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authorShreeya Patel <shreeya.patel@collabora.com>2023-11-08 00:50:05 +0530
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2023-11-26 18:01:40 +0000
commit00799564bafdd73db1bb0482eefbe1aba7d5e15f (patch)
tree66e0d4459507bc8cae37a7cf5f2f6deefea2d873 /drivers/iio/light
parent39dac9d0511ff735a4937c5aded7c84aed55f57e (diff)
iio: light: ltrf216a: Return floating point values
For better precision of input light intesity, return floating point values through sysfs instead of an integer value Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com> Link: https://lore.kernel.org/r/20231107192005.285534-1-shreeya.patel@collabora.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/light')
-rw-r--r--drivers/iio/light/ltrf216a.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c
index 8de4dd849936..68dc48420a88 100644
--- a/drivers/iio/light/ltrf216a.c
+++ b/drivers/iio/light/ltrf216a.c
@@ -234,7 +234,7 @@ static int ltrf216a_read_data(struct ltrf216a_data *data, u8 addr)
static int ltrf216a_get_lux(struct ltrf216a_data *data)
{
int ret, greendata;
- u64 lux, div;
+ u64 lux;
ret = ltrf216a_set_power_state(data, true);
if (ret)
@@ -246,10 +246,9 @@ static int ltrf216a_get_lux(struct ltrf216a_data *data)
ltrf216a_set_power_state(data, false);
- lux = greendata * 45 * LTRF216A_WIN_FAC * 100;
- div = data->als_gain_fac * data->int_time_fac * 100;
+ lux = greendata * 45 * LTRF216A_WIN_FAC;
- return div_u64(lux, div);
+ return lux;
}
static int ltrf216a_read_raw(struct iio_dev *indio_dev,
@@ -279,7 +278,8 @@ static int ltrf216a_read_raw(struct iio_dev *indio_dev,
if (ret < 0)
return ret;
*val = ret;
- return IIO_VAL_INT;
+ *val2 = data->als_gain_fac * data->int_time_fac;
+ return IIO_VAL_FRACTIONAL;
case IIO_CHAN_INFO_INT_TIME:
mutex_lock(&data->lock);
ret = ltrf216a_get_int_time(data, val, val2);