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iio: bmc150: Split the driver into core and i2c

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Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Markus Pargmann 2015-09-21 12:55:15 +02:00 committed by Jonathan Cameron
parent 19c95d63e7
commit 55637c3837
5 changed files with 146 additions and 74 deletions
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9
drivers/iio/accel/Kconfig
View File

@ -19,21 +19,22 @@ config BMA180
config BMC150_ACCEL
tristate "Bosch BMC150 Accelerometer Driver"
depends on I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select REGMAP
select REGMAP_I2C
select BMC150_ACCEL_I2C if I2C
help
Say yes here to build support for the following Bosch accelerometers:
BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
Currently this only supports the device via an i2c interface.
This is a combo module with both accelerometer and magnetometer.
This driver is only implementing accelerometer part, which has
its own address and register map.
config BMC150_ACCEL_I2C
tristate
select REGMAP_I2C
config HID_SENSOR_ACCEL_3D
depends on HID_SENSOR_HUB
select IIO_BUFFER

3
drivers/iio/accel/Makefile
View File

@ -4,7 +4,8 @@
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_BMA180) += bma180.o
obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel.o
obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o
obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o
obj-$(CONFIG_KXSD9) += kxsd9.o

86
drivers/iio/accel/bmc150-accel.c → drivers/iio/accel/bmc150-accel-core.c
View File

@ -37,6 +37,8 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/regmap.h>
#include "bmc150-accel.h"
#define BMC150_ACCEL_DRV_NAME "bmc150_accel"
#define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event"
@ -1014,15 +1016,6 @@ static const struct iio_chan_spec bmc150_accel_channels[] =
static const struct iio_chan_spec bma280_accel_channels[] =
BMC150_ACCEL_CHANNELS(14);
enum {
bmc150,
bmi055,
bma255,
bma250e,
bma222e,
bma280,
};
static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
[bmc150] = {
.name = "BMC150A",
@ -1553,33 +1546,23 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
return 0;
}
static int bmc150_accel_probe(struct i2c_client *client,
const struct i2c_device_id *id)
int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name, bool block_supported)
{
struct bmc150_accel_data *data;
struct iio_dev *indio_dev;
int ret;
const char *name = NULL;
struct device *dev;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->dev = &client->dev;
dev = &client->dev;
data->irq = client->irq;
dev_set_drvdata(dev, indio_dev);
data->dev = dev;
data->irq = irq;
data->regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
if (IS_ERR(data->regmap)) {
dev_err(dev, "Failed to initialize i2c regmap\n");
return PTR_ERR(data->regmap);
}
if (id)
name = id->name;
data->regmap = regmap;
ret = bmc150_accel_chip_init(data);
if (ret < 0)
@ -1633,9 +1616,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
if (ret)
goto err_buffer_cleanup;
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
if (block_supported) {
indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
indio_dev->info = &bmc150_accel_info_fifo;
indio_dev->buffer->attrs = bmc150_accel_fifo_attributes;
@ -1644,7 +1625,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(data->dev, "Unable to register iio device\n");
dev_err(dev, "Unable to register iio device\n");
goto err_trigger_unregister;
}
@ -1667,10 +1648,11 @@ err_buffer_cleanup:
return ret;
}
EXPORT_SYMBOL_GPL(bmc150_accel_core_probe);
static int bmc150_accel_remove(struct i2c_client *client)
int bmc150_accel_core_remove(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_accel_data *data = iio_priv(indio_dev);
pm_runtime_disable(data->dev);
@ -1689,6 +1671,7 @@ static int bmc150_accel_remove(struct i2c_client *client)
return 0;
}
EXPORT_SYMBOL_GPL(bmc150_accel_core_remove);
#ifdef CONFIG_PM_SLEEP
static int bmc150_accel_suspend(struct device *dev)
@ -1759,47 +1742,12 @@ static int bmc150_accel_runtime_resume(struct device *dev)
}
#endif
static const struct dev_pm_ops bmc150_accel_pm_ops = {
const struct dev_pm_ops bmc150_accel_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend, bmc150_accel_resume)
SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
bmc150_accel_runtime_resume, NULL)
};
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 i2c_device_id bmc150_accel_id[] = {
{"bmc150_accel", bmc150},
{"bmi055_accel", bmi055},
{"bma255", bma255},
{"bma250e", bma250e},
{"bma222e", bma222e},
{"bma280", bma280},
{}
};
MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
static struct i2c_driver bmc150_accel_driver = {
.driver = {
.name = BMC150_ACCEL_DRV_NAME,
.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_i2c_driver(bmc150_accel_driver);
EXPORT_SYMBOL_GPL(bmc150_accel_pm_ops);
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");

102
drivers/iio/accel/bmc150-accel-i2c.c Normal file
View File

@ -0,0 +1,102 @@
/*
* 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/i2c.h>
#include <linux/module.h>
#include <linux/acpi.h>
#include <linux/regmap.h>
#include "bmc150-accel.h"
static const struct regmap_config bmc150_i2c_regmap_conf = {
.reg_bits = 8,
.val_bits = 8,
};
static int bmc150_accel_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct regmap *regmap;
const char *name = NULL;
bool block_supported =
i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_I2C_BLOCK);
regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
if (IS_ERR(regmap)) {
dev_err(&client->dev, "Failed to initialize i2c regmap\n");
return PTR_ERR(regmap);
}
if (id)
name = id->name;
return bmc150_accel_core_probe(&client->dev, regmap, client->irq, name,
block_supported);
}
static int bmc150_accel_remove(struct i2c_client *client)
{
return bmc150_accel_core_remove(&client->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 i2c_device_id bmc150_accel_id[] = {
{"bmc150_accel", bmc150},
{"bmi055_accel", bmi055},
{"bma255", bma255},
{"bma250e", bma250e},
{"bma222e", bma222e},
{"bma280", bma280},
{}
};
MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
static struct i2c_driver bmc150_accel_driver = {
.driver = {
.name = "bmc150_accel_i2c",
.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_i2c_driver(bmc150_accel_driver);
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");

20
drivers/iio/accel/bmc150-accel.h Normal file
View File

@ -0,0 +1,20 @@
#ifndef _BMC150_ACCEL_H_
#define _BMC150_ACCEL_H_
struct regmap;
enum {
bmc150,
bmi055,
bma255,
bma250e,
bma222e,
bma280,
};
int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name, bool block_supported);
int bmc150_accel_core_remove(struct device *dev);
extern const struct dev_pm_ops bmc150_accel_pm_ops;
#endif /* _BMC150_ACCEL_H_ */