From 9257a91d4d912d7be0d37f0ceaa6a1936eceef95 Mon Sep 17 00:00:00 2001
From: William Wu <william.wu@rock-chips.com>
Date: Mon, 8 Apr 2019 09:27:14 +0800
Subject: [PATCH] phy: rockchip-inno-usb2: add basic runtime PM support

Adds pm_runtime support for some rockchip SoCs (e.g. rk3399)
which support power domain for USB 2.0 PHY.

Change-Id: I4c78075c884b3baf6d709e08e3464b214524d685
Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
---
 drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index e91ccecaebbe..cee7c1c17d1f 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -22,6 +22,7 @@
 #include <linux/of_platform.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/power_supply.h>
 #include <linux/regmap.h>
 #include <linux/mfd/syscon.h>
@@ -1814,6 +1815,10 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+
 	rphy->clk = of_clk_get_by_name(np, "phyclk");
 	if (!IS_ERR(rphy->clk)) {
 		clk_prepare_enable(rphy->clk);
@@ -1892,6 +1897,8 @@ next_child:
 put_child:
 	of_node_put(child_np);
 disable_clks:
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
 	if (rphy->clk) {
 		clk_disable_unprepare(rphy->clk);
 		clk_put(rphy->clk);