46  * struct panel_delay - Describes delays for a simple panel.
52 	 * The time (in milliseconds) that it takes after powering the panel
56 	 * NOTE: on some old panel data this number appears to be much too big.
108 	 * @enable: Time for the panel to display a valid frame.
110 	 * The time (in milliseconds) that it takes for the panel to
121 	 * @disable: Time for the panel to turn the display off.
123 	 * The time (in milliseconds) that it takes for the panel to
134 	 * The time (in milliseconds) that it takes for the panel
148  * struct panel_desc - Describes a simple panel.
152 	 * @modes: Pointer to array of fixed modes appropriate for this panel.
177 	/** @size: Structure containing the physical size of this panel. */
190 	/** @delay: Structure containing various delay values for this panel. */
195  * struct edp_panel_entry - Maps panel ID to delay / panel name.
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. */
204 	/** @name: Name of this panel (for printing to logs). */
236 static inline struct panel_edp *to_panel_edp(struct drm_panel *panel)  in to_panel_edp()  argument
238 	return container_of(panel, struct panel_edp, base);  in to_panel_edp()
241 static unsigned int panel_edp_get_timings_modes(struct panel_edp *panel,  in panel_edp_get_timings_modes()  argument
247 	for (i = 0; i < panel->desc->num_timings; i++) {  in panel_edp_get_timings_modes()
248 		const struct display_timing *dt = &panel->desc->timings[i];  in panel_edp_get_timings_modes()
254 			dev_err(panel->base.dev, "failed to add mode %ux%u\n",  in panel_edp_get_timings_modes()
263 		if (panel->desc->num_timings == 1)  in panel_edp_get_timings_modes()
273 static unsigned int panel_edp_get_display_modes(struct panel_edp *panel,  in panel_edp_get_display_modes()  argument
279 	for (i = 0; i < panel->desc->num_modes; i++) {  in panel_edp_get_display_modes()
280 		const struct drm_display_mode *m = &panel->desc->modes[i];  in panel_edp_get_display_modes()
284 			dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n",  in panel_edp_get_display_modes()
292 		if (panel->desc->num_modes == 1)  in panel_edp_get_display_modes()
304 static int panel_edp_get_non_edid_modes(struct panel_edp *panel,  in panel_edp_get_non_edid_modes()  argument
308 	bool has_override = panel->override_mode.type;  in panel_edp_get_non_edid_modes()
311 	if (!panel->desc)  in panel_edp_get_non_edid_modes()
316 					  &panel->override_mode);  in panel_edp_get_non_edid_modes()
321 			dev_err(panel->base.dev, "failed to add override mode\n");  in panel_edp_get_non_edid_modes()
326 	if (num == 0 && panel->desc->num_timings)  in panel_edp_get_non_edid_modes()
327 		num = panel_edp_get_timings_modes(panel, connector);  in panel_edp_get_non_edid_modes()
335 	WARN_ON(panel->desc->num_timings && panel->desc->num_modes);  in panel_edp_get_non_edid_modes()
337 		num = panel_edp_get_display_modes(panel, connector);  in panel_edp_get_non_edid_modes()
339 	connector->display_info.bpc = panel->desc->bpc;  in panel_edp_get_non_edid_modes()
340 	connector->display_info.width_mm = panel->desc->size.width;  in panel_edp_get_non_edid_modes()
341 	connector->display_info.height_mm = panel->desc->size.height;  in panel_edp_get_non_edid_modes()
360 static int panel_edp_disable(struct drm_panel *panel)  in panel_edp_disable()  argument
362 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_disable()
386 static int panel_edp_unprepare(struct drm_panel *panel)  in panel_edp_unprepare()  argument
388 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_unprepare()
395 	pm_runtime_mark_last_busy(panel->dev);  in panel_edp_unprepare()
396 	ret = pm_runtime_put_autosuspend(panel->dev);  in panel_edp_unprepare()
505 static int panel_edp_prepare(struct drm_panel *panel)  in panel_edp_prepare()  argument
507 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_prepare()
514 	ret = pm_runtime_get_sync(panel->dev);  in panel_edp_prepare()
516 		pm_runtime_put_autosuspend(panel->dev);  in panel_edp_prepare()
525 static int panel_edp_enable(struct drm_panel *panel)  in panel_edp_enable()  argument
527 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_enable()
538 	 * However, we can only count this if HPD is readable by the panel  in panel_edp_enable()
566 static int panel_edp_get_modes(struct drm_panel *panel,  in panel_edp_get_modes()  argument
569 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_get_modes()
574 		pm_runtime_get_sync(panel->dev);  in panel_edp_get_modes()
582 		pm_runtime_mark_last_busy(panel->dev);  in panel_edp_get_modes()
583 		pm_runtime_put_autosuspend(panel->dev);  in panel_edp_get_modes()
587 	 * Add hard-coded panel modes. Don't call this if there are no timings  in panel_edp_get_modes()
588 	 * and no modes (the generic edp-panel case) because it will clobber  in panel_edp_get_modes()
605 static int panel_edp_get_timings(struct drm_panel *panel,  in panel_edp_get_timings()  argument
609 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_get_timings()
622 static enum drm_panel_orientation panel_edp_get_orientation(struct drm_panel *panel)  in panel_edp_get_orientation()  argument
624 	struct panel_edp *p = to_panel_edp(panel);  in panel_edp_get_orientation()
631 	struct drm_panel *panel = s->private;  in detected_panel_show()  local
632 	struct panel_edp *p = to_panel_edp(panel);  in detected_panel_show()
646 static void panel_edp_debugfs_init(struct drm_panel *panel, struct dentry *root)  in panel_edp_debugfs_init()  argument
648 	debugfs_create_file("detected_panel", 0600, root, panel, &detected_panel_fops);  in panel_edp_debugfs_init()
666 					      struct panel_edp *panel,  in panel_edp_parse_panel_timing_node()  argument
669 	const struct panel_desc *desc = panel->desc;  in panel_edp_parse_panel_timing_node()
674 		dev_err(dev, "Reject override mode: panel has a fixed mode\n");  in panel_edp_parse_panel_timing_node()
682 	for (i = 0; i < panel->desc->num_timings; i++) {  in panel_edp_parse_panel_timing_node()
683 		const struct display_timing *dt = &panel->desc->timings[i];  in panel_edp_parse_panel_timing_node()
699 		drm_display_mode_from_videomode(&vm, &panel->override_mode);  in panel_edp_parse_panel_timing_node()
700 		panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |  in panel_edp_parse_panel_timing_node()
705 	if (WARN_ON(!panel->override_mode.type))  in panel_edp_parse_panel_timing_node()
711 static int generic_edp_panel_probe(struct device *dev, struct panel_edp *panel)  in generic_edp_panel_probe()  argument
724 	panel->desc = desc;  in generic_edp_panel_probe()
736 	/* Power the panel on so we can read the EDID */  in generic_edp_panel_probe()
739 		dev_err(dev, "Couldn't power on panel to read EDID: %d\n", ret);  in generic_edp_panel_probe()
743 	panel_id = drm_edid_get_panel_id(panel->ddc);  in generic_edp_panel_probe()
745 		dev_err(dev, "Couldn't identify panel via EDID\n");  in generic_edp_panel_probe()
751 	panel->detected_panel = find_edp_panel(panel_id);  in generic_edp_panel_probe()
758 	if (WARN_ON(!panel->detected_panel)) {  in generic_edp_panel_probe()
760 			 "Unknown panel %s %#06x, using conservative timings\n",  in generic_edp_panel_probe()
764 		 * It's highly likely that the panel will work if we use very  in generic_edp_panel_probe()
781 		panel->detected_panel = ERR_PTR(-EINVAL);  in generic_edp_panel_probe()
784 			 vend, panel->detected_panel->name, product_id);  in generic_edp_panel_probe()
787 		desc->delay = *panel->detected_panel->delay;  in generic_edp_panel_probe()
801 	struct panel_edp *panel;  in panel_edp_probe()  local
806 	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);  in panel_edp_probe()
807 	if (!panel)  in panel_edp_probe()
810 	panel->enabled = false;  in panel_edp_probe()
811 	panel->prepared_time = 0;  in panel_edp_probe()
812 	panel->desc = desc;  in panel_edp_probe()
813 	panel->aux = aux;  in panel_edp_probe()
815 	panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd");  in panel_edp_probe()
816 	if (!panel->no_hpd) {  in panel_edp_probe()
817 		err = panel_edp_get_hpd_gpio(dev, panel);  in panel_edp_probe()
822 	panel->supply = devm_regulator_get(dev, "power");  in panel_edp_probe()
823 	if (IS_ERR(panel->supply))  in panel_edp_probe()
824 		return PTR_ERR(panel->supply);  in panel_edp_probe()
826 	panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",  in panel_edp_probe()
828 	if (IS_ERR(panel->enable_gpio))  in panel_edp_probe()
829 		return dev_err_probe(dev, PTR_ERR(panel->enable_gpio),  in panel_edp_probe()
832 	err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);  in panel_edp_probe()
840 		panel->ddc = of_find_i2c_adapter_by_node(ddc);  in panel_edp_probe()
843 		if (!panel->ddc)  in panel_edp_probe()
846 		panel->ddc = &aux->ddc;  in panel_edp_probe()
849 	if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))  in panel_edp_probe()
850 		panel_edp_parse_panel_timing_node(dev, panel, &dt);  in panel_edp_probe()
852 	dev_set_drvdata(dev, panel);  in panel_edp_probe()
854 	drm_panel_init(&panel->base, dev, &panel_edp_funcs, DRM_MODE_CONNECTOR_eDP);  in panel_edp_probe()
856 	err = drm_panel_of_backlight(&panel->base);  in panel_edp_probe()
861 	 * We use runtime PM for prepare / unprepare since those power the panel  in panel_edp_probe()
863 	 * to optimize powering the panel on briefly to read the EDID before  in panel_edp_probe()
864 	 * fully enabling the panel.  in panel_edp_probe()
870 	if (of_device_is_compatible(dev->of_node, "edp-panel")) {  in panel_edp_probe()
871 		err = generic_edp_panel_probe(dev, panel);  in panel_edp_probe()
874 				      "Couldn't detect panel nor find a fallback\n");  in panel_edp_probe()
877 		/* generic_edp_panel_probe() replaces desc in the panel */  in panel_edp_probe()
878 		desc = panel->desc;  in panel_edp_probe()
883 	if (!panel->base.backlight && panel->aux) {  in panel_edp_probe()
885 		err = drm_panel_dp_aux_backlight(&panel->base, panel->aux);  in panel_edp_probe()
892 	drm_panel_add(&panel->base);  in panel_edp_probe()
900 	if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))  in panel_edp_probe()
901 		put_device(&panel->ddc->dev);  in panel_edp_probe()
908 	struct panel_edp *panel = dev_get_drvdata(dev);  in panel_edp_remove()  local
910 	drm_panel_remove(&panel->base);  in panel_edp_remove()
911 	drm_panel_disable(&panel->base);  in panel_edp_remove()
912 	drm_panel_unprepare(&panel->base);  in panel_edp_remove()
916 	if (panel->ddc && (!panel->aux || panel->ddc != &panel->aux->ddc))  in panel_edp_remove()
917 		put_device(&panel->ddc->dev);  in panel_edp_remove()
919 	kfree(panel->edid);  in panel_edp_remove()
920 	panel->edid = NULL;  in panel_edp_remove()
925 	struct panel_edp *panel = dev_get_drvdata(dev);  in panel_edp_shutdown()  local
927 	drm_panel_disable(&panel->base);  in panel_edp_shutdown()
928 	drm_panel_unprepare(&panel->base);  in panel_edp_shutdown()
1191 		 * When power is first given to the panel there's a short
1695 		.compatible = "edp-panel",
1834  * platform_of_match table (if a panel is listed in both places).
1884 	const struct edp_panel_entry *panel;  in find_edp_panel()  local
1889 	for (panel = edp_panels; panel->panel_id; panel++)  in find_edp_panel()
1890 		if (panel->panel_id == panel_id)  in find_edp_panel()
1891 			return panel;  in find_edp_panel()
1900 	/* Skip one since "edp-panel" is only supported on DP AUX bus */  in panel_edp_platform_probe()
1926 		.name = "panel-edp",
1958 		.name = "panel-simple-dp-aux",