Chris Packham b460fc9d05 i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665 ... [ Upstream commit cd217f2300 ] The PCA9665 datasheet says that I2CSTA = 78h indicates that SCL is stuck low, this differs to the PCA9564 which uses 90h for this indication. Treat either 0x78 or 0x90 as an indication that the SCL line is stuck. Based on looking through the PCA9564 and PCA9665 datasheets this should be safe for both chips. The PCA9564 should not return 0x78 for any valid state and the PCA9665 should not return 0x90. Fixes: eff9ec95ef ("i2c-algo-pca: Add PCA9665 support") Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-07-09 09:37:54 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
i2c-algo-bit.c	i2c: algo: bit: add flag to whitelist atomic transfers	2019-04-16 13:08:16 +02:00
i2c-algo-pca.c	i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665	2020-07-09 09:37:54 +02:00
i2c-algo-pcf.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
i2c-algo-pcf.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00