mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 06:04:14 +08:00
062809ef77
This patch is meant to replace the i2c/spi transfer functions with regmap. SPI framework requires DMA safe buffers so let's add GFP_DMA flag for memory allocation used by bulk_read functions. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* STMicroelectronics gyroscopes driver
|
|
*
|
|
* Copyright 2012-2013 STMicroelectronics Inc.
|
|
*
|
|
* Denis Ciocca <denis.ciocca@st.com>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/iio/iio.h>
|
|
|
|
#include <linux/iio/common/st_sensors.h>
|
|
#include <linux/iio/common/st_sensors_i2c.h>
|
|
#include "st_gyro.h"
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id st_gyro_of_match[] = {
|
|
{
|
|
.compatible = "st,l3g4200d-gyro",
|
|
.data = L3G4200D_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,lsm330d-gyro",
|
|
.data = LSM330D_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,lsm330dl-gyro",
|
|
.data = LSM330DL_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,lsm330dlc-gyro",
|
|
.data = LSM330DLC_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,l3gd20-gyro",
|
|
.data = L3GD20_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,l3gd20h-gyro",
|
|
.data = L3GD20H_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,l3g4is-gyro",
|
|
.data = L3G4IS_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,lsm330-gyro",
|
|
.data = LSM330_GYRO_DEV_NAME,
|
|
},
|
|
{
|
|
.compatible = "st,lsm9ds0-gyro",
|
|
.data = LSM9DS0_GYRO_DEV_NAME,
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, st_gyro_of_match);
|
|
#else
|
|
#define st_gyro_of_match NULL
|
|
#endif
|
|
|
|
static int st_gyro_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
const struct st_sensor_settings *settings;
|
|
struct st_sensor_data *gdata;
|
|
struct iio_dev *indio_dev;
|
|
int err;
|
|
|
|
st_sensors_of_name_probe(&client->dev, st_gyro_of_match,
|
|
client->name, sizeof(client->name));
|
|
|
|
settings = st_gyro_get_settings(client->name);
|
|
if (!settings) {
|
|
dev_err(&client->dev, "device name %s not recognized.\n",
|
|
client->name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
gdata = iio_priv(indio_dev);
|
|
gdata->sensor_settings = (struct st_sensor_settings *)settings;
|
|
|
|
err = st_sensors_i2c_configure(indio_dev, client);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = st_gyro_common_probe(indio_dev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int st_gyro_i2c_remove(struct i2c_client *client)
|
|
{
|
|
st_gyro_common_remove(i2c_get_clientdata(client));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id st_gyro_id_table[] = {
|
|
{ L3G4200D_GYRO_DEV_NAME },
|
|
{ LSM330D_GYRO_DEV_NAME },
|
|
{ LSM330DL_GYRO_DEV_NAME },
|
|
{ LSM330DLC_GYRO_DEV_NAME },
|
|
{ L3GD20_GYRO_DEV_NAME },
|
|
{ L3GD20H_GYRO_DEV_NAME },
|
|
{ L3G4IS_GYRO_DEV_NAME },
|
|
{ LSM330_GYRO_DEV_NAME },
|
|
{ LSM9DS0_GYRO_DEV_NAME },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
|
|
|
|
static struct i2c_driver st_gyro_driver = {
|
|
.driver = {
|
|
.name = "st-gyro-i2c",
|
|
.of_match_table = of_match_ptr(st_gyro_of_match),
|
|
},
|
|
.probe = st_gyro_i2c_probe,
|
|
.remove = st_gyro_i2c_remove,
|
|
.id_table = st_gyro_id_table,
|
|
};
|
|
module_i2c_driver(st_gyro_driver);
|
|
|
|
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
|
|
MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
|
|
MODULE_LICENSE("GPL v2");
|