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drm/imx: ipuv3 plane: Check different types of plane separately 

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@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Liu Ying 2016-07-08 17:40:53 +08:00 committed by Philipp Zabel
parent 9253d0590e
commit 08a8901882
1 changed files with 38 additions and 29 deletions
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67
drivers/gpu/drm/imx/ipuv3-plane.c
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@ -199,37 +199,46 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
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 (ipu_plane->base.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)
/* full plane minimum width is 13 pixels */
if (crtc_w < 13)
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;
}
/* full plane minimum width is 13 pixels */
if (crtc_w < 13 && (ipu_plane->dp_flow != IPU_DP_FLOW_SYNC_FG))
} else if (ipu_plane->base.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;