Messages in this thread | | | From | Kyle Moffett <> | Subject | [REPOST RFC PATCH 0/3] New "gpio-poweroff" driver to turn off platform devices with GPIOs | Date | Tue, 13 Dec 2011 13:23:31 -0500 |
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Hello again,
I posted this patch series a few weeks ago and saw no responses, so I tweaked the CC list and am reposting it again for review.
I'm working on support for some custom hardware of ours, and part of the support code is the ability for the software to shutdown the power supply using GPIOs (via an I2C GPIO controller).
I previously had this in my platform code, but it seemed generically useful, so I split it out into a separate module for others to use.
The first two patches are generic of_gpio enhancements, providing some new library functions for requesting lots of GPIOs at once.
The third patch is the actual driver itself. The driver can be used to instantiate a platform device as a whole-machine-poweroff device as we use it on our hardware. Alternatively it can instantiate multiple platform devs at specific locations on the device tree which trigger from the platform_driver->shutdown() callback.
For architectures which are still stuck in the dark ages, this driver also supports being instantiated via legacy platform_data.
The OpenFirmware binding documentation is added in the third patch. Since this is my first cut, it's a little rough, so please be gentle.
I'm interested to know what you all think.
Cheers, Kyle Moffett
-- Interested in my work on the Debian "powerpcspe" port? I'm keeping a blog here: http://pureperl.blogspot.com/
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