iio: adc: ti-ads112c14: implement gain on internal short SYS_MON channel

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Implement support for the programmable gain amplifier on the internal
short SYS_MON channel. This channel is used for calibration, so it is
useful to be able to set the PGA to the same gain as the external
channels. The gain setting is implemented via the `_scale` attribute.

In the future, we may want to support different reference voltages for
this channel, so the scale_available table is populated during probe
rather than being a static table.

Signed-off-by: David Lechner (TI) <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

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David Lechner (TI) 2026-07-14 18:21:29 -05:00 • committed by Jonathan Cameron

parent b7fa84f60f

commit aa372a9abc

1 changed files with 149 additions and 3 deletions

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drivers/iio/adc/ti-ads112c14.c

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