net: stmmac: dwmac-rk: add pd_gmac support for rk3399

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

Signed-off-by: David Wu <[email protected]>
Signed-off-by: Caesar Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index e2ba6c4619fdef9e8a5fb8e882fff3402c9e013e..3740a4417fa0297c2631a08785dd9345e7cb0371 100644 (file)
--- 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"
 
@@ -883,11 +884,19 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
        if (ret)
                return ret;
 
+       pm_runtime_enable(dev);
+       pm_runtime_get_sync(dev);
+
        return 0;
 }
 
 static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 {
+       struct device *dev = &gmac->pdev->dev;
+
+       pm_runtime_put_sync(dev);
+       pm_runtime_disable(dev);
+
        phy_power_on(gmac, false);
        gmac_clk_enable(gmac, false);
 }