From patchwork Mon Jun 13 12:05:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: andrea.merello@iit.it X-Patchwork-Id: 581740 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97017CCA481 for ; Tue, 14 Jun 2022 12:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234028AbiFNM2A (ORCPT ); Tue, 14 Jun 2022 08:28:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233019AbiFNM16 (ORCPT ); Tue, 14 Jun 2022 08:27:58 -0400 Received: from es400ra02.iit.it (mx.iit.it [90.147.26.161]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CDF921269; Tue, 14 Jun 2022 05:27:50 -0700 (PDT) Received: from es400ra02.iit.it (127.0.0.1) id hl1vc40171s9; Mon, 13 Jun 2022 14:05:57 +0200 (envelope-from ) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=iit.it; s=mx; i=@iit.it; h=Received:Received:From:To:CC:Subject:Date: Message-ID:In-Reply-To:References:MIME-Version: Content-Transfer-Encoding:Content-Type; bh=l8Ahxgl+9kp6R2YaL5zEc e2N/Lu7/gPoBOC+0RYxG7w=; b=HbkqlXgSkqXTuyBFoGd441G7xXfDp8vpml+FZ /h+lVGxnfgphKJ0/CeMP/gYmFDLAzZ5/9rzY2rCQgCMVuZW1dEitNZfZetH9QcB4 hdsQ0Xa2ErFGN7TGH0CoK7BRDhjVFfHqV4eGg2mepCbK19Kp1rsEwsBgco4tZOvZ RZrV5E= Received: from mail.iit.it ([10.255.8.186]) by es400ra02.iit.it ([172.31.0.242]) (SonicWall 10.0.16.7295) with ESMTPS (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256/256) id o202206131205570231027-8; Mon, 13 Jun 2022 14:05:57 +0200 Received: from poker.lan (90.147.26.235) by iitmxwge020.iit.local (10.255.8.186) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2375.17; Mon, 13 Jun 2022 14:05:56 +0200 From: To: , , , , CC: , , , , , , Andrea Merello Subject: [v6 13/14] iio: imu: add BNO055 I2C driver Date: Mon, 13 Jun 2022 14:05:33 +0200 Message-ID: <20220613120534.36991-14-andrea.merello@iit.it> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220613120534.36991-1-andrea.merello@iit.it> References: <20220613120534.36991-1-andrea.merello@iit.it> MIME-Version: 1.0 X-Originating-IP: [90.147.26.235] X-ClientProxiedBy: IITMXWGE021.iit.local (10.255.8.187) To iitmxwge020.iit.local (10.255.8.186) X-Mlf-DSE-Version: 6873 X-Mlf-Rules-Version: s20220519150137; ds20200715013501; di20220610180234; ri20160318003319; fs20220610211824 X-Mlf-Smartnet-Version: 20210917223710 X-Mlf-Envelope-From: Andrea.Merello@iit.it X-Mlf-Version: 10.0.16.7295 X-Mlf-License: BSV_C_AP_T_R X-Mlf-UniqueId: o202206131205570231027 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Andrea Merello Add an I2C driver for communicating to a BNO055 IMU via I2C bus and enable the BNO055 core driver to work in this scenario. Signed-off-by: Andrea Merello Reviewed-by: Andy Shevchenko --- drivers/iio/imu/bno055/Kconfig | 11 ++++++ drivers/iio/imu/bno055/Makefile | 2 + drivers/iio/imu/bno055/bno055_i2c.c | 57 +++++++++++++++++++++++++++++ 3 files changed, 70 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 d014b68cd43d..ccf9ea7c50f8 100644 --- a/drivers/iio/imu/bno055/Kconfig +++ b/drivers/iio/imu/bno055/Kconfig @@ -12,3 +12,14 @@ config BOSCH_BNO055_SERIAL This driver can also be built as a module. If so, the module will be called bno055_sl. + +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 212307ce9c08..f0be80accb5b 100644 --- a/drivers/iio/imu/bno055/Makefile +++ b/drivers/iio/imu/bno055/Makefile @@ -6,3 +6,5 @@ bno055_ser-y := bno055_ser_core.o # define_trace.h needs to know how to find our header CFLAGS_bno055_ser_trace.o := -I$(src) bno055_ser-$(CONFIG_TRACING) += bno055_ser_trace.o + +obj-$(CONFIG_BOSCH_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..9bb256fdb0d3 --- /dev/null +++ b/drivers/iio/imu/bno055/bno055_i2c.c @@ -0,0 +1,57 @@ +// 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 + */ + +#include +#include +#include +#include + +#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");