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| Filename | Latest commit message | Latest commit date |
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a2d21848d9There is bunch of devices with multiple logical blocks which can generate interrupts. It's not a rare case that the interrupt reason registers are arranged so that there is own status/ack/mask register for each logical block. In some devices there is also a 'main interrupt register(s)' which can indicate what sub blocks have interrupts pending. When such a device is connected via slow bus like i2c the main part of interrupt handling latency can be caused by bus accesses. On systems where it is expected that only one (or few) sub blocks have active interrupts we can reduce the latency by only reading the main register and those sub registers which have active interrupts. Support this with regmap-irq for simple cases where main register does not require acking or masking. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.