From 4c31778fc4c4c92194f04a9cc3c4cabd22d6293a Mon Sep 17 00:00:00 2001
From: florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sat, 23 Jun 2012 11:03:35 +0000
Subject: [mcs814x] remove platform specific initialization from ethernet
 driver

Hardware filtering must always be enabled as long as there is an Ethernet
device registered, and use device tree for setting the link activity and
buffer shifting enable/disable bit.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32486 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../files-3.3/arch/arm/mach-mcs814x/common.c       | 77 +++++++++++++++++++++-
 1 file changed, 74 insertions(+), 3 deletions(-)

(limited to 'target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x')

diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.c b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.c
index a408e6928..c593561e2 100644
--- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.c
+++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/common.c
@@ -12,6 +12,8 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -30,9 +32,12 @@ static struct map_desc mcs814x_io_desc[] __initdata = {
 	},
 };
 
-#define SYSDBG_BS2	0x04
-#define CPU_MODE_SHIFT	23
-#define CPU_MODE_MASK	0x03
+#define SYSDBG_BS2		0x04
+#define  LED_CFG_MASK		0x03
+#define  CPU_MODE_SHIFT		23
+#define  CPU_MODE_MASK		0x03
+
+#define SYSDBG_SYSCTL_MAC	0x1d
 
 struct cpu_mode {
 	const char *name;
@@ -63,6 +68,70 @@ static const struct cpu_mode cpu_modes[] = {
 	},
 };
 
+static void mcs814x_eth_hardware_filter_set(u8 value)
+{
+	u32 reg;
+
+	reg = __raw_readl(_CONFADDR_DBGLED);
+	if (value)
+		reg |= 0x80;
+	else
+		reg &= ~0x80;
+	__raw_writel(reg, _CONFADDR_DBGLED);
+}
+
+static void mcs814x_eth_led_cfg_set(u8 cfg)
+{
+	u32 reg;
+
+	reg = __raw_readl(_CONFADDR_SYSDBG + SYSDBG_BS2);
+	reg &= ~LED_CFG_MASK;
+	reg |= cfg;
+	__raw_writel(reg, _CONFADDR_SYSDBG + SYSDBG_BS2);
+}
+
+static void mcs814x_eth_buffer_shifting_set(u8 value)
+{
+	u8 reg;
+
+	reg = __raw_readb(_CONFADDR_SYSDBG + SYSDBG_SYSCTL_MAC);
+	if (value)
+		reg |= 0x01;
+	else
+		reg &= ~0x01;
+	__raw_writeb(reg, _CONFADDR_SYSDBG + SYSDBG_SYSCTL_MAC);
+}
+
+static struct of_device_id mcs814x_eth_ids[] __initdata = {
+	{ .compatible = "moschip,nuport-mac", },
+	{ /* sentinel */ },
+};
+
+/* Configure platform specific knobs based on ethernet device node
+ * properties */
+static void mcs814x_eth_init(void)
+{
+	struct device_node *np;
+	const unsigned int *intspec;
+
+	np = of_find_matching_node(NULL, mcs814x_eth_ids);
+	if (!np)
+		return;
+
+	/* hardware filter must always be enabled */
+	mcs814x_eth_hardware_filter_set(1);
+
+	intspec = of_get_property(np, "nuport-mac,buffer-shifting", NULL);
+	if (!intspec)
+		mcs814x_eth_buffer_shifting_set(0);
+	else
+		mcs814x_eth_buffer_shifting_set(1);
+
+	intspec = of_get_property(np, "nuport-mac,link-activity", NULL);
+	if (intspec)
+		mcs814x_eth_led_cfg_set(be32_to_cpup(intspec));
+}
+
 void __init mcs814x_init_machine(void)
 {
 	u32 bs2, cpu_mode;
@@ -79,6 +148,8 @@ void __init mcs814x_init_machine(void)
 		if (gpio != -1)
 			gpio_request(gpio, cpu_modes[cpu_mode].name);
 	}
+
+	mcs814x_eth_init();
 }
 
 void __init mcs814x_map_io(void)
-- 
cgit v1.2.3