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-rw-r--r--include/linux/i2c.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index a6c652ef516d..38a21c3edd2c 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -34,6 +34,7 @@
#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;
@@ -88,6 +89,22 @@ 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);

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