diff options
| author | Javier Carrasco <javier.carrasco.cruz@gmail.com> | 2025-01-27 20:30:22 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-02-08 15:16:29 +0000 |
| commit | dbd2e08ff09fd6bd51215b44474899cc1b7b7a16 (patch) | |
| tree | 7d5c3d0de32a3470f32d02dff52c1cef5a743cc3 | |
| parent | ec08c3954689ab21fa15e0c0cdc6936480c237b7 (diff) | |
iio: gts-helper: export iio_gts_get_total_gain()
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>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/20250127-veml6030-scale-v3-1-4f32ba03df94@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/industrialio-gts-helper.c | 11 | ||||
| -rw-r--r-- | include/linux/iio/iio-gts-helper.h | 1 |
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c index 200364b42ead..f35c36fd4a55 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 e5de7a124bad..66f830ab9b49 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 |