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[87.92.218.151]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-393f60db4dasm17810681fa.20.2026.05.10.01.26.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2026 01:26:02 -0700 (PDT) From: Md Shofiqul Islam To: jic23@kernel.org Cc: lars@metafoo.de, Michael.Hennerich@analog.com, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Md Shofiqul Islam Subject: [PATCH 1/5] iio: accel: adxl372: Add timestamp to FIFO data Date: Sun, 10 May 2026 11:25:52 +0300 Message-ID: <20260510082556.3867-2-shofiqtest@gmail.com> X-Mailer: git-send-email 2.54.0.windows.1 In-Reply-To: <20260510082556.3867-1-shofiqtest@gmail.com> References: <20260510082556.3867-1-shofiqtest@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The driver pushes FIFO samples using iio_push_to_buffers() which does not attach a hardware timestamp to the data. Add a scan buffer struct with an aligned_s64 timestamp field to the driver state, capture a single timestamp per IRQ with iio_get_time_ns(), and switch the FIFO push loop to iio_push_to_buffers_with_timestamp(). The same timestamp is reused for the event push call in the same handler, replacing the duplicate iio_get_time_ns() invocation there. Signed-off-by: Md Shofiqul Islam --- drivers/iio/accel/adxl372.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c index 545a21e5a3..521e8313b1 100644 --- a/drivers/iio/accel/adxl372.c +++ b/drivers/iio/accel/adxl372.c @@ -367,6 +367,10 @@ struct adxl372_state { u16 watermark; __be16 fifo_buf[ADXL372_FIFO_SIZE]; bool peak_fifo_mode_en; + struct { + __be16 channels[3]; + aligned_s64 ts; + } scan; struct mutex threshold_m; /* lock for threshold */ }; @@ -703,13 +707,15 @@ static irqreturn_t adxl372_trigger_handler(int irq, void *p) struct adxl372_state *st = iio_priv(indio_dev); u8 status1, status2; u16 fifo_entries; + s64 ts; int i, ret; ret = adxl372_get_status(st, &status1, &status2, &fifo_entries); if (ret < 0) goto err; - adxl372_push_event(indio_dev, iio_get_time_ns(indio_dev), status2); + ts = iio_get_time_ns(indio_dev); + adxl372_push_event(indio_dev, ts, status2); if (st->fifo_mode != ADXL372_FIFO_BYPASSED && ADXL372_STATUS_1_FIFO_FULL(status1)) { @@ -733,7 +739,10 @@ static irqreturn_t adxl372_trigger_handler(int irq, void *p) /* filter peak detection data */ if (st->peak_fifo_mode_en) adxl372_arrange_axis_data(st, &st->fifo_buf[i]); - iio_push_to_buffers(indio_dev, &st->fifo_buf[i]); + memcpy(st->scan.channels, &st->fifo_buf[i], + st->fifo_set_size * sizeof(__be16)); + iio_push_to_buffers_with_timestamp(indio_dev, + &st->scan, ts); } } err: -- 2.54.0.windows.1