/* * * 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_IOCTL_H #define _V4L2_IOCTL_H #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 struct v4l2_ioctl_ops { /* 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_vid_cap) (struct file *file, void *fh, struct v4l2_fmtdesc *f); int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh, struct v4l2_fmtdesc *f); int (*vidioc_enum_fmt_vid_out) (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_vid_cap) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_vid_out) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_vbi_cap) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_vbi_out) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_g_fmt_sliced_vbi_out)(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_vid_cap) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_vid_out) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_vbi_cap) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_vbi_out) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_s_fmt_sliced_vbi_out)(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_vid_cap) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_vid_out) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_vbi_cap) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_vbi_out) (struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh, struct v4l2_format *f); int (*vidioc_try_fmt_sliced_vbi_out)(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 ENUMSTD is handled by videodev.c */ int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm); int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm); 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_enum_output) (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_jpegcomp) (struct file *file, void *fh, struct v4l2_jpegcompression *a); int (*vidioc_s_jpegcomp) (struct file *file, void *fh, struct v4l2_jpegcompression *a); int (*vidioc_g_enc_index) (struct file *file, void *fh, struct v4l2_enc_idx *a); int (*vidioc_encoder_cmd) (struct file *file, void *fh, struct v4l2_encoder_cmd *a); int (*vidioc_try_encoder_cmd) (struct file *file, void *fh, struct v4l2_encoder_cmd *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); int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh, struct v4l2_hw_freq_seek *a); /* Debugging ioctls */ #ifdef CONFIG_VIDEO_ADV_DEBUG int (*vidioc_g_register) (struct file *file, void *fh, struct v4l2_register *reg); int (*vidioc_s_register) (struct file *file, void *fh, struct v4l2_register *reg); #endif int (*vidioc_g_chip_ident) (struct file *file, void *fh, struct v4l2_chip_ident *chip); /* For other private ioctls */ int (*vidioc_default) (struct file *file, void *fh, int cmd, void *arg); }; /* v4l debugging and diagnostics */ /* Debug bitmask flags to be used on V4L2 */ #define V4L2_DEBUG_IOCTL 0x01 #define V4L2_DEBUG_IOCTL_ARG 0x02 /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */ #define v4l_print_ioctl(name, cmd) \ do { \ printk(KERN_DEBUG "%s: ", name); \ v4l_printk_ioctl(cmd); \ } while (0) /* Use this macro in I2C drivers where 'client' is the struct i2c_client pointer */ #define v4l_i2c_print_ioctl(client, cmd) \ do { \ v4l_client_printk(KERN_DEBUG, client, ""); \ v4l_printk_ioctl(cmd); \ } while (0) /* Video standard functions */ extern const char *v4l2_norm_to_name(v4l2_std_id id); extern int v4l2_video_std_construct(struct v4l2_standard *vs, int id, const char *name); /* Prints the ioctl in a human-readable format */ extern void v4l_printk_ioctl(unsigned int cmd); /* names for fancy debug output */ extern const char *v4l2_field_names[]; extern const char *v4l2_type_names[]; /* Compatibility layer interface -- v4l1-compat module */ typedef int (*v4l2_kioctl)(struct file *file, unsigned int cmd, void *arg); #ifdef CONFIG_VIDEO_V4L1_COMPAT int v4l_compat_translate_ioctl(struct file *file, int cmd, void *arg, v4l2_kioctl driver_ioctl); #else #define v4l_compat_translate_ioctl(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); /* 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)); /* Standard handlers for V4L ioctl's */ /* This prototype is used on fops.unlocked_ioctl */ extern int __video_ioctl2(struct file *file, unsigned int cmd, unsigned long arg); /* This prototype is used on fops.ioctl * Since fops.ioctl enables Kernel Big Lock, it is preferred * to use __video_ioctl2 instead. * It should be noticed that there's no lock code inside * video_ioctl2(). */ extern int video_ioctl2(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); #endif /* _V4L2_IOCTL_H */