iio: accel: adxl345: introduce adxl345_push_event function

Move the fifo handling into a separate function. This is a preparation
for a generic handling of the interrupt status register results. The
function is supposed to handle particular sensor events, and later to
forward them to the iio channel. This is needed to read out the interrupt
status register.

The function shall return occurring errors, if any, or 0 in case of
handled events or read fifo content. Thus migrate fifo read-out and push
fifo content to iio channels into this function to be built up with
additional event handling.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Link: https://patch.msgid.link/20250414184245.100280-2-l.rubusch@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index d31c5a024487873f622645b85d93b3cf7ad9e3e3..78214917134794f9e1cf029636bc632fd11a864c 100644 (file)
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -416,6 +416,23 @@ static int adxl345_fifo_push(struct iio_dev *indio_dev,
        return 0;
 }
 
+static int adxl345_push_event(struct iio_dev *indio_dev, int int_stat)
+{
+       struct adxl345_state *st = iio_priv(indio_dev);
+       int samples;
+
+       if (FIELD_GET(ADXL345_INT_WATERMARK, int_stat)) {
+               samples = adxl345_get_samples(st);
+               if (samples < 0)
+                       return -EINVAL;
+
+               if (adxl345_fifo_push(indio_dev, samples) < 0)
+                       return -EINVAL;
+       }
+
+       return 0;
+}
+
 /**
  * adxl345_irq_handler() - Handle irqs of the ADXL345.
  * @irq: The irq being handled.
@@ -428,19 +445,12 @@ static irqreturn_t adxl345_irq_handler(int irq, void *p)
        struct iio_dev *indio_dev = p;
        struct adxl345_state *st = iio_priv(indio_dev);
        int int_stat;
-       int samples;
 
        if (regmap_read(st->regmap, ADXL345_REG_INT_SOURCE, &int_stat))
                return IRQ_NONE;
 
-       if (FIELD_GET(ADXL345_INT_WATERMARK, int_stat)) {
-               samples = adxl345_get_samples(st);
-               if (samples < 0)
-                       goto err;
-
-               if (adxl345_fifo_push(indio_dev, samples) < 0)
-                       goto err;
-       }
+       if (adxl345_push_event(indio_dev, int_stat))
+               goto err;
 
        if (FIELD_GET(ADXL345_INT_OVERRUN, int_stat))
                goto err;