drm/exynos: decon5433: Fix per-plane global alpha for XRGB modes

[ Upstream commit ab337fc274a1957ff0771f19e826c736253f7c39 ]

Set per-plane global alpha to maximum value to get proper blending of
XRGB and ARGB planes. This fixes the strange order of overlapping planes.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index 6be5b53c3b279f42ee6dbcc445173fa539721ce5..8508f14bfebfa3eaa5d9cb0cd2ece3336fcbdd71 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -352,8 +352,8 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
                writel(val, ctx->addr + DECON_VIDOSDxB(win));
        }
 
-       val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
-               VIDOSD_Wx_ALPHA_B_F(0x0);
+       val = VIDOSD_Wx_ALPHA_R_F(0xff) | VIDOSD_Wx_ALPHA_G_F(0xff) |
+               VIDOSD_Wx_ALPHA_B_F(0xff);
        writel(val, ctx->addr + DECON_VIDOSDxC(win));
 
        val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |