[PATCH 28/38] iio: pressure: st: Add support for new LPS001WP pressure sensor

Lee Jones
2013-09-10T12:49:29Z

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

Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
drivers/iio/pressure/st_pressure.h | 1 +
drivers/iio/pressure/st_pressure_core.c | 84 +++++++++++++++++++++++++++++++++
drivers/iio/pressure/st_pressure_i2c.c | 1 +
3 files changed, 86 insertions(+)

diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index f1bebce..36b1cc6 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -15,6 +15,7 @@
#include <linux/iio/common/st_sensors.h>

#define LPS331AP_PRESS_DEV_NAME "lps331ap_press"
+#define LPS001WP_PRESS_DEV_NAME "lps001wp_press"

/**
* struct st_sensors_platform_data - default press platform data
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index 34b3fb1..b42614a 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -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,
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index 08aac5e..ada5cbd 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -50,6 +50,7 @@ static int st_press_i2c_remove(struct i2c_client *client)

static const struct i2c_device_id st_press_id_table[] = {
{ LPS331AP_PRESS_DEV_NAME },
+ { LPS001WP_PRESS_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(i2c, st_press_id_table);
--
1.8.1.2