[mirror_ubuntu-jammy-kernel.git] / drivers / video / fbdev / omap2 / omapfb / displays / panel-sharp-ls037v7dw01.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * LCD panel driver for Sharp LS037V7DW01
 *
 * Copyright (C) 2013 Texas Instruments
 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
 */

#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/regulator/consumer.h>
#include <video/omapfb_dss.h>

struct panel_drv_data {
	struct omap_dss_device dssdev;
	struct omap_dss_device *in;
	struct regulator *vcc;

	int data_lines;

	struct omap_video_timings videomode;

	struct gpio_desc *resb_gpio;	/* low = reset active min 20 us */
	struct gpio_desc *ini_gpio;	/* high = power on */
	struct gpio_desc *mo_gpio;	/* low = 480x640, high = 240x320 */
	struct gpio_desc *lr_gpio;	/* high = conventional horizontal scanning */
	struct gpio_desc *ud_gpio;	/* high = conventional vertical scanning */
};

static const struct omap_video_timings sharp_ls_timings = {
	.x_res = 480,
	.y_res = 640,

	.pixelclock	= 19200000,

	.hsw		= 2,
	.hfp		= 1,
	.hbp		= 28,

	.vsw		= 1,
	.vfp		= 1,
	.vbp		= 1,

	.vsync_level	= OMAPDSS_SIG_ACTIVE_LOW,
	.hsync_level	= OMAPDSS_SIG_ACTIVE_LOW,
	.data_pclk_edge	= OMAPDSS_DRIVE_SIG_RISING_EDGE,
	.de_level	= OMAPDSS_SIG_ACTIVE_HIGH,
	.sync_pclk_edge	= OMAPDSS_DRIVE_SIG_FALLING_EDGE,
};

#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)

static int sharp_ls_connect(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	if (omapdss_device_is_connected(dssdev))
		return 0;

	r = in->ops.dpi->connect(in, dssdev);
	if (r)
		return r;

	return 0;
}

static void sharp_ls_disconnect(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	if (!omapdss_device_is_connected(dssdev))
		return;

	in->ops.dpi->disconnect(in, dssdev);
}

static int sharp_ls_enable(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	if (!omapdss_device_is_connected(dssdev))
		return -ENODEV;

	if (omapdss_device_is_enabled(dssdev))
		return 0;

	if (ddata->data_lines)
		in->ops.dpi->set_data_lines(in, ddata->data_lines);
	in->ops.dpi->set_timings(in, &ddata->videomode);

	if (ddata->vcc) {
		r = regulator_enable(ddata->vcc);
		if (r != 0)
			return r;
	}

	r = in->ops.dpi->enable(in);
	if (r) {
		regulator_disable(ddata->vcc);
		return r;
	}

	/* wait couple of vsyncs until enabling the LCD */
	msleep(50);

	if (ddata->resb_gpio)
		gpiod_set_value_cansleep(ddata->resb_gpio, 1);

	if (ddata->ini_gpio)
		gpiod_set_value_cansleep(ddata->ini_gpio, 1);

	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;

	return 0;
}

static void sharp_ls_disable(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	if (!omapdss_device_is_enabled(dssdev))
		return;

	if (ddata->ini_gpio)
		gpiod_set_value_cansleep(ddata->ini_gpio, 0);

	if (ddata->resb_gpio)
		gpiod_set_value_cansleep(ddata->resb_gpio, 0);

	/* wait at least 5 vsyncs after disabling the LCD */

	msleep(100);

	in->ops.dpi->disable(in);

	if (ddata->vcc)
		regulator_disable(ddata->vcc);

	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
}

static void sharp_ls_set_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	ddata->videomode = *timings;
	dssdev->panel.timings = *timings;

	in->ops.dpi->set_timings(in, timings);
}

static void sharp_ls_get_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);

	*timings = ddata->videomode;
}

static int sharp_ls_check_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	return in->ops.dpi->check_timings(in, timings);
}

static struct omap_dss_driver sharp_ls_ops = {
	.connect	= sharp_ls_connect,
	.disconnect	= sharp_ls_disconnect,

	.enable		= sharp_ls_enable,
	.disable	= sharp_ls_disable,

	.set_timings	= sharp_ls_set_timings,
	.get_timings	= sharp_ls_get_timings,
	.check_timings	= sharp_ls_check_timings,

	.get_resolution	= omapdss_default_get_resolution,
};

static  int sharp_ls_get_gpio_of(struct device *dev, int index, int val,
	const char *desc, struct gpio_desc **gpiod)
{
	struct gpio_desc *gd;

	*gpiod = NULL;

	gd = devm_gpiod_get_index(dev, desc, index, GPIOD_OUT_LOW);
	if (IS_ERR(gd))
		return PTR_ERR(gd);

	*gpiod = gd;
	return 0;
}

static int sharp_ls_probe_of(struct platform_device *pdev)
{
	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	struct device_node *node = pdev->dev.of_node;
	struct omap_dss_device *in;
	int r;

	ddata->vcc = devm_regulator_get(&pdev->dev, "envdd");
	if (IS_ERR(ddata->vcc)) {
		dev_err(&pdev->dev, "failed to get regulator\n");
		return PTR_ERR(ddata->vcc);
	}

	/* lcd INI */
	r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "enable", &ddata->ini_gpio);
	if (r)
		return r;

	/* lcd RESB */
	r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "reset", &ddata->resb_gpio);
	if (r)
		return r;

	/* lcd MO */
	r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "mode", &ddata->mo_gpio);
	if (r)
		return r;

	/* lcd LR */
	r = sharp_ls_get_gpio_of(&pdev->dev, 1, 1, "mode", &ddata->lr_gpio);
	if (r)
		return r;

	/* lcd UD */
	r = sharp_ls_get_gpio_of(&pdev->dev, 2, 1, "mode", &ddata->ud_gpio);
	if (r)
		return r;

	in = omapdss_of_find_source_for_first_ep(node);
	if (IS_ERR(in)) {
		dev_err(&pdev->dev, "failed to find video source\n");
		return PTR_ERR(in);
	}

	ddata->in = in;

	return 0;
}

static int sharp_ls_probe(struct platform_device *pdev)
{
	struct panel_drv_data *ddata;
	struct omap_dss_device *dssdev;
	int r;

	if (!pdev->dev.of_node)
		return -ENODEV;

	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
	if (ddata == NULL)
		return -ENOMEM;

	platform_set_drvdata(pdev, ddata);

	r = sharp_ls_probe_of(pdev);
	if (r)
		return r;

	ddata->videomode = sharp_ls_timings;

	dssdev = &ddata->dssdev;
	dssdev->dev = &pdev->dev;
	dssdev->driver = &sharp_ls_ops;
	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
	dssdev->owner = THIS_MODULE;
	dssdev->panel.timings = ddata->videomode;
	dssdev->phy.dpi.data_lines = ddata->data_lines;

	r = omapdss_register_display(dssdev);
	if (r) {
		dev_err(&pdev->dev, "Failed to register panel\n");
		goto err_reg;
	}

	return 0;

err_reg:
	omap_dss_put_device(ddata->in);
	return r;
}

static int __exit sharp_ls_remove(struct platform_device *pdev)
{
	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	struct omap_dss_device *dssdev = &ddata->dssdev;
	struct omap_dss_device *in = ddata->in;

	omapdss_unregister_display(dssdev);

	sharp_ls_disable(dssdev);
	sharp_ls_disconnect(dssdev);

	omap_dss_put_device(in);

	return 0;
}

static const struct of_device_id sharp_ls_of_match[] = {
	{ .compatible = "omapdss,sharp,ls037v7dw01", },
	{},
};

MODULE_DEVICE_TABLE(of, sharp_ls_of_match);

static struct platform_driver sharp_ls_driver = {
	.probe = sharp_ls_probe,
	.remove = __exit_p(sharp_ls_remove),
	.driver = {
		.name = "panel-sharp-ls037v7dw01",
		.of_match_table = sharp_ls_of_match,
		.suppress_bind_attrs = true,
	},
};

module_platform_driver(sharp_ls_driver);

MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
f76ee892 TV	2	/*
	3	* LCD panel driver for Sharp LS037V7DW01
	4	*
	5	* Copyright (C) 2013 Texas Instruments
	6	* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
f76ee892 TV	7	*/
	8
	9	#include <linux/delay.h>
	10	#include <linux/gpio.h>
	11	#include <linux/module.h>
	12	#include <linux/of.h>
	13	#include <linux/of_gpio.h>
	14	#include <linux/platform_device.h>
	15	#include <linux/slab.h>
	16	#include <linux/regulator/consumer.h>
62d9e44e	17	#include <video/omapfb_dss.h>
f76ee892 TV	18
	19	struct panel_drv_data {
	20	struct omap_dss_device dssdev;
	21	struct omap_dss_device *in;
	22	struct regulator *vcc;
	23
	24	int data_lines;
	25
	26	struct omap_video_timings videomode;
	27
	28	struct gpio_desc resb_gpio; / low = reset active min 20 us */
	29	struct gpio_desc ini_gpio; / high = power on */
	30	struct gpio_desc mo_gpio; / low = 480x640, high = 240x320 */
	31	struct gpio_desc lr_gpio; / high = conventional horizontal scanning */
	32	struct gpio_desc ud_gpio; / high = conventional vertical scanning */
	33	};
	34
	35	static const struct omap_video_timings sharp_ls_timings = {
	36	.x_res = 480,
	37	.y_res = 640,
	38
	39	.pixelclock = 19200000,
	40
	41	.hsw = 2,
	42	.hfp = 1,
	43	.hbp = 28,
	44
	45	.vsw = 1,
	46	.vfp = 1,
	47	.vbp = 1,
	48
	49	.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
	50	.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
	51	.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
	52	.de_level = OMAPDSS_SIG_ACTIVE_HIGH,
	53	.sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
	54	};
	55
	56	#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
	57
	58	static int sharp_ls_connect(struct omap_dss_device *dssdev)
	59	{
	60	struct panel_drv_data *ddata = to_panel_data(dssdev);
	61	struct omap_dss_device *in = ddata->in;
	62	int r;
	63
	64	if (omapdss_device_is_connected(dssdev))
	65	return 0;
	66
	67	r = in->ops.dpi->connect(in, dssdev);
	68	if (r)
	69	return r;
	70
	71	return 0;
	72	}
	73
	74	static void sharp_ls_disconnect(struct omap_dss_device *dssdev)
	75	{
	76	struct panel_drv_data *ddata = to_panel_data(dssdev);
	77	struct omap_dss_device *in = ddata->in;
	78
	79	if (!omapdss_device_is_connected(dssdev))
	80	return;
	81
82	in->ops.dpi->disconnect(in, dssdev);
83	}
84
85	static int sharp_ls_enable(struct omap_dss_device *dssdev)
86	{
87	struct panel_drv_data *ddata = to_panel_data(dssdev);
88	struct omap_dss_device *in = ddata->in;
89	int r;
90
91	if (!omapdss_device_is_connected(dssdev))
92	return -ENODEV;
93
94	if (omapdss_device_is_enabled(dssdev))
95	return 0;
96
97	if (ddata->data_lines)
98	in->ops.dpi->set_data_lines(in, ddata->data_lines);
99	in->ops.dpi->set_timings(in, &ddata->videomode);
100
101	if (ddata->vcc) {
102	r = regulator_enable(ddata->vcc);
103	if (r != 0)
104	return r;
105	}
106
107	r = in->ops.dpi->enable(in);
108	if (r) {
109	regulator_disable(ddata->vcc);
110	return r;
111	}
112
113	/* wait couple of vsyncs until enabling the LCD */
114	msleep(50);
115
116	if (ddata->resb_gpio)
117	gpiod_set_value_cansleep(ddata->resb_gpio, 1);
118
119	if (ddata->ini_gpio)
120	gpiod_set_value_cansleep(ddata->ini_gpio, 1);
121
122	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
123
124	return 0;
125	}
126
127	static void sharp_ls_disable(struct omap_dss_device *dssdev)
128	{
129	struct panel_drv_data *ddata = to_panel_data(dssdev);
130	struct omap_dss_device *in = ddata->in;
131
132	if (!omapdss_device_is_enabled(dssdev))
133	return;
134
135	if (ddata->ini_gpio)
136	gpiod_set_value_cansleep(ddata->ini_gpio, 0);
137
138	if (ddata->resb_gpio)
139	gpiod_set_value_cansleep(ddata->resb_gpio, 0);
140
141	/* wait at least 5 vsyncs after disabling the LCD */
142
143	msleep(100);
144
145	in->ops.dpi->disable(in);
146
147	if (ddata->vcc)
148	regulator_disable(ddata->vcc);
149
150	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
151	}
152
153	static void sharp_ls_set_timings(struct omap_dss_device *dssdev,
154	struct omap_video_timings *timings)
155	{
156	struct panel_drv_data *ddata = to_panel_data(dssdev);
157	struct omap_dss_device *in = ddata->in;
158
159	ddata->videomode = *timings;
160	dssdev->panel.timings = *timings;
161
162	in->ops.dpi->set_timings(in, timings);
163	}
164
165	static void sharp_ls_get_timings(struct omap_dss_device *dssdev,
166	struct omap_video_timings *timings)
167	{
168	struct panel_drv_data *ddata = to_panel_data(dssdev);
169
170	*timings = ddata->videomode;
171	}
172
173	static int sharp_ls_check_timings(struct omap_dss_device *dssdev,
174	struct omap_video_timings *timings)
175	{
176	struct panel_drv_data *ddata = to_panel_data(dssdev);
177	struct omap_dss_device *in = ddata->in;
178
179	return in->ops.dpi->check_timings(in, timings);
180	}
181
182	static struct omap_dss_driver sharp_ls_ops = {
183	.connect = sharp_ls_connect,
184	.disconnect = sharp_ls_disconnect,
185
186	.enable = sharp_ls_enable,
187	.disable = sharp_ls_disable,
188
189	.set_timings = sharp_ls_set_timings,
190	.get_timings = sharp_ls_get_timings,
191	.check_timings = sharp_ls_check_timings,
192
193	.get_resolution = omapdss_default_get_resolution,
194	};
195
f76ee892 TV	196	static int sharp_ls_get_gpio_of(struct device *dev, int index, int val,
	197	const char desc, struct gpio_desc *gpiod)
	198	{
	199	struct gpio_desc *gd;
	200
	201	*gpiod = NULL;
	202
	203	gd = devm_gpiod_get_index(dev, desc, index, GPIOD_OUT_LOW);
	204	if (IS_ERR(gd))
	205	return PTR_ERR(gd);
	206
	207	*gpiod = gd;
	208	return 0;
	209	}
	210
	211	static int sharp_ls_probe_of(struct platform_device *pdev)
	212	{
	213	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	214	struct device_node *node = pdev->dev.of_node;
	215	struct omap_dss_device *in;
	216	int r;
	217
	218	ddata->vcc = devm_regulator_get(&pdev->dev, "envdd");
	219	if (IS_ERR(ddata->vcc)) {
	220	dev_err(&pdev->dev, "failed to get regulator\n");
	221	return PTR_ERR(ddata->vcc);
	222	}
	223
	224	/* lcd INI */
	225	r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "enable", &ddata->ini_gpio);
	226	if (r)
	227	return r;
	228
	229	/* lcd RESB */
	230	r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "reset", &ddata->resb_gpio);
	231	if (r)
	232	return r;
	233
	234	/* lcd MO */
	235	r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "mode", &ddata->mo_gpio);
	236	if (r)
	237	return r;
	238
	239	/* lcd LR */
	240	r = sharp_ls_get_gpio_of(&pdev->dev, 1, 1, "mode", &ddata->lr_gpio);
	241	if (r)
	242	return r;
	243
	244	/* lcd UD */
	245	r = sharp_ls_get_gpio_of(&pdev->dev, 2, 1, "mode", &ddata->ud_gpio);
	246	if (r)
	247	return r;
	248
	249	in = omapdss_of_find_source_for_first_ep(node);
	250	if (IS_ERR(in)) {
	251	dev_err(&pdev->dev, "failed to find video source\n");
	252	return PTR_ERR(in);
	253	}
	254
	255	ddata->in = in;
	256
	257	return 0;
	258	}
	259
260	static int sharp_ls_probe(struct platform_device *pdev)
261	{
262	struct panel_drv_data *ddata;
263	struct omap_dss_device *dssdev;
264	int r;
265
d8647f9e PU	266	if (!pdev->dev.of_node)
	267	return -ENODEV;
	268
f76ee892 TV	269	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
	270	if (ddata == NULL)
	271	return -ENOMEM;
	272
	273	platform_set_drvdata(pdev, ddata);
	274
d8647f9e PU	275	r = sharp_ls_probe_of(pdev);
	276	if (r)
	277	return r;
f76ee892 TV	278
	279	ddata->videomode = sharp_ls_timings;
	280
	281	dssdev = &ddata->dssdev;
	282	dssdev->dev = &pdev->dev;
	283	dssdev->driver = &sharp_ls_ops;
	284	dssdev->type = OMAP_DISPLAY_TYPE_DPI;
	285	dssdev->owner = THIS_MODULE;
	286	dssdev->panel.timings = ddata->videomode;
	287	dssdev->phy.dpi.data_lines = ddata->data_lines;
	288
	289	r = omapdss_register_display(dssdev);
	290	if (r) {
	291	dev_err(&pdev->dev, "Failed to register panel\n");
	292	goto err_reg;
	293	}
	294
	295	return 0;
	296
	297	err_reg:
	298	omap_dss_put_device(ddata->in);
	299	return r;
	300	}
	301
	302	static int __exit sharp_ls_remove(struct platform_device *pdev)
	303	{
	304	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
	305	struct omap_dss_device *dssdev = &ddata->dssdev;
	306	struct omap_dss_device *in = ddata->in;
	307
	308	omapdss_unregister_display(dssdev);
	309
	310	sharp_ls_disable(dssdev);
	311	sharp_ls_disconnect(dssdev);
	312
	313	omap_dss_put_device(in);
	314
	315	return 0;
	316	}
	317
	318	static const struct of_device_id sharp_ls_of_match[] = {
	319	{ .compatible = "omapdss,sharp,ls037v7dw01", },
	320	{},
	321	};
	322
	323	MODULE_DEVICE_TABLE(of, sharp_ls_of_match);
	324
	325	static struct platform_driver sharp_ls_driver = {
	326	.probe = sharp_ls_probe,
	327	.remove = __exit_p(sharp_ls_remove),
	328	.driver = {
	329	.name = "panel-sharp-ls037v7dw01",
	330	.of_match_table = sharp_ls_of_match,
	331	.suppress_bind_attrs = true,
	332	},
	333	};
	334
	335	module_platform_driver(sharp_ls_driver);
	336
	337	MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
	338	MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver");
	339	MODULE_LICENSE("GPL");