iio: adc: ad7606: rework available attributes for SW channels

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For SW mode, the oversampling and scales attributes are always present.
So, they can be implemented via a 'read_avail' hook in iio_info.

For HW mode, it's a bit tricky, as these attributes get assigned based on
GPIO definitions.

So, for SW mode, we define a separate AD7606_SW_CHANNEL() macro, and use
that for the SW channels.
And 'ad7606_info_os_range_and_debug' can be renamed to
'ad7606_info_sw_mode' as it is only used for SW mode.

For the 'read_avail' hook, we'll need to allocate the SW scales, so that
they are just returned userspace without any extra processing.
The allocation will happen when then ad7606_state struct is allocated.
The oversampling available parameters don't need any extra processing; they
can just be passed back to userspace (as they are).

Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Link: https://patch.msgid.link/20240919130444.2100447-6-aardelean@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Alexandru Ardelean 2024-09-19 16:04:40 +03:00 • committed by Jonathan Cameron

parent bbd478f2cb

commit 94aab7a0f5

3 changed files with 77 additions and 7 deletions

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52

drivers/iio/adc/ad7606.c

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32

drivers/iio/adc/ad7606.h

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0

drivers/iio/adc/ad7606_spi.

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