diff options
| author |  Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
| 2023-10-17 20:34:02 +0900 |
|---|---|---|
| committer |  Paolo Abeni <pabeni@redhat.com>
| 2023-10-19 10:59:33 +0200 |
| commit | 35b78409e1c7fff0f209f0aed7297e9fca13351d (patch) | |
| tree | 32aecbb404ea8ee20ce0103af8623a5d7386d0e9 /drivers/net/ethernet/renesas/rswitch.c | |
| parent | rswitch: Use unsigned int for port related array index (diff) | |
| download | linux-35b78409e1c7fff0f209f0aed7297e9fca13351d.tar.gz linux-35b78409e1c7fff0f209f0aed7297e9fca13351d.tar.bz2 linux-35b78409e1c7fff0f209f0aed7297e9fca13351d.zip | |
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: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/renesas/rswitch.c')
| -rw-r--r-- | drivers/net/ethernet/renesas/rswitch.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index e5a41e7880d8..43a7795d6591 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -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, } }; |