From: Lothar Rubusch <l.rubusch@gmail.com>
To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org,
robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
conor+dt@kernel.org
Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, eraretuya@gmail.com,
l.rubusch@gmail.com
Subject: [PATCH v3 3/6] iio: accel: adxl345: Add spi-3wire option
Date: Sat, 23 Mar 2024 12:20:27 +0000 [thread overview]
Message-ID: <20240323122030.21800-4-l.rubusch@gmail.com> (raw)
In-Reply-To: <20240323122030.21800-1-l.rubusch@gmail.com>
Add a setup function implementation to the spi module to enable
spi-3wire as option when specified in the device-tree.
Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
drivers/iio/accel/adxl345.h | 3 +++
drivers/iio/accel/adxl345_spi.c | 12 +++++++++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h
index 3c1ded0c2..6b84a2cee 100644
--- a/drivers/iio/accel/adxl345.h
+++ b/drivers/iio/accel/adxl345.h
@@ -8,6 +8,9 @@
#ifndef _ADXL345_H_
#define _ADXL345_H_
+#define ADXL345_REG_DATA_FORMAT 0x31
+#define ADXL345_DATA_FORMAT_SPI BIT(6) /* spi-3wire */
+
/*
* In full-resolution mode, scale factor is maintained at ~4 mg/LSB
* in all g ranges.
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c
index 1c0513bd3..1094396ac 100644
--- a/drivers/iio/accel/adxl345_spi.c
+++ b/drivers/iio/accel/adxl345_spi.c
@@ -20,6 +20,16 @@ static const struct regmap_config adxl345_spi_regmap_config = {
.read_flag_mask = BIT(7) | BIT(6),
};
+static int adxl345_spi_setup(struct device *dev, struct regmap *regmap)
+{
+ struct spi_device *spi = container_of(dev, struct spi_device, dev);
+
+ if (spi->mode & SPI_3WIRE)
+ return regmap_write(regmap, ADXL345_REG_DATA_FORMAT,
+ ADXL345_DATA_FORMAT_SPI);
+ return 0;
+}
+
static int adxl345_spi_probe(struct spi_device *spi)
{
struct regmap *regmap;
@@ -33,7 +43,7 @@ static int adxl345_spi_probe(struct spi_device *spi)
if (IS_ERR(regmap))
return dev_err_probe(&spi->dev, PTR_ERR(regmap), "Error initializing regmap\n");
- return adxl345_core_probe(&spi->dev, regmap, NULL);
+ return adxl345_core_probe(&spi->dev, regmap, &adxl345_spi_setup);
}
static const struct adxl345_chip_info adxl345_spi_info = {
--
2.25.1
next prev parent reply other threads:[~2024-03-23 12:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-23 12:20 [PATCH v3 0/6] iio: accel: adxl345: Add spi-3wire feature Lothar Rubusch
2024-03-23 12:20 ` [PATCH v3 1/6] iio: accel: adxl345: Pass function pointer to core Lothar Rubusch
2024-03-23 12:20 ` [PATCH v3 2/6] iio: accel: adxl345: Make data_range obsolete Lothar Rubusch
2024-03-23 12:20 ` Lothar Rubusch [this message]
2024-03-24 13:32 ` [PATCH v3 3/6] iio: accel: adxl345: Add spi-3wire option Jonathan Cameron
2024-03-24 18:59 ` Lothar Rubusch
2024-03-25 14:46 ` Jonathan Cameron
2024-03-23 12:20 ` [PATCH v3 4/6] iio: accel: adxl345: Remove single info instances Lothar Rubusch
2024-03-24 13:35 ` Jonathan Cameron
2024-03-24 19:06 ` Lothar Rubusch
2024-03-25 14:48 ` Jonathan Cameron
2024-03-23 12:20 ` [PATCH v3 5/6] iio: accel: adxl345: Group bus configuration Lothar Rubusch
2024-03-24 13:37 ` Jonathan Cameron
2024-03-23 12:20 ` [PATCH v3 6/6] dt-bindings: iio: accel: adxl345: Add spi-3wire Lothar Rubusch
2024-03-23 14:28 ` Krzysztof Kozlowski
2024-03-24 13:39 ` [PATCH v3 0/6] iio: accel: adxl345: Add spi-3wire feature Jonathan Cameron
2024-03-24 19:20 ` Lothar Rubusch
2024-03-25 14:51 ` Jonathan Cameron
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