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iio:accel: Add STMicroelectronics accelerometers driver
This patch adds a generic accelerometer driver for STMicroelectronics accelerometers, currently it supports: LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC, LIS331DLH, LSM303DL, LSM303DLM, LSM330. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
parent
23491b513b
commit
d62511689d
7 changed files with 868 additions and 0 deletions
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@ -21,4 +21,35 @@ config KXSD9
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Say yes here to build support for the Kionix KXSD9 accelerometer.
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Currently this only supports the device via an SPI interface.
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config IIO_ST_ACCEL_3AXIS
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tristate "STMicroelectronics accelerometers 3-Axis Driver"
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depends on (I2C || SPI_MASTER) && SYSFS
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select IIO_ST_SENSORS_CORE
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select IIO_ST_ACCEL_I2C_3AXIS if (I2C)
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select IIO_ST_ACCEL_SPI_3AXIS if (SPI_MASTER)
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select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
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select IIO_ST_ACCEL_BUFFER if (IIO_TRIGGERED_BUFFER)
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help
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Say yes here to build support for STMicroelectronics accelerometers:
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LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
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LIS331DLH, LSM303DL, LSM303DLM, LSM330.
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This driver can also be built as a module. If so, will be created
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these modules:
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- st_accel (core functions for the driver [it is mandatory]);
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- st_accel_i2c (necessary for the I2C devices [optional*]);
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- st_accel_spi (necessary for the SPI devices [optional*]);
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(*) one of these is necessary to do something.
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config IIO_ST_ACCEL_I2C_3AXIS
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tristate
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depends on IIO_ST_ACCEL_3AXIS
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depends on IIO_ST_SENSORS_I2C
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config IIO_ST_ACCEL_SPI_3AXIS
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tristate
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depends on IIO_ST_ACCEL_3AXIS
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depends on IIO_ST_SENSORS_SPI
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endmenu
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@ -3,4 +3,12 @@
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#
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obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
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obj-$(CONFIG_IIO_ST_ACCEL_3AXIS) += st_accel.o
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st_accel-y := st_accel_core.o
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st_accel-$(CONFIG_IIO_BUFFER) += st_accel_buffer.o
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obj-$(CONFIG_IIO_ST_ACCEL_I2C_3AXIS) += st_accel_i2c.o
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obj-$(CONFIG_IIO_ST_ACCEL_SPI_3AXIS) += st_accel_spi.o
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obj-$(CONFIG_KXSD9) += kxsd9.o
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47
drivers/iio/accel/st_accel.h
Normal file
47
drivers/iio/accel/st_accel.h
Normal file
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@ -0,0 +1,47 @@
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/*
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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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* v. 1.0.0
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* Licensed under the GPL-2.
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*/
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#ifndef ST_ACCEL_H
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#define ST_ACCEL_H
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#include <linux/types.h>
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#include <linux/iio/common/st_sensors.h>
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#define LSM303DLHC_ACCEL_DEV_NAME "lsm303dlhc_accel"
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#define LIS3DH_ACCEL_DEV_NAME "lis3dh"
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#define LSM330D_ACCEL_DEV_NAME "lsm330d_accel"
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#define LSM330DL_ACCEL_DEV_NAME "lsm330dl_accel"
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#define LSM330DLC_ACCEL_DEV_NAME "lsm330dlc_accel"
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#define LIS331DLH_ACCEL_DEV_NAME "lis331dlh"
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#define LSM303DL_ACCEL_DEV_NAME "lsm303dl_accel"
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#define LSM303DLH_ACCEL_DEV_NAME "lsm303dlh_accel"
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#define LSM303DLM_ACCEL_DEV_NAME "lsm303dlm_accel"
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#define LSM330_ACCEL_DEV_NAME "lsm330_accel"
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int st_accel_common_probe(struct iio_dev *indio_dev);
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void st_accel_common_remove(struct iio_dev *indio_dev);
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#ifdef CONFIG_IIO_BUFFER
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int st_accel_allocate_ring(struct iio_dev *indio_dev);
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void st_accel_deallocate_ring(struct iio_dev *indio_dev);
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int st_accel_trig_set_state(struct iio_trigger *trig, bool state);
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#define ST_ACCEL_TRIGGER_SET_STATE (&st_accel_trig_set_state)
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#else /* CONFIG_IIO_BUFFER */
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static inline int st_accel_allocate_ring(struct iio_dev *indio_dev)
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{
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return 0;
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}
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static inline void st_accel_deallocate_ring(struct iio_dev *indio_dev)
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{
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}
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#define ST_ACCEL_TRIGGER_SET_STATE NULL
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#endif /* CONFIG_IIO_BUFFER */
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#endif /* ST_ACCEL_H */
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114
drivers/iio/accel/st_accel_buffer.c
Normal file
114
drivers/iio/accel/st_accel_buffer.c
Normal file
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@ -0,0 +1,114 @@
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/*
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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/module.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/stat.h>
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#include <linux/interrupt.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/buffer.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/iio/triggered_buffer.h>
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#include <linux/iio/common/st_sensors.h>
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#include "st_accel.h"
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int st_accel_trig_set_state(struct iio_trigger *trig, bool state)
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{
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struct iio_dev *indio_dev = trig->private_data;
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return st_sensors_set_dataready_irq(indio_dev, state);
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}
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static int st_accel_buffer_preenable(struct iio_dev *indio_dev)
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{
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int err;
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err = st_sensors_set_enable(indio_dev, true);
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if (err < 0)
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goto st_accel_set_enable_error;
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err = iio_sw_buffer_preenable(indio_dev);
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st_accel_set_enable_error:
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return err;
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}
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static int st_accel_buffer_postenable(struct iio_dev *indio_dev)
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{
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int err;
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struct st_sensor_data *adata = iio_priv(indio_dev);
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adata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
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if (adata->buffer_data == NULL) {
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err = -ENOMEM;
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goto allocate_memory_error;
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}
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err = st_sensors_set_axis_enable(indio_dev,
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(u8)indio_dev->active_scan_mask[0]);
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if (err < 0)
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goto st_accel_buffer_postenable_error;
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err = iio_triggered_buffer_postenable(indio_dev);
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if (err < 0)
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goto st_accel_buffer_postenable_error;
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return err;
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st_accel_buffer_postenable_error:
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kfree(adata->buffer_data);
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allocate_memory_error:
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return err;
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}
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static int st_accel_buffer_predisable(struct iio_dev *indio_dev)
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{
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int err;
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struct st_sensor_data *adata = iio_priv(indio_dev);
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err = iio_triggered_buffer_predisable(indio_dev);
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if (err < 0)
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goto st_accel_buffer_predisable_error;
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err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
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if (err < 0)
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goto st_accel_buffer_predisable_error;
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err = st_sensors_set_enable(indio_dev, false);
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st_accel_buffer_predisable_error:
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kfree(adata->buffer_data);
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return err;
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}
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static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = {
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.preenable = &st_accel_buffer_preenable,
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.postenable = &st_accel_buffer_postenable,
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.predisable = &st_accel_buffer_predisable,
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};
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int st_accel_allocate_ring(struct iio_dev *indio_dev)
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{
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return iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
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&st_sensors_trigger_handler, &st_accel_buffer_setup_ops);
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}
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void st_accel_deallocate_ring(struct iio_dev *indio_dev)
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{
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iio_triggered_buffer_cleanup(indio_dev);
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}
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MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics accelerometers buffer");
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MODULE_LICENSE("GPL v2");
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495
drivers/iio/accel/st_accel_core.c
Normal file
495
drivers/iio/accel/st_accel_core.c
Normal file
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@ -0,0 +1,495 @@
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/*
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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/errno.h>
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include <linux/interrupt.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/irq.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/iio/buffer.h>
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#include <linux/iio/common/st_sensors.h>
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#include "st_accel.h"
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/* DEFAULT VALUE FOR SENSORS */
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#define ST_ACCEL_DEFAULT_OUT_X_L_ADDR 0x28
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#define ST_ACCEL_DEFAULT_OUT_Y_L_ADDR 0x2a
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#define ST_ACCEL_DEFAULT_OUT_Z_L_ADDR 0x2c
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/* FULLSCALE */
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#define ST_ACCEL_FS_AVL_2G 2
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#define ST_ACCEL_FS_AVL_4G 4
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#define ST_ACCEL_FS_AVL_6G 6
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#define ST_ACCEL_FS_AVL_8G 8
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#define ST_ACCEL_FS_AVL_16G 16
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/* CUSTOM VALUES FOR SENSOR 1 */
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#define ST_ACCEL_1_WAI_EXP 0x33
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#define ST_ACCEL_1_ODR_ADDR 0x20
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#define ST_ACCEL_1_ODR_MASK 0xf0
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#define ST_ACCEL_1_ODR_AVL_1HZ_VAL 0x01
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#define ST_ACCEL_1_ODR_AVL_10HZ_VAL 0x02
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#define ST_ACCEL_1_ODR_AVL_25HZ_VAL 0x03
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#define ST_ACCEL_1_ODR_AVL_50HZ_VAL 0x04
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#define ST_ACCEL_1_ODR_AVL_100HZ_VAL 0x05
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#define ST_ACCEL_1_ODR_AVL_200HZ_VAL 0x06
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#define ST_ACCEL_1_ODR_AVL_400HZ_VAL 0x07
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#define ST_ACCEL_1_ODR_AVL_1600HZ_VAL 0x08
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#define ST_ACCEL_1_FS_ADDR 0x23
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#define ST_ACCEL_1_FS_MASK 0x30
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#define ST_ACCEL_1_FS_AVL_2_VAL 0x00
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#define ST_ACCEL_1_FS_AVL_4_VAL 0x01
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#define ST_ACCEL_1_FS_AVL_8_VAL 0x02
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#define ST_ACCEL_1_FS_AVL_16_VAL 0x03
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#define ST_ACCEL_1_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
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#define ST_ACCEL_1_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
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#define ST_ACCEL_1_FS_AVL_8_GAIN IIO_G_TO_M_S_2(4000)
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#define ST_ACCEL_1_FS_AVL_16_GAIN IIO_G_TO_M_S_2(12000)
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#define ST_ACCEL_1_BDU_ADDR 0x23
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#define ST_ACCEL_1_BDU_MASK 0x80
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#define ST_ACCEL_1_DRDY_IRQ_ADDR 0x22
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#define ST_ACCEL_1_DRDY_IRQ_MASK 0x10
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#define ST_ACCEL_1_MULTIREAD_BIT true
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/* CUSTOM VALUES FOR SENSOR 2 */
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#define ST_ACCEL_2_WAI_EXP 0x32
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#define ST_ACCEL_2_ODR_ADDR 0x20
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#define ST_ACCEL_2_ODR_MASK 0x18
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#define ST_ACCEL_2_ODR_AVL_50HZ_VAL 0x00
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#define ST_ACCEL_2_ODR_AVL_100HZ_VAL 0x01
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#define ST_ACCEL_2_ODR_AVL_400HZ_VAL 0x02
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#define ST_ACCEL_2_ODR_AVL_1000HZ_VAL 0x03
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#define ST_ACCEL_2_PW_ADDR 0x20
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#define ST_ACCEL_2_PW_MASK 0xe0
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#define ST_ACCEL_2_FS_ADDR 0x23
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#define ST_ACCEL_2_FS_MASK 0x30
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#define ST_ACCEL_2_FS_AVL_2_VAL 0X00
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#define ST_ACCEL_2_FS_AVL_4_VAL 0X01
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#define ST_ACCEL_2_FS_AVL_8_VAL 0x03
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#define ST_ACCEL_2_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
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#define ST_ACCEL_2_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
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#define ST_ACCEL_2_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900)
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#define ST_ACCEL_2_BDU_ADDR 0x23
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#define ST_ACCEL_2_BDU_MASK 0x80
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#define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22
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#define ST_ACCEL_2_DRDY_IRQ_MASK 0x02
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#define ST_ACCEL_2_MULTIREAD_BIT true
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/* CUSTOM VALUES FOR SENSOR 3 */
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#define ST_ACCEL_3_WAI_EXP 0x40
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#define ST_ACCEL_3_ODR_ADDR 0x20
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#define ST_ACCEL_3_ODR_MASK 0xf0
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#define ST_ACCEL_3_ODR_AVL_3HZ_VAL 0x01
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#define ST_ACCEL_3_ODR_AVL_6HZ_VAL 0x02
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#define ST_ACCEL_3_ODR_AVL_12HZ_VAL 0x03
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#define ST_ACCEL_3_ODR_AVL_25HZ_VAL 0x04
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#define ST_ACCEL_3_ODR_AVL_50HZ_VAL 0x05
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#define ST_ACCEL_3_ODR_AVL_100HZ_VAL 0x06
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#define ST_ACCEL_3_ODR_AVL_200HZ_VAL 0x07
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#define ST_ACCEL_3_ODR_AVL_400HZ_VAL 0x08
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#define ST_ACCEL_3_ODR_AVL_800HZ_VAL 0x09
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#define ST_ACCEL_3_ODR_AVL_1600HZ_VAL 0x0a
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#define ST_ACCEL_3_FS_ADDR 0x24
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#define ST_ACCEL_3_FS_MASK 0x38
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#define ST_ACCEL_3_FS_AVL_2_VAL 0X00
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#define ST_ACCEL_3_FS_AVL_4_VAL 0X01
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#define ST_ACCEL_3_FS_AVL_6_VAL 0x02
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#define ST_ACCEL_3_FS_AVL_8_VAL 0x03
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#define ST_ACCEL_3_FS_AVL_16_VAL 0x04
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#define ST_ACCEL_3_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61)
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#define ST_ACCEL_3_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122)
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#define ST_ACCEL_3_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183)
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#define ST_ACCEL_3_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244)
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#define ST_ACCEL_3_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732)
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#define ST_ACCEL_3_BDU_ADDR 0x20
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#define ST_ACCEL_3_BDU_MASK 0x08
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#define ST_ACCEL_3_DRDY_IRQ_ADDR 0x23
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#define ST_ACCEL_3_DRDY_IRQ_MASK 0x80
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#define ST_ACCEL_3_IG1_EN_ADDR 0x23
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#define ST_ACCEL_3_IG1_EN_MASK 0x08
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#define ST_ACCEL_3_MULTIREAD_BIT false
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static const struct iio_chan_spec st_accel_12bit_channels[] = {
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ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
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ST_SENSORS_DEFAULT_12_REALBITS, ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
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ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
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ST_SENSORS_DEFAULT_12_REALBITS, ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
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ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Z, IIO_MOD_Z, IIO_LE,
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ST_SENSORS_DEFAULT_12_REALBITS, ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
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IIO_CHAN_SOFT_TIMESTAMP(3)
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};
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static const struct iio_chan_spec st_accel_16bit_channels[] = {
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ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
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ST_SENSORS_DEFAULT_16_REALBITS, ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
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ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
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ST_SENSORS_DEFAULT_16_REALBITS, ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
|
||||
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Z, IIO_MOD_Z, IIO_LE,
|
||||
ST_SENSORS_DEFAULT_16_REALBITS, ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
|
||||
IIO_CHAN_SOFT_TIMESTAMP(3)
|
||||
};
|
||||
|
||||
static const struct st_sensors st_accel_sensors[] = {
|
||||
{
|
||||
.wai = ST_ACCEL_1_WAI_EXP,
|
||||
.sensors_supported = {
|
||||
[0] = LIS3DH_ACCEL_DEV_NAME,
|
||||
[1] = LSM303DLHC_ACCEL_DEV_NAME,
|
||||
[2] = LSM330D_ACCEL_DEV_NAME,
|
||||
[3] = LSM330DL_ACCEL_DEV_NAME,
|
||||
[4] = LSM330DLC_ACCEL_DEV_NAME,
|
||||
},
|
||||
.ch = (struct iio_chan_spec *)st_accel_12bit_channels,
|
||||
.odr = {
|
||||
.addr = ST_ACCEL_1_ODR_ADDR,
|
||||
.mask = ST_ACCEL_1_ODR_MASK,
|
||||
.odr_avl = {
|
||||
{ 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
|
||||
{ 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
|
||||
{ 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
|
||||
{ 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
|
||||
{ 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
|
||||
{ 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
|
||||
{ 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
|
||||
{ 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
|
||||
},
|
||||
},
|
||||
.pw = {
|
||||
.addr = ST_ACCEL_1_ODR_ADDR,
|
||||
.mask = ST_ACCEL_1_ODR_MASK,
|
||||
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
|
||||
},
|
||||
.enable_axis = {
|
||||
.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
|
||||
.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
|
||||
},
|
||||
.fs = {
|
||||
.addr = ST_ACCEL_1_FS_ADDR,
|
||||
.mask = ST_ACCEL_1_FS_MASK,
|
||||
.fs_avl = {
|
||||
[0] = {
|
||||
.num = ST_ACCEL_FS_AVL_2G,
|
||||
.value = ST_ACCEL_1_FS_AVL_2_VAL,
|
||||
.gain = ST_ACCEL_1_FS_AVL_2_GAIN,
|
||||
},
|
||||
[1] = {
|
||||
.num = ST_ACCEL_FS_AVL_4G,
|
||||
.value = ST_ACCEL_1_FS_AVL_4_VAL,
|
||||
.gain = ST_ACCEL_1_FS_AVL_4_GAIN,
|
||||
},
|
||||
[2] = {
|
||||
.num = ST_ACCEL_FS_AVL_8G,
|
||||
.value = ST_ACCEL_1_FS_AVL_8_VAL,
|
||||
.gain = ST_ACCEL_1_FS_AVL_8_GAIN,
|
||||
},
|
||||
[3] = {
|
||||
.num = ST_ACCEL_FS_AVL_16G,
|
||||
.value = ST_ACCEL_1_FS_AVL_16_VAL,
|
||||
.gain = ST_ACCEL_1_FS_AVL_16_GAIN,
|
||||
},
|
||||
},
|
||||
},
|
||||
.bdu = {
|
||||
.addr = ST_ACCEL_1_BDU_ADDR,
|
||||
.mask = ST_ACCEL_1_BDU_MASK,
|
||||
},
|
||||
.drdy_irq = {
|
||||
.addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
|
||||
.mask = ST_ACCEL_1_DRDY_IRQ_MASK,
|
||||
},
|
||||
.multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
|
||||
.bootime = 2,
|
||||
},
|
||||
{
|
||||
.wai = ST_ACCEL_2_WAI_EXP,
|
||||
.sensors_supported = {
|
||||
[0] = LIS331DLH_ACCEL_DEV_NAME,
|
||||
[1] = LSM303DL_ACCEL_DEV_NAME,
|
||||
[2] = LSM303DLH_ACCEL_DEV_NAME,
|
||||
[3] = LSM303DLM_ACCEL_DEV_NAME,
|
||||
},
|
||||
.ch = (struct iio_chan_spec *)st_accel_12bit_channels,
|
||||
.odr = {
|
||||
.addr = ST_ACCEL_2_ODR_ADDR,
|
||||
.mask = ST_ACCEL_2_ODR_MASK,
|
||||
.odr_avl = {
|
||||
{ 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
|
||||
{ 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
|
||||
{ 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
|
||||
{ 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
|
||||
},
|
||||
},
|
||||
.pw = {
|
||||
.addr = ST_ACCEL_2_PW_ADDR,
|
||||
.mask = ST_ACCEL_2_PW_MASK,
|
||||
.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
|
||||
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
|
||||
},
|
||||
.enable_axis = {
|
||||
.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
|
||||
.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
|
||||
},
|
||||
.fs = {
|
||||
.addr = ST_ACCEL_2_FS_ADDR,
|
||||
.mask = ST_ACCEL_2_FS_MASK,
|
||||
.fs_avl = {
|
||||
[0] = {
|
||||
.num = ST_ACCEL_FS_AVL_2G,
|
||||
.value = ST_ACCEL_2_FS_AVL_2_VAL,
|
||||
.gain = ST_ACCEL_2_FS_AVL_2_GAIN,
|
||||
},
|
||||
[1] = {
|
||||
.num = ST_ACCEL_FS_AVL_4G,
|
||||
.value = ST_ACCEL_2_FS_AVL_4_VAL,
|
||||
.gain = ST_ACCEL_2_FS_AVL_4_GAIN,
|
||||
},
|
||||
[2] = {
|
||||
.num = ST_ACCEL_FS_AVL_8G,
|
||||
.value = ST_ACCEL_2_FS_AVL_8_VAL,
|
||||
.gain = ST_ACCEL_2_FS_AVL_8_GAIN,
|
||||
},
|
||||
},
|
||||
},
|
||||
.bdu = {
|
||||
.addr = ST_ACCEL_2_BDU_ADDR,
|
||||
.mask = ST_ACCEL_2_BDU_MASK,
|
||||
},
|
||||
.drdy_irq = {
|
||||
.addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
|
||||
.mask = ST_ACCEL_2_DRDY_IRQ_MASK,
|
||||
},
|
||||
.multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
|
||||
.bootime = 2,
|
||||
},
|
||||
{
|
||||
.wai = ST_ACCEL_3_WAI_EXP,
|
||||
.sensors_supported = {
|
||||
[0] = LSM330_ACCEL_DEV_NAME,
|
||||
},
|
||||
.ch = (struct iio_chan_spec *)st_accel_16bit_channels,
|
||||
.odr = {
|
||||
.addr = ST_ACCEL_3_ODR_ADDR,
|
||||
.mask = ST_ACCEL_3_ODR_MASK,
|
||||
.odr_avl = {
|
||||
{ 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
|
||||
{ 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
|
||||
{ 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
|
||||
{ 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
|
||||
{ 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
|
||||
{ 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
|
||||
{ 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
|
||||
{ 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
|
||||
{ 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
|
||||
{ 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
|
||||
},
|
||||
},
|
||||
.pw = {
|
||||
.addr = ST_ACCEL_3_ODR_ADDR,
|
||||
.mask = ST_ACCEL_3_ODR_MASK,
|
||||
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
|
||||
},
|
||||
.enable_axis = {
|
||||
.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
|
||||
.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
|
||||
},
|
||||
.fs = {
|
||||
.addr = ST_ACCEL_3_FS_ADDR,
|
||||
.mask = ST_ACCEL_3_FS_MASK,
|
||||
.fs_avl = {
|
||||
[0] = {
|
||||
.num = ST_ACCEL_FS_AVL_2G,
|
||||
.value = ST_ACCEL_3_FS_AVL_2_VAL,
|
||||
.gain = ST_ACCEL_3_FS_AVL_2_GAIN,
|
||||
},
|
||||
[1] = {
|
||||
.num = ST_ACCEL_FS_AVL_4G,
|
||||
.value = ST_ACCEL_3_FS_AVL_4_VAL,
|
||||
.gain = ST_ACCEL_3_FS_AVL_4_GAIN,
|
||||
},
|
||||
[2] = {
|
||||
.num = ST_ACCEL_FS_AVL_6G,
|
||||
.value = ST_ACCEL_3_FS_AVL_6_VAL,
|
||||
.gain = ST_ACCEL_3_FS_AVL_6_GAIN,
|
||||
},
|
||||
[3] = {
|
||||
.num = ST_ACCEL_FS_AVL_8G,
|
||||
.value = ST_ACCEL_3_FS_AVL_8_VAL,
|
||||
.gain = ST_ACCEL_3_FS_AVL_8_GAIN,
|
||||
},
|
||||
[4] = {
|
||||
.num = ST_ACCEL_FS_AVL_16G,
|
||||
.value = ST_ACCEL_3_FS_AVL_16_VAL,
|
||||
.gain = ST_ACCEL_3_FS_AVL_16_GAIN,
|
||||
},
|
||||
},
|
||||
},
|
||||
.bdu = {
|
||||
.addr = ST_ACCEL_3_BDU_ADDR,
|
||||
.mask = ST_ACCEL_3_BDU_MASK,
|
||||
},
|
||||
.drdy_irq = {
|
||||
.addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
|
||||
.mask = ST_ACCEL_3_DRDY_IRQ_MASK,
|
||||
.ig1 = {
|
||||
.en_addr = ST_ACCEL_3_IG1_EN_ADDR,
|
||||
.en_mask = ST_ACCEL_3_IG1_EN_MASK,
|
||||
},
|
||||
},
|
||||
.multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
|
||||
.bootime = 2,
|
||||
},
|
||||
};
|
||||
|
||||
static int st_accel_read_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *ch, int *val,
|
||||
int *val2, long mask)
|
||||
{
|
||||
int err;
|
||||
struct st_sensor_data *adata = iio_priv(indio_dev);
|
||||
|
||||
switch (mask) {
|
||||
case IIO_CHAN_INFO_RAW:
|
||||
err = st_sensors_read_info_raw(indio_dev, ch, val);
|
||||
if (err < 0)
|
||||
goto read_error;
|
||||
|
||||
return IIO_VAL_INT;
|
||||
case IIO_CHAN_INFO_SCALE:
|
||||
*val = 0;
|
||||
*val2 = adata->current_fullscale->gain;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
read_error:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int st_accel_write_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *chan, int val, int val2, long mask)
|
||||
{
|
||||
int err;
|
||||
|
||||
switch (mask) {
|
||||
case IIO_CHAN_INFO_SCALE:
|
||||
err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static ST_SENSOR_DEV_ATTR_SAMP_FREQ();
|
||||
static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
|
||||
static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
|
||||
|
||||
static struct attribute *st_accel_attributes[] = {
|
||||
&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
|
||||
&iio_dev_attr_in_accel_scale_available.dev_attr.attr,
|
||||
&iio_dev_attr_sampling_frequency.dev_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct attribute_group st_accel_attribute_group = {
|
||||
.attrs = st_accel_attributes,
|
||||
};
|
||||
|
||||
static const struct iio_info accel_info = {
|
||||
.driver_module = THIS_MODULE,
|
||||
.attrs = &st_accel_attribute_group,
|
||||
.read_raw = &st_accel_read_raw,
|
||||
.write_raw = &st_accel_write_raw,
|
||||
};
|
||||
|
||||
static const struct iio_trigger_ops st_accel_trigger_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
.set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
|
||||
};
|
||||
|
||||
int st_accel_common_probe(struct iio_dev *indio_dev)
|
||||
{
|
||||
int err;
|
||||
struct st_sensor_data *adata = iio_priv(indio_dev);
|
||||
|
||||
indio_dev->modes = INDIO_DIRECT_MODE;
|
||||
indio_dev->info = &accel_info;
|
||||
|
||||
err = st_sensors_check_device_support(indio_dev,
|
||||
ARRAY_SIZE(st_accel_sensors), st_accel_sensors);
|
||||
if (err < 0)
|
||||
goto st_accel_common_probe_error;
|
||||
|
||||
adata->multiread_bit = adata->sensor->multi_read_bit;
|
||||
indio_dev->channels = adata->sensor->ch;
|
||||
indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
|
||||
|
||||
adata->current_fullscale = (struct st_sensor_fullscale_avl *)
|
||||
&adata->sensor->fs.fs_avl[0];
|
||||
adata->odr = adata->sensor->odr.odr_avl[0].hz;
|
||||
|
||||
err = st_sensors_init_sensor(indio_dev);
|
||||
if (err < 0)
|
||||
goto st_accel_common_probe_error;
|
||||
|
||||
if (adata->get_irq_data_ready(indio_dev) > 0) {
|
||||
err = st_accel_allocate_ring(indio_dev);
|
||||
if (err < 0)
|
||||
goto st_accel_common_probe_error;
|
||||
|
||||
err = st_sensors_allocate_trigger(indio_dev,
|
||||
&st_accel_trigger_ops);
|
||||
if (err < 0)
|
||||
goto st_accel_probe_trigger_error;
|
||||
}
|
||||
|
||||
err = iio_device_register(indio_dev);
|
||||
if (err)
|
||||
goto st_accel_device_register_error;
|
||||
|
||||
return err;
|
||||
|
||||
st_accel_device_register_error:
|
||||
if (adata->get_irq_data_ready(indio_dev) > 0)
|
||||
st_sensors_deallocate_trigger(indio_dev);
|
||||
st_accel_probe_trigger_error:
|
||||
if (adata->get_irq_data_ready(indio_dev) > 0)
|
||||
st_accel_deallocate_ring(indio_dev);
|
||||
st_accel_common_probe_error:
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL(st_accel_common_probe);
|
||||
|
||||
void st_accel_common_remove(struct iio_dev *indio_dev)
|
||||
{
|
||||
struct st_sensor_data *adata = iio_priv(indio_dev);
|
||||
|
||||
iio_device_unregister(indio_dev);
|
||||
if (adata->get_irq_data_ready(indio_dev) > 0) {
|
||||
st_sensors_deallocate_trigger(indio_dev);
|
||||
st_accel_deallocate_ring(indio_dev);
|
||||
}
|
||||
iio_device_free(indio_dev);
|
||||
}
|
||||
EXPORT_SYMBOL(st_accel_common_remove);
|
||||
|
||||
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
|
||||
MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
|
||||
MODULE_LICENSE("GPL v2");
|
87
drivers/iio/accel/st_accel_i2c.c
Normal file
87
drivers/iio/accel/st_accel_i2c.c
Normal file
|
@ -0,0 +1,87 @@
|
|||
/*
|
||||
* STMicroelectronics accelerometers driver
|
||||
*
|
||||
* Copyright 2012-2013 STMicroelectronics Inc.
|
||||
*
|
||||
* Denis Ciocca <denis.ciocca@st.com>
|
||||
*
|
||||
* Licensed under the GPL-2.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/iio/trigger.h>
|
||||
|
||||
#include <linux/iio/common/st_sensors.h>
|
||||
#include <linux/iio/common/st_sensors_i2c.h>
|
||||
#include "st_accel.h"
|
||||
|
||||
static int st_accel_i2c_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct iio_dev *indio_dev;
|
||||
struct st_sensor_data *adata;
|
||||
int err;
|
||||
|
||||
indio_dev = iio_device_alloc(sizeof(*adata));
|
||||
if (indio_dev == NULL) {
|
||||
err = -ENOMEM;
|
||||
goto iio_device_alloc_error;
|
||||
}
|
||||
|
||||
adata = iio_priv(indio_dev);
|
||||
adata->dev = &client->dev;
|
||||
|
||||
st_sensors_i2c_configure(indio_dev, client, adata);
|
||||
|
||||
err = st_accel_common_probe(indio_dev);
|
||||
if (err < 0)
|
||||
goto st_accel_common_probe_error;
|
||||
|
||||
return 0;
|
||||
|
||||
st_accel_common_probe_error:
|
||||
iio_device_free(indio_dev);
|
||||
iio_device_alloc_error:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int st_accel_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
st_accel_common_remove(i2c_get_clientdata(client));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id st_accel_id_table[] = {
|
||||
{ LSM303DLH_ACCEL_DEV_NAME },
|
||||
{ LSM303DLHC_ACCEL_DEV_NAME },
|
||||
{ LIS3DH_ACCEL_DEV_NAME },
|
||||
{ LSM330D_ACCEL_DEV_NAME },
|
||||
{ LSM330DL_ACCEL_DEV_NAME },
|
||||
{ LSM330DLC_ACCEL_DEV_NAME },
|
||||
{ LIS331DLH_ACCEL_DEV_NAME },
|
||||
{ LSM303DL_ACCEL_DEV_NAME },
|
||||
{ LSM303DLM_ACCEL_DEV_NAME },
|
||||
{ LSM330_ACCEL_DEV_NAME },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
|
||||
|
||||
static struct i2c_driver st_accel_driver = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "st-accel-i2c",
|
||||
},
|
||||
.probe = st_accel_i2c_probe,
|
||||
.remove = st_accel_i2c_remove,
|
||||
.id_table = st_accel_id_table,
|
||||
};
|
||||
module_i2c_driver(st_accel_driver);
|
||||
|
||||
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
|
||||
MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
|
||||
MODULE_LICENSE("GPL v2");
|
86
drivers/iio/accel/st_accel_spi.c
Normal file
86
drivers/iio/accel/st_accel_spi.c
Normal file
|
@ -0,0 +1,86 @@
|
|||
/*
|
||||
* STMicroelectronics accelerometers driver
|
||||
*
|
||||
* Copyright 2012-2013 STMicroelectronics Inc.
|
||||
*
|
||||
* Denis Ciocca <denis.ciocca@st.com>
|
||||
*
|
||||
* Licensed under the GPL-2.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/iio/iio.h>
|
||||
#include <linux/iio/trigger.h>
|
||||
|
||||
#include <linux/iio/common/st_sensors.h>
|
||||
#include <linux/iio/common/st_sensors_spi.h>
|
||||
#include "st_accel.h"
|
||||
|
||||
static int st_accel_spi_probe(struct spi_device *spi)
|
||||
{
|
||||
struct iio_dev *indio_dev;
|
||||
struct st_sensor_data *adata;
|
||||
int err;
|
||||
|
||||
indio_dev = iio_device_alloc(sizeof(*adata));
|
||||
if (indio_dev == NULL) {
|
||||
err = -ENOMEM;
|
||||
goto iio_device_alloc_error;
|
||||
}
|
||||
|
||||
adata = iio_priv(indio_dev);
|
||||
adata->dev = &spi->dev;
|
||||
|
||||
st_sensors_spi_configure(indio_dev, spi, adata);
|
||||
|
||||
err = st_accel_common_probe(indio_dev);
|
||||
if (err < 0)
|
||||
goto st_accel_common_probe_error;
|
||||
|
||||
return 0;
|
||||
|
||||
st_accel_common_probe_error:
|
||||
iio_device_free(indio_dev);
|
||||
iio_device_alloc_error:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int st_accel_spi_remove(struct spi_device *spi)
|
||||
{
|
||||
st_accel_common_remove(spi_get_drvdata(spi));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct spi_device_id st_accel_id_table[] = {
|
||||
{ LSM303DLH_ACCEL_DEV_NAME },
|
||||
{ LSM303DLHC_ACCEL_DEV_NAME },
|
||||
{ LIS3DH_ACCEL_DEV_NAME },
|
||||
{ LSM330D_ACCEL_DEV_NAME },
|
||||
{ LSM330DL_ACCEL_DEV_NAME },
|
||||
{ LSM330DLC_ACCEL_DEV_NAME },
|
||||
{ LIS331DLH_ACCEL_DEV_NAME },
|
||||
{ LSM303DL_ACCEL_DEV_NAME },
|
||||
{ LSM303DLM_ACCEL_DEV_NAME },
|
||||
{ LSM330_ACCEL_DEV_NAME },
|
||||
{},
|
||||
};
|
||||
MODULE_DEVICE_TABLE(spi, st_accel_id_table);
|
||||
|
||||
static struct spi_driver st_accel_driver = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "st-accel-spi",
|
||||
},
|
||||
.probe = st_accel_spi_probe,
|
||||
.remove = st_accel_spi_remove,
|
||||
.id_table = st_accel_id_table,
|
||||
};
|
||||
module_spi_driver(st_accel_driver);
|
||||
|
||||
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
|
||||
MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
|
||||
MODULE_LICENSE("GPL v2");
|
Loading…
Reference in a new issue