From: Mark Yao yzq@rock-chips.com

Reference the power domain incase vop power down when in use.

Signed-off-by: Mark Yao yzq@rock-chips.com --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index d041921..7a61c8e 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -421,6 +421,12 @@ static void vop_enable(struct drm_crtc *crtc) if (vop->is_enabled) return;

+ ret = pm_runtime_get_sync(vop->dev); + if (ret < 0) { + dev_err(vop->dev, "failed to get pm runtime: %d\n", ret); + return; + } + ret = clk_enable(vop->hclk); if (ret < 0) { dev_err(vop->dev, "failed to enable hclk - %d\n", ret); @@ -517,6 +523,7 @@ static void vop_disable(struct drm_crtc *crtc) clk_disable(vop->dclk); clk_disable(vop->aclk); clk_disable(vop->hclk); + pm_runtime_put(vop->dev); }

/*