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drm/rockchip: vop: make vop register setting take effect

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The setting of vop registers need a reg_done writing to take effect.
In vop_enable the vop return to work by by restoring registers, but the
registers do not take effect immediately, it should a vop_cfg_done
after it. The same thing is needed by windows_disabled in
vop_crtc_disable.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
This commit is contained in:
Chris Zhong 2016-08-26 20:39:38 -07:00 committed by Mark Yao
parent 99743ae4c5
commit 17a794d768
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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@ -531,6 +531,8 @@ static int vop_enable(struct drm_crtc *crtc)
}
memcpy(vop->regs, vop->regsbak, vop->len);
vop_cfg_done(vop);
/*
* At here, vop clock & iommu is enable, R/W vop regs would be safe.
*/
@ -582,6 +584,8 @@ static void vop_crtc_disable(struct drm_crtc *crtc)
spin_unlock(&vop->reg_lock);
}
vop_cfg_done(vop);
drm_crtc_vblank_off(crtc);
/*