On Tue, Apr 13, 2021 at 11:49:01AM +0200, Daniel Vetter wrote:
> Since
>
> commit 890880ddfdbe256083170866e49c87618b706ac7
> Author: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx>
> Date: Fri Jan 4 09:56:10 2019 +0100
>
> drm: Auto-set allow_fb_modifiers when given modifiers at plane init
>
> this is done automatically as part of plane init, if drivers set the
> modifier list correctly. Which is the case here.
>
> It was slightly inconsistently though, since planes with only linear
> modifier support haven't listed that explicitly. Fix that, and cc:
> stable to allow userspace to rely on this. Again don't backport
> further than where Paul's patch got added.
>
> Cc: stable@xxxxxxxxxxxxxxx # v5.1 +
> Cc: Pekka Paalanen <pekka.paalanen@xxxxxxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> Cc: Jonathan Hunter <jonathanh@xxxxxxxxxx>
> Cc: linux-tegra@xxxxxxxxxxxxxxx
> ---
> drivers/gpu/drm/tegra/dc.c | 10 ++++++++--
> drivers/gpu/drm/tegra/drm.c | 2 --
> 2 files changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
> index c9385cfd0fc1..f9845a50f866 100644
> --- a/drivers/gpu/drm/tegra/dc.c
> +++ b/drivers/gpu/drm/tegra/dc.c
> @@ -959,6 +959,11 @@ static const struct drm_plane_helper_funcs tegra_cursor_plane_helper_funcs = {
> .atomic_disable = tegra_cursor_atomic_disable,
> };
>
> +static const uint64_t linear_modifiers[] = {
> + DRM_FORMAT_MOD_LINEAR,
> + DRM_FORMAT_MOD_INVALID
> +};
> +
> static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
> struct tegra_dc *dc)
> {
> @@ -987,7 +992,7 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
>
> err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
> &tegra_plane_funcs, formats,
> - num_formats, NULL,
> + num_formats, linear_modifiers,
> DRM_PLANE_TYPE_CURSOR, NULL);
> if (err < 0) {
> kfree(plane);
> @@ -1106,7 +1111,8 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
>
> err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
> &tegra_plane_funcs, formats,
> - num_formats, NULL, type, NULL);
> + num_formats, linear_modifiers,
> + type, NULL);
I think we can do better than linear_modifiers for overlay planes, but
given that this doesn't change existing behaviour, I'll do that in a
separate patch.
Acked-by: Thierry Reding <treding@xxxxxxxxxx>
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