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path: root/drivers/iio/chemical/atlas-ph-sensor.c
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Diffstat (limited to 'drivers/iio/chemical/atlas-ph-sensor.c')
-rw-r--r--drivers/iio/chemical/atlas-ph-sensor.c81
1 files changed, 57 insertions, 24 deletions
diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
index ae038a59d256..84fbff32b96d 100644
--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -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 {
@@ -84,26 +89,10 @@ struct atlas_data {
__be32 buffer[6]; /* 96-bit data + 32-bit pad + 64-bit timestamp */
};
-static const struct regmap_range atlas_volatile_ranges[] = {
- regmap_reg_range(ATLAS_REG_INT_CONTROL, ATLAS_REG_INT_CONTROL),
- regmap_reg_range(ATLAS_REG_PH_DATA, ATLAS_REG_PH_DATA + 4),
- regmap_reg_range(ATLAS_REG_EC_DATA, ATLAS_REG_PSS_DATA + 4),
-};
-
-static const struct regmap_access_table atlas_volatile_table = {
- .yes_ranges = atlas_volatile_ranges,
- .n_yes_ranges = ARRAY_SIZE(atlas_volatile_ranges),
-};
-
static const struct regmap_config atlas_regmap_config = {
.name = ATLAS_REGMAP_NAME,
-
.reg_bits = 8,
.val_bits = 8,
-
- .volatile_table = &atlas_volatile_table,
- .max_register = ATLAS_REG_PSS_DATA + 4,
- .cache_type = REGCACHE_RBTREE,
};
static const struct iio_chan_spec atlas_ph_channels[] = {
@@ -175,6 +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;
@@ -240,6 +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;
@@ -264,7 +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)
@@ -402,15 +430,14 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
case IIO_PH:
case IIO_CONCENTRATION:
case IIO_ELECTRICALCONDUCTIVITY:
- mutex_lock(&indio_dev->mlock);
+ case IIO_VOLTAGE:
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
- if (iio_buffer_enabled(indio_dev))
- ret = -EBUSY;
- else
- ret = atlas_read_measurement(data,
- chan->address, &reg);
+ ret = atlas_read_measurement(data, chan->address, &reg);
- mutex_unlock(&indio_dev->mlock);
+ iio_device_release_direct_mode(indio_dev);
break;
default:
ret = -EINVAL;
@@ -440,6 +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;
}
@@ -475,6 +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);
@@ -482,6 +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);