From d7a364393a7b6f17312ea60bdbfb128f9d897e72 Mon Sep 17 00:00:00 2001
From: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Date: Mon, 28 Dec 2020 15:32:54 +0800
Subject: soc/amd/picasso: Add GRXS and GTXS method

Add GRXS and GTXS into gpiolib. We can align with Intel ACPI method
for the better usage. This benefits acpi.c to be more clear, too.

BUG=b:176270381
BRANCH=zork
TEST=Confirm the Goodix touchscreen functional.

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I1aa6a8f44f20577e679336889c849dd67cb99f2d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48944
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
---
 src/soc/amd/common/acpi/gpio_bank_lib.asl | 34 +++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'src/soc/amd/common')

diff --git a/src/soc/amd/common/acpi/gpio_bank_lib.asl b/src/soc/amd/common/acpi/gpio_bank_lib.asl
index f209f448c1..8640cc114d 100644
--- a/src/soc/amd/common/acpi/gpio_bank_lib.asl
+++ b/src/soc/amd/common/acpi/gpio_bank_lib.asl
@@ -2,6 +2,8 @@
 
 #include <soc/iomap.h>
 
+#define GPIO_INPUT_SHIFT	16
+#define GPIO_INPUT_VALUE	(1 << GPIO_INPUT_SHIFT)
 #define GPIO_OUTPUT_SHIFT	22
 #define GPIO_OUTPUT_VALUE	(1 << GPIO_OUTPUT_SHIFT)
 
@@ -148,3 +150,35 @@ Method (CTXS, 1, Serialized)
 	}
 	VAL0 &= ~GPIO_OUTPUT_VALUE
 }
+
+/*
+ * Get GPIO Input Value
+ * Arg0 - GPIO Number
+ */
+Method (GRXS, 1, Serialized)
+{
+	OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
+	Field (GPDW, AnyAcc, NoLock, Preserve)
+	{
+		VAL0, 32
+	}
+	Local0 = (GPIO_INPUT_VALUE & VAL0) >> GPIO_INPUT_SHIFT
+
+	Return (Local0)
+}
+
+/*
+ * Get GPIO Output Value
+ * Arg0 - GPIO Number
+ */
+Method (GTXS, 1, Serialized)
+{
+	OperationRegion (GPDW, SystemMemory, GPAD (Arg0), 4)
+	Field (GPDW, AnyAcc, NoLock, Preserve)
+	{
+		VAL0, 32
+	}
+	Local0 = (GPIO_OUTPUT_VALUE & VAL0) >> GPIO_OUTPUT_SHIFT
+
+	Return (Local0)
+}
-- 
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