[PATCH] drm/exynos/gsc: fix the hardware limitations

[Hoegeun Kwon]

The maximum size of input or output rotation is 2047 x 2047.
Fixed an error on limitations.

Signed-off-by: Hoegeun Kwon <hoegeun.kwon at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_gsc.c | 11 +++++++++--
 include/uapi/drm/exynos_drm.h           |  2 ++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c 
b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index bef5798..36e05ae 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
@@ -71,6 +71,7 @@
 #define GSC_CROP_MIN   32
 #define GSC_SCALE_MAX  4224
 #define GSC_SCALE_MIN  32
+#define GSC_ROT_MAX    2047
 #define GSC_COEF_RATIO 7
 #define GSC_COEF_PHASE 9
 #define GSC_COEF_ATTR  16
@@ -1371,6 +1372,8 @@ static int gsc_init_prop_list(struct exynos_drm_ippdrv 
*ippdrv)
        prop_list->scale_max.vsize = GSC_SCALE_MAX;
        prop_list->scale_min.hsize = GSC_SCALE_MIN;
        prop_list->scale_min.vsize = GSC_SCALE_MIN;
+       prop_list->rot_max.hsize = GSC_ROT_MAX;
+       prop_list->rot_max.vsize = GSC_ROT_MAX;

        return 0;
 }
@@ -1444,7 +1447,9 @@ static int gsc_ippdrv_check_property(struct device *dev,
                                if ((pos->h < pp->crop_min.hsize) ||
                                        (sz->vsize > pp->crop_max.hsize) ||
                                        (pos->w < pp->crop_min.vsize) ||
-                                       (sz->hsize > pp->crop_max.vsize)) {
+                                       (sz->hsize > pp->crop_max.vsize) ||
+                                       (pos->h > pp->rot_max.hsize) ||
+                                       (pos->w > pp->rot_max.vsize)) {
                                        DRM_ERROR("out of crop size.\n");
                                        goto err_property;
                                }
@@ -1465,7 +1470,9 @@ static int gsc_ippdrv_check_property(struct device *dev,
                                if ((pos->h < pp->scale_min.hsize) ||
                                        (sz->vsize > pp->scale_max.hsize) ||
                                        (pos->w < pp->scale_min.vsize) ||
-                                       (sz->hsize > pp->scale_max.vsize)) {
+                                       (sz->hsize > pp->scale_max.vsize) ||
+                                       (pos->h > pp->rot_max.hsize) ||
+                                       (pos->w > pp->rot_max.vsize)) {
                                        DRM_ERROR("out of scale size.\n");
                                        goto err_property;
                                }
diff --git a/include/uapi/drm/exynos_drm.h b/include/uapi/drm/exynos_drm.h
index cb3e9f9..d5d5518 100644
--- a/include/uapi/drm/exynos_drm.h
+++ b/include/uapi/drm/exynos_drm.h
@@ -192,6 +192,7 @@ enum drm_exynos_planer {
  * @crop_max: crop max resolution.
  * @scale_min: scale min resolution.
  * @scale_max: scale max resolution.
+ * @rot_max: rotation max resolution.
  */
 struct drm_exynos_ipp_prop_list {
        __u32   version;
@@ -210,6 +211,7 @@ struct drm_exynos_ipp_prop_list {
        struct drm_exynos_sz    crop_max;
        struct drm_exynos_sz    scale_min;
        struct drm_exynos_sz    scale_max;
+       struct drm_exynos_sz    rot_max;
 };

 /**
-- 
1.9.1