linux-kernel - [PATCH v2 2/6] media: vsp1: Clean FRE interrupt status

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Message-Id: <20250224-v4h-iif-v2-2-0305e3c1fe2d@ideasonboard.com>
Date: Mon, 24 Feb 2025 21:19:42 +0100
From: Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
 Niklas Söderlund <niklas.soderlund@...natech.se>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, 
 Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>
Subject: [PATCH v2 2/6] media: vsp1: Clean FRE interrupt status

The VSPX generates "FRame End" (FRE) interrutps, one for each
buffer transferred to the ISP.

Even if the FRE interrupt is not enabled, it is reported as active
in the interrupt status register.

Make sure to clean it when handling the interrupt.

Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>
---
 drivers/media/platform/renesas/vsp1/vsp1_drv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drv.c b/drivers/media/platform/renesas/vsp1/vsp1_drv.c
index d13e9b31aa7cff8610ea196ae4de88ab22e44e0f..17ace4c6844d19aaafc27e79f016cc05091372bf 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_drv.c
@@ -69,7 +69,8 @@ static irqreturn_t vsp1_irq_handler(int irq, void *data)
 				i, wpf->entity.pipe->underrun_count);
 		}
 
-		if (status & VI6_WPF_IRQ_STA_DFE) {
+		if (status & VI6_WPF_IRQ_STA_DFE ||
+		    status & VI6_WPF_IRQ_STA_FRE) {
 			vsp1_pipeline_frame_end(wpf->entity.pipe);
 			ret = IRQ_HANDLED;
 		}

-- 
2.48.1