From 6a52883becfa35e6d49fd0ae00cacbe09f850d95 Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Thu, 16 Jan 2025 18:24:17 +0000 Subject: [PATCH] media: hevc_dec: Add module parameter for video_nr To avoid user complaints that /dev/video0 isn't their USB webcam, add downstream patch that allows setting the preferred video device number. Signed-off-by: Dave Stevenson --- drivers/media/platform/raspberrypi/hevc_dec/hevc_d.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/raspberrypi/hevc_dec/hevc_d.c b/drivers/media/platform/raspberrypi/hevc_dec/hevc_d.c index 9e90532a3d264c..dee978882f82f9 100644 --- a/drivers/media/platform/raspberrypi/hevc_dec/hevc_d.c +++ b/drivers/media/platform/raspberrypi/hevc_dec/hevc_d.c @@ -25,6 +25,15 @@ #include "hevc_d_video.h" #include "hevc_d_hw.h" +/* + * Default /dev/videoN node number. + * Deliberately avoid the very low numbers as these are often taken by webcams + * etc, and simple apps tend to only go for /dev/video0. + */ +static int video_nr = 19; +module_param(video_nr, int, 0644); +MODULE_PARM_DESC(video_nr, "decoder video device number"); + static const struct hevc_d_control hevc_d_ctrls[] = { { .cfg = { @@ -373,7 +382,7 @@ static int hevc_d_probe(struct platform_device *pdev) dev->mdev.ops = &hevc_d_m2m_media_ops; dev->v4l2_dev.mdev = &dev->mdev; - ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); + ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr); if (ret) { v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); goto err_m2m;