tree b622c12df38a7ae5456c1bd59af3b57de2ae2d42
parent 114294d276279d6cda81f9c685452239ea89cdb8
author Charles Keepax <ckeepax@opensource.cirrus.com> 1595501699 +0100
committer Lee Jones <lee.jones@linaro.org> 1597301454 +0100

mfd: madera: Improve handling of regulator unbinding

The current unbinding process for Madera has some issues. The trouble
is runtime PM is disabled as the first step of the process, but
some of the drivers release IRQs causing regmap IRQ to issue a
runtime get which fails. To allow runtime PM to remain enabled during
mfd_remove_devices, the DCVDD regulator must remain available. In
the case of external DCVDD's this is simple, the regulator can simply
be disabled/put after the call to mfd_remove_devices. However, in
the case of an internally supplied DCVDD the regulator needs to be
released after the other MFD children depending on it.

Use the new MFD mfd_remove_devices_late functionality to split
the DCVDD regulator off from the other drivers.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>