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 drm_dp_dpcd_set_powered(p->aux, false);
401 gpiod_set_value_cansleep(p->enable_gpio, 0);
402 regulator_disable(p->supply);
403 p->unprepared_time = ktime_get_boottime();
404
405 return 0;
406 }
407
panel_edp_unprepare(struct drm_panel * panel)408 static int panel_edp_unprepare(struct drm_panel *panel)
409 {
410 struct panel_edp *p = to_panel_edp(panel);
411 int ret;
412
413 /* Unpreparing when already unprepared is a no-op */
414 if (!p->prepared)
415 return 0;
416
417 ret = pm_runtime_put_sync_suspend(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 drm_dp_dpcd_set_powered(p->aux, true);
458
459 delay = p->desc->delay.hpd_reliable;
460 if (p->no_hpd)
461 delay = max(delay, p->desc->delay.hpd_absent);
462 if (delay)
463 msleep(delay);
464
465 if (panel_edp_can_read_hpd(p)) {
466 if (p->desc->delay.hpd_absent)
467 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL;
468 else
469 hpd_wait_us = 2000000;
470
471 if (p->hpd_gpio) {
472 err = readx_poll_timeout(gpiod_get_value_cansleep,
473 p->hpd_gpio, hpd_asserted,
474 hpd_asserted, 1000, hpd_wait_us);
475 if (hpd_asserted < 0)
476 err = hpd_asserted;
477 } else {
478 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us);
479 }
480
481 if (err) {
482 if (err != -ETIMEDOUT)
483 dev_err(dev,
484 "error waiting for hpd GPIO: %d\n", err);
485 goto error;
486 }
487 }
488
489 p->prepared_time = ktime_get_boottime();
490
491 return 0;
492
493 error:
494 drm_dp_dpcd_set_powered(p->aux, false);
495 gpiod_set_value_cansleep(p->enable_gpio, 0);
496 regulator_disable(p->supply);
497 p->unprepared_time = ktime_get_boottime();
498
499 return err;
500 }
501
502 /*
503 * Some panels simply don't always come up and need to be power cycled to
504 * work properly. We'll allow for a handful of retries.
505 */
506 #define MAX_PANEL_PREPARE_TRIES 5
507
panel_edp_resume(struct device * dev)508 static int panel_edp_resume(struct device *dev)
509 {
510 struct panel_edp *p = dev_get_drvdata(dev);
511 int ret;
512 int try;
513
514 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) {
515 ret = panel_edp_prepare_once(p);
516 if (ret != -ETIMEDOUT)
517 break;
518 }
519
520 if (ret == -ETIMEDOUT)
521 dev_err(dev, "Prepare timeout after %d tries\n", try);
522 else if (try)
523 dev_warn(dev, "Prepare needed %d retries\n", try);
524
525 return ret;
526 }
527
panel_edp_prepare(struct drm_panel * panel)528 static int panel_edp_prepare(struct drm_panel *panel)
529 {
530 struct panel_edp *p = to_panel_edp(panel);
531 int ret;
532
533 /* Preparing when already prepared is a no-op */
534 if (p->prepared)
535 return 0;
536
537 ret = pm_runtime_get_sync(panel->dev);
538 if (ret < 0) {
539 pm_runtime_put_autosuspend(panel->dev);
540 return ret;
541 }
542
543 p->prepared = true;
544
545 return 0;
546 }
547
panel_edp_enable(struct drm_panel * panel)548 static int panel_edp_enable(struct drm_panel *panel)
549 {
550 struct panel_edp *p = to_panel_edp(panel);
551 unsigned int delay;
552
553 if (p->enabled)
554 return 0;
555
556 delay = p->desc->delay.enable;
557
558 /*
559 * If there is a "prepare_to_enable" delay then that's supposed to be
560 * the delay from HPD going high until we can turn the backlight on.
561 * However, we can only count this if HPD is readable by the panel
562 * driver.
563 *
564 * If we aren't handling the HPD pin ourselves then the best we
565 * can do is assume that HPD went high immediately before we were
566 * called (and link training took zero time). Note that "no-hpd"
567 * actually counts as handling HPD ourselves since we're doing the
568 * worst case delay (in prepare) ourselves.
569 *
570 * NOTE: if we ever end up in this "if" statement then we're
571 * guaranteed that the panel_edp_wait() call below will do no delay.
572 * It already handles that case, though, so we don't need any special
573 * code for it.
574 */
575 if (p->desc->delay.prepare_to_enable &&
576 !panel_edp_can_read_hpd(p) && !p->no_hpd)
577 delay = max(delay, p->desc->delay.prepare_to_enable);
578
579 if (delay)
580 msleep(delay);
581
582 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
583
584 p->enabled = true;
585
586 return 0;
587 }
588
panel_edp_get_modes(struct drm_panel * panel,struct drm_connector * connector)589 static int panel_edp_get_modes(struct drm_panel *panel,
590 struct drm_connector *connector)
591 {
592 struct panel_edp *p = to_panel_edp(panel);
593 int num = 0;
594 bool has_override_edid_mode = p->detected_panel &&
595 p->detected_panel != ERR_PTR(-EINVAL) &&
596 p->detected_panel->override_edid_mode;
597
598 /* probe EDID if a DDC bus is available */
599 if (p->ddc) {
600 pm_runtime_get_sync(panel->dev);
601
602 if (!p->edid)
603 p->edid = drm_get_edid(connector, p->ddc);
604 if (p->edid) {
605 if (has_override_edid_mode) {
606 /*
607 * override_edid_mode is specified. Use
608 * override_edid_mode instead of from edid.
609 */
610 num += panel_edp_override_edid_mode(p, connector,
611 p->detected_panel->override_edid_mode);
612 } else {
613 num += drm_add_edid_modes(connector, p->edid);
614 }
615 }
616
617 pm_runtime_mark_last_busy(panel->dev);
618 pm_runtime_put_autosuspend(panel->dev);
619 }
620
621 /*
622 * Add hard-coded panel modes. Don't call this if there are no timings
623 * and no modes (the generic edp-panel case) because it will clobber
624 * the display_info that was already set by drm_add_edid_modes().
625 */
626 if (p->desc->num_timings || p->desc->num_modes)
627 num += panel_edp_get_non_edid_modes(p, connector);
628 else if (!num)
629 dev_warn(p->base.dev, "No display modes\n");
630
631 /*
632 * TODO: Remove once all drm drivers call
633 * drm_connector_set_orientation_from_panel()
634 */
635 drm_connector_set_panel_orientation(connector, p->orientation);
636
637 return num;
638 }
639
panel_edp_get_timings(struct drm_panel * panel,unsigned int num_timings,struct display_timing * timings)640 static int panel_edp_get_timings(struct drm_panel *panel,
641 unsigned int num_timings,
642 struct display_timing *timings)
643 {
644 struct panel_edp *p = to_panel_edp(panel);
645 unsigned int i;
646
647 if (p->desc->num_timings < num_timings)
648 num_timings = p->desc->num_timings;
649
650 if (timings)
651 for (i = 0; i < num_timings; i++)
652 timings[i] = p->desc->timings[i];
653
654 return p->desc->num_timings;
655 }
656
panel_edp_get_orientation(struct drm_panel * panel)657 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)
658 {
659 struct panel_edp *p = to_panel_edp(panel);
660
661 return p->orientation;
662 }
663
detected_panel_show(struct seq_file * s,void * data)664 static int detected_panel_show(struct seq_file *s, void *data)
665 {
666 struct drm_panel *panel = s->private;
667 struct panel_edp *p = to_panel_edp(panel);
668
669 if (IS_ERR(p->detected_panel))
670 seq_puts(s, "UNKNOWN\n");
671 else if (!p->detected_panel)
672 seq_puts(s, "HARDCODED\n");
673 else
674 seq_printf(s, "%s\n", p->detected_panel->name);
675
676 return 0;
677 }
678
679 DEFINE_SHOW_ATTRIBUTE(detected_panel);
680
panel_edp_debugfs_init(struct drm_panel * panel,struct dentry * root)681 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
682 {
683 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
684 }
685
686 static const struct drm_panel_funcs panel_edp_funcs = {
687 .disable = panel_edp_disable,
688 .unprepare = panel_edp_unprepare,
689 .prepare = panel_edp_prepare,
690 .enable = panel_edp_enable,
691 .get_modes = panel_edp_get_modes,
692 .get_orientation = panel_edp_get_orientation,
693 .get_timings = panel_edp_get_timings,
694 .debugfs_init = panel_edp_debugfs_init,
695 };
696
697 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
698 (to_check->field.typ >= bounds->field.min && \
699 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)700 static void panel_edp_parse_panel_timing_node(struct device *dev,
701 struct panel_edp *panel,
702 const struct display_timing *ot)
703 {
704 const struct panel_desc *desc = panel->desc;
705 struct videomode vm;
706 unsigned int i;
707
708 if (WARN_ON(desc->num_modes)) {
709 dev_err(dev, "Reject override mode: panel has a fixed mode\n");
710 return;
711 }
712 if (WARN_ON(!desc->num_timings)) {
713 dev_err(dev, "Reject override mode: no timings specified\n");
714 return;
715 }
716
717 for (i = 0; i < panel->desc->num_timings; i++) {
718 const struct display_timing *dt = &panel->desc->timings[i];
719
720 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) ||
721 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) ||
722 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) ||
723 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) ||
724 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) ||
725 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) ||
726 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) ||
727 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len))
728 continue;
729
730 if (ot->flags != dt->flags)
731 continue;
732
733 videomode_from_timing(ot, &vm);
734 drm_display_mode_from_videomode(&vm, &panel->override_mode);
735 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
736 DRM_MODE_TYPE_PREFERRED;
737 break;
738 }
739
740 if (WARN_ON(!panel->override_mode.type))
741 dev_err(dev, "Reject override mode: No display_timing found\n");
742 }
743
744 static const struct edp_panel_entry *find_edp_panel(u32 panel_id);
745
generic_edp_panel_probe(struct device * dev,struct panel_edp * panel)746 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
747 {
748 struct panel_desc *desc;
749 u32 panel_id;
750 char vend[4];
751 u16 product_id;
752 u32 reliable_ms = 0;
753 u32 absent_ms = 0;
754 int ret;
755
756 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
757 if (!desc)
758 return -ENOMEM;
759 panel->desc = desc;
760
761 /*
762 * Read the dts properties for the initial probe. These are used by
763 * the runtime resume code which will get called by the
764 * pm_runtime_get_sync() call below.
765 */
766 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms);
767 desc->delay.hpd_reliable = reliable_ms;
768 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms);
769 desc->delay.hpd_absent = absent_ms;
770
771 /* Power the panel on so we can read the EDID */
772 ret = pm_runtime_get_sync(dev);
773 if (ret < 0) {
774 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret);
775 goto exit;
776 }
777
778 panel_id = drm_edid_get_panel_id(panel->ddc);
779 if (!panel_id) {
780 dev_err(dev, "Couldn't identify panel via EDID\n");
781 ret = -EIO;
782 goto exit;
783 }
784 drm_edid_decode_panel_id(panel_id, vend, &product_id);
785
786 panel->detected_panel = find_edp_panel(panel_id);
787
788 /*
789 * We're using non-optimized timings and want it really obvious that
790 * someone needs to add an entry to the table, so we'll do a WARN_ON
791 * splat.
792 */
793 if (WARN_ON(!panel->detected_panel)) {
794 dev_warn(dev,
795 "Unknown panel %s %#06x, using conservative timings\n",
796 vend, product_id);
797
798 /*
799 * It's highly likely that the panel will work if we use very
800 * conservative timings, so let's do that. We already know that
801 * the HPD-related delays must have worked since we got this
802 * far, so we really just need the "unprepare" / "enable"
803 * delays. We don't need "prepare_to_enable" since that
804 * overlaps the "enable" delay anyway.
805 *
806 * Nearly all panels have a "unprepare" delay of 500 ms though
807 * there are a few with 1000. Let's stick 2000 in just to be
808 * super conservative.
809 *
810 * An "enable" delay of 80 ms seems the most common, but we'll
811 * throw in 200 ms to be safe.
812 */
813 desc->delay.unprepare = 2000;
814 desc->delay.enable = 200;
815
816 panel->detected_panel = ERR_PTR(-EINVAL);
817 } else {
818 dev_info(dev, "Detected %s %s (%#06x)\n",
819 vend, panel->detected_panel->name, product_id);
820
821 /* Update the delay; everything else comes from EDID */
822 desc->delay = *panel->detected_panel->delay;
823 }
824
825 ret = 0;
826 exit:
827 pm_runtime_mark_last_busy(dev);
828 pm_runtime_put_autosuspend(dev);
829
830 return ret;
831 }
832
panel_edp_probe(struct device * dev,const struct panel_desc * desc,struct drm_dp_aux * aux)833 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc,
834 struct drm_dp_aux *aux)
835 {
836 struct panel_edp *panel;
837 struct display_timing dt;
838 struct device_node *ddc;
839 int err;
840
841 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
842 if (!panel)
843 return -ENOMEM;
844
845 panel->enabled = false;
846 panel->prepared_time = 0;
847 panel->desc = desc;
848 panel->aux = aux;
849
850 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");
851 if (!panel->no_hpd) {
852 err = panel_edp_get_hpd_gpio(dev, panel);
853 if (err)
854 return err;
855 }
856
857 panel->supply = devm_regulator_get(dev, "power");
858 if (IS_ERR(panel->supply))
859 return PTR_ERR(panel->supply);
860
861 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
862 GPIOD_OUT_LOW);
863 if (IS_ERR(panel->enable_gpio))
864 return dev_err_probe(dev, PTR_ERR(panel->enable_gpio),
865 "failed to request GPIO\n");
866
867 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
868 if (err) {
869 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
870 return err;
871 }
872
873 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
874 if (ddc) {
875 panel->ddc = of_find_i2c_adapter_by_node(ddc);
876 of_node_put(ddc);
877
878 if (!panel->ddc)
879 return -EPROBE_DEFER;
880 } else if (aux) {
881 panel->ddc = &aux->ddc;
882 }
883
884 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
885 panel_edp_parse_panel_timing_node(dev, panel, &dt);
886
887 dev_set_drvdata(dev, panel);
888
889 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);
890
891 err = drm_panel_of_backlight(&panel->base);
892 if (err)
893 goto err_finished_ddc_init;
894
895 /*
896 * We use runtime PM for prepare / unprepare since those power the panel
897 * on and off and those can be very slow operations. This is important
898 * to optimize powering the panel on briefly to read the EDID before
899 * fully enabling the panel.
900 */
901 pm_runtime_enable(dev);
902 pm_runtime_set_autosuspend_delay(dev, 1000);
903 pm_runtime_use_autosuspend(dev);
904
905 if (of_device_is_compatible(dev->of_node, "edp-panel")) {
906 err = generic_edp_panel_probe(dev, panel);
907 if (err) {
908 dev_err_probe(dev, err,
909 "Couldn't detect panel nor find a fallback\n");
910 goto err_finished_pm_runtime;
911 }
912 /* generic_edp_panel_probe() replaces desc in the panel */
913 desc = panel->desc;
914 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) {
915 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc);
916 }
917
918 if (!panel->base.backlight && panel->aux) {
919 pm_runtime_get_sync(dev);
920 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);
921 pm_runtime_mark_last_busy(dev);
922 pm_runtime_put_autosuspend(dev);
923 if (err)
924 goto err_finished_pm_runtime;
925 }
926
927 drm_panel_add(&panel->base);
928
929 return 0;
930
931 err_finished_pm_runtime:
932 pm_runtime_dont_use_autosuspend(dev);
933 pm_runtime_disable(dev);
934 err_finished_ddc_init:
935 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
936 put_device(&panel->ddc->dev);
937
938 return err;
939 }
940
panel_edp_remove(struct device * dev)941 static void panel_edp_remove(struct device *dev)
942 {
943 struct panel_edp *panel = dev_get_drvdata(dev);
944
945 drm_panel_remove(&panel->base);
946 drm_panel_disable(&panel->base);
947 drm_panel_unprepare(&panel->base);
948
949 pm_runtime_dont_use_autosuspend(dev);
950 pm_runtime_disable(dev);
951 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
952 put_device(&panel->ddc->dev);
953
954 kfree(panel->edid);
955 panel->edid = NULL;
956 }
957
panel_edp_shutdown(struct device * dev)958 static void panel_edp_shutdown(struct device *dev)
959 {
960 struct panel_edp *panel = dev_get_drvdata(dev);
961
962 drm_panel_disable(&panel->base);
963 drm_panel_unprepare(&panel->base);
964 }
965
966 static const struct display_timing auo_b101ean01_timing = {
967 .pixelclock = { 65300000, 72500000, 75000000 },
968 .hactive = { 1280, 1280, 1280 },
969 .hfront_porch = { 18, 119, 119 },
970 .hback_porch = { 21, 21, 21 },
971 .hsync_len = { 32, 32, 32 },
972 .vactive = { 800, 800, 800 },
973 .vfront_porch = { 4, 4, 4 },
974 .vback_porch = { 8, 8, 8 },
975 .vsync_len = { 18, 20, 20 },
976 };
977
978 static const struct panel_desc auo_b101ean01 = {
979 .timings = &auo_b101ean01_timing,
980 .num_timings = 1,
981 .bpc = 6,
982 .size = {
983 .width = 217,
984 .height = 136,
985 },
986 };
987
988 static const struct drm_display_mode auo_b116xak01_mode = {
989 .clock = 69300,
990 .hdisplay = 1366,
991 .hsync_start = 1366 + 48,
992 .hsync_end = 1366 + 48 + 32,
993 .htotal = 1366 + 48 + 32 + 10,
994 .vdisplay = 768,
995 .vsync_start = 768 + 4,
996 .vsync_end = 768 + 4 + 6,
997 .vtotal = 768 + 4 + 6 + 15,
998 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
999 };
1000
1001 static const struct panel_desc auo_b116xak01 = {
1002 .modes = &auo_b116xak01_mode,
1003 .num_modes = 1,
1004 .bpc = 6,
1005 .size = {
1006 .width = 256,
1007 .height = 144,
1008 },
1009 .delay = {
1010 .hpd_absent = 200,
1011 .unprepare = 500,
1012 .enable = 50,
1013 },
1014 };
1015
1016 static const struct drm_display_mode auo_b133han05_mode = {
1017 .clock = 142600,
1018 .hdisplay = 1920,
1019 .hsync_start = 1920 + 58,
1020 .hsync_end = 1920 + 58 + 42,
1021 .htotal = 1920 + 58 + 42 + 60,
1022 .vdisplay = 1080,
1023 .vsync_start = 1080 + 3,
1024 .vsync_end = 1080 + 3 + 5,
1025 .vtotal = 1080 + 3 + 5 + 54,
1026 };
1027
1028 static const struct panel_desc auo_b133han05 = {
1029 .modes = &auo_b133han05_mode,
1030 .num_modes = 1,
1031 .bpc = 8,
1032 .size = {
1033 .width = 293,
1034 .height = 165,
1035 },
1036 .delay = {
1037 .hpd_reliable = 100,
1038 .enable = 20,
1039 .unprepare = 50,
1040 },
1041 };
1042
1043 static const struct drm_display_mode auo_b133htn01_mode = {
1044 .clock = 150660,
1045 .hdisplay = 1920,
1046 .hsync_start = 1920 + 172,
1047 .hsync_end = 1920 + 172 + 80,
1048 .htotal = 1920 + 172 + 80 + 60,
1049 .vdisplay = 1080,
1050 .vsync_start = 1080 + 25,
1051 .vsync_end = 1080 + 25 + 10,
1052 .vtotal = 1080 + 25 + 10 + 10,
1053 };
1054
1055 static const struct panel_desc auo_b133htn01 = {
1056 .modes = &auo_b133htn01_mode,
1057 .num_modes = 1,
1058 .bpc = 6,
1059 .size = {
1060 .width = 293,
1061 .height = 165,
1062 },
1063 .delay = {
1064 .hpd_reliable = 105,
1065 .enable = 20,
1066 .unprepare = 50,
1067 },
1068 };
1069
1070 static const struct drm_display_mode auo_b133xtn01_mode = {
1071 .clock = 69500,
1072 .hdisplay = 1366,
1073 .hsync_start = 1366 + 48,
1074 .hsync_end = 1366 + 48 + 32,
1075 .htotal = 1366 + 48 + 32 + 20,
1076 .vdisplay = 768,
1077 .vsync_start = 768 + 3,
1078 .vsync_end = 768 + 3 + 6,
1079 .vtotal = 768 + 3 + 6 + 13,
1080 };
1081
1082 static const struct panel_desc auo_b133xtn01 = {
1083 .modes = &auo_b133xtn01_mode,
1084 .num_modes = 1,
1085 .bpc = 6,
1086 .size = {
1087 .width = 293,
1088 .height = 165,
1089 },
1090 };
1091
1092 static const struct drm_display_mode auo_b140han06_mode = {
1093 .clock = 141000,
1094 .hdisplay = 1920,
1095 .hsync_start = 1920 + 16,
1096 .hsync_end = 1920 + 16 + 16,
1097 .htotal = 1920 + 16 + 16 + 152,
1098 .vdisplay = 1080,
1099 .vsync_start = 1080 + 3,
1100 .vsync_end = 1080 + 3 + 14,
1101 .vtotal = 1080 + 3 + 14 + 19,
1102 };
1103
1104 static const struct panel_desc auo_b140han06 = {
1105 .modes = &auo_b140han06_mode,
1106 .num_modes = 1,
1107 .bpc = 8,
1108 .size = {
1109 .width = 309,
1110 .height = 174,
1111 },
1112 .delay = {
1113 .hpd_reliable = 100,
1114 .enable = 20,
1115 .unprepare = 50,
1116 },
1117 };
1118
1119 static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
1120 {
1121 .clock = 71900,
1122 .hdisplay = 1280,
1123 .hsync_start = 1280 + 48,
1124 .hsync_end = 1280 + 48 + 32,
1125 .htotal = 1280 + 48 + 32 + 80,
1126 .vdisplay = 800,
1127 .vsync_start = 800 + 3,
1128 .vsync_end = 800 + 3 + 5,
1129 .vtotal = 800 + 3 + 5 + 24,
1130 },
1131 {
1132 .clock = 57500,
1133 .hdisplay = 1280,
1134 .hsync_start = 1280 + 48,
1135 .hsync_end = 1280 + 48 + 32,
1136 .htotal = 1280 + 48 + 32 + 80,
1137 .vdisplay = 800,
1138 .vsync_start = 800 + 3,
1139 .vsync_end = 800 + 3 + 5,
1140 .vtotal = 800 + 3 + 5 + 24,
1141 },
1142 };
1143
1144 static const struct panel_desc boe_nv101wxmn51 = {
1145 .modes = boe_nv101wxmn51_modes,
1146 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
1147 .bpc = 8,
1148 .size = {
1149 .width = 217,
1150 .height = 136,
1151 },
1152 .delay = {
1153 /* TODO: should be hpd-absent and no-hpd should be set? */
1154 .hpd_reliable = 210,
1155 .enable = 50,
1156 .unprepare = 160,
1157 },
1158 };
1159
1160 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
1161 {
1162 .clock = 207800,
1163 .hdisplay = 2160,
1164 .hsync_start = 2160 + 48,
1165 .hsync_end = 2160 + 48 + 32,
1166 .htotal = 2160 + 48 + 32 + 100,
1167 .vdisplay = 1440,
1168 .vsync_start = 1440 + 3,
1169 .vsync_end = 1440 + 3 + 6,
1170 .vtotal = 1440 + 3 + 6 + 31,
1171 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1172 },
1173 {
1174 .clock = 138500,
1175 .hdisplay = 2160,
1176 .hsync_start = 2160 + 48,
1177 .hsync_end = 2160 + 48 + 32,
1178 .htotal = 2160 + 48 + 32 + 100,
1179 .vdisplay = 1440,
1180 .vsync_start = 1440 + 3,
1181 .vsync_end = 1440 + 3 + 6,
1182 .vtotal = 1440 + 3 + 6 + 31,
1183 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1184 },
1185 };
1186
1187 static const struct panel_desc boe_nv110wtm_n61 = {
1188 .modes = boe_nv110wtm_n61_modes,
1189 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
1190 .bpc = 8,
1191 .size = {
1192 .width = 233,
1193 .height = 155,
1194 },
1195 .delay = {
1196 .hpd_absent = 200,
1197 .prepare_to_enable = 80,
1198 .enable = 50,
1199 .unprepare = 500,
1200 },
1201 };
1202
1203 /* Also used for boe_nv133fhm_n62 */
1204 static const struct drm_display_mode boe_nv133fhm_n61_modes = {
1205 .clock = 147840,
1206 .hdisplay = 1920,
1207 .hsync_start = 1920 + 48,
1208 .hsync_end = 1920 + 48 + 32,
1209 .htotal = 1920 + 48 + 32 + 200,
1210 .vdisplay = 1080,
1211 .vsync_start = 1080 + 3,
1212 .vsync_end = 1080 + 3 + 6,
1213 .vtotal = 1080 + 3 + 6 + 31,
1214 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1215 };
1216
1217 /* Also used for boe_nv133fhm_n62 */
1218 static const struct panel_desc boe_nv133fhm_n61 = {
1219 .modes = &boe_nv133fhm_n61_modes,
1220 .num_modes = 1,
1221 .bpc = 6,
1222 .size = {
1223 .width = 294,
1224 .height = 165,
1225 },
1226 .delay = {
1227 /*
1228 * When power is first given to the panel there's a short
1229 * spike on the HPD line. It was explained that this spike
1230 * was until the TCON data download was complete. On
1231 * one system this was measured at 8 ms. We'll put 15 ms
1232 * in the prepare delay just to be safe. That means:
1233 * - If HPD isn't hooked up you still have 200 ms delay.
1234 * - If HPD is hooked up we won't try to look at it for the
1235 * first 15 ms.
1236 */
1237 .hpd_reliable = 15,
1238 .hpd_absent = 200,
1239
1240 .unprepare = 500,
1241 },
1242 };
1243
1244 static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
1245 {
1246 .clock = 148500,
1247 .hdisplay = 1920,
1248 .hsync_start = 1920 + 48,
1249 .hsync_end = 1920 + 48 + 32,
1250 .htotal = 2200,
1251 .vdisplay = 1080,
1252 .vsync_start = 1080 + 3,
1253 .vsync_end = 1080 + 3 + 5,
1254 .vtotal = 1125,
1255 },
1256 };
1257
1258 static const struct panel_desc boe_nv140fhmn49 = {
1259 .modes = boe_nv140fhmn49_modes,
1260 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
1261 .bpc = 6,
1262 .size = {
1263 .width = 309,
1264 .height = 174,
1265 },
1266 .delay = {
1267 /* TODO: should be hpd-absent and no-hpd should be set? */
1268 .hpd_reliable = 210,
1269 .enable = 50,
1270 .unprepare = 160,
1271 },
1272 };
1273
1274 static const struct drm_display_mode innolux_n116bca_ea1_mode = {
1275 .clock = 76420,
1276 .hdisplay = 1366,
1277 .hsync_start = 1366 + 136,
1278 .hsync_end = 1366 + 136 + 30,
1279 .htotal = 1366 + 136 + 30 + 60,
1280 .vdisplay = 768,
1281 .vsync_start = 768 + 8,
1282 .vsync_end = 768 + 8 + 12,
1283 .vtotal = 768 + 8 + 12 + 12,
1284 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1285 };
1286
1287 static const struct panel_desc innolux_n116bca_ea1 = {
1288 .modes = &innolux_n116bca_ea1_mode,
1289 .num_modes = 1,
1290 .bpc = 6,
1291 .size = {
1292 .width = 256,
1293 .height = 144,
1294 },
1295 .delay = {
1296 .hpd_absent = 200,
1297 .enable = 80,
1298 .disable = 50,
1299 .unprepare = 500,
1300 },
1301 };
1302
1303 /*
1304 * Datasheet specifies that at 60 Hz refresh rate:
1305 * - total horizontal time: { 1506, 1592, 1716 }
1306 * - total vertical time: { 788, 800, 868 }
1307 *
1308 * ...but doesn't go into exactly how that should be split into a front
1309 * porch, back porch, or sync length. For now we'll leave a single setting
1310 * here which allows a bit of tweaking of the pixel clock at the expense of
1311 * refresh rate.
1312 */
1313 static const struct display_timing innolux_n116bge_timing = {
1314 .pixelclock = { 72600000, 76420000, 80240000 },
1315 .hactive = { 1366, 1366, 1366 },
1316 .hfront_porch = { 136, 136, 136 },
1317 .hback_porch = { 60, 60, 60 },
1318 .hsync_len = { 30, 30, 30 },
1319 .vactive = { 768, 768, 768 },
1320 .vfront_porch = { 8, 8, 8 },
1321 .vback_porch = { 12, 12, 12 },
1322 .vsync_len = { 12, 12, 12 },
1323 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1324 };
1325
1326 static const struct panel_desc innolux_n116bge = {
1327 .timings = &innolux_n116bge_timing,
1328 .num_timings = 1,
1329 .bpc = 6,
1330 .size = {
1331 .width = 256,
1332 .height = 144,
1333 },
1334 };
1335
1336 static const struct drm_display_mode innolux_n125hce_gn1_mode = {
1337 .clock = 162000,
1338 .hdisplay = 1920,
1339 .hsync_start = 1920 + 40,
1340 .hsync_end = 1920 + 40 + 40,
1341 .htotal = 1920 + 40 + 40 + 80,
1342 .vdisplay = 1080,
1343 .vsync_start = 1080 + 4,
1344 .vsync_end = 1080 + 4 + 4,
1345 .vtotal = 1080 + 4 + 4 + 24,
1346 };
1347
1348 static const struct panel_desc innolux_n125hce_gn1 = {
1349 .modes = &innolux_n125hce_gn1_mode,
1350 .num_modes = 1,
1351 .bpc = 8,
1352 .size = {
1353 .width = 276,
1354 .height = 155,
1355 },
1356 };
1357
1358 static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
1359 .clock = 206016,
1360 .hdisplay = 2160,
1361 .hsync_start = 2160 + 48,
1362 .hsync_end = 2160 + 48 + 32,
1363 .htotal = 2160 + 48 + 32 + 80,
1364 .vdisplay = 1440,
1365 .vsync_start = 1440 + 3,
1366 .vsync_end = 1440 + 3 + 10,
1367 .vtotal = 1440 + 3 + 10 + 27,
1368 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1369 };
1370
1371 static const struct panel_desc innolux_p120zdg_bf1 = {
1372 .modes = &innolux_p120zdg_bf1_mode,
1373 .num_modes = 1,
1374 .bpc = 8,
1375 .size = {
1376 .width = 254,
1377 .height = 169,
1378 },
1379 .delay = {
1380 .hpd_absent = 200,
1381 .unprepare = 500,
1382 },
1383 };
1384
1385 static const struct drm_display_mode ivo_m133nwf4_r0_mode = {
1386 .clock = 138778,
1387 .hdisplay = 1920,
1388 .hsync_start = 1920 + 24,
1389 .hsync_end = 1920 + 24 + 48,
1390 .htotal = 1920 + 24 + 48 + 88,
1391 .vdisplay = 1080,
1392 .vsync_start = 1080 + 3,
1393 .vsync_end = 1080 + 3 + 12,
1394 .vtotal = 1080 + 3 + 12 + 17,
1395 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1396 };
1397
1398 static const struct panel_desc ivo_m133nwf4_r0 = {
1399 .modes = &ivo_m133nwf4_r0_mode,
1400 .num_modes = 1,
1401 .bpc = 8,
1402 .size = {
1403 .width = 294,
1404 .height = 165,
1405 },
1406 .delay = {
1407 .hpd_absent = 200,
1408 .unprepare = 500,
1409 },
1410 };
1411
1412 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
1413 .clock = 81000,
1414 .hdisplay = 1366,
1415 .hsync_start = 1366 + 40,
1416 .hsync_end = 1366 + 40 + 32,
1417 .htotal = 1366 + 40 + 32 + 62,
1418 .vdisplay = 768,
1419 .vsync_start = 768 + 5,
1420 .vsync_end = 768 + 5 + 5,
1421 .vtotal = 768 + 5 + 5 + 122,
1422 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1423 };
1424
1425 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
1426 .modes = &kingdisplay_kd116n21_30nv_a010_mode,
1427 .num_modes = 1,
1428 .bpc = 6,
1429 .size = {
1430 .width = 256,
1431 .height = 144,
1432 },
1433 .delay = {
1434 .hpd_absent = 200,
1435 },
1436 };
1437
1438 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
1439 .clock = 200000,
1440 .hdisplay = 1536,
1441 .hsync_start = 1536 + 12,
1442 .hsync_end = 1536 + 12 + 16,
1443 .htotal = 1536 + 12 + 16 + 48,
1444 .vdisplay = 2048,
1445 .vsync_start = 2048 + 8,
1446 .vsync_end = 2048 + 8 + 4,
1447 .vtotal = 2048 + 8 + 4 + 8,
1448 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1449 };
1450
1451 static const struct panel_desc lg_lp079qx1_sp0v = {
1452 .modes = &lg_lp079qx1_sp0v_mode,
1453 .num_modes = 1,
1454 .size = {
1455 .width = 129,
1456 .height = 171,
1457 },
1458 };
1459
1460 static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
1461 .clock = 205210,
1462 .hdisplay = 2048,
1463 .hsync_start = 2048 + 150,
1464 .hsync_end = 2048 + 150 + 5,
1465 .htotal = 2048 + 150 + 5 + 5,
1466 .vdisplay = 1536,
1467 .vsync_start = 1536 + 3,
1468 .vsync_end = 1536 + 3 + 1,
1469 .vtotal = 1536 + 3 + 1 + 9,
1470 };
1471
1472 static const struct panel_desc lg_lp097qx1_spa1 = {
1473 .modes = &lg_lp097qx1_spa1_mode,
1474 .num_modes = 1,
1475 .size = {
1476 .width = 208,
1477 .height = 147,
1478 },
1479 };
1480
1481 static const struct drm_display_mode lg_lp120up1_mode = {
1482 .clock = 162300,
1483 .hdisplay = 1920,
1484 .hsync_start = 1920 + 40,
1485 .hsync_end = 1920 + 40 + 40,
1486 .htotal = 1920 + 40 + 40 + 80,
1487 .vdisplay = 1280,
1488 .vsync_start = 1280 + 4,
1489 .vsync_end = 1280 + 4 + 4,
1490 .vtotal = 1280 + 4 + 4 + 12,
1491 };
1492
1493 static const struct panel_desc lg_lp120up1 = {
1494 .modes = &lg_lp120up1_mode,
1495 .num_modes = 1,
1496 .bpc = 8,
1497 .size = {
1498 .width = 267,
1499 .height = 183,
1500 },
1501 };
1502
1503 static const struct drm_display_mode lg_lp129qe_mode = {
1504 .clock = 285250,
1505 .hdisplay = 2560,
1506 .hsync_start = 2560 + 48,
1507 .hsync_end = 2560 + 48 + 32,
1508 .htotal = 2560 + 48 + 32 + 80,
1509 .vdisplay = 1700,
1510 .vsync_start = 1700 + 3,
1511 .vsync_end = 1700 + 3 + 10,
1512 .vtotal = 1700 + 3 + 10 + 36,
1513 };
1514
1515 static const struct panel_desc lg_lp129qe = {
1516 .modes = &lg_lp129qe_mode,
1517 .num_modes = 1,
1518 .bpc = 8,
1519 .size = {
1520 .width = 272,
1521 .height = 181,
1522 },
1523 };
1524
1525 static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
1526 {
1527 .clock = 138500,
1528 .hdisplay = 1920,
1529 .hsync_start = 1920 + 48,
1530 .hsync_end = 1920 + 48 + 32,
1531 .htotal = 1920 + 48 + 32 + 80,
1532 .vdisplay = 1080,
1533 .vsync_start = 1080 + 3,
1534 .vsync_end = 1080 + 3 + 5,
1535 .vtotal = 1080 + 3 + 5 + 23,
1536 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1537 }, {
1538 .clock = 110920,
1539 .hdisplay = 1920,
1540 .hsync_start = 1920 + 48,
1541 .hsync_end = 1920 + 48 + 32,
1542 .htotal = 1920 + 48 + 32 + 80,
1543 .vdisplay = 1080,
1544 .vsync_start = 1080 + 3,
1545 .vsync_end = 1080 + 3 + 5,
1546 .vtotal = 1080 + 3 + 5 + 23,
1547 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1548 }
1549 };
1550
1551 static const struct panel_desc neweast_wjfh116008a = {
1552 .modes = neweast_wjfh116008a_modes,
1553 .num_modes = 2,
1554 .bpc = 6,
1555 .size = {
1556 .width = 260,
1557 .height = 150,
1558 },
1559 .delay = {
1560 .hpd_reliable = 110,
1561 .enable = 20,
1562 .unprepare = 500,
1563 },
1564 };
1565
1566 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
1567 .clock = 271560,
1568 .hdisplay = 2560,
1569 .hsync_start = 2560 + 48,
1570 .hsync_end = 2560 + 48 + 32,
1571 .htotal = 2560 + 48 + 32 + 80,
1572 .vdisplay = 1600,
1573 .vsync_start = 1600 + 2,
1574 .vsync_end = 1600 + 2 + 5,
1575 .vtotal = 1600 + 2 + 5 + 57,
1576 };
1577
1578 static const struct panel_desc samsung_lsn122dl01_c01 = {
1579 .modes = &samsung_lsn122dl01_c01_mode,
1580 .num_modes = 1,
1581 .size = {
1582 .width = 263,
1583 .height = 164,
1584 },
1585 };
1586
1587 static const struct drm_display_mode samsung_ltn140at29_301_mode = {
1588 .clock = 76300,
1589 .hdisplay = 1366,
1590 .hsync_start = 1366 + 64,
1591 .hsync_end = 1366 + 64 + 48,
1592 .htotal = 1366 + 64 + 48 + 128,
1593 .vdisplay = 768,
1594 .vsync_start = 768 + 2,
1595 .vsync_end = 768 + 2 + 5,
1596 .vtotal = 768 + 2 + 5 + 17,
1597 };
1598
1599 static const struct panel_desc samsung_ltn140at29_301 = {
1600 .modes = &samsung_ltn140at29_301_mode,
1601 .num_modes = 1,
1602 .bpc = 6,
1603 .size = {
1604 .width = 320,
1605 .height = 187,
1606 },
1607 };
1608
1609 static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
1610 .clock = 168480,
1611 .hdisplay = 1920,
1612 .hsync_start = 1920 + 48,
1613 .hsync_end = 1920 + 48 + 32,
1614 .htotal = 1920 + 48 + 32 + 80,
1615 .vdisplay = 1280,
1616 .vsync_start = 1280 + 3,
1617 .vsync_end = 1280 + 3 + 10,
1618 .vtotal = 1280 + 3 + 10 + 57,
1619 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
1620 };
1621
1622 static const struct panel_desc sharp_ld_d5116z01b = {
1623 .modes = &sharp_ld_d5116z01b_mode,
1624 .num_modes = 1,
1625 .bpc = 8,
1626 .size = {
1627 .width = 260,
1628 .height = 120,
1629 },
1630 };
1631
1632 static const struct display_timing sharp_lq123p1jx31_timing = {
1633 .pixelclock = { 252750000, 252750000, 266604720 },
1634 .hactive = { 2400, 2400, 2400 },
1635 .hfront_porch = { 48, 48, 48 },
1636 .hback_porch = { 80, 80, 84 },
1637 .hsync_len = { 32, 32, 32 },
1638 .vactive = { 1600, 1600, 1600 },
1639 .vfront_porch = { 3, 3, 3 },
1640 .vback_porch = { 33, 33, 120 },
1641 .vsync_len = { 10, 10, 10 },
1642 .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW,
1643 };
1644
1645 static const struct panel_desc sharp_lq123p1jx31 = {
1646 .timings = &sharp_lq123p1jx31_timing,
1647 .num_timings = 1,
1648 .bpc = 8,
1649 .size = {
1650 .width = 259,
1651 .height = 173,
1652 },
1653 .delay = {
1654 .hpd_reliable = 110,
1655 .enable = 50,
1656 .unprepare = 550,
1657 },
1658 };
1659
1660 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = {
1661 {
1662 .clock = 346500,
1663 .hdisplay = 1920,
1664 .hsync_start = 1920 + 48,
1665 .hsync_end = 1920 + 48 + 32,
1666 .htotal = 1920 + 48 + 32 + 80,
1667 .vdisplay = 1080,
1668 .vsync_start = 1080 + 3,
1669 .vsync_end = 1080 + 3 + 5,
1670 .vtotal = 1080 + 3 + 5 + 69,
1671 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1672 }, {
1673 .clock = 144370,
1674 .hdisplay = 1920,
1675 .hsync_start = 1920 + 48,
1676 .hsync_end = 1920 + 48 + 32,
1677 .htotal = 1920 + 48 + 32 + 80,
1678 .vdisplay = 1080,
1679 .vsync_start = 1080 + 3,
1680 .vsync_end = 1080 + 3 + 5,
1681 .vtotal = 1080 + 3 + 5 + 69,
1682 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1683 },
1684 };
1685
1686 static const struct panel_desc sharp_lq140m1jw46 = {
1687 .modes = sharp_lq140m1jw46_mode,
1688 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode),
1689 .bpc = 8,
1690 .size = {
1691 .width = 309,
1692 .height = 174,
1693 },
1694 .delay = {
1695 .hpd_absent = 80,
1696 .enable = 50,
1697 .unprepare = 500,
1698 },
1699 };
1700
1701 static const struct drm_display_mode starry_kr122ea0sra_mode = {
1702 .clock = 147000,
1703 .hdisplay = 1920,
1704 .hsync_start = 1920 + 16,
1705 .hsync_end = 1920 + 16 + 16,
1706 .htotal = 1920 + 16 + 16 + 32,
1707 .vdisplay = 1200,
1708 .vsync_start = 1200 + 15,
1709 .vsync_end = 1200 + 15 + 2,
1710 .vtotal = 1200 + 15 + 2 + 18,
1711 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1712 };
1713
1714 static const struct panel_desc starry_kr122ea0sra = {
1715 .modes = &starry_kr122ea0sra_mode,
1716 .num_modes = 1,
1717 .size = {
1718 .width = 263,
1719 .height = 164,
1720 },
1721 .delay = {
1722 /* TODO: should be hpd-absent and no-hpd should be set? */
1723 .hpd_reliable = 10 + 200,
1724 .enable = 50,
1725 .unprepare = 10 + 500,
1726 },
1727 };
1728
1729 static const struct of_device_id platform_of_match[] = {
1730 {
1731 /* Must be first */
1732 .compatible = "edp-panel",
1733 }, {
1734 .compatible = "auo,b101ean01",
1735 .data = &auo_b101ean01,
1736 }, {
1737 .compatible = "auo,b116xa01",
1738 .data = &auo_b116xak01,
1739 }, {
1740 .compatible = "auo,b133han05",
1741 .data = &auo_b133han05,
1742 }, {
1743 .compatible = "auo,b133htn01",
1744 .data = &auo_b133htn01,
1745 }, {
1746 .compatible = "auo,b133xtn01",
1747 .data = &auo_b133xtn01,
1748 }, {
1749 .compatible = "auo,b140han06",
1750 .data = &auo_b140han06,
1751 }, {
1752 .compatible = "boe,nv101wxmn51",
1753 .data = &boe_nv101wxmn51,
1754 }, {
1755 .compatible = "boe,nv110wtm-n61",
1756 .data = &boe_nv110wtm_n61,
1757 }, {
1758 .compatible = "boe,nv133fhm-n61",
1759 .data = &boe_nv133fhm_n61,
1760 }, {
1761 .compatible = "boe,nv133fhm-n62",
1762 .data = &boe_nv133fhm_n61,
1763 }, {
1764 .compatible = "boe,nv140fhmn49",
1765 .data = &boe_nv140fhmn49,
1766 }, {
1767 .compatible = "innolux,n116bca-ea1",
1768 .data = &innolux_n116bca_ea1,
1769 }, {
1770 .compatible = "innolux,n116bge",
1771 .data = &innolux_n116bge,
1772 }, {
1773 .compatible = "innolux,n125hce-gn1",
1774 .data = &innolux_n125hce_gn1,
1775 }, {
1776 .compatible = "innolux,p120zdg-bf1",
1777 .data = &innolux_p120zdg_bf1,
1778 }, {
1779 .compatible = "ivo,m133nwf4-r0",
1780 .data = &ivo_m133nwf4_r0,
1781 }, {
1782 .compatible = "kingdisplay,kd116n21-30nv-a010",
1783 .data = &kingdisplay_kd116n21_30nv_a010,
1784 }, {
1785 .compatible = "lg,lp079qx1-sp0v",
1786 .data = &lg_lp079qx1_sp0v,
1787 }, {
1788 .compatible = "lg,lp097qx1-spa1",
1789 .data = &lg_lp097qx1_spa1,
1790 }, {
1791 .compatible = "lg,lp120up1",
1792 .data = &lg_lp120up1,
1793 }, {
1794 .compatible = "lg,lp129qe",
1795 .data = &lg_lp129qe,
1796 }, {
1797 .compatible = "neweast,wjfh116008a",
1798 .data = &neweast_wjfh116008a,
1799 }, {
1800 .compatible = "samsung,lsn122dl01-c01",
1801 .data = &samsung_lsn122dl01_c01,
1802 }, {
1803 .compatible = "samsung,ltn140at29-301",
1804 .data = &samsung_ltn140at29_301,
1805 }, {
1806 .compatible = "sharp,ld-d5116z01b",
1807 .data = &sharp_ld_d5116z01b,
1808 }, {
1809 .compatible = "sharp,lq123p1jx31",
1810 .data = &sharp_lq123p1jx31,
1811 }, {
1812 .compatible = "sharp,lq140m1jw46",
1813 .data = &sharp_lq140m1jw46,
1814 }, {
1815 .compatible = "starry,kr122ea0sra",
1816 .data = &starry_kr122ea0sra,
1817 }, {
1818 /* sentinel */
1819 }
1820 };
1821 MODULE_DEVICE_TABLE(of, platform_of_match);
1822
1823 static const struct panel_delay delay_200_500_p2e80 = {
1824 .hpd_absent = 200,
1825 .unprepare = 500,
1826 .prepare_to_enable = 80,
1827 };
1828
1829 static const struct panel_delay delay_200_500_p2e100 = {
1830 .hpd_absent = 200,
1831 .unprepare = 500,
1832 .prepare_to_enable = 100,
1833 };
1834
1835 static const struct panel_delay delay_200_500_e50 = {
1836 .hpd_absent = 200,
1837 .unprepare = 500,
1838 .enable = 50,
1839 };
1840
1841 static const struct panel_delay delay_200_500_e80_d50 = {
1842 .hpd_absent = 200,
1843 .unprepare = 500,
1844 .enable = 80,
1845 .disable = 50,
1846 };
1847
1848 static const struct panel_delay delay_100_500_e200 = {
1849 .hpd_absent = 100,
1850 .unprepare = 500,
1851 .enable = 200,
1852 };
1853
1854 static const struct panel_delay delay_200_500_e200 = {
1855 .hpd_absent = 200,
1856 .unprepare = 500,
1857 .enable = 200,
1858 };
1859
1860 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
1861 { \
1862 .name = _name, \
1863 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1864 product_id), \
1865 .delay = _delay \
1866 }
1867
1868 #define EDP_PANEL_ENTRY2(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name, _mode) \
1869 { \
1870 .name = _name, \
1871 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1872 product_id), \
1873 .delay = _delay, \
1874 .override_edid_mode = _mode \
1875 }
1876
1877 /*
1878 * This table is used to figure out power sequencing delays for panels that
1879 * are detected by EDID. Entries here may point to entries in the
1880 * platform_of_match table (if a panel is listed in both places).
1881 *
1882 * Sort first by vendor, then by product ID.
1883 */
1884 static const struct edp_panel_entry edp_panels[] = {
1885 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
1886 EDP_PANEL_ENTRY('A', 'U', 'O', 0x145c, &delay_200_500_e50, "B116XAB01.4"),
1887 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
1888 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1ea5, &delay_200_500_e50, "B116XAK01.6"),
1889 EDP_PANEL_ENTRY('A', 'U', 'O', 0x235c, &delay_200_500_e50, "B116XTN02.3"),
1890 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01.0"),
1891 EDP_PANEL_ENTRY('A', 'U', 'O', 0x582d, &delay_200_500_e50, "B133UAN01.0"),
1892 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
1893 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
1894
1895 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
1896 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
1897 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
1898 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09c3, &delay_200_500_e50, "NT116WHM-N21,836X2"),
1899 EDP_PANEL_ENTRY('B', 'O', 'E', 0x094b, &delay_200_500_e50, "NT116WHM-N21"),
1900 EDP_PANEL_ENTRY('B', 'O', 'E', 0x095f, &delay_200_500_e50, "NE135FBM-N41 v8.1"),
1901 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0979, &delay_200_500_e50, "NV116WHM-N49 V8.0"),
1902 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"),
1903 EDP_PANEL_ENTRY('B', 'O', 'E', 0x09dd, &delay_200_500_e50, "NT116WHM-N21"),
1904 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
1905 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
1906
1907 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1139, &delay_200_500_e80_d50, "N116BGE-EA2"),
1908 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
1909 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1152, &delay_200_500_e80_d50, "N116BCN-EA1"),
1910 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1153, &delay_200_500_e80_d50, "N116BGE-EA2"),
1911 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1154, &delay_200_500_e80_d50, "N116BCA-EA2"),
1912 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
1913 EDP_PANEL_ENTRY('C', 'M', 'N', 0x14d4, &delay_200_500_e80_d50, "N140HCA-EAC"),
1914
1915 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
1916 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854a, &delay_200_500_p2e100, "M133NW4J"),
1917 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "R133NW4K-R0"),
1918
1919 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
1920 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
1921
1922 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
1923 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"),
1924 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
1925
1926 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
1927
1928 { /* sentinal */ }
1929 };
1930
find_edp_panel(u32 panel_id)1931 static const struct edp_panel_entry *find_edp_panel(u32 panel_id)
1932 {
1933 const struct edp_panel_entry *panel;
1934
1935 if (!panel_id)
1936 return NULL;
1937
1938 for (panel = edp_panels; panel->panel_id; panel++)
1939 if (panel->panel_id == panel_id)
1940 return panel;
1941
1942 return NULL;
1943 }
1944
panel_edp_platform_probe(struct platform_device * pdev)1945 static int panel_edp_platform_probe(struct platform_device *pdev)
1946 {
1947 const struct of_device_id *id;
1948
1949 /* Skip one since "edp-panel" is only supported on DP AUX bus */
1950 id = of_match_node(platform_of_match + 1, pdev->dev.of_node);
1951 if (!id)
1952 return -ENODEV;
1953
1954 return panel_edp_probe(&pdev->dev, id->data, NULL);
1955 }
1956
panel_edp_platform_remove(struct platform_device * pdev)1957 static void panel_edp_platform_remove(struct platform_device *pdev)
1958 {
1959 panel_edp_remove(&pdev->dev);
1960 }
1961
panel_edp_platform_shutdown(struct platform_device * pdev)1962 static void panel_edp_platform_shutdown(struct platform_device *pdev)
1963 {
1964 panel_edp_shutdown(&pdev->dev);
1965 }
1966
1967 static const struct dev_pm_ops panel_edp_pm_ops = {
1968 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
1969 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1970 pm_runtime_force_resume)
1971 };
1972
1973 static struct platform_driver panel_edp_platform_driver = {
1974 .driver = {
1975 .name = "panel-edp",
1976 .of_match_table = platform_of_match,
1977 .pm = &panel_edp_pm_ops,
1978 },
1979 .probe = panel_edp_platform_probe,
1980 .remove_new = panel_edp_platform_remove,
1981 .shutdown = panel_edp_platform_shutdown,
1982 };
1983
panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device * aux_ep)1984 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
1985 {
1986 const struct of_device_id *id;
1987
1988 id = of_match_node(platform_of_match, aux_ep->dev.of_node);
1989 if (!id)
1990 return -ENODEV;
1991
1992 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux);
1993 }
1994
panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device * aux_ep)1995 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
1996 {
1997 panel_edp_remove(&aux_ep->dev);
1998 }
1999
panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device * aux_ep)2000 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
2001 {
2002 panel_edp_shutdown(&aux_ep->dev);
2003 }
2004
2005 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
2006 .driver = {
2007 .name = "panel-simple-dp-aux",
2008 .of_match_table = platform_of_match, /* Same as platform one! */
2009 .pm = &panel_edp_pm_ops,
2010 },
2011 .probe = panel_edp_dp_aux_ep_probe,
2012 .remove = panel_edp_dp_aux_ep_remove,
2013 .shutdown = panel_edp_dp_aux_ep_shutdown,
2014 };
2015
panel_edp_init(void)2016 static int __init panel_edp_init(void)
2017 {
2018 int err;
2019
2020 err = platform_driver_register(&panel_edp_platform_driver);
2021 if (err < 0)
2022 return err;
2023
2024 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
2025 if (err < 0)
2026 goto err_did_platform_register;
2027
2028 return 0;
2029
2030 err_did_platform_register:
2031 platform_driver_unregister(&panel_edp_platform_driver);
2032
2033 return err;
2034 }
2035 module_init(panel_edp_init);
2036
panel_edp_exit(void)2037 static void __exit panel_edp_exit(void)
2038 {
2039 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver);
2040 platform_driver_unregister(&panel_edp_platform_driver);
2041 }
2042 module_exit(panel_edp_exit);
2043
2044 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
2045 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
2046 MODULE_LICENSE("GPL and additional rights");
2047