drm: rcar-du: Use the VBK interrupt for vblank events
authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Mon, 10 Jul 2017 20:46:39 +0000 (23:46 +0300)
committerLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Thu, 3 Aug 2017 13:17:26 +0000 (16:17 +0300)
commitcbbb90b0c084d7dfb2ed8e3fecf8df200fbdd2a0
tree885d7d402cbd8169fef8fdbe59c9a0124af84701
parent776c5d000ba5401dc338b172e1e88b02e6b37216
drm: rcar-du: Use the VBK interrupt for vblank events

When implementing support for interlaced modes, the driver switched from
reporting vblank events on the vertical blanking (VBK) interrupt to the
frame end interrupt (FRM). This incorrectly divided the reported refresh
rate by two. Fix it by moving back to the VBK interrupt.

Fixes: 906eff7fcada ("drm: rcar-du: Implement support for interlaced modes")
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
drivers/gpu/drm/rcar-du/rcar_du_crtc.c