1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
*/
#include <linux/backlight.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
struct osd101t2587_panel {
struct drm_panel base;
struct mipi_dsi_device *dsi;
struct backlight_device *backlight;
struct regulator *supply;
bool prepared;
bool enabled;
const struct drm_display_mode *default_mode;
};
static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)
{
return container_of(panel, struct osd101t2587_panel, base);
}
static int osd101t2587_panel_disable(struct drm_panel *panel)
{
struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
int ret;
if (!osd101t2587->enabled)
return 0;
backlight_disable(osd101t2587->backlight);
ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
osd101t2587->enabled = false;
return ret;
}
static int osd101t2587_panel_unprepare(struct drm_panel *panel)
{
struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
if (!osd101t2587->prepared)
return 0;
regulator_disable(osd101t2587->supply);
osd101t2587->prepared = false;
return 0;
}
static int osd101t2587_panel_prepare(struct drm_panel *panel)
{
struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
int ret;
if (osd101t2587->prepared)
return 0;
ret = regulator_enable(osd101t2587->supply);
if (!ret)
osd101t2587->prepared = true;
return ret;
}
static int osd101t2587_panel_enable(struct drm_panel *panel)
{
struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
int ret;
if (osd101t2587->enabled)
return 0;
ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
if (ret)
return ret;
backlight_enable(osd101t2587->backlight);
osd101t2587->enabled = true;
return ret;
}
static const struct drm_display_mode default_mode_osd101t2587 = {
.clock = 164400,
.hdisplay = 1920,
.hsync_start = 1920 + 152,
.hsync_end = 1920 + 152 + 52,
.htotal = 1920 + 152 + 52 + 20,
.vdisplay = 1200,
.vsync_start = 1200 + 24,
.vsync_end = 1200 + 24 + 6,
.vtotal = 1200 + 24 + 6 + 48,
.vrefresh = 60,
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
};
static int osd101t2587_panel_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
struct drm_display_mode *mode;
mode = drm_mode_duplicate(panel->drm, osd101t2587->default_mode);
if (!mode) {
dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
osd101t2587->default_mode->hdisplay,
osd101t2587->default_mode->vdisplay,
osd101t2587->default_mode->vrefresh);
return -ENOMEM;
}
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
connector->display_info.width_mm = 217;
connector->display_info.height_mm = 136;
return 1;
}
static const struct drm_panel_funcs osd101t2587_panel_funcs = {
.disable = osd101t2587_panel_disable,
.unprepare = osd101t2587_panel_unprepare,
.prepare = osd101t2587_panel_prepare,
.enable = osd101t2587_panel_enable,
.get_modes = osd101t2587_panel_get_modes,
};
static const struct of_device_id osd101t2587_of_match[] = {
{
.compatible = "osddisplays,osd101t2587-53ts",
.data = &default_mode_osd101t2587,
}, {
/* sentinel */
}
};
MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
{
struct device *dev = &osd101t2587->dsi->dev;
osd101t2587->supply = devm_regulator_get(dev, "power");
if (IS_ERR(osd101t2587->supply))
return PTR_ERR(osd101t2587->supply);
osd101t2587->backlight = devm_of_find_backlight(dev);
if (IS_ERR(osd101t2587->backlight))
return PTR_ERR(osd101t2587->backlight);
drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev,
&osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);
return drm_panel_add(&osd101t2587->base);
}
static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
{
struct osd101t2587_panel *osd101t2587;
const struct of_device_id *id;
int ret;
id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);
if (!id)
return -ENODEV;
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
MIPI_DSI_MODE_EOT_PACKET;
osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
if (!osd101t2587)
return -ENOMEM;
mipi_dsi_set_drvdata(dsi, osd101t2587);
osd101t2587->dsi = dsi;
osd101t2587->default_mode = id->data;
ret = osd101t2587_panel_add(osd101t2587);
if (ret < 0)
return ret;
ret = mipi_dsi_attach(dsi);
if (ret)
drm_panel_remove(&osd101t2587->base);
return ret;
}
static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
{
struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
int ret;
ret = osd101t2587_panel_disable(&osd101t2587->base);
if (ret < 0)
dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret);
osd101t2587_panel_unprepare(&osd101t2587->base);
drm_panel_remove(&osd101t2587->base);
ret = mipi_dsi_detach(dsi);
if (ret < 0)
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
return ret;
}
static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
osd101t2587_panel_disable(&osd101t2587->base);
osd101t2587_panel_unprepare(&osd101t2587->base);
}
static struct mipi_dsi_driver osd101t2587_panel_driver = {
.driver = {
.name = "panel-osd-osd101t2587-53ts",
.of_match_table = osd101t2587_of_match,
},
.probe = osd101t2587_panel_probe,
.remove = osd101t2587_panel_remove,
.shutdown = osd101t2587_panel_shutdown,
};
module_mipi_dsi_driver(osd101t2587_panel_driver);
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");
MODULE_LICENSE("GPL v2");
|
