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/debugfs.h> 25 #include <linux/delay.h> 26 #include <linux/gpio/consumer.h> 27 #include <linux/iopoll.h> 28 #include <linux/module.h> 29 #include <linux/of_platform.h> 30 #include <linux/platform_device.h> 31 #include <linux/pm_runtime.h> 32 #include <linux/regulator/consumer.h> 33 34 #include <video/display_timing.h> 35 #include <video/of_display_timing.h> 36 #include <video/videomode.h> 37 38 #include <drm/display/drm_dp_aux_bus.h> 39 #include <drm/display/drm_dp_helper.h> 40 #include <drm/drm_crtc.h> 41 #include <drm/drm_device.h> 42 #include <drm/drm_edid.h> 43 #include <drm/drm_panel.h> 44 45 /** 46 * struct panel_delay - Describes delays for a simple panel. 47 */ 48 struct panel_delay { 49 /** 50 * @hpd_reliable: Time for HPD to be reliable 51 * 52 * The time (in milliseconds) that it takes after powering the panel 53 * before the HPD signal is reliable. Ideally this is 0 but some panels, 54 * board designs, or bad pulldown configs can cause a glitch here. 55 * 56 * NOTE: on some old panel data this number appears to be much too big. 57 * Presumably some old panels simply didn't have HPD hooked up and put 58 * the hpd_absent here because this field predates the 59 * hpd_absent. While that works, it's non-ideal. 60 */ 61 unsigned int hpd_reliable; 62 63 /** 64 * @hpd_absent: Time to wait if HPD isn't hooked up. 65 * 66 * Add this to the prepare delay if we know Hot Plug Detect isn't used. 67 * 68 * This is T3-max on eDP timing diagrams or the delay from power on 69 * until HPD is guaranteed to be asserted. 70 */ 71 unsigned int hpd_absent; 72 73 /** 74 * @powered_on_to_enable: Time between panel powered on and enable. 75 * 76 * The minimum time, in milliseconds, that needs to have passed 77 * between when panel powered on and enable may begin. 78 * 79 * This is (T3+T4+T5+T6+T8)-min on eDP timing diagrams or after the 80 * power supply enabled until we can turn the backlight on and see 81 * valid data. 82 * 83 * This doesn't normally need to be set if timings are already met by 84 * prepare_to_enable or enable. 85 */ 86 unsigned int powered_on_to_enable; 87 88 /** 89 * @prepare_to_enable: Time between prepare and enable. 90 * 91 * The minimum time, in milliseconds, that needs to have passed 92 * between when prepare finished and enable may begin. If at 93 * enable time less time has passed since prepare finished, 94 * the driver waits for the remaining time. 95 * 96 * If a fixed enable delay is also specified, we'll start 97 * counting before delaying for the fixed delay. 98 * 99 * If a fixed prepare delay is also specified, we won't start 100 * counting until after the fixed delay. We can't overlap this 101 * fixed delay with the min time because the fixed delay 102 * doesn't happen at the end of the function if a HPD GPIO was 103 * specified. 104 * 105 * In other words: 106 * prepare() 107 * ... 108 * // do fixed prepare delay 109 * // wait for HPD GPIO if applicable 110 * // start counting for prepare_to_enable 111 * 112 * enable() 113 * // do fixed enable delay 114 * // enforce prepare_to_enable min time 115 * 116 * This is not specified in a standard way on eDP timing diagrams. 117 * It is effectively the time from HPD going high till you can 118 * turn on the backlight. 119 */ 120 unsigned int prepare_to_enable; 121 122 /** 123 * @enable: Time for the panel to display a valid frame. 124 * 125 * The time (in milliseconds) that it takes for the panel to 126 * display the first valid frame after starting to receive 127 * video data. 128 * 129 * This is (T6-min + max(T7-max, T8-min)) on eDP timing diagrams or 130 * the delay after link training finishes until we can turn the 131 * backlight on and see valid data. 132 */ 133 unsigned int enable; 134 135 /** 136 * @disable: Time for the panel to turn the display off. 137 * 138 * The time (in milliseconds) that it takes for the panel to 139 * turn the display off (no content is visible). 140 * 141 * This is T9-min (delay from backlight off to end of valid video 142 * data) on eDP timing diagrams. It is not common to set. 143 */ 144 unsigned int disable; 145 146 /** 147 * @unprepare: Time to power down completely. 148 * 149 * The time (in milliseconds) that it takes for the panel 150 * to power itself down completely. 151 * 152 * This time is used to prevent a future "prepare" from 153 * starting until at least this many milliseconds has passed. 154 * If at prepare time less time has passed since unprepare 155 * finished, the driver waits for the remaining time. 156 * 157 * This is T12-min on eDP timing diagrams. 158 */ 159 unsigned int unprepare; 160 }; 161 162 /** 163 * struct panel_desc - Describes a simple panel. 164 */ 165 struct panel_desc { 166 /** 167 * @modes: Pointer to array of fixed modes appropriate for this panel. 168 * 169 * If only one mode then this can just be the address of the mode. 170 * NOTE: cannot be used with "timings" and also if this is specified 171 * then you cannot override the mode in the device tree. 172 */ 173 const struct drm_display_mode *modes; 174 175 /** @num_modes: Number of elements in modes array. */ 176 unsigned int num_modes; 177 178 /** 179 * @timings: Pointer to array of display timings 180 * 181 * NOTE: cannot be used with "modes" and also these will be used to 182 * validate a device tree override if one is present. 183 */ 184 const struct display_timing *timings; 185 186 /** @num_timings: Number of elements in timings array. */ 187 unsigned int num_timings; 188 189 /** @bpc: Bits per color. */ 190 unsigned int bpc; 191 192 /** @size: Structure containing the physical size of this panel. */ 193 struct { 194 /** 195 * @size.width: Width (in mm) of the active display area. 196 */ 197 unsigned int width; 198 199 /** 200 * @size.height: Height (in mm) of the active display area. 201 */ 202 unsigned int height; 203 } size; 204 205 /** @delay: Structure containing various delay values for this panel. */ 206 struct panel_delay delay; 207 }; 208 209 /** 210 * struct edp_panel_entry - Maps panel ID to delay / panel name. 211 */ 212 struct edp_panel_entry { 213 /** @ident: edid identity used for panel matching. */ 214 const struct drm_edid_ident ident; 215 216 /** @delay: The power sequencing delays needed for this panel. */ 217 const struct panel_delay *delay; 218 219 /** @override_edid_mode: Override the mode obtained by edid. */ 220 const struct drm_display_mode *override_edid_mode; 221 }; 222 223 struct panel_edp { 224 struct drm_panel base; 225 bool no_hpd; 226 227 ktime_t prepared_time; 228 ktime_t powered_on_time; 229 ktime_t unprepared_time; 230 231 const struct panel_desc *desc; 232 233 struct regulator *supply; 234 struct i2c_adapter *ddc; 235 struct drm_dp_aux *aux; 236 237 struct gpio_desc *enable_gpio; 238 struct gpio_desc *hpd_gpio; 239 240 const struct edp_panel_entry *detected_panel; 241 242 const struct drm_edid *drm_edid; 243 244 struct drm_display_mode override_mode; 245 246 enum drm_panel_orientation orientation; 247 }; 248 249 static inline struct panel_edp *to_panel_edp(struct drm_panel *panel) 250 { 251 return container_of(panel, struct panel_edp, base); 252 } 253 254 static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel, 255 struct drm_connector *connector) 256 { 257 struct drm_display_mode *mode; 258 unsigned int i, num = 0; 259 260 for (i = 0; i < panel->desc->num_timings; i++) { 261 const struct display_timing *dt = &panel->desc->timings[i]; 262 struct videomode vm; 263 264 videomode_from_timing(dt, &vm); 265 mode = drm_mode_create(connector->dev); 266 if (!mode) { 267 dev_err(panel->base.dev, "failed to add mode %ux%u\n", 268 dt->hactive.typ, dt->vactive.typ); 269 continue; 270 } 271 272 drm_display_mode_from_videomode(&vm, mode); 273 274 mode->type |= DRM_MODE_TYPE_DRIVER; 275 276 if (panel->desc->num_timings == 1) 277 mode->type |= DRM_MODE_TYPE_PREFERRED; 278 279 drm_mode_probed_add(connector, mode); 280 num++; 281 } 282 283 return num; 284 } 285 286 static unsigned int panel_edp_get_display_modes(struct panel_edp *panel, 287 struct drm_connector *connector) 288 { 289 struct drm_display_mode *mode; 290 unsigned int i, num = 0; 291 292 for (i = 0; i < panel->desc->num_modes; i++) { 293 const struct drm_display_mode *m = &panel->desc->modes[i]; 294 295 mode = drm_mode_duplicate(connector->dev, m); 296 if (!mode) { 297 dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n", 298 m->hdisplay, m->vdisplay, 299 drm_mode_vrefresh(m)); 300 continue; 301 } 302 303 mode->type |= DRM_MODE_TYPE_DRIVER; 304 305 if (panel->desc->num_modes == 1) 306 mode->type |= DRM_MODE_TYPE_PREFERRED; 307 308 drm_mode_set_name(mode); 309 310 drm_mode_probed_add(connector, mode); 311 num++; 312 } 313 314 return num; 315 } 316 317 static int panel_edp_override_edid_mode(struct panel_edp *panel, 318 struct drm_connector *connector, 319 const struct drm_display_mode *override_mode) 320 { 321 struct drm_display_mode *mode; 322 323 mode = drm_mode_duplicate(connector->dev, override_mode); 324 if (!mode) { 325 dev_err(panel->base.dev, "failed to add additional mode\n"); 326 return 0; 327 } 328 329 mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 330 drm_mode_set_name(mode); 331 drm_mode_probed_add(connector, mode); 332 return 1; 333 } 334 335 static int panel_edp_get_non_edid_modes(struct panel_edp *panel, 336 struct drm_connector *connector) 337 { 338 struct drm_display_mode *mode; 339 bool has_override = panel->override_mode.type; 340 unsigned int num = 0; 341 342 if (!panel->desc) 343 return 0; 344 345 if (has_override) { 346 mode = drm_mode_duplicate(connector->dev, 347 &panel->override_mode); 348 if (mode) { 349 drm_mode_probed_add(connector, mode); 350 num = 1; 351 } else { 352 dev_err(panel->base.dev, "failed to add override mode\n"); 353 } 354 } 355 356 /* Only add timings if override was not there or failed to validate */ 357 if (num == 0 && panel->desc->num_timings) 358 num = panel_edp_get_timings_modes(panel, connector); 359 360 /* 361 * Only add fixed modes if timings/override added no mode. 362 * 363 * We should only ever have either the display timings specified 364 * or a fixed mode. Anything else is rather bogus. 365 */ 366 WARN_ON(panel->desc->num_timings && panel->desc->num_modes); 367 if (num == 0) 368 num = panel_edp_get_display_modes(panel, connector); 369 370 connector->display_info.bpc = panel->desc->bpc; 371 connector->display_info.width_mm = panel->desc->size.width; 372 connector->display_info.height_mm = panel->desc->size.height; 373 374 return num; 375 } 376 377 static void panel_edp_wait(ktime_t start_ktime, unsigned int min_ms) 378 { 379 ktime_t now_ktime, min_ktime; 380 381 if (!min_ms) 382 return; 383 384 min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms)); 385 now_ktime = ktime_get_boottime(); 386 387 if (ktime_before(now_ktime, min_ktime)) 388 msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1); 389 } 390 391 static int panel_edp_disable(struct drm_panel *panel) 392 { 393 struct panel_edp *p = to_panel_edp(panel); 394 395 if (p->desc->delay.disable) 396 msleep(p->desc->delay.disable); 397 398 return 0; 399 } 400 401 static int panel_edp_suspend(struct device *dev) 402 { 403 struct panel_edp *p = dev_get_drvdata(dev); 404 405 drm_dp_dpcd_set_powered(p->aux, false); 406 gpiod_set_value_cansleep(p->enable_gpio, 0); 407 regulator_disable(p->supply); 408 p->unprepared_time = ktime_get_boottime(); 409 410 return 0; 411 } 412 413 static int panel_edp_unprepare(struct drm_panel *panel) 414 { 415 int ret; 416 417 ret = pm_runtime_put_sync_suspend(panel->dev); 418 if (ret < 0) 419 return ret; 420 421 return 0; 422 } 423 424 static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p) 425 { 426 p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); 427 if (IS_ERR(p->hpd_gpio)) 428 return dev_err_probe(dev, PTR_ERR(p->hpd_gpio), 429 "failed to get 'hpd' GPIO\n"); 430 431 return 0; 432 } 433 434 static bool panel_edp_can_read_hpd(struct panel_edp *p) 435 { 436 return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted)); 437 } 438 439 static int panel_edp_prepare_once(struct panel_edp *p) 440 { 441 struct device *dev = p->base.dev; 442 unsigned int delay; 443 int err; 444 int hpd_asserted; 445 unsigned long hpd_wait_us; 446 447 panel_edp_wait(p->unprepared_time, p->desc->delay.unprepare); 448 449 err = regulator_enable(p->supply); 450 if (err < 0) { 451 dev_err(dev, "failed to enable supply: %d\n", err); 452 return err; 453 } 454 455 gpiod_set_value_cansleep(p->enable_gpio, 1); 456 drm_dp_dpcd_set_powered(p->aux, true); 457 458 p->powered_on_time = ktime_get_boottime(); 459 460 delay = p->desc->delay.hpd_reliable; 461 if (p->no_hpd) 462 delay = max(delay, p->desc->delay.hpd_absent); 463 if (delay) 464 msleep(delay); 465 466 if (panel_edp_can_read_hpd(p)) { 467 if (p->desc->delay.hpd_absent) 468 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL; 469 else 470 hpd_wait_us = 2000000; 471 472 if (p->hpd_gpio) { 473 err = readx_poll_timeout(gpiod_get_value_cansleep, 474 p->hpd_gpio, hpd_asserted, 475 hpd_asserted, 1000, hpd_wait_us); 476 if (hpd_asserted < 0) 477 err = hpd_asserted; 478 } else { 479 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us); 480 } 481 482 if (err) { 483 if (err != -ETIMEDOUT) 484 dev_err(dev, 485 "error waiting for hpd GPIO: %d\n", err); 486 goto error; 487 } 488 } 489 490 p->prepared_time = ktime_get_boottime(); 491 492 return 0; 493 494 error: 495 drm_dp_dpcd_set_powered(p->aux, false); 496 gpiod_set_value_cansleep(p->enable_gpio, 0); 497 regulator_disable(p->supply); 498 p->unprepared_time = ktime_get_boottime(); 499 500 return err; 501 } 502 503 /* 504 * Some panels simply don't always come up and need to be power cycled to 505 * work properly. We'll allow for a handful of retries. 506 */ 507 #define MAX_PANEL_PREPARE_TRIES 5 508 509 static int panel_edp_resume(struct device *dev) 510 { 511 struct panel_edp *p = dev_get_drvdata(dev); 512 int ret; 513 int try; 514 515 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) { 516 ret = panel_edp_prepare_once(p); 517 if (ret != -ETIMEDOUT) 518 break; 519 } 520 521 if (ret == -ETIMEDOUT) 522 dev_err(dev, "Prepare timeout after %d tries\n", try); 523 else if (try) 524 dev_warn(dev, "Prepare needed %d retries\n", try); 525 526 return ret; 527 } 528 529 static int panel_edp_prepare(struct drm_panel *panel) 530 { 531 int ret; 532 533 ret = pm_runtime_get_sync(panel->dev); 534 if (ret < 0) { 535 pm_runtime_put_autosuspend(panel->dev); 536 return ret; 537 } 538 539 return 0; 540 } 541 542 static int panel_edp_enable(struct drm_panel *panel) 543 { 544 struct panel_edp *p = to_panel_edp(panel); 545 unsigned int delay; 546 547 delay = p->desc->delay.enable; 548 549 /* 550 * If there is a "prepare_to_enable" delay then that's supposed to be 551 * the delay from HPD going high until we can turn the backlight on. 552 * However, we can only count this if HPD is readable by the panel 553 * driver. 554 * 555 * If we aren't handling the HPD pin ourselves then the best we 556 * can do is assume that HPD went high immediately before we were 557 * called (and link training took zero time). Note that "no-hpd" 558 * actually counts as handling HPD ourselves since we're doing the 559 * worst case delay (in prepare) ourselves. 560 * 561 * NOTE: if we ever end up in this "if" statement then we're 562 * guaranteed that the panel_edp_wait() call below will do no delay. 563 * It already handles that case, though, so we don't need any special 564 * code for it. 565 */ 566 if (p->desc->delay.prepare_to_enable && 567 !panel_edp_can_read_hpd(p) && !p->no_hpd) 568 delay = max(delay, p->desc->delay.prepare_to_enable); 569 570 if (delay) 571 msleep(delay); 572 573 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable); 574 575 panel_edp_wait(p->powered_on_time, p->desc->delay.powered_on_to_enable); 576 577 return 0; 578 } 579 580 static int panel_edp_get_modes(struct drm_panel *panel, 581 struct drm_connector *connector) 582 { 583 struct panel_edp *p = to_panel_edp(panel); 584 int num = 0; 585 bool has_hard_coded_modes = p->desc->num_timings || p->desc->num_modes; 586 bool has_override_edid_mode = p->detected_panel && 587 p->detected_panel != ERR_PTR(-EINVAL) && 588 p->detected_panel->override_edid_mode; 589 590 /* probe EDID if a DDC bus is available */ 591 if (p->ddc) { 592 pm_runtime_get_sync(panel->dev); 593 594 if (!p->drm_edid) 595 p->drm_edid = drm_edid_read_ddc(connector, p->ddc); 596 597 drm_edid_connector_update(connector, p->drm_edid); 598 599 /* 600 * If both edid and hard-coded modes exists, skip edid modes to 601 * avoid multiple preferred modes. 602 */ 603 if (p->drm_edid && !has_hard_coded_modes) { 604 if (has_override_edid_mode) { 605 /* 606 * override_edid_mode is specified. Use 607 * override_edid_mode instead of from edid. 608 */ 609 num += panel_edp_override_edid_mode(p, connector, 610 p->detected_panel->override_edid_mode); 611 } else { 612 num += drm_edid_connector_add_modes(connector); 613 } 614 } 615 616 pm_runtime_mark_last_busy(panel->dev); 617 pm_runtime_put_autosuspend(panel->dev); 618 } 619 620 if (has_hard_coded_modes) 621 num += panel_edp_get_non_edid_modes(p, connector); 622 else if (!num) 623 dev_warn(p->base.dev, "No display modes\n"); 624 625 /* 626 * TODO: Remove once all drm drivers call 627 * drm_connector_set_orientation_from_panel() 628 */ 629 drm_connector_set_panel_orientation(connector, p->orientation); 630 631 return num; 632 } 633 634 static int panel_edp_get_timings(struct drm_panel *panel, 635 unsigned int num_timings, 636 struct display_timing *timings) 637 { 638 struct panel_edp *p = to_panel_edp(panel); 639 unsigned int i; 640 641 if (p->desc->num_timings < num_timings) 642 num_timings = p->desc->num_timings; 643 644 if (timings) 645 for (i = 0; i < num_timings; i++) 646 timings[i] = p->desc->timings[i]; 647 648 return p->desc->num_timings; 649 } 650 651 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel) 652 { 653 struct panel_edp *p = to_panel_edp(panel); 654 655 return p->orientation; 656 } 657 658 static int detected_panel_show(struct seq_file *s, void *data) 659 { 660 struct drm_panel *panel = s->private; 661 struct panel_edp *p = to_panel_edp(panel); 662 663 if (IS_ERR(p->detected_panel)) 664 seq_puts(s, "UNKNOWN\n"); 665 else if (!p->detected_panel) 666 seq_puts(s, "HARDCODED\n"); 667 else 668 seq_printf(s, "%s\n", p->detected_panel->ident.name); 669 670 return 0; 671 } 672 673 DEFINE_SHOW_ATTRIBUTE(detected_panel); 674 675 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root) 676 { 677 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops); 678 } 679 680 static const struct drm_panel_funcs panel_edp_funcs = { 681 .disable = panel_edp_disable, 682 .unprepare = panel_edp_unprepare, 683 .prepare = panel_edp_prepare, 684 .enable = panel_edp_enable, 685 .get_modes = panel_edp_get_modes, 686 .get_orientation = panel_edp_get_orientation, 687 .get_timings = panel_edp_get_timings, 688 .debugfs_init = panel_edp_debugfs_init, 689 }; 690 691 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \ 692 (to_check->field.typ >= bounds->field.min && \ 693 to_check->field.typ <= bounds->field.max) 694 static void panel_edp_parse_panel_timing_node(struct device *dev, 695 struct panel_edp *panel, 696 const struct display_timing *ot) 697 { 698 const struct panel_desc *desc = panel->desc; 699 struct videomode vm; 700 unsigned int i; 701 702 if (WARN_ON(desc->num_modes)) { 703 dev_err(dev, "Reject override mode: panel has a fixed mode\n"); 704 return; 705 } 706 if (WARN_ON(!desc->num_timings)) { 707 dev_err(dev, "Reject override mode: no timings specified\n"); 708 return; 709 } 710 711 for (i = 0; i < panel->desc->num_timings; i++) { 712 const struct display_timing *dt = &panel->desc->timings[i]; 713 714 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) || 715 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) || 716 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) || 717 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) || 718 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) || 719 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) || 720 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) || 721 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len)) 722 continue; 723 724 if (ot->flags != dt->flags) 725 continue; 726 727 videomode_from_timing(ot, &vm); 728 drm_display_mode_from_videomode(&vm, &panel->override_mode); 729 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER | 730 DRM_MODE_TYPE_PREFERRED; 731 break; 732 } 733 734 if (WARN_ON(!panel->override_mode.type)) 735 dev_err(dev, "Reject override mode: No display_timing found\n"); 736 } 737 738 static const struct edp_panel_entry *find_edp_panel(u32 panel_id, const struct drm_edid *edid); 739 740 static void panel_edp_set_conservative_timings(struct panel_edp *panel, struct panel_desc *desc) 741 { 742 /* 743 * It's highly likely that the panel will work if we use very 744 * conservative timings, so let's do that. 745 * 746 * Nearly all panels have a "unprepare" delay of 500 ms though 747 * there are a few with 1000. Let's stick 2000 in just to be 748 * super conservative. 749 * 750 * An "enable" delay of 80 ms seems the most common, but we'll 751 * throw in 200 ms to be safe. 752 */ 753 desc->delay.unprepare = 2000; 754 desc->delay.enable = 200; 755 756 panel->detected_panel = ERR_PTR(-EINVAL); 757 } 758 759 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel) 760 { 761 struct panel_desc *desc; 762 const struct drm_edid *base_block; 763 u32 panel_id; 764 char vend[4]; 765 u16 product_id; 766 u32 reliable_ms = 0; 767 u32 absent_ms = 0; 768 int ret; 769 770 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); 771 if (!desc) 772 return -ENOMEM; 773 panel->desc = desc; 774 775 /* 776 * Read the dts properties for the initial probe. These are used by 777 * the runtime resume code which will get called by the 778 * pm_runtime_get_sync() call below. 779 */ 780 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms); 781 desc->delay.hpd_reliable = reliable_ms; 782 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms); 783 desc->delay.hpd_absent = absent_ms; 784 785 /* Power the panel on so we can read the EDID */ 786 ret = pm_runtime_get_sync(dev); 787 if (ret < 0) { 788 dev_err(dev, 789 "Couldn't power on panel to ID it; using conservative timings: %d\n", 790 ret); 791 panel_edp_set_conservative_timings(panel, desc); 792 goto exit; 793 } 794 795 base_block = drm_edid_read_base_block(panel->ddc); 796 if (base_block) { 797 panel_id = drm_edid_get_panel_id(base_block); 798 } else { 799 dev_err(dev, "Couldn't read EDID for ID; using conservative timings\n"); 800 panel_edp_set_conservative_timings(panel, desc); 801 goto exit; 802 } 803 drm_edid_decode_panel_id(panel_id, vend, &product_id); 804 805 panel->detected_panel = find_edp_panel(panel_id, base_block); 806 807 drm_edid_free(base_block); 808 809 /* 810 * We're using non-optimized timings and want it really obvious that 811 * someone needs to add an entry to the table, so we'll do a WARN_ON 812 * splat. 813 */ 814 if (WARN_ON(!panel->detected_panel)) { 815 dev_warn(dev, 816 "Unknown panel %s %#06x, using conservative timings\n", 817 vend, product_id); 818 panel_edp_set_conservative_timings(panel, desc); 819 } else { 820 dev_info(dev, "Detected %s %s (%#06x)\n", 821 vend, panel->detected_panel->ident.name, product_id); 822 823 /* Update the delay; everything else comes from EDID */ 824 desc->delay = *panel->detected_panel->delay; 825 } 826 827 exit: 828 pm_runtime_mark_last_busy(dev); 829 pm_runtime_put_autosuspend(dev); 830 831 return 0; 832 } 833 834 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc, 835 struct drm_dp_aux *aux) 836 { 837 struct panel_edp *panel; 838 struct display_timing dt; 839 struct device_node *ddc; 840 int err; 841 842 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); 843 if (!panel) 844 return -ENOMEM; 845 846 panel->prepared_time = 0; 847 panel->desc = desc; 848 panel->aux = aux; 849 850 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd"); 851 if (!panel->no_hpd) { 852 err = panel_edp_get_hpd_gpio(dev, panel); 853 if (err) 854 return err; 855 } 856 857 panel->supply = devm_regulator_get(dev, "power"); 858 if (IS_ERR(panel->supply)) 859 return PTR_ERR(panel->supply); 860 861 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", 862 GPIOD_OUT_LOW); 863 if (IS_ERR(panel->enable_gpio)) 864 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio), 865 "failed to request GPIO\n"); 866 867 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); 868 if (err) { 869 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); 870 return err; 871 } 872 873 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); 874 if (ddc) { 875 panel->ddc = of_find_i2c_adapter_by_node(ddc); 876 of_node_put(ddc); 877 878 if (!panel->ddc) 879 return -EPROBE_DEFER; 880 } else if (aux) { 881 panel->ddc = &aux->ddc; 882 } 883 884 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt)) 885 panel_edp_parse_panel_timing_node(dev, panel, &dt); 886 887 dev_set_drvdata(dev, panel); 888 889 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP); 890 891 err = drm_panel_of_backlight(&panel->base); 892 if (err) 893 goto err_finished_ddc_init; 894 895 /* 896 * We use runtime PM for prepare / unprepare since those power the panel 897 * on and off and those can be very slow operations. This is important 898 * to optimize powering the panel on briefly to read the EDID before 899 * fully enabling the panel. 900 */ 901 pm_runtime_enable(dev); 902 pm_runtime_set_autosuspend_delay(dev, 1000); 903 pm_runtime_use_autosuspend(dev); 904 905 if (of_device_is_compatible(dev->of_node, "edp-panel")) { 906 err = generic_edp_panel_probe(dev, panel); 907 if (err) { 908 dev_err_probe(dev, err, 909 "Couldn't detect panel nor find a fallback\n"); 910 goto err_finished_pm_runtime; 911 } 912 /* generic_edp_panel_probe() replaces desc in the panel */ 913 desc = panel->desc; 914 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) { 915 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc); 916 } 917 918 if (!panel->base.backlight && panel->aux) { 919 pm_runtime_get_sync(dev); 920 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); 921 pm_runtime_mark_last_busy(dev); 922 pm_runtime_put_autosuspend(dev); 923 924 /* 925 * Warn if we get an error, but don't consider it fatal. Having 926 * a panel where we can't control the backlight is better than 927 * no panel. 928 */ 929 if (err) 930 dev_warn(dev, "failed to register dp aux backlight: %d\n", err); 931 } 932 933 drm_panel_add(&panel->base); 934 935 return 0; 936 937 err_finished_pm_runtime: 938 pm_runtime_dont_use_autosuspend(dev); 939 pm_runtime_disable(dev); 940 err_finished_ddc_init: 941 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 942 put_device(&panel->ddc->dev); 943 944 return err; 945 } 946 947 static void panel_edp_shutdown(struct device *dev) 948 { 949 struct panel_edp *panel = dev_get_drvdata(dev); 950 951 /* 952 * NOTE: the following two calls don't really belong here. It is the 953 * responsibility of a correctly written DRM modeset driver to call 954 * drm_atomic_helper_shutdown() at shutdown time and that should 955 * cause the panel to be disabled / unprepared if needed. For now, 956 * however, we'll keep these calls due to the sheer number of 957 * different DRM modeset drivers used with panel-edp. The fact that 958 * we're calling these and _also_ the drm_atomic_helper_shutdown() 959 * will try to disable/unprepare means that we can get a warning about 960 * trying to disable/unprepare an already disabled/unprepared panel, 961 * but that's something we'll have to live with until we've confirmed 962 * that all DRM modeset drivers are properly calling 963 * drm_atomic_helper_shutdown(). 964 */ 965 drm_panel_disable(&panel->base); 966 drm_panel_unprepare(&panel->base); 967 } 968 969 static void panel_edp_remove(struct device *dev) 970 { 971 struct panel_edp *panel = dev_get_drvdata(dev); 972 973 drm_panel_remove(&panel->base); 974 panel_edp_shutdown(dev); 975 976 pm_runtime_dont_use_autosuspend(dev); 977 pm_runtime_disable(dev); 978 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 979 put_device(&panel->ddc->dev); 980 981 drm_edid_free(panel->drm_edid); 982 panel->drm_edid = NULL; 983 } 984 985 static const struct display_timing auo_b101ean01_timing = { 986 .pixelclock = { 65300000, 72500000, 75000000 }, 987 .hactive = { 1280, 1280, 1280 }, 988 .hfront_porch = { 18, 119, 119 }, 989 .hback_porch = { 21, 21, 21 }, 990 .hsync_len = { 32, 32, 32 }, 991 .vactive = { 800, 800, 800 }, 992 .vfront_porch = { 4, 4, 4 }, 993 .vback_porch = { 8, 8, 8 }, 994 .vsync_len = { 18, 20, 20 }, 995 }; 996 997 static const struct panel_desc auo_b101ean01 = { 998 .timings = &auo_b101ean01_timing, 999 .num_timings = 1, 1000 .bpc = 6, 1001 .size = { 1002 .width = 217, 1003 .height = 136, 1004 }, 1005 }; 1006 1007 static const struct drm_display_mode auo_b116xa3_mode = { 1008 .clock = 70589, 1009 .hdisplay = 1366, 1010 .hsync_start = 1366 + 40, 1011 .hsync_end = 1366 + 40 + 40, 1012 .htotal = 1366 + 40 + 40 + 32, 1013 .vdisplay = 768, 1014 .vsync_start = 768 + 10, 1015 .vsync_end = 768 + 10 + 12, 1016 .vtotal = 768 + 10 + 12 + 6, 1017 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1018 }; 1019 1020 static const struct drm_display_mode auo_b116xak01_mode = { 1021 .clock = 69300, 1022 .hdisplay = 1366, 1023 .hsync_start = 1366 + 48, 1024 .hsync_end = 1366 + 48 + 32, 1025 .htotal = 1366 + 48 + 32 + 10, 1026 .vdisplay = 768, 1027 .vsync_start = 768 + 4, 1028 .vsync_end = 768 + 4 + 6, 1029 .vtotal = 768 + 4 + 6 + 15, 1030 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1031 }; 1032 1033 static const struct panel_desc auo_b116xak01 = { 1034 .modes = &auo_b116xak01_mode, 1035 .num_modes = 1, 1036 .bpc = 6, 1037 .size = { 1038 .width = 256, 1039 .height = 144, 1040 }, 1041 .delay = { 1042 .hpd_absent = 200, 1043 .unprepare = 500, 1044 .enable = 50, 1045 }, 1046 }; 1047 1048 static const struct drm_display_mode auo_b133htn01_mode = { 1049 .clock = 150660, 1050 .hdisplay = 1920, 1051 .hsync_start = 1920 + 172, 1052 .hsync_end = 1920 + 172 + 80, 1053 .htotal = 1920 + 172 + 80 + 60, 1054 .vdisplay = 1080, 1055 .vsync_start = 1080 + 25, 1056 .vsync_end = 1080 + 25 + 10, 1057 .vtotal = 1080 + 25 + 10 + 10, 1058 }; 1059 1060 static const struct panel_desc auo_b133htn01 = { 1061 .modes = &auo_b133htn01_mode, 1062 .num_modes = 1, 1063 .bpc = 6, 1064 .size = { 1065 .width = 293, 1066 .height = 165, 1067 }, 1068 .delay = { 1069 .hpd_reliable = 105, 1070 .enable = 20, 1071 .unprepare = 50, 1072 }, 1073 }; 1074 1075 static const struct drm_display_mode auo_b133xtn01_mode = { 1076 .clock = 69500, 1077 .hdisplay = 1366, 1078 .hsync_start = 1366 + 48, 1079 .hsync_end = 1366 + 48 + 32, 1080 .htotal = 1366 + 48 + 32 + 20, 1081 .vdisplay = 768, 1082 .vsync_start = 768 + 3, 1083 .vsync_end = 768 + 3 + 6, 1084 .vtotal = 768 + 3 + 6 + 13, 1085 }; 1086 1087 static const struct panel_desc auo_b133xtn01 = { 1088 .modes = &auo_b133xtn01_mode, 1089 .num_modes = 1, 1090 .bpc = 6, 1091 .size = { 1092 .width = 293, 1093 .height = 165, 1094 }, 1095 }; 1096 1097 static const struct drm_display_mode boe_nv101wxmn51_modes[] = { 1098 { 1099 .clock = 71900, 1100 .hdisplay = 1280, 1101 .hsync_start = 1280 + 48, 1102 .hsync_end = 1280 + 48 + 32, 1103 .htotal = 1280 + 48 + 32 + 80, 1104 .vdisplay = 800, 1105 .vsync_start = 800 + 3, 1106 .vsync_end = 800 + 3 + 5, 1107 .vtotal = 800 + 3 + 5 + 24, 1108 }, 1109 { 1110 .clock = 57500, 1111 .hdisplay = 1280, 1112 .hsync_start = 1280 + 48, 1113 .hsync_end = 1280 + 48 + 32, 1114 .htotal = 1280 + 48 + 32 + 80, 1115 .vdisplay = 800, 1116 .vsync_start = 800 + 3, 1117 .vsync_end = 800 + 3 + 5, 1118 .vtotal = 800 + 3 + 5 + 24, 1119 }, 1120 }; 1121 1122 static const struct panel_desc boe_nv101wxmn51 = { 1123 .modes = boe_nv101wxmn51_modes, 1124 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes), 1125 .bpc = 8, 1126 .size = { 1127 .width = 217, 1128 .height = 136, 1129 }, 1130 .delay = { 1131 /* TODO: should be hpd-absent and no-hpd should be set? */ 1132 .hpd_reliable = 210, 1133 .enable = 50, 1134 .unprepare = 160, 1135 }, 1136 }; 1137 1138 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = { 1139 { 1140 .clock = 207800, 1141 .hdisplay = 2160, 1142 .hsync_start = 2160 + 48, 1143 .hsync_end = 2160 + 48 + 32, 1144 .htotal = 2160 + 48 + 32 + 100, 1145 .vdisplay = 1440, 1146 .vsync_start = 1440 + 3, 1147 .vsync_end = 1440 + 3 + 6, 1148 .vtotal = 1440 + 3 + 6 + 31, 1149 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1150 }, 1151 { 1152 .clock = 138500, 1153 .hdisplay = 2160, 1154 .hsync_start = 2160 + 48, 1155 .hsync_end = 2160 + 48 + 32, 1156 .htotal = 2160 + 48 + 32 + 100, 1157 .vdisplay = 1440, 1158 .vsync_start = 1440 + 3, 1159 .vsync_end = 1440 + 3 + 6, 1160 .vtotal = 1440 + 3 + 6 + 31, 1161 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1162 }, 1163 }; 1164 1165 static const struct panel_desc boe_nv110wtm_n61 = { 1166 .modes = boe_nv110wtm_n61_modes, 1167 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes), 1168 .bpc = 8, 1169 .size = { 1170 .width = 233, 1171 .height = 155, 1172 }, 1173 .delay = { 1174 .hpd_absent = 200, 1175 .prepare_to_enable = 80, 1176 .enable = 50, 1177 .unprepare = 500, 1178 }, 1179 }; 1180 1181 /* Also used for boe_nv133fhm_n62 */ 1182 static const struct drm_display_mode boe_nv133fhm_n61_modes = { 1183 .clock = 147840, 1184 .hdisplay = 1920, 1185 .hsync_start = 1920 + 48, 1186 .hsync_end = 1920 + 48 + 32, 1187 .htotal = 1920 + 48 + 32 + 200, 1188 .vdisplay = 1080, 1189 .vsync_start = 1080 + 3, 1190 .vsync_end = 1080 + 3 + 6, 1191 .vtotal = 1080 + 3 + 6 + 31, 1192 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1193 }; 1194 1195 /* Also used for boe_nv133fhm_n62 */ 1196 static const struct panel_desc boe_nv133fhm_n61 = { 1197 .modes = &boe_nv133fhm_n61_modes, 1198 .num_modes = 1, 1199 .bpc = 6, 1200 .size = { 1201 .width = 294, 1202 .height = 165, 1203 }, 1204 .delay = { 1205 /* 1206 * When power is first given to the panel there's a short 1207 * spike on the HPD line. It was explained that this spike 1208 * was until the TCON data download was complete. On 1209 * one system this was measured at 8 ms. We'll put 15 ms 1210 * in the prepare delay just to be safe. That means: 1211 * - If HPD isn't hooked up you still have 200 ms delay. 1212 * - If HPD is hooked up we won't try to look at it for the 1213 * first 15 ms. 1214 */ 1215 .hpd_reliable = 15, 1216 .hpd_absent = 200, 1217 1218 .unprepare = 500, 1219 }, 1220 }; 1221 1222 static const struct drm_display_mode boe_nv140fhmn49_modes[] = { 1223 { 1224 .clock = 148500, 1225 .hdisplay = 1920, 1226 .hsync_start = 1920 + 48, 1227 .hsync_end = 1920 + 48 + 32, 1228 .htotal = 2200, 1229 .vdisplay = 1080, 1230 .vsync_start = 1080 + 3, 1231 .vsync_end = 1080 + 3 + 5, 1232 .vtotal = 1125, 1233 }, 1234 }; 1235 1236 static const struct panel_desc boe_nv140fhmn49 = { 1237 .modes = boe_nv140fhmn49_modes, 1238 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes), 1239 .bpc = 6, 1240 .size = { 1241 .width = 309, 1242 .height = 174, 1243 }, 1244 .delay = { 1245 /* TODO: should be hpd-absent and no-hpd should be set? */ 1246 .hpd_reliable = 210, 1247 .enable = 50, 1248 .unprepare = 160, 1249 }, 1250 }; 1251 1252 static const struct drm_display_mode innolux_n116bca_ea1_mode = { 1253 .clock = 76420, 1254 .hdisplay = 1366, 1255 .hsync_start = 1366 + 136, 1256 .hsync_end = 1366 + 136 + 30, 1257 .htotal = 1366 + 136 + 30 + 60, 1258 .vdisplay = 768, 1259 .vsync_start = 768 + 8, 1260 .vsync_end = 768 + 8 + 12, 1261 .vtotal = 768 + 8 + 12 + 12, 1262 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1263 }; 1264 1265 static const struct panel_desc innolux_n116bca_ea1 = { 1266 .modes = &innolux_n116bca_ea1_mode, 1267 .num_modes = 1, 1268 .bpc = 6, 1269 .size = { 1270 .width = 256, 1271 .height = 144, 1272 }, 1273 .delay = { 1274 .hpd_absent = 200, 1275 .enable = 80, 1276 .disable = 50, 1277 .unprepare = 500, 1278 }, 1279 }; 1280 1281 /* 1282 * Datasheet specifies that at 60 Hz refresh rate: 1283 * - total horizontal time: { 1506, 1592, 1716 } 1284 * - total vertical time: { 788, 800, 868 } 1285 * 1286 * ...but doesn't go into exactly how that should be split into a front 1287 * porch, back porch, or sync length. For now we'll leave a single setting 1288 * here which allows a bit of tweaking of the pixel clock at the expense of 1289 * refresh rate. 1290 */ 1291 static const struct display_timing innolux_n116bge_timing = { 1292 .pixelclock = { 72600000, 76420000, 80240000 }, 1293 .hactive = { 1366, 1366, 1366 }, 1294 .hfront_porch = { 136, 136, 136 }, 1295 .hback_porch = { 60, 60, 60 }, 1296 .hsync_len = { 30, 30, 30 }, 1297 .vactive = { 768, 768, 768 }, 1298 .vfront_porch = { 8, 8, 8 }, 1299 .vback_porch = { 12, 12, 12 }, 1300 .vsync_len = { 12, 12, 12 }, 1301 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1302 }; 1303 1304 static const struct panel_desc innolux_n116bge = { 1305 .timings = &innolux_n116bge_timing, 1306 .num_timings = 1, 1307 .bpc = 6, 1308 .size = { 1309 .width = 256, 1310 .height = 144, 1311 }, 1312 }; 1313 1314 static const struct drm_display_mode innolux_n125hce_gn1_mode = { 1315 .clock = 162000, 1316 .hdisplay = 1920, 1317 .hsync_start = 1920 + 40, 1318 .hsync_end = 1920 + 40 + 40, 1319 .htotal = 1920 + 40 + 40 + 80, 1320 .vdisplay = 1080, 1321 .vsync_start = 1080 + 4, 1322 .vsync_end = 1080 + 4 + 4, 1323 .vtotal = 1080 + 4 + 4 + 24, 1324 }; 1325 1326 static const struct panel_desc innolux_n125hce_gn1 = { 1327 .modes = &innolux_n125hce_gn1_mode, 1328 .num_modes = 1, 1329 .bpc = 8, 1330 .size = { 1331 .width = 276, 1332 .height = 155, 1333 }, 1334 }; 1335 1336 static const struct drm_display_mode innolux_p120zdg_bf1_mode = { 1337 .clock = 206016, 1338 .hdisplay = 2160, 1339 .hsync_start = 2160 + 48, 1340 .hsync_end = 2160 + 48 + 32, 1341 .htotal = 2160 + 48 + 32 + 80, 1342 .vdisplay = 1440, 1343 .vsync_start = 1440 + 3, 1344 .vsync_end = 1440 + 3 + 10, 1345 .vtotal = 1440 + 3 + 10 + 27, 1346 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1347 }; 1348 1349 static const struct panel_desc innolux_p120zdg_bf1 = { 1350 .modes = &innolux_p120zdg_bf1_mode, 1351 .num_modes = 1, 1352 .bpc = 8, 1353 .size = { 1354 .width = 254, 1355 .height = 169, 1356 }, 1357 .delay = { 1358 .hpd_absent = 200, 1359 .unprepare = 500, 1360 }, 1361 }; 1362 1363 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = { 1364 .clock = 81000, 1365 .hdisplay = 1366, 1366 .hsync_start = 1366 + 40, 1367 .hsync_end = 1366 + 40 + 32, 1368 .htotal = 1366 + 40 + 32 + 62, 1369 .vdisplay = 768, 1370 .vsync_start = 768 + 5, 1371 .vsync_end = 768 + 5 + 5, 1372 .vtotal = 768 + 5 + 5 + 122, 1373 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1374 }; 1375 1376 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = { 1377 .modes = &kingdisplay_kd116n21_30nv_a010_mode, 1378 .num_modes = 1, 1379 .bpc = 6, 1380 .size = { 1381 .width = 256, 1382 .height = 144, 1383 }, 1384 .delay = { 1385 .hpd_absent = 200, 1386 }, 1387 }; 1388 1389 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = { 1390 .clock = 200000, 1391 .hdisplay = 1536, 1392 .hsync_start = 1536 + 12, 1393 .hsync_end = 1536 + 12 + 16, 1394 .htotal = 1536 + 12 + 16 + 48, 1395 .vdisplay = 2048, 1396 .vsync_start = 2048 + 8, 1397 .vsync_end = 2048 + 8 + 4, 1398 .vtotal = 2048 + 8 + 4 + 8, 1399 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1400 }; 1401 1402 static const struct panel_desc lg_lp079qx1_sp0v = { 1403 .modes = &lg_lp079qx1_sp0v_mode, 1404 .num_modes = 1, 1405 .size = { 1406 .width = 129, 1407 .height = 171, 1408 }, 1409 }; 1410 1411 static const struct drm_display_mode lg_lp097qx1_spa1_mode = { 1412 .clock = 205210, 1413 .hdisplay = 2048, 1414 .hsync_start = 2048 + 150, 1415 .hsync_end = 2048 + 150 + 5, 1416 .htotal = 2048 + 150 + 5 + 5, 1417 .vdisplay = 1536, 1418 .vsync_start = 1536 + 3, 1419 .vsync_end = 1536 + 3 + 1, 1420 .vtotal = 1536 + 3 + 1 + 9, 1421 }; 1422 1423 static const struct panel_desc lg_lp097qx1_spa1 = { 1424 .modes = &lg_lp097qx1_spa1_mode, 1425 .num_modes = 1, 1426 .size = { 1427 .width = 208, 1428 .height = 147, 1429 }, 1430 }; 1431 1432 static const struct drm_display_mode lg_lp120up1_mode = { 1433 .clock = 162300, 1434 .hdisplay = 1920, 1435 .hsync_start = 1920 + 40, 1436 .hsync_end = 1920 + 40 + 40, 1437 .htotal = 1920 + 40 + 40 + 80, 1438 .vdisplay = 1280, 1439 .vsync_start = 1280 + 4, 1440 .vsync_end = 1280 + 4 + 4, 1441 .vtotal = 1280 + 4 + 4 + 12, 1442 }; 1443 1444 static const struct panel_desc lg_lp120up1 = { 1445 .modes = &lg_lp120up1_mode, 1446 .num_modes = 1, 1447 .bpc = 8, 1448 .size = { 1449 .width = 267, 1450 .height = 183, 1451 }, 1452 }; 1453 1454 static const struct drm_display_mode lg_lp129qe_mode = { 1455 .clock = 285250, 1456 .hdisplay = 2560, 1457 .hsync_start = 2560 + 48, 1458 .hsync_end = 2560 + 48 + 32, 1459 .htotal = 2560 + 48 + 32 + 80, 1460 .vdisplay = 1700, 1461 .vsync_start = 1700 + 3, 1462 .vsync_end = 1700 + 3 + 10, 1463 .vtotal = 1700 + 3 + 10 + 36, 1464 }; 1465 1466 static const struct panel_desc lg_lp129qe = { 1467 .modes = &lg_lp129qe_mode, 1468 .num_modes = 1, 1469 .bpc = 8, 1470 .size = { 1471 .width = 272, 1472 .height = 181, 1473 }, 1474 }; 1475 1476 static const struct drm_display_mode neweast_wjfh116008a_modes[] = { 1477 { 1478 .clock = 138500, 1479 .hdisplay = 1920, 1480 .hsync_start = 1920 + 48, 1481 .hsync_end = 1920 + 48 + 32, 1482 .htotal = 1920 + 48 + 32 + 80, 1483 .vdisplay = 1080, 1484 .vsync_start = 1080 + 3, 1485 .vsync_end = 1080 + 3 + 5, 1486 .vtotal = 1080 + 3 + 5 + 23, 1487 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1488 }, { 1489 .clock = 110920, 1490 .hdisplay = 1920, 1491 .hsync_start = 1920 + 48, 1492 .hsync_end = 1920 + 48 + 32, 1493 .htotal = 1920 + 48 + 32 + 80, 1494 .vdisplay = 1080, 1495 .vsync_start = 1080 + 3, 1496 .vsync_end = 1080 + 3 + 5, 1497 .vtotal = 1080 + 3 + 5 + 23, 1498 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1499 } 1500 }; 1501 1502 static const struct panel_desc neweast_wjfh116008a = { 1503 .modes = neweast_wjfh116008a_modes, 1504 .num_modes = 2, 1505 .bpc = 6, 1506 .size = { 1507 .width = 260, 1508 .height = 150, 1509 }, 1510 .delay = { 1511 .hpd_reliable = 110, 1512 .enable = 20, 1513 .unprepare = 500, 1514 }, 1515 }; 1516 1517 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = { 1518 .clock = 271560, 1519 .hdisplay = 2560, 1520 .hsync_start = 2560 + 48, 1521 .hsync_end = 2560 + 48 + 32, 1522 .htotal = 2560 + 48 + 32 + 80, 1523 .vdisplay = 1600, 1524 .vsync_start = 1600 + 2, 1525 .vsync_end = 1600 + 2 + 5, 1526 .vtotal = 1600 + 2 + 5 + 57, 1527 }; 1528 1529 static const struct panel_desc samsung_lsn122dl01_c01 = { 1530 .modes = &samsung_lsn122dl01_c01_mode, 1531 .num_modes = 1, 1532 .size = { 1533 .width = 263, 1534 .height = 164, 1535 }, 1536 }; 1537 1538 static const struct drm_display_mode samsung_ltn140at29_301_mode = { 1539 .clock = 76300, 1540 .hdisplay = 1366, 1541 .hsync_start = 1366 + 64, 1542 .hsync_end = 1366 + 64 + 48, 1543 .htotal = 1366 + 64 + 48 + 128, 1544 .vdisplay = 768, 1545 .vsync_start = 768 + 2, 1546 .vsync_end = 768 + 2 + 5, 1547 .vtotal = 768 + 2 + 5 + 17, 1548 }; 1549 1550 static const struct panel_desc samsung_ltn140at29_301 = { 1551 .modes = &samsung_ltn140at29_301_mode, 1552 .num_modes = 1, 1553 .bpc = 6, 1554 .size = { 1555 .width = 320, 1556 .height = 187, 1557 }, 1558 }; 1559 1560 static const struct drm_display_mode sharp_ld_d5116z01b_mode = { 1561 .clock = 168480, 1562 .hdisplay = 1920, 1563 .hsync_start = 1920 + 48, 1564 .hsync_end = 1920 + 48 + 32, 1565 .htotal = 1920 + 48 + 32 + 80, 1566 .vdisplay = 1280, 1567 .vsync_start = 1280 + 3, 1568 .vsync_end = 1280 + 3 + 10, 1569 .vtotal = 1280 + 3 + 10 + 57, 1570 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1571 }; 1572 1573 static const struct panel_desc sharp_ld_d5116z01b = { 1574 .modes = &sharp_ld_d5116z01b_mode, 1575 .num_modes = 1, 1576 .bpc = 8, 1577 .size = { 1578 .width = 260, 1579 .height = 120, 1580 }, 1581 }; 1582 1583 static const struct display_timing sharp_lq123p1jx31_timing = { 1584 .pixelclock = { 252750000, 252750000, 266604720 }, 1585 .hactive = { 2400, 2400, 2400 }, 1586 .hfront_porch = { 48, 48, 48 }, 1587 .hback_porch = { 80, 80, 84 }, 1588 .hsync_len = { 32, 32, 32 }, 1589 .vactive = { 1600, 1600, 1600 }, 1590 .vfront_porch = { 3, 3, 3 }, 1591 .vback_porch = { 33, 33, 120 }, 1592 .vsync_len = { 10, 10, 10 }, 1593 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1594 }; 1595 1596 static const struct panel_desc sharp_lq123p1jx31 = { 1597 .timings = &sharp_lq123p1jx31_timing, 1598 .num_timings = 1, 1599 .bpc = 8, 1600 .size = { 1601 .width = 259, 1602 .height = 173, 1603 }, 1604 .delay = { 1605 .hpd_reliable = 110, 1606 .enable = 50, 1607 .unprepare = 550, 1608 }, 1609 }; 1610 1611 static const struct of_device_id platform_of_match[] = { 1612 { 1613 /* Must be first */ 1614 .compatible = "edp-panel", 1615 }, 1616 /* 1617 * Do not add panels to the list below unless they cannot be handled by 1618 * the generic edp-panel compatible. 1619 * 1620 * The only two valid reasons are: 1621 * - Because of the panel issues (e.g. broken EDID or broken 1622 * identification). 1623 * - Because the eDP drivers didn't wire up the AUX bus properly. 1624 * NOTE that, though this is a marginally valid reason, 1625 * some justification needs to be made for why the platform can't 1626 * wire up the AUX bus properly. 1627 * 1628 * In all other cases the platform should use the aux-bus and declare 1629 * the panel using the 'edp-panel' compatible as a device on the AUX 1630 * bus. 1631 */ 1632 { 1633 .compatible = "auo,b101ean01", 1634 .data = &auo_b101ean01, 1635 }, { 1636 .compatible = "auo,b116xa01", 1637 .data = &auo_b116xak01, 1638 }, { 1639 .compatible = "auo,b133htn01", 1640 .data = &auo_b133htn01, 1641 }, { 1642 .compatible = "auo,b133xtn01", 1643 .data = &auo_b133xtn01, 1644 }, { 1645 .compatible = "boe,nv101wxmn51", 1646 .data = &boe_nv101wxmn51, 1647 }, { 1648 .compatible = "boe,nv110wtm-n61", 1649 .data = &boe_nv110wtm_n61, 1650 }, { 1651 .compatible = "boe,nv133fhm-n61", 1652 .data = &boe_nv133fhm_n61, 1653 }, { 1654 .compatible = "boe,nv133fhm-n62", 1655 .data = &boe_nv133fhm_n61, 1656 }, { 1657 .compatible = "boe,nv140fhmn49", 1658 .data = &boe_nv140fhmn49, 1659 }, { 1660 .compatible = "innolux,n116bca-ea1", 1661 .data = &innolux_n116bca_ea1, 1662 }, { 1663 .compatible = "innolux,n116bge", 1664 .data = &innolux_n116bge, 1665 }, { 1666 .compatible = "innolux,n125hce-gn1", 1667 .data = &innolux_n125hce_gn1, 1668 }, { 1669 .compatible = "innolux,p120zdg-bf1", 1670 .data = &innolux_p120zdg_bf1, 1671 }, { 1672 .compatible = "kingdisplay,kd116n21-30nv-a010", 1673 .data = &kingdisplay_kd116n21_30nv_a010, 1674 }, { 1675 .compatible = "lg,lp079qx1-sp0v", 1676 .data = &lg_lp079qx1_sp0v, 1677 }, { 1678 .compatible = "lg,lp097qx1-spa1", 1679 .data = &lg_lp097qx1_spa1, 1680 }, { 1681 .compatible = "lg,lp120up1", 1682 .data = &lg_lp120up1, 1683 }, { 1684 .compatible = "lg,lp129qe", 1685 .data = &lg_lp129qe, 1686 }, { 1687 .compatible = "neweast,wjfh116008a", 1688 .data = &neweast_wjfh116008a, 1689 }, { 1690 .compatible = "samsung,lsn122dl01-c01", 1691 .data = &samsung_lsn122dl01_c01, 1692 }, { 1693 .compatible = "samsung,ltn140at29-301", 1694 .data = &samsung_ltn140at29_301, 1695 }, { 1696 .compatible = "sharp,ld-d5116z01b", 1697 .data = &sharp_ld_d5116z01b, 1698 }, { 1699 .compatible = "sharp,lq123p1jx31", 1700 .data = &sharp_lq123p1jx31, 1701 }, { 1702 /* sentinel */ 1703 } 1704 }; 1705 MODULE_DEVICE_TABLE(of, platform_of_match); 1706 1707 static const struct panel_delay delay_200_500_p2e80 = { 1708 .hpd_absent = 200, 1709 .unprepare = 500, 1710 .prepare_to_enable = 80, 1711 }; 1712 1713 static const struct panel_delay delay_200_500_e50_p2e80 = { 1714 .hpd_absent = 200, 1715 .unprepare = 500, 1716 .enable = 50, 1717 .prepare_to_enable = 80, 1718 }; 1719 1720 static const struct panel_delay delay_200_500_p2e100 = { 1721 .hpd_absent = 200, 1722 .unprepare = 500, 1723 .prepare_to_enable = 100, 1724 }; 1725 1726 static const struct panel_delay delay_200_500_e50 = { 1727 .hpd_absent = 200, 1728 .unprepare = 500, 1729 .enable = 50, 1730 }; 1731 1732 static const struct panel_delay delay_200_500_e50_p2e200 = { 1733 .hpd_absent = 200, 1734 .unprepare = 500, 1735 .enable = 50, 1736 .prepare_to_enable = 200, 1737 }; 1738 1739 static const struct panel_delay delay_200_500_e80 = { 1740 .hpd_absent = 200, 1741 .unprepare = 500, 1742 .enable = 80, 1743 }; 1744 1745 static const struct panel_delay delay_200_500_e80_d50 = { 1746 .hpd_absent = 200, 1747 .unprepare = 500, 1748 .enable = 80, 1749 .disable = 50, 1750 }; 1751 1752 static const struct panel_delay delay_80_500_e50 = { 1753 .hpd_absent = 80, 1754 .unprepare = 500, 1755 .enable = 50, 1756 }; 1757 1758 static const struct panel_delay delay_100_500_e200 = { 1759 .hpd_absent = 100, 1760 .unprepare = 500, 1761 .enable = 200, 1762 }; 1763 1764 static const struct panel_delay delay_200_500_e200 = { 1765 .hpd_absent = 200, 1766 .unprepare = 500, 1767 .enable = 200, 1768 }; 1769 1770 static const struct panel_delay delay_200_500_e200_d200 = { 1771 .hpd_absent = 200, 1772 .unprepare = 500, 1773 .enable = 200, 1774 .disable = 200, 1775 }; 1776 1777 static const struct panel_delay delay_200_500_e200_d10 = { 1778 .hpd_absent = 200, 1779 .unprepare = 500, 1780 .enable = 200, 1781 .disable = 10, 1782 }; 1783 1784 static const struct panel_delay delay_200_150_e200 = { 1785 .hpd_absent = 200, 1786 .unprepare = 150, 1787 .enable = 200, 1788 }; 1789 1790 static const struct panel_delay delay_200_500_e50_po2e200 = { 1791 .hpd_absent = 200, 1792 .unprepare = 500, 1793 .enable = 50, 1794 .powered_on_to_enable = 200, 1795 }; 1796 1797 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \ 1798 { \ 1799 .ident = { \ 1800 .name = _name, \ 1801 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1802 product_id), \ 1803 }, \ 1804 .delay = _delay \ 1805 } 1806 1807 #define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \ 1808 { \ 1809 .ident = { \ 1810 .name = _name, \ 1811 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1812 product_id), \ 1813 }, \ 1814 .delay = _delay, \ 1815 .override_edid_mode = _mode \ 1816 } 1817 1818 /* 1819 * This table is used to figure out power sequencing delays for panels that 1820 * are detected by EDID. Entries here may point to entries in the 1821 * platform_of_match table (if a panel is listed in both places). 1822 * 1823 * Sort first by vendor, then by product ID. 1824 */ 1825 static const struct edp_panel_entry edp_panels[] = { 1826 EDP_PANEL_ENTRY('A', 'U', 'O', 0x105c, &delay_200_500_e50, "B116XTN01.0"), 1827 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), 1828 EDP_PANEL_ENTRY('A', 'U', 'O', 0x125c, &delay_200_500_e50, "Unknown"), 1829 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"), 1830 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1999, &delay_200_500_e50, "Unknown"), 1831 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), 1832 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"), 1833 EDP_PANEL_ENTRY('A', 'U', 'O', 0x203d, &delay_200_500_e50, "B140HTN02.0"), 1834 EDP_PANEL_ENTRY('A', 'U', 'O', 0x208d, &delay_200_500_e50, "B140HTN02.1"), 1835 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"), 1836 EDP_PANEL_ENTRY('A', 'U', 'O', 0x239b, &delay_200_500_e50, "B116XAN06.1"), 1837 EDP_PANEL_ENTRY('A', 'U', 'O', 0x255c, &delay_200_500_e50, "B116XTN02.5"), 1838 EDP_PANEL_ENTRY('A', 'U', 'O', 0x403d, &delay_200_500_e50, "B140HAN04.0"), 1839 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAN04.0"), 1840 EDP_PANEL_ENTRY2('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0", 1841 &auo_b116xa3_mode), 1842 EDP_PANEL_ENTRY('A', 'U', 'O', 0x435c, &delay_200_500_e50, "Unknown"), 1843 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"), 1844 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"), 1845 EDP_PANEL_ENTRY('A', 'U', 'O', 0x635c, &delay_200_500_e50, "B116XAN06.3"), 1846 EDP_PANEL_ENTRY('A', 'U', 'O', 0x639c, &delay_200_500_e50, "B140HAK02.7"), 1847 EDP_PANEL_ENTRY('A', 'U', 'O', 0x723c, &delay_200_500_e50, "B140XTN07.2"), 1848 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"), 1849 EDP_PANEL_ENTRY('A', 'U', 'O', 0xd497, &delay_200_500_e50, "B120XAN01.0"), 1850 EDP_PANEL_ENTRY('A', 'U', 'O', 0xf390, &delay_200_500_e50, "B140XTN07.7"), 1851 1852 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0607, &delay_200_500_e200, "Unknown"), 1853 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0608, &delay_200_500_e50, "NT116WHM-N11"), 1854 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0609, &delay_200_500_e50_po2e200, "NT116WHM-N21 V4.1"), 1855 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0623, &delay_200_500_e200, "NT116WHM-N21 V4.0"), 1856 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0668, &delay_200_500_e200, "Unknown"), 1857 EDP_PANEL_ENTRY('B', 'O', 'E', 0x068f, &delay_200_500_e200, "Unknown"), 1858 EDP_PANEL_ENTRY('B', 'O', 'E', 0x06e5, &delay_200_500_e200, "Unknown"), 1859 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0705, &delay_200_500_e200, "Unknown"), 1860 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0715, &delay_200_150_e200, "NT116WHM-N21"), 1861 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0717, &delay_200_500_e50_po2e200, "NV133FHM-N42"), 1862 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0731, &delay_200_500_e80, "NT116WHM-N42"), 1863 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0741, &delay_200_500_e200, "NT116WHM-N44"), 1864 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0744, &delay_200_500_e200, "Unknown"), 1865 EDP_PANEL_ENTRY('B', 'O', 'E', 0x074c, &delay_200_500_e200, "Unknown"), 1866 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0751, &delay_200_500_e200, "Unknown"), 1867 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0754, &delay_200_500_e50_po2e200, "NV116WHM-N45"), 1868 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0771, &delay_200_500_e200, "Unknown"), 1869 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"), 1870 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0797, &delay_200_500_e200, "Unknown"), 1871 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07a8, &delay_200_500_e50_po2e200, "NT116WHM-N21"), 1872 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"), 1873 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d3, &delay_200_500_e200, "Unknown"), 1874 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07f6, &delay_200_500_e200, "NT140FHM-N44"), 1875 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07f8, &delay_200_500_e200, "Unknown"), 1876 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0813, &delay_200_500_e200, "Unknown"), 1877 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0827, &delay_200_500_e50_p2e80, "NT140WHM-N44 V8.0"), 1878 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"), 1879 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0843, &delay_200_500_e200, "Unknown"), 1880 EDP_PANEL_ENTRY('B', 'O', 'E', 0x08b2, &delay_200_500_e200, "NT140WHM-N49"), 1881 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0848, &delay_200_500_e200, "Unknown"), 1882 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0849, &delay_200_500_e200, "Unknown"), 1883 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"), 1884 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"), 1885 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0951, &delay_200_500_e80, "NV116WHM-N47"), 1886 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"), 1887 EDP_PANEL_ENTRY('B', 'O', 'E', 0x096e, &delay_200_500_e50_po2e200, "NV116WHM-T07 V8.0"), 1888 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"), 1889 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"), 1890 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0993, &delay_200_500_e80, "NV116WHM-T14 V8.0"), 1891 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09ad, &delay_200_500_e80, "NV116WHM-N47"), 1892 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09ae, &delay_200_500_e200, "NT140FHM-N45"), 1893 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"), 1894 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a36, &delay_200_500_e200, "Unknown"), 1895 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80, "NV116WHM-N49"), 1896 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"), 1897 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"), 1898 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80, "NV122WUM-N41"), 1899 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b43, &delay_200_500_e200, "NV140FHM-T09"), 1900 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b56, &delay_200_500_e80, "NT140FHM-N47"), 1901 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0c20, &delay_200_500_e80, "NT140FHM-N47"), 1902 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cb6, &delay_200_500_e200, "NT116WHM-N44"), 1903 1904 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1130, &delay_200_500_e50, "N116BGE-EB2"), 1905 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1132, &delay_200_500_e80_d50, "N116BGE-EA2"), 1906 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1138, &innolux_n116bca_ea1.delay, "N116BCA-EA1-RC4"), 1907 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"), 1908 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1141, &delay_200_500_e80_d50, "Unknown"), 1909 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1145, &delay_200_500_e80_d50, "N116BCN-EB1"), 1910 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114a, &delay_200_500_e80_d50, "Unknown"), 1911 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), 1912 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"), 1913 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"), 1914 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"), 1915 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1156, &delay_200_500_e80_d50, "Unknown"), 1916 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1157, &delay_200_500_e80_d50, "N116BGE-EA2"), 1917 EDP_PANEL_ENTRY('C', 'M', 'N', 0x115b, &delay_200_500_e80_d50, "N116BCN-EB1"), 1918 EDP_PANEL_ENTRY('C', 'M', 'N', 0x115e, &delay_200_500_e80_d50, "N116BCA-EA1"), 1919 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1160, &delay_200_500_e80_d50, "N116BCJ-EAK"), 1920 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"), 1921 EDP_PANEL_ENTRY('C', 'M', 'N', 0x142b, &delay_200_500_e80_d50, "N140HCA-EAC"), 1922 EDP_PANEL_ENTRY('C', 'M', 'N', 0x142e, &delay_200_500_e80_d50, "N140BGA-EA4"), 1923 EDP_PANEL_ENTRY('C', 'M', 'N', 0x144f, &delay_200_500_e80_d50, "N140HGA-EA1"), 1924 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1468, &delay_200_500_e80, "N140HGA-EA1"), 1925 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"), 1926 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d6, &delay_200_500_e80_d50, "N140BGA-EA4"), 1927 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14e5, &delay_200_500_e80_d50, "N140HGA-EA1"), 1928 1929 EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_p2e200, "MNC207QS1-1"), 1930 1931 EDP_PANEL_ENTRY('C', 'S', 'W', 0x1100, &delay_200_500_e80_d50, "MNB601LS1-1"), 1932 1933 EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d51, &delay_200_500_e200, "Unknown"), 1934 EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5b, &delay_200_500_e200, "Unknown"), 1935 EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5c, &delay_200_500_e200, "MB116AN01-2"), 1936 1937 EDP_PANEL_ENTRY('I', 'V', 'O', 0x048e, &delay_200_500_e200_d10, "M116NWR6 R5"), 1938 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), 1939 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"), 1940 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"), 1941 EDP_PANEL_ENTRY('I', 'V', 'O', 0x8c4d, &delay_200_150_e200, "R140NWFM R1"), 1942 1943 EDP_PANEL_ENTRY('K', 'D', 'B', 0x044f, &delay_200_500_e80_d50, "Unknown"), 1944 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), 1945 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1118, &delay_200_500_e50, "KD116N29-30NK-A005"), 1946 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), 1947 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1212, &delay_200_500_e50, "KD116N0930A16"), 1948 1949 EDP_PANEL_ENTRY('K', 'D', 'C', 0x044f, &delay_200_500_e50, "KD116N9-30NH-F3"), 1950 EDP_PANEL_ENTRY('K', 'D', 'C', 0x05f1, &delay_200_500_e80_d50, "KD116N5-30NV-G7"), 1951 EDP_PANEL_ENTRY('K', 'D', 'C', 0x0809, &delay_200_500_e50, "KD116N2930A15"), 1952 1953 EDP_PANEL_ENTRY('L', 'G', 'D', 0x0000, &delay_200_500_e200_d200, "Unknown"), 1954 EDP_PANEL_ENTRY('L', 'G', 'D', 0x048d, &delay_200_500_e200_d200, "Unknown"), 1955 EDP_PANEL_ENTRY('L', 'G', 'D', 0x0497, &delay_200_500_e200_d200, "LP116WH7-SPB1"), 1956 EDP_PANEL_ENTRY('L', 'G', 'D', 0x052c, &delay_200_500_e200_d200, "LP133WF2-SPL7"), 1957 EDP_PANEL_ENTRY('L', 'G', 'D', 0x0537, &delay_200_500_e200_d200, "Unknown"), 1958 EDP_PANEL_ENTRY('L', 'G', 'D', 0x054a, &delay_200_500_e200_d200, "LP116WH8-SPC1"), 1959 EDP_PANEL_ENTRY('L', 'G', 'D', 0x0567, &delay_200_500_e200_d200, "Unknown"), 1960 EDP_PANEL_ENTRY('L', 'G', 'D', 0x05af, &delay_200_500_e200_d200, "Unknown"), 1961 EDP_PANEL_ENTRY('L', 'G', 'D', 0x05f1, &delay_200_500_e200_d200, "Unknown"), 1962 1963 EDP_PANEL_ENTRY('S', 'D', 'C', 0x416d, &delay_100_500_e200, "ATNA45AF01"), 1964 1965 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"), 1966 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &delay_80_500_e50, "LQ140M1JW46"), 1967 EDP_PANEL_ENTRY('S', 'H', 'P', 0x153a, &delay_200_500_e50, "LQ140T1JH01"), 1968 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"), 1969 1970 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"), 1971 1972 { /* sentinal */ } 1973 }; 1974 1975 static const struct edp_panel_entry *find_edp_panel(u32 panel_id, const struct drm_edid *edid) 1976 { 1977 const struct edp_panel_entry *panel; 1978 1979 if (!panel_id) 1980 return NULL; 1981 1982 /* 1983 * Match with identity first. This allows handling the case where 1984 * vendors incorrectly reused the same panel ID for multiple panels that 1985 * need different settings. If there's no match, try again with panel 1986 * ID, which should be unique. 1987 */ 1988 for (panel = edp_panels; panel->ident.panel_id; panel++) 1989 if (drm_edid_match(edid, &panel->ident)) 1990 return panel; 1991 1992 for (panel = edp_panels; panel->ident.panel_id; panel++) 1993 if (panel->ident.panel_id == panel_id) 1994 return panel; 1995 1996 return NULL; 1997 } 1998 1999 static int panel_edp_platform_probe(struct platform_device *pdev) 2000 { 2001 const struct of_device_id *id; 2002 2003 /* Skip one since "edp-panel" is only supported on DP AUX bus */ 2004 id = of_match_node(platform_of_match + 1, pdev->dev.of_node); 2005 if (!id) 2006 return -ENODEV; 2007 2008 return panel_edp_probe(&pdev->dev, id->data, NULL); 2009 } 2010 2011 static void panel_edp_platform_remove(struct platform_device *pdev) 2012 { 2013 panel_edp_remove(&pdev->dev); 2014 } 2015 2016 static void panel_edp_platform_shutdown(struct platform_device *pdev) 2017 { 2018 panel_edp_shutdown(&pdev->dev); 2019 } 2020 2021 static const struct dev_pm_ops panel_edp_pm_ops = { 2022 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL) 2023 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 2024 pm_runtime_force_resume) 2025 }; 2026 2027 static struct platform_driver panel_edp_platform_driver = { 2028 .driver = { 2029 .name = "panel-edp", 2030 .of_match_table = platform_of_match, 2031 .pm = &panel_edp_pm_ops, 2032 }, 2033 .probe = panel_edp_platform_probe, 2034 .remove_new = panel_edp_platform_remove, 2035 .shutdown = panel_edp_platform_shutdown, 2036 }; 2037 2038 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep) 2039 { 2040 const struct of_device_id *id; 2041 2042 id = of_match_node(platform_of_match, aux_ep->dev.of_node); 2043 if (!id) 2044 return -ENODEV; 2045 2046 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux); 2047 } 2048 2049 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep) 2050 { 2051 panel_edp_remove(&aux_ep->dev); 2052 } 2053 2054 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep) 2055 { 2056 panel_edp_shutdown(&aux_ep->dev); 2057 } 2058 2059 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = { 2060 .driver = { 2061 .name = "panel-simple-dp-aux", 2062 .of_match_table = platform_of_match, /* Same as platform one! */ 2063 .pm = &panel_edp_pm_ops, 2064 }, 2065 .probe = panel_edp_dp_aux_ep_probe, 2066 .remove = panel_edp_dp_aux_ep_remove, 2067 .shutdown = panel_edp_dp_aux_ep_shutdown, 2068 }; 2069 2070 static int __init panel_edp_init(void) 2071 { 2072 int err; 2073 2074 err = platform_driver_register(&panel_edp_platform_driver); 2075 if (err < 0) 2076 return err; 2077 2078 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver); 2079 if (err < 0) 2080 goto err_did_platform_register; 2081 2082 return 0; 2083 2084 err_did_platform_register: 2085 platform_driver_unregister(&panel_edp_platform_driver); 2086 2087 return err; 2088 } 2089 module_init(panel_edp_init); 2090 2091 static void __exit panel_edp_exit(void) 2092 { 2093 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver); 2094 platform_driver_unregister(&panel_edp_platform_driver); 2095 } 2096 module_exit(panel_edp_exit); 2097 2098 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 2099 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels"); 2100 MODULE_LICENSE("GPL and additional rights"); 2101