Hi Laurent,
Thank you for another patch :D
On 26/02/18 21:45, Laurent Pinchart wrote:
> In order to make the vsp1_du_setup_lif() easier to read, and for
> symmetry with the DRM pipeline input setup, move the pipeline output
> setup code to a separate function.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Just an easy code move. And I agree it improves things.
Small question below, but otherwise:
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> ---
> drivers/media/platform/vsp1/vsp1_drm.c | 107 +++++++++++++++++++--------------
> 1 file changed, 61 insertions(+), 46 deletions(-)
>
> diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c
> index 00ce99bd1605..1c8adda47440 100644
> --- a/drivers/media/platform/vsp1/vsp1_drm.c
> +++ b/drivers/media/platform/vsp1/vsp1_drm.c
> @@ -276,6 +276,66 @@ static int vsp1_du_pipeline_setup_input(struct vsp1_device *vsp1,
> return 0;
> }
>
> +/* Setup the output side of the pipeline (WPF and LIF). */
> +static int vsp1_du_pipeline_setup_output(struct vsp1_device *vsp1,
> + struct vsp1_pipeline *pipe)
> +{
> + struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe);
> + struct v4l2_subdev_format format = {
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
Why do you initialise this .which here, but all the other member variables below.
Wouldn't it make more sense to group all of this initialisation together? or is
there a distinction in keeping the .which separate.
(Perhaps this is just a way to initialise the rest of the structure to 0,
without using the memset?)
> + };
> + int ret;
> +
> + format.pad = RWPF_PAD_SINK;
> + format.format.width = drm_pipe->width;
> + format.format.height = drm_pipe->height;
> + format.format.code = MEDIA_BUS_FMT_ARGB8888_1X32;
> + format.format.field = V4L2_FIELD_NONE;
> +
> + ret = v4l2_subdev_call(&pipe->output->entity.subdev, pad, set_fmt, NULL,
> + &format);
> + if (ret < 0)
> + return ret;
> +
> + dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on WPF%u sink\n",
> + __func__, format.format.width, format.format.height,
> + format.format.code, pipe->output->entity.index);
> +
> + format.pad = RWPF_PAD_SOURCE;
> + ret = v4l2_subdev_call(&pipe->output->entity.subdev, pad, get_fmt, NULL,
> + &format);
> + if (ret < 0)
> + return ret;
> +
> + dev_dbg(vsp1->dev, "%s: got format %ux%u (%x) on WPF%u source\n",
> + __func__, format.format.width, format.format.height,
> + format.format.code, pipe->output->entity.index);
> +
> + format.pad = LIF_PAD_SINK;
> + ret = v4l2_subdev_call(&pipe->lif->subdev, pad, set_fmt, NULL,
> + &format);
> + if (ret < 0)
> + return ret;
> +
> + dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on LIF%u sink\n",
> + __func__, format.format.width, format.format.height,
> + format.format.code, pipe->lif->index);
> +
> + /*
> + * Verify that the format at the output of the pipeline matches the
> + * requested frame size and media bus code.
> + */
> + if (format.format.width != drm_pipe->width ||
> + format.format.height != drm_pipe->height ||
> + format.format.code != MEDIA_BUS_FMT_ARGB8888_1X32) {
> + dev_dbg(vsp1->dev, "%s: format mismatch on LIF%u\n", __func__,
> + pipe->lif->index);
> + return -EPIPE;
> + }
> +
> + return 0;
> +}
> +
> /* Configure all entities in the pipeline. */
> static void vsp1_du_pipeline_configure(struct vsp1_pipeline *pipe)
> {
> @@ -356,7 +416,6 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
> struct vsp1_drm_pipeline *drm_pipe;
> struct vsp1_pipeline *pipe;
> struct vsp1_bru *bru;
> - struct v4l2_subdev_format format;
> unsigned long flags;
> unsigned int i;
> int ret;
> @@ -417,54 +476,10 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
> if (ret < 0)
> return ret;
>
> - memset(&format, 0, sizeof(format));
> - format.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> - format.pad = RWPF_PAD_SINK;
> - format.format.width = cfg->width;
> - format.format.height = cfg->height;
> - format.format.code = MEDIA_BUS_FMT_ARGB8888_1X32;
> - format.format.field = V4L2_FIELD_NONE;
> -
> - ret = v4l2_subdev_call(&pipe->output->entity.subdev, pad, set_fmt, NULL,
> - &format);
> + ret = vsp1_du_pipeline_setup_output(vsp1, pipe);
> if (ret < 0)
> return ret;
>
> - dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on WPF%u sink\n",
> - __func__, format.format.width, format.format.height,
> - format.format.code, pipe->output->entity.index);
> -
> - format.pad = RWPF_PAD_SOURCE;
> - ret = v4l2_subdev_call(&pipe->output->entity.subdev, pad, get_fmt, NULL,
> - &format);
> - if (ret < 0)
> - return ret;
> -
> - dev_dbg(vsp1->dev, "%s: got format %ux%u (%x) on WPF%u source\n",
> - __func__, format.format.width, format.format.height,
> - format.format.code, pipe->output->entity.index);
> -
> - format.pad = LIF_PAD_SINK;
> - ret = v4l2_subdev_call(&pipe->lif->subdev, pad, set_fmt, NULL,
> - &format);
> - if (ret < 0)
> - return ret;
> -
> - dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on LIF%u sink\n",
> - __func__, format.format.width, format.format.height,
> - format.format.code, pipe_index);
> -
> - /*
> - * Verify that the format at the output of the pipeline matches the
> - * requested frame size and media bus code.
> - */
> - if (format.format.width != cfg->width ||
> - format.format.height != cfg->height ||
> - format.format.code != MEDIA_BUS_FMT_ARGB8888_1X32) {
> - dev_dbg(vsp1->dev, "%s: format mismatch\n", __func__);
> - return -EPIPE;
> - }
> -
> /* Enable the VSP1. */
> ret = vsp1_device_get(vsp1);
> if (ret < 0)
>
