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Commit a034cbe1 authored by Rui Miguel Silva's avatar Rui Miguel Silva Committed by Jonathan Cameron
Browse files

iio: gyro: fxas21002c: add i2c driver 



Add the real driver to talk over i2c and use the fxas21002c core
for the main tasks.

Signed-off-by: default avatarRui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent a0701b62

drivers/iio/gyro/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -77,6 +77,8 @@ config FXAS21002C 
       tristate "NXP FXAS21002C Gyro Sensor"

       select IIO_BUFFER

       select IIO_TRIGGERED_BUFFER

       select FXAS21002C_I2C if (I2C)

       depends on I2C

       help

         Say yes here to build support for NXP FXAS21002C Tri-axis Gyro

         Sensor driver connected via I2C or SPI.
@@ -84,6 +86,10 @@ config FXAS21002C 
         This driver can also be built as a module.  If so, the module

         will be called fxas21002c_i2c or fxas21002c_spi.



config FXAS21002C_I2C

       tristate

       select REGMAP_I2C



config HID_SENSOR_GYRO_3D

	depends on HID_SENSOR_HUB

	select IIO_BUFFER

drivers/iio/gyro/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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_FXAS21002C) += fxas21002c_core.o

obj-$(CONFIG_FXAS21002C_I2C) += fxas21002c_i2c.o



obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o

drivers/iio/gyro/fxas21002c_i2c.c

0 → 100644
+69 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Driver for NXP FXAS21002C Gyroscope - I2C

 *

 * Copyright (C) 2018 Linaro Ltd.

 */



#include <linux/err.h>

#include <linux/i2c.h>

#include <linux/mod_devicetable.h>

#include <linux/module.h>

#include <linux/regmap.h>



#include "fxas21002c.h"



static const struct regmap_config fxas21002c_regmap_i2c_conf = {

	.reg_bits = 8,

	.val_bits = 8,

	.max_register = FXAS21002C_REG_CTRL3,

};



static int fxas21002c_i2c_probe(struct i2c_client *i2c)

{

	struct regmap *regmap;



	regmap = devm_regmap_init_i2c(i2c, &fxas21002c_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);

	}



	return fxas21002c_core_probe(&i2c->dev, regmap, i2c->irq, i2c->name);

}



static int fxas21002c_i2c_remove(struct i2c_client *i2c)

{

	fxas21002c_core_remove(&i2c->dev);



	return 0;

}



static const struct i2c_device_id fxas21002c_i2c_id[] = {

	{ "fxas21002c", 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, fxas21002c_i2c_id);



static const struct of_device_id fxas21002c_i2c_of_match[] = {

	{ .compatible = "nxp,fxas21002c", },

	{ }

};

MODULE_DEVICE_TABLE(of, fxas21002c_i2c_of_match);



static struct i2c_driver fxas21002c_i2c_driver = {

	.driver = {

		.name = "fxas21002c_i2c",

		.pm = &fxas21002c_pm_ops,

		.of_match_table = fxas21002c_i2c_of_match,

	},

	.probe_new	= fxas21002c_i2c_probe,

	.remove		= fxas21002c_i2c_remove,

	.id_table	= fxas21002c_i2c_id,

};

module_i2c_driver(fxas21002c_i2c_driver);



MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");

MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("FXAS21002C I2C Gyro driver");