Hi Andrzej,
On 01/13/2017 05:10 PM, Andrzej Hajda wrote:
> STANDALONE_UPDATE_F should be set if something changed in plane configurations,
> including plane disable.
> The patch fixes page-faults bugs, caused by decon still using framebuffers
> of disabled planes.
>
> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> index ef7fcb5..3999e88 100644
> --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> @@ -46,7 +46,8 @@ enum decon_flag_bits {
> BIT_CLKS_ENABLED,
> BIT_IRQS_ENABLED,
> BIT_WIN_UPDATED,
> - BIT_SUSPENDED
> + BIT_SUSPENDED,
> + BIT_REQUEST_UPDATE
> };
>
> struct decon_context {
> @@ -313,6 +314,7 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
>
> /* window enable */
> decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
> + set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
> }
>
> static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> @@ -325,6 +327,7 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> return;
>
> decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
> + set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
> }
>
> static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
> @@ -339,8 +342,10 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
> decon_shadow_protect_win(ctx, i, false);
>
> /* update iff there are active windows */
> - if (crtc->base.state->plane_mask)
> + if (test_bit(BIT_REQUEST_UPDATE, &ctx->flags)) {
> decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
> + set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
> + }
There is no code to clear BIT_REQUEST_UPDATE, is it right?
Thanks.
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