From aed85c07570fe3ab4abcc3988983930bdc1218e0 Mon Sep 17 00:00:00 2001
From: Ian Feng <ian_feng@compal.corp-partner.google.com>
Date: Wed, 18 Aug 2021 17:27:51 +0800
Subject: [PATCH] mb/google/dedede/var/corori: Configure I2C ports and touchpad

1. Support Elan touchpad.
2. Follow schematic to disable I2C1, I2C2 and I2C3.

BUG=b:197052531
BRANCH=keeby
TEST=FW_NAME="corori" emerge-keeby coreboot

Signed-off-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Change-Id: Ideef57c275432e21f8580d4c5c937909b168d91f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57031
Reviewed-by: Shou-Chieh Hsu <shouchieh@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 .../dedede/variants/corori/overridetree.cb    | 38 ++++++++++++-------
 1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/src/mainboard/google/dedede/variants/corori/overridetree.cb b/src/mainboard/google/dedede/variants/corori/overridetree.cb
index 92d50b90e4..281d3d6c40 100644
--- a/src/mainboard/google/dedede/variants/corori/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/corori/overridetree.cb
@@ -9,29 +9,29 @@ chip soc/intel/jasperlake
 	register "usb3_ports[1]" = "USB3_PORT_EMPTY"	    # None
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"	    # None
 
+	register "SerialIoI2cMode" = "{
+		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C2]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C4]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled,
+	}"
+
 	# Intel Common SoC Config
 	#+-------------------+---------------------------+
 	#| Field             |  Value                    |
 	#+-------------------+---------------------------+
 	#| I2C0              | Trackpad                  |
-	#| I2C1              | Digitizer                 |
-	#| I2C2              | Touchscreen               |
-	#| I2C3              | Camera                    |
+	#| I2C1              |                           |
+	#| I2C2              |                           |
+	#| I2C3              |                           |
 	#| I2C4              | Audio                     |
 	#+-------------------+---------------------------+
 	register "common_soc_config" = "{
 		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
 		},
-		.i2c[1] = {
-			.speed = I2C_SPEED_FAST,
-		},
-		.i2c[2] = {
-			.speed = I2C_SPEED_FAST,
-		},
-		.i2c[3] = {
-			.speed = I2C_SPEED_FAST,
-		},
 		.i2c[4] = {
 			.speed = I2C_SPEED_FAST,
 		},
@@ -64,7 +64,19 @@ chip soc/intel/jasperlake
 				end
 			end
 		end # USB xHCI
-		device pci 15.0 on end
+		device pci 15.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_WAKE_EDGE_LOW(GPP_B3_IRQ)"
+				register "wake" = "GPE0_DW0_03"
+				register "probed" = "1"
+				device i2c 15 on end
+			end
+		end #I2C 0
+		device pci 15.1 off end # I2C 1
+		device pci 15.2 off end # I2C 2
+		device pci 15.3 off end # I2C 3
 		device pci 19.0 on
 			chip drivers/i2c/generic
 				register "hid" = ""10EC5682""