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[87.92.218.151]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-393f60db4dasm17810681fa.20.2026.05.10.01.26.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2026 01:26:03 -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 2/5] iio: accel: adxl380: Add timestamp to FIFO data Date: Sun, 10 May 2026 11:25:53 +0300 Message-ID: <20260510082556.3867-3-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/adxl380.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/iio/accel/adxl380.c b/drivers/iio/accel/adxl380.c index e7bb32fbc4..b8d0d15b00 100644 --- a/drivers/iio/accel/adxl380.c +++ b/drivers/iio/accel/adxl380.c @@ -224,6 +224,10 @@ struct adxl380_state { int hpf_tbl[7][2]; __be16 fifo_buf[ADXL380_FIFO_SAMPLES] __aligned(IIO_DMA_MINALIGN); + struct { + __be16 channels[4]; + aligned_s64 ts; + } scan; }; bool adxl380_readable_noinc_reg(struct device *dev, unsigned int reg) @@ -948,6 +952,7 @@ static irqreturn_t adxl380_irq_handler(int irq, void *p) struct adxl380_state *st = iio_priv(indio_dev); u8 status0, status1; u16 fifo_entries; + s64 ts; int i; int ret; @@ -957,7 +962,8 @@ static irqreturn_t adxl380_irq_handler(int irq, void *p) if (ret) return IRQ_HANDLED; - adxl380_push_event(indio_dev, iio_get_time_ns(indio_dev), status1); + ts = iio_get_time_ns(indio_dev); + adxl380_push_event(indio_dev, ts, status1); if (!FIELD_GET(ADXL380_STATUS_0_FIFO_WM_MSK, status0)) return IRQ_HANDLED; @@ -971,8 +977,11 @@ static irqreturn_t adxl380_irq_handler(int irq, void *p) sizeof(*st->fifo_buf) * fifo_entries); if (ret) return IRQ_HANDLED; - for (i = 0; i < fifo_entries; i += st->fifo_set_size) - iio_push_to_buffers(indio_dev, &st->fifo_buf[i]); + for (i = 0; i < fifo_entries; i += st->fifo_set_size) { + 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); + } return IRQ_HANDLED; } -- 2.54.0.windows.1