[PATCH v2 3/4] iio: gts-helper: export iio_gts_get_total_gain()

Javier Carrasco
2025-01-19T17:32:08Z

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@gmail.com>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
---
drivers/iio/industrialio-gts-helper.c | 3 ++-
include/linux/iio/iio-gts-helper.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c
index d70ebe3bf7742906960c6af22102682c5b8dcdfa..6ec434338411d09fffa1db52046a7df9b34c89bf 100644
--- a/drivers/iio/industrialio-gts-helper.c
+++ b/drivers/iio/industrialio-gts-helper.c
@@ -950,7 +950,7 @@ 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)
+int iio_gts_get_total_gain(struct iio_gts *gts, int gain, int time)
{
const struct iio_itime_sel_mul *itime;

@@ -966,6 +966,7 @@ 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