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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2022 Svyatoslav Ryhel <clamor95@gmail.com>
*/
#include <common.h>
#include <backlight.h>
#include <dm.h>
#include <panel.h>
#include <log.h>
#include <misc.h>
#include <mipi_display.h>
#include <mipi_dsi.h>
#include <asm/gpio.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <power/regulator.h>
struct endeavoru_panel_priv {
struct udevice *vdd;
struct udevice *vddio;
struct udevice *backlight;
struct gpio_desc reset_gpio;
};
static struct display_timing default_timing = {
.pixelclock.typ = 63200000,
.hactive.typ = 720,
.hfront_porch.typ = 55,
.hback_porch.typ = 29,
.hsync_len.typ = 16,
.vactive.typ = 1280,
.vfront_porch.typ = 2,
.vback_porch.typ = 1,
.vsync_len.typ = 1,
};
static void dcs_write_one(struct mipi_dsi_device *dsi, u8 cmd, u8 data)
{
mipi_dsi_dcs_write(dsi, cmd, &data, 1);
}
/*
* This panel is not able to auto-increment all cmd addresses so for some of
* them, we need to send them one by one...
*/
#define dcs_write_seq(dsi, cmd, seq...) \
({ \
static const u8 d[] = { seq }; \
unsigned int i; \
\
for (i = 0; i < ARRAY_SIZE(d) ; i++) \
dcs_write_one(dsi, cmd + i, d[i]); \
})
static int endeavoru_panel_enable_backlight(struct udevice *dev)
{
struct endeavoru_panel_priv *priv = dev_get_priv(dev);
int ret;
ret = dm_gpio_set_value(&priv->reset_gpio, 1);
if (ret) {
log_err("error changing reset-gpios (%d)\n", ret);
return ret;
}
mdelay(5);
ret = regulator_set_enable_if_allowed(priv->vddio, 1);
if (ret) {
log_err("error enabling iovcc-supply (%d)\n", ret);
return ret;
}
mdelay(1);
ret = regulator_set_enable_if_allowed(priv->vdd, 1);
if (ret) {
log_err("error enabling vcc-supply (%d)\n", ret);
return ret;
}
mdelay(20);
ret = dm_gpio_set_value(&priv->reset_gpio, 0);
if (ret) {
log_err("error changing reset-gpios (%d)\n", ret);
return ret;
}
mdelay(2);
/* Reset panel */
ret = dm_gpio_set_value(&priv->reset_gpio, 1);
if (ret) {
log_err("error changing reset-gpios (%d)\n", ret);
return ret;
}
mdelay(1);
ret = dm_gpio_set_value(&priv->reset_gpio, 0);
if (ret) {
log_err("error changing reset-gpios (%d)\n", ret);
return ret;
}
mdelay(25);
return 0;
}
static int endeavoru_panel_set_backlight(struct udevice *dev, int percent)
{
struct endeavoru_panel_priv *priv = dev_get_priv(dev);
struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
struct mipi_dsi_device *dsi = plat->device;
int ret;
dcs_write_one(dsi, 0xc2, 0x08);
/* color enhancement 2.2 */
dcs_write_one(dsi, 0xff, 0x03);
dcs_write_one(dsi, 0xfe, 0x08);
dcs_write_one(dsi, 0x18, 0x00);
dcs_write_one(dsi, 0x19, 0x00);
dcs_write_one(dsi, 0x1a, 0x00);
dcs_write_one(dsi, 0x25, 0x26);
dcs_write_seq(dsi, 0x00, 0x00, 0x05, 0x10, 0x17,
0x22, 0x26, 0x29, 0x29, 0x26, 0x23,
0x17, 0x12, 0x06, 0x02, 0x01, 0x00);
dcs_write_one(dsi, 0xfb, 0x01);
dcs_write_one(dsi, 0xff, 0x00);
dcs_write_one(dsi, 0xfe, 0x01);
mipi_dsi_dcs_exit_sleep_mode(dsi);
mdelay(105);
dcs_write_one(dsi, 0x35, 0x00);
/* PWM frequency adjust */
dcs_write_one(dsi, 0xff, 0x04);
dcs_write_one(dsi, 0x0a, 0x07);
dcs_write_one(dsi, 0x09, 0x20);
dcs_write_one(dsi, 0xff, 0x00);
dcs_write_one(dsi, 0xff, 0xee);
dcs_write_one(dsi, 0x12, 0x50);
dcs_write_one(dsi, 0x13, 0x02);
dcs_write_one(dsi, 0x6a, 0x60);
dcs_write_one(dsi, 0xfb, 0x01);
dcs_write_one(dsi, 0xff, 0x00);
mipi_dsi_dcs_set_display_on(dsi);
mdelay(42);
dcs_write_one(dsi, 0xba, 0x01);
dcs_write_one(dsi, 0x53, 0x24);
dcs_write_one(dsi, 0x55, 0x80);
dcs_write_one(dsi, 0x5e, 0x06);
ret = backlight_enable(priv->backlight);
if (ret)
return ret;
/* Set backlight */
dcs_write_one(dsi, 0x51, 0x96);
ret = backlight_set_brightness(priv->backlight, percent);
if (ret)
return ret;
return 0;
}
static int endeavoru_panel_timings(struct udevice *dev,
struct display_timing *timing)
{
memcpy(timing, &default_timing, sizeof(*timing));
return 0;
}
static int endeavoru_panel_of_to_plat(struct udevice *dev)
{
struct endeavoru_panel_priv *priv = dev_get_priv(dev);
int ret;
ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
"backlight", &priv->backlight);
if (ret) {
log_err("cannot get backlight: ret = %d\n", ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"vdd-supply", &priv->vdd);
if (ret) {
log_err("cannot get vdd-supply: ret = %d\n", ret);
return ret;
}
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"vddio-supply", &priv->vddio);
if (ret) {
log_err("cannot get vddio-supply: ret = %d\n", ret);
return ret;
}
ret = gpio_request_by_name(dev, "reset-gpios", 0,
&priv->reset_gpio, GPIOD_IS_OUT);
if (ret) {
log_err("could not decode reser-gpios (%d)\n", ret);
return ret;
}
return 0;
}
static int endeavoru_panel_probe(struct udevice *dev)
{
struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
/* fill characteristics of DSI data link */
plat->lanes = 2;
plat->format = MIPI_DSI_FMT_RGB888;
plat->mode_flags = MIPI_DSI_MODE_VIDEO;
return 0;
}
static const struct panel_ops endeavoru_panel_ops = {
.enable_backlight = endeavoru_panel_enable_backlight,
.set_backlight = endeavoru_panel_set_backlight,
.get_display_timing = endeavoru_panel_timings,
};
static const struct udevice_id endeavoru_panel_ids[] = {
{ .compatible = "htc,edge-panel" },
{ }
};
U_BOOT_DRIVER(endeavoru_panel) = {
.name = "endeavoru_panel",
.id = UCLASS_PANEL,
.of_match = endeavoru_panel_ids,
.ops = &endeavoru_panel_ops,
.of_to_plat = endeavoru_panel_of_to_plat,
.probe = endeavoru_panel_probe,
.plat_auto = sizeof(struct mipi_dsi_panel_plat),
.priv_auto = sizeof(struct endeavoru_panel_priv),
};
|
