Add support for Google's Chromebook Pixel

Ladies and gentlemen, I'm very happy to announce coreboot support for
the latest and greatest Google Chromebook: The Chromebook Pixel.

See the link below for more information on the Chromebook Pixel, and
its exciting specs:
http://www.google.com/intl/en/chrome/devices/chromebooks.html#pixel

The device is running coreboot and open source firmware on the EC
(see ChromeEC commit for more information on that exciting topic)

Change-Id: I03d00cf391bbb1a32f330793fe9058493e088571
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2482
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/src/mainboard/google/link/acpi/mainboard.asl b/src/mainboard/google/link/acpi/mainboard.asl
new file mode 100644
index 0000000000..a2778a0e1a
--- /dev/null
+++ b/src/mainboard/google/link/acpi/mainboard.asl
@@ -0,0 +1,103 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+Scope (\_SB) {
+	Device (LID0)
+	{
+		Name(_HID, EisaId("PNP0C0D"))
+		Method(_LID, 0)
+		{
+			Store (\_SB.PCI0.LPCB.EC0.LIDS, \LIDS)
+			Return (\LIDS)
+		}
+
+		// EC_LID_OUT is GPIO15
+		Name(_PRW, Package(){0x1f, 0x05})
+	}
+
+	Device (PWRB)
+	{
+		Name(_HID, EisaId("PNP0C0C"))
+	}
+
+	Device (TPAD)
+	{
+		Name (_ADR, 0x0)
+		Name (_UID, 1)
+
+		// Report as a Sleep Button device so Linux will
+		// automatically enable it as a wake source
+		Name(_HID, EisaId("PNP0C0E"))
+
+		// Trackpad Wake is GPIO12
+		Name(_PRW, Package(){0x1c, 0x03})
+
+		Name(_CRS, ResourceTemplate()
+		{
+			// PIRQE -> GSI20
+			Interrupt (ResourceConsumer, Edge, ActiveLow) {20}
+
+			// SMBUS Address 0x4b
+			VendorShort (ADDR) {0x4b}
+		})
+	}
+
+	Device (TSCR)
+	{
+		Name (_ADR, 0x0)
+		Name (_UID, 2)
+
+		// Report as a Sleep Button device so Linux will
+		// automatically enable it as a wake source
+		Name(_HID, EisaId("PNP0C0E"))
+
+		// Touchscreen Wake is GPIO14
+		Name(_PRW, Package(){0x1e, 0x03})
+
+		Name(_CRS, ResourceTemplate()
+		{
+			// PIRQG -> GSI22
+			Interrupt (ResourceConsumer, Edge, ActiveLow) {22}
+
+			// SMBUS Address 0x4a
+			VendorShort (ADDR) {0x4a}
+		})
+	}
+
+	// Keyboard Backlight interface via EC
+	Device (KBLT) {
+		Name (_HID, EisaId("GGL0002"))
+		Name (_UID, 1)
+		Name (_ADR, 0)
+
+		// Read current backlight value
+		Method (KBQC, 0)
+		{
+			Return (\_SB.PCI0.LPCB.EC0.KBLV)
+		}
+
+		// Write new backlight value
+		Method (KBCM, 1)
+		{
+			Store (Arg0, \_SB.PCI0.LPCB.EC0.KBLV)
+		}
+	}
+}