1 files changed, 22 insertions, 5 deletions

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index a6c652ef516d..a81bf6d23b3e 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -28,12 +28,12 @@
 
 #include <linux/types.h>
 #ifdef __KERNEL__
-#include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/device.h>       /* for struct device */
 #include <linux/sched.h>        /* for completion */
 #include <linux/mutex.h>
 #include <linux/of.h>           /* for struct device_node */
+#include <linux/swab.h>         /* for swab16 */
 
 extern struct bus_type i2c_bus_type;
 extern struct device_type i2c_adapter_type;
@@ -48,6 +48,8 @@ struct i2c_driver;
 union i2c_smbus_data;
 struct i2c_board_info;
 
+struct module;
+
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 /*
  * The master routines are the ones normally used to transmit data to devices
@@ -88,6 +90,22 @@ extern s32 i2c_smbus_read_word_data(const struct i2c_client *client,
                                     u8 command);
 extern s32 i2c_smbus_write_word_data(const struct i2c_client *client,
                                      u8 command, u16 value);
+
+static inline s32
+i2c_smbus_read_word_swapped(const struct i2c_client *client, u8 command)
+{
+        s32 value = i2c_smbus_read_word_data(client, command);
+
+        return (value < 0) ? value : swab16(value);
+}
+
+static inline s32
+i2c_smbus_write_word_swapped(const struct i2c_client *client,
+                             u8 command, u16 value)
+{
+        return i2c_smbus_write_word_data(client, command, swab16(value));
+}
+
 /* Returns the number of read bytes */
 extern s32 i2c_smbus_read_block_data(const struct i2c_client *client,
                                      u8 command, u8 *values);
@@ -434,10 +452,9 @@ extern int i2c_add_numbered_adapter(struct i2c_adapter *);
 extern int i2c_register_driver(struct module *, struct i2c_driver *);
 extern void i2c_del_driver(struct i2c_driver *);
 
-static inline int i2c_add_driver(struct i2c_driver *driver)
-{
-        return i2c_register_driver(THIS_MODULE, driver);
-}
+/* use a define to avoid include chaining to get THIS_MODULE */
+#define i2c_add_driver(driver) \
+        i2c_register_driver(THIS_MODULE, driver)
 
 extern struct i2c_client *i2c_use_client(struct i2c_client *client);
 extern void i2c_release_client(struct i2c_client *client);