From: Justin Lai <justinlai0215@realtek.com>
To: <kuba@kernel.org>
Cc: <davem@davemloft.net>, <edumazet@google.com>, <pabeni@redhat.com>,
<linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
<andrew@lunn.ch>, <jiri@resnulli.us>, <horms@kernel.org>,
<pkshih@realtek.com>, <larry.chiu@realtek.com>,
Justin Lai <justinlai0215@realtek.com>
Subject: [PATCH net-next v18 09/13] rtase: Implement pci_driver suspend and resume function
Date: Wed, 8 May 2024 20:39:41 +0800 [thread overview]
Message-ID: <20240508123945.201524-10-justinlai0215@realtek.com> (raw)
In-Reply-To: <20240508123945.201524-1-justinlai0215@realtek.com>
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>
---
.../net/ethernet/realtek/rtase/rtase_main.c | 51 +++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c
index 61f12a3b79eb..4928397d88a5 100644
--- a/drivers/net/ethernet/realtek/rtase/rtase_main.c
+++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c
@@ -2197,12 +2197,63 @@ 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);
--
2.34.1
next prev parent reply other threads:[~2024-05-08 12:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 12:39 [PATCH net-next v18 00/13] Add Realtek automotive PCIe driver Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 01/13] rtase: Add pci table supported in this module Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 02/13] rtase: Implement the .ndo_open function Justin Lai
2024-05-09 6:57 ` Ratheesh Kannoth
2024-05-09 8:58 ` Justin Lai
2024-05-09 9:09 ` Ratheesh Kannoth
2024-05-09 9:59 ` Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 03/13] rtase: Implement the rtase_down function Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 04/13] rtase: Implement the interrupt routine and rtase_poll Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 05/13] rtase: Implement hardware configuration function Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 06/13] rtase: Implement .ndo_start_xmit function Justin Lai
2024-05-10 16:40 ` Andrew Lunn
2024-05-13 3:07 ` Justin Lai
2024-05-13 3:43 ` Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 07/13] rtase: Implement a function to receive packets Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 08/13] rtase: Implement net_device_ops Justin Lai
2024-05-08 12:39 ` Justin Lai [this message]
2024-05-08 12:39 ` [PATCH net-next v18 10/13] rtase: Implement ethtool function Justin Lai
2024-05-10 3:40 ` Jakub Kicinski
2024-05-10 8:12 ` Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 11/13] rtase: Add a Makefile in the rtase folder Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 12/13] realtek: Update the Makefile and Kconfig in the realtek folder Justin Lai
2024-05-08 12:39 ` [PATCH net-next v18 13/13] MAINTAINERS: Add the rtase ethernet driver entry Justin Lai
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