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| author | Rui Miguel Silva <rui.silva@linaro.org> | 2019-04-12 17:48:58 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-04-22 11:34:12 +0100 |
| commit | a034cbe1c412628383609f1634154348e00e2990 (patch) | |
| tree | 87b80768fe1315b51ef54fb975ba44500abc2a9c | |
| parent | a0701b6263aebdcb3f0b88add547f81e74da032b (diff) | |
| download | linux-a034cbe1c412628383609f1634154348e00e2990.tar.bz2 | |
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: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/gyro/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/iio/gyro/Makefile | 1 | ||||
| -rw-r--r-- | drivers/iio/gyro/fxas21002c_i2c.c | 69 |
3 files changed, 76 insertions, 0 deletions
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig index cfd2cf44bac8..71b6552ee06b 100644 --- a/drivers/iio/gyro/Kconfig +++ b/drivers/iio/gyro/Kconfig @@ -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 diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile index 247dc600a602..adc18a5eb283 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_FXAS21002C) += fxas21002c_core.o +obj-$(CONFIG_FXAS21002C_I2C) += fxas21002c_i2c.o obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o diff --git a/drivers/iio/gyro/fxas21002c_i2c.c b/drivers/iio/gyro/fxas21002c_i2c.c new file mode 100644 index 000000000000..a7807fd97483 --- /dev/null +++ b/drivers/iio/gyro/fxas21002c_i2c.c @@ -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"); |