[coreboot-gerrit] New patch to review for coreboot: google/reef: Enable touchscreen in ACPI
Furquan Shaikh (furquan@google.com)
gerrit at coreboot.org
Wed Jun 29 22:07:22 CEST 2016
Furquan Shaikh (furquan at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15499
-gerrit
commit ad1123017b504795e613ec6004e7d1eac4f74f5f
Author: Furquan Shaikh <furquan at google.com>
Date: Wed Jun 29 13:06:52 2016 -0700
google/reef: Enable touchscreen in ACPI
Add support for ELAN touchscreen on I2C3.
Change-Id: Id8b07a3a3fd4beca0d7ce804ba8d6859275c70d9
Signed-off-by: Furquan Shaikh <furquan at google.com>
---
src/mainboard/google/reef/acpi/mainboard.asl | 32 ++++++++++++++++++++++++++++
src/mainboard/google/reef/gpio.h | 1 +
2 files changed, 33 insertions(+)
diff --git a/src/mainboard/google/reef/acpi/mainboard.asl b/src/mainboard/google/reef/acpi/mainboard.asl
index 5471488..d6f9289 100644
--- a/src/mainboard/google/reef/acpi/mainboard.asl
+++ b/src/mainboard/google/reef/acpi/mainboard.asl
@@ -33,6 +33,38 @@ Scope (\_SB)
}
}
+Scope (\_SB.PCI0.I2C3)
+{
+ Device (ETSA)
+ {
+ Name (_HID, "ELAN0001")
+ Name (_DDN, "Elan Touchscreen")
+ Name (_UID, 1)
+ Name (ISTP, 0) /* TouchScreen */
+ Name (_S0W, 4)
+
+ Name (_CRS, ResourceTemplate()
+ {
+ I2cSerialBus (
+ 0x10, // SlaveAddress
+ ControllerInitiated, // SlaveMode
+ 400000, // ConnectionSpeed
+ AddressingMode7Bit, // AddressingMode
+ "\\_SB.PCI0.I2C3", // ResourceSource
+ )
+ Interrupt (ResourceConsumer, Edge, ActiveLow)
+ {
+ TOUCHSCREEN_INT
+ }
+ })
+
+ Method (_STA)
+ {
+ Return (0xF)
+ }
+ }
+}
+
Scope (\_SB.PCI0.I2C4)
{
/* Standard Mode: HCNT, LCNT, SDA Hold Register */
diff --git a/src/mainboard/google/reef/gpio.h b/src/mainboard/google/reef/gpio.h
index b41f5f9..b491dfe 100644
--- a/src/mainboard/google/reef/gpio.h
+++ b/src/mainboard/google/reef/gpio.h
@@ -20,6 +20,7 @@
/* Input device interrupt configuration */
#define TOUCHPAD_INT GPIO_18_IRQ
+#define TOUCHSCREEN_INT GPIO_21_IRQ
#ifndef __ACPI__
/*
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