linux-kernel - [PATCH] [NETDEV] [004] dmfe : Add suspend/resume support

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Message-ID: <549393.8054.qm@web38506.mail.mud.yahoo.com>
Date:	Wed, 7 Feb 2007 10:33:55 -0800 (PST)
From:	Levitsky Maxim <maximlevitsky@...oo.com>
To:	linux-kernel@...r.kernel.org
Cc:	tori@...appy.mine.nu, netdev@...r.kernel.org, pavel@...e.cz
Subject: [PATCH] [NETDEV] [004] dmfe : Add suspend/resume support

From: Maxim Levitsky <maximlevitsky@...oo.com>
Subject: [PATCH] [NETDEV] [004] dmfe : Add suspend/resume support

Adds support for suspend/resume

---


--- linux-2.6.20-mod/drivers/net/tulip/dmfe.c   2007-02-07 18:46:13.000000000 +0200
+++ linux-2.6.20-test/drivers/net/tulip/dmfe.c  2007-02-07 18:50:52.000000000 +0200
@@ -55,9 +55,6 @@
 
     TODO
 
-    Implement pci_driver::suspend() and pci_driver::resume()
-    power management methods.
-
     Check on 64 bit boxes.
     Check and fix on big endian boxes.
 
@@ -2027,11 +2024,59 @@ static struct pci_device_id dmfe_pci_tbl
 MODULE_DEVICE_TABLE(pci, dmfe_pci_tbl);
 
 
+
+static int dmfe_suspend(struct pci_dev *pci_dev, pm_message_t state)
+{
+    u32 tmp;
+
+    struct net_device *dev = pci_get_drvdata(pci_dev);
+    struct dmfe_board_info *db = netdev_priv(dev);
+    
+    /* Disable upper layer interface */
+    netif_device_detach(dev);
+    
+    /* Disable Tx/Rx */
+    db->cr6_data &= ~(CR6_RXSC | CR6_TXSC);    
+    update_cr6(db->cr6_data, dev->base_addr);
+    
+    /* Disable Interrupt */
+    outl(0, dev->base_addr + DCR7);            
+    outl(inl(dev->base_addr + DCR5), dev->base_addr + DCR5);
+    
+    /* Fre RX buffers */
+    dmfe_free_rxbuffer(db);
+
+    /* Power down device*/
+    pci_set_power_state(pci_dev ,  pci_choose_state(pci_dev,state));
+    pci_save_state(pci_dev);
+
+    return 0;
+}
+
+static int dmfe_resume(struct pci_dev *pci_dev)
+{
+    struct net_device *dev = pci_get_drvdata(pci_dev);
+    u32 tmp;
+
+    pci_restore_state(pci_dev);
+    pci_set_power_state(pci_dev ,PCI_D0);
+    
+    /* Re-initilize DM910X board */
+    dmfe_init_dm910x(dev);
+        
+    /* Restart upper layer interface */
+    netif_device_attach(dev);
+
+    return 0;
+}
+
 static struct pci_driver dmfe_driver = {
        .name           = "dmfe",
        .id_table       = dmfe_pci_tbl,
        .probe          = dmfe_init_one,
        .remove         = __devexit_p(dmfe_remove_one),
+        .suspend        = dmfe_suspend,
+        .resume         = dmfe_resume
 };
 
 MODULE_AUTHOR("Sten Wang, sten_wang@...icom.com.tw");



 
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