Add extra IIO_CHAN_INFO_SCALE in order to be able to have the scales
for the values in userspace. Can be used for triggered buffers.
Signed-off-by: Vasileios Amoiridis <vassilisamir@xxxxxxxxx>
---
drivers/iio/pressure/bmp280-core.c | 70 ++++++++++++++++++++++++++++++
1 file changed, 70 insertions(+)
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 29a8b7195076..acdf6138d317 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -138,16 +138,19 @@ static const struct iio_chan_spec bmp280_channels[] = {
{
.type = IIO_PRESSURE,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
},
{
.type = IIO_TEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
},
{
.type = IIO_HUMIDITYRELATIVE,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
},
};
@@ -156,6 +159,7 @@ static const struct iio_chan_spec bmp380_channels[] = {
{
.type = IIO_PRESSURE,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
@@ -163,6 +167,7 @@ static const struct iio_chan_spec bmp380_channels[] = {
{
.type = IIO_TEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
@@ -170,6 +175,7 @@ static const struct iio_chan_spec bmp380_channels[] = {
{
.type = IIO_HUMIDITYRELATIVE,
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+ BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
@@ -487,6 +493,70 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
break;
}
break;
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_HUMIDITYRELATIVE:
+ if (!strcmp(indio_dev->name, "bme280")) {
+ *val = 1000;
+ *val2 = 1024;
+ ret = IIO_VAL_FRACTIONAL;
+ } else {
+ ret = -EINVAL;
+ }
+ break;
+ case IIO_PRESSURE:
+ if ((!strcmp(indio_dev->name, "bmp085")) ||
+ (!strcmp(indio_dev->name, "bmp180")) ||
+ (!strcmp(indio_dev->name, "bmp181"))) {
+ *val = 1;
+ *val2 = 1000;
+ ret = IIO_VAL_FRACTIONAL;
+ } else if ((!strcmp(indio_dev->name, "bmp280")) ||
+ (!strcmp(indio_dev->name, "bme280"))) {
+ *val = 1;
+ *val2 = 256000;
+ ret = IIO_VAL_FRACTIONAL;
+ } else if (!strcmp(indio_dev->name, "bmp380")) {
+ *val = 1;
+ *val2 = 100000;
+ ret = IIO_VAL_FRACTIONAL;
+ } else if (!strcmp(indio_dev->name, "bmp580")) {
+ *val = 1;
+ *val2 = 64000;
+ ret = IIO_VAL_FRACTIONAL;
+ } else {
+ ret = -EINVAL;
+ }
+ break;
+ case IIO_TEMP:
+ if ((!strcmp(indio_dev->name, "bmp085")) ||
+ (!strcmp(indio_dev->name, "bmp180")) ||
+ (!strcmp(indio_dev->name, "bmp181"))) {
+ *val = 100;
+ *val2 = 1;
+ ret = IIO_VAL_FRACTIONAL;
+ } else if ((!strcmp(indio_dev->name, "bmp280")) ||
+ (!strcmp(indio_dev->name, "bme280"))) {
+ *val = 10;
+ *val2 = 1;
+ ret = IIO_VAL_FRACTIONAL;
+ } else if (!strcmp(indio_dev->name, "bmp380")) {
+ *val = 10;
+ *val2 = 1;
+ ret = IIO_VAL_FRACTIONAL;
+ } else if (!strcmp(indio_dev->name, "bmp580")) {
+ *val = 1000;
+ *val2 = 16;
+ ret = IIO_VAL_FRACTIONAL_LOG2;
+ } else {
+ ret = -EINVAL;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ break;
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
--
2.25.1
