For the overlay plane scanning out a framebuffer with an alpha component, enable the DP local alpha feature on the partial plane.
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de> --- drivers/staging/imx-drm/ipuv3-plane.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/staging/imx-drm/ipuv3-plane.c b/drivers/staging/imx-drm/ipuv3-plane.c index 50de10a..43e36ea 100644 --- a/drivers/staging/imx-drm/ipuv3-plane.c +++ b/drivers/staging/imx-drm/ipuv3-plane.c @@ -151,14 +151,22 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc, ret); return ret; } - ipu_dp_set_global_alpha(ipu_plane->dp, 1, 0, 1); + ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true); break; case IPU_DP_FLOW_SYNC_FG: ipu_dp_setup_channel(ipu_plane->dp, ipu_drm_fourcc_to_colorspace(fb->pixel_format), IPUV3_COLORSPACE_UNKNOWN); ipu_dp_set_window_pos(ipu_plane->dp, crtc_x, crtc_y); - break; + /* Enable local alpha on partial plane */ + switch (fb->pixel_format) { + case DRM_FORMAT_ARGB8888: + case DRM_FORMAT_ABGR8888: + ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false); + break; + default: + break; + } } ret = ipu_dmfc_init_channel(ipu_plane->dmfc, crtc_w); -- 2.1.0 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel