soc/amd/stoneyridge: Add I2C support

BUG=b:69416132
BRANCH=none
TEST=make

Change-Id: Id940af917c9525aba7bc25eea0821f5f36a36653
Signed-off-by: Chris Ching <chingcodes@chromium.org>
Reviewed-on: https://review.coreboot.org/22959
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/soc/amd/stoneyridge/i2c.c b/src/soc/amd/stoneyridge/i2c.c
new file mode 100644
index 0000000000..2837a910be
--- /dev/null
+++ b/src/soc/amd/stoneyridge/i2c.c
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Google
+ *
+ * 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 <drivers/i2c/designware/dw_i2c.h>
+#include <soc/iomap.h>
+
+const uintptr_t i2c_bus_address[] = {	I2C_BASE_ADDRESS,
+					I2C_BASE_ADDRESS + I2C_DEVICE_SIZE * 1,
+					I2C_BASE_ADDRESS + I2C_DEVICE_SIZE * 2,
+					I2C_BASE_ADDRESS + I2C_DEVICE_SIZE * 3,
+					};
+
+
+uintptr_t dw_i2c_base_address(unsigned int bus)
+{
+	return bus < I2C_DEVICE_COUNT ? i2c_bus_address[bus] : 0;
+}