This source file includes following definitions.
- ti_osd_panel
- osd101t2587_panel_disable
- osd101t2587_panel_unprepare
- osd101t2587_panel_prepare
- osd101t2587_panel_enable
- osd101t2587_panel_get_modes
- osd101t2587_panel_add
- osd101t2587_panel_probe
- osd101t2587_panel_remove
- osd101t2587_panel_shutdown
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6
7 #include <linux/backlight.h>
8 #include <linux/module.h>
9 #include <linux/of.h>
10 #include <linux/regulator/consumer.h>
11
12 #include <drm/drm_crtc.h>
13 #include <drm/drm_device.h>
14 #include <drm/drm_mipi_dsi.h>
15 #include <drm/drm_panel.h>
16
17 #include <video/mipi_display.h>
18
19 struct osd101t2587_panel {
20 struct drm_panel base;
21 struct mipi_dsi_device *dsi;
22
23 struct backlight_device *backlight;
24 struct regulator *supply;
25
26 bool prepared;
27 bool enabled;
28
29 const struct drm_display_mode *default_mode;
30 };
31
32 static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)
33 {
34 return container_of(panel, struct osd101t2587_panel, base);
35 }
36
37 static int osd101t2587_panel_disable(struct drm_panel *panel)
38 {
39 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
40 int ret;
41
42 if (!osd101t2587->enabled)
43 return 0;
44
45 backlight_disable(osd101t2587->backlight);
46
47 ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
48
49 osd101t2587->enabled = false;
50
51 return ret;
52 }
53
54 static int osd101t2587_panel_unprepare(struct drm_panel *panel)
55 {
56 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
57
58 if (!osd101t2587->prepared)
59 return 0;
60
61 regulator_disable(osd101t2587->supply);
62 osd101t2587->prepared = false;
63
64 return 0;
65 }
66
67 static int osd101t2587_panel_prepare(struct drm_panel *panel)
68 {
69 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
70 int ret;
71
72 if (osd101t2587->prepared)
73 return 0;
74
75 ret = regulator_enable(osd101t2587->supply);
76 if (!ret)
77 osd101t2587->prepared = true;
78
79 return ret;
80 }
81
82 static int osd101t2587_panel_enable(struct drm_panel *panel)
83 {
84 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
85 int ret;
86
87 if (osd101t2587->enabled)
88 return 0;
89
90 ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
91 if (ret)
92 return ret;
93
94 backlight_enable(osd101t2587->backlight);
95
96 osd101t2587->enabled = true;
97
98 return ret;
99 }
100
101 static const struct drm_display_mode default_mode_osd101t2587 = {
102 .clock = 164400,
103 .hdisplay = 1920,
104 .hsync_start = 1920 + 152,
105 .hsync_end = 1920 + 152 + 52,
106 .htotal = 1920 + 152 + 52 + 20,
107 .vdisplay = 1200,
108 .vsync_start = 1200 + 24,
109 .vsync_end = 1200 + 24 + 6,
110 .vtotal = 1200 + 24 + 6 + 48,
111 .vrefresh = 60,
112 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
113 };
114
115 static int osd101t2587_panel_get_modes(struct drm_panel *panel)
116 {
117 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
118 struct drm_display_mode *mode;
119
120 mode = drm_mode_duplicate(panel->drm, osd101t2587->default_mode);
121 if (!mode) {
122 dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
123 osd101t2587->default_mode->hdisplay,
124 osd101t2587->default_mode->vdisplay,
125 osd101t2587->default_mode->vrefresh);
126 return -ENOMEM;
127 }
128
129 drm_mode_set_name(mode);
130
131 drm_mode_probed_add(panel->connector, mode);
132
133 panel->connector->display_info.width_mm = 217;
134 panel->connector->display_info.height_mm = 136;
135
136 return 1;
137 }
138
139 static const struct drm_panel_funcs osd101t2587_panel_funcs = {
140 .disable = osd101t2587_panel_disable,
141 .unprepare = osd101t2587_panel_unprepare,
142 .prepare = osd101t2587_panel_prepare,
143 .enable = osd101t2587_panel_enable,
144 .get_modes = osd101t2587_panel_get_modes,
145 };
146
147 static const struct of_device_id osd101t2587_of_match[] = {
148 {
149 .compatible = "osddisplays,osd101t2587-53ts",
150 .data = &default_mode_osd101t2587,
151 }, {
152
153 }
154 };
155 MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
156
157 static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
158 {
159 struct device *dev = &osd101t2587->dsi->dev;
160
161 osd101t2587->supply = devm_regulator_get(dev, "power");
162 if (IS_ERR(osd101t2587->supply))
163 return PTR_ERR(osd101t2587->supply);
164
165 osd101t2587->backlight = devm_of_find_backlight(dev);
166 if (IS_ERR(osd101t2587->backlight))
167 return PTR_ERR(osd101t2587->backlight);
168
169 drm_panel_init(&osd101t2587->base);
170 osd101t2587->base.funcs = &osd101t2587_panel_funcs;
171 osd101t2587->base.dev = &osd101t2587->dsi->dev;
172
173 return drm_panel_add(&osd101t2587->base);
174 }
175
176 static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
177 {
178 struct osd101t2587_panel *osd101t2587;
179 const struct of_device_id *id;
180 int ret;
181
182 id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);
183 if (!id)
184 return -ENODEV;
185
186 dsi->lanes = 4;
187 dsi->format = MIPI_DSI_FMT_RGB888;
188 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
189 MIPI_DSI_MODE_VIDEO_BURST |
190 MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
191 MIPI_DSI_MODE_EOT_PACKET;
192
193 osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
194 if (!osd101t2587)
195 return -ENOMEM;
196
197 mipi_dsi_set_drvdata(dsi, osd101t2587);
198
199 osd101t2587->dsi = dsi;
200 osd101t2587->default_mode = id->data;
201
202 ret = osd101t2587_panel_add(osd101t2587);
203 if (ret < 0)
204 return ret;
205
206 ret = mipi_dsi_attach(dsi);
207 if (ret)
208 drm_panel_remove(&osd101t2587->base);
209
210 return ret;
211 }
212
213 static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
214 {
215 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
216 int ret;
217
218 ret = osd101t2587_panel_disable(&osd101t2587->base);
219 if (ret < 0)
220 dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret);
221
222 osd101t2587_panel_unprepare(&osd101t2587->base);
223
224 drm_panel_remove(&osd101t2587->base);
225
226 ret = mipi_dsi_detach(dsi);
227 if (ret < 0)
228 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
229
230 return ret;
231 }
232
233 static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
234 {
235 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
236
237 osd101t2587_panel_disable(&osd101t2587->base);
238 osd101t2587_panel_unprepare(&osd101t2587->base);
239 }
240
241 static struct mipi_dsi_driver osd101t2587_panel_driver = {
242 .driver = {
243 .name = "panel-osd-osd101t2587-53ts",
244 .of_match_table = osd101t2587_of_match,
245 },
246 .probe = osd101t2587_panel_probe,
247 .remove = osd101t2587_panel_remove,
248 .shutdown = osd101t2587_panel_shutdown,
249 };
250 module_mipi_dsi_driver(osd101t2587_panel_driver);
251
252 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
253 MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");
254 MODULE_LICENSE("GPL v2");