From e02a05f7435a34c58fcf85f126e2e0085e1adeea Mon Sep 17 00:00:00 2001
From: Vadim Bendebury <vbendeb@chromium.org>
Date: Sun, 22 May 2016 16:09:54 -0700
Subject: [PATCH] gru: kevin: configure board GPIOs

Set board GPIOs as required and add their description into the
appropriate section of the coreboot table, to make them available to
depthcharge.

BRANCH=none
BUG=chrome-os-partner:51537
TEST=with the rest of the patches applied it is possible to use
     keyboard on Gru, which indicates that the EC interrupt GPIO is
     properly configured. The rest of the pins will be verified later.

Change-Id: I82be76bbd3211179e696526a34cc842cb1987e69
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/346631
---
 src/mainboard/google/gru/bootblock.c |  4 ++++
 src/mainboard/google/gru/chromeos.c  | 24 +++++++++++++++++++-----
 src/soc/rockchip/rk3399/Makefile.inc |  2 ++
 3 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/src/mainboard/google/gru/bootblock.c b/src/mainboard/google/gru/bootblock.c
index 1166d8a842..a048188e0a 100644
--- a/src/mainboard/google/gru/bootblock.c
+++ b/src/mainboard/google/gru/bootblock.c
@@ -21,6 +21,8 @@
 #include <soc/spi.h>
 #include <console/console.h>
 
+#include "board.h"
+
 void bootblock_mainboard_early_init(void)
 {
 	/* Let gpio2ab io domains works at 1.8V.
@@ -62,4 +64,6 @@ void bootblock_mainboard_init(void)
 	write32(&rk3399_pmugrf->spi1_csclktx, IOMUX_SPI1_CSCLKTX);
 
 	rockchip_spi_init(CONFIG_BOOT_MEDIA_SPI_BUS, 24750*KHz);
+
+	setup_chromeos_gpios();
 }
diff --git a/src/mainboard/google/gru/chromeos.c b/src/mainboard/google/gru/chromeos.c
index da57d861c6..4265f8d9c1 100644
--- a/src/mainboard/google/gru/chromeos.c
+++ b/src/mainboard/google/gru/chromeos.c
@@ -15,15 +15,22 @@
  */
 
 #include <boot/coreboot_tables.h>
+#include <gpio.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 
+#include "board.h"
+
 void fill_lb_gpios(struct lb_gpios *gpios)
 {
-}
+	struct lb_gpio chromeos_gpios[] = {
+		{GPIO_WP.raw, ACTIVE_LOW, gpio_get(GPIO_WP), "write protect"},
+		{GPIO_BACKLIGHT.raw, ACTIVE_HIGH, -1, "backlight"},
+		{GPIO_EC_IN_RW.raw, ACTIVE_HIGH, -1, "EC in RW"},
+		{GPIO_EC_IRQ.raw, ACTIVE_LOW, -1, "EC interrupt"},
+		{GPIO_RESET.raw, ACTIVE_HIGH, -1, "reset"},
+	};
 
-int get_developer_mode_switch(void)
-{
-	return 0;
+	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
 }
 
 int get_recovery_mode_switch(void)
@@ -33,5 +40,12 @@ int get_recovery_mode_switch(void)
 
 int get_write_protect_state(void)
 {
-	return 0;
+	return !gpio_get(GPIO_WP);
+}
+
+void setup_chromeos_gpios(void)
+{
+	gpio_input(GPIO_WP);
+	gpio_input_pullup(GPIO_EC_IN_RW);
+	gpio_input_pullup(GPIO_EC_IRQ);
 }
diff --git a/src/soc/rockchip/rk3399/Makefile.inc b/src/soc/rockchip/rk3399/Makefile.inc
index edee10f1c1..a814489764 100644
--- a/src/soc/rockchip/rk3399/Makefile.inc
+++ b/src/soc/rockchip/rk3399/Makefile.inc
@@ -47,6 +47,8 @@ romstage-y += ../common/pwm.c
 romstage-y += timer.c
 romstage-y += romstage.c
 romstage-y += tsadc.c
+romstage-y += gpio.c
+romstage-y += ../common/gpio.c
 
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