From 02dcb20caf4de8a7870740fa6edfd3f13f05fb98 Mon Sep 17 00:00:00 2001
From: ckkim <ckkim@hardkernel.com>
Date: Thu, 20 Nov 2014 17:46:11 +0900
Subject: [PATCH] ODROIDC:Ethernet MAC_address using efuse data

Change-Id: I0789ff649a462e00f62705d8b3b08ef5c27a8b82
(cherry picked from commit 577b9c2c49122ea751175530ffca3ffa5d7ec494)

Signed-off-by: Dongjin Kim <tobetter@gmail.com>
---
 drivers/amlogic/efuse/efuse.c         | 54 +++++++++++++++++++++++++++
 drivers/amlogic/ethernet/am_net8218.c | 18 +++++++++
 2 files changed, 72 insertions(+)
 mode change 100755 => 100644 drivers/amlogic/efuse/efuse.c
 mode change 100755 => 100644 drivers/amlogic/ethernet/am_net8218.c

diff --git a/drivers/amlogic/efuse/efuse.c b/drivers/amlogic/efuse/efuse.c
old mode 100755
new mode 100644
index d7767aedf970..c5d2990e53a4
--- a/drivers/amlogic/efuse/efuse.c
+++ b/drivers/amlogic/efuse/efuse.c
@@ -239,6 +239,41 @@ static const struct file_operations efuse_fops = {
 	.unlocked_ioctl      = efuse_unlocked_ioctl,
 };
 
+#if defined(CONFIG_MACH_MESON8B_ODROIDC)
+/* function: aml_efuse_get_item
+ * key_name: key name
+ * data: key data
+ * return : >=0 ok,  <0 error
+ * */
+int aml_efuse_get_item(unsigned char* key_name, unsigned char* data)
+{
+        char dec_mac[50] = {0};
+        efuseinfo_item_t info;
+        unsigned id=0;
+
+        if(strcmp(key_name,"mac")==0)           id = EFUSE_MAC_ID;
+        else if(strcmp(key_name,"mac_bt")==0)   id = EFUSE_MAC_BT_ID;
+        else if(strcmp(key_name,"mac_wifi")==0) id = EFUSE_MAC_WIFI_ID;
+        else if(strcmp(key_name,"usid")==0)     id = EFUSE_USID_ID;
+        else {
+                printk(KERN_INFO"%s : UNKNOWN key_name\n",__func__);
+                return -EFAULT;
+        }
+
+        if(efuse_getinfo_byID(id, &info) < 0){
+                printk(KERN_INFO"ID is not found\n");
+                return -EFAULT;
+        }
+        if (efuse_read_item(dec_mac, info.data_len, (loff_t*)&info.offset) < 0)
+                return -EFAULT;
+
+        memcpy(&data[0],dec_mac,info.data_len);
+
+        return 0;
+}
+EXPORT_SYMBOL(aml_efuse_get_item);
+#endif
+
 /* Sysfs Files */
 static ssize_t mac_show(struct class *cla, struct class_attribute *attr, char *buf)
 {
@@ -290,6 +325,23 @@ static ssize_t mac_bt_show(struct class *cla, struct class_attribute *attr, char
 			dec_mac[0],dec_mac[1],dec_mac[2],dec_mac[3],dec_mac[4],dec_mac[5]);
 }
 
+#if defined(CONFIG_MACH_MESON8B_ODROIDC)
+static ssize_t usid_show(struct class *cla, struct class_attribute *attr, char *buf)
+{
+        char usid[50] = {0};
+        efuseinfo_item_t info;
+        if(efuse_getinfo_byID(EFUSE_USID_ID, &info) < 0){
+                printk(KERN_INFO"ID is not found\n");
+                return -EFAULT;
+        }
+
+        if (efuse_read_item(usid, info.data_len, (loff_t*)&info.offset) < 0)
+                return -EFAULT;
+
+        return sprintf(buf, "%s\n",usid);
+}
+#endif
+
 static int efuse_device_match(struct device *dev, const void *data)
 {
 	return (!strcmp(dev->kobj.name,(const char*)data));
@@ -428,6 +480,8 @@ static struct class_attribute efuse_class_attrs[] = {
 
 	__ATTR_RO(mac_bt),
 
+	__ATTR_RO(usid),
+
 	#ifndef EFUSE_READ_ONLY		/*make the efuse can not be write through sysfs */
 	__ATTR(userdata, S_IRWXU, userdata_show, userdata_write),
 
diff --git a/drivers/amlogic/ethernet/am_net8218.c b/drivers/amlogic/ethernet/am_net8218.c
old mode 100755
new mode 100644
index aec2980c1b9a..3f05290b579d
--- a/drivers/amlogic/ethernet/am_net8218.c
+++ b/drivers/amlogic/ethernet/am_net8218.c
@@ -916,6 +916,20 @@ void read_mac_from_nand(struct net_device *ndev)
 
 }
 #endif
+
+#if defined(CONFIG_MACH_MESON8B_ODROIDC)
+extern int aml_efuse_get_item(unsigned char* key_name, unsigned char* data);
+void read_mac_from_efuse(struct net_device *ndev)
+{
+    int ret;
+    ret = aml_efuse_get_item("mac", ndev->dev_addr);
+    if (ret < 0) {
+        printk(KERN_INFO "ERROR! failed to read hardware mac address\n");
+        random_ether_addr(ndev->dev_addr);
+    }
+}
+#endif
+
 static int aml_mac_init(struct net_device *ndev)
 {
 	struct am_net_private *np = netdev_priv(ndev);
@@ -923,6 +937,9 @@ static int aml_mac_init(struct net_device *ndev)
 
 	writel(1, (void*)(np->base_addr + ETH_DMA_0_Bus_Mode));
 	writel(0x00100800,(void*)(np->base_addr + ETH_DMA_0_Bus_Mode));
+#if defined(CONFIG_MACH_MESON8B_ODROIDC)
+	read_mac_from_efuse(ndev);
+#else
 	printk("--1--write mac add to:");
 
 	data_dump(ndev->dev_addr, 6);
@@ -931,6 +948,7 @@ static int aml_mac_init(struct net_device *ndev)
 #endif
 	printk("--2--write mac add to:");
 	data_dump(ndev->dev_addr, 6);
+#endif
 	write_mac_addr(ndev, ndev->dev_addr);
 
 	val = 0xc80c |		//8<<8 | 8<<17; //tx and rx all 8bit mode;