diff options
Diffstat (limited to 'drivers/iio/humidity/htu21.c')
| -rw-r--r-- | drivers/iio/humidity/htu21.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/drivers/iio/humidity/htu21.c b/drivers/iio/humidity/htu21.c index b7f8d0520dde..d1636a74980e 100644 --- a/drivers/iio/humidity/htu21.c +++ b/drivers/iio/humidity/htu21.c @@ -1,6 +1,7 @@ /* * htu21.c - Support for Measurement-Specialties * htu21 temperature & humidity sensor + * and humidity part of MS8607 sensor * * Copyright (c) 2014 Measurement-Specialties * @@ -10,6 +11,8 @@ * * Datasheet: * http://www.meas-spec.com/downloads/HTU21D.pdf + * Datasheet: + * http://www.meas-spec.com/downloads/MS8607-02BA01.pdf */ #include <linux/init.h> @@ -24,6 +27,11 @@ #define HTU21_RESET 0xFE +enum { + HTU21, + MS8607 +}; + static const int htu21_samp_freq[4] = { 20, 40, 70, 120 }; /* String copy of the above const for readability purpose */ static const char htu21_show_samp_freq[] = "20 40 70 120"; @@ -106,6 +114,18 @@ static const struct iio_chan_spec htu21_channels[] = { } }; +/* + * Meas Spec recommendation is to not read temperature + * on this driver part for MS8607 + */ +static const struct iio_chan_spec ms8607_channels[] = { + { + .type = IIO_HUMIDITYRELATIVE, + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + } +}; + static ssize_t htu21_show_battery_low(struct device *dev, struct device_attribute *attr, char *buf) { @@ -188,8 +208,14 @@ static int htu21_probe(struct i2c_client *client, indio_dev->name = id->name; indio_dev->dev.parent = &client->dev; indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->channels = htu21_channels; - indio_dev->num_channels = ARRAY_SIZE(htu21_channels); + + if (id->driver_data == MS8607) { + indio_dev->channels = ms8607_channels; + indio_dev->num_channels = ARRAY_SIZE(ms8607_channels); + } else { + indio_dev->channels = htu21_channels; + indio_dev->num_channels = ARRAY_SIZE(htu21_channels); + } i2c_set_clientdata(client, indio_dev); @@ -206,7 +232,8 @@ static int htu21_probe(struct i2c_client *client, } static const struct i2c_device_id htu21_id[] = { - {"htu21", 0}, + {"htu21", HTU21}, + {"ms8607-humidity", MS8607}, {} }; |