From fbc4609265dab70e09b2f59e4f93f60f81c110c4 Mon Sep 17 00:00:00 2001 From: Subrata Banik Date: Mon, 7 Dec 2015 19:49:01 +0530 Subject: 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 Original-Commit-Id: 4983ba835a8da2baf578b035ae482755983c1ecb Original-Change-Id: Ia40d86c8d4b14857fa8822677b3f7d393a35b677 Original-Signed-off-by: Subrata Banik Original-Reviewed-on: https://chromium-review.googlesource.com/316352 Original-Reviewed-by: Aaron Durbin Reviewed-on: https://review.coreboot.org/12956 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/soc/intel/skylake/acpi/gpio.asl | 46 +++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'src/soc') 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 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) +} -- cgit v1.2.3