From: Javier Carrasco Date: Mon, 27 Jan 2025 19:30:22 +0000 (+0100) Subject: iio: gts-helper: export iio_gts_get_total_gain() X-Git-Tag: v6.15-rc1~78^2~8^2~181 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dbd2e08ff09fd6bd51215b44474899cc1b7b7a16;p=thirdparty%2Fkernel%2Flinux.git 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 Signed-off-by: Javier Carrasco Reviewed-by: Matti Vaittinen Link: https://patch.msgid.link/20250127-veml6030-scale-v3-1-4f32ba03df94@gmail.com Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c index 200364b42ead2..f35c36fd4a55f 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 e5de7a124bad6..66f830ab9b49b 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