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 * @prepare_to_enable: Time between prepare and enable. 75 * 76 * The minimum time, in milliseconds, that needs to have passed 77 * between when prepare finished and enable may begin. If at 78 * enable time less time has passed since prepare finished, 79 * the driver waits for the remaining time. 80 * 81 * If a fixed enable delay is also specified, we'll start 82 * counting before delaying for the fixed delay. 83 * 84 * If a fixed prepare delay is also specified, we won't start 85 * counting until after the fixed delay. We can't overlap this 86 * fixed delay with the min time because the fixed delay 87 * doesn't happen at the end of the function if a HPD GPIO was 88 * specified. 89 * 90 * In other words: 91 * prepare() 92 * ... 93 * // do fixed prepare delay 94 * // wait for HPD GPIO if applicable 95 * // start counting for prepare_to_enable 96 * 97 * enable() 98 * // do fixed enable delay 99 * // enforce prepare_to_enable min time 100 * 101 * This is not specified in a standard way on eDP timing diagrams. 102 * It is effectively the time from HPD going high till you can 103 * turn on the backlight. 104 */ 105 unsigned int prepare_to_enable; 106 107 /** 108 * @enable: Time for the panel to display a valid frame. 109 * 110 * The time (in milliseconds) that it takes for the panel to 111 * display the first valid frame after starting to receive 112 * video data. 113 * 114 * This is (T6-min + max(T7-max, T8-min)) on eDP timing diagrams or 115 * the delay after link training finishes until we can turn the 116 * backlight on and see valid data. 117 */ 118 unsigned int enable; 119 120 /** 121 * @disable: Time for the panel to turn the display off. 122 * 123 * The time (in milliseconds) that it takes for the panel to 124 * turn the display off (no content is visible). 125 * 126 * This is T9-min (delay from backlight off to end of valid video 127 * data) on eDP timing diagrams. It is not common to set. 128 */ 129 unsigned int disable; 130 131 /** 132 * @unprepare: Time to power down completely. 133 * 134 * The time (in milliseconds) that it takes for the panel 135 * to power itself down completely. 136 * 137 * This time is used to prevent a future "prepare" from 138 * starting until at least this many milliseconds has passed. 139 * If at prepare time less time has passed since unprepare 140 * finished, the driver waits for the remaining time. 141 * 142 * This is T12-min on eDP timing diagrams. 143 */ 144 unsigned int unprepare; 145 }; 146 147 /** 148 * struct panel_desc - Describes a simple panel. 149 */ 150 struct panel_desc { 151 /** 152 * @modes: Pointer to array of fixed modes appropriate for this panel. 153 * 154 * If only one mode then this can just be the address of the mode. 155 * NOTE: cannot be used with "timings" and also if this is specified 156 * then you cannot override the mode in the device tree. 157 */ 158 const struct drm_display_mode *modes; 159 160 /** @num_modes: Number of elements in modes array. */ 161 unsigned int num_modes; 162 163 /** 164 * @timings: Pointer to array of display timings 165 * 166 * NOTE: cannot be used with "modes" and also these will be used to 167 * validate a device tree override if one is present. 168 */ 169 const struct display_timing *timings; 170 171 /** @num_timings: Number of elements in timings array. */ 172 unsigned int num_timings; 173 174 /** @bpc: Bits per color. */ 175 unsigned int bpc; 176 177 /** @size: Structure containing the physical size of this panel. */ 178 struct { 179 /** 180 * @size.width: Width (in mm) of the active display area. 181 */ 182 unsigned int width; 183 184 /** 185 * @size.height: Height (in mm) of the active display area. 186 */ 187 unsigned int height; 188 } size; 189 190 /** @delay: Structure containing various delay values for this panel. */ 191 struct panel_delay delay; 192 }; 193 194 /** 195 * struct edp_panel_entry - Maps panel ID to delay / panel name. 196 */ 197 struct edp_panel_entry { 198 /** @panel_id: 32-bit ID for panel, encoded with drm_edid_encode_panel_id(). */ 199 u32 panel_id; 200 201 /** @delay: The power sequencing delays needed for this panel. */ 202 const struct panel_delay *delay; 203 204 /** @name: Name of this panel (for printing to logs). */ 205 const char *name; 206 }; 207 208 struct panel_edp { 209 struct drm_panel base; 210 bool enabled; 211 bool no_hpd; 212 213 bool prepared; 214 215 ktime_t prepared_time; 216 ktime_t unprepared_time; 217 218 const struct panel_desc *desc; 219 220 struct regulator *supply; 221 struct i2c_adapter *ddc; 222 struct drm_dp_aux *aux; 223 224 struct gpio_desc *enable_gpio; 225 struct gpio_desc *hpd_gpio; 226 227 const struct edp_panel_entry *detected_panel; 228 229 struct edid *edid; 230 231 struct drm_display_mode override_mode; 232 233 enum drm_panel_orientation orientation; 234 }; 235 236 static inline struct panel_edp *to_panel_edp(struct drm_panel *panel) 237 { 238 return container_of(panel, struct panel_edp, base); 239 } 240 241 static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel, 242 struct drm_connector *connector) 243 { 244 struct drm_display_mode *mode; 245 unsigned int i, num = 0; 246 247 for (i = 0; i < panel->desc->num_timings; i++) { 248 const struct display_timing *dt = &panel->desc->timings[i]; 249 struct videomode vm; 250 251 videomode_from_timing(dt, &vm); 252 mode = drm_mode_create(connector->dev); 253 if (!mode) { 254 dev_err(panel->base.dev, "failed to add mode %ux%u\n", 255 dt->hactive.typ, dt->vactive.typ); 256 continue; 257 } 258 259 drm_display_mode_from_videomode(&vm, mode); 260 261 mode->type |= DRM_MODE_TYPE_DRIVER; 262 263 if (panel->desc->num_timings == 1) 264 mode->type |= DRM_MODE_TYPE_PREFERRED; 265 266 drm_mode_probed_add(connector, mode); 267 num++; 268 } 269 270 return num; 271 } 272 273 static unsigned int panel_edp_get_display_modes(struct panel_edp *panel, 274 struct drm_connector *connector) 275 { 276 struct drm_display_mode *mode; 277 unsigned int i, num = 0; 278 279 for (i = 0; i < panel->desc->num_modes; i++) { 280 const struct drm_display_mode *m = &panel->desc->modes[i]; 281 282 mode = drm_mode_duplicate(connector->dev, m); 283 if (!mode) { 284 dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n", 285 m->hdisplay, m->vdisplay, 286 drm_mode_vrefresh(m)); 287 continue; 288 } 289 290 mode->type |= DRM_MODE_TYPE_DRIVER; 291 292 if (panel->desc->num_modes == 1) 293 mode->type |= DRM_MODE_TYPE_PREFERRED; 294 295 drm_mode_set_name(mode); 296 297 drm_mode_probed_add(connector, mode); 298 num++; 299 } 300 301 return num; 302 } 303 304 static int panel_edp_get_non_edid_modes(struct panel_edp *panel, 305 struct drm_connector *connector) 306 { 307 struct drm_display_mode *mode; 308 bool has_override = panel->override_mode.type; 309 unsigned int num = 0; 310 311 if (!panel->desc) 312 return 0; 313 314 if (has_override) { 315 mode = drm_mode_duplicate(connector->dev, 316 &panel->override_mode); 317 if (mode) { 318 drm_mode_probed_add(connector, mode); 319 num = 1; 320 } else { 321 dev_err(panel->base.dev, "failed to add override mode\n"); 322 } 323 } 324 325 /* Only add timings if override was not there or failed to validate */ 326 if (num == 0 && panel->desc->num_timings) 327 num = panel_edp_get_timings_modes(panel, connector); 328 329 /* 330 * Only add fixed modes if timings/override added no mode. 331 * 332 * We should only ever have either the display timings specified 333 * or a fixed mode. Anything else is rather bogus. 334 */ 335 WARN_ON(panel->desc->num_timings && panel->desc->num_modes); 336 if (num == 0) 337 num = panel_edp_get_display_modes(panel, connector); 338 339 connector->display_info.bpc = panel->desc->bpc; 340 connector->display_info.width_mm = panel->desc->size.width; 341 connector->display_info.height_mm = panel->desc->size.height; 342 343 return num; 344 } 345 346 static void panel_edp_wait(ktime_t start_ktime, unsigned int min_ms) 347 { 348 ktime_t now_ktime, min_ktime; 349 350 if (!min_ms) 351 return; 352 353 min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms)); 354 now_ktime = ktime_get(); 355 356 if (ktime_before(now_ktime, min_ktime)) 357 msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1); 358 } 359 360 static int panel_edp_disable(struct drm_panel *panel) 361 { 362 struct panel_edp *p = to_panel_edp(panel); 363 364 if (!p->enabled) 365 return 0; 366 367 if (p->desc->delay.disable) 368 msleep(p->desc->delay.disable); 369 370 p->enabled = false; 371 372 return 0; 373 } 374 375 static int panel_edp_suspend(struct device *dev) 376 { 377 struct panel_edp *p = dev_get_drvdata(dev); 378 379 gpiod_set_value_cansleep(p->enable_gpio, 0); 380 regulator_disable(p->supply); 381 p->unprepared_time = ktime_get(); 382 383 return 0; 384 } 385 386 static int panel_edp_unprepare(struct drm_panel *panel) 387 { 388 struct panel_edp *p = to_panel_edp(panel); 389 int ret; 390 391 /* Unpreparing when already unprepared is a no-op */ 392 if (!p->prepared) 393 return 0; 394 395 pm_runtime_mark_last_busy(panel->dev); 396 ret = pm_runtime_put_autosuspend(panel->dev); 397 if (ret < 0) 398 return ret; 399 p->prepared = false; 400 401 return 0; 402 } 403 404 static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p) 405 { 406 p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); 407 if (IS_ERR(p->hpd_gpio)) 408 return dev_err_probe(dev, PTR_ERR(p->hpd_gpio), 409 "failed to get 'hpd' GPIO\n"); 410 411 return 0; 412 } 413 414 static bool panel_edp_can_read_hpd(struct panel_edp *p) 415 { 416 return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted)); 417 } 418 419 static int panel_edp_prepare_once(struct panel_edp *p) 420 { 421 struct device *dev = p->base.dev; 422 unsigned int delay; 423 int err; 424 int hpd_asserted; 425 unsigned long hpd_wait_us; 426 427 panel_edp_wait(p->unprepared_time, p->desc->delay.unprepare); 428 429 err = regulator_enable(p->supply); 430 if (err < 0) { 431 dev_err(dev, "failed to enable supply: %d\n", err); 432 return err; 433 } 434 435 gpiod_set_value_cansleep(p->enable_gpio, 1); 436 437 delay = p->desc->delay.hpd_reliable; 438 if (p->no_hpd) 439 delay = max(delay, p->desc->delay.hpd_absent); 440 if (delay) 441 msleep(delay); 442 443 if (panel_edp_can_read_hpd(p)) { 444 if (p->desc->delay.hpd_absent) 445 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL; 446 else 447 hpd_wait_us = 2000000; 448 449 if (p->hpd_gpio) { 450 err = readx_poll_timeout(gpiod_get_value_cansleep, 451 p->hpd_gpio, hpd_asserted, 452 hpd_asserted, 1000, hpd_wait_us); 453 if (hpd_asserted < 0) 454 err = hpd_asserted; 455 } else { 456 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us); 457 } 458 459 if (err) { 460 if (err != -ETIMEDOUT) 461 dev_err(dev, 462 "error waiting for hpd GPIO: %d\n", err); 463 goto error; 464 } 465 } 466 467 p->prepared_time = ktime_get(); 468 469 return 0; 470 471 error: 472 gpiod_set_value_cansleep(p->enable_gpio, 0); 473 regulator_disable(p->supply); 474 p->unprepared_time = ktime_get(); 475 476 return err; 477 } 478 479 /* 480 * Some panels simply don't always come up and need to be power cycled to 481 * work properly. We'll allow for a handful of retries. 482 */ 483 #define MAX_PANEL_PREPARE_TRIES 5 484 485 static int panel_edp_resume(struct device *dev) 486 { 487 struct panel_edp *p = dev_get_drvdata(dev); 488 int ret; 489 int try; 490 491 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) { 492 ret = panel_edp_prepare_once(p); 493 if (ret != -ETIMEDOUT) 494 break; 495 } 496 497 if (ret == -ETIMEDOUT) 498 dev_err(dev, "Prepare timeout after %d tries\n", try); 499 else if (try) 500 dev_warn(dev, "Prepare needed %d retries\n", try); 501 502 return ret; 503 } 504 505 static int panel_edp_prepare(struct drm_panel *panel) 506 { 507 struct panel_edp *p = to_panel_edp(panel); 508 int ret; 509 510 /* Preparing when already prepared is a no-op */ 511 if (p->prepared) 512 return 0; 513 514 ret = pm_runtime_get_sync(panel->dev); 515 if (ret < 0) { 516 pm_runtime_put_autosuspend(panel->dev); 517 return ret; 518 } 519 520 p->prepared = true; 521 522 return 0; 523 } 524 525 static int panel_edp_enable(struct drm_panel *panel) 526 { 527 struct panel_edp *p = to_panel_edp(panel); 528 unsigned int delay; 529 530 if (p->enabled) 531 return 0; 532 533 delay = p->desc->delay.enable; 534 535 /* 536 * If there is a "prepare_to_enable" delay then that's supposed to be 537 * the delay from HPD going high until we can turn the backlight on. 538 * However, we can only count this if HPD is readable by the panel 539 * driver. 540 * 541 * If we aren't handling the HPD pin ourselves then the best we 542 * can do is assume that HPD went high immediately before we were 543 * called (and link training took zero time). Note that "no-hpd" 544 * actually counts as handling HPD ourselves since we're doing the 545 * worst case delay (in prepare) ourselves. 546 * 547 * NOTE: if we ever end up in this "if" statement then we're 548 * guaranteed that the panel_edp_wait() call below will do no delay. 549 * It already handles that case, though, so we don't need any special 550 * code for it. 551 */ 552 if (p->desc->delay.prepare_to_enable && 553 !panel_edp_can_read_hpd(p) && !p->no_hpd) 554 delay = max(delay, p->desc->delay.prepare_to_enable); 555 556 if (delay) 557 msleep(delay); 558 559 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable); 560 561 p->enabled = true; 562 563 return 0; 564 } 565 566 static int panel_edp_get_modes(struct drm_panel *panel, 567 struct drm_connector *connector) 568 { 569 struct panel_edp *p = to_panel_edp(panel); 570 int num = 0; 571 572 /* probe EDID if a DDC bus is available */ 573 if (p->ddc) { 574 pm_runtime_get_sync(panel->dev); 575 576 if (!p->edid) 577 p->edid = drm_get_edid(connector, p->ddc); 578 579 if (p->edid) 580 num += drm_add_edid_modes(connector, p->edid); 581 582 pm_runtime_mark_last_busy(panel->dev); 583 pm_runtime_put_autosuspend(panel->dev); 584 } 585 586 /* 587 * Add hard-coded panel modes. Don't call this if there are no timings 588 * and no modes (the generic edp-panel case) because it will clobber 589 * the display_info that was already set by drm_add_edid_modes(). 590 */ 591 if (p->desc->num_timings || p->desc->num_modes) 592 num += panel_edp_get_non_edid_modes(p, connector); 593 else if (!num) 594 dev_warn(p->base.dev, "No display modes\n"); 595 596 /* 597 * TODO: Remove once all drm drivers call 598 * drm_connector_set_orientation_from_panel() 599 */ 600 drm_connector_set_panel_orientation(connector, p->orientation); 601 602 return num; 603 } 604 605 static int panel_edp_get_timings(struct drm_panel *panel, 606 unsigned int num_timings, 607 struct display_timing *timings) 608 { 609 struct panel_edp *p = to_panel_edp(panel); 610 unsigned int i; 611 612 if (p->desc->num_timings < num_timings) 613 num_timings = p->desc->num_timings; 614 615 if (timings) 616 for (i = 0; i < num_timings; i++) 617 timings[i] = p->desc->timings[i]; 618 619 return p->desc->num_timings; 620 } 621 622 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel) 623 { 624 struct panel_edp *p = to_panel_edp(panel); 625 626 return p->orientation; 627 } 628 629 static int detected_panel_show(struct seq_file *s, void *data) 630 { 631 struct drm_panel *panel = s->private; 632 struct panel_edp *p = to_panel_edp(panel); 633 634 if (IS_ERR(p->detected_panel)) 635 seq_puts(s, "UNKNOWN\n"); 636 else if (!p->detected_panel) 637 seq_puts(s, "HARDCODED\n"); 638 else 639 seq_printf(s, "%s\n", p->detected_panel->name); 640 641 return 0; 642 } 643 644 DEFINE_SHOW_ATTRIBUTE(detected_panel); 645 646 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root) 647 { 648 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops); 649 } 650 651 static const struct drm_panel_funcs panel_edp_funcs = { 652 .disable = panel_edp_disable, 653 .unprepare = panel_edp_unprepare, 654 .prepare = panel_edp_prepare, 655 .enable = panel_edp_enable, 656 .get_modes = panel_edp_get_modes, 657 .get_orientation = panel_edp_get_orientation, 658 .get_timings = panel_edp_get_timings, 659 .debugfs_init = panel_edp_debugfs_init, 660 }; 661 662 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \ 663 (to_check->field.typ >= bounds->field.min && \ 664 to_check->field.typ <= bounds->field.max) 665 static void panel_edp_parse_panel_timing_node(struct device *dev, 666 struct panel_edp *panel, 667 const struct display_timing *ot) 668 { 669 const struct panel_desc *desc = panel->desc; 670 struct videomode vm; 671 unsigned int i; 672 673 if (WARN_ON(desc->num_modes)) { 674 dev_err(dev, "Reject override mode: panel has a fixed mode\n"); 675 return; 676 } 677 if (WARN_ON(!desc->num_timings)) { 678 dev_err(dev, "Reject override mode: no timings specified\n"); 679 return; 680 } 681 682 for (i = 0; i < panel->desc->num_timings; i++) { 683 const struct display_timing *dt = &panel->desc->timings[i]; 684 685 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) || 686 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) || 687 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) || 688 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) || 689 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) || 690 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) || 691 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) || 692 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len)) 693 continue; 694 695 if (ot->flags != dt->flags) 696 continue; 697 698 videomode_from_timing(ot, &vm); 699 drm_display_mode_from_videomode(&vm, &panel->override_mode); 700 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER | 701 DRM_MODE_TYPE_PREFERRED; 702 break; 703 } 704 705 if (WARN_ON(!panel->override_mode.type)) 706 dev_err(dev, "Reject override mode: No display_timing found\n"); 707 } 708 709 static const struct edp_panel_entry *find_edp_panel(u32 panel_id); 710 711 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel) 712 { 713 struct panel_desc *desc; 714 u32 panel_id; 715 char vend[4]; 716 u16 product_id; 717 u32 reliable_ms = 0; 718 u32 absent_ms = 0; 719 int ret; 720 721 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); 722 if (!desc) 723 return -ENOMEM; 724 panel->desc = desc; 725 726 /* 727 * Read the dts properties for the initial probe. These are used by 728 * the runtime resume code which will get called by the 729 * pm_runtime_get_sync() call below. 730 */ 731 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms); 732 desc->delay.hpd_reliable = reliable_ms; 733 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms); 734 desc->delay.hpd_absent = absent_ms; 735 736 /* Power the panel on so we can read the EDID */ 737 ret = pm_runtime_get_sync(dev); 738 if (ret < 0) { 739 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret); 740 goto exit; 741 } 742 743 panel_id = drm_edid_get_panel_id(panel->ddc); 744 if (!panel_id) { 745 dev_err(dev, "Couldn't identify panel via EDID\n"); 746 ret = -EIO; 747 goto exit; 748 } 749 drm_edid_decode_panel_id(panel_id, vend, &product_id); 750 751 panel->detected_panel = find_edp_panel(panel_id); 752 753 /* 754 * We're using non-optimized timings and want it really obvious that 755 * someone needs to add an entry to the table, so we'll do a WARN_ON 756 * splat. 757 */ 758 if (WARN_ON(!panel->detected_panel)) { 759 dev_warn(dev, 760 "Unknown panel %s %#06x, using conservative timings\n", 761 vend, product_id); 762 763 /* 764 * It's highly likely that the panel will work if we use very 765 * conservative timings, so let's do that. We already know that 766 * the HPD-related delays must have worked since we got this 767 * far, so we really just need the "unprepare" / "enable" 768 * delays. We don't need "prepare_to_enable" since that 769 * overlaps the "enable" delay anyway. 770 * 771 * Nearly all panels have a "unprepare" delay of 500 ms though 772 * there are a few with 1000. Let's stick 2000 in just to be 773 * super conservative. 774 * 775 * An "enable" delay of 80 ms seems the most common, but we'll 776 * throw in 200 ms to be safe. 777 */ 778 desc->delay.unprepare = 2000; 779 desc->delay.enable = 200; 780 781 panel->detected_panel = ERR_PTR(-EINVAL); 782 } else { 783 dev_info(dev, "Detected %s %s (%#06x)\n", 784 vend, panel->detected_panel->name, product_id); 785 786 /* Update the delay; everything else comes from EDID */ 787 desc->delay = *panel->detected_panel->delay; 788 } 789 790 ret = 0; 791 exit: 792 pm_runtime_mark_last_busy(dev); 793 pm_runtime_put_autosuspend(dev); 794 795 return ret; 796 } 797 798 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc, 799 struct drm_dp_aux *aux) 800 { 801 struct panel_edp *panel; 802 struct display_timing dt; 803 struct device_node *ddc; 804 int err; 805 806 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); 807 if (!panel) 808 return -ENOMEM; 809 810 panel->enabled = false; 811 panel->prepared_time = 0; 812 panel->desc = desc; 813 panel->aux = aux; 814 815 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd"); 816 if (!panel->no_hpd) { 817 err = panel_edp_get_hpd_gpio(dev, panel); 818 if (err) 819 return err; 820 } 821 822 panel->supply = devm_regulator_get(dev, "power"); 823 if (IS_ERR(panel->supply)) 824 return PTR_ERR(panel->supply); 825 826 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", 827 GPIOD_OUT_LOW); 828 if (IS_ERR(panel->enable_gpio)) 829 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio), 830 "failed to request GPIO\n"); 831 832 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); 833 if (err) { 834 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); 835 return err; 836 } 837 838 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); 839 if (ddc) { 840 panel->ddc = of_find_i2c_adapter_by_node(ddc); 841 of_node_put(ddc); 842 843 if (!panel->ddc) 844 return -EPROBE_DEFER; 845 } else if (aux) { 846 panel->ddc = &aux->ddc; 847 } 848 849 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt)) 850 panel_edp_parse_panel_timing_node(dev, panel, &dt); 851 852 dev_set_drvdata(dev, panel); 853 854 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP); 855 856 err = drm_panel_of_backlight(&panel->base); 857 if (err) 858 goto err_finished_ddc_init; 859 860 /* 861 * We use runtime PM for prepare / unprepare since those power the panel 862 * on and off and those can be very slow operations. This is important 863 * to optimize powering the panel on briefly to read the EDID before 864 * fully enabling the panel. 865 */ 866 pm_runtime_enable(dev); 867 pm_runtime_set_autosuspend_delay(dev, 1000); 868 pm_runtime_use_autosuspend(dev); 869 870 if (of_device_is_compatible(dev->of_node, "edp-panel")) { 871 err = generic_edp_panel_probe(dev, panel); 872 if (err) { 873 dev_err_probe(dev, err, 874 "Couldn't detect panel nor find a fallback\n"); 875 goto err_finished_pm_runtime; 876 } 877 /* generic_edp_panel_probe() replaces desc in the panel */ 878 desc = panel->desc; 879 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) { 880 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc); 881 } 882 883 if (!panel->base.backlight && panel->aux) { 884 pm_runtime_get_sync(dev); 885 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); 886 pm_runtime_mark_last_busy(dev); 887 pm_runtime_put_autosuspend(dev); 888 if (err) 889 goto err_finished_pm_runtime; 890 } 891 892 drm_panel_add(&panel->base); 893 894 return 0; 895 896 err_finished_pm_runtime: 897 pm_runtime_dont_use_autosuspend(dev); 898 pm_runtime_disable(dev); 899 err_finished_ddc_init: 900 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 901 put_device(&panel->ddc->dev); 902 903 return err; 904 } 905 906 static int panel_edp_remove(struct device *dev) 907 { 908 struct panel_edp *panel = dev_get_drvdata(dev); 909 910 drm_panel_remove(&panel->base); 911 drm_panel_disable(&panel->base); 912 drm_panel_unprepare(&panel->base); 913 914 pm_runtime_dont_use_autosuspend(dev); 915 pm_runtime_disable(dev); 916 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 917 put_device(&panel->ddc->dev); 918 919 kfree(panel->edid); 920 panel->edid = NULL; 921 922 return 0; 923 } 924 925 static void panel_edp_shutdown(struct device *dev) 926 { 927 struct panel_edp *panel = dev_get_drvdata(dev); 928 929 drm_panel_disable(&panel->base); 930 drm_panel_unprepare(&panel->base); 931 } 932 933 static const struct display_timing auo_b101ean01_timing = { 934 .pixelclock = { 65300000, 72500000, 75000000 }, 935 .hactive = { 1280, 1280, 1280 }, 936 .hfront_porch = { 18, 119, 119 }, 937 .hback_porch = { 21, 21, 21 }, 938 .hsync_len = { 32, 32, 32 }, 939 .vactive = { 800, 800, 800 }, 940 .vfront_porch = { 4, 4, 4 }, 941 .vback_porch = { 8, 8, 8 }, 942 .vsync_len = { 18, 20, 20 }, 943 }; 944 945 static const struct panel_desc auo_b101ean01 = { 946 .timings = &auo_b101ean01_timing, 947 .num_timings = 1, 948 .bpc = 6, 949 .size = { 950 .width = 217, 951 .height = 136, 952 }, 953 }; 954 955 static const struct drm_display_mode auo_b116xak01_mode = { 956 .clock = 69300, 957 .hdisplay = 1366, 958 .hsync_start = 1366 + 48, 959 .hsync_end = 1366 + 48 + 32, 960 .htotal = 1366 + 48 + 32 + 10, 961 .vdisplay = 768, 962 .vsync_start = 768 + 4, 963 .vsync_end = 768 + 4 + 6, 964 .vtotal = 768 + 4 + 6 + 15, 965 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 966 }; 967 968 static const struct panel_desc auo_b116xak01 = { 969 .modes = &auo_b116xak01_mode, 970 .num_modes = 1, 971 .bpc = 6, 972 .size = { 973 .width = 256, 974 .height = 144, 975 }, 976 .delay = { 977 .hpd_absent = 200, 978 }, 979 }; 980 981 static const struct drm_display_mode auo_b116xw03_mode = { 982 .clock = 70589, 983 .hdisplay = 1366, 984 .hsync_start = 1366 + 40, 985 .hsync_end = 1366 + 40 + 40, 986 .htotal = 1366 + 40 + 40 + 32, 987 .vdisplay = 768, 988 .vsync_start = 768 + 10, 989 .vsync_end = 768 + 10 + 12, 990 .vtotal = 768 + 10 + 12 + 6, 991 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 992 }; 993 994 static const struct panel_desc auo_b116xw03 = { 995 .modes = &auo_b116xw03_mode, 996 .num_modes = 1, 997 .bpc = 6, 998 .size = { 999 .width = 256, 1000 .height = 144, 1001 }, 1002 .delay = { 1003 .enable = 400, 1004 }, 1005 }; 1006 1007 static const struct drm_display_mode auo_b133han05_mode = { 1008 .clock = 142600, 1009 .hdisplay = 1920, 1010 .hsync_start = 1920 + 58, 1011 .hsync_end = 1920 + 58 + 42, 1012 .htotal = 1920 + 58 + 42 + 60, 1013 .vdisplay = 1080, 1014 .vsync_start = 1080 + 3, 1015 .vsync_end = 1080 + 3 + 5, 1016 .vtotal = 1080 + 3 + 5 + 54, 1017 }; 1018 1019 static const struct panel_desc auo_b133han05 = { 1020 .modes = &auo_b133han05_mode, 1021 .num_modes = 1, 1022 .bpc = 8, 1023 .size = { 1024 .width = 293, 1025 .height = 165, 1026 }, 1027 .delay = { 1028 .hpd_reliable = 100, 1029 .enable = 20, 1030 .unprepare = 50, 1031 }, 1032 }; 1033 1034 static const struct drm_display_mode auo_b133htn01_mode = { 1035 .clock = 150660, 1036 .hdisplay = 1920, 1037 .hsync_start = 1920 + 172, 1038 .hsync_end = 1920 + 172 + 80, 1039 .htotal = 1920 + 172 + 80 + 60, 1040 .vdisplay = 1080, 1041 .vsync_start = 1080 + 25, 1042 .vsync_end = 1080 + 25 + 10, 1043 .vtotal = 1080 + 25 + 10 + 10, 1044 }; 1045 1046 static const struct panel_desc auo_b133htn01 = { 1047 .modes = &auo_b133htn01_mode, 1048 .num_modes = 1, 1049 .bpc = 6, 1050 .size = { 1051 .width = 293, 1052 .height = 165, 1053 }, 1054 .delay = { 1055 .hpd_reliable = 105, 1056 .enable = 20, 1057 .unprepare = 50, 1058 }, 1059 }; 1060 1061 static const struct drm_display_mode auo_b133xtn01_mode = { 1062 .clock = 69500, 1063 .hdisplay = 1366, 1064 .hsync_start = 1366 + 48, 1065 .hsync_end = 1366 + 48 + 32, 1066 .htotal = 1366 + 48 + 32 + 20, 1067 .vdisplay = 768, 1068 .vsync_start = 768 + 3, 1069 .vsync_end = 768 + 3 + 6, 1070 .vtotal = 768 + 3 + 6 + 13, 1071 }; 1072 1073 static const struct panel_desc auo_b133xtn01 = { 1074 .modes = &auo_b133xtn01_mode, 1075 .num_modes = 1, 1076 .bpc = 6, 1077 .size = { 1078 .width = 293, 1079 .height = 165, 1080 }, 1081 }; 1082 1083 static const struct drm_display_mode auo_b140han06_mode = { 1084 .clock = 141000, 1085 .hdisplay = 1920, 1086 .hsync_start = 1920 + 16, 1087 .hsync_end = 1920 + 16 + 16, 1088 .htotal = 1920 + 16 + 16 + 152, 1089 .vdisplay = 1080, 1090 .vsync_start = 1080 + 3, 1091 .vsync_end = 1080 + 3 + 14, 1092 .vtotal = 1080 + 3 + 14 + 19, 1093 }; 1094 1095 static const struct panel_desc auo_b140han06 = { 1096 .modes = &auo_b140han06_mode, 1097 .num_modes = 1, 1098 .bpc = 8, 1099 .size = { 1100 .width = 309, 1101 .height = 174, 1102 }, 1103 .delay = { 1104 .hpd_reliable = 100, 1105 .enable = 20, 1106 .unprepare = 50, 1107 }, 1108 }; 1109 1110 static const struct drm_display_mode boe_nv101wxmn51_modes[] = { 1111 { 1112 .clock = 71900, 1113 .hdisplay = 1280, 1114 .hsync_start = 1280 + 48, 1115 .hsync_end = 1280 + 48 + 32, 1116 .htotal = 1280 + 48 + 32 + 80, 1117 .vdisplay = 800, 1118 .vsync_start = 800 + 3, 1119 .vsync_end = 800 + 3 + 5, 1120 .vtotal = 800 + 3 + 5 + 24, 1121 }, 1122 { 1123 .clock = 57500, 1124 .hdisplay = 1280, 1125 .hsync_start = 1280 + 48, 1126 .hsync_end = 1280 + 48 + 32, 1127 .htotal = 1280 + 48 + 32 + 80, 1128 .vdisplay = 800, 1129 .vsync_start = 800 + 3, 1130 .vsync_end = 800 + 3 + 5, 1131 .vtotal = 800 + 3 + 5 + 24, 1132 }, 1133 }; 1134 1135 static const struct panel_desc boe_nv101wxmn51 = { 1136 .modes = boe_nv101wxmn51_modes, 1137 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes), 1138 .bpc = 8, 1139 .size = { 1140 .width = 217, 1141 .height = 136, 1142 }, 1143 .delay = { 1144 /* TODO: should be hpd-absent and no-hpd should be set? */ 1145 .hpd_reliable = 210, 1146 .enable = 50, 1147 .unprepare = 160, 1148 }, 1149 }; 1150 1151 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = { 1152 { 1153 .clock = 207800, 1154 .hdisplay = 2160, 1155 .hsync_start = 2160 + 48, 1156 .hsync_end = 2160 + 48 + 32, 1157 .htotal = 2160 + 48 + 32 + 100, 1158 .vdisplay = 1440, 1159 .vsync_start = 1440 + 3, 1160 .vsync_end = 1440 + 3 + 6, 1161 .vtotal = 1440 + 3 + 6 + 31, 1162 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1163 }, 1164 { 1165 .clock = 138500, 1166 .hdisplay = 2160, 1167 .hsync_start = 2160 + 48, 1168 .hsync_end = 2160 + 48 + 32, 1169 .htotal = 2160 + 48 + 32 + 100, 1170 .vdisplay = 1440, 1171 .vsync_start = 1440 + 3, 1172 .vsync_end = 1440 + 3 + 6, 1173 .vtotal = 1440 + 3 + 6 + 31, 1174 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1175 }, 1176 }; 1177 1178 static const struct panel_desc boe_nv110wtm_n61 = { 1179 .modes = boe_nv110wtm_n61_modes, 1180 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes), 1181 .bpc = 8, 1182 .size = { 1183 .width = 233, 1184 .height = 155, 1185 }, 1186 .delay = { 1187 .hpd_absent = 200, 1188 .prepare_to_enable = 80, 1189 .enable = 50, 1190 .unprepare = 500, 1191 }, 1192 }; 1193 1194 /* Also used for boe_nv133fhm_n62 */ 1195 static const struct drm_display_mode boe_nv133fhm_n61_modes = { 1196 .clock = 147840, 1197 .hdisplay = 1920, 1198 .hsync_start = 1920 + 48, 1199 .hsync_end = 1920 + 48 + 32, 1200 .htotal = 1920 + 48 + 32 + 200, 1201 .vdisplay = 1080, 1202 .vsync_start = 1080 + 3, 1203 .vsync_end = 1080 + 3 + 6, 1204 .vtotal = 1080 + 3 + 6 + 31, 1205 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1206 }; 1207 1208 /* Also used for boe_nv133fhm_n62 */ 1209 static const struct panel_desc boe_nv133fhm_n61 = { 1210 .modes = &boe_nv133fhm_n61_modes, 1211 .num_modes = 1, 1212 .bpc = 6, 1213 .size = { 1214 .width = 294, 1215 .height = 165, 1216 }, 1217 .delay = { 1218 /* 1219 * When power is first given to the panel there's a short 1220 * spike on the HPD line. It was explained that this spike 1221 * was until the TCON data download was complete. On 1222 * one system this was measured at 8 ms. We'll put 15 ms 1223 * in the prepare delay just to be safe. That means: 1224 * - If HPD isn't hooked up you still have 200 ms delay. 1225 * - If HPD is hooked up we won't try to look at it for the 1226 * first 15 ms. 1227 */ 1228 .hpd_reliable = 15, 1229 .hpd_absent = 200, 1230 1231 .unprepare = 500, 1232 }, 1233 }; 1234 1235 static const struct drm_display_mode boe_nv140fhmn49_modes[] = { 1236 { 1237 .clock = 148500, 1238 .hdisplay = 1920, 1239 .hsync_start = 1920 + 48, 1240 .hsync_end = 1920 + 48 + 32, 1241 .htotal = 2200, 1242 .vdisplay = 1080, 1243 .vsync_start = 1080 + 3, 1244 .vsync_end = 1080 + 3 + 5, 1245 .vtotal = 1125, 1246 }, 1247 }; 1248 1249 static const struct panel_desc boe_nv140fhmn49 = { 1250 .modes = boe_nv140fhmn49_modes, 1251 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes), 1252 .bpc = 6, 1253 .size = { 1254 .width = 309, 1255 .height = 174, 1256 }, 1257 .delay = { 1258 /* TODO: should be hpd-absent and no-hpd should be set? */ 1259 .hpd_reliable = 210, 1260 .enable = 50, 1261 .unprepare = 160, 1262 }, 1263 }; 1264 1265 static const struct drm_display_mode innolux_n116bca_ea1_mode = { 1266 .clock = 76420, 1267 .hdisplay = 1366, 1268 .hsync_start = 1366 + 136, 1269 .hsync_end = 1366 + 136 + 30, 1270 .htotal = 1366 + 136 + 30 + 60, 1271 .vdisplay = 768, 1272 .vsync_start = 768 + 8, 1273 .vsync_end = 768 + 8 + 12, 1274 .vtotal = 768 + 8 + 12 + 12, 1275 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1276 }; 1277 1278 static const struct panel_desc innolux_n116bca_ea1 = { 1279 .modes = &innolux_n116bca_ea1_mode, 1280 .num_modes = 1, 1281 .bpc = 6, 1282 .size = { 1283 .width = 256, 1284 .height = 144, 1285 }, 1286 .delay = { 1287 .hpd_absent = 200, 1288 .enable = 80, 1289 .disable = 50, 1290 .unprepare = 500, 1291 }, 1292 }; 1293 1294 /* 1295 * Datasheet specifies that at 60 Hz refresh rate: 1296 * - total horizontal time: { 1506, 1592, 1716 } 1297 * - total vertical time: { 788, 800, 868 } 1298 * 1299 * ...but doesn't go into exactly how that should be split into a front 1300 * porch, back porch, or sync length. For now we'll leave a single setting 1301 * here which allows a bit of tweaking of the pixel clock at the expense of 1302 * refresh rate. 1303 */ 1304 static const struct display_timing innolux_n116bge_timing = { 1305 .pixelclock = { 72600000, 76420000, 80240000 }, 1306 .hactive = { 1366, 1366, 1366 }, 1307 .hfront_porch = { 136, 136, 136 }, 1308 .hback_porch = { 60, 60, 60 }, 1309 .hsync_len = { 30, 30, 30 }, 1310 .vactive = { 768, 768, 768 }, 1311 .vfront_porch = { 8, 8, 8 }, 1312 .vback_porch = { 12, 12, 12 }, 1313 .vsync_len = { 12, 12, 12 }, 1314 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1315 }; 1316 1317 static const struct panel_desc innolux_n116bge = { 1318 .timings = &innolux_n116bge_timing, 1319 .num_timings = 1, 1320 .bpc = 6, 1321 .size = { 1322 .width = 256, 1323 .height = 144, 1324 }, 1325 }; 1326 1327 static const struct drm_display_mode innolux_n125hce_gn1_mode = { 1328 .clock = 162000, 1329 .hdisplay = 1920, 1330 .hsync_start = 1920 + 40, 1331 .hsync_end = 1920 + 40 + 40, 1332 .htotal = 1920 + 40 + 40 + 80, 1333 .vdisplay = 1080, 1334 .vsync_start = 1080 + 4, 1335 .vsync_end = 1080 + 4 + 4, 1336 .vtotal = 1080 + 4 + 4 + 24, 1337 }; 1338 1339 static const struct panel_desc innolux_n125hce_gn1 = { 1340 .modes = &innolux_n125hce_gn1_mode, 1341 .num_modes = 1, 1342 .bpc = 8, 1343 .size = { 1344 .width = 276, 1345 .height = 155, 1346 }, 1347 }; 1348 1349 static const struct drm_display_mode innolux_p120zdg_bf1_mode = { 1350 .clock = 206016, 1351 .hdisplay = 2160, 1352 .hsync_start = 2160 + 48, 1353 .hsync_end = 2160 + 48 + 32, 1354 .htotal = 2160 + 48 + 32 + 80, 1355 .vdisplay = 1440, 1356 .vsync_start = 1440 + 3, 1357 .vsync_end = 1440 + 3 + 10, 1358 .vtotal = 1440 + 3 + 10 + 27, 1359 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1360 }; 1361 1362 static const struct panel_desc innolux_p120zdg_bf1 = { 1363 .modes = &innolux_p120zdg_bf1_mode, 1364 .num_modes = 1, 1365 .bpc = 8, 1366 .size = { 1367 .width = 254, 1368 .height = 169, 1369 }, 1370 .delay = { 1371 .hpd_absent = 200, 1372 .unprepare = 500, 1373 }, 1374 }; 1375 1376 static const struct drm_display_mode ivo_m133nwf4_r0_mode = { 1377 .clock = 138778, 1378 .hdisplay = 1920, 1379 .hsync_start = 1920 + 24, 1380 .hsync_end = 1920 + 24 + 48, 1381 .htotal = 1920 + 24 + 48 + 88, 1382 .vdisplay = 1080, 1383 .vsync_start = 1080 + 3, 1384 .vsync_end = 1080 + 3 + 12, 1385 .vtotal = 1080 + 3 + 12 + 17, 1386 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1387 }; 1388 1389 static const struct panel_desc ivo_m133nwf4_r0 = { 1390 .modes = &ivo_m133nwf4_r0_mode, 1391 .num_modes = 1, 1392 .bpc = 8, 1393 .size = { 1394 .width = 294, 1395 .height = 165, 1396 }, 1397 .delay = { 1398 .hpd_absent = 200, 1399 .unprepare = 500, 1400 }, 1401 }; 1402 1403 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = { 1404 .clock = 81000, 1405 .hdisplay = 1366, 1406 .hsync_start = 1366 + 40, 1407 .hsync_end = 1366 + 40 + 32, 1408 .htotal = 1366 + 40 + 32 + 62, 1409 .vdisplay = 768, 1410 .vsync_start = 768 + 5, 1411 .vsync_end = 768 + 5 + 5, 1412 .vtotal = 768 + 5 + 5 + 122, 1413 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1414 }; 1415 1416 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = { 1417 .modes = &kingdisplay_kd116n21_30nv_a010_mode, 1418 .num_modes = 1, 1419 .bpc = 6, 1420 .size = { 1421 .width = 256, 1422 .height = 144, 1423 }, 1424 .delay = { 1425 .hpd_absent = 200, 1426 }, 1427 }; 1428 1429 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = { 1430 .clock = 200000, 1431 .hdisplay = 1536, 1432 .hsync_start = 1536 + 12, 1433 .hsync_end = 1536 + 12 + 16, 1434 .htotal = 1536 + 12 + 16 + 48, 1435 .vdisplay = 2048, 1436 .vsync_start = 2048 + 8, 1437 .vsync_end = 2048 + 8 + 4, 1438 .vtotal = 2048 + 8 + 4 + 8, 1439 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1440 }; 1441 1442 static const struct panel_desc lg_lp079qx1_sp0v = { 1443 .modes = &lg_lp079qx1_sp0v_mode, 1444 .num_modes = 1, 1445 .size = { 1446 .width = 129, 1447 .height = 171, 1448 }, 1449 }; 1450 1451 static const struct drm_display_mode lg_lp097qx1_spa1_mode = { 1452 .clock = 205210, 1453 .hdisplay = 2048, 1454 .hsync_start = 2048 + 150, 1455 .hsync_end = 2048 + 150 + 5, 1456 .htotal = 2048 + 150 + 5 + 5, 1457 .vdisplay = 1536, 1458 .vsync_start = 1536 + 3, 1459 .vsync_end = 1536 + 3 + 1, 1460 .vtotal = 1536 + 3 + 1 + 9, 1461 }; 1462 1463 static const struct panel_desc lg_lp097qx1_spa1 = { 1464 .modes = &lg_lp097qx1_spa1_mode, 1465 .num_modes = 1, 1466 .size = { 1467 .width = 208, 1468 .height = 147, 1469 }, 1470 }; 1471 1472 static const struct drm_display_mode lg_lp120up1_mode = { 1473 .clock = 162300, 1474 .hdisplay = 1920, 1475 .hsync_start = 1920 + 40, 1476 .hsync_end = 1920 + 40 + 40, 1477 .htotal = 1920 + 40 + 40 + 80, 1478 .vdisplay = 1280, 1479 .vsync_start = 1280 + 4, 1480 .vsync_end = 1280 + 4 + 4, 1481 .vtotal = 1280 + 4 + 4 + 12, 1482 }; 1483 1484 static const struct panel_desc lg_lp120up1 = { 1485 .modes = &lg_lp120up1_mode, 1486 .num_modes = 1, 1487 .bpc = 8, 1488 .size = { 1489 .width = 267, 1490 .height = 183, 1491 }, 1492 }; 1493 1494 static const struct drm_display_mode lg_lp129qe_mode = { 1495 .clock = 285250, 1496 .hdisplay = 2560, 1497 .hsync_start = 2560 + 48, 1498 .hsync_end = 2560 + 48 + 32, 1499 .htotal = 2560 + 48 + 32 + 80, 1500 .vdisplay = 1700, 1501 .vsync_start = 1700 + 3, 1502 .vsync_end = 1700 + 3 + 10, 1503 .vtotal = 1700 + 3 + 10 + 36, 1504 }; 1505 1506 static const struct panel_desc lg_lp129qe = { 1507 .modes = &lg_lp129qe_mode, 1508 .num_modes = 1, 1509 .bpc = 8, 1510 .size = { 1511 .width = 272, 1512 .height = 181, 1513 }, 1514 }; 1515 1516 static const struct drm_display_mode neweast_wjfh116008a_modes[] = { 1517 { 1518 .clock = 138500, 1519 .hdisplay = 1920, 1520 .hsync_start = 1920 + 48, 1521 .hsync_end = 1920 + 48 + 32, 1522 .htotal = 1920 + 48 + 32 + 80, 1523 .vdisplay = 1080, 1524 .vsync_start = 1080 + 3, 1525 .vsync_end = 1080 + 3 + 5, 1526 .vtotal = 1080 + 3 + 5 + 23, 1527 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1528 }, { 1529 .clock = 110920, 1530 .hdisplay = 1920, 1531 .hsync_start = 1920 + 48, 1532 .hsync_end = 1920 + 48 + 32, 1533 .htotal = 1920 + 48 + 32 + 80, 1534 .vdisplay = 1080, 1535 .vsync_start = 1080 + 3, 1536 .vsync_end = 1080 + 3 + 5, 1537 .vtotal = 1080 + 3 + 5 + 23, 1538 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1539 } 1540 }; 1541 1542 static const struct panel_desc neweast_wjfh116008a = { 1543 .modes = neweast_wjfh116008a_modes, 1544 .num_modes = 2, 1545 .bpc = 6, 1546 .size = { 1547 .width = 260, 1548 .height = 150, 1549 }, 1550 .delay = { 1551 .hpd_reliable = 110, 1552 .enable = 20, 1553 .unprepare = 500, 1554 }, 1555 }; 1556 1557 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = { 1558 .clock = 271560, 1559 .hdisplay = 2560, 1560 .hsync_start = 2560 + 48, 1561 .hsync_end = 2560 + 48 + 32, 1562 .htotal = 2560 + 48 + 32 + 80, 1563 .vdisplay = 1600, 1564 .vsync_start = 1600 + 2, 1565 .vsync_end = 1600 + 2 + 5, 1566 .vtotal = 1600 + 2 + 5 + 57, 1567 }; 1568 1569 static const struct panel_desc samsung_lsn122dl01_c01 = { 1570 .modes = &samsung_lsn122dl01_c01_mode, 1571 .num_modes = 1, 1572 .size = { 1573 .width = 263, 1574 .height = 164, 1575 }, 1576 }; 1577 1578 static const struct drm_display_mode samsung_ltn140at29_301_mode = { 1579 .clock = 76300, 1580 .hdisplay = 1366, 1581 .hsync_start = 1366 + 64, 1582 .hsync_end = 1366 + 64 + 48, 1583 .htotal = 1366 + 64 + 48 + 128, 1584 .vdisplay = 768, 1585 .vsync_start = 768 + 2, 1586 .vsync_end = 768 + 2 + 5, 1587 .vtotal = 768 + 2 + 5 + 17, 1588 }; 1589 1590 static const struct panel_desc samsung_ltn140at29_301 = { 1591 .modes = &samsung_ltn140at29_301_mode, 1592 .num_modes = 1, 1593 .bpc = 6, 1594 .size = { 1595 .width = 320, 1596 .height = 187, 1597 }, 1598 }; 1599 1600 static const struct drm_display_mode sharp_ld_d5116z01b_mode = { 1601 .clock = 168480, 1602 .hdisplay = 1920, 1603 .hsync_start = 1920 + 48, 1604 .hsync_end = 1920 + 48 + 32, 1605 .htotal = 1920 + 48 + 32 + 80, 1606 .vdisplay = 1280, 1607 .vsync_start = 1280 + 3, 1608 .vsync_end = 1280 + 3 + 10, 1609 .vtotal = 1280 + 3 + 10 + 57, 1610 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1611 }; 1612 1613 static const struct panel_desc sharp_ld_d5116z01b = { 1614 .modes = &sharp_ld_d5116z01b_mode, 1615 .num_modes = 1, 1616 .bpc = 8, 1617 .size = { 1618 .width = 260, 1619 .height = 120, 1620 }, 1621 }; 1622 1623 static const struct display_timing sharp_lq123p1jx31_timing = { 1624 .pixelclock = { 252750000, 252750000, 266604720 }, 1625 .hactive = { 2400, 2400, 2400 }, 1626 .hfront_porch = { 48, 48, 48 }, 1627 .hback_porch = { 80, 80, 84 }, 1628 .hsync_len = { 32, 32, 32 }, 1629 .vactive = { 1600, 1600, 1600 }, 1630 .vfront_porch = { 3, 3, 3 }, 1631 .vback_porch = { 33, 33, 120 }, 1632 .vsync_len = { 10, 10, 10 }, 1633 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1634 }; 1635 1636 static const struct panel_desc sharp_lq123p1jx31 = { 1637 .timings = &sharp_lq123p1jx31_timing, 1638 .num_timings = 1, 1639 .bpc = 8, 1640 .size = { 1641 .width = 259, 1642 .height = 173, 1643 }, 1644 .delay = { 1645 .hpd_reliable = 110, 1646 .enable = 50, 1647 .unprepare = 550, 1648 }, 1649 }; 1650 1651 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = { 1652 { 1653 .clock = 346500, 1654 .hdisplay = 1920, 1655 .hsync_start = 1920 + 48, 1656 .hsync_end = 1920 + 48 + 32, 1657 .htotal = 1920 + 48 + 32 + 80, 1658 .vdisplay = 1080, 1659 .vsync_start = 1080 + 3, 1660 .vsync_end = 1080 + 3 + 5, 1661 .vtotal = 1080 + 3 + 5 + 69, 1662 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1663 }, { 1664 .clock = 144370, 1665 .hdisplay = 1920, 1666 .hsync_start = 1920 + 48, 1667 .hsync_end = 1920 + 48 + 32, 1668 .htotal = 1920 + 48 + 32 + 80, 1669 .vdisplay = 1080, 1670 .vsync_start = 1080 + 3, 1671 .vsync_end = 1080 + 3 + 5, 1672 .vtotal = 1080 + 3 + 5 + 69, 1673 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1674 }, 1675 }; 1676 1677 static const struct panel_desc sharp_lq140m1jw46 = { 1678 .modes = sharp_lq140m1jw46_mode, 1679 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode), 1680 .bpc = 8, 1681 .size = { 1682 .width = 309, 1683 .height = 174, 1684 }, 1685 .delay = { 1686 .hpd_absent = 80, 1687 .enable = 50, 1688 .unprepare = 500, 1689 }, 1690 }; 1691 1692 static const struct drm_display_mode starry_kr122ea0sra_mode = { 1693 .clock = 147000, 1694 .hdisplay = 1920, 1695 .hsync_start = 1920 + 16, 1696 .hsync_end = 1920 + 16 + 16, 1697 .htotal = 1920 + 16 + 16 + 32, 1698 .vdisplay = 1200, 1699 .vsync_start = 1200 + 15, 1700 .vsync_end = 1200 + 15 + 2, 1701 .vtotal = 1200 + 15 + 2 + 18, 1702 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1703 }; 1704 1705 static const struct panel_desc starry_kr122ea0sra = { 1706 .modes = &starry_kr122ea0sra_mode, 1707 .num_modes = 1, 1708 .size = { 1709 .width = 263, 1710 .height = 164, 1711 }, 1712 .delay = { 1713 /* TODO: should be hpd-absent and no-hpd should be set? */ 1714 .hpd_reliable = 10 + 200, 1715 .enable = 50, 1716 .unprepare = 10 + 500, 1717 }, 1718 }; 1719 1720 static const struct of_device_id platform_of_match[] = { 1721 { 1722 /* Must be first */ 1723 .compatible = "edp-panel", 1724 }, { 1725 .compatible = "auo,b101ean01", 1726 .data = &auo_b101ean01, 1727 }, { 1728 .compatible = "auo,b116xa01", 1729 .data = &auo_b116xak01, 1730 }, { 1731 .compatible = "auo,b116xw03", 1732 .data = &auo_b116xw03, 1733 }, { 1734 .compatible = "auo,b133han05", 1735 .data = &auo_b133han05, 1736 }, { 1737 .compatible = "auo,b133htn01", 1738 .data = &auo_b133htn01, 1739 }, { 1740 .compatible = "auo,b133xtn01", 1741 .data = &auo_b133xtn01, 1742 }, { 1743 .compatible = "auo,b140han06", 1744 .data = &auo_b140han06, 1745 }, { 1746 .compatible = "boe,nv101wxmn51", 1747 .data = &boe_nv101wxmn51, 1748 }, { 1749 .compatible = "boe,nv110wtm-n61", 1750 .data = &boe_nv110wtm_n61, 1751 }, { 1752 .compatible = "boe,nv133fhm-n61", 1753 .data = &boe_nv133fhm_n61, 1754 }, { 1755 .compatible = "boe,nv133fhm-n62", 1756 .data = &boe_nv133fhm_n61, 1757 }, { 1758 .compatible = "boe,nv140fhmn49", 1759 .data = &boe_nv140fhmn49, 1760 }, { 1761 .compatible = "innolux,n116bca-ea1", 1762 .data = &innolux_n116bca_ea1, 1763 }, { 1764 .compatible = "innolux,n116bge", 1765 .data = &innolux_n116bge, 1766 }, { 1767 .compatible = "innolux,n125hce-gn1", 1768 .data = &innolux_n125hce_gn1, 1769 }, { 1770 .compatible = "innolux,p120zdg-bf1", 1771 .data = &innolux_p120zdg_bf1, 1772 }, { 1773 .compatible = "ivo,m133nwf4-r0", 1774 .data = &ivo_m133nwf4_r0, 1775 }, { 1776 .compatible = "kingdisplay,kd116n21-30nv-a010", 1777 .data = &kingdisplay_kd116n21_30nv_a010, 1778 }, { 1779 .compatible = "lg,lp079qx1-sp0v", 1780 .data = &lg_lp079qx1_sp0v, 1781 }, { 1782 .compatible = "lg,lp097qx1-spa1", 1783 .data = &lg_lp097qx1_spa1, 1784 }, { 1785 .compatible = "lg,lp120up1", 1786 .data = &lg_lp120up1, 1787 }, { 1788 .compatible = "lg,lp129qe", 1789 .data = &lg_lp129qe, 1790 }, { 1791 .compatible = "neweast,wjfh116008a", 1792 .data = &neweast_wjfh116008a, 1793 }, { 1794 .compatible = "samsung,lsn122dl01-c01", 1795 .data = &samsung_lsn122dl01_c01, 1796 }, { 1797 .compatible = "samsung,ltn140at29-301", 1798 .data = &samsung_ltn140at29_301, 1799 }, { 1800 .compatible = "sharp,ld-d5116z01b", 1801 .data = &sharp_ld_d5116z01b, 1802 }, { 1803 .compatible = "sharp,lq123p1jx31", 1804 .data = &sharp_lq123p1jx31, 1805 }, { 1806 .compatible = "sharp,lq140m1jw46", 1807 .data = &sharp_lq140m1jw46, 1808 }, { 1809 .compatible = "starry,kr122ea0sra", 1810 .data = &starry_kr122ea0sra, 1811 }, { 1812 /* sentinel */ 1813 } 1814 }; 1815 MODULE_DEVICE_TABLE(of, platform_of_match); 1816 1817 static const struct panel_delay delay_200_500_p2e80 = { 1818 .hpd_absent = 200, 1819 .unprepare = 500, 1820 .prepare_to_enable = 80, 1821 }; 1822 1823 static const struct panel_delay delay_200_500_p2e100 = { 1824 .hpd_absent = 200, 1825 .unprepare = 500, 1826 .prepare_to_enable = 100, 1827 }; 1828 1829 static const struct panel_delay delay_200_500_e50 = { 1830 .hpd_absent = 200, 1831 .unprepare = 500, 1832 .enable = 50, 1833 }; 1834 1835 static const struct panel_delay delay_200_500_e80_d50 = { 1836 .hpd_absent = 200, 1837 .unprepare = 500, 1838 .enable = 80, 1839 .disable = 50, 1840 }; 1841 1842 static const struct panel_delay delay_100_500_e200 = { 1843 .hpd_absent = 100, 1844 .unprepare = 500, 1845 .enable = 200, 1846 }; 1847 1848 static const struct panel_delay delay_200_500_e200 = { 1849 .hpd_absent = 200, 1850 .unprepare = 500, 1851 .enable = 200, 1852 }; 1853 1854 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \ 1855 { \ 1856 .name = _name, \ 1857 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1858 product_id), \ 1859 .delay = _delay \ 1860 } 1861 1862 /* 1863 * This table is used to figure out power sequencing delays for panels that 1864 * are detected by EDID. Entries here may point to entries in the 1865 * platform_of_match table (if a panel is listed in both places). 1866 * 1867 * Sort first by vendor, then by product ID. 1868 */ 1869 static const struct edp_panel_entry edp_panels[] = { 1870 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), 1871 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), 1872 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"), 1873 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01"), 1874 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"), 1875 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"), 1876 1877 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"), 1878 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"), 1879 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"), 1880 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"), 1881 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"), 1882 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"), 1883 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"), 1884 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"), 1885 1886 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"), 1887 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), 1888 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"), 1889 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"), 1890 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"), 1891 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"), 1892 1893 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), 1894 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "M133NW4J-R3"), 1895 1896 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), 1897 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), 1898 1899 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"), 1900 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"), 1901 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"), 1902 1903 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"), 1904 1905 { /* sentinal */ } 1906 }; 1907 1908 static const struct edp_panel_entry *find_edp_panel(u32 panel_id) 1909 { 1910 const struct edp_panel_entry *panel; 1911 1912 if (!panel_id) 1913 return NULL; 1914 1915 for (panel = edp_panels; panel->panel_id; panel++) 1916 if (panel->panel_id == panel_id) 1917 return panel; 1918 1919 return NULL; 1920 } 1921 1922 static int panel_edp_platform_probe(struct platform_device *pdev) 1923 { 1924 const struct of_device_id *id; 1925 1926 /* Skip one since "edp-panel" is only supported on DP AUX bus */ 1927 id = of_match_node(platform_of_match + 1, pdev->dev.of_node); 1928 if (!id) 1929 return -ENODEV; 1930 1931 return panel_edp_probe(&pdev->dev, id->data, NULL); 1932 } 1933 1934 static int panel_edp_platform_remove(struct platform_device *pdev) 1935 { 1936 return panel_edp_remove(&pdev->dev); 1937 } 1938 1939 static void panel_edp_platform_shutdown(struct platform_device *pdev) 1940 { 1941 panel_edp_shutdown(&pdev->dev); 1942 } 1943 1944 static const struct dev_pm_ops panel_edp_pm_ops = { 1945 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL) 1946 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1947 pm_runtime_force_resume) 1948 }; 1949 1950 static struct platform_driver panel_edp_platform_driver = { 1951 .driver = { 1952 .name = "panel-edp", 1953 .of_match_table = platform_of_match, 1954 .pm = &panel_edp_pm_ops, 1955 }, 1956 .probe = panel_edp_platform_probe, 1957 .remove = panel_edp_platform_remove, 1958 .shutdown = panel_edp_platform_shutdown, 1959 }; 1960 1961 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep) 1962 { 1963 const struct of_device_id *id; 1964 1965 id = of_match_node(platform_of_match, aux_ep->dev.of_node); 1966 if (!id) 1967 return -ENODEV; 1968 1969 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux); 1970 } 1971 1972 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep) 1973 { 1974 panel_edp_remove(&aux_ep->dev); 1975 } 1976 1977 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep) 1978 { 1979 panel_edp_shutdown(&aux_ep->dev); 1980 } 1981 1982 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = { 1983 .driver = { 1984 .name = "panel-simple-dp-aux", 1985 .of_match_table = platform_of_match, /* Same as platform one! */ 1986 .pm = &panel_edp_pm_ops, 1987 }, 1988 .probe = panel_edp_dp_aux_ep_probe, 1989 .remove = panel_edp_dp_aux_ep_remove, 1990 .shutdown = panel_edp_dp_aux_ep_shutdown, 1991 }; 1992 1993 static int __init panel_edp_init(void) 1994 { 1995 int err; 1996 1997 err = platform_driver_register(&panel_edp_platform_driver); 1998 if (err < 0) 1999 return err; 2000 2001 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver); 2002 if (err < 0) 2003 goto err_did_platform_register; 2004 2005 return 0; 2006 2007 err_did_platform_register: 2008 platform_driver_unregister(&panel_edp_platform_driver); 2009 2010 return err; 2011 } 2012 module_init(panel_edp_init); 2013 2014 static void __exit panel_edp_exit(void) 2015 { 2016 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver); 2017 platform_driver_unregister(&panel_edp_platform_driver); 2018 } 2019 module_exit(panel_edp_exit); 2020 2021 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 2022 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels"); 2023 MODULE_LICENSE("GPL and additional rights"); 2024