#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger.h>
#include <asm/unaligned.h>
#include <linux/iio/common/st_sensors.h>
#include "st_pressure.h"
#define MCELSIUS_PER_CELSIUS 1000
#define ST_PRESS_LSB_PER_MBAR 4096UL
#define ST_PRESS_KPASCAL_NANO_SCALE (100000000UL / \
ST_PRESS_LSB_PER_MBAR)
#define ST_PRESS_LSB_PER_CELSIUS 480UL
#define ST_PRESS_MILLI_CELSIUS_OFFSET 42500UL
#define ST_PRESS_FS_AVL_1100MB 1100
#define ST_PRESS_FS_AVL_1260MB 1260
#define ST_PRESS_1_OUT_XL_ADDR 0x28
#define ST_TEMP_1_OUT_L_ADDR 0x2b
#define ST_PRESS_LPS001WP_LSB_PER_MBAR 16UL
#define ST_PRESS_LPS001WP_LSB_PER_CELSIUS 64UL
#define ST_PRESS_LPS001WP_FS_AVL_PRESS_GAIN \
(100000000UL / ST_PRESS_LPS001WP_LSB_PER_MBAR)
#define ST_PRESS_LPS001WP_OUT_L_ADDR 0x28
#define ST_TEMP_LPS001WP_OUT_L_ADDR 0x2a
#define ST_PRESS_LPS25H_OUT_XL_ADDR 0x28
#define ST_TEMP_LPS25H_OUT_L_ADDR 0x2b
#define ST_PRESS_LPS22HB_LSB_PER_CELSIUS 100UL
static const struct iio_chan_spec st_press_1_channels[] = {
{
.type = IIO_PRESSURE,
.address = ST_PRESS_1_OUT_XL_ADDR,
.scan_index = 0,
.scan_type = {
.sign = 's',
.realbits = 24,
.storagebits = 32,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
},
{
.type = IIO_TEMP,
.address = ST_TEMP_1_OUT_L_ADDR,
.scan_index = 1,
.scan_type = {
.sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
},
IIO_CHAN_SOFT_TIMESTAMP(2)
};
static const struct iio_chan_spec st_press_lps001wp_channels[] = {
{
.type = IIO_PRESSURE,
.address = ST_PRESS_LPS001WP_OUT_L_ADDR,
.scan_index = 0,
.scan_type = {
.sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
},
{
.type = IIO_TEMP,
.address = ST_TEMP_LPS001WP_OUT_L_ADDR,
.scan_index = 1,
.scan_type = {
.sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
},
IIO_CHAN_SOFT_TIMESTAMP(2)
};
static const struct iio_chan_spec st_press_lps22hb_channels[] = {
{
.type = IIO_PRESSURE,
.address = ST_PRESS_1_OUT_XL_ADDR,
.scan_index = 0,
.scan_type = {
.sign = 's',
.realbits = 24,
.storagebits = 32,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
},
{
.type = IIO_TEMP,
.address = ST_TEMP_1_OUT_L_ADDR,
.scan_index = 1,
.scan_type = {
.sign = 's',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
},
IIO_CHAN_SOFT_TIMESTAMP(2)
};
static const struct st_sensor_settings st_press_sensors_settings[] = {
{
.wai = 0xbb,
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS331AP_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_1_channels,
.num_ch = ARRAY_SIZE(st_press_1_channels),
.odr = {
.addr = 0x20,
.mask = 0x70,
.odr_avl = {
{ .hz = 1, .value = 0x01 },
{ .hz = 7, .value = 0x05 },
{ .hz = 13, .value = 0x06 },
{ .hz = 25, .value = 0x07 },
},
},
.pw = {
.addr = 0x20,
.mask = 0x80,
.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.addr = 0x23,
.mask = 0x30,
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
.gain = ST_PRESS_KPASCAL_NANO_SCALE,
.gain2 = ST_PRESS_LSB_PER_CELSIUS,
},
},
},
.bdu = {
.addr = 0x20,
.mask = 0x04,
},
.drdy_irq = {
.int1 = {
.addr = 0x22,
.mask = 0x04,
.addr_od = 0x22,
.mask_od = 0x40,
},
.int2 = {
.addr = 0x22,
.mask = 0x20,
.addr_od = 0x22,
.mask_od = 0x40,
},
.addr_ihl = 0x22,
.mask_ihl = 0x80,
.stat_drdy = {
.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
.mask = 0x03,
},
},
.sim = {
.addr = 0x20,
.value = BIT(0),
},
.multi_read_bit = true,
.bootime = 2,
},
{
.wai = 0xba,
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS001WP_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_lps001wp_channels,
.num_ch = ARRAY_SIZE(st_press_lps001wp_channels),
.odr = {
.addr = 0x20,
.mask = 0x30,
.odr_avl = {
{ .hz = 1, .value = 0x01 },
{ .hz = 7, .value = 0x02 },
{ .hz = 13, .value = 0x03 },
},
},
.pw = {
.addr = 0x20,
.mask = 0x40,
.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1100MB,
.gain = ST_PRESS_LPS001WP_FS_AVL_PRESS_GAIN,
.gain2 = ST_PRESS_LPS001WP_LSB_PER_CELSIUS,
},
},
},
.bdu = {
.addr = 0x20,
.mask = 0x04,
},
.sim = {
.addr = 0x20,
.value = BIT(0),
},
.multi_read_bit = true,
.bootime = 2,
},
{
.wai = 0xbd,
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS25H_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_1_channels,
.num_ch = ARRAY_SIZE(st_press_1_channels),
.odr = {
.addr = 0x20,
.mask = 0x70,
.odr_avl = {
{ .hz = 1, .value = 0x01 },
{ .hz = 7, .value = 0x02 },
{ .hz = 13, .value = 0x03 },
{ .hz = 25, .value = 0x04 },
},
},
.pw = {
.addr = 0x20,
.mask = 0x80,
.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
.gain = ST_PRESS_KPASCAL_NANO_SCALE,
.gain2 = ST_PRESS_LSB_PER_CELSIUS,
},
},
},
.bdu = {
.addr = 0x20,
.mask = 0x04,
},
.drdy_irq = {
.int1 = {
.addr = 0x23,
.mask = 0x01,
.addr_od = 0x22,
.mask_od = 0x40,
},
.addr_ihl = 0x22,
.mask_ihl = 0x80,
.stat_drdy = {
.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
.mask = 0x03,
},
},
.sim = {
.addr = 0x20,
.value = BIT(0),
},
.multi_read_bit = true,
.bootime = 2,
},
{
.wai = 0xb1,
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS22HB_PRESS_DEV_NAME,
[1] = LPS33HW_PRESS_DEV_NAME,
[2] = LPS35HW_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
.num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
.odr = {
.addr = 0x10,
.mask = 0x70,
.odr_avl = {
{ .hz = 1, .value = 0x01 },
{ .hz = 10, .value = 0x02 },
{ .hz = 25, .value = 0x03 },
{ .hz = 50, .value = 0x04 },
{ .hz = 75, .value = 0x05 },
},
},
.pw = {
.addr = 0x10,
.mask = 0x70,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
.gain = ST_PRESS_KPASCAL_NANO_SCALE,
.gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
},
},
},
.bdu = {
.addr = 0x10,
.mask = 0x02,
},
.drdy_irq = {
.int1 = {
.addr = 0x12,
.mask = 0x04,
.addr_od = 0x12,
.mask_od = 0x40,
},
.addr_ihl = 0x12,
.mask_ihl = 0x80,
.stat_drdy = {
.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
.mask = 0x03,
},
},
.sim = {
.addr = 0x10,
.value = BIT(0),
},
.multi_read_bit = false,
.bootime = 2,
},
{
.wai = 0xb3,
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS22HH_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
.num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
.odr = {
.addr = 0x10,
.mask = 0x70,
.odr_avl = {
{ .hz = 1, .value = 0x01 },
{ .hz = 10, .value = 0x02 },
{ .hz = 25, .value = 0x03 },
{ .hz = 50, .value = 0x04 },
{ .hz = 75, .value = 0x05 },
{ .hz = 100, .value = 0x06 },
{ .hz = 200, .value = 0x07 },
},
},
.pw = {
.addr = 0x10,
.mask = 0x70,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
.gain = ST_PRESS_KPASCAL_NANO_SCALE,
.gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
},
},
},
.bdu = {
.addr = 0x10,
.mask = BIT(1),
},
.drdy_irq = {
.int1 = {
.addr = 0x12,
.mask = BIT(2),
.addr_od = 0x11,
.mask_od = BIT(5),
},
.addr_ihl = 0x11,
.mask_ihl = BIT(6),
.stat_drdy = {
.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
.mask = 0x03,
},
},
.sim = {
.addr = 0x10,
.value = BIT(0),
},
.multi_read_bit = false,
.bootime = 2,
},
{
.wai = 0xb4,
.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
.sensors_supported = {
[0] = LPS22DF_PRESS_DEV_NAME,
},
.ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
.num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
.odr = {
.addr = 0x10,
.mask = 0x78,
.odr_avl = {
{ .hz = 1, .value = 0x01 },
{ .hz = 4, .value = 0x02 },
{ .hz = 10, .value = 0x03 },
{ .hz = 25, .value = 0x04 },
{ .hz = 50, .value = 0x05 },
{ .hz = 75, .value = 0x06 },
{ .hz = 100, .value = 0x07 },
{ .hz = 200, .value = 0x08 },
},
},
.pw = {
.addr = 0x10,
.mask = 0x78,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.fs_avl = {
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
.gain = ST_PRESS_KPASCAL_NANO_SCALE,
.gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
},
},
},
.bdu = {
.addr = 0x11,
.mask = BIT(3),
},
.drdy_irq = {
.int1 = {
.addr = 0x13,
.mask = BIT(5),
.addr_od = 0x12,
.mask_od = BIT(1),
},
.addr_ihl = 0x12,
.mask_ihl = BIT(3),
.stat_drdy = {
.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
.mask = 0x03,
},
},
.sim = {
.addr = 0x0E,
.value = BIT(5),
},
.multi_read_bit = false,
.bootime = 2,
},
};
static int st_press_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *ch,
int val,
int val2,
long mask)
{
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
if (val2)
return -EINVAL;
return st_sensors_set_odr(indio_dev, val);
default:
return -EINVAL;
}
}
static int st_press_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 *press_data = 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:
switch (ch->type) {
case IIO_PRESSURE:
*val = 0;
*val2 = press_data->current_fullscale->gain;
return IIO_VAL_INT_PLUS_NANO;
case IIO_TEMP:
*val = MCELSIUS_PER_CELSIUS;
*val2 = press_data->current_fullscale->gain2;
return IIO_VAL_FRACTIONAL;
default:
err = -EINVAL;
goto read_error;
}
case IIO_CHAN_INFO_OFFSET:
switch (ch->type) {
case IIO_TEMP:
*val = ST_PRESS_MILLI_CELSIUS_OFFSET *
press_data->current_fullscale->gain2;
*val2 = MCELSIUS_PER_CELSIUS;
break;
default:
err = -EINVAL;
goto read_error;
}
return IIO_VAL_FRACTIONAL;
case IIO_CHAN_INFO_SAMP_FREQ:
*val = press_data->odr;
return IIO_VAL_INT;
default:
return -EINVAL;
}
read_error:
return err;
}
static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
static struct attribute *st_press_attributes[] = {
&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
NULL,
};
static const struct attribute_group st_press_attribute_group = {
.attrs = st_press_attributes,
};
static const struct iio_info press_info = {
.attrs = &st_press_attribute_group,
.read_raw = &st_press_read_raw,
.write_raw = &st_press_write_raw,
.debugfs_reg_access = &st_sensors_debugfs_reg_access,
};
#ifdef CONFIG_IIO_TRIGGER
static const struct iio_trigger_ops st_press_trigger_ops = {
.set_trigger_state = ST_PRESS_TRIGGER_SET_STATE,
.validate_device = st_sensors_validate_device,
};
#define ST_PRESS_TRIGGER_OPS (&st_press_trigger_ops)
#else
#define ST_PRESS_TRIGGER_OPS NULL
#endif
const struct st_sensor_settings *st_press_get_settings(const char *name)
{
int index = st_sensors_get_settings_index(name,
st_press_sensors_settings,
ARRAY_SIZE(st_press_sensors_settings));
if (index < 0)
return NULL;
return &st_press_sensors_settings[index];
}
EXPORT_SYMBOL_NS(st_press_get_settings, IIO_ST_SENSORS);
int st_press_common_probe(struct iio_dev *indio_dev)
{
struct st_sensor_data *press_data = iio_priv(indio_dev);
struct device *parent = indio_dev->dev.parent;
struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
int err;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &press_info;
err = st_sensors_verify_id(indio_dev);
if (err < 0)
return err;
press_data->num_data_channels = press_data->sensor_settings->num_ch - 1;
indio_dev->channels = press_data->sensor_settings->ch;
indio_dev->num_channels = press_data->sensor_settings->num_ch;
press_data->current_fullscale = &press_data->sensor_settings->fs.fs_avl[0];
press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz;
if (!pdata && (press_data->sensor_settings->drdy_irq.int1.addr ||
press_data->sensor_settings->drdy_irq.int2.addr))
pdata = (struct st_sensors_platform_data *)&default_press_pdata;
err = st_sensors_init_sensor(indio_dev, pdata);
if (err < 0)
return err;
err = st_press_allocate_ring(indio_dev);
if (err < 0)
return err;
if (press_data->irq > 0) {
err = st_sensors_allocate_trigger(indio_dev,
ST_PRESS_TRIGGER_OPS);
if (err < 0)
return err;
}
return devm_iio_device_register(parent, indio_dev);
}
EXPORT_SYMBOL_NS(st_press_common_probe, IIO_ST_SENSORS);
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics pressures driver");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS