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[v1,1/2] drm: rcar-du: Enable the FRM interrupt for vblank

Message ID 0e5b1635470b06924a0bc00ee1f4791602285ca5.1498744799.git-series.kieran.bingham+renesas@ideasonboard.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kieran Bingham June 29, 2017, 2:02 p.m. UTC 
The rcar_du_crtc_{enable,disable}_vblank functions are configured to
control the VBE interrupt event.

The implementation of interlaced support in the rcar-du changes the
required behavior such that vblanks are handled on frame end events, but
does not update the enable register to reflect this.

Enable the FRM interrupt in the DIER register using the FRE bit.

Fixes: 906eff7fcada ("drm: rcar-du: Implement support for interlaced
modes")

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 345eff72f581..9f53a8243941 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -620,7 +620,7 @@  static int rcar_du_crtc_enable_vblank(struct drm_crtc *crtc)
 	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
 
 	rcar_du_crtc_write(rcrtc, DSRCR, DSRCR_VBCL);
-	rcar_du_crtc_set(rcrtc, DIER, DIER_VBE);
+	rcar_du_crtc_set(rcrtc, DIER, DIER_FRE);
 
 	return 0;
 }
@@ -629,7 +629,7 @@  static void rcar_du_crtc_disable_vblank(struct drm_crtc *crtc)
 {
 	struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
 
-	rcar_du_crtc_clr(rcrtc, DIER, DIER_VBE);
+	rcar_du_crtc_clr(rcrtc, DIER, DIER_FRE);
 }
 
 static const struct drm_crtc_funcs crtc_funcs = {