diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2015-12-07 19:49:01 +0530 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2016-01-15 12:03:15 +0100 |
| commit | fbc4609265dab70e09b2f59e4f93f60f81c110c4 (patch) | |
| tree | 25c03ec7c214a037b62af8d912652bd368e5304b /src/soc | |
| parent | b7a42d388b97c7956dd648fc2f49195142a8b4e2 (diff) | |
| download | coreboot-fbc4609265dab70e09b2f59e4f93f60f81c110c4.tar.xz | |
intel/skylake: Add GPIO ACPI Apis.
GPIO ASL APIs to get GPIO Value.
Need such APIs to read GPIO config settings.
Example: Kunimitsu need to read AUDIO_DB GPIO
to identify codec select.
BUG=chrome-os-partner:44481
BRANCH=none
TEST=build and boot on Kunimitsu.
Change-Id: If56bb7b3eae08e1949d372850a6426dfde5aadd0
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 4983ba835a8da2baf578b035ae482755983c1ecb
Original-Change-Id: Ia40d86c8d4b14857fa8822677b3f7d393a35b677
Original-Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/316352
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12956
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/skylake/acpi/gpio.asl | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi/gpio.asl b/src/soc/intel/skylake/acpi/gpio.asl index 42f2ee7770..d305e91850 100644 --- a/src/soc/intel/skylake/acpi/gpio.asl +++ b/src/soc/intel/skylake/acpi/gpio.asl @@ -13,6 +13,7 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ +#include <soc/gpio_defs.h> Device (GPIO) { @@ -67,3 +68,48 @@ Device (GPIO) Return (0xF) } } + +/* + * Get GPIO DW0 Address + * Arg0 - GPIO Number + */ +Method (GADD, 1, NotSerialized) +{ + /* GPIO Community 0 */ + If (LAnd (LGreaterEqual (Arg0, GPP_A0), LLessEqual (Arg0, GPP_B23))) + { + Store (PID_GPIOCOM0, Local0) + Subtract (Arg0, GPP_A0, Local1) + } + /* GPIO Community 1 */ + If (LAnd (LGreaterEqual (Arg0, GPP_C0), LLessEqual (Arg0, GPP_E23))) + { + Store (PID_GPIOCOM1, Local0) + Subtract (Arg0, GPP_C0, Local1) + } + /* GPIO Community 03*/ + If (LAnd (LGreaterEqual (Arg0, GPP_F0), LLessEqual (Arg0, GPP_G7))) + { + Store (PID_GPIOCOM3, Local0) + Subtract (Arg0, GPP_F0, Local1) + } + Store (PCRB (Local0), Local2) + Add (Local2, PAD_CFG_DW_OFFSET, Local2) + Return (Add (Local2, Multiply (Local1, 8))) +} + +/* + * Get GPIO Value + * Arg0 - GPIO Number + */ +Method (GRXS, 1, NotSerialized) +{ + OperationRegion (PREG, SystemMemory, GADD (Arg0), 4) + Field (PREG, AnyAcc, NoLock, Preserve) + { + VAL0, 32 + } + And (GPIORXSTATE_MASK, ShiftRight (VAL0, GPIORXSTATE_SHIFT), Local0) + + Return (Local0) +} |