aboutsummaryrefslogtreecommitdiff
path: root/Documentation/acpi
AgeCommit message (Collapse)Author
2017-02-22arch/x86/acpigen: Provide helper functions for enabling/disabling GPIOFurquan Shaikh
In order to allow GPIOs to be set/clear according to their polarity, provide helper functions that check for polarity and call set/clear SoC functions for generating ACPI code. BUG=None BRANCH=None TEST=Verified that the ACPI code generated remains the same as before for reef. Change-Id: Ie8bdb9dc18e61a4a658f1447d6f1db0b166d9c12 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/18427 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
2016-10-29Documentation: Add documentation for GPIO toggling in ACPI AMLFurquan Shaikh
This document provides information about the different functions that a driver can use for generating ACPI code for toggling GPIO. These functions are expected to be implemented by the SoC. It also defines the different constraints on use of Local variables in ACPI code while implementing these functions. BUG=chrome-os-partner:55988 Change-Id: Ibc03d766afb6d7b75bc0dc9f79920b561f1c4a78 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/17128 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>