From: yxj <yxj@rock-chips.com>
Date: Thu, 17 Apr 2014 06:16:30 +0000 (+0800)
Subject: rk32 edp:add power domain support
X-Git-Tag: firefly_0821_release~5533
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e2c551b8397b177819f477558b49da77524c1ee3;p=firefly-linux-kernel-4.4.55.git

rk32 edp:add power domain support
---

diff --git a/drivers/video/rockchip/transmitter/rk32_dp.c b/drivers/video/rockchip/transmitter/rk32_dp.c
index 8de29482f241..86b596bc1607 100644
--- a/drivers/video/rockchip/transmitter/rk32_dp.c
+++ b/drivers/video/rockchip/transmitter/rk32_dp.c
@@ -44,6 +44,7 @@ static struct rk32_edp *rk32_edp;
 static int rk32_edp_clk_enable(struct rk32_edp *edp)
 {
 	if (!edp->clk_on) {
+		clk_enable(edp->pd);
 		clk_enable(edp->pclk);
 		clk_enable(edp->clk_edp);
 		clk_enable(edp->clk_24m);
@@ -59,6 +60,7 @@ static int rk32_edp_clk_disable(struct rk32_edp *edp)
 		clk_disable(edp->pclk);
 		clk_disable(edp->clk_edp);
 		clk_disable(edp->clk_24m);
+		clk_disable(edp->pd);
 		edp->clk_on = false;
 	}
 
@@ -1319,6 +1321,10 @@ static int rk32_edp_probe(struct platform_device *pdev)
 		return PTR_ERR(edp->regs);
 	}
 
+	edp->pd = devm_clk_get(&pdev->dev,"pd_edp");
+	if (IS_ERR(edp->pd)) {
+		dev_err(&pdev->dev, "cannot get pd\n");
+	}
 	edp->clk_edp = devm_clk_get(&pdev->dev,"clk_edp");
 	if (IS_ERR(edp->clk_edp)) {
 		dev_err(&pdev->dev, "cannot get clk_edp\n");
@@ -1336,7 +1342,7 @@ static int rk32_edp_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "cannot get pclk\n");
 		return PTR_ERR(edp->pclk);
 	}
-
+	clk_prepare(edp->pd);
 	clk_prepare(edp->pclk);
 	clk_prepare(edp->clk_edp);
 	clk_prepare(edp->clk_24m);
diff --git a/drivers/video/rockchip/transmitter/rk32_dp.h b/drivers/video/rockchip/transmitter/rk32_dp.h
index dc48e5c4eba5..de90cf29dc45 100644
--- a/drivers/video/rockchip/transmitter/rk32_dp.h
+++ b/drivers/video/rockchip/transmitter/rk32_dp.h
@@ -514,6 +514,7 @@ struct rk32_edp {
 	struct device 		*dev;
 	void __iomem  		*regs;
 	unsigned int  		irq;
+	struct clk		*pd;
 	struct clk    		*clk_edp;  /*clk for edp controller*/
 	struct clk    		*clk_24m;  /*clk for edp phy*/
 	struct clk		*pclk;	   /*clk for phb bus*/