linux-kernel - [PATCH DNI 25/26] media: pisp_be: Register devnode to userspace

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Message-Id: <20250717-multicontext-mainline-2025-v1-25-81ac18979c03@ideasonboard.com>
Date: Thu, 17 Jul 2025 12:45:51 +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 25/26] media: pisp_be: Register devnode to userspace

To set formats on the subdev, we need to have the devnode registered to
userspace.

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

diff --git a/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c b/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
index 2a8c09a9c70952c9f99e542271e994d62392c617..df3cdd81843376abf98bb184cde74d4d66b0ecfe 100644
--- a/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
+++ b/drivers/media/platform/raspberrypi/pisp_be/pisp_be.c
@@ -1635,6 +1635,7 @@ static int pispbe_init_subdev(struct pispbe_dev *pispbe)
 	v4l2_subdev_init(sd, &pispbe_sd_ops);
 	sd->internal_ops = &pispbe_subdev_internal_ops;
 	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
+	sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
 	sd->entity.ops = &pispbe_subdev_entity_ops;
 	sd->owner = THIS_MODULE;
 	sd->dev = pispbe->dev;
@@ -1658,7 +1659,7 @@ static int pispbe_init_subdev(struct pispbe_dev *pispbe)
 	if (ret)
 		goto error;
 
-	return 0;
+	return v4l2_device_register_subdev_nodes(&pispbe->v4l2_dev);
 
 error:
 	media_entity_cleanup(&sd->entity);

-- 
2.49.0