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rtase: Implement pci_driver suspend and resume function

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Implement the pci_driver suspend function to enable the device
to sleep, and implement the resume function to enable the device
to resume operation.

Signed-off-by: Justin Lai <justinlai0215@realtek.com>
Link: https://patch.msgid.link/20240904032114.247117-10-justinlai0215@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Justin Lai
2024-09-04 11:21:10 +08:00
committed by Jakub Kicinski
parent 0796004899
commit a25a0b070c
1 changed files with 51 additions and 0 deletions
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51
drivers/net/ethernet/realtek/rtase/rtase_main.c
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@@ -2151,12 +2151,63 @@ static void rtase_shutdown(struct pci_dev *pdev)
rtase_reset_interrupt(pdev, tp);
}
static int rtase_suspend(struct device *device)
{
struct net_device *dev = dev_get_drvdata(device);
if (netif_running(dev)) {
netif_device_detach(dev);
rtase_hw_reset(dev);
}
return 0;
}
static int rtase_resume(struct device *device)
{
struct net_device *dev = dev_get_drvdata(device);
struct rtase_private *tp = netdev_priv(dev);
int ret;
/* restore last modified mac address */
rtase_rar_set(tp, dev->dev_addr);
if (!netif_running(dev))
goto out;
rtase_wait_for_quiescence(dev);
rtase_tx_clear(tp);
rtase_rx_clear(tp);
ret = rtase_init_ring(dev);
if (ret) {
netdev_err(dev, "unable to init ring\n");
rtase_free_desc(tp);
return -ENOMEM;
}
rtase_hw_config(dev);
/* always link, so start to transmit & receive */
rtase_hw_start(dev);
netif_device_attach(dev);
out:
return 0;
}
static const struct dev_pm_ops rtase_pm_ops = {
SYSTEM_SLEEP_PM_OPS(rtase_suspend, rtase_resume)
};
static struct pci_driver rtase_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = rtase_pci_tbl,
.probe = rtase_init_one,
.remove = rtase_remove_one,
.shutdown = rtase_shutdown,
.driver.pm = pm_ptr(&rtase_pm_ops),
};
module_pci_driver(rtase_pci_driver);