diff options
Diffstat (limited to 'include/media/v4l2-dev.h')
| -rw-r--r-- | include/media/v4l2-dev.h | 45 |
1 files changed, 40 insertions, 5 deletions
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index c7c40f1d262..eec6e460f64 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -24,7 +24,14 @@ #define VFL_TYPE_VBI 1 #define VFL_TYPE_RADIO 2 #define VFL_TYPE_SUBDEV 3 -#define VFL_TYPE_MAX 4 +#define VFL_TYPE_SDR 4 +#define VFL_TYPE_MAX 5 + +/* Is this a receiver, transmitter or mem-to-mem? */ +/* Ignored for VFL_TYPE_SUBDEV. */ +#define VFL_DIR_RX 0 +#define VFL_DIR_TX 1 +#define VFL_DIR_M2M 2 struct v4l2_ioctl_callbacks; struct video_device; @@ -62,6 +69,9 @@ struct v4l2_file_operations { unsigned int (*poll) (struct file *, struct poll_table_struct *); long (*ioctl) (struct file *, unsigned int, unsigned long); long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long); +#ifdef CONFIG_COMPAT + long (*compat_ioctl32) (struct file *, unsigned int, unsigned long); +#endif unsigned long (*get_unmapped_area) (struct file *, unsigned long, unsigned long, unsigned long, unsigned long); int (*mmap) (struct file *, struct vm_area_struct *); @@ -87,19 +97,23 @@ struct video_device struct device dev; /* v4l device */ struct cdev *cdev; /* character device */ - /* Set either parent or v4l2_dev if your driver uses v4l2_device */ - struct device *parent; /* device parent */ struct v4l2_device *v4l2_dev; /* v4l2_device parent */ + /* Only set parent if that can't be deduced from v4l2_dev */ + struct device *dev_parent; /* device parent */ /* Control handler associated with this device node. May be NULL. */ struct v4l2_ctrl_handler *ctrl_handler; + /* vb2_queue associated with this device node. May be NULL. */ + struct vb2_queue *queue; + /* Priority state. If NULL, then v4l2_dev->prio will be used. */ struct v4l2_prio_state *prio; /* device info */ char name[32]; - int vfl_type; + int vfl_type; /* device type */ + int vfl_dir; /* receiver, transmitter or m2m */ /* 'minor' is set to -1 if the registration failed */ int minor; u16 num; @@ -116,15 +130,16 @@ struct video_device /* Video standard vars */ v4l2_std_id tvnorms; /* Supported tv norms */ - v4l2_std_id current_norm; /* Current tvnorm */ /* callbacks */ void (*release)(struct video_device *vdev); /* ioctl callbacks */ const struct v4l2_ioctl_ops *ioctl_ops; + DECLARE_BITMAP(valid_ioctls, BASE_VIDIOC_PRIVATE); /* serialization lock */ + DECLARE_BITMAP(disable_locking, BASE_VIDIOC_PRIVATE); struct mutex *lock; }; @@ -170,6 +185,26 @@ void video_device_release(struct video_device *vdev); a dubious construction at best. */ void video_device_release_empty(struct video_device *vdev); +/* returns true if cmd is a known V4L2 ioctl */ +bool v4l2_is_known_ioctl(unsigned int cmd); + +/* mark that this command shouldn't use core locking */ +static inline void v4l2_disable_ioctl_locking(struct video_device *vdev, unsigned int cmd) +{ + if (_IOC_NR(cmd) < BASE_VIDIOC_PRIVATE) + set_bit(_IOC_NR(cmd), vdev->disable_locking); +} + +/* Mark that this command isn't implemented. This must be called before + video_device_register. See also the comments in determine_valid_ioctls(). + This function allows drivers to provide just one v4l2_ioctl_ops struct, but + disable ioctls based on the specific card that is actually found. */ +static inline void v4l2_disable_ioctl(struct video_device *vdev, unsigned int cmd) +{ + if (_IOC_NR(cmd) < BASE_VIDIOC_PRIVATE) + set_bit(_IOC_NR(cmd), vdev->valid_ioctls); +} + /* helper functions to access driver private data. */ static inline void *video_get_drvdata(struct video_device *vdev) { |