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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 <jenny.tc@intel.com>
Original-Tested-by: Divagar Mohandass <divagar.mohandass@intel.com>
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

Change-Id: I4b1fed10d9bd1ae1b265e848417836f816f252f3
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/23572
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Jenny TC 2016-02-08 14:44:30 +05:30 committed by Martin Roth
parent 01976815e4
commit 867d0df736
1 changed files with 5 additions and 0 deletions
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5
src/mainboard/google/lars/romstage.c
View File

@ -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 @@ void mainboard_romstage_entry(struct romstage_params *params)
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 */