From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.yao@rock-chips.com (Mark Yao) Date: Tue, 21 Jul 2015 16:27:27 +0800 Subject: [PATCH v3 5/6] drm/rockchip: vop: restore vop registers when resume In-Reply-To: <1437466807-13689-1-git-send-email-mark.yao@rock-chips.com> References: <1437466807-13689-1-git-send-email-mark.yao@rock-chips.com> Message-ID: <1437467247-13947-1-git-send-email-mark.yao@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The registers will be reset to default values when whole power domain off, so restore registers from regsbak. Signed-off-by: Mark Yao --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index e08f318..4dfad065 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -475,6 +475,7 @@ 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. */ -- 1.7.9.5