diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2023-09-02 21:46:20 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-10-17 20:25:32 +0100 |
| commit | bee448390e5166d019e9e037194d487ee94399d9 (patch) | |
| tree | 6b9fcdef57d782ec83797f40f87f4c082cb7ea42 /drivers/fpga/tests | |
| parent | 865b080e3229102f160889328ce2e8e97aa65ea0 (diff) | |
iio: afe: rescale: Accept only offset channels
As noted by Jonathan Cameron: it is perfectly legal for a channel
to have an offset but no scale in addition to the raw interface.
The conversion will imply that scale is 1:1.
Make rescale_configure_channel() accept just scale, or just offset
to process a channel.
When a user asks for IIO_CHAN_INFO_OFFSET in rescale_read_raw()
we now have to deal with the fact that OFFSET could be present
but SCALE missing. Add code to simply scale 1:1 in this case.
Link: https://lore.kernel.org/linux-iio/CACRpkdZXBjHU4t-GVOCFxRO-AHGxKnxMeHD2s4Y4PuC29gBq6g@mail.gmail.com/
Fixes: 53ebee949980 ("iio: afe: iio-rescale: Support processed channels")
Fixes: 9decacd8b3a4 ("iio: afe: rescale: Fix boolean logic bug")
Reported-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20230902-iio-rescale-only-offset-v2-1-988b807754c8@linaro.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/fpga/tests')
0 files changed, 0 insertions, 0 deletions