eepro100.c - Add option to disable power saving in 2.4.7-ac7

@@ -60,6 +60,8 @@
 static int full_duplex[] = {-1, -1, -1, -1, -1, -1, -1, -1};
 static int options[] = {-1, -1, -1, -1, -1, -1, -1, -1};
 static int debug = -1;			/* The debug level */
+/* power_save option */
+static int power_save = 1;
 
 /* A few values that may be tweaked. */
 /* The ring sizes should be a power of two for efficiency. */

@@ -125,6 +127,7 @@
 MODULE_PARM(rx_copybreak, "i");
 MODULE_PARM(max_interrupt_work, "i");
 MODULE_PARM(multicast_filter_limit, "i");
+MODULE_PARM(power_save, "i");
 MODULE_PARM_DESC(debug, "eepro100 debug level (0-6)");
 MODULE_PARM_DESC(options, "eepro100: Bits 0-3: tranceiver type, bit 4: full duplex, bit 5: 100Mbps");
 MODULE_PARM_DESC(full_duplex, "eepro100 full duplex setting(s) (1)");

@@ -136,6 +139,7 @@
 MODULE_PARM_DESC(rx_copybreak, "eepro100 copy breakpoint for copy-only-tiny-frames");
 MODULE_PARM_DESC(max_interrupt_work, "eepro100 maximum events handled per interrupt");
 MODULE_PARM_DESC(multicast_filter_limit, "eepro100 maximum number of filtered multicast addresses");
+MODULE_PARM_DESC(power_save, "Disable/Enable power saving (0,1). Default 1.");
 
 #define RUN_AT(x) (jiffies + (x))
 

@@ -778,7 +782,11 @@
 	udelay(10);
 
 	/* Put chip into power state D2 until we open() it. */
-	pci_set_power_state(pdev, 2);
+	if ((power_save < 0) || (power_save > 1))
+	  power_save = 1;
+	printk(KERN_INFO "  power_save = %d.\n",power_save);
+	if (power_save)
+	  pci_set_power_state(pdev, 2);
 
 	pci_set_drvdata (pdev, dev);
 

@@ -902,7 +910,8 @@
 
 	MOD_INC_USE_COUNT;
 
-	pci_set_power_state(sp->pdev, 0);
+	if (power_save)
+	  pci_set_power_state(sp->pdev, 0);
 
 	/* Set up the Tx queue early.. */
 	sp->cur_tx = 0;

@@ -1833,7 +1842,8 @@
 	if (speedo_debug > 0)
 		printk(KERN_DEBUG "%s: %d multicast blocks dropped.\n", dev->name, i);
 
-	pci_set_power_state(sp->pdev, 2);
+	if (power_save)
+	  pci_set_power_state(sp->pdev, 2);
 
 	MOD_DEC_USE_COUNT;
 

@@ -1902,12 +1912,14 @@
 		   They are currently serialized only with MDIO access from the
 		   timer routine.  2000/05/09 SAW */
 		saved_acpi = sp->pdev->current_state;
-		pci_set_power_state(sp->pdev, 0);
+		if (power_save)
+		  pci_set_power_state(sp->pdev, 0);
 		t = del_timer_sync(&sp->timer);
 		data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f);
 		if (t)
 			add_timer(&sp->timer); /* may be set to the past  --SAW */
-		pci_set_power_state(sp->pdev, saved_acpi);
+		if (power_save)
+		  pci_set_power_state(sp->pdev, saved_acpi);
 		return 0;
 
 	case SIOCSMIIREG:		/* Write MII PHY register. */

@@ -1915,12 +1927,14 @@
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
 		saved_acpi = sp->pdev->current_state;
-		pci_set_power_state(sp->pdev, 0);
+		if (power_save)
+		  pci_set_power_state(sp->pdev, 0);
 		t = del_timer_sync(&sp->timer);
 		mdio_write(ioaddr, data->phy_id, data->reg_num, data->val_in);
 		if (t)
 			add_timer(&sp->timer); /* may be set to the past  --SAW */
-		pci_set_power_state(sp->pdev, saved_acpi);
+		if (power_save)
+		  pci_set_power_state(sp->pdev, saved_acpi);
 		return 0;
 	default:
 		return -EOPNOTSUPP;

@@ -60,6 +60,8 @@
 static int full_duplex[] = {-1, -1, -1, -1, -1, -1, -1, -1};
 static int options[] = {-1, -1, -1, -1, -1, -1, -1, -1};
 static int debug = -1;			/* The debug level */
+/* power save D state when device is not open */
+static unsigned int sleep_state = 2;
 
 /* A few values that may be tweaked. */
 /* The ring sizes should be a power of two for efficiency. */

@@ -125,6 +127,7 @@
 MODULE_PARM(rx_copybreak, "i");
 MODULE_PARM(max_interrupt_work, "i");
 MODULE_PARM(multicast_filter_limit, "i");
+MODULE_PARM(sleep_state, "i");
 MODULE_PARM_DESC(debug, "eepro100 debug level (0-6)");
 MODULE_PARM_DESC(options, "eepro100: Bits 0-3: tranceiver type, bit 4: full duplex, bit 5: 100Mbps");
 MODULE_PARM_DESC(full_duplex, "eepro100 full duplex setting(s) (1)");

@@ -136,6 +139,7 @@
 MODULE_PARM_DESC(rx_copybreak, "eepro100 copy breakpoint for copy-only-tiny-frames");
 MODULE_PARM_DESC(max_interrupt_work, "eepro100 maximum events handled per interrupt");
 MODULE_PARM_DESC(multicast_filter_limit, "eepro100 maximum number of filtered multicast addresses");
+MODULE_PARM_DESC(sleep_state, "eepro100 power save D state (default 2)");
 
 #define RUN_AT(x) (jiffies + (x))
 

@@ -777,8 +781,10 @@
 	inl(ioaddr + SCBPort);
 	udelay(10);
 
-	/* Put chip into power state D2 until we open() it. */
-	pci_set_power_state(pdev, 2);
+	if (sleep_state > 2)
+		sleep_state = 2;
+	/* Put chip into power saving state until we open() it. */
+	pci_set_power_state(pdev, sleep_state);
 
 	pci_set_drvdata (pdev, dev);
 

@@ -1833,7 +1839,7 @@
 	if (speedo_debug > 0)
 		printk(KERN_DEBUG "%s: %d multicast blocks dropped.\n", dev->name, i);
 
-	pci_set_power_state(sp->pdev, 2);
+	pci_set_power_state(sp->pdev, sleep_state);
 
 	MOD_DEC_USE_COUNT;