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Modified version of mlinuxguy's eth driver and efuse from hardkernel #17

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Modified version of mlinuxguy's eth driver and efuse from hardkernel #17

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122 changes: 97 additions & 25 deletions drivers/amlogic/efuse/efuse.c
100755 → 100644
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Original file line number Diff line number Diff line change
Expand Up @@ -125,7 +125,7 @@ static long efuse_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned l
{
switch (cmd)
{
#ifndef CONFIG_MESON_TRUSTZONE
#ifndef CONFIG_MESON_TRUSTZONE
case EFUSE_ENCRYPT_ENABLE:
aml_set_reg32_bits( P_EFUSE_CNTL4, CNTL4_ENCRYPT_ENABLE_ON,
CNTL4_ENCRYPT_ENABLE_BIT, CNTL4_ENCRYPT_ENABLE_SIZE);
Expand Down Expand Up @@ -191,7 +191,7 @@ static ssize_t efuse_write( struct file *file, const char __user *buf, size_t co
unsigned char* contents = NULL;

if (pos >= EFUSE_BYTES)
return 0; /* Past EOF */
return 0; /* Past EOF */
if (count > EFUSE_BYTES - pos)
count = EFUSE_BYTES - pos;
if (count > EFUSE_BYTES)
Expand Down Expand Up @@ -239,21 +239,72 @@ static const struct file_operations efuse_fops = {
.unlocked_ioctl = efuse_unlocked_ioctl,
};

/* Sysfs Files */
static ssize_t mac_show(struct class *cla, struct class_attribute *attr, char *buf)
#define MACCHAR(x) (('A' <= (x) && (x) <= 'F') \
? (x) - 'A' + 'a' : (x))

static char *aml_efuse_mac(void)
{
char dec_mac[6] = {0};
char hwmac[20];
char buf[80];
char mac_mask;
efuseinfo_item_t info;
if(efuse_getinfo_byID(EFUSE_MAC_ID, &info) < 0){
printk(KERN_INFO"ID is not found\n");
return -EFAULT;

if (efuse_getinfo_byID(EFUSE_MAC_ID, &info) < 0)
return 0;

if (efuse_read_item(buf, info.data_len,
(loff_t*)&info.offset) < 0)
return 0;

sprintf(hwmac, "%02x:%02x:%02x:%02x:%02x:%02x",
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);

mac_mask = buf[3] & 0xf0;
if ((0x30 == mac_mask)
|| ((0xa0 <= mac_mask) && (mac_mask <= 0xc0))) {
info.data_len = 16;
info.offset = 4;
efuse_read_item(buf, info.data_len,
(loff_t*)&info.offset);

if (0x30 == mac_mask) {
hwmac[9] = MACCHAR(buf[5]);
}

sprintf(hwmac + 10, "%c:%c%c:%c%c",
MACCHAR(buf[11]), MACCHAR(buf[12]), MACCHAR(buf[13]),
MACCHAR(buf[14]), MACCHAR(buf[15]));
}

if (efuse_read_item(dec_mac, info.data_len, (loff_t*)&info.offset) < 0)
return -EFAULT;
return hwmac;
}

return sprintf(buf, "%02x:%02x:%02x:%02x:%02x:%02x\n",
dec_mac[0],dec_mac[1],dec_mac[2],dec_mac[3],dec_mac[4],dec_mac[5]);
unsigned char *aml_efuse_get_item(unsigned char* key_name)
{
unsigned char *ret = 0;
int id;

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 {
pr_info("%s: UNKNOWN key_name\n", __func__);
return 0;
}

if (id == EFUSE_MAC_ID) {
return aml_efuse_mac();
}

return ret;
}
EXPORT_SYMBOL(aml_efuse_get_item);

/* Sysfs Files */
static ssize_t mac_show(struct class *cla, struct class_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", aml_efuse_mac());
}

static ssize_t mac_wifi_show(struct class *cla, struct class_attribute *attr, char *buf)
Expand Down Expand Up @@ -290,6 +341,23 @@ 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));
Expand All @@ -310,9 +378,9 @@ struct device *efuse_class_to_device(struct class *cla)
{
int len;

len = strlen(usid);
if((len > 8)&&(len<31) )
return 0;
len = strlen(usid);
if((len > 8)&&(len<31) )
return 0;
else
return -1;
}*/
Expand Down Expand Up @@ -359,15 +427,15 @@ static ssize_t userdata_show(struct class *cla, struct class_attribute *attr, ch
// return -1;
//}
/*return sprintf(buf, "%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c%01c\n",
op[0],op[1],op[2],op[3],op[4],op[5],
op[6],op[7],op[8],op[9],op[10],op[11],
op[12],op[13],op[14],op[15],op[16],op[17],
op[18],op[19]);*/
op[0],op[1],op[2],op[3],op[4],op[5],
op[6],op[7],op[8],op[9],op[10],op[11],
op[12],op[13],op[14],op[15],op[16],op[17],
op[18],op[19]);*/

for(i = 0; i < info.data_len; i++) {
memset(tmp, 0, 5);
sprintf(tmp, "%02x:", op[i]);
strcat(buf, tmp);
memset(tmp, 0, 5);
sprintf(tmp, "%02x:", op[i]);
strcat(buf, tmp);
}
buf[3*info.data_len - 1] = 0; //delete the last ':'
return 3*info.data_len - 1;
Expand Down Expand Up @@ -428,6 +496,10 @@ static struct class_attribute efuse_class_attrs[] = {

__ATTR_RO(mac_bt),

#if defined(CONFIG_MACH_MESON8B_ODROIDC)
__ATTR_RO(usid),
#endif

#ifndef EFUSE_READ_ONLY /*make the efuse can not be write through sysfs */
__ATTR(userdata, S_IRWXU, userdata_show, userdata_write),

Expand Down Expand Up @@ -531,9 +603,9 @@ int usid_min,usid_max;
if(pdev->dev.platform_data)
devp->platform_data = pdev->dev.platform_data;
else
devp->platform_data = NULL;
devp->platform_data = NULL;
#endif
#ifndef CONFIG_MESON_TRUSTZONE
#ifndef CONFIG_MESON_TRUSTZONE
/* disable efuse encryption */
aml_set_reg32_bits( P_EFUSE_CNTL4, CNTL1_AUTO_WR_ENABLE_OFF,
CNTL4_ENCRYPT_ENABLE_BIT, CNTL4_ENCRYPT_ENABLE_SIZE );
Expand All @@ -547,7 +619,7 @@ int usid_min,usid_max;
// clear power down bit
aml_set_reg32_bits(P_EFUSE_CNTL1, CNTL1_PD_ENABLE_OFF,
CNTL1_PD_ENABLE_BIT, CNTL1_PD_ENABLE_SIZE);
#endif
#endif
#endif
return 0;

Expand Down
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