Hi Sylwester,
Am Freitag, den 13.09.2013, 14:56 +0200 schrieb Sylwester Nawrocki:
> Simplify the driver by using the m2m ioctl and vb2 helpers.
>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> Signed-off-by: Kyugmin Park <kyungmin.park@xxxxxxxxxxx>
> ---
> drivers/media/platform/mem2mem_testdev.c | 94 ++++--------------------------
> 1 file changed, 11 insertions(+), 83 deletions(-)
>
> diff --git a/drivers/media/platform/mem2mem_testdev.c b/drivers/media/platform/mem2mem_testdev.c
> index 6a17676..73df44f 100644
> --- a/drivers/media/platform/mem2mem_testdev.c
> +++ b/drivers/media/platform/mem2mem_testdev.c
> @@ -359,21 +359,6 @@ static void job_abort(void *priv)
> ctx->aborting = 1;
> }
>
> -static void m2mtest_lock(void *priv)
> -{
> - struct m2mtest_ctx *ctx = priv;
> - struct m2mtest_dev *dev = ctx->dev;
> - mutex_lock(&dev->dev_mutex);
> -}
> -
> -static void m2mtest_unlock(void *priv)
> -{
> - struct m2mtest_ctx *ctx = priv;
> - struct m2mtest_dev *dev = ctx->dev;
> - mutex_unlock(&dev->dev_mutex);
> -}
> -
> -
> /* device_run() - prepares and starts the device
> *
> * This simulates all the immediate preparations required before starting
> @@ -648,52 +633,6 @@ static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
> return ret;
> }
>
> -static int vidioc_reqbufs(struct file *file, void *priv,
> - struct v4l2_requestbuffers *reqbufs)
> -{
> - struct m2mtest_ctx *ctx = file2ctx(file);
> -
> - return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
> -}
> -
> -static int vidioc_querybuf(struct file *file, void *priv,
> - struct v4l2_buffer *buf)
> -{
> - struct m2mtest_ctx *ctx = file2ctx(file);
> -
> - return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
> -}
> -
> -static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> -{
> - struct m2mtest_ctx *ctx = file2ctx(file);
> -
> - return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
> -}
> -
> -static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> -{
> - struct m2mtest_ctx *ctx = file2ctx(file);
> -
> - return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
> -}
> -
> -static int vidioc_streamon(struct file *file, void *priv,
> - enum v4l2_buf_type type)
> -{
> - struct m2mtest_ctx *ctx = file2ctx(file);
> -
> - return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
> -}
> -
> -static int vidioc_streamoff(struct file *file, void *priv,
> - enum v4l2_buf_type type)
> -{
> - struct m2mtest_ctx *ctx = file2ctx(file);
> -
> - return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
> -}
> -
> static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl)
> {
> struct m2mtest_ctx *ctx =
> @@ -748,14 +687,14 @@ static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = {
> .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
> .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
>
> - .vidioc_reqbufs = vidioc_reqbufs,
> - .vidioc_querybuf = vidioc_querybuf,
> + .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_qbuf = vidioc_qbuf,
> - .vidioc_dqbuf = vidioc_dqbuf,
> + .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>
> - .vidioc_streamon = vidioc_streamon,
> - .vidioc_streamoff = vidioc_streamoff,
> .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
> .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
> };
> @@ -821,24 +760,12 @@ static void m2mtest_buf_queue(struct vb2_buffer *vb)
> v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
> }
>
> -static void m2mtest_wait_prepare(struct vb2_queue *q)
> -{
> - struct m2mtest_ctx *ctx = vb2_get_drv_priv(q);
> - m2mtest_unlock(ctx);
> -}
> -
> -static void m2mtest_wait_finish(struct vb2_queue *q)
> -{
> - struct m2mtest_ctx *ctx = vb2_get_drv_priv(q);
> - m2mtest_lock(ctx);
> -}
> -
> static struct vb2_ops m2mtest_qops = {
> .queue_setup = m2mtest_queue_setup,
> .buf_prepare = m2mtest_buf_prepare,
> .buf_queue = m2mtest_buf_queue,
> - .wait_prepare = m2mtest_wait_prepare,
> - .wait_finish = m2mtest_wait_finish,
> + .wait_prepare = vb2_ops_wait_prepare,
> + .wait_finish = vb2_ops_wait_finish,
> };
>
> static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
> @@ -853,6 +780,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *ds
> src_vq->ops = &m2mtest_qops;
> src_vq->mem_ops = &vb2_vmalloc_memops;
> src_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + src_vq->lock = &ctx->dev->dev_mutex;
>
> ret = vb2_queue_init(src_vq);
> if (ret)
> @@ -865,6 +793,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *ds
> dst_vq->ops = &m2mtest_qops;
> dst_vq->mem_ops = &vb2_vmalloc_memops;
> dst_vq->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> + dst_vq->lock = &ctx->dev->dev_mutex;
>
> return vb2_queue_init(dst_vq);
> }
> @@ -945,6 +874,7 @@ static int m2mtest_open(struct file *file)
> kfree(ctx);
> goto open_unlock;
> }
> + ctx->fh.m2m_ctx = ctx->m2m_ctx;
Since you added m2m_ctx to v4l2_fh, why not drop ctx->m2m_ctx altogether
and always use ctx->fh.m2m_ctx instead?
> v4l2_fh_add(&ctx->fh);
> atomic_inc(&dev->num_inst);
> @@ -1019,8 +949,6 @@ static struct v4l2_m2m_ops m2m_ops = {
> .device_run = device_run,
> .job_ready = job_ready,
> .job_abort = job_abort,
> - .lock = m2mtest_lock,
> - .unlock = m2mtest_unlock,
> };
>
> static int m2mtest_probe(struct platform_device *pdev)
regards
Philipp
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