[coreboot-gerrit] New patch to review for coreboot: 8e0a60d samus: Enable keyboard backlight
Marc Jones (marc.jones@se-eng.com)
gerrit at coreboot.org
Wed Jan 14 00:01:54 CET 2015
Marc Jones (marc.jones at se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8213
-gerrit
commit 8e0a60d8dcc20a87dbbfa92a9d94b360c2495e18
Author: Duncan Laurie <dlaurie at chromium.org>
Date: Tue Jul 15 13:36:52 2014 -0700
samus: Enable keyboard backlight
- Turn on keyboard backlight early in boot (not resume) path
as a sign of life for the system
- Add ACPI device for keyboard backlight so the kernel can find
and make use of it
BUG=chrome-os-partner:30586
BRANCH=None
TEST=build and boot on samus
Original-Change-Id: Iecaef0ec5c814774e19d7c4a14cb92dc236cfee3
Original-Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/208152
Original-Reviewed-by: Aaron Durbin <adurbin at chromium.org>
(cherry picked from commit e166f76f9bd167468c7637dcce2b9eabf7dce8f0)
Signed-off-by: Marc Jones <marc.jones at se-eng.com>
Change-Id: I47927d97c1586ec09310d014d8fba7d7a3d773c4
---
src/mainboard/google/samus/acpi/mainboard.asl | 18 ++++++++++++++++++
src/mainboard/google/samus/romstage.c | 6 +++++-
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/src/mainboard/google/samus/acpi/mainboard.asl b/src/mainboard/google/samus/acpi/mainboard.asl
index 624aa38..3aea40c 100644
--- a/src/mainboard/google/samus/acpi/mainboard.asl
+++ b/src/mainboard/google/samus/acpi/mainboard.asl
@@ -50,6 +50,24 @@ Scope (\_SB)
Name (_UID, 2)
Name (_PRW, Package() { 14, 0x3 }) // GPIO14
}
+
+ // Keyboard Backlight interface via EC
+ Device (KBLT) {
+ Name (_HID, "GOOG0002")
+ Name (_UID, 1)
+
+ // 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)
+ }
+ }
}
Scope (\_SB.PCI0.I2C0)
diff --git a/src/mainboard/google/samus/romstage.c b/src/mainboard/google/samus/romstage.c
index c9e13e1..d652859 100644
--- a/src/mainboard/google/samus/romstage.c
+++ b/src/mainboard/google/samus/romstage.c
@@ -25,6 +25,7 @@
#include <broadwell/gpio.h>
#include <broadwell/pei_data.h>
#include <broadwell/pei_wrapper.h>
+#include <broadwell/pm.h>
#include <broadwell/romstage.h>
#include <mainboard/google/samus/spd/spd.h>
#include <mainboard/google/samus/gpio.h>
@@ -33,7 +34,10 @@ void mainboard_romstage_entry(struct romstage_params *rp)
{
struct pei_data pei_data;
- post_code(0x32);
+ post_code(0x31);
+
+ if (rp->power_state->prev_sleep_state != SLEEP_STATE_S3)
+ google_chromeec_kbbacklight(100);
printk(BIOS_INFO, "MLB: board version %d\n",
google_chromeec_get_board_version());
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