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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.
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12 changed files with 378 additions and 2 deletions
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@ -156,6 +156,10 @@ set(KERNEL_SOURCES
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FileSystem/SysFS/Subsystems/Devices/Storage/DeviceAttribute.cpp
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FileSystem/SysFS/Subsystems/Devices/Storage/DeviceDirectory.cpp
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FileSystem/SysFS/Subsystems/Devices/Storage/Directory.cpp
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FileSystem/SysFS/Subsystems/Devices/Graphics/Directory.cpp
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FileSystem/SysFS/Subsystems/Devices/Graphics/DisplayConnector/Directory.cpp
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FileSystem/SysFS/Subsystems/Devices/Graphics/DisplayConnector/DeviceDirectory.cpp
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FileSystem/SysFS/Subsystems/Devices/Graphics/DisplayConnector/DeviceAttribute.cpp
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FileSystem/SysFS/Subsystems/Devices/Directory.cpp
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FileSystem/SysFS/Subsystems/Firmware/BIOS/Component.cpp
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FileSystem/SysFS/Subsystems/Firmware/BIOS/Directory.cpp
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