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 /** @override_edid_mode: Override the mode obtained by edid. */ 208 const struct drm_display_mode *override_edid_mode; 209 }; 210 211 struct panel_edp { 212 struct drm_panel base; 213 bool enabled; 214 bool no_hpd; 215 216 bool prepared; 217 218 ktime_t prepared_time; 219 ktime_t unprepared_time; 220 221 const struct panel_desc *desc; 222 223 struct regulator *supply; 224 struct i2c_adapter *ddc; 225 struct drm_dp_aux *aux; 226 227 struct gpio_desc *enable_gpio; 228 struct gpio_desc *hpd_gpio; 229 230 const struct edp_panel_entry *detected_panel; 231 232 struct edid *edid; 233 234 struct drm_display_mode override_mode; 235 236 enum drm_panel_orientation orientation; 237 }; 238 239 static inline struct panel_edp *to_panel_edp(struct drm_panel *panel) 240 { 241 return container_of(panel, struct panel_edp, base); 242 } 243 244 static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel, 245 struct drm_connector *connector) 246 { 247 struct drm_display_mode *mode; 248 unsigned int i, num = 0; 249 250 for (i = 0; i < panel->desc->num_timings; i++) { 251 const struct display_timing *dt = &panel->desc->timings[i]; 252 struct videomode vm; 253 254 videomode_from_timing(dt, &vm); 255 mode = drm_mode_create(connector->dev); 256 if (!mode) { 257 dev_err(panel->base.dev, "failed to add mode %ux%u\n", 258 dt->hactive.typ, dt->vactive.typ); 259 continue; 260 } 261 262 drm_display_mode_from_videomode(&vm, mode); 263 264 mode->type |= DRM_MODE_TYPE_DRIVER; 265 266 if (panel->desc->num_timings == 1) 267 mode->type |= DRM_MODE_TYPE_PREFERRED; 268 269 drm_mode_probed_add(connector, mode); 270 num++; 271 } 272 273 return num; 274 } 275 276 static unsigned int panel_edp_get_display_modes(struct panel_edp *panel, 277 struct drm_connector *connector) 278 { 279 struct drm_display_mode *mode; 280 unsigned int i, num = 0; 281 282 for (i = 0; i < panel->desc->num_modes; i++) { 283 const struct drm_display_mode *m = &panel->desc->modes[i]; 284 285 mode = drm_mode_duplicate(connector->dev, m); 286 if (!mode) { 287 dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n", 288 m->hdisplay, m->vdisplay, 289 drm_mode_vrefresh(m)); 290 continue; 291 } 292 293 mode->type |= DRM_MODE_TYPE_DRIVER; 294 295 if (panel->desc->num_modes == 1) 296 mode->type |= DRM_MODE_TYPE_PREFERRED; 297 298 drm_mode_set_name(mode); 299 300 drm_mode_probed_add(connector, mode); 301 num++; 302 } 303 304 return num; 305 } 306 307 static int panel_edp_override_edid_mode(struct panel_edp *panel, 308 struct drm_connector *connector, 309 const struct drm_display_mode *override_mode) 310 { 311 struct drm_display_mode *mode; 312 313 mode = drm_mode_duplicate(connector->dev, override_mode); 314 if (!mode) { 315 dev_err(panel->base.dev, "failed to add additional mode\n"); 316 return 0; 317 } 318 319 mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 320 drm_mode_set_name(mode); 321 drm_mode_probed_add(connector, mode); 322 return 1; 323 } 324 325 static int panel_edp_get_non_edid_modes(struct panel_edp *panel, 326 struct drm_connector *connector) 327 { 328 struct drm_display_mode *mode; 329 bool has_override = panel->override_mode.type; 330 unsigned int num = 0; 331 332 if (!panel->desc) 333 return 0; 334 335 if (has_override) { 336 mode = drm_mode_duplicate(connector->dev, 337 &panel->override_mode); 338 if (mode) { 339 drm_mode_probed_add(connector, mode); 340 num = 1; 341 } else { 342 dev_err(panel->base.dev, "failed to add override mode\n"); 343 } 344 } 345 346 /* Only add timings if override was not there or failed to validate */ 347 if (num == 0 && panel->desc->num_timings) 348 num = panel_edp_get_timings_modes(panel, connector); 349 350 /* 351 * Only add fixed modes if timings/override added no mode. 352 * 353 * We should only ever have either the display timings specified 354 * or a fixed mode. Anything else is rather bogus. 355 */ 356 WARN_ON(panel->desc->num_timings && panel->desc->num_modes); 357 if (num == 0) 358 num = panel_edp_get_display_modes(panel, connector); 359 360 connector->display_info.bpc = panel->desc->bpc; 361 connector->display_info.width_mm = panel->desc->size.width; 362 connector->display_info.height_mm = panel->desc->size.height; 363 364 return num; 365 } 366 367 static void panel_edp_wait(ktime_t start_ktime, unsigned int min_ms) 368 { 369 ktime_t now_ktime, min_ktime; 370 371 if (!min_ms) 372 return; 373 374 min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms)); 375 now_ktime = ktime_get_boottime(); 376 377 if (ktime_before(now_ktime, min_ktime)) 378 msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1); 379 } 380 381 static int panel_edp_disable(struct drm_panel *panel) 382 { 383 struct panel_edp *p = to_panel_edp(panel); 384 385 if (!p->enabled) 386 return 0; 387 388 if (p->desc->delay.disable) 389 msleep(p->desc->delay.disable); 390 391 p->enabled = false; 392 393 return 0; 394 } 395 396 static int panel_edp_suspend(struct device *dev) 397 { 398 struct panel_edp *p = dev_get_drvdata(dev); 399 400 drm_dp_dpcd_set_powered(p->aux, false); 401 gpiod_set_value_cansleep(p->enable_gpio, 0); 402 regulator_disable(p->supply); 403 p->unprepared_time = ktime_get_boottime(); 404 405 return 0; 406 } 407 408 static int panel_edp_unprepare(struct drm_panel *panel) 409 { 410 struct panel_edp *p = to_panel_edp(panel); 411 int ret; 412 413 /* Unpreparing when already unprepared is a no-op */ 414 if (!p->prepared) 415 return 0; 416 417 ret = pm_runtime_put_sync_suspend(panel->dev); 418 if (ret < 0) 419 return ret; 420 p->prepared = false; 421 422 return 0; 423 } 424 425 static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p) 426 { 427 p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); 428 if (IS_ERR(p->hpd_gpio)) 429 return dev_err_probe(dev, PTR_ERR(p->hpd_gpio), 430 "failed to get 'hpd' GPIO\n"); 431 432 return 0; 433 } 434 435 static bool panel_edp_can_read_hpd(struct panel_edp *p) 436 { 437 return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted)); 438 } 439 440 static int panel_edp_prepare_once(struct panel_edp *p) 441 { 442 struct device *dev = p->base.dev; 443 unsigned int delay; 444 int err; 445 int hpd_asserted; 446 unsigned long hpd_wait_us; 447 448 panel_edp_wait(p->unprepared_time, p->desc->delay.unprepare); 449 450 err = regulator_enable(p->supply); 451 if (err < 0) { 452 dev_err(dev, "failed to enable supply: %d\n", err); 453 return err; 454 } 455 456 gpiod_set_value_cansleep(p->enable_gpio, 1); 457 drm_dp_dpcd_set_powered(p->aux, true); 458 459 delay = p->desc->delay.hpd_reliable; 460 if (p->no_hpd) 461 delay = max(delay, p->desc->delay.hpd_absent); 462 if (delay) 463 msleep(delay); 464 465 if (panel_edp_can_read_hpd(p)) { 466 if (p->desc->delay.hpd_absent) 467 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL; 468 else 469 hpd_wait_us = 2000000; 470 471 if (p->hpd_gpio) { 472 err = readx_poll_timeout(gpiod_get_value_cansleep, 473 p->hpd_gpio, hpd_asserted, 474 hpd_asserted, 1000, hpd_wait_us); 475 if (hpd_asserted < 0) 476 err = hpd_asserted; 477 } else { 478 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us); 479 } 480 481 if (err) { 482 if (err != -ETIMEDOUT) 483 dev_err(dev, 484 "error waiting for hpd GPIO: %d\n", err); 485 goto error; 486 } 487 } 488 489 p->prepared_time = ktime_get_boottime(); 490 491 return 0; 492 493 error: 494 drm_dp_dpcd_set_powered(p->aux, false); 495 gpiod_set_value_cansleep(p->enable_gpio, 0); 496 regulator_disable(p->supply); 497 p->unprepared_time = ktime_get_boottime(); 498 499 return err; 500 } 501 502 /* 503 * Some panels simply don't always come up and need to be power cycled to 504 * work properly. We'll allow for a handful of retries. 505 */ 506 #define MAX_PANEL_PREPARE_TRIES 5 507 508 static int panel_edp_resume(struct device *dev) 509 { 510 struct panel_edp *p = dev_get_drvdata(dev); 511 int ret; 512 int try; 513 514 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) { 515 ret = panel_edp_prepare_once(p); 516 if (ret != -ETIMEDOUT) 517 break; 518 } 519 520 if (ret == -ETIMEDOUT) 521 dev_err(dev, "Prepare timeout after %d tries\n", try); 522 else if (try) 523 dev_warn(dev, "Prepare needed %d retries\n", try); 524 525 return ret; 526 } 527 528 static int panel_edp_prepare(struct drm_panel *panel) 529 { 530 struct panel_edp *p = to_panel_edp(panel); 531 int ret; 532 533 /* Preparing when already prepared is a no-op */ 534 if (p->prepared) 535 return 0; 536 537 ret = pm_runtime_get_sync(panel->dev); 538 if (ret < 0) { 539 pm_runtime_put_autosuspend(panel->dev); 540 return ret; 541 } 542 543 p->prepared = true; 544 545 return 0; 546 } 547 548 static int panel_edp_enable(struct drm_panel *panel) 549 { 550 struct panel_edp *p = to_panel_edp(panel); 551 unsigned int delay; 552 553 if (p->enabled) 554 return 0; 555 556 delay = p->desc->delay.enable; 557 558 /* 559 * If there is a "prepare_to_enable" delay then that's supposed to be 560 * the delay from HPD going high until we can turn the backlight on. 561 * However, we can only count this if HPD is readable by the panel 562 * driver. 563 * 564 * If we aren't handling the HPD pin ourselves then the best we 565 * can do is assume that HPD went high immediately before we were 566 * called (and link training took zero time). Note that "no-hpd" 567 * actually counts as handling HPD ourselves since we're doing the 568 * worst case delay (in prepare) ourselves. 569 * 570 * NOTE: if we ever end up in this "if" statement then we're 571 * guaranteed that the panel_edp_wait() call below will do no delay. 572 * It already handles that case, though, so we don't need any special 573 * code for it. 574 */ 575 if (p->desc->delay.prepare_to_enable && 576 !panel_edp_can_read_hpd(p) && !p->no_hpd) 577 delay = max(delay, p->desc->delay.prepare_to_enable); 578 579 if (delay) 580 msleep(delay); 581 582 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable); 583 584 p->enabled = true; 585 586 return 0; 587 } 588 589 static int panel_edp_get_modes(struct drm_panel *panel, 590 struct drm_connector *connector) 591 { 592 struct panel_edp *p = to_panel_edp(panel); 593 int num = 0; 594 bool has_override_edid_mode = p->detected_panel && 595 p->detected_panel != ERR_PTR(-EINVAL) && 596 p->detected_panel->override_edid_mode; 597 598 /* probe EDID if a DDC bus is available */ 599 if (p->ddc) { 600 pm_runtime_get_sync(panel->dev); 601 602 if (!p->edid) 603 p->edid = drm_get_edid(connector, p->ddc); 604 if (p->edid) { 605 if (has_override_edid_mode) { 606 /* 607 * override_edid_mode is specified. Use 608 * override_edid_mode instead of from edid. 609 */ 610 num += panel_edp_override_edid_mode(p, connector, 611 p->detected_panel->override_edid_mode); 612 } else { 613 num += drm_add_edid_modes(connector, p->edid); 614 } 615 } 616 617 pm_runtime_mark_last_busy(panel->dev); 618 pm_runtime_put_autosuspend(panel->dev); 619 } 620 621 /* 622 * Add hard-coded panel modes. Don't call this if there are no timings 623 * and no modes (the generic edp-panel case) because it will clobber 624 * the display_info that was already set by drm_add_edid_modes(). 625 */ 626 if (p->desc->num_timings || p->desc->num_modes) 627 num += panel_edp_get_non_edid_modes(p, connector); 628 else if (!num) 629 dev_warn(p->base.dev, "No display modes\n"); 630 631 /* 632 * TODO: Remove once all drm drivers call 633 * drm_connector_set_orientation_from_panel() 634 */ 635 drm_connector_set_panel_orientation(connector, p->orientation); 636 637 return num; 638 } 639 640 static int panel_edp_get_timings(struct drm_panel *panel, 641 unsigned int num_timings, 642 struct display_timing *timings) 643 { 644 struct panel_edp *p = to_panel_edp(panel); 645 unsigned int i; 646 647 if (p->desc->num_timings < num_timings) 648 num_timings = p->desc->num_timings; 649 650 if (timings) 651 for (i = 0; i < num_timings; i++) 652 timings[i] = p->desc->timings[i]; 653 654 return p->desc->num_timings; 655 } 656 657 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel) 658 { 659 struct panel_edp *p = to_panel_edp(panel); 660 661 return p->orientation; 662 } 663 664 static int detected_panel_show(struct seq_file *s, void *data) 665 { 666 struct drm_panel *panel = s->private; 667 struct panel_edp *p = to_panel_edp(panel); 668 669 if (IS_ERR(p->detected_panel)) 670 seq_puts(s, "UNKNOWN\n"); 671 else if (!p->detected_panel) 672 seq_puts(s, "HARDCODED\n"); 673 else 674 seq_printf(s, "%s\n", p->detected_panel->name); 675 676 return 0; 677 } 678 679 DEFINE_SHOW_ATTRIBUTE(detected_panel); 680 681 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root) 682 { 683 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops); 684 } 685 686 static const struct drm_panel_funcs panel_edp_funcs = { 687 .disable = panel_edp_disable, 688 .unprepare = panel_edp_unprepare, 689 .prepare = panel_edp_prepare, 690 .enable = panel_edp_enable, 691 .get_modes = panel_edp_get_modes, 692 .get_orientation = panel_edp_get_orientation, 693 .get_timings = panel_edp_get_timings, 694 .debugfs_init = panel_edp_debugfs_init, 695 }; 696 697 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \ 698 (to_check->field.typ >= bounds->field.min && \ 699 to_check->field.typ <= bounds->field.max) 700 static void panel_edp_parse_panel_timing_node(struct device *dev, 701 struct panel_edp *panel, 702 const struct display_timing *ot) 703 { 704 const struct panel_desc *desc = panel->desc; 705 struct videomode vm; 706 unsigned int i; 707 708 if (WARN_ON(desc->num_modes)) { 709 dev_err(dev, "Reject override mode: panel has a fixed mode\n"); 710 return; 711 } 712 if (WARN_ON(!desc->num_timings)) { 713 dev_err(dev, "Reject override mode: no timings specified\n"); 714 return; 715 } 716 717 for (i = 0; i < panel->desc->num_timings; i++) { 718 const struct display_timing *dt = &panel->desc->timings[i]; 719 720 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) || 721 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) || 722 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) || 723 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) || 724 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) || 725 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) || 726 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) || 727 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len)) 728 continue; 729 730 if (ot->flags != dt->flags) 731 continue; 732 733 videomode_from_timing(ot, &vm); 734 drm_display_mode_from_videomode(&vm, &panel->override_mode); 735 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER | 736 DRM_MODE_TYPE_PREFERRED; 737 break; 738 } 739 740 if (WARN_ON(!panel->override_mode.type)) 741 dev_err(dev, "Reject override mode: No display_timing found\n"); 742 } 743 744 static const struct edp_panel_entry *find_edp_panel(u32 panel_id); 745 746 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel) 747 { 748 struct panel_desc *desc; 749 u32 panel_id; 750 char vend[4]; 751 u16 product_id; 752 u32 reliable_ms = 0; 753 u32 absent_ms = 0; 754 int ret; 755 756 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); 757 if (!desc) 758 return -ENOMEM; 759 panel->desc = desc; 760 761 /* 762 * Read the dts properties for the initial probe. These are used by 763 * the runtime resume code which will get called by the 764 * pm_runtime_get_sync() call below. 765 */ 766 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms); 767 desc->delay.hpd_reliable = reliable_ms; 768 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms); 769 desc->delay.hpd_absent = absent_ms; 770 771 /* Power the panel on so we can read the EDID */ 772 ret = pm_runtime_get_sync(dev); 773 if (ret < 0) { 774 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret); 775 goto exit; 776 } 777 778 panel_id = drm_edid_get_panel_id(panel->ddc); 779 if (!panel_id) { 780 dev_err(dev, "Couldn't identify panel via EDID\n"); 781 ret = -EIO; 782 goto exit; 783 } 784 drm_edid_decode_panel_id(panel_id, vend, &product_id); 785 786 panel->detected_panel = find_edp_panel(panel_id); 787 788 /* 789 * We're using non-optimized timings and want it really obvious that 790 * someone needs to add an entry to the table, so we'll do a WARN_ON 791 * splat. 792 */ 793 if (WARN_ON(!panel->detected_panel)) { 794 dev_warn(dev, 795 "Unknown panel %s %#06x, using conservative timings\n", 796 vend, product_id); 797 798 /* 799 * It's highly likely that the panel will work if we use very 800 * conservative timings, so let's do that. We already know that 801 * the HPD-related delays must have worked since we got this 802 * far, so we really just need the "unprepare" / "enable" 803 * delays. We don't need "prepare_to_enable" since that 804 * overlaps the "enable" delay anyway. 805 * 806 * Nearly all panels have a "unprepare" delay of 500 ms though 807 * there are a few with 1000. Let's stick 2000 in just to be 808 * super conservative. 809 * 810 * An "enable" delay of 80 ms seems the most common, but we'll 811 * throw in 200 ms to be safe. 812 */ 813 desc->delay.unprepare = 2000; 814 desc->delay.enable = 200; 815 816 panel->detected_panel = ERR_PTR(-EINVAL); 817 } else { 818 dev_info(dev, "Detected %s %s (%#06x)\n", 819 vend, panel->detected_panel->name, product_id); 820 821 /* Update the delay; everything else comes from EDID */ 822 desc->delay = *panel->detected_panel->delay; 823 } 824 825 ret = 0; 826 exit: 827 pm_runtime_mark_last_busy(dev); 828 pm_runtime_put_autosuspend(dev); 829 830 return ret; 831 } 832 833 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc, 834 struct drm_dp_aux *aux) 835 { 836 struct panel_edp *panel; 837 struct display_timing dt; 838 struct device_node *ddc; 839 int err; 840 841 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); 842 if (!panel) 843 return -ENOMEM; 844 845 panel->enabled = false; 846 panel->prepared_time = 0; 847 panel->desc = desc; 848 panel->aux = aux; 849 850 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd"); 851 if (!panel->no_hpd) { 852 err = panel_edp_get_hpd_gpio(dev, panel); 853 if (err) 854 return err; 855 } 856 857 panel->supply = devm_regulator_get(dev, "power"); 858 if (IS_ERR(panel->supply)) 859 return PTR_ERR(panel->supply); 860 861 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", 862 GPIOD_OUT_LOW); 863 if (IS_ERR(panel->enable_gpio)) 864 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio), 865 "failed to request GPIO\n"); 866 867 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); 868 if (err) { 869 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); 870 return err; 871 } 872 873 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); 874 if (ddc) { 875 panel->ddc = of_find_i2c_adapter_by_node(ddc); 876 of_node_put(ddc); 877 878 if (!panel->ddc) 879 return -EPROBE_DEFER; 880 } else if (aux) { 881 panel->ddc = &aux->ddc; 882 } 883 884 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt)) 885 panel_edp_parse_panel_timing_node(dev, panel, &dt); 886 887 dev_set_drvdata(dev, panel); 888 889 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP); 890 891 err = drm_panel_of_backlight(&panel->base); 892 if (err) 893 goto err_finished_ddc_init; 894 895 /* 896 * We use runtime PM for prepare / unprepare since those power the panel 897 * on and off and those can be very slow operations. This is important 898 * to optimize powering the panel on briefly to read the EDID before 899 * fully enabling the panel. 900 */ 901 pm_runtime_enable(dev); 902 pm_runtime_set_autosuspend_delay(dev, 1000); 903 pm_runtime_use_autosuspend(dev); 904 905 if (of_device_is_compatible(dev->of_node, "edp-panel")) { 906 err = generic_edp_panel_probe(dev, panel); 907 if (err) { 908 dev_err_probe(dev, err, 909 "Couldn't detect panel nor find a fallback\n"); 910 goto err_finished_pm_runtime; 911 } 912 /* generic_edp_panel_probe() replaces desc in the panel */ 913 desc = panel->desc; 914 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) { 915 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc); 916 } 917 918 if (!panel->base.backlight && panel->aux) { 919 pm_runtime_get_sync(dev); 920 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); 921 pm_runtime_mark_last_busy(dev); 922 pm_runtime_put_autosuspend(dev); 923 if (err) 924 goto err_finished_pm_runtime; 925 } 926 927 drm_panel_add(&panel->base); 928 929 return 0; 930 931 err_finished_pm_runtime: 932 pm_runtime_dont_use_autosuspend(dev); 933 pm_runtime_disable(dev); 934 err_finished_ddc_init: 935 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 936 put_device(&panel->ddc->dev); 937 938 return err; 939 } 940 941 static void panel_edp_remove(struct device *dev) 942 { 943 struct panel_edp *panel = dev_get_drvdata(dev); 944 945 drm_panel_remove(&panel->base); 946 drm_panel_disable(&panel->base); 947 drm_panel_unprepare(&panel->base); 948 949 pm_runtime_dont_use_autosuspend(dev); 950 pm_runtime_disable(dev); 951 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 952 put_device(&panel->ddc->dev); 953 954 kfree(panel->edid); 955 panel->edid = NULL; 956 } 957 958 static void panel_edp_shutdown(struct device *dev) 959 { 960 struct panel_edp *panel = dev_get_drvdata(dev); 961 962 drm_panel_disable(&panel->base); 963 drm_panel_unprepare(&panel->base); 964 } 965 966 static const struct display_timing auo_b101ean01_timing = { 967 .pixelclock = { 65300000, 72500000, 75000000 }, 968 .hactive = { 1280, 1280, 1280 }, 969 .hfront_porch = { 18, 119, 119 }, 970 .hback_porch = { 21, 21, 21 }, 971 .hsync_len = { 32, 32, 32 }, 972 .vactive = { 800, 800, 800 }, 973 .vfront_porch = { 4, 4, 4 }, 974 .vback_porch = { 8, 8, 8 }, 975 .vsync_len = { 18, 20, 20 }, 976 }; 977 978 static const struct panel_desc auo_b101ean01 = { 979 .timings = &auo_b101ean01_timing, 980 .num_timings = 1, 981 .bpc = 6, 982 .size = { 983 .width = 217, 984 .height = 136, 985 }, 986 }; 987 988 static const struct drm_display_mode auo_b116xak01_mode = { 989 .clock = 69300, 990 .hdisplay = 1366, 991 .hsync_start = 1366 + 48, 992 .hsync_end = 1366 + 48 + 32, 993 .htotal = 1366 + 48 + 32 + 10, 994 .vdisplay = 768, 995 .vsync_start = 768 + 4, 996 .vsync_end = 768 + 4 + 6, 997 .vtotal = 768 + 4 + 6 + 15, 998 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 999 }; 1000 1001 static const struct panel_desc auo_b116xak01 = { 1002 .modes = &auo_b116xak01_mode, 1003 .num_modes = 1, 1004 .bpc = 6, 1005 .size = { 1006 .width = 256, 1007 .height = 144, 1008 }, 1009 .delay = { 1010 .hpd_absent = 200, 1011 .unprepare = 500, 1012 .enable = 50, 1013 }, 1014 }; 1015 1016 static const struct drm_display_mode auo_b133han05_mode = { 1017 .clock = 142600, 1018 .hdisplay = 1920, 1019 .hsync_start = 1920 + 58, 1020 .hsync_end = 1920 + 58 + 42, 1021 .htotal = 1920 + 58 + 42 + 60, 1022 .vdisplay = 1080, 1023 .vsync_start = 1080 + 3, 1024 .vsync_end = 1080 + 3 + 5, 1025 .vtotal = 1080 + 3 + 5 + 54, 1026 }; 1027 1028 static const struct panel_desc auo_b133han05 = { 1029 .modes = &auo_b133han05_mode, 1030 .num_modes = 1, 1031 .bpc = 8, 1032 .size = { 1033 .width = 293, 1034 .height = 165, 1035 }, 1036 .delay = { 1037 .hpd_reliable = 100, 1038 .enable = 20, 1039 .unprepare = 50, 1040 }, 1041 }; 1042 1043 static const struct drm_display_mode auo_b133htn01_mode = { 1044 .clock = 150660, 1045 .hdisplay = 1920, 1046 .hsync_start = 1920 + 172, 1047 .hsync_end = 1920 + 172 + 80, 1048 .htotal = 1920 + 172 + 80 + 60, 1049 .vdisplay = 1080, 1050 .vsync_start = 1080 + 25, 1051 .vsync_end = 1080 + 25 + 10, 1052 .vtotal = 1080 + 25 + 10 + 10, 1053 }; 1054 1055 static const struct panel_desc auo_b133htn01 = { 1056 .modes = &auo_b133htn01_mode, 1057 .num_modes = 1, 1058 .bpc = 6, 1059 .size = { 1060 .width = 293, 1061 .height = 165, 1062 }, 1063 .delay = { 1064 .hpd_reliable = 105, 1065 .enable = 20, 1066 .unprepare = 50, 1067 }, 1068 }; 1069 1070 static const struct drm_display_mode auo_b133xtn01_mode = { 1071 .clock = 69500, 1072 .hdisplay = 1366, 1073 .hsync_start = 1366 + 48, 1074 .hsync_end = 1366 + 48 + 32, 1075 .htotal = 1366 + 48 + 32 + 20, 1076 .vdisplay = 768, 1077 .vsync_start = 768 + 3, 1078 .vsync_end = 768 + 3 + 6, 1079 .vtotal = 768 + 3 + 6 + 13, 1080 }; 1081 1082 static const struct panel_desc auo_b133xtn01 = { 1083 .modes = &auo_b133xtn01_mode, 1084 .num_modes = 1, 1085 .bpc = 6, 1086 .size = { 1087 .width = 293, 1088 .height = 165, 1089 }, 1090 }; 1091 1092 static const struct drm_display_mode auo_b140han06_mode = { 1093 .clock = 141000, 1094 .hdisplay = 1920, 1095 .hsync_start = 1920 + 16, 1096 .hsync_end = 1920 + 16 + 16, 1097 .htotal = 1920 + 16 + 16 + 152, 1098 .vdisplay = 1080, 1099 .vsync_start = 1080 + 3, 1100 .vsync_end = 1080 + 3 + 14, 1101 .vtotal = 1080 + 3 + 14 + 19, 1102 }; 1103 1104 static const struct panel_desc auo_b140han06 = { 1105 .modes = &auo_b140han06_mode, 1106 .num_modes = 1, 1107 .bpc = 8, 1108 .size = { 1109 .width = 309, 1110 .height = 174, 1111 }, 1112 .delay = { 1113 .hpd_reliable = 100, 1114 .enable = 20, 1115 .unprepare = 50, 1116 }, 1117 }; 1118 1119 static const struct drm_display_mode boe_nv101wxmn51_modes[] = { 1120 { 1121 .clock = 71900, 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 .clock = 57500, 1133 .hdisplay = 1280, 1134 .hsync_start = 1280 + 48, 1135 .hsync_end = 1280 + 48 + 32, 1136 .htotal = 1280 + 48 + 32 + 80, 1137 .vdisplay = 800, 1138 .vsync_start = 800 + 3, 1139 .vsync_end = 800 + 3 + 5, 1140 .vtotal = 800 + 3 + 5 + 24, 1141 }, 1142 }; 1143 1144 static const struct panel_desc boe_nv101wxmn51 = { 1145 .modes = boe_nv101wxmn51_modes, 1146 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes), 1147 .bpc = 8, 1148 .size = { 1149 .width = 217, 1150 .height = 136, 1151 }, 1152 .delay = { 1153 /* TODO: should be hpd-absent and no-hpd should be set? */ 1154 .hpd_reliable = 210, 1155 .enable = 50, 1156 .unprepare = 160, 1157 }, 1158 }; 1159 1160 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = { 1161 { 1162 .clock = 207800, 1163 .hdisplay = 2160, 1164 .hsync_start = 2160 + 48, 1165 .hsync_end = 2160 + 48 + 32, 1166 .htotal = 2160 + 48 + 32 + 100, 1167 .vdisplay = 1440, 1168 .vsync_start = 1440 + 3, 1169 .vsync_end = 1440 + 3 + 6, 1170 .vtotal = 1440 + 3 + 6 + 31, 1171 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1172 }, 1173 { 1174 .clock = 138500, 1175 .hdisplay = 2160, 1176 .hsync_start = 2160 + 48, 1177 .hsync_end = 2160 + 48 + 32, 1178 .htotal = 2160 + 48 + 32 + 100, 1179 .vdisplay = 1440, 1180 .vsync_start = 1440 + 3, 1181 .vsync_end = 1440 + 3 + 6, 1182 .vtotal = 1440 + 3 + 6 + 31, 1183 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1184 }, 1185 }; 1186 1187 static const struct panel_desc boe_nv110wtm_n61 = { 1188 .modes = boe_nv110wtm_n61_modes, 1189 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes), 1190 .bpc = 8, 1191 .size = { 1192 .width = 233, 1193 .height = 155, 1194 }, 1195 .delay = { 1196 .hpd_absent = 200, 1197 .prepare_to_enable = 80, 1198 .enable = 50, 1199 .unprepare = 500, 1200 }, 1201 }; 1202 1203 /* Also used for boe_nv133fhm_n62 */ 1204 static const struct drm_display_mode boe_nv133fhm_n61_modes = { 1205 .clock = 147840, 1206 .hdisplay = 1920, 1207 .hsync_start = 1920 + 48, 1208 .hsync_end = 1920 + 48 + 32, 1209 .htotal = 1920 + 48 + 32 + 200, 1210 .vdisplay = 1080, 1211 .vsync_start = 1080 + 3, 1212 .vsync_end = 1080 + 3 + 6, 1213 .vtotal = 1080 + 3 + 6 + 31, 1214 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1215 }; 1216 1217 /* Also used for boe_nv133fhm_n62 */ 1218 static const struct panel_desc boe_nv133fhm_n61 = { 1219 .modes = &boe_nv133fhm_n61_modes, 1220 .num_modes = 1, 1221 .bpc = 6, 1222 .size = { 1223 .width = 294, 1224 .height = 165, 1225 }, 1226 .delay = { 1227 /* 1228 * When power is first given to the panel there's a short 1229 * spike on the HPD line. It was explained that this spike 1230 * was until the TCON data download was complete. On 1231 * one system this was measured at 8 ms. We'll put 15 ms 1232 * in the prepare delay just to be safe. That means: 1233 * - If HPD isn't hooked up you still have 200 ms delay. 1234 * - If HPD is hooked up we won't try to look at it for the 1235 * first 15 ms. 1236 */ 1237 .hpd_reliable = 15, 1238 .hpd_absent = 200, 1239 1240 .unprepare = 500, 1241 }, 1242 }; 1243 1244 static const struct drm_display_mode boe_nv140fhmn49_modes[] = { 1245 { 1246 .clock = 148500, 1247 .hdisplay = 1920, 1248 .hsync_start = 1920 + 48, 1249 .hsync_end = 1920 + 48 + 32, 1250 .htotal = 2200, 1251 .vdisplay = 1080, 1252 .vsync_start = 1080 + 3, 1253 .vsync_end = 1080 + 3 + 5, 1254 .vtotal = 1125, 1255 }, 1256 }; 1257 1258 static const struct panel_desc boe_nv140fhmn49 = { 1259 .modes = boe_nv140fhmn49_modes, 1260 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes), 1261 .bpc = 6, 1262 .size = { 1263 .width = 309, 1264 .height = 174, 1265 }, 1266 .delay = { 1267 /* TODO: should be hpd-absent and no-hpd should be set? */ 1268 .hpd_reliable = 210, 1269 .enable = 50, 1270 .unprepare = 160, 1271 }, 1272 }; 1273 1274 static const struct drm_display_mode innolux_n116bca_ea1_mode = { 1275 .clock = 76420, 1276 .hdisplay = 1366, 1277 .hsync_start = 1366 + 136, 1278 .hsync_end = 1366 + 136 + 30, 1279 .htotal = 1366 + 136 + 30 + 60, 1280 .vdisplay = 768, 1281 .vsync_start = 768 + 8, 1282 .vsync_end = 768 + 8 + 12, 1283 .vtotal = 768 + 8 + 12 + 12, 1284 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1285 }; 1286 1287 static const struct panel_desc innolux_n116bca_ea1 = { 1288 .modes = &innolux_n116bca_ea1_mode, 1289 .num_modes = 1, 1290 .bpc = 6, 1291 .size = { 1292 .width = 256, 1293 .height = 144, 1294 }, 1295 .delay = { 1296 .hpd_absent = 200, 1297 .enable = 80, 1298 .disable = 50, 1299 .unprepare = 500, 1300 }, 1301 }; 1302 1303 /* 1304 * Datasheet specifies that at 60 Hz refresh rate: 1305 * - total horizontal time: { 1506, 1592, 1716 } 1306 * - total vertical time: { 788, 800, 868 } 1307 * 1308 * ...but doesn't go into exactly how that should be split into a front 1309 * porch, back porch, or sync length. For now we'll leave a single setting 1310 * here which allows a bit of tweaking of the pixel clock at the expense of 1311 * refresh rate. 1312 */ 1313 static const struct display_timing innolux_n116bge_timing = { 1314 .pixelclock = { 72600000, 76420000, 80240000 }, 1315 .hactive = { 1366, 1366, 1366 }, 1316 .hfront_porch = { 136, 136, 136 }, 1317 .hback_porch = { 60, 60, 60 }, 1318 .hsync_len = { 30, 30, 30 }, 1319 .vactive = { 768, 768, 768 }, 1320 .vfront_porch = { 8, 8, 8 }, 1321 .vback_porch = { 12, 12, 12 }, 1322 .vsync_len = { 12, 12, 12 }, 1323 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1324 }; 1325 1326 static const struct panel_desc innolux_n116bge = { 1327 .timings = &innolux_n116bge_timing, 1328 .num_timings = 1, 1329 .bpc = 6, 1330 .size = { 1331 .width = 256, 1332 .height = 144, 1333 }, 1334 }; 1335 1336 static const struct drm_display_mode innolux_n125hce_gn1_mode = { 1337 .clock = 162000, 1338 .hdisplay = 1920, 1339 .hsync_start = 1920 + 40, 1340 .hsync_end = 1920 + 40 + 40, 1341 .htotal = 1920 + 40 + 40 + 80, 1342 .vdisplay = 1080, 1343 .vsync_start = 1080 + 4, 1344 .vsync_end = 1080 + 4 + 4, 1345 .vtotal = 1080 + 4 + 4 + 24, 1346 }; 1347 1348 static const struct panel_desc innolux_n125hce_gn1 = { 1349 .modes = &innolux_n125hce_gn1_mode, 1350 .num_modes = 1, 1351 .bpc = 8, 1352 .size = { 1353 .width = 276, 1354 .height = 155, 1355 }, 1356 }; 1357 1358 static const struct drm_display_mode innolux_p120zdg_bf1_mode = { 1359 .clock = 206016, 1360 .hdisplay = 2160, 1361 .hsync_start = 2160 + 48, 1362 .hsync_end = 2160 + 48 + 32, 1363 .htotal = 2160 + 48 + 32 + 80, 1364 .vdisplay = 1440, 1365 .vsync_start = 1440 + 3, 1366 .vsync_end = 1440 + 3 + 10, 1367 .vtotal = 1440 + 3 + 10 + 27, 1368 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1369 }; 1370 1371 static const struct panel_desc innolux_p120zdg_bf1 = { 1372 .modes = &innolux_p120zdg_bf1_mode, 1373 .num_modes = 1, 1374 .bpc = 8, 1375 .size = { 1376 .width = 254, 1377 .height = 169, 1378 }, 1379 .delay = { 1380 .hpd_absent = 200, 1381 .unprepare = 500, 1382 }, 1383 }; 1384 1385 static const struct drm_display_mode ivo_m133nwf4_r0_mode = { 1386 .clock = 138778, 1387 .hdisplay = 1920, 1388 .hsync_start = 1920 + 24, 1389 .hsync_end = 1920 + 24 + 48, 1390 .htotal = 1920 + 24 + 48 + 88, 1391 .vdisplay = 1080, 1392 .vsync_start = 1080 + 3, 1393 .vsync_end = 1080 + 3 + 12, 1394 .vtotal = 1080 + 3 + 12 + 17, 1395 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1396 }; 1397 1398 static const struct panel_desc ivo_m133nwf4_r0 = { 1399 .modes = &ivo_m133nwf4_r0_mode, 1400 .num_modes = 1, 1401 .bpc = 8, 1402 .size = { 1403 .width = 294, 1404 .height = 165, 1405 }, 1406 .delay = { 1407 .hpd_absent = 200, 1408 .unprepare = 500, 1409 }, 1410 }; 1411 1412 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = { 1413 .clock = 81000, 1414 .hdisplay = 1366, 1415 .hsync_start = 1366 + 40, 1416 .hsync_end = 1366 + 40 + 32, 1417 .htotal = 1366 + 40 + 32 + 62, 1418 .vdisplay = 768, 1419 .vsync_start = 768 + 5, 1420 .vsync_end = 768 + 5 + 5, 1421 .vtotal = 768 + 5 + 5 + 122, 1422 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1423 }; 1424 1425 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = { 1426 .modes = &kingdisplay_kd116n21_30nv_a010_mode, 1427 .num_modes = 1, 1428 .bpc = 6, 1429 .size = { 1430 .width = 256, 1431 .height = 144, 1432 }, 1433 .delay = { 1434 .hpd_absent = 200, 1435 }, 1436 }; 1437 1438 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = { 1439 .clock = 200000, 1440 .hdisplay = 1536, 1441 .hsync_start = 1536 + 12, 1442 .hsync_end = 1536 + 12 + 16, 1443 .htotal = 1536 + 12 + 16 + 48, 1444 .vdisplay = 2048, 1445 .vsync_start = 2048 + 8, 1446 .vsync_end = 2048 + 8 + 4, 1447 .vtotal = 2048 + 8 + 4 + 8, 1448 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1449 }; 1450 1451 static const struct panel_desc lg_lp079qx1_sp0v = { 1452 .modes = &lg_lp079qx1_sp0v_mode, 1453 .num_modes = 1, 1454 .size = { 1455 .width = 129, 1456 .height = 171, 1457 }, 1458 }; 1459 1460 static const struct drm_display_mode lg_lp097qx1_spa1_mode = { 1461 .clock = 205210, 1462 .hdisplay = 2048, 1463 .hsync_start = 2048 + 150, 1464 .hsync_end = 2048 + 150 + 5, 1465 .htotal = 2048 + 150 + 5 + 5, 1466 .vdisplay = 1536, 1467 .vsync_start = 1536 + 3, 1468 .vsync_end = 1536 + 3 + 1, 1469 .vtotal = 1536 + 3 + 1 + 9, 1470 }; 1471 1472 static const struct panel_desc lg_lp097qx1_spa1 = { 1473 .modes = &lg_lp097qx1_spa1_mode, 1474 .num_modes = 1, 1475 .size = { 1476 .width = 208, 1477 .height = 147, 1478 }, 1479 }; 1480 1481 static const struct drm_display_mode lg_lp120up1_mode = { 1482 .clock = 162300, 1483 .hdisplay = 1920, 1484 .hsync_start = 1920 + 40, 1485 .hsync_end = 1920 + 40 + 40, 1486 .htotal = 1920 + 40 + 40 + 80, 1487 .vdisplay = 1280, 1488 .vsync_start = 1280 + 4, 1489 .vsync_end = 1280 + 4 + 4, 1490 .vtotal = 1280 + 4 + 4 + 12, 1491 }; 1492 1493 static const struct panel_desc lg_lp120up1 = { 1494 .modes = &lg_lp120up1_mode, 1495 .num_modes = 1, 1496 .bpc = 8, 1497 .size = { 1498 .width = 267, 1499 .height = 183, 1500 }, 1501 }; 1502 1503 static const struct drm_display_mode lg_lp129qe_mode = { 1504 .clock = 285250, 1505 .hdisplay = 2560, 1506 .hsync_start = 2560 + 48, 1507 .hsync_end = 2560 + 48 + 32, 1508 .htotal = 2560 + 48 + 32 + 80, 1509 .vdisplay = 1700, 1510 .vsync_start = 1700 + 3, 1511 .vsync_end = 1700 + 3 + 10, 1512 .vtotal = 1700 + 3 + 10 + 36, 1513 }; 1514 1515 static const struct panel_desc lg_lp129qe = { 1516 .modes = &lg_lp129qe_mode, 1517 .num_modes = 1, 1518 .bpc = 8, 1519 .size = { 1520 .width = 272, 1521 .height = 181, 1522 }, 1523 }; 1524 1525 static const struct drm_display_mode neweast_wjfh116008a_modes[] = { 1526 { 1527 .clock = 138500, 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 .clock = 110920, 1539 .hdisplay = 1920, 1540 .hsync_start = 1920 + 48, 1541 .hsync_end = 1920 + 48 + 32, 1542 .htotal = 1920 + 48 + 32 + 80, 1543 .vdisplay = 1080, 1544 .vsync_start = 1080 + 3, 1545 .vsync_end = 1080 + 3 + 5, 1546 .vtotal = 1080 + 3 + 5 + 23, 1547 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1548 } 1549 }; 1550 1551 static const struct panel_desc neweast_wjfh116008a = { 1552 .modes = neweast_wjfh116008a_modes, 1553 .num_modes = 2, 1554 .bpc = 6, 1555 .size = { 1556 .width = 260, 1557 .height = 150, 1558 }, 1559 .delay = { 1560 .hpd_reliable = 110, 1561 .enable = 20, 1562 .unprepare = 500, 1563 }, 1564 }; 1565 1566 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = { 1567 .clock = 271560, 1568 .hdisplay = 2560, 1569 .hsync_start = 2560 + 48, 1570 .hsync_end = 2560 + 48 + 32, 1571 .htotal = 2560 + 48 + 32 + 80, 1572 .vdisplay = 1600, 1573 .vsync_start = 1600 + 2, 1574 .vsync_end = 1600 + 2 + 5, 1575 .vtotal = 1600 + 2 + 5 + 57, 1576 }; 1577 1578 static const struct panel_desc samsung_lsn122dl01_c01 = { 1579 .modes = &samsung_lsn122dl01_c01_mode, 1580 .num_modes = 1, 1581 .size = { 1582 .width = 263, 1583 .height = 164, 1584 }, 1585 }; 1586 1587 static const struct drm_display_mode samsung_ltn140at29_301_mode = { 1588 .clock = 76300, 1589 .hdisplay = 1366, 1590 .hsync_start = 1366 + 64, 1591 .hsync_end = 1366 + 64 + 48, 1592 .htotal = 1366 + 64 + 48 + 128, 1593 .vdisplay = 768, 1594 .vsync_start = 768 + 2, 1595 .vsync_end = 768 + 2 + 5, 1596 .vtotal = 768 + 2 + 5 + 17, 1597 }; 1598 1599 static const struct panel_desc samsung_ltn140at29_301 = { 1600 .modes = &samsung_ltn140at29_301_mode, 1601 .num_modes = 1, 1602 .bpc = 6, 1603 .size = { 1604 .width = 320, 1605 .height = 187, 1606 }, 1607 }; 1608 1609 static const struct drm_display_mode sharp_ld_d5116z01b_mode = { 1610 .clock = 168480, 1611 .hdisplay = 1920, 1612 .hsync_start = 1920 + 48, 1613 .hsync_end = 1920 + 48 + 32, 1614 .htotal = 1920 + 48 + 32 + 80, 1615 .vdisplay = 1280, 1616 .vsync_start = 1280 + 3, 1617 .vsync_end = 1280 + 3 + 10, 1618 .vtotal = 1280 + 3 + 10 + 57, 1619 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1620 }; 1621 1622 static const struct panel_desc sharp_ld_d5116z01b = { 1623 .modes = &sharp_ld_d5116z01b_mode, 1624 .num_modes = 1, 1625 .bpc = 8, 1626 .size = { 1627 .width = 260, 1628 .height = 120, 1629 }, 1630 }; 1631 1632 static const struct display_timing sharp_lq123p1jx31_timing = { 1633 .pixelclock = { 252750000, 252750000, 266604720 }, 1634 .hactive = { 2400, 2400, 2400 }, 1635 .hfront_porch = { 48, 48, 48 }, 1636 .hback_porch = { 80, 80, 84 }, 1637 .hsync_len = { 32, 32, 32 }, 1638 .vactive = { 1600, 1600, 1600 }, 1639 .vfront_porch = { 3, 3, 3 }, 1640 .vback_porch = { 33, 33, 120 }, 1641 .vsync_len = { 10, 10, 10 }, 1642 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1643 }; 1644 1645 static const struct panel_desc sharp_lq123p1jx31 = { 1646 .timings = &sharp_lq123p1jx31_timing, 1647 .num_timings = 1, 1648 .bpc = 8, 1649 .size = { 1650 .width = 259, 1651 .height = 173, 1652 }, 1653 .delay = { 1654 .hpd_reliable = 110, 1655 .enable = 50, 1656 .unprepare = 550, 1657 }, 1658 }; 1659 1660 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = { 1661 { 1662 .clock = 346500, 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 .clock = 144370, 1674 .hdisplay = 1920, 1675 .hsync_start = 1920 + 48, 1676 .hsync_end = 1920 + 48 + 32, 1677 .htotal = 1920 + 48 + 32 + 80, 1678 .vdisplay = 1080, 1679 .vsync_start = 1080 + 3, 1680 .vsync_end = 1080 + 3 + 5, 1681 .vtotal = 1080 + 3 + 5 + 69, 1682 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1683 }, 1684 }; 1685 1686 static const struct panel_desc sharp_lq140m1jw46 = { 1687 .modes = sharp_lq140m1jw46_mode, 1688 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode), 1689 .bpc = 8, 1690 .size = { 1691 .width = 309, 1692 .height = 174, 1693 }, 1694 .delay = { 1695 .hpd_absent = 80, 1696 .enable = 50, 1697 .unprepare = 500, 1698 }, 1699 }; 1700 1701 static const struct drm_display_mode starry_kr122ea0sra_mode = { 1702 .clock = 147000, 1703 .hdisplay = 1920, 1704 .hsync_start = 1920 + 16, 1705 .hsync_end = 1920 + 16 + 16, 1706 .htotal = 1920 + 16 + 16 + 32, 1707 .vdisplay = 1200, 1708 .vsync_start = 1200 + 15, 1709 .vsync_end = 1200 + 15 + 2, 1710 .vtotal = 1200 + 15 + 2 + 18, 1711 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1712 }; 1713 1714 static const struct panel_desc starry_kr122ea0sra = { 1715 .modes = &starry_kr122ea0sra_mode, 1716 .num_modes = 1, 1717 .size = { 1718 .width = 263, 1719 .height = 164, 1720 }, 1721 .delay = { 1722 /* TODO: should be hpd-absent and no-hpd should be set? */ 1723 .hpd_reliable = 10 + 200, 1724 .enable = 50, 1725 .unprepare = 10 + 500, 1726 }, 1727 }; 1728 1729 static const struct of_device_id platform_of_match[] = { 1730 { 1731 /* Must be first */ 1732 .compatible = "edp-panel", 1733 }, { 1734 .compatible = "auo,b101ean01", 1735 .data = &auo_b101ean01, 1736 }, { 1737 .compatible = "auo,b116xa01", 1738 .data = &auo_b116xak01, 1739 }, { 1740 .compatible = "auo,b133han05", 1741 .data = &auo_b133han05, 1742 }, { 1743 .compatible = "auo,b133htn01", 1744 .data = &auo_b133htn01, 1745 }, { 1746 .compatible = "auo,b133xtn01", 1747 .data = &auo_b133xtn01, 1748 }, { 1749 .compatible = "auo,b140han06", 1750 .data = &auo_b140han06, 1751 }, { 1752 .compatible = "boe,nv101wxmn51", 1753 .data = &boe_nv101wxmn51, 1754 }, { 1755 .compatible = "boe,nv110wtm-n61", 1756 .data = &boe_nv110wtm_n61, 1757 }, { 1758 .compatible = "boe,nv133fhm-n61", 1759 .data = &boe_nv133fhm_n61, 1760 }, { 1761 .compatible = "boe,nv133fhm-n62", 1762 .data = &boe_nv133fhm_n61, 1763 }, { 1764 .compatible = "boe,nv140fhmn49", 1765 .data = &boe_nv140fhmn49, 1766 }, { 1767 .compatible = "innolux,n116bca-ea1", 1768 .data = &innolux_n116bca_ea1, 1769 }, { 1770 .compatible = "innolux,n116bge", 1771 .data = &innolux_n116bge, 1772 }, { 1773 .compatible = "innolux,n125hce-gn1", 1774 .data = &innolux_n125hce_gn1, 1775 }, { 1776 .compatible = "innolux,p120zdg-bf1", 1777 .data = &innolux_p120zdg_bf1, 1778 }, { 1779 .compatible = "ivo,m133nwf4-r0", 1780 .data = &ivo_m133nwf4_r0, 1781 }, { 1782 .compatible = "kingdisplay,kd116n21-30nv-a010", 1783 .data = &kingdisplay_kd116n21_30nv_a010, 1784 }, { 1785 .compatible = "lg,lp079qx1-sp0v", 1786 .data = &lg_lp079qx1_sp0v, 1787 }, { 1788 .compatible = "lg,lp097qx1-spa1", 1789 .data = &lg_lp097qx1_spa1, 1790 }, { 1791 .compatible = "lg,lp120up1", 1792 .data = &lg_lp120up1, 1793 }, { 1794 .compatible = "lg,lp129qe", 1795 .data = &lg_lp129qe, 1796 }, { 1797 .compatible = "neweast,wjfh116008a", 1798 .data = &neweast_wjfh116008a, 1799 }, { 1800 .compatible = "samsung,lsn122dl01-c01", 1801 .data = &samsung_lsn122dl01_c01, 1802 }, { 1803 .compatible = "samsung,ltn140at29-301", 1804 .data = &samsung_ltn140at29_301, 1805 }, { 1806 .compatible = "sharp,ld-d5116z01b", 1807 .data = &sharp_ld_d5116z01b, 1808 }, { 1809 .compatible = "sharp,lq123p1jx31", 1810 .data = &sharp_lq123p1jx31, 1811 }, { 1812 .compatible = "sharp,lq140m1jw46", 1813 .data = &sharp_lq140m1jw46, 1814 }, { 1815 .compatible = "starry,kr122ea0sra", 1816 .data = &starry_kr122ea0sra, 1817 }, { 1818 /* sentinel */ 1819 } 1820 }; 1821 MODULE_DEVICE_TABLE(of, platform_of_match); 1822 1823 static const struct panel_delay delay_200_500_p2e80 = { 1824 .hpd_absent = 200, 1825 .unprepare = 500, 1826 .prepare_to_enable = 80, 1827 }; 1828 1829 static const struct panel_delay delay_200_500_p2e100 = { 1830 .hpd_absent = 200, 1831 .unprepare = 500, 1832 .prepare_to_enable = 100, 1833 }; 1834 1835 static const struct panel_delay delay_200_500_e50 = { 1836 .hpd_absent = 200, 1837 .unprepare = 500, 1838 .enable = 50, 1839 }; 1840 1841 static const struct panel_delay delay_200_500_e80_d50 = { 1842 .hpd_absent = 200, 1843 .unprepare = 500, 1844 .enable = 80, 1845 .disable = 50, 1846 }; 1847 1848 static const struct panel_delay delay_100_500_e200 = { 1849 .hpd_absent = 100, 1850 .unprepare = 500, 1851 .enable = 200, 1852 }; 1853 1854 static const struct panel_delay delay_200_500_e200 = { 1855 .hpd_absent = 200, 1856 .unprepare = 500, 1857 .enable = 200, 1858 }; 1859 1860 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \ 1861 { \ 1862 .name = _name, \ 1863 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1864 product_id), \ 1865 .delay = _delay \ 1866 } 1867 1868 #define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \ 1869 { \ 1870 .name = _name, \ 1871 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1872 product_id), \ 1873 .delay = _delay, \ 1874 .override_edid_mode = _mode \ 1875 } 1876 1877 /* 1878 * This table is used to figure out power sequencing delays for panels that 1879 * are detected by EDID. Entries here may point to entries in the 1880 * platform_of_match table (if a panel is listed in both places). 1881 * 1882 * Sort first by vendor, then by product ID. 1883 */ 1884 static const struct edp_panel_entry edp_panels[] = { 1885 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), 1886 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"), 1887 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), 1888 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"), 1889 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"), 1890 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0"), 1891 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"), 1892 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"), 1893 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"), 1894 1895 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"), 1896 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"), 1897 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"), 1898 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"), 1899 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"), 1900 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"), 1901 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"), 1902 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"), 1903 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"), 1904 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"), 1905 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"), 1906 1907 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"), 1908 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), 1909 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"), 1910 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"), 1911 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"), 1912 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"), 1913 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"), 1914 1915 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), 1916 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"), 1917 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"), 1918 1919 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), 1920 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), 1921 1922 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"), 1923 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"), 1924 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"), 1925 1926 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"), 1927 1928 { /* sentinal */ } 1929 }; 1930 1931 static const struct edp_panel_entry *find_edp_panel(u32 panel_id) 1932 { 1933 const struct edp_panel_entry *panel; 1934 1935 if (!panel_id) 1936 return NULL; 1937 1938 for (panel = edp_panels; panel->panel_id; panel++) 1939 if (panel->panel_id == panel_id) 1940 return panel; 1941 1942 return NULL; 1943 } 1944 1945 static int panel_edp_platform_probe(struct platform_device *pdev) 1946 { 1947 const struct of_device_id *id; 1948 1949 /* Skip one since "edp-panel" is only supported on DP AUX bus */ 1950 id = of_match_node(platform_of_match + 1, pdev->dev.of_node); 1951 if (!id) 1952 return -ENODEV; 1953 1954 return panel_edp_probe(&pdev->dev, id->data, NULL); 1955 } 1956 1957 static void panel_edp_platform_remove(struct platform_device *pdev) 1958 { 1959 panel_edp_remove(&pdev->dev); 1960 } 1961 1962 static void panel_edp_platform_shutdown(struct platform_device *pdev) 1963 { 1964 panel_edp_shutdown(&pdev->dev); 1965 } 1966 1967 static const struct dev_pm_ops panel_edp_pm_ops = { 1968 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL) 1969 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1970 pm_runtime_force_resume) 1971 }; 1972 1973 static struct platform_driver panel_edp_platform_driver = { 1974 .driver = { 1975 .name = "panel-edp", 1976 .of_match_table = platform_of_match, 1977 .pm = &panel_edp_pm_ops, 1978 }, 1979 .probe = panel_edp_platform_probe, 1980 .remove_new = panel_edp_platform_remove, 1981 .shutdown = panel_edp_platform_shutdown, 1982 }; 1983 1984 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep) 1985 { 1986 const struct of_device_id *id; 1987 1988 id = of_match_node(platform_of_match, aux_ep->dev.of_node); 1989 if (!id) 1990 return -ENODEV; 1991 1992 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux); 1993 } 1994 1995 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep) 1996 { 1997 panel_edp_remove(&aux_ep->dev); 1998 } 1999 2000 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep) 2001 { 2002 panel_edp_shutdown(&aux_ep->dev); 2003 } 2004 2005 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = { 2006 .driver = { 2007 .name = "panel-simple-dp-aux", 2008 .of_match_table = platform_of_match, /* Same as platform one! */ 2009 .pm = &panel_edp_pm_ops, 2010 }, 2011 .probe = panel_edp_dp_aux_ep_probe, 2012 .remove = panel_edp_dp_aux_ep_remove, 2013 .shutdown = panel_edp_dp_aux_ep_shutdown, 2014 }; 2015 2016 static int __init panel_edp_init(void) 2017 { 2018 int err; 2019 2020 err = platform_driver_register(&panel_edp_platform_driver); 2021 if (err < 0) 2022 return err; 2023 2024 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver); 2025 if (err < 0) 2026 goto err_did_platform_register; 2027 2028 return 0; 2029 2030 err_did_platform_register: 2031 platform_driver_unregister(&panel_edp_platform_driver); 2032 2033 return err; 2034 } 2035 module_init(panel_edp_init); 2036 2037 static void __exit panel_edp_exit(void) 2038 { 2039 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver); 2040 platform_driver_unregister(&panel_edp_platform_driver); 2041 } 2042 module_exit(panel_edp_exit); 2043 2044 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 2045 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels"); 2046 MODULE_LICENSE("GPL and additional rights"); 2047