[coreboot-gerrit] Change in coreboot[master]: mb/google/dedede/var/madoo: Support Elan touchpad and configure I2C p...

[Dtrain Hsu (Code Review)]

Dtrain Hsu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/44052 )

Change subject: mb/google/dedede/var/madoo: Support Elan touchpad and configure I2C ports
......................................................................

mb/google/dedede/var/madoo: Support Elan touchpad and configure I2C ports

1. Add Elan touchpad support.
2. Follow schematic to disable I2C1 and I2C3.

BUG=b:160869188,b:161407664
BRANCH=NONE
TEST=emerge-dedede coreboot chromeos-bootimage", build successful

Signed-off-by: Dtrain Hsu 
Change-Id: I154a1ff2597968d200d1d0693718f90cd2744616
---
M src/mainboard/google/dedede/variants/madoo/gpio.c
M src/mainboard/google/dedede/variants/madoo/overridetree.cb
2 files changed, 26 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/52/44052/1

diff --git a/src/mainboard/google/dedede/variants/madoo/gpio.c b/src/mainboard/google/dedede/variants/madoo/gpio.c
index f9f8ea2..314d39e 100644
--- a/src/mainboard/google/dedede/variants/madoo/gpio.c
+++ b/src/mainboard/google/dedede/variants/madoo/gpio.c
@@ -5,6 +5,10 @@

/* Pad configuration in ramstage */
 static const struct pad_config override_gpio_table[] = {
+	/* C18 : AP_I2C_EMR_SDA */
+	PAD_NC(GPP_C18, NONE),
+	/* C19 : AP_I2C_EMR_SCL */
+	PAD_NC(GPP_C19, NONE),
    /* D12 : WCAM_RST_L */
    PAD_NC(GPP_D12, NONE),
    /* D13 : EN_PP2800_CAMERA */
diff --git a/src/mainboard/google/dedede/variants/madoo/overridetree.cb b/src/mainboard/google/dedede/variants/madoo/overridetree.cb
index f8e2b06..3f99927 100644
--- a/src/mainboard/google/dedede/variants/madoo/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/madoo/overridetree.cb
@@ -6,6 +6,15 @@
    register "usb2_ports[5]" = "USB2_PORT_MID(OC_SKIP)"	# Camera
    register "usb3_ports[2]" = "USB3_PORT_EMPTY"	    # Not Used

+	register "SerialIoI2cMode" = "{
+		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C2]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C4]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled,
+	}"
+
    # Intel Common SoC Config
    #+-------------------+---------------------------+
    #| Field             |  Value                    |
@@ -15,7 +24,7 @@
    #|                   | for TPM communication     |
    #|                   | before memory is up       |
    #| I2C0              | Trackpad                  |
-	#| I2C1              | Digitizer                 |
+	#| I2C1              |                           |
    #| I2C2              | Touchscreen               |
    #| I2C3              |                           |
    #| I2C4              | Audio                     |
@@ -28,9 +37,6 @@
    	.i2c[0] = {
    		.speed = I2C_SPEED_FAST,
    	},
-		.i2c[1] = {
-			.speed = I2C_SPEED_FAST,
-		},
    	.i2c[2] = {
    		.speed = I2C_SPEED_FAST,
    	},
@@ -56,7 +62,17 @@
    			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 on
    		chip drivers/i2c/hid
    			register "generic.hid" = ""GDIX0000""
@@ -74,6 +90,7 @@
    			device i2c 0x5d on end
    		end
    	end # I2C 2
+		device pci 15.3 off  end # I2C 3
    	device pci 1c.7 on end
    	device pci 19.0 on
    		chip drivers/i2c/generic