[PATCH 03/14] drm: imx: ipuv3 plane: Check different types of plane separately

[Liu Ying]

The IPUv3 primary plane doesn't support partial off screen.
So, this patch separates plane check logics for primary plane and overlay
plane and adds more limitations on the primary plane.

Signed-off-by: Liu Ying <gnuiyl at gmail.com>
---
 drivers/gpu/drm/imx/ipuv3-plane.c | 72 ++++++++++++++++++++++-----------------
 1 file changed, 41 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index e6ec8eb..8f91b2e 100644
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -190,44 +190,54 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
 		       uint32_t src_x, uint32_t src_y,
 		       uint32_t src_w, uint32_t src_h, bool interlaced)
 {
-	struct device *dev = ipu_plane->base.dev->dev;
+	struct drm_plane plane = ipu_plane->base;
+	struct device *dev = plane.dev->dev;
 	int ret;
 
 	/* no scaling */
 	if (src_w != crtc_w || src_h != crtc_h)
 		return -EINVAL;
 
-	/* clip to crtc bounds */
-	if (crtc_x < 0) {
-		if (-crtc_x > crtc_w)
+	if (plane.type == DRM_PLANE_TYPE_PRIMARY) {
+		/* full plane doesn't support partial off screen */
+		if (crtc_x || crtc_y || crtc_w != mode->hdisplay ||
+			crtc_h != mode->vdisplay)
 			return -EINVAL;
-		src_x += -crtc_x;
-		src_w -= -crtc_x;
-		crtc_w -= -crtc_x;
-		crtc_x = 0;
-	}
-	if (crtc_y < 0) {
-		if (-crtc_y > crtc_h)
-			return -EINVAL;
-		src_y += -crtc_y;
-		src_h -= -crtc_y;
-		crtc_h -= -crtc_y;
-		crtc_y = 0;
-	}
-	if (crtc_x + crtc_w > mode->hdisplay) {
-		if (crtc_x > mode->hdisplay)
-			return -EINVAL;
-		crtc_w = mode->hdisplay - crtc_x;
-		src_w = crtc_w;
-	}
-	if (crtc_y + crtc_h > mode->vdisplay) {
-		if (crtc_y > mode->vdisplay)
+
+		/* full plane minimum width is 13 pixels */
+		if (crtc_w < 13)
 			return -EINVAL;
-		crtc_h = mode->vdisplay - crtc_y;
-		src_h = crtc_h;
-	}
-	/* full plane minimum width is 13 pixels */
-	if (crtc_w < 13 && (ipu_plane->dp_flow != IPU_DP_FLOW_SYNC_FG))
+	} else if (plane.type == DRM_PLANE_TYPE_OVERLAY) {
+		/* clip to crtc bounds */
+		if (crtc_x < 0) {
+			if (-crtc_x > crtc_w)
+				return -EINVAL;
+			src_x += -crtc_x;
+			src_w -= -crtc_x;
+			crtc_w -= -crtc_x;
+			crtc_x = 0;
+		}
+		if (crtc_y < 0) {
+			if (-crtc_y > crtc_h)
+				return -EINVAL;
+			src_y += -crtc_y;
+			src_h -= -crtc_y;
+			crtc_h -= -crtc_y;
+			crtc_y = 0;
+		}
+		if (crtc_x + crtc_w > mode->hdisplay) {
+			if (crtc_x > mode->hdisplay)
+				return -EINVAL;
+			crtc_w = mode->hdisplay - crtc_x;
+			src_w = crtc_w;
+		}
+		if (crtc_y + crtc_h > mode->vdisplay) {
+			if (crtc_y > mode->vdisplay)
+				return -EINVAL;
+			crtc_h = mode->vdisplay - crtc_y;
+			src_h = crtc_h;
+		}
+	} else
 		return -EINVAL;
 	if (crtc_h < 2)
 		return -EINVAL;
@@ -238,7 +248,7 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
 	 */
 	if (ipu_plane->enabled) {
 		if (src_w != ipu_plane->w || src_h != ipu_plane->h ||
-		    fb->pixel_format != ipu_plane->base.fb->pixel_format)
+		    fb->pixel_format != plane.fb->pixel_format)
 			return -EINVAL;
 
 		return ipu_plane_set_base(ipu_plane, fb, src_x, src_y);
-- 
2.7.4