drm/rockchip: vop: add vop power domain support

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

Signed-off-by: Mark Yao <yzq@rock-chips.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 6115898efe6b..ccb0ce073ef2 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);
 }
 
 /*