drm/sun4i: Use drm_crtc_mask()

Use drm_crtc_mask() where appropriate.

Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180626194716.12522-8-ville.syrjala@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>

drivers/gpu/drm/sun4i/sun4i_crtc.c

@@ -242,7 +242,7 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 
 	/* Set possible_crtcs to this crtc for overlay planes */
 	for (i = 0; planes[i]; i++) {
-		uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
+		uint32_t possible_crtcs = drm_crtc_mask(&scrtc->crtc);
 		struct drm_plane *plane = planes[i];
 
 		if (plane->type == DRM_PLANE_TYPE_OVERLAY)

drivers/gpu/drm/sun4i/sun4i_lvds.c

@@ -136,7 +136,7 @@ int sun4i_lvds_init(struct drm_device *drm, struct sun4i_tcon *tcon)
 	}
 
 	/* The LVDS encoder can only work with the TCON channel 0 */
-	lvds->encoder.possible_crtcs = BIT(drm_crtc_index(&tcon->crtc->crtc));
+	lvds->encoder.possible_crtcs = drm_crtc_mask(&tcon->crtc->crtc);
 
 	if (tcon->panel) {
 		drm_connector_helper_add(&lvds->connector,

drivers/gpu/drm/sun4i/sun4i_rgb.c

@@ -202,7 +202,7 @@ int sun4i_rgb_init(struct drm_device *drm, struct sun4i_tcon *tcon)
 	}
 
 	/* The RGB encoder can only work with the TCON channel 0 */
-	rgb->encoder.possible_crtcs = BIT(drm_crtc_index(&tcon->crtc->crtc));
+	rgb->encoder.possible_crtcs = drm_crtc_mask(&tcon->crtc->crtc);
 
 	if (tcon->panel) {
 		drm_connector_helper_add(&rgb->connector,