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 */
  48struct 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	 * @powered_on_to_enable: Time between panel powered on and enable.
  75	 *
  76	 * The minimum time, in milliseconds, that needs to have passed
  77	 * between when panel powered on and enable may begin.
  78	 *
  79	 * This is (T3+T4+T5+T6+T8)-min on eDP timing diagrams or after the
  80	 * power supply enabled until we can turn the backlight on and see
  81	 * valid data.
  82	 *
  83	 * This doesn't normally need to be set if timings are already met by
  84	 * prepare_to_enable or enable.
  85	 */
  86	unsigned int powered_on_to_enable;
  87
  88	/**
  89	 * @prepare_to_enable: Time between prepare and enable.
  90	 *
  91	 * The minimum time, in milliseconds, that needs to have passed
  92	 * between when prepare finished and enable may begin. If at
  93	 * enable time less time has passed since prepare finished,
  94	 * the driver waits for the remaining time.
  95	 *
  96	 * If a fixed enable delay is also specified, we'll start
  97	 * counting before delaying for the fixed delay.
  98	 *
  99	 * If a fixed prepare delay is also specified, we won't start
 100	 * counting until after the fixed delay. We can't overlap this
 101	 * fixed delay with the min time because the fixed delay
 102	 * doesn't happen at the end of the function if a HPD GPIO was
 103	 * specified.
 104	 *
 105	 * In other words:
 106	 *   prepare()
 107	 *     ...
 108	 *     // do fixed prepare delay
 109	 *     // wait for HPD GPIO if applicable
 110	 *     // start counting for prepare_to_enable
 111	 *
 112	 *   enable()
 113	 *     // do fixed enable delay
 114	 *     // enforce prepare_to_enable min time
 115	 *
 116	 * This is not specified in a standard way on eDP timing diagrams.
 117	 * It is effectively the time from HPD going high till you can
 118	 * turn on the backlight.
 119	 */
 120	unsigned int prepare_to_enable;
 121
 122	/**
 123	 * @enable: Time for the panel to display a valid frame.
 124	 *
 125	 * The time (in milliseconds) that it takes for the panel to
 126	 * display the first valid frame after starting to receive
 127	 * video data.
 128	 *
 129	 * This is (T6-min + max(T7-max, T8-min)) on eDP timing diagrams or
 130	 * the delay after link training finishes until we can turn the
 131	 * backlight on and see valid data.
 132	 */
 133	unsigned int enable;
 134
 135	/**
 136	 * @disable: Time for the panel to turn the display off.
 137	 *
 138	 * The time (in milliseconds) that it takes for the panel to
 139	 * turn the display off (no content is visible).
 140	 *
 141	 * This is T9-min (delay from backlight off to end of valid video
 142	 * data) on eDP timing diagrams. It is not common to set.
 143	 */
 144	unsigned int disable;
 145
 146	/**
 147	 * @unprepare: Time to power down completely.
 148	 *
 149	 * The time (in milliseconds) that it takes for the panel
 150	 * to power itself down completely.
 151	 *
 152	 * This time is used to prevent a future "prepare" from
 153	 * starting until at least this many milliseconds has passed.
 154	 * If at prepare time less time has passed since unprepare
 155	 * finished, the driver waits for the remaining time.
 156	 *
 157	 * This is T12-min on eDP timing diagrams.
 158	 */
 159	unsigned int unprepare;
 160};
 161
 162/**
 163 * struct panel_desc - Describes a simple panel.
 164 */
 165struct panel_desc {
 166	/**
 167	 * @modes: Pointer to array of fixed modes appropriate for this panel.
 168	 *
 169	 * If only one mode then this can just be the address of the mode.
 170	 * NOTE: cannot be used with "timings" and also if this is specified
 171	 * then you cannot override the mode in the device tree.
 172	 */
 173	const struct drm_display_mode *modes;
 174
 175	/** @num_modes: Number of elements in modes array. */
 176	unsigned int num_modes;
 177
 178	/**
 179	 * @timings: Pointer to array of display timings
 180	 *
 181	 * NOTE: cannot be used with "modes" and also these will be used to
 182	 * validate a device tree override if one is present.
 183	 */
 184	const struct display_timing *timings;
 185
 186	/** @num_timings: Number of elements in timings array. */
 187	unsigned int num_timings;
 188
 189	/** @bpc: Bits per color. */
 190	unsigned int bpc;
 191
 192	/** @size: Structure containing the physical size of this panel. */
 193	struct {
 194		/**
 195		 * @size.width: Width (in mm) of the active display area.
 196		 */
 197		unsigned int width;
 198
 199		/**
 200		 * @size.height: Height (in mm) of the active display area.
 201		 */
 202		unsigned int height;
 203	} size;
 204
 205	/** @delay: Structure containing various delay values for this panel. */
 206	struct panel_delay delay;
 207};
 208
 209/**
 210 * struct edp_panel_entry - Maps panel ID to delay / panel name.
 211 */
 212struct edp_panel_entry {
 213	/** @ident: edid identity used for panel matching. */
 214	const struct drm_edid_ident ident;
 215
 216	/** @delay: The power sequencing delays needed for this panel. */
 217	const struct panel_delay *delay;
 218
 
 
 
 219	/** @override_edid_mode: Override the mode obtained by edid. */
 220	const struct drm_display_mode *override_edid_mode;
 221};
 222
 223struct panel_edp {
 224	struct drm_panel base;
 
 225	bool no_hpd;
 226
 
 
 227	ktime_t prepared_time;
 228	ktime_t powered_on_time;
 229	ktime_t unprepared_time;
 230
 231	const struct panel_desc *desc;
 232
 233	struct regulator *supply;
 234	struct i2c_adapter *ddc;
 235	struct drm_dp_aux *aux;
 236
 237	struct gpio_desc *enable_gpio;
 238	struct gpio_desc *hpd_gpio;
 239
 240	const struct edp_panel_entry *detected_panel;
 241
 242	const struct drm_edid *drm_edid;
 243
 244	struct drm_display_mode override_mode;
 245
 246	enum drm_panel_orientation orientation;
 247};
 248
 249static inline struct panel_edp *to_panel_edp(struct drm_panel *panel)
 250{
 251	return container_of(panel, struct panel_edp, base);
 252}
 253
 254static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel,
 255						struct drm_connector *connector)
 256{
 257	struct drm_display_mode *mode;
 258	unsigned int i, num = 0;
 259
 260	for (i = 0; i < panel->desc->num_timings; i++) {
 261		const struct display_timing *dt = &panel->desc->timings[i];
 262		struct videomode vm;
 263
 264		videomode_from_timing(dt, &vm);
 265		mode = drm_mode_create(connector->dev);
 266		if (!mode) {
 267			dev_err(panel->base.dev, "failed to add mode %ux%u\n",
 268				dt->hactive.typ, dt->vactive.typ);
 269			continue;
 270		}
 271
 272		drm_display_mode_from_videomode(&vm, mode);
 273
 274		mode->type |= DRM_MODE_TYPE_DRIVER;
 275
 276		if (panel->desc->num_timings == 1)
 277			mode->type |= DRM_MODE_TYPE_PREFERRED;
 278
 279		drm_mode_probed_add(connector, mode);
 280		num++;
 281	}
 282
 283	return num;
 284}
 285
 286static unsigned int panel_edp_get_display_modes(struct panel_edp *panel,
 287						struct drm_connector *connector)
 288{
 289	struct drm_display_mode *mode;
 290	unsigned int i, num = 0;
 291
 292	for (i = 0; i < panel->desc->num_modes; i++) {
 293		const struct drm_display_mode *m = &panel->desc->modes[i];
 294
 295		mode = drm_mode_duplicate(connector->dev, m);
 296		if (!mode) {
 297			dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n",
 298				m->hdisplay, m->vdisplay,
 299				drm_mode_vrefresh(m));
 300			continue;
 301		}
 302
 303		mode->type |= DRM_MODE_TYPE_DRIVER;
 304
 305		if (panel->desc->num_modes == 1)
 306			mode->type |= DRM_MODE_TYPE_PREFERRED;
 307
 308		drm_mode_set_name(mode);
 309
 310		drm_mode_probed_add(connector, mode);
 311		num++;
 312	}
 313
 314	return num;
 315}
 316
 317static int panel_edp_override_edid_mode(struct panel_edp *panel,
 318					struct drm_connector *connector,
 319					const struct drm_display_mode *override_mode)
 320{
 321	struct drm_display_mode *mode;
 322
 323	mode = drm_mode_duplicate(connector->dev, override_mode);
 324	if (!mode) {
 325		dev_err(panel->base.dev, "failed to add additional mode\n");
 326		return 0;
 327	}
 328
 329	mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
 330	drm_mode_set_name(mode);
 331	drm_mode_probed_add(connector, mode);
 332	return 1;
 333}
 334
 335static int panel_edp_get_non_edid_modes(struct panel_edp *panel,
 336					struct drm_connector *connector)
 337{
 338	struct drm_display_mode *mode;
 339	bool has_override = panel->override_mode.type;
 340	unsigned int num = 0;
 341
 342	if (!panel->desc)
 343		return 0;
 344
 345	if (has_override) {
 346		mode = drm_mode_duplicate(connector->dev,
 347					  &panel->override_mode);
 348		if (mode) {
 349			drm_mode_probed_add(connector, mode);
 350			num = 1;
 351		} else {
 352			dev_err(panel->base.dev, "failed to add override mode\n");
 353		}
 354	}
 355
 356	/* Only add timings if override was not there or failed to validate */
 357	if (num == 0 && panel->desc->num_timings)
 358		num = panel_edp_get_timings_modes(panel, connector);
 359
 360	/*
 361	 * Only add fixed modes if timings/override added no mode.
 362	 *
 363	 * We should only ever have either the display timings specified
 364	 * or a fixed mode. Anything else is rather bogus.
 365	 */
 366	WARN_ON(panel->desc->num_timings && panel->desc->num_modes);
 367	if (num == 0)
 368		num = panel_edp_get_display_modes(panel, connector);
 369
 370	connector->display_info.bpc = panel->desc->bpc;
 371	connector->display_info.width_mm = panel->desc->size.width;
 372	connector->display_info.height_mm = panel->desc->size.height;
 373
 374	return num;
 375}
 376
 377static void panel_edp_wait(ktime_t start_ktime, unsigned int min_ms)
 378{
 379	ktime_t now_ktime, min_ktime;
 380
 381	if (!min_ms)
 382		return;
 383
 384	min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms));
 385	now_ktime = ktime_get_boottime();
 386
 387	if (ktime_before(now_ktime, min_ktime))
 388		msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
 389}
 390
 391static int panel_edp_disable(struct drm_panel *panel)
 392{
 393	struct panel_edp *p = to_panel_edp(panel);
 394
 
 
 
 395	if (p->desc->delay.disable)
 396		msleep(p->desc->delay.disable);
 397
 
 
 398	return 0;
 399}
 400
 401static int panel_edp_suspend(struct device *dev)
 402{
 403	struct panel_edp *p = dev_get_drvdata(dev);
 404
 405	drm_dp_dpcd_set_powered(p->aux, false);
 406	gpiod_set_value_cansleep(p->enable_gpio, 0);
 407	regulator_disable(p->supply);
 408	p->unprepared_time = ktime_get_boottime();
 409
 410	return 0;
 411}
 412
 413static int panel_edp_unprepare(struct drm_panel *panel)
 414{
 
 415	int ret;
 416
 
 
 
 
 417	ret = pm_runtime_put_sync_suspend(panel->dev);
 418	if (ret < 0)
 419		return ret;
 
 420
 421	return 0;
 422}
 423
 424static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p)
 425{
 426	p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
 427	if (IS_ERR(p->hpd_gpio))
 428		return dev_err_probe(dev, PTR_ERR(p->hpd_gpio),
 429				     "failed to get 'hpd' GPIO\n");
 430
 431	return 0;
 432}
 433
 434static bool panel_edp_can_read_hpd(struct panel_edp *p)
 435{
 436	return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted));
 437}
 438
 439static int panel_edp_prepare_once(struct panel_edp *p)
 440{
 441	struct device *dev = p->base.dev;
 442	unsigned int delay;
 443	int err;
 444	int hpd_asserted;
 445	unsigned long hpd_wait_us;
 446
 447	panel_edp_wait(p->unprepared_time, p->desc->delay.unprepare);
 448
 449	err = regulator_enable(p->supply);
 450	if (err < 0) {
 451		dev_err(dev, "failed to enable supply: %d\n", err);
 452		return err;
 453	}
 454
 455	gpiod_set_value_cansleep(p->enable_gpio, 1);
 456	drm_dp_dpcd_set_powered(p->aux, true);
 457
 458	p->powered_on_time = ktime_get_boottime();
 459
 460	delay = p->desc->delay.hpd_reliable;
 461	if (p->no_hpd)
 462		delay = max(delay, p->desc->delay.hpd_absent);
 463	if (delay)
 464		msleep(delay);
 465
 466	if (panel_edp_can_read_hpd(p)) {
 467		if (p->desc->delay.hpd_absent)
 468			hpd_wait_us = p->desc->delay.hpd_absent * 1000UL;
 469		else
 470			hpd_wait_us = 2000000;
 471
 472		if (p->hpd_gpio) {
 473			err = readx_poll_timeout(gpiod_get_value_cansleep,
 474						 p->hpd_gpio, hpd_asserted,
 475						 hpd_asserted, 1000, hpd_wait_us);
 476			if (hpd_asserted < 0)
 477				err = hpd_asserted;
 478		} else {
 479			err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us);
 480		}
 481
 482		if (err) {
 483			if (err != -ETIMEDOUT)
 484				dev_err(dev,
 485					"error waiting for hpd GPIO: %d\n", err);
 486			goto error;
 487		}
 488	}
 489
 490	p->prepared_time = ktime_get_boottime();
 491
 492	return 0;
 493
 494error:
 495	drm_dp_dpcd_set_powered(p->aux, false);
 496	gpiod_set_value_cansleep(p->enable_gpio, 0);
 497	regulator_disable(p->supply);
 498	p->unprepared_time = ktime_get_boottime();
 499
 500	return err;
 501}
 502
 503/*
 504 * Some panels simply don't always come up and need to be power cycled to
 505 * work properly.  We'll allow for a handful of retries.
 506 */
 507#define MAX_PANEL_PREPARE_TRIES		5
 508
 509static int panel_edp_resume(struct device *dev)
 510{
 511	struct panel_edp *p = dev_get_drvdata(dev);
 512	int ret;
 513	int try;
 514
 515	for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) {
 516		ret = panel_edp_prepare_once(p);
 517		if (ret != -ETIMEDOUT)
 518			break;
 519	}
 520
 521	if (ret == -ETIMEDOUT)
 522		dev_err(dev, "Prepare timeout after %d tries\n", try);
 523	else if (try)
 524		dev_warn(dev, "Prepare needed %d retries\n", try);
 525
 526	return ret;
 527}
 528
 529static int panel_edp_prepare(struct drm_panel *panel)
 530{
 
 531	int ret;
 532
 
 
 
 
 533	ret = pm_runtime_get_sync(panel->dev);
 534	if (ret < 0) {
 535		pm_runtime_put_autosuspend(panel->dev);
 536		return ret;
 537	}
 538
 
 
 539	return 0;
 540}
 541
 542static int panel_edp_enable(struct drm_panel *panel)
 543{
 544	struct panel_edp *p = to_panel_edp(panel);
 545	unsigned int delay;
 546
 
 
 
 547	delay = p->desc->delay.enable;
 548
 549	/*
 550	 * If there is a "prepare_to_enable" delay then that's supposed to be
 551	 * the delay from HPD going high until we can turn the backlight on.
 552	 * However, we can only count this if HPD is readable by the panel
 553	 * driver.
 554	 *
 555	 * If we aren't handling the HPD pin ourselves then the best we
 556	 * can do is assume that HPD went high immediately before we were
 557	 * called (and link training took zero time). Note that "no-hpd"
 558	 * actually counts as handling HPD ourselves since we're doing the
 559	 * worst case delay (in prepare) ourselves.
 560	 *
 561	 * NOTE: if we ever end up in this "if" statement then we're
 562	 * guaranteed that the panel_edp_wait() call below will do no delay.
 563	 * It already handles that case, though, so we don't need any special
 564	 * code for it.
 565	 */
 566	if (p->desc->delay.prepare_to_enable &&
 567	    !panel_edp_can_read_hpd(p) && !p->no_hpd)
 568		delay = max(delay, p->desc->delay.prepare_to_enable);
 569
 570	if (delay)
 571		msleep(delay);
 572
 573	panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
 574
 575	panel_edp_wait(p->powered_on_time, p->desc->delay.powered_on_to_enable);
 576
 
 
 577	return 0;
 578}
 579
 580static int panel_edp_get_modes(struct drm_panel *panel,
 581			       struct drm_connector *connector)
 582{
 583	struct panel_edp *p = to_panel_edp(panel);
 584	int num = 0;
 585	bool has_hard_coded_modes = p->desc->num_timings || p->desc->num_modes;
 586	bool has_override_edid_mode = p->detected_panel &&
 587				      p->detected_panel != ERR_PTR(-EINVAL) &&
 588				      p->detected_panel->override_edid_mode;
 589
 590	/* probe EDID if a DDC bus is available */
 591	if (p->ddc) {
 592		pm_runtime_get_sync(panel->dev);
 593
 594		if (!p->drm_edid)
 595			p->drm_edid = drm_edid_read_ddc(connector, p->ddc);
 596
 597		drm_edid_connector_update(connector, p->drm_edid);
 598
 599		/*
 600		 * If both edid and hard-coded modes exists, skip edid modes to
 601		 * avoid multiple preferred modes.
 602		 */
 603		if (p->drm_edid && !has_hard_coded_modes) {
 604			if (has_override_edid_mode) {
 605				/*
 606				 * override_edid_mode is specified. Use
 607				 * override_edid_mode instead of from edid.
 608				 */
 609				num += panel_edp_override_edid_mode(p, connector,
 610						p->detected_panel->override_edid_mode);
 611			} else {
 612				num += drm_edid_connector_add_modes(connector);
 613			}
 614		}
 615
 616		pm_runtime_mark_last_busy(panel->dev);
 617		pm_runtime_put_autosuspend(panel->dev);
 618	}
 619
 620	if (has_hard_coded_modes)
 621		num += panel_edp_get_non_edid_modes(p, connector);
 622	else if (!num)
 623		dev_warn(p->base.dev, "No display modes\n");
 624
 625	/*
 626	 * TODO: Remove once all drm drivers call
 627	 * drm_connector_set_orientation_from_panel()
 628	 */
 629	drm_connector_set_panel_orientation(connector, p->orientation);
 630
 631	return num;
 632}
 633
 634static int panel_edp_get_timings(struct drm_panel *panel,
 635				 unsigned int num_timings,
 636				 struct display_timing *timings)
 637{
 638	struct panel_edp *p = to_panel_edp(panel);
 639	unsigned int i;
 640
 641	if (p->desc->num_timings < num_timings)
 642		num_timings = p->desc->num_timings;
 643
 644	if (timings)
 645		for (i = 0; i < num_timings; i++)
 646			timings[i] = p->desc->timings[i];
 647
 648	return p->desc->num_timings;
 649}
 650
 651static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)
 652{
 653	struct panel_edp *p = to_panel_edp(panel);
 654
 655	return p->orientation;
 656}
 657
 658static int detected_panel_show(struct seq_file *s, void *data)
 659{
 660	struct drm_panel *panel = s->private;
 661	struct panel_edp *p = to_panel_edp(panel);
 662
 663	if (IS_ERR(p->detected_panel))
 664		seq_puts(s, "UNKNOWN\n");
 665	else if (!p->detected_panel)
 666		seq_puts(s, "HARDCODED\n");
 667	else
 668		seq_printf(s, "%s\n", p->detected_panel->ident.name);
 669
 670	return 0;
 671}
 672
 673DEFINE_SHOW_ATTRIBUTE(detected_panel);
 674
 675static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
 676{
 677	debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
 678}
 679
 680static const struct drm_panel_funcs panel_edp_funcs = {
 681	.disable = panel_edp_disable,
 682	.unprepare = panel_edp_unprepare,
 683	.prepare = panel_edp_prepare,
 684	.enable = panel_edp_enable,
 685	.get_modes = panel_edp_get_modes,
 686	.get_orientation = panel_edp_get_orientation,
 687	.get_timings = panel_edp_get_timings,
 688	.debugfs_init = panel_edp_debugfs_init,
 689};
 690
 691#define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
 692	(to_check->field.typ >= bounds->field.min && \
 693	 to_check->field.typ <= bounds->field.max)
 694static void panel_edp_parse_panel_timing_node(struct device *dev,
 695					      struct panel_edp *panel,
 696					      const struct display_timing *ot)
 697{
 698	const struct panel_desc *desc = panel->desc;
 699	struct videomode vm;
 700	unsigned int i;
 701
 702	if (WARN_ON(desc->num_modes)) {
 703		dev_err(dev, "Reject override mode: panel has a fixed mode\n");
 704		return;
 705	}
 706	if (WARN_ON(!desc->num_timings)) {
 707		dev_err(dev, "Reject override mode: no timings specified\n");
 708		return;
 709	}
 710
 711	for (i = 0; i < panel->desc->num_timings; i++) {
 712		const struct display_timing *dt = &panel->desc->timings[i];
 713
 714		if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) ||
 715		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) ||
 716		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) ||
 717		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) ||
 718		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) ||
 719		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) ||
 720		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) ||
 721		    !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len))
 722			continue;
 723
 724		if (ot->flags != dt->flags)
 725			continue;
 726
 727		videomode_from_timing(ot, &vm);
 728		drm_display_mode_from_videomode(&vm, &panel->override_mode);
 729		panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
 730					     DRM_MODE_TYPE_PREFERRED;
 731		break;
 732	}
 733
 734	if (WARN_ON(!panel->override_mode.type))
 735		dev_err(dev, "Reject override mode: No display_timing found\n");
 736}
 737
 738static const struct edp_panel_entry *find_edp_panel(u32 panel_id, const struct drm_edid *edid);
 739
 740static void panel_edp_set_conservative_timings(struct panel_edp *panel, struct panel_desc *desc)
 741{
 742	/*
 743	 * It's highly likely that the panel will work if we use very
 744	 * conservative timings, so let's do that.
 745	 *
 746	 * Nearly all panels have a "unprepare" delay of 500 ms though
 747	 * there are a few with 1000. Let's stick 2000 in just to be
 748	 * super conservative.
 749	 *
 750	 * An "enable" delay of 80 ms seems the most common, but we'll
 751	 * throw in 200 ms to be safe.
 752	 */
 753	desc->delay.unprepare = 2000;
 754	desc->delay.enable = 200;
 755
 756	panel->detected_panel = ERR_PTR(-EINVAL);
 757}
 758
 759static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
 760{
 761	struct panel_desc *desc;
 762	const struct drm_edid *base_block;
 763	u32 panel_id;
 764	char vend[4];
 765	u16 product_id;
 766	u32 reliable_ms = 0;
 767	u32 absent_ms = 0;
 768	int ret;
 769
 770	desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
 771	if (!desc)
 772		return -ENOMEM;
 773	panel->desc = desc;
 774
 775	/*
 776	 * Read the dts properties for the initial probe. These are used by
 777	 * the runtime resume code which will get called by the
 778	 * pm_runtime_get_sync() call below.
 779	 */
 780	of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms);
 781	desc->delay.hpd_reliable = reliable_ms;
 782	of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms);
 783	desc->delay.hpd_absent = absent_ms;
 784
 785	/* Power the panel on so we can read the EDID */
 786	ret = pm_runtime_get_sync(dev);
 787	if (ret < 0) {
 788		dev_err(dev,
 789			"Couldn't power on panel to ID it; using conservative timings: %d\n",
 790			ret);
 791		panel_edp_set_conservative_timings(panel, desc);
 792		goto exit;
 793	}
 794
 795	base_block = drm_edid_read_base_block(panel->ddc);
 796	if (base_block) {
 797		panel_id = drm_edid_get_panel_id(base_block);
 798	} else {
 799		dev_err(dev, "Couldn't read EDID for ID; using conservative timings\n");
 800		panel_edp_set_conservative_timings(panel, desc);
 801		goto exit;
 802	}
 803	drm_edid_decode_panel_id(panel_id, vend, &product_id);
 804
 805	panel->detected_panel = find_edp_panel(panel_id, base_block);
 806
 807	drm_edid_free(base_block);
 808
 809	/*
 810	 * We're using non-optimized timings and want it really obvious that
 811	 * someone needs to add an entry to the table, so we'll do a WARN_ON
 812	 * splat.
 813	 */
 814	if (WARN_ON(!panel->detected_panel)) {
 815		dev_warn(dev,
 816			 "Unknown panel %s %#06x, using conservative timings\n",
 817			 vend, product_id);
 818		panel_edp_set_conservative_timings(panel, desc);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 819	} else {
 820		dev_info(dev, "Detected %s %s (%#06x)\n",
 821			 vend, panel->detected_panel->ident.name, product_id);
 822
 823		/* Update the delay; everything else comes from EDID */
 824		desc->delay = *panel->detected_panel->delay;
 825	}
 826
 
 827exit:
 828	pm_runtime_mark_last_busy(dev);
 829	pm_runtime_put_autosuspend(dev);
 830
 831	return 0;
 832}
 833
 834static int panel_edp_probe(struct device *dev, const struct panel_desc *desc,
 835			   struct drm_dp_aux *aux)
 836{
 837	struct panel_edp *panel;
 838	struct display_timing dt;
 839	struct device_node *ddc;
 840	int err;
 841
 842	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
 843	if (!panel)
 844		return -ENOMEM;
 845
 
 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
 924		/*
 925		 * Warn if we get an error, but don't consider it fatal. Having
 926		 * a panel where we can't control the backlight is better than
 927		 * no panel.
 928		 */
 929		if (err)
 930			dev_warn(dev, "failed to register dp aux backlight: %d\n", err);
 931	}
 932
 933	drm_panel_add(&panel->base);
 934
 935	return 0;
 936
 937err_finished_pm_runtime:
 938	pm_runtime_dont_use_autosuspend(dev);
 939	pm_runtime_disable(dev);
 940err_finished_ddc_init:
 941	if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
 942		put_device(&panel->ddc->dev);
 943
 944	return err;
 945}
 946
 947static void panel_edp_shutdown(struct device *dev)
 948{
 949	struct panel_edp *panel = dev_get_drvdata(dev);
 950
 951	/*
 952	 * NOTE: the following two calls don't really belong here. It is the
 953	 * responsibility of a correctly written DRM modeset driver to call
 954	 * drm_atomic_helper_shutdown() at shutdown time and that should
 955	 * cause the panel to be disabled / unprepared if needed. For now,
 956	 * however, we'll keep these calls due to the sheer number of
 957	 * different DRM modeset drivers used with panel-edp. Once we've
 958	 * confirmed that all DRM modeset drivers using this panel properly
 959	 * call drm_atomic_helper_shutdown() we can simply delete the two
 960	 * calls below.
 961	 *
 962	 * TO BE EXPLICIT: THE CALLS BELOW SHOULDN'T BE COPIED TO ANY NEW
 963	 * PANEL DRIVERS.
 964	 *
 965	 * FIXME: If we're still haven't figured out if all DRM modeset
 966	 * drivers properly call drm_atomic_helper_shutdown() but we _have_
 967	 * managed to make sure that DRM modeset drivers get their shutdown()
 968	 * callback before the panel's shutdown() callback (perhaps using
 969	 * device link), we could add a WARN_ON here to help move forward.
 970	 */
 971	if (panel->base.enabled)
 972		drm_panel_disable(&panel->base);
 973	if (panel->base.prepared)
 974		drm_panel_unprepare(&panel->base);
 975}
 976
 977static void panel_edp_remove(struct device *dev)
 978{
 979	struct panel_edp *panel = dev_get_drvdata(dev);
 980
 981	drm_panel_remove(&panel->base);
 982	panel_edp_shutdown(dev);
 
 983
 984	pm_runtime_dont_use_autosuspend(dev);
 985	pm_runtime_disable(dev);
 986	if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
 987		put_device(&panel->ddc->dev);
 988
 989	drm_edid_free(panel->drm_edid);
 990	panel->drm_edid = NULL;
 
 
 
 
 
 
 
 
 991}
 992
 993static const struct display_timing auo_b101ean01_timing = {
 994	.pixelclock = { 65300000, 72500000, 75000000 },
 995	.hactive = { 1280, 1280, 1280 },
 996	.hfront_porch = { 18, 119, 119 },
 997	.hback_porch = { 21, 21, 21 },
 998	.hsync_len = { 32, 32, 32 },
 999	.vactive = { 800, 800, 800 },
1000	.vfront_porch = { 4, 4, 4 },
1001	.vback_porch = { 8, 8, 8 },
1002	.vsync_len = { 18, 20, 20 },
1003};
1004
1005static const struct panel_desc auo_b101ean01 = {
1006	.timings = &auo_b101ean01_timing,
1007	.num_timings = 1,
1008	.bpc = 6,
1009	.size = {
1010		.width = 217,
1011		.height = 136,
1012	},
1013};
1014
1015static const struct drm_display_mode auo_b116xa3_mode = {
1016	.clock = 70589,
1017	.hdisplay = 1366,
1018	.hsync_start = 1366 + 40,
1019	.hsync_end = 1366 + 40 + 40,
1020	.htotal = 1366 + 40 + 40 + 32,
1021	.vdisplay = 768,
1022	.vsync_start = 768 + 10,
1023	.vsync_end = 768 + 10 + 12,
1024	.vtotal = 768 + 10 + 12 + 6,
1025	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1026};
1027
1028static const struct drm_display_mode auo_b116xak01_mode = {
1029	.clock = 69300,
1030	.hdisplay = 1366,
1031	.hsync_start = 1366 + 48,
1032	.hsync_end = 1366 + 48 + 32,
1033	.htotal = 1366 + 48 + 32 + 10,
1034	.vdisplay = 768,
1035	.vsync_start = 768 + 4,
1036	.vsync_end = 768 + 4 + 6,
1037	.vtotal = 768 + 4 + 6 + 15,
1038	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1039};
1040
1041static const struct panel_desc auo_b116xak01 = {
1042	.modes = &auo_b116xak01_mode,
1043	.num_modes = 1,
1044	.bpc = 6,
1045	.size = {
1046		.width = 256,
1047		.height = 144,
1048	},
1049	.delay = {
1050		.hpd_absent = 200,
1051		.unprepare = 500,
1052		.enable = 50,
1053	},
1054};
1055
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1056static const struct drm_display_mode auo_b133htn01_mode = {
1057	.clock = 150660,
1058	.hdisplay = 1920,
1059	.hsync_start = 1920 + 172,
1060	.hsync_end = 1920 + 172 + 80,
1061	.htotal = 1920 + 172 + 80 + 60,
1062	.vdisplay = 1080,
1063	.vsync_start = 1080 + 25,
1064	.vsync_end = 1080 + 25 + 10,
1065	.vtotal = 1080 + 25 + 10 + 10,
1066};
1067
1068static const struct panel_desc auo_b133htn01 = {
1069	.modes = &auo_b133htn01_mode,
1070	.num_modes = 1,
1071	.bpc = 6,
1072	.size = {
1073		.width = 293,
1074		.height = 165,
1075	},
1076	.delay = {
1077		.hpd_reliable = 105,
1078		.enable = 20,
1079		.unprepare = 50,
1080	},
1081};
1082
1083static const struct drm_display_mode auo_b133xtn01_mode = {
1084	.clock = 69500,
1085	.hdisplay = 1366,
1086	.hsync_start = 1366 + 48,
1087	.hsync_end = 1366 + 48 + 32,
1088	.htotal = 1366 + 48 + 32 + 20,
1089	.vdisplay = 768,
1090	.vsync_start = 768 + 3,
1091	.vsync_end = 768 + 3 + 6,
1092	.vtotal = 768 + 3 + 6 + 13,
1093};
1094
1095static const struct panel_desc auo_b133xtn01 = {
1096	.modes = &auo_b133xtn01_mode,
1097	.num_modes = 1,
1098	.bpc = 6,
1099	.size = {
1100		.width = 293,
1101		.height = 165,
1102	},
1103};
1104
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1105static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
1106	{
1107		.clock = 71900,
1108		.hdisplay = 1280,
1109		.hsync_start = 1280 + 48,
1110		.hsync_end = 1280 + 48 + 32,
1111		.htotal = 1280 + 48 + 32 + 80,
1112		.vdisplay = 800,
1113		.vsync_start = 800 + 3,
1114		.vsync_end = 800 + 3 + 5,
1115		.vtotal = 800 + 3 + 5 + 24,
1116	},
1117	{
1118		.clock = 57500,
1119		.hdisplay = 1280,
1120		.hsync_start = 1280 + 48,
1121		.hsync_end = 1280 + 48 + 32,
1122		.htotal = 1280 + 48 + 32 + 80,
1123		.vdisplay = 800,
1124		.vsync_start = 800 + 3,
1125		.vsync_end = 800 + 3 + 5,
1126		.vtotal = 800 + 3 + 5 + 24,
1127	},
1128};
1129
1130static const struct panel_desc boe_nv101wxmn51 = {
1131	.modes = boe_nv101wxmn51_modes,
1132	.num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
1133	.bpc = 8,
1134	.size = {
1135		.width = 217,
1136		.height = 136,
1137	},
1138	.delay = {
1139		/* TODO: should be hpd-absent and no-hpd should be set? */
1140		.hpd_reliable = 210,
1141		.enable = 50,
1142		.unprepare = 160,
1143	},
1144};
1145
1146static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
1147	{
1148		.clock = 207800,
1149		.hdisplay = 2160,
1150		.hsync_start = 2160 + 48,
1151		.hsync_end = 2160 + 48 + 32,
1152		.htotal = 2160 + 48 + 32 + 100,
1153		.vdisplay = 1440,
1154		.vsync_start = 1440 + 3,
1155		.vsync_end = 1440 + 3 + 6,
1156		.vtotal = 1440 + 3 + 6 + 31,
1157		.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1158	},
1159	{
1160		.clock = 138500,
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
1173static const struct panel_desc boe_nv110wtm_n61 = {
1174	.modes = boe_nv110wtm_n61_modes,
1175	.num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
1176	.bpc = 8,
1177	.size = {
1178		.width = 233,
1179		.height = 155,
1180	},
1181	.delay = {
1182		.hpd_absent = 200,
1183		.prepare_to_enable = 80,
1184		.enable = 50,
1185		.unprepare = 500,
1186	},
1187};
1188
1189/* Also used for boe_nv133fhm_n62 */
1190static const struct drm_display_mode boe_nv133fhm_n61_modes = {
1191	.clock = 147840,
1192	.hdisplay = 1920,
1193	.hsync_start = 1920 + 48,
1194	.hsync_end = 1920 + 48 + 32,
1195	.htotal = 1920 + 48 + 32 + 200,
1196	.vdisplay = 1080,
1197	.vsync_start = 1080 + 3,
1198	.vsync_end = 1080 + 3 + 6,
1199	.vtotal = 1080 + 3 + 6 + 31,
1200	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1201};
1202
1203/* Also used for boe_nv133fhm_n62 */
1204static const struct panel_desc boe_nv133fhm_n61 = {
1205	.modes = &boe_nv133fhm_n61_modes,
1206	.num_modes = 1,
1207	.bpc = 6,
1208	.size = {
1209		.width = 294,
1210		.height = 165,
1211	},
1212	.delay = {
1213		/*
1214		 * When power is first given to the panel there's a short
1215		 * spike on the HPD line.  It was explained that this spike
1216		 * was until the TCON data download was complete.  On
1217		 * one system this was measured at 8 ms.  We'll put 15 ms
1218		 * in the prepare delay just to be safe.  That means:
1219		 * - If HPD isn't hooked up you still have 200 ms delay.
1220		 * - If HPD is hooked up we won't try to look at it for the
1221		 *   first 15 ms.
1222		 */
1223		.hpd_reliable = 15,
1224		.hpd_absent = 200,
1225
1226		.unprepare = 500,
1227	},
1228};
1229
1230static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
1231	{
1232		.clock = 148500,
1233		.hdisplay = 1920,
1234		.hsync_start = 1920 + 48,
1235		.hsync_end = 1920 + 48 + 32,
1236		.htotal = 2200,
1237		.vdisplay = 1080,
1238		.vsync_start = 1080 + 3,
1239		.vsync_end = 1080 + 3 + 5,
1240		.vtotal = 1125,
1241	},
1242};
1243
1244static const struct panel_desc boe_nv140fhmn49 = {
1245	.modes = boe_nv140fhmn49_modes,
1246	.num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
1247	.bpc = 6,
1248	.size = {
1249		.width = 309,
1250		.height = 174,
1251	},
1252	.delay = {
1253		/* TODO: should be hpd-absent and no-hpd should be set? */
1254		.hpd_reliable = 210,
1255		.enable = 50,
1256		.unprepare = 160,
1257	},
1258};
1259
1260static const struct drm_display_mode innolux_n116bca_ea1_mode = {
1261	.clock = 76420,
1262	.hdisplay = 1366,
1263	.hsync_start = 1366 + 136,
1264	.hsync_end = 1366 + 136 + 30,
1265	.htotal = 1366 + 136 + 30 + 60,
1266	.vdisplay = 768,
1267	.vsync_start = 768 + 8,
1268	.vsync_end = 768 + 8 + 12,
1269	.vtotal = 768 + 8 + 12 + 12,
1270	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1271};
1272
1273static const struct panel_desc innolux_n116bca_ea1 = {
1274	.modes = &innolux_n116bca_ea1_mode,
1275	.num_modes = 1,
1276	.bpc = 6,
1277	.size = {
1278		.width = 256,
1279		.height = 144,
1280	},
1281	.delay = {
1282		.hpd_absent = 200,
1283		.enable = 80,
1284		.disable = 50,
1285		.unprepare = 500,
1286	},
1287};
1288
1289/*
1290 * Datasheet specifies that at 60 Hz refresh rate:
1291 * - total horizontal time: { 1506, 1592, 1716 }
1292 * - total vertical time: { 788, 800, 868 }
1293 *
1294 * ...but doesn't go into exactly how that should be split into a front
1295 * porch, back porch, or sync length.  For now we'll leave a single setting
1296 * here which allows a bit of tweaking of the pixel clock at the expense of
1297 * refresh rate.
1298 */
1299static const struct display_timing innolux_n116bge_timing = {
1300	.pixelclock = { 72600000, 76420000, 80240000 },
1301	.hactive = { 1366, 1366, 1366 },
1302	.hfront_porch = { 136, 136, 136 },
1303	.hback_porch = { 60, 60, 60 },
1304	.hsync_len = { 30, 30, 30 },
1305	.vactive = { 768, 768, 768 },
1306	.vfront_porch = { 8, 8, 8 },
1307	.vback_porch = { 12, 12, 12 },
1308	.vsync_len = { 12, 12, 12 },
1309	.flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1310};
1311
1312static const struct panel_desc innolux_n116bge = {
1313	.timings = &innolux_n116bge_timing,
1314	.num_timings = 1,
1315	.bpc = 6,
1316	.size = {
1317		.width = 256,
1318		.height = 144,
1319	},
1320};
1321
1322static const struct drm_display_mode innolux_n125hce_gn1_mode = {
1323	.clock = 162000,
1324	.hdisplay = 1920,
1325	.hsync_start = 1920 + 40,
1326	.hsync_end = 1920 + 40 + 40,
1327	.htotal = 1920 + 40 + 40 + 80,
1328	.vdisplay = 1080,
1329	.vsync_start = 1080 + 4,
1330	.vsync_end = 1080 + 4 + 4,
1331	.vtotal = 1080 + 4 + 4 + 24,
1332};
1333
1334static const struct panel_desc innolux_n125hce_gn1 = {
1335	.modes = &innolux_n125hce_gn1_mode,
1336	.num_modes = 1,
1337	.bpc = 8,
1338	.size = {
1339		.width = 276,
1340		.height = 155,
1341	},
1342};
1343
1344static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
1345	.clock = 206016,
1346	.hdisplay = 2160,
1347	.hsync_start = 2160 + 48,
1348	.hsync_end = 2160 + 48 + 32,
1349	.htotal = 2160 + 48 + 32 + 80,
1350	.vdisplay = 1440,
1351	.vsync_start = 1440 + 3,
1352	.vsync_end = 1440 + 3 + 10,
1353	.vtotal = 1440 + 3 + 10 + 27,
1354	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1355};
1356
1357static const struct panel_desc innolux_p120zdg_bf1 = {
1358	.modes = &innolux_p120zdg_bf1_mode,
1359	.num_modes = 1,
1360	.bpc = 8,
1361	.size = {
1362		.width = 254,
1363		.height = 169,
1364	},
1365	.delay = {
1366		.hpd_absent = 200,
1367		.unprepare = 500,
1368	},
1369};
1370
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1371static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
1372	.clock = 81000,
1373	.hdisplay = 1366,
1374	.hsync_start = 1366 + 40,
1375	.hsync_end = 1366 + 40 + 32,
1376	.htotal = 1366 + 40 + 32 + 62,
1377	.vdisplay = 768,
1378	.vsync_start = 768 + 5,
1379	.vsync_end = 768 + 5 + 5,
1380	.vtotal = 768 + 5 + 5 + 122,
1381	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1382};
1383
1384static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
1385	.modes = &kingdisplay_kd116n21_30nv_a010_mode,
1386	.num_modes = 1,
1387	.bpc = 6,
1388	.size = {
1389		.width = 256,
1390		.height = 144,
1391	},
1392	.delay = {
1393		.hpd_absent = 200,
1394	},
1395};
1396
1397static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
1398	.clock = 200000,
1399	.hdisplay = 1536,
1400	.hsync_start = 1536 + 12,
1401	.hsync_end = 1536 + 12 + 16,
1402	.htotal = 1536 + 12 + 16 + 48,
1403	.vdisplay = 2048,
1404	.vsync_start = 2048 + 8,
1405	.vsync_end = 2048 + 8 + 4,
1406	.vtotal = 2048 + 8 + 4 + 8,
1407	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1408};
1409
1410static const struct panel_desc lg_lp079qx1_sp0v = {
1411	.modes = &lg_lp079qx1_sp0v_mode,
1412	.num_modes = 1,
1413	.size = {
1414		.width = 129,
1415		.height = 171,
1416	},
1417};
1418
1419static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
1420	.clock = 205210,
1421	.hdisplay = 2048,
1422	.hsync_start = 2048 + 150,
1423	.hsync_end = 2048 + 150 + 5,
1424	.htotal = 2048 + 150 + 5 + 5,
1425	.vdisplay = 1536,
1426	.vsync_start = 1536 + 3,
1427	.vsync_end = 1536 + 3 + 1,
1428	.vtotal = 1536 + 3 + 1 + 9,
1429};
1430
1431static const struct panel_desc lg_lp097qx1_spa1 = {
1432	.modes = &lg_lp097qx1_spa1_mode,
1433	.num_modes = 1,
1434	.size = {
1435		.width = 208,
1436		.height = 147,
1437	},
1438};
1439
1440static const struct drm_display_mode lg_lp120up1_mode = {
1441	.clock = 162300,
1442	.hdisplay = 1920,
1443	.hsync_start = 1920 + 40,
1444	.hsync_end = 1920 + 40 + 40,
1445	.htotal = 1920 + 40 + 40 + 80,
1446	.vdisplay = 1280,
1447	.vsync_start = 1280 + 4,
1448	.vsync_end = 1280 + 4 + 4,
1449	.vtotal = 1280 + 4 + 4 + 12,
1450};
1451
1452static const struct panel_desc lg_lp120up1 = {
1453	.modes = &lg_lp120up1_mode,
1454	.num_modes = 1,
1455	.bpc = 8,
1456	.size = {
1457		.width = 267,
1458		.height = 183,
1459	},
1460};
1461
1462static const struct drm_display_mode lg_lp129qe_mode = {
1463	.clock = 285250,
1464	.hdisplay = 2560,
1465	.hsync_start = 2560 + 48,
1466	.hsync_end = 2560 + 48 + 32,
1467	.htotal = 2560 + 48 + 32 + 80,
1468	.vdisplay = 1700,
1469	.vsync_start = 1700 + 3,
1470	.vsync_end = 1700 + 3 + 10,
1471	.vtotal = 1700 + 3 + 10 + 36,
1472};
1473
1474static const struct panel_desc lg_lp129qe = {
1475	.modes = &lg_lp129qe_mode,
1476	.num_modes = 1,
1477	.bpc = 8,
1478	.size = {
1479		.width = 272,
1480		.height = 181,
1481	},
1482};
1483
1484static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
1485	{
1486		.clock = 138500,
1487		.hdisplay = 1920,
1488		.hsync_start = 1920 + 48,
1489		.hsync_end = 1920 + 48 + 32,
1490		.htotal = 1920 + 48 + 32 + 80,
1491		.vdisplay = 1080,
1492		.vsync_start = 1080 + 3,
1493		.vsync_end = 1080 + 3 + 5,
1494		.vtotal = 1080 + 3 + 5 + 23,
1495		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1496	}, {
1497		.clock = 110920,
1498		.hdisplay = 1920,
1499		.hsync_start = 1920 + 48,
1500		.hsync_end = 1920 + 48 + 32,
1501		.htotal = 1920 + 48 + 32 + 80,
1502		.vdisplay = 1080,
1503		.vsync_start = 1080 + 3,
1504		.vsync_end = 1080 + 3 + 5,
1505		.vtotal = 1080 + 3 + 5 + 23,
1506		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1507	}
1508};
1509
1510static const struct panel_desc neweast_wjfh116008a = {
1511	.modes = neweast_wjfh116008a_modes,
1512	.num_modes = 2,
1513	.bpc = 6,
1514	.size = {
1515		.width = 260,
1516		.height = 150,
1517	},
1518	.delay = {
1519		.hpd_reliable = 110,
1520		.enable = 20,
1521		.unprepare = 500,
1522	},
1523};
1524
1525static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
1526	.clock = 271560,
1527	.hdisplay = 2560,
1528	.hsync_start = 2560 + 48,
1529	.hsync_end = 2560 + 48 + 32,
1530	.htotal = 2560 + 48 + 32 + 80,
1531	.vdisplay = 1600,
1532	.vsync_start = 1600 + 2,
1533	.vsync_end = 1600 + 2 + 5,
1534	.vtotal = 1600 + 2 + 5 + 57,
1535};
1536
1537static const struct panel_desc samsung_lsn122dl01_c01 = {
1538	.modes = &samsung_lsn122dl01_c01_mode,
1539	.num_modes = 1,
1540	.size = {
1541		.width = 263,
1542		.height = 164,
1543	},
1544};
1545
1546static const struct drm_display_mode samsung_ltn140at29_301_mode = {
1547	.clock = 76300,
1548	.hdisplay = 1366,
1549	.hsync_start = 1366 + 64,
1550	.hsync_end = 1366 + 64 + 48,
1551	.htotal = 1366 + 64 + 48 + 128,
1552	.vdisplay = 768,
1553	.vsync_start = 768 + 2,
1554	.vsync_end = 768 + 2 + 5,
1555	.vtotal = 768 + 2 + 5 + 17,
1556};
1557
1558static const struct panel_desc samsung_ltn140at29_301 = {
1559	.modes = &samsung_ltn140at29_301_mode,
1560	.num_modes = 1,
1561	.bpc = 6,
1562	.size = {
1563		.width = 320,
1564		.height = 187,
1565	},
1566};
1567
1568static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
1569	.clock = 168480,
1570	.hdisplay = 1920,
1571	.hsync_start = 1920 + 48,
1572	.hsync_end = 1920 + 48 + 32,
1573	.htotal = 1920 + 48 + 32 + 80,
1574	.vdisplay = 1280,
1575	.vsync_start = 1280 + 3,
1576	.vsync_end = 1280 + 3 + 10,
1577	.vtotal = 1280 + 3 + 10 + 57,
1578	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1579};
1580
1581static const struct panel_desc sharp_ld_d5116z01b = {
1582	.modes = &sharp_ld_d5116z01b_mode,
1583	.num_modes = 1,
1584	.bpc = 8,
1585	.size = {
1586		.width = 260,
1587		.height = 120,
1588	},
1589};
1590
1591static const struct display_timing sharp_lq123p1jx31_timing = {
1592	.pixelclock = { 252750000, 252750000, 266604720 },
1593	.hactive = { 2400, 2400, 2400 },
1594	.hfront_porch = { 48, 48, 48 },
1595	.hback_porch = { 80, 80, 84 },
1596	.hsync_len = { 32, 32, 32 },
1597	.vactive = { 1600, 1600, 1600 },
1598	.vfront_porch = { 3, 3, 3 },
1599	.vback_porch = { 33, 33, 120 },
1600	.vsync_len = { 10, 10, 10 },
1601	.flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1602};
1603
1604static const struct panel_desc sharp_lq123p1jx31 = {
1605	.timings = &sharp_lq123p1jx31_timing,
1606	.num_timings = 1,
1607	.bpc = 8,
1608	.size = {
1609		.width = 259,
1610		.height = 173,
1611	},
1612	.delay = {
1613		.hpd_reliable = 110,
1614		.enable = 50,
1615		.unprepare = 550,
1616	},
1617};
1618
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1619static const struct of_device_id platform_of_match[] = {
1620	{
1621		/* Must be first */
1622		.compatible = "edp-panel",
1623	},
1624	/*
1625	 * Do not add panels to the list below unless they cannot be handled by
1626	 * the generic edp-panel compatible.
1627	 *
1628	 * The only two valid reasons are:
1629	 * - Because of the panel issues (e.g. broken EDID or broken
1630	 *   identification).
1631	 * - Because the eDP drivers didn't wire up the AUX bus properly.
1632	 *   NOTE that, though this is a marginally valid reason,
1633	 *   some justification needs to be made for why the platform can't
1634	 *   wire up the AUX bus properly.
1635	 *
1636	 * In all other cases the platform should use the aux-bus and declare
1637	 * the panel using the 'edp-panel' compatible as a device on the AUX
1638	 * bus.
1639	 */
1640	{
1641		.compatible = "auo,b101ean01",
1642		.data = &auo_b101ean01,
1643	}, {
1644		.compatible = "auo,b116xa01",
1645		.data = &auo_b116xak01,
1646	}, {
 
 
 
1647		.compatible = "auo,b133htn01",
1648		.data = &auo_b133htn01,
1649	}, {
1650		.compatible = "auo,b133xtn01",
1651		.data = &auo_b133xtn01,
1652	}, {
 
 
 
1653		.compatible = "boe,nv101wxmn51",
1654		.data = &boe_nv101wxmn51,
1655	}, {
1656		.compatible = "boe,nv110wtm-n61",
1657		.data = &boe_nv110wtm_n61,
1658	}, {
1659		.compatible = "boe,nv133fhm-n61",
1660		.data = &boe_nv133fhm_n61,
1661	}, {
1662		.compatible = "boe,nv133fhm-n62",
1663		.data = &boe_nv133fhm_n61,
1664	}, {
1665		.compatible = "boe,nv140fhmn49",
1666		.data = &boe_nv140fhmn49,
1667	}, {
1668		.compatible = "innolux,n116bca-ea1",
1669		.data = &innolux_n116bca_ea1,
1670	}, {
1671		.compatible = "innolux,n116bge",
1672		.data = &innolux_n116bge,
1673	}, {
1674		.compatible = "innolux,n125hce-gn1",
1675		.data = &innolux_n125hce_gn1,
1676	}, {
1677		.compatible = "innolux,p120zdg-bf1",
1678		.data = &innolux_p120zdg_bf1,
1679	}, {
 
 
 
1680		.compatible = "kingdisplay,kd116n21-30nv-a010",
1681		.data = &kingdisplay_kd116n21_30nv_a010,
1682	}, {
1683		.compatible = "lg,lp079qx1-sp0v",
1684		.data = &lg_lp079qx1_sp0v,
1685	}, {
1686		.compatible = "lg,lp097qx1-spa1",
1687		.data = &lg_lp097qx1_spa1,
1688	}, {
1689		.compatible = "lg,lp120up1",
1690		.data = &lg_lp120up1,
1691	}, {
1692		.compatible = "lg,lp129qe",
1693		.data = &lg_lp129qe,
1694	}, {
1695		.compatible = "neweast,wjfh116008a",
1696		.data = &neweast_wjfh116008a,
1697	}, {
1698		.compatible = "samsung,lsn122dl01-c01",
1699		.data = &samsung_lsn122dl01_c01,
1700	}, {
1701		.compatible = "samsung,ltn140at29-301",
1702		.data = &samsung_ltn140at29_301,
1703	}, {
1704		.compatible = "sharp,ld-d5116z01b",
1705		.data = &sharp_ld_d5116z01b,
1706	}, {
1707		.compatible = "sharp,lq123p1jx31",
1708		.data = &sharp_lq123p1jx31,
1709	}, {
 
 
 
 
 
 
1710		/* sentinel */
1711	}
1712};
1713MODULE_DEVICE_TABLE(of, platform_of_match);
1714
1715static const struct panel_delay delay_200_500_p2e80 = {
1716	.hpd_absent = 200,
1717	.unprepare = 500,
1718	.prepare_to_enable = 80,
1719};
1720
1721static const struct panel_delay delay_200_500_e50_p2e80 = {
1722	.hpd_absent = 200,
1723	.unprepare = 500,
1724	.enable = 50,
1725	.prepare_to_enable = 80,
1726};
1727
1728static const struct panel_delay delay_200_500_p2e100 = {
1729	.hpd_absent = 200,
1730	.unprepare = 500,
1731	.prepare_to_enable = 100,
1732};
1733
1734static const struct panel_delay delay_200_500_e50 = {
1735	.hpd_absent = 200,
1736	.unprepare = 500,
1737	.enable = 50,
1738};
1739
1740static const struct panel_delay delay_200_500_e50_p2e200 = {
1741	.hpd_absent = 200,
1742	.unprepare = 500,
1743	.enable = 50,
1744	.prepare_to_enable = 200,
1745};
1746
1747static const struct panel_delay delay_200_500_e80 = {
1748	.hpd_absent = 200,
1749	.unprepare = 500,
1750	.enable = 80,
1751};
1752
1753static const struct panel_delay delay_200_500_e80_d50 = {
1754	.hpd_absent = 200,
1755	.unprepare = 500,
1756	.enable = 80,
1757	.disable = 50,
1758};
1759
1760static const struct panel_delay delay_80_500_e50 = {
1761	.hpd_absent = 80,
1762	.unprepare = 500,
1763	.enable = 50,
1764};
1765
1766static const struct panel_delay delay_100_500_e200 = {
1767	.hpd_absent = 100,
1768	.unprepare = 500,
1769	.enable = 200,
1770};
1771
1772static const struct panel_delay delay_200_500_e200 = {
1773	.hpd_absent = 200,
1774	.unprepare = 500,
1775	.enable = 200,
1776};
1777
1778static const struct panel_delay delay_200_500_e200_d200 = {
1779	.hpd_absent = 200,
1780	.unprepare = 500,
1781	.enable = 200,
1782	.disable = 200,
1783};
1784
1785static const struct panel_delay delay_200_500_e200_d10 = {
1786	.hpd_absent = 200,
1787	.unprepare = 500,
1788	.enable = 200,
1789	.disable = 10,
1790};
1791
1792static const struct panel_delay delay_200_150_e200 = {
1793	.hpd_absent = 200,
1794	.unprepare = 150,
1795	.enable = 200,
1796};
1797
1798static const struct panel_delay delay_200_500_e50_po2e200 = {
1799	.hpd_absent = 200,
1800	.unprepare = 500,
1801	.enable = 50,
1802	.powered_on_to_enable = 200,
1803};
1804
1805#define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
1806{ \
1807	.ident = { \
1808		.name = _name, \
1809		.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1810						     product_id), \
1811	}, \
1812	.delay = _delay \
1813}
1814
1815#define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \
1816{ \
1817	.ident = { \
1818		.name = _name, \
1819		.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1820						     product_id), \
1821	}, \
1822	.delay = _delay, \
1823	.override_edid_mode = _mode \
1824}
1825
1826/*
1827 * This table is used to figure out power sequencing delays for panels that
1828 * are detected by EDID. Entries here may point to entries in the
1829 * platform_of_match table (if a panel is listed in both places).
1830 *
1831 * Sort first by vendor, then by product ID.
1832 */
1833static const struct edp_panel_entry edp_panels[] = {
1834	EDP_PANEL_ENTRY('A', 'U', 'O', 0x105c, &delay_200_500_e50, "B116XTN01.0"),
1835	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
1836	EDP_PANEL_ENTRY('A', 'U', 'O', 0x125c, &delay_200_500_e50, "Unknown"),
1837	EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"),
1838	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1999, &delay_200_500_e50, "Unknown"),
1839	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
1840	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
1841	EDP_PANEL_ENTRY('A', 'U', 'O', 0x203d, &delay_200_500_e50, "B140HTN02.0"),
1842	EDP_PANEL_ENTRY('A', 'U', 'O', 0x208d, &delay_200_500_e50, "B140HTN02.1"),
1843	EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"),
1844	EDP_PANEL_ENTRY('A', 'U', 'O', 0x239b, &delay_200_500_e50, "B116XAN06.1"),
1845	EDP_PANEL_ENTRY('A', 'U', 'O', 0x255c, &delay_200_500_e50, "B116XTN02.5"),
1846	EDP_PANEL_ENTRY('A', 'U', 'O', 0x403d, &delay_200_500_e50, "B140HAN04.0"),
1847	EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAN04.0"),
1848	EDP_PANEL_ENTRY2('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0",
1849			 &auo_b116xa3_mode),
1850	EDP_PANEL_ENTRY('A', 'U', 'O', 0x435c, &delay_200_500_e50, "Unknown"),
1851	EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"),
1852	EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
1853	EDP_PANEL_ENTRY('A', 'U', 'O', 0x635c, &delay_200_500_e50, "B116XAN06.3"),
1854	EDP_PANEL_ENTRY('A', 'U', 'O', 0x639c, &delay_200_500_e50, "B140HAK02.7"),
1855	EDP_PANEL_ENTRY('A', 'U', 'O', 0x723c, &delay_200_500_e50, "B140XTN07.2"),
1856	EDP_PANEL_ENTRY('A', 'U', 'O', 0x73aa, &delay_200_500_e50, "B116XTN02.3"),
1857	EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
1858	EDP_PANEL_ENTRY('A', 'U', 'O', 0xa199, &delay_200_500_e50, "B116XAN06.1"),
1859	EDP_PANEL_ENTRY('A', 'U', 'O', 0xc4b4, &delay_200_500_e50, "B116XAT04.1"),
1860	EDP_PANEL_ENTRY('A', 'U', 'O', 0xd497, &delay_200_500_e50, "B120XAN01.0"),
1861	EDP_PANEL_ENTRY('A', 'U', 'O', 0xf390, &delay_200_500_e50, "B140XTN07.7"),
1862
1863	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0607, &delay_200_500_e200, "Unknown"),
1864	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0608, &delay_200_500_e50, "NT116WHM-N11"),
1865	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0609, &delay_200_500_e50_po2e200, "NT116WHM-N21 V4.1"),
1866	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0623, &delay_200_500_e200, "NT116WHM-N21 V4.0"),
1867	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0668, &delay_200_500_e200, "Unknown"),
1868	EDP_PANEL_ENTRY('B', 'O', 'E', 0x068f, &delay_200_500_e200, "Unknown"),
1869	EDP_PANEL_ENTRY('B', 'O', 'E', 0x06e5, &delay_200_500_e200, "Unknown"),
1870	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0705, &delay_200_500_e200, "Unknown"),
1871	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0715, &delay_200_150_e200, "NT116WHM-N21"),
1872	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0717, &delay_200_500_e50_po2e200, "NV133FHM-N42"),
1873	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0731, &delay_200_500_e80, "NT116WHM-N42"),
1874	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0741, &delay_200_500_e200, "NT116WHM-N44"),
1875	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0744, &delay_200_500_e200, "Unknown"),
1876	EDP_PANEL_ENTRY('B', 'O', 'E', 0x074c, &delay_200_500_e200, "Unknown"),
1877	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0751, &delay_200_500_e200, "Unknown"),
1878	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0754, &delay_200_500_e50_po2e200, "NV116WHM-N45"),
1879	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0771, &delay_200_500_e200, "Unknown"),
1880	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
1881	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0797, &delay_200_500_e200, "Unknown"),
1882	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07a8, &delay_200_500_e50_po2e200, "NT116WHM-N21"),
1883	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
1884	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d3, &delay_200_500_e200, "Unknown"),
1885	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07f6, &delay_200_500_e200, "NT140FHM-N44"),
1886	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07f8, &delay_200_500_e200, "Unknown"),
1887	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0813, &delay_200_500_e200, "Unknown"),
1888	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0827, &delay_200_500_e50_p2e80, "NT140WHM-N44 V8.0"),
1889	EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
1890	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0843, &delay_200_500_e200, "Unknown"),
1891	EDP_PANEL_ENTRY('B', 'O', 'E', 0x08b2, &delay_200_500_e200, "NT140WHM-N49"),
1892	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0848, &delay_200_500_e200, "Unknown"),
1893	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0849, &delay_200_500_e200, "Unknown"),
1894	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"),
1895	EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"),
1896	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0951, &delay_200_500_e80, "NV116WHM-N47"),
1897	EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"),
1898	EDP_PANEL_ENTRY('B', 'O', 'E', 0x096e, &delay_200_500_e50_po2e200, "NV116WHM-T07 V8.0"),
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', 0x0993, &delay_200_500_e80, "NV116WHM-T14 V8.0"),
1902	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09ad, &delay_200_500_e80, "NV116WHM-N47"),
1903	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09ae, &delay_200_500_e200, "NT140FHM-N45"),
1904	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
1905	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a1b, &delay_200_500_e50, "NV133WUM-N63"),
1906	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a36, &delay_200_500_e200, "Unknown"),
1907	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80, "NV116WHM-N49"),
1908	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
1909	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
1910	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ae8, &delay_200_500_e50_p2e80, "NV140WUM-N41"),
1911	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80, "NV122WUM-N41"),
1912	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b43, &delay_200_500_e200, "NV140FHM-T09"),
1913	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b56, &delay_200_500_e80, "NT140FHM-N47"),
1914	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b66, &delay_200_500_e80, "NE140WUM-N6G"),
1915	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0c20, &delay_200_500_e80, "NT140FHM-N47"),
1916	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cb6, &delay_200_500_e200, "NT116WHM-N44"),
1917	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cfa, &delay_200_500_e50, "NV116WHM-A4D"),
1918
1919	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1130, &delay_200_500_e50, "N116BGE-EB2"),
1920	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1132, &delay_200_500_e80_d50, "N116BGE-EA2"),
1921	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1138, &innolux_n116bca_ea1.delay, "N116BCA-EA1-RC4"),
1922	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"),
1923	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1141, &delay_200_500_e80_d50, "Unknown"),
1924	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1145, &delay_200_500_e80_d50, "N116BCN-EB1"),
1925	EDP_PANEL_ENTRY('C', 'M', 'N', 0x114a, &delay_200_500_e80_d50, "Unknown"),
1926	EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
1927	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"),
1928	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"),
1929	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"),
1930	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1156, &delay_200_500_e80_d50, "Unknown"),
1931	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1157, &delay_200_500_e80_d50, "N116BGE-EA2"),
1932	EDP_PANEL_ENTRY('C', 'M', 'N', 0x115b, &delay_200_500_e80_d50, "N116BCN-EB1"),
1933	EDP_PANEL_ENTRY('C', 'M', 'N', 0x115d, &delay_200_500_e80_d50, "N116BCA-EA2"),
1934	EDP_PANEL_ENTRY('C', 'M', 'N', 0x115e, &delay_200_500_e80_d50, "N116BCA-EA1"),
1935	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1160, &delay_200_500_e80_d50, "N116BCJ-EAK"),
1936	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1161, &delay_200_500_e80, "N116BCP-EA2"),
1937	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
1938	EDP_PANEL_ENTRY('C', 'M', 'N', 0x142b, &delay_200_500_e80_d50, "N140HCA-EAC"),
1939	EDP_PANEL_ENTRY('C', 'M', 'N', 0x142e, &delay_200_500_e80_d50, "N140BGA-EA4"),
1940	EDP_PANEL_ENTRY('C', 'M', 'N', 0x144f, &delay_200_500_e80_d50, "N140HGA-EA1"),
1941	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1468, &delay_200_500_e80, "N140HGA-EA1"),
1942	EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"),
1943	EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d6, &delay_200_500_e80_d50, "N140BGA-EA4"),
1944	EDP_PANEL_ENTRY('C', 'M', 'N', 0x14e5, &delay_200_500_e80_d50, "N140HGA-EA1"),
1945
1946	EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_p2e200, "MNC207QS1-1"),
1947
1948	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1100, &delay_200_500_e80_d50, "MNB601LS1-1"),
1949	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1104, &delay_200_500_e50, "MNB601LS1-4"),
1950
1951	EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d51, &delay_200_500_e200, "Unknown"),
1952	EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5b, &delay_200_500_e200, "MB116AN01"),
1953	EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5c, &delay_200_500_e200, "MB116AN01-2"),
1954
1955	EDP_PANEL_ENTRY('I', 'V', 'O', 0x048e, &delay_200_500_e200_d10, "M116NWR6 R5"),
1956	EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
1957	EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"),
1958	EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"),
1959	EDP_PANEL_ENTRY('I', 'V', 'O', 0x8c4d, &delay_200_150_e200, "R140NWFM R1"),
1960
1961	EDP_PANEL_ENTRY('K', 'D', 'B', 0x044f, &delay_200_500_e80_d50, "Unknown"),
1962	EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
1963	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1118, &delay_200_500_e50, "KD116N29-30NK-A005"),
1964	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
1965	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1212, &delay_200_500_e50, "KD116N0930A16"),
1966
1967	EDP_PANEL_ENTRY('K', 'D', 'C', 0x044f, &delay_200_500_e50, "KD116N9-30NH-F3"),
1968	EDP_PANEL_ENTRY('K', 'D', 'C', 0x05f1, &delay_200_500_e80_d50, "KD116N5-30NV-G7"),
1969	EDP_PANEL_ENTRY('K', 'D', 'C', 0x0809, &delay_200_500_e50, "KD116N2930A15"),
1970
1971	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0000, &delay_200_500_e200_d200, "Unknown"),
1972	EDP_PANEL_ENTRY('L', 'G', 'D', 0x048d, &delay_200_500_e200_d200, "Unknown"),
1973	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0497, &delay_200_500_e200_d200, "LP116WH7-SPB1"),
1974	EDP_PANEL_ENTRY('L', 'G', 'D', 0x052c, &delay_200_500_e200_d200, "LP133WF2-SPL7"),
1975	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0537, &delay_200_500_e200_d200, "Unknown"),
1976	EDP_PANEL_ENTRY('L', 'G', 'D', 0x054a, &delay_200_500_e200_d200, "LP116WH8-SPC1"),
1977	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0567, &delay_200_500_e200_d200, "Unknown"),
1978	EDP_PANEL_ENTRY('L', 'G', 'D', 0x05af, &delay_200_500_e200_d200, "Unknown"),
1979	EDP_PANEL_ENTRY('L', 'G', 'D', 0x05f1, &delay_200_500_e200_d200, "Unknown"),
1980	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0778, &delay_200_500_e200_d200, "134WT1"),
 
1981
1982	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
1983	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &delay_80_500_e50, "LQ140M1JW46"),
1984	EDP_PANEL_ENTRY('S', 'H', 'P', 0x153a, &delay_200_500_e50, "LQ140T1JH01"),
1985	EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
1986	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1593, &delay_200_500_p2e100, "LQ134N1"),
1987
1988	EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
1989
1990	{ /* sentinal */ }
1991};
1992
1993static const struct edp_panel_entry *find_edp_panel(u32 panel_id, const struct drm_edid *edid)
1994{
1995	const struct edp_panel_entry *panel;
1996
1997	if (!panel_id)
1998		return NULL;
1999
2000	/*
2001	 * Match with identity first. This allows handling the case where
2002	 * vendors incorrectly reused the same panel ID for multiple panels that
2003	 * need different settings. If there's no match, try again with panel
2004	 * ID, which should be unique.
2005	 */
2006	for (panel = edp_panels; panel->ident.panel_id; panel++)
2007		if (drm_edid_match(edid, &panel->ident))
2008			return panel;
2009
2010	for (panel = edp_panels; panel->ident.panel_id; panel++)
2011		if (panel->ident.panel_id == panel_id)
2012			return panel;
2013
2014	return NULL;
2015}
2016
2017static int panel_edp_platform_probe(struct platform_device *pdev)
2018{
2019	const struct of_device_id *id;
2020
2021	/* Skip one since "edp-panel" is only supported on DP AUX bus */
2022	id = of_match_node(platform_of_match + 1, pdev->dev.of_node);
2023	if (!id)
2024		return -ENODEV;
2025
2026	return panel_edp_probe(&pdev->dev, id->data, NULL);
2027}
2028
2029static void panel_edp_platform_remove(struct platform_device *pdev)
2030{
2031	panel_edp_remove(&pdev->dev);
2032}
2033
2034static void panel_edp_platform_shutdown(struct platform_device *pdev)
2035{
2036	panel_edp_shutdown(&pdev->dev);
2037}
2038
2039static const struct dev_pm_ops panel_edp_pm_ops = {
2040	SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
2041	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
2042				pm_runtime_force_resume)
2043};
2044
2045static struct platform_driver panel_edp_platform_driver = {
2046	.driver = {
2047		.name = "panel-edp",
2048		.of_match_table = platform_of_match,
2049		.pm = &panel_edp_pm_ops,
2050	},
2051	.probe = panel_edp_platform_probe,
2052	.remove = panel_edp_platform_remove,
2053	.shutdown = panel_edp_platform_shutdown,
2054};
2055
2056static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
2057{
2058	const struct of_device_id *id;
2059
2060	id = of_match_node(platform_of_match, aux_ep->dev.of_node);
2061	if (!id)
2062		return -ENODEV;
2063
2064	return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux);
2065}
2066
2067static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
2068{
2069	panel_edp_remove(&aux_ep->dev);
2070}
2071
2072static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
2073{
2074	panel_edp_shutdown(&aux_ep->dev);
2075}
2076
2077static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
2078	.driver = {
2079		.name = "panel-simple-dp-aux",
2080		.of_match_table = platform_of_match,	/* Same as platform one! */
2081		.pm = &panel_edp_pm_ops,
2082	},
2083	.probe = panel_edp_dp_aux_ep_probe,
2084	.remove = panel_edp_dp_aux_ep_remove,
2085	.shutdown = panel_edp_dp_aux_ep_shutdown,
2086};
2087
2088static int __init panel_edp_init(void)
2089{
2090	int err;
2091
2092	err = platform_driver_register(&panel_edp_platform_driver);
2093	if (err < 0)
2094		return err;
2095
2096	err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
2097	if (err < 0)
2098		goto err_did_platform_register;
2099
2100	return 0;
2101
2102err_did_platform_register:
2103	platform_driver_unregister(&panel_edp_platform_driver);
2104
2105	return err;
2106}
2107module_init(panel_edp_init);
2108
2109static void __exit panel_edp_exit(void)
2110{
2111	dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver);
2112	platform_driver_unregister(&panel_edp_platform_driver);
2113}
2114module_exit(panel_edp_exit);
2115
2116MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
2117MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
2118MODULE_LICENSE("GPL and additional rights");