drm/exynos/decon5433: fix DECON standalone update

DECON should be updated after un-protecting windows and after changing
output parameters, otherwise image is not displayed in case of HDMI path.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos5433_drm_decon.c

@@ -187,6 +187,8 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
 
 	/* enable output and display signal */
 	decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0);
+
+	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
 }
 
 static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
@@ -312,9 +314,6 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 
 	/* window enable */
 	decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
-
-	/* standalone update */
-	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
 }
 
 static void decon_disable_plane(struct exynos_drm_crtc *crtc,
@@ -332,9 +331,6 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
 	decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
 
 	decon_shadow_protect_win(ctx, win, false);
-
-	/* standalone update */
-	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
 }
 
 static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
@@ -348,6 +344,9 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
 	for (i = ctx->first_win; i < WINDOWS_NR; i++)
 		decon_shadow_protect_win(ctx, i, false);
 
+	/* standalone update */
+	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
+
 	if (ctx->out_type == IFTYPE_I80)
 		set_bit(BIT_WIN_UPDATED, &ctx->flags);
 }
@@ -459,8 +458,10 @@ static void decon_clear_channels(struct exynos_drm_crtc *crtc)
 		decon_shadow_protect_win(ctx, win, true);
 		decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
 		decon_shadow_protect_win(ctx, win, false);
-		decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
 	}
+
+	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
+
 	/* TODO: wait for possible vsync */
 	msleep(50);