Using the pca963x for a while, I noticed something that may look like some i2c accessing issues where sometimes data was incorrectly written to the bus, possibly because we where not properly locking the i2c reads. Though I'm not familiar enough with the i2c framework to be certain reads need to be locked at all. A patch was added to properly lock i2c access more tightly.
Furthermore there was no method to support inverted outputs. This series adds a property to the device tree to inform the driver that the output is inverted (active-high vs active-low). Additionally, this patch set does some cleanups to please checkpatch, and removes a few magic values. Olliver Schinagl (6): leds: pca963x: Alphabetize headers leds: pca963x: Lock i2c r/w access leds: pca963x: Add defines and remove some magic values leds: pca963x: Reduce magic values leds: pca963x: Inform the output that it is inverted leds: pca963x: Remove whitespace and checkpatch problems Documentation/devicetree/bindings/leds/pca963x.txt | 1 + drivers/leds/leds-pca963x.c | 243 ++++++++++++++------- include/linux/platform_data/leds-pca963x.h | 1 + 3 files changed, 171 insertions(+), 74 deletions(-) -- 2.8.0.rc3
