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authorRui Miguel Silva <rui.silva@linaro.org>2019-04-12 17:48:58 +0100
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2019-04-22 11:34:12 +0100
commita034cbe1c412628383609f1634154348e00e2990 (patch)
tree87b80768fe1315b51ef54fb975ba44500abc2a9c /drivers/iio
parenta0701b6263aebdcb3f0b88add547f81e74da032b (diff)
downloadlinux-a034cbe1c412628383609f1634154348e00e2990.tar.gz
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>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/gyro/Kconfig6
-rw-r--r--drivers/iio/gyro/Makefile1
-rw-r--r--drivers/iio/gyro/fxas21002c_i2c.c69
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");