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:
Denis Ciocca 2013-01-25 23:44:00 +00:00 committed by Jonathan Cameron
parent 23491b513b
commit d62511689d
7 changed files with 868 additions and 0 deletions

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@ -21,4 +21,35 @@ config KXSD9
Say yes here to build support for the Kionix KXSD9 accelerometer.
Currently this only supports the device via an SPI interface.
config IIO_ST_ACCEL_3AXIS
tristate "STMicroelectronics accelerometers 3-Axis Driver"
depends on (I2C || SPI_MASTER) && SYSFS
select IIO_ST_SENSORS_CORE
select IIO_ST_ACCEL_I2C_3AXIS if (I2C)
select IIO_ST_ACCEL_SPI_3AXIS if (SPI_MASTER)
select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
select IIO_ST_ACCEL_BUFFER if (IIO_TRIGGERED_BUFFER)
help
Say yes here to build support for STMicroelectronics accelerometers:
LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
LIS331DLH, LSM303DL, LSM303DLM, LSM330.
This driver can also be built as a module. If so, will be created
these modules:
- st_accel (core functions for the driver [it is mandatory]);
- st_accel_i2c (necessary for the I2C devices [optional*]);
- st_accel_spi (necessary for the SPI devices [optional*]);
(*) one of these is necessary to do something.
config IIO_ST_ACCEL_I2C_3AXIS
tristate
depends on IIO_ST_ACCEL_3AXIS
depends on IIO_ST_SENSORS_I2C
config IIO_ST_ACCEL_SPI_3AXIS
tristate
depends on IIO_ST_ACCEL_3AXIS
depends on IIO_ST_SENSORS_SPI
endmenu

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@ -3,4 +3,12 @@
#
obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
obj-$(CONFIG_IIO_ST_ACCEL_3AXIS) += st_accel.o
st_accel-y := st_accel_core.o
st_accel-$(CONFIG_IIO_BUFFER) += st_accel_buffer.o
obj-$(CONFIG_IIO_ST_ACCEL_I2C_3AXIS) += st_accel_i2c.o
obj-$(CONFIG_IIO_ST_ACCEL_SPI_3AXIS) += st_accel_spi.o
obj-$(CONFIG_KXSD9) += kxsd9.o

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@ -0,0 +1,47 @@
/*
* STMicroelectronics accelerometers driver
*
* Copyright 2012-2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
* v. 1.0.0
* Licensed under the GPL-2.
*/
#ifndef ST_ACCEL_H
#define ST_ACCEL_H
#include <linux/types.h>
#include <linux/iio/common/st_sensors.h>
#define LSM303DLHC_ACCEL_DEV_NAME "lsm303dlhc_accel"
#define LIS3DH_ACCEL_DEV_NAME "lis3dh"
#define LSM330D_ACCEL_DEV_NAME "lsm330d_accel"
#define LSM330DL_ACCEL_DEV_NAME "lsm330dl_accel"
#define LSM330DLC_ACCEL_DEV_NAME "lsm330dlc_accel"
#define LIS331DLH_ACCEL_DEV_NAME "lis331dlh"
#define LSM303DL_ACCEL_DEV_NAME "lsm303dl_accel"
#define LSM303DLH_ACCEL_DEV_NAME "lsm303dlh_accel"
#define LSM303DLM_ACCEL_DEV_NAME "lsm303dlm_accel"
#define LSM330_ACCEL_DEV_NAME "lsm330_accel"
int st_accel_common_probe(struct iio_dev *indio_dev);
void st_accel_common_remove(struct iio_dev *indio_dev);
#ifdef CONFIG_IIO_BUFFER
int st_accel_allocate_ring(struct iio_dev *indio_dev);
void st_accel_deallocate_ring(struct iio_dev *indio_dev);
int st_accel_trig_set_state(struct iio_trigger *trig, bool state);
#define ST_ACCEL_TRIGGER_SET_STATE (&st_accel_trig_set_state)
#else /* CONFIG_IIO_BUFFER */
static inline int st_accel_allocate_ring(struct iio_dev *indio_dev)
{
return 0;
}
static inline void st_accel_deallocate_ring(struct iio_dev *indio_dev)
{
}
#define ST_ACCEL_TRIGGER_SET_STATE NULL
#endif /* CONFIG_IIO_BUFFER */
#endif /* ST_ACCEL_H */

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@ -0,0 +1,114 @@
/*
* STMicroelectronics accelerometers driver
*
* Copyright 2012-2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
*
* Licensed under the GPL-2.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/common/st_sensors.h>
#include "st_accel.h"
int st_accel_trig_set_state(struct iio_trigger *trig, bool state)
{
struct iio_dev *indio_dev = trig->private_data;
return st_sensors_set_dataready_irq(indio_dev, state);
}
static int st_accel_buffer_preenable(struct iio_dev *indio_dev)
{
int err;
err = st_sensors_set_enable(indio_dev, true);
if (err < 0)
goto st_accel_set_enable_error;
err = iio_sw_buffer_preenable(indio_dev);
st_accel_set_enable_error:
return err;
}
static int st_accel_buffer_postenable(struct iio_dev *indio_dev)
{
int err;
struct st_sensor_data *adata = iio_priv(indio_dev);
adata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
if (adata->buffer_data == NULL) {
err = -ENOMEM;
goto allocate_memory_error;
}
err = st_sensors_set_axis_enable(indio_dev,
(u8)indio_dev->active_scan_mask[0]);
if (err < 0)
goto st_accel_buffer_postenable_error;
err = iio_triggered_buffer_postenable(indio_dev);
if (err < 0)
goto st_accel_buffer_postenable_error;
return err;
st_accel_buffer_postenable_error:
kfree(adata->buffer_data);
allocate_memory_error:
return err;
}
static int st_accel_buffer_predisable(struct iio_dev *indio_dev)
{
int err;
struct st_sensor_data *adata = iio_priv(indio_dev);
err = iio_triggered_buffer_predisable(indio_dev);
if (err < 0)
goto st_accel_buffer_predisable_error;
err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
if (err < 0)
goto st_accel_buffer_predisable_error;
err = st_sensors_set_enable(indio_dev, false);
st_accel_buffer_predisable_error:
kfree(adata->buffer_data);
return err;
}
static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = {
.preenable = &st_accel_buffer_preenable,
.postenable = &st_accel_buffer_postenable,
.predisable = &st_accel_buffer_predisable,
};
int st_accel_allocate_ring(struct iio_dev *indio_dev)
{
return iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
&st_sensors_trigger_handler, &st_accel_buffer_setup_ops);
}
void st_accel_deallocate_ring(struct iio_dev *indio_dev)
{
iio_triggered_buffer_cleanup(indio_dev);
}
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics accelerometers buffer");
MODULE_LICENSE("GPL v2");

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@ -0,0 +1,495 @@
/*
* 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/errno.h>
#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/buffer.h>
#include <linux/iio/common/st_sensors.h>
#include "st_accel.h"
/* DEFAULT VALUE FOR SENSORS */
#define ST_ACCEL_DEFAULT_OUT_X_L_ADDR 0x28
#define ST_ACCEL_DEFAULT_OUT_Y_L_ADDR 0x2a
#define ST_ACCEL_DEFAULT_OUT_Z_L_ADDR 0x2c
/* FULLSCALE */
#define ST_ACCEL_FS_AVL_2G 2
#define ST_ACCEL_FS_AVL_4G 4
#define ST_ACCEL_FS_AVL_6G 6
#define ST_ACCEL_FS_AVL_8G 8
#define ST_ACCEL_FS_AVL_16G 16
/* CUSTOM VALUES FOR SENSOR 1 */
#define ST_ACCEL_1_WAI_EXP 0x33
#define ST_ACCEL_1_ODR_ADDR 0x20
#define ST_ACCEL_1_ODR_MASK 0xf0
#define ST_ACCEL_1_ODR_AVL_1HZ_VAL 0x01
#define ST_ACCEL_1_ODR_AVL_10HZ_VAL 0x02
#define ST_ACCEL_1_ODR_AVL_25HZ_VAL 0x03
#define ST_ACCEL_1_ODR_AVL_50HZ_VAL 0x04
#define ST_ACCEL_1_ODR_AVL_100HZ_VAL 0x05
#define ST_ACCEL_1_ODR_AVL_200HZ_VAL 0x06
#define ST_ACCEL_1_ODR_AVL_400HZ_VAL 0x07
#define ST_ACCEL_1_ODR_AVL_1600HZ_VAL 0x08
#define ST_ACCEL_1_FS_ADDR 0x23
#define ST_ACCEL_1_FS_MASK 0x30
#define ST_ACCEL_1_FS_AVL_2_VAL 0x00
#define ST_ACCEL_1_FS_AVL_4_VAL 0x01
#define ST_ACCEL_1_FS_AVL_8_VAL 0x02
#define ST_ACCEL_1_FS_AVL_16_VAL 0x03
#define ST_ACCEL_1_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
#define ST_ACCEL_1_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
#define ST_ACCEL_1_FS_AVL_8_GAIN IIO_G_TO_M_S_2(4000)
#define ST_ACCEL_1_FS_AVL_16_GAIN IIO_G_TO_M_S_2(12000)
#define ST_ACCEL_1_BDU_ADDR 0x23
#define ST_ACCEL_1_BDU_MASK 0x80
#define ST_ACCEL_1_DRDY_IRQ_ADDR 0x22
#define ST_ACCEL_1_DRDY_IRQ_MASK 0x10
#define ST_ACCEL_1_MULTIREAD_BIT true
/* CUSTOM VALUES FOR SENSOR 2 */
#define ST_ACCEL_2_WAI_EXP 0x32
#define ST_ACCEL_2_ODR_ADDR 0x20
#define ST_ACCEL_2_ODR_MASK 0x18
#define ST_ACCEL_2_ODR_AVL_50HZ_VAL 0x00
#define ST_ACCEL_2_ODR_AVL_100HZ_VAL 0x01
#define ST_ACCEL_2_ODR_AVL_400HZ_VAL 0x02
#define ST_ACCEL_2_ODR_AVL_1000HZ_VAL 0x03
#define ST_ACCEL_2_PW_ADDR 0x20
#define ST_ACCEL_2_PW_MASK 0xe0
#define ST_ACCEL_2_FS_ADDR 0x23
#define ST_ACCEL_2_FS_MASK 0x30
#define ST_ACCEL_2_FS_AVL_2_VAL 0X00
#define ST_ACCEL_2_FS_AVL_4_VAL 0X01
#define ST_ACCEL_2_FS_AVL_8_VAL 0x03
#define ST_ACCEL_2_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
#define ST_ACCEL_2_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
#define ST_ACCEL_2_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900)
#define ST_ACCEL_2_BDU_ADDR 0x23
#define ST_ACCEL_2_BDU_MASK 0x80
#define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22
#define ST_ACCEL_2_DRDY_IRQ_MASK 0x02
#define ST_ACCEL_2_MULTIREAD_BIT true
/* CUSTOM VALUES FOR SENSOR 3 */
#define ST_ACCEL_3_WAI_EXP 0x40
#define ST_ACCEL_3_ODR_ADDR 0x20
#define ST_ACCEL_3_ODR_MASK 0xf0
#define ST_ACCEL_3_ODR_AVL_3HZ_VAL 0x01
#define ST_ACCEL_3_ODR_AVL_6HZ_VAL 0x02
#define ST_ACCEL_3_ODR_AVL_12HZ_VAL 0x03
#define ST_ACCEL_3_ODR_AVL_25HZ_VAL 0x04
#define ST_ACCEL_3_ODR_AVL_50HZ_VAL 0x05
#define ST_ACCEL_3_ODR_AVL_100HZ_VAL 0x06
#define ST_ACCEL_3_ODR_AVL_200HZ_VAL 0x07
#define ST_ACCEL_3_ODR_AVL_400HZ_VAL 0x08
#define ST_ACCEL_3_ODR_AVL_800HZ_VAL 0x09
#define ST_ACCEL_3_ODR_AVL_1600HZ_VAL 0x0a
#define ST_ACCEL_3_FS_ADDR 0x24
#define ST_ACCEL_3_FS_MASK 0x38
#define ST_ACCEL_3_FS_AVL_2_VAL 0X00
#define ST_ACCEL_3_FS_AVL_4_VAL 0X01
#define ST_ACCEL_3_FS_AVL_6_VAL 0x02
#define ST_ACCEL_3_FS_AVL_8_VAL 0x03
#define ST_ACCEL_3_FS_AVL_16_VAL 0x04
#define ST_ACCEL_3_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61)
#define ST_ACCEL_3_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122)
#define ST_ACCEL_3_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183)
#define ST_ACCEL_3_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244)
#define ST_ACCEL_3_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732)
#define ST_ACCEL_3_BDU_ADDR 0x20
#define ST_ACCEL_3_BDU_MASK 0x08
#define ST_ACCEL_3_DRDY_IRQ_ADDR 0x23
#define ST_ACCEL_3_DRDY_IRQ_MASK 0x80
#define ST_ACCEL_3_IG1_EN_ADDR 0x23
#define ST_ACCEL_3_IG1_EN_MASK 0x08
#define ST_ACCEL_3_MULTIREAD_BIT false
static const struct iio_chan_spec st_accel_12bit_channels[] = {
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
ST_SENSORS_DEFAULT_12_REALBITS, ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
ST_SENSORS_DEFAULT_12_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_12_REALBITS, ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
IIO_CHAN_SOFT_TIMESTAMP(3)
};
static const struct iio_chan_spec st_accel_16bit_channels[] = {
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_X, IIO_MOD_X, IIO_LE,
ST_SENSORS_DEFAULT_16_REALBITS, ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL, ST_SENSORS_SCAN_Y, IIO_MOD_Y, IIO_LE,
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");

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@ -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");

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@ -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");