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Date: Fri, 9 Sep 2022 15:39:51 +0200 From: Paul Kocialkowski <paul.kocialkowski@...tlin.com> To: linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org Cc: Paul Kocialkowski <paul.kocialkowski@...tlin.com>, Mauro Carvalho Chehab <mchehab@...nel.org>, Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>, Samuel Holland <samuel@...lland.org>, Hans Verkuil <hverkuil-cisco@...all.nl>, Maxime Ripard <mripard@...nel.org>, Thomas Petazzoni <thomas.petazzoni@...tlin.com>, Laurent Pinchart <laurent.pinchart@...asonboard.com> Subject: [PATCH 1/4] media: sun6i-mipi-csi2: Require both pads to be connected for streaming The bridge needs both its pads connected to be able to stream data. Enforcing this is useful to produce an error when no sensor is connected. Fixes: af54b4f4c17f ("media: sunxi: Add support for the A31 MIPI CSI-2 controller") Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com> --- .../media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c index 30d6c0c5161f..340380a5f66f 100644 --- a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c +++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c @@ -519,8 +519,10 @@ static int sun6i_mipi_csi2_bridge_setup(struct sun6i_mipi_csi2_device *csi2_dev) /* Media Pads */ - pads[SUN6I_MIPI_CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK; - pads[SUN6I_MIPI_CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + pads[SUN6I_MIPI_CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK | + MEDIA_PAD_FL_MUST_CONNECT; + pads[SUN6I_MIPI_CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE | + MEDIA_PAD_FL_MUST_CONNECT; ret = media_entity_pads_init(&subdev->entity, SUN6I_MIPI_CSI2_PAD_COUNT, pads); -- 2.37.3
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