Re: [PATCH v2 10/18] media: cadence: csi2rx: Populate subdev devnode
From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Date: 2021-05-28 07:17:08
Also in:
dmaengine, linux-media, linux-phy, lkml
On 26/05/2021 18:23, Pratyush Yadav wrote:
quoted hunk ↗ jump to hunk
The devnode can be used by media-ctl and other userspace tools to perform configurations on the subdev. Without it, media-ctl returns ENOENT when setting format on the sensor subdev. Signed-off-by: Pratyush Yadav <redacted> --- (no changes since v1) drivers/media/platform/cadence/cdns-csi2rx.c | 1 + 1 file changed, 1 insertion(+)diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c index 1df21f462f3c..49bed63d5faa 100644 --- a/drivers/media/platform/cadence/cdns-csi2rx.c +++ b/drivers/media/platform/cadence/cdns-csi2rx.c@@ -613,6 +613,7 @@ static int csi2rx_probe(struct platform_device *pdev) csi2rx->pads[CSI2RX_PAD_SINK].flags = MEDIA_PAD_FL_SINK; for (i = CSI2RX_PAD_SOURCE_STREAM0; i < CSI2RX_PAD_MAX; i++) csi2rx->pads[i].flags = MEDIA_PAD_FL_SOURCE; + csi2rx->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ret = media_entity_pads_init(&csi2rx->subdev.entity, CSI2RX_PAD_MAX, csi2rx->pads);
I don't understand this one. There's nothing to configure in cdns-csi2rx from userspace, as far as I can see, so why is the dev node needed? And why would the lack of csi2rx dev node cause sensor subdev config to fail? Tomi