[1/2] drm/vkms: allow full alpha blending on all planes

Commit Message

Maíra Canal April 14, 2023, 7:09 p.m. UTC

Before commit bc0d7fdefec6 ("drm: vkms: Supports to the case where
primary plane doesn't match the CRTC"), the composition was executed on
top of the primary plane. Therefore, the primary plane was not able to
support the alpha channel. After commit bc0d7fdefec6, this is possible,
as the composition is now executed on top of the CRTC.

So, allow all planes to support the alpha channel, making full alpha
blending possible in vkms.

Signed-off-by: Maíra Canal <[e-mail]>
---
 drivers/gpu/drm/vkms/vkms_plane.c | 32 ++-----------------------------
 1 file changed, 2 insertions(+), 30 deletions(-)

Patch

diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index c41cec7dcb70..70474c74b681 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -12,12 +12,6 @@ 
 #include "vkms_formats.h"
 
 static const u32 vkms_formats[] = {
-	DRM_FORMAT_XRGB8888,
-	DRM_FORMAT_XRGB16161616,
-	DRM_FORMAT_RGB565
-};
-
-static const u32 vkms_plane_formats[] = {
 	DRM_FORMAT_ARGB8888,
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_XRGB16161616,
@@ -196,38 +190,16 @@  struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
 				   enum drm_plane_type type, int index)
 {
 	struct drm_device *dev = &vkmsdev->drm;
-	const struct drm_plane_helper_funcs *funcs;
 	struct vkms_plane *plane;
-	const u32 *formats;
-	int nformats;
-
-	switch (type) {
-	case DRM_PLANE_TYPE_PRIMARY:
-		formats = vkms_formats;
-		nformats = ARRAY_SIZE(vkms_formats);
-		funcs = &vkms_primary_helper_funcs;
-		break;
-	case DRM_PLANE_TYPE_CURSOR:
-	case DRM_PLANE_TYPE_OVERLAY:
-		formats = vkms_plane_formats;
-		nformats = ARRAY_SIZE(vkms_plane_formats);
-		funcs = &vkms_primary_helper_funcs;
-		break;
-	default:
-		formats = vkms_formats;
-		nformats = ARRAY_SIZE(vkms_formats);
-		funcs = &vkms_primary_helper_funcs;
-		break;
-	}
 
 	plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index,
 					   &vkms_plane_funcs,
-					   formats, nformats,
+					   vkms_formats, ARRAY_SIZE(vkms_formats),
 					   NULL, type, NULL);
 	if (IS_ERR(plane))
 		return plane;
 
-	drm_plane_helper_add(&plane->base, funcs);
+	drm_plane_helper_add(&plane->base, &vkms_primary_helper_funcs);
 
 	return plane;
 }