From 4f3a09388f325ee4a6e3591bcd1b6224c88eb3e5 Mon Sep 17 00:00:00 2001
From: blogic <blogic@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 23 Oct 2009 16:51:51 +0000
Subject: [ramips] adds ethernet driver, esw needs to be moved to swconfig,
 driver is missing rt288x support, not a platform device yet

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18128 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 target/linux/ramips/files/drivers/net/ramips_esw.c | 119 +++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 target/linux/ramips/files/drivers/net/ramips_esw.c

(limited to 'target/linux/ramips/files/drivers/net/ramips_esw.c')

diff --git a/target/linux/ramips/files/drivers/net/ramips_esw.c b/target/linux/ramips/files/drivers/net/ramips_esw.c
new file mode 100644
index 000000000..58bbc3faa
--- /dev/null
+++ b/target/linux/ramips/files/drivers/net/ramips_esw.c
@@ -0,0 +1,119 @@
+#define GPIO_PRUPOSE           0x60
+#define GPIO_MDIO_BIT          (1<<7)
+#define RT305X_ESW_PHY_WRITE		(1 << 13)
+#define RT305X_ESW_PHY_TOUT			(5 * HZ)
+#define RT305X_ESW_PHY_CONTROL_0	0xC0
+#define RT305X_ESW_PHY_CONTROL_1	0xC4
+
+static void __iomem *ramips_esw_base = 0;
+
+static inline void
+ramips_esw_wr(u32 val, unsigned reg)
+{
+	__raw_writel(val, ramips_esw_base + reg);
+}
+
+static inline u32
+ramips_esw_rr(unsigned reg)
+{
+	return __raw_readl(ramips_esw_base + reg);
+}
+
+static void
+ramips_enable_mdio(int s)
+{
+	u32 gpio = rt305x_sysc_rr(GPIO_PRUPOSE);
+	if(s)
+		gpio &= ~GPIO_MDIO_BIT;
+	else
+		gpio |= GPIO_MDIO_BIT;
+	rt305x_sysc_wr(gpio, GPIO_PRUPOSE);
+}
+
+u32
+mii_mgr_write(u32 phy_addr, u32 phy_register, u32 write_data)
+{
+	unsigned long volatile t_start = jiffies;
+	int ret = 0;
+
+	ramips_enable_mdio(1);
+	while(1)
+	{
+		if(!(ramips_esw_rr(RT305X_ESW_PHY_CONTROL_1) & (0x1 << 0)))
+			break;
+		if(time_after(jiffies, t_start + RT305X_ESW_PHY_TOUT))
+		{
+			ret = 1;
+			goto out;
+		}
+	}
+	ramips_esw_wr(((write_data & 0xFFFF) << 16) | (phy_register << 8) |
+		(phy_addr) | RT305X_ESW_PHY_WRITE, RT305X_ESW_PHY_CONTROL_0);
+	t_start = jiffies;
+	while(1)
+	{
+		if(ramips_esw_rr(RT305X_ESW_PHY_CONTROL_1) & (0x1 << 0))
+			break;
+		if(time_after(jiffies, t_start + RT305X_ESW_PHY_TOUT))
+		{
+			ret = 1;
+			break;
+		}
+	}
+out:
+	ramips_enable_mdio(0);
+	if(ret)
+		printk(KERN_ERR "ramips_eth: MDIO timeout\n");
+	return ret;
+}
+
+static int
+rt305x_esw_init(void)
+{
+	int i;
+
+	ramips_esw_base = ioremap_nocache(RT305X_SWITCH_BASE, PAGE_SIZE);
+	if(!ramips_esw_base)
+		return -ENOMEM;
+
+	/* vodoo from original driver */
+	ramips_esw_wr(0xC8A07850, 0x08);
+	ramips_esw_wr(0x00000000, 0xe4);
+	ramips_esw_wr(0x00405555, 0x14);
+	ramips_esw_wr(0x00002001, 0x50);
+	ramips_esw_wr(0x00007f7f, 0x90);
+	ramips_esw_wr(0x00007f3f, 0x98);
+	ramips_esw_wr(0x00d6500c, 0xcc);
+	ramips_esw_wr(0x0008a301, 0x9c);
+	ramips_esw_wr(0x02404040, 0x8c);
+	ramips_esw_wr(0x00001002, 0x48);
+	ramips_esw_wr(0x3f502b28, 0xc8);
+	ramips_esw_wr(0x00000000, 0x84);
+
+	mii_mgr_write(0, 31, 0x8000);
+	for(i = 0; i < 5; i++)
+	{
+		mii_mgr_write(i, 0, 0x3100);   //TX10 waveform coefficient
+		mii_mgr_write(i, 26, 0x1601);   //TX10 waveform coefficient
+		mii_mgr_write(i, 29, 0x7058);   //TX100/TX10 AD/DA current bias
+		mii_mgr_write(i, 30, 0x0018);   //TX100 slew rate control
+	}
+	/* PHY IOT */
+	mii_mgr_write(0, 31, 0x0);      //select global register
+	mii_mgr_write(0, 22, 0x052f);   //tune TP_IDL tail and head waveform
+	mii_mgr_write(0, 17, 0x0fe0);   //set TX10 signal amplitude threshold to minimum
+	mii_mgr_write(0, 18, 0x40ba);   //set squelch amplitude to higher threshold
+	mii_mgr_write(0, 14, 0x65);     //longer TP_IDL tail length
+	mii_mgr_write(0, 31, 0x8000);   //select local register
+
+	/* Port 5 Disabled */
+	rt305x_sysc_wr(rt305x_sysc_rr(0x60) | (1 << 9), 0x60); //set RGMII to GPIO mode (GPIO41-GPIO50)
+	rt305x_sysc_wr(0xfff, 0x674); //GPIO41-GPIO50 output mode
+	rt305x_sysc_wr(0x0, 0x670); //GPIO41-GPIO50 output low
+
+	/* set default vlan */
+	ramips_esw_wr(0x2001, 0x50);
+	ramips_esw_wr(0x5041, 0x70);
+
+	return 0;
+}
-- 
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