From: Andrea Merello <andrea.merello@gmail.com>
To: jic23@kernel.org, mchehab+huawei@kernel.org,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org
Cc: lars@metafoo.de, robh+dt@kernel.org, andy.shevchenko@gmail.com,
matt.ranostay@konsulko.com, ardeleanalex@gmail.com,
jacopo@jmondi.org, Andrea Merello <andrea.merello@iit.it>
Subject: [v4 13/14] iio: imu: add BNO055 I2C driver
Date: Fri, 15 Apr 2022 15:00:04 +0200 [thread overview]
Message-ID: <20220415130005.85879-14-andrea.merello@gmail.com> (raw)
In-Reply-To: <20220415130005.85879-1-andrea.merello@gmail.com>
From: Andrea Merello <andrea.merello@iit.it>
This path adds an I2C driver for communicating to a BNO055 IMU via I2C
bus and it enables the BNO055 core driver to work in this scenario.
Signed-off-by: Andrea Merello <andrea.merello@iit.it>
---
drivers/iio/imu/bno055/Kconfig | 11 ++++++
drivers/iio/imu/bno055/Makefile | 1 +
drivers/iio/imu/bno055/bno055_i2c.c | 56 +++++++++++++++++++++++++++++
3 files changed, 68 insertions(+)
create mode 100644 drivers/iio/imu/bno055/bno055_i2c.c
diff --git a/drivers/iio/imu/bno055/Kconfig b/drivers/iio/imu/bno055/Kconfig
index 5a1a574c9770..38b461646c02 100644
--- a/drivers/iio/imu/bno055/Kconfig
+++ b/drivers/iio/imu/bno055/Kconfig
@@ -18,3 +18,14 @@ config BOSCH_BNO055_SERDEV_TRACING
depends on EVENT_TRACING && BOSCH_BNO055_SERIAL
help
Enable this to enable trace events for the BNO055 serdev driver.
+
+config BOSCH_BNO055_I2C
+ tristate "Bosch BNO055 attached via I2C bus"
+ depends on I2C
+ select REGMAP_I2C
+ select BOSCH_BNO055_IIO
+ help
+ Enable this to support Bosch BNO055 IMUs attached via I2C bus.
+
+ This driver can also be built as a module. If so, the module will be
+ called bno055_i2c.
diff --git a/drivers/iio/imu/bno055/Makefile b/drivers/iio/imu/bno055/Makefile
index 20128b1a1afc..20f911aad94b 100644
--- a/drivers/iio/imu/bno055/Makefile
+++ b/drivers/iio/imu/bno055/Makefile
@@ -2,5 +2,6 @@
obj-$(CONFIG_BOSCH_BNO055_IIO) += bno055.o
obj-$(CONFIG_BOSCH_BNO055_SERIAL) += bno055_ser.o
+obj-$(CONFIG_BOSCH_BNO055_I2C) += bno055_i2c.o
CFLAGS_bno055_ser.o := -I$(src)
diff --git a/drivers/iio/imu/bno055/bno055_i2c.c b/drivers/iio/imu/bno055/bno055_i2c.c
new file mode 100644
index 000000000000..d59bb4e661be
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055_i2c.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Support for I2C-interfaced Bosch BNO055 IMU.
+ *
+ * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia
+ * Electronic Design Laboratory
+ * Written by Andrea Merello <andrea.merello@iit.it>
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "bno055.h"
+
+#define BNO055_I2C_XFER_BURST_BREAK_THRESHOLD 3 /* FIXME */
+
+static int bno055_i2c_probe(struct i2c_client *client)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(client, &bno055_regmap_config);
+ if (IS_ERR(regmap))
+ return dev_err_probe(&client->dev, PTR_ERR(regmap),
+ "Unable to init register map");
+
+ return bno055_probe(&client->dev, regmap,
+ BNO055_I2C_XFER_BURST_BREAK_THRESHOLD, true);
+}
+
+static const struct i2c_device_id bno055_i2c_id[] = {
+ {"bno055", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, bno055_i2c_id);
+
+static const struct of_device_id __maybe_unused bno055_i2c_of_match[] = {
+ { .compatible = "bosch,bno055" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bno055_i2c_of_match);
+
+static struct i2c_driver bno055_driver = {
+ .driver = {
+ .name = "bno055-i2c",
+ .of_match_table = of_match_ptr(bno055_i2c_of_match),
+ },
+ .probe_new = bno055_i2c_probe,
+ .id_table = bno055_i2c_id,
+};
+module_i2c_driver(bno055_driver);
+
+MODULE_AUTHOR("Andrea Merello");
+MODULE_DESCRIPTION("Bosch BNO055 I2C interface");
+MODULE_IMPORT_NS(IIO_BNO055);
+MODULE_LICENSE("GPL");
--
2.17.1
next prev parent reply other threads:[~2022-04-15 13:01 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-15 12:59 [v4 00/14] Add support for Bosch BNO055 IMU Andrea Merello
2022-04-15 12:59 ` [v4 01/14] iio: add modifiers for linear acceleration Andrea Merello
2022-04-15 12:59 ` [v4 02/14] iio: document linear acceleration modifiers Andrea Merello
2022-04-15 12:59 ` [v4 03/14] iio: event_monitor: add " Andrea Merello
2022-04-16 8:37 ` Andy Shevchenko
2022-04-15 12:59 ` [v4 04/14] iio: add modifers for pitch, yaw, roll Andrea Merello
2022-04-16 8:38 ` Andy Shevchenko
2022-04-15 12:59 ` [v4 05/14] iio: document pitch, yaw, roll modifiers Andrea Merello
2022-04-15 12:59 ` [v4 06/14] iio: event_monitor: add pitch, yaw and " Andrea Merello
2022-04-15 12:59 ` [v4 07/14] iio: add support for binary attributes Andrea Merello
2022-04-15 12:59 ` [v4 08/14] iio: imu: add Bosch Sensortec BNO055 core driver Andrea Merello
2022-04-15 17:43 ` Jonathan Cameron
2022-04-19 7:10 ` Andrea Merello
2022-04-24 17:45 ` Jonathan Cameron
2022-04-26 9:28 ` Andrea Merello
2022-04-28 18:45 ` Jonathan Cameron
2022-04-15 13:00 ` [v4 09/14] iio: document bno055 private sysfs attributes Andrea Merello
2022-04-15 13:00 ` [v4 10/14] iio: document "serial_number" sysfs attribute Andrea Merello
2022-04-19 7:41 ` Lars-Peter Clausen
2022-04-24 17:46 ` Jonathan Cameron
2022-04-15 13:00 ` [v4 11/14] dt-bindings: iio: imu: add documentation for Bosch BNO055 bindings Andrea Merello
2022-04-25 22:08 ` Rob Herring
2022-04-15 13:00 ` [v4 12/14] iio: imu: add BNO055 serdev driver Andrea Merello
2022-04-15 16:48 ` Jonathan Cameron
2022-04-16 8:44 ` Andy Shevchenko
2022-04-19 7:48 ` Andrea Merello
2022-04-19 8:29 ` Andy Shevchenko
2022-04-20 7:22 ` Andrea Merello
2022-04-15 13:00 ` Andrea Merello [this message]
2022-04-15 16:49 ` [v4 13/14] iio: imu: add BNO055 I2C driver Jonathan Cameron
2022-04-15 13:00 ` [v4 14/14] docs: iio: add documentation for BNO055 driver Andrea Merello
2022-04-16 8:40 ` [v4 00/14] Add support for Bosch BNO055 IMU Andy Shevchenko
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