From: Antoniu Miclaus <antoniu.miclaus@analog.com>
To: <jic23@kernel.org>, <robh@kernel.org>, <conor+dt@kernel.org>,
<devicetree@vger.kernel.org>, <linux-iio@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: Antoniu Miclaus <antoniu.miclaus@analog.com>
Subject: [PATCH 2/2] iio: adc: ad4851: add spi 3-wire support
Date: Thu, 26 Jun 2025 13:40:24 +0300 [thread overview]
Message-ID: <20250626104024.8645-2-antoniu.miclaus@analog.com> (raw)
In-Reply-To: <20250626104024.8645-1-antoniu.miclaus@analog.com>
Add support for 3-wire configuration within the driver.
By default 4-wire configuration is used.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
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
next prev parent reply other threads:[~2025-06-26 10:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-26 10:40 [PATCH 1/2] dt-bindings: iio: adc: ad4851: add spi-3wire Antoniu Miclaus
2025-06-26 10:40 ` Antoniu Miclaus [this message]
2025-06-27 15:52 ` [PATCH 2/2] iio: adc: ad4851: add spi 3-wire support Nuno Sá
2025-06-27 21:33 ` [PATCH 1/2] dt-bindings: iio: adc: ad4851: add spi-3wire Rob Herring (Arm)
2025-06-28 15:23 ` Jonathan Cameron
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