Commit a46750a1 authored by MD Danish Anwar's avatar MD Danish Anwar Committed by David S. Miller
Browse files

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



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

Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarMD Danish Anwar <danishanwar@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8fb86b0d

drivers/net/ethernet/ti/icssg/icssg_prueth.c

+57 −0
Original line number Diff line number Diff line
@@ -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);