On 19/04/14 00:22, Srinivas Pandruvada wrote:
Using units and unit exponent to calculate scale which is compliant
to IIO ABI.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Applied to the togreg branch of iio.git
Thanks,
---
drivers/iio/light/hid-sensor-als.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index 621541f..39b50be 100644
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -37,6 +37,10 @@ struct als_state {
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info als_illum;
u32 illum;
+ int scale_pre_decml;
+ int scale_post_decml;
+ int scale_precision;
+ int value_offset;
};
/* Channel definitions */
@@ -102,12 +106,12 @@ static int als_read_raw(struct iio_dev *indio_dev,
ret_type = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_SCALE:
- *val = als_state->als_illum.units;
- ret_type = IIO_VAL_INT;
+ *val = als_state->scale_pre_decml;
+ *val2 = als_state->scale_post_decml;
+ ret_type = als_state->scale_precision;
break;
case IIO_CHAN_INFO_OFFSET:
- *val = hid_sensor_convert_exponent(
- als_state->als_illum.unit_expo);
+ *val = als_state->value_offset;
ret_type = IIO_VAL_INT;
break;
case IIO_CHAN_INFO_SAMP_FREQ:
@@ -229,6 +233,11 @@ static int als_parse_report(struct platform_device *pdev,
dev_dbg(&pdev->dev, "als %x:%x\n", st->als_illum.index,
st->als_illum.report_id);
+ st->scale_precision = hid_sensor_format_scale(
+ HID_USAGE_SENSOR_ALS,
+ &st->als_illum,
+ &st->scale_pre_decml, &st->scale_post_decml);
+
/* Set Sensitivity field ids, when there is no individual modifier */
if (st->common_attributes.sensitivity.index < 0) {
sensor_hub_input_get_attribute_info(hsdev,
--
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