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