diff options
Diffstat (limited to 'drivers/iio/adc/vf610_adc.c')
| -rw-r--r-- | drivers/iio/adc/vf610_adc.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index 4a10ae97dbf2..7ec21b5612ef 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -91,7 +91,7 @@ #define VF610_ADC_CAL 0x80 /* Other field define */ -#define VF610_ADC_ADCHC(x) ((x) & 0xF) +#define VF610_ADC_ADCHC(x) ((x) & 0x1F) #define VF610_ADC_AIEN (0x1 << 7) #define VF610_ADC_CONV_DISABLE 0x1F #define VF610_ADC_HS_COCO0 0x1 @@ -153,6 +153,12 @@ struct vf610_adc { BIT(IIO_CHAN_INFO_SAMP_FREQ), \ } +#define VF610_ADC_TEMPERATURE_CHAN(_idx, _chan_type) { \ + .type = (_chan_type), \ + .channel = (_idx), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \ +} + static const struct iio_chan_spec vf610_adc_iio_channels[] = { VF610_ADC_CHAN(0, IIO_VOLTAGE), VF610_ADC_CHAN(1, IIO_VOLTAGE), @@ -170,6 +176,7 @@ static const struct iio_chan_spec vf610_adc_iio_channels[] = { VF610_ADC_CHAN(13, IIO_VOLTAGE), VF610_ADC_CHAN(14, IIO_VOLTAGE), VF610_ADC_CHAN(15, IIO_VOLTAGE), + VF610_ADC_TEMPERATURE_CHAN(26, IIO_TEMP), /* sentinel */ }; @@ -451,6 +458,7 @@ static int vf610_read_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: + case IIO_CHAN_INFO_PROCESSED: mutex_lock(&indio_dev->mlock); reinit_completion(&info->completion); @@ -468,7 +476,23 @@ static int vf610_read_raw(struct iio_dev *indio_dev, return ret; } - *val = info->value; + switch (chan->type) { + case IIO_VOLTAGE: + *val = info->value; + break; + case IIO_TEMP: + /* + * Calculate in degree Celsius times 1000 + * Using sensor slope of 1.84 mV/°C and + * V at 25°C of 696 mV + */ + *val = 25000 - ((int)info->value - 864) * 1000000 / 1840; + break; + default: + mutex_unlock(&indio_dev->mlock); + return -EINVAL; + } + mutex_unlock(&indio_dev->mlock); return IIO_VAL_INT; |