On 09/13/2013 02:56 PM, Sylwester Nawrocki wrote:
> Simplify the driver by using the m2m ioctl and vb2 helpers.
> 
> Signed-off-by: Sylwester Nawrocki <[email protected]>
> Signed-off-by: Kyugmin Park <[email protected]>

Acked-by: Hans Verkuil <[email protected]>

Regards,

        Hans

> ---
>  drivers/media/platform/s5p-g2d/g2d.c |  103 
> ++++------------------------------
>  1 file changed, 11 insertions(+), 92 deletions(-)
> 
> diff --git a/drivers/media/platform/s5p-g2d/g2d.c 
> b/drivers/media/platform/s5p-g2d/g2d.c
> index 553d87e..d59d546 100644
> --- a/drivers/media/platform/s5p-g2d/g2d.c
> +++ b/drivers/media/platform/s5p-g2d/g2d.c
> @@ -139,7 +139,6 @@ static void g2d_buf_queue(struct vb2_buffer *vb)
>       v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
>  }
>  
> -
>  static struct vb2_ops g2d_qops = {
>       .queue_setup    = g2d_queue_setup,
>       .buf_prepare    = g2d_buf_prepare,
> @@ -159,6 +158,7 @@ static int queue_init(void *priv, struct vb2_queue 
> *src_vq,
>       src_vq->mem_ops = &vb2_dma_contig_memops;
>       src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
>       src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> +     src_vq->lock = &ctx->dev->mutex;
>  
>       ret = vb2_queue_init(src_vq);
>       if (ret)
> @@ -171,6 +171,7 @@ static int queue_init(void *priv, struct vb2_queue 
> *src_vq,
>       dst_vq->mem_ops = &vb2_dma_contig_memops;
>       dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
>       dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> +     dst_vq->lock = &ctx->dev->mutex;
>  
>       return vb2_queue_init(dst_vq);
>  }
> @@ -263,6 +264,7 @@ static int g2d_open(struct file *file)
>       v4l2_fh_init(&ctx->fh, video_devdata(file));
>       file->private_data = &ctx->fh;
>       v4l2_fh_add(&ctx->fh);
> +     ctx->fh.m2m_ctx = ctx->m2m_ctx;
>  
>       g2d_setup_ctrls(ctx);
>  
> @@ -410,72 +412,6 @@ static int vidioc_s_fmt(struct file *file, void *prv, 
> struct v4l2_format *f)
>       return 0;
>  }
>  
> -static unsigned int g2d_poll(struct file *file, struct poll_table_struct 
> *wait)
> -{
> -     struct g2d_ctx *ctx = fh2ctx(file->private_data);
> -     struct g2d_dev *dev = ctx->dev;
> -     unsigned int res;
> -
> -     mutex_lock(&dev->mutex);
> -     res = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
> -     mutex_unlock(&dev->mutex);
> -     return res;
> -}
> -
> -static int g2d_mmap(struct file *file, struct vm_area_struct *vma)
> -{
> -     struct g2d_ctx *ctx = fh2ctx(file->private_data);
> -     struct g2d_dev *dev = ctx->dev;
> -     int ret;
> -
> -     if (mutex_lock_interruptible(&dev->mutex))
> -             return -ERESTARTSYS;
> -     ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
> -     mutex_unlock(&dev->mutex);
> -     return ret;
> -}
> -
> -static int vidioc_reqbufs(struct file *file, void *priv,
> -                     struct v4l2_requestbuffers *reqbufs)
> -{
> -     struct g2d_ctx *ctx = priv;
> -     return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
> -}
> -
> -static int vidioc_querybuf(struct file *file, void *priv,
> -                     struct v4l2_buffer *buf)
> -{
> -     struct g2d_ctx *ctx = priv;
> -     return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
> -}
> -
> -static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer 
> *buf)
> -{
> -     struct g2d_ctx *ctx = priv;
> -     return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
> -}
> -
> -static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer 
> *buf)
> -{
> -     struct g2d_ctx *ctx = priv;
> -     return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
> -}
> -
> -
> -static int vidioc_streamon(struct file *file, void *priv,
> -                                     enum v4l2_buf_type type)
> -{
> -     struct g2d_ctx *ctx = priv;
> -     return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
> -}
> -
> -static int vidioc_streamoff(struct file *file, void *priv,
> -                                     enum v4l2_buf_type type)
> -{
> -     struct g2d_ctx *ctx = priv;
> -     return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
> -}
> -
>  static int vidioc_cropcap(struct file *file, void *priv,
>                                       struct v4l2_cropcap *cr)
>  {
> @@ -551,20 +487,6 @@ static int vidioc_s_crop(struct file *file, void *prv, 
> const struct v4l2_crop *c
>       return 0;
>  }
>  
> -static void g2d_lock(void *prv)
> -{
> -     struct g2d_ctx *ctx = prv;
> -     struct g2d_dev *dev = ctx->dev;
> -     mutex_lock(&dev->mutex);
> -}
> -
> -static void g2d_unlock(void *prv)
> -{
> -     struct g2d_ctx *ctx = prv;
> -     struct g2d_dev *dev = ctx->dev;
> -     mutex_unlock(&dev->mutex);
> -}
> -
>  static void job_abort(void *prv)
>  {
>       struct g2d_ctx *ctx = prv;
> @@ -653,9 +575,9 @@ static const struct v4l2_file_operations g2d_fops = {
>       .owner          = THIS_MODULE,
>       .open           = g2d_open,
>       .release        = g2d_release,
> -     .poll           = g2d_poll,
> +     .poll           = v4l2_m2m_fop_poll,
>       .unlocked_ioctl = video_ioctl2,
> -     .mmap           = g2d_mmap,
> +     .mmap           = v4l2_m2m_fop_mmap,
>  };
>  
>  static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
> @@ -671,14 +593,13 @@ static const struct v4l2_ioctl_ops g2d_ioctl_ops = {
>       .vidioc_try_fmt_vid_out         = vidioc_try_fmt,
>       .vidioc_s_fmt_vid_out           = vidioc_s_fmt,
>  
> -     .vidioc_reqbufs                 = vidioc_reqbufs,
> -     .vidioc_querybuf                = vidioc_querybuf,
> -
> -     .vidioc_qbuf                    = vidioc_qbuf,
> -     .vidioc_dqbuf                   = vidioc_dqbuf,
> +     .vidioc_reqbufs                 = v4l2_m2m_ioctl_reqbufs,
> +     .vidioc_querybuf                = v4l2_m2m_ioctl_querybuf,
> +     .vidioc_qbuf                    = v4l2_m2m_ioctl_qbuf,
> +     .vidioc_dqbuf                   = v4l2_m2m_ioctl_dqbuf,
>  
> -     .vidioc_streamon                = vidioc_streamon,
> -     .vidioc_streamoff               = vidioc_streamoff,
> +     .vidioc_streamon                = v4l2_m2m_ioctl_streamon,
> +     .vidioc_streamoff               = v4l2_m2m_ioctl_streamoff,
>  
>       .vidioc_g_crop                  = vidioc_g_crop,
>       .vidioc_s_crop                  = vidioc_s_crop,
> @@ -697,8 +618,6 @@ static struct video_device g2d_videodev = {
>  static struct v4l2_m2m_ops g2d_m2m_ops = {
>       .device_run     = device_run,
>       .job_abort      = job_abort,
> -     .lock           = g2d_lock,
> -     .unlock         = g2d_unlock,
>  };
>  
>  static const struct of_device_id exynos_g2d_match[];
> 

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