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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2015-12-06 23:52:39 -0800 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-12-08 08:38:31 +0100 |
| commit | ba624ae97eea80540f8fa41a812ac732325e380d (patch) | |
| tree | 7feffa5062b932fc388d05e394b981ed3b2d8c79 /include | |
| parent | 2ae9bbba0742d79376eb26252b212913d9181bd8 (diff) | |
| download | barebox-ba624ae97eea80540f8fa41a812ac732325e380d.tar.gz barebox-ba624ae97eea80540f8fa41a812ac732325e380d.tar.xz | |
i2c: Port two utility functions from Linux kernel
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/i2c/i2c.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/i2c/i2c.h b/include/i2c/i2c.h index 33a4791c96..cf784ca1f1 100644 --- a/include/i2c/i2c.h +++ b/include/i2c/i2c.h @@ -194,6 +194,21 @@ extern s32 i2c_smbus_read_word_data(const struct i2c_client *client, 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_i2c_block_data(const struct i2c_client *client, u8 command, u8 length, u8 *values); |