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@gmail.com>,
Andrea Merello <andrea.merello@iit.it>
Subject: [v2 10/10] iio: imu: add BNO055 I2C driver
Date: Thu, 28 Oct 2021 12:18:40 +0200 [thread overview]
Message-ID: <20211028101840.24632-11-andrea.merello@gmail.com> (raw)
In-Reply-To: <20211028101840.24632-1-andrea.merello@gmail.com>
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 | 6 ++++
drivers/iio/imu/bno055/Makefile | 1 +
drivers/iio/imu/bno055/bno055_i2c.c | 54 +++++++++++++++++++++++++++++
3 files changed, 61 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 941e43f0368d..87200787d548 100644
--- a/drivers/iio/imu/bno055/Kconfig
+++ b/drivers/iio/imu/bno055/Kconfig
@@ -7,3 +7,9 @@ config BOSH_BNO055_SERIAL
tristate "Bosh BNO055 attached via serial bus"
depends on SERIAL_DEV_BUS
select BOSH_BNO055_IIO
+
+config BOSH_BNO055_I2C
+ tristate "Bosh BNO055 attached via I2C bus"
+ depends on I2C
+ select REGMAP_I2C
+ select BOSH_BNO055_IIO
diff --git a/drivers/iio/imu/bno055/Makefile b/drivers/iio/imu/bno055/Makefile
index 7285ade2f4b9..eaf24018cb28 100644
--- a/drivers/iio/imu/bno055/Makefile
+++ b/drivers/iio/imu/bno055/Makefile
@@ -2,3 +2,4 @@
obj-$(CONFIG_BOSH_BNO055_IIO) += bno055.o
obj-$(CONFIG_BOSH_BNO055_SERIAL) += bno055_sl.o
+obj-$(CONFIG_BOSH_BNO055_I2C) += bno055_i2c.o
diff --git a/drivers/iio/imu/bno055/bno055_i2c.c b/drivers/iio/imu/bno055/bno055_i2c.c
new file mode 100644
index 000000000000..eea0daa6a61d
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055_i2c.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * I2C interface for Bosh BNO055 IMU.
+ * This file implements I2C communication up to the register read/write
+ * level.
+ *
+ * Copyright (C) 2021 Istituto Italiano di Tecnologia
+ * Electronic Design Laboratory
+ * Written by Andrea Merello <andrea.merello@iit.it>
+ */
+
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/module.h>
+
+#include "bno055.h"
+
+#define BNO055_I2C_XFER_BURST_BREAK_THRESHOLD 3 /* FIXME */
+
+static int bno055_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct regmap *regmap =
+ devm_regmap_init_i2c(client, &bno055_regmap_config);
+
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "Unable to init register map");
+ return PTR_ERR(regmap);
+ }
+
+ return bno055_probe(&client->dev, regmap,
+ BNO055_I2C_XFER_BURST_BREAK_THRESHOLD);
+
+ return 0;
+}
+
+static const struct i2c_device_id bno055_i2c_id[] = {
+ {"bno055", 0},
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, bno055_i2c_id);
+
+static struct i2c_driver bno055_driver = {
+ .driver = {
+ .name = "bno055-i2c",
+ },
+ .probe = bno055_i2c_probe,
+ .id_table = bno055_i2c_id
+};
+module_i2c_driver(bno055_driver);
+
+MODULE_AUTHOR("Andrea Merello");
+MODULE_DESCRIPTION("Bosch BNO055 I2C interface");
+MODULE_LICENSE("GPL v2");
--
2.17.1
next prev parent reply other threads:[~2021-10-28 10:19 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-15 14:17 [PATCH 0/4] Add support for Bosch BNO055 IMU Andrea Merello
2021-07-15 14:17 ` [PATCH 1/4] iio: add modifiers for linear acceleration Andrea Merello
2021-07-17 14:32 ` Jonathan Cameron
2021-07-15 14:17 ` [PATCH 2/4] iio: imu: add Bosch Sensortec BNO055 core driver Andrea Merello
2021-07-15 16:49 ` Andy Shevchenko
2021-07-16 9:19 ` Andrea Merello
2021-07-16 12:39 ` Andy Shevchenko
2021-07-19 7:12 ` Andrea Merello
2021-07-19 10:33 ` Andrea Merello
2021-07-19 9:02 ` Andrea Merello
2021-07-19 11:48 ` Andy Shevchenko
2021-07-19 13:13 ` Andrea Merello
2021-07-16 7:24 ` Alexandru Ardelean
2021-07-16 9:49 ` Andrea Merello
2021-07-17 15:32 ` Jonathan Cameron
2021-07-19 8:30 ` Andrea Merello
2021-07-24 17:08 ` Jonathan Cameron
2021-07-26 14:36 ` Andrea Merello
2021-07-31 18:01 ` Jonathan Cameron
2021-08-04 10:06 ` Andrea Merello
2021-08-04 16:50 ` Jonathan Cameron
2021-08-04 19:27 ` Andy Shevchenko
2021-07-15 14:17 ` [PATCH 3/4] dt-bindings: iio: imu: add bosch BNO055 serdev driver bindings Andrea Merello
2021-07-17 15:39 ` Jonathan Cameron
2021-07-19 8:44 ` Andrea Merello
2021-07-15 14:17 ` [PATCH 4/4] iio: imu: add BNO055 serdev driver Andrea Merello
2021-07-15 17:08 ` kernel test robot
2021-07-15 18:14 ` kernel test robot
2021-07-17 15:50 ` Jonathan Cameron
2021-07-19 8:49 ` Andrea Merello
2021-07-19 11:55 ` Andy Shevchenko
2021-07-19 12:59 ` Andrea Merello
2021-07-19 14:15 ` Andy Shevchenko
2021-07-19 15:07 ` Andrea Merello
2021-10-28 10:18 ` [v2 00/10] Add support for Bosch BNO055 IMU Andrea Merello
2021-10-28 10:18 ` [v2 01/10] utils_macro: introduce find_closest_unsorted() Andrea Merello
2021-10-28 10:25 ` Andy Shevchenko
2021-11-08 11:05 ` Andrea Merello
2021-10-28 10:18 ` [v2 02/10] iio: document linear acceleration modifiers Andrea Merello
2021-10-28 10:31 ` Andy Shevchenko
2021-11-09 7:48 ` Andrea Merello
2021-10-28 10:40 ` Jonathan Cameron
2021-11-09 8:00 ` Andrea Merello
2021-11-09 17:00 ` Jonathan Cameron
2021-10-28 10:18 ` [v2 03/10] iio: document euler angles modifiers Andrea Merello
2021-10-28 10:33 ` Andy Shevchenko
2021-10-28 10:41 ` Jonathan Cameron
2021-11-09 8:15 ` Andrea Merello
2021-11-09 17:03 ` Jonathan Cameron
2021-10-28 10:18 ` [v2 04/10] iio: add modifiers for linear acceleration Andrea Merello
2021-10-28 10:45 ` Jonathan Cameron
2021-11-09 9:58 ` Andrea Merello
2021-11-09 17:05 ` Jonathan Cameron
2021-10-28 10:18 ` [v2 05/10] iio: add modifers for pitch, yaw, roll Andrea Merello
2021-10-28 10:47 ` Jonathan Cameron
2021-10-28 10:18 ` [v2 06/10] iio: document bno055 private sysfs attributes Andrea Merello
2021-10-28 11:04 ` Jonathan Cameron
2021-11-09 10:22 ` Andrea Merello
2021-11-14 16:20 ` Jonathan Cameron
2022-01-04 11:42 ` Andrea Merello
2022-01-15 15:27 ` Jonathan Cameron
2022-01-17 9:37 ` Andrea Merello
2022-01-22 18:08 ` Jonathan Cameron
2021-10-28 10:18 ` [v2 07/10] iio: imu: add Bosch Sensortec BNO055 core driver Andrea Merello
2021-10-28 13:31 ` Jonathan Cameron
2021-11-09 11:52 ` Andrea Merello
2021-11-14 16:33 ` Jonathan Cameron
2021-10-28 10:18 ` [v2 08/10] dt-bindings: iio: imu: add documentation for Bosch BNO055 bindings Andrea Merello
2021-10-28 12:25 ` Rob Herring
2021-10-28 10:18 ` [v2 09/10] iio: imu: add BNO055 serdev driver Andrea Merello
2021-10-28 12:31 ` Jonathan Cameron
2021-11-09 15:33 ` Andrea Merello
2021-11-14 16:37 ` Jonathan Cameron
2021-10-29 7:09 ` kernel test robot
2021-10-29 12:59 ` kernel test robot
2021-10-28 10:18 ` Andrea Merello [this message]
2021-10-28 11:10 ` [v2 10/10] iio: imu: add BNO055 I2C driver Jonathan Cameron
2021-11-11 10:12 ` Andrea Merello
2021-11-14 16:38 ` Jonathan Cameron
2021-10-28 22:04 ` Randy Dunlap
2021-11-09 11:56 ` Andrea Merello
2021-11-09 15:47 ` Randy Dunlap
2021-11-09 18:21 ` Joe Perches
2021-11-09 19:11 ` Randy Dunlap
2021-11-09 20:46 ` Joe Perches
2021-11-09 21:20 ` Randy Dunlap
2021-10-29 13:30 ` kernel test robot
2021-10-28 10:35 ` [v2 00/10] Add support for Bosch BNO055 IMU Jonathan Cameron
2021-10-28 10:33 ` Andy Shevchenko
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