diff options
| author | Venkata Krishna Nimmagadda <venkata.krishna.nimmagadda@intel.com> | 2020-04-07 16:16:38 -0700 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2020-04-29 03:01:22 +0000 |
| commit | f98bbda5fb145287c75e944b7c8d91e7c57a672e (patch) | |
| tree | 7fa7ef6cb1248e03fcd2a3ac2d14fbf57b0809e7 /src/soc | |
| parent | 64f477b401ecc885ba678c77d01757118c84bd55 (diff) | |
soc/intel/common: Add method to modify GPIO community PM config
This patch adds CGPM, a helper method to configure GPIO power management
bits that are part of miscellaneous config. This is needed for
configuration of these bits on S0ix entry and exit.
BUG=b:148892882
BRANCH=none
TEST="BUILD volteer and ripto"
Signed-off-by: Venkata Krishna Nimmagadda <venkata.krishna.nimmagadda@intel.com>
Change-Id: Iac3a269d3071eb5d4100d516249eeb5ce23c02fa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40260
Reviewed-by: Venkata Krishna Nimmagadda <Venkata.krishna.nimmagadda@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/acpi/gpio.asl | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/common/acpi/gpio.asl b/src/soc/intel/common/acpi/gpio.asl new file mode 100644 index 0000000000..364ac73843 --- /dev/null +++ b/src/soc/intel/common/acpi/gpio.asl @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* This file is part of the coreboot project. */ + +/* + * Configure GPIO Power Management bits + * + * Arg0: GPIO community (0-5) + * Arg1: PM bits in MISCCFG + */ +Method (CGPM, 2, Serialized) +{ + Local0 = GPID (Arg0) + If (Local0 != 0) { + /* Mask off current PM bits */ + PCRA (Local0, GPIO_MISCCFG, ~MISCCFG_ENABLE_GPIO_PM_CONFIG) + /* Mask in requested bits */ + PCRO (Local0, GPIO_MISCCFG, Arg1 & MISCCFG_ENABLE_GPIO_PM_CONFIG) + } +} |