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_boottime(); 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_boottime(); 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_boottime(); 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_boottime(); 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 void 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 } 922 923 static void panel_edp_shutdown(struct device *dev) 924 { 925 struct panel_edp *panel = dev_get_drvdata(dev); 926 927 drm_panel_disable(&panel->base); 928 drm_panel_unprepare(&panel->base); 929 } 930 931 static const struct display_timing auo_b101ean01_timing = { 932 .pixelclock = { 65300000, 72500000, 75000000 }, 933 .hactive = { 1280, 1280, 1280 }, 934 .hfront_porch = { 18, 119, 119 }, 935 .hback_porch = { 21, 21, 21 }, 936 .hsync_len = { 32, 32, 32 }, 937 .vactive = { 800, 800, 800 }, 938 .vfront_porch = { 4, 4, 4 }, 939 .vback_porch = { 8, 8, 8 }, 940 .vsync_len = { 18, 20, 20 }, 941 }; 942 943 static const struct panel_desc auo_b101ean01 = { 944 .timings = &auo_b101ean01_timing, 945 .num_timings = 1, 946 .bpc = 6, 947 .size = { 948 .width = 217, 949 .height = 136, 950 }, 951 }; 952 953 static const struct drm_display_mode auo_b116xak01_mode = { 954 .clock = 69300, 955 .hdisplay = 1366, 956 .hsync_start = 1366 + 48, 957 .hsync_end = 1366 + 48 + 32, 958 .htotal = 1366 + 48 + 32 + 10, 959 .vdisplay = 768, 960 .vsync_start = 768 + 4, 961 .vsync_end = 768 + 4 + 6, 962 .vtotal = 768 + 4 + 6 + 15, 963 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 964 }; 965 966 static const struct panel_desc auo_b116xak01 = { 967 .modes = &auo_b116xak01_mode, 968 .num_modes = 1, 969 .bpc = 6, 970 .size = { 971 .width = 256, 972 .height = 144, 973 }, 974 .delay = { 975 .hpd_absent = 200, 976 .unprepare = 500, 977 .enable = 50, 978 }, 979 }; 980 981 static const struct drm_display_mode auo_b133han05_mode = { 982 .clock = 142600, 983 .hdisplay = 1920, 984 .hsync_start = 1920 + 58, 985 .hsync_end = 1920 + 58 + 42, 986 .htotal = 1920 + 58 + 42 + 60, 987 .vdisplay = 1080, 988 .vsync_start = 1080 + 3, 989 .vsync_end = 1080 + 3 + 5, 990 .vtotal = 1080 + 3 + 5 + 54, 991 }; 992 993 static const struct panel_desc auo_b133han05 = { 994 .modes = &auo_b133han05_mode, 995 .num_modes = 1, 996 .bpc = 8, 997 .size = { 998 .width = 293, 999 .height = 165, 1000 }, 1001 .delay = { 1002 .hpd_reliable = 100, 1003 .enable = 20, 1004 .unprepare = 50, 1005 }, 1006 }; 1007 1008 static const struct drm_display_mode auo_b133htn01_mode = { 1009 .clock = 150660, 1010 .hdisplay = 1920, 1011 .hsync_start = 1920 + 172, 1012 .hsync_end = 1920 + 172 + 80, 1013 .htotal = 1920 + 172 + 80 + 60, 1014 .vdisplay = 1080, 1015 .vsync_start = 1080 + 25, 1016 .vsync_end = 1080 + 25 + 10, 1017 .vtotal = 1080 + 25 + 10 + 10, 1018 }; 1019 1020 static const struct panel_desc auo_b133htn01 = { 1021 .modes = &auo_b133htn01_mode, 1022 .num_modes = 1, 1023 .bpc = 6, 1024 .size = { 1025 .width = 293, 1026 .height = 165, 1027 }, 1028 .delay = { 1029 .hpd_reliable = 105, 1030 .enable = 20, 1031 .unprepare = 50, 1032 }, 1033 }; 1034 1035 static const struct drm_display_mode auo_b133xtn01_mode = { 1036 .clock = 69500, 1037 .hdisplay = 1366, 1038 .hsync_start = 1366 + 48, 1039 .hsync_end = 1366 + 48 + 32, 1040 .htotal = 1366 + 48 + 32 + 20, 1041 .vdisplay = 768, 1042 .vsync_start = 768 + 3, 1043 .vsync_end = 768 + 3 + 6, 1044 .vtotal = 768 + 3 + 6 + 13, 1045 }; 1046 1047 static const struct panel_desc auo_b133xtn01 = { 1048 .modes = &auo_b133xtn01_mode, 1049 .num_modes = 1, 1050 .bpc = 6, 1051 .size = { 1052 .width = 293, 1053 .height = 165, 1054 }, 1055 }; 1056 1057 static const struct drm_display_mode auo_b140han06_mode = { 1058 .clock = 141000, 1059 .hdisplay = 1920, 1060 .hsync_start = 1920 + 16, 1061 .hsync_end = 1920 + 16 + 16, 1062 .htotal = 1920 + 16 + 16 + 152, 1063 .vdisplay = 1080, 1064 .vsync_start = 1080 + 3, 1065 .vsync_end = 1080 + 3 + 14, 1066 .vtotal = 1080 + 3 + 14 + 19, 1067 }; 1068 1069 static const struct panel_desc auo_b140han06 = { 1070 .modes = &auo_b140han06_mode, 1071 .num_modes = 1, 1072 .bpc = 8, 1073 .size = { 1074 .width = 309, 1075 .height = 174, 1076 }, 1077 .delay = { 1078 .hpd_reliable = 100, 1079 .enable = 20, 1080 .unprepare = 50, 1081 }, 1082 }; 1083 1084 static const struct drm_display_mode boe_nv101wxmn51_modes[] = { 1085 { 1086 .clock = 71900, 1087 .hdisplay = 1280, 1088 .hsync_start = 1280 + 48, 1089 .hsync_end = 1280 + 48 + 32, 1090 .htotal = 1280 + 48 + 32 + 80, 1091 .vdisplay = 800, 1092 .vsync_start = 800 + 3, 1093 .vsync_end = 800 + 3 + 5, 1094 .vtotal = 800 + 3 + 5 + 24, 1095 }, 1096 { 1097 .clock = 57500, 1098 .hdisplay = 1280, 1099 .hsync_start = 1280 + 48, 1100 .hsync_end = 1280 + 48 + 32, 1101 .htotal = 1280 + 48 + 32 + 80, 1102 .vdisplay = 800, 1103 .vsync_start = 800 + 3, 1104 .vsync_end = 800 + 3 + 5, 1105 .vtotal = 800 + 3 + 5 + 24, 1106 }, 1107 }; 1108 1109 static const struct panel_desc boe_nv101wxmn51 = { 1110 .modes = boe_nv101wxmn51_modes, 1111 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes), 1112 .bpc = 8, 1113 .size = { 1114 .width = 217, 1115 .height = 136, 1116 }, 1117 .delay = { 1118 /* TODO: should be hpd-absent and no-hpd should be set? */ 1119 .hpd_reliable = 210, 1120 .enable = 50, 1121 .unprepare = 160, 1122 }, 1123 }; 1124 1125 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = { 1126 { 1127 .clock = 207800, 1128 .hdisplay = 2160, 1129 .hsync_start = 2160 + 48, 1130 .hsync_end = 2160 + 48 + 32, 1131 .htotal = 2160 + 48 + 32 + 100, 1132 .vdisplay = 1440, 1133 .vsync_start = 1440 + 3, 1134 .vsync_end = 1440 + 3 + 6, 1135 .vtotal = 1440 + 3 + 6 + 31, 1136 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1137 }, 1138 { 1139 .clock = 138500, 1140 .hdisplay = 2160, 1141 .hsync_start = 2160 + 48, 1142 .hsync_end = 2160 + 48 + 32, 1143 .htotal = 2160 + 48 + 32 + 100, 1144 .vdisplay = 1440, 1145 .vsync_start = 1440 + 3, 1146 .vsync_end = 1440 + 3 + 6, 1147 .vtotal = 1440 + 3 + 6 + 31, 1148 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1149 }, 1150 }; 1151 1152 static const struct panel_desc boe_nv110wtm_n61 = { 1153 .modes = boe_nv110wtm_n61_modes, 1154 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes), 1155 .bpc = 8, 1156 .size = { 1157 .width = 233, 1158 .height = 155, 1159 }, 1160 .delay = { 1161 .hpd_absent = 200, 1162 .prepare_to_enable = 80, 1163 .enable = 50, 1164 .unprepare = 500, 1165 }, 1166 }; 1167 1168 /* Also used for boe_nv133fhm_n62 */ 1169 static const struct drm_display_mode boe_nv133fhm_n61_modes = { 1170 .clock = 147840, 1171 .hdisplay = 1920, 1172 .hsync_start = 1920 + 48, 1173 .hsync_end = 1920 + 48 + 32, 1174 .htotal = 1920 + 48 + 32 + 200, 1175 .vdisplay = 1080, 1176 .vsync_start = 1080 + 3, 1177 .vsync_end = 1080 + 3 + 6, 1178 .vtotal = 1080 + 3 + 6 + 31, 1179 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1180 }; 1181 1182 /* Also used for boe_nv133fhm_n62 */ 1183 static const struct panel_desc boe_nv133fhm_n61 = { 1184 .modes = &boe_nv133fhm_n61_modes, 1185 .num_modes = 1, 1186 .bpc = 6, 1187 .size = { 1188 .width = 294, 1189 .height = 165, 1190 }, 1191 .delay = { 1192 /* 1193 * When power is first given to the panel there's a short 1194 * spike on the HPD line. It was explained that this spike 1195 * was until the TCON data download was complete. On 1196 * one system this was measured at 8 ms. We'll put 15 ms 1197 * in the prepare delay just to be safe. That means: 1198 * - If HPD isn't hooked up you still have 200 ms delay. 1199 * - If HPD is hooked up we won't try to look at it for the 1200 * first 15 ms. 1201 */ 1202 .hpd_reliable = 15, 1203 .hpd_absent = 200, 1204 1205 .unprepare = 500, 1206 }, 1207 }; 1208 1209 static const struct drm_display_mode boe_nv140fhmn49_modes[] = { 1210 { 1211 .clock = 148500, 1212 .hdisplay = 1920, 1213 .hsync_start = 1920 + 48, 1214 .hsync_end = 1920 + 48 + 32, 1215 .htotal = 2200, 1216 .vdisplay = 1080, 1217 .vsync_start = 1080 + 3, 1218 .vsync_end = 1080 + 3 + 5, 1219 .vtotal = 1125, 1220 }, 1221 }; 1222 1223 static const struct panel_desc boe_nv140fhmn49 = { 1224 .modes = boe_nv140fhmn49_modes, 1225 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes), 1226 .bpc = 6, 1227 .size = { 1228 .width = 309, 1229 .height = 174, 1230 }, 1231 .delay = { 1232 /* TODO: should be hpd-absent and no-hpd should be set? */ 1233 .hpd_reliable = 210, 1234 .enable = 50, 1235 .unprepare = 160, 1236 }, 1237 }; 1238 1239 static const struct drm_display_mode innolux_n116bca_ea1_mode = { 1240 .clock = 76420, 1241 .hdisplay = 1366, 1242 .hsync_start = 1366 + 136, 1243 .hsync_end = 1366 + 136 + 30, 1244 .htotal = 1366 + 136 + 30 + 60, 1245 .vdisplay = 768, 1246 .vsync_start = 768 + 8, 1247 .vsync_end = 768 + 8 + 12, 1248 .vtotal = 768 + 8 + 12 + 12, 1249 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1250 }; 1251 1252 static const struct panel_desc innolux_n116bca_ea1 = { 1253 .modes = &innolux_n116bca_ea1_mode, 1254 .num_modes = 1, 1255 .bpc = 6, 1256 .size = { 1257 .width = 256, 1258 .height = 144, 1259 }, 1260 .delay = { 1261 .hpd_absent = 200, 1262 .enable = 80, 1263 .disable = 50, 1264 .unprepare = 500, 1265 }, 1266 }; 1267 1268 /* 1269 * Datasheet specifies that at 60 Hz refresh rate: 1270 * - total horizontal time: { 1506, 1592, 1716 } 1271 * - total vertical time: { 788, 800, 868 } 1272 * 1273 * ...but doesn't go into exactly how that should be split into a front 1274 * porch, back porch, or sync length. For now we'll leave a single setting 1275 * here which allows a bit of tweaking of the pixel clock at the expense of 1276 * refresh rate. 1277 */ 1278 static const struct display_timing innolux_n116bge_timing = { 1279 .pixelclock = { 72600000, 76420000, 80240000 }, 1280 .hactive = { 1366, 1366, 1366 }, 1281 .hfront_porch = { 136, 136, 136 }, 1282 .hback_porch = { 60, 60, 60 }, 1283 .hsync_len = { 30, 30, 30 }, 1284 .vactive = { 768, 768, 768 }, 1285 .vfront_porch = { 8, 8, 8 }, 1286 .vback_porch = { 12, 12, 12 }, 1287 .vsync_len = { 12, 12, 12 }, 1288 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1289 }; 1290 1291 static const struct panel_desc innolux_n116bge = { 1292 .timings = &innolux_n116bge_timing, 1293 .num_timings = 1, 1294 .bpc = 6, 1295 .size = { 1296 .width = 256, 1297 .height = 144, 1298 }, 1299 }; 1300 1301 static const struct drm_display_mode innolux_n125hce_gn1_mode = { 1302 .clock = 162000, 1303 .hdisplay = 1920, 1304 .hsync_start = 1920 + 40, 1305 .hsync_end = 1920 + 40 + 40, 1306 .htotal = 1920 + 40 + 40 + 80, 1307 .vdisplay = 1080, 1308 .vsync_start = 1080 + 4, 1309 .vsync_end = 1080 + 4 + 4, 1310 .vtotal = 1080 + 4 + 4 + 24, 1311 }; 1312 1313 static const struct panel_desc innolux_n125hce_gn1 = { 1314 .modes = &innolux_n125hce_gn1_mode, 1315 .num_modes = 1, 1316 .bpc = 8, 1317 .size = { 1318 .width = 276, 1319 .height = 155, 1320 }, 1321 }; 1322 1323 static const struct drm_display_mode innolux_p120zdg_bf1_mode = { 1324 .clock = 206016, 1325 .hdisplay = 2160, 1326 .hsync_start = 2160 + 48, 1327 .hsync_end = 2160 + 48 + 32, 1328 .htotal = 2160 + 48 + 32 + 80, 1329 .vdisplay = 1440, 1330 .vsync_start = 1440 + 3, 1331 .vsync_end = 1440 + 3 + 10, 1332 .vtotal = 1440 + 3 + 10 + 27, 1333 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1334 }; 1335 1336 static const struct panel_desc innolux_p120zdg_bf1 = { 1337 .modes = &innolux_p120zdg_bf1_mode, 1338 .num_modes = 1, 1339 .bpc = 8, 1340 .size = { 1341 .width = 254, 1342 .height = 169, 1343 }, 1344 .delay = { 1345 .hpd_absent = 200, 1346 .unprepare = 500, 1347 }, 1348 }; 1349 1350 static const struct drm_display_mode ivo_m133nwf4_r0_mode = { 1351 .clock = 138778, 1352 .hdisplay = 1920, 1353 .hsync_start = 1920 + 24, 1354 .hsync_end = 1920 + 24 + 48, 1355 .htotal = 1920 + 24 + 48 + 88, 1356 .vdisplay = 1080, 1357 .vsync_start = 1080 + 3, 1358 .vsync_end = 1080 + 3 + 12, 1359 .vtotal = 1080 + 3 + 12 + 17, 1360 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1361 }; 1362 1363 static const struct panel_desc ivo_m133nwf4_r0 = { 1364 .modes = &ivo_m133nwf4_r0_mode, 1365 .num_modes = 1, 1366 .bpc = 8, 1367 .size = { 1368 .width = 294, 1369 .height = 165, 1370 }, 1371 .delay = { 1372 .hpd_absent = 200, 1373 .unprepare = 500, 1374 }, 1375 }; 1376 1377 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = { 1378 .clock = 81000, 1379 .hdisplay = 1366, 1380 .hsync_start = 1366 + 40, 1381 .hsync_end = 1366 + 40 + 32, 1382 .htotal = 1366 + 40 + 32 + 62, 1383 .vdisplay = 768, 1384 .vsync_start = 768 + 5, 1385 .vsync_end = 768 + 5 + 5, 1386 .vtotal = 768 + 5 + 5 + 122, 1387 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1388 }; 1389 1390 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = { 1391 .modes = &kingdisplay_kd116n21_30nv_a010_mode, 1392 .num_modes = 1, 1393 .bpc = 6, 1394 .size = { 1395 .width = 256, 1396 .height = 144, 1397 }, 1398 .delay = { 1399 .hpd_absent = 200, 1400 }, 1401 }; 1402 1403 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = { 1404 .clock = 200000, 1405 .hdisplay = 1536, 1406 .hsync_start = 1536 + 12, 1407 .hsync_end = 1536 + 12 + 16, 1408 .htotal = 1536 + 12 + 16 + 48, 1409 .vdisplay = 2048, 1410 .vsync_start = 2048 + 8, 1411 .vsync_end = 2048 + 8 + 4, 1412 .vtotal = 2048 + 8 + 4 + 8, 1413 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1414 }; 1415 1416 static const struct panel_desc lg_lp079qx1_sp0v = { 1417 .modes = &lg_lp079qx1_sp0v_mode, 1418 .num_modes = 1, 1419 .size = { 1420 .width = 129, 1421 .height = 171, 1422 }, 1423 }; 1424 1425 static const struct drm_display_mode lg_lp097qx1_spa1_mode = { 1426 .clock = 205210, 1427 .hdisplay = 2048, 1428 .hsync_start = 2048 + 150, 1429 .hsync_end = 2048 + 150 + 5, 1430 .htotal = 2048 + 150 + 5 + 5, 1431 .vdisplay = 1536, 1432 .vsync_start = 1536 + 3, 1433 .vsync_end = 1536 + 3 + 1, 1434 .vtotal = 1536 + 3 + 1 + 9, 1435 }; 1436 1437 static const struct panel_desc lg_lp097qx1_spa1 = { 1438 .modes = &lg_lp097qx1_spa1_mode, 1439 .num_modes = 1, 1440 .size = { 1441 .width = 208, 1442 .height = 147, 1443 }, 1444 }; 1445 1446 static const struct drm_display_mode lg_lp120up1_mode = { 1447 .clock = 162300, 1448 .hdisplay = 1920, 1449 .hsync_start = 1920 + 40, 1450 .hsync_end = 1920 + 40 + 40, 1451 .htotal = 1920 + 40 + 40 + 80, 1452 .vdisplay = 1280, 1453 .vsync_start = 1280 + 4, 1454 .vsync_end = 1280 + 4 + 4, 1455 .vtotal = 1280 + 4 + 4 + 12, 1456 }; 1457 1458 static const struct panel_desc lg_lp120up1 = { 1459 .modes = &lg_lp120up1_mode, 1460 .num_modes = 1, 1461 .bpc = 8, 1462 .size = { 1463 .width = 267, 1464 .height = 183, 1465 }, 1466 }; 1467 1468 static const struct drm_display_mode lg_lp129qe_mode = { 1469 .clock = 285250, 1470 .hdisplay = 2560, 1471 .hsync_start = 2560 + 48, 1472 .hsync_end = 2560 + 48 + 32, 1473 .htotal = 2560 + 48 + 32 + 80, 1474 .vdisplay = 1700, 1475 .vsync_start = 1700 + 3, 1476 .vsync_end = 1700 + 3 + 10, 1477 .vtotal = 1700 + 3 + 10 + 36, 1478 }; 1479 1480 static const struct panel_desc lg_lp129qe = { 1481 .modes = &lg_lp129qe_mode, 1482 .num_modes = 1, 1483 .bpc = 8, 1484 .size = { 1485 .width = 272, 1486 .height = 181, 1487 }, 1488 }; 1489 1490 static const struct drm_display_mode neweast_wjfh116008a_modes[] = { 1491 { 1492 .clock = 138500, 1493 .hdisplay = 1920, 1494 .hsync_start = 1920 + 48, 1495 .hsync_end = 1920 + 48 + 32, 1496 .htotal = 1920 + 48 + 32 + 80, 1497 .vdisplay = 1080, 1498 .vsync_start = 1080 + 3, 1499 .vsync_end = 1080 + 3 + 5, 1500 .vtotal = 1080 + 3 + 5 + 23, 1501 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1502 }, { 1503 .clock = 110920, 1504 .hdisplay = 1920, 1505 .hsync_start = 1920 + 48, 1506 .hsync_end = 1920 + 48 + 32, 1507 .htotal = 1920 + 48 + 32 + 80, 1508 .vdisplay = 1080, 1509 .vsync_start = 1080 + 3, 1510 .vsync_end = 1080 + 3 + 5, 1511 .vtotal = 1080 + 3 + 5 + 23, 1512 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1513 } 1514 }; 1515 1516 static const struct panel_desc neweast_wjfh116008a = { 1517 .modes = neweast_wjfh116008a_modes, 1518 .num_modes = 2, 1519 .bpc = 6, 1520 .size = { 1521 .width = 260, 1522 .height = 150, 1523 }, 1524 .delay = { 1525 .hpd_reliable = 110, 1526 .enable = 20, 1527 .unprepare = 500, 1528 }, 1529 }; 1530 1531 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = { 1532 .clock = 271560, 1533 .hdisplay = 2560, 1534 .hsync_start = 2560 + 48, 1535 .hsync_end = 2560 + 48 + 32, 1536 .htotal = 2560 + 48 + 32 + 80, 1537 .vdisplay = 1600, 1538 .vsync_start = 1600 + 2, 1539 .vsync_end = 1600 + 2 + 5, 1540 .vtotal = 1600 + 2 + 5 + 57, 1541 }; 1542 1543 static const struct panel_desc samsung_lsn122dl01_c01 = { 1544 .modes = &samsung_lsn122dl01_c01_mode, 1545 .num_modes = 1, 1546 .size = { 1547 .width = 263, 1548 .height = 164, 1549 }, 1550 }; 1551 1552 static const struct drm_display_mode samsung_ltn140at29_301_mode = { 1553 .clock = 76300, 1554 .hdisplay = 1366, 1555 .hsync_start = 1366 + 64, 1556 .hsync_end = 1366 + 64 + 48, 1557 .htotal = 1366 + 64 + 48 + 128, 1558 .vdisplay = 768, 1559 .vsync_start = 768 + 2, 1560 .vsync_end = 768 + 2 + 5, 1561 .vtotal = 768 + 2 + 5 + 17, 1562 }; 1563 1564 static const struct panel_desc samsung_ltn140at29_301 = { 1565 .modes = &samsung_ltn140at29_301_mode, 1566 .num_modes = 1, 1567 .bpc = 6, 1568 .size = { 1569 .width = 320, 1570 .height = 187, 1571 }, 1572 }; 1573 1574 static const struct drm_display_mode sharp_ld_d5116z01b_mode = { 1575 .clock = 168480, 1576 .hdisplay = 1920, 1577 .hsync_start = 1920 + 48, 1578 .hsync_end = 1920 + 48 + 32, 1579 .htotal = 1920 + 48 + 32 + 80, 1580 .vdisplay = 1280, 1581 .vsync_start = 1280 + 3, 1582 .vsync_end = 1280 + 3 + 10, 1583 .vtotal = 1280 + 3 + 10 + 57, 1584 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1585 }; 1586 1587 static const struct panel_desc sharp_ld_d5116z01b = { 1588 .modes = &sharp_ld_d5116z01b_mode, 1589 .num_modes = 1, 1590 .bpc = 8, 1591 .size = { 1592 .width = 260, 1593 .height = 120, 1594 }, 1595 }; 1596 1597 static const struct display_timing sharp_lq123p1jx31_timing = { 1598 .pixelclock = { 252750000, 252750000, 266604720 }, 1599 .hactive = { 2400, 2400, 2400 }, 1600 .hfront_porch = { 48, 48, 48 }, 1601 .hback_porch = { 80, 80, 84 }, 1602 .hsync_len = { 32, 32, 32 }, 1603 .vactive = { 1600, 1600, 1600 }, 1604 .vfront_porch = { 3, 3, 3 }, 1605 .vback_porch = { 33, 33, 120 }, 1606 .vsync_len = { 10, 10, 10 }, 1607 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1608 }; 1609 1610 static const struct panel_desc sharp_lq123p1jx31 = { 1611 .timings = &sharp_lq123p1jx31_timing, 1612 .num_timings = 1, 1613 .bpc = 8, 1614 .size = { 1615 .width = 259, 1616 .height = 173, 1617 }, 1618 .delay = { 1619 .hpd_reliable = 110, 1620 .enable = 50, 1621 .unprepare = 550, 1622 }, 1623 }; 1624 1625 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = { 1626 { 1627 .clock = 346500, 1628 .hdisplay = 1920, 1629 .hsync_start = 1920 + 48, 1630 .hsync_end = 1920 + 48 + 32, 1631 .htotal = 1920 + 48 + 32 + 80, 1632 .vdisplay = 1080, 1633 .vsync_start = 1080 + 3, 1634 .vsync_end = 1080 + 3 + 5, 1635 .vtotal = 1080 + 3 + 5 + 69, 1636 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1637 }, { 1638 .clock = 144370, 1639 .hdisplay = 1920, 1640 .hsync_start = 1920 + 48, 1641 .hsync_end = 1920 + 48 + 32, 1642 .htotal = 1920 + 48 + 32 + 80, 1643 .vdisplay = 1080, 1644 .vsync_start = 1080 + 3, 1645 .vsync_end = 1080 + 3 + 5, 1646 .vtotal = 1080 + 3 + 5 + 69, 1647 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1648 }, 1649 }; 1650 1651 static const struct panel_desc sharp_lq140m1jw46 = { 1652 .modes = sharp_lq140m1jw46_mode, 1653 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode), 1654 .bpc = 8, 1655 .size = { 1656 .width = 309, 1657 .height = 174, 1658 }, 1659 .delay = { 1660 .hpd_absent = 80, 1661 .enable = 50, 1662 .unprepare = 500, 1663 }, 1664 }; 1665 1666 static const struct drm_display_mode starry_kr122ea0sra_mode = { 1667 .clock = 147000, 1668 .hdisplay = 1920, 1669 .hsync_start = 1920 + 16, 1670 .hsync_end = 1920 + 16 + 16, 1671 .htotal = 1920 + 16 + 16 + 32, 1672 .vdisplay = 1200, 1673 .vsync_start = 1200 + 15, 1674 .vsync_end = 1200 + 15 + 2, 1675 .vtotal = 1200 + 15 + 2 + 18, 1676 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1677 }; 1678 1679 static const struct panel_desc starry_kr122ea0sra = { 1680 .modes = &starry_kr122ea0sra_mode, 1681 .num_modes = 1, 1682 .size = { 1683 .width = 263, 1684 .height = 164, 1685 }, 1686 .delay = { 1687 /* TODO: should be hpd-absent and no-hpd should be set? */ 1688 .hpd_reliable = 10 + 200, 1689 .enable = 50, 1690 .unprepare = 10 + 500, 1691 }, 1692 }; 1693 1694 static const struct of_device_id platform_of_match[] = { 1695 { 1696 /* Must be first */ 1697 .compatible = "edp-panel", 1698 }, { 1699 .compatible = "auo,b101ean01", 1700 .data = &auo_b101ean01, 1701 }, { 1702 .compatible = "auo,b116xa01", 1703 .data = &auo_b116xak01, 1704 }, { 1705 .compatible = "auo,b133han05", 1706 .data = &auo_b133han05, 1707 }, { 1708 .compatible = "auo,b133htn01", 1709 .data = &auo_b133htn01, 1710 }, { 1711 .compatible = "auo,b133xtn01", 1712 .data = &auo_b133xtn01, 1713 }, { 1714 .compatible = "auo,b140han06", 1715 .data = &auo_b140han06, 1716 }, { 1717 .compatible = "boe,nv101wxmn51", 1718 .data = &boe_nv101wxmn51, 1719 }, { 1720 .compatible = "boe,nv110wtm-n61", 1721 .data = &boe_nv110wtm_n61, 1722 }, { 1723 .compatible = "boe,nv133fhm-n61", 1724 .data = &boe_nv133fhm_n61, 1725 }, { 1726 .compatible = "boe,nv133fhm-n62", 1727 .data = &boe_nv133fhm_n61, 1728 }, { 1729 .compatible = "boe,nv140fhmn49", 1730 .data = &boe_nv140fhmn49, 1731 }, { 1732 .compatible = "innolux,n116bca-ea1", 1733 .data = &innolux_n116bca_ea1, 1734 }, { 1735 .compatible = "innolux,n116bge", 1736 .data = &innolux_n116bge, 1737 }, { 1738 .compatible = "innolux,n125hce-gn1", 1739 .data = &innolux_n125hce_gn1, 1740 }, { 1741 .compatible = "innolux,p120zdg-bf1", 1742 .data = &innolux_p120zdg_bf1, 1743 }, { 1744 .compatible = "ivo,m133nwf4-r0", 1745 .data = &ivo_m133nwf4_r0, 1746 }, { 1747 .compatible = "kingdisplay,kd116n21-30nv-a010", 1748 .data = &kingdisplay_kd116n21_30nv_a010, 1749 }, { 1750 .compatible = "lg,lp079qx1-sp0v", 1751 .data = &lg_lp079qx1_sp0v, 1752 }, { 1753 .compatible = "lg,lp097qx1-spa1", 1754 .data = &lg_lp097qx1_spa1, 1755 }, { 1756 .compatible = "lg,lp120up1", 1757 .data = &lg_lp120up1, 1758 }, { 1759 .compatible = "lg,lp129qe", 1760 .data = &lg_lp129qe, 1761 }, { 1762 .compatible = "neweast,wjfh116008a", 1763 .data = &neweast_wjfh116008a, 1764 }, { 1765 .compatible = "samsung,lsn122dl01-c01", 1766 .data = &samsung_lsn122dl01_c01, 1767 }, { 1768 .compatible = "samsung,ltn140at29-301", 1769 .data = &samsung_ltn140at29_301, 1770 }, { 1771 .compatible = "sharp,ld-d5116z01b", 1772 .data = &sharp_ld_d5116z01b, 1773 }, { 1774 .compatible = "sharp,lq123p1jx31", 1775 .data = &sharp_lq123p1jx31, 1776 }, { 1777 .compatible = "sharp,lq140m1jw46", 1778 .data = &sharp_lq140m1jw46, 1779 }, { 1780 .compatible = "starry,kr122ea0sra", 1781 .data = &starry_kr122ea0sra, 1782 }, { 1783 /* sentinel */ 1784 } 1785 }; 1786 MODULE_DEVICE_TABLE(of, platform_of_match); 1787 1788 static const struct panel_delay delay_200_500_p2e80 = { 1789 .hpd_absent = 200, 1790 .unprepare = 500, 1791 .prepare_to_enable = 80, 1792 }; 1793 1794 static const struct panel_delay delay_200_500_p2e100 = { 1795 .hpd_absent = 200, 1796 .unprepare = 500, 1797 .prepare_to_enable = 100, 1798 }; 1799 1800 static const struct panel_delay delay_200_500_e50 = { 1801 .hpd_absent = 200, 1802 .unprepare = 500, 1803 .enable = 50, 1804 }; 1805 1806 static const struct panel_delay delay_200_500_e80_d50 = { 1807 .hpd_absent = 200, 1808 .unprepare = 500, 1809 .enable = 80, 1810 .disable = 50, 1811 }; 1812 1813 static const struct panel_delay delay_100_500_e200 = { 1814 .hpd_absent = 100, 1815 .unprepare = 500, 1816 .enable = 200, 1817 }; 1818 1819 static const struct panel_delay delay_200_500_e200 = { 1820 .hpd_absent = 200, 1821 .unprepare = 500, 1822 .enable = 200, 1823 }; 1824 1825 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \ 1826 { \ 1827 .name = _name, \ 1828 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1829 product_id), \ 1830 .delay = _delay \ 1831 } 1832 1833 /* 1834 * This table is used to figure out power sequencing delays for panels that 1835 * are detected by EDID. Entries here may point to entries in the 1836 * platform_of_match table (if a panel is listed in both places). 1837 * 1838 * Sort first by vendor, then by product ID. 1839 */ 1840 static const struct edp_panel_entry edp_panels[] = { 1841 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), 1842 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"), 1843 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), 1844 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"), 1845 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"), 1846 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0"), 1847 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"), 1848 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"), 1849 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"), 1850 1851 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"), 1852 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"), 1853 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"), 1854 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"), 1855 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"), 1856 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"), 1857 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"), 1858 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"), 1859 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"), 1860 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"), 1861 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"), 1862 1863 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"), 1864 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), 1865 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"), 1866 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"), 1867 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"), 1868 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"), 1869 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"), 1870 1871 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), 1872 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"), 1873 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"), 1874 1875 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), 1876 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), 1877 1878 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"), 1879 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"), 1880 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"), 1881 1882 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"), 1883 1884 { /* sentinal */ } 1885 }; 1886 1887 static const struct edp_panel_entry *find_edp_panel(u32 panel_id) 1888 { 1889 const struct edp_panel_entry *panel; 1890 1891 if (!panel_id) 1892 return NULL; 1893 1894 for (panel = edp_panels; panel->panel_id; panel++) 1895 if (panel->panel_id == panel_id) 1896 return panel; 1897 1898 return NULL; 1899 } 1900 1901 static int panel_edp_platform_probe(struct platform_device *pdev) 1902 { 1903 const struct of_device_id *id; 1904 1905 /* Skip one since "edp-panel" is only supported on DP AUX bus */ 1906 id = of_match_node(platform_of_match + 1, pdev->dev.of_node); 1907 if (!id) 1908 return -ENODEV; 1909 1910 return panel_edp_probe(&pdev->dev, id->data, NULL); 1911 } 1912 1913 static void panel_edp_platform_remove(struct platform_device *pdev) 1914 { 1915 panel_edp_remove(&pdev->dev); 1916 } 1917 1918 static void panel_edp_platform_shutdown(struct platform_device *pdev) 1919 { 1920 panel_edp_shutdown(&pdev->dev); 1921 } 1922 1923 static const struct dev_pm_ops panel_edp_pm_ops = { 1924 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL) 1925 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1926 pm_runtime_force_resume) 1927 }; 1928 1929 static struct platform_driver panel_edp_platform_driver = { 1930 .driver = { 1931 .name = "panel-edp", 1932 .of_match_table = platform_of_match, 1933 .pm = &panel_edp_pm_ops, 1934 }, 1935 .probe = panel_edp_platform_probe, 1936 .remove_new = panel_edp_platform_remove, 1937 .shutdown = panel_edp_platform_shutdown, 1938 }; 1939 1940 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep) 1941 { 1942 const struct of_device_id *id; 1943 1944 id = of_match_node(platform_of_match, aux_ep->dev.of_node); 1945 if (!id) 1946 return -ENODEV; 1947 1948 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux); 1949 } 1950 1951 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep) 1952 { 1953 panel_edp_remove(&aux_ep->dev); 1954 } 1955 1956 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep) 1957 { 1958 panel_edp_shutdown(&aux_ep->dev); 1959 } 1960 1961 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = { 1962 .driver = { 1963 .name = "panel-simple-dp-aux", 1964 .of_match_table = platform_of_match, /* Same as platform one! */ 1965 .pm = &panel_edp_pm_ops, 1966 }, 1967 .probe = panel_edp_dp_aux_ep_probe, 1968 .remove = panel_edp_dp_aux_ep_remove, 1969 .shutdown = panel_edp_dp_aux_ep_shutdown, 1970 }; 1971 1972 static int __init panel_edp_init(void) 1973 { 1974 int err; 1975 1976 err = platform_driver_register(&panel_edp_platform_driver); 1977 if (err < 0) 1978 return err; 1979 1980 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver); 1981 if (err < 0) 1982 goto err_did_platform_register; 1983 1984 return 0; 1985 1986 err_did_platform_register: 1987 platform_driver_unregister(&panel_edp_platform_driver); 1988 1989 return err; 1990 } 1991 module_init(panel_edp_init); 1992 1993 static void __exit panel_edp_exit(void) 1994 { 1995 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver); 1996 platform_driver_unregister(&panel_edp_platform_driver); 1997 } 1998 module_exit(panel_edp_exit); 1999 2000 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 2001 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels"); 2002 MODULE_LICENSE("GPL and additional rights"); 2003