1 /*
2 * Copyright (C) 2013, NVIDIA Corporation. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sub license,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include <linux/debugfs.h>
25 #include <linux/delay.h>
26 #include <linux/gpio/consumer.h>
27 #include <linux/iopoll.h>
28 #include <linux/module.h>
29 #include <linux/of_platform.h>
30 #include <linux/platform_device.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/regulator/consumer.h>
33
34 #include <video/display_timing.h>
35 #include <video/of_display_timing.h>
36 #include <video/videomode.h>
37
38 #include <drm/display/drm_dp_aux_bus.h>
39 #include <drm/display/drm_dp_helper.h>
40 #include <drm/drm_crtc.h>
41 #include <drm/drm_device.h>
42 #include <drm/drm_edid.h>
43 #include <drm/drm_panel.h>
44
45 /**
46 * struct panel_delay - Describes delays for a simple panel.
47 */
48 struct panel_delay {
49 /**
50 * @hpd_reliable: Time for HPD to be reliable
51 *
52 * The time (in milliseconds) that it takes after powering the panel
53 * before the HPD signal is reliable. Ideally this is 0 but some panels,
54 * board designs, or bad pulldown configs can cause a glitch here.
55 *
56 * NOTE: on some old panel data this number appears to be much too big.
57 * Presumably some old panels simply didn't have HPD hooked up and put
58 * the hpd_absent here because this field predates the
59 * hpd_absent. While that works, it's non-ideal.
60 */
61 unsigned int hpd_reliable;
62
63 /**
64 * @hpd_absent: Time to wait if HPD isn't hooked up.
65 *
66 * Add this to the prepare delay if we know Hot Plug Detect isn't used.
67 *
68 * This is T3-max on eDP timing diagrams or the delay from power on
69 * until HPD is guaranteed to be asserted.
70 */
71 unsigned int hpd_absent;
72
73 /**
74 * @prepare_to_enable: Time between prepare and enable.
75 *
76 * The minimum time, in milliseconds, that needs to have passed
77 * between when prepare finished and enable may begin. If at
78 * enable time less time has passed since prepare finished,
79 * the driver waits for the remaining time.
80 *
81 * If a fixed enable delay is also specified, we'll start
82 * counting before delaying for the fixed delay.
83 *
84 * If a fixed prepare delay is also specified, we won't start
85 * counting until after the fixed delay. We can't overlap this
86 * fixed delay with the min time because the fixed delay
87 * doesn't happen at the end of the function if a HPD GPIO was
88 * specified.
89 *
90 * In other words:
91 * prepare()
92 * ...
93 * // do fixed prepare delay
94 * // wait for HPD GPIO if applicable
95 * // start counting for prepare_to_enable
96 *
97 * enable()
98 * // do fixed enable delay
99 * // enforce prepare_to_enable min time
100 *
101 * This is not specified in a standard way on eDP timing diagrams.
102 * It is effectively the time from HPD going high till you can
103 * turn on the backlight.
104 */
105 unsigned int prepare_to_enable;
106
107 /**
108 * @enable: Time for the panel to display a valid frame.
109 *
110 * The time (in milliseconds) that it takes for the panel to
111 * display the first valid frame after starting to receive
112 * video data.
113 *
114 * This is (T6-min + max(T7-max, T8-min)) on eDP timing diagrams or
115 * the delay after link training finishes until we can turn the
116 * backlight on and see valid data.
117 */
118 unsigned int enable;
119
120 /**
121 * @disable: Time for the panel to turn the display off.
122 *
123 * The time (in milliseconds) that it takes for the panel to
124 * turn the display off (no content is visible).
125 *
126 * This is T9-min (delay from backlight off to end of valid video
127 * data) on eDP timing diagrams. It is not common to set.
128 */
129 unsigned int disable;
130
131 /**
132 * @unprepare: Time to power down completely.
133 *
134 * The time (in milliseconds) that it takes for the panel
135 * to power itself down completely.
136 *
137 * This time is used to prevent a future "prepare" from
138 * starting until at least this many milliseconds has passed.
139 * If at prepare time less time has passed since unprepare
140 * finished, the driver waits for the remaining time.
141 *
142 * This is T12-min on eDP timing diagrams.
143 */
144 unsigned int unprepare;
145 };
146
147 /**
148 * struct panel_desc - Describes a simple panel.
149 */
150 struct panel_desc {
151 /**
152 * @modes: Pointer to array of fixed modes appropriate for this panel.
153 *
154 * If only one mode then this can just be the address of the mode.
155 * NOTE: cannot be used with "timings" and also if this is specified
156 * then you cannot override the mode in the device tree.
157 */
158 const struct drm_display_mode *modes;
159
160 /** @num_modes: Number of elements in modes array. */
161 unsigned int num_modes;
162
163 /**
164 * @timings: Pointer to array of display timings
165 *
166 * NOTE: cannot be used with "modes" and also these will be used to
167 * validate a device tree override if one is present.
168 */
169 const struct display_timing *timings;
170
171 /** @num_timings: Number of elements in timings array. */
172 unsigned int num_timings;
173
174 /** @bpc: Bits per color. */
175 unsigned int bpc;
176
177 /** @size: Structure containing the physical size of this panel. */
178 struct {
179 /**
180 * @size.width: Width (in mm) of the active display area.
181 */
182 unsigned int width;
183
184 /**
185 * @size.height: Height (in mm) of the active display area.
186 */
187 unsigned int height;
188 } size;
189
190 /** @delay: Structure containing various delay values for this panel. */
191 struct panel_delay delay;
192 };
193
194 /**
195 * struct edp_panel_entry - Maps panel ID to delay / panel name.
196 */
197 struct edp_panel_entry {
198 /** @panel_id: 32-bit ID for panel, encoded with drm_edid_encode_panel_id(). */
199 u32 panel_id;
200
201 /** @delay: The power sequencing delays needed for this panel. */
202 const struct panel_delay *delay;
203
204 /** @name: Name of this panel (for printing to logs). */
205 const char *name;
206
207 /** @override_edid_mode: Override the mode obtained by edid. */
208 const struct drm_display_mode *override_edid_mode;
209 };
210
211 struct panel_edp {
212 struct drm_panel base;
213 bool enabled;
214 bool no_hpd;
215
216 bool prepared;
217
218 ktime_t prepared_time;
219 ktime_t unprepared_time;
220
221 const struct panel_desc *desc;
222
223 struct regulator *supply;
224 struct i2c_adapter *ddc;
225 struct drm_dp_aux *aux;
226
227 struct gpio_desc *enable_gpio;
228 struct gpio_desc *hpd_gpio;
229
230 const struct edp_panel_entry *detected_panel;
231
232 struct edid *edid;
233
234 struct drm_display_mode override_mode;
235
236 enum drm_panel_orientation orientation;
237 };
238
to_panel_edp(struct drm_panel *panel)239 static inline struct panel_edp *to_panel_edp(struct drm_panel *panel)
240 {
241 return container_of(panel, struct panel_edp, base);
242 }
243
panel_edp_get_timings_modes(struct panel_edp *panel, struct drm_connector *connector)244 static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel,
245 struct drm_connector *connector)
246 {
247 struct drm_display_mode *mode;
248 unsigned int i, num = 0;
249
250 for (i = 0; i < panel->desc->num_timings; i++) {
251 const struct display_timing *dt = &panel->desc->timings[i];
252 struct videomode vm;
253
254 videomode_from_timing(dt, &vm);
255 mode = drm_mode_create(connector->dev);
256 if (!mode) {
257 dev_err(panel->base.dev, "failed to add mode %ux%u\n",
258 dt->hactive.typ, dt->vactive.typ);
259 continue;
260 }
261
262 drm_display_mode_from_videomode(&vm, mode);
263
264 mode->type |= DRM_MODE_TYPE_DRIVER;
265
266 if (panel->desc->num_timings == 1)
267 mode->type |= DRM_MODE_TYPE_PREFERRED;
268
269 drm_mode_probed_add(connector, mode);
270 num++;
271 }
272
273 return num;
274 }
275
panel_edp_get_display_modes(struct panel_edp *panel, struct drm_connector *connector)276 static unsigned int panel_edp_get_display_modes(struct panel_edp *panel,
277 struct drm_connector *connector)
278 {
279 struct drm_display_mode *mode;
280 unsigned int i, num = 0;
281
282 for (i = 0; i < panel->desc->num_modes; i++) {
283 const struct drm_display_mode *m = &panel->desc->modes[i];
284
285 mode = drm_mode_duplicate(connector->dev, m);
286 if (!mode) {
287 dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n",
288 m->hdisplay, m->vdisplay,
289 drm_mode_vrefresh(m));
290 continue;
291 }
292
293 mode->type |= DRM_MODE_TYPE_DRIVER;
294
295 if (panel->desc->num_modes == 1)
296 mode->type |= DRM_MODE_TYPE_PREFERRED;
297
298 drm_mode_set_name(mode);
299
300 drm_mode_probed_add(connector, mode);
301 num++;
302 }
303
304 return num;
305 }
306
panel_edp_override_edid_mode(struct panel_edp *panel, struct drm_connector *connector, const struct drm_display_mode *override_mode)307 static int panel_edp_override_edid_mode(struct panel_edp *panel,
308 struct drm_connector *connector,
309 const struct drm_display_mode *override_mode)
310 {
311 struct drm_display_mode *mode;
312
313 mode = drm_mode_duplicate(connector->dev, override_mode);
314 if (!mode) {
315 dev_err(panel->base.dev, "failed to add additional mode\n");
316 return 0;
317 }
318
319 mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
320 drm_mode_set_name(mode);
321 drm_mode_probed_add(connector, mode);
322 return 1;
323 }
324
panel_edp_get_non_edid_modes(struct panel_edp *panel, struct drm_connector *connector)325 static int panel_edp_get_non_edid_modes(struct panel_edp *panel,
326 struct drm_connector *connector)
327 {
328 struct drm_display_mode *mode;
329 bool has_override = panel->override_mode.type;
330 unsigned int num = 0;
331
332 if (!panel->desc)
333 return 0;
334
335 if (has_override) {
336 mode = drm_mode_duplicate(connector->dev,
337 &panel->override_mode);
338 if (mode) {
339 drm_mode_probed_add(connector, mode);
340 num = 1;
341 } else {
342 dev_err(panel->base.dev, "failed to add override mode\n");
343 }
344 }
345
346 /* Only add timings if override was not there or failed to validate */
347 if (num == 0 && panel->desc->num_timings)
348 num = panel_edp_get_timings_modes(panel, connector);
349
350 /*
351 * Only add fixed modes if timings/override added no mode.
352 *
353 * We should only ever have either the display timings specified
354 * or a fixed mode. Anything else is rather bogus.
355 */
356 WARN_ON(panel->desc->num_timings && panel->desc->num_modes);
357 if (num == 0)
358 num = panel_edp_get_display_modes(panel, connector);
359
360 connector->display_info.bpc = panel->desc->bpc;
361 connector->display_info.width_mm = panel->desc->size.width;
362 connector->display_info.height_mm = panel->desc->size.height;
363
364 return num;
365 }
366
panel_edp_wait(ktime_t start_ktime, unsigned int min_ms)367 static void panel_edp_wait(ktime_t start_ktime, unsigned int min_ms)
368 {
369 ktime_t now_ktime, min_ktime;
370
371 if (!min_ms)
372 return;
373
374 min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms));
375 now_ktime = ktime_get_boottime();
376
377 if (ktime_before(now_ktime, min_ktime))
378 msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
379 }
380
panel_edp_disable(struct drm_panel *panel)381 static int panel_edp_disable(struct drm_panel *panel)
382 {
383 struct panel_edp *p = to_panel_edp(panel);
384
385 if (!p->enabled)
386 return 0;
387
388 if (p->desc->delay.disable)
389 msleep(p->desc->delay.disable);
390
391 p->enabled = false;
392
393 return 0;
394 }
395
panel_edp_suspend(struct device *dev)396 static int panel_edp_suspend(struct device *dev)
397 {
398 struct panel_edp *p = dev_get_drvdata(dev);
399
400 gpiod_set_value_cansleep(p->enable_gpio, 0);
401 regulator_disable(p->supply);
402 p->unprepared_time = ktime_get_boottime();
403
404 return 0;
405 }
406
panel_edp_unprepare(struct drm_panel *panel)407 static int panel_edp_unprepare(struct drm_panel *panel)
408 {
409 struct panel_edp *p = to_panel_edp(panel);
410 int ret;
411
412 /* Unpreparing when already unprepared is a no-op */
413 if (!p->prepared)
414 return 0;
415
416 ret = pm_runtime_put_sync_suspend(panel->dev);
417 if (ret < 0)
418 return ret;
419 p->prepared = false;
420
421 return 0;
422 }
423
panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p)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, "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
panel_edp_can_read_hpd(struct panel_edp *p)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
panel_edp_prepare_once(struct panel_edp *p)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(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
457 delay = p->desc->delay.hpd_reliable;
458 if (p->no_hpd)
459 delay = max(delay, p->desc->delay.hpd_absent);
460 if (delay)
461 msleep(delay);
462
463 if (panel_edp_can_read_hpd(p)) {
464 if (p->desc->delay.hpd_absent)
465 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL;
466 else
467 hpd_wait_us = 2000000;
468
469 if (p->hpd_gpio) {
470 err = readx_poll_timeout(gpiod_get_value_cansleep,
471 p->hpd_gpio, hpd_asserted,
472 hpd_asserted, 1000, hpd_wait_us);
473 if (hpd_asserted < 0)
474 err = hpd_asserted;
475 } else {
476 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us);
477 }
478
479 if (err) {
480 if (err != -ETIMEDOUT)
481 dev_err(dev,
482 "error waiting for hpd GPIO: %d\n", err);
483 goto error;
484 }
485 }
486
487 p->prepared_time = ktime_get_boottime();
488
489 return 0;
490
491 error:
492 gpiod_set_value_cansleep(p->enable_gpio, 0);
493 regulator_disable(p->supply);
494 p->unprepared_time = ktime_get_boottime();
495
496 return err;
497 }
498
499 /*
500 * Some panels simply don't always come up and need to be power cycled to
501 * work properly. We'll allow for a handful of retries.
502 */
503 #define MAX_PANEL_PREPARE_TRIES 5
504
panel_edp_resume(struct device *dev)505 static int panel_edp_resume(struct device *dev)
506 {
507 struct panel_edp *p = dev_get_drvdata(dev);
508 int ret;
509 int try;
510
511 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) {
512 ret = panel_edp_prepare_once(p);
513 if (ret != -ETIMEDOUT)
514 break;
515 }
516
517 if (ret == -ETIMEDOUT)
518 dev_err(dev, "Prepare timeout after %d tries\n", try);
519 else if (try)
520 dev_warn(dev, "Prepare needed %d retries\n", try);
521
522 return ret;
523 }
524
panel_edp_prepare(struct drm_panel *panel)525 static int panel_edp_prepare(struct drm_panel *panel)
526 {
527 struct panel_edp *p = to_panel_edp(panel);
528 int ret;
529
530 /* Preparing when already prepared is a no-op */
531 if (p->prepared)
532 return 0;
533
534 ret = pm_runtime_get_sync(panel->dev);
535 if (ret < 0) {
536 pm_runtime_put_autosuspend(panel->dev);
537 return ret;
538 }
539
540 p->prepared = true;
541
542 return 0;
543 }
544
panel_edp_enable(struct drm_panel *panel)545 static int panel_edp_enable(struct drm_panel *panel)
546 {
547 struct panel_edp *p = to_panel_edp(panel);
548 unsigned int delay;
549
550 if (p->enabled)
551 return 0;
552
553 delay = p->desc->delay.enable;
554
555 /*
556 * If there is a "prepare_to_enable" delay then that's supposed to be
557 * the delay from HPD going high until we can turn the backlight on.
558 * However, we can only count this if HPD is readable by the panel
559 * driver.
560 *
561 * If we aren't handling the HPD pin ourselves then the best we
562 * can do is assume that HPD went high immediately before we were
563 * called (and link training took zero time). Note that "no-hpd"
564 * actually counts as handling HPD ourselves since we're doing the
565 * worst case delay (in prepare) ourselves.
566 *
567 * NOTE: if we ever end up in this "if" statement then we're
568 * guaranteed that the panel_edp_wait() call below will do no delay.
569 * It already handles that case, though, so we don't need any special
570 * code for it.
571 */
572 if (p->desc->delay.prepare_to_enable &&
573 !panel_edp_can_read_hpd(p) && !p->no_hpd)
574 delay = max(delay, p->desc->delay.prepare_to_enable);
575
576 if (delay)
577 msleep(delay);
578
579 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
580
581 p->enabled = true;
582
583 return 0;
584 }
585
panel_edp_get_modes(struct drm_panel *panel, struct drm_connector *connector)586 static int panel_edp_get_modes(struct drm_panel *panel,
587 struct drm_connector *connector)
588 {
589 struct panel_edp *p = to_panel_edp(panel);
590 int num = 0;
591 bool has_override_edid_mode = p->detected_panel &&
592 p->detected_panel != ERR_PTR(-EINVAL) &&
593 p->detected_panel->override_edid_mode;
594
595 /* probe EDID if a DDC bus is available */
596 if (p->ddc) {
597 pm_runtime_get_sync(panel->dev);
598
599 if (!p->edid)
600 p->edid = drm_get_edid(connector, p->ddc);
601 if (p->edid) {
602 if (has_override_edid_mode) {
603 /*
604 * override_edid_mode is specified. Use
605 * override_edid_mode instead of from edid.
606 */
607 num += panel_edp_override_edid_mode(p, connector,
608 p->detected_panel->override_edid_mode);
609 } else {
610 num += drm_add_edid_modes(connector, p->edid);
611 }
612 }
613
614 pm_runtime_mark_last_busy(panel->dev);
615 pm_runtime_put_autosuspend(panel->dev);
616 }
617
618 /*
619 * Add hard-coded panel modes. Don't call this if there are no timings
620 * and no modes (the generic edp-panel case) because it will clobber
621 * the display_info that was already set by drm_add_edid_modes().
622 */
623 if (p->desc->num_timings || p->desc->num_modes)
624 num += panel_edp_get_non_edid_modes(p, connector);
625 else if (!num)
626 dev_warn(p->base.dev, "No display modes\n");
627
628 /*
629 * TODO: Remove once all drm drivers call
630 * drm_connector_set_orientation_from_panel()
631 */
632 drm_connector_set_panel_orientation(connector, p->orientation);
633
634 return num;
635 }
636
panel_edp_get_timings(struct drm_panel *panel, unsigned int num_timings, struct display_timing *timings)637 static int panel_edp_get_timings(struct drm_panel *panel,
638 unsigned int num_timings,
639 struct display_timing *timings)
640 {
641 struct panel_edp *p = to_panel_edp(panel);
642 unsigned int i;
643
644 if (p->desc->num_timings < num_timings)
645 num_timings = p->desc->num_timings;
646
647 if (timings)
648 for (i = 0; i < num_timings; i++)
649 timings[i] = p->desc->timings[i];
650
651 return p->desc->num_timings;
652 }
653
panel_edp_get_orientation(struct drm_panel *panel)654 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)
655 {
656 struct panel_edp *p = to_panel_edp(panel);
657
658 return p->orientation;
659 }
660
detected_panel_show(struct seq_file *s, void *data)661 static int detected_panel_show(struct seq_file *s, void *data)
662 {
663 struct drm_panel *panel = s->private;
664 struct panel_edp *p = to_panel_edp(panel);
665
666 if (IS_ERR(p->detected_panel))
667 seq_puts(s, "UNKNOWN\n");
668 else if (!p->detected_panel)
669 seq_puts(s, "HARDCODED\n");
670 else
671 seq_printf(s, "%s\n", p->detected_panel->name);
672
673 return 0;
674 }
675
676 DEFINE_SHOW_ATTRIBUTE(detected_panel);
677
panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)678 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
679 {
680 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
681 }
682
683 static const struct drm_panel_funcs panel_edp_funcs = {
684 .disable = panel_edp_disable,
685 .unprepare = panel_edp_unprepare,
686 .prepare = panel_edp_prepare,
687 .enable = panel_edp_enable,
688 .get_modes = panel_edp_get_modes,
689 .get_orientation = panel_edp_get_orientation,
690 .get_timings = panel_edp_get_timings,
691 .debugfs_init = panel_edp_debugfs_init,
692 };
693
694 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
695 (to_check->field.typ >= bounds->field.min && \
696 to_check->field.typ <= bounds->field.max)
panel_edp_parse_panel_timing_node(struct device *dev, struct panel_edp *panel, const struct display_timing *ot)697 static void panel_edp_parse_panel_timing_node(struct device *dev,
698 struct panel_edp *panel,
699 const struct display_timing *ot)
700 {
701 const struct panel_desc *desc = panel->desc;
702 struct videomode vm;
703 unsigned int i;
704
705 if (WARN_ON(desc->num_modes)) {
706 dev_err(dev, "Reject override mode: panel has a fixed mode\n");
707 return;
708 }
709 if (WARN_ON(!desc->num_timings)) {
710 dev_err(dev, "Reject override mode: no timings specified\n");
711 return;
712 }
713
714 for (i = 0; i < panel->desc->num_timings; i++) {
715 const struct display_timing *dt = &panel->desc->timings[i];
716
717 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) ||
718 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) ||
719 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) ||
720 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) ||
721 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) ||
722 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) ||
723 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) ||
724 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len))
725 continue;
726
727 if (ot->flags != dt->flags)
728 continue;
729
730 videomode_from_timing(ot, &vm);
731 drm_display_mode_from_videomode(&vm, &panel->override_mode);
732 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
733 DRM_MODE_TYPE_PREFERRED;
734 break;
735 }
736
737 if (WARN_ON(!panel->override_mode.type))
738 dev_err(dev, "Reject override mode: No display_timing found\n");
739 }
740
741 static const struct edp_panel_entry *find_edp_panel(u32 panel_id);
742
generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)743 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
744 {
745 struct panel_desc *desc;
746 u32 panel_id;
747 char vend[4];
748 u16 product_id;
749 u32 reliable_ms = 0;
750 u32 absent_ms = 0;
751 int ret;
752
753 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
754 if (!desc)
755 return -ENOMEM;
756 panel->desc = desc;
757
758 /*
759 * Read the dts properties for the initial probe. These are used by
760 * the runtime resume code which will get called by the
761 * pm_runtime_get_sync() call below.
762 */
763 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms);
764 desc->delay.hpd_reliable = reliable_ms;
765 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms);
766 desc->delay.hpd_absent = absent_ms;
767
768 /* Power the panel on so we can read the EDID */
769 ret = pm_runtime_get_sync(dev);
770 if (ret < 0) {
771 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret);
772 goto exit;
773 }
774
775 panel_id = drm_edid_get_panel_id(panel->ddc);
776 if (!panel_id) {
777 dev_err(dev, "Couldn't identify panel via EDID\n");
778 ret = -EIO;
779 goto exit;
780 }
781 drm_edid_decode_panel_id(panel_id, vend, &product_id);
782
783 panel->detected_panel = find_edp_panel(panel_id);
784
785 /*
786 * We're using non-optimized timings and want it really obvious that
787 * someone needs to add an entry to the table, so we'll do a WARN_ON
788 * splat.
789 */
790 if (WARN_ON(!panel->detected_panel)) {
791 dev_warn(dev,
792 "Unknown panel %s %#06x, using conservative timings\n",
793 vend, product_id);
794
795 /*
796 * It's highly likely that the panel will work if we use very
797 * conservative timings, so let's do that. We already know that
798 * the HPD-related delays must have worked since we got this
799 * far, so we really just need the "unprepare" / "enable"
800 * delays. We don't need "prepare_to_enable" since that
801 * overlaps the "enable" delay anyway.
802 *
803 * Nearly all panels have a "unprepare" delay of 500 ms though
804 * there are a few with 1000. Let's stick 2000 in just to be
805 * super conservative.
806 *
807 * An "enable" delay of 80 ms seems the most common, but we'll
808 * throw in 200 ms to be safe.
809 */
810 desc->delay.unprepare = 2000;
811 desc->delay.enable = 200;
812
813 panel->detected_panel = ERR_PTR(-EINVAL);
814 } else {
815 dev_info(dev, "Detected %s %s (%#06x)\n",
816 vend, panel->detected_panel->name, product_id);
817
818 /* Update the delay; everything else comes from EDID */
819 desc->delay = *panel->detected_panel->delay;
820 }
821
822 ret = 0;
823 exit:
824 pm_runtime_mark_last_busy(dev);
825 pm_runtime_put_autosuspend(dev);
826
827 return ret;
828 }
829
panel_edp_probe(struct device *dev, const struct panel_desc *desc, struct drm_dp_aux *aux)830 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc,
831 struct drm_dp_aux *aux)
832 {
833 struct panel_edp *panel;
834 struct display_timing dt;
835 struct device_node *ddc;
836 int err;
837
838 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
839 if (!panel)
840 return -ENOMEM;
841
842 panel->enabled = false;
843 panel->prepared_time = 0;
844 panel->desc = desc;
845 panel->aux = aux;
846
847 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");
848 if (!panel->no_hpd) {
849 err = panel_edp_get_hpd_gpio(dev, panel);
850 if (err)
851 return err;
852 }
853
854 panel->supply = devm_regulator_get(dev, "power");
855 if (IS_ERR(panel->supply))
856 return PTR_ERR(panel->supply);
857
858 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
859 GPIOD_OUT_LOW);
860 if (IS_ERR(panel->enable_gpio))
861 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio),
862 "failed to request GPIO\n");
863
864 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
865 if (err) {
866 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
867 return err;
868 }
869
870 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
871 if (ddc) {
872 panel->ddc = of_find_i2c_adapter_by_node(ddc);
873 of_node_put(ddc);
874
875 if (!panel->ddc)
876 return -EPROBE_DEFER;
877 } else if (aux) {
878 panel->ddc = &aux->ddc;
879 }
880
881 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
882 panel_edp_parse_panel_timing_node(dev, panel, &dt);
883
884 dev_set_drvdata(dev, panel);
885
886 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);
887
888 err = drm_panel_of_backlight(&panel->base);
889 if (err)
890 goto err_finished_ddc_init;
891
892 /*
893 * We use runtime PM for prepare / unprepare since those power the panel
894 * on and off and those can be very slow operations. This is important
895 * to optimize powering the panel on briefly to read the EDID before
896 * fully enabling the panel.
897 */
898 pm_runtime_enable(dev);
899 pm_runtime_set_autosuspend_delay(dev, 1000);
900 pm_runtime_use_autosuspend(dev);
901
902 if (of_device_is_compatible(dev->of_node, "edp-panel")) {
903 err = generic_edp_panel_probe(dev, panel);
904 if (err) {
905 dev_err_probe(dev, err,
906 "Couldn't detect panel nor find a fallback\n");
907 goto err_finished_pm_runtime;
908 }
909 /* generic_edp_panel_probe() replaces desc in the panel */
910 desc = panel->desc;
911 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) {
912 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc);
913 }
914
915 if (!panel->base.backlight && panel->aux) {
916 pm_runtime_get_sync(dev);
917 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);
918 pm_runtime_mark_last_busy(dev);
919 pm_runtime_put_autosuspend(dev);
920 if (err)
921 goto err_finished_pm_runtime;
922 }
923
924 drm_panel_add(&panel->base);
925
926 return 0;
927
928 err_finished_pm_runtime:
929 pm_runtime_dont_use_autosuspend(dev);
930 pm_runtime_disable(dev);
931 err_finished_ddc_init:
932 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
933 put_device(&panel->ddc->dev);
934
935 return err;
936 }
937
panel_edp_remove(struct device *dev)938 static void panel_edp_remove(struct device *dev)
939 {
940 struct panel_edp *panel = dev_get_drvdata(dev);
941
942 drm_panel_remove(&panel->base);
943 drm_panel_disable(&panel->base);
944 drm_panel_unprepare(&panel->base);
945
946 pm_runtime_dont_use_autosuspend(dev);
947 pm_runtime_disable(dev);
948 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
949 put_device(&panel->ddc->dev);
950
951 kfree(panel->edid);
952 panel->edid = NULL;
953 }
954
panel_edp_shutdown(struct device *dev)955 static void panel_edp_shutdown(struct device *dev)
956 {
957 struct panel_edp *panel = dev_get_drvdata(dev);
958
959 drm_panel_disable(&panel->base);
960 drm_panel_unprepare(&panel->base);
961 }
962
963 static const struct display_timing auo_b101ean01_timing = {
964 .pixelclock = { 65300000, 72500000, 75000000 },
965 .hactive = { 1280, 1280, 1280 },
966 .hfront_porch = { 18, 119, 119 },
967 .hback_porch = { 21, 21, 21 },
968 .hsync_len = { 32, 32, 32 },
969 .vactive = { 800, 800, 800 },
970 .vfront_porch = { 4, 4, 4 },
971 .vback_porch = { 8, 8, 8 },
972 .vsync_len = { 18, 20, 20 },
973 };
974
975 static const struct panel_desc auo_b101ean01 = {
976 .timings = &auo_b101ean01_timing,
977 .num_timings = 1,
978 .bpc = 6,
979 .size = {
980 .width = 217,
981 .height = 136,
982 },
983 };
984
985 static const struct drm_display_mode auo_b116xak01_mode = {
986 .clock = 69300,
987 .hdisplay = 1366,
988 .hsync_start = 1366 + 48,
989 .hsync_end = 1366 + 48 + 32,
990 .htotal = 1366 + 48 + 32 + 10,
991 .vdisplay = 768,
992 .vsync_start = 768 + 4,
993 .vsync_end = 768 + 4 + 6,
994 .vtotal = 768 + 4 + 6 + 15,
995 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
996 };
997
998 static const struct panel_desc auo_b116xak01 = {
999 .modes = &auo_b116xak01_mode,
1000 .num_modes = 1,
1001 .bpc = 6,
1002 .size = {
1003 .width = 256,
1004 .height = 144,
1005 },
1006 .delay = {
1007 .hpd_absent = 200,
1008 .unprepare = 500,
1009 .enable = 50,
1010 },
1011 };
1012
1013 static const struct drm_display_mode auo_b133han05_mode = {
1014 .clock = 142600,
1015 .hdisplay = 1920,
1016 .hsync_start = 1920 + 58,
1017 .hsync_end = 1920 + 58 + 42,
1018 .htotal = 1920 + 58 + 42 + 60,
1019 .vdisplay = 1080,
1020 .vsync_start = 1080 + 3,
1021 .vsync_end = 1080 + 3 + 5,
1022 .vtotal = 1080 + 3 + 5 + 54,
1023 };
1024
1025 static const struct panel_desc auo_b133han05 = {
1026 .modes = &auo_b133han05_mode,
1027 .num_modes = 1,
1028 .bpc = 8,
1029 .size = {
1030 .width = 293,
1031 .height = 165,
1032 },
1033 .delay = {
1034 .hpd_reliable = 100,
1035 .enable = 20,
1036 .unprepare = 50,
1037 },
1038 };
1039
1040 static const struct drm_display_mode auo_b133htn01_mode = {
1041 .clock = 150660,
1042 .hdisplay = 1920,
1043 .hsync_start = 1920 + 172,
1044 .hsync_end = 1920 + 172 + 80,
1045 .htotal = 1920 + 172 + 80 + 60,
1046 .vdisplay = 1080,
1047 .vsync_start = 1080 + 25,
1048 .vsync_end = 1080 + 25 + 10,
1049 .vtotal = 1080 + 25 + 10 + 10,
1050 };
1051
1052 static const struct panel_desc auo_b133htn01 = {
1053 .modes = &auo_b133htn01_mode,
1054 .num_modes = 1,
1055 .bpc = 6,
1056 .size = {
1057 .width = 293,
1058 .height = 165,
1059 },
1060 .delay = {
1061 .hpd_reliable = 105,
1062 .enable = 20,
1063 .unprepare = 50,
1064 },
1065 };
1066
1067 static const struct drm_display_mode auo_b133xtn01_mode = {
1068 .clock = 69500,
1069 .hdisplay = 1366,
1070 .hsync_start = 1366 + 48,
1071 .hsync_end = 1366 + 48 + 32,
1072 .htotal = 1366 + 48 + 32 + 20,
1073 .vdisplay = 768,
1074 .vsync_start = 768 + 3,
1075 .vsync_end = 768 + 3 + 6,
1076 .vtotal = 768 + 3 + 6 + 13,
1077 };
1078
1079 static const struct panel_desc auo_b133xtn01 = {
1080 .modes = &auo_b133xtn01_mode,
1081 .num_modes = 1,
1082 .bpc = 6,
1083 .size = {
1084 .width = 293,
1085 .height = 165,
1086 },
1087 };
1088
1089 static const struct drm_display_mode auo_b140han06_mode = {
1090 .clock = 141000,
1091 .hdisplay = 1920,
1092 .hsync_start = 1920 + 16,
1093 .hsync_end = 1920 + 16 + 16,
1094 .htotal = 1920 + 16 + 16 + 152,
1095 .vdisplay = 1080,
1096 .vsync_start = 1080 + 3,
1097 .vsync_end = 1080 + 3 + 14,
1098 .vtotal = 1080 + 3 + 14 + 19,
1099 };
1100
1101 static const struct panel_desc auo_b140han06 = {
1102 .modes = &auo_b140han06_mode,
1103 .num_modes = 1,
1104 .bpc = 8,
1105 .size = {
1106 .width = 309,
1107 .height = 174,
1108 },
1109 .delay = {
1110 .hpd_reliable = 100,
1111 .enable = 20,
1112 .unprepare = 50,
1113 },
1114 };
1115
1116 static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
1117 {
1118 .clock = 71900,
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 .clock = 57500,
1130 .hdisplay = 1280,
1131 .hsync_start = 1280 + 48,
1132 .hsync_end = 1280 + 48 + 32,
1133 .htotal = 1280 + 48 + 32 + 80,
1134 .vdisplay = 800,
1135 .vsync_start = 800 + 3,
1136 .vsync_end = 800 + 3 + 5,
1137 .vtotal = 800 + 3 + 5 + 24,
1138 },
1139 };
1140
1141 static const struct panel_desc boe_nv101wxmn51 = {
1142 .modes = boe_nv101wxmn51_modes,
1143 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
1144 .bpc = 8,
1145 .size = {
1146 .width = 217,
1147 .height = 136,
1148 },
1149 .delay = {
1150 /* TODO: should be hpd-absent and no-hpd should be set? */
1151 .hpd_reliable = 210,
1152 .enable = 50,
1153 .unprepare = 160,
1154 },
1155 };
1156
1157 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
1158 {
1159 .clock = 207800,
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 .clock = 138500,
1172 .hdisplay = 2160,
1173 .hsync_start = 2160 + 48,
1174 .hsync_end = 2160 + 48 + 32,
1175 .htotal = 2160 + 48 + 32 + 100,
1176 .vdisplay = 1440,
1177 .vsync_start = 1440 + 3,
1178 .vsync_end = 1440 + 3 + 6,
1179 .vtotal = 1440 + 3 + 6 + 31,
1180 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1181 },
1182 };
1183
1184 static const struct panel_desc boe_nv110wtm_n61 = {
1185 .modes = boe_nv110wtm_n61_modes,
1186 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
1187 .bpc = 8,
1188 .size = {
1189 .width = 233,
1190 .height = 155,
1191 },
1192 .delay = {
1193 .hpd_absent = 200,
1194 .prepare_to_enable = 80,
1195 .enable = 50,
1196 .unprepare = 500,
1197 },
1198 };
1199
1200 /* Also used for boe_nv133fhm_n62 */
1201 static const struct drm_display_mode boe_nv133fhm_n61_modes = {
1202 .clock = 147840,
1203 .hdisplay = 1920,
1204 .hsync_start = 1920 + 48,
1205 .hsync_end = 1920 + 48 + 32,
1206 .htotal = 1920 + 48 + 32 + 200,
1207 .vdisplay = 1080,
1208 .vsync_start = 1080 + 3,
1209 .vsync_end = 1080 + 3 + 6,
1210 .vtotal = 1080 + 3 + 6 + 31,
1211 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1212 };
1213
1214 /* Also used for boe_nv133fhm_n62 */
1215 static const struct panel_desc boe_nv133fhm_n61 = {
1216 .modes = &boe_nv133fhm_n61_modes,
1217 .num_modes = 1,
1218 .bpc = 6,
1219 .size = {
1220 .width = 294,
1221 .height = 165,
1222 },
1223 .delay = {
1224 /*
1225 * When power is first given to the panel there's a short
1226 * spike on the HPD line. It was explained that this spike
1227 * was until the TCON data download was complete. On
1228 * one system this was measured at 8 ms. We'll put 15 ms
1229 * in the prepare delay just to be safe. That means:
1230 * - If HPD isn't hooked up you still have 200 ms delay.
1231 * - If HPD is hooked up we won't try to look at it for the
1232 * first 15 ms.
1233 */
1234 .hpd_reliable = 15,
1235 .hpd_absent = 200,
1236
1237 .unprepare = 500,
1238 },
1239 };
1240
1241 static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
1242 {
1243 .clock = 148500,
1244 .hdisplay = 1920,
1245 .hsync_start = 1920 + 48,
1246 .hsync_end = 1920 + 48 + 32,
1247 .htotal = 2200,
1248 .vdisplay = 1080,
1249 .vsync_start = 1080 + 3,
1250 .vsync_end = 1080 + 3 + 5,
1251 .vtotal = 1125,
1252 },
1253 };
1254
1255 static const struct panel_desc boe_nv140fhmn49 = {
1256 .modes = boe_nv140fhmn49_modes,
1257 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
1258 .bpc = 6,
1259 .size = {
1260 .width = 309,
1261 .height = 174,
1262 },
1263 .delay = {
1264 /* TODO: should be hpd-absent and no-hpd should be set? */
1265 .hpd_reliable = 210,
1266 .enable = 50,
1267 .unprepare = 160,
1268 },
1269 };
1270
1271 static const struct drm_display_mode innolux_n116bca_ea1_mode = {
1272 .clock = 76420,
1273 .hdisplay = 1366,
1274 .hsync_start = 1366 + 136,
1275 .hsync_end = 1366 + 136 + 30,
1276 .htotal = 1366 + 136 + 30 + 60,
1277 .vdisplay = 768,
1278 .vsync_start = 768 + 8,
1279 .vsync_end = 768 + 8 + 12,
1280 .vtotal = 768 + 8 + 12 + 12,
1281 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1282 };
1283
1284 static const struct panel_desc innolux_n116bca_ea1 = {
1285 .modes = &innolux_n116bca_ea1_mode,
1286 .num_modes = 1,
1287 .bpc = 6,
1288 .size = {
1289 .width = 256,
1290 .height = 144,
1291 },
1292 .delay = {
1293 .hpd_absent = 200,
1294 .enable = 80,
1295 .disable = 50,
1296 .unprepare = 500,
1297 },
1298 };
1299
1300 /*
1301 * Datasheet specifies that at 60 Hz refresh rate:
1302 * - total horizontal time: { 1506, 1592, 1716 }
1303 * - total vertical time: { 788, 800, 868 }
1304 *
1305 * ...but doesn't go into exactly how that should be split into a front
1306 * porch, back porch, or sync length. For now we'll leave a single setting
1307 * here which allows a bit of tweaking of the pixel clock at the expense of
1308 * refresh rate.
1309 */
1310 static const struct display_timing innolux_n116bge_timing = {
1311 .pixelclock = { 72600000, 76420000, 80240000 },
1312 .hactive = { 1366, 1366, 1366 },
1313 .hfront_porch = { 136, 136, 136 },
1314 .hback_porch = { 60, 60, 60 },
1315 .hsync_len = { 30, 30, 30 },
1316 .vactive = { 768, 768, 768 },
1317 .vfront_porch = { 8, 8, 8 },
1318 .vback_porch = { 12, 12, 12 },
1319 .vsync_len = { 12, 12, 12 },
1320 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1321 };
1322
1323 static const struct panel_desc innolux_n116bge = {
1324 .timings = &innolux_n116bge_timing,
1325 .num_timings = 1,
1326 .bpc = 6,
1327 .size = {
1328 .width = 256,
1329 .height = 144,
1330 },
1331 };
1332
1333 static const struct drm_display_mode innolux_n125hce_gn1_mode = {
1334 .clock = 162000,
1335 .hdisplay = 1920,
1336 .hsync_start = 1920 + 40,
1337 .hsync_end = 1920 + 40 + 40,
1338 .htotal = 1920 + 40 + 40 + 80,
1339 .vdisplay = 1080,
1340 .vsync_start = 1080 + 4,
1341 .vsync_end = 1080 + 4 + 4,
1342 .vtotal = 1080 + 4 + 4 + 24,
1343 };
1344
1345 static const struct panel_desc innolux_n125hce_gn1 = {
1346 .modes = &innolux_n125hce_gn1_mode,
1347 .num_modes = 1,
1348 .bpc = 8,
1349 .size = {
1350 .width = 276,
1351 .height = 155,
1352 },
1353 };
1354
1355 static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
1356 .clock = 206016,
1357 .hdisplay = 2160,
1358 .hsync_start = 2160 + 48,
1359 .hsync_end = 2160 + 48 + 32,
1360 .htotal = 2160 + 48 + 32 + 80,
1361 .vdisplay = 1440,
1362 .vsync_start = 1440 + 3,
1363 .vsync_end = 1440 + 3 + 10,
1364 .vtotal = 1440 + 3 + 10 + 27,
1365 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1366 };
1367
1368 static const struct panel_desc innolux_p120zdg_bf1 = {
1369 .modes = &innolux_p120zdg_bf1_mode,
1370 .num_modes = 1,
1371 .bpc = 8,
1372 .size = {
1373 .width = 254,
1374 .height = 169,
1375 },
1376 .delay = {
1377 .hpd_absent = 200,
1378 .unprepare = 500,
1379 },
1380 };
1381
1382 static const struct drm_display_mode ivo_m133nwf4_r0_mode = {
1383 .clock = 138778,
1384 .hdisplay = 1920,
1385 .hsync_start = 1920 + 24,
1386 .hsync_end = 1920 + 24 + 48,
1387 .htotal = 1920 + 24 + 48 + 88,
1388 .vdisplay = 1080,
1389 .vsync_start = 1080 + 3,
1390 .vsync_end = 1080 + 3 + 12,
1391 .vtotal = 1080 + 3 + 12 + 17,
1392 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1393 };
1394
1395 static const struct panel_desc ivo_m133nwf4_r0 = {
1396 .modes = &ivo_m133nwf4_r0_mode,
1397 .num_modes = 1,
1398 .bpc = 8,
1399 .size = {
1400 .width = 294,
1401 .height = 165,
1402 },
1403 .delay = {
1404 .hpd_absent = 200,
1405 .unprepare = 500,
1406 },
1407 };
1408
1409 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
1410 .clock = 81000,
1411 .hdisplay = 1366,
1412 .hsync_start = 1366 + 40,
1413 .hsync_end = 1366 + 40 + 32,
1414 .htotal = 1366 + 40 + 32 + 62,
1415 .vdisplay = 768,
1416 .vsync_start = 768 + 5,
1417 .vsync_end = 768 + 5 + 5,
1418 .vtotal = 768 + 5 + 5 + 122,
1419 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1420 };
1421
1422 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
1423 .modes = &kingdisplay_kd116n21_30nv_a010_mode,
1424 .num_modes = 1,
1425 .bpc = 6,
1426 .size = {
1427 .width = 256,
1428 .height = 144,
1429 },
1430 .delay = {
1431 .hpd_absent = 200,
1432 },
1433 };
1434
1435 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
1436 .clock = 200000,
1437 .hdisplay = 1536,
1438 .hsync_start = 1536 + 12,
1439 .hsync_end = 1536 + 12 + 16,
1440 .htotal = 1536 + 12 + 16 + 48,
1441 .vdisplay = 2048,
1442 .vsync_start = 2048 + 8,
1443 .vsync_end = 2048 + 8 + 4,
1444 .vtotal = 2048 + 8 + 4 + 8,
1445 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1446 };
1447
1448 static const struct panel_desc lg_lp079qx1_sp0v = {
1449 .modes = &lg_lp079qx1_sp0v_mode,
1450 .num_modes = 1,
1451 .size = {
1452 .width = 129,
1453 .height = 171,
1454 },
1455 };
1456
1457 static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
1458 .clock = 205210,
1459 .hdisplay = 2048,
1460 .hsync_start = 2048 + 150,
1461 .hsync_end = 2048 + 150 + 5,
1462 .htotal = 2048 + 150 + 5 + 5,
1463 .vdisplay = 1536,
1464 .vsync_start = 1536 + 3,
1465 .vsync_end = 1536 + 3 + 1,
1466 .vtotal = 1536 + 3 + 1 + 9,
1467 };
1468
1469 static const struct panel_desc lg_lp097qx1_spa1 = {
1470 .modes = &lg_lp097qx1_spa1_mode,
1471 .num_modes = 1,
1472 .size = {
1473 .width = 208,
1474 .height = 147,
1475 },
1476 };
1477
1478 static const struct drm_display_mode lg_lp120up1_mode = {
1479 .clock = 162300,
1480 .hdisplay = 1920,
1481 .hsync_start = 1920 + 40,
1482 .hsync_end = 1920 + 40 + 40,
1483 .htotal = 1920 + 40 + 40 + 80,
1484 .vdisplay = 1280,
1485 .vsync_start = 1280 + 4,
1486 .vsync_end = 1280 + 4 + 4,
1487 .vtotal = 1280 + 4 + 4 + 12,
1488 };
1489
1490 static const struct panel_desc lg_lp120up1 = {
1491 .modes = &lg_lp120up1_mode,
1492 .num_modes = 1,
1493 .bpc = 8,
1494 .size = {
1495 .width = 267,
1496 .height = 183,
1497 },
1498 };
1499
1500 static const struct drm_display_mode lg_lp129qe_mode = {
1501 .clock = 285250,
1502 .hdisplay = 2560,
1503 .hsync_start = 2560 + 48,
1504 .hsync_end = 2560 + 48 + 32,
1505 .htotal = 2560 + 48 + 32 + 80,
1506 .vdisplay = 1700,
1507 .vsync_start = 1700 + 3,
1508 .vsync_end = 1700 + 3 + 10,
1509 .vtotal = 1700 + 3 + 10 + 36,
1510 };
1511
1512 static const struct panel_desc lg_lp129qe = {
1513 .modes = &lg_lp129qe_mode,
1514 .num_modes = 1,
1515 .bpc = 8,
1516 .size = {
1517 .width = 272,
1518 .height = 181,
1519 },
1520 };
1521
1522 static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
1523 {
1524 .clock = 138500,
1525 .hdisplay = 1920,
1526 .hsync_start = 1920 + 48,
1527 .hsync_end = 1920 + 48 + 32,
1528 .htotal = 1920 + 48 + 32 + 80,
1529 .vdisplay = 1080,
1530 .vsync_start = 1080 + 3,
1531 .vsync_end = 1080 + 3 + 5,
1532 .vtotal = 1080 + 3 + 5 + 23,
1533 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1534 }, {
1535 .clock = 110920,
1536 .hdisplay = 1920,
1537 .hsync_start = 1920 + 48,
1538 .hsync_end = 1920 + 48 + 32,
1539 .htotal = 1920 + 48 + 32 + 80,
1540 .vdisplay = 1080,
1541 .vsync_start = 1080 + 3,
1542 .vsync_end = 1080 + 3 + 5,
1543 .vtotal = 1080 + 3 + 5 + 23,
1544 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1545 }
1546 };
1547
1548 static const struct panel_desc neweast_wjfh116008a = {
1549 .modes = neweast_wjfh116008a_modes,
1550 .num_modes = 2,
1551 .bpc = 6,
1552 .size = {
1553 .width = 260,
1554 .height = 150,
1555 },
1556 .delay = {
1557 .hpd_reliable = 110,
1558 .enable = 20,
1559 .unprepare = 500,
1560 },
1561 };
1562
1563 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
1564 .clock = 271560,
1565 .hdisplay = 2560,
1566 .hsync_start = 2560 + 48,
1567 .hsync_end = 2560 + 48 + 32,
1568 .htotal = 2560 + 48 + 32 + 80,
1569 .vdisplay = 1600,
1570 .vsync_start = 1600 + 2,
1571 .vsync_end = 1600 + 2 + 5,
1572 .vtotal = 1600 + 2 + 5 + 57,
1573 };
1574
1575 static const struct panel_desc samsung_lsn122dl01_c01 = {
1576 .modes = &samsung_lsn122dl01_c01_mode,
1577 .num_modes = 1,
1578 .size = {
1579 .width = 263,
1580 .height = 164,
1581 },
1582 };
1583
1584 static const struct drm_display_mode samsung_ltn140at29_301_mode = {
1585 .clock = 76300,
1586 .hdisplay = 1366,
1587 .hsync_start = 1366 + 64,
1588 .hsync_end = 1366 + 64 + 48,
1589 .htotal = 1366 + 64 + 48 + 128,
1590 .vdisplay = 768,
1591 .vsync_start = 768 + 2,
1592 .vsync_end = 768 + 2 + 5,
1593 .vtotal = 768 + 2 + 5 + 17,
1594 };
1595
1596 static const struct panel_desc samsung_ltn140at29_301 = {
1597 .modes = &samsung_ltn140at29_301_mode,
1598 .num_modes = 1,
1599 .bpc = 6,
1600 .size = {
1601 .width = 320,
1602 .height = 187,
1603 },
1604 };
1605
1606 static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
1607 .clock = 168480,
1608 .hdisplay = 1920,
1609 .hsync_start = 1920 + 48,
1610 .hsync_end = 1920 + 48 + 32,
1611 .htotal = 1920 + 48 + 32 + 80,
1612 .vdisplay = 1280,
1613 .vsync_start = 1280 + 3,
1614 .vsync_end = 1280 + 3 + 10,
1615 .vtotal = 1280 + 3 + 10 + 57,
1616 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1617 };
1618
1619 static const struct panel_desc sharp_ld_d5116z01b = {
1620 .modes = &sharp_ld_d5116z01b_mode,
1621 .num_modes = 1,
1622 .bpc = 8,
1623 .size = {
1624 .width = 260,
1625 .height = 120,
1626 },
1627 };
1628
1629 static const struct display_timing sharp_lq123p1jx31_timing = {
1630 .pixelclock = { 252750000, 252750000, 266604720 },
1631 .hactive = { 2400, 2400, 2400 },
1632 .hfront_porch = { 48, 48, 48 },
1633 .hback_porch = { 80, 80, 84 },
1634 .hsync_len = { 32, 32, 32 },
1635 .vactive = { 1600, 1600, 1600 },
1636 .vfront_porch = { 3, 3, 3 },
1637 .vback_porch = { 33, 33, 120 },
1638 .vsync_len = { 10, 10, 10 },
1639 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1640 };
1641
1642 static const struct panel_desc sharp_lq123p1jx31 = {
1643 .timings = &sharp_lq123p1jx31_timing,
1644 .num_timings = 1,
1645 .bpc = 8,
1646 .size = {
1647 .width = 259,
1648 .height = 173,
1649 },
1650 .delay = {
1651 .hpd_reliable = 110,
1652 .enable = 50,
1653 .unprepare = 550,
1654 },
1655 };
1656
1657 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = {
1658 {
1659 .clock = 346500,
1660 .hdisplay = 1920,
1661 .hsync_start = 1920 + 48,
1662 .hsync_end = 1920 + 48 + 32,
1663 .htotal = 1920 + 48 + 32 + 80,
1664 .vdisplay = 1080,
1665 .vsync_start = 1080 + 3,
1666 .vsync_end = 1080 + 3 + 5,
1667 .vtotal = 1080 + 3 + 5 + 69,
1668 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1669 }, {
1670 .clock = 144370,
1671 .hdisplay = 1920,
1672 .hsync_start = 1920 + 48,
1673 .hsync_end = 1920 + 48 + 32,
1674 .htotal = 1920 + 48 + 32 + 80,
1675 .vdisplay = 1080,
1676 .vsync_start = 1080 + 3,
1677 .vsync_end = 1080 + 3 + 5,
1678 .vtotal = 1080 + 3 + 5 + 69,
1679 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1680 },
1681 };
1682
1683 static const struct panel_desc sharp_lq140m1jw46 = {
1684 .modes = sharp_lq140m1jw46_mode,
1685 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode),
1686 .bpc = 8,
1687 .size = {
1688 .width = 309,
1689 .height = 174,
1690 },
1691 .delay = {
1692 .hpd_absent = 80,
1693 .enable = 50,
1694 .unprepare = 500,
1695 },
1696 };
1697
1698 static const struct drm_display_mode starry_kr122ea0sra_mode = {
1699 .clock = 147000,
1700 .hdisplay = 1920,
1701 .hsync_start = 1920 + 16,
1702 .hsync_end = 1920 + 16 + 16,
1703 .htotal = 1920 + 16 + 16 + 32,
1704 .vdisplay = 1200,
1705 .vsync_start = 1200 + 15,
1706 .vsync_end = 1200 + 15 + 2,
1707 .vtotal = 1200 + 15 + 2 + 18,
1708 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1709 };
1710
1711 static const struct panel_desc starry_kr122ea0sra = {
1712 .modes = &starry_kr122ea0sra_mode,
1713 .num_modes = 1,
1714 .size = {
1715 .width = 263,
1716 .height = 164,
1717 },
1718 .delay = {
1719 /* TODO: should be hpd-absent and no-hpd should be set? */
1720 .hpd_reliable = 10 + 200,
1721 .enable = 50,
1722 .unprepare = 10 + 500,
1723 },
1724 };
1725
1726 static const struct of_device_id platform_of_match[] = {
1727 {
1728 /* Must be first */
1729 .compatible = "edp-panel",
1730 }, {
1731 .compatible = "auo,b101ean01",
1732 .data = &auo_b101ean01,
1733 }, {
1734 .compatible = "auo,b116xa01",
1735 .data = &auo_b116xak01,
1736 }, {
1737 .compatible = "auo,b133han05",
1738 .data = &auo_b133han05,
1739 }, {
1740 .compatible = "auo,b133htn01",
1741 .data = &auo_b133htn01,
1742 }, {
1743 .compatible = "auo,b133xtn01",
1744 .data = &auo_b133xtn01,
1745 }, {
1746 .compatible = "auo,b140han06",
1747 .data = &auo_b140han06,
1748 }, {
1749 .compatible = "boe,nv101wxmn51",
1750 .data = &boe_nv101wxmn51,
1751 }, {
1752 .compatible = "boe,nv110wtm-n61",
1753 .data = &boe_nv110wtm_n61,
1754 }, {
1755 .compatible = "boe,nv133fhm-n61",
1756 .data = &boe_nv133fhm_n61,
1757 }, {
1758 .compatible = "boe,nv133fhm-n62",
1759 .data = &boe_nv133fhm_n61,
1760 }, {
1761 .compatible = "boe,nv140fhmn49",
1762 .data = &boe_nv140fhmn49,
1763 }, {
1764 .compatible = "innolux,n116bca-ea1",
1765 .data = &innolux_n116bca_ea1,
1766 }, {
1767 .compatible = "innolux,n116bge",
1768 .data = &innolux_n116bge,
1769 }, {
1770 .compatible = "innolux,n125hce-gn1",
1771 .data = &innolux_n125hce_gn1,
1772 }, {
1773 .compatible = "innolux,p120zdg-bf1",
1774 .data = &innolux_p120zdg_bf1,
1775 }, {
1776 .compatible = "ivo,m133nwf4-r0",
1777 .data = &ivo_m133nwf4_r0,
1778 }, {
1779 .compatible = "kingdisplay,kd116n21-30nv-a010",
1780 .data = &kingdisplay_kd116n21_30nv_a010,
1781 }, {
1782 .compatible = "lg,lp079qx1-sp0v",
1783 .data = &lg_lp079qx1_sp0v,
1784 }, {
1785 .compatible = "lg,lp097qx1-spa1",
1786 .data = &lg_lp097qx1_spa1,
1787 }, {
1788 .compatible = "lg,lp120up1",
1789 .data = &lg_lp120up1,
1790 }, {
1791 .compatible = "lg,lp129qe",
1792 .data = &lg_lp129qe,
1793 }, {
1794 .compatible = "neweast,wjfh116008a",
1795 .data = &neweast_wjfh116008a,
1796 }, {
1797 .compatible = "samsung,lsn122dl01-c01",
1798 .data = &samsung_lsn122dl01_c01,
1799 }, {
1800 .compatible = "samsung,ltn140at29-301",
1801 .data = &samsung_ltn140at29_301,
1802 }, {
1803 .compatible = "sharp,ld-d5116z01b",
1804 .data = &sharp_ld_d5116z01b,
1805 }, {
1806 .compatible = "sharp,lq123p1jx31",
1807 .data = &sharp_lq123p1jx31,
1808 }, {
1809 .compatible = "sharp,lq140m1jw46",
1810 .data = &sharp_lq140m1jw46,
1811 }, {
1812 .compatible = "starry,kr122ea0sra",
1813 .data = &starry_kr122ea0sra,
1814 }, {
1815 /* sentinel */
1816 }
1817 };
1818 MODULE_DEVICE_TABLE(of, platform_of_match);
1819
1820 static const struct panel_delay delay_200_500_p2e80 = {
1821 .hpd_absent = 200,
1822 .unprepare = 500,
1823 .prepare_to_enable = 80,
1824 };
1825
1826 static const struct panel_delay delay_200_500_p2e100 = {
1827 .hpd_absent = 200,
1828 .unprepare = 500,
1829 .prepare_to_enable = 100,
1830 };
1831
1832 static const struct panel_delay delay_200_500_e50 = {
1833 .hpd_absent = 200,
1834 .unprepare = 500,
1835 .enable = 50,
1836 };
1837
1838 static const struct panel_delay delay_200_500_e80_d50 = {
1839 .hpd_absent = 200,
1840 .unprepare = 500,
1841 .enable = 80,
1842 .disable = 50,
1843 };
1844
1845 static const struct panel_delay delay_100_500_e200 = {
1846 .hpd_absent = 100,
1847 .unprepare = 500,
1848 .enable = 200,
1849 };
1850
1851 static const struct panel_delay delay_200_500_e200 = {
1852 .hpd_absent = 200,
1853 .unprepare = 500,
1854 .enable = 200,
1855 };
1856
1857 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
1858 { \
1859 .name = _name, \
1860 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1861 product_id), \
1862 .delay = _delay \
1863 }
1864
1865 #define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \
1866 { \
1867 .name = _name, \
1868 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1869 product_id), \
1870 .delay = _delay, \
1871 .override_edid_mode = _mode \
1872 }
1873
1874 /*
1875 * This table is used to figure out power sequencing delays for panels that
1876 * are detected by EDID. Entries here may point to entries in the
1877 * platform_of_match table (if a panel is listed in both places).
1878 *
1879 * Sort first by vendor, then by product ID.
1880 */
1881 static const struct edp_panel_entry edp_panels[] = {
1882 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
1883 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"),
1884 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
1885 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
1886 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"),
1887 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0"),
1888 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"),
1889 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
1890 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
1891
1892 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
1893 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
1894 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
1895 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"),
1896 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"),
1897 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"),
1898 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"),
1899 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"),
1900 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
1901 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
1902 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
1903
1904 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"),
1905 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
1906 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"),
1907 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"),
1908 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"),
1909 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
1910 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"),
1911
1912 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
1913 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"),
1914 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"),
1915
1916 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
1917 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
1918
1919 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
1920 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"),
1921 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
1922
1923 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
1924
1925 { /* sentinal */ }
1926 };
1927
find_edp_panel(u32 panel_id)1928 static const struct edp_panel_entry *find_edp_panel(u32 panel_id)
1929 {
1930 const struct edp_panel_entry *panel;
1931
1932 if (!panel_id)
1933 return NULL;
1934
1935 for (panel = edp_panels; panel->panel_id; panel++)
1936 if (panel->panel_id == panel_id)
1937 return panel;
1938
1939 return NULL;
1940 }
1941
panel_edp_platform_probe(struct platform_device *pdev)1942 static int panel_edp_platform_probe(struct platform_device *pdev)
1943 {
1944 const struct of_device_id *id;
1945
1946 /* Skip one since "edp-panel" is only supported on DP AUX bus */
1947 id = of_match_node(platform_of_match + 1, pdev->dev.of_node);
1948 if (!id)
1949 return -ENODEV;
1950
1951 return panel_edp_probe(&pdev->dev, id->data, NULL);
1952 }
1953
panel_edp_platform_remove(struct platform_device *pdev)1954 static void panel_edp_platform_remove(struct platform_device *pdev)
1955 {
1956 panel_edp_remove(&pdev->dev);
1957 }
1958
panel_edp_platform_shutdown(struct platform_device *pdev)1959 static void panel_edp_platform_shutdown(struct platform_device *pdev)
1960 {
1961 panel_edp_shutdown(&pdev->dev);
1962 }
1963
1964 static const struct dev_pm_ops panel_edp_pm_ops = {
1965 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
1966 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1967 pm_runtime_force_resume)
1968 };
1969
1970 static struct platform_driver panel_edp_platform_driver = {
1971 .driver = {
1972 .name = "panel-edp",
1973 .of_match_table = platform_of_match,
1974 .pm = &panel_edp_pm_ops,
1975 },
1976 .probe = panel_edp_platform_probe,
1977 .remove_new = panel_edp_platform_remove,
1978 .shutdown = panel_edp_platform_shutdown,
1979 };
1980
panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)1981 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
1982 {
1983 const struct of_device_id *id;
1984
1985 id = of_match_node(platform_of_match, aux_ep->dev.of_node);
1986 if (!id)
1987 return -ENODEV;
1988
1989 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux);
1990 }
1991
panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)1992 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
1993 {
1994 panel_edp_remove(&aux_ep->dev);
1995 }
1996
panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)1997 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
1998 {
1999 panel_edp_shutdown(&aux_ep->dev);
2000 }
2001
2002 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
2003 .driver = {
2004 .name = "panel-simple-dp-aux",
2005 .of_match_table = platform_of_match, /* Same as platform one! */
2006 .pm = &panel_edp_pm_ops,
2007 },
2008 .probe = panel_edp_dp_aux_ep_probe,
2009 .remove = panel_edp_dp_aux_ep_remove,
2010 .shutdown = panel_edp_dp_aux_ep_shutdown,
2011 };
2012
panel_edp_init(void)2013 static int __init panel_edp_init(void)
2014 {
2015 int err;
2016
2017 err = platform_driver_register(&panel_edp_platform_driver);
2018 if (err < 0)
2019 return err;
2020
2021 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
2022 if (err < 0)
2023 goto err_did_platform_register;
2024
2025 return 0;
2026
2027 err_did_platform_register:
2028 platform_driver_unregister(&panel_edp_platform_driver);
2029
2030 return err;
2031 }
2032 module_init(panel_edp_init);
2033
panel_edp_exit(void)2034 static void __exit panel_edp_exit(void)
2035 {
2036 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver);
2037 platform_driver_unregister(&panel_edp_platform_driver);
2038 }
2039 module_exit(panel_edp_exit);
2040
2041 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
2042 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
2043 MODULE_LICENSE("GPL and additional rights");
2044