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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019-2022 Bootlin
* Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
*/
#include <linux/types.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_connector.h>
#include <drm/drm_drv.h>
#include <drm/drm_encoder.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include "logicvc_crtc.h"
#include "logicvc_drm.h"
#include "logicvc_interface.h"
#include "logicvc_regs.h"
#define logicvc_interface_from_drm_encoder(c) \
container_of(c, struct logicvc_interface, drm_encoder)
#define logicvc_interface_from_drm_connector(c) \
container_of(c, struct logicvc_interface, drm_connector)
static void logicvc_encoder_enable(struct drm_encoder *drm_encoder)
{
struct logicvc_drm *logicvc = logicvc_drm(drm_encoder->dev);
struct logicvc_interface *interface =
logicvc_interface_from_drm_encoder(drm_encoder);
regmap_update_bits(logicvc->regmap, LOGICVC_POWER_CTRL_REG,
LOGICVC_POWER_CTRL_VIDEO_ENABLE,
LOGICVC_POWER_CTRL_VIDEO_ENABLE);
if (interface->drm_panel) {
drm_panel_prepare(interface->drm_panel);
drm_panel_enable(interface->drm_panel);
}
}
static void logicvc_encoder_disable(struct drm_encoder *drm_encoder)
{
struct logicvc_interface *interface =
logicvc_interface_from_drm_encoder(drm_encoder);
if (interface->drm_panel) {
drm_panel_disable(interface->drm_panel);
drm_panel_unprepare(interface->drm_panel);
}
}
static const struct drm_encoder_helper_funcs logicvc_encoder_helper_funcs = {
.enable = logicvc_encoder_enable,
.disable = logicvc_encoder_disable,
};
static const struct drm_encoder_funcs logicvc_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
static int logicvc_connector_get_modes(struct drm_connector *drm_connector)
{
struct logicvc_interface *interface =
logicvc_interface_from_drm_connector(drm_connector);
if (interface->drm_panel)
return drm_panel_get_modes(interface->drm_panel, drm_connector);
WARN_ONCE(1, "Retrieving modes from a native connector is not implemented.");
return 0;
}
static const struct drm_connector_helper_funcs logicvc_connector_helper_funcs = {
.get_modes = logicvc_connector_get_modes,
};
static const struct drm_connector_funcs logicvc_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = drm_connector_cleanup,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int logicvc_interface_encoder_type(struct logicvc_drm *logicvc)
{
switch (logicvc->config.display_interface) {
case LOGICVC_DISPLAY_INTERFACE_LVDS_4BITS:
case LOGICVC_DISPLAY_INTERFACE_LVDS_4BITS_CAMERA:
case LOGICVC_DISPLAY_INTERFACE_LVDS_3BITS:
return DRM_MODE_ENCODER_LVDS;
case LOGICVC_DISPLAY_INTERFACE_DVI:
return DRM_MODE_ENCODER_TMDS;
case LOGICVC_DISPLAY_INTERFACE_RGB:
return DRM_MODE_ENCODER_DPI;
default:
return DRM_MODE_ENCODER_NONE;
}
}
static int logicvc_interface_connector_type(struct logicvc_drm *logicvc)
{
switch (logicvc->config.display_interface) {
case LOGICVC_DISPLAY_INTERFACE_LVDS_4BITS:
case LOGICVC_DISPLAY_INTERFACE_LVDS_4BITS_CAMERA:
case LOGICVC_DISPLAY_INTERFACE_LVDS_3BITS:
return DRM_MODE_CONNECTOR_LVDS;
case LOGICVC_DISPLAY_INTERFACE_DVI:
return DRM_MODE_CONNECTOR_DVID;
case LOGICVC_DISPLAY_INTERFACE_RGB:
return DRM_MODE_CONNECTOR_DPI;
default:
return DRM_MODE_CONNECTOR_Unknown;
}
}
static bool logicvc_interface_native_connector(struct logicvc_drm *logicvc)
{
switch (logicvc->config.display_interface) {
case LOGICVC_DISPLAY_INTERFACE_DVI:
return true;
default:
return false;
}
}
void logicvc_interface_attach_crtc(struct logicvc_drm *logicvc)
{
uint32_t possible_crtcs = drm_crtc_mask(&logicvc->crtc->drm_crtc);
logicvc->interface->drm_encoder.possible_crtcs = possible_crtcs;
}
int logicvc_interface_init(struct logicvc_drm *logicvc)
{
struct logicvc_interface *interface;
struct drm_device *drm_dev = &logicvc->drm_dev;
struct device *dev = drm_dev->dev;
struct device_node *of_node = dev->of_node;
int encoder_type = logicvc_interface_encoder_type(logicvc);
int connector_type = logicvc_interface_connector_type(logicvc);
bool native_connector = logicvc_interface_native_connector(logicvc);
int ret;
interface = devm_kzalloc(dev, sizeof(*interface), GFP_KERNEL);
if (!interface) {
ret = -ENOMEM;
goto error_early;
}
ret = drm_of_find_panel_or_bridge(of_node, 0, 0, &interface->drm_panel,
&interface->drm_bridge);
if (ret == -EPROBE_DEFER)
goto error_early;
ret = drm_encoder_init(drm_dev, &interface->drm_encoder,
&logicvc_encoder_funcs, encoder_type, NULL);
if (ret) {
drm_err(drm_dev, "Failed to initialize encoder\n");
goto error_early;
}
drm_encoder_helper_add(&interface->drm_encoder,
&logicvc_encoder_helper_funcs);
if (native_connector || interface->drm_panel) {
ret = drm_connector_init(drm_dev, &interface->drm_connector,
&logicvc_connector_funcs,
connector_type);
if (ret) {
drm_err(drm_dev, "Failed to initialize connector\n");
goto error_encoder;
}
drm_connector_helper_add(&interface->drm_connector,
&logicvc_connector_helper_funcs);
ret = drm_connector_attach_encoder(&interface->drm_connector,
&interface->drm_encoder);
if (ret) {
drm_err(drm_dev,
"Failed to attach connector to encoder\n");
goto error_encoder;
}
}
if (interface->drm_bridge) {
ret = drm_bridge_attach(&interface->drm_encoder,
interface->drm_bridge, NULL, 0);
if (ret) {
drm_err(drm_dev,
"Failed to attach bridge to encoder\n");
goto error_encoder;
}
}
logicvc->interface = interface;
return 0;
error_encoder:
drm_encoder_cleanup(&interface->drm_encoder);
error_early:
return ret;
}
|
