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[109.49.46.234]) by smtp.gmail.com with ESMTPSA id i186sm19352297wmd.19.2019.02.04.09.00.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Feb 2019 09:00:29 -0800 (PST) From: Rui Miguel Silva To: Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Shawn Guo , Rob Herring , Fabio Estevam Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, Rui Miguel Silva Subject: [PATCH 3/5] iio: gyro: fxas2100x: add i2c driver Date: Mon, 4 Feb 2019 17:00:10 +0000 Message-Id: <20190204170012.13617-4-rui.silva@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190204170012.13617-1-rui.silva@linaro.org> References: <20190204170012.13617-1-rui.silva@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This add the real driver to talk over i2c and use the fxas2100x core for the main tasks. Signed-off-by: Rui Miguel Silva --- drivers/iio/gyro/Kconfig | 6 +++ drivers/iio/gyro/Makefile | 1 + drivers/iio/gyro/fxas2100x_i2c.c | 73 ++++++++++++++++++++++++++++++++ 3 files changed, 80 insertions(+) create mode 100644 drivers/iio/gyro/fxas2100x_i2c.c diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig index c168aa63de3b..1f9bfc51febb 100644 --- a/drivers/iio/gyro/Kconfig +++ b/drivers/iio/gyro/Kconfig @@ -77,6 +77,8 @@ config FXAS2100X tristate "NXP FXAS2100X Gyro Sensor" select IIO_BUFFER select IIO_TRIGGERED_BUFFER + select FXAS2100X_I2C if (I2C) + depends on (I2C || SPI_MASTER) help Say yes here to build support for NXP FXAS2100X family Tri-axis Gyro Sensor driver connected via I2C or SPI. @@ -84,6 +86,10 @@ config FXAS2100X This driver can also be built as a module. If so, the module will be called fxas2100x_i2c or fxas2100x_spi. +config FXAS2100X_I2C + tristate + select REGMAP_I2C + config HID_SENSOR_GYRO_3D depends on HID_SENSOR_HUB select IIO_BUFFER diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile index 9e2395185a6e..8b1540ddbbce 100644 --- a/drivers/iio/gyro/Makefile +++ b/drivers/iio/gyro/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_BMG160) += bmg160_core.o obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o obj-$(CONFIG_BMG160_SPI) += bmg160_spi.o obj-$(CONFIG_FXAS2100X) += fxas2100x_core.o +obj-$(CONFIG_FXAS2100X_I2C) += fxas2100x_i2c.o obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o diff --git a/drivers/iio/gyro/fxas2100x_i2c.c b/drivers/iio/gyro/fxas2100x_i2c.c new file mode 100644 index 000000000000..af4e8af6d301 --- /dev/null +++ b/drivers/iio/gyro/fxas2100x_i2c.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for NXP FXAS2100x Gyroscope - I2C + * + * Copyright (C) 2018 Linaro Ltd. + * + */ +#include +#include +#include +#include + +#include "fxas2100x.h" + +static const struct regmap_config fxas2100x_regmap_i2c_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = FXAS2100X_REG_CTRL3, +}; + +static int fxas2100x_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct regmap *regmap; + const char *name = NULL; + + regmap = devm_regmap_init_i2c(i2c, &fxas2100x_regmap_i2c_conf); + if (IS_ERR(regmap)) { + dev_err(&i2c->dev, "Failed to register i2c regmap: %ld\n", + PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + if (id) + name = id->name; + + return fxas2100x_core_probe(&i2c->dev, regmap, i2c->irq, name); +} + +static int fxas2100x_i2c_remove(struct i2c_client *i2c) +{ + fxas2100x_core_remove(&i2c->dev); + + return 0; +} + +static const struct i2c_device_id fxas2100x_i2c_id[] = { + { "fxas2100x", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, fxas2100x_i2c_id); + +static const struct of_device_id fxas2100x_i2c_of_match[] = { + { .compatible = "nxp,fxas2100x", }, + { }, +}; +MODULE_DEVICE_TABLE(of, fxas2100x_i2c_of_match); + +static struct i2c_driver fxas2100x_i2c_driver = { + .driver = { + .name = "fxas2100x_i2c", + .pm = &fxas2100x_pm_ops, + .of_match_table = of_match_ptr(fxas2100x_i2c_of_match), + }, + .probe = fxas2100x_i2c_probe, + .remove = fxas2100x_i2c_remove, + .id_table = fxas2100x_i2c_id, +}; +module_i2c_driver(fxas2100x_i2c_driver); + +MODULE_AUTHOR("Rui Miguel Silva "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("FXAS2100X I2C Gyro driver"); -- 2.20.1