4b2d688fed
Many Bay Trail and Cherry Trail devices come with a camera attached to Intel's Image Signal Processor. Linux currently does not have a driver for these, so they do not work as a camera. Some of these camera's have a status LED which is controlled through a GPIO in some cases, e.g. on the Asus T100TA and Asus T200TA, there is a firmware issue where the LED gets turned on at boot. This commit adds a Linux LED driver for the camera LED on these devices. This driver will turn the LED off at boot and also allows controlling the LED (so the user can repurpose it) through the sysfs LED interface. Which GPIO is attached to the LED is usually not described in the ACPI tables, so this driver contains per-system info about the GPIO inside the driver. This means that this driver only works on systems the driver knows about. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.