From nobody Wed Oct 8 10:58:48 2025 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 70EF528C035; Mon, 30 Jun 2025 13:59:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751291990; cv=none; b=TNUC3xS/lJnXY5dENtRhHvqqWGZ3iyz4/25XNJzfAYIxRlvhglY0hn8QazGVAukmixIXn5wa+FBGGioeNi/n2G8OOz8VK8mPE3RAfOcOrj35lmLJwpvOMCJ+M9VWrMQiad1HQVo6o8uI2O0E8ASFHQEL3Yd0Qjt8FdXxYMLMApc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751291990; c=relaxed/simple; bh=yLqmcRyor1QJiUjMq0X5lpxFTYSogqHK7nhSL2HsY6Y=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=h++0B4/8vtfJhIFysiqLUBIvM5dcjPD2uMloaqL8YgqKui8lW9rksfKGBXPQfWkffG33QBRmWh62gTUMdNg4PqbsOo2/0UP9nprl3J7QfiPtNcFJQeC2UMNSNpx9D2Itpv7UnHuv14mZ8IpzAn49ts0HLXTUP2/BCDhTwy9pRU8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com; spf=pass smtp.mailfrom=analog.com; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b=DbICCX6d; arc=none smtp.client-ip=148.163.135.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b="DbICCX6d" Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 55UCnABp012489; Mon, 30 Jun 2025 09:59:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=DKIM; bh=uU9Dd zNo9K6Na4NJFm4aQGVhBiSVcAJ1EI8h8lkwDSI=; b=DbICCX6d+Z875yvpWaYcA 4y8GiWmw8Bz3lPJwLHNN+klR/m5rsDpLjv12eIQcMlZ4tf3F19xE4DISyqlzZf5f WoLjs+tesD8KAc4QVMrvz6QpGF5+WieV4VrtbPL+sR8eCQh3Rq0gJw5ae/dZ33OI JFggfL5FW3THdKdFVKPrQkEeUeJOIl6s5aZVIfEg+uwsBni/jEAlVmkB2eW0Of73 iw4J7a7f86Pe3wV0GDqClj2NxTBERmojKCRZoD7e/eM1fIHdTt5VJTxtERDRF46p Dbsa800q3KIpqDId/9GHKlfJxAbcdfEorr5/yyAKn0yFOoR7ifQ1gMcojEnnKCjr Q== Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 47kqtj19hh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 30 Jun 2025 09:59:31 -0400 (EDT) Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 55UDxUbE039365 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 30 Jun 2025 09:59:30 -0400 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Mon, 30 Jun 2025 09:59:30 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Mon, 30 Jun 2025 09:59:30 -0400 Received: from work.ad.analog.com (HYB-hERzalRezfV.ad.analog.com [10.65.205.9]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 55UDxEKV008274; Mon, 30 Jun 2025 09:59:16 -0400 From: Marcelo Schmitt To: , , , CC: , , , , , , , , , , , , , Subject: [PATCH v7 04/12] iio: adc: ad4170-4: Add support for calibration bias Date: Mon, 30 Jun 2025 10:59:13 -0300 Message-ID: <0a2cf0ee8b869d0ed08d261851cf98df4445beab.1751289747.git.marcelo.schmitt@analog.com> 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-Proofpoint-GUID: ArprzhsiTsthBwUGpZc9jcmOTsqUE58t X-Proofpoint-ORIG-GUID: ArprzhsiTsthBwUGpZc9jcmOTsqUE58t X-Authority-Analysis: v=2.4 cv=WasMa1hX c=1 sm=1 tr=0 ts=68629844 cx=c_pps a=PpDZqlmH/M8setHirZLBMw==:117 a=PpDZqlmH/M8setHirZLBMw==:17 a=6IFa9wvqVegA:10 a=gAnH3GRIAAAA:8 a=1daVv4cnZmPfqeT0XEsA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjMwMDExNSBTYWx0ZWRfX9rMFEw44QaVX fgSm7lV8gxUFzeqyurUSv6bGrukqXnSwrXW4wgRyOZpKomB3H1+k+5LGsYlSJBv/+eVMMrkmmKj UVi9YyxGJjSWhqCHZLb8A8whF7PZgtSNzGJX52W3agaVCubSll411rY1TpLYn6e1kjE3D8hqSvK +BuVvKCyktivsCBTpFuA8xODKuNSAvAIETjKWwULSVEMkgeO+8vSfXTNIepKitupjv6jN/rAM6M rL/B5xyOUGMI6Uqg2GmWIOdG2TkpcELn3tGYEe83LxA4094Z+5/c5lQ0jtHwalfc4z3wptaQZse OO4dwTT9elruMtgB0r3PVgY/MAyLTBepIS01n3wedicGuzuxSlI0aVgha4DZr0NopCZtsHaBxfX iqusSso2+X9G+gn6gURRsI7h+Kt2/YS22tPcJ4+WUtnlLce9j0gkLQ+NBuXKVRnmu5FGG+wg 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=2025-06-30_03,2025-06-27_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 bulkscore=0 spamscore=0 priorityscore=1501 phishscore=0 malwarescore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506300115 Content-Type: text/plain; charset="utf-8" Add support for ADC calibration bias/offset configuration. Signed-off-by: Marcelo Schmitt --- No changes since v5. drivers/iio/adc/ad4170-4.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/iio/adc/ad4170-4.c b/drivers/iio/adc/ad4170-4.c index c45203c0b479..216dc844cc62 100644 --- a/drivers/iio/adc/ad4170-4.c +++ b/drivers/iio/adc/ad4170-4.c @@ -623,6 +623,7 @@ 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_CALIBBIAS) | BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET), .info_mask_separate_available =3D BIT(IIO_CHAN_INFO_SCALE), @@ -941,6 +942,9 @@ 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_CALIBBIAS: + *val =3D setup->offset; + return IIO_VAL_INT; case IIO_CHAN_INFO_CALIBSCALE: *val =3D setup->gain; return IIO_VAL_INT; @@ -1058,6 +1062,18 @@ static int ad4170_set_pga(struct ad4170_state *st, return ad4170_write_channel_setup(st, chan->address, false); } =20 +static int ad4170_set_calib_offset(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->offset =3D val; + + return ad4170_write_channel_setup(st, chan->address, false); +} + static int ad4170_set_calib_gain(struct ad4170_state *st, struct iio_chan_spec const *chan, int val) { @@ -1079,6 +1095,8 @@ 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_CALIBBIAS: + return ad4170_set_calib_offset(st, chan, val); case IIO_CHAN_INFO_CALIBSCALE: return ad4170_set_calib_gain(st, chan, val); default: @@ -1107,6 +1125,7 @@ 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_CALIBBIAS: case IIO_CHAN_INFO_CALIBSCALE: return IIO_VAL_INT; default: --=20 2.47.2