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From: Lothar Rubusch <l.rubusch@gmail.com>
To: lars@metafoo.de, Michael.Hennerich@analog.com, jic23@kernel.org,
	dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org,
	corbet@lwn.net
Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, eraretuya@gmail.com,
	l.rubusch@gmail.com
Subject: [PATCH v11 2/8] iio: accel: adxl345: simplify reading the FIFO
Date: Wed,  2 Jul 2025 23:03:09 +0000	[thread overview]
Message-ID: <20250702230315.19297-3-l.rubusch@gmail.com> (raw)
In-Reply-To: <20250702230315.19297-1-l.rubusch@gmail.com>

Bulk FIFO reading can be streamlined by eliminating redundant variables and
simplifying the process of reading x-, y-, and z-axis measurement sets.

This is a refactoring change with no expected impact on functionality.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
 drivers/iio/accel/adxl345_core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index 6c437d7a59ed..b7dfd0007aa0 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -885,15 +885,12 @@ static int adxl345_get_samples(struct adxl345_state *st)
  */
 static int adxl345_fifo_transfer(struct adxl345_state *st, int samples)
 {
-	size_t count;
 	int i, ret = 0;
 
-	/* count is the 3x the fifo_buf element size, hence 6B */
-	count = sizeof(st->fifo_buf[0]) * ADXL345_DIRS;
 	for (i = 0; i < samples; i++) {
-		/* read 3x 2 byte elements from base address into next fifo_buf position */
 		ret = regmap_bulk_read(st->regmap, ADXL345_REG_XYZ_BASE,
-				       st->fifo_buf + (i * count / 2), count);
+				       st->fifo_buf + (i * ADXL345_DIRS),
+				       sizeof(st->fifo_buf[0]) * ADXL345_DIRS);
 		if (ret)
 			return ret;
 
-- 
2.39.5


  parent reply	other threads:[~2025-07-02 23:03 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-02 23:03 [PATCH v11 0/8] iio: accel: adxl345: add interrupt based sensor events Lothar Rubusch
2025-07-02 23:03 ` [PATCH v11 1/8] iio: accel: adxl345: simplify interrupt mapping Lothar Rubusch
2025-07-06 16:10   ` Jonathan Cameron
2025-07-02 23:03 ` Lothar Rubusch [this message]
2025-07-06 16:11   ` [PATCH v11 2/8] iio: accel: adxl345: simplify reading the FIFO Jonathan Cameron
2025-07-02 23:03 ` [PATCH v11 3/8] iio: accel: adxl345: add activity event feature Lothar Rubusch
2025-07-03 14:24   ` Andy Shevchenko
2025-07-06 16:09     ` Jonathan Cameron
2025-07-20 18:36       ` Lothar Rubusch
2025-07-24 13:43         ` Jonathan Cameron
2025-07-02 23:03 ` [PATCH v11 4/8] iio: accel: adxl345: add inactivity feature Lothar Rubusch
2025-07-03 14:26   ` Andy Shevchenko
2025-07-03 14:59     ` Lothar Rubusch
2025-07-03 15:45       ` Andy Shevchenko
2025-07-06 12:08         ` Jonathan Cameron
2025-07-02 23:03 ` [PATCH v11 5/8] iio: accel: adxl345: add coupling detection for activity/inactivity Lothar Rubusch
2025-07-02 23:03 ` [PATCH v11 6/8] iio: accel: adxl345: extend inactivity time for less than 1s Lothar Rubusch
2025-07-02 23:03 ` [PATCH v11 7/8] docs: iio: add documentation for adxl345 driver Lothar Rubusch
2025-07-02 23:03 ` [PATCH v11 8/8] docs: iio: describe inactivity and free-fall detection on the ADXL345 Lothar Rubusch
2025-07-06 16:16   ` Jonathan Cameron
2025-07-20 18:49     ` Lothar Rubusch
2025-07-24 13:47       ` Jonathan Cameron

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