linux-kernel - [PATCH DNI 21/26] media: pisp_be: Start and stop the media pipeline

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Message-Id: <20250717-multicontext-mainline-2025-v1-21-81ac18979c03@ideasonboard.com>
Date: Thu, 17 Jul 2025 12:45:47 +0200
From: Jacopo Mondi <jacopo.mondi@...asonboard.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
 Kieran Bingham <kieran.bingham@...asonboard.com>, 
 Nicolas Dufresne <nicolas.dufresne@...labora.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Tomasz Figa <tfiga@...omium.org>, 
 Marek Szyprowski <m.szyprowski@...sung.com>, 
 Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Hans Verkuil <hverkuil@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, 
 linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 Jacopo Mondi <jacopo.mondi@...asonboard.com>
Subject: [PATCH DNI 21/26] media: pisp_be: Start and stop the media
 pipeline

Call video_device_pipeline_alloc_start() and
video_device_pipeline_stop() at streaming start/stop time for all
video nodes.

Signed-off-by: Jacopo Mondi <jacopo.mondi@...asonboard.com>
---
 drivers/media/platform/raspberrypi/pisp_be/pisp_be.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c b/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
index b30891718d8df9c48ce1b83ad9fcafb201105625..423cb21298309c2ba51214b129fbf6e875370c98 100644
--- a/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
+++ b/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
@@ -878,6 +878,10 @@ static int pispbe_node_start_streaming(struct vb2_queue *q, unsigned int count)
 	if (ret < 0)
 		goto err_return_buffers;
 
+	ret = video_device_pipeline_alloc_start(&node->vfd);
+	if (ret)
+		goto err_return_buffers;
+
 	scoped_guard(spinlock_irq, &pispbe->hw_lock) {
 		node->pispbe->streaming_map |=  BIT(node->id);
 		node->pispbe->sequence = 0;
@@ -933,6 +937,8 @@ static void pispbe_node_stop_streaming(struct vb2_queue *q)
 
 	vb2_wait_for_all_buffers(&node->queue);
 
+	video_device_pipeline_stop(&node->vfd);
+
 	spin_lock_irq(&pispbe->hw_lock);
 	pispbe->streaming_map &= ~BIT(node->id);
 

-- 
2.49.0