[PATCH v2 02/11] drivercore: Bind/unbind power domain on probe/remove

[sboyd@codeaurora.org (Stephen Boyd)]

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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