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Mon, 7 Jul 2025 09:51:09 -0400 From: Marcelo Schmitt To: , , , CC: , , , , , , , , , , , , , , Subject: [PATCH v8 03/12] iio: adc: ad4170-4: Add support for calibration gain Date: Mon, 7 Jul 2025 10:51:05 -0300 Message-ID: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Authority-Analysis: v=2.4 cv=AP9nYgXq c=1 sm=1 tr=0 ts=686bd0dd cx=c_pps a=PpDZqlmH/M8setHirZLBMw==:117 a=PpDZqlmH/M8setHirZLBMw==:17 a=Wb1JkmetP80A:10 a=gAnH3GRIAAAA:8 a=s1qB4CsIdprNQQnv0OQA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzA3MDA4MCBTYWx0ZWRfX5MKlX/h0q92n WbpbGPqsJSI0Lg1vWnGn6dGsnvTdK71GN5QTua89TY42KaBqt+hqnq91tc6EAGmGlTMqar76rc3 y5Xd3fpJMCnbPFkMfmVnlaXq4uvffe1iv9WzPT2gFdndfkZ6gw2YE380i7HBlBs8XGS32DxDijC P1FH/TJFrcOCcmUXadsFUuox5aCc5Usyhmjv0gYEk6XCAMoBpsBoyu0nxejgiwvpP0St60N6807 HswQ9KiklXBuNRikmhfabGxSj5J6bMxVFz7ohMiBWcwZwMcWRQFuIQbJZ6CAPSW7W+WllrMWluW U0dYPhlFj/0RGauAJwc7E7TAf7t2Z7ek1cIA+gryUhlVkax1UHloHhTFw6FAzid0i9MfIR3h40V oXkBviCXOYISeNZks6K6HRyZNVRBxHdh4MJtgQXzEE66SHtcrdFGn2wD+rfLIxF1MDbM2njo X-Proofpoint-ORIG-GUID: _SftCCBJIgoqyQ52aWps8dmNdhLsEocC X-Proofpoint-GUID: _SftCCBJIgoqyQ52aWps8dmNdhLsEocC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-07-07_03,2025-07-07_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxlogscore=999 mlxscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 lowpriorityscore=0 impostorscore=0 malwarescore=0 adultscore=0 spamscore=0 phishscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507070080 Content-Type: text/plain; charset="utf-8" Add support for ADC calibration gain configuration. Signed-off-by: Marcelo Schmitt --- No changes since v5. drivers/iio/adc/ad4170-4.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/iio/adc/ad4170-4.c b/drivers/iio/adc/ad4170-4.c index 2051c7339fb4..c314675a9ad1 100644 --- a/drivers/iio/adc/ad4170-4.c +++ b/drivers/iio/adc/ad4170-4.c @@ -626,6 +626,7 @@ static const struct iio_chan_spec ad4170_channel_templa= te =3D { .differential =3D 1, .info_mask_separate =3D BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_separate_available =3D BIT(IIO_CHAN_INFO_SCALE), .scan_type =3D { @@ -948,6 +949,9 @@ static int ad4170_read_raw(struct iio_dev *indio_dev, pga =3D FIELD_GET(AD4170_AFE_PGA_GAIN_MSK, setup->afe); *val =3D chan_info->offset_tbl[pga]; return IIO_VAL_INT; + case IIO_CHAN_INFO_CALIBSCALE: + *val =3D setup->gain; + return IIO_VAL_INT; default: return -EINVAL; } @@ -1062,6 +1066,18 @@ static int ad4170_set_pga(struct ad4170_state *st, return ad4170_write_channel_setup(st, chan->address, false); } =20 +static int ad4170_set_calib_gain(struct ad4170_state *st, + struct iio_chan_spec const *chan, int val) +{ + struct ad4170_chan_info *chan_info =3D &st->chan_infos[chan->address]; + struct ad4170_setup *setup =3D &chan_info->setup; + + guard(mutex)(&st->lock); + setup->gain =3D val; + + return ad4170_write_channel_setup(st, chan->address, false); +} + static int __ad4170_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long info) @@ -1071,6 +1087,8 @@ static int __ad4170_write_raw(struct iio_dev *indio_d= ev, switch (info) { case IIO_CHAN_INFO_SCALE: return ad4170_set_pga(st, chan, val, val2); + case IIO_CHAN_INFO_CALIBSCALE: + return ad4170_set_calib_gain(st, chan, val); default: return -EINVAL; } @@ -1097,6 +1115,8 @@ static int ad4170_write_raw_get_fmt(struct iio_dev *i= ndio_dev, switch (info) { case IIO_CHAN_INFO_SCALE: return IIO_VAL_INT_PLUS_NANO; + case IIO_CHAN_INFO_CALIBSCALE: + return IIO_VAL_INT; default: return -EINVAL; } --=20 2.47.2