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 pm_runtime_mark_last_busy(panel->dev);
417 ret = pm_runtime_put_autosuspend(panel->dev);
418 if (ret < 0)
419 return ret;
420 p->prepared = false;
421
422 return 0;
423 }
424
panel_edp_get_hpd_gpio(struct device * dev,struct panel_edp * p)425 static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p)
426 {
427 p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
428 if (IS_ERR(p->hpd_gpio))
429 return dev_err_probe(dev, PTR_ERR(p->hpd_gpio),
430 "failed to get 'hpd' GPIO\n");
431
432 return 0;
433 }
434
panel_edp_can_read_hpd(struct panel_edp * p)435 static bool panel_edp_can_read_hpd(struct panel_edp *p)
436 {
437 return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted));
438 }
439
panel_edp_prepare_once(struct panel_edp * p)440 static int panel_edp_prepare_once(struct panel_edp *p)
441 {
442 struct device *dev = p->base.dev;
443 unsigned int delay;
444 int err;
445 int hpd_asserted;
446 unsigned long hpd_wait_us;
447
448 panel_edp_wait(p->unprepared_time, p->desc->delay.unprepare);
449
450 err = regulator_enable(p->supply);
451 if (err < 0) {
452 dev_err(dev, "failed to enable supply: %d\n", err);
453 return err;
454 }
455
456 gpiod_set_value_cansleep(p->enable_gpio, 1);
457
458 delay = p->desc->delay.hpd_reliable;
459 if (p->no_hpd)
460 delay = max(delay, p->desc->delay.hpd_absent);
461 if (delay)
462 msleep(delay);
463
464 if (panel_edp_can_read_hpd(p)) {
465 if (p->desc->delay.hpd_absent)
466 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL;
467 else
468 hpd_wait_us = 2000000;
469
470 if (p->hpd_gpio) {
471 err = readx_poll_timeout(gpiod_get_value_cansleep,
472 p->hpd_gpio, hpd_asserted,
473 hpd_asserted, 1000, hpd_wait_us);
474 if (hpd_asserted < 0)
475 err = hpd_asserted;
476 } else {
477 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us);
478 }
479
480 if (err) {
481 if (err != -ETIMEDOUT)
482 dev_err(dev,
483 "error waiting for hpd GPIO: %d\n", err);
484 goto error;
485 }
486 }
487
488 p->prepared_time = ktime_get_boottime();
489
490 return 0;
491
492 error:
493 gpiod_set_value_cansleep(p->enable_gpio, 0);
494 regulator_disable(p->supply);
495 p->unprepared_time = ktime_get_boottime();
496
497 return err;
498 }
499
500 /*
501 * Some panels simply don't always come up and need to be power cycled to
502 * work properly. We'll allow for a handful of retries.
503 */
504 #define MAX_PANEL_PREPARE_TRIES 5
505
panel_edp_resume(struct device * dev)506 static int panel_edp_resume(struct device *dev)
507 {
508 struct panel_edp *p = dev_get_drvdata(dev);
509 int ret;
510 int try;
511
512 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) {
513 ret = panel_edp_prepare_once(p);
514 if (ret != -ETIMEDOUT)
515 break;
516 }
517
518 if (ret == -ETIMEDOUT)
519 dev_err(dev, "Prepare timeout after %d tries\n", try);
520 else if (try)
521 dev_warn(dev, "Prepare needed %d retries\n", try);
522
523 return ret;
524 }
525
panel_edp_prepare(struct drm_panel * panel)526 static int panel_edp_prepare(struct drm_panel *panel)
527 {
528 struct panel_edp *p = to_panel_edp(panel);
529 int ret;
530
531 /* Preparing when already prepared is a no-op */
532 if (p->prepared)
533 return 0;
534
535 ret = pm_runtime_get_sync(panel->dev);
536 if (ret < 0) {
537 pm_runtime_put_autosuspend(panel->dev);
538 return ret;
539 }
540
541 p->prepared = true;
542
543 return 0;
544 }
545
panel_edp_enable(struct drm_panel * panel)546 static int panel_edp_enable(struct drm_panel *panel)
547 {
548 struct panel_edp *p = to_panel_edp(panel);
549 unsigned int delay;
550
551 if (p->enabled)
552 return 0;
553
554 delay = p->desc->delay.enable;
555
556 /*
557 * If there is a "prepare_to_enable" delay then that's supposed to be
558 * the delay from HPD going high until we can turn the backlight on.
559 * However, we can only count this if HPD is readable by the panel
560 * driver.
561 *
562 * If we aren't handling the HPD pin ourselves then the best we
563 * can do is assume that HPD went high immediately before we were
564 * called (and link training took zero time). Note that "no-hpd"
565 * actually counts as handling HPD ourselves since we're doing the
566 * worst case delay (in prepare) ourselves.
567 *
568 * NOTE: if we ever end up in this "if" statement then we're
569 * guaranteed that the panel_edp_wait() call below will do no delay.
570 * It already handles that case, though, so we don't need any special
571 * code for it.
572 */
573 if (p->desc->delay.prepare_to_enable &&
574 !panel_edp_can_read_hpd(p) && !p->no_hpd)
575 delay = max(delay, p->desc->delay.prepare_to_enable);
576
577 if (delay)
578 msleep(delay);
579
580 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
581
582 p->enabled = true;
583
584 return 0;
585 }
586
panel_edp_get_modes(struct drm_panel * panel,struct drm_connector * connector)587 static int panel_edp_get_modes(struct drm_panel *panel,
588 struct drm_connector *connector)
589 {
590 struct panel_edp *p = to_panel_edp(panel);
591 int num = 0;
592 bool has_override_edid_mode = p->detected_panel &&
593 p->detected_panel != ERR_PTR(-EINVAL) &&
594 p->detected_panel->override_edid_mode;
595
596 /* probe EDID if a DDC bus is available */
597 if (p->ddc) {
598 pm_runtime_get_sync(panel->dev);
599
600 if (!p->edid)
601 p->edid = drm_get_edid(connector, p->ddc);
602 if (p->edid) {
603 if (has_override_edid_mode) {
604 /*
605 * override_edid_mode is specified. Use
606 * override_edid_mode instead of from edid.
607 */
608 num += panel_edp_override_edid_mode(p, connector,
609 p->detected_panel->override_edid_mode);
610 } else {
611 num += drm_add_edid_modes(connector, p->edid);
612 }
613 }
614
615 pm_runtime_mark_last_busy(panel->dev);
616 pm_runtime_put_autosuspend(panel->dev);
617 }
618
619 /*
620 * Add hard-coded panel modes. Don't call this if there are no timings
621 * and no modes (the generic edp-panel case) because it will clobber
622 * the display_info that was already set by drm_add_edid_modes().
623 */
624 if (p->desc->num_timings || p->desc->num_modes)
625 num += panel_edp_get_non_edid_modes(p, connector);
626 else if (!num)
627 dev_warn(p->base.dev, "No display modes\n");
628
629 /*
630 * TODO: Remove once all drm drivers call
631 * drm_connector_set_orientation_from_panel()
632 */
633 drm_connector_set_panel_orientation(connector, p->orientation);
634
635 return num;
636 }
637
panel_edp_get_timings(struct drm_panel * panel,unsigned int num_timings,struct display_timing * timings)638 static int panel_edp_get_timings(struct drm_panel *panel,
639 unsigned int num_timings,
640 struct display_timing *timings)
641 {
642 struct panel_edp *p = to_panel_edp(panel);
643 unsigned int i;
644
645 if (p->desc->num_timings < num_timings)
646 num_timings = p->desc->num_timings;
647
648 if (timings)
649 for (i = 0; i < num_timings; i++)
650 timings[i] = p->desc->timings[i];
651
652 return p->desc->num_timings;
653 }
654
panel_edp_get_orientation(struct drm_panel * panel)655 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)
656 {
657 struct panel_edp *p = to_panel_edp(panel);
658
659 return p->orientation;
660 }
661
detected_panel_show(struct seq_file * s,void * data)662 static int detected_panel_show(struct seq_file *s, void *data)
663 {
664 struct drm_panel *panel = s->private;
665 struct panel_edp *p = to_panel_edp(panel);
666
667 if (IS_ERR(p->detected_panel))
668 seq_puts(s, "UNKNOWN\n");
669 else if (!p->detected_panel)
670 seq_puts(s, "HARDCODED\n");
671 else
672 seq_printf(s, "%s\n", p->detected_panel->name);
673
674 return 0;
675 }
676
677 DEFINE_SHOW_ATTRIBUTE(detected_panel);
678
panel_edp_debugfs_init(struct drm_panel * panel,struct dentry * root)679 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
680 {
681 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
682 }
683
684 static const struct drm_panel_funcs panel_edp_funcs = {
685 .disable = panel_edp_disable,
686 .unprepare = panel_edp_unprepare,
687 .prepare = panel_edp_prepare,
688 .enable = panel_edp_enable,
689 .get_modes = panel_edp_get_modes,
690 .get_orientation = panel_edp_get_orientation,
691 .get_timings = panel_edp_get_timings,
692 .debugfs_init = panel_edp_debugfs_init,
693 };
694
695 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
696 (to_check->field.typ >= bounds->field.min && \
697 to_check->field.typ <= bounds->field.max)
panel_edp_parse_panel_timing_node(struct device * dev,struct panel_edp * panel,const struct display_timing * ot)698 static void panel_edp_parse_panel_timing_node(struct device *dev,
699 struct panel_edp *panel,
700 const struct display_timing *ot)
701 {
702 const struct panel_desc *desc = panel->desc;
703 struct videomode vm;
704 unsigned int i;
705
706 if (WARN_ON(desc->num_modes)) {
707 dev_err(dev, "Reject override mode: panel has a fixed mode\n");
708 return;
709 }
710 if (WARN_ON(!desc->num_timings)) {
711 dev_err(dev, "Reject override mode: no timings specified\n");
712 return;
713 }
714
715 for (i = 0; i < panel->desc->num_timings; i++) {
716 const struct display_timing *dt = &panel->desc->timings[i];
717
718 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) ||
719 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) ||
720 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) ||
721 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) ||
722 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) ||
723 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) ||
724 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) ||
725 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len))
726 continue;
727
728 if (ot->flags != dt->flags)
729 continue;
730
731 videomode_from_timing(ot, &vm);
732 drm_display_mode_from_videomode(&vm, &panel->override_mode);
733 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
734 DRM_MODE_TYPE_PREFERRED;
735 break;
736 }
737
738 if (WARN_ON(!panel->override_mode.type))
739 dev_err(dev, "Reject override mode: No display_timing found\n");
740 }
741
742 static const struct edp_panel_entry *find_edp_panel(u32 panel_id);
743
generic_edp_panel_probe(struct device * dev,struct panel_edp * panel)744 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
745 {
746 struct panel_desc *desc;
747 u32 panel_id;
748 char vend[4];
749 u16 product_id;
750 u32 reliable_ms = 0;
751 u32 absent_ms = 0;
752 int ret;
753
754 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
755 if (!desc)
756 return -ENOMEM;
757 panel->desc = desc;
758
759 /*
760 * Read the dts properties for the initial probe. These are used by
761 * the runtime resume code which will get called by the
762 * pm_runtime_get_sync() call below.
763 */
764 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms);
765 desc->delay.hpd_reliable = reliable_ms;
766 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms);
767 desc->delay.hpd_absent = absent_ms;
768
769 /* Power the panel on so we can read the EDID */
770 ret = pm_runtime_get_sync(dev);
771 if (ret < 0) {
772 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret);
773 goto exit;
774 }
775
776 panel_id = drm_edid_get_panel_id(panel->ddc);
777 if (!panel_id) {
778 dev_err(dev, "Couldn't identify panel via EDID\n");
779 ret = -EIO;
780 goto exit;
781 }
782 drm_edid_decode_panel_id(panel_id, vend, &product_id);
783
784 panel->detected_panel = find_edp_panel(panel_id);
785
786 /*
787 * We're using non-optimized timings and want it really obvious that
788 * someone needs to add an entry to the table, so we'll do a WARN_ON
789 * splat.
790 */
791 if (WARN_ON(!panel->detected_panel)) {
792 dev_warn(dev,
793 "Unknown panel %s %#06x, using conservative timings\n",
794 vend, product_id);
795
796 /*
797 * It's highly likely that the panel will work if we use very
798 * conservative timings, so let's do that. We already know that
799 * the HPD-related delays must have worked since we got this
800 * far, so we really just need the "unprepare" / "enable"
801 * delays. We don't need "prepare_to_enable" since that
802 * overlaps the "enable" delay anyway.
803 *
804 * Nearly all panels have a "unprepare" delay of 500 ms though
805 * there are a few with 1000. Let's stick 2000 in just to be
806 * super conservative.
807 *
808 * An "enable" delay of 80 ms seems the most common, but we'll
809 * throw in 200 ms to be safe.
810 */
811 desc->delay.unprepare = 2000;
812 desc->delay.enable = 200;
813
814 panel->detected_panel = ERR_PTR(-EINVAL);
815 } else {
816 dev_info(dev, "Detected %s %s (%#06x)\n",
817 vend, panel->detected_panel->name, product_id);
818
819 /* Update the delay; everything else comes from EDID */
820 desc->delay = *panel->detected_panel->delay;
821 }
822
823 ret = 0;
824 exit:
825 pm_runtime_mark_last_busy(dev);
826 pm_runtime_put_autosuspend(dev);
827
828 return ret;
829 }
830
panel_edp_probe(struct device * dev,const struct panel_desc * desc,struct drm_dp_aux * aux)831 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc,
832 struct drm_dp_aux *aux)
833 {
834 struct panel_edp *panel;
835 struct display_timing dt;
836 struct device_node *ddc;
837 int err;
838
839 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
840 if (!panel)
841 return -ENOMEM;
842
843 panel->enabled = false;
844 panel->prepared_time = 0;
845 panel->desc = desc;
846 panel->aux = aux;
847
848 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");
849 if (!panel->no_hpd) {
850 err = panel_edp_get_hpd_gpio(dev, panel);
851 if (err)
852 return err;
853 }
854
855 panel->supply = devm_regulator_get(dev, "power");
856 if (IS_ERR(panel->supply))
857 return PTR_ERR(panel->supply);
858
859 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
860 GPIOD_OUT_LOW);
861 if (IS_ERR(panel->enable_gpio))
862 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio),
863 "failed to request GPIO\n");
864
865 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
866 if (err) {
867 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
868 return err;
869 }
870
871 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
872 if (ddc) {
873 panel->ddc = of_find_i2c_adapter_by_node(ddc);
874 of_node_put(ddc);
875
876 if (!panel->ddc)
877 return -EPROBE_DEFER;
878 } else if (aux) {
879 panel->ddc = &aux->ddc;
880 }
881
882 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
883 panel_edp_parse_panel_timing_node(dev, panel, &dt);
884
885 dev_set_drvdata(dev, panel);
886
887 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);
888
889 err = drm_panel_of_backlight(&panel->base);
890 if (err)
891 goto err_finished_ddc_init;
892
893 /*
894 * We use runtime PM for prepare / unprepare since those power the panel
895 * on and off and those can be very slow operations. This is important
896 * to optimize powering the panel on briefly to read the EDID before
897 * fully enabling the panel.
898 */
899 pm_runtime_enable(dev);
900 pm_runtime_set_autosuspend_delay(dev, 1000);
901 pm_runtime_use_autosuspend(dev);
902
903 if (of_device_is_compatible(dev->of_node, "edp-panel")) {
904 err = generic_edp_panel_probe(dev, panel);
905 if (err) {
906 dev_err_probe(dev, err,
907 "Couldn't detect panel nor find a fallback\n");
908 goto err_finished_pm_runtime;
909 }
910 /* generic_edp_panel_probe() replaces desc in the panel */
911 desc = panel->desc;
912 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) {
913 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc);
914 }
915
916 if (!panel->base.backlight && panel->aux) {
917 pm_runtime_get_sync(dev);
918 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);
919 pm_runtime_mark_last_busy(dev);
920 pm_runtime_put_autosuspend(dev);
921 if (err)
922 goto err_finished_pm_runtime;
923 }
924
925 drm_panel_add(&panel->base);
926
927 return 0;
928
929 err_finished_pm_runtime:
930 pm_runtime_dont_use_autosuspend(dev);
931 pm_runtime_disable(dev);
932 err_finished_ddc_init:
933 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
934 put_device(&panel->ddc->dev);
935
936 return err;
937 }
938
panel_edp_remove(struct device * dev)939 static void panel_edp_remove(struct device *dev)
940 {
941 struct panel_edp *panel = dev_get_drvdata(dev);
942
943 drm_panel_remove(&panel->base);
944 drm_panel_disable(&panel->base);
945 drm_panel_unprepare(&panel->base);
946
947 pm_runtime_dont_use_autosuspend(dev);
948 pm_runtime_disable(dev);
949 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
950 put_device(&panel->ddc->dev);
951
952 kfree(panel->edid);
953 panel->edid = NULL;
954 }
955
panel_edp_shutdown(struct device * dev)956 static void panel_edp_shutdown(struct device *dev)
957 {
958 struct panel_edp *panel = dev_get_drvdata(dev);
959
960 drm_panel_disable(&panel->base);
961 drm_panel_unprepare(&panel->base);
962 }
963
964 static const struct display_timing auo_b101ean01_timing = {
965 .pixelclock = { 65300000, 72500000, 75000000 },
966 .hactive = { 1280, 1280, 1280 },
967 .hfront_porch = { 18, 119, 119 },
968 .hback_porch = { 21, 21, 21 },
969 .hsync_len = { 32, 32, 32 },
970 .vactive = { 800, 800, 800 },
971 .vfront_porch = { 4, 4, 4 },
972 .vback_porch = { 8, 8, 8 },
973 .vsync_len = { 18, 20, 20 },
974 };
975
976 static const struct panel_desc auo_b101ean01 = {
977 .timings = &auo_b101ean01_timing,
978 .num_timings = 1,
979 .bpc = 6,
980 .size = {
981 .width = 217,
982 .height = 136,
983 },
984 };
985
986 static const struct drm_display_mode auo_b116xak01_mode = {
987 .clock = 69300,
988 .hdisplay = 1366,
989 .hsync_start = 1366 + 48,
990 .hsync_end = 1366 + 48 + 32,
991 .htotal = 1366 + 48 + 32 + 10,
992 .vdisplay = 768,
993 .vsync_start = 768 + 4,
994 .vsync_end = 768 + 4 + 6,
995 .vtotal = 768 + 4 + 6 + 15,
996 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
997 };
998
999 static const struct panel_desc auo_b116xak01 = {
1000 .modes = &auo_b116xak01_mode,
1001 .num_modes = 1,
1002 .bpc = 6,
1003 .size = {
1004 .width = 256,
1005 .height = 144,
1006 },
1007 .delay = {
1008 .hpd_absent = 200,
1009 .unprepare = 500,
1010 .enable = 50,
1011 },
1012 };
1013
1014 static const struct drm_display_mode auo_b133han05_mode = {
1015 .clock = 142600,
1016 .hdisplay = 1920,
1017 .hsync_start = 1920 + 58,
1018 .hsync_end = 1920 + 58 + 42,
1019 .htotal = 1920 + 58 + 42 + 60,
1020 .vdisplay = 1080,
1021 .vsync_start = 1080 + 3,
1022 .vsync_end = 1080 + 3 + 5,
1023 .vtotal = 1080 + 3 + 5 + 54,
1024 };
1025
1026 static const struct panel_desc auo_b133han05 = {
1027 .modes = &auo_b133han05_mode,
1028 .num_modes = 1,
1029 .bpc = 8,
1030 .size = {
1031 .width = 293,
1032 .height = 165,
1033 },
1034 .delay = {
1035 .hpd_reliable = 100,
1036 .enable = 20,
1037 .unprepare = 50,
1038 },
1039 };
1040
1041 static const struct drm_display_mode auo_b133htn01_mode = {
1042 .clock = 150660,
1043 .hdisplay = 1920,
1044 .hsync_start = 1920 + 172,
1045 .hsync_end = 1920 + 172 + 80,
1046 .htotal = 1920 + 172 + 80 + 60,
1047 .vdisplay = 1080,
1048 .vsync_start = 1080 + 25,
1049 .vsync_end = 1080 + 25 + 10,
1050 .vtotal = 1080 + 25 + 10 + 10,
1051 };
1052
1053 static const struct panel_desc auo_b133htn01 = {
1054 .modes = &auo_b133htn01_mode,
1055 .num_modes = 1,
1056 .bpc = 6,
1057 .size = {
1058 .width = 293,
1059 .height = 165,
1060 },
1061 .delay = {
1062 .hpd_reliable = 105,
1063 .enable = 20,
1064 .unprepare = 50,
1065 },
1066 };
1067
1068 static const struct drm_display_mode auo_b133xtn01_mode = {
1069 .clock = 69500,
1070 .hdisplay = 1366,
1071 .hsync_start = 1366 + 48,
1072 .hsync_end = 1366 + 48 + 32,
1073 .htotal = 1366 + 48 + 32 + 20,
1074 .vdisplay = 768,
1075 .vsync_start = 768 + 3,
1076 .vsync_end = 768 + 3 + 6,
1077 .vtotal = 768 + 3 + 6 + 13,
1078 };
1079
1080 static const struct panel_desc auo_b133xtn01 = {
1081 .modes = &auo_b133xtn01_mode,
1082 .num_modes = 1,
1083 .bpc = 6,
1084 .size = {
1085 .width = 293,
1086 .height = 165,
1087 },
1088 };
1089
1090 static const struct drm_display_mode auo_b140han06_mode = {
1091 .clock = 141000,
1092 .hdisplay = 1920,
1093 .hsync_start = 1920 + 16,
1094 .hsync_end = 1920 + 16 + 16,
1095 .htotal = 1920 + 16 + 16 + 152,
1096 .vdisplay = 1080,
1097 .vsync_start = 1080 + 3,
1098 .vsync_end = 1080 + 3 + 14,
1099 .vtotal = 1080 + 3 + 14 + 19,
1100 };
1101
1102 static const struct panel_desc auo_b140han06 = {
1103 .modes = &auo_b140han06_mode,
1104 .num_modes = 1,
1105 .bpc = 8,
1106 .size = {
1107 .width = 309,
1108 .height = 174,
1109 },
1110 .delay = {
1111 .hpd_reliable = 100,
1112 .enable = 20,
1113 .unprepare = 50,
1114 },
1115 };
1116
1117 static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
1118 {
1119 .clock = 71900,
1120 .hdisplay = 1280,
1121 .hsync_start = 1280 + 48,
1122 .hsync_end = 1280 + 48 + 32,
1123 .htotal = 1280 + 48 + 32 + 80,
1124 .vdisplay = 800,
1125 .vsync_start = 800 + 3,
1126 .vsync_end = 800 + 3 + 5,
1127 .vtotal = 800 + 3 + 5 + 24,
1128 },
1129 {
1130 .clock = 57500,
1131 .hdisplay = 1280,
1132 .hsync_start = 1280 + 48,
1133 .hsync_end = 1280 + 48 + 32,
1134 .htotal = 1280 + 48 + 32 + 80,
1135 .vdisplay = 800,
1136 .vsync_start = 800 + 3,
1137 .vsync_end = 800 + 3 + 5,
1138 .vtotal = 800 + 3 + 5 + 24,
1139 },
1140 };
1141
1142 static const struct panel_desc boe_nv101wxmn51 = {
1143 .modes = boe_nv101wxmn51_modes,
1144 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
1145 .bpc = 8,
1146 .size = {
1147 .width = 217,
1148 .height = 136,
1149 },
1150 .delay = {
1151 /* TODO: should be hpd-absent and no-hpd should be set? */
1152 .hpd_reliable = 210,
1153 .enable = 50,
1154 .unprepare = 160,
1155 },
1156 };
1157
1158 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
1159 {
1160 .clock = 207800,
1161 .hdisplay = 2160,
1162 .hsync_start = 2160 + 48,
1163 .hsync_end = 2160 + 48 + 32,
1164 .htotal = 2160 + 48 + 32 + 100,
1165 .vdisplay = 1440,
1166 .vsync_start = 1440 + 3,
1167 .vsync_end = 1440 + 3 + 6,
1168 .vtotal = 1440 + 3 + 6 + 31,
1169 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1170 },
1171 {
1172 .clock = 138500,
1173 .hdisplay = 2160,
1174 .hsync_start = 2160 + 48,
1175 .hsync_end = 2160 + 48 + 32,
1176 .htotal = 2160 + 48 + 32 + 100,
1177 .vdisplay = 1440,
1178 .vsync_start = 1440 + 3,
1179 .vsync_end = 1440 + 3 + 6,
1180 .vtotal = 1440 + 3 + 6 + 31,
1181 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1182 },
1183 };
1184
1185 static const struct panel_desc boe_nv110wtm_n61 = {
1186 .modes = boe_nv110wtm_n61_modes,
1187 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
1188 .bpc = 8,
1189 .size = {
1190 .width = 233,
1191 .height = 155,
1192 },
1193 .delay = {
1194 .hpd_absent = 200,
1195 .prepare_to_enable = 80,
1196 .enable = 50,
1197 .unprepare = 500,
1198 },
1199 };
1200
1201 /* Also used for boe_nv133fhm_n62 */
1202 static const struct drm_display_mode boe_nv133fhm_n61_modes = {
1203 .clock = 147840,
1204 .hdisplay = 1920,
1205 .hsync_start = 1920 + 48,
1206 .hsync_end = 1920 + 48 + 32,
1207 .htotal = 1920 + 48 + 32 + 200,
1208 .vdisplay = 1080,
1209 .vsync_start = 1080 + 3,
1210 .vsync_end = 1080 + 3 + 6,
1211 .vtotal = 1080 + 3 + 6 + 31,
1212 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1213 };
1214
1215 /* Also used for boe_nv133fhm_n62 */
1216 static const struct panel_desc boe_nv133fhm_n61 = {
1217 .modes = &boe_nv133fhm_n61_modes,
1218 .num_modes = 1,
1219 .bpc = 6,
1220 .size = {
1221 .width = 294,
1222 .height = 165,
1223 },
1224 .delay = {
1225 /*
1226 * When power is first given to the panel there's a short
1227 * spike on the HPD line. It was explained that this spike
1228 * was until the TCON data download was complete. On
1229 * one system this was measured at 8 ms. We'll put 15 ms
1230 * in the prepare delay just to be safe. That means:
1231 * - If HPD isn't hooked up you still have 200 ms delay.
1232 * - If HPD is hooked up we won't try to look at it for the
1233 * first 15 ms.
1234 */
1235 .hpd_reliable = 15,
1236 .hpd_absent = 200,
1237
1238 .unprepare = 500,
1239 },
1240 };
1241
1242 static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
1243 {
1244 .clock = 148500,
1245 .hdisplay = 1920,
1246 .hsync_start = 1920 + 48,
1247 .hsync_end = 1920 + 48 + 32,
1248 .htotal = 2200,
1249 .vdisplay = 1080,
1250 .vsync_start = 1080 + 3,
1251 .vsync_end = 1080 + 3 + 5,
1252 .vtotal = 1125,
1253 },
1254 };
1255
1256 static const struct panel_desc boe_nv140fhmn49 = {
1257 .modes = boe_nv140fhmn49_modes,
1258 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
1259 .bpc = 6,
1260 .size = {
1261 .width = 309,
1262 .height = 174,
1263 },
1264 .delay = {
1265 /* TODO: should be hpd-absent and no-hpd should be set? */
1266 .hpd_reliable = 210,
1267 .enable = 50,
1268 .unprepare = 160,
1269 },
1270 };
1271
1272 static const struct drm_display_mode innolux_n116bca_ea1_mode = {
1273 .clock = 76420,
1274 .hdisplay = 1366,
1275 .hsync_start = 1366 + 136,
1276 .hsync_end = 1366 + 136 + 30,
1277 .htotal = 1366 + 136 + 30 + 60,
1278 .vdisplay = 768,
1279 .vsync_start = 768 + 8,
1280 .vsync_end = 768 + 8 + 12,
1281 .vtotal = 768 + 8 + 12 + 12,
1282 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1283 };
1284
1285 static const struct panel_desc innolux_n116bca_ea1 = {
1286 .modes = &innolux_n116bca_ea1_mode,
1287 .num_modes = 1,
1288 .bpc = 6,
1289 .size = {
1290 .width = 256,
1291 .height = 144,
1292 },
1293 .delay = {
1294 .hpd_absent = 200,
1295 .enable = 80,
1296 .disable = 50,
1297 .unprepare = 500,
1298 },
1299 };
1300
1301 /*
1302 * Datasheet specifies that at 60 Hz refresh rate:
1303 * - total horizontal time: { 1506, 1592, 1716 }
1304 * - total vertical time: { 788, 800, 868 }
1305 *
1306 * ...but doesn't go into exactly how that should be split into a front
1307 * porch, back porch, or sync length. For now we'll leave a single setting
1308 * here which allows a bit of tweaking of the pixel clock at the expense of
1309 * refresh rate.
1310 */
1311 static const struct display_timing innolux_n116bge_timing = {
1312 .pixelclock = { 72600000, 76420000, 80240000 },
1313 .hactive = { 1366, 1366, 1366 },
1314 .hfront_porch = { 136, 136, 136 },
1315 .hback_porch = { 60, 60, 60 },
1316 .hsync_len = { 30, 30, 30 },
1317 .vactive = { 768, 768, 768 },
1318 .vfront_porch = { 8, 8, 8 },
1319 .vback_porch = { 12, 12, 12 },
1320 .vsync_len = { 12, 12, 12 },
1321 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1322 };
1323
1324 static const struct panel_desc innolux_n116bge = {
1325 .timings = &innolux_n116bge_timing,
1326 .num_timings = 1,
1327 .bpc = 6,
1328 .size = {
1329 .width = 256,
1330 .height = 144,
1331 },
1332 };
1333
1334 static const struct drm_display_mode innolux_n125hce_gn1_mode = {
1335 .clock = 162000,
1336 .hdisplay = 1920,
1337 .hsync_start = 1920 + 40,
1338 .hsync_end = 1920 + 40 + 40,
1339 .htotal = 1920 + 40 + 40 + 80,
1340 .vdisplay = 1080,
1341 .vsync_start = 1080 + 4,
1342 .vsync_end = 1080 + 4 + 4,
1343 .vtotal = 1080 + 4 + 4 + 24,
1344 };
1345
1346 static const struct panel_desc innolux_n125hce_gn1 = {
1347 .modes = &innolux_n125hce_gn1_mode,
1348 .num_modes = 1,
1349 .bpc = 8,
1350 .size = {
1351 .width = 276,
1352 .height = 155,
1353 },
1354 };
1355
1356 static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
1357 .clock = 206016,
1358 .hdisplay = 2160,
1359 .hsync_start = 2160 + 48,
1360 .hsync_end = 2160 + 48 + 32,
1361 .htotal = 2160 + 48 + 32 + 80,
1362 .vdisplay = 1440,
1363 .vsync_start = 1440 + 3,
1364 .vsync_end = 1440 + 3 + 10,
1365 .vtotal = 1440 + 3 + 10 + 27,
1366 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1367 };
1368
1369 static const struct panel_desc innolux_p120zdg_bf1 = {
1370 .modes = &innolux_p120zdg_bf1_mode,
1371 .num_modes = 1,
1372 .bpc = 8,
1373 .size = {
1374 .width = 254,
1375 .height = 169,
1376 },
1377 .delay = {
1378 .hpd_absent = 200,
1379 .unprepare = 500,
1380 },
1381 };
1382
1383 static const struct drm_display_mode ivo_m133nwf4_r0_mode = {
1384 .clock = 138778,
1385 .hdisplay = 1920,
1386 .hsync_start = 1920 + 24,
1387 .hsync_end = 1920 + 24 + 48,
1388 .htotal = 1920 + 24 + 48 + 88,
1389 .vdisplay = 1080,
1390 .vsync_start = 1080 + 3,
1391 .vsync_end = 1080 + 3 + 12,
1392 .vtotal = 1080 + 3 + 12 + 17,
1393 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1394 };
1395
1396 static const struct panel_desc ivo_m133nwf4_r0 = {
1397 .modes = &ivo_m133nwf4_r0_mode,
1398 .num_modes = 1,
1399 .bpc = 8,
1400 .size = {
1401 .width = 294,
1402 .height = 165,
1403 },
1404 .delay = {
1405 .hpd_absent = 200,
1406 .unprepare = 500,
1407 },
1408 };
1409
1410 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
1411 .clock = 81000,
1412 .hdisplay = 1366,
1413 .hsync_start = 1366 + 40,
1414 .hsync_end = 1366 + 40 + 32,
1415 .htotal = 1366 + 40 + 32 + 62,
1416 .vdisplay = 768,
1417 .vsync_start = 768 + 5,
1418 .vsync_end = 768 + 5 + 5,
1419 .vtotal = 768 + 5 + 5 + 122,
1420 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1421 };
1422
1423 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
1424 .modes = &kingdisplay_kd116n21_30nv_a010_mode,
1425 .num_modes = 1,
1426 .bpc = 6,
1427 .size = {
1428 .width = 256,
1429 .height = 144,
1430 },
1431 .delay = {
1432 .hpd_absent = 200,
1433 },
1434 };
1435
1436 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
1437 .clock = 200000,
1438 .hdisplay = 1536,
1439 .hsync_start = 1536 + 12,
1440 .hsync_end = 1536 + 12 + 16,
1441 .htotal = 1536 + 12 + 16 + 48,
1442 .vdisplay = 2048,
1443 .vsync_start = 2048 + 8,
1444 .vsync_end = 2048 + 8 + 4,
1445 .vtotal = 2048 + 8 + 4 + 8,
1446 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1447 };
1448
1449 static const struct panel_desc lg_lp079qx1_sp0v = {
1450 .modes = &lg_lp079qx1_sp0v_mode,
1451 .num_modes = 1,
1452 .size = {
1453 .width = 129,
1454 .height = 171,
1455 },
1456 };
1457
1458 static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
1459 .clock = 205210,
1460 .hdisplay = 2048,
1461 .hsync_start = 2048 + 150,
1462 .hsync_end = 2048 + 150 + 5,
1463 .htotal = 2048 + 150 + 5 + 5,
1464 .vdisplay = 1536,
1465 .vsync_start = 1536 + 3,
1466 .vsync_end = 1536 + 3 + 1,
1467 .vtotal = 1536 + 3 + 1 + 9,
1468 };
1469
1470 static const struct panel_desc lg_lp097qx1_spa1 = {
1471 .modes = &lg_lp097qx1_spa1_mode,
1472 .num_modes = 1,
1473 .size = {
1474 .width = 208,
1475 .height = 147,
1476 },
1477 };
1478
1479 static const struct drm_display_mode lg_lp120up1_mode = {
1480 .clock = 162300,
1481 .hdisplay = 1920,
1482 .hsync_start = 1920 + 40,
1483 .hsync_end = 1920 + 40 + 40,
1484 .htotal = 1920 + 40 + 40 + 80,
1485 .vdisplay = 1280,
1486 .vsync_start = 1280 + 4,
1487 .vsync_end = 1280 + 4 + 4,
1488 .vtotal = 1280 + 4 + 4 + 12,
1489 };
1490
1491 static const struct panel_desc lg_lp120up1 = {
1492 .modes = &lg_lp120up1_mode,
1493 .num_modes = 1,
1494 .bpc = 8,
1495 .size = {
1496 .width = 267,
1497 .height = 183,
1498 },
1499 };
1500
1501 static const struct drm_display_mode lg_lp129qe_mode = {
1502 .clock = 285250,
1503 .hdisplay = 2560,
1504 .hsync_start = 2560 + 48,
1505 .hsync_end = 2560 + 48 + 32,
1506 .htotal = 2560 + 48 + 32 + 80,
1507 .vdisplay = 1700,
1508 .vsync_start = 1700 + 3,
1509 .vsync_end = 1700 + 3 + 10,
1510 .vtotal = 1700 + 3 + 10 + 36,
1511 };
1512
1513 static const struct panel_desc lg_lp129qe = {
1514 .modes = &lg_lp129qe_mode,
1515 .num_modes = 1,
1516 .bpc = 8,
1517 .size = {
1518 .width = 272,
1519 .height = 181,
1520 },
1521 };
1522
1523 static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
1524 {
1525 .clock = 138500,
1526 .hdisplay = 1920,
1527 .hsync_start = 1920 + 48,
1528 .hsync_end = 1920 + 48 + 32,
1529 .htotal = 1920 + 48 + 32 + 80,
1530 .vdisplay = 1080,
1531 .vsync_start = 1080 + 3,
1532 .vsync_end = 1080 + 3 + 5,
1533 .vtotal = 1080 + 3 + 5 + 23,
1534 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1535 }, {
1536 .clock = 110920,
1537 .hdisplay = 1920,
1538 .hsync_start = 1920 + 48,
1539 .hsync_end = 1920 + 48 + 32,
1540 .htotal = 1920 + 48 + 32 + 80,
1541 .vdisplay = 1080,
1542 .vsync_start = 1080 + 3,
1543 .vsync_end = 1080 + 3 + 5,
1544 .vtotal = 1080 + 3 + 5 + 23,
1545 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1546 }
1547 };
1548
1549 static const struct panel_desc neweast_wjfh116008a = {
1550 .modes = neweast_wjfh116008a_modes,
1551 .num_modes = 2,
1552 .bpc = 6,
1553 .size = {
1554 .width = 260,
1555 .height = 150,
1556 },
1557 .delay = {
1558 .hpd_reliable = 110,
1559 .enable = 20,
1560 .unprepare = 500,
1561 },
1562 };
1563
1564 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
1565 .clock = 271560,
1566 .hdisplay = 2560,
1567 .hsync_start = 2560 + 48,
1568 .hsync_end = 2560 + 48 + 32,
1569 .htotal = 2560 + 48 + 32 + 80,
1570 .vdisplay = 1600,
1571 .vsync_start = 1600 + 2,
1572 .vsync_end = 1600 + 2 + 5,
1573 .vtotal = 1600 + 2 + 5 + 57,
1574 };
1575
1576 static const struct panel_desc samsung_lsn122dl01_c01 = {
1577 .modes = &samsung_lsn122dl01_c01_mode,
1578 .num_modes = 1,
1579 .size = {
1580 .width = 263,
1581 .height = 164,
1582 },
1583 };
1584
1585 static const struct drm_display_mode samsung_ltn140at29_301_mode = {
1586 .clock = 76300,
1587 .hdisplay = 1366,
1588 .hsync_start = 1366 + 64,
1589 .hsync_end = 1366 + 64 + 48,
1590 .htotal = 1366 + 64 + 48 + 128,
1591 .vdisplay = 768,
1592 .vsync_start = 768 + 2,
1593 .vsync_end = 768 + 2 + 5,
1594 .vtotal = 768 + 2 + 5 + 17,
1595 };
1596
1597 static const struct panel_desc samsung_ltn140at29_301 = {
1598 .modes = &samsung_ltn140at29_301_mode,
1599 .num_modes = 1,
1600 .bpc = 6,
1601 .size = {
1602 .width = 320,
1603 .height = 187,
1604 },
1605 };
1606
1607 static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
1608 .clock = 168480,
1609 .hdisplay = 1920,
1610 .hsync_start = 1920 + 48,
1611 .hsync_end = 1920 + 48 + 32,
1612 .htotal = 1920 + 48 + 32 + 80,
1613 .vdisplay = 1280,
1614 .vsync_start = 1280 + 3,
1615 .vsync_end = 1280 + 3 + 10,
1616 .vtotal = 1280 + 3 + 10 + 57,
1617 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1618 };
1619
1620 static const struct panel_desc sharp_ld_d5116z01b = {
1621 .modes = &sharp_ld_d5116z01b_mode,
1622 .num_modes = 1,
1623 .bpc = 8,
1624 .size = {
1625 .width = 260,
1626 .height = 120,
1627 },
1628 };
1629
1630 static const struct display_timing sharp_lq123p1jx31_timing = {
1631 .pixelclock = { 252750000, 252750000, 266604720 },
1632 .hactive = { 2400, 2400, 2400 },
1633 .hfront_porch = { 48, 48, 48 },
1634 .hback_porch = { 80, 80, 84 },
1635 .hsync_len = { 32, 32, 32 },
1636 .vactive = { 1600, 1600, 1600 },
1637 .vfront_porch = { 3, 3, 3 },
1638 .vback_porch = { 33, 33, 120 },
1639 .vsync_len = { 10, 10, 10 },
1640 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1641 };
1642
1643 static const struct panel_desc sharp_lq123p1jx31 = {
1644 .timings = &sharp_lq123p1jx31_timing,
1645 .num_timings = 1,
1646 .bpc = 8,
1647 .size = {
1648 .width = 259,
1649 .height = 173,
1650 },
1651 .delay = {
1652 .hpd_reliable = 110,
1653 .enable = 50,
1654 .unprepare = 550,
1655 },
1656 };
1657
1658 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = {
1659 {
1660 .clock = 346500,
1661 .hdisplay = 1920,
1662 .hsync_start = 1920 + 48,
1663 .hsync_end = 1920 + 48 + 32,
1664 .htotal = 1920 + 48 + 32 + 80,
1665 .vdisplay = 1080,
1666 .vsync_start = 1080 + 3,
1667 .vsync_end = 1080 + 3 + 5,
1668 .vtotal = 1080 + 3 + 5 + 69,
1669 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1670 }, {
1671 .clock = 144370,
1672 .hdisplay = 1920,
1673 .hsync_start = 1920 + 48,
1674 .hsync_end = 1920 + 48 + 32,
1675 .htotal = 1920 + 48 + 32 + 80,
1676 .vdisplay = 1080,
1677 .vsync_start = 1080 + 3,
1678 .vsync_end = 1080 + 3 + 5,
1679 .vtotal = 1080 + 3 + 5 + 69,
1680 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1681 },
1682 };
1683
1684 static const struct panel_desc sharp_lq140m1jw46 = {
1685 .modes = sharp_lq140m1jw46_mode,
1686 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode),
1687 .bpc = 8,
1688 .size = {
1689 .width = 309,
1690 .height = 174,
1691 },
1692 .delay = {
1693 .hpd_absent = 80,
1694 .enable = 50,
1695 .unprepare = 500,
1696 },
1697 };
1698
1699 static const struct drm_display_mode starry_kr122ea0sra_mode = {
1700 .clock = 147000,
1701 .hdisplay = 1920,
1702 .hsync_start = 1920 + 16,
1703 .hsync_end = 1920 + 16 + 16,
1704 .htotal = 1920 + 16 + 16 + 32,
1705 .vdisplay = 1200,
1706 .vsync_start = 1200 + 15,
1707 .vsync_end = 1200 + 15 + 2,
1708 .vtotal = 1200 + 15 + 2 + 18,
1709 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1710 };
1711
1712 static const struct panel_desc starry_kr122ea0sra = {
1713 .modes = &starry_kr122ea0sra_mode,
1714 .num_modes = 1,
1715 .size = {
1716 .width = 263,
1717 .height = 164,
1718 },
1719 .delay = {
1720 /* TODO: should be hpd-absent and no-hpd should be set? */
1721 .hpd_reliable = 10 + 200,
1722 .enable = 50,
1723 .unprepare = 10 + 500,
1724 },
1725 };
1726
1727 static const struct of_device_id platform_of_match[] = {
1728 {
1729 /* Must be first */
1730 .compatible = "edp-panel",
1731 }, {
1732 .compatible = "auo,b101ean01",
1733 .data = &auo_b101ean01,
1734 }, {
1735 .compatible = "auo,b116xa01",
1736 .data = &auo_b116xak01,
1737 }, {
1738 .compatible = "auo,b133han05",
1739 .data = &auo_b133han05,
1740 }, {
1741 .compatible = "auo,b133htn01",
1742 .data = &auo_b133htn01,
1743 }, {
1744 .compatible = "auo,b133xtn01",
1745 .data = &auo_b133xtn01,
1746 }, {
1747 .compatible = "auo,b140han06",
1748 .data = &auo_b140han06,
1749 }, {
1750 .compatible = "boe,nv101wxmn51",
1751 .data = &boe_nv101wxmn51,
1752 }, {
1753 .compatible = "boe,nv110wtm-n61",
1754 .data = &boe_nv110wtm_n61,
1755 }, {
1756 .compatible = "boe,nv133fhm-n61",
1757 .data = &boe_nv133fhm_n61,
1758 }, {
1759 .compatible = "boe,nv133fhm-n62",
1760 .data = &boe_nv133fhm_n61,
1761 }, {
1762 .compatible = "boe,nv140fhmn49",
1763 .data = &boe_nv140fhmn49,
1764 }, {
1765 .compatible = "innolux,n116bca-ea1",
1766 .data = &innolux_n116bca_ea1,
1767 }, {
1768 .compatible = "innolux,n116bge",
1769 .data = &innolux_n116bge,
1770 }, {
1771 .compatible = "innolux,n125hce-gn1",
1772 .data = &innolux_n125hce_gn1,
1773 }, {
1774 .compatible = "innolux,p120zdg-bf1",
1775 .data = &innolux_p120zdg_bf1,
1776 }, {
1777 .compatible = "ivo,m133nwf4-r0",
1778 .data = &ivo_m133nwf4_r0,
1779 }, {
1780 .compatible = "kingdisplay,kd116n21-30nv-a010",
1781 .data = &kingdisplay_kd116n21_30nv_a010,
1782 }, {
1783 .compatible = "lg,lp079qx1-sp0v",
1784 .data = &lg_lp079qx1_sp0v,
1785 }, {
1786 .compatible = "lg,lp097qx1-spa1",
1787 .data = &lg_lp097qx1_spa1,
1788 }, {
1789 .compatible = "lg,lp120up1",
1790 .data = &lg_lp120up1,
1791 }, {
1792 .compatible = "lg,lp129qe",
1793 .data = &lg_lp129qe,
1794 }, {
1795 .compatible = "neweast,wjfh116008a",
1796 .data = &neweast_wjfh116008a,
1797 }, {
1798 .compatible = "samsung,lsn122dl01-c01",
1799 .data = &samsung_lsn122dl01_c01,
1800 }, {
1801 .compatible = "samsung,ltn140at29-301",
1802 .data = &samsung_ltn140at29_301,
1803 }, {
1804 .compatible = "sharp,ld-d5116z01b",
1805 .data = &sharp_ld_d5116z01b,
1806 }, {
1807 .compatible = "sharp,lq123p1jx31",
1808 .data = &sharp_lq123p1jx31,
1809 }, {
1810 .compatible = "sharp,lq140m1jw46",
1811 .data = &sharp_lq140m1jw46,
1812 }, {
1813 .compatible = "starry,kr122ea0sra",
1814 .data = &starry_kr122ea0sra,
1815 }, {
1816 /* sentinel */
1817 }
1818 };
1819 MODULE_DEVICE_TABLE(of, platform_of_match);
1820
1821 static const struct panel_delay delay_200_500_p2e80 = {
1822 .hpd_absent = 200,
1823 .unprepare = 500,
1824 .prepare_to_enable = 80,
1825 };
1826
1827 static const struct panel_delay delay_200_500_p2e100 = {
1828 .hpd_absent = 200,
1829 .unprepare = 500,
1830 .prepare_to_enable = 100,
1831 };
1832
1833 static const struct panel_delay delay_200_500_e50 = {
1834 .hpd_absent = 200,
1835 .unprepare = 500,
1836 .enable = 50,
1837 };
1838
1839 static const struct panel_delay delay_200_500_e80_d50 = {
1840 .hpd_absent = 200,
1841 .unprepare = 500,
1842 .enable = 80,
1843 .disable = 50,
1844 };
1845
1846 static const struct panel_delay delay_100_500_e200 = {
1847 .hpd_absent = 100,
1848 .unprepare = 500,
1849 .enable = 200,
1850 };
1851
1852 static const struct panel_delay delay_200_500_e200 = {
1853 .hpd_absent = 200,
1854 .unprepare = 500,
1855 .enable = 200,
1856 };
1857
1858 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
1859 { \
1860 .name = _name, \
1861 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1862 product_id), \
1863 .delay = _delay \
1864 }
1865
1866 #define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \
1867 { \
1868 .name = _name, \
1869 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1870 product_id), \
1871 .delay = _delay, \
1872 .override_edid_mode = _mode \
1873 }
1874
1875 /*
1876 * This table is used to figure out power sequencing delays for panels that
1877 * are detected by EDID. Entries here may point to entries in the
1878 * platform_of_match table (if a panel is listed in both places).
1879 *
1880 * Sort first by vendor, then by product ID.
1881 */
1882 static const struct edp_panel_entry edp_panels[] = {
1883 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
1884 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"),
1885 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
1886 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
1887 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"),
1888 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0"),
1889 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"),
1890 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
1891 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
1892
1893 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
1894 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
1895 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
1896 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"),
1897 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"),
1898 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"),
1899 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"),
1900 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"),
1901 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
1902 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
1903 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
1904
1905 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"),
1906 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
1907 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"),
1908 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"),
1909 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"),
1910 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
1911 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"),
1912
1913 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
1914 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"),
1915 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"),
1916
1917 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
1918 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
1919
1920 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
1921 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"),
1922 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
1923
1924 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
1925
1926 { /* sentinal */ }
1927 };
1928
find_edp_panel(u32 panel_id)1929 static const struct edp_panel_entry *find_edp_panel(u32 panel_id)
1930 {
1931 const struct edp_panel_entry *panel;
1932
1933 if (!panel_id)
1934 return NULL;
1935
1936 for (panel = edp_panels; panel->panel_id; panel++)
1937 if (panel->panel_id == panel_id)
1938 return panel;
1939
1940 return NULL;
1941 }
1942
panel_edp_platform_probe(struct platform_device * pdev)1943 static int panel_edp_platform_probe(struct platform_device *pdev)
1944 {
1945 const struct of_device_id *id;
1946
1947 /* Skip one since "edp-panel" is only supported on DP AUX bus */
1948 id = of_match_node(platform_of_match + 1, pdev->dev.of_node);
1949 if (!id)
1950 return -ENODEV;
1951
1952 return panel_edp_probe(&pdev->dev, id->data, NULL);
1953 }
1954
panel_edp_platform_remove(struct platform_device * pdev)1955 static void panel_edp_platform_remove(struct platform_device *pdev)
1956 {
1957 panel_edp_remove(&pdev->dev);
1958 }
1959
panel_edp_platform_shutdown(struct platform_device * pdev)1960 static void panel_edp_platform_shutdown(struct platform_device *pdev)
1961 {
1962 panel_edp_shutdown(&pdev->dev);
1963 }
1964
1965 static const struct dev_pm_ops panel_edp_pm_ops = {
1966 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
1967 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1968 pm_runtime_force_resume)
1969 };
1970
1971 static struct platform_driver panel_edp_platform_driver = {
1972 .driver = {
1973 .name = "panel-edp",
1974 .of_match_table = platform_of_match,
1975 .pm = &panel_edp_pm_ops,
1976 },
1977 .probe = panel_edp_platform_probe,
1978 .remove_new = panel_edp_platform_remove,
1979 .shutdown = panel_edp_platform_shutdown,
1980 };
1981
panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device * aux_ep)1982 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
1983 {
1984 const struct of_device_id *id;
1985
1986 id = of_match_node(platform_of_match, aux_ep->dev.of_node);
1987 if (!id)
1988 return -ENODEV;
1989
1990 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux);
1991 }
1992
panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device * aux_ep)1993 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
1994 {
1995 panel_edp_remove(&aux_ep->dev);
1996 }
1997
panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device * aux_ep)1998 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
1999 {
2000 panel_edp_shutdown(&aux_ep->dev);
2001 }
2002
2003 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
2004 .driver = {
2005 .name = "panel-simple-dp-aux",
2006 .of_match_table = platform_of_match, /* Same as platform one! */
2007 .pm = &panel_edp_pm_ops,
2008 },
2009 .probe = panel_edp_dp_aux_ep_probe,
2010 .remove = panel_edp_dp_aux_ep_remove,
2011 .shutdown = panel_edp_dp_aux_ep_shutdown,
2012 };
2013
panel_edp_init(void)2014 static int __init panel_edp_init(void)
2015 {
2016 int err;
2017
2018 err = platform_driver_register(&panel_edp_platform_driver);
2019 if (err < 0)
2020 return err;
2021
2022 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
2023 if (err < 0)
2024 goto err_did_platform_register;
2025
2026 return 0;
2027
2028 err_did_platform_register:
2029 platform_driver_unregister(&panel_edp_platform_driver);
2030
2031 return err;
2032 }
2033 module_init(panel_edp_init);
2034
panel_edp_exit(void)2035 static void __exit panel_edp_exit(void)
2036 {
2037 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver);
2038 platform_driver_unregister(&panel_edp_platform_driver);
2039 }
2040 module_exit(panel_edp_exit);
2041
2042 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
2043 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
2044 MODULE_LICENSE("GPL and additional rights");
2045