[v4,5/6] drm/rockchip: vop: restore vop registers when resume
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Message ID 1437962907-19229-1-git-send-email-mark.yao@rock-chips.com
State New
Headers show

Commit Message

yao mark July 27, 2015, 2:08 a.m. UTC
The registers will be reset to default values when whole
power domain off, so restore registers from regsbak.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---
Changes in v4: None

 drivers/gpu/drm/rockchip/rockchip_drm_vop.c |    1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 4a2923b..16b7d98 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -496,6 +496,7 @@  static void vop_enable(struct drm_crtc *crtc)
 		goto err_disable_aclk;
 	}
 
+	memcpy(vop->regs, vop->regsbak, vop->len);
 	/*
 	 * At here, vop clock & iommu is enable, R/W vop regs would be safe.
 	 */