--- /dev/null
+/*
+ *
+ * V 4 L 2 D R I V E R H E L P E R A P I
+ *
+ * Moved from videodev2.h
+ *
+ * Some commonly needed functions for drivers (v4l2-common.o module)
+ */
+#ifndef _V4L2_DEV_H
+#define _V4L2_DEV_H
+
+#define OBSOLETE_OWNER 1 /* to be removed soon */
+
+#include <linux/poll.h>
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/compiler.h> /* need __user */
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+#include <linux/videodev.h>
+#else
+#include <linux/videodev2.h>
+#endif
+
+#include <linux/fs.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
+
+/* Video standard functions */
+extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs);
+extern int v4l2_video_std_construct(struct v4l2_standard *vs,
+ int id, char *name);
+
+/* prority handling */
+struct v4l2_prio_state {
+ atomic_t prios[4];
+};
+int v4l2_prio_init(struct v4l2_prio_state *global);
+int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,
+ enum v4l2_priority new);
+int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local);
+int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local);
+enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global);
+int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local);
+
+/* names for fancy debug output */
+extern char *v4l2_field_names[];
+extern char *v4l2_type_names[];
+
+/* Compatibility layer interface -- v4l1-compat module */
+typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg);
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
+ int cmd, void *arg, v4l2_kioctl driver_ioctl);
+#else
+#define v4l_compat_translate_ioctl(inode,file,cmd,arg,ioctl) -EINVAL
+#endif
+
+/* 32 Bits compatibility layer for 64 bits processors */
+extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
+ unsigned long arg);
+
+/*
+ * Newer version of video_device, handled by videodev2.c
+ * This version moves redundant code from video device code to
+ * the common handler
+ */
+struct v4l2_tvnorm {
+ char *name;
+ v4l2_std_id id;
+
+ void *priv_data;
+};
+
+struct video_device
+{
+ /* device ops */
+ const struct file_operations *fops;
+
+ /* device info */
+ struct device *dev;
+ char name[32];
+ int type; /* v4l1 */
+ int type2; /* v4l2 */
+ int hardware;
+ int minor;
+
+ int debug; /* Activates debug level*/
+
+ /* Video standard vars */
+ int tvnormsize; /* Size of tvnorm array */
+ v4l2_std_id current_norm; /* Current tvnorm */
+ struct v4l2_tvnorm *tvnorms;
+
+ /* callbacks */
+ void (*release)(struct video_device *vfd);
+
+ /* ioctl callbacks */
+
+ /* VIDIOC_QUERYCAP handler */
+ int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
+
+ /* Priority handling */
+ int (*vidioc_g_priority) (struct file *file, void *fh,
+ enum v4l2_priority *p);
+ int (*vidioc_s_priority) (struct file *file, void *fh,
+ enum v4l2_priority p);
+
+ /* VIDIOC_ENUM_FMT handlers */
+ int (*vidioc_enum_fmt_cap) (struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+ int (*vidioc_enum_fmt_overlay) (struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+ int (*vidioc_enum_fmt_vbi) (struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+ int (*vidioc_enum_fmt_vbi_capture) (struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+ int (*vidioc_enum_fmt_video_output)(struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+ int (*vidioc_enum_fmt_vbi_output) (struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+ int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,
+ struct v4l2_fmtdesc *f);
+
+ /* VIDIOC_G_FMT handlers */
+ int (*vidioc_g_fmt_cap) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_g_fmt_overlay) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_g_fmt_vbi) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_g_fmt_vbi_output) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_g_fmt_vbi_capture)(struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_g_fmt_video_output)(struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,
+ struct v4l2_format *f);
+
+ /* VIDIOC_S_FMT handlers */
+ int (*vidioc_s_fmt_cap) (struct file *file, void *fh,
+ struct v4l2_format *f);
+
+ int (*vidioc_s_fmt_overlay) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_s_fmt_vbi) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_s_fmt_vbi_output) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_s_fmt_vbi_capture)(struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_s_fmt_video_output)(struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,
+ struct v4l2_format *f);
+
+ /* VIDIOC_TRY_FMT handlers */
+ int (*vidioc_try_fmt_cap) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_try_fmt_overlay) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_try_fmt_vbi) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_try_fmt_vbi_output) (struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_try_fmt_vbi_capture)(struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_try_fmt_video_output)(struct file *file, void *fh,
+ struct v4l2_format *f);
+ int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,
+ struct v4l2_format *f);
+
+ /* Buffer handlers */
+ int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
+ int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
+ int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
+ int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
+
+
+ int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ /* buffer type is struct vidio_mbuf * */
+ int (*vidiocgmbuf) (struct file *file, void *fh, struct video_mbuf *p);
+#endif
+ int (*vidioc_g_fbuf) (struct file *file, void *fh,
+ struct v4l2_framebuffer *a);
+ int (*vidioc_s_fbuf) (struct file *file, void *fh,
+ struct v4l2_framebuffer *a);
+
+ /* Stream on/off */
+ int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
+ int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
+
+ /* Standard handling
+ G_STD and ENUMSTD are handled by videodev.c
+ */
+ int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id a);
+ int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
+
+ /* Input handling */
+ int (*vidioc_enum_input)(struct file *file, void *fh,
+ struct v4l2_input *inp);
+ int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i);
+ int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i);
+
+ /* Output handling */
+ int (*vidioc_enumoutput) (struct file *file, void *fh,
+ struct v4l2_output *a);
+ int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i);
+ int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i);
+
+ /* Control handling */
+ int (*vidioc_queryctrl) (struct file *file, void *fh,
+ struct v4l2_queryctrl *a);
+ int (*vidioc_g_ctrl) (struct file *file, void *fh,
+ struct v4l2_control *a);
+ int (*vidioc_s_ctrl) (struct file *file, void *fh,
+ struct v4l2_control *a);
+ int (*vidioc_g_ext_ctrls) (struct file *file, void *fh,
+ struct v4l2_ext_controls *a);
+ int (*vidioc_s_ext_ctrls) (struct file *file, void *fh,
+ struct v4l2_ext_controls *a);
+ int (*vidioc_try_ext_ctrls) (struct file *file, void *fh,
+ struct v4l2_ext_controls *a);
+ int (*vidioc_querymenu) (struct file *file, void *fh,
+ struct v4l2_querymenu *a);
+
+ /* Audio ioctls */
+ int (*vidioc_enumaudio) (struct file *file, void *fh,
+ struct v4l2_audio *a);
+ int (*vidioc_g_audio) (struct file *file, void *fh,
+ struct v4l2_audio *a);
+ int (*vidioc_s_audio) (struct file *file, void *fh,
+ struct v4l2_audio *a);
+
+ /* Audio out ioctls */
+ int (*vidioc_enumaudout) (struct file *file, void *fh,
+ struct v4l2_audioout *a);
+ int (*vidioc_g_audout) (struct file *file, void *fh,
+ struct v4l2_audioout *a);
+ int (*vidioc_s_audout) (struct file *file, void *fh,
+ struct v4l2_audioout *a);
+ int (*vidioc_g_modulator) (struct file *file, void *fh,
+ struct v4l2_modulator *a);
+ int (*vidioc_s_modulator) (struct file *file, void *fh,
+ struct v4l2_modulator *a);
+ /* Crop ioctls */
+ int (*vidioc_cropcap) (struct file *file, void *fh,
+ struct v4l2_cropcap *a);
+ int (*vidioc_g_crop) (struct file *file, void *fh,
+ struct v4l2_crop *a);
+ int (*vidioc_s_crop) (struct file *file, void *fh,
+ struct v4l2_crop *a);
+ /* Compression ioctls */
+ int (*vidioc_g_mpegcomp) (struct file *file, void *fh,
+ struct v4l2_mpeg_compression *a);
+ int (*vidioc_s_mpegcomp) (struct file *file, void *fh,
+ struct v4l2_mpeg_compression *a);
+ int (*vidioc_g_jpegcomp) (struct file *file, void *fh,
+ struct v4l2_jpegcompression *a);
+ int (*vidioc_s_jpegcomp) (struct file *file, void *fh,
+ struct v4l2_jpegcompression *a);
+
+ /* Stream type-dependent parameter ioctls */
+ int (*vidioc_g_parm) (struct file *file, void *fh,
+ struct v4l2_streamparm *a);
+ int (*vidioc_s_parm) (struct file *file, void *fh,
+ struct v4l2_streamparm *a);
+
+ /* Tuner ioctls */
+ int (*vidioc_g_tuner) (struct file *file, void *fh,
+ struct v4l2_tuner *a);
+ int (*vidioc_s_tuner) (struct file *file, void *fh,
+ struct v4l2_tuner *a);
+ int (*vidioc_g_frequency) (struct file *file, void *fh,
+ struct v4l2_frequency *a);
+ int (*vidioc_s_frequency) (struct file *file, void *fh,
+ struct v4l2_frequency *a);
+
+ /* Sliced VBI cap */
+ int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
+ struct v4l2_sliced_vbi_cap *a);
+
+ /* Log status ioctl */
+ int (*vidioc_log_status) (struct file *file, void *fh);
+
+
+#ifdef OBSOLETE_OWNER /* to be removed soon */
+/* obsolete -- fops->owner is used instead */
+struct module *owner;
+/* dev->driver_data will be used instead some day.
+ * Use the video_{get|set}_drvdata() helper functions,
+ * so the switch over will be transparent for you.
+ * Or use {pci|usb}_{get|set}_drvdata() directly. */
+void *priv;
+#endif
+
+ /* for videodev.c intenal usage -- please don't touch */
+ int users; /* video_exclusive_{open|close} ... */
+ struct mutex lock; /* ... helper function uses these */
+ struct class_device class_dev; /* sysfs */
+};
+
+/* Version 2 functions */
+extern int video_register_device(struct video_device *vfd, int type, int nr);
+void video_unregister_device(struct video_device *);
+extern int video_ioctl2(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg);
+
+/* helper functions to alloc / release struct video_device, the
+ later can be used for video_device->release() */
+struct video_device *video_device_alloc(void);
+void video_device_release(struct video_device *vfd);
+
+/* Include support for obsoleted stuff */
+extern int video_usercopy(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg,
+ int (*func)(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg));
+
+
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+#include <linux/mm.h>
+
+extern struct video_device* video_devdata(struct file*);
+
+#define to_video_device(cd) container_of(cd, struct video_device, class_dev)
+static inline int
+video_device_create_file(struct video_device *vfd,
+ struct class_device_attribute *attr)
+{
+ int ret = class_device_create_file(&vfd->class_dev, attr);
+ if (ret < 0)
+ printk(KERN_WARNING "%s error: %d\n", __FUNCTION__, ret);
+ return ret;
+}
+static inline void
+video_device_remove_file(struct video_device *vfd,
+ struct class_device_attribute *attr)
+{
+ class_device_remove_file(&vfd->class_dev, attr);
+}
+
+#endif /* CONFIG_VIDEO_V4L1_COMPAT */
+
+#ifdef OBSOLETE_OWNER /* to be removed soon */
+/* helper functions to access driver private data. */
+static inline void *video_get_drvdata(struct video_device *dev)
+{
+ return dev->priv;
+}
+
+static inline void video_set_drvdata(struct video_device *dev, void *data)
+{
+ dev->priv = data;
+}
+#endif
+
+extern int video_exclusive_open(struct inode *inode, struct file *file);
+extern int video_exclusive_release(struct inode *inode, struct file *file);
+
+#endif /* _V4L2_DEV_H */
git://git.onelab.eu / linux-2.6.git / blobdiff