netdev - [PATCH 2/4] net: stmmac: dwmac-rk: add pd

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Message-Id: <1472589008-7713-3-git-send-email-wxt@rock-chips.com>
Date:   Wed, 31 Aug 2016 04:30:05 +0800
From:   Caesar Wang <wxt@...k-chips.com>
To:     Heiko Stuebner <heiko@...ech.de>, netdev@...r.kernel.org
Cc:     linux-rockchip@...ts.infradead.org,
        Brian Norris <briannorris@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        dbasehore@...omium.org, David Wu <david.wu@...k-chips.com>,
        Caesar Wang <wxt@...k-chips.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] net: stmmac: dwmac-rk: add pd_gmac support for rk3399

From: David Wu <david.wu@...k-chips.com>

Add the gmac power domain support for rk3399, in order to save more
power consumption.

Signed-off-by: David Wu <david.wu@...k-chips.com>
Signed-off-by: Caesar Wang <wxt@...k-chips.com>
---

 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index ea0e493..71a1ca5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -30,6 +30,7 @@
 #include <linux/delay.h>
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
+#include <linux/pm_runtime.h>
 
 #include "stmmac_platform.h"
 
@@ -660,11 +661,17 @@ static int rk_gmac_init(struct platform_device *pdev, void *priv)
 	if (ret)
 		return ret;
 
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
+
 	return 0;
 }
 
 static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 {
+	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
 	phy_power_on(gmac, false);
 	gmac_clk_enable(gmac, false);
 }
-- 
1.9.1