Change in coreboot[master]: google/lars: Turn on keyboard backlight in romstage

[Matt DeVillier (Code Review)]

Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/23572

Change subject: google/lars: Turn on keyboard backlight in romstage
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google/lars: Turn on keyboard backlight in romstage

Cherry-pick from Chromium:
a60ac10 [Lars: Turn on keyboard backlight in romstage]

Use the keyboard backlight to provide indication that the system is
booting.  This is useful for determining that a system is in S0 and
is running BIOS code.

TEST=boot on Lars and see keyboard backlight come on early

Original-Change-Id: I4fede6cff85f4487cedfbccf6cc24c6380d905e0
Original-Signed-off-by: Jenny TC 
Original-Tested-by: Divagar Mohandass 
Original-Reviewed-by: Duncan Laurie

Change-Id: I4b1fed10d9bd1ae1b265e848417836f816f252f3
Signed-off-by: Matt DeVillier 
---
M src/mainboard/google/lars/romstage.c
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/72/23572/1

diff --git a/src/mainboard/google/lars/romstage.c b/src/mainboard/google/lars/romstage.c
index 926be87..b3ef0d8 100644
--- a/src/mainboard/google/lars/romstage.c
+++ b/src/mainboard/google/lars/romstage.c
@@ -17,6 +17,7 @@

#include <string.h>
 #include <gpio.h>
+#include <ec/google/chromeec/ec.h>
 #include <soc/pei_data.h>
 #include <soc/pei_wrapper.h>
 #include <soc/romstage.h>
@@ -33,6 +34,10 @@
    	GPIO_MEM_CONFIG_3,
    };

+	/* Turn on keyboard backlight to indicate we are booting */
+	if (params->power_state->prev_sleep_state != ACPI_S3)
+		google_chromeec_kbbacklight(25);
+
    params->pei_data->mem_cfg_id = gpio_base2_value(spd_gpios,
    						ARRAY_SIZE(spd_gpios));
    /* Fill out PEI DATA */