 355 .width = 223, 356 .height = 125, 357 }, 358 }; 359 360 static const struct drm_display_mode edt_et057090dhu_mode = { 361 .clock = 25175, 362 .hdisplay = 640, 363 .hsync_start = 640 + 16, 364 .hsync_end = 640 + 16 + 30, 365 .htotal = 640 + 16 + 30 + 114, 366 .vdisplay = 480, 367 .vsync_start = 480 + 10, 368 .vsync_end = 480 + 10 + 3, 369 .vtotal = 480 + 10 + 3 + 32, 370 .vrefresh = 60, 371 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 372 }; 373 374 static const struct panel_desc edt_et057090dhu = { 375 .modes = &edt_et057090dhu_mode, 376 .num_modes = 1, 377 .size = { 378 .width = 115, 379 .height = 86, 380 }, 381 }; 382 383 static const struct drm_display_mode edt_etm0700g0dh6_mode = { 384 .clock = 33260, 385 .hdisplay = 800, 386 .hsync_start = 800 + 40, 387 .hsync_end = 800 + 40 + 128, 388 .htotal = 800 + 40 + 128 + 88, 389 .vdisplay = 480, 390 .vsync_start = 480 + 10, 391 .vsync_end = 480 + 10 + 2, 392 .vtotal = 480 + 10 + 2 + 33, 393 .vrefresh = 60, 394 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 395 }; 396 397 static const struct panel_desc edt_etm0700g0dh6 = { 398 .modes = &edt_etm0700g0dh6_mode, 399 .num_modes = 1, 400 .size = { 401 .width = 152, 402 .height = 91, 403 }, 404 }; 405 406 static const struct drm_display_mode lg_lp129qe_mode = { 407 .clock = 285250, 408 .hdisplay = 2560, 409 .hsync_start = 2560 + 48, 410 .hsync_end = 2560 + 48 + 32, 411 .htotal = 2560 + 48 + 32 + 80, 412 .vdisplay = 1700, 413 .vsync_start = 1700 + 3, 414 .vsync_end = 1700 + 3 + 10, 415 .vtotal = 1700 + 3 + 10 + 36, 416 .vrefresh = 60, 417 }; 418 419 static const struct panel_desc lg_lp129qe = { 420 .modes = &lg_lp129qe_mode, 421 .num_modes = 1, 422 .size = { 423 .width = 272, 424 .height = 181, 425 }, 426 }; 427 428 static const struct drm_display_mode samsung_ltn101nt05_mode = { 429 .clock = 54030, 430 .hdisplay = 1024, 431 .hsync_start = 1024 + 24, 432 .hsync_end = 1024 + 24 + 136, 433 .htotal = 1024 + 24 + 136 + 160, 434 .vdisplay = 600, 435 .vsync_start = 600 + 3, 436 .vsync_end = 600 + 3 + 6, 437 .vtotal = 600 + 3 + 6 + 61, 438 .vrefresh = 60, 439 }; 440 441 static const struct panel_desc samsung_ltn101nt05 = { 442 .modes = &samsung_ltn101nt05_mode, 443 .num_modes = 1, 444 .size = { 445 .width = 1024, 446 .height = 600, 447 }, 448 }; 449 450 static const struct of_device_id platform_of_match[] = { 451 { 452 .compatible = "auo,b101aw03", 453 .data = &auo_b101aw03, 454 }, { 455 .compatible = "auo,b133xtn01", 456 .data = &auo_b133xtn01, 457 }, { 458 .compatible = "chunghwa,claa101wa01a", 459 .data = &chunghwa_claa101wa01a 460 }, { 461 .compatible = "chunghwa,claa101wb01", 462 .data = &chunghwa_claa101wb01 463 }, { 464 .compatible = "edt,et057090dhu", 465 .data = &edt_et057090dhu, 466 }, { 467 .compatible = "edt,et070080dh6", 468 .data = &edt_etm0700g0dh6, 469 }, { 470 .compatible = "edt,etm0700g0dh6", 471 .data = &edt_etm0700g0dh6, 472 }, { 473 .compatible = "lg,lp129qe", 474 .data = &lg_lp129qe, 475 }, { 476 .compatible = "samsung,ltn101nt05", 477 .data = &samsung_ltn101nt05, 478 }, { 479 .compatible = "simple-panel", 480 }, { 481 /* sentinel */ 482 } 483 }; 484 MODULE_DEVICE_TABLE(of, platform_of_match); 485 486 static int panel_simple_platform_probe(struct platform_device *pdev) 487 { 488 const struct of_device_id *id; 489 490 id = of_match_node(platform_of_match, pdev->dev.of_node); 491 if (!id) 492 return -ENODEV; 493 494 return panel_simple_probe(&pdev->dev, id->data); 495 } 496 497 static int panel_simple_platform_remove(struct platform_device *pdev) 498 { 499 return panel_simple_remove(&pdev->dev); 500 } 501 502 static void panel_simple_platform_shutdown(struct platform_device *pdev) 503 { 504 panel_simple_shutdown(&pdev->dev); 505 } 506 507 static struct platform_driver panel_simple_platform_driver = { 508 .driver = { 509 .name = "panel-simple", 510 .owner = THIS_MODULE, 511 .of_match_table = platform_of_match, 512 }, 513 .probe = panel_simple_platform_probe, 514 .remove = panel_simple_platform_remove, 515 .shutdown = panel_simple_platform_shutdown, 516 }; 517 518 struct panel_desc_dsi { 519 struct panel_desc desc; 520 521 unsigned long flags; 522 enum mipi_dsi_pixel_format format; 523 unsigned int lanes; 524 }; 525 526 static const struct drm_display_mode lg_ld070wx3_sl01_mode = { 527 .clock = 71000, 528 .hdisplay = 800, 529 .hsync_start = 800 + 32, 530 .hsync_end = 800 + 32 + 1, 531 .htotal = 800 + 32 + 1 + 57, 532 .vdisplay = 1280, 533 .vsync_start = 1280 + 28, 534 .vsync_end = 1280 + 28 + 1, 535 .vtotal = 1280 + 28 + 1 + 14, 536 .vrefresh = 60, 537 }; 538 539 static const struct panel_desc_dsi lg_ld070wx3_sl01 = { 540 .desc = { 541 .modes = &lg_ld070wx3_sl01_mode, 542 .num_modes = 1, 543 .size = { 544 .width = 94, 545 .height = 151, 546 }, 547 }, 548 .flags = MIPI_DSI_MODE_VIDEO, 549 .format = MIPI_DSI_FMT_RGB888, 550 .lanes = 4, 551 }; 552 553 static const struct drm_display_mode lg_lh500wx1_sd03_mode = { 554 .clock = 67000, 555 .hdisplay = 720, 556 .hsync_start = 720 + 12, 557 .hsync_end = 720 + 12 + 4, 558 .htotal = 720 + 12 + 4 + 112, 559 .vdisplay = 1280, 560 .vsync_start = 1280 + 8, 561 .vsync_end = 1280 + 8 + 4, 562 .vtotal = 1280 + 8 + 4 + 12, 563 .vrefresh = 60, 564 }; 565 566 static const struct panel_desc_dsi lg_lh500wx1_sd03 = { 567 .desc = { 568 .modes = &lg_lh500wx1_sd03_mode, 569 .num_modes = 1, 570 .size = { 571 .width = 62, 572 .height = 110, 573 }, 574 }, 575 .flags = MIPI_DSI_MODE_VIDEO, 576 .format = MIPI_DSI_FMT_RGB888, 577 .lanes = 4, 578 }; 579 580 static const struct drm_display_mode panasonic_vvx10f004b00_mode = { 581 .clock = 157200, 582 .hdisplay = 1920, 583 .hsync_start = 1920 + 154, 584 .hsync_end = 1920 + 154 + 16, 585 .htotal = 1920 + 154 + 16 + 32, 586 .vdisplay = 1200, 587 .vsync_start = 1200 + 17, 588 .vsync_end = 1200 + 17 + 2, 589 .vtotal = 1200 + 17 + 2 + 16, 590 .vrefresh = 60, 591 }; 592 593 static const struct panel_desc_dsi panasonic_vvx10f004b00 = { 594 .desc = { 595 .modes = &panasonic_vvx10f004b00_mode, 596 .num_modes = 1, 597 .size = { 598 .width = 217, 599 .height = 136, 600 }, 601 }, 602 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE, 603 .format = MIPI_DSI_FMT_RGB888, 604 .lanes = 4, 605 }; 606 607 static const struct of_device_id dsi_of_match[] = { 608 { 609 .compatible = "lg,ld070wx3-sl01", 610 .data = &lg_ld070wx3_sl01 611 }, { 612 .compatible = "lg,lh500wx1-sd03", 613 .data = &lg_lh500wx1_sd03 614 }, { 615 .compatible = "panasonic,vvx10f004b00", 616 .data = &panasonic_vvx10f004b00 617 }, { 618 /* sentinel */ 619 } 620 }; 621 MODULE_DEVICE_TABLE(of, dsi_of_match); 622 623 static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi) 624 { 625 const struct panel_desc_dsi *desc; 626 const struct of_device_id *id; 627 int err; 628 629 id = of_match_node(dsi_of_match, dsi->dev.of_node); 630 if (!id) 631 return -ENODEV; 632 633 desc = id->data; 634 635 err = panel_simple_probe(&dsi->dev, &desc->desc); 636 if (err < 0) 637 return err; 638 639 dsi->mode_flags = desc->flags; 640 dsi->format = desc->format; 641 dsi->lanes = desc->lanes; 642 643 return mipi_dsi_attach(dsi); 644 } 645 646 static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi) 647 { 648 int err; 649 650 err = mipi_dsi_detach(dsi); 651 if (err < 0) 652 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); 653 654 return panel_simple_remove(&dsi->dev); 655 } 656 657 static void panel_simple_dsi_shutdown(struct mipi_dsi_device *dsi) 658 { 659 panel_simple_shutdown(&dsi->dev); 660 } 661 662 static struct mipi_dsi_driver panel_simple_dsi_driver = { 663 .driver = { 664 .name = "panel-simple-dsi", 665 .owner = THIS_MODULE, 666 .of_match_table = dsi_of_match, 667 }, 668 .probe = panel_simple_dsi_probe, 669 .remove = panel_simple_dsi_remove, 670 .shutdown = panel_simple_dsi_shutdown, 671 }; 672 673 static int __init panel_simple_init(void) 674 { 675 int err; 676 677 err = platform_driver_register(&panel_simple_platform_driver); 678 if (err < 0) 679 return err; 680 681 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 682 err = mipi_dsi_driver_register(&panel_simple_dsi_driver); 683 if (err < 0) 684 return err; 685 } 686 687 return 0; 688 } 689 module_init(panel_simple_init); 690 691 static void __exit panel_simple_exit(void) 692 { 693 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 694 mipi_dsi_driver_unregister(&panel_simple_dsi_driver); 695 696 platform_driver_unregister(&panel_simple_platform_driver); 697 } 698 module_exit(panel_simple_exit); 699 700 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 701 MODULE_DESCRIPTION("DRM Driver for Simple Panels"); 702 MODULE_LICENSE("GPL and additional rights"); 703