Messages in this thread | | | Date | Tue, 4 Mar 2014 10:29:22 -0800 | From | Stephen Boyd <> | Subject | Re: [PATCH v2 02/11] drivercore: Bind/unbind power domain on probe/remove |
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On 03/03, Tomasz Figa wrote: > On a number of platforms, devices are part of controllable power > domains, which need to be enabled before such devices can be accessed > and may be powered down when the device is idle to save some power. > This means that on systems that support power domain control using > generic power domains subsystem, it is necessary to add device to its > power domain before binding a driver to it and remove it from its power > domain after its driver is unbound to make sure that an unused device > does not affect power domain state. > > Since this is not limited to particular busses and specific > archs/platforms, it is more convenient to do the above directly in > driver core, just as done with pinctrl default configuration. This patch > adds necessary code to really_probe() and __device_release_driver() to > achieve this and maintain consistent stack-like ordering of operations > happening when binding and unbinding a driver. > > Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
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