[coreboot-gerrit] Change in coreboot[master]: drivers/generic: Add new driver for power resource pseudo-device

[Tim Wawrzynczak (Code Review)]

Hello Aaron Durbin, Patrick Rudolph, Julius Werner, Subrata Banik, Duncan Laurie, Paul Menzel, build bot (Jenkins), Nico Huber, Furquan Shaikh, Patrick Georgi, Martin Roth,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/35073

to look at the new patch set (#5).

Change subject: drivers/generic: Add new driver for power resource pseudo-device
......................................................................

drivers/generic: Add new driver for power resource pseudo-device

There is some duplication of fields dealing with ACPI power resources
(see drivers/i2c/generic.c, also used by drivers/i2c/hid, as well as
drivers/spi/acpi).  This CL creates a new driver for this pseudo-device.
It will also enable the sharing of power resources between multiple
devices in the future, if they share power-related signals.

This would change the (effective) ASL from something like this:

Scope (_SB.PCI0)
{
    Device (I2C0)
    {
    	...
    	PowerResource (PRIC, 0, 0)
    	{
    		Method (_ON) ...
    		Method (_OFF) ...
    	}
    	Name (_PR0, Package (1) { PRIC } )
    	Name (_PR3, Package (1) { PRIC } )
    }
}

to something more like this:

Scope (_SB.PCI0.I2C0)
{
    PowerResource (PR00, 0, 0)
    {
    	Method (_ON)...
    	Method (_OFF)...
    }
}

Scope (_SB.PCI0)
{
    Device (I2C0)
    {
    	...
    	Name (_PR0, Package (1) { PR00 } )
    	Name (_PR3, Package (1) { PR00 } )
    }
}

Change-Id: Id9d66fedd342eb5359d90d9778c515e7aa2de1d7
Signed-off-by: Tim Wawrzynczak 
---
A src/drivers/generic/power_resource/Kconfig
A src/drivers/generic/power_resource/Makefile.inc
A src/drivers/generic/power_resource/chip.h
A src/drivers/generic/power_resource/power_resource.c
4 files changed, 128 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/73/35073/5