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Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.h')
-rw-r--r--drivers/gpu/drm/udl/udl_drv.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
index e98d70487eab..89c0539c758e 100644
--- a/drivers/gpu/drm/udl/udl_drv.h
+++ b/drivers/gpu/drm/udl/udl_drv.h
@@ -110,4 +110,13 @@ int udl_drop_usb(struct drm_device *dev);
#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
+/* On/Off for driving the DisplayLink framebuffer to the display */
+#define UDL_REG_BLANK_MODE 0x1f
+
+#define UDL_BLANK_MODE_ON 0x00 /* hsync and vsync on, visible */
+#define UDL_BLANK_MODE_BLANKED 0x01 /* hsync and vsync on, blanked */
+#define UDL_BLANK_MODE_VSYNC_OFF 0x03 /* vsync off, blanked */
+#define UDL_BLANK_MODE_HSYNC_OFF 0x05 /* hsync off, blanked */
+#define UDL_BLANK_MODE_POWERDOWN 0x07 /* powered off; requires modeset */
+
#endif