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net: ti: icssg-prueth: Add Power management support

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Add suspend / resume APIs to support power management in ICSSG ethernet
driver.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
MD Danish Anwar
2023-08-01 14:44:28 +05:30
committed by David S. Miller
parent 8fb86b0dca
commit a46750a13b
1 changed files with 57 additions and 0 deletions
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57
drivers/net/ethernet/ti/icssg/icssg_prueth.c
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@@ -1813,6 +1813,62 @@ static void prueth_remove(struct platform_device *pdev)
prueth_put_cores(prueth, ICSS_SLICE0);
}
#ifdef CONFIG_PM_SLEEP
static int prueth_suspend(struct device *dev)
{
struct prueth *prueth = dev_get_drvdata(dev);
struct net_device *ndev;
int i, ret;
for (i = 0; i < PRUETH_NUM_MACS; i++) {
ndev = prueth->registered_netdevs[i];
if (!ndev)
continue;
if (netif_running(ndev)) {
netif_device_detach(ndev);
ret = emac_ndo_stop(ndev);
if (ret < 0) {
netdev_err(ndev, "failed to stop: %d", ret);
return ret;
}
}
}
return 0;
}
static int prueth_resume(struct device *dev)
{
struct prueth *prueth = dev_get_drvdata(dev);
struct net_device *ndev;
int i, ret;
for (i = 0; i < PRUETH_NUM_MACS; i++) {
ndev = prueth->registered_netdevs[i];
if (!ndev)
continue;
if (netif_running(ndev)) {
ret = emac_ndo_open(ndev);
if (ret < 0) {
netdev_err(ndev, "failed to start: %d", ret);
return ret;
}
netif_device_attach(ndev);
}
}
return 0;
}
#endif /* CONFIG_PM_SLEEP */
static const struct dev_pm_ops prueth_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(prueth_suspend, prueth_resume)
};
static const struct prueth_pdata am654_icssg_pdata = {
.fdqring_mode = K3_RINGACC_RING_MODE_MESSAGE,
.quirk_10m_link_issue = 1,
@@ -1830,6 +1886,7 @@ static struct platform_driver prueth_driver = {
.driver = {
.name = "icssg-prueth",
.of_match_table = prueth_dt_match,
.pm = &prueth_dev_pm_ops,
},
};
module_platform_driver(prueth_driver);