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a00128dfc8
Currently the GPIO Aggregator does not support interrupts. This means that kernel drivers going from a GPIO to an IRQ using gpiod_to_irq(), and userspace applications using line events do not work. Add interrupt support by providing a gpio_chip.to_irq() callback, which just calls into the parent GPIO controller. Note that this does not implement full interrupt controller (irq_chip) support, so using e.g. gpio-keys with "interrupts" instead of "gpios" still does not work. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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.