2 * Copyright (C) 2013, NVIDIA Corporation. All rights reserved.
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:
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
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.
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>
34 #include <video/display_timing.h>
35 #include <video/of_display_timing.h>
36 #include <video/videomode.h>
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>
46 * struct panel_delay - Describes delays for a simple panel.
50 * @hpd_reliable: Time for HPD to be reliable
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.
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.
61 unsigned int hpd_reliable;
64 * @hpd_absent: Time to wait if HPD isn't hooked up.
66 * Add this to the prepare delay if we know Hot Plug Detect isn't used.
68 * This is T3-max on eDP timing diagrams or the delay from power on
69 * until HPD is guaranteed to be asserted.
71 unsigned int hpd_absent;
74 * @prepare_to_enable: Time between prepare and enable.
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.
81 * If a fixed enable delay is also specified, we'll start
82 * counting before delaying for the fixed delay.
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
93 * // do fixed prepare delay
94 * // wait for HPD GPIO if applicable
95 * // start counting for prepare_to_enable
98 * // do fixed enable delay
99 * // enforce prepare_to_enable min time
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.
105 unsigned int prepare_to_enable;
108 * @enable: Time for the panel to display a valid frame.
110 * The time (in milliseconds) that it takes for the panel to
111 * display the first valid frame after starting to receive
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.
121 * @disable: Time for the panel to turn the display off.
123 * The time (in milliseconds) that it takes for the panel to
124 * turn the display off (no content is visible).
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.
129 unsigned int disable;
132 * @unprepare: Time to power down completely.
134 * The time (in milliseconds) that it takes for the panel
135 * to power itself down completely.
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.
142 * This is T12-min on eDP timing diagrams.
144 unsigned int unprepare;
148 * struct panel_desc - Describes a simple panel.
152 * @modes: Pointer to array of fixed modes appropriate for this panel.
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.
158 const struct drm_display_mode *modes;
160 /** @num_modes: Number of elements in modes array. */
161 unsigned int num_modes;
164 * @timings: Pointer to array of display timings
166 * NOTE: cannot be used with "modes" and also these will be used to
167 * validate a device tree override if one is present.
169 const struct display_timing *timings;
171 /** @num_timings: Number of elements in timings array. */
172 unsigned int num_timings;
174 /** @bpc: Bits per color. */
177 /** @size: Structure containing the physical size of this panel. */
180 * @size.width: Width (in mm) of the active display area.
185 * @size.height: Height (in mm) of the active display area.
190 /** @delay: Structure containing various delay values for this panel. */
191 struct panel_delay delay;
195 * struct edp_panel_entry - Maps panel ID to delay / panel name.
197 struct edp_panel_entry {
198 /** @panel_id: 32-bit ID for panel, encoded with drm_edid_encode_panel_id(). */
201 /** @delay: The power sequencing delays needed for this panel. */
202 const struct panel_delay *delay;
204 /** @name: Name of this panel (for printing to logs). */
209 struct drm_panel base;
215 ktime_t prepared_time;
216 ktime_t unprepared_time;
218 const struct panel_desc *desc;
220 struct regulator *supply;
221 struct i2c_adapter *ddc;
222 struct drm_dp_aux *aux;
224 struct gpio_desc *enable_gpio;
225 struct gpio_desc *hpd_gpio;
227 const struct edp_panel_entry *detected_panel;
231 struct drm_display_mode override_mode;
233 enum drm_panel_orientation orientation;
236 static inline struct panel_edp *to_panel_edp(struct drm_panel *panel)
238 return container_of(panel, struct panel_edp, base);
241 static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel,
242 struct drm_connector *connector)
244 struct drm_display_mode *mode;
245 unsigned int i, num = 0;
247 for (i = 0; i < panel->desc->num_timings; i++) {
248 const struct display_timing *dt = &panel->desc->timings[i];
251 videomode_from_timing(dt, &vm);
252 mode = drm_mode_create(connector->dev);
254 dev_err(panel->base.dev, "failed to add mode %ux%u\n",
255 dt->hactive.typ, dt->vactive.typ);
259 drm_display_mode_from_videomode(&vm, mode);
261 mode->type |= DRM_MODE_TYPE_DRIVER;
263 if (panel->desc->num_timings == 1)
264 mode->type |= DRM_MODE_TYPE_PREFERRED;
266 drm_mode_probed_add(connector, mode);
273 static unsigned int panel_edp_get_display_modes(struct panel_edp *panel,
274 struct drm_connector *connector)
276 struct drm_display_mode *mode;
277 unsigned int i, num = 0;
279 for (i = 0; i < panel->desc->num_modes; i++) {
280 const struct drm_display_mode *m = &panel->desc->modes[i];
282 mode = drm_mode_duplicate(connector->dev, m);
284 dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n",
285 m->hdisplay, m->vdisplay,
286 drm_mode_vrefresh(m));
290 mode->type |= DRM_MODE_TYPE_DRIVER;
292 if (panel->desc->num_modes == 1)
293 mode->type |= DRM_MODE_TYPE_PREFERRED;
295 drm_mode_set_name(mode);
297 drm_mode_probed_add(connector, mode);
304 static int panel_edp_get_non_edid_modes(struct panel_edp *panel,
305 struct drm_connector *connector)
307 struct drm_display_mode *mode;
308 bool has_override = panel->override_mode.type;
309 unsigned int num = 0;
315 mode = drm_mode_duplicate(connector->dev,
316 &panel->override_mode);
318 drm_mode_probed_add(connector, mode);
321 dev_err(panel->base.dev, "failed to add override mode\n");
325 /* Only add timings if override was not there or failed to validate */
326 if (num == 0 && panel->desc->num_timings)
327 num = panel_edp_get_timings_modes(panel, connector);
330 * Only add fixed modes if timings/override added no mode.
332 * We should only ever have either the display timings specified
333 * or a fixed mode. Anything else is rather bogus.
335 WARN_ON(panel->desc->num_timings && panel->desc->num_modes);
337 num = panel_edp_get_display_modes(panel, connector);
339 connector->display_info.bpc = panel->desc->bpc;
340 connector->display_info.width_mm = panel->desc->size.width;
341 connector->display_info.height_mm = panel->desc->size.height;
346 static void panel_edp_wait(ktime_t start_ktime, unsigned int min_ms)
348 ktime_t now_ktime, min_ktime;
353 min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms));
354 now_ktime = ktime_get();
356 if (ktime_before(now_ktime, min_ktime))
357 msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
360 static int panel_edp_disable(struct drm_panel *panel)
362 struct panel_edp *p = to_panel_edp(panel);
367 if (p->desc->delay.disable)
368 msleep(p->desc->delay.disable);
375 static int panel_edp_suspend(struct device *dev)
377 struct panel_edp *p = dev_get_drvdata(dev);
379 gpiod_set_value_cansleep(p->enable_gpio, 0);
380 regulator_disable(p->supply);
381 p->unprepared_time = ktime_get();
386 static int panel_edp_unprepare(struct drm_panel *panel)
388 struct panel_edp *p = to_panel_edp(panel);
391 /* Unpreparing when already unprepared is a no-op */
395 pm_runtime_mark_last_busy(panel->dev);
396 ret = pm_runtime_put_autosuspend(panel->dev);
404 static int panel_edp_get_hpd_gpio(struct device *dev, struct panel_edp *p)
408 p->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);
409 if (IS_ERR(p->hpd_gpio)) {
410 err = PTR_ERR(p->hpd_gpio);
412 if (err != -EPROBE_DEFER)
413 dev_err(dev, "failed to get 'hpd' GPIO: %d\n", err);
421 static bool panel_edp_can_read_hpd(struct panel_edp *p)
423 return !p->no_hpd && (p->hpd_gpio || (p->aux && p->aux->wait_hpd_asserted));
426 static int panel_edp_prepare_once(struct panel_edp *p)
428 struct device *dev = p->base.dev;
432 unsigned long hpd_wait_us;
434 panel_edp_wait(p->unprepared_time, p->desc->delay.unprepare);
436 err = regulator_enable(p->supply);
438 dev_err(dev, "failed to enable supply: %d\n", err);
442 gpiod_set_value_cansleep(p->enable_gpio, 1);
444 delay = p->desc->delay.hpd_reliable;
446 delay = max(delay, p->desc->delay.hpd_absent);
450 if (panel_edp_can_read_hpd(p)) {
451 if (p->desc->delay.hpd_absent)
452 hpd_wait_us = p->desc->delay.hpd_absent * 1000UL;
454 hpd_wait_us = 2000000;
457 err = readx_poll_timeout(gpiod_get_value_cansleep,
458 p->hpd_gpio, hpd_asserted,
459 hpd_asserted, 1000, hpd_wait_us);
460 if (hpd_asserted < 0)
463 err = p->aux->wait_hpd_asserted(p->aux, hpd_wait_us);
467 if (err != -ETIMEDOUT)
469 "error waiting for hpd GPIO: %d\n", err);
474 p->prepared_time = ktime_get();
479 gpiod_set_value_cansleep(p->enable_gpio, 0);
480 regulator_disable(p->supply);
481 p->unprepared_time = ktime_get();
487 * Some panels simply don't always come up and need to be power cycled to
488 * work properly. We'll allow for a handful of retries.
490 #define MAX_PANEL_PREPARE_TRIES 5
492 static int panel_edp_resume(struct device *dev)
494 struct panel_edp *p = dev_get_drvdata(dev);
498 for (try = 0; try < MAX_PANEL_PREPARE_TRIES; try++) {
499 ret = panel_edp_prepare_once(p);
500 if (ret != -ETIMEDOUT)
504 if (ret == -ETIMEDOUT)
505 dev_err(dev, "Prepare timeout after %d tries\n", try);
507 dev_warn(dev, "Prepare needed %d retries\n", try);
512 static int panel_edp_prepare(struct drm_panel *panel)
514 struct panel_edp *p = to_panel_edp(panel);
517 /* Preparing when already prepared is a no-op */
521 ret = pm_runtime_get_sync(panel->dev);
523 pm_runtime_put_autosuspend(panel->dev);
532 static int panel_edp_enable(struct drm_panel *panel)
534 struct panel_edp *p = to_panel_edp(panel);
540 delay = p->desc->delay.enable;
543 * If there is a "prepare_to_enable" delay then that's supposed to be
544 * the delay from HPD going high until we can turn the backlight on.
545 * However, we can only count this if HPD is readable by the panel
548 * If we aren't handling the HPD pin ourselves then the best we
549 * can do is assume that HPD went high immediately before we were
550 * called (and link training took zero time). Note that "no-hpd"
551 * actually counts as handling HPD ourselves since we're doing the
552 * worst case delay (in prepare) ourselves.
554 * NOTE: if we ever end up in this "if" statement then we're
555 * guaranteed that the panel_edp_wait() call below will do no delay.
556 * It already handles that case, though, so we don't need any special
559 if (p->desc->delay.prepare_to_enable &&
560 !panel_edp_can_read_hpd(p) && !p->no_hpd)
561 delay = max(delay, p->desc->delay.prepare_to_enable);
566 panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
573 static int panel_edp_get_modes(struct drm_panel *panel,
574 struct drm_connector *connector)
576 struct panel_edp *p = to_panel_edp(panel);
579 /* probe EDID if a DDC bus is available */
581 pm_runtime_get_sync(panel->dev);
584 p->edid = drm_get_edid(connector, p->ddc);
587 num += drm_add_edid_modes(connector, p->edid);
589 pm_runtime_mark_last_busy(panel->dev);
590 pm_runtime_put_autosuspend(panel->dev);
594 * Add hard-coded panel modes. Don't call this if there are no timings
595 * and no modes (the generic edp-panel case) because it will clobber
596 * the display_info that was already set by drm_add_edid_modes().
598 if (p->desc->num_timings || p->desc->num_modes)
599 num += panel_edp_get_non_edid_modes(p, connector);
601 dev_warn(p->base.dev, "No display modes\n");
604 * TODO: Remove once all drm drivers call
605 * drm_connector_set_orientation_from_panel()
607 drm_connector_set_panel_orientation(connector, p->orientation);
612 static int panel_edp_get_timings(struct drm_panel *panel,
613 unsigned int num_timings,
614 struct display_timing *timings)
616 struct panel_edp *p = to_panel_edp(panel);
619 if (p->desc->num_timings < num_timings)
620 num_timings = p->desc->num_timings;
623 for (i = 0; i < num_timings; i++)
624 timings[i] = p->desc->timings[i];
626 return p->desc->num_timings;
629 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)
631 struct panel_edp *p = to_panel_edp(panel);
633 return p->orientation;
636 static int detected_panel_show(struct seq_file *s, void *data)
638 struct drm_panel *panel = s->private;
639 struct panel_edp *p = to_panel_edp(panel);
641 if (IS_ERR(p->detected_panel))
642 seq_puts(s, "UNKNOWN\n");
643 else if (!p->detected_panel)
644 seq_puts(s, "HARDCODED\n");
646 seq_printf(s, "%s\n", p->detected_panel->name);
651 DEFINE_SHOW_ATTRIBUTE(detected_panel);
653 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)
655 debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);
658 static const struct drm_panel_funcs panel_edp_funcs = {
659 .disable = panel_edp_disable,
660 .unprepare = panel_edp_unprepare,
661 .prepare = panel_edp_prepare,
662 .enable = panel_edp_enable,
663 .get_modes = panel_edp_get_modes,
664 .get_orientation = panel_edp_get_orientation,
665 .get_timings = panel_edp_get_timings,
666 .debugfs_init = panel_edp_debugfs_init,
669 #define PANEL_EDP_BOUNDS_CHECK(to_check, bounds, field) \
670 (to_check->field.typ >= bounds->field.min && \
671 to_check->field.typ <= bounds->field.max)
672 static void panel_edp_parse_panel_timing_node(struct device *dev,
673 struct panel_edp *panel,
674 const struct display_timing *ot)
676 const struct panel_desc *desc = panel->desc;
680 if (WARN_ON(desc->num_modes)) {
681 dev_err(dev, "Reject override mode: panel has a fixed mode\n");
684 if (WARN_ON(!desc->num_timings)) {
685 dev_err(dev, "Reject override mode: no timings specified\n");
689 for (i = 0; i < panel->desc->num_timings; i++) {
690 const struct display_timing *dt = &panel->desc->timings[i];
692 if (!PANEL_EDP_BOUNDS_CHECK(ot, dt, hactive) ||
693 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hfront_porch) ||
694 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hback_porch) ||
695 !PANEL_EDP_BOUNDS_CHECK(ot, dt, hsync_len) ||
696 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vactive) ||
697 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vfront_porch) ||
698 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vback_porch) ||
699 !PANEL_EDP_BOUNDS_CHECK(ot, dt, vsync_len))
702 if (ot->flags != dt->flags)
705 videomode_from_timing(ot, &vm);
706 drm_display_mode_from_videomode(&vm, &panel->override_mode);
707 panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
708 DRM_MODE_TYPE_PREFERRED;
712 if (WARN_ON(!panel->override_mode.type))
713 dev_err(dev, "Reject override mode: No display_timing found\n");
716 static const struct edp_panel_entry *find_edp_panel(u32 panel_id);
718 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)
720 struct panel_desc *desc;
728 desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
734 * Read the dts properties for the initial probe. These are used by
735 * the runtime resume code which will get called by the
736 * pm_runtime_get_sync() call below.
738 of_property_read_u32(dev->of_node, "hpd-reliable-delay-ms", &reliable_ms);
739 desc->delay.hpd_reliable = reliable_ms;
740 of_property_read_u32(dev->of_node, "hpd-absent-delay-ms", &absent_ms);
741 desc->delay.hpd_absent = absent_ms;
743 /* Power the panel on so we can read the EDID */
744 ret = pm_runtime_get_sync(dev);
746 dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret);
750 panel_id = drm_edid_get_panel_id(panel->ddc);
752 dev_err(dev, "Couldn't identify panel via EDID\n");
756 drm_edid_decode_panel_id(panel_id, vend, &product_id);
758 panel->detected_panel = find_edp_panel(panel_id);
761 * We're using non-optimized timings and want it really obvious that
762 * someone needs to add an entry to the table, so we'll do a WARN_ON
765 if (WARN_ON(!panel->detected_panel)) {
767 "Unknown panel %s %#06x, using conservative timings\n",
771 * It's highly likely that the panel will work if we use very
772 * conservative timings, so let's do that. We already know that
773 * the HPD-related delays must have worked since we got this
774 * far, so we really just need the "unprepare" / "enable"
775 * delays. We don't need "prepare_to_enable" since that
776 * overlaps the "enable" delay anyway.
778 * Nearly all panels have a "unprepare" delay of 500 ms though
779 * there are a few with 1000. Let's stick 2000 in just to be
780 * super conservative.
782 * An "enable" delay of 80 ms seems the most common, but we'll
783 * throw in 200 ms to be safe.
785 desc->delay.unprepare = 2000;
786 desc->delay.enable = 200;
788 panel->detected_panel = ERR_PTR(-EINVAL);
790 dev_info(dev, "Detected %s %s (%#06x)\n",
791 vend, panel->detected_panel->name, product_id);
793 /* Update the delay; everything else comes from EDID */
794 desc->delay = *panel->detected_panel->delay;
799 pm_runtime_mark_last_busy(dev);
800 pm_runtime_put_autosuspend(dev);
805 static int panel_edp_probe(struct device *dev, const struct panel_desc *desc,
806 struct drm_dp_aux *aux)
808 struct panel_edp *panel;
809 struct display_timing dt;
810 struct device_node *ddc;
813 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
817 panel->enabled = false;
818 panel->prepared_time = 0;
822 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");
823 if (!panel->no_hpd) {
824 err = panel_edp_get_hpd_gpio(dev, panel);
829 panel->supply = devm_regulator_get(dev, "power");
830 if (IS_ERR(panel->supply))
831 return PTR_ERR(panel->supply);
833 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
835 if (IS_ERR(panel->enable_gpio)) {
836 err = PTR_ERR(panel->enable_gpio);
837 if (err != -EPROBE_DEFER)
838 dev_err(dev, "failed to request GPIO: %d\n", err);
842 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
844 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
848 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
850 panel->ddc = of_find_i2c_adapter_by_node(ddc);
854 return -EPROBE_DEFER;
856 panel->ddc = &aux->ddc;
859 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
860 panel_edp_parse_panel_timing_node(dev, panel, &dt);
862 dev_set_drvdata(dev, panel);
864 drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);
866 err = drm_panel_of_backlight(&panel->base);
868 goto err_finished_ddc_init;
871 * We use runtime PM for prepare / unprepare since those power the panel
872 * on and off and those can be very slow operations. This is important
873 * to optimize powering the panel on briefly to read the EDID before
874 * fully enabling the panel.
876 pm_runtime_enable(dev);
877 pm_runtime_set_autosuspend_delay(dev, 1000);
878 pm_runtime_use_autosuspend(dev);
880 if (of_device_is_compatible(dev->of_node, "edp-panel")) {
881 err = generic_edp_panel_probe(dev, panel);
883 dev_err_probe(dev, err,
884 "Couldn't detect panel nor find a fallback\n");
885 goto err_finished_pm_runtime;
887 /* generic_edp_panel_probe() replaces desc in the panel */
889 } else if (desc->bpc != 6 && desc->bpc != 8 && desc->bpc != 10) {
890 dev_warn(dev, "Expected bpc in {6,8,10} but got: %u\n", desc->bpc);
893 if (!panel->base.backlight && panel->aux) {
894 pm_runtime_get_sync(dev);
895 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);
896 pm_runtime_mark_last_busy(dev);
897 pm_runtime_put_autosuspend(dev);
899 goto err_finished_pm_runtime;
902 drm_panel_add(&panel->base);
906 err_finished_pm_runtime:
907 pm_runtime_dont_use_autosuspend(dev);
908 pm_runtime_disable(dev);
909 err_finished_ddc_init:
910 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
911 put_device(&panel->ddc->dev);
916 static int panel_edp_remove(struct device *dev)
918 struct panel_edp *panel = dev_get_drvdata(dev);
920 drm_panel_remove(&panel->base);
921 drm_panel_disable(&panel->base);
922 drm_panel_unprepare(&panel->base);
924 pm_runtime_dont_use_autosuspend(dev);
925 pm_runtime_disable(dev);
926 if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))
927 put_device(&panel->ddc->dev);
935 static void panel_edp_shutdown(struct device *dev)
937 struct panel_edp *panel = dev_get_drvdata(dev);
939 drm_panel_disable(&panel->base);
940 drm_panel_unprepare(&panel->base);
943 static const struct display_timing auo_b101ean01_timing = {
944 .pixelclock = { 65300000, 72500000, 75000000 },
945 .hactive = { 1280, 1280, 1280 },
946 .hfront_porch = { 18, 119, 119 },
947 .hback_porch = { 21, 21, 21 },
948 .hsync_len = { 32, 32, 32 },
949 .vactive = { 800, 800, 800 },
950 .vfront_porch = { 4, 4, 4 },
951 .vback_porch = { 8, 8, 8 },
952 .vsync_len = { 18, 20, 20 },
955 static const struct panel_desc auo_b101ean01 = {
956 .timings = &auo_b101ean01_timing,
965 static const struct drm_display_mode auo_b116xak01_mode = {
968 .hsync_start = 1366 + 48,
969 .hsync_end = 1366 + 48 + 32,
970 .htotal = 1366 + 48 + 32 + 10,
972 .vsync_start = 768 + 4,
973 .vsync_end = 768 + 4 + 6,
974 .vtotal = 768 + 4 + 6 + 15,
975 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
978 static const struct panel_desc auo_b116xak01 = {
979 .modes = &auo_b116xak01_mode,
991 static const struct drm_display_mode auo_b116xw03_mode = {
994 .hsync_start = 1366 + 40,
995 .hsync_end = 1366 + 40 + 40,
996 .htotal = 1366 + 40 + 40 + 32,
998 .vsync_start = 768 + 10,
999 .vsync_end = 768 + 10 + 12,
1000 .vtotal = 768 + 10 + 12 + 6,
1001 .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
1004 static const struct panel_desc auo_b116xw03 = {
1005 .modes = &auo_b116xw03_mode,
1017 static const struct drm_display_mode auo_b133han05_mode = {
1020 .hsync_start = 1920 + 58,
1021 .hsync_end = 1920 + 58 + 42,
1022 .htotal = 1920 + 58 + 42 + 60,
1024 .vsync_start = 1080 + 3,
1025 .vsync_end = 1080 + 3 + 5,
1026 .vtotal = 1080 + 3 + 5 + 54,
1029 static const struct panel_desc auo_b133han05 = {
1030 .modes = &auo_b133han05_mode,
1038 .hpd_reliable = 100,
1044 static const struct drm_display_mode auo_b133htn01_mode = {
1047 .hsync_start = 1920 + 172,
1048 .hsync_end = 1920 + 172 + 80,
1049 .htotal = 1920 + 172 + 80 + 60,
1051 .vsync_start = 1080 + 25,
1052 .vsync_end = 1080 + 25 + 10,
1053 .vtotal = 1080 + 25 + 10 + 10,
1056 static const struct panel_desc auo_b133htn01 = {
1057 .modes = &auo_b133htn01_mode,
1065 .hpd_reliable = 105,
1071 static const struct drm_display_mode auo_b133xtn01_mode = {
1074 .hsync_start = 1366 + 48,
1075 .hsync_end = 1366 + 48 + 32,
1076 .htotal = 1366 + 48 + 32 + 20,
1078 .vsync_start = 768 + 3,
1079 .vsync_end = 768 + 3 + 6,
1080 .vtotal = 768 + 3 + 6 + 13,
1083 static const struct panel_desc auo_b133xtn01 = {
1084 .modes = &auo_b133xtn01_mode,
1093 static const struct drm_display_mode auo_b140han06_mode = {
1096 .hsync_start = 1920 + 16,
1097 .hsync_end = 1920 + 16 + 16,
1098 .htotal = 1920 + 16 + 16 + 152,
1100 .vsync_start = 1080 + 3,
1101 .vsync_end = 1080 + 3 + 14,
1102 .vtotal = 1080 + 3 + 14 + 19,
1105 static const struct panel_desc auo_b140han06 = {
1106 .modes = &auo_b140han06_mode,
1114 .hpd_reliable = 100,
1120 static const struct drm_display_mode boe_nv101wxmn51_modes[] = {
1124 .hsync_start = 1280 + 48,
1125 .hsync_end = 1280 + 48 + 32,
1126 .htotal = 1280 + 48 + 32 + 80,
1128 .vsync_start = 800 + 3,
1129 .vsync_end = 800 + 3 + 5,
1130 .vtotal = 800 + 3 + 5 + 24,
1135 .hsync_start = 1280 + 48,
1136 .hsync_end = 1280 + 48 + 32,
1137 .htotal = 1280 + 48 + 32 + 80,
1139 .vsync_start = 800 + 3,
1140 .vsync_end = 800 + 3 + 5,
1141 .vtotal = 800 + 3 + 5 + 24,
1145 static const struct panel_desc boe_nv101wxmn51 = {
1146 .modes = boe_nv101wxmn51_modes,
1147 .num_modes = ARRAY_SIZE(boe_nv101wxmn51_modes),
1154 /* TODO: should be hpd-absent and no-hpd should be set? */
1155 .hpd_reliable = 210,
1161 static const struct drm_display_mode boe_nv110wtm_n61_modes[] = {
1165 .hsync_start = 2160 + 48,
1166 .hsync_end = 2160 + 48 + 32,
1167 .htotal = 2160 + 48 + 32 + 100,
1169 .vsync_start = 1440 + 3,
1170 .vsync_end = 1440 + 3 + 6,
1171 .vtotal = 1440 + 3 + 6 + 31,
1172 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1177 .hsync_start = 2160 + 48,
1178 .hsync_end = 2160 + 48 + 32,
1179 .htotal = 2160 + 48 + 32 + 100,
1181 .vsync_start = 1440 + 3,
1182 .vsync_end = 1440 + 3 + 6,
1183 .vtotal = 1440 + 3 + 6 + 31,
1184 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1188 static const struct panel_desc boe_nv110wtm_n61 = {
1189 .modes = boe_nv110wtm_n61_modes,
1190 .num_modes = ARRAY_SIZE(boe_nv110wtm_n61_modes),
1198 .prepare_to_enable = 80,
1204 /* Also used for boe_nv133fhm_n62 */
1205 static const struct drm_display_mode boe_nv133fhm_n61_modes = {
1208 .hsync_start = 1920 + 48,
1209 .hsync_end = 1920 + 48 + 32,
1210 .htotal = 1920 + 48 + 32 + 200,
1212 .vsync_start = 1080 + 3,
1213 .vsync_end = 1080 + 3 + 6,
1214 .vtotal = 1080 + 3 + 6 + 31,
1215 .flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC,
1218 /* Also used for boe_nv133fhm_n62 */
1219 static const struct panel_desc boe_nv133fhm_n61 = {
1220 .modes = &boe_nv133fhm_n61_modes,
1229 * When power is first given to the panel there's a short
1230 * spike on the HPD line. It was explained that this spike
1231 * was until the TCON data download was complete. On
1232 * one system this was measured at 8 ms. We'll put 15 ms
1233 * in the prepare delay just to be safe. That means:
1234 * - If HPD isn't hooked up you still have 200 ms delay.
1235 * - If HPD is hooked up we won't try to look at it for the
1245 static const struct drm_display_mode boe_nv140fhmn49_modes[] = {
1249 .hsync_start = 1920 + 48,
1250 .hsync_end = 1920 + 48 + 32,
1253 .vsync_start = 1080 + 3,
1254 .vsync_end = 1080 + 3 + 5,
1259 static const struct panel_desc boe_nv140fhmn49 = {
1260 .modes = boe_nv140fhmn49_modes,
1261 .num_modes = ARRAY_SIZE(boe_nv140fhmn49_modes),
1268 /* TODO: should be hpd-absent and no-hpd should be set? */
1269 .hpd_reliable = 210,
1275 static const struct drm_display_mode innolux_n116bca_ea1_mode = {
1278 .hsync_start = 1366 + 136,
1279 .hsync_end = 1366 + 136 + 30,
1280 .htotal = 1366 + 136 + 30 + 60,
1282 .vsync_start = 768 + 8,
1283 .vsync_end = 768 + 8 + 12,
1284 .vtotal = 768 + 8 + 12 + 12,
1285 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1288 static const struct panel_desc innolux_n116bca_ea1 = {
1289 .modes = &innolux_n116bca_ea1_mode,
1298 .prepare_to_enable = 80,
1304 * Datasheet specifies that at 60 Hz refresh rate:
1305 * - total horizontal time: { 1506, 1592, 1716 }
1306 * - total vertical time: { 788, 800, 868 }
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
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,
1326 static const struct panel_desc innolux_n116bge = {
1327 .timings = &innolux_n116bge_timing,
1336 static const struct drm_display_mode innolux_n125hce_gn1_mode = {
1339 .hsync_start = 1920 + 40,
1340 .hsync_end = 1920 + 40 + 40,
1341 .htotal = 1920 + 40 + 40 + 80,
1343 .vsync_start = 1080 + 4,
1344 .vsync_end = 1080 + 4 + 4,
1345 .vtotal = 1080 + 4 + 4 + 24,
1348 static const struct panel_desc innolux_n125hce_gn1 = {
1349 .modes = &innolux_n125hce_gn1_mode,
1358 static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
1361 .hsync_start = 2160 + 48,
1362 .hsync_end = 2160 + 48 + 32,
1363 .htotal = 2160 + 48 + 32 + 80,
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,
1371 static const struct panel_desc innolux_p120zdg_bf1 = {
1372 .modes = &innolux_p120zdg_bf1_mode,
1385 static const struct drm_display_mode ivo_m133nwf4_r0_mode = {
1388 .hsync_start = 1920 + 24,
1389 .hsync_end = 1920 + 24 + 48,
1390 .htotal = 1920 + 24 + 48 + 88,
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,
1398 static const struct panel_desc ivo_m133nwf4_r0 = {
1399 .modes = &ivo_m133nwf4_r0_mode,
1412 static const struct drm_display_mode kingdisplay_kd116n21_30nv_a010_mode = {
1415 .hsync_start = 1366 + 40,
1416 .hsync_end = 1366 + 40 + 32,
1417 .htotal = 1366 + 40 + 32 + 62,
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,
1425 static const struct panel_desc kingdisplay_kd116n21_30nv_a010 = {
1426 .modes = &kingdisplay_kd116n21_30nv_a010_mode,
1438 static const struct drm_display_mode lg_lp079qx1_sp0v_mode = {
1441 .hsync_start = 1536 + 12,
1442 .hsync_end = 1536 + 12 + 16,
1443 .htotal = 1536 + 12 + 16 + 48,
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,
1451 static const struct panel_desc lg_lp079qx1_sp0v = {
1452 .modes = &lg_lp079qx1_sp0v_mode,
1460 static const struct drm_display_mode lg_lp097qx1_spa1_mode = {
1463 .hsync_start = 2048 + 150,
1464 .hsync_end = 2048 + 150 + 5,
1465 .htotal = 2048 + 150 + 5 + 5,
1467 .vsync_start = 1536 + 3,
1468 .vsync_end = 1536 + 3 + 1,
1469 .vtotal = 1536 + 3 + 1 + 9,
1472 static const struct panel_desc lg_lp097qx1_spa1 = {
1473 .modes = &lg_lp097qx1_spa1_mode,
1481 static const struct drm_display_mode lg_lp120up1_mode = {
1484 .hsync_start = 1920 + 40,
1485 .hsync_end = 1920 + 40 + 40,
1486 .htotal = 1920 + 40 + 40 + 80,
1488 .vsync_start = 1280 + 4,
1489 .vsync_end = 1280 + 4 + 4,
1490 .vtotal = 1280 + 4 + 4 + 12,
1493 static const struct panel_desc lg_lp120up1 = {
1494 .modes = &lg_lp120up1_mode,
1503 static const struct drm_display_mode lg_lp129qe_mode = {
1506 .hsync_start = 2560 + 48,
1507 .hsync_end = 2560 + 48 + 32,
1508 .htotal = 2560 + 48 + 32 + 80,
1510 .vsync_start = 1700 + 3,
1511 .vsync_end = 1700 + 3 + 10,
1512 .vtotal = 1700 + 3 + 10 + 36,
1515 static const struct panel_desc lg_lp129qe = {
1516 .modes = &lg_lp129qe_mode,
1525 static const struct drm_display_mode neweast_wjfh116008a_modes[] = {
1529 .hsync_start = 1920 + 48,
1530 .hsync_end = 1920 + 48 + 32,
1531 .htotal = 1920 + 48 + 32 + 80,
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,
1540 .hsync_start = 1920 + 48,
1541 .hsync_end = 1920 + 48 + 32,
1542 .htotal = 1920 + 48 + 32 + 80,
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,
1551 static const struct panel_desc neweast_wjfh116008a = {
1552 .modes = neweast_wjfh116008a_modes,
1560 .hpd_reliable = 110,
1566 static const struct drm_display_mode samsung_lsn122dl01_c01_mode = {
1569 .hsync_start = 2560 + 48,
1570 .hsync_end = 2560 + 48 + 32,
1571 .htotal = 2560 + 48 + 32 + 80,
1573 .vsync_start = 1600 + 2,
1574 .vsync_end = 1600 + 2 + 5,
1575 .vtotal = 1600 + 2 + 5 + 57,
1578 static const struct panel_desc samsung_lsn122dl01_c01 = {
1579 .modes = &samsung_lsn122dl01_c01_mode,
1587 static const struct drm_display_mode samsung_ltn140at29_301_mode = {
1590 .hsync_start = 1366 + 64,
1591 .hsync_end = 1366 + 64 + 48,
1592 .htotal = 1366 + 64 + 48 + 128,
1594 .vsync_start = 768 + 2,
1595 .vsync_end = 768 + 2 + 5,
1596 .vtotal = 768 + 2 + 5 + 17,
1599 static const struct panel_desc samsung_ltn140at29_301 = {
1600 .modes = &samsung_ltn140at29_301_mode,
1609 static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
1612 .hsync_start = 1920 + 48,
1613 .hsync_end = 1920 + 48 + 32,
1614 .htotal = 1920 + 48 + 32 + 80,
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,
1622 static const struct panel_desc sharp_ld_d5116z01b = {
1623 .modes = &sharp_ld_d5116z01b_mode,
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,
1645 static const struct panel_desc sharp_lq123p1jx31 = {
1646 .timings = &sharp_lq123p1jx31_timing,
1654 .hpd_reliable = 110,
1660 static const struct drm_display_mode sharp_lq140m1jw46_mode[] = {
1664 .hsync_start = 1920 + 48,
1665 .hsync_end = 1920 + 48 + 32,
1666 .htotal = 1920 + 48 + 32 + 80,
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,
1675 .hsync_start = 1920 + 48,
1676 .hsync_end = 1920 + 48 + 32,
1677 .htotal = 1920 + 48 + 32 + 80,
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,
1686 static const struct panel_desc sharp_lq140m1jw46 = {
1687 .modes = sharp_lq140m1jw46_mode,
1688 .num_modes = ARRAY_SIZE(sharp_lq140m1jw46_mode),
1701 static const struct drm_display_mode starry_kr122ea0sra_mode = {
1704 .hsync_start = 1920 + 16,
1705 .hsync_end = 1920 + 16 + 16,
1706 .htotal = 1920 + 16 + 16 + 32,
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,
1714 static const struct panel_desc starry_kr122ea0sra = {
1715 .modes = &starry_kr122ea0sra_mode,
1722 /* TODO: should be hpd-absent and no-hpd should be set? */
1723 .hpd_reliable = 10 + 200,
1725 .unprepare = 10 + 500,
1729 static const struct of_device_id platform_of_match[] = {
1732 .compatible = "edp-panel",
1734 .compatible = "auo,b101ean01",
1735 .data = &auo_b101ean01,
1737 .compatible = "auo,b116xa01",
1738 .data = &auo_b116xak01,
1740 .compatible = "auo,b116xw03",
1741 .data = &auo_b116xw03,
1743 .compatible = "auo,b133han05",
1744 .data = &auo_b133han05,
1746 .compatible = "auo,b133htn01",
1747 .data = &auo_b133htn01,
1749 .compatible = "auo,b133xtn01",
1750 .data = &auo_b133xtn01,
1752 .compatible = "auo,b140han06",
1753 .data = &auo_b140han06,
1755 .compatible = "boe,nv101wxmn51",
1756 .data = &boe_nv101wxmn51,
1758 .compatible = "boe,nv110wtm-n61",
1759 .data = &boe_nv110wtm_n61,
1761 .compatible = "boe,nv133fhm-n61",
1762 .data = &boe_nv133fhm_n61,
1764 .compatible = "boe,nv133fhm-n62",
1765 .data = &boe_nv133fhm_n61,
1767 .compatible = "boe,nv140fhmn49",
1768 .data = &boe_nv140fhmn49,
1770 .compatible = "innolux,n116bca-ea1",
1771 .data = &innolux_n116bca_ea1,
1773 .compatible = "innolux,n116bge",
1774 .data = &innolux_n116bge,
1776 .compatible = "innolux,n125hce-gn1",
1777 .data = &innolux_n125hce_gn1,
1779 .compatible = "innolux,p120zdg-bf1",
1780 .data = &innolux_p120zdg_bf1,
1782 .compatible = "ivo,m133nwf4-r0",
1783 .data = &ivo_m133nwf4_r0,
1785 .compatible = "kingdisplay,kd116n21-30nv-a010",
1786 .data = &kingdisplay_kd116n21_30nv_a010,
1788 .compatible = "lg,lp079qx1-sp0v",
1789 .data = &lg_lp079qx1_sp0v,
1791 .compatible = "lg,lp097qx1-spa1",
1792 .data = &lg_lp097qx1_spa1,
1794 .compatible = "lg,lp120up1",
1795 .data = &lg_lp120up1,
1797 .compatible = "lg,lp129qe",
1798 .data = &lg_lp129qe,
1800 .compatible = "neweast,wjfh116008a",
1801 .data = &neweast_wjfh116008a,
1803 .compatible = "samsung,lsn122dl01-c01",
1804 .data = &samsung_lsn122dl01_c01,
1806 .compatible = "samsung,ltn140at29-301",
1807 .data = &samsung_ltn140at29_301,
1809 .compatible = "sharp,ld-d5116z01b",
1810 .data = &sharp_ld_d5116z01b,
1812 .compatible = "sharp,lq123p1jx31",
1813 .data = &sharp_lq123p1jx31,
1815 .compatible = "sharp,lq140m1jw46",
1816 .data = &sharp_lq140m1jw46,
1818 .compatible = "starry,kr122ea0sra",
1819 .data = &starry_kr122ea0sra,
1824 MODULE_DEVICE_TABLE(of, platform_of_match);
1826 static const struct panel_delay delay_200_500_p2e80 = {
1829 .prepare_to_enable = 80,
1832 static const struct panel_delay delay_200_500_p2e100 = {
1835 .prepare_to_enable = 100,
1838 static const struct panel_delay delay_200_500_e50 = {
1844 static const struct panel_delay delay_200_500_e80_d50 = {
1851 static const struct panel_delay delay_100_500_e200 = {
1857 static const struct panel_delay delay_200_500_e200 = {
1863 #define EDP_PANEL_ENTRY(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _delay, _name) \
1866 .panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
1872 * This table is used to figure out power sequencing delays for panels that
1873 * are detected by EDID. Entries here may point to entries in the
1874 * platform_of_match table (if a panel is listed in both places).
1876 * Sort first by vendor, then by product ID.
1878 static const struct edp_panel_entry edp_panels[] = {
1879 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1062, &delay_200_500_e50, "B120XAN01.0"),
1880 EDP_PANEL_ENTRY('A', 'U', 'O', 0x1e9b, &delay_200_500_e50, "B133UAN02.1"),
1881 EDP_PANEL_ENTRY('A', 'U', 'O', 0x405c, &auo_b116xak01.delay, "B116XAK01"),
1882 EDP_PANEL_ENTRY('A', 'U', 'O', 0x615c, &delay_200_500_e50, "B116XAN06.1"),
1883 EDP_PANEL_ENTRY('A', 'U', 'O', 0x8594, &delay_200_500_e50, "B133UAN01.0"),
1885 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0786, &delay_200_500_p2e80, "NV116WHM-T01"),
1886 EDP_PANEL_ENTRY('B', 'O', 'E', 0x07d1, &boe_nv133fhm_n61.delay, "NV133FHM-N61"),
1887 EDP_PANEL_ENTRY('B', 'O', 'E', 0x082d, &boe_nv133fhm_n61.delay, "NV133FHM-N62"),
1888 EDP_PANEL_ENTRY('B', 'O', 'E', 0x098d, &boe_nv110wtm_n61.delay, "NV110WTM-N61"),
1889 EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
1891 EDP_PANEL_ENTRY('C', 'M', 'N', 0x114c, &innolux_n116bca_ea1.delay, "N116BCA-EA1"),
1892 EDP_PANEL_ENTRY('C', 'M', 'N', 0x1247, &delay_200_500_e80_d50, "N120ACA-EA1"),
1894 EDP_PANEL_ENTRY('I', 'V', 'O', 0x057d, &delay_200_500_e200, "R140NWF5 RH"),
1895 EDP_PANEL_ENTRY('I', 'V', 'O', 0x854b, &delay_200_500_p2e100, "M133NW4J-R3"),
1897 EDP_PANEL_ENTRY('K', 'D', 'B', 0x0624, &kingdisplay_kd116n21_30nv_a010.delay, "116N21-30NV-A010"),
1898 EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
1900 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
1901 EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &sharp_lq140m1jw46.delay, "LQ140M1JW46"),
1902 EDP_PANEL_ENTRY('S', 'H', 'P', 0x154c, &delay_200_500_p2e100, "LQ116M1JW10"),
1904 EDP_PANEL_ENTRY('S', 'T', 'A', 0x0100, &delay_100_500_e200, "2081116HHD028001-51D"),
1909 static const struct edp_panel_entry *find_edp_panel(u32 panel_id)
1911 const struct edp_panel_entry *panel;
1916 for (panel = edp_panels; panel->panel_id; panel++)
1917 if (panel->panel_id == panel_id)
1923 static int panel_edp_platform_probe(struct platform_device *pdev)
1925 const struct of_device_id *id;
1927 /* Skip one since "edp-panel" is only supported on DP AUX bus */
1928 id = of_match_node(platform_of_match + 1, pdev->dev.of_node);
1932 return panel_edp_probe(&pdev->dev, id->data, NULL);
1935 static int panel_edp_platform_remove(struct platform_device *pdev)
1937 return panel_edp_remove(&pdev->dev);
1940 static void panel_edp_platform_shutdown(struct platform_device *pdev)
1942 panel_edp_shutdown(&pdev->dev);
1945 static const struct dev_pm_ops panel_edp_pm_ops = {
1946 SET_RUNTIME_PM_OPS(panel_edp_suspend, panel_edp_resume, NULL)
1947 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1948 pm_runtime_force_resume)
1951 static struct platform_driver panel_edp_platform_driver = {
1953 .name = "panel-edp",
1954 .of_match_table = platform_of_match,
1955 .pm = &panel_edp_pm_ops,
1957 .probe = panel_edp_platform_probe,
1958 .remove = panel_edp_platform_remove,
1959 .shutdown = panel_edp_platform_shutdown,
1962 static int panel_edp_dp_aux_ep_probe(struct dp_aux_ep_device *aux_ep)
1964 const struct of_device_id *id;
1966 id = of_match_node(platform_of_match, aux_ep->dev.of_node);
1970 return panel_edp_probe(&aux_ep->dev, id->data, aux_ep->aux);
1973 static void panel_edp_dp_aux_ep_remove(struct dp_aux_ep_device *aux_ep)
1975 panel_edp_remove(&aux_ep->dev);
1978 static void panel_edp_dp_aux_ep_shutdown(struct dp_aux_ep_device *aux_ep)
1980 panel_edp_shutdown(&aux_ep->dev);
1983 static struct dp_aux_ep_driver panel_edp_dp_aux_ep_driver = {
1985 .name = "panel-simple-dp-aux",
1986 .of_match_table = platform_of_match, /* Same as platform one! */
1987 .pm = &panel_edp_pm_ops,
1989 .probe = panel_edp_dp_aux_ep_probe,
1990 .remove = panel_edp_dp_aux_ep_remove,
1991 .shutdown = panel_edp_dp_aux_ep_shutdown,
1994 static int __init panel_edp_init(void)
1998 err = platform_driver_register(&panel_edp_platform_driver);
2002 err = dp_aux_dp_driver_register(&panel_edp_dp_aux_ep_driver);
2004 goto err_did_platform_register;
2008 err_did_platform_register:
2009 platform_driver_unregister(&panel_edp_platform_driver);
2013 module_init(panel_edp_init);
2015 static void __exit panel_edp_exit(void)
2017 dp_aux_dp_driver_unregister(&panel_edp_dp_aux_ep_driver);
2018 platform_driver_unregister(&panel_edp_platform_driver);
2020 module_exit(panel_edp_exit);
2022 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
2023 MODULE_DESCRIPTION("DRM Driver for Simple eDP Panels");
2024 MODULE_LICENSE("GPL and additional rights");