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 }, 977 }; 978 979 static const struct drm_display_mode auo_b116xw03_mode = { 980 .clock = 70589, 981 .hdisplay = 1366, 982 .hsync_start = 1366 + 40, 983 .hsync_end = 1366 + 40 + 40, 984 .htotal = 1366 + 40 + 40 + 32, 985 .vdisplay = 768, 986 .vsync_start = 768 + 10, 987 .vsync_end = 768 + 10 + 12, 988 .vtotal = 768 + 10 + 12 + 6, 989 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 990 }; 991 992 static const struct panel_desc auo_b116xw03 = { 993 .modes = &auo_b116xw03_mode, 994 .num_modes = 1, 995 .bpc = 6, 996 .size = { 997 .width = 256, 998 .height = 144, 999 }, 1000 .delay = { 1001 .enable = 400, 1002 }, 1003 }; 1004 1005 static const struct drm_display_mode auo_b133han05_mode = { 1006 .clock = 142600, 1007 .hdisplay = 1920, 1008 .hsync_start = 1920 + 58, 1009 .hsync_end = 1920 + 58 + 42, 1010 .htotal = 1920 + 58 + 42 + 60, 1011 .vdisplay = 1080, 1012 .vsync_start = 1080 + 3, 1013 .vsync_end = 1080 + 3 + 5, 1014 .vtotal = 1080 + 3 + 5 + 54, 1015 }; 1016 1017 static const struct panel_desc auo_b133han05 = { 1018 .modes = &auo_b133han05_mode, 1019 .num_modes = 1, 1020 .bpc = 8, 1021 .size = { 1022 .width = 293, 1023 .height = 165, 1024 }, 1025 .delay = { 1026 .hpd_reliable = 100, 1027 .enable = 20, 1028 .unprepare = 50, 1029 }, 1030 }; 1031 1032 static const struct drm_display_mode auo_b133htn01_mode = { 1033 .clock = 150660, 1034 .hdisplay = 1920, 1035 .hsync_start = 1920 + 172, 1036 .hsync_end = 1920 + 172 + 80, 1037 .htotal = 1920 + 172 + 80 + 60, 1038 .vdisplay = 1080, 1039 .vsync_start = 1080 + 25, 1040 .vsync_end = 1080 + 25 + 10, 1041 .vtotal = 1080 + 25 + 10 + 10, 1042 }; 1043 1044 static const struct panel_desc auo_b133htn01 = { 1045 .modes = &auo_b133htn01_mode, 1046 .num_modes = 1, 1047 .bpc = 6, 1048 .size = { 1049 .width = 293, 1050 .height = 165, 1051 }, 1052 .delay = { 1053 .hpd_reliable = 105, 1054 .enable = 20, 1055 .unprepare = 50, 1056 }, 1057 }; 1058 1059 static const struct drm_display_mode auo_b133xtn01_mode = { 1060 .clock = 69500, 1061 .hdisplay = 1366, 1062 .hsync_start = 1366 + 48, 1063 .hsync_end = 1366 + 48 + 32, 1064 .htotal = 1366 + 48 + 32 + 20, 1065 .vdisplay = 768, 1066 .vsync_start = 768 + 3, 1067 .vsync_end = 768 + 3 + 6, 1068 .vtotal = 768 + 3 + 6 + 13, 1069 }; 1070 1071 static const struct panel_desc auo_b133xtn01 = { 1072 .modes = &auo_b133xtn01_mode, 1073 .num_modes = 1, 1074 .bpc = 6, 1075 .size = { 1076 .width = 293, 1077 .height = 165, 1078 }, 1079 }; 1080 1081 static const struct drm_display_mode auo_b140han06_mode = { 1082 .clock = 141000, 1083 .hdisplay = 1920, 1084 .hsync_start = 1920 + 16, 1085 .hsync_end = 1920 + 16 + 16, 1086 .htotal = 1920 + 16 + 16 + 152, 1087 .vdisplay = 1080, 1088 .vsync_start = 1080 + 3, 1089 .vsync_end = 1080 + 3 + 14, 1090 .vtotal = 1080 + 3 + 14 + 19, 1091 }; 1092 1093 static const struct panel_desc auo_b140han06 = { 1094 .modes = &auo_b140han06_mode, 1095 .num_modes = 1, 1096 .bpc = 8, 1097 .size = { 1098 .width = 309, 1099 .height = 174, 1100 }, 1101 .delay = { 1102 .hpd_reliable = 100, 1103 .enable = 20, 1104 .unprepare = 50, 1105 }, 1106 }; 1107 1108 static const struct drm_display_mode boe_nv101wxmn51_modes[] = { 1109 { 1110 .clock = 71900, 1111 .hdisplay = 1280, 1112 .hsync_start = 1280 + 48, 1113 .hsync_end = 1280 + 48 + 32, 1114 .htotal = 1280 + 48 + 32 + 80, 1115 .vdisplay = 800, 1116 .vsync_start = 800 + 3, 1117 .vsync_end = 800 + 3 + 5, 1118 .vtotal = 800 + 3 + 5 + 24, 1119 }, 1120 { 1121 .clock = 57500, 1122 .hdisplay = 1280, 1123 .hsync_start = 1280 + 48, 1124 .hsync_end = 1280 + 48 + 32, 1125 .htotal = 1280 + 48 + 32 + 80, 1126 .vdisplay = 800, 1127 .vsync_start = 800 + 3, 1128 .vsync_end = 800 + 3 + 5, 1129 .vtotal = 800 + 3 + 5 + 24, 1130 }, 1131 }; 1132 1133 static const struct panel_desc boe_nv101wxmn51 = { 1134 .modes = boe_nv101wxmn51_modes, 1135 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes), 1136 .bpc = 8, 1137 .size = { 1138 .width = 217, 1139 .height = 136, 1140 }, 1141 .delay = { 1142 /* TODO: should be hpd-absent and no-hpd should be set? */ 1143 .hpd_reliable = 210, 1144 .enable = 50, 1145 .unprepare = 160, 1146 }, 1147 }; 1148 1149 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = { 1150 { 1151 .clock = 207800, 1152 .hdisplay = 2160, 1153 .hsync_start = 2160 + 48, 1154 .hsync_end = 2160 + 48 + 32, 1155 .htotal = 2160 + 48 + 32 + 100, 1156 .vdisplay = 1440, 1157 .vsync_start = 1440 + 3, 1158 .vsync_end = 1440 + 3 + 6, 1159 .vtotal = 1440 + 3 + 6 + 31, 1160 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1161 }, 1162 { 1163 .clock = 138500, 1164 .hdisplay = 2160, 1165 .hsync_start = 2160 + 48, 1166 .hsync_end = 2160 + 48 + 32, 1167 .htotal = 2160 + 48 + 32 + 100, 1168 .vdisplay = 1440, 1169 .vsync_start = 1440 + 3, 1170 .vsync_end = 1440 + 3 + 6, 1171 .vtotal = 1440 + 3 + 6 + 31, 1172 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1173 }, 1174 }; 1175 1176 static const struct panel_desc boe_nv110wtm_n61 = { 1177 .modes = boe_nv110wtm_n61_modes, 1178 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes), 1179 .bpc = 8, 1180 .size = { 1181 .width = 233, 1182 .height = 155, 1183 }, 1184 .delay = { 1185 .hpd_absent = 200, 1186 .prepare_to_enable = 80, 1187 .enable = 50, 1188 .unprepare = 500, 1189 }, 1190 }; 1191 1192 /* Also used for boe_nv133fhm_n62 */ 1193 static const struct drm_display_mode boe_nv133fhm_n61_modes = { 1194 .clock = 147840, 1195 .hdisplay = 1920, 1196 .hsync_start = 1920 + 48, 1197 .hsync_end = 1920 + 48 + 32, 1198 .htotal = 1920 + 48 + 32 + 200, 1199 .vdisplay = 1080, 1200 .vsync_start = 1080 + 3, 1201 .vsync_end = 1080 + 3 + 6, 1202 .vtotal = 1080 + 3 + 6 + 31, 1203 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1204 }; 1205 1206 /* Also used for boe_nv133fhm_n62 */ 1207 static const struct panel_desc boe_nv133fhm_n61 = { 1208 .modes = &boe_nv133fhm_n61_modes, 1209 .num_modes = 1, 1210 .bpc = 6, 1211 .size = { 1212 .width = 294, 1213 .height = 165, 1214 }, 1215 .delay = { 1216 /* 1217 * When power is first given to the panel there's a short 1218 * spike on the HPD line. It was explained that this spike 1219 * was until the TCON data download was complete. On 1220 * one system this was measured at 8 ms. We'll put 15 ms 1221 * in the prepare delay just to be safe. That means: 1222 * - If HPD isn't hooked up you still have 200 ms delay. 1223 * - If HPD is hooked up we won't try to look at it for the 1224 * first 15 ms. 1225 */ 1226 .hpd_reliable = 15, 1227 .hpd_absent = 200, 1228 1229 .unprepare = 500, 1230 }, 1231 }; 1232 1233 static const struct drm_display_mode boe_nv140fhmn49_modes[] = { 1234 { 1235 .clock = 148500, 1236 .hdisplay = 1920, 1237 .hsync_start = 1920 + 48, 1238 .hsync_end = 1920 + 48 + 32, 1239 .htotal = 2200, 1240 .vdisplay = 1080, 1241 .vsync_start = 1080 + 3, 1242 .vsync_end = 1080 + 3 + 5, 1243 .vtotal = 1125, 1244 }, 1245 }; 1246 1247 static const struct panel_desc boe_nv140fhmn49 = { 1248 .modes = boe_nv140fhmn49_modes, 1249 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes), 1250 .bpc = 6, 1251 .size = { 1252 .width = 309, 1253 .height = 174, 1254 }, 1255 .delay = { 1256 /* TODO: should be hpd-absent and no-hpd should be set? */ 1257 .hpd_reliable = 210, 1258 .enable = 50, 1259 .unprepare = 160, 1260 }, 1261 }; 1262 1263 static const struct drm_display_mode innolux_n116bca_ea1_mode = { 1264 .clock = 76420, 1265 .hdisplay = 1366, 1266 .hsync_start = 1366 + 136, 1267 .hsync_end = 1366 + 136 + 30, 1268 .htotal = 1366 + 136 + 30 + 60, 1269 .vdisplay = 768, 1270 .vsync_start = 768 + 8, 1271 .vsync_end = 768 + 8 + 12, 1272 .vtotal = 768 + 8 + 12 + 12, 1273 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1274 }; 1275 1276 static const struct panel_desc innolux_n116bca_ea1 = { 1277 .modes = &innolux_n116bca_ea1_mode, 1278 .num_modes = 1, 1279 .bpc = 6, 1280 .size = { 1281 .width = 256, 1282 .height = 144, 1283 }, 1284 .delay = { 1285 .hpd_absent = 200, 1286 .enable = 80, 1287 .disable = 50, 1288 .unprepare = 500, 1289 }, 1290 }; 1291 1292 /* 1293 * Datasheet specifies that at 60 Hz refresh rate: 1294 * - total horizontal time: { 1506, 1592, 1716 } 1295 * - total vertical time: { 788, 800, 868 } 1296 * 1297 * ...but doesn't go into exactly how that should be split into a front 1298 * porch, back porch, or sync length. For now we'll leave a single setting 1299 * here which allows a bit of tweaking of the pixel clock at the expense of 1300 * refresh rate. 1301 */ 1302 static const struct display_timing innolux_n116bge_timing = { 1303 .pixelclock = { 72600000, 76420000, 80240000 }, 1304 .hactive = { 1366, 1366, 1366 }, 1305 .hfront_porch = { 136, 136, 136 }, 1306 .hback_porch = { 60, 60, 60 }, 1307 .hsync_len = { 30, 30, 30 }, 1308 .vactive = { 768, 768, 768 }, 1309 .vfront_porch = { 8, 8, 8 }, 1310 .vback_porch = { 12, 12, 12 }, 1311 .vsync_len = { 12, 12, 12 }, 1312 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1313 }; 1314 1315 static const struct panel_desc innolux_n116bge = { 1316 .timings = &innolux_n116bge_timing, 1317 .num_timings = 1, 1318 .bpc = 6, 1319 .size = { 1320 .width = 256, 1321 .height = 144, 1322 }, 1323 }; 1324 1325 static const struct drm_display_mode innolux_n125hce_gn1_mode = { 1326 .clock = 162000, 1327 .hdisplay = 1920, 1328 .hsync_start = 1920 + 40, 1329 .hsync_end = 1920 + 40 + 40, 1330 .htotal = 1920 + 40 + 40 + 80, 1331 .vdisplay = 1080, 1332 .vsync_start = 1080 + 4, 1333 .vsync_end = 1080 + 4 + 4, 1334 .vtotal = 1080 + 4 + 4 + 24, 1335 }; 1336 1337 static const struct panel_desc innolux_n125hce_gn1 = { 1338 .modes = &innolux_n125hce_gn1_mode, 1339 .num_modes = 1, 1340 .bpc = 8, 1341 .size = { 1342 .width = 276, 1343 .height = 155, 1344 }, 1345 }; 1346 1347 static const struct drm_display_mode innolux_p120zdg_bf1_mode = { 1348 .clock = 206016, 1349 .hdisplay = 2160, 1350 .hsync_start = 2160 + 48, 1351 .hsync_end = 2160 + 48 + 32, 1352 .htotal = 2160 + 48 + 32 + 80, 1353 .vdisplay = 1440, 1354 .vsync_start = 1440 + 3, 1355 .vsync_end = 1440 + 3 + 10, 1356 .vtotal = 1440 + 3 + 10 + 27, 1357 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1358 }; 1359 1360 static const struct panel_desc innolux_p120zdg_bf1 = { 1361 .modes = &innolux_p120zdg_bf1_mode, 1362 .num_modes = 1, 1363 .bpc = 8, 1364 .size = { 1365 .width = 254, 1366 .height = 169, 1367 }, 1368 .delay = { 1369 .hpd_absent = 200, 1370 .unprepare = 500, 1371 }, 1372 }; 1373 1374 static const struct drm_display_mode ivo_m133nwf4_r0_mode = { 1375 .clock = 138778, 1376 .hdisplay = 1920, 1377 .hsync_start = 1920 + 24, 1378 .hsync_end = 1920 + 24 + 48, 1379 .htotal = 1920 + 24 + 48 + 88, 1380 .vdisplay = 1080, 1381 .vsync_start = 1080 + 3, 1382 .vsync_end = 1080 + 3 + 12, 1383 .vtotal = 1080 + 3 + 12 + 17, 1384 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1385 }; 1386 1387 static const struct panel_desc ivo_m133nwf4_r0 = { 1388 .modes = &ivo_m133nwf4_r0_mode, 1389 .num_modes = 1, 1390 .bpc = 8, 1391 .size = { 1392 .width = 294, 1393 .height = 165, 1394 }, 1395 .delay = { 1396 .hpd_absent = 200, 1397 .unprepare = 500, 1398 }, 1399 }; 1400 1401 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = { 1402 .clock = 81000, 1403 .hdisplay = 1366, 1404 .hsync_start = 1366 + 40, 1405 .hsync_end = 1366 + 40 + 32, 1406 .htotal = 1366 + 40 + 32 + 62, 1407 .vdisplay = 768, 1408 .vsync_start = 768 + 5, 1409 .vsync_end = 768 + 5 + 5, 1410 .vtotal = 768 + 5 + 5 + 122, 1411 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1412 }; 1413 1414 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = { 1415 .modes = &kingdisplay_kd116n21_30nv_a010_mode, 1416 .num_modes = 1, 1417 .bpc = 6, 1418 .size = { 1419 .width = 256, 1420 .height = 144, 1421 }, 1422 .delay = { 1423 .hpd_absent = 200, 1424 }, 1425 }; 1426 1427 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = { 1428 .clock = 200000, 1429 .hdisplay = 1536, 1430 .hsync_start = 1536 + 12, 1431 .hsync_end = 1536 + 12 + 16, 1432 .htotal = 1536 + 12 + 16 + 48, 1433 .vdisplay = 2048, 1434 .vsync_start = 2048 + 8, 1435 .vsync_end = 2048 + 8 + 4, 1436 .vtotal = 2048 + 8 + 4 + 8, 1437 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1438 }; 1439 1440 static const struct panel_desc lg_lp079qx1_sp0v = { 1441 .modes = &lg_lp079qx1_sp0v_mode, 1442 .num_modes = 1, 1443 .size = { 1444 .width = 129, 1445 .height = 171, 1446 }, 1447 }; 1448 1449 static const struct drm_display_mode lg_lp097qx1_spa1_mode = { 1450 .clock = 205210, 1451 .hdisplay = 2048, 1452 .hsync_start = 2048 + 150, 1453 .hsync_end = 2048 + 150 + 5, 1454 .htotal = 2048 + 150 + 5 + 5, 1455 .vdisplay = 1536, 1456 .vsync_start = 1536 + 3, 1457 .vsync_end = 1536 + 3 + 1, 1458 .vtotal = 1536 + 3 + 1 + 9, 1459 }; 1460 1461 static const struct panel_desc lg_lp097qx1_spa1 = { 1462 .modes = &lg_lp097qx1_spa1_mode, 1463 .num_modes = 1, 1464 .size = { 1465 .width = 208, 1466 .height = 147, 1467 }, 1468 }; 1469 1470 static const struct drm_display_mode lg_lp120up1_mode = { 1471 .clock = 162300, 1472 .hdisplay = 1920, 1473 .hsync_start = 1920 + 40, 1474 .hsync_end = 1920 + 40 + 40, 1475 .htotal = 1920 + 40 + 40 + 80, 1476 .vdisplay = 1280, 1477 .vsync_start = 1280 + 4, 1478 .vsync_end = 1280 + 4 + 4, 1479 .vtotal = 1280 + 4 + 4 + 12, 1480 }; 1481 1482 static const struct panel_desc lg_lp120up1 = { 1483 .modes = &lg_lp120up1_mode, 1484 .num_modes = 1, 1485 .bpc = 8, 1486 .size = { 1487 .width = 267, 1488 .height = 183, 1489 }, 1490 }; 1491 1492 static const struct drm_display_mode lg_lp129qe_mode = { 1493 .clock = 285250, 1494 .hdisplay = 2560, 1495 .hsync_start = 2560 + 48, 1496 .hsync_end = 2560 + 48 + 32, 1497 .htotal = 2560 + 48 + 32 + 80, 1498 .vdisplay = 1700, 1499 .vsync_start = 1700 + 3, 1500 .vsync_end = 1700 + 3 + 10, 1501 .vtotal = 1700 + 3 + 10 + 36, 1502 }; 1503 1504 static const struct panel_desc lg_lp129qe = { 1505 .modes = &lg_lp129qe_mode, 1506 .num_modes = 1, 1507 .bpc = 8, 1508 .size = { 1509 .width = 272, 1510 .height = 181, 1511 }, 1512 }; 1513 1514 static const struct drm_display_mode neweast_wjfh116008a_modes[] = { 1515 { 1516 .clock = 138500, 1517 .hdisplay = 1920, 1518 .hsync_start = 1920 + 48, 1519 .hsync_end = 1920 + 48 + 32, 1520 .htotal = 1920 + 48 + 32 + 80, 1521 .vdisplay = 1080, 1522 .vsync_start = 1080 + 3, 1523 .vsync_end = 1080 + 3 + 5, 1524 .vtotal = 1080 + 3 + 5 + 23, 1525 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1526 }, { 1527 .clock = 110920, 1528 .hdisplay = 1920, 1529 .hsync_start = 1920 + 48, 1530 .hsync_end = 1920 + 48 + 32, 1531 .htotal = 1920 + 48 + 32 + 80, 1532 .vdisplay = 1080, 1533 .vsync_start = 1080 + 3, 1534 .vsync_end = 1080 + 3 + 5, 1535 .vtotal = 1080 + 3 + 5 + 23, 1536 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1537 } 1538 }; 1539 1540 static const struct panel_desc neweast_wjfh116008a = { 1541 .modes = neweast_wjfh116008a_modes, 1542 .num_modes = 2, 1543 .bpc = 6, 1544 .size = { 1545 .width = 260, 1546 .height = 150, 1547 }, 1548 .delay = { 1549 .hpd_reliable = 110, 1550 .enable = 20, 1551 .unprepare = 500, 1552 }, 1553 }; 1554 1555 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = { 1556 .clock = 271560, 1557 .hdisplay = 2560, 1558 .hsync_start = 2560 + 48, 1559 .hsync_end = 2560 + 48 + 32, 1560 .htotal = 2560 + 48 + 32 + 80, 1561 .vdisplay = 1600, 1562 .vsync_start = 1600 + 2, 1563 .vsync_end = 1600 + 2 + 5, 1564 .vtotal = 1600 + 2 + 5 + 57, 1565 }; 1566 1567 static const struct panel_desc samsung_lsn122dl01_c01 = { 1568 .modes = &samsung_lsn122dl01_c01_mode, 1569 .num_modes = 1, 1570 .size = { 1571 .width = 263, 1572 .height = 164, 1573 }, 1574 }; 1575 1576 static const struct drm_display_mode samsung_ltn140at29_301_mode = { 1577 .clock = 76300, 1578 .hdisplay = 1366, 1579 .hsync_start = 1366 + 64, 1580 .hsync_end = 1366 + 64 + 48, 1581 .htotal = 1366 + 64 + 48 + 128, 1582 .vdisplay = 768, 1583 .vsync_start = 768 + 2, 1584 .vsync_end = 768 + 2 + 5, 1585 .vtotal = 768 + 2 + 5 + 17, 1586 }; 1587 1588 static const struct panel_desc samsung_ltn140at29_301 = { 1589 .modes = &samsung_ltn140at29_301_mode, 1590 .num_modes = 1, 1591 .bpc = 6, 1592 .size = { 1593 .width = 320, 1594 .height = 187, 1595 }, 1596 }; 1597 1598 static const struct drm_display_mode sharp_ld_d5116z01b_mode = { 1599 .clock = 168480, 1600 .hdisplay = 1920, 1601 .hsync_start = 1920 + 48, 1602 .hsync_end = 1920 + 48 + 32, 1603 .htotal = 1920 + 48 + 32 + 80, 1604 .vdisplay = 1280, 1605 .vsync_start = 1280 + 3, 1606 .vsync_end = 1280 + 3 + 10, 1607 .vtotal = 1280 + 3 + 10 + 57, 1608 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1609 }; 1610 1611 static const struct panel_desc sharp_ld_d5116z01b = { 1612 .modes = &sharp_ld_d5116z01b_mode, 1613 .num_modes = 1, 1614 .bpc = 8, 1615 .size = { 1616 .width = 260, 1617 .height = 120, 1618 }, 1619 }; 1620 1621 static const struct display_timing sharp_lq123p1jx31_timing = { 1622 .pixelclock = { 252750000, 252750000, 266604720 }, 1623 .hactive = { 2400, 2400, 2400 }, 1624 .hfront_porch = { 48, 48, 48 }, 1625 .hback_porch = { 80, 80, 84 }, 1626 .hsync_len = { 32, 32, 32 }, 1627 .vactive = { 1600, 1600, 1600 }, 1628 .vfront_porch = { 3, 3, 3 }, 1629 .vback_porch = { 33, 33, 120 }, 1630 .vsync_len = { 10, 10, 10 }, 1631 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1632 }; 1633 1634 static const struct panel_desc sharp_lq123p1jx31 = { 1635 .timings = &sharp_lq123p1jx31_timing, 1636 .num_timings = 1, 1637 .bpc = 8, 1638 .size = { 1639 .width = 259, 1640 .height = 173, 1641 }, 1642 .delay = { 1643 .hpd_reliable = 110, 1644 .enable = 50, 1645 .unprepare = 550, 1646 }, 1647 }; 1648 1649 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = { 1650 { 1651 .clock = 346500, 1652 .hdisplay = 1920, 1653 .hsync_start = 1920 + 48, 1654 .hsync_end = 1920 + 48 + 32, 1655 .htotal = 1920 + 48 + 32 + 80, 1656 .vdisplay = 1080, 1657 .vsync_start = 1080 + 3, 1658 .vsync_end = 1080 + 3 + 5, 1659 .vtotal = 1080 + 3 + 5 + 69, 1660 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1661 }, { 1662 .clock = 144370, 1663 .hdisplay = 1920, 1664 .hsync_start = 1920 + 48, 1665 .hsync_end = 1920 + 48 + 32, 1666 .htotal = 1920 + 48 + 32 + 80, 1667 .vdisplay = 1080, 1668 .vsync_start = 1080 + 3, 1669 .vsync_end = 1080 + 3 + 5, 1670 .vtotal = 1080 + 3 + 5 + 69, 1671 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1672 }, 1673 }; 1674 1675 static const struct panel_desc sharp_lq140m1jw46 = { 1676 .modes = sharp_lq140m1jw46_mode, 1677 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode), 1678 .bpc = 8, 1679 .size = { 1680 .width = 309, 1681 .height = 174, 1682 }, 1683 .delay = { 1684 .hpd_absent = 80, 1685 .enable = 50, 1686 .unprepare = 500, 1687 }, 1688 }; 1689 1690 static const struct drm_display_mode starry_kr122ea0sra_mode = { 1691 .clock = 147000, 1692 .hdisplay = 1920, 1693 .hsync_start = 1920 + 16, 1694 .hsync_end = 1920 + 16 + 16, 1695 .htotal = 1920 + 16 + 16 + 32, 1696 .vdisplay = 1200, 1697 .vsync_start = 1200 + 15, 1698 .vsync_end = 1200 + 15 + 2, 1699 .vtotal = 1200 + 15 + 2 + 18, 1700 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1701 }; 1702 1703 static const struct panel_desc starry_kr122ea0sra = { 1704 .modes = &starry_kr122ea0sra_mode, 1705 .num_modes = 1, 1706 .size = { 1707 .width = 263, 1708 .height = 164, 1709 }, 1710 .delay = { 1711 /* TODO: should be hpd-absent and no-hpd should be set? */ 1712 .hpd_reliable = 10 + 200, 1713 .enable = 50, 1714 .unprepare = 10 + 500, 1715 }, 1716 }; 1717 1718 static const struct of_device_id platform_of_match[] = { 1719 { 1720 /* Must be first */ 1721 .compatible = "edp-panel", 1722 }, { 1723 .compatible = "auo,b101ean01", 1724 .data = &auo_b101ean01, 1725 }, { 1726 .compatible = "auo,b116xa01", 1727 .data = &auo_b116xak01, 1728 }, { 1729 .compatible = "auo,b116xw03", 1730 .data = &auo_b116xw03, 1731 }, { 1732 .compatible = "auo,b133han05", 1733 .data = &auo_b133han05, 1734 }, { 1735 .compatible = "auo,b133htn01", 1736 .data = &auo_b133htn01, 1737 }, { 1738 .compatible = "auo,b133xtn01", 1739 .data = &auo_b133xtn01, 1740 }, { 1741 .compatible = "auo,b140han06", 1742 .data = &auo_b140han06, 1743 }, { 1744 .compatible = "boe,nv101wxmn51", 1745 .data = &boe_nv101wxmn51, 1746 }, { 1747 .compatible = "boe,nv110wtm-n61", 1748 .data = &boe_nv110wtm_n61, 1749 }, { 1750 .compatible = "boe,nv133fhm-n61", 1751 .data = &boe_nv133fhm_n61, 1752 }, { 1753 .compatible = "boe,nv133fhm-n62", 1754 .data = &boe_nv133fhm_n61, 1755 }, { 1756 .compatible = "boe,nv140fhmn49", 1757 .data = &boe_nv140fhmn49, 1758 }, { 1759 .compatible = "innolux,n116bca-ea1", 1760 .data = &innolux_n116bca_ea1, 1761 }, { 1762 .compatible = "innolux,n116bge", 1763 .data = &innolux_n116bge, 1764 }, { 1765 .compatible = "innolux,n125hce-gn1", 1766 .data = &innolux_n125hce_gn1, 1767 }, { 1768 .compatible = "innolux,p120zdg-bf1", 1769 .data = &innolux_p120zdg_bf1, 1770 }, { 1771 .compatible = "ivo,m133nwf4-r0", 1772 .data = &ivo_m133nwf4_r0, 1773 }, { 1774 .compatible = "kingdisplay,kd116n21-30nv-a010", 1775 .data = &kingdisplay_kd116n21_30nv_a010, 1776 }, { 1777 .compatible = "lg,lp079qx1-sp0v", 1778 .data = &lg_lp079qx1_sp0v, 1779 }, { 1780 .compatible = "lg,lp097qx1-spa1", 1781 .data = &lg_lp097qx1_spa1, 1782 }, { 1783 .compatible = "lg,lp120up1", 1784 .data = &lg_lp120up1, 1785 }, { 1786 .compatible = "lg,lp129qe", 1787 .data = &lg_lp129qe, 1788 }, { 1789 .compatible = "neweast,wjfh116008a", 1790 .data = &neweast_wjfh116008a, 1791 }, { 1792 .compatible = "samsung,lsn122dl01-c01", 1793 .data = &samsung_lsn122dl01_c01, 1794 }, { 1795 .compatible = "samsung,ltn140at29-301", 1796 .data = &samsung_ltn140at29_301, 1797 }, { 1798 .compatible = "sharp,ld-d5116z01b", 1799 .data = &sharp_ld_d5116z01b, 1800 }, { 1801 .compatible = "sharp,lq123p1jx31", 1802 .data = &sharp_lq123p1jx31, 1803 }, { 1804 .compatible = "sharp,lq140m1jw46", 1805 .data = &sharp_lq140m1jw46, 1806 }, { 1807 .compatible = "starry,kr122ea0sra", 1808 .data = &starry_kr122ea0sra, 1809 }, { 1810 /* sentinel */ 1811 } 1812 }; 1813 MODULE_DEVICE_TABLE(of, platform_of_match); 1814 1815 static const struct panel_delay delay_200_500_p2e80 = { 1816 .hpd_absent = 200, 1817 .unprepare = 500, 1818 .prepare_to_enable = 80, 1819 }; 1820 1821 static const struct panel_delay delay_200_500_p2e100 = { 1822 .hpd_absent = 200, 1823 .unprepare = 500, 1824 .prepare_to_enable = 100, 1825 }; 1826 1827 static const struct panel_delay delay_200_500_e50 = { 1828 .hpd_absent = 200, 1829 .unprepare = 500, 1830 .enable = 50, 1831 }; 1832 1833 static const struct panel_delay delay_200_500_e80_d50 = { 1834 .hpd_absent = 200, 1835 .unprepare = 500, 1836 .enable = 80, 1837 .disable = 50, 1838 }; 1839 1840 static const struct panel_delay delay_100_500_e200 = { 1841 .hpd_absent = 100, 1842 .unprepare = 500, 1843 .enable = 200, 1844 }; 1845 1846 static const struct panel_delay delay_200_500_e200 = { 1847 .hpd_absent = 200, 1848 .unprepare = 500, 1849 .enable = 200, 1850 }; 1851 1852 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \ 1853 { \ 1854 .name = _name, \ 1855 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1856 product_id), \ 1857 .delay = _delay \ 1858 } 1859 1860 /* 1861 * This table is used to figure out power sequencing delays for panels that 1862 * are detected by EDID. Entries here may point to entries in the 1863 * platform_of_match table (if a panel is listed in both places). 1864 * 1865 * Sort first by vendor, then by product ID. 1866 */ 1867 static const struct edp_panel_entry edp_panels[] = { 1868 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), 1869 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"), 1870 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), 1871 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"), 1872 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01"), 1873 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"), 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', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"), 1882 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"), 1883 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"), 1884 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"), 1885 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"), 1886 1887 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"), 1888 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), 1889 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"), 1890 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"), 1891 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"), 1892 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"), 1893 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"), 1894 1895 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), 1896 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"), 1897 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"), 1898 1899 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), 1900 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), 1901 1902 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"), 1903 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"), 1904 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"), 1905 1906 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"), 1907 1908 { /* sentinal */ } 1909 }; 1910 1911 static const struct edp_panel_entry *find_edp_panel(u32 panel_id) 1912 { 1913 const struct edp_panel_entry *panel; 1914 1915 if (!panel_id) 1916 return NULL; 1917 1918 for (panel = edp_panels; panel->panel_id; panel++) 1919 if (panel->panel_id == panel_id) 1920 return panel; 1921 1922 return NULL; 1923 } 1924 1925 static int panel_edp_platform_probe(struct platform_device *pdev) 1926 { 1927 const struct of_device_id *id; 1928 1929 /* Skip one since "edp-panel" is only supported on DP AUX bus */ 1930 id = of_match_node(platform_of_match + 1, pdev->dev.of_node); 1931 if (!id) 1932 return -ENODEV; 1933 1934 return panel_edp_probe(&pdev->dev, id->data, NULL); 1935 } 1936 1937 static void panel_edp_platform_remove(struct platform_device *pdev) 1938 { 1939 panel_edp_remove(&pdev->dev); 1940 } 1941 1942 static void panel_edp_platform_shutdown(struct platform_device *pdev) 1943 { 1944 panel_edp_shutdown(&pdev->dev); 1945 } 1946 1947 static const struct dev_pm_ops panel_edp_pm_ops = { 1948 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL) 1949 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1950 pm_runtime_force_resume) 1951 }; 1952 1953 static struct platform_driver panel_edp_platform_driver = { 1954 .driver = { 1955 .name = "panel-edp", 1956 .of_match_table = platform_of_match, 1957 .pm = &panel_edp_pm_ops, 1958 }, 1959 .probe = panel_edp_platform_probe, 1960 .remove_new = panel_edp_platform_remove, 1961 .shutdown = panel_edp_platform_shutdown, 1962 }; 1963 1964 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep) 1965 { 1966 const struct of_device_id *id; 1967 1968 id = of_match_node(platform_of_match, aux_ep->dev.of_node); 1969 if (!id) 1970 return -ENODEV; 1971 1972 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux); 1973 } 1974 1975 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep) 1976 { 1977 panel_edp_remove(&aux_ep->dev); 1978 } 1979 1980 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep) 1981 { 1982 panel_edp_shutdown(&aux_ep->dev); 1983 } 1984 1985 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = { 1986 .driver = { 1987 .name = "panel-simple-dp-aux", 1988 .of_match_table = platform_of_match, /* Same as platform one! */ 1989 .pm = &panel_edp_pm_ops, 1990 }, 1991 .probe = panel_edp_dp_aux_ep_probe, 1992 .remove = panel_edp_dp_aux_ep_remove, 1993 .shutdown = panel_edp_dp_aux_ep_shutdown, 1994 }; 1995 1996 static int __init panel_edp_init(void) 1997 { 1998 int err; 1999 2000 err = platform_driver_register(&panel_edp_platform_driver); 2001 if (err < 0) 2002 return err; 2003 2004 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver); 2005 if (err < 0) 2006 goto err_did_platform_register; 2007 2008 return 0; 2009 2010 err_did_platform_register: 2011 platform_driver_unregister(&panel_edp_platform_driver); 2012 2013 return err; 2014 } 2015 module_init(panel_edp_init); 2016 2017 static void __exit panel_edp_exit(void) 2018 { 2019 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver); 2020 platform_driver_unregister(&panel_edp_platform_driver); 2021 } 2022 module_exit(panel_edp_exit); 2023 2024 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 2025 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels"); 2026 MODULE_LICENSE("GPL and additional rights"); 2027