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	* @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	*/
165	struct 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	*/
212	struct 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
223	struct 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
249	static inline struct panel_edp *to_panel_edp(struct drm_panel *panel)
250	{
251	return container_of(panel, struct panel_edp, base);
252	}
253
254	static 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: &vm);
265	mode = drm_mode_create(dev: 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: &vm, dmode: 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
286	static 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(dev: connector->dev, mode: 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
317	static 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(dev: connector->dev, mode: 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
335	static 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(dev: connector->dev,
347	mode: &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
377	static 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(cmp1: now_ktime, cmp2: min_ktime))
388	msleep(msecs: ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
389	}
390
391	static 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(msecs: p->desc->delay.disable);
397
398	return 0;
399	}
400
401	static int panel_edp_suspend(struct device *dev)
402	{
403	struct panel_edp *p = dev_get_drvdata(dev);
404
405	drm_dp_dpcd_set_powered(aux: p->aux, powered: false);
406	gpiod_set_value_cansleep(desc: p->enable_gpio, value: 0);
407	regulator_disable(regulator: p->supply);
408	p->unprepared_time = ktime_get_boottime();
409
410	return 0;
411	}
412
413	static int panel_edp_unprepare(struct drm_panel *panel)
414	{
415	int ret;
416
417	ret = pm_runtime_put_sync_suspend(dev: panel->dev);
418	if (ret < 0)
419	return ret;
420
421	return 0;
422	}
423
424	static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p)
425	{
426	p->hpd_gpio = devm_gpiod_get_optional(dev, con_id: "hpd", flags: GPIOD_IN);
427	if (IS_ERR(ptr: p->hpd_gpio))
428	return dev_err_probe(dev, err: PTR_ERR(ptr: p->hpd_gpio),
429	fmt: "failed to get 'hpd' GPIO\n");
430
431	return 0;
432	}
433
434	static 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
439	static 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(start_ktime: p->unprepared_time, min_ms: p->desc->delay.unprepare);
448
449	err = regulator_enable(regulator: 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(desc: p->enable_gpio, value: 1);
456	drm_dp_dpcd_set_powered(aux: p->aux, powered: 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(msecs: 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
494	error:
495	drm_dp_dpcd_set_powered(aux: p->aux, powered: false);
496	gpiod_set_value_cansleep(desc: p->enable_gpio, value: 0);
497	regulator_disable(regulator: 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
509	static 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
529	static int panel_edp_prepare(struct drm_panel *panel)
530	{
531	int ret;
532
533	ret = pm_runtime_get_sync(dev: panel->dev);
534	if (ret < 0) {
535	pm_runtime_put_autosuspend(dev: panel->dev);
536	return ret;
537	}
538
539	return 0;
540	}
541
542	static 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(msecs: delay);
572
573	panel_edp_wait(start_ktime: p->prepared_time, min_ms: p->desc->delay.prepare_to_enable);
574
575	panel_edp_wait(start_ktime: p->powered_on_time, min_ms: p->desc->delay.powered_on_to_enable);
576
577	return 0;
578	}
579
580	static 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(error: -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(dev: panel->dev);
593
594	if (!p->drm_edid)
595	p->drm_edid = drm_edid_read_ddc(connector, adapter: p->ddc);
596
597	drm_edid_connector_update(connector, edid: 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(panel: p, connector,
610	override_mode: 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(dev: panel->dev);
617	pm_runtime_put_autosuspend(dev: panel->dev);
618	}
619
620	if (has_hard_coded_modes)
621	num += panel_edp_get_non_edid_modes(panel: 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, panel_orientation: p->orientation);
630
631	return num;
632	}
633
634	static 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
651	static 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
658	static 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(ptr: p->detected_panel))
664	seq_puts(m: s, s: "UNKNOWN\n");
665	else if (!p->detected_panel)
666	seq_puts(m: s, s: "HARDCODED\n");
667	else
668	seq_printf(m: s, fmt: "%s\n", p->detected_panel->ident.name);
669
670	return 0;
671	}
672
673	DEFINE_SHOW_ATTRIBUTE(detected_panel);
674
675	static 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
680	static 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)
694	static 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(dt: ot, vm: &vm);
728	drm_display_mode_from_videomode(vm: &vm, dmode: &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
738	static const struct edp_panel_entry *find_edp_panel(u32 panel_id, const struct drm_edid *edid);
739
740	static 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(error: -EINVAL);
757	}
758
759	static 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, size: 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(np: dev->of_node, propname: "hpd-reliable-delay-ms", out_value: &reliable_ms);
781	desc->delay.hpd_reliable = reliable_ms;
782	of_property_read_u32(np: dev->of_node, propname: "hpd-absent-delay-ms", out_value: &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(adapter: panel->ddc);
796	if (base_block) {
797	panel_id = drm_edid_get_panel_id(drm_edid: 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: &product_id);
804
805	panel->detected_panel = find_edp_panel(panel_id, edid: base_block);
806
807	drm_edid_free(drm_edid: 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
827	exit:
828	pm_runtime_mark_last_busy(dev);
829	pm_runtime_put_autosuspend(dev);
830
831	return 0;
832	}
833
834	static 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_drm_panel_alloc(dev, struct panel_edp, base,
843	&panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);
844	if (IS_ERR(ptr: panel))
845	return PTR_ERR(ptr: panel);
846
847	panel->prepared_time = 0;
848	panel->desc = desc;
849	panel->aux = aux;
850
851	panel->no_hpd = of_property_read_bool(np: dev->of_node, propname: "no-hpd");
852	if (!panel->no_hpd) {
853	err = panel_edp_get_hpd_gpio(dev, p: panel);
854	if (err)
855	return err;
856	}
857
858	panel->supply = devm_regulator_get(dev, id: "power");
859	if (IS_ERR(ptr: panel->supply))
860	return PTR_ERR(ptr: panel->supply);
861
862	panel->enable_gpio = devm_gpiod_get_optional(dev, con_id: "enable",
863	flags: GPIOD_OUT_LOW);
864	if (IS_ERR(ptr: panel->enable_gpio))
865	return dev_err_probe(dev, err: PTR_ERR(ptr: panel->enable_gpio),
866	fmt: "failed to request GPIO\n");
867
868	err = of_drm_get_panel_orientation(np: dev->of_node, orientation: &panel->orientation);
869	if (err) {
870	dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
871	return err;
872	}
873
874	ddc = of_parse_phandle(np: dev->of_node, phandle_name: "ddc-i2c-bus", index: 0);
875	if (ddc) {
876	panel->ddc = of_find_i2c_adapter_by_node(node: ddc);
877	of_node_put(node: ddc);
878
879	if (!panel->ddc)
880	return -EPROBE_DEFER;
881	} else if (aux) {
882	panel->ddc = &aux->ddc;
883	}
884
885	if (!of_get_display_timing(np: dev->of_node, name: "panel-timing", dt: &dt))
886	panel_edp_parse_panel_timing_node(dev, panel, ot: &dt);
887
888	dev_set_drvdata(dev, data: panel);
889
890	err = drm_panel_of_backlight(panel: &panel->base);
891	if (err)
892	goto err_finished_ddc_init;
893
894	/*
895	* We use runtime PM for prepare / unprepare since those power the panel
896	* on and off and those can be very slow operations. This is important
897	* to optimize powering the panel on briefly to read the EDID before
898	* fully enabling the panel.
899	*/
900	pm_runtime_enable(dev);
901	pm_runtime_set_autosuspend_delay(dev, delay: 1000);
902	pm_runtime_use_autosuspend(dev);
903
904	if (of_device_is_compatible(device: dev->of_node, "edp-panel")) {
905	err = generic_edp_panel_probe(dev, panel);
906	if (err) {
907	dev_err_probe(dev, err,
908	fmt: "Couldn't detect panel nor find a fallback\n");
909	goto err_finished_pm_runtime;
910	}
911	/* generic_edp_panel_probe() replaces desc in the panel */
912	desc = panel->desc;
913	} else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) {
914	dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc);
915	}
916
917	if (!panel->base.backlight && panel->aux) {
918	pm_runtime_get_sync(dev);
919	err = drm_panel_dp_aux_backlight(panel: &panel->base, aux: panel->aux);
920	pm_runtime_mark_last_busy(dev);
921	pm_runtime_put_autosuspend(dev);
922
923	/*
924	* Warn if we get an error, but don't consider it fatal. Having
925	* a panel where we can't control the backlight is better than
926	* no panel.
927	*/
928	if (err)
929	dev_warn(dev, "failed to register dp aux backlight: %d\n", err);
930	}
931
932	drm_panel_add(panel: &panel->base);
933
934	return 0;
935
936	err_finished_pm_runtime:
937	pm_runtime_dont_use_autosuspend(dev);
938	pm_runtime_disable(dev);
939	err_finished_ddc_init:
940	if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
941	put_device(dev: &panel->ddc->dev);
942
943	return err;
944	}
945
946	static void panel_edp_shutdown(struct device *dev)
947	{
948	struct panel_edp *panel = dev_get_drvdata(dev);
949
950	/*
951	* NOTE: the following two calls don't really belong here. It is the
952	* responsibility of a correctly written DRM modeset driver to call
953	* drm_atomic_helper_shutdown() at shutdown time and that should
954	* cause the panel to be disabled / unprepared if needed. For now,
955	* however, we'll keep these calls due to the sheer number of
956	* different DRM modeset drivers used with panel-edp. Once we've
957	* confirmed that all DRM modeset drivers using this panel properly
958	* call drm_atomic_helper_shutdown() we can simply delete the two
959	* calls below.
960	*
961	* TO BE EXPLICIT: THE CALLS BELOW SHOULDN'T BE COPIED TO ANY NEW
962	* PANEL DRIVERS.
963	*
964	* FIXME: If we're still haven't figured out if all DRM modeset
965	* drivers properly call drm_atomic_helper_shutdown() but we _have_
966	* managed to make sure that DRM modeset drivers get their shutdown()
967	* callback before the panel's shutdown() callback (perhaps using
968	* device link), we could add a WARN_ON here to help move forward.
969	*/
970	if (panel->base.enabled)
971	drm_panel_disable(panel: &panel->base);
972	if (panel->base.prepared)
973	drm_panel_unprepare(panel: &panel->base);
974	}
975
976	static void panel_edp_remove(struct device *dev)
977	{
978	struct panel_edp *panel = dev_get_drvdata(dev);
979
980	drm_panel_remove(panel: &panel->base);
981	panel_edp_shutdown(dev);
982
983	pm_runtime_dont_use_autosuspend(dev);
984	pm_runtime_disable(dev);
985	if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
986	put_device(dev: &panel->ddc->dev);
987
988	drm_edid_free(drm_edid: panel->drm_edid);
989	panel->drm_edid = NULL;
990	}
991
992	static const struct display_timing auo_b101ean01_timing = {
993	.pixelclock = { 65300000, 72500000, 75000000 },
994	.hactive = { 1280, 1280, 1280 },
995	.hfront_porch = { 18, 119, 119 },
996	.hback_porch = { 21, 21, 21 },
997	.hsync_len = { 32, 32, 32 },
998	.vactive = { 800, 800, 800 },
999	.vfront_porch = { 4, 4, 4 },
1000	.vback_porch = { 8, 8, 8 },
1001	.vsync_len = { 18, 20, 20 },
1002	};
1003
1004	static const struct panel_desc auo_b101ean01 = {
1005	.timings = &auo_b101ean01_timing,
1006	.num_timings = 1,
1007	.bpc = 6,
1008	.size = {
1009	.width = 217,
1010	.height = 136,
1011	},
1012	};
1013
1014	static const struct drm_display_mode auo_b116xa3_mode = {
1015	.clock = 70589,
1016	.hdisplay = 1366,
1017	.hsync_start = 1366 + 40,
1018	.hsync_end = 1366 + 40 + 40,
1019	.htotal = 1366 + 40 + 40 + 32,
1020	.vdisplay = 768,
1021	.vsync_start = 768 + 10,
1022	.vsync_end = 768 + 10 + 12,
1023	.vtotal = 768 + 10 + 12 + 6,
1024	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1025	};
1026
1027	static const struct drm_display_mode auo_b116xak01_mode = {
1028	.clock = 69300,
1029	.hdisplay = 1366,
1030	.hsync_start = 1366 + 48,
1031	.hsync_end = 1366 + 48 + 32,
1032	.htotal = 1366 + 48 + 32 + 10,
1033	.vdisplay = 768,
1034	.vsync_start = 768 + 4,
1035	.vsync_end = 768 + 4 + 6,
1036	.vtotal = 768 + 4 + 6 + 15,
1037	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1038	};
1039
1040	static const struct panel_desc auo_b116xak01 = {
1041	.modes = &auo_b116xak01_mode,
1042	.num_modes = 1,
1043	.bpc = 6,
1044	.size = {
1045	.width = 256,
1046	.height = 144,
1047	},
1048	.delay = {
1049	.hpd_absent = 200,
1050	.unprepare = 500,
1051	.enable = 50,
1052	},
1053	};
1054
1055	static const struct drm_display_mode auo_b133htn01_mode = {
1056	.clock = 150660,
1057	.hdisplay = 1920,
1058	.hsync_start = 1920 + 172,
1059	.hsync_end = 1920 + 172 + 80,
1060	.htotal = 1920 + 172 + 80 + 60,
1061	.vdisplay = 1080,
1062	.vsync_start = 1080 + 25,
1063	.vsync_end = 1080 + 25 + 10,
1064	.vtotal = 1080 + 25 + 10 + 10,
1065	};
1066
1067	static const struct panel_desc auo_b133htn01 = {
1068	.modes = &auo_b133htn01_mode,
1069	.num_modes = 1,
1070	.bpc = 6,
1071	.size = {
1072	.width = 293,
1073	.height = 165,
1074	},
1075	.delay = {
1076	.hpd_reliable = 105,
1077	.enable = 20,
1078	.unprepare = 50,
1079	},
1080	};
1081
1082	static const struct drm_display_mode auo_b133xtn01_mode = {
1083	.clock = 69500,
1084	.hdisplay = 1366,
1085	.hsync_start = 1366 + 48,
1086	.hsync_end = 1366 + 48 + 32,
1087	.htotal = 1366 + 48 + 32 + 20,
1088	.vdisplay = 768,
1089	.vsync_start = 768 + 3,
1090	.vsync_end = 768 + 3 + 6,
1091	.vtotal = 768 + 3 + 6 + 13,
1092	};
1093
1094	static const struct panel_desc auo_b133xtn01 = {
1095	.modes = &auo_b133xtn01_mode,
1096	.num_modes = 1,
1097	.bpc = 6,
1098	.size = {
1099	.width = 293,
1100	.height = 165,
1101	},
1102	};
1103
1104	static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
1105	{
1106	.clock = 71900,
1107	.hdisplay = 1280,
1108	.hsync_start = 1280 + 48,
1109	.hsync_end = 1280 + 48 + 32,
1110	.htotal = 1280 + 48 + 32 + 80,
1111	.vdisplay = 800,
1112	.vsync_start = 800 + 3,
1113	.vsync_end = 800 + 3 + 5,
1114	.vtotal = 800 + 3 + 5 + 24,
1115	},
1116	{
1117	.clock = 57500,
1118	.hdisplay = 1280,
1119	.hsync_start = 1280 + 48,
1120	.hsync_end = 1280 + 48 + 32,
1121	.htotal = 1280 + 48 + 32 + 80,
1122	.vdisplay = 800,
1123	.vsync_start = 800 + 3,
1124	.vsync_end = 800 + 3 + 5,
1125	.vtotal = 800 + 3 + 5 + 24,
1126	},
1127	};
1128
1129	static const struct panel_desc boe_nv101wxmn51 = {
1130	.modes = boe_nv101wxmn51_modes,
1131	.num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
1132	.bpc = 8,
1133	.size = {
1134	.width = 217,
1135	.height = 136,
1136	},
1137	.delay = {
1138	/* TODO: should be hpd-absent and no-hpd should be set? */
1139	.hpd_reliable = 210,
1140	.enable = 50,
1141	.unprepare = 160,
1142	},
1143	};
1144
1145	static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
1146	{
1147	.clock = 207800,
1148	.hdisplay = 2160,
1149	.hsync_start = 2160 + 48,
1150	.hsync_end = 2160 + 48 + 32,
1151	.htotal = 2160 + 48 + 32 + 100,
1152	.vdisplay = 1440,
1153	.vsync_start = 1440 + 3,
1154	.vsync_end = 1440 + 3 + 6,
1155	.vtotal = 1440 + 3 + 6 + 31,
1156	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1157	},
1158	{
1159	.clock = 138500,
1160	.hdisplay = 2160,
1161	.hsync_start = 2160 + 48,
1162	.hsync_end = 2160 + 48 + 32,
1163	.htotal = 2160 + 48 + 32 + 100,
1164	.vdisplay = 1440,
1165	.vsync_start = 1440 + 3,
1166	.vsync_end = 1440 + 3 + 6,
1167	.vtotal = 1440 + 3 + 6 + 31,
1168	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1169	},
1170	};
1171
1172	static const struct panel_desc boe_nv110wtm_n61 = {
1173	.modes = boe_nv110wtm_n61_modes,
1174	.num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
1175	.bpc = 8,
1176	.size = {
1177	.width = 233,
1178	.height = 155,
1179	},
1180	.delay = {
1181	.hpd_absent = 200,
1182	.prepare_to_enable = 80,
1183	.enable = 50,
1184	.unprepare = 500,
1185	},
1186	};
1187
1188	/* Also used for boe_nv133fhm_n62 */
1189	static const struct drm_display_mode boe_nv133fhm_n61_modes = {
1190	.clock = 147840,
1191	.hdisplay = 1920,
1192	.hsync_start = 1920 + 48,
1193	.hsync_end = 1920 + 48 + 32,
1194	.htotal = 1920 + 48 + 32 + 200,
1195	.vdisplay = 1080,
1196	.vsync_start = 1080 + 3,
1197	.vsync_end = 1080 + 3 + 6,
1198	.vtotal = 1080 + 3 + 6 + 31,
1199	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1200	};
1201
1202	/* Also used for boe_nv133fhm_n62 */
1203	static const struct panel_desc boe_nv133fhm_n61 = {
1204	.modes = &boe_nv133fhm_n61_modes,
1205	.num_modes = 1,
1206	.bpc = 6,
1207	.size = {
1208	.width = 294,
1209	.height = 165,
1210	},
1211	.delay = {
1212	/*
1213	* When power is first given to the panel there's a short
1214	* spike on the HPD line. It was explained that this spike
1215	* was until the TCON data download was complete. On
1216	* one system this was measured at 8 ms. We'll put 15 ms
1217	* in the prepare delay just to be safe. That means:
1218	* - If HPD isn't hooked up you still have 200 ms delay.
1219	* - If HPD is hooked up we won't try to look at it for the
1220	* first 15 ms.
1221	*/
1222	.hpd_reliable = 15,
1223	.hpd_absent = 200,
1224
1225	.unprepare = 500,
1226	},
1227	};
1228
1229	static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
1230	{
1231	.clock = 148500,
1232	.hdisplay = 1920,
1233	.hsync_start = 1920 + 48,
1234	.hsync_end = 1920 + 48 + 32,
1235	.htotal = 2200,
1236	.vdisplay = 1080,
1237	.vsync_start = 1080 + 3,
1238	.vsync_end = 1080 + 3 + 5,
1239	.vtotal = 1125,
1240	},
1241	};
1242
1243	static const struct panel_desc boe_nv140fhmn49 = {
1244	.modes = boe_nv140fhmn49_modes,
1245	.num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
1246	.bpc = 6,
1247	.size = {
1248	.width = 309,
1249	.height = 174,
1250	},
1251	.delay = {
1252	/* TODO: should be hpd-absent and no-hpd should be set? */
1253	.hpd_reliable = 210,
1254	.enable = 50,
1255	.unprepare = 160,
1256	},
1257	};
1258
1259	static const struct drm_display_mode innolux_n116bca_ea1_mode = {
1260	.clock = 76420,
1261	.hdisplay = 1366,
1262	.hsync_start = 1366 + 136,
1263	.hsync_end = 1366 + 136 + 30,
1264	.htotal = 1366 + 136 + 30 + 60,
1265	.vdisplay = 768,
1266	.vsync_start = 768 + 8,
1267	.vsync_end = 768 + 8 + 12,
1268	.vtotal = 768 + 8 + 12 + 12,
1269	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1270	};
1271
1272	static const struct panel_desc innolux_n116bca_ea1 = {
1273	.modes = &innolux_n116bca_ea1_mode,
1274	.num_modes = 1,
1275	.bpc = 6,
1276	.size = {
1277	.width = 256,
1278	.height = 144,
1279	},
1280	.delay = {
1281	.hpd_absent = 200,
1282	.enable = 80,
1283	.disable = 50,
1284	.unprepare = 500,
1285	},
1286	};
1287
1288	/*
1289	* Datasheet specifies that at 60 Hz refresh rate:
1290	* - total horizontal time: { 1506, 1592, 1716 }
1291	* - total vertical time: { 788, 800, 868 }
1292	*
1293	* ...but doesn't go into exactly how that should be split into a front
1294	* porch, back porch, or sync length. For now we'll leave a single setting
1295	* here which allows a bit of tweaking of the pixel clock at the expense of
1296	* refresh rate.
1297	*/
1298	static const struct display_timing innolux_n116bge_timing = {
1299	.pixelclock = { 72600000, 76420000, 80240000 },
1300	.hactive = { 1366, 1366, 1366 },
1301	.hfront_porch = { 136, 136, 136 },
1302	.hback_porch = { 60, 60, 60 },
1303	.hsync_len = { 30, 30, 30 },
1304	.vactive = { 768, 768, 768 },
1305	.vfront_porch = { 8, 8, 8 },
1306	.vback_porch = { 12, 12, 12 },
1307	.vsync_len = { 12, 12, 12 },
1308	.flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1309	};
1310
1311	static const struct panel_desc innolux_n116bge = {
1312	.timings = &innolux_n116bge_timing,
1313	.num_timings = 1,
1314	.bpc = 6,
1315	.size = {
1316	.width = 256,
1317	.height = 144,
1318	},
1319	};
1320
1321	static const struct drm_display_mode innolux_n125hce_gn1_mode = {
1322	.clock = 162000,
1323	.hdisplay = 1920,
1324	.hsync_start = 1920 + 40,
1325	.hsync_end = 1920 + 40 + 40,
1326	.htotal = 1920 + 40 + 40 + 80,
1327	.vdisplay = 1080,
1328	.vsync_start = 1080 + 4,
1329	.vsync_end = 1080 + 4 + 4,
1330	.vtotal = 1080 + 4 + 4 + 24,
1331	};
1332
1333	static const struct panel_desc innolux_n125hce_gn1 = {
1334	.modes = &innolux_n125hce_gn1_mode,
1335	.num_modes = 1,
1336	.bpc = 8,
1337	.size = {
1338	.width = 276,
1339	.height = 155,
1340	},
1341	};
1342
1343	static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
1344	.clock = 206016,
1345	.hdisplay = 2160,
1346	.hsync_start = 2160 + 48,
1347	.hsync_end = 2160 + 48 + 32,
1348	.htotal = 2160 + 48 + 32 + 80,
1349	.vdisplay = 1440,
1350	.vsync_start = 1440 + 3,
1351	.vsync_end = 1440 + 3 + 10,
1352	.vtotal = 1440 + 3 + 10 + 27,
1353	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1354	};
1355
1356	static const struct panel_desc innolux_p120zdg_bf1 = {
1357	.modes = &innolux_p120zdg_bf1_mode,
1358	.num_modes = 1,
1359	.bpc = 8,
1360	.size = {
1361	.width = 254,
1362	.height = 169,
1363	},
1364	.delay = {
1365	.hpd_absent = 200,
1366	.unprepare = 500,
1367	},
1368	};
1369
1370	static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
1371	.clock = 81000,
1372	.hdisplay = 1366,
1373	.hsync_start = 1366 + 40,
1374	.hsync_end = 1366 + 40 + 32,
1375	.htotal = 1366 + 40 + 32 + 62,
1376	.vdisplay = 768,
1377	.vsync_start = 768 + 5,
1378	.vsync_end = 768 + 5 + 5,
1379	.vtotal = 768 + 5 + 5 + 122,
1380	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1381	};
1382
1383	static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
1384	.modes = &kingdisplay_kd116n21_30nv_a010_mode,
1385	.num_modes = 1,
1386	.bpc = 6,
1387	.size = {
1388	.width = 256,
1389	.height = 144,
1390	},
1391	.delay = {
1392	.hpd_absent = 200,
1393	},
1394	};
1395
1396	static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
1397	.clock = 200000,
1398	.hdisplay = 1536,
1399	.hsync_start = 1536 + 12,
1400	.hsync_end = 1536 + 12 + 16,
1401	.htotal = 1536 + 12 + 16 + 48,
1402	.vdisplay = 2048,
1403	.vsync_start = 2048 + 8,
1404	.vsync_end = 2048 + 8 + 4,
1405	.vtotal = 2048 + 8 + 4 + 8,
1406	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1407	};
1408
1409	static const struct panel_desc lg_lp079qx1_sp0v = {
1410	.modes = &lg_lp079qx1_sp0v_mode,
1411	.num_modes = 1,
1412	.size = {
1413	.width = 129,
1414	.height = 171,
1415	},
1416	};
1417
1418	static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
1419	.clock = 205210,
1420	.hdisplay = 2048,
1421	.hsync_start = 2048 + 150,
1422	.hsync_end = 2048 + 150 + 5,
1423	.htotal = 2048 + 150 + 5 + 5,
1424	.vdisplay = 1536,
1425	.vsync_start = 1536 + 3,
1426	.vsync_end = 1536 + 3 + 1,
1427	.vtotal = 1536 + 3 + 1 + 9,
1428	};
1429
1430	static const struct panel_desc lg_lp097qx1_spa1 = {
1431	.modes = &lg_lp097qx1_spa1_mode,
1432	.num_modes = 1,
1433	.size = {
1434	.width = 208,
1435	.height = 147,
1436	},
1437	};
1438
1439	static const struct drm_display_mode lg_lp120up1_mode = {
1440	.clock = 162300,
1441	.hdisplay = 1920,
1442	.hsync_start = 1920 + 40,
1443	.hsync_end = 1920 + 40 + 40,
1444	.htotal = 1920 + 40 + 40 + 80,
1445	.vdisplay = 1280,
1446	.vsync_start = 1280 + 4,
1447	.vsync_end = 1280 + 4 + 4,
1448	.vtotal = 1280 + 4 + 4 + 12,
1449	};
1450
1451	static const struct panel_desc lg_lp120up1 = {
1452	.modes = &lg_lp120up1_mode,
1453	.num_modes = 1,
1454	.bpc = 8,
1455	.size = {
1456	.width = 267,
1457	.height = 183,
1458	},
1459	};
1460
1461	static const struct drm_display_mode lg_lp129qe_mode = {
1462	.clock = 285250,
1463	.hdisplay = 2560,
1464	.hsync_start = 2560 + 48,
1465	.hsync_end = 2560 + 48 + 32,
1466	.htotal = 2560 + 48 + 32 + 80,
1467	.vdisplay = 1700,
1468	.vsync_start = 1700 + 3,
1469	.vsync_end = 1700 + 3 + 10,
1470	.vtotal = 1700 + 3 + 10 + 36,
1471	};
1472
1473	static const struct panel_desc lg_lp129qe = {
1474	.modes = &lg_lp129qe_mode,
1475	.num_modes = 1,
1476	.bpc = 8,
1477	.size = {
1478	.width = 272,
1479	.height = 181,
1480	},
1481	};
1482
1483	static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
1484	{
1485	.clock = 138500,
1486	.hdisplay = 1920,
1487	.hsync_start = 1920 + 48,
1488	.hsync_end = 1920 + 48 + 32,
1489	.htotal = 1920 + 48 + 32 + 80,
1490	.vdisplay = 1080,
1491	.vsync_start = 1080 + 3,
1492	.vsync_end = 1080 + 3 + 5,
1493	.vtotal = 1080 + 3 + 5 + 23,
1494	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1495	}, {
1496	.clock = 110920,
1497	.hdisplay = 1920,
1498	.hsync_start = 1920 + 48,
1499	.hsync_end = 1920 + 48 + 32,
1500	.htotal = 1920 + 48 + 32 + 80,
1501	.vdisplay = 1080,
1502	.vsync_start = 1080 + 3,
1503	.vsync_end = 1080 + 3 + 5,
1504	.vtotal = 1080 + 3 + 5 + 23,
1505	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1506	}
1507	};
1508
1509	static const struct panel_desc neweast_wjfh116008a = {
1510	.modes = neweast_wjfh116008a_modes,
1511	.num_modes = 2,
1512	.bpc = 6,
1513	.size = {
1514	.width = 260,
1515	.height = 150,
1516	},
1517	.delay = {
1518	.hpd_reliable = 110,
1519	.enable = 20,
1520	.unprepare = 500,
1521	},
1522	};
1523
1524	static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
1525	.clock = 271560,
1526	.hdisplay = 2560,
1527	.hsync_start = 2560 + 48,
1528	.hsync_end = 2560 + 48 + 32,
1529	.htotal = 2560 + 48 + 32 + 80,
1530	.vdisplay = 1600,
1531	.vsync_start = 1600 + 2,
1532	.vsync_end = 1600 + 2 + 5,
1533	.vtotal = 1600 + 2 + 5 + 57,
1534	};
1535
1536	static const struct panel_desc samsung_lsn122dl01_c01 = {
1537	.modes = &samsung_lsn122dl01_c01_mode,
1538	.num_modes = 1,
1539	.size = {
1540	.width = 263,
1541	.height = 164,
1542	},
1543	};
1544
1545	static const struct drm_display_mode samsung_ltn140at29_301_mode = {
1546	.clock = 76300,
1547	.hdisplay = 1366,
1548	.hsync_start = 1366 + 64,
1549	.hsync_end = 1366 + 64 + 48,
1550	.htotal = 1366 + 64 + 48 + 128,
1551	.vdisplay = 768,
1552	.vsync_start = 768 + 2,
1553	.vsync_end = 768 + 2 + 5,
1554	.vtotal = 768 + 2 + 5 + 17,
1555	};
1556
1557	static const struct panel_desc samsung_ltn140at29_301 = {
1558	.modes = &samsung_ltn140at29_301_mode,
1559	.num_modes = 1,
1560	.bpc = 6,
1561	.size = {
1562	.width = 320,
1563	.height = 187,
1564	},
1565	};
1566
1567	static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
1568	.clock = 168480,
1569	.hdisplay = 1920,
1570	.hsync_start = 1920 + 48,
1571	.hsync_end = 1920 + 48 + 32,
1572	.htotal = 1920 + 48 + 32 + 80,
1573	.vdisplay = 1280,
1574	.vsync_start = 1280 + 3,
1575	.vsync_end = 1280 + 3 + 10,
1576	.vtotal = 1280 + 3 + 10 + 57,
1577	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1578	};
1579
1580	static const struct panel_desc sharp_ld_d5116z01b = {
1581	.modes = &sharp_ld_d5116z01b_mode,
1582	.num_modes = 1,
1583	.bpc = 8,
1584	.size = {
1585	.width = 260,
1586	.height = 120,
1587	},
1588	};
1589
1590	static const struct display_timing sharp_lq123p1jx31_timing = {
1591	.pixelclock = { 252750000, 252750000, 266604720 },
1592	.hactive = { 2400, 2400, 2400 },
1593	.hfront_porch = { 48, 48, 48 },
1594	.hback_porch = { 80, 80, 84 },
1595	.hsync_len = { 32, 32, 32 },
1596	.vactive = { 1600, 1600, 1600 },
1597	.vfront_porch = { 3, 3, 3 },
1598	.vback_porch = { 33, 33, 120 },
1599	.vsync_len = { 10, 10, 10 },
1600	.flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1601	};
1602
1603	static const struct panel_desc sharp_lq123p1jx31 = {
1604	.timings = &sharp_lq123p1jx31_timing,
1605	.num_timings = 1,
1606	.bpc = 8,
1607	.size = {
1608	.width = 259,
1609	.height = 173,
1610	},
1611	.delay = {
1612	.hpd_reliable = 110,
1613	.enable = 50,
1614	.unprepare = 550,
1615	},
1616	};
1617
1618	static const struct of_device_id platform_of_match[] = {
1619	{
1620	/* Must be first */
1621	.compatible = "edp-panel",
1622	},
1623	/*
1624	* Do not add panels to the list below unless they cannot be handled by
1625	* the generic edp-panel compatible.
1626	*
1627	* The only two valid reasons are:
1628	* - Because of the panel issues (e.g. broken EDID or broken
1629	* identification).
1630	* - Because the eDP drivers didn't wire up the AUX bus properly.
1631	* NOTE that, though this is a marginally valid reason,
1632	* some justification needs to be made for why the platform can't
1633	* wire up the AUX bus properly.
1634	*
1635	* In all other cases the platform should use the aux-bus and declare
1636	* the panel using the 'edp-panel' compatible as a device on the AUX
1637	* bus.
1638	*/
1639	{
1640	.compatible = "auo,b101ean01",
1641	.data = &auo_b101ean01,
1642	}, {
1643	.compatible = "auo,b116xa01",
1644	.data = &auo_b116xak01,
1645	}, {
1646	.compatible = "auo,b133htn01",
1647	.data = &auo_b133htn01,
1648	}, {
1649	.compatible = "auo,b133xtn01",
1650	.data = &auo_b133xtn01,
1651	}, {
1652	.compatible = "boe,nv101wxmn51",
1653	.data = &boe_nv101wxmn51,
1654	}, {
1655	.compatible = "boe,nv110wtm-n61",
1656	.data = &boe_nv110wtm_n61,
1657	}, {
1658	.compatible = "boe,nv133fhm-n61",
1659	.data = &boe_nv133fhm_n61,
1660	}, {
1661	.compatible = "boe,nv133fhm-n62",
1662	.data = &boe_nv133fhm_n61,
1663	}, {
1664	.compatible = "boe,nv140fhmn49",
1665	.data = &boe_nv140fhmn49,
1666	}, {
1667	.compatible = "innolux,n116bca-ea1",
1668	.data = &innolux_n116bca_ea1,
1669	}, {
1670	.compatible = "innolux,n116bge",
1671	.data = &innolux_n116bge,
1672	}, {
1673	.compatible = "innolux,n125hce-gn1",
1674	.data = &innolux_n125hce_gn1,
1675	}, {
1676	.compatible = "innolux,p120zdg-bf1",
1677	.data = &innolux_p120zdg_bf1,
1678	}, {
1679	.compatible = "kingdisplay,kd116n21-30nv-a010",
1680	.data = &kingdisplay_kd116n21_30nv_a010,
1681	}, {
1682	.compatible = "lg,lp079qx1-sp0v",
1683	.data = &lg_lp079qx1_sp0v,
1684	}, {
1685	.compatible = "lg,lp097qx1-spa1",
1686	.data = &lg_lp097qx1_spa1,
1687	}, {
1688	.compatible = "lg,lp120up1",
1689	.data = &lg_lp120up1,
1690	}, {
1691	.compatible = "lg,lp129qe",
1692	.data = &lg_lp129qe,
1693	}, {
1694	.compatible = "neweast,wjfh116008a",
1695	.data = &neweast_wjfh116008a,
1696	}, {
1697	.compatible = "samsung,lsn122dl01-c01",
1698	.data = &samsung_lsn122dl01_c01,
1699	}, {
1700	.compatible = "samsung,ltn140at29-301",
1701	.data = &samsung_ltn140at29_301,
1702	}, {
1703	.compatible = "sharp,ld-d5116z01b",
1704	.data = &sharp_ld_d5116z01b,
1705	}, {
1706	.compatible = "sharp,lq123p1jx31",
1707	.data = &sharp_lq123p1jx31,
1708	}, {
1709	/* sentinel */
1710	}
1711	};
1712	MODULE_DEVICE_TABLE(of, platform_of_match);
1713
1714	static const struct panel_delay delay_200_500_p2e80 = {
1715	.hpd_absent = 200,
1716	.unprepare = 500,
1717	.prepare_to_enable = 80,
1718	};
1719
1720	static const struct panel_delay delay_200_500_e50_p2e80 = {
1721	.hpd_absent = 200,
1722	.unprepare = 500,
1723	.enable = 50,
1724	.prepare_to_enable = 80,
1725	};
1726
1727	static const struct panel_delay delay_200_500_p2e100 = {
1728	.hpd_absent = 200,
1729	.unprepare = 500,
1730	.prepare_to_enable = 100,
1731	};
1732
1733	static const struct panel_delay delay_200_500_e50 = {
1734	.hpd_absent = 200,
1735	.unprepare = 500,
1736	.enable = 50,
1737	};
1738
1739	static const struct panel_delay delay_200_500_e50_p2e200 = {
1740	.hpd_absent = 200,
1741	.unprepare = 500,
1742	.enable = 50,
1743	.prepare_to_enable = 200,
1744	};
1745
1746	static const struct panel_delay delay_200_500_e80 = {
1747	.hpd_absent = 200,
1748	.unprepare = 500,
1749	.enable = 80,
1750	};
1751
1752	static const struct panel_delay delay_200_500_e80_d50 = {
1753	.hpd_absent = 200,
1754	.unprepare = 500,
1755	.enable = 80,
1756	.disable = 50,
1757	};
1758
1759	static const struct panel_delay delay_80_500_e50 = {
1760	.hpd_absent = 80,
1761	.unprepare = 500,
1762	.enable = 50,
1763	};
1764
1765	static const struct panel_delay delay_80_500_e80_p2e200 = {
1766	.hpd_absent = 80,
1767	.unprepare = 500,
1768	.enable = 80,
1769	.prepare_to_enable = 200,
1770	};
1771
1772	static const struct panel_delay delay_100_500_e200 = {
1773	.hpd_absent = 100,
1774	.unprepare = 500,
1775	.enable = 200,
1776	};
1777
1778	static const struct panel_delay delay_200_500_e200 = {
1779	.hpd_absent = 200,
1780	.unprepare = 500,
1781	.enable = 200,
1782	};
1783
1784	static const struct panel_delay delay_200_500_e200_d200 = {
1785	.hpd_absent = 200,
1786	.unprepare = 500,
1787	.enable = 200,
1788	.disable = 200,
1789	};
1790
1791	static const struct panel_delay delay_200_500_e200_d10 = {
1792	.hpd_absent = 200,
1793	.unprepare = 500,
1794	.enable = 200,
1795	.disable = 10,
1796	};
1797
1798	static const struct panel_delay delay_200_150_e200 = {
1799	.hpd_absent = 200,
1800	.unprepare = 150,
1801	.enable = 200,
1802	};
1803
1804	static const struct panel_delay delay_200_500_e50_po2e200 = {
1805	.hpd_absent = 200,
1806	.unprepare = 500,
1807	.enable = 50,
1808	.powered_on_to_enable = 200,
1809	};
1810
1811	static const struct panel_delay delay_200_150_e50 = {
1812	.hpd_absent = 200,
1813	.unprepare = 150,
1814	.enable = 50,
1815	};
1816
1817	static const struct panel_delay delay_200_500_e250 = {
1818	.hpd_absent = 200,
1819	.unprepare = 500,
1820	.enable = 250,
1821	};
1822
1823	static const struct panel_delay delay_50_500_e200_d200_po2e335 = {
1824	.hpd_absent = 50,
1825	.unprepare = 500,
1826	.enable = 200,
1827	.disable = 200,
1828	.powered_on_to_enable = 335,
1829	};
1830
1831	#define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
1832	{ \
1833	.ident = { \
1834	.name = _name, \
1835	.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1836	product_id), \
1837	}, \
1838	.delay = _delay \
1839	}
1840
1841	#define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \
1842	{ \
1843	.ident = { \
1844	.name = _name, \
1845	.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1846	product_id), \
1847	}, \
1848	.delay = _delay, \
1849	.override_edid_mode = _mode \
1850	}
1851
1852	/*
1853	* This table is used to figure out power sequencing delays for panels that
1854	* are detected by EDID. Entries here may point to entries in the
1855	* platform_of_match table (if a panel is listed in both places).
1856	*
1857	* Sort first by vendor, then by product ID.
1858	*/
1859	static const struct edp_panel_entry edp_panels[] = {
1860	EDP_PANEL_ENTRY('A', 'U', 'O', 0x105c, &delay_200_500_e50, "B116XTN01.0"),
1861	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
1862	EDP_PANEL_ENTRY('A', 'U', 'O', 0x125c, &delay_200_500_e50, "Unknown"),
1863	EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"),
1864	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1999, &delay_200_500_e50, "Unknown"),
1865	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
1866	EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
1867	EDP_PANEL_ENTRY('A', 'U', 'O', 0x203d, &delay_200_500_e50, "B140HTN02.0"),
1868	EDP_PANEL_ENTRY('A', 'U', 'O', 0x208d, &delay_200_500_e50, "B140HTN02.1"),
1869	EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"),
1870	EDP_PANEL_ENTRY('A', 'U', 'O', 0x239b, &delay_200_500_e50, "B116XAN06.1"),
1871	EDP_PANEL_ENTRY('A', 'U', 'O', 0x255c, &delay_200_500_e50, "B116XTN02.5"),
1872	EDP_PANEL_ENTRY('A', 'U', 'O', 0x403d, &delay_200_500_e50, "B140HAN04.0"),
1873	EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAN04.0"),
1874	EDP_PANEL_ENTRY2('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0",
1875	&auo_b116xa3_mode),
1876	EDP_PANEL_ENTRY('A', 'U', 'O', 0x435c, &delay_200_500_e50, "Unknown"),
1877	EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"),
1878	EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
1879	EDP_PANEL_ENTRY('A', 'U', 'O', 0x635c, &delay_200_500_e50, "B116XAN06.3"),
1880	EDP_PANEL_ENTRY('A', 'U', 'O', 0x639c, &delay_200_500_e50, "B140HAK02.7"),
1881	EDP_PANEL_ENTRY('A', 'U', 'O', 0x723c, &delay_200_500_e50, "B140XTN07.2"),
1882	EDP_PANEL_ENTRY('A', 'U', 'O', 0x73aa, &delay_200_500_e50, "B116XTN02.3"),
1883	EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
1884	EDP_PANEL_ENTRY('A', 'U', 'O', 0xa199, &delay_200_500_e50, "B116XAN06.1"),
1885	EDP_PANEL_ENTRY('A', 'U', 'O', 0xa7b3, &delay_200_500_e50, "B140UAN04.4"),
1886	EDP_PANEL_ENTRY('A', 'U', 'O', 0xc4b4, &delay_200_500_e50, "B116XAT04.1"),
1887	EDP_PANEL_ENTRY('A', 'U', 'O', 0xc9a8, &delay_200_500_e50, "B140QAN08.H"),
1888	EDP_PANEL_ENTRY('A', 'U', 'O', 0xd497, &delay_200_500_e50, "B120XAN01.0"),
1889	EDP_PANEL_ENTRY('A', 'U', 'O', 0xf390, &delay_200_500_e50, "B140XTN07.7"),
1890
1891	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0607, &delay_200_500_e200, "Unknown"),
1892	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0608, &delay_200_500_e50, "NT116WHM-N11"),
1893	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0609, &delay_200_500_e50_po2e200, "NT116WHM-N21 V4.1"),
1894	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0623, &delay_200_500_e200, "NT116WHM-N21 V4.0"),
1895	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0668, &delay_200_500_e200, "Unknown"),
1896	EDP_PANEL_ENTRY('B', 'O', 'E', 0x068f, &delay_200_500_e200, "Unknown"),
1897	EDP_PANEL_ENTRY('B', 'O', 'E', 0x06e5, &delay_200_500_e200, "Unknown"),
1898	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0705, &delay_200_500_e200, "Unknown"),
1899	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0715, &delay_200_150_e200, "NT116WHM-N21"),
1900	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0717, &delay_200_500_e50_po2e200, "NV133FHM-N42"),
1901	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0731, &delay_200_500_e80, "NT116WHM-N42"),
1902	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0741, &delay_200_500_e200, "NT116WHM-N44"),
1903	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0744, &delay_200_500_e200, "Unknown"),
1904	EDP_PANEL_ENTRY('B', 'O', 'E', 0x074c, &delay_200_500_e200, "Unknown"),
1905	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0751, &delay_200_500_e200, "Unknown"),
1906	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0754, &delay_200_500_e50_po2e200, "NV116WHM-N45"),
1907	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0771, &delay_200_500_e200, "Unknown"),
1908	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
1909	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0797, &delay_200_500_e200, "Unknown"),
1910	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07a8, &delay_200_500_e50_po2e200, "NT116WHM-N21"),
1911	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
1912	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d3, &delay_200_500_e200, "Unknown"),
1913	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07f6, &delay_200_500_e200, "NT140FHM-N44"),
1914	EDP_PANEL_ENTRY('B', 'O', 'E', 0x07f8, &delay_200_500_e200, "Unknown"),
1915	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0813, &delay_200_500_e200, "Unknown"),
1916	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0827, &delay_200_500_e50_p2e80, "NT140WHM-N44 V8.0"),
1917	EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
1918	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0843, &delay_200_500_e200, "Unknown"),
1919	EDP_PANEL_ENTRY('B', 'O', 'E', 0x08b2, &delay_200_500_e200, "NT140WHM-N49"),
1920	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0848, &delay_200_500_e200, "Unknown"),
1921	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0849, &delay_200_500_e200, "Unknown"),
1922	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"),
1923	EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"),
1924	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0951, &delay_200_500_e80, "NV116WHM-N47"),
1925	EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"),
1926	EDP_PANEL_ENTRY('B', 'O', 'E', 0x096e, &delay_200_500_e50_po2e200, "NV116WHM-T07 V8.0"),
1927	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"),
1928	EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"),
1929	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0993, &delay_200_500_e80, "NV116WHM-T14 V8.0"),
1930	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09ad, &delay_200_500_e80, "NV116WHM-N47"),
1931	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09ae, &delay_200_500_e200, "NT140FHM-N45"),
1932	EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
1933	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a1b, &delay_200_500_e50, "NV133WUM-N63"),
1934	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a36, &delay_200_500_e200, "Unknown"),
1935	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80, "NV116WHM-N49"),
1936	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
1937	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
1938	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ae8, &delay_200_500_e50_p2e80, "NV140WUM-N41"),
1939	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b09, &delay_200_500_e50_po2e200, "NV140FHM-NZ"),
1940	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80, "NV122WUM-N41"),
1941	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b43, &delay_200_500_e200, "NV140FHM-T09"),
1942	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b56, &delay_200_500_e80, "NT140FHM-N47"),
1943	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b66, &delay_200_500_e80, "NE140WUM-N6G"),
1944	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0c20, &delay_200_500_e80, "NT140FHM-N47"),
1945	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0c93, &delay_200_500_e200, "Unknown"),
1946	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cb6, &delay_200_500_e200, "NT116WHM-N44"),
1947	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cfa, &delay_200_500_e50, "NV116WHM-A4D"),
1948	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0d73, &delay_200_500_e80, "NE140WUM-N6S"),
1949
1950	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1130, &delay_200_500_e50, "N116BGE-EB2"),
1951	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1132, &delay_200_500_e80_d50, "N116BGE-EA2"),
1952	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1138, &innolux_n116bca_ea1.delay, "N116BCA-EA1-RC4"),
1953	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"),
1954	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1141, &delay_200_500_e80_d50, "Unknown"),
1955	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1145, &delay_200_500_e80_d50, "N116BCN-EB1"),
1956	EDP_PANEL_ENTRY('C', 'M', 'N', 0x114a, &delay_200_500_e80_d50, "Unknown"),
1957	EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
1958	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"),
1959	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"),
1960	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"),
1961	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1156, &delay_200_500_e80_d50, "Unknown"),
1962	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1157, &delay_200_500_e80_d50, "N116BGE-EA2"),
1963	EDP_PANEL_ENTRY('C', 'M', 'N', 0x115b, &delay_200_500_e80_d50, "N116BCN-EB1"),
1964	EDP_PANEL_ENTRY('C', 'M', 'N', 0x115d, &delay_200_500_e80_d50, "N116BCA-EA2"),
1965	EDP_PANEL_ENTRY('C', 'M', 'N', 0x115e, &delay_200_500_e80_d50, "N116BCA-EA1"),
1966	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1160, &delay_200_500_e80_d50, "N116BCJ-EAK"),
1967	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1161, &delay_200_500_e80, "N116BCP-EA2"),
1968	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
1969	EDP_PANEL_ENTRY('C', 'M', 'N', 0x142b, &delay_200_500_e80_d50, "N140HCA-EAC"),
1970	EDP_PANEL_ENTRY('C', 'M', 'N', 0x142e, &delay_200_500_e80_d50, "N140BGA-EA4"),
1971	EDP_PANEL_ENTRY('C', 'M', 'N', 0x144f, &delay_200_500_e80_d50, "N140HGA-EA1"),
1972	EDP_PANEL_ENTRY('C', 'M', 'N', 0x1468, &delay_200_500_e80, "N140HGA-EA1"),
1973	EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"),
1974	EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d6, &delay_200_500_e80_d50, "N140BGA-EA4"),
1975	EDP_PANEL_ENTRY('C', 'M', 'N', 0x14e5, &delay_200_500_e80_d50, "N140HGA-EA1"),
1976
1977	EDP_PANEL_ENTRY('C', 'S', 'O', 0x1200, &delay_200_500_e50_p2e200, "MNC207QS1-1"),
1978	EDP_PANEL_ENTRY('C', 'S', 'O', 0x1413, &delay_200_500_e50_p2e200, "MNE007JA1-2"),
1979
1980	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1100, &delay_200_500_e80_d50, "MNB601LS1-1"),
1981	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1103, &delay_200_500_e80_d50, "MNB601LS1-3"),
1982	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1104, &delay_200_500_e50, "MNB601LS1-4"),
1983	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1448, &delay_200_500_e50, "MNE007QS3-7"),
1984	EDP_PANEL_ENTRY('C', 'S', 'W', 0x1457, &delay_80_500_e80_p2e200, "MNE007QS3-8"),
1985
1986	EDP_PANEL_ENTRY('E', 'T', 'C', 0x0000, &delay_50_500_e200_d200_po2e335, "LP079QX1-SP0V"),
1987
1988	EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d51, &delay_200_500_e200, "Unknown"),
1989	EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5b, &delay_200_500_e200, "MB116AN01"),
1990	EDP_PANEL_ENTRY('H', 'K', 'C', 0x2d5c, &delay_200_500_e200, "MB116AN01-2"),
1991
1992	EDP_PANEL_ENTRY('I', 'V', 'O', 0x048e, &delay_200_500_e200_d10, "M116NWR6 R5"),
1993	EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
1994	EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"),
1995	EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"),
1996	EDP_PANEL_ENTRY('I', 'V', 'O', 0x8c4d, &delay_200_150_e200, "R140NWFM R1"),
1997
1998	EDP_PANEL_ENTRY('K', 'D', 'B', 0x044f, &delay_200_500_e80_d50, "Unknown"),
1999	EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
2000	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1118, &delay_200_500_e50, "KD116N29-30NK-A005"),
2001	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
2002	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1212, &delay_200_500_e50, "KD116N0930A16"),
2003	EDP_PANEL_ENTRY('K', 'D', 'B', 0x1707, &delay_200_150_e50, "KD116N2130B12"),
2004
2005	EDP_PANEL_ENTRY('K', 'D', 'C', 0x044f, &delay_200_500_e50, "KD116N9-30NH-F3"),
2006	EDP_PANEL_ENTRY('K', 'D', 'C', 0x05f1, &delay_200_500_e80_d50, "KD116N5-30NV-G7"),
2007	EDP_PANEL_ENTRY('K', 'D', 'C', 0x0809, &delay_200_500_e50, "KD116N2930A15"),
2008
2009	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0000, &delay_200_500_e200_d200, "Unknown"),
2010	EDP_PANEL_ENTRY('L', 'G', 'D', 0x048d, &delay_200_500_e200_d200, "Unknown"),
2011	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0497, &delay_200_500_e200_d200, "LP116WH7-SPB1"),
2012	EDP_PANEL_ENTRY('L', 'G', 'D', 0x052c, &delay_200_500_e200_d200, "LP133WF2-SPL7"),
2013	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0537, &delay_200_500_e200_d200, "Unknown"),
2014	EDP_PANEL_ENTRY('L', 'G', 'D', 0x054a, &delay_200_500_e200_d200, "LP116WH8-SPC1"),
2015	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0567, &delay_200_500_e200_d200, "Unknown"),
2016	EDP_PANEL_ENTRY('L', 'G', 'D', 0x05af, &delay_200_500_e200_d200, "Unknown"),
2017	EDP_PANEL_ENTRY('L', 'G', 'D', 0x05f1, &delay_200_500_e200_d200, "Unknown"),
2018	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0778, &delay_200_500_e200_d200, "134WT1"),
2019
2020	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
2021	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &delay_80_500_e50, "LQ140M1JW46"),
2022	EDP_PANEL_ENTRY('S', 'H', 'P', 0x153a, &delay_200_500_e50, "LQ140T1JH01"),
2023	EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
2024	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1593, &delay_200_500_p2e100, "LQ134N1"),
2025
2026	EDP_PANEL_ENTRY('S', 'T', 'A', 0x0004, &delay_200_500_e200, "116KHD024006"),
2027	EDP_PANEL_ENTRY('S', 'T', 'A', 0x0009, &delay_200_500_e250, "116QHD024002"),
2028	EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
2029
2030	{ /* sentinal */ }
2031	};
2032
2033	static const struct edp_panel_entry *find_edp_panel(u32 panel_id, const struct drm_edid *edid)
2034	{
2035	const struct edp_panel_entry *panel;
2036
2037	if (!panel_id)
2038	return NULL;
2039
2040	/*
2041	* Match with identity first. This allows handling the case where
2042	* vendors incorrectly reused the same panel ID for multiple panels that
2043	* need different settings. If there's no match, try again with panel
2044	* ID, which should be unique.
2045	*/
2046	for (panel = edp_panels; panel->ident.panel_id; panel++)
2047	if (drm_edid_match(drm_edid: edid, ident: &panel->ident))
2048	return panel;
2049
2050	for (panel = edp_panels; panel->ident.panel_id; panel++)
2051	if (panel->ident.panel_id == panel_id)
2052	return panel;
2053
2054	return NULL;
2055	}
2056
2057	static int panel_edp_platform_probe(struct platform_device *pdev)
2058	{
2059	const struct of_device_id *id;
2060
2061	/* Skip one since "edp-panel" is only supported on DP AUX bus */
2062	id = of_match_node(matches: platform_of_match + 1, node: pdev->dev.of_node);
2063	if (!id)
2064	return -ENODEV;
2065
2066	return panel_edp_probe(dev: &pdev->dev, desc: id->data, NULL);
2067	}
2068
2069	static void panel_edp_platform_remove(struct platform_device *pdev)
2070	{
2071	panel_edp_remove(dev: &pdev->dev);
2072	}
2073
2074	static void panel_edp_platform_shutdown(struct platform_device *pdev)
2075	{
2076	panel_edp_shutdown(dev: &pdev->dev);
2077	}
2078
2079	static const struct dev_pm_ops panel_edp_pm_ops = {
2080	SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
2081	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
2082	pm_runtime_force_resume)
2083	};
2084
2085	static struct platform_driver panel_edp_platform_driver = {
2086	.driver = {
2087	.name = "panel-edp",
2088	.of_match_table = platform_of_match,
2089	.pm = &panel_edp_pm_ops,
2090	},
2091	.probe = panel_edp_platform_probe,
2092	.remove = panel_edp_platform_remove,
2093	.shutdown = panel_edp_platform_shutdown,
2094	};
2095
2096	static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
2097	{
2098	const struct of_device_id *id;
2099
2100	id = of_match_node(matches: platform_of_match, node: aux_ep->dev.of_node);
2101	if (!id)
2102	return -ENODEV;
2103
2104	return panel_edp_probe(dev: &aux_ep->dev, desc: id->data, aux: aux_ep->aux);
2105	}
2106
2107	static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
2108	{
2109	panel_edp_remove(dev: &aux_ep->dev);
2110	}
2111
2112	static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
2113	{
2114	panel_edp_shutdown(dev: &aux_ep->dev);
2115	}
2116
2117	static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
2118	.driver = {
2119	.name = "panel-simple-dp-aux",
2120	.of_match_table = platform_of_match, /* Same as platform one! */
2121	.pm = &panel_edp_pm_ops,
2122	},
2123	.probe = panel_edp_dp_aux_ep_probe,
2124	.remove = panel_edp_dp_aux_ep_remove,
2125	.shutdown = panel_edp_dp_aux_ep_shutdown,
2126	};
2127
2128	static int __init panel_edp_init(void)
2129	{
2130	int err;
2131
2132	err = platform_driver_register(&panel_edp_platform_driver);
2133	if (err < 0)
2134	return err;
2135
2136	err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
2137	if (err < 0)
2138	goto err_did_platform_register;
2139
2140	return 0;
2141
2142	err_did_platform_register:
2143	platform_driver_unregister(&panel_edp_platform_driver);
2144
2145	return err;
2146	}
2147	module_init(panel_edp_init);
2148
2149	static void __exit panel_edp_exit(void)
2150	{
2151	dp_aux_dp_driver_unregister(aux_ep_drv: &panel_edp_dp_aux_ep_driver);
2152	platform_driver_unregister(&panel_edp_platform_driver);
2153	}
2154	module_exit(panel_edp_exit);
2155
2156	MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
2157	MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
2158	MODULE_LICENSE("GPL and additional rights");
2159