Commit a25a0b07 authored by Justin Lai's avatar Justin Lai Committed by Jakub Kicinski
Browse files

rtase: Implement pci_driver suspend and resume function 



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: default avatarJustin Lai <justinlai0215@realtek.com>
Link: https://patch.msgid.link/20240904032114.247117-10-justinlai0215@realtek.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 07960048

drivers/net/ethernet/realtek/rtase/rtase_main.c

+51 −0
Original line number Diff line number Diff line
@@ -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);