Add driver to talk over spi to a fxas2100x gyroscope device and use the
core as main controller.
Signed-off-by: Rui Miguel Silva <rui.silva@xxxxxxxxxx>
---
drivers/iio/gyro/Kconfig | 5 +++
drivers/iio/gyro/Makefile | 1 +
drivers/iio/gyro/fxas2100x_spi.c | 70 ++++++++++++++++++++++++++++++++
3 files changed, 76 insertions(+)
create mode 100644 drivers/iio/gyro/fxas2100x_spi.c
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index 1f9bfc51febb..4f6d6b393ad8 100644
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -78,6 +78,7 @@ config FXAS2100X
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select FXAS2100X_I2C if (I2C)
+ select FXAS2100X_SPI if (SPI)
depends on (I2C || SPI_MASTER)
help
Say yes here to build support for NXP FXAS2100X family Tri-axis Gyro
@@ -90,6 +91,10 @@ config FXAS2100X_I2C
tristate
select REGMAP_I2C
+config FXAS2100X_SPI
+ tristate
+ select REGMAP_SPI
+
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 8b1540ddbbce..29915ba124b0 100644
--- a/drivers/iio/gyro/Makefile
+++ b/drivers/iio/gyro/Makefile
@@ -14,6 +14,7 @@ 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-$(CONFIG_FXAS2100X_SPI) += fxas2100x_spi.o
obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
diff --git a/drivers/iio/gyro/fxas2100x_spi.c b/drivers/iio/gyro/fxas2100x_spi.c
new file mode 100644
index 000000000000..10f856ba6f47
--- /dev/null
+++ b/drivers/iio/gyro/fxas2100x_spi.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for NXP FXAS2100x Gyroscope - SPI
+ *
+ * Copyright (C) 2018 Linaro Ltd.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "fxas2100x.h"
+
+static const struct regmap_config fxas2100x_regmap_spi_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = FXAS2100X_REG_CTRL3,
+};
+
+static int fxas2100x_spi_probe(struct spi_device *spi)
+{
+ const struct spi_device_id *id = spi_get_device_id(spi);
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_spi(spi, &fxas2100x_regmap_spi_conf);
+ if (IS_ERR(regmap)) {
+ dev_err(&spi->dev, "Failed to register spi regmap: %ld\n",
+ PTR_ERR(regmap));
+ return PTR_ERR(regmap);
+ }
+
+ return fxas2100x_core_probe(&spi->dev, regmap, spi->irq, id->name);
+}
+
+static int fxas2100x_spi_remove(struct spi_device *spi)
+{
+ fxas2100x_core_remove(&spi->dev);
+
+ return 0;
+}
+
+static const struct spi_device_id fxas2100x_spi_id[] = {
+ { "fxas2100x", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, fxas2100x_spi_id);
+
+static const struct of_device_id fxas2100x_spi_of_match[] = {
+ { .compatible = "nxp,fxas2100x", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, fxas2100x_spi_of_match);
+
+static struct spi_driver fxas2100x_spi_driver = {
+ .driver = {
+ .name = "fxas2100x_spi",
+ .pm = &fxas2100x_pm_ops,
+ .of_match_table = of_match_ptr(fxas2100x_spi_of_match),
+ },
+ .probe = fxas2100x_spi_probe,
+ .remove = fxas2100x_spi_remove,
+ .id_table = fxas2100x_spi_id,
+};
+module_spi_driver(fxas2100x_spi_driver);
+
+MODULE_AUTHOR("Rui Miguel Silva <rui.silva@xxxxxxxxxx>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("FXAS2100X SPI Gyro driver");
--
2.20.1
