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iio: chemical: atlas-sensor: add RTD-SM module support

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Atlas Scientific RTD-SM OEM sensor reads temperature using
resistance temperature detector technology.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Matt Ranostay 2020-04-25 10:25:20 +03:00 committed by Jonathan Cameron
parent 1e8f99edc9
commit b101c93ca5
1 changed files with 29 additions and 0 deletions
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29
drivers/iio/chemical/atlas-sensor.c
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@ -53,6 +53,8 @@
#define ATLAS_REG_DO_CALIB_STATUS_PRESSURE BIT(0)
#define ATLAS_REG_DO_CALIB_STATUS_DO BIT(1)
#define ATLAS_REG_RTD_DATA 0x0e
#define ATLAS_REG_PH_TEMP_DATA 0x0e
#define ATLAS_REG_PH_DATA 0x16
@ -72,12 +74,14 @@
#define ATLAS_EC_INT_TIME_IN_MS 650
#define ATLAS_ORP_INT_TIME_IN_MS 450
#define ATLAS_DO_INT_TIME_IN_MS 450
#define ATLAS_RTD_INT_TIME_IN_MS 450
enum {
ATLAS_PH_SM,
ATLAS_EC_SM,
ATLAS_ORP_SM,
ATLAS_DO_SM,
ATLAS_RTD_SM,
};
struct atlas_data {
@ -206,6 +210,22 @@ static const struct iio_chan_spec atlas_do_channels[] = {
},
};
static const struct iio_chan_spec atlas_rtd_channels[] = {
{
.type = IIO_TEMP,
.address = ATLAS_REG_RTD_DATA,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
.scan_index = 0,
.scan_type = {
.sign = 's',
.realbits = 32,
.storagebits = 32,
.endianness = IIO_BE,
},
},
IIO_CHAN_SOFT_TIMESTAMP(1),
};
static int atlas_check_ph_calibration(struct atlas_data *data)
{
struct device *dev = &data->client->dev;
@ -350,6 +370,12 @@ static struct atlas_device atlas_devices[] = {
.calibration = &atlas_check_do_calibration,
.delay = ATLAS_DO_INT_TIME_IN_MS,
},
[ATLAS_RTD_SM] = {
.channels = atlas_rtd_channels,
.num_channels = 2,
.data_reg = ATLAS_REG_RTD_DATA,
.delay = ATLAS_RTD_INT_TIME_IN_MS,
},
};
static int atlas_set_powermode(struct atlas_data *data, int on)
@ -477,6 +503,7 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
struct atlas_data *data = iio_priv(indio_dev);
switch (mask) {
case IIO_CHAN_INFO_PROCESSED:
case IIO_CHAN_INFO_RAW: {
int ret;
__be32 reg;
@ -565,6 +592,7 @@ static const struct i2c_device_id atlas_id[] = {
{ "atlas-ec-sm", ATLAS_EC_SM},
{ "atlas-orp-sm", ATLAS_ORP_SM},
{ "atlas-do-sm", ATLAS_DO_SM},
{ "atlas-rtd-sm", ATLAS_RTD_SM},
{}
};
MODULE_DEVICE_TABLE(i2c, atlas_id);
@ -574,6 +602,7 @@ static const struct of_device_id atlas_dt_ids[] = {
{ .compatible = "atlas,ec-sm", .data = (void *)ATLAS_EC_SM, },
{ .compatible = "atlas,orp-sm", .data = (void *)ATLAS_ORP_SM, },
{ .compatible = "atlas,do-sm", .data = (void *)ATLAS_DO_SM, },
{ .compatible = "atlas,rtd-sm", .data = (void *)ATLAS_RTD_SM, },
{ }
};
MODULE_DEVICE_TABLE(of, atlas_dt_ids);