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[198.48.202.89]) by smtp.gmail.com with ESMTPSA id z1sm6382601qki.47.2021.05.29.17.59.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 29 May 2021 17:59:31 -0700 (PDT) From: Liam Beguin 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 v1 4/9] iio: afe: rescale: add offset support Date: Sat, 29 May 2021 20:59:12 -0400 Message-Id: <20210530005917.20953-5-liambeguin@gmail.com> X-Mailer: git-send-email 2.30.1.489.g328c10930387 In-Reply-To: <20210530005917.20953-1-liambeguin@gmail.com> References: <20210530005917.20953-1-liambeguin@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Liam Beguin This is a preparatory change required for the addition of temperature sensing front ends. Signed-off-by: Liam Beguin --- drivers/iio/afe/iio-rescale.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c index 4d0813b274d1..3bd1f11f21db 100644 --- a/drivers/iio/afe/iio-rescale.c +++ b/drivers/iio/afe/iio-rescale.c @@ -31,6 +31,7 @@ struct rescale { struct iio_chan_spec_ext_info *ext_info; s32 numerator; s32 denominator; + s32 offset; }; static int rescale_read_raw(struct iio_dev *indio_dev, @@ -52,6 +53,10 @@ static int rescale_read_raw(struct iio_dev *indio_dev, *val2 = rescale->denominator; return IIO_VAL_FRACTIONAL; + case IIO_CHAN_INFO_OFFSET: + *val = rescale->offset; + + return IIO_VAL_INT; default: return -EINVAL; } @@ -119,8 +124,10 @@ static int rescale_configure_channel(struct device *dev, return -EINVAL; } - chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_SCALE); + chan->info_mask_separate = + BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_OFFSET); if (iio_channel_has_available(schan, IIO_CHAN_INFO_RAW)) chan->info_mask_separate_available |= BIT(IIO_CHAN_INFO_RAW); @@ -280,6 +287,7 @@ static int rescale_probe(struct platform_device *pdev) rescale->cfg = of_device_get_match_data(dev); rescale->numerator = 1; rescale->denominator = 1; + rescale->offset = 0; ret = rescale->cfg->props(dev, rescale); if (ret)