From: Mark Yao <yzq@rock-chips.com>
Date: Wed, 1 Apr 2015 05:48:53 +0000 (+0800)
Subject: drm/rockchip: vop: add vop power domain support
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5d82d1a785155fe4ff65628a88b677cfacea863b;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

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>
---

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);
 }
 
 /*