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| author | Jonathan Cameron | 2011-10-30 13:47:25 +0100 |
|---|---|---|
| committer | Jean Delvare | 2011-10-30 13:47:25 +0100 |
| commit | 06a67848c6681a73e621e47c056490d51a07289f (patch) | |
| tree | df6e3df869b7b1a1f40f09b9b3a6f8b8a2ad12d6 /Documentation/i2c | |
| parent | i2c-algo-pca: Return standard fault codes (diff) | |
| download | kernel-qcow2-linux-06a67848c6681a73e621e47c056490d51a07289f.tar.gz kernel-qcow2-linux-06a67848c6681a73e621e47c056490d51a07289f.tar.xz kernel-qcow2-linux-06a67848c6681a73e621e47c056490d51a07289f.zip | |
i2c: Functions for byte-swapped smbus_write/read_word_data
Reimplemented at least 17 times discounting error mangling cases
where it could be used.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'Documentation/i2c')
| -rw-r--r-- | Documentation/i2c/smbus-protocol | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/i2c/smbus-protocol b/Documentation/i2c/smbus-protocol index 7c19d1a2bea0..49f5b680809d 100644 --- a/Documentation/i2c/smbus-protocol +++ b/Documentation/i2c/smbus-protocol @@ -88,6 +88,10 @@ byte. But this time, the data is a complete word (16 bits). S Addr Wr [A] Comm [A] S Addr Rd [A] [DataLow] A [DataHigh] NA P +Note the convenience function i2c_smbus_read_word_swapped is +available for reads where the two data bytes are the other way +around (not SMBus compliant, but very popular.) + SMBus Write Byte: i2c_smbus_write_byte_data() ============================================== @@ -108,6 +112,10 @@ specified through the Comm byte. S Addr Wr [A] Comm [A] DataLow [A] DataHigh [A] P +Note the convenience function i2c_smbus_write_word_swapped is +available for writes where the two data bytes are the other way +around (not SMBus compliant, but very popular.) + SMBus Process Call: i2c_smbus_process_call() ============================================= |