iio: bmg160: Add SPI driver

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index 94526b13d49fbb435b628023663ae36336331d8f..e816d29d6a62353540e2885156a181e9cefa6b41 100644 (file)
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -56,18 +56,23 @@ config BMG160
        select IIO_BUFFER
        select IIO_TRIGGERED_BUFFER
        select BMG160_I2C if (I2C)
+       select BMG160_SPI if (SPI)
        help
          Say yes here to build support for BOSCH BMG160 Tri-axis Gyro Sensor
          driver connected via I2C or SPI. This driver also supports BMI055
          gyroscope.
 
          This driver can also be built as a module.  If so, the module
-         will be called bmg160_i2c.
+         will be called bmg160_i2c or bmg160_spi.
 
 config BMG160_I2C
        tristate
        select REGMAP_I2C
 
+config BMG160_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 6084010415506be62d3b2b8daa61f15c913690be..f866a4be0667c19bb17c138f0e4508bc3bc67aa4 100644 (file)
--- a/drivers/iio/gyro/Makefile
+++ b/drivers/iio/gyro/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_ADIS16260) += adis16260.o
 obj-$(CONFIG_ADXRS450) += adxrs450.o
 obj-$(CONFIG_BMG160) += bmg160_core.o
 obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o
+obj-$(CONFIG_BMG160_SPI) += bmg160_spi.o
 
 obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
 

diff --git a/drivers/iio/gyro/bmg160_spi.c b/drivers/iio/gyro/bmg160_spi.c
new file mode 100644 (file)
index 0000000..021ea5f
--- /dev/null
+++ b/drivers/iio/gyro/bmg160_spi.c
@@ -0,0 +1,57 @@
+#include <linux/spi/spi.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+
+#include "bmg160.h"
+
+static const struct regmap_config bmg160_regmap_spi_conf = {
+       .reg_bits = 8,
+       .val_bits = 8,
+       .max_register = 0x3f,
+};
+
+static int bmg160_spi_probe(struct spi_device *spi)
+{
+       struct regmap *regmap;
+       const struct spi_device_id *id = spi_get_device_id(spi);
+
+       regmap = devm_regmap_init_spi(spi, &bmg160_regmap_spi_conf);
+       if (IS_ERR(regmap)) {
+               dev_err(&spi->dev, "Failed to register spi regmap %d\n",
+                       (int)PTR_ERR(regmap));
+               return PTR_ERR(regmap);
+       }
+
+       return bmg160_core_probe(&spi->dev, regmap, spi->irq, id->name);
+}
+
+static int bmg160_spi_remove(struct spi_device *spi)
+{
+       bmg160_core_remove(&spi->dev);
+
+       return 0;
+}
+
+static const struct spi_device_id bmg160_spi_id[] = {
+       {"bmg160", 0},
+       {"bmi055_gyro", 0},
+       {}
+};
+
+MODULE_DEVICE_TABLE(spi, bmg160_spi_id);
+
+static struct spi_driver bmg160_spi_driver = {
+       .driver = {
+               .name   = "bmg160_spi",
+               .pm     = &bmg160_pm_ops,
+       },
+       .probe          = bmg160_spi_probe,
+       .remove         = bmg160_spi_remove,
+       .id_table       = bmg160_spi_id,
+};
+module_spi_driver(bmg160_spi_driver);
+
+MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMG160 SPI Gyro driver");