drm/exynos: gsc: fix wrong bitwise operation for swap detection

The bits for rotation are not used as exclusively. So GSC_IN_ROT_270 can
not be used for swap detection. The definition of it is same with
GSC_IN_ROT_MASK. It is enough to check GSC_IN_ROT_90 bit is set or not to
check whether width / height size swapping is needed.

Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index 8040ed2..f1c6b76 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
@@ -593,8 +593,7 @@ static int gsc_src_set_transf(struct device *dev,
 
        gsc_write(cfg, GSC_IN_CON);
 
-       ctx->rotation = cfg &
-               (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0;
+       ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
        *swap = ctx->rotation;
 
        return 0;
@@ -857,8 +856,7 @@ static int gsc_dst_set_transf(struct device *dev,
 
        gsc_write(cfg, GSC_IN_CON);
 
-       ctx->rotation = cfg &
-               (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0;
+       ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
        *swap = ctx->rotation;
 
        return 0;