详解linux 摄像头驱动编写

  drivers/media 

  config VIDEO_S3C_CAMIF     tristate "Samsung S3C24XX/S3C64XX SoC Camera Interface driver"     depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API     depends on PM     depends on ARCH_S3C64XX || PLAT_S3C24XX || COMPILE_TEST     depends on HAS_DMA     select VIDEOBUF2_DMA_CONTIG     ---help---      This is a v4l2 driver for s3c24xx and s3c64xx SoC series camera      host interface (CAMIF).         To compile this driver as a module, choose M here: the module      will be called s3c-camif.   

  obj-$(CONFIG_VIDEO_S3C_CAMIF)    += s3c-camif/ 

  # Makefile for s3c244x/s3c64xx CAMIF driver      s3c-camif-objs := camif-core.o camif-capture.o camif-regs.o      obj-$(CONFIG_VIDEO_S3C_CAMIF) += s3c-camif.o 

  static const struct v4l2_ioctl_ops s3c_camif_ioctl_ops = {     .vidioc_querycap   = s3c_camif_vidioc_querycap,     .vidioc_enum_input  = s3c_camif_vidioc_enum_input,     .vidioc_g_input    = s3c_camif_vidioc_g_input,     .vidioc_s_input    = s3c_camif_vidioc_s_input,     .vidioc_enum_fmt_vid_cap = s3c_camif_vidioc_enum_fmt,     .vidioc_try_fmt_vid_cap  = s3c_camif_vidioc_try_fmt,     .vidioc_s_fmt_vid_cap   = s3c_camif_vidioc_s_fmt,     .vidioc_g_fmt_vid_cap   = s3c_camif_vidioc_g_fmt,     .vidioc_g_selection  = s3c_camif_g_selection,     .vidioc_s_selection  = s3c_camif_s_selection,     .vidioc_reqbufs    = s3c_camif_reqbufs,     .vidioc_querybuf   = s3c_camif_querybuf,     .vidioc_prepare_buf  = s3c_camif_prepare_buf,     .vidioc_create_bufs  = s3c_camif_create_bufs,     .vidioc_qbuf     = s3c_camif_qbuf,     .vidioc_dqbuf     = s3c_camif_dqbuf,     .vidioc_streamon   = s3c_camif_streamon,     .vidioc_streamoff   = s3c_camif_streamoff,     .vidioc_subscribe_event  = v4l2_ctrl_subscribe_event,     .vidioc_unsubscribe_event = v4l2_event_unsubscribe,     .vidioc_log_status  = v4l2_ctrl_log_status,   };   

  649 static const struct v4l2_file_operations s3c_camif_fops = {   650     .owner     = THIS_MODULE,   651     .open      = s3c_camif_open,   652     .release    = s3c_camif_close,   653     .poll      = s3c_camif_poll,   654     .unlocked_ioctl = video_ioctl2,   655     .mmap      = s3c_camif_mmap,   656 };