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path: root/drivers/iio/adc/vf610_adc.c
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Diffstat (limited to 'drivers/iio/adc/vf610_adc.c')
-rw-r--r--drivers/iio/adc/vf610_adc.c28
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;