[coreboot-gerrit] New patch to review for coreboot: intel/skylake: Add GPIO ACPI Apis.

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12956

-gerrit

commit 8375241fcdc19e926bce41fc905bccb4eeac818a
Author: Subrata Banik <subrata.banik at intel.com>
Date:   Mon Dec 7 19:49:01 2015 +0530

    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 at chromium.org>
    Original-Commit-Id: 4983ba835a8da2baf578b035ae482755983c1ecb
    Original-Change-Id: Ia40d86c8d4b14857fa8822677b3f7d393a35b677
    Original-Signed-off-by: Subrata Banik <subrata.banik at intel.com>
    Original-Reviewed-on: https://chromium-review.googlesource.com/316352
    Original-Reviewed-by: Aaron Durbin <adurbin at chromium.org>
---
 src/soc/intel/skylake/acpi/gpio.asl | 46 +++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/src/soc/intel/skylake/acpi/gpio.asl b/src/soc/intel/skylake/acpi/gpio.asl
index 42f2ee7..d305e91 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)
+}