[coreboot-gerrit] New patch to review for coreboot: glados: Add touchscreen device in ACPI
Aaron Durbin (adurbin@chromium.org)
gerrit at coreboot.org
Wed Aug 19 16:10:34 CEST 2015
Aaron Durbin (adurbin at chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11278
-gerrit
commit 8c4ed4d185c9a9ac8f89e555af7eed72273f0227
Author: Duncan Laurie <dlaurie at chromium.org>
Date: Thu Aug 13 12:27:56 2015 -0700
glados: Add touchscreen device in ACPI
Add the ELAN touchscreen device in ACPI to bind it to the I2C
device at bus I2C0, address 0x10, interrupt 31 (GPP_E7).
BUG=chrome-os-partner:43514
BRANCH=none
TEST=boot on glados P2 and see touchscreen initialized by kernel
Original-Change-Id: I23b071b2767547baed239c94216cda6162d045dd
Original-Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/293512
Original-Reviewed-by: Aaron Durbin <adurbin at chromium.org>
Change-Id: I8a9492e6fa1f650cef0871329ae8944caffdaf5a
Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
---
src/mainboard/google/glados/acpi/mainboard.asl | 35 ++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/src/mainboard/google/glados/acpi/mainboard.asl b/src/mainboard/google/glados/acpi/mainboard.asl
index f955bb7..e2a1b5f 100644
--- a/src/mainboard/google/glados/acpi/mainboard.asl
+++ b/src/mainboard/google/glados/acpi/mainboard.asl
@@ -22,6 +22,9 @@
#define BOARD_TOUCHPAD_I2C_ADDR 0x15
#define BOARD_TOUCHPAD_IRQ GPP_B3_IRQ
+#define BOARD_TOUCHSCREEN_I2C_ADDR 0x10
+#define BOARD_TOUCHSCREEN_IRQ GPP_E7_IRQ
+
#define BOARD_HP_MIC_CODEC_I2C_ADDR 0x1a
#define BOARD_LEFT_SPEAKER_AMP_I2C_ADDR 0x34
#define BOARD_RIGHT_SPEAKER_AMP_I2C_ADDR 0x35
@@ -72,6 +75,38 @@ Scope (\_SB.PCI0.LPCB)
#include <drivers/pc80/tpm/acpi/tpm.asl>
}
+Scope (\_SB.PCI0.I2C0)
+{
+ /* Touchscreen */
+ Device (ELTS)
+ {
+ Name (_HID, "ELAN0001")
+ Name (_DDN, "Elan Touchscreen")
+ Name (_UID, 1)
+ Name (_S0W, 4)
+
+ Name (_CRS, ResourceTemplate()
+ {
+ I2cSerialBus (
+ BOARD_TOUCHSCREEN_I2C_ADDR,
+ ControllerInitiated,
+ 400000,
+ AddressingMode7Bit,
+ "\\_SB.PCI0.I2C0",
+ )
+ Interrupt (ResourceConsumer, Edge, ActiveLow)
+ {
+ BOARD_TOUCHSCREEN_IRQ
+ }
+ })
+
+ Method (_STA)
+ {
+ Return (0xF)
+ }
+ }
+}
+
Scope (\_SB.PCI0.I2C1)
{
/* Touchpad */
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