iio: chemical: atlas-ph-sensor: add ORP feature
Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Matt Ranostay
Jonathan Cameron
parent
d7c0e5ae70
commit
ce08cc986e
3 changed files with 75 additions and 1 deletions
|
|
@ -0,0 +1,22 @@
|
|||
* Atlas Scientific ORP-SM OEM sensor
|
||||
|
||||
https://www.atlas-scientific.com/_files/_datasheets/_oem/ORP_oem_datasheet.pdf
|
||||
|
||||
Required properties:
|
||||
|
||||
- compatible: must be "atlas,orp-sm"
|
||||
- reg: the I2C address of the sensor
|
||||
- interrupt-parent: should be the phandle for the interrupt controller
|
||||
- interrupts: the sole interrupt generated by the device
|
||||
|
||||
Refer to interrupt-controller/interrupts.txt for generic interrupt client
|
||||
node bindings.
|
||||
|
||||
Example:
|
||||
|
||||
atlas@66 {
|
||||
compatible = "atlas,orp-sm";
|
||||
reg = <0x66>;
|
||||
interrupt-parent = <&gpio1>;
|
||||
interrupts = <16 2>;
|
||||
};
|
||||
|
|
@ -16,6 +16,7 @@ config ATLAS_PH_SENSOR
|
|||
Atlas Scientific OEM SM sensors:
|
||||
* pH SM sensor
|
||||
* EC SM sensor
|
||||
* ORP SM sensor
|
||||
|
||||
To compile this driver as module, choose M here: the
|
||||
module will be called atlas-ph-sensor.
|
||||
|
|
|
|||
|
|
@ -66,12 +66,17 @@
|
|||
#define ATLAS_REG_TDS_DATA 0x1c
|
||||
#define ATLAS_REG_PSS_DATA 0x20
|
||||
|
||||
#define ATLAS_REG_ORP_CALIB_STATUS 0x0d
|
||||
#define ATLAS_REG_ORP_DATA 0x0e
|
||||
|
||||
#define ATLAS_PH_INT_TIME_IN_US 450000
|
||||
#define ATLAS_EC_INT_TIME_IN_US 650000
|
||||
#define ATLAS_ORP_INT_TIME_IN_US 450000
|
||||
|
||||
enum {
|
||||
ATLAS_PH_SM,
|
||||
ATLAS_EC_SM,
|
||||
ATLAS_ORP_SM,
|
||||
};
|
||||
|
||||
struct atlas_data {
|
||||
|
|
@ -159,6 +164,23 @@ static const struct iio_chan_spec atlas_ec_channels[] = {
|
|||
},
|
||||
};
|
||||
|
||||
static const struct iio_chan_spec atlas_orp_channels[] = {
|
||||
{
|
||||
.type = IIO_VOLTAGE,
|
||||
.address = ATLAS_REG_ORP_DATA,
|
||||
.info_mask_separate =
|
||||
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
|
||||
.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;
|
||||
|
|
@ -224,6 +246,22 @@ static int atlas_check_ec_calibration(struct atlas_data *data)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int atlas_check_orp_calibration(struct atlas_data *data)
|
||||
{
|
||||
struct device *dev = &data->client->dev;
|
||||
int ret;
|
||||
unsigned int val;
|
||||
|
||||
ret = regmap_read(data->regmap, ATLAS_REG_ORP_CALIB_STATUS, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (!val)
|
||||
dev_warn(dev, "device has not been calibrated\n");
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
struct atlas_device {
|
||||
const struct iio_chan_spec *channels;
|
||||
int num_channels;
|
||||
|
|
@ -248,7 +286,13 @@ static struct atlas_device atlas_devices[] = {
|
|||
.calibration = &atlas_check_ec_calibration,
|
||||
.delay = ATLAS_EC_INT_TIME_IN_US,
|
||||
},
|
||||
|
||||
[ATLAS_ORP_SM] = {
|
||||
.channels = atlas_orp_channels,
|
||||
.num_channels = 2,
|
||||
.data_reg = ATLAS_REG_ORP_DATA,
|
||||
.calibration = &atlas_check_orp_calibration,
|
||||
.delay = ATLAS_ORP_INT_TIME_IN_US,
|
||||
},
|
||||
};
|
||||
|
||||
static int atlas_set_powermode(struct atlas_data *data, int on)
|
||||
|
|
@ -386,6 +430,7 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
|
|||
case IIO_PH:
|
||||
case IIO_CONCENTRATION:
|
||||
case IIO_ELECTRICALCONDUCTIVITY:
|
||||
case IIO_VOLTAGE:
|
||||
ret = iio_device_claim_direct_mode(indio_dev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
|
@ -422,6 +467,10 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
|
|||
*val = 0; /* 0.000000001 */
|
||||
*val2 = 1000;
|
||||
return IIO_VAL_INT_PLUS_NANO;
|
||||
case IIO_VOLTAGE:
|
||||
*val = 1; /* 0.1 */
|
||||
*val2 = 10;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
|
@ -457,6 +506,7 @@ static const struct iio_info atlas_info = {
|
|||
static const struct i2c_device_id atlas_id[] = {
|
||||
{ "atlas-ph-sm", ATLAS_PH_SM},
|
||||
{ "atlas-ec-sm", ATLAS_EC_SM},
|
||||
{ "atlas-orp-sm", ATLAS_ORP_SM},
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, atlas_id);
|
||||
|
|
@ -464,6 +514,7 @@ MODULE_DEVICE_TABLE(i2c, atlas_id);
|
|||
static const struct of_device_id atlas_dt_ids[] = {
|
||||
{ .compatible = "atlas,ph-sm", .data = (void *)ATLAS_PH_SM, },
|
||||
{ .compatible = "atlas,ec-sm", .data = (void *)ATLAS_EC_SM, },
|
||||
{ .compatible = "atlas,orp-sm", .data = (void *)ATLAS_ORP_SM, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, atlas_dt_ids);
|
||||
|
|
|
|||
Loading…
Reference in a new issue