From 7bbe7813290df9fda0c175b7a703325720594912 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 1 Mar 2016 11:57:23 -0300 Subject: [PATCH] [media] v4l2: add device_caps to struct video_device Instead of letting drivers fill in device_caps at querycap time, let them fill it in when the video device is registered. This has the advantage that in the future the v4l2 core can access the video device's capabilities and take decisions based on that. Signed-off-by: Hans Verkuil Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-ioctl.c | 3 +++ include/media/v4l2-dev.h | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 170dd68d27f4..6bf5a3ecd126 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1020,9 +1020,12 @@ static int v4l_querycap(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_capability *cap = (struct v4l2_capability *)arg; + struct video_device *vfd = video_devdata(file); int ret; cap->version = LINUX_VERSION_CODE; + cap->device_caps = vfd->device_caps; + cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS; ret = ops->vidioc_querycap(file, fh, cap); diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index 76056ab5c5bd..25a3190308fb 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -92,6 +92,9 @@ struct video_device /* device ops */ const struct v4l2_file_operations *fops; + /* device capabilities as used in v4l2_capabilities */ + u32 device_caps; + /* sysfs */ struct device dev; /* v4l device */ struct cdev *cdev; /* character device */ -- 2.39.5