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iio: gyro: fxas21002c: add i2c driver

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

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Rui Miguel Silva 2019-04-12 17:48:58 +01:00 committed by Jonathan Cameron
parent a0701b6263
commit a034cbe1c4
3 changed files with 76 additions and 0 deletions
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6
drivers/iio/gyro/Kconfig
View File

@ -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

1
drivers/iio/gyro/Makefile
View File

@ -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

69
drivers/iio/gyro/fxas21002c_i2c.c Normal file
View File

@ -0,0 +1,69 @@
// 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");