Commit cbbb90b0 authored Jul 10, 2017 by Laurent Pinchart

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: 906eff7f ("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>

parent 776c5d00

drivers/gpu/drm/rcar-du/rcar_du_crtc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -698,7 +698,7 @@ static irqreturn_t rcar_du_crtc_irq(int irq, void *arg)
		status = rcar_du_crtc_read(rcrtc, DSSR);
		rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK);

		if (status & DSSR_FRM) {
		if (status & DSSR_VBK) {
		drm_crtc_handle_vblank(&rcrtc->crtc);

		if (rcdu->info->gen < 3)

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