From: Liam Beguin <liambeguin@gmail.com>
To: liambeguin@gmail.com, peda@axentia.se, jic23@kernel.org,
lars@metafoo.de, pmeerw@pmeerw.net
Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
devicetree@vger.kernel.org, robh+dt@kernel.org
Subject: [PATCH v2 5/8] iio: afe: rescale: add upstream offset support
Date: Mon, 7 Jun 2021 10:47:15 -0400 [thread overview]
Message-ID: <20210607144718.1724413-6-liambeguin@gmail.com> (raw)
In-Reply-To: <20210607144718.1724413-1-liambeguin@gmail.com>
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
next prev parent reply other threads:[~2021-06-07 14:48 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-07 14:47 [PATCH v2 0/8] iio: afe: add temperature rescaling support Liam Beguin
2021-06-07 14:47 ` [PATCH v2 1/8] iio: inkern: apply consumer scale on IIO_VAL_INT cases Liam Beguin
2021-06-07 14:47 ` [PATCH v2 2/8] iio: inkern: apply consumer scale when no channel scale is available Liam Beguin
2021-06-07 14:47 ` [PATCH v2 3/8] iio: inkern: error out on unsupported offset type Liam Beguin
2021-06-09 20:28 ` Jonathan Cameron
2021-06-09 21:40 ` Liam Beguin
2021-06-10 9:06 ` Jonathan Cameron
2021-06-10 20:42 ` Peter Rosin
2021-06-07 14:47 ` [PATCH v2 4/8] iio: inkern: return valid type on raw to processed conversion Liam Beguin
2021-06-09 20:32 ` Jonathan Cameron
2021-06-09 21:46 ` Liam Beguin
2021-06-10 9:08 ` Jonathan Cameron
2021-06-07 14:47 ` Liam Beguin [this message]
2021-06-07 14:47 ` [PATCH v2 6/8] iio: afe: rescale: add offset support Liam Beguin
2021-06-07 14:47 ` [PATCH v2 7/8] iio: afe: rescale: add temperature sensor support Liam Beguin
2021-06-10 21:23 ` Peter Rosin
2021-06-07 14:47 ` [PATCH v2 8/8] dt-bindings: iio: afe: add binding for temperature-sense-amplifier Liam Beguin
2021-06-09 20:52 ` Jonathan Cameron
2021-06-09 21:50 ` Liam Beguin
2021-06-11 7:37 ` Peter Rosin
2021-06-11 16:12 ` Liam Beguin
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