Export this function in preparation for the fix in veml6030.c, where the
total gain can be used to ease the calculation of the processed value of
the IIO_LIGHT channel compared to acquiring the scale in NANO.
Suggested-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
---
drivers/iio/industrialio-gts-helper.c | 11 ++++++++++-
include/linux/iio/iio-gts-helper.h | 1 +
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c
index 200364b42ead2f560b852fc2f533b4aa83302810..f35c36fd4a55f6d5f0f2ad0c0402cea8fab890b0 100644
--- a/drivers/iio/industrialio-gts-helper.c
+++ b/drivers/iio/industrialio-gts-helper.c
@@ -1026,7 +1026,15 @@ int iio_gts_find_gain_time_sel_for_scale(struct iio_gts *gts, int scale_int,
}
EXPORT_SYMBOL_NS_GPL(iio_gts_find_gain_time_sel_for_scale, "IIO_GTS_HELPER");
-static int iio_gts_get_total_gain(struct iio_gts *gts, int gain, int time)
+/**
+ * iio_gts_get_total_gain - Fetch total gain for given HW-gain and time
+ * @gts: Gain time scale descriptor
+ * @gain: HW-gain for which the total gain is searched for
+ * @time: Integration time for which the total gain is searched for
+ *
+ * Return: total gain on success and -EINVAL on error.
+ */
+int iio_gts_get_total_gain(struct iio_gts *gts, int gain, int time)
{
const struct iio_itime_sel_mul *itime;
@@ -1042,6 +1050,7 @@ static int iio_gts_get_total_gain(struct iio_gts *gts, int gain, int time)
return gain * itime->mul;
}
+EXPORT_SYMBOL_NS_GPL(iio_gts_get_total_gain, "IIO_GTS_HELPER");
static int iio_gts_get_scale_linear(struct iio_gts *gts, int gain, int time,
u64 *scale)
diff --git a/include/linux/iio/iio-gts-helper.h b/include/linux/iio/iio-gts-helper.h
index e5de7a124bad6eb65414df364f84e81301b0690b..66f830ab9b49b566d549c7b5b8291d42a0825b96 100644
--- a/include/linux/iio/iio-gts-helper.h
+++ b/include/linux/iio/iio-gts-helper.h
@@ -208,5 +208,6 @@ int iio_gts_all_avail_scales(struct iio_gts *gts, const int **vals, int *type,
int *length);
int iio_gts_avail_scales_for_time(struct iio_gts *gts, int time,
const int **vals, int *type, int *length);
+int iio_gts_get_total_gain(struct iio_gts *gts, int gain, int time);
#endif
--
2.43.0
