panel-simple.c revision 102932b0e474bb33061e88bcf5d83e66f10c1da2
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 36struct 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 46struct 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 59static inline struct panel_simple *to_panel_simple(struct drm_panel *panel) 60{ 61 return container_of(panel, struct panel_simple, base); 62} 63 64static 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 96static 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 117static 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 144static 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 165static 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 171static 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 237free_ddc: 238 if (panel->ddc) 239 put_device(&panel->ddc->dev); 240free_backlight: 241 if (panel->backlight) 242 put_device(&panel->backlight->dev); 243 244 return err; 245} 246 247static 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 265static 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 272static 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 285static 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 294static 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 307static 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 316static 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 329static 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 338static 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 351static 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 360static 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 374static 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 383static 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 397static 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 406static const struct drm_display_mode foxlink_fl500wvr00_a0t_mode = { 407 .clock = 32260, 408 .hdisplay = 800, 409 .hsync_start = 800 + 168, 410 .hsync_end = 800 + 168 + 64, 411 .htotal = 800 + 168 + 64 + 88, 412 .vdisplay = 480, 413 .vsync_start = 480 + 37, 414 .vsync_end = 480 + 37 + 2, 415 .vtotal = 480 + 37 + 2 + 8, 416 .vrefresh = 60, 417}; 418 419static const struct panel_desc foxlink_fl500wvr00_a0t = { 420 .modes = &foxlink_fl500wvr00_a0t_mode, 421 .num_modes = 1, 422 .size = { 423 .width = 108, 424 .height = 65, 425 }, 426}; 427 428static const struct drm_display_mode lg_lp129qe_mode = { 429 .clock = 285250, 430 .hdisplay = 2560, 431 .hsync_start = 2560 + 48, 432 .hsync_end = 2560 + 48 + 32, 433 .htotal = 2560 + 48 + 32 + 80, 434 .vdisplay = 1700, 435 .vsync_start = 1700 + 3, 436 .vsync_end = 1700 + 3 + 10, 437 .vtotal = 1700 + 3 + 10 + 36, 438 .vrefresh = 60, 439}; 440 441static const struct panel_desc lg_lp129qe = { 442 .modes = &lg_lp129qe_mode, 443 .num_modes = 1, 444 .size = { 445 .width = 272, 446 .height = 181, 447 }, 448}; 449 450static const struct drm_display_mode samsung_ltn101nt05_mode = { 451 .clock = 54030, 452 .hdisplay = 1024, 453 .hsync_start = 1024 + 24, 454 .hsync_end = 1024 + 24 + 136, 455 .htotal = 1024 + 24 + 136 + 160, 456 .vdisplay = 600, 457 .vsync_start = 600 + 3, 458 .vsync_end = 600 + 3 + 6, 459 .vtotal = 600 + 3 + 6 + 61, 460 .vrefresh = 60, 461}; 462 463static const struct panel_desc samsung_ltn101nt05 = { 464 .modes = &samsung_ltn101nt05_mode, 465 .num_modes = 1, 466 .size = { 467 .width = 1024, 468 .height = 600, 469 }, 470}; 471 472static const struct of_device_id platform_of_match[] = { 473 { 474 .compatible = "auo,b101aw03", 475 .data = &auo_b101aw03, 476 }, { 477 .compatible = "auo,b133xtn01", 478 .data = &auo_b133xtn01, 479 }, { 480 .compatible = "chunghwa,claa101wa01a", 481 .data = &chunghwa_claa101wa01a 482 }, { 483 .compatible = "chunghwa,claa101wb01", 484 .data = &chunghwa_claa101wb01 485 }, { 486 .compatible = "edt,et057090dhu", 487 .data = &edt_et057090dhu, 488 }, { 489 .compatible = "edt,et070080dh6", 490 .data = &edt_etm0700g0dh6, 491 }, { 492 .compatible = "edt,etm0700g0dh6", 493 .data = &edt_etm0700g0dh6, 494 }, { 495 .compatible = "foxlink,fl500wvr00-a0t", 496 .data = &foxlink_fl500wvr00_a0t, 497 }, { 498 .compatible = "lg,lp129qe", 499 .data = &lg_lp129qe, 500 }, { 501 .compatible = "samsung,ltn101nt05", 502 .data = &samsung_ltn101nt05, 503 }, { 504 .compatible = "simple-panel", 505 }, { 506 /* sentinel */ 507 } 508}; 509MODULE_DEVICE_TABLE(of, platform_of_match); 510 511static int panel_simple_platform_probe(struct platform_device *pdev) 512{ 513 const struct of_device_id *id; 514 515 id = of_match_node(platform_of_match, pdev->dev.of_node); 516 if (!id) 517 return -ENODEV; 518 519 return panel_simple_probe(&pdev->dev, id->data); 520} 521 522static int panel_simple_platform_remove(struct platform_device *pdev) 523{ 524 return panel_simple_remove(&pdev->dev); 525} 526 527static void panel_simple_platform_shutdown(struct platform_device *pdev) 528{ 529 panel_simple_shutdown(&pdev->dev); 530} 531 532static struct platform_driver panel_simple_platform_driver = { 533 .driver = { 534 .name = "panel-simple", 535 .owner = THIS_MODULE, 536 .of_match_table = platform_of_match, 537 }, 538 .probe = panel_simple_platform_probe, 539 .remove = panel_simple_platform_remove, 540 .shutdown = panel_simple_platform_shutdown, 541}; 542 543struct panel_desc_dsi { 544 struct panel_desc desc; 545 546 unsigned long flags; 547 enum mipi_dsi_pixel_format format; 548 unsigned int lanes; 549}; 550 551static const struct drm_display_mode lg_ld070wx3_sl01_mode = { 552 .clock = 71000, 553 .hdisplay = 800, 554 .hsync_start = 800 + 32, 555 .hsync_end = 800 + 32 + 1, 556 .htotal = 800 + 32 + 1 + 57, 557 .vdisplay = 1280, 558 .vsync_start = 1280 + 28, 559 .vsync_end = 1280 + 28 + 1, 560 .vtotal = 1280 + 28 + 1 + 14, 561 .vrefresh = 60, 562}; 563 564static const struct panel_desc_dsi lg_ld070wx3_sl01 = { 565 .desc = { 566 .modes = &lg_ld070wx3_sl01_mode, 567 .num_modes = 1, 568 .size = { 569 .width = 94, 570 .height = 151, 571 }, 572 }, 573 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_CLOCK_NON_CONTINUOUS, 574 .format = MIPI_DSI_FMT_RGB888, 575 .lanes = 4, 576}; 577 578static const struct drm_display_mode lg_lh500wx1_sd03_mode = { 579 .clock = 67000, 580 .hdisplay = 720, 581 .hsync_start = 720 + 12, 582 .hsync_end = 720 + 12 + 4, 583 .htotal = 720 + 12 + 4 + 112, 584 .vdisplay = 1280, 585 .vsync_start = 1280 + 8, 586 .vsync_end = 1280 + 8 + 4, 587 .vtotal = 1280 + 8 + 4 + 12, 588 .vrefresh = 60, 589}; 590 591static const struct panel_desc_dsi lg_lh500wx1_sd03 = { 592 .desc = { 593 .modes = &lg_lh500wx1_sd03_mode, 594 .num_modes = 1, 595 .size = { 596 .width = 62, 597 .height = 110, 598 }, 599 }, 600 .flags = MIPI_DSI_MODE_VIDEO, 601 .format = MIPI_DSI_FMT_RGB888, 602 .lanes = 4, 603}; 604 605static const struct drm_display_mode panasonic_vvx10f004b00_mode = { 606 .clock = 157200, 607 .hdisplay = 1920, 608 .hsync_start = 1920 + 154, 609 .hsync_end = 1920 + 154 + 16, 610 .htotal = 1920 + 154 + 16 + 32, 611 .vdisplay = 1200, 612 .vsync_start = 1200 + 17, 613 .vsync_end = 1200 + 17 + 2, 614 .vtotal = 1200 + 17 + 2 + 16, 615 .vrefresh = 60, 616}; 617 618static const struct panel_desc_dsi panasonic_vvx10f004b00 = { 619 .desc = { 620 .modes = &panasonic_vvx10f004b00_mode, 621 .num_modes = 1, 622 .size = { 623 .width = 217, 624 .height = 136, 625 }, 626 }, 627 .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | 628 MIPI_DSI_CLOCK_NON_CONTINUOUS, 629 .format = MIPI_DSI_FMT_RGB888, 630 .lanes = 4, 631}; 632 633static const struct of_device_id dsi_of_match[] = { 634 { 635 .compatible = "lg,ld070wx3-sl01", 636 .data = &lg_ld070wx3_sl01 637 }, { 638 .compatible = "lg,lh500wx1-sd03", 639 .data = &lg_lh500wx1_sd03 640 }, { 641 .compatible = "panasonic,vvx10f004b00", 642 .data = &panasonic_vvx10f004b00 643 }, { 644 /* sentinel */ 645 } 646}; 647MODULE_DEVICE_TABLE(of, dsi_of_match); 648 649static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi) 650{ 651 const struct panel_desc_dsi *desc; 652 const struct of_device_id *id; 653 int err; 654 655 id = of_match_node(dsi_of_match, dsi->dev.of_node); 656 if (!id) 657 return -ENODEV; 658 659 desc = id->data; 660 661 err = panel_simple_probe(&dsi->dev, &desc->desc); 662 if (err < 0) 663 return err; 664 665 dsi->mode_flags = desc->flags; 666 dsi->format = desc->format; 667 dsi->lanes = desc->lanes; 668 669 return mipi_dsi_attach(dsi); 670} 671 672static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi) 673{ 674 int err; 675 676 err = mipi_dsi_detach(dsi); 677 if (err < 0) 678 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); 679 680 return panel_simple_remove(&dsi->dev); 681} 682 683static void panel_simple_dsi_shutdown(struct mipi_dsi_device *dsi) 684{ 685 panel_simple_shutdown(&dsi->dev); 686} 687 688static struct mipi_dsi_driver panel_simple_dsi_driver = { 689 .driver = { 690 .name = "panel-simple-dsi", 691 .owner = THIS_MODULE, 692 .of_match_table = dsi_of_match, 693 }, 694 .probe = panel_simple_dsi_probe, 695 .remove = panel_simple_dsi_remove, 696 .shutdown = panel_simple_dsi_shutdown, 697}; 698 699static int __init panel_simple_init(void) 700{ 701 int err; 702 703 err = platform_driver_register(&panel_simple_platform_driver); 704 if (err < 0) 705 return err; 706 707 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) { 708 err = mipi_dsi_driver_register(&panel_simple_dsi_driver); 709 if (err < 0) 710 return err; 711 } 712 713 return 0; 714} 715module_init(panel_simple_init); 716 717static void __exit panel_simple_exit(void) 718{ 719 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) 720 mipi_dsi_driver_unregister(&panel_simple_dsi_driver); 721 722 platform_driver_unregister(&panel_simple_platform_driver); 723} 724module_exit(panel_simple_exit); 725 726MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 727MODULE_DESCRIPTION("DRM Driver for Simple Panels"); 728MODULE_LICENSE("GPL and additional rights"); 729