[PATCH 3/9] drm/imx: ipuv3-plane: request modeset if plane offsets changed

[Ying Liu]

On Wed, Oct 19, 2016 at 12:07 AM, Philipp Zabel <p.zabel at pengutronix.de> wrote:
> If the framebuffer pixel format is planar YUV and unchanged, but the U
> or V plane offsets change, do not return an error, but request a modeset
> instead.
>
> Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>

Acked-by: Liu Ying <gnuiyl at gmail.com>

> ---
>  drivers/gpu/drm/imx/ipuv3-plane.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
> index d4a771c..f217444 100644
> --- a/drivers/gpu/drm/imx/ipuv3-plane.c
> +++ b/drivers/gpu/drm/imx/ipuv3-plane.c
> @@ -356,13 +356,11 @@ static int ipu_plane_atomic_check(struct drm_plane *plane,
>                 if ((ubo > 0xfffff8) || (vbo > 0xfffff8))
>                         return -EINVAL;
>
> -               if (old_fb &&
> -                   (old_fb->pixel_format == DRM_FORMAT_YUV420 ||
> -                    old_fb->pixel_format == DRM_FORMAT_YVU420)) {
> +               if (old_fb && (fb->pixel_format == old_fb->pixel_format)) {
>                         old_ubo = drm_plane_state_to_ubo(old_state);
>                         old_vbo = drm_plane_state_to_vbo(old_state);
>                         if (ubo != old_ubo || vbo != old_vbo)
> -                               return -EINVAL;
> +                               crtc_state->mode_changed = true;
>                 }
>
>                 if (fb->pitches[1] != fb->pitches[2])
> --
> 2.9.3
>