From: Svyatoslav Ryhel Date: Tue, 3 Mar 2026 08:42:26 +0000 (+0200) Subject: staging: media: tegra-video: vi: add flip controls only if no source controls are... X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c9f5dc5210b0cbcf5582c8e1484659da376807f;p=thirdparty%2Fkernel%2Fstable.git staging: media: tegra-video: vi: add flip controls only if no source controls are provided Because the current Tegra video driver is video-centric, it exposes all controls via /dev/video. If both the camera sensor and the VI provide hflip and vflip, the driver will fail because only one control is allowed. To address this, hflip and vflip should be added from the SoC only if the camera sensor doesn't provide those controls. Tested-by: Luca Ceresoli # tegra20, parallel camera Signed-off-by: Svyatoslav Ryhel Signed-off-by: Hans Verkuil --- diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c index e0961bc0a017..19eebfdae221 100644 --- a/drivers/staging/media/tegra-video/vi.c +++ b/drivers/staging/media/tegra-video/vi.c @@ -962,6 +962,7 @@ static int tegra_channel_setup_ctrl_handler(struct tegra_vi_channel *chan) } #else struct v4l2_subdev *subdev; + struct v4l2_ctrl *hflip, *vflip; /* custom control */ v4l2_ctrl_new_custom(&chan->ctrl_handler, &syncpt_timeout_ctrl, NULL); @@ -987,11 +988,13 @@ static int tegra_channel_setup_ctrl_handler(struct tegra_vi_channel *chan) return ret; } - if (chan->vi->soc->has_h_v_flip) { + hflip = v4l2_ctrl_find(subdev->ctrl_handler, V4L2_CID_HFLIP); + if (chan->vi->soc->has_h_v_flip && !hflip) v4l2_ctrl_new_std(&chan->ctrl_handler, &vi_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); - v4l2_ctrl_new_std(&chan->ctrl_handler, &vi_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); - } + vflip = v4l2_ctrl_find(subdev->ctrl_handler, V4L2_CID_VFLIP); + if (chan->vi->soc->has_h_v_flip && !vflip) + v4l2_ctrl_new_std(&chan->ctrl_handler, &vi_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); #endif /* setup the controls */