drm: shmobile: Switch to drm_crtc_init_with_planes()

The SH-Mobile DRM driver uses the legacy drm_crtc_init(), which
advertizes only the formats in safe_modeset_formats[] (XR24 and AR24) as
being supported.

Switch to drm_crtc_init_with_planes(), and advertize all supported
(A)RGB modes, so we can use RGB565 as the default mode for the console.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/2098de3d33bc479a8569da7dcbafdb685ff0a13a.1684854992.git.geert+renesas@glider.be

drivers/gpu/drm/shmobile/shmob_drm_crtc.c

@@ -18,6 +18,7 @@
 #include <drm/drm_gem_dma_helper.h>
 #include <drm/drm_modeset_helper.h>
 #include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
 #include <drm/drm_vblank.h>
@@ -478,16 +479,41 @@ static const struct drm_crtc_funcs crtc_funcs = {
 	.disable_vblank = shmob_drm_disable_vblank,
 };
 
+static const uint32_t modeset_formats[] = {
+	DRM_FORMAT_RGB565,
+	DRM_FORMAT_RGB888,
+	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_XRGB8888,
+};
+
+static const struct drm_plane_funcs primary_plane_funcs = {
+	DRM_PLANE_NON_ATOMIC_FUNCS,
+};
+
 int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
 {
 	struct drm_crtc *crtc = &sdev->crtc.crtc;
+	struct drm_plane *primary;
 	int ret;
 
 	sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
 
-	ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
-	if (ret < 0)
+	primary = __drm_universal_plane_alloc(sdev->ddev, sizeof(*primary), 0,
+					      0, &primary_plane_funcs,
+					      modeset_formats,
+					      ARRAY_SIZE(modeset_formats),
+					      NULL, DRM_PLANE_TYPE_PRIMARY,
+					      NULL);
+	if (IS_ERR(primary))
+		return PTR_ERR(primary);
+
+	ret = drm_crtc_init_with_planes(sdev->ddev, crtc, primary, NULL,
+					&crtc_funcs, NULL);
+	if (ret < 0) {
+		drm_plane_cleanup(primary);
+		kfree(primary);
 		return ret;
+	}
 
 	drm_crtc_helper_add(crtc, &crtc_helper_funcs);