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iio: pressure: st: Add support for new LPS001WP pressure sensor 

Here we use existing practices to introduce support for another
pressure/temperature sensor, the LPS001WP.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lee Jones 2013-09-16 17:02:00 +01:00 committed by Jonathan Cameron
parent a6cc5b250c
commit 7885a8ce68
3 changed files with 86 additions and 0 deletions
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1
drivers/iio/pressure/st_pressure.h
View File

@ -14,6 +14,7 @@
#include <linux/types.h>
#include <linux/iio/common/st_sensors.h>
#define LPS001WP_PRESS_DEV_NAME "lps001wp"
#define LPS331AP_PRESS_DEV_NAME "lps331ap"
/**

84
drivers/iio/pressure/st_pressure_core.c
View File

@ -64,6 +64,21 @@
#define ST_PRESS_LPS331AP_OUT_XL_ADDR 0x28
#define ST_TEMP_LPS331AP_OUT_L_ADDR 0x2b
/* CUSTOM VALUES FOR LPS001WP SENSOR */
#define ST_PRESS_LPS001WP_WAI_EXP 0xba
#define ST_PRESS_LPS001WP_ODR_ADDR 0x20
#define ST_PRESS_LPS001WP_ODR_MASK 0x30
#define ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL 0x01
#define ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL 0x02
#define ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL 0x03
#define ST_PRESS_LPS001WP_PW_ADDR 0x20
#define ST_PRESS_LPS001WP_PW_MASK 0x40
#define ST_PRESS_LPS001WP_BDU_ADDR 0x20
#define ST_PRESS_LPS001WP_BDU_MASK 0x04
#define ST_PRESS_LPS001WP_MULTIREAD_BIT true
#define ST_PRESS_LPS001WP_OUT_L_ADDR 0x28
#define ST_TEMP_LPS001WP_OUT_L_ADDR 0x2a
static const struct iio_chan_spec st_press_lps331ap_channels[] = {
{
.type = IIO_PRESSURE,
@ -100,6 +115,40 @@ static const struct iio_chan_spec st_press_lps331ap_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(1)
};
static const struct iio_chan_spec st_press_lps001wp_channels[] = {
{
.type = IIO_PRESSURE,
.channel2 = IIO_NO_MOD,
.address = ST_PRESS_LPS001WP_OUT_L_ADDR,
.scan_index = ST_SENSORS_SCAN_X,
.scan_type = {
.sign = 'u',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
},
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
.modified = 0,
},
{
.type = IIO_TEMP,
.channel2 = IIO_NO_MOD,
.address = ST_TEMP_LPS001WP_OUT_L_ADDR,
.scan_index = -1,
.scan_type = {
.sign = 'u',
.realbits = 16,
.storagebits = 16,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_OFFSET),
.modified = 0,
},
IIO_CHAN_SOFT_TIMESTAMP(1)
};
static const struct st_sensors st_press_sensors[] = {
{
.wai = ST_PRESS_LPS331AP_WAI_EXP,
@ -148,6 +197,41 @@ static const struct st_sensors st_press_sensors[] = {
.multi_read_bit = ST_PRESS_LPS331AP_MULTIREAD_BIT,
.bootime = 2,
},
{
.wai = ST_PRESS_LPS001WP_WAI_EXP,
.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 = ST_PRESS_LPS001WP_ODR_ADDR,
.mask = ST_PRESS_LPS001WP_ODR_MASK,
.odr_avl = {
{ 1, ST_PRESS_LPS001WP_ODR_AVL_1HZ_VAL, },
{ 7, ST_PRESS_LPS001WP_ODR_AVL_7HZ_VAL, },
{ 13, ST_PRESS_LPS001WP_ODR_AVL_13HZ_VAL, },
},
},
.pw = {
.addr = ST_PRESS_LPS001WP_PW_ADDR,
.mask = ST_PRESS_LPS001WP_PW_MASK,
.value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
},
.fs = {
.addr = 0,
},
.bdu = {
.addr = ST_PRESS_LPS001WP_BDU_ADDR,
.mask = ST_PRESS_LPS001WP_BDU_MASK,
},
.drdy_irq = {
.addr = 0,
},
.multi_read_bit = ST_PRESS_LPS001WP_MULTIREAD_BIT,
.bootime = 2,
},
};
static int st_press_read_raw(struct iio_dev *indio_dev,

1
drivers/iio/pressure/st_pressure_i2c.c
View File

@ -49,6 +49,7 @@ static int st_press_i2c_remove(struct i2c_client *client)
}
static const struct i2c_device_id st_press_id_table[] = {
{ LPS001WP_PRESS_DEV_NAME },
{ LPS331AP_PRESS_DEV_NAME },
{},
};