xref: /linux/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c (revision daa2be74b1b2302004945b2a5e32424e177cc7da)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  *  Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com
4  *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
5  */
6 
7 #include <linux/module.h>
8 #include <linux/of.h>
9 #include <linux/regulator/consumer.h>
10 
11 #include <drm/drm_crtc.h>
12 #include <drm/drm_device.h>
13 #include <drm/drm_mipi_dsi.h>
14 #include <drm/drm_panel.h>
15 
16 #include <video/mipi_display.h>
17 
18 struct osd101t2587_panel {
19 	struct drm_panel base;
20 	struct mipi_dsi_device *dsi;
21 
22 	struct regulator *supply;
23 
24 	const struct drm_display_mode *default_mode;
25 };
26 
27 static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)
28 {
29 	return container_of(panel, struct osd101t2587_panel, base);
30 }
31 
32 static int osd101t2587_panel_disable(struct drm_panel *panel)
33 {
34 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
35 	int ret;
36 
37 	ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
38 
39 	return ret;
40 }
41 
42 static int osd101t2587_panel_unprepare(struct drm_panel *panel)
43 {
44 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
45 
46 	regulator_disable(osd101t2587->supply);
47 
48 	return 0;
49 }
50 
51 static int osd101t2587_panel_prepare(struct drm_panel *panel)
52 {
53 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
54 
55 	return regulator_enable(osd101t2587->supply);
56 }
57 
58 static int osd101t2587_panel_enable(struct drm_panel *panel)
59 {
60 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
61 	int ret;
62 
63 	ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
64 	if (ret)
65 		return ret;
66 
67 	return ret;
68 }
69 
70 static const struct drm_display_mode default_mode_osd101t2587 = {
71 	.clock = 164400,
72 	.hdisplay = 1920,
73 	.hsync_start = 1920 + 152,
74 	.hsync_end = 1920 + 152 + 52,
75 	.htotal = 1920 + 152 + 52 + 20,
76 	.vdisplay = 1200,
77 	.vsync_start = 1200 + 24,
78 	.vsync_end = 1200 + 24 + 6,
79 	.vtotal = 1200 + 24 + 6 + 48,
80 	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
81 };
82 
83 static int osd101t2587_panel_get_modes(struct drm_panel *panel,
84 				       struct drm_connector *connector)
85 {
86 	struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
87 	struct drm_display_mode *mode;
88 
89 	mode = drm_mode_duplicate(connector->dev, osd101t2587->default_mode);
90 	if (!mode) {
91 		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
92 			osd101t2587->default_mode->hdisplay,
93 			osd101t2587->default_mode->vdisplay,
94 			drm_mode_vrefresh(osd101t2587->default_mode));
95 		return -ENOMEM;
96 	}
97 
98 	drm_mode_set_name(mode);
99 
100 	drm_mode_probed_add(connector, mode);
101 
102 	connector->display_info.width_mm = 217;
103 	connector->display_info.height_mm = 136;
104 
105 	return 1;
106 }
107 
108 static const struct drm_panel_funcs osd101t2587_panel_funcs = {
109 	.disable = osd101t2587_panel_disable,
110 	.unprepare = osd101t2587_panel_unprepare,
111 	.prepare = osd101t2587_panel_prepare,
112 	.enable = osd101t2587_panel_enable,
113 	.get_modes = osd101t2587_panel_get_modes,
114 };
115 
116 static const struct of_device_id osd101t2587_of_match[] = {
117 	{
118 		.compatible = "osddisplays,osd101t2587-53ts",
119 		.data = &default_mode_osd101t2587,
120 	}, {
121 		/* sentinel */
122 	}
123 };
124 MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
125 
126 static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
127 {
128 	struct device *dev = &osd101t2587->dsi->dev;
129 	int ret;
130 
131 	osd101t2587->supply = devm_regulator_get(dev, "power");
132 	if (IS_ERR(osd101t2587->supply))
133 		return PTR_ERR(osd101t2587->supply);
134 
135 	drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev,
136 		       &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);
137 
138 	ret = drm_panel_of_backlight(&osd101t2587->base);
139 	if (ret)
140 		return ret;
141 
142 	drm_panel_add(&osd101t2587->base);
143 
144 	return 0;
145 }
146 
147 static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
148 {
149 	struct osd101t2587_panel *osd101t2587;
150 	const struct of_device_id *id;
151 	int ret;
152 
153 	id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);
154 	if (!id)
155 		return -ENODEV;
156 
157 	dsi->lanes = 4;
158 	dsi->format = MIPI_DSI_FMT_RGB888;
159 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
160 			  MIPI_DSI_MODE_VIDEO_BURST |
161 			  MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
162 			  MIPI_DSI_MODE_NO_EOT_PACKET;
163 
164 	osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
165 	if (!osd101t2587)
166 		return -ENOMEM;
167 
168 	mipi_dsi_set_drvdata(dsi, osd101t2587);
169 
170 	osd101t2587->dsi = dsi;
171 	osd101t2587->default_mode = id->data;
172 
173 	ret = osd101t2587_panel_add(osd101t2587);
174 	if (ret < 0)
175 		return ret;
176 
177 	ret = mipi_dsi_attach(dsi);
178 	if (ret)
179 		drm_panel_remove(&osd101t2587->base);
180 
181 	return ret;
182 }
183 
184 static void osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
185 {
186 	struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
187 	int ret;
188 
189 	drm_panel_remove(&osd101t2587->base);
190 
191 	ret = mipi_dsi_detach(dsi);
192 	if (ret < 0)
193 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
194 }
195 
196 static struct mipi_dsi_driver osd101t2587_panel_driver = {
197 	.driver = {
198 		.name = "panel-osd-osd101t2587-53ts",
199 		.of_match_table = osd101t2587_of_match,
200 	},
201 	.probe = osd101t2587_panel_probe,
202 	.remove = osd101t2587_panel_remove,
203 };
204 module_mipi_dsi_driver(osd101t2587_panel_driver);
205 
206 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
207 MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");
208 MODULE_LICENSE("GPL v2");
209