path: root/Documentation/i2c/smbus-protocol
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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-30 15:54:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-30 15:54:59 -0700
commit839d8810747bbf39e0a5a7f223b67bffa7945f8d (patch)
treec16583342b871107f6805c21da4b1a96cfaa7aac /Documentation/i2c/smbus-protocol
parent0cfdc724390fb9370f27bb9a133eadf69114dd21 (diff)
parent06a67848c6681a73e621e47c056490d51a07289f (diff)
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/stagingHEADmedia_fixesmaster
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: i2c: Functions for byte-swapped smbus_write/read_word_data i2c-algo-pca: Return standard fault codes i2c-algo-bit: Return standard fault codes i2c-algo-bit: Be verbose on bus testing failure i2c-algo-bit: Let user test buses without failing i2c/scx200_acb: Fix section mismatch warning in scx200_pci_drv i2c: I2C_ELEKTOR should depend on HAS_IOPORT
Diffstat (limited to 'Documentation/i2c/smbus-protocol')
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()

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