jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <AK/DeprecatedString.h>
10#include <AK/Platform.h>
11#include <AK/ScopeGuard.h>
12#include <fcntl.h>
13#include <stddef.h>
14#include <stdio.h>
15#include <sys/cdefs.h>
16#include <sys/ioctl.h>
17#include <sys/stat.h>
18#include <sys/sysmacros.h>
19#include <unistd.h>
20
21__BEGIN_DECLS
22
23ALWAYS_INLINE int graphics_connector_get_properties(int fd, GraphicsConnectorProperties* info)
24{
25 return ioctl(fd, GRAPHICS_IOCTL_GET_PROPERTIES, info);
26}
27
28ALWAYS_INLINE int graphics_connector_get_head_edid(int fd, GraphicsHeadEDID* info)
29{
30 // FIXME: Optimize this function to get a minor number instead of a file descriptor.
31 struct stat display_connector_stat;
32 if (auto rc = fstat(fd, &display_connector_stat); rc < 0) {
33 return rc;
34 }
35 auto minor_number = minor(display_connector_stat.st_rdev);
36
37 auto edid_fd = open(DeprecatedString::formatted("/sys/devices/graphics/connectors/{}/edid", minor_number).characters(), O_RDONLY);
38 if (edid_fd < 0) {
39 return edid_fd;
40 }
41
42 ScopeGuard close_on_return([&]() {
43 close(edid_fd);
44 });
45
46 if (auto rc = read(edid_fd, info->bytes, info->bytes_size); rc < 0) {
47 return rc;
48 }
49
50 return 0;
51}
52
53ALWAYS_INLINE int graphics_connector_set_responsible(int fd)
54{
55 return ioctl(fd, GRAPHICS_IOCTL_SET_RESPONSIBLE, nullptr);
56}
57
58ALWAYS_INLINE int graphics_connector_unset_responsible(int fd)
59{
60 return ioctl(fd, GRAPHICS_IOCTL_UNSET_RESPONSIBLE, nullptr);
61}
62
63ALWAYS_INLINE int fb_get_head_vertical_offset_buffer(int fd, GraphicsHeadVerticalOffset* vertical_offset)
64{
65 return ioctl(fd, GRAPHICS_IOCTL_GET_HEAD_VERTICAL_OFFSET_BUFFER, vertical_offset);
66}
67
68ALWAYS_INLINE int fb_set_head_vertical_offset_buffer(int fd, GraphicsHeadVerticalOffset* vertical_offset)
69{
70 return ioctl(fd, GRAPHICS_IOCTL_SET_HEAD_VERTICAL_OFFSET_BUFFER, vertical_offset);
71}
72
73ALWAYS_INLINE int graphics_connector_set_head_mode_setting(int fd, GraphicsHeadModeSetting* mode_setting)
74{
75 return ioctl(fd, GRAPHICS_IOCTL_SET_HEAD_MODE_SETTING, mode_setting);
76}
77
78ALWAYS_INLINE int graphics_connector_set_safe_head_mode_setting(int fd)
79{
80 return ioctl(fd, GRAPHICS_IOCTL_SET_SAFE_HEAD_MODE_SETTING, nullptr);
81}
82
83ALWAYS_INLINE int graphics_connector_get_head_mode_setting(int fd, GraphicsHeadModeSetting* mode_setting)
84{
85 GraphicsHeadModeSetting head_mode_setting;
86 if (auto rc = ioctl(fd, GRAPHICS_IOCTL_GET_HEAD_MODE_SETTING, &head_mode_setting); rc < 0)
87 return rc;
88 mode_setting->horizontal_stride = head_mode_setting.horizontal_stride;
89 mode_setting->pixel_clock_in_khz = head_mode_setting.pixel_clock_in_khz;
90 mode_setting->horizontal_active = head_mode_setting.horizontal_active;
91 mode_setting->horizontal_front_porch_pixels = head_mode_setting.horizontal_front_porch_pixels;
92 mode_setting->horizontal_sync_time_pixels = head_mode_setting.horizontal_sync_time_pixels;
93 mode_setting->horizontal_blank_pixels = head_mode_setting.horizontal_blank_pixels;
94 mode_setting->vertical_active = head_mode_setting.vertical_active;
95 mode_setting->vertical_front_porch_lines = head_mode_setting.vertical_front_porch_lines;
96 mode_setting->vertical_sync_time_lines = head_mode_setting.vertical_sync_time_lines;
97 mode_setting->vertical_blank_lines = head_mode_setting.vertical_blank_lines;
98 mode_setting->horizontal_offset = head_mode_setting.horizontal_offset;
99 mode_setting->vertical_offset = head_mode_setting.vertical_offset;
100 return 0;
101}
102
103ALWAYS_INLINE int fb_flush_buffers(int fd, int index, FBRect const* rects, unsigned count)
104{
105 FBFlushRects fb_flush_rects;
106 fb_flush_rects.buffer_index = index;
107 fb_flush_rects.count = count;
108 fb_flush_rects.rects = rects;
109 return ioctl(fd, GRAPHICS_IOCTL_FLUSH_HEAD_BUFFERS, &fb_flush_rects);
110}
111
112ALWAYS_INLINE int fb_flush_head(int fd)
113{
114 return ioctl(fd, GRAPHICS_IOCTL_FLUSH_HEAD, nullptr);
115}
116
117__END_DECLS