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From:   =?UTF-8?q?Patrik=20Dahlstr=C3=B6m?= <risca@dalakolonin.se>
To:     linux-iio@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org,
        kernel@pyra-handheld.com, pgoudagunta@nvidia.com,
        hns@goldelico.com, jic23@kernel.org, lars@metafoo.de,
        linux-omap@vger.kernel.org,
        =?UTF-8?q?Patrik=20Dahlstr=C3=B6m?= <risca@dalakolonin.se>
Subject: [PATCH v4 5/9] iio: adc: palmas: use iio_event_direction for threshold polarity
Date:   Sat,  8 Apr 2023 13:48:21 +0200
Message-Id: <20230408114825.824505-6-risca@dalakolonin.se>
In-Reply-To: <20230408114825.824505-1-risca@dalakolonin.se>
References: <20230408114825.824505-1-risca@dalakolonin.se>
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Precedence: bulk

Instead of having high_threshold > 0 as an indicator for upper threshold
event and lower threshold event otherwise, use enum iio_event_direction
instead. This is hopefully less ambiguous.

Signed-off-by: Patrik Dahlstr=C3=B6m <risca@dalakolonin.se>
---
 drivers/iio/adc/palmas_gpadc.c | 36 ++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 13 deletions(-)

diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpad=
c.c
index 55fdf59ef711..205a7628b235 100644
--- a/drivers/iio/adc/palmas_gpadc.c
+++ b/drivers/iio/adc/palmas_gpadc.c
@@ -77,9 +77,9 @@ static struct palmas_gpadc_info palmas_gpadc_info[] =3D=
 {
 };
=20
 struct palmas_adc_event {
-	int adc_channel_number;
-	int adc_high_threshold;
-	int adc_low_threshold;
+	int channel;
+	int raw_thresh;
+	enum iio_event_direction direction;
 };
=20
 /*
@@ -618,16 +618,21 @@ static int palmas_adc_configure_events(struct palma=
s_gpadc *adc)
=20
 	conv =3D 0;
 	if (adc->event0_enable) {
+		struct palmas_adc_event *ev =3D &adc->event0;
 		int polarity;
=20
-		ch0 =3D adc->event0.adc_channel_number;
+		ch0 =3D ev->channel;
+		thres =3D ev->raw_thresh;
 		conv |=3D PALMAS_GPADC_AUTO_CTRL_AUTO_CONV0_EN;
-		if (adc->event0.adc_high_threshold > 0) {
-			thres =3D adc->event0.adc_high_threshold;
+		switch (ev->direction) {
+		case IIO_EV_DIR_RISING:
 			polarity =3D 0;
-		} else {
-			thres =3D adc->event0.adc_low_threshold;
+			break;
+		case IIO_EV_DIR_FALLING:
 			polarity =3D PALMAS_GPADC_THRES_CONV0_MSB_THRES_CONV0_POL;
+			break;
+		default:
+			return -EINVAL;
 		}
=20
 		ret =3D palmas_write(adc->palmas, PALMAS_GPADC_BASE,
@@ -649,16 +654,21 @@ static int palmas_adc_configure_events(struct palma=
s_gpadc *adc)
 	}
=20
 	if (adc->event1_enable) {
+		struct palmas_adc_event *ev =3D &adc->event1;
 		int polarity;
=20
-		ch1 =3D adc->event1.adc_channel_number;
+		ch1 =3D ev->channel;
+		thres =3D ev->raw_thresh;
 		conv |=3D PALMAS_GPADC_AUTO_CTRL_AUTO_CONV1_EN;
-		if (adc->event1.adc_high_threshold > 0) {
-			thres =3D adc->event1.adc_high_threshold;
+		switch (ev->direction) {
+		case IIO_EV_DIR_RISING:
 			polarity =3D 0;
-		} else {
-			thres =3D adc->event1.adc_low_threshold;
+			break;
+		case IIO_EV_DIR_FALLING:
 			polarity =3D PALMAS_GPADC_THRES_CONV1_MSB_THRES_CONV1_POL;
+			break;
+		default:
+			return -EINVAL;
 		}
=20
 		ret =3D palmas_write(adc->palmas, PALMAS_GPADC_BASE,
--=20
2.25.1