1 files changed, 53 insertions, 0 deletions
diff --git a/common/i2c_common.c b/common/i2c_common.c
new file mode 100644
index 0000000000..28779af945
--- /dev/null
+++ b/common/i2c_common.c
@@ -0,0 +1,53 @@
+/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* I2C host commands for Chrome EC */
+
+#include "host_command.h"
+#include "i2c.h"
+#include "system.h"
+
+int i2c_command_read(struct host_cmd_handler_args *args)
+{
+	const struct ec_params_i2c_read *p = args->params;
+	struct ec_response_i2c_read *r = args->response;
+	int data, rv = -1;
+
+	if (system_is_locked())
+		return EC_RES_ACCESS_DENIED;
+
+	if  (p->read_size == 16)
+		rv = i2c_read16(p->port, p->addr, p->offset, &data);
+	else if (p->read_size == 8)
+		rv = i2c_read8(p->port, p->addr, p->offset, &data);
+
+	if (rv)
+		return EC_RES_ERROR;
+	r->data = data;
+	args->response_size = sizeof(*r);
+
+	return EC_RES_SUCCESS;
+}
+DECLARE_HOST_COMMAND(EC_CMD_I2C_READ, i2c_command_read, EC_VER_MASK(0));
+
+int i2c_command_write(struct host_cmd_handler_args *args)
+{
+	const struct ec_params_i2c_write *p = args->params;
+	int rv = -1;
+
+	if (system_is_locked())
+		return EC_RES_ACCESS_DENIED;
+
+	if (p->write_size == 16)
+		rv = i2c_write16(p->port, p->addr, p->offset, p->data);
+	else if (p->write_size == 8)
+		rv = i2c_write8(p->port, p->addr, p->offset, p->data);
+
+	if (rv)
+		return EC_RES_ERROR;
+
+	return EC_RES_SUCCESS;
+}
+DECLARE_HOST_COMMAND(EC_CMD_I2C_WRITE, i2c_command_write, EC_VER_MASK(0));