drm/tegra: Implement page-flipping support
All the necessary support bits like .mode_set_base() and VBLANK are now
available, so page-flipping case easily be implemented on top.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h
index e2fa328..79eaec9 100644
--- a/drivers/gpu/drm/tegra/dc.h
+++ b/drivers/gpu/drm/tegra/dc.h
@@ -58,6 +58,8 @@
#define DC_CMD_SIGNAL_RAISE3 0x03e
#define DC_CMD_STATE_ACCESS 0x040
+#define READ_MUX (1 << 0)
+#define WRITE_MUX (1 << 2)
#define DC_CMD_STATE_CONTROL 0x041
#define GENERAL_ACT_REQ (1 << 0)