freedreno: expose time-elapsed query

Signed-off-by: Rob Clark <robclark@freedesktop.org>

src/gallium/drivers/freedreno/freedreno_query_hw.c

@@ -47,6 +47,8 @@ static int pidx(unsigned query_type)
 		return 0;
 	case PIPE_QUERY_OCCLUSION_PREDICATE:
 		return 1;
+	case PIPE_QUERY_TIME_ELAPSED:
+		return 2;
 	default:
 		return -1;
 	}

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -298,12 +298,14 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 		return is_a3xx(screen) ? 1 : 0;
 
 	/* Queries. */
-	case PIPE_CAP_QUERY_TIME_ELAPSED:
 	case PIPE_CAP_QUERY_TIMESTAMP:
 	case PIPE_CAP_QUERY_BUFFER_OBJECT:
 		return 0;
 	case PIPE_CAP_OCCLUSION_QUERY:
 		return is_a3xx(screen) || is_a4xx(screen);
+	case PIPE_CAP_QUERY_TIME_ELAPSED:
+		/* only a4xx, requires new enough kernel so we know max_freq: */
+		return (screen->max_freq > 0) && is_a4xx(screen);
 
 	case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 	case PIPE_CAP_MIN_TEXEL_OFFSET: