intelfb: add vsync interrupt support

[05/05] intelfb: Honor FB_ACTIVATE_VBL for display panning

Extends the intelfb_vsync struct to store panning offset. The interrupt service routine uses the stored panning offset if a pan is requested for the vsync. intelfbhw_disable_irq also pans the display if there is a pending request.

Signed-off-by: Eric Hustvedt <ehustvedt@cecropia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/video/intelfb/intelfb.h b/drivers/video/intelfb/intelfb.h
index 65ac37071a02..abd4c5632e38 100644
--- a/drivers/video/intelfb/intelfb.h
+++ b/drivers/video/intelfb/intelfb.h
@@ -211,6 +211,8 @@ struct intelfb_heap_data {
 struct intelfb_vsync {
         wait_queue_head_t wait;
         unsigned int count;
+        int pan_display;
+        u32 pan_offset;
 };
 
 struct intelfb_info {