[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / panel / 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/backlight.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>

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

struct panel_desc {
	const struct drm_display_mode *modes;
	unsigned int num_modes;

	struct {
		unsigned int width;
		unsigned int height;
	} size;
};

struct panel_simple {
	struct drm_panel base;
	bool enabled;

	const struct panel_desc *desc;

	struct backlight_device *backlight;
	struct regulator *supply;
	struct i2c_adapter *ddc;

	struct gpio_desc *enable_gpio;
};

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

static int panel_simple_get_fixed_modes(struct panel_simple *panel)
{
	struct drm_connector *connector = panel->base.connector;
	struct drm_device *drm = panel->base.drm;
	struct drm_display_mode *mode;
	unsigned int i, num = 0;

	if (!panel->desc)
		return 0;

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

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

		drm_mode_set_name(mode);

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

	connector->display_info.width_mm = panel->desc->size.width;
	connector->display_info.height_mm = panel->desc->size.height;

	return num;
}

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

	if (!p->enabled)
		return 0;

	if (p->backlight) {
		p->backlight->props.power = FB_BLANK_POWERDOWN;
		backlight_update_status(p->backlight);
	}

	if (p->enable_gpio)
		gpiod_set_value_cansleep(p->enable_gpio, 0);

	regulator_disable(p->supply);
	p->enabled = false;

	return 0;
}

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

	if (p->enabled)
		return 0;

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

	if (p->enable_gpio)
		gpiod_set_value_cansleep(p->enable_gpio, 1);

	if (p->backlight) {
		p->backlight->props.power = FB_BLANK_UNBLANK;
		backlight_update_status(p->backlight);
	}

	p->enabled = true;

	return 0;
}

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

	/* probe EDID if a DDC bus is available */
	if (p->ddc) {
		struct edid *edid = drm_get_edid(panel->connector, p->ddc);
		drm_mode_connector_update_edid_property(panel->connector, edid);
		if (edid) {
			num += drm_add_edid_modes(panel->connector, edid);
			kfree(edid);
		}
	}

	/* add hard-coded panel modes */
	num += panel_simple_get_fixed_modes(p);

	return num;
}

static const struct drm_panel_funcs panel_simple_funcs = {
	.disable = panel_simple_disable,
	.enable = panel_simple_enable,
	.get_modes = panel_simple_get_modes,
};

static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
{
	struct device_node *backlight, *ddc;
	struct panel_simple *panel;
	int err;

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

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

		panel->enable_gpio = NULL;
	} else {
		err = gpiod_direction_output(panel->enable_gpio, 0);
		if (err < 0) {
			dev_err(dev, "failed to setup GPIO: %d\n", err);
			return err;
		}
	}

	backlight = of_parse_phandle(dev->of_node, "backlight", 0);
	if (backlight) {
		panel->backlight = of_find_backlight_by_node(backlight);
		of_node_put(backlight);

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

	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) {
			err = -EPROBE_DEFER;
			goto free_backlight;
		}
	}

	drm_panel_init(&panel->base);
	panel->base.dev = dev;
	panel->base.funcs = &panel_simple_funcs;

	err = drm_panel_add(&panel->base);
	if (err < 0)
		goto free_ddc;

	dev_set_drvdata(dev, panel);

	return 0;

free_ddc:
	if (panel->ddc)
		put_device(&panel->ddc->dev);
free_backlight:
	if (panel->backlight)
		put_device(&panel->backlight->dev);

	return err;
}

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

	drm_panel_detach(&panel->base);
	drm_panel_remove(&panel->base);

	panel_simple_disable(&panel->base);

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

	if (panel->backlight)
		put_device(&panel->backlight->dev);

	return 0;
}

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,
	.vrefresh = 60,
};

static const struct panel_desc auo_b101aw03 = {
	.modes = &auo_b101aw03_mode,
	.num_modes = 1,
	.size = {
		.width = 223,
		.height = 125,
	},
};

static const struct drm_display_mode chunghwa_claa101wa01a_mode = {
	.clock = 72070,
	.hdisplay = 1366,
	.hsync_start = 1366 + 58,
	.hsync_end = 1366 + 58 + 58,
	.htotal = 1366 + 58 + 58 + 58,
	.vdisplay = 768,
	.vsync_start = 768 + 4,
	.vsync_end = 768 + 4 + 4,
	.vtotal = 768 + 4 + 4 + 4,
	.vrefresh = 60,
};

static const struct panel_desc chunghwa_claa101wa01a = {
	.modes = &chunghwa_claa101wa01a_mode,
	.num_modes = 1,
	.size = {
		.width = 220,
		.height = 120,
	},
};

static const struct drm_display_mode chunghwa_claa101wb01_mode = {
	.clock = 69300,
	.hdisplay = 1366,
	.hsync_start = 1366 + 48,
	.hsync_end = 1366 + 48 + 32,
	.htotal = 1366 + 48 + 32 + 20,
	.vdisplay = 768,
	.vsync_start = 768 + 16,
	.vsync_end = 768 + 16 + 8,
	.vtotal = 768 + 16 + 8 + 16,
	.vrefresh = 60,
};

static const struct panel_desc chunghwa_claa101wb01 = {
	.modes = &chunghwa_claa101wb01_mode,
	.num_modes = 1,
	.size = {
		.width = 223,
		.height = 125,
	},
};

static const struct drm_display_mode edt_etm0700g0dh6_mode = {
	.clock = 33260,
	.hdisplay = 800,
	.hsync_start = 800 + 40,
	.hsync_end = 800 + 40 + 128,
	.htotal = 800 + 40 + 128 + 88,
	.vdisplay = 480,
	.vsync_start = 480 + 10,
	.vsync_end = 480 + 10 + 2,
	.vtotal = 480 + 10 + 2 + 33,
	.vrefresh = 60,
	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
};

static const struct panel_desc edt_etm0700g0dh6 = {
	.modes = &edt_etm0700g0dh6_mode,
	.num_modes = 1,
	.size = {
		.width = 152,
		.height = 91,
	},
};

static const struct drm_display_mode lg_lp129qe_mode = {
	.clock = 285250,
	.hdisplay = 2560,
	.hsync_start = 2560 + 48,
	.hsync_end = 2560 + 48 + 32,
	.htotal = 2560 + 48 + 32 + 80,
	.vdisplay = 1700,
	.vsync_start = 1700 + 3,
	.vsync_end = 1700 + 3 + 10,
	.vtotal = 1700 + 3 + 10 + 36,
	.vrefresh = 60,
};

static const struct panel_desc lg_lp129qe = {
	.modes = &lg_lp129qe_mode,
	.num_modes = 1,
	.size = {
		.width = 272,
		.height = 181,
	},
};

static const struct drm_display_mode samsung_ltn101nt05_mode = {
	.clock = 54030,
	.hdisplay = 1024,
	.hsync_start = 1024 + 24,
	.hsync_end = 1024 + 24 + 136,
	.htotal = 1024 + 24 + 136 + 160,
	.vdisplay = 600,
	.vsync_start = 600 + 3,
	.vsync_end = 600 + 3 + 6,
	.vtotal = 600 + 3 + 6 + 61,
	.vrefresh = 60,
};

static const struct panel_desc samsung_ltn101nt05 = {
	.modes = &samsung_ltn101nt05_mode,
	.num_modes = 1,
	.size = {
		.width = 1024,
		.height = 600,
	},
};

static const struct of_device_id platform_of_match[] = {
	{
		.compatible = "auo,b101aw03",
		.data = &auo_b101aw03,
	}, {
		.compatible = "chunghwa,claa101wa01a",
		.data = &chunghwa_claa101wa01a
	}, {
		.compatible = "chunghwa,claa101wb01",
		.data = &chunghwa_claa101wb01
	}, {
		.compatible = "edt,et070080dh6",
		.data = &edt_etm0700g0dh6,
	}, {
		.compatible = "edt,etm0700g0dh6",
		.data = &edt_etm0700g0dh6,
	}, {
		.compatible = "lg,lp129qe",
		.data = &lg_lp129qe,
	}, {
		.compatible = "samsung,ltn101nt05",
		.data = &samsung_ltn101nt05,
	}, {
		.compatible = "simple-panel",
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(of, platform_of_match);

static int panel_simple_platform_probe(struct platform_device *pdev)
{
	const struct of_device_id *id;

	id = of_match_node(platform_of_match, pdev->dev.of_node);
	if (!id)
		return -ENODEV;

	return panel_simple_probe(&pdev->dev, id->data);
}

static int panel_simple_platform_remove(struct platform_device *pdev)
{
	return panel_simple_remove(&pdev->dev);
}

static struct platform_driver panel_simple_platform_driver = {
	.driver = {
		.name = "panel-simple",
		.owner = THIS_MODULE,
		.of_match_table = platform_of_match,
	},
	.probe = panel_simple_platform_probe,
	.remove = panel_simple_platform_remove,
};

struct panel_desc_dsi {
	struct panel_desc desc;

	unsigned long flags;
	enum mipi_dsi_pixel_format format;
	unsigned int lanes;
};

static const struct drm_display_mode lg_ld070wx3_sl01_mode = {
	.clock = 71000,
	.hdisplay = 800,
	.hsync_start = 800 + 32,
	.hsync_end = 800 + 32 + 1,
	.htotal = 800 + 32 + 1 + 57,
	.vdisplay = 1280,
	.vsync_start = 1280 + 28,
	.vsync_end = 1280 + 28 + 1,
	.vtotal = 1280 + 28 + 1 + 14,
	.vrefresh = 60,
};

static const struct panel_desc_dsi lg_ld070wx3_sl01 = {
	.desc = {
		.modes = &lg_ld070wx3_sl01_mode,
		.num_modes = 1,
		.size = {
			.width = 94,
			.height = 151,
		},
	},
	.flags = MIPI_DSI_MODE_VIDEO,
	.format = MIPI_DSI_FMT_RGB888,
	.lanes = 4,
};

static const struct drm_display_mode lg_lh500wx1_sd03_mode = {
	.clock = 67000,
	.hdisplay = 720,
	.hsync_start = 720 + 12,
	.hsync_end = 720 + 12 + 4,
	.htotal = 720 + 12 + 4 + 112,
	.vdisplay = 1280,
	.vsync_start = 1280 + 8,
	.vsync_end = 1280 + 8 + 4,
	.vtotal = 1280 + 8 + 4 + 12,
	.vrefresh = 60,
};

static const struct panel_desc_dsi lg_lh500wx1_sd03 = {
	.desc = {
		.modes = &lg_lh500wx1_sd03_mode,
		.num_modes = 1,
		.size = {
			.width = 62,
			.height = 110,
		},
	},
	.flags = MIPI_DSI_MODE_VIDEO,
	.format = MIPI_DSI_FMT_RGB888,
	.lanes = 4,
};

static const struct drm_display_mode panasonic_vvx10f004b00_mode = {
	.clock = 157200,
	.hdisplay = 1920,
	.hsync_start = 1920 + 154,
	.hsync_end = 1920 + 154 + 16,
	.htotal = 1920 + 154 + 16 + 32,
	.vdisplay = 1200,
	.vsync_start = 1200 + 17,
	.vsync_end = 1200 + 17 + 2,
	.vtotal = 1200 + 17 + 2 + 16,
	.vrefresh = 60,
};

static const struct panel_desc_dsi panasonic_vvx10f004b00 = {
	.desc = {
		.modes = &panasonic_vvx10f004b00_mode,
		.num_modes = 1,
		.size = {
			.width = 217,
			.height = 136,
		},
	},
	.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
	.format = MIPI_DSI_FMT_RGB888,
	.lanes = 4,
};

static const struct of_device_id dsi_of_match[] = {
	{
		.compatible = "lg,ld070wx3-sl01",
		.data = &lg_ld070wx3_sl01
	}, {
		.compatible = "lg,lh500wx1-sd03",
		.data = &lg_lh500wx1_sd03
	}, {
		.compatible = "panasonic,vvx10f004b00",
		.data = &panasonic_vvx10f004b00
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(of, dsi_of_match);

static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
{
	const struct panel_desc_dsi *desc;
	const struct of_device_id *id;
	int err;

	id = of_match_node(dsi_of_match, dsi->dev.of_node);
	if (!id)
		return -ENODEV;

	desc = id->data;

	err = panel_simple_probe(&dsi->dev, &desc->desc);
	if (err < 0)
		return err;

	dsi->mode_flags = desc->flags;
	dsi->format = desc->format;
	dsi->lanes = desc->lanes;

	return mipi_dsi_attach(dsi);
}

static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
{
	int err;

	err = mipi_dsi_detach(dsi);
	if (err < 0)
		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);

	return panel_simple_remove(&dsi->dev);
}

static struct mipi_dsi_driver panel_simple_dsi_driver = {
	.driver = {
		.name = "panel-simple-dsi",
		.owner = THIS_MODULE,
		.of_match_table = dsi_of_match,
	},
	.probe = panel_simple_dsi_probe,
	.remove = panel_simple_dsi_remove,
};

static int __init panel_simple_init(void)
{
	int err;

	err = platform_driver_register(&panel_simple_platform_driver);
	if (err < 0)
		return err;

	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
		err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
		if (err < 0)
			return err;
	}

	return 0;
}
module_init(panel_simple_init);

static void __exit panel_simple_exit(void)
{
	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
		mipi_dsi_driver_unregister(&panel_simple_dsi_driver);

	platform_driver_unregister(&panel_simple_platform_driver);
}
module_exit(panel_simple_exit);

MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("DRM Driver for Simple Panels");
MODULE_LICENSE("GPL and additional rights");
Commit	Line	Data
280921de TR	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/backlight.h>
cfdf0549	25	#include <linux/gpio/consumer.h>
280921de	26	#include <linux/module.h>
280921de TR	27	#include <linux/of_platform.h>
	28	#include <linux/platform_device.h>
	29	#include <linux/regulator/consumer.h>
	30
	31	#include <drm/drmP.h>
	32	#include <drm/drm_crtc.h>
210fcd9d	33	#include <drm/drm_mipi_dsi.h>
280921de TR	34	#include <drm/drm_panel.h>
	35
	36	struct panel_desc {
	37	const struct drm_display_mode *modes;
	38	unsigned int num_modes;
	39
	40	struct {
	41	unsigned int width;
	42	unsigned int height;
	43	} size;
	44	};
	45
280921de TR	46	struct panel_simple {
	47	struct drm_panel base;
	48	bool enabled;
	49
	50	const struct panel_desc *desc;
	51
	52	struct backlight_device *backlight;
	53	struct regulator *supply;
	54	struct i2c_adapter *ddc;
	55
cfdf0549	56	struct gpio_desc *enable_gpio;
280921de TR	57	};
	58
	59	static inline struct panel_simple to_panel_simple(struct drm_panel panel)
	60	{
	61	return container_of(panel, struct panel_simple, base);
	62	}
	63
	64	static int panel_simple_get_fixed_modes(struct panel_simple *panel)
	65	{
	66	struct drm_connector *connector = panel->base.connector;
	67	struct drm_device *drm = panel->base.drm;
	68	struct drm_display_mode *mode;
	69	unsigned int i, num = 0;
	70
	71	if (!panel->desc)
	72	return 0;
	73
	74	for (i = 0; i < panel->desc->num_modes; i++) {
	75	const struct drm_display_mode *m = &panel->desc->modes[i];
	76
	77	mode = drm_mode_duplicate(drm, m);
	78	if (!mode) {
	79	dev_err(drm->dev, "failed to add mode %ux%u@%u\n",
	80	m->hdisplay, m->vdisplay, m->vrefresh);
	81	continue;
	82	}
	83
	84	drm_mode_set_name(mode);
	85
	86	drm_mode_probed_add(connector, mode);
	87	num++;
	88	}
	89
	90	connector->display_info.width_mm = panel->desc->size.width;
	91	connector->display_info.height_mm = panel->desc->size.height;
	92
	93	return num;
	94	}
	95
	96	static int panel_simple_disable(struct drm_panel *panel)
	97	{
	98	struct panel_simple *p = to_panel_simple(panel);
	99
	100	if (!p->enabled)
	101	return 0;
	102
	103	if (p->backlight) {
	104	p->backlight->props.power = FB_BLANK_POWERDOWN;
	105	backlight_update_status(p->backlight);
	106	}
	107
cfdf0549	108	if (p->enable_gpio)
15c1a919	109	gpiod_set_value_cansleep(p->enable_gpio, 0);
280921de TR	110
	111	regulator_disable(p->supply);
	112	p->enabled = false;
	113
	114	return 0;
	115	}
	116
	117	static int panel_simple_enable(struct drm_panel *panel)
	118	{
	119	struct panel_simple *p = to_panel_simple(panel);
	120	int err;
	121
	122	if (p->enabled)
	123	return 0;
	124
	125	err = regulator_enable(p->supply);
	126	if (err < 0) {
	127	dev_err(panel->dev, "failed to enable supply: %d\n", err);
	128	return err;
	129	}
	130
cfdf0549	131	if (p->enable_gpio)
15c1a919	132	gpiod_set_value_cansleep(p->enable_gpio, 1);
280921de TR	133
	134	if (p->backlight) {
	135	p->backlight->props.power = FB_BLANK_UNBLANK;
	136	backlight_update_status(p->backlight);
	137	}
	138
	139	p->enabled = true;
	140
	141	return 0;
	142	}
	143
	144	static int panel_simple_get_modes(struct drm_panel *panel)
	145	{
	146	struct panel_simple *p = to_panel_simple(panel);
	147	int num = 0;
	148
	149	/* probe EDID if a DDC bus is available */
	150	if (p->ddc) {
	151	struct edid *edid = drm_get_edid(panel->connector, p->ddc);
70bf6878	152	drm_mode_connector_update_edid_property(panel->connector, edid);
280921de TR	153	if (edid) {
	154	num += drm_add_edid_modes(panel->connector, edid);
	155	kfree(edid);
	156	}
	157	}
	158
	159	/* add hard-coded panel modes */
	160	num += panel_simple_get_fixed_modes(p);
	161
	162	return num;
	163	}
	164
	165	static const struct drm_panel_funcs panel_simple_funcs = {
	166	.disable = panel_simple_disable,
	167	.enable = panel_simple_enable,
	168	.get_modes = panel_simple_get_modes,
	169	};
	170
	171	static int panel_simple_probe(struct device dev, const struct panel_desc desc)
	172	{
	173	struct device_node backlight, ddc;
	174	struct panel_simple *panel;
280921de TR	175	int err;
	176
	177	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
	178	if (!panel)
	179	return -ENOMEM;
	180
	181	panel->enabled = false;
	182	panel->desc = desc;
	183
	184	panel->supply = devm_regulator_get(dev, "power");
	185	if (IS_ERR(panel->supply))
	186	return PTR_ERR(panel->supply);
	187
cfdf0549 AC	188	panel->enable_gpio = devm_gpiod_get(dev, "enable");
	189	if (IS_ERR(panel->enable_gpio)) {
	190	err = PTR_ERR(panel->enable_gpio);
	191	if (err != -ENOENT) {
	192	dev_err(dev, "failed to request GPIO: %d\n", err);
280921de TR	193	return err;
	194	}
	195
cfdf0549 AC	196	panel->enable_gpio = NULL;
	197	} else {
	198	err = gpiod_direction_output(panel->enable_gpio, 0);
280921de	199	if (err < 0) {
cfdf0549 AC	200	dev_err(dev, "failed to setup GPIO: %d\n", err);
cfdf0549 AC	201	return err;
280921de TR	202	}
	203	}
	204
	205	backlight = of_parse_phandle(dev->of_node, "backlight", 0);
	206	if (backlight) {
	207	panel->backlight = of_find_backlight_by_node(backlight);
	208	of_node_put(backlight);
	209
cfdf0549 AC	210	if (!panel->backlight)
cfdf0549 AC	211	return -EPROBE_DEFER;
280921de TR	212	}
	213
	214	ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
	215	if (ddc) {
	216	panel->ddc = of_find_i2c_adapter_by_node(ddc);
	217	of_node_put(ddc);
	218
	219	if (!panel->ddc) {
	220	err = -EPROBE_DEFER;
	221	goto free_backlight;
	222	}
	223	}
	224
	225	drm_panel_init(&panel->base);
	226	panel->base.dev = dev;
	227	panel->base.funcs = &panel_simple_funcs;
	228
	229	err = drm_panel_add(&panel->base);
	230	if (err < 0)
	231	goto free_ddc;
	232
	233	dev_set_drvdata(dev, panel);
	234
	235	return 0;
	236
	237	free_ddc:
	238	if (panel->ddc)
	239	put_device(&panel->ddc->dev);
	240	free_backlight:
	241	if (panel->backlight)
	242	put_device(&panel->backlight->dev);
280921de TR	243
	244	return err;
	245	}
	246
	247	static int panel_simple_remove(struct device *dev)
	248	{
	249	struct panel_simple *panel = dev_get_drvdata(dev);
	250
	251	drm_panel_detach(&panel->base);
	252	drm_panel_remove(&panel->base);
	253
	254	panel_simple_disable(&panel->base);
	255
	256	if (panel->ddc)
	257	put_device(&panel->ddc->dev);
	258
	259	if (panel->backlight)
	260	put_device(&panel->backlight->dev);
	261
280921de TR	262	return 0;
	263	}
	264
	265	static const struct drm_display_mode auo_b101aw03_mode = {
	266	.clock = 51450,
	267	.hdisplay = 1024,
	268	.hsync_start = 1024 + 156,
	269	.hsync_end = 1024 + 156 + 8,
	270	.htotal = 1024 + 156 + 8 + 156,
	271	.vdisplay = 600,
	272	.vsync_start = 600 + 16,
	273	.vsync_end = 600 + 16 + 6,
	274	.vtotal = 600 + 16 + 6 + 16,
	275	.vrefresh = 60,
	276	};
	277
	278	static const struct panel_desc auo_b101aw03 = {
	279	.modes = &auo_b101aw03_mode,
	280	.num_modes = 1,
	281	.size = {
	282	.width = 223,
	283	.height = 125,
	284	},
	285	};
	286
4c930757 SW	287	static const struct drm_display_mode chunghwa_claa101wa01a_mode = {
	288	.clock = 72070,
	289	.hdisplay = 1366,
	290	.hsync_start = 1366 + 58,
	291	.hsync_end = 1366 + 58 + 58,
	292	.htotal = 1366 + 58 + 58 + 58,
	293	.vdisplay = 768,
	294	.vsync_start = 768 + 4,
	295	.vsync_end = 768 + 4 + 4,
	296	.vtotal = 768 + 4 + 4 + 4,
	297	.vrefresh = 60,
	298	};
	299
	300	static const struct panel_desc chunghwa_claa101wa01a = {
	301	.modes = &chunghwa_claa101wa01a_mode,
	302	.num_modes = 1,
	303	.size = {
	304	.width = 220,
	305	.height = 120,
	306	},
	307	};
	308
280921de TR	309	static const struct drm_display_mode chunghwa_claa101wb01_mode = {
	310	.clock = 69300,
	311	.hdisplay = 1366,
	312	.hsync_start = 1366 + 48,
	313	.hsync_end = 1366 + 48 + 32,
	314	.htotal = 1366 + 48 + 32 + 20,
	315	.vdisplay = 768,
	316	.vsync_start = 768 + 16,
	317	.vsync_end = 768 + 16 + 8,
	318	.vtotal = 768 + 16 + 8 + 16,
	319	.vrefresh = 60,
	320	};
	321
	322	static const struct panel_desc chunghwa_claa101wb01 = {
	323	.modes = &chunghwa_claa101wb01_mode,
	324	.num_modes = 1,
	325	.size = {
	326	.width = 223,
	327	.height = 125,
	328	},
	329	};
	330
fff5de45 PZ	331	static const struct drm_display_mode edt_etm0700g0dh6_mode = {
	332	.clock = 33260,
	333	.hdisplay = 800,
	334	.hsync_start = 800 + 40,
	335	.hsync_end = 800 + 40 + 128,
	336	.htotal = 800 + 40 + 128 + 88,
	337	.vdisplay = 480,
	338	.vsync_start = 480 + 10,
	339	.vsync_end = 480 + 10 + 2,
	340	.vtotal = 480 + 10 + 2 + 33,
	341	.vrefresh = 60,
	342	.flags = DRM_MODE_FLAG_NHSYNC \| DRM_MODE_FLAG_NVSYNC,
	343	};
	344
	345	static const struct panel_desc edt_etm0700g0dh6 = {
	346	.modes = &edt_etm0700g0dh6_mode,
	347	.num_modes = 1,
	348	.size = {
	349	.width = 152,
	350	.height = 91,
	351	},
	352	};
	353
ec7c5653 TR	354	static const struct drm_display_mode lg_lp129qe_mode = {
	355	.clock = 285250,
	356	.hdisplay = 2560,
	357	.hsync_start = 2560 + 48,
	358	.hsync_end = 2560 + 48 + 32,
	359	.htotal = 2560 + 48 + 32 + 80,
	360	.vdisplay = 1700,
	361	.vsync_start = 1700 + 3,
	362	.vsync_end = 1700 + 3 + 10,
	363	.vtotal = 1700 + 3 + 10 + 36,
	364	.vrefresh = 60,
	365	};
	366
	367	static const struct panel_desc lg_lp129qe = {
	368	.modes = &lg_lp129qe_mode,
	369	.num_modes = 1,
	370	.size = {
	371	.width = 272,
	372	.height = 181,
	373	},
	374	};
	375
6d54e3d2 MD	376	static const struct drm_display_mode samsung_ltn101nt05_mode = {
	377	.clock = 54030,
	378	.hdisplay = 1024,
	379	.hsync_start = 1024 + 24,
	380	.hsync_end = 1024 + 24 + 136,
	381	.htotal = 1024 + 24 + 136 + 160,
	382	.vdisplay = 600,
	383	.vsync_start = 600 + 3,
	384	.vsync_end = 600 + 3 + 6,
	385	.vtotal = 600 + 3 + 6 + 61,
	386	.vrefresh = 60,
	387	};
	388
	389	static const struct panel_desc samsung_ltn101nt05 = {
	390	.modes = &samsung_ltn101nt05_mode,
	391	.num_modes = 1,
	392	.size = {
	393	.width = 1024,
	394	.height = 600,
	395	},
	396	};
	397
280921de TR	398	static const struct of_device_id platform_of_match[] = {
	399	{
	400	.compatible = "auo,b101aw03",
	401	.data = &auo_b101aw03,
4c930757 SW	402	}, {
	403	.compatible = "chunghwa,claa101wa01a",
	404	.data = &chunghwa_claa101wa01a
280921de TR	405	}, {
	406	.compatible = "chunghwa,claa101wb01",
	407	.data = &chunghwa_claa101wb01
fff5de45 PZ	408	}, {
	409	.compatible = "edt,et070080dh6",
	410	.data = &edt_etm0700g0dh6,
	411	}, {
	412	.compatible = "edt,etm0700g0dh6",
	413	.data = &edt_etm0700g0dh6,
ec7c5653 TR	414	}, {
	415	.compatible = "lg,lp129qe",
	416	.data = &lg_lp129qe,
6d54e3d2 MD	417	}, {
	418	.compatible = "samsung,ltn101nt05",
	419	.data = &samsung_ltn101nt05,
280921de TR	420	}, {
	421	.compatible = "simple-panel",
	422	}, {
	423	/* sentinel */
	424	}
	425	};
	426	MODULE_DEVICE_TABLE(of, platform_of_match);
	427
	428	static int panel_simple_platform_probe(struct platform_device *pdev)
	429	{
	430	const struct of_device_id *id;
	431
	432	id = of_match_node(platform_of_match, pdev->dev.of_node);
	433	if (!id)
	434	return -ENODEV;
	435
	436	return panel_simple_probe(&pdev->dev, id->data);
	437	}
	438
	439	static int panel_simple_platform_remove(struct platform_device *pdev)
	440	{
	441	return panel_simple_remove(&pdev->dev);
	442	}
	443
	444	static struct platform_driver panel_simple_platform_driver = {
	445	.driver = {
	446	.name = "panel-simple",
	447	.owner = THIS_MODULE,
	448	.of_match_table = platform_of_match,
	449	},
	450	.probe = panel_simple_platform_probe,
	451	.remove = panel_simple_platform_remove,
	452	};
	453
210fcd9d TR	454	struct panel_desc_dsi {
	455	struct panel_desc desc;
	456
462658b8	457	unsigned long flags;
210fcd9d TR	458	enum mipi_dsi_pixel_format format;
	459	unsigned int lanes;
	460	};
	461
712ac1ba AC	462	static const struct drm_display_mode lg_ld070wx3_sl01_mode = {
	463	.clock = 71000,
	464	.hdisplay = 800,
	465	.hsync_start = 800 + 32,
	466	.hsync_end = 800 + 32 + 1,
	467	.htotal = 800 + 32 + 1 + 57,
	468	.vdisplay = 1280,
	469	.vsync_start = 1280 + 28,
	470	.vsync_end = 1280 + 28 + 1,
	471	.vtotal = 1280 + 28 + 1 + 14,
	472	.vrefresh = 60,
	473	};
	474
	475	static const struct panel_desc_dsi lg_ld070wx3_sl01 = {
	476	.desc = {
	477	.modes = &lg_ld070wx3_sl01_mode,
	478	.num_modes = 1,
	479	.size = {
	480	.width = 94,
	481	.height = 151,
	482	},
	483	},
	484	.flags = MIPI_DSI_MODE_VIDEO,
	485	.format = MIPI_DSI_FMT_RGB888,
	486	.lanes = 4,
	487	};
	488
499ce85a AC	489	static const struct drm_display_mode lg_lh500wx1_sd03_mode = {
	490	.clock = 67000,
	491	.hdisplay = 720,
	492	.hsync_start = 720 + 12,
	493	.hsync_end = 720 + 12 + 4,
	494	.htotal = 720 + 12 + 4 + 112,
	495	.vdisplay = 1280,
	496	.vsync_start = 1280 + 8,
	497	.vsync_end = 1280 + 8 + 4,
	498	.vtotal = 1280 + 8 + 4 + 12,
	499	.vrefresh = 60,
	500	};
	501
	502	static const struct panel_desc_dsi lg_lh500wx1_sd03 = {
	503	.desc = {
	504	.modes = &lg_lh500wx1_sd03_mode,
	505	.num_modes = 1,
	506	.size = {
	507	.width = 62,
	508	.height = 110,
	509	},
	510	},
	511	.flags = MIPI_DSI_MODE_VIDEO,
	512	.format = MIPI_DSI_FMT_RGB888,
	513	.lanes = 4,
	514	};
	515
280921de TR	516	static const struct drm_display_mode panasonic_vvx10f004b00_mode = {
	517	.clock = 157200,
	518	.hdisplay = 1920,
	519	.hsync_start = 1920 + 154,
	520	.hsync_end = 1920 + 154 + 16,
	521	.htotal = 1920 + 154 + 16 + 32,
	522	.vdisplay = 1200,
	523	.vsync_start = 1200 + 17,
	524	.vsync_end = 1200 + 17 + 2,
	525	.vtotal = 1200 + 17 + 2 + 16,
	526	.vrefresh = 60,
	527	};
	528
210fcd9d TR	529	static const struct panel_desc_dsi panasonic_vvx10f004b00 = {
	530	.desc = {
	531	.modes = &panasonic_vvx10f004b00_mode,
	532	.num_modes = 1,
	533	.size = {
	534	.width = 217,
	535	.height = 136,
	536	},
280921de	537	},
462658b8	538	.flags = MIPI_DSI_MODE_VIDEO \| MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
210fcd9d TR	539	.format = MIPI_DSI_FMT_RGB888,
	540	.lanes = 4,
	541	};
	542
	543	static const struct of_device_id dsi_of_match[] = {
	544	{
712ac1ba AC	545	.compatible = "lg,ld070wx3-sl01",
	546	.data = &lg_ld070wx3_sl01
	547	}, {
499ce85a AC	548	.compatible = "lg,lh500wx1-sd03",
	549	.data = &lg_lh500wx1_sd03
	550	}, {
210fcd9d TR	551	.compatible = "panasonic,vvx10f004b00",
	552	.data = &panasonic_vvx10f004b00
	553	}, {
	554	/* sentinel */
	555	}
	556	};
	557	MODULE_DEVICE_TABLE(of, dsi_of_match);
	558
	559	static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
	560	{
	561	const struct panel_desc_dsi *desc;
	562	const struct of_device_id *id;
	563	int err;
	564
	565	id = of_match_node(dsi_of_match, dsi->dev.of_node);
	566	if (!id)
	567	return -ENODEV;
	568
	569	desc = id->data;
	570
	571	err = panel_simple_probe(&dsi->dev, &desc->desc);
	572	if (err < 0)
	573	return err;
	574
462658b8	575	dsi->mode_flags = desc->flags;
210fcd9d TR	576	dsi->format = desc->format;
	577	dsi->lanes = desc->lanes;
	578
	579	return mipi_dsi_attach(dsi);
	580	}
	581
	582	static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
	583	{
	584	int err;
	585
	586	err = mipi_dsi_detach(dsi);
	587	if (err < 0)
	588	dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
	589
	590	return panel_simple_remove(&dsi->dev);
	591	}
	592
	593	static struct mipi_dsi_driver panel_simple_dsi_driver = {
	594	.driver = {
	595	.name = "panel-simple-dsi",
	596	.owner = THIS_MODULE,
	597	.of_match_table = dsi_of_match,
	598	},
	599	.probe = panel_simple_dsi_probe,
	600	.remove = panel_simple_dsi_remove,
280921de TR	601	};
	602
	603	static int __init panel_simple_init(void)
	604	{
210fcd9d TR	605	int err;
	606
	607	err = platform_driver_register(&panel_simple_platform_driver);
	608	if (err < 0)
	609	return err;
	610
	611	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
	612	err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
	613	if (err < 0)
	614	return err;
	615	}
	616
	617	return 0;
280921de TR	618	}
	619	module_init(panel_simple_init);
	620
	621	static void __exit panel_simple_exit(void)
	622	{
210fcd9d TR	623	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
	624	mipi_dsi_driver_unregister(&panel_simple_dsi_driver);
	625
280921de TR	626	platform_driver_unregister(&panel_simple_platform_driver);
	627	}
	628	module_exit(panel_simple_exit);
	629
	630	MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
	631	MODULE_DESCRIPTION("DRM Driver for Simple Panels");
	632	MODULE_LICENSE("GPL and additional rights");