This patchset has 2 intents: 1. We've noticed with newer Sigma-Delta ADCs that the current standard macros (AD_SD_*_CHANNEL()) for defining IIO channels are too rigid when adding new parts that have some slight variations. Two examples that come to mind are AD7124 and AD7192; for the final version of the AD7192 one requirement was to set 'IIO_CHAN_INFO_SCALE' to 'info_mask_shared_by_type_available', which would require a new AD_SD_*_CHANNEL macro-set 2. Similarly to AD7192, for the AD7793 driver, there is a AD7797 part that doesn't need 'IIO_CHAN_INFO_SCALE' for 'info_mask_shared_by_type_available'. While other parts do need it. But the biggest problem in the AD7793 driver, is that we're getting checkpatch patches that try to fix/break the 'in_voltage-voltage_scale_available' sysfs attribute. So, to get that driver away from checkpatch's radar, the read_avail hook is used for AD7793. This patchset comes with a bit of code duplication, but as it seems, this duplication is easier to handle. Alexandru Ardelean (5): iio: adc: ad7780: define/use own IIO channel macros iio: adc: ad7791: define/use own IIO channel macros iio: adc: ad7793: define/use own IIO channel macros iio: ad_sigma_delta: remove unused IIO channel macros iio: adc: ad7793: use read_avail iio hook for scale available drivers/iio/adc/ad7780.c | 27 ++++- drivers/iio/adc/ad7791.c | 62 +++++++++-- drivers/iio/adc/ad7793.c | 142 ++++++++++++++++++------- include/linux/iio/adc/ad_sigma_delta.h | 58 ---------- 4 files changed, 182 insertions(+), 107 deletions(-) -- 2.20.1
