freifunkist-firmware/target/linux/ixp4xx/patches-2.6.24/300-avila_fetch_mac.patch

Index: linux-2.6.24.2/arch/arm/mach-ixp4xx/avila-setup.c
===================================================================
--- linux-2.6.24.2.orig/arch/arm/mach-ixp4xx/avila-setup.c
+++ linux-2.6.24.2/arch/arm/mach-ixp4xx/avila-setup.c
@@ -14,10 +14,18 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/if_ether.h>
+#include <linux/socket.h>
+#include <linux/netdevice.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
 #include <linux/slab.h>
+#ifdef CONFIG_SENSORS_EEPROM
+# include <linux/i2c.h>
+# include <linux/eeprom.h>
+#endif
+
 #include <linux/i2c-gpio.h>
 
 #include <asm/types.h>
@@ -29,6 +37,13 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 
+struct avila_board_info {
+	unsigned char	*model;
+	void		(* setup)(void);
+};
+
+static struct avila_board_info *avila_info __initdata;
+
 static struct flash_platform_data avila_flash_data = {
 	.map_name	= "cfi_probe",
 	.width		= 2,
@@ -192,10 +207,160 @@ static void __init avila_fixup(struct ma
 	t->hdr.size = 0;
 }
 
+static void __init avila_gw23xx_setup(void)
+{
+	platform_device_register(&avila_npeb_device);
+	platform_device_register(&avila_npec_device);
+}
+
+#ifdef CONFIG_SENSORS_EEPROM
+static void __init avila_gw2342_setup(void)
+{
+	platform_device_register(&avila_npeb_device);
+	platform_device_register(&avila_npec_device);
+}
+
+static void __init avila_gw2345_setup(void)
+{
+	avila_npeb_data.phy = IXP4XX_ETH_PHY_MAX_ADDR;
+	avila_npeb_data.phy_mask = 0x1e; /* ports 1-4 of the KS8995 switch */
+	platform_device_register(&avila_npeb_device);
+
+	avila_npec_data.phy = 5; /* port 5 of the KS8995 switch */
+	platform_device_register(&avila_npec_device);
+}
+
+static void __init avila_gw2347_setup(void)
+{
+	platform_device_register(&avila_npeb_device);
+}
+
+static void __init avila_gw2348_setup(void)
+{
+	platform_device_register(&avila_npeb_device);
+	platform_device_register(&avila_npec_device);
+}
+
+static void __init avila_gw2353_setup(void)
+{
+	platform_device_register(&avila_npeb_device);
+}
+
+static void __init avila_gw2355_setup(void)
+{
+	avila_npeb_data.phy = IXP4XX_ETH_PHY_MAX_ADDR;
+	avila_npeb_data.phy_mask = 0x1e; /* ports 1-4 of the KS8995 switch */
+	platform_device_register(&avila_npeb_device);
+
+	avila_npec_data.phy = 16;
+	platform_device_register(&avila_npec_device);
+}
+
+static void __init avila_gw2357_setup(void)
+{
+	platform_device_register(&avila_npeb_device);
+}
+
+static struct avila_board_info avila_boards[] __initdata = {
+	{
+		.model		= "GW2342",
+		.setup		= avila_gw2342_setup,
+	}, {
+		.model		= "GW2345",
+		.setup		= avila_gw2345_setup,
+	}, {
+		.model		= "GW2347",
+		.setup		= avila_gw2347_setup,
+	}, {
+		.model		= "GW2348",
+		.setup		= avila_gw2348_setup,
+	}, {
+		.model		= "GW2353",
+		.setup		= avila_gw2353_setup,
+	}, {
+		.model		= "GW2355",
+		.setup		= avila_gw2355_setup,
+	}, {
+		.model		= "GW2357",
+		.setup		= avila_gw2357_setup,
+	}
+};
+
+static struct avila_board_info * __init avila_find_board_info(char *model)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(avila_boards); i++) {
+		struct avila_board_info *info = &avila_boards[i];
+		if (strncmp(info->model, model, strlen(info->model)) == 0)
+			return info;
+	}
+
+	return NULL;
+}
+
+struct avila_eeprom_header {
+	unsigned char mac0[ETH_ALEN];
+	unsigned char mac1[ETH_ALEN];
+	unsigned char res0[4];
+	unsigned char magic[2];
+	unsigned char config[14];
+	unsigned char model[16];
+};
+
+static int __init avila_eeprom_notify(struct notifier_block *self,
+			unsigned long event, void *t)
+{
+	struct eeprom_data *ee = t;
+	struct avila_eeprom_header hdr;
+
+	if (avila_info)
+		return NOTIFY_DONE;
+
+	/* The eeprom is at address 0x51 */
+	if (event != EEPROM_REGISTER || ee->client.addr != 0x51)
+		return NOTIFY_DONE;
+
+	ee->attr->read(&ee->client.dev.kobj, ee->attr, (char *)&hdr,
+							0, sizeof(hdr));
+
+	if (hdr.magic[0] != 'G' || hdr.magic[1] != 'W')
+		return NOTIFY_DONE;
+
+	memcpy(&avila_npeb_data.hwaddr, hdr.mac0, ETH_ALEN);
+	memcpy(&avila_npec_data.hwaddr, hdr.mac1, ETH_ALEN);
+
+	avila_info = avila_find_board_info(hdr.model);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block avila_eeprom_notifier __initdata = {
+       .notifier_call = avila_eeprom_notify
+};
+
+static void __init avila_register_eeprom_notifier(void)
+{
+	register_eeprom_notifier(&avila_eeprom_notifier);
+}
+
+static void __init avila_unregister_eeprom_notifier(void)
+{
+	unregister_eeprom_notifier(&avila_eeprom_notifier);
+}
+#else /* CONFIG_SENSORS_EEPROM */
+static inline void avila_register_eeprom_notifier(void) {};
+static inline void avila_unregister_eeprom_notifier(void) {};
+#endif /* CONFIG_SENSORS_EEPROM */
+
 static void __init avila_init(void)
 {
 	ixp4xx_sys_init();
 
+	/*
+	 * These devices are present on all Avila models and don't need any
+	 * model specific setup.
+	 */
 	avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 	avila_flash_resource.end =
 		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
@@ -213,9 +378,28 @@ static void __init avila_init(void)
 
 	platform_device_register(&avila_pata);
 
-	platform_device_register(avila_npeb_device);
-	platform_device_register(avila_npec_device);
+	avila_register_eeprom_notifier();
+}
+
+static int __init avila_model_setup(void)
+{
+	if (!machine_is_avila())
+		return 0;
+
+	if (avila_info) {
+		printk(KERN_DEBUG "Running on Gateworks Avila %s\n",
+							avila_info->model);
+		avila_info->setup();
+	} else {
+		printk(KERN_INFO "Unknown/missing Avila model number"
+						" -- defaults will be used\n");
+		avila_gw23xx_setup();
+	}
+
+	avila_unregister_eeprom_notifier();
+	return 0;
 }
+late_initcall(avila_model_setup);
 
 MACHINE_START(AVILA, "Gateworks Avila Network Platform")
 	/* Maintainer: Deepak Saxena <dsaxena@plexity.net> */