1 files changed, 41 insertions, 0 deletions
diff --git a/src/soc/intel/common/lpss_i2c.h b/src/soc/intel/common/lpss_i2c.h
new file mode 100644
index 0000000000..82594147fd
--- /dev/null
+++ b/src/soc/intel/common/lpss_i2c.h
@@ -0,0 +1,41 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * 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.
+ */
+
+#ifndef SOC_INTEL_COMMON_LPSS_I2C_H
+#define SOC_INTEL_COMMON_LPSS_I2C_H
+
+#include <device/i2c.h>
+#include <stdint.h>
+
+/*
+ * Return the base address for this bus controller.
+ *
+ * This function *must* be implemented by the SOC and return the appropriate
+ * base address for the I2C registers that correspond to the provided bus.
+ */
+uintptr_t lpss_i2c_base_address(unsigned bus);
+
+/*
+ * Initialize this bus controller and set the speed.
+ *
+ * The bus speed can be passed in Hz or using values from device/i2c.h and
+ * will default to I2C_SPEED_FAST if it is not provided.
+ *
+ * The SOC *must* define CONFIG_SOC_INTEL_COMMON_LPSS_I2C_CLOCK for the
+ * bus speed calculation to be correct.
+ */
+void lpss_i2c_init(unsigned bus, enum i2c_speed speed);
+
+#endif