On Mon, Dec 03, 2018 at 11:32:03AM +0000, Ayan Halder wrote:
> In malidp, the writeback pipeline does not support writing crtc output
> to a framebuffer with modifiers ie the memory writeback content is
> devoid of any compression or tiling, etc.
> So we have added a commit check in memory writeback encoder helper function
> to validate if the framebuffer has any modifier and if so, return EINVAL.
>
> Signed-off-by: Ayan Kumar halder <ayan.hal...@arm.com>
Acked-by: Liviu Dudau <liviu.du...@arm.com>
> ---
> drivers/gpu/drm/arm/malidp_mw.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/arm/malidp_mw.c b/drivers/gpu/drm/arm/malidp_mw.c
> index 0484744..90c964a 100644
> --- a/drivers/gpu/drm/arm/malidp_mw.c
> +++ b/drivers/gpu/drm/arm/malidp_mw.c
> @@ -141,6 +141,11 @@ malidp_mw_encoder_atomic_check(struct drm_encoder
> *encoder,
> return -EINVAL;
> }
>
> + if (fb->modifier) {
> + DRM_DEBUG_KMS("Writeback framebuffer does not support
> modifiers\n");
> + return -EINVAL;
> + }
> +
> mw_state->format =
> malidp_hw_get_format_id(&malidp->dev->hw->map, SE_MEMWRITE,
> fb->format->format, !!fb->modifier);
> --
> 2.7.4
>
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
