src/mainboard/intel/cannonlake: Add gpio support for cannonlake

Add gpio pins configuration for cannonlake rvp u/y boards.

Change-Id: Ia077a070979401fe7bd23bda110d2b66a038d9fc
Signed-off-by: john zhao <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/21139
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/mainboard/intel/cannonlake_rvp/chromeos.c

@@ -0,0 +1,64 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/acpi.h>
+#include <baseboard/variants.h>
+#include <gpio.h>
+#include <rules.h>
+#include <soc/gpio.h>
+#include <variant/gpio.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+#if ENV_RAMSTAGE
+#include <boot/coreboot_tables.h>
+
+void fill_lb_gpios(struct lb_gpios *gpios)
+{
+	struct lb_gpio chromeos_gpios[] = {
+		{-1, ACTIVE_HIGH, get_write_protect_state(), "write protect"},
+		{-1, ACTIVE_HIGH, get_recovery_mode_switch(), "recovery"},
+		{-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
+		{-1, ACTIVE_HIGH, 0, "power"},
+		{-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
+	};
+	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
+}
+#endif /* ENV_RAMSTAGE */
+
+int get_lid_switch(void)
+{
+        /* Lid always open */
+        return 1;
+}
+
+int get_recovery_mode_switch(void)
+{
+        return 0;
+}
+
+int get_write_protect_state(void)
+{
+	/* No write protect */
+	return 0;
+}
+
+void mainboard_chromeos_acpi_generate(void)
+{
+	const struct cros_gpio *gpios;
+	size_t num;
+
+	gpios = variant_cros_gpios(&num);
+	chromeos_acpi_gpio_generate(gpios, num);
+}