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Commit f9ab96e2 authored by Markus Pargmann's avatar Markus Pargmann Committed by Jonathan Cameron
Browse files

iio: bmc150: Add SPI driver 



Add a simple SPI driver which initializes the spi regmap for the bmc150
core driver.

Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 55637c38

drivers/iio/accel/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ config BMC150_ACCEL 
	select IIO_TRIGGERED_BUFFER

	select REGMAP

	select BMC150_ACCEL_I2C if I2C

	select BMC150_ACCEL_SPI if SPI

	help

	  Say yes here to build support for the following Bosch accelerometers:

	  BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
@@ -35,6 +36,10 @@ config BMC150_ACCEL_I2C 
	tristate

	select REGMAP_I2C



config BMC150_ACCEL_SPI

	tristate

	select REGMAP_SPI



config HID_SENSOR_ACCEL_3D

	depends on HID_SENSOR_HUB

	select IIO_BUFFER

drivers/iio/accel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/iio/accel/bmc150-accel-spi.c

0 → 100644
+91 −0
Original line number Diff line number Diff line 
/*

 * 3-axis accelerometer driver supporting SPI Bosch-Sensortec accelerometer chip

 * Copyright © 2015 Pengutronix, Markus Pargmann <mpa@pengutronix.de>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that 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.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, see <http://www.gnu.org/licenses/>.

 */



#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,

};



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,

				       true);

}



static int bmc150_accel_remove(struct spi_device *spi)

{

	return bmc150_accel_core_remove(&spi->dev);

}



static const struct acpi_device_id bmc150_accel_acpi_match[] = {

	{"BSBA0150",	bmc150},

	{"BMC150A",	bmc150},

	{"BMI055A",	bmi055},

	{"BMA0255",	bma255},

	{"BMA250E",	bma250e},

	{"BMA222E",	bma222e},

	{"BMA0280",	bma280},

	{ },

};

MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);



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 <mpa@pengutronix.de>");

MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");