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
|
// Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Pelagicore AG
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qeglfskmsgbmdevice_p.h"
#include "qeglfskmsgbmscreen_p.h"
#include <private/qeglfsintegration_p.h>
#include <QtCore/QLoggingCategory>
#include <QtCore/private/qcore_unix_p.h>
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
QT_BEGIN_NAMESPACE
Q_DECLARE_LOGGING_CATEGORY(qLcEglfsKmsDebug)
QEglFSKmsGbmDevice::QEglFSKmsGbmDevice(QKmsScreenConfig *screenConfig, const QString &path)
: QEglFSKmsDevice(screenConfig, path)
, m_gbm_device(nullptr)
, m_globalCursor(nullptr)
{
}
bool QEglFSKmsGbmDevice::open()
{
Q_ASSERT(fd() == -1);
Q_ASSERT(m_gbm_device == nullptr);
int fd = qt_safe_open(devicePath().toLocal8Bit().constData(), O_RDWR | O_CLOEXEC);
if (fd == -1) {
qErrnoWarning("Could not open DRM device %s", qPrintable(devicePath()));
return false;
}
qCDebug(qLcEglfsKmsDebug) << "Creating GBM device for file descriptor" << fd
<< "obtained from" << devicePath();
m_gbm_device = gbm_create_device(fd);
if (!m_gbm_device) {
qErrnoWarning("Could not create GBM device");
qt_safe_close(fd);
fd = -1;
return false;
}
setFd(fd);
if (usesEventReader()) {
qCDebug(qLcEglfsKmsDebug, "Using dedicated drm event reading thread");
m_eventReader.create(this);
} else {
qCDebug(qLcEglfsKmsDebug, "Not using dedicated drm event reading thread; "
"threaded multi-screen setups may experience problems");
}
return true;
}
void QEglFSKmsGbmDevice::close()
{
// Note: screens are gone at this stage.
if (usesEventReader())
m_eventReader.destroy();
if (m_gbm_device) {
gbm_device_destroy(m_gbm_device);
m_gbm_device = nullptr;
}
if (fd() != -1) {
qt_safe_close(fd());
setFd(-1);
}
}
void *QEglFSKmsGbmDevice::nativeDisplay() const
{
return m_gbm_device;
}
gbm_device * QEglFSKmsGbmDevice::gbmDevice() const
{
return m_gbm_device;
}
QPlatformCursor *QEglFSKmsGbmDevice::globalCursor() const
{
return m_globalCursor;
}
// Cannot do this from close(), it may be too late.
// Call this from the last screen dtor instead.
void QEglFSKmsGbmDevice::destroyGlobalCursor()
{
if (m_globalCursor) {
qCDebug(qLcEglfsKmsDebug, "Destroying global GBM mouse cursor");
delete m_globalCursor;
m_globalCursor = nullptr;
}
}
void QEglFSKmsGbmDevice::createGlobalCursor(QEglFSKmsGbmScreen *screen)
{
if (!m_globalCursor && screenConfig()->hwCursor()) {
qCDebug(qLcEglfsKmsDebug, "Creating new global GBM mouse cursor");
m_globalCursor = new QEglFSKmsGbmCursor(screen);
}
}
QPlatformScreen *QEglFSKmsGbmDevice::createScreen(const QKmsOutput &output)
{
QEglFSKmsGbmScreen *screen = new QEglFSKmsGbmScreen(this, output, false);
createGlobalCursor(screen);
return screen;
}
QPlatformScreen *QEglFSKmsGbmDevice::createHeadlessScreen()
{
return new QEglFSKmsGbmScreen(this, QKmsOutput(), true);
}
void QEglFSKmsGbmDevice::registerScreenCloning(QPlatformScreen *screen,
QPlatformScreen *screenThisScreenClones,
const QList<QPlatformScreen *> &screensCloningThisScreen)
{
if (!screenThisScreenClones && screensCloningThisScreen.isEmpty())
return;
QEglFSKmsGbmScreen *gbmScreen = static_cast<QEglFSKmsGbmScreen *>(screen);
gbmScreen->initCloning(screenThisScreenClones, screensCloningThisScreen);
}
void QEglFSKmsGbmDevice::registerScreen(QPlatformScreen *screen,
bool isPrimary,
const QPoint &virtualPos,
const QList<QPlatformScreen *> &virtualSiblings)
{
QEglFSKmsDevice::registerScreen(screen, isPrimary, virtualPos, virtualSiblings);
if (screenConfig()->hwCursor() && m_globalCursor)
m_globalCursor->reevaluateVisibilityForScreens();
}
bool QEglFSKmsGbmDevice::usesEventReader() const
{
static const bool eventReaderThreadDisabled = qEnvironmentVariableIntValue("QT_QPA_EGLFS_KMS_NO_EVENT_READER_THREAD");
return !eventReaderThreadDisabled;
}
QT_END_NAMESPACE
|
