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authorFreddy Paul <freddy.paul@intel.com>2016-05-10 14:04:38 -0700
committerAaron Durbin <adurbin@chromium.org>2016-05-12 04:01:36 +0200
commit74d06f25541dec1cf5063e057d02228c040f409d (patch)
treef4f35908fc1be38eb317bb4c08a5842b448e5ff0
parentfbb3e6c10873d0c55dc477c436d8352b915895ef (diff)
downloadcoreboot-74d06f25541dec1cf5063e057d02228c040f409d.tar.xz
intel/amenia: Enable touchscreen in ACPI
Add support for Elan touchscreen on I2C3 for amenia BUG=None TEST=Boot to Chromium OS and verify if touchscreen is working. Change-Id: Ic75bef0e5878bd5b8c0d727400679663d9f591e3 Signed-off-by: Freddy Paul <freddy.paul@intel.com> Reviewed-on: https://review.coreboot.org/14768 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
-rw-r--r--src/mainboard/intel/amenia/acpi/mainboard.asl32
1 files changed, 32 insertions, 0 deletions
diff --git a/src/mainboard/intel/amenia/acpi/mainboard.asl b/src/mainboard/intel/amenia/acpi/mainboard.asl
index 76c63b725f..35043b0e73 100644
--- a/src/mainboard/intel/amenia/acpi/mainboard.asl
+++ b/src/mainboard/intel/amenia/acpi/mainboard.asl
@@ -47,3 +47,35 @@ Scope (\_SB.PCI0.I2C4)
}
}
+
+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)
+ {
+ GPIO_21_IRQ
+ }
+ })
+
+ Method (_STA)
+ {
+ Return (0xF)
+ }
+ }
+}