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Enrik Berkhan 2196d1cf4a i2c-algo-pca: Let PCA9564 recover from unacked data byte (state 0x30) ... Currently, the i2c-algo-pca driver does nothing if the chip enters state 0x30 (Data byte in I2CDAT has been transmitted; NOT ACK has been received). Thus, the i2c bus connected to the controller gets stuck afterwards. I have seen this kind of error on a custom board in certain load situations most probably caused by interference or noise. A possible reaction is to let the controller generate a STOP condition. This is documented in the PCA9564 data sheet (2006-09-01) and the same is done for other NACK states as well. Further, state 0x38 isn't handled completely, either. Try to do another START in this case like the data sheet says. As this couldn't be tested, I've added a comment to try to reset the chip if the START doesn't help as suggested by Wolfram Sang. Signed-off-by: Enrik Berkhan <Enrik.Berkhan@ge.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>		16 years ago
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algos	i2c-algo-pca: Let PCA9564 recover from unacked data byte (state 0x30)	16 years ago
busses	i2c: Timeouts off by 1	16 years ago
chips	Move the pcf8591 driver to hwmon	16 years ago
Kconfig	i2c: Let users select algorithm drivers manually again	17 years ago
Makefile	…
i2c-boardinfo.c	…
i2c-core.c	i2c: Let new-style drivers implement attach_adapter	16 years ago
i2c-core.h	…
i2c-dev.c	i2c-dev: Clarify the unit of ioctl I2C_TIMEOUT	16 years ago