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>
---
v2: fixed clear-bit code (Thx Marek)
---
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..77a614d 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);
+ clear_bit(BIT_REQUEST_UPDATE, &ctx->flags);
+ }
if (ctx->out_type & IFTYPE_I80)
set_bit(BIT_WIN_UPDATED, &ctx->flags);
--
2.7.4
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