V4L/DVB (11034): soc-camera: remove now unused gpio member of struct soc_camera_link

[safe/jmp/linux-2.6] / include / media / v4l2-dev.h

diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index fb92e3d..e36faab 100644 (file)
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -12,27 +12,38 @@
 #include <linux/poll.h>
 #include <linux/fs.h>
 #include <linux/device.h>
+#include <linux/cdev.h>
 #include <linux/mutex.h>
 #include <linux/videodev2.h>
 
 #define VIDEO_MAJOR    81
 
-/* Minor device allocation */
-#define MINOR_VFL_TYPE_GRABBER_MIN   0
-#define MINOR_VFL_TYPE_GRABBER_MAX  63
-#define MINOR_VFL_TYPE_RADIO_MIN    64
-#define MINOR_VFL_TYPE_RADIO_MAX   127
-#define MINOR_VFL_TYPE_VTX_MIN     192
-#define MINOR_VFL_TYPE_VTX_MAX     223
-#define MINOR_VFL_TYPE_VBI_MIN     224
-#define MINOR_VFL_TYPE_VBI_MAX     255
-
 #define VFL_TYPE_GRABBER       0
 #define VFL_TYPE_VBI           1
 #define VFL_TYPE_RADIO         2
 #define VFL_TYPE_VTX           3
+#define VFL_TYPE_MAX           4
 
 struct v4l2_ioctl_callbacks;
+struct video_device;
+struct v4l2_device;
+
+/* Flag to mark the video_device struct as unregistered.
+   Drivers can set this flag if they want to block all future
+   device access. It is set by video_unregister_device. */
+#define V4L2_FL_UNREGISTERED   (0)
+
+struct v4l2_file_operations {
+       struct module *owner;
+       ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
+       ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
+       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);
+       int (*mmap) (struct file *, struct vm_area_struct *);
+       int (*open) (struct file *);
+       int (*release) (struct file *);
+};
 
 /*
  * Newer version of video_device, handled by videodev2.c
@@ -43,16 +54,24 @@ struct v4l2_ioctl_callbacks;
 struct video_device
 {
        /* device ops */
-       const struct file_operations *fops;
+       const struct v4l2_file_operations *fops;
 
        /* sysfs */
        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 */
 
        /* device info */
        char name[32];
        int vfl_type;
+       /* 'minor' is set to -1 if the registration failed */
        int minor;
+       u16 num;
+       /* use bitops to set/clear/test flags */
+       unsigned long flags;
        /* attribute to differentiate multiple indices on one physical device */
        int index;
 
@@ -63,7 +82,7 @@ struct video_device
        v4l2_std_id current_norm;       /* Current tvnorm */
 
        /* callbacks */
-       void (*release)(struct video_device *vfd);
+       void (*release)(struct video_device *vdev);
 
        /* ioctl callbacks */
        const struct v4l2_ioctl_ops *ioctl_ops;
@@ -72,36 +91,41 @@ struct video_device
 /* dev to video-device */
 #define to_video_device(cd) container_of(cd, struct video_device, dev)
 
-/* Register and unregister devices. Note that if video_register_device fails,
+/* Register video devices. Note that if video_register_device fails,
    the release() callback of the video_device structure is *not* called, so
    the caller is responsible for freeing any data. Usually that means that
-   you call video_device_release() on failure. */
-int __must_check video_register_device(struct video_device *vfd, int type, int nr);
-int __must_check video_register_device_index(struct video_device *vfd,
+   you call video_device_release() on failure.
+
+   Also note that vdev->minor is set to -1 if the registration failed. */
+int __must_check video_register_device(struct video_device *vdev, int type, int nr);
+int __must_check video_register_device_index(struct video_device *vdev,
                                                int type, int nr, int index);
-void video_unregister_device(struct video_device *vfd);
+
+/* Unregister video devices. Will do nothing if vdev == NULL or
+   vdev->minor < 0. */
+void video_unregister_device(struct video_device *vdev);
 
 /* helper functions to alloc/release struct video_device, the
    latter can also be used for video_device->release(). */
 struct video_device * __must_check video_device_alloc(void);
 
-/* this release function frees the vfd pointer */
-void video_device_release(struct video_device *vfd);
+/* this release function frees the vdev pointer */
+void video_device_release(struct video_device *vdev);
 
 /* this release function does nothing, use when the video_device is a
    static global struct. Note that having a static video_device is
    a dubious construction at best. */
-void video_device_release_empty(struct video_device *vfd);
+void video_device_release_empty(struct video_device *vdev);
 
 /* helper functions to access driver private data. */
-static inline void *video_get_drvdata(struct video_device *dev)
+static inline void *video_get_drvdata(struct video_device *vdev)
 {
-       return dev_get_drvdata(&dev->dev);
+       return dev_get_drvdata(&vdev->dev);
 }
 
-static inline void video_set_drvdata(struct video_device *dev, void *data)
+static inline void video_set_drvdata(struct video_device *vdev, void *data)
 {
-       dev_set_drvdata(&dev->dev, data);
+       dev_set_drvdata(&vdev->dev, data);
 }
 
 struct video_device *video_devdata(struct file *file);
@@ -113,4 +137,9 @@ static inline void *video_drvdata(struct file *file)
        return video_get_drvdata(video_devdata(file));
 }
 
+static inline int video_is_unregistered(struct video_device *vdev)
+{
+       return test_bit(V4L2_FL_UNREGISTERED, &vdev->flags);
+}
+
 #endif /* _V4L2_DEV_H */