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From: Marc Kleine-Budde <mkl@pengutronix.de>
To: linux-iio@vger.kernel.org
Cc: Jonathan Cameron <jic23@kernel.org>,
	Lars-Peter Clausen <lars@metafoo.de>,
	kernel@pengutronix.de,
	Oliver Lang <Oliver.Lang@gossenmetrawatt.com>,
	Marc Kleine-Budde <mkl@pengutronix.de>
Subject: [PATCH 3/4] iio: ltr501: ltr501_read_ps(): add missing endianness conversion
Date: Thu, 10 Jun 2021 14:53:57 +0200	[thread overview]
Message-ID: <20210610125358.2096497-4-mkl@pengutronix.de> (raw)
In-Reply-To: <20210610125358.2096497-1-mkl@pengutronix.de>

From: Oliver Lang <Oliver.Lang@gossenmetrawatt.com>

The PS ADC Channel data is spread over 2 registers in little-endian
form. This patch adds the missing endianness conversion.

Fixes: 2690be905123 ("iio: Add Lite-On ltr501 ambient light / proximity sensor driver")
Signed-off-by: Oliver Lang <Oliver.Lang@gossenmetrawatt.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/iio/light/ltr501.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 79898b72fe73..0e3f97ef3cdd 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -407,20 +407,16 @@ static int ltr501_read_als(const struct ltr501_data *data, __le16 buf[2])
 				buf, 2 * sizeof(__le16));
 }
 
-static int ltr501_read_ps(const struct ltr501_data *data)
+static int ltr501_read_ps(const struct ltr501_data *data, __le16 *buf)
 {
-	int ret, status;
+	int ret;
 
 	ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY);
 	if (ret < 0)
 		return ret;
 
-	ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA,
-			       &status, 2);
-	if (ret < 0)
-		return ret;
-
-	return status;
+	return regmap_bulk_read(data->regmap, LTR501_PS_DATA,
+				buf, sizeof(__le16));
 }
 
 static int ltr501_read_intr_prst(const struct ltr501_data *data,
@@ -668,11 +664,11 @@ static int ltr501_read_raw(struct iio_dev *indio_dev,
 			break;
 		case IIO_PROXIMITY:
 			mutex_lock(&data->lock_ps);
-			ret = ltr501_read_ps(data);
+			ret = ltr501_read_ps(data, buf);
 			mutex_unlock(&data->lock_ps);
 			if (ret < 0)
 				break;
-			*val = ret & LTR501_PS_DATA_MASK;
+			*val = le16_to_cpu(buf[0]) & LTR501_PS_DATA_MASK;
 			ret = IIO_VAL_INT;
 			break;
 		default:
-- 
2.30.2



  parent reply	other threads:[~2021-06-10 12:54 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-10 12:53 [PATCH 1/4] iio: ltr501: fix regmap, initialization of ltr559, endianness and mark structs as const Marc Kleine-Budde
2021-06-10 12:53 ` [PATCH 1/4] iio: ltr501: mark register holding upper 8 bits of ALS_DATA{0,1} and PS_DATA as volatile, too Marc Kleine-Budde
2021-06-10 12:53 ` [PATCH 2/4] iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR Marc Kleine-Budde
2021-06-10 12:53 ` Marc Kleine-Budde [this message]
2021-06-10 13:21   ` [PATCH 3/4] iio: ltr501: ltr501_read_ps(): add missing endianness conversion Andy Shevchenko
2021-06-10 13:31     ` Marc Kleine-Budde
2021-06-10 13:34       ` Andy Shevchenko
2021-06-10 12:53 ` [PATCH 4/4] iio: ltr501: mark ltr501_chip_info as const Marc Kleine-Budde
2021-06-10 13:09 ` [PATCH 1/4] iio: ltr501: fix regmap, initialization of ltr559, endianness and mark structs " Andy Shevchenko
2021-06-10 13:22 ` Andy Shevchenko

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