Add a simple SPI driver which initializes the spi regmap for the bmc150 core driver.
Signed-off-by: Markus Pargmann <[email protected]> --- drivers/iio/accel/Kconfig | 10 +++++ drivers/iio/accel/Makefile | 1 + drivers/iio/accel/bmc150-accel-spi.c | 86 ++++++++++++++++++++++++++++++++++++ 3 files changed, 97 insertions(+) create mode 100644 drivers/iio/accel/bmc150-accel-spi.c diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index c63e981c38ff..bdb42069a767 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -40,6 +40,16 @@ config BMC150_ACCEL_I2C Say yes here to build support for I2C communication with the mentioned accelerometer. +config BMC150_ACCEL_SPI + tristate "SPI support" + depends on SPI + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + select REGMAP_SPI + help + Say yes here to build support for SPI communication with the + mentioned accelerometer. + endif config HID_SENSOR_ACCEL_3D diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile index 5ef8bdbad092..e579e93bf022 100644 --- a/drivers/iio/accel/Makefile +++ b/drivers/iio/accel/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_BMA180) += bma180.o obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o +obj-$(CONFIG_BMC150_ACCEL_SPI) += bmc150-accel-spi.o obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o obj-$(CONFIG_KXSD9) += kxsd9.o diff --git a/drivers/iio/accel/bmc150-accel-spi.c b/drivers/iio/accel/bmc150-accel-spi.c new file mode 100644 index 000000000000..c13fd2aa5f34 --- /dev/null +++ b/drivers/iio/accel/bmc150-accel-spi.c @@ -0,0 +1,86 @@ +/* + * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips: + * - BMC150 + * - BMI055 + * - BMA255 + * - BMA250E + * - BMA222E + * - BMA280 + * + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/regmap.h> +#include <linux/spi/spi.h> + +#include "bmc150-accel.h" + +static const struct regmap_config bmc150_spi_regmap_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x3f, + + .use_single_rw = false, + .cache_type = REGCACHE_NONE, +}; + +static int bmc150_accel_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, &bmc150_spi_regmap_conf); + if (IS_ERR(regmap)) { + dev_err(&spi->dev, "Failed to initialize spi regmap\n"); + return PTR_ERR(regmap); + } + + return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, + id->name, id->driver_data, true); +} + +static int bmc150_accel_remove(struct spi_device *spi) +{ + return bmc150_accel_core_remove(&spi->dev); +} + +static const struct spi_device_id bmc150_accel_id[] = { + {"bmc150_accel", bmc150}, + {"bmi055_accel", bmi055}, + {"bma255", bma255}, + {"bma250e", bma250e}, + {"bma222e", bma222e}, + {"bma280", bma280}, + {} +}; + +MODULE_DEVICE_TABLE(spi, bmc150_accel_id); + +static struct spi_driver bmc150_accel_driver = { + .driver = { + .name = "bmc150_accel_spi", + .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match), + .pm = &bmc150_accel_pm_ops, + }, + .probe = bmc150_accel_probe, + .remove = bmc150_accel_remove, + .id_table = bmc150_accel_id, +}; +module_spi_driver(bmc150_accel_driver); + +MODULE_AUTHOR("Markus Pargmann <[email protected]>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMC150 SPI accelerometer driver"); -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
