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A free and open-source graphics device driver is a software stack which controls computer-graphics hardware and supports graphics-rendering application programming interfaces (APIs) and is released under a free and open-source software license. Graphics device drivers are written for specific hardware to work within a specific operating system ...
Video4Linux ( V4L for short) is a collection of device drivers and an API for supporting realtime video capture on Linux systems. [1] It supports many USB webcams, TV tuners, and related devices, standardizing their output, so programmers can easily add video support to their applications. Video4Linux is responsible for creating V4L2 device ...
udev (userspace /dev) is a device manager for the Linux kernel.As the successor of devfsd and hotplug, udev primarily manages device nodes in the /dev directory. At the same time, udev also handles all user space events raised when hardware devices are added into the system or removed from it, including firmware loading as required by certain devices.
Input/output. v. t. e. In the context of an operating system, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. [ 1] A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware ...
The system call interface of a kernel is the set of all implemented and available system calls in a kernel. In the Linux kernel, various subsystems, such as the Direct Rendering Manager (DRM), define their own system calls, all of which are part of the system call interface. Various issues with the organization of the Linux kernel system calls ...
The system startup stage on embedded Linux system starts by executing the firmware/program on the on-chip boot ROM, which is stored on the storage device of the system like USB flash drive, SD card, eMMC, NAND flash, NOR flash, etc. [5] The sequences of system startup in on-chip boot ROM varies by processors [5] but all include hardware ...
Pseudoterminal. Pseudoterminals as they are used by unix command that records user's input for replaying it later. In some operating systems, including Unix-like systems, a pseudoterminal, pseudotty, or PTY is a pair of pseudo-device endpoints (files) which establish asynchronous, bidirectional communication ( IPC) channel (with two ports ...
Greg Kroah-Hartman is a major Linux kernel developer. As of April 2013, he is the Linux kernel maintainer for the -stable branch, [ 2] the staging subsystem, [ 2] USB, [ 2] driver core, debugfs, kref, kobject, and the sysfs kernel subsystems, [ 2] Userspace I/O (with Hans J. Koch), [ 2] and TTY layer. [ 2] He also created linux-hotplug, the ...