openwrt/target/linux/ar7/patches-2.6.32/972-cpmac_multi_probe.patch

Index: linux-2.6.32.26/arch/mips/ar7/platform.c
===================================================================
--- linux-2.6.32.26.orig/arch/mips/ar7/platform.c	2010-11-24 13:16:31.367487844 -0800
+++ linux-2.6.32.26/arch/mips/ar7/platform.c	2010-11-24 13:16:49.677512306 -0800
@@ -33,7 +33,6 @@
 #include <linux/string.h>
 #include <linux/etherdevice.h>
 #include <linux/phy.h>
-#include <linux/phy_fixed.h>
 
 #include <asm/addrspace.h>
 #include <asm/mach-ar7/ar7.h>
@@ -46,7 +45,6 @@
 	int reset_bit;
 };
 
-
 static int vlynq_on(struct vlynq_device *dev)
 {
 	int result;
@@ -72,7 +70,8 @@
 
 	msleep(50);
 
-	gpio_set_value(pdata->gpio_bit, 1);
+	gpio_set_value(pdata->gpio_bit,
+			__vlynq_rev_reg(dev->local) < 0x00010205);
 	msleep(50);
 
 	return 0;
@@ -294,16 +293,10 @@
 	.width = 2,
 };
 
-static struct fixed_phy_status fixed_phy_status __initdata = {
-	.link = 1,
-	.speed = 100,
-	.duplex = 1,
-};
-
 static struct plat_cpmac_data cpmac_low_data = {
 	.reset_bit = 17,
 	.power_bit = 20,
-	.phy_mask = 0x80000000,
+	.phy_mask = 0xffffffff,
 };
 
 static struct plat_cpmac_data cpmac_high_data = {
@@ -716,11 +709,6 @@
 	}
 
 	if (ar7_has_high_cpmac()) {
-		res = fixed_phy_add(PHY_POLL, ar7_is_titan() ? cpmac_high_titan.id : cpmac_high.id,
-						&fixed_phy_status);
-		if (res && res != -ENODEV)
-			return res;
-
 		cpmac_get_mac(1, ar7_is_titan() ? cpmac_high_data_titan.dev_addr :
 						cpmac_high_data.dev_addr);
 		res = platform_device_register(ar7_is_titan() ? &cpmac_high_titan :
@@ -728,19 +716,8 @@
 
 		if (res)
 			return res;
-	} else {
-		if (ar7_is_titan())
-			cpmac_low_data_titan.phy_mask = 0xffffffff;
-		else
-			cpmac_low_data.phy_mask = 0xffffffff;
-
 	}
 
-	res = fixed_phy_add(PHY_POLL, ar7_is_titan() ? cpmac_low_titan.id :
-			cpmac_low.id, &fixed_phy_status);
-	if (res && res != -ENODEV)
-		return res;
-
 	cpmac_get_mac(0, ar7_is_titan() ? cpmac_low_data_titan.dev_addr :
 			cpmac_low_data.dev_addr);
 	res = platform_device_register(ar7_is_titan() ? &cpmac_low_titan :
Index: linux-2.6.32.26/arch/mips/include/asm/mach-ar7/ar7.h
===================================================================
--- linux-2.6.32.26.orig/arch/mips/include/asm/mach-ar7/ar7.h	2010-11-24 13:16:31.387502677 -0800
+++ linux-2.6.32.26/arch/mips/include/asm/mach-ar7/ar7.h	2010-11-24 13:16:37.117485679 -0800
@@ -41,6 +41,7 @@
 #define AR7_REGS_RESET	(AR7_REGS_BASE + 0x1600)
 #define AR7_REGS_VLYNQ0	(AR7_REGS_BASE + 0x1800)
 #define AR7_REGS_DCL	(AR7_REGS_BASE + 0x1a00)
+#define AR7_REGS_MII	(AR7_REGS_BASE + 0x1a08)
 #define AR7_REGS_VLYNQ1	(AR7_REGS_BASE + 0x1c00)
 #define AR7_REGS_MDIO	(AR7_REGS_BASE + 0x1e00)
 #define AR7_REGS_IRQ	(AR7_REGS_BASE + 0x2400)
Index: linux-2.6.32.26/drivers/net/cpmac.c
===================================================================
--- linux-2.6.32.26.orig/drivers/net/cpmac.c	2010-11-24 13:16:31.397493402 -0800
+++ linux-2.6.32.26/drivers/net/cpmac.c	2010-11-24 13:16:37.117485679 -0800
@@ -218,6 +218,12 @@
 static int cpmac_stop(struct net_device *dev);
 static int cpmac_open(struct net_device *dev);
 
+static struct fixed_phy_status fixed_phy_status = {
+	.link = 1,
+	.speed = 100,
+	.duplex = 1,
+};
+
 static void cpmac_dump_regs(struct net_device *dev)
 {
 	int i;
@@ -269,6 +275,18 @@
 	printk("\n");
 }
 
+static void auto_mdix_on(void)
+{
+	ar7_gpio_enable(28);
+	ar7_gpio_disable(30);
+}
+
+/*static void auto_mdix_off(void)
+{
+	ar7_gpio_disable(28);
+	ar7_gpio_disable(30);
+}*/
+
 static int cpmac_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 {
 	u32 val;
@@ -1104,8 +1122,6 @@
 	.ndo_set_mac_address	= eth_mac_addr,
 };
 
-static int external_switch;
-
 static int __devinit cpmac_probe(struct platform_device *pdev)
 {
 	int rc, phy_id;
@@ -1114,13 +1130,15 @@
 	struct cpmac_priv *priv;
 	struct net_device *dev;
 	struct plat_cpmac_data *pdata;
+	void __iomem *mii_reg;
+	u32 tmp;
+	unsigned external_mii;
 
 	pdata = pdev->dev.platform_data;
 
-	if (external_switch || dumb_switch) {
-		strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
-		phy_id = pdev->id;
-	} else {
+	if (dumb_switch)
+		phy_id = PHY_MAX_ADDR;
+	else for (external_mii = 0; external_mii <= 1; external_mii++) {
 		for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
 			if (!(pdata->phy_mask & (1 << phy_id)))
 				continue;
@@ -1129,13 +1147,45 @@
 			strncpy(mdio_bus_id, cpmac_mii->id, MII_BUS_ID_SIZE);
 			break;
 		}
+
+		if (phy_id == PHY_MAX_ADDR || external_mii || ar7_is_titan())
+			break;
+
+		/* Now disable EPHY and enable MII */
+		dev_info(&pdev->dev, "trying external MII\n");
+		ar7_device_disable(AR7_RESET_BIT_EPHY);
+
+		if (!ar7_has_high_cpmac()) {
+			mii_reg = ioremap(AR7_REGS_MII, 4);
+			if (!mii_reg) {
+				dev_err(&pdev->dev, "failed to iorenamp MII_SEL\n");
+				return -ENOMEM;
+		 	}
+
+			tmp = readl(mii_reg);
+			tmp |= 1;
+			writel(tmp, mii_reg);
+			iounmap(mii_reg);
+		}
+
+		ar7_gpio_disable(17);
+		mdelay(20);
+		ar7_gpio_enable(17);
 	}
 
 	if (phy_id == PHY_MAX_ADDR) {
-		dev_err(&pdev->dev, "no PHY present, falling back to switch mode\n");
+		/* This still does not work, so now we register a fixed phy */
+		dev_info(&pdev->dev, "using fixed PHY\n");
+		rc = fixed_phy_add(PHY_POLL, pdev->id, &fixed_phy_status);
+		if (rc && rc != -ENODEV) {
+			dev_err(&pdev->dev, "unable to register fixed PHY\n");
+			return rc;
+		}
+
 		strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
 		phy_id = pdev->id;
-	}
+	} else
+		auto_mdix_on();
 
 	dev = alloc_etherdev_mq(sizeof(*priv), CPMAC_QUEUES);
 
@@ -1244,14 +1294,14 @@
 	ar7_gpio_disable(26);
 	ar7_gpio_disable(27);
 
-	if (!ar7_is_titan()) {
+	if (ar7_is_titan()) {
+		ar7_device_reset(AR7_RESET_BIT_EPHY);
+		ar7_device_reset(TITAN_RESET_BIT_EPHY1);
+	} else {
 		ar7_device_reset(AR7_RESET_BIT_CPMAC_LO);
 		ar7_device_reset(AR7_RESET_BIT_CPMAC_HI);
-	}
-	ar7_device_reset(AR7_RESET_BIT_EPHY);
 
-	if (ar7_is_titan()) {
-		ar7_device_reset(TITAN_RESET_BIT_EPHY1);
+		ar7_device_reset(AR7_RESET_BIT_EPHY);
 	}
 
 	cpmac_mii->reset(cpmac_mii);
@@ -1262,12 +1312,6 @@
 		else
 			msleep(10);
 
-	mask &= 0x7fffffff;
-	if (mask & (mask - 1)) {
-		external_switch = 1;
-		mask = 0;
-	}
-
 	cpmac_mii->phy_mask = ar7_is_titan()? ~(mask | 0x80000000 | 0x40000000):
 		~(mask | 0x80000000);
 	snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "1");