diff options
| author | MD Danish Anwar <danishanwar@ti.com> | 2023-08-01 14:44:28 +0530 |
|---|---|---|
| committer | Nishanth Menon <nm@ti.com> | 2023-08-02 00:01:16 -0500 |
| commit | bb32d20dabcc41805daba4e98a4d66eabdea679d (patch) | |
| tree | d20ade885c20b896e13cacdc82eb12dee82d7009 | |
| parent | 486a35317de38b701c3c913789374e7412a04c9d (diff) | |
| download | linux-master-pruss-test.tar.gz | |
net: ti: icssg-prueth: Add Power management supportmaster-pruss-test
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>
Link: https://lore.kernel.org/r/20230801091428.1359979-11-danishanwar@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
| -rw-r--r-- | drivers/net/ethernet/ti/icssg/icssg_prueth.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 80721d82f6c5fa..47b941fb0198dd 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -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); |