This bit will indicate the plane is provided by GSCALER.
Tests shows that GSCALER does not like to convert from/to too small
buffers. Since exact constraints are not provided by documentation
rough estimate of 64 pixel has been applied.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_drv.h | 1 +
drivers/gpu/drm/exynos/exynos_drm_plane.c | 14 +++++++++++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 5d06e796dc80..7bdbac639b2b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -75,6 +75,7 @@ to_exynos_plane_state(struct drm_plane_state *state)
#define EXYNOS_DRM_PLANE_CAP_TILE (1 << 3)
#define EXYNOS_DRM_PLANE_CAP_PIX_BLEND (1 << 4)
#define EXYNOS_DRM_PLANE_CAP_WIN_BLEND (1 << 5)
+#define EXYNOS_DRM_PLANE_CAP_GSCALER (1 << 6)
struct exynos_drm_plane;
struct exynos_drm_plane_ops {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index 5f8f56b69369..89168157e1e2 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -198,6 +198,11 @@ exynos_drm_plane_check_format(struct exynos_drm_plane_state *state)
return 0;
}
+static bool is_in_range(int val, int min, int max)
+{
+ return (val >= min) && (val < max);
+}
+
static int
exynos_drm_plane_check_size(struct exynos_drm_plane_state *state)
{
@@ -205,7 +210,7 @@ exynos_drm_plane_check_size(struct exynos_drm_plane_state *state)
bool width_ok = false, height_ok = false;
if (plane->capabilities & EXYNOS_DRM_PLANE_CAP_SCALE)
- return 0;
+ width_ok = height_ok = true;
if (state->src.w == state->crtc.w)
width_ok = true;
@@ -221,6 +226,13 @@ exynos_drm_plane_check_size(struct exynos_drm_plane_state *state)
state->v_ratio == (1 << 15))
height_ok = true;
+ if (plane->capabilities & EXYNOS_DRM_PLANE_CAP_GSCALER) {
+ width_ok = is_in_range(state->src.w, 64, 4800) &&
+ is_in_range(state->crtc.w, 64, 4800);
+ height_ok = is_in_range(state->src.h, 64, 3344) &&
+ is_in_range(state->crtc.h, 64, 3344);
+ }
+
if (width_ok && height_ok)
return 0;
--
2.17.1
