panel-simple.c

/*
 * Copyright (C) 2013, NVIDIA Corporation.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sub license,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>

#include <video/display_timing.h>
#include <video/of_display_timing.h>
#include <video/videomode.h>

#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>

/**
 * struct panel_desc - Describes a simple panel.
 */
struct panel_desc {
	/**
	 * @modes: Pointer to array of fixed modes appropriate for this panel.
	 *
	 * If only one mode then this can just be the address of the mode.
	 * NOTE: cannot be used with "timings" and also if this is specified
	 * then you cannot override the mode in the device tree.
	 */
	const struct drm_display_mode *modes;

	/** @num_modes: Number of elements in modes array. */
	unsigned int num_modes;

	/**
	 * @timings: Pointer to array of display timings
	 *
	 * NOTE: cannot be used with "modes" and also these will be used to
	 * validate a device tree override if one is present.
	 */
	const struct display_timing *timings;

	/** @num_timings: Number of elements in timings array. */
	unsigned int num_timings;

	/** @bpc: Bits per color. */
	unsigned int bpc;

	/** @size: Structure containing the physical size of this panel. */
	struct {
		/**
		 * @size.width: Width (in mm) of the active display area.
		 */
		unsigned int width;

		/**
		 * @size.height: Height (in mm) of the active display area.
		 */
		unsigned int height;
	} size;

	/** @delay: Structure containing various delay values for this panel. */
	struct {
		/**
		 * @delay.prepare: Time for the panel to become ready.
		 *
		 * The time (in milliseconds) that it takes for the panel to
		 * become ready and start receiving video data
		 */
		unsigned int prepare;

		/**
		 * @delay.enable: Time for the panel to display a valid frame.
		 *
		 * The time (in milliseconds) that it takes for the panel to
		 * display the first valid frame after starting to receive
		 * video data.
		 */
		unsigned int enable;

		/**
		 * @delay.disable: Time for the panel to turn the display off.
		 *
		 * The time (in milliseconds) that it takes for the panel to
		 * turn the display off (no content is visible).
		 */
		unsigned int disable;

		/**
		 * @delay.unprepare: Time to power down completely.
		 *
		 * The time (in milliseconds) that it takes for the panel
		 * to power itself down completely.
		 *
		 * This time is used to prevent a future "prepare" from
		 * starting until at least this many milliseconds has passed.
		 * If at prepare time less time has passed since unprepare
		 * finished, the driver waits for the remaining time.
		 */
		unsigned int unprepare;
	} delay;

	/** @bus_format: See MEDIA_BUS_FMT_... defines. */
	u32 bus_format;

	/** @bus_flags: See DRM_BUS_FLAG_... defines. */
	u32 bus_flags;

	/** @connector_type: LVDS, eDP, DSI, DPI, etc. */
	int connector_type;
};

struct panel_simple {
	struct drm_panel base;
	bool enabled;

	bool prepared;

	ktime_t prepared_time;
	ktime_t unprepared_time;

	const struct panel_desc *desc;

	struct regulator *supply;
	struct i2c_adapter *ddc;

	struct gpio_desc *enable_gpio;

	struct edid *edid;

	struct drm_display_mode override_mode;

	enum drm_panel_orientation orientation;
};

static inline struct panel_simple *to_panel_simple(struct drm_panel *panel)
{
	return container_of(panel, struct panel_simple, base);
}

static unsigned int panel_simple_get_timings_modes(struct panel_simple *panel,
						   struct drm_connector *connector)
{
	struct drm_display_mode *mode;
	unsigned int i, num = 0;

	for (i = 0; i < panel->desc->num_timings; i++) {
		const struct display_timing *dt = &panel->desc->timings[i];
		struct videomode vm;

		videomode_from_timing(dt, &vm);
		mode = drm_mode_create(connector->dev);
		if (!mode) {
			dev_err(panel->base.dev, "failed to add mode %ux%u\n",
				dt->hactive.typ, dt->vactive.typ);
			continue;
		}

		drm_display_mode_from_videomode(&vm, mode);

		mode->type |= DRM_MODE_TYPE_DRIVER;

		if (panel->desc->num_timings == 1)
			mode->type |= DRM_MODE_TYPE_PREFERRED;

		drm_mode_probed_add(connector, mode);
		num++;
	}

	return num;
}

static unsigned int panel_simple_get_display_modes(struct panel_simple *panel,
						   struct drm_connector *connector)
{
	struct drm_display_mode *mode;
	unsigned int i, num = 0;

	for (i = 0; i < panel->desc->num_modes; i++) {
		const struct drm_display_mode *m = &panel->desc->modes[i];

		mode = drm_mode_duplicate(connector->dev, m);
		if (!mode) {
			dev_err(panel->base.dev, "failed to add mode %ux%u@%u\n",
				m->hdisplay, m->vdisplay,
				drm_mode_vrefresh(m));
			continue;
		}

		mode->type |= DRM_MODE_TYPE_DRIVER;

		if (panel->desc->num_modes == 1)
			mode->type |= DRM_MODE_TYPE_PREFERRED;

		drm_mode_set_name(mode);

		drm_mode_probed_add(connector, mode);
		num++;
	}

	return num;
}

static int panel_simple_get_non_edid_modes(struct panel_simple *panel,
					   struct drm_connector *connector)
{
	struct drm_display_mode *mode;
	bool has_override = panel->override_mode.type;
	unsigned int num = 0;

	if (!panel->desc)
		return 0;

	if (has_override) {
		mode = drm_mode_duplicate(connector->dev,
					  &panel->override_mode);
		if (mode) {
			drm_mode_probed_add(connector, mode);
			num = 1;
		} else {
			dev_err(panel->base.dev, "failed to add override mode\n");
		}
	}

	/* Only add timings if override was not there or failed to validate */
	if (num == 0 && panel->desc->num_timings)
		num = panel_simple_get_timings_modes(panel, connector);

	/*
	 * Only add fixed modes if timings/override added no mode.
	 *
	 * We should only ever have either the display timings specified
	 * or a fixed mode. Anything else is rather bogus.
	 */
	WARN_ON(panel->desc->num_timings && panel->desc->num_modes);
	if (num == 0)
		num = panel_simple_get_display_modes(panel, connector);

	connector->display_info.bpc = panel->desc->bpc;
	connector->display_info.width_mm = panel->desc->size.width;
	connector->display_info.height_mm = panel->desc->size.height;
	if (panel->desc->bus_format)
		drm_display_info_set_bus_formats(&connector->display_info,
						 &panel->desc->bus_format, 1);
	connector->display_info.bus_flags = panel->desc->bus_flags;

	return num;
}

static void panel_simple_wait(ktime_t start_ktime, unsigned int min_ms)
{
	ktime_t now_ktime, min_ktime;

	if (!min_ms)
		return;

	min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms));
	now_ktime = ktime_get();

	if (ktime_before(now_ktime, min_ktime))
		msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
}

static int panel_simple_disable(struct drm_panel *panel)
{
	struct panel_simple *p = to_panel_simple(panel);

	if (!p->enabled)
		return 0;

	if (p->desc->delay.disable)
		msleep(p->desc->delay.disable);

	p->enabled = false;

	return 0;
}

static int panel_simple_suspend(struct device *dev)
{
	struct panel_simple *p = dev_get_drvdata(dev);

	gpiod_set_value_cansleep(p->enable_gpio, 0);
	regulator_disable(p->supply);
	p->unprepared_time = ktime_get();

	kfree(p->edid);
	p->edid = NULL;

	return 0;
}

static int panel_simple_unprepare(struct drm_panel *panel)
{
	struct panel_simple *p = to_panel_simple(panel);
	int ret;

	/* Unpreparing when already unprepared is a no-op */
	if (!p->prepared)
		return 0;

	pm_runtime_mark_last_busy(panel->dev);
	ret = pm_runtime_put_autosuspend(panel->dev);
	if (ret < 0)
		return ret;
	p->prepared = false;

	return 0;
}

static int panel_simple_resume(struct device *dev)
{
	struct panel_simple *p = dev_get_drvdata(dev);
	int err;

	panel_simple_wait(p->unprepared_time, p->desc->delay.unprepare);

	err = regulator_enable(p->supply);
	if (err < 0) {
		dev_err(dev, "failed to enable supply: %d\n", err);
		return err;
	}

	gpiod_set_value_cansleep(p->enable_gpio, 1);

	if (p->desc->delay.prepare)
		msleep(p->desc->delay.prepare);

	p->prepared_time = ktime_get();

	return 0;
}

static int panel_simple_prepare(struct drm_panel *panel)
{
	struct panel_simple *p = to_panel_simple(panel);
	int ret;

	/* Preparing when already prepared is a no-op */
	if (p->prepared)
		return 0;

	ret = pm_runtime_get_sync(panel->dev);
	if (ret < 0) {
		pm_runtime_put_autosuspend(panel->dev);
		return ret;
	}

	p->prepared = true;

	return 0;
}

static int panel_simple_enable(struct drm_panel *panel)
{
	struct panel_simple *p = to_panel_simple(panel);

	if (p->enabled)
		return 0;

	if (p->desc->delay.enable)
		msleep(p->desc->delay.enable);

	p->enabled = true;

	return 0;
}

static int panel_simple_get_modes(struct drm_panel *panel,
				  struct drm_connector *connector)
{
	struct panel_simple *p = to_panel_simple(panel);
	int num = 0;

	/* probe EDID if a DDC bus is available */
	if (p->ddc) {
		pm_runtime_get_sync(panel->dev);

		if (!p->edid)
			p->edid = drm_get_edid(connector, p->ddc);

		if (p->edid)
			num += drm_add_edid_modes(connector, p->edid);

		pm_runtime_mark_last_busy(panel->dev);
		pm_runtime_put_autosuspend(panel->dev);
	}

	/* add hard-coded panel modes */
	num += panel_simple_get_non_edid_modes(p, connector);

	/* set up connector's "panel orientation" property */
	drm_connector_set_panel_orientation(connector, p->orientation);

	return num;
}

static int panel_simple_get_timings(struct drm_panel *panel,
				    unsigned int num_timings,
				    struct display_timing *timings)
{
	struct panel_simple *p = to_panel_simple(panel);
	unsigned int i;

	if (p->desc->num_timings < num_timings)
		num_timings = p->desc->num_timings;

	if (timings)
		for (i = 0; i < num_timings; i++)
			timings[i] = p->desc->timings[i];

	return p->desc->num_timings;
}

static const struct drm_panel_funcs panel_simple_funcs = {
	.disable = panel_simple_disable,
	.unprepare = panel_simple_unprepare,
	.prepare = panel_simple_prepare,
	.enable = panel_simple_enable,
	.get_modes = panel_simple_get_modes,
	.get_timings = panel_simple_get_timings,
};

static struct panel_desc panel_dpi;

static int panel_dpi_probe(struct device *dev,
			   struct panel_simple *panel)
{
	struct display_timing *timing;
	const struct device_node *np;
	struct panel_desc *desc;
	unsigned int bus_flags;
	struct videomode vm;
	int ret;

	np = dev->of_node;
	desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
	if (!desc)
		return -ENOMEM;

	timing = devm_kzalloc(dev, sizeof(*timing), GFP_KERNEL);
	if (!timing)
		return -ENOMEM;

	ret = of_get_display_timing(np, "panel-timing", timing);
	if (ret < 0) {
		dev_err(dev, "%pOF: no panel-timing node found for \"panel-dpi\" binding\n",
			np);
		return ret;
	}

	desc->timings = timing;
	desc->num_timings = 1;

	of_property_read_u32(np, "width-mm", &desc->size.width);
	of_property_read_u32(np, "height-mm", &desc->size.height);

	/* Extract bus_flags from display_timing */
	bus_flags = 0;
	vm.flags = timing->flags;
	drm_bus_flags_from_videomode(&vm, &bus_flags);
	desc->bus_flags = bus_flags;

	/* We do not know the connector for the DT node, so guess it */
	desc->connector_type = DRM_MODE_CONNECTOR_DPI;

	panel->desc = desc;

	return 0;
}

#define PANEL_SIMPLE_BOUNDS_CHECK(to_check, bounds, field) \
	(to_check->field.typ >= bounds->field.min && \
	 to_check->field.typ <= bounds->field.max)
static void panel_simple_parse_panel_timing_node(struct device *dev,
						 struct panel_simple *panel,
						 const struct display_timing *ot)
{
	const struct panel_desc *desc = panel->desc;
	struct videomode vm;
	unsigned int i;

	if (WARN_ON(desc->num_modes)) {
		dev_err(dev, "Reject override mode: panel has a fixed mode\n");
		return;
	}
	if (WARN_ON(!desc->num_timings)) {
		dev_err(dev, "Reject override mode: no timings specified\n");
		return;
	}

	for (i = 0; i < panel->desc->num_timings; i++) {
		const struct display_timing *dt = &panel->desc->timings[i];

		if (!PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hactive) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hfront_porch) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hback_porch) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, hsync_len) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vactive) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vfront_porch) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vback_porch) ||
		    !PANEL_SIMPLE_BOUNDS_CHECK(ot, dt, vsync_len))
			continue;

		if (ot->flags != dt->flags)
			continue;

		videomode_from_timing(ot, &vm);
		drm_display_mode_from_videomode(&vm, &panel->override_mode);
		panel->override_mode.type |= DRM_MODE_TYPE_DRIVER |
					     DRM_MODE_TYPE_PREFERRED;
		break;
	}

	if (WARN_ON(!panel->override_mode.type))
		dev_err(dev, "Reject override mode: No display_timing found\n");
}

static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
{
	struct panel_simple *panel;
	struct display_timing dt;
	struct device_node *ddc;
	int connector_type;
	u32 bus_flags;
	int err;

	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
	if (!panel)
		return -ENOMEM;

	panel->enabled = false;
	panel->prepared_time = 0;
	panel->desc = desc;

	panel->supply = devm_regulator_get(dev, "power");
	if (IS_ERR(panel->supply))
		return PTR_ERR(panel->supply);

	panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
						     GPIOD_OUT_LOW);
	if (IS_ERR(panel->enable_gpio)) {
		err = PTR_ERR(panel->enable_gpio);
		if (err != -EPROBE_DEFER)
			dev_err(dev, "failed to request GPIO: %d\n", err);
		return err;
	}

	err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
	if (err) {
		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
		return err;
	}

	ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
	if (ddc) {
		panel->ddc = of_find_i2c_adapter_by_node(ddc);
		of_node_put(ddc);

		if (!panel->ddc)
			return -EPROBE_DEFER;
	}

	if (desc == &panel_dpi) {
		/* Handle the generic panel-dpi binding */
		err = panel_dpi_probe(dev, panel);
		if (err)
			goto free_ddc;
		desc = panel->desc;
	} else {
		if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
			panel_simple_parse_panel_timing_node(dev, panel, &dt);
	}

	connector_type = desc->connector_type;
	/* Catch common mistakes for panels. */
	switch (connector_type) {
	case 0:
		dev_warn(dev, "Specify missing connector_type\n");
		connector_type = DRM_MODE_CONNECTOR_DPI;
		break;
	case DRM_MODE_CONNECTOR_LVDS:
		WARN_ON(desc->bus_flags &
			~(DRM_BUS_FLAG_DE_LOW |
			  DRM_BUS_FLAG_DE_HIGH |
			  DRM_BUS_FLAG_DATA_MSB_TO_LSB |
			  DRM_BUS_FLAG_DATA_LSB_TO_MSB));
		WARN_ON(desc->bus_format != MEDIA_BUS_FMT_RGB666_1X7X3_SPWG &&
			desc->bus_format != MEDIA_BUS_FMT_RGB888_1X7X4_SPWG &&
			desc->bus_format != MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA);
		WARN_ON(desc->bus_format == MEDIA_BUS_FMT_RGB666_1X7X3_SPWG &&
			desc->bpc != 6);
		WARN_ON((desc->bus_format == MEDIA_BUS_FMT_RGB888_1X7X4_SPWG ||
			 desc->bus_format == MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA) &&
			desc->bpc != 8);
		break;
	case DRM_MODE_CONNECTOR_eDP:
		dev_warn(dev, "eDP panels moved to panel-edp\n");
		err = -EINVAL;
		goto free_ddc;
	case DRM_MODE_CONNECTOR_DSI:
		if (desc->bpc != 6 && desc->bpc != 8)
			dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc);
		break;
	case DRM_MODE_CONNECTOR_DPI:
		bus_flags = DRM_BUS_FLAG_DE_LOW |
			    DRM_BUS_FLAG_DE_HIGH |
			    DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE |
			    DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
			    DRM_BUS_FLAG_DATA_MSB_TO_LSB |
			    DRM_BUS_FLAG_DATA_LSB_TO_MSB |
			    DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE |
			    DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE;
		if (desc->bus_flags & ~bus_flags)
			dev_warn(dev, "Unexpected bus_flags(%d)\n", desc->bus_flags & ~bus_flags);
		if (!(desc->bus_flags & bus_flags))
			dev_warn(dev, "Specify missing bus_flags\n");
		if (desc->bus_format == 0)
			dev_warn(dev, "Specify missing bus_format\n");
		if (desc->bpc != 6 && desc->bpc != 8)
			dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc);
		break;
	default:
		dev_warn(dev, "Specify a valid connector_type: %d\n", desc->connector_type);
		connector_type = DRM_MODE_CONNECTOR_DPI;
		break;
	}

	dev_set_drvdata(dev, panel);

	/*
	 * We use runtime PM for prepare / unprepare since those power the panel
	 * on and off and those can be very slow operations. This is important
	 * to optimize powering the panel on briefly to read the EDID before
	 * fully enabling the panel.
	 */
	pm_runtime_enable(dev);
	pm_runtime_set_autosuspend_delay(dev, 1000);
	pm_runtime_use_autosuspend(dev);

	drm_panel_init(&panel->base, dev, &panel_simple_funcs, connector_type);

	err = drm_panel_of_backlight(&panel->base);
	if (err)
		goto disable_pm_runtime;

	drm_panel_add(&panel->base);

	return 0;

disable_pm_runtime:
	pm_runtime_dont_use_autosuspend(dev);
	pm_runtime_disable(dev);
free_ddc:
	if (panel->ddc)
		put_device(&panel->ddc->dev);

	return err;
}

static int panel_simple_remove(struct device *dev)
{
	struct panel_simple *panel = dev_get_drvdata(dev);

	drm_panel_remove(&panel->base);
	drm_panel_disable(&panel->base);
	drm_panel_unprepare(&panel->base);

	pm_runtime_dont_use_autosuspend(dev);
	pm_runtime_disable(dev);
	if (panel->ddc)
		put_device(&panel->ddc->dev);

	return 0;
}

static void panel_simple_shutdown(struct device *dev)
{
	struct panel_simple *panel = dev_get_drvdata(dev);

	drm_panel_disable(&panel->base);
	drm_panel_unprepare(&panel->base);
}

static const struct drm_display_mode ampire_am_1280800n3tzqw_t00h_mode = {
	.clock = 71100,
	.hdisplay = 1280,
	.hsync_start = 1280 + 40,
	.hsync_end = 1280 + 40 + 80,
	.htotal = 1280 + 40 + 80 + 40,
	.vdisplay = 800,
	.vsync_start = 800 + 3,
	.vsync_end = 800 + 3 + 10,
	.vtotal = 800 + 3 + 10 + 10,
	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};

static const struct panel_desc ampire_am_1280800n3tzqw_t00h = {
	.modes = &ampire_am_1280800n3tzqw_t00h_mode,
	.num_modes = 1,
	.bpc = 6,
	.size = {
		.width = 217,
		.height = 136,
	},
	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
	.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

static const struct drm_display_mode ampire_am_480272h3tmqw_t01h_mode = {
	.clock = 9000,
	.hdisplay = 480,
	.hsync_start = 480 + 2,
	.hsync_end = 480 + 2 + 41,
	.htotal = 480 + 2 + 41 + 2,
	.vdisplay = 272,
	.vsync_start = 272 + 2,
	.vsync_end = 272 + 2 + 10,
	.vtotal = 272 + 2 + 10 + 2,
	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};

static const struct panel_desc ampire_am_480272h3tmqw_t01h = {
	.modes = &ampire_am_480272h3tmqw_t01h_mode,
	.num_modes = 1,
	.bpc = 8,
	.size = {
		.width = 105,
		.height = 67,
	},
	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
};

static const struct drm_display_mode ampire_am800480r3tmqwa1h_mode = {
	.clock = 33333,
	.hdisplay = 800,
	.hsync_start = 800 + 0,
	.hsync_end = 800 + 0 + 255,
	.htotal = 800 + 0 + 255 + 0,
	.vdisplay = 480,
	.vsync_start = 480 + 2,
	.vsync_end = 480 + 2 + 45,
	.vtotal = 480 + 2 + 45 + 0,
	.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};

static const struct panel_desc ampire_am800480r3tmqwa1h = {
	.modes = &ampire_am800480r3tmqwa1h_mode,
	.num_modes = 1,
	.bpc = 6,
	.size = {
		.width = 152,
		.height = 91,
	},
	.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
};

static const struct display_timing santek_st0700i5y_rbslw_f_timing = {
	.pixelclock = { 26400000, 33300000, 46800000 },
	.hactive = { 800, 800, 800 },
	.hfront_porch = { 16, 210, 354 },
	.hback_porch = { 45, 36, 6 },
	.hsync_len = { 1, 10, 40 },
	.vactive = { 480, 480, 480 },
	.vfront_porch = { 7, 22, 147 },
	.vback_porch = { 22, 13, 3 },
	.vsync_len = { 1, 10, 20 },
	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
		DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE
};

static const struct panel_desc armadeus_st0700_adapt = {
	.timings = &santek_st0700i5y_rbslw_f_timing,
	.num_timings = 1,
	.bpc = 6,
	.size = {
		.width = 154,
		.height = 86,
	},
	.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
};

static const struct drm_display_mode auo_b101aw03_mode = {
	.clock = 51450,
	.hdisplay = 1024,
	.hsync_start = 1024 + 156,
	.hsync_end = 1024 + 156 + 8,
	.htotal = 1024 + 156 + 8 + 156,
	.vdisplay = 600,
	.vsync_start = 600 + 16,
	.vsync_end = 600 + 16 + 6,
	.vtotal = 600 + 16 + 6 + 16,
};

static const struct panel_desc auo_b101aw03 = {
	.modes = &auo_b101aw03_mode,
	.num_modes = 1,
	.bpc = 6,
	.size = {
		.width = 223,
		.height = 125,
	},
	.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
	.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

static const struct drm_display_mode auo_b101xtn01_mode = {
	.clock = 72000,
	.hdisplay = 1366,
	.hsync_start = 1366 + 20,
	.hsync_end = 1366 + 20 + 70,
	.htotal = 1366 + 20 + 70,
	.vdisplay = 768,
	.vsync_start = 768 + 14,
	.vsync_end = 768 + 14 + 42,
	.vtotal = 768 + 14 + 42,
	.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
};

static const struct panel_desc auo_b101xtn01 = {
	.modes = &auo_b101xtn01_mode,
	.num_modes = 1,
	.bpc = 6,
	.size = {
		.width = 223,
		.height = 125,
	},
};

static const struct display_timing auo_g070vvn01_timings = {
	.pixelclock = { 33300000, 34209000, 45000000 },
	.hactive = { 800, 800, 800 },
	.hfront_porch = { 20, 40, 200 },
	.hback_porch = { 87, 40, 1 },
	.hsync_len = { 1, 48, 87 },
	.vactive = { 480, 480, 480 },
	.vfront_porch = { 5, 13, 200 },
	.vback_porch = { 31, 31, 29 },
	.vsync_len = { 1, 1, 3 },
};

static const struct panel_desc auo_g070vvn01 = {
	.timings = &auo_g070vvn01_timings,
	.num_timings = 1,
	.bpc = 8,
	.size = {
		.width = 152,
		.height = 91,
	},
	.delay = {
		.prepare = 200,
		.enable = 50,
		.disable = 50,
		.unprepare = 1000,
	},
};

static const struct drm_display_mode auo_g101evn010_mode = {
	.clock = 68930,
	.hdisplay = 1280,
	.hsync_start = 1280 + 82,
	.hsync_end = 1280 + 82 + 2,
	.htotal = 1280 + 82 + 2 + 84,
	.vdisplay = 800,
	.vsync_start = 800 + 8,
	.vsync_end = 800 + 8 + 2,
	.vtotal = 800 + 8 + 2 + 6,
};

static const struct panel_desc auo_g101evn010 = {
	.modes = &auo_g101evn010_mode,
	.num_modes = 1,
	.bpc = 6,
	.size = {
		.width = 216,
		.height = 135,
	},
	.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
	.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

static const struct drm_display_mode auo_g104sn02_mode = {
	.clock = 40000,
	.hdisplay = 800,
	.hsync_start = 800 + 40,
	.hsync_end = 800 + 40 + 216,
	.htotal = 800 + 40 + 216 + 128,
	.vdisplay = 600,
	.vsync_start = 600 + 10,
	.vsync_end = 600 + 10 + 35,
	.vtotal = 600 + 10 + 35 + 2,
};

static const struct panel_desc auo_g104sn02 = {
	.modes = &auo_g104sn02_mode,
	.num_modes = 1,
	.bpc = 8,
	.size = {
		.width = 211,
		.height = 158,
	},
	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
	.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

static const struct drm_display_mode auo_g121ean01_mode = {
	.clock = 66700,
	.hdisplay = 1280,
	.hsync_start = 1280 + 58,
	.hsync_end = 1280 + 58 + 8,
	.htotal = 1280 + 58 + 8 + 70,
	.vdisplay = 800,
	.vsync_start = 800 + 6,
	.vsync_end = 800 + 6 + 4,
	.vtotal = 800 + 6 + 4 + 10,
};

static const struct panel_desc auo_g121ean01 = {
	.modes = &auo_g121ean01_mode,
	.num_modes = 1,
	.bpc = 8,
	.size = {
		.width = 261,
		.height = 163,
	},
	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
	.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

static const struct display_timing auo_g133han01_timings = {
	.pixelclock = { 134000000, 141200000, 149000000 },
	.hactive = { 1920, 1920, 1920 },
	.hfront_porch = { 39, 58, 77 },
	.hback_porch = { 59, 88, 117 },
	.hsync_len = { 28, 42, 56 },
	.vactive = { 1080, 1080, 1080 },
	.vfront_porch = { 3, 8, 11 },
	.vback_porch = { 5, 14, 19 },
	.vsync_len = { 4, 14, 19 },
};

static const struct panel_desc auo_g133han01 = {
	.timings = &auo_g133han01_timings,
	.num_timings = 1,
	.bpc = 8,
	.size = {
		.width = 293,
		.height = 165,
	},
	.delay = {
		.prepare = 200,
		.enable = 50,
		.disable = 50,
		.unprepare = 1000,
	},
	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
	.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

static const struct drm_display_mode auo_g156xtn01_mode = {
	.clock = 76000,
	.hdisplay = 1366,
	.hsync_start = 1366 + 33,
	.hsync_end = 1366 + 33 + 67,
	.htotal = 1560,
	.vdisplay = 768,
	.vsync_start = 768 + 4,
	.vsync_end = 768 + 4 + 4,
	.vtotal = 806,
};

static const struct panel_desc auo_g156xtn01 = {
	.modes = &auo_g156xtn01_mode,
	.num_modes = 1,
	.bpc = 8,