[deliverable/linux.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.h>
#include <linux/module.h>
#include <linux/of_gpio.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;
};

/* TODO: convert to gpiod_*() API once it's been merged */
#define GPIO_ACTIVE_LOW	(1 << 0)

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;

	unsigned long enable_gpio_flags;
	int 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 (gpio_is_valid(p->enable_gpio)) {
		if (p->enable_gpio_flags & GPIO_ACTIVE_LOW)
			gpio_set_value(p->enable_gpio, 1);
		else
			gpio_set_value(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 (gpio_is_valid(p->enable_gpio)) {
		if (p->enable_gpio_flags & GPIO_ACTIVE_LOW)
			gpio_set_value(p->enable_gpio, 0);
		else
			gpio_set_value(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);
		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;
	enum of_gpio_flags flags;
	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 = of_get_named_gpio_flags(dev->of_node,
						     "enable-gpios", 0,
						     &flags);
	if (gpio_is_valid(panel->enable_gpio)) {
		unsigned int value;

		if (flags & OF_GPIO_ACTIVE_LOW)
			panel->enable_gpio_flags |= GPIO_ACTIVE_LOW;

		err = gpio_request(panel->enable_gpio, "enable");
		if (err < 0) {
			dev_err(dev, "failed to request GPIO#%u: %d\n",
				panel->enable_gpio, err);
			return err;
		}

		value = (panel->enable_gpio_flags & GPIO_ACTIVE_LOW) != 0;

		err = gpio_direction_output(panel->enable_gpio, value);
		if (err < 0) {
			dev_err(dev, "failed to setup GPIO%u: %d\n",
				panel->enable_gpio, err);
			goto free_gpio;
		}
	}

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

	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);
free_gpio:
	if (gpio_is_valid(panel->enable_gpio))
		gpio_free(panel->enable_gpio);

	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);

	if (gpio_is_valid(panel->enable_gpio))
		gpio_free(panel->enable_gpio);

	regulator_disable(panel->supply);

	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 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 = "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;

	enum mipi_dsi_pixel_format format;
	unsigned int lanes;
};

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,
		},
	},
	.format = MIPI_DSI_FMT_RGB888,
	.lanes = 4,
};

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