diff options
Diffstat (limited to 'drivers/iio/chemical/atlas-ph-sensor.c')
| -rw-r--r-- | drivers/iio/chemical/atlas-ph-sensor.c | 83 |
1 files changed, 58 insertions, 25 deletions
diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c index ae038a59d256..bd321b305a0a 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, ®); + ret = atlas_read_measurement(data, chan->address, ®); - mutex_unlock(&indio_dev->mlock); + iio_device_release_direct_mode(indio_dev); break; default: ret = -EINVAL; @@ -434,12 +461,16 @@ static int atlas_read_raw(struct iio_dev *indio_dev, break; case IIO_ELECTRICALCONDUCTIVITY: *val = 1; /* 0.00001 */ - *val = 100000; + *val2 = 100000; break; case IIO_CONCENTRATION: *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); |