Instead of restarting the R-Car CSI-2 receiver if a transmission error
is detected inform the R-Car VIN driver of the error so it can stop the
whole pipeline and inform user-space. This is done to reflect a updated
usage recommendation in later versions of the datasheet.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
drivers/media/platform/rcar-vin/rcar-csi2.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
index 945d2eb8723367f0..a7212ecc46572a3b 100644
--- a/drivers/media/platform/rcar-vin/rcar-csi2.c
+++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
@@ -773,21 +773,19 @@ static irqreturn_t rcsi2_irq(int irq, void *data)
rcsi2_write(priv, INTERRSTATE_REG, err_status);
- dev_info(priv->dev, "Transfer error, restarting CSI-2 receiver\n");
-
return IRQ_WAKE_THREAD;
}
static irqreturn_t rcsi2_irq_thread(int irq, void *data)
{
struct rcar_csi2 *priv = data;
+ struct v4l2_event event = {
+ .type = V4L2_EVENT_EOS,
+ };
- mutex_lock(&priv->lock);
- rcsi2_stop(priv);
- usleep_range(1000, 2000);
- if (rcsi2_start(priv))
- dev_warn(priv->dev, "Failed to restart CSI-2 receiver\n");
- mutex_unlock(&priv->lock);
+ dev_err(priv->dev, "Transfer error detected.\n");
+
+ v4l2_subdev_notify_event(&priv->subdev, &event);
return IRQ_HANDLED;
}
--
2.30.0
