mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 20:57:35 +00:00
Kernel/SysFS: Add exposing interface for DisplayConnectors
Under normal conditions (when mounting SysFS in /sys), there will be a new directory in the /sys/devices directory called "graphics". For now, under that directory there will be only a sub-directory called "connectors" which will contain all DisplayConnectors' details, each in its own sub-directory too, distinguished in naming with its minor number. Therefore, /sys/devices/graphics/connectors/MINOR_NUMBER/ will contain: - General device attributes such as mutable_mode_setting_capable, double_buffering_capable, flush_support, partial_flush_support and refresh_rate_support. These values are exposed in the ioctl interface of the DisplayConnector class too, but these can be useful later on for command line utilities that want/need to expose these basic settings. - The EDID blob, simply named "edid". This will help userspace to fetch the edid without the need of using the ioctl interface later on.
This commit is contained in:
parent
cb900006b9
commit
da8d18b263
12 changed files with 378 additions and 2 deletions
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <Kernel/FileSystem/SysFS/Component.h>
|
||||
#include <Kernel/FileSystem/SysFS/Subsystems/Devices/Graphics/DisplayConnector/DeviceDirectory.h>
|
||||
#include <Kernel/Graphics/DisplayConnector.h>
|
||||
#include <Kernel/KBuffer.h>
|
||||
|
||||
namespace Kernel {
|
||||
|
||||
class DisplayConnectorAttributeSysFSComponent : public SysFSComponent {
|
||||
public:
|
||||
enum class Type {
|
||||
MutableModeSettingCapable,
|
||||
DoubleFrameBufferingCapable,
|
||||
FlushSupport,
|
||||
PartialFlushSupport,
|
||||
RefreshRateSupport,
|
||||
EDID,
|
||||
};
|
||||
|
||||
public:
|
||||
static NonnullRefPtr<DisplayConnectorAttributeSysFSComponent> must_create(DisplayConnectorSysFSDirectory const& device_directory, Type);
|
||||
|
||||
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
|
||||
virtual ~DisplayConnectorAttributeSysFSComponent() {};
|
||||
|
||||
virtual StringView name() const override;
|
||||
|
||||
protected:
|
||||
ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
|
||||
DisplayConnectorAttributeSysFSComponent(DisplayConnectorSysFSDirectory const& device, Type);
|
||||
NonnullRefPtr<DisplayConnector> m_device;
|
||||
Type const m_type { Type::MutableModeSettingCapable };
|
||||
};
|
||||
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue