Commit 35b78409 authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Paolo Abeni
Browse files

rswitch: Add PM ops 



Add PM ops for Suspend to Idle. When the system suspended,
the Ethernet Serdes's clock will be stopped. So, this driver needs
to re-initialize the Ethernet Serdes by phy_init() in
renesas_eth_sw_resume(). Otherwise, timeout happened in phy_power_on().

Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 1bf55630

drivers/net/ethernet/renesas/rswitch.c

+43 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/of_net.h>

#include <linux/phy/phy.h>

#include <linux/platform_device.h>

#include <linux/pm.h>

#include <linux/pm_runtime.h>

#include <linux/rtnetlink.h>

#include <linux/slab.h>
@@ -1315,6 +1316,7 @@ static int rswitch_phy_device_init(struct rswitch_device *rdev) 
	if (!phydev)

		goto out;

	__set_bit(rdev->etha->phy_interface, phydev->host_interfaces);

	phydev->mac_managed_pm = true;



	phydev = of_phy_connect(rdev->ndev, phy, rswitch_adjust_link, 0,

				rdev->etha->phy_interface);
@@ -1995,11 +1997,52 @@ static void renesas_eth_sw_remove(struct platform_device *pdev) 
	platform_set_drvdata(pdev, NULL);

}



static int renesas_eth_sw_suspend(struct device *dev)

{

	struct rswitch_private *priv = dev_get_drvdata(dev);

	struct net_device *ndev;

	unsigned int i;



	rswitch_for_each_enabled_port(priv, i) {

		ndev = priv->rdev[i]->ndev;

		if (netif_running(ndev)) {

			netif_device_detach(ndev);

			rswitch_stop(ndev);

		}

		if (priv->rdev[i]->serdes->init_count)

			phy_exit(priv->rdev[i]->serdes);

	}



	return 0;

}



static int renesas_eth_sw_resume(struct device *dev)

{

	struct rswitch_private *priv = dev_get_drvdata(dev);

	struct net_device *ndev;

	unsigned int i;



	rswitch_for_each_enabled_port(priv, i) {

		phy_init(priv->rdev[i]->serdes);

		ndev = priv->rdev[i]->ndev;

		if (netif_running(ndev)) {

			rswitch_open(ndev);

			netif_device_attach(ndev);

		}

	}



	return 0;

}



static DEFINE_SIMPLE_DEV_PM_OPS(renesas_eth_sw_pm_ops, renesas_eth_sw_suspend,

				renesas_eth_sw_resume);



static struct platform_driver renesas_eth_sw_driver_platform = {

	.probe = renesas_eth_sw_probe,

	.remove_new = renesas_eth_sw_remove,

	.driver = {

		.name = "renesas_eth_sw",

		.pm = pm_sleep_ptr(&renesas_eth_sw_pm_ops),

		.of_match_table = renesas_eth_sw_of_table,

	}

};