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 gpiod_set_value_cansleep(p->enable_gpio, 0); 401 regulator_disable(p->supply); 402 p->unprepared_time = ktime_get_boottime(); 403 404 return 0; 405 } 406 407 static int panel_edp_unprepare(struct drm_panel *panel) 408 { 409 struct panel_edp *p = to_panel_edp(panel); 410 int ret; 411 412 /* Unpreparing when already unprepared is a no-op */ 413 if (!p->prepared) 414 return 0; 415 416 pm_runtime_mark_last_busy(panel->dev); 417 ret = pm_runtime_put_autosuspend(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); 457 458 delay = p->desc->delay.hpd_reliable; 459 if (p->no_hpd) 460 delay = max(delay, p->desc->delay.hpd_absent); 461 if (delay) 462 msleep(delay); 463 464 if (panel_edp_can_read_hpd(p)) { 465 if (p->desc->delay.hpd_absent) 466 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL; 467 else 468 hpd_wait_us = 2000000; 469 470 if (p->hpd_gpio) { 471 err = readx_poll_timeout(gpiod_get_value_cansleep, 472 p->hpd_gpio, hpd_asserted, 473 hpd_asserted, 1000, hpd_wait_us); 474 if (hpd_asserted < 0) 475 err = hpd_asserted; 476 } else { 477 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us); 478 } 479 480 if (err) { 481 if (err != -ETIMEDOUT) 482 dev_err(dev, 483 "error waiting for hpd GPIO: %d\n", err); 484 goto error; 485 } 486 } 487 488 p->prepared_time = ktime_get_boottime(); 489 490 return 0; 491 492 error: 493 gpiod_set_value_cansleep(p->enable_gpio, 0); 494 regulator_disable(p->supply); 495 p->unprepared_time = ktime_get_boottime(); 496 497 return err; 498 } 499 500 /* 501 * Some panels simply don't always come up and need to be power cycled to 502 * work properly. We'll allow for a handful of retries. 503 */ 504 #define MAX_PANEL_PREPARE_TRIES 5 505 506 static int panel_edp_resume(struct device *dev) 507 { 508 struct panel_edp *p = dev_get_drvdata(dev); 509 int ret; 510 int try; 511 512 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) { 513 ret = panel_edp_prepare_once(p); 514 if (ret != -ETIMEDOUT) 515 break; 516 } 517 518 if (ret == -ETIMEDOUT) 519 dev_err(dev, "Prepare timeout after %d tries\n", try); 520 else if (try) 521 dev_warn(dev, "Prepare needed %d retries\n", try); 522 523 return ret; 524 } 525 526 static int panel_edp_prepare(struct drm_panel *panel) 527 { 528 struct panel_edp *p = to_panel_edp(panel); 529 int ret; 530 531 /* Preparing when already prepared is a no-op */ 532 if (p->prepared) 533 return 0; 534 535 ret = pm_runtime_get_sync(panel->dev); 536 if (ret < 0) { 537 pm_runtime_put_autosuspend(panel->dev); 538 return ret; 539 } 540 541 p->prepared = true; 542 543 return 0; 544 } 545 546 static int panel_edp_enable(struct drm_panel *panel) 547 { 548 struct panel_edp *p = to_panel_edp(panel); 549 unsigned int delay; 550 551 if (p->enabled) 552 return 0; 553 554 delay = p->desc->delay.enable; 555 556 /* 557 * If there is a "prepare_to_enable" delay then that's supposed to be 558 * the delay from HPD going high until we can turn the backlight on. 559 * However, we can only count this if HPD is readable by the panel 560 * driver. 561 * 562 * If we aren't handling the HPD pin ourselves then the best we 563 * can do is assume that HPD went high immediately before we were 564 * called (and link training took zero time). Note that "no-hpd" 565 * actually counts as handling HPD ourselves since we're doing the 566 * worst case delay (in prepare) ourselves. 567 * 568 * NOTE: if we ever end up in this "if" statement then we're 569 * guaranteed that the panel_edp_wait() call below will do no delay. 570 * It already handles that case, though, so we don't need any special 571 * code for it. 572 */ 573 if (p->desc->delay.prepare_to_enable && 574 !panel_edp_can_read_hpd(p) && !p->no_hpd) 575 delay = max(delay, p->desc->delay.prepare_to_enable); 576 577 if (delay) 578 msleep(delay); 579 580 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable); 581 582 p->enabled = true; 583 584 return 0; 585 } 586 587 static int panel_edp_get_modes(struct drm_panel *panel, 588 struct drm_connector *connector) 589 { 590 struct panel_edp *p = to_panel_edp(panel); 591 int num = 0; 592 bool has_override_edid_mode = p->detected_panel && 593 p->detected_panel != ERR_PTR(-EINVAL) && 594 p->detected_panel->override_edid_mode; 595 596 /* probe EDID if a DDC bus is available */ 597 if (p->ddc) { 598 pm_runtime_get_sync(panel->dev); 599 600 if (!p->edid) 601 p->edid = drm_get_edid(connector, p->ddc); 602 if (p->edid) { 603 if (has_override_edid_mode) { 604 /* 605 * override_edid_mode is specified. Use 606 * override_edid_mode instead of from edid. 607 */ 608 num += panel_edp_override_edid_mode(p, connector, 609 p->detected_panel->override_edid_mode); 610 } else { 611 num += drm_add_edid_modes(connector, p->edid); 612 } 613 } 614 615 pm_runtime_mark_last_busy(panel->dev); 616 pm_runtime_put_autosuspend(panel->dev); 617 } 618 619 /* 620 * Add hard-coded panel modes. Don't call this if there are no timings 621 * and no modes (the generic edp-panel case) because it will clobber 622 * the display_info that was already set by drm_add_edid_modes(). 623 */ 624 if (p->desc->num_timings || p->desc->num_modes) 625 num += panel_edp_get_non_edid_modes(p, connector); 626 else if (!num) 627 dev_warn(p->base.dev, "No display modes\n"); 628 629 /* 630 * TODO: Remove once all drm drivers call 631 * drm_connector_set_orientation_from_panel() 632 */ 633 drm_connector_set_panel_orientation(connector, p->orientation); 634 635 return num; 636 } 637 638 static int panel_edp_get_timings(struct drm_panel *panel, 639 unsigned int num_timings, 640 struct display_timing *timings) 641 { 642 struct panel_edp *p = to_panel_edp(panel); 643 unsigned int i; 644 645 if (p->desc->num_timings < num_timings) 646 num_timings = p->desc->num_timings; 647 648 if (timings) 649 for (i = 0; i < num_timings; i++) 650 timings[i] = p->desc->timings[i]; 651 652 return p->desc->num_timings; 653 } 654 655 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel) 656 { 657 struct panel_edp *p = to_panel_edp(panel); 658 659 return p->orientation; 660 } 661 662 static int detected_panel_show(struct seq_file *s, void *data) 663 { 664 struct drm_panel *panel = s->private; 665 struct panel_edp *p = to_panel_edp(panel); 666 667 if (IS_ERR(p->detected_panel)) 668 seq_puts(s, "UNKNOWN\n"); 669 else if (!p->detected_panel) 670 seq_puts(s, "HARDCODED\n"); 671 else 672 seq_printf(s, "%s\n", p->detected_panel->name); 673 674 return 0; 675 } 676 677 DEFINE_SHOW_ATTRIBUTE(detected_panel); 678 679 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root) 680 { 681 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops); 682 } 683 684 static const struct drm_panel_funcs panel_edp_funcs = { 685 .disable = panel_edp_disable, 686 .unprepare = panel_edp_unprepare, 687 .prepare = panel_edp_prepare, 688 .enable = panel_edp_enable, 689 .get_modes = panel_edp_get_modes, 690 .get_orientation = panel_edp_get_orientation, 691 .get_timings = panel_edp_get_timings, 692 .debugfs_init = panel_edp_debugfs_init, 693 }; 694 695 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \ 696 (to_check->field.typ >= bounds->field.min && \ 697 to_check->field.typ <= bounds->field.max) 698 static void panel_edp_parse_panel_timing_node(struct device *dev, 699 struct panel_edp *panel, 700 const struct display_timing *ot) 701 { 702 const struct panel_desc *desc = panel->desc; 703 struct videomode vm; 704 unsigned int i; 705 706 if (WARN_ON(desc->num_modes)) { 707 dev_err(dev, "Reject override mode: panel has a fixed mode\n"); 708 return; 709 } 710 if (WARN_ON(!desc->num_timings)) { 711 dev_err(dev, "Reject override mode: no timings specified\n"); 712 return; 713 } 714 715 for (i = 0; i < panel->desc->num_timings; i++) { 716 const struct display_timing *dt = &panel->desc->timings[i]; 717 718 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) || 719 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) || 720 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) || 721 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) || 722 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) || 723 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) || 724 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) || 725 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len)) 726 continue; 727 728 if (ot->flags != dt->flags) 729 continue; 730 731 videomode_from_timing(ot, &vm); 732 drm_display_mode_from_videomode(&vm, &panel->override_mode); 733 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER | 734 DRM_MODE_TYPE_PREFERRED; 735 break; 736 } 737 738 if (WARN_ON(!panel->override_mode.type)) 739 dev_err(dev, "Reject override mode: No display_timing found\n"); 740 } 741 742 static const struct edp_panel_entry *find_edp_panel(u32 panel_id); 743 744 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel) 745 { 746 struct panel_desc *desc; 747 u32 panel_id; 748 char vend[4]; 749 u16 product_id; 750 u32 reliable_ms = 0; 751 u32 absent_ms = 0; 752 int ret; 753 754 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); 755 if (!desc) 756 return -ENOMEM; 757 panel->desc = desc; 758 759 /* 760 * Read the dts properties for the initial probe. These are used by 761 * the runtime resume code which will get called by the 762 * pm_runtime_get_sync() call below. 763 */ 764 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms); 765 desc->delay.hpd_reliable = reliable_ms; 766 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms); 767 desc->delay.hpd_absent = absent_ms; 768 769 /* Power the panel on so we can read the EDID */ 770 ret = pm_runtime_get_sync(dev); 771 if (ret < 0) { 772 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret); 773 goto exit; 774 } 775 776 panel_id = drm_edid_get_panel_id(panel->ddc); 777 if (!panel_id) { 778 dev_err(dev, "Couldn't identify panel via EDID\n"); 779 ret = -EIO; 780 goto exit; 781 } 782 drm_edid_decode_panel_id(panel_id, vend, &product_id); 783 784 panel->detected_panel = find_edp_panel(panel_id); 785 786 /* 787 * We're using non-optimized timings and want it really obvious that 788 * someone needs to add an entry to the table, so we'll do a WARN_ON 789 * splat. 790 */ 791 if (WARN_ON(!panel->detected_panel)) { 792 dev_warn(dev, 793 "Unknown panel %s %#06x, using conservative timings\n", 794 vend, product_id); 795 796 /* 797 * It's highly likely that the panel will work if we use very 798 * conservative timings, so let's do that. We already know that 799 * the HPD-related delays must have worked since we got this 800 * far, so we really just need the "unprepare" / "enable" 801 * delays. We don't need "prepare_to_enable" since that 802 * overlaps the "enable" delay anyway. 803 * 804 * Nearly all panels have a "unprepare" delay of 500 ms though 805 * there are a few with 1000. Let's stick 2000 in just to be 806 * super conservative. 807 * 808 * An "enable" delay of 80 ms seems the most common, but we'll 809 * throw in 200 ms to be safe. 810 */ 811 desc->delay.unprepare = 2000; 812 desc->delay.enable = 200; 813 814 panel->detected_panel = ERR_PTR(-EINVAL); 815 } else { 816 dev_info(dev, "Detected %s %s (%#06x)\n", 817 vend, panel->detected_panel->name, product_id); 818 819 /* Update the delay; everything else comes from EDID */ 820 desc->delay = *panel->detected_panel->delay; 821 } 822 823 ret = 0; 824 exit: 825 pm_runtime_mark_last_busy(dev); 826 pm_runtime_put_autosuspend(dev); 827 828 return ret; 829 } 830 831 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc, 832 struct drm_dp_aux *aux) 833 { 834 struct panel_edp *panel; 835 struct display_timing dt; 836 struct device_node *ddc; 837 int err; 838 839 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); 840 if (!panel) 841 return -ENOMEM; 842 843 panel->enabled = false; 844 panel->prepared_time = 0; 845 panel->desc = desc; 846 panel->aux = aux; 847 848 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd"); 849 if (!panel->no_hpd) { 850 err = panel_edp_get_hpd_gpio(dev, panel); 851 if (err) 852 return err; 853 } 854 855 panel->supply = devm_regulator_get(dev, "power"); 856 if (IS_ERR(panel->supply)) 857 return PTR_ERR(panel->supply); 858 859 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", 860 GPIOD_OUT_LOW); 861 if (IS_ERR(panel->enable_gpio)) 862 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio), 863 "failed to request GPIO\n"); 864 865 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); 866 if (err) { 867 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); 868 return err; 869 } 870 871 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); 872 if (ddc) { 873 panel->ddc = of_find_i2c_adapter_by_node(ddc); 874 of_node_put(ddc); 875 876 if (!panel->ddc) 877 return -EPROBE_DEFER; 878 } else if (aux) { 879 panel->ddc = &aux->ddc; 880 } 881 882 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt)) 883 panel_edp_parse_panel_timing_node(dev, panel, &dt); 884 885 dev_set_drvdata(dev, panel); 886 887 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP); 888 889 err = drm_panel_of_backlight(&panel->base); 890 if (err) 891 goto err_finished_ddc_init; 892 893 /* 894 * We use runtime PM for prepare / unprepare since those power the panel 895 * on and off and those can be very slow operations. This is important 896 * to optimize powering the panel on briefly to read the EDID before 897 * fully enabling the panel. 898 */ 899 pm_runtime_enable(dev); 900 pm_runtime_set_autosuspend_delay(dev, 1000); 901 pm_runtime_use_autosuspend(dev); 902 903 if (of_device_is_compatible(dev->of_node, "edp-panel")) { 904 err = generic_edp_panel_probe(dev, panel); 905 if (err) { 906 dev_err_probe(dev, err, 907 "Couldn't detect panel nor find a fallback\n"); 908 goto err_finished_pm_runtime; 909 } 910 /* generic_edp_panel_probe() replaces desc in the panel */ 911 desc = panel->desc; 912 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) { 913 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc); 914 } 915 916 if (!panel->base.backlight && panel->aux) { 917 pm_runtime_get_sync(dev); 918 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); 919 pm_runtime_mark_last_busy(dev); 920 pm_runtime_put_autosuspend(dev); 921 if (err) 922 goto err_finished_pm_runtime; 923 } 924 925 drm_panel_add(&panel->base); 926 927 return 0; 928 929 err_finished_pm_runtime: 930 pm_runtime_dont_use_autosuspend(dev); 931 pm_runtime_disable(dev); 932 err_finished_ddc_init: 933 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 934 put_device(&panel->ddc->dev); 935 936 return err; 937 } 938 939 static void panel_edp_remove(struct device *dev) 940 { 941 struct panel_edp *panel = dev_get_drvdata(dev); 942 943 drm_panel_remove(&panel->base); 944 drm_panel_disable(&panel->base); 945 drm_panel_unprepare(&panel->base); 946 947 pm_runtime_dont_use_autosuspend(dev); 948 pm_runtime_disable(dev); 949 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc)) 950 put_device(&panel->ddc->dev); 951 952 kfree(panel->edid); 953 panel->edid = NULL; 954 } 955 956 static void panel_edp_shutdown(struct device *dev) 957 { 958 struct panel_edp *panel = dev_get_drvdata(dev); 959 960 drm_panel_disable(&panel->base); 961 drm_panel_unprepare(&panel->base); 962 } 963 964 static const struct display_timing auo_b101ean01_timing = { 965 .pixelclock = { 65300000, 72500000, 75000000 }, 966 .hactive = { 1280, 1280, 1280 }, 967 .hfront_porch = { 18, 119, 119 }, 968 .hback_porch = { 21, 21, 21 }, 969 .hsync_len = { 32, 32, 32 }, 970 .vactive = { 800, 800, 800 }, 971 .vfront_porch = { 4, 4, 4 }, 972 .vback_porch = { 8, 8, 8 }, 973 .vsync_len = { 18, 20, 20 }, 974 }; 975 976 static const struct panel_desc auo_b101ean01 = { 977 .timings = &auo_b101ean01_timing, 978 .num_timings = 1, 979 .bpc = 6, 980 .size = { 981 .width = 217, 982 .height = 136, 983 }, 984 }; 985 986 static const struct drm_display_mode auo_b116xak01_mode = { 987 .clock = 69300, 988 .hdisplay = 1366, 989 .hsync_start = 1366 + 48, 990 .hsync_end = 1366 + 48 + 32, 991 .htotal = 1366 + 48 + 32 + 10, 992 .vdisplay = 768, 993 .vsync_start = 768 + 4, 994 .vsync_end = 768 + 4 + 6, 995 .vtotal = 768 + 4 + 6 + 15, 996 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 997 }; 998 999 static const struct panel_desc auo_b116xak01 = { 1000 .modes = &auo_b116xak01_mode, 1001 .num_modes = 1, 1002 .bpc = 6, 1003 .size = { 1004 .width = 256, 1005 .height = 144, 1006 }, 1007 .delay = { 1008 .hpd_absent = 200, 1009 .unprepare = 500, 1010 .enable = 50, 1011 }, 1012 }; 1013 1014 static const struct drm_display_mode auo_b133han05_mode = { 1015 .clock = 142600, 1016 .hdisplay = 1920, 1017 .hsync_start = 1920 + 58, 1018 .hsync_end = 1920 + 58 + 42, 1019 .htotal = 1920 + 58 + 42 + 60, 1020 .vdisplay = 1080, 1021 .vsync_start = 1080 + 3, 1022 .vsync_end = 1080 + 3 + 5, 1023 .vtotal = 1080 + 3 + 5 + 54, 1024 }; 1025 1026 static const struct panel_desc auo_b133han05 = { 1027 .modes = &auo_b133han05_mode, 1028 .num_modes = 1, 1029 .bpc = 8, 1030 .size = { 1031 .width = 293, 1032 .height = 165, 1033 }, 1034 .delay = { 1035 .hpd_reliable = 100, 1036 .enable = 20, 1037 .unprepare = 50, 1038 }, 1039 }; 1040 1041 static const struct drm_display_mode auo_b133htn01_mode = { 1042 .clock = 150660, 1043 .hdisplay = 1920, 1044 .hsync_start = 1920 + 172, 1045 .hsync_end = 1920 + 172 + 80, 1046 .htotal = 1920 + 172 + 80 + 60, 1047 .vdisplay = 1080, 1048 .vsync_start = 1080 + 25, 1049 .vsync_end = 1080 + 25 + 10, 1050 .vtotal = 1080 + 25 + 10 + 10, 1051 }; 1052 1053 static const struct panel_desc auo_b133htn01 = { 1054 .modes = &auo_b133htn01_mode, 1055 .num_modes = 1, 1056 .bpc = 6, 1057 .size = { 1058 .width = 293, 1059 .height = 165, 1060 }, 1061 .delay = { 1062 .hpd_reliable = 105, 1063 .enable = 20, 1064 .unprepare = 50, 1065 }, 1066 }; 1067 1068 static const struct drm_display_mode auo_b133xtn01_mode = { 1069 .clock = 69500, 1070 .hdisplay = 1366, 1071 .hsync_start = 1366 + 48, 1072 .hsync_end = 1366 + 48 + 32, 1073 .htotal = 1366 + 48 + 32 + 20, 1074 .vdisplay = 768, 1075 .vsync_start = 768 + 3, 1076 .vsync_end = 768 + 3 + 6, 1077 .vtotal = 768 + 3 + 6 + 13, 1078 }; 1079 1080 static const struct panel_desc auo_b133xtn01 = { 1081 .modes = &auo_b133xtn01_mode, 1082 .num_modes = 1, 1083 .bpc = 6, 1084 .size = { 1085 .width = 293, 1086 .height = 165, 1087 }, 1088 }; 1089 1090 static const struct drm_display_mode auo_b140han06_mode = { 1091 .clock = 141000, 1092 .hdisplay = 1920, 1093 .hsync_start = 1920 + 16, 1094 .hsync_end = 1920 + 16 + 16, 1095 .htotal = 1920 + 16 + 16 + 152, 1096 .vdisplay = 1080, 1097 .vsync_start = 1080 + 3, 1098 .vsync_end = 1080 + 3 + 14, 1099 .vtotal = 1080 + 3 + 14 + 19, 1100 }; 1101 1102 static const struct panel_desc auo_b140han06 = { 1103 .modes = &auo_b140han06_mode, 1104 .num_modes = 1, 1105 .bpc = 8, 1106 .size = { 1107 .width = 309, 1108 .height = 174, 1109 }, 1110 .delay = { 1111 .hpd_reliable = 100, 1112 .enable = 20, 1113 .unprepare = 50, 1114 }, 1115 }; 1116 1117 static const struct drm_display_mode boe_nv101wxmn51_modes[] = { 1118 { 1119 .clock = 71900, 1120 .hdisplay = 1280, 1121 .hsync_start = 1280 + 48, 1122 .hsync_end = 1280 + 48 + 32, 1123 .htotal = 1280 + 48 + 32 + 80, 1124 .vdisplay = 800, 1125 .vsync_start = 800 + 3, 1126 .vsync_end = 800 + 3 + 5, 1127 .vtotal = 800 + 3 + 5 + 24, 1128 }, 1129 { 1130 .clock = 57500, 1131 .hdisplay = 1280, 1132 .hsync_start = 1280 + 48, 1133 .hsync_end = 1280 + 48 + 32, 1134 .htotal = 1280 + 48 + 32 + 80, 1135 .vdisplay = 800, 1136 .vsync_start = 800 + 3, 1137 .vsync_end = 800 + 3 + 5, 1138 .vtotal = 800 + 3 + 5 + 24, 1139 }, 1140 }; 1141 1142 static const struct panel_desc boe_nv101wxmn51 = { 1143 .modes = boe_nv101wxmn51_modes, 1144 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes), 1145 .bpc = 8, 1146 .size = { 1147 .width = 217, 1148 .height = 136, 1149 }, 1150 .delay = { 1151 /* TODO: should be hpd-absent and no-hpd should be set? */ 1152 .hpd_reliable = 210, 1153 .enable = 50, 1154 .unprepare = 160, 1155 }, 1156 }; 1157 1158 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = { 1159 { 1160 .clock = 207800, 1161 .hdisplay = 2160, 1162 .hsync_start = 2160 + 48, 1163 .hsync_end = 2160 + 48 + 32, 1164 .htotal = 2160 + 48 + 32 + 100, 1165 .vdisplay = 1440, 1166 .vsync_start = 1440 + 3, 1167 .vsync_end = 1440 + 3 + 6, 1168 .vtotal = 1440 + 3 + 6 + 31, 1169 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1170 }, 1171 { 1172 .clock = 138500, 1173 .hdisplay = 2160, 1174 .hsync_start = 2160 + 48, 1175 .hsync_end = 2160 + 48 + 32, 1176 .htotal = 2160 + 48 + 32 + 100, 1177 .vdisplay = 1440, 1178 .vsync_start = 1440 + 3, 1179 .vsync_end = 1440 + 3 + 6, 1180 .vtotal = 1440 + 3 + 6 + 31, 1181 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1182 }, 1183 }; 1184 1185 static const struct panel_desc boe_nv110wtm_n61 = { 1186 .modes = boe_nv110wtm_n61_modes, 1187 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes), 1188 .bpc = 8, 1189 .size = { 1190 .width = 233, 1191 .height = 155, 1192 }, 1193 .delay = { 1194 .hpd_absent = 200, 1195 .prepare_to_enable = 80, 1196 .enable = 50, 1197 .unprepare = 500, 1198 }, 1199 }; 1200 1201 /* Also used for boe_nv133fhm_n62 */ 1202 static const struct drm_display_mode boe_nv133fhm_n61_modes = { 1203 .clock = 147840, 1204 .hdisplay = 1920, 1205 .hsync_start = 1920 + 48, 1206 .hsync_end = 1920 + 48 + 32, 1207 .htotal = 1920 + 48 + 32 + 200, 1208 .vdisplay = 1080, 1209 .vsync_start = 1080 + 3, 1210 .vsync_end = 1080 + 3 + 6, 1211 .vtotal = 1080 + 3 + 6 + 31, 1212 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC, 1213 }; 1214 1215 /* Also used for boe_nv133fhm_n62 */ 1216 static const struct panel_desc boe_nv133fhm_n61 = { 1217 .modes = &boe_nv133fhm_n61_modes, 1218 .num_modes = 1, 1219 .bpc = 6, 1220 .size = { 1221 .width = 294, 1222 .height = 165, 1223 }, 1224 .delay = { 1225 /* 1226 * When power is first given to the panel there's a short 1227 * spike on the HPD line. It was explained that this spike 1228 * was until the TCON data download was complete. On 1229 * one system this was measured at 8 ms. We'll put 15 ms 1230 * in the prepare delay just to be safe. That means: 1231 * - If HPD isn't hooked up you still have 200 ms delay. 1232 * - If HPD is hooked up we won't try to look at it for the 1233 * first 15 ms. 1234 */ 1235 .hpd_reliable = 15, 1236 .hpd_absent = 200, 1237 1238 .unprepare = 500, 1239 }, 1240 }; 1241 1242 static const struct drm_display_mode boe_nv140fhmn49_modes[] = { 1243 { 1244 .clock = 148500, 1245 .hdisplay = 1920, 1246 .hsync_start = 1920 + 48, 1247 .hsync_end = 1920 + 48 + 32, 1248 .htotal = 2200, 1249 .vdisplay = 1080, 1250 .vsync_start = 1080 + 3, 1251 .vsync_end = 1080 + 3 + 5, 1252 .vtotal = 1125, 1253 }, 1254 }; 1255 1256 static const struct panel_desc boe_nv140fhmn49 = { 1257 .modes = boe_nv140fhmn49_modes, 1258 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes), 1259 .bpc = 6, 1260 .size = { 1261 .width = 309, 1262 .height = 174, 1263 }, 1264 .delay = { 1265 /* TODO: should be hpd-absent and no-hpd should be set? */ 1266 .hpd_reliable = 210, 1267 .enable = 50, 1268 .unprepare = 160, 1269 }, 1270 }; 1271 1272 static const struct drm_display_mode innolux_n116bca_ea1_mode = { 1273 .clock = 76420, 1274 .hdisplay = 1366, 1275 .hsync_start = 1366 + 136, 1276 .hsync_end = 1366 + 136 + 30, 1277 .htotal = 1366 + 136 + 30 + 60, 1278 .vdisplay = 768, 1279 .vsync_start = 768 + 8, 1280 .vsync_end = 768 + 8 + 12, 1281 .vtotal = 768 + 8 + 12 + 12, 1282 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1283 }; 1284 1285 static const struct panel_desc innolux_n116bca_ea1 = { 1286 .modes = &innolux_n116bca_ea1_mode, 1287 .num_modes = 1, 1288 .bpc = 6, 1289 .size = { 1290 .width = 256, 1291 .height = 144, 1292 }, 1293 .delay = { 1294 .hpd_absent = 200, 1295 .enable = 80, 1296 .disable = 50, 1297 .unprepare = 500, 1298 }, 1299 }; 1300 1301 /* 1302 * Datasheet specifies that at 60 Hz refresh rate: 1303 * - total horizontal time: { 1506, 1592, 1716 } 1304 * - total vertical time: { 788, 800, 868 } 1305 * 1306 * ...but doesn't go into exactly how that should be split into a front 1307 * porch, back porch, or sync length. For now we'll leave a single setting 1308 * here which allows a bit of tweaking of the pixel clock at the expense of 1309 * refresh rate. 1310 */ 1311 static const struct display_timing innolux_n116bge_timing = { 1312 .pixelclock = { 72600000, 76420000, 80240000 }, 1313 .hactive = { 1366, 1366, 1366 }, 1314 .hfront_porch = { 136, 136, 136 }, 1315 .hback_porch = { 60, 60, 60 }, 1316 .hsync_len = { 30, 30, 30 }, 1317 .vactive = { 768, 768, 768 }, 1318 .vfront_porch = { 8, 8, 8 }, 1319 .vback_porch = { 12, 12, 12 }, 1320 .vsync_len = { 12, 12, 12 }, 1321 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1322 }; 1323 1324 static const struct panel_desc innolux_n116bge = { 1325 .timings = &innolux_n116bge_timing, 1326 .num_timings = 1, 1327 .bpc = 6, 1328 .size = { 1329 .width = 256, 1330 .height = 144, 1331 }, 1332 }; 1333 1334 static const struct drm_display_mode innolux_n125hce_gn1_mode = { 1335 .clock = 162000, 1336 .hdisplay = 1920, 1337 .hsync_start = 1920 + 40, 1338 .hsync_end = 1920 + 40 + 40, 1339 .htotal = 1920 + 40 + 40 + 80, 1340 .vdisplay = 1080, 1341 .vsync_start = 1080 + 4, 1342 .vsync_end = 1080 + 4 + 4, 1343 .vtotal = 1080 + 4 + 4 + 24, 1344 }; 1345 1346 static const struct panel_desc innolux_n125hce_gn1 = { 1347 .modes = &innolux_n125hce_gn1_mode, 1348 .num_modes = 1, 1349 .bpc = 8, 1350 .size = { 1351 .width = 276, 1352 .height = 155, 1353 }, 1354 }; 1355 1356 static const struct drm_display_mode innolux_p120zdg_bf1_mode = { 1357 .clock = 206016, 1358 .hdisplay = 2160, 1359 .hsync_start = 2160 + 48, 1360 .hsync_end = 2160 + 48 + 32, 1361 .htotal = 2160 + 48 + 32 + 80, 1362 .vdisplay = 1440, 1363 .vsync_start = 1440 + 3, 1364 .vsync_end = 1440 + 3 + 10, 1365 .vtotal = 1440 + 3 + 10 + 27, 1366 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1367 }; 1368 1369 static const struct panel_desc innolux_p120zdg_bf1 = { 1370 .modes = &innolux_p120zdg_bf1_mode, 1371 .num_modes = 1, 1372 .bpc = 8, 1373 .size = { 1374 .width = 254, 1375 .height = 169, 1376 }, 1377 .delay = { 1378 .hpd_absent = 200, 1379 .unprepare = 500, 1380 }, 1381 }; 1382 1383 static const struct drm_display_mode ivo_m133nwf4_r0_mode = { 1384 .clock = 138778, 1385 .hdisplay = 1920, 1386 .hsync_start = 1920 + 24, 1387 .hsync_end = 1920 + 24 + 48, 1388 .htotal = 1920 + 24 + 48 + 88, 1389 .vdisplay = 1080, 1390 .vsync_start = 1080 + 3, 1391 .vsync_end = 1080 + 3 + 12, 1392 .vtotal = 1080 + 3 + 12 + 17, 1393 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1394 }; 1395 1396 static const struct panel_desc ivo_m133nwf4_r0 = { 1397 .modes = &ivo_m133nwf4_r0_mode, 1398 .num_modes = 1, 1399 .bpc = 8, 1400 .size = { 1401 .width = 294, 1402 .height = 165, 1403 }, 1404 .delay = { 1405 .hpd_absent = 200, 1406 .unprepare = 500, 1407 }, 1408 }; 1409 1410 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = { 1411 .clock = 81000, 1412 .hdisplay = 1366, 1413 .hsync_start = 1366 + 40, 1414 .hsync_end = 1366 + 40 + 32, 1415 .htotal = 1366 + 40 + 32 + 62, 1416 .vdisplay = 768, 1417 .vsync_start = 768 + 5, 1418 .vsync_end = 768 + 5 + 5, 1419 .vtotal = 768 + 5 + 5 + 122, 1420 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1421 }; 1422 1423 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = { 1424 .modes = &kingdisplay_kd116n21_30nv_a010_mode, 1425 .num_modes = 1, 1426 .bpc = 6, 1427 .size = { 1428 .width = 256, 1429 .height = 144, 1430 }, 1431 .delay = { 1432 .hpd_absent = 200, 1433 }, 1434 }; 1435 1436 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = { 1437 .clock = 200000, 1438 .hdisplay = 1536, 1439 .hsync_start = 1536 + 12, 1440 .hsync_end = 1536 + 12 + 16, 1441 .htotal = 1536 + 12 + 16 + 48, 1442 .vdisplay = 2048, 1443 .vsync_start = 2048 + 8, 1444 .vsync_end = 2048 + 8 + 4, 1445 .vtotal = 2048 + 8 + 4 + 8, 1446 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1447 }; 1448 1449 static const struct panel_desc lg_lp079qx1_sp0v = { 1450 .modes = &lg_lp079qx1_sp0v_mode, 1451 .num_modes = 1, 1452 .size = { 1453 .width = 129, 1454 .height = 171, 1455 }, 1456 }; 1457 1458 static const struct drm_display_mode lg_lp097qx1_spa1_mode = { 1459 .clock = 205210, 1460 .hdisplay = 2048, 1461 .hsync_start = 2048 + 150, 1462 .hsync_end = 2048 + 150 + 5, 1463 .htotal = 2048 + 150 + 5 + 5, 1464 .vdisplay = 1536, 1465 .vsync_start = 1536 + 3, 1466 .vsync_end = 1536 + 3 + 1, 1467 .vtotal = 1536 + 3 + 1 + 9, 1468 }; 1469 1470 static const struct panel_desc lg_lp097qx1_spa1 = { 1471 .modes = &lg_lp097qx1_spa1_mode, 1472 .num_modes = 1, 1473 .size = { 1474 .width = 208, 1475 .height = 147, 1476 }, 1477 }; 1478 1479 static const struct drm_display_mode lg_lp120up1_mode = { 1480 .clock = 162300, 1481 .hdisplay = 1920, 1482 .hsync_start = 1920 + 40, 1483 .hsync_end = 1920 + 40 + 40, 1484 .htotal = 1920 + 40 + 40 + 80, 1485 .vdisplay = 1280, 1486 .vsync_start = 1280 + 4, 1487 .vsync_end = 1280 + 4 + 4, 1488 .vtotal = 1280 + 4 + 4 + 12, 1489 }; 1490 1491 static const struct panel_desc lg_lp120up1 = { 1492 .modes = &lg_lp120up1_mode, 1493 .num_modes = 1, 1494 .bpc = 8, 1495 .size = { 1496 .width = 267, 1497 .height = 183, 1498 }, 1499 }; 1500 1501 static const struct drm_display_mode lg_lp129qe_mode = { 1502 .clock = 285250, 1503 .hdisplay = 2560, 1504 .hsync_start = 2560 + 48, 1505 .hsync_end = 2560 + 48 + 32, 1506 .htotal = 2560 + 48 + 32 + 80, 1507 .vdisplay = 1700, 1508 .vsync_start = 1700 + 3, 1509 .vsync_end = 1700 + 3 + 10, 1510 .vtotal = 1700 + 3 + 10 + 36, 1511 }; 1512 1513 static const struct panel_desc lg_lp129qe = { 1514 .modes = &lg_lp129qe_mode, 1515 .num_modes = 1, 1516 .bpc = 8, 1517 .size = { 1518 .width = 272, 1519 .height = 181, 1520 }, 1521 }; 1522 1523 static const struct drm_display_mode neweast_wjfh116008a_modes[] = { 1524 { 1525 .clock = 138500, 1526 .hdisplay = 1920, 1527 .hsync_start = 1920 + 48, 1528 .hsync_end = 1920 + 48 + 32, 1529 .htotal = 1920 + 48 + 32 + 80, 1530 .vdisplay = 1080, 1531 .vsync_start = 1080 + 3, 1532 .vsync_end = 1080 + 3 + 5, 1533 .vtotal = 1080 + 3 + 5 + 23, 1534 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1535 }, { 1536 .clock = 110920, 1537 .hdisplay = 1920, 1538 .hsync_start = 1920 + 48, 1539 .hsync_end = 1920 + 48 + 32, 1540 .htotal = 1920 + 48 + 32 + 80, 1541 .vdisplay = 1080, 1542 .vsync_start = 1080 + 3, 1543 .vsync_end = 1080 + 3 + 5, 1544 .vtotal = 1080 + 3 + 5 + 23, 1545 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1546 } 1547 }; 1548 1549 static const struct panel_desc neweast_wjfh116008a = { 1550 .modes = neweast_wjfh116008a_modes, 1551 .num_modes = 2, 1552 .bpc = 6, 1553 .size = { 1554 .width = 260, 1555 .height = 150, 1556 }, 1557 .delay = { 1558 .hpd_reliable = 110, 1559 .enable = 20, 1560 .unprepare = 500, 1561 }, 1562 }; 1563 1564 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = { 1565 .clock = 271560, 1566 .hdisplay = 2560, 1567 .hsync_start = 2560 + 48, 1568 .hsync_end = 2560 + 48 + 32, 1569 .htotal = 2560 + 48 + 32 + 80, 1570 .vdisplay = 1600, 1571 .vsync_start = 1600 + 2, 1572 .vsync_end = 1600 + 2 + 5, 1573 .vtotal = 1600 + 2 + 5 + 57, 1574 }; 1575 1576 static const struct panel_desc samsung_lsn122dl01_c01 = { 1577 .modes = &samsung_lsn122dl01_c01_mode, 1578 .num_modes = 1, 1579 .size = { 1580 .width = 263, 1581 .height = 164, 1582 }, 1583 }; 1584 1585 static const struct drm_display_mode samsung_ltn140at29_301_mode = { 1586 .clock = 76300, 1587 .hdisplay = 1366, 1588 .hsync_start = 1366 + 64, 1589 .hsync_end = 1366 + 64 + 48, 1590 .htotal = 1366 + 64 + 48 + 128, 1591 .vdisplay = 768, 1592 .vsync_start = 768 + 2, 1593 .vsync_end = 768 + 2 + 5, 1594 .vtotal = 768 + 2 + 5 + 17, 1595 }; 1596 1597 static const struct panel_desc samsung_ltn140at29_301 = { 1598 .modes = &samsung_ltn140at29_301_mode, 1599 .num_modes = 1, 1600 .bpc = 6, 1601 .size = { 1602 .width = 320, 1603 .height = 187, 1604 }, 1605 }; 1606 1607 static const struct drm_display_mode sharp_ld_d5116z01b_mode = { 1608 .clock = 168480, 1609 .hdisplay = 1920, 1610 .hsync_start = 1920 + 48, 1611 .hsync_end = 1920 + 48 + 32, 1612 .htotal = 1920 + 48 + 32 + 80, 1613 .vdisplay = 1280, 1614 .vsync_start = 1280 + 3, 1615 .vsync_end = 1280 + 3 + 10, 1616 .vtotal = 1280 + 3 + 10 + 57, 1617 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC, 1618 }; 1619 1620 static const struct panel_desc sharp_ld_d5116z01b = { 1621 .modes = &sharp_ld_d5116z01b_mode, 1622 .num_modes = 1, 1623 .bpc = 8, 1624 .size = { 1625 .width = 260, 1626 .height = 120, 1627 }, 1628 }; 1629 1630 static const struct display_timing sharp_lq123p1jx31_timing = { 1631 .pixelclock = { 252750000, 252750000, 266604720 }, 1632 .hactive = { 2400, 2400, 2400 }, 1633 .hfront_porch = { 48, 48, 48 }, 1634 .hback_porch = { 80, 80, 84 }, 1635 .hsync_len = { 32, 32, 32 }, 1636 .vactive = { 1600, 1600, 1600 }, 1637 .vfront_porch = { 3, 3, 3 }, 1638 .vback_porch = { 33, 33, 120 }, 1639 .vsync_len = { 10, 10, 10 }, 1640 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, 1641 }; 1642 1643 static const struct panel_desc sharp_lq123p1jx31 = { 1644 .timings = &sharp_lq123p1jx31_timing, 1645 .num_timings = 1, 1646 .bpc = 8, 1647 .size = { 1648 .width = 259, 1649 .height = 173, 1650 }, 1651 .delay = { 1652 .hpd_reliable = 110, 1653 .enable = 50, 1654 .unprepare = 550, 1655 }, 1656 }; 1657 1658 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = { 1659 { 1660 .clock = 346500, 1661 .hdisplay = 1920, 1662 .hsync_start = 1920 + 48, 1663 .hsync_end = 1920 + 48 + 32, 1664 .htotal = 1920 + 48 + 32 + 80, 1665 .vdisplay = 1080, 1666 .vsync_start = 1080 + 3, 1667 .vsync_end = 1080 + 3 + 5, 1668 .vtotal = 1080 + 3 + 5 + 69, 1669 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1670 }, { 1671 .clock = 144370, 1672 .hdisplay = 1920, 1673 .hsync_start = 1920 + 48, 1674 .hsync_end = 1920 + 48 + 32, 1675 .htotal = 1920 + 48 + 32 + 80, 1676 .vdisplay = 1080, 1677 .vsync_start = 1080 + 3, 1678 .vsync_end = 1080 + 3 + 5, 1679 .vtotal = 1080 + 3 + 5 + 69, 1680 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1681 }, 1682 }; 1683 1684 static const struct panel_desc sharp_lq140m1jw46 = { 1685 .modes = sharp_lq140m1jw46_mode, 1686 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode), 1687 .bpc = 8, 1688 .size = { 1689 .width = 309, 1690 .height = 174, 1691 }, 1692 .delay = { 1693 .hpd_absent = 80, 1694 .enable = 50, 1695 .unprepare = 500, 1696 }, 1697 }; 1698 1699 static const struct drm_display_mode starry_kr122ea0sra_mode = { 1700 .clock = 147000, 1701 .hdisplay = 1920, 1702 .hsync_start = 1920 + 16, 1703 .hsync_end = 1920 + 16 + 16, 1704 .htotal = 1920 + 16 + 16 + 32, 1705 .vdisplay = 1200, 1706 .vsync_start = 1200 + 15, 1707 .vsync_end = 1200 + 15 + 2, 1708 .vtotal = 1200 + 15 + 2 + 18, 1709 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, 1710 }; 1711 1712 static const struct panel_desc starry_kr122ea0sra = { 1713 .modes = &starry_kr122ea0sra_mode, 1714 .num_modes = 1, 1715 .size = { 1716 .width = 263, 1717 .height = 164, 1718 }, 1719 .delay = { 1720 /* TODO: should be hpd-absent and no-hpd should be set? */ 1721 .hpd_reliable = 10 + 200, 1722 .enable = 50, 1723 .unprepare = 10 + 500, 1724 }, 1725 }; 1726 1727 static const struct of_device_id platform_of_match[] = { 1728 { 1729 /* Must be first */ 1730 .compatible = "edp-panel", 1731 }, { 1732 .compatible = "auo,b101ean01", 1733 .data = &auo_b101ean01, 1734 }, { 1735 .compatible = "auo,b116xa01", 1736 .data = &auo_b116xak01, 1737 }, { 1738 .compatible = "auo,b133han05", 1739 .data = &auo_b133han05, 1740 }, { 1741 .compatible = "auo,b133htn01", 1742 .data = &auo_b133htn01, 1743 }, { 1744 .compatible = "auo,b133xtn01", 1745 .data = &auo_b133xtn01, 1746 }, { 1747 .compatible = "auo,b140han06", 1748 .data = &auo_b140han06, 1749 }, { 1750 .compatible = "boe,nv101wxmn51", 1751 .data = &boe_nv101wxmn51, 1752 }, { 1753 .compatible = "boe,nv110wtm-n61", 1754 .data = &boe_nv110wtm_n61, 1755 }, { 1756 .compatible = "boe,nv133fhm-n61", 1757 .data = &boe_nv133fhm_n61, 1758 }, { 1759 .compatible = "boe,nv133fhm-n62", 1760 .data = &boe_nv133fhm_n61, 1761 }, { 1762 .compatible = "boe,nv140fhmn49", 1763 .data = &boe_nv140fhmn49, 1764 }, { 1765 .compatible = "innolux,n116bca-ea1", 1766 .data = &innolux_n116bca_ea1, 1767 }, { 1768 .compatible = "innolux,n116bge", 1769 .data = &innolux_n116bge, 1770 }, { 1771 .compatible = "innolux,n125hce-gn1", 1772 .data = &innolux_n125hce_gn1, 1773 }, { 1774 .compatible = "innolux,p120zdg-bf1", 1775 .data = &innolux_p120zdg_bf1, 1776 }, { 1777 .compatible = "ivo,m133nwf4-r0", 1778 .data = &ivo_m133nwf4_r0, 1779 }, { 1780 .compatible = "kingdisplay,kd116n21-30nv-a010", 1781 .data = &kingdisplay_kd116n21_30nv_a010, 1782 }, { 1783 .compatible = "lg,lp079qx1-sp0v", 1784 .data = &lg_lp079qx1_sp0v, 1785 }, { 1786 .compatible = "lg,lp097qx1-spa1", 1787 .data = &lg_lp097qx1_spa1, 1788 }, { 1789 .compatible = "lg,lp120up1", 1790 .data = &lg_lp120up1, 1791 }, { 1792 .compatible = "lg,lp129qe", 1793 .data = &lg_lp129qe, 1794 }, { 1795 .compatible = "neweast,wjfh116008a", 1796 .data = &neweast_wjfh116008a, 1797 }, { 1798 .compatible = "samsung,lsn122dl01-c01", 1799 .data = &samsung_lsn122dl01_c01, 1800 }, { 1801 .compatible = "samsung,ltn140at29-301", 1802 .data = &samsung_ltn140at29_301, 1803 }, { 1804 .compatible = "sharp,ld-d5116z01b", 1805 .data = &sharp_ld_d5116z01b, 1806 }, { 1807 .compatible = "sharp,lq123p1jx31", 1808 .data = &sharp_lq123p1jx31, 1809 }, { 1810 .compatible = "sharp,lq140m1jw46", 1811 .data = &sharp_lq140m1jw46, 1812 }, { 1813 .compatible = "starry,kr122ea0sra", 1814 .data = &starry_kr122ea0sra, 1815 }, { 1816 /* sentinel */ 1817 } 1818 }; 1819 MODULE_DEVICE_TABLE(of, platform_of_match); 1820 1821 static const struct panel_delay delay_200_500_p2e80 = { 1822 .hpd_absent = 200, 1823 .unprepare = 500, 1824 .prepare_to_enable = 80, 1825 }; 1826 1827 static const struct panel_delay delay_200_500_p2e100 = { 1828 .hpd_absent = 200, 1829 .unprepare = 500, 1830 .prepare_to_enable = 100, 1831 }; 1832 1833 static const struct panel_delay delay_200_500_e50 = { 1834 .hpd_absent = 200, 1835 .unprepare = 500, 1836 .enable = 50, 1837 }; 1838 1839 static const struct panel_delay delay_200_500_e80_d50 = { 1840 .hpd_absent = 200, 1841 .unprepare = 500, 1842 .enable = 80, 1843 .disable = 50, 1844 }; 1845 1846 static const struct panel_delay delay_100_500_e200 = { 1847 .hpd_absent = 100, 1848 .unprepare = 500, 1849 .enable = 200, 1850 }; 1851 1852 static const struct panel_delay delay_200_500_e200 = { 1853 .hpd_absent = 200, 1854 .unprepare = 500, 1855 .enable = 200, 1856 }; 1857 1858 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \ 1859 { \ 1860 .name = _name, \ 1861 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1862 product_id), \ 1863 .delay = _delay \ 1864 } 1865 1866 #define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \ 1867 { \ 1868 .name = _name, \ 1869 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \ 1870 product_id), \ 1871 .delay = _delay, \ 1872 .override_edid_mode = _mode \ 1873 } 1874 1875 /* 1876 * This table is used to figure out power sequencing delays for panels that 1877 * are detected by EDID. Entries here may point to entries in the 1878 * platform_of_match table (if a panel is listed in both places). 1879 * 1880 * Sort first by vendor, then by product ID. 1881 */ 1882 static const struct edp_panel_entry edp_panels[] = { 1883 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"), 1884 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"), 1885 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"), 1886 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"), 1887 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"), 1888 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0"), 1889 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"), 1890 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"), 1891 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"), 1892 1893 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"), 1894 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"), 1895 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"), 1896 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"), 1897 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"), 1898 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"), 1899 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"), 1900 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"), 1901 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"), 1902 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"), 1903 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"), 1904 1905 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"), 1906 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"), 1907 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"), 1908 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"), 1909 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"), 1910 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"), 1911 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"), 1912 1913 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"), 1914 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"), 1915 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"), 1916 1917 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"), 1918 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"), 1919 1920 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"), 1921 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"), 1922 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"), 1923 1924 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"), 1925 1926 { /* sentinal */ } 1927 }; 1928 1929 static const struct edp_panel_entry *find_edp_panel(u32 panel_id) 1930 { 1931 const struct edp_panel_entry *panel; 1932 1933 if (!panel_id) 1934 return NULL; 1935 1936 for (panel = edp_panels; panel->panel_id; panel++) 1937 if (panel->panel_id == panel_id) 1938 return panel; 1939 1940 return NULL; 1941 } 1942 1943 static int panel_edp_platform_probe(struct platform_device *pdev) 1944 { 1945 const struct of_device_id *id; 1946 1947 /* Skip one since "edp-panel" is only supported on DP AUX bus */ 1948 id = of_match_node(platform_of_match + 1, pdev->dev.of_node); 1949 if (!id) 1950 return -ENODEV; 1951 1952 return panel_edp_probe(&pdev->dev, id->data, NULL); 1953 } 1954 1955 static void panel_edp_platform_remove(struct platform_device *pdev) 1956 { 1957 panel_edp_remove(&pdev->dev); 1958 } 1959 1960 static void panel_edp_platform_shutdown(struct platform_device *pdev) 1961 { 1962 panel_edp_shutdown(&pdev->dev); 1963 } 1964 1965 static const struct dev_pm_ops panel_edp_pm_ops = { 1966 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL) 1967 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1968 pm_runtime_force_resume) 1969 }; 1970 1971 static struct platform_driver panel_edp_platform_driver = { 1972 .driver = { 1973 .name = "panel-edp", 1974 .of_match_table = platform_of_match, 1975 .pm = &panel_edp_pm_ops, 1976 }, 1977 .probe = panel_edp_platform_probe, 1978 .remove_new = panel_edp_platform_remove, 1979 .shutdown = panel_edp_platform_shutdown, 1980 }; 1981 1982 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep) 1983 { 1984 const struct of_device_id *id; 1985 1986 id = of_match_node(platform_of_match, aux_ep->dev.of_node); 1987 if (!id) 1988 return -ENODEV; 1989 1990 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux); 1991 } 1992 1993 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep) 1994 { 1995 panel_edp_remove(&aux_ep->dev); 1996 } 1997 1998 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep) 1999 { 2000 panel_edp_shutdown(&aux_ep->dev); 2001 } 2002 2003 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = { 2004 .driver = { 2005 .name = "panel-simple-dp-aux", 2006 .of_match_table = platform_of_match, /* Same as platform one! */ 2007 .pm = &panel_edp_pm_ops, 2008 }, 2009 .probe = panel_edp_dp_aux_ep_probe, 2010 .remove = panel_edp_dp_aux_ep_remove, 2011 .shutdown = panel_edp_dp_aux_ep_shutdown, 2012 }; 2013 2014 static int __init panel_edp_init(void) 2015 { 2016 int err; 2017 2018 err = platform_driver_register(&panel_edp_platform_driver); 2019 if (err < 0) 2020 return err; 2021 2022 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver); 2023 if (err < 0) 2024 goto err_did_platform_register; 2025 2026 return 0; 2027 2028 err_did_platform_register: 2029 platform_driver_unregister(&panel_edp_platform_driver); 2030 2031 return err; 2032 } 2033 module_init(panel_edp_init); 2034 2035 static void __exit panel_edp_exit(void) 2036 { 2037 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver); 2038 platform_driver_unregister(&panel_edp_platform_driver); 2039 } 2040 module_exit(panel_edp_exit); 2041 2042 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>"); 2043 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels"); 2044 MODULE_LICENSE("GPL and additional rights"); 2045