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Thu, 26 Jun 2025 06:49:44 -0400 From: Antoniu Miclaus To: , , , , , CC: Antoniu Miclaus Subject: [PATCH 2/2] iio: adc: ad4851: add spi 3-wire support Date: Thu, 26 Jun 2025 13:40:24 +0300 Message-ID: <20250626104024.8645-2-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250626104024.8645-1-antoniu.miclaus@analog.com> References: <20250626104024.8645-1-antoniu.miclaus@analog.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: qY9YEawe6QgjNLlwx2kwSz5-Oi8VVYwQ X-Authority-Analysis: v=2.4 cv=DKGP4zNb c=1 sm=1 tr=0 ts=685d25cf cx=c_pps a=3WNzaoukacrqR9RwcOSAdA==:117 a=3WNzaoukacrqR9RwcOSAdA==:17 a=6IFa9wvqVegA:10 a=gAnH3GRIAAAA:8 a=4TnTp_t2Nb-xTEFrOlkA:9 X-Proofpoint-ORIG-GUID: qY9YEawe6QgjNLlwx2kwSz5-Oi8VVYwQ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjI2MDA4OSBTYWx0ZWRfXyGxO46DPO2+4 aVmsH46vDVmwdLGQfsRigbsNf5OpkLQUYXoV06qoUypqZ3ZpX/3WFLiRBogdxr2USjfHEI1oVH1 f9v62GrMXmM77mOWX10K0ki7euIBgTVDdIbaBr9G8Y0iVzZ9obH8DXdFsHVKimBZUi3HZahRvrH LNdt8ZbB62RpaTb+Dxb9UxGxT0K35VE/E4BtPn3mln2t8kECXjluZsVQUBal2Afkxh6grrWcM1Q VFiS6EdsMBCBkxRQapRSwz9d7T8GIO4nKmVmgoExl45weVoDIZAMHdRMiYbiaXMYCk1DRJ5G7T2 587b2Rcez4EM3UiQbfklQE2GhE9n3nejAUeIWW925jFDGXAMVsaVYkHl0ljbmUkXdOaQJcU62IM bwNOcd7nY+48GFEzX0y8F1DBl7lZHx6hCFPPd3VBSvfxxDDVChOsYpJz66gBOEbKotX0BLNa 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=2025-06-26_05,2025-06-25_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 phishscore=0 suspectscore=0 malwarescore=0 impostorscore=0 spamscore=0 mlxlogscore=998 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506260089 Add support for 3-wire configuration within the driver. By default 4-wire configuration is used. Signed-off-by: Antoniu Miclaus --- drivers/iio/adc/ad4851.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/ad4851.c b/drivers/iio/adc/ad4851.c index 31e1e02c0ce3..1ad77f2a4580 100644 --- a/drivers/iio/adc/ad4851.c +++ b/drivers/iio/adc/ad4851.c @@ -444,10 +444,12 @@ static int ad4851_setup(struct ad4851_state *st) if (ret) return ret; - ret = regmap_write(st->regmap, AD4851_REG_INTERFACE_CONFIG_A, - AD4851_SDO_ENABLE); - if (ret) - return ret; + if (!(st->spi->mode & SPI_3WIRE)) { + ret = regmap_write(st->regmap, AD4851_REG_INTERFACE_CONFIG_A, + AD4851_SDO_ENABLE); + if (ret) + return ret; + } ret = regmap_read(st->regmap, AD4851_REG_PRODUCT_ID_L, &product_id); if (ret) -- 2.49.0