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Date: Fri, 9 Sep 2022 17:16:10 +0100
From: Martyn Welch <martyn.welch@...labora.co.uk>
To: Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>
Cc: kernel@...labora.com, Martyn Welch <martyn.welch@...labora.co.uk>,
linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] iio: pressure: st_pressure: Add support for LPS22DF
Add support for ST LPS22DF pressure sensor.
Datasheet: https://www.st.com/resource/en/datasheet/lps22df.pdf
Signed-off-by: Martyn Welch <martyn.welch@...labora.co.uk>
---
drivers/iio/pressure/st_pressure.h | 2 +
drivers/iio/pressure/st_pressure_core.c | 70 +++++++++++++++++++++++++
drivers/iio/pressure/st_pressure_i2c.c | 5 ++
drivers/iio/pressure/st_pressure_spi.c | 5 ++
4 files changed, 82 insertions(+)
diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index 156e6a72dc5c..6e11bea784fa 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -22,6 +22,7 @@ enum st_press_type {
LPS33HW,
LPS35HW,
LPS22HH,
+ LPS22DF,
ST_PRESS_MAX,
};
@@ -32,6 +33,7 @@ enum st_press_type {
#define LPS33HW_PRESS_DEV_NAME "lps33hw"
#define LPS35HW_PRESS_DEV_NAME "lps35hw"
#define LPS22HH_PRESS_DEV_NAME "lps22hh"
+#define LPS22DF_PRESS_DEV_NAME "lps22df"
/**
* 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 76913a2028d2..80176e3083af 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -552,6 +552,76 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.multi_read_bit = false,
.bootime = 2,
},
+ {
+ /*
+ * CUSTOM VALUES FOR LPS22DF SENSOR
+ * See LPS22DF datasheet:
+ * http://www.st.com/resource/en/datasheet/lps22df.pdf
+ */
+ .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 = {
+ /*
+ * Pressure and temperature sensitivity values
+ * as defined in table 2 of LPS22DF datasheet.
+ */
+ [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,
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index 7035777fd988..58fede861891 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -47,6 +47,10 @@ static const struct of_device_id st_press_of_match[] = {
.compatible = "st,lps22hh",
.data = LPS22HH_PRESS_DEV_NAME,
},
+ {
+ .compatible = "st,lps22df",
+ .data = LPS22DF_PRESS_DEV_NAME,
+ },
{},
};
MODULE_DEVICE_TABLE(of, st_press_of_match);
@@ -67,6 +71,7 @@ static const struct i2c_device_id st_press_id_table[] = {
{ LPS33HW_PRESS_DEV_NAME, LPS33HW },
{ LPS35HW_PRESS_DEV_NAME, LPS35HW },
{ LPS22HH_PRESS_DEV_NAME, LPS22HH },
+ { LPS22DF_PRESS_DEV_NAME, LPS22DF },
{},
};
MODULE_DEVICE_TABLE(i2c, st_press_id_table);
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index bfab8e7fb061..25cca5ad7c55 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -51,6 +51,10 @@ static const struct of_device_id st_press_of_match[] = {
.compatible = "st,lps22hh",
.data = LPS22HH_PRESS_DEV_NAME,
},
+ {
+ .compatible = "st,lps22df",
+ .data = LPS22DF_PRESS_DEV_NAME,
+ },
{},
};
MODULE_DEVICE_TABLE(of, st_press_of_match);
@@ -97,6 +101,7 @@ static const struct spi_device_id st_press_id_table[] = {
{ LPS33HW_PRESS_DEV_NAME },
{ LPS35HW_PRESS_DEV_NAME },
{ LPS22HH_PRESS_DEV_NAME },
+ { LPS22DF_PRESS_DEV_NAME },
{ "lps001wp-press" },
{ "lps25h-press", },
{ "lps331ap-press" },
--
2.35.1
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