Messages in this thread | | | Date | Tue, 13 Dec 2011 13:10:22 -0600 | From | Rob Herring <> | Subject | Re: [REPOST RFC PATCH 0/3] New "gpio-poweroff" driver to turn off platform devices with GPIOs |
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On 12/13/2011 12:23 PM, Kyle Moffett wrote: > 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.
Leave them there... :)
> 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.
Does the regulator framework gpio-regulator not work for this?
The DT gpio patches look useful on their own.
Rob
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