This patch series aims at enabling IRQ-less operation for the TI OPT3001 light sensor. The current version of the driver requires an interrupt line to be connected to the INT pin of the sensor, through which the IIO framework gets notified about readout values being ready. In the datasheet this is described as optional (sec. 8.1.1). In my use case of the OPT3001 I do not have any interrupt lines or GPIOs available to connect the INT pin to, so I have implemented an interrupt-less operation mode that simply sleeps for the specified worst-case readout time instead of waiting for the interrupt. This change is transparent as interrupt-less operation mode is done only when no valid interrupt no. is configured via device tree. Patches are taken against linux-next/master, tested by compilation, checkpatch.pl and by running on an embedded developer board (both IRQ-enabled and IRQ-less mode). Changes from v1: - use type bool for introduced member 'use_irq' - include trivial refactoring step that changes the types of two other members to bool, in order to match 'use_irq' Alexander Koch (3): iio: light: opt3001: extract int. time constants iio: light: opt3001: trivial type refactoring iio: light: opt3001: enable operation w/o IRQ drivers/iio/light/opt3001.c | 156 ++++++++++++++++++++++++++++++-------------- 1 file changed, 106 insertions(+), 50 deletions(-) -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
