diff options
author | mario tesi <mario.tesi@st.com> | 2019-01-14 20:24:20 +0300 |
---|---|---|
committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-01-19 20:32:41 +0300 |
commit | e5aab7b0d88db2dbae0ad0dedeba22599576cd22 (patch) | |
tree | 625d4218b8570a51651902c1a2cd38d91f0fde77 /drivers/iio/pressure/st_pressure_core.c | |
parent | f6ff49b8a3b6f774777a21a5a0725d98dee5f2d1 (diff) | |
download | linux-e5aab7b0d88db2dbae0ad0dedeba22599576cd22.tar.xz |
iio:st_pressure:initial lps22hh sensor support
Initial support for ST LPS22HH pressure sensor. Datasheet:
http://www2.st.com/resource/en/datasheet/lps22hh.pdf
Features:
* pressure, temperature data and timestamping channels
* sampling frequency selection [1..200] Hz
* interrupt based trigger
* over I2C or SPI interface
Signed-off-by: mario tesi <mario.tesi@st.com>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/pressure/st_pressure_core.c')
-rw-r--r-- | drivers/iio/pressure/st_pressure_core.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c index 4ddb6cf7d401..38dcdb7c000e 100644 --- a/drivers/iio/pressure/st_pressure_core.c +++ b/drivers/iio/pressure/st_pressure_core.c @@ -492,6 +492,75 @@ static const struct st_sensor_settings st_press_sensors_settings[] = { .multi_read_bit = false, .bootime = 2, }, + { + /* + * CUSTOM VALUES FOR LPS22HH SENSOR + * See LPS22HH datasheet: + * http://www2.st.com/resource/en/datasheet/lps22hh.pdf + */ + .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 = { + /* + * Pressure and temperature sensitivity values + * as defined in table 3 of LPS22HH datasheet. + */ + [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, + }, }; static int st_press_write_raw(struct iio_dev *indio_dev, |