OMAP: DSS2: Create enum for DSI operation modes

Create an enum for DSI operation modes, use this to set the capabilities of the
device in dsi_init_display().

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index bdc2c9d..d3bffe8 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -4123,9 +4123,10 @@
 
 	DSSDBG("DSI init\n");
 
-	/* XXX these should be figured out dynamically */
-	dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
-		OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
+	if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_CMD_MODE) {
+		dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
+			OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
+	}
 
 	if (dsi->vdds_dsi_reg == NULL) {
 		struct regulator *vdds_dsi;