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4e68cfbf34
Time to finally kill off the venerable (it was one of my first drivers) lis3l02dq driver in favour of adding support in the st sensors framework. This does loose us the event support that driver always had, but I think that will reappear at some point and in the meantime the maintenance advantages of dropping the 'special' driver for this one part outweigh the issues. It's worth noting this part is ancient and I may well be the only person who still has any on hardware running recent kernels. It has a few 'quirks'. - No WAI register so that just became optional. - A BDU option that really does block updates. Completely. Whatever you do, you don't get any more data with it set. It is documented the same as more modern parts but I presume they are actually clearing for updates after a read of both bytes! - Fixed scale. - It's too quick. Even at slowest rate (280Hz) I can't read out fast enough on my board (stargate 2) to beat new data coming in. Linus' repeat read patch doesn't help in this case. It just means I get 10 readings before dying... So in reality this will get used with software triggers only unless someone has this long out of production device on a quick board. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: Denis CIOCCA <denis.ciocca@st.com> Cc: Crestez Dan Leonard <leonard.crestez@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
156 lines
3.3 KiB
C
156 lines
3.3 KiB
C
/*
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* STMicroelectronics accelerometers driver
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*
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* Copyright 2012-2013 STMicroelectronics Inc.
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*
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* Denis Ciocca <denis.ciocca@st.com>
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*
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* Licensed under the GPL-2.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/common/st_sensors.h>
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#include <linux/iio/common/st_sensors_i2c.h>
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#include "st_accel.h"
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#ifdef CONFIG_OF
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static const struct of_device_id st_accel_of_match[] = {
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{
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.compatible = "st,lis3lv02dl-accel",
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.data = LIS3LV02DL_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm303dlh-accel",
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.data = LSM303DLH_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm303dlhc-accel",
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.data = LSM303DLHC_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lis3dh-accel",
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.data = LIS3DH_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm330d-accel",
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.data = LSM330D_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm330dl-accel",
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.data = LSM330DL_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm330dlc-accel",
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.data = LSM330DLC_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lis331dl-accel",
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.data = LIS331DL_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lis331dlh-accel",
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.data = LIS331DLH_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm303dl-accel",
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.data = LSM303DL_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm303dlm-accel",
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.data = LSM303DLM_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm330-accel",
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.data = LSM330_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lsm303agr-accel",
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.data = LSM303AGR_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,lis2dh12-accel",
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.data = LIS2DH12_ACCEL_DEV_NAME,
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},
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{
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.compatible = "st,h3lis331dl-accel",
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.data = H3LIS331DL_DRIVER_NAME,
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},
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{
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.compatible = "st,lis3l02dq",
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.data = LIS3L02DQ_ACCEL_DEV_NAME,
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, st_accel_of_match);
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#else
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#define st_accel_of_match NULL
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#endif
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static int st_accel_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct iio_dev *indio_dev;
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struct st_sensor_data *adata;
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int err;
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indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata));
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if (!indio_dev)
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return -ENOMEM;
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adata = iio_priv(indio_dev);
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st_sensors_of_i2c_probe(client, st_accel_of_match);
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st_sensors_i2c_configure(indio_dev, client, adata);
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err = st_accel_common_probe(indio_dev);
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if (err < 0)
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return err;
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return 0;
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}
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static int st_accel_i2c_remove(struct i2c_client *client)
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{
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st_accel_common_remove(i2c_get_clientdata(client));
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return 0;
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}
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static const struct i2c_device_id st_accel_id_table[] = {
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{ LSM303DLH_ACCEL_DEV_NAME },
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{ LSM303DLHC_ACCEL_DEV_NAME },
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{ LIS3DH_ACCEL_DEV_NAME },
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{ LSM330D_ACCEL_DEV_NAME },
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{ LSM330DL_ACCEL_DEV_NAME },
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{ LSM330DLC_ACCEL_DEV_NAME },
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{ LIS331DLH_ACCEL_DEV_NAME },
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{ LSM303DL_ACCEL_DEV_NAME },
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{ LSM303DLM_ACCEL_DEV_NAME },
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{ LSM330_ACCEL_DEV_NAME },
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{ LSM303AGR_ACCEL_DEV_NAME },
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{ LIS2DH12_ACCEL_DEV_NAME },
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{ LIS3L02DQ_ACCEL_DEV_NAME },
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{},
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};
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MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
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static struct i2c_driver st_accel_driver = {
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.driver = {
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.name = "st-accel-i2c",
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.of_match_table = of_match_ptr(st_accel_of_match),
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},
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.probe = st_accel_i2c_probe,
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.remove = st_accel_i2c_remove,
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.id_table = st_accel_id_table,
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};
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module_i2c_driver(st_accel_driver);
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MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
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MODULE_LICENSE("GPL v2");
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