diff options
Diffstat (limited to 'drivers/iio/chemical/atlas-sensor.c')
| -rw-r--r-- | drivers/iio/chemical/atlas-sensor.c | 109 |
1 files changed, 90 insertions, 19 deletions
diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c index 2f0a6fed2589..7b199ce16ecf 100644 --- a/drivers/iio/chemical/atlas-sensor.c +++ b/drivers/iio/chemical/atlas-sensor.c @@ -48,6 +48,11 @@ #define ATLAS_REG_EC_CALIB_STATUS_LOW BIT(2) #define ATLAS_REG_EC_CALIB_STATUS_HIGH BIT(3) +#define ATLAS_REG_DO_CALIB_STATUS 0x09 +#define ATLAS_REG_DO_CALIB_STATUS_MASK 0x03 +#define ATLAS_REG_DO_CALIB_STATUS_PRESSURE BIT(0) +#define ATLAS_REG_DO_CALIB_STATUS_DO BIT(1) + #define ATLAS_REG_PH_TEMP_DATA 0x0e #define ATLAS_REG_PH_DATA 0x16 @@ -60,14 +65,19 @@ #define ATLAS_REG_ORP_CALIB_STATUS 0x0d #define ATLAS_REG_ORP_DATA 0x0e +#define ATLAS_REG_DO_TEMP_DATA 0x12 +#define ATLAS_REG_DO_DATA 0x22 + #define ATLAS_PH_INT_TIME_IN_MS 450 #define ATLAS_EC_INT_TIME_IN_MS 650 #define ATLAS_ORP_INT_TIME_IN_MS 450 +#define ATLAS_DO_INT_TIME_IN_MS 450 enum { ATLAS_PH_SM, ATLAS_EC_SM, ATLAS_ORP_SM, + ATLAS_DO_SM, }; struct atlas_data { @@ -76,6 +86,7 @@ struct atlas_data { struct atlas_device *chip; struct regmap *regmap; struct irq_work work; + unsigned int interrupt_enabled; __be32 buffer[6]; /* 96-bit data + 32-bit pad + 64-bit timestamp */ }; @@ -121,7 +132,7 @@ static const struct iio_chan_spec atlas_ph_channels[] = { }, }; -#define ATLAS_EC_CHANNEL(_idx, _addr) \ +#define ATLAS_CONCENTRATION_CHANNEL(_idx, _addr) \ {\ .type = IIO_CONCENTRATION, \ .indexed = 1, \ @@ -152,8 +163,8 @@ static const struct iio_chan_spec atlas_ec_channels[] = { .endianness = IIO_BE, }, }, - ATLAS_EC_CHANNEL(0, ATLAS_REG_TDS_DATA), - ATLAS_EC_CHANNEL(1, ATLAS_REG_PSS_DATA), + ATLAS_CONCENTRATION_CHANNEL(0, ATLAS_REG_TDS_DATA), + ATLAS_CONCENTRATION_CHANNEL(1, ATLAS_REG_PSS_DATA), IIO_CHAN_SOFT_TIMESTAMP(3), { .type = IIO_TEMP, @@ -182,6 +193,31 @@ static const struct iio_chan_spec atlas_orp_channels[] = { IIO_CHAN_SOFT_TIMESTAMP(1), }; +static const struct iio_chan_spec atlas_do_channels[] = { + { + .type = IIO_CONCENTRATION, + .address = ATLAS_REG_DO_DATA, + .info_mask_separate = + BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), + .scan_index = 0, + .scan_type = { + .sign = 'u', + .realbits = 32, + .storagebits = 32, + .endianness = IIO_BE, + }, + }, + IIO_CHAN_SOFT_TIMESTAMP(1), + { + .type = IIO_TEMP, + .address = ATLAS_REG_DO_TEMP_DATA, + .info_mask_separate = + BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), + .output = 1, + .scan_index = -1 + }, +}; + static int atlas_check_ph_calibration(struct atlas_data *data) { struct device *dev = &data->client->dev; @@ -262,7 +298,31 @@ static int atlas_check_orp_calibration(struct atlas_data *data) dev_warn(dev, "device has not been calibrated\n"); return 0; -}; +} + +static int atlas_check_do_calibration(struct atlas_data *data) +{ + struct device *dev = &data->client->dev; + int ret; + unsigned int val; + + ret = regmap_read(data->regmap, ATLAS_REG_DO_CALIB_STATUS, &val); + if (ret) + return ret; + + if (!(val & ATLAS_REG_DO_CALIB_STATUS_MASK)) { + dev_warn(dev, "device has not been calibrated\n"); + return 0; + } + + if (!(val & ATLAS_REG_DO_CALIB_STATUS_PRESSURE)) + dev_warn(dev, "device missing atmospheric pressure calibration\n"); + + if (!(val & ATLAS_REG_DO_CALIB_STATUS_DO)) + dev_warn(dev, "device missing dissolved oxygen calibration\n"); + + return 0; +} struct atlas_device { const struct iio_chan_spec *channels; @@ -295,6 +355,13 @@ static struct atlas_device atlas_devices[] = { .calibration = &atlas_check_orp_calibration, .delay = ATLAS_ORP_INT_TIME_IN_MS, }, + [ATLAS_DO_SM] = { + .channels = atlas_do_channels, + .num_channels = 3, + .data_reg = ATLAS_REG_DO_DATA, + .calibration = &atlas_check_do_calibration, + .delay = ATLAS_DO_INT_TIME_IN_MS, + }, }; static int atlas_set_powermode(struct atlas_data *data, int on) @@ -304,6 +371,9 @@ static int atlas_set_powermode(struct atlas_data *data, int on) static int atlas_set_interrupt(struct atlas_data *data, bool state) { + if (!data->interrupt_enabled) + return 0; + return regmap_update_bits(data->regmap, ATLAS_REG_INT_CONTROL, ATLAS_REG_INT_CONTROL_EN, state ? ATLAS_REG_INT_CONTROL_EN : 0); @@ -507,6 +577,7 @@ 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}, + { "atlas-do-sm", ATLAS_DO_SM}, {} }; MODULE_DEVICE_TABLE(i2c, atlas_id); @@ -515,6 +586,7 @@ 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, }, + { .compatible = "atlas,do-sm", .data = (void *)ATLAS_DO_SM, }, { } }; MODULE_DEVICE_TABLE(of, atlas_dt_ids); @@ -572,11 +644,6 @@ static int atlas_probe(struct i2c_client *client, if (ret) return ret; - if (client->irq <= 0) { - dev_err(&client->dev, "no valid irq defined\n"); - return -EINVAL; - } - ret = chip->calibration(data); if (ret) return ret; @@ -596,16 +663,20 @@ static int atlas_probe(struct i2c_client *client, init_irq_work(&data->work, atlas_work_handler); - /* interrupt pin toggles on new conversion */ - ret = devm_request_threaded_irq(&client->dev, client->irq, - NULL, atlas_interrupt_handler, - IRQF_TRIGGER_RISING | - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - "atlas_irq", - indio_dev); - if (ret) { - dev_err(&client->dev, "request irq (%d) failed\n", client->irq); - goto unregister_buffer; + if (client->irq > 0) { + /* interrupt pin toggles on new conversion */ + ret = devm_request_threaded_irq(&client->dev, client->irq, + NULL, atlas_interrupt_handler, + IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + "atlas_irq", + indio_dev); + + if (ret) + dev_warn(&client->dev, + "request irq (%d) failed\n", client->irq); + else + data->interrupt_enabled = 1; } ret = atlas_set_powermode(data, 1); |