Messages in this thread Patch in this message | | | From | Liam Beguin <> | Subject | [PATCH v2 5/8] iio: afe: rescale: add upstream offset support | Date | Mon, 7 Jun 2021 10:47:15 -0400 |
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From: Liam Beguin <lvb@xiphos.com>
Default to using iio_read_channel_processed() if the upstream channel exposes an offset.
When possible, it's preferable to avoid using iio_read_channel_processed() to maintain as much precision as possible.
Signed-off-by: Liam Beguin <lvb@xiphos.com> --- drivers/iio/afe/iio-rescale.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c index 774eb3044edd..e34148d39b39 100644 --- a/drivers/iio/afe/iio-rescale.c +++ b/drivers/iio/afe/iio-rescale.c @@ -148,7 +148,10 @@ static int rescale_configure_channel(struct device *dev, chan->ext_info = rescale->ext_info; chan->type = rescale->cfg->type; - if (iio_channel_has_info(schan, IIO_CHAN_INFO_RAW) || + if (iio_channel_has_info(schan, IIO_CHAN_INFO_OFFSET)) { + dev_info(dev, "found upstream offset, using processed value\n"); + rescale->chan_processed = true; + } else if (iio_channel_has_info(schan, IIO_CHAN_INFO_RAW) || iio_channel_has_info(schan, IIO_CHAN_INFO_SCALE)) { dev_info(dev, "using raw+scale source channel\n"); } else if (iio_channel_has_info(schan, IIO_CHAN_INFO_PROCESSED)) { -- 2.30.1.489.g328c10930387
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