--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
-@@ -7,9 +7,11 @@
+@@ -7,9 +7,12 @@
*/
#include <linux/device.h>
++#include <linux/ctype.h>
+#include <linux/etherdevice.h>
#include <linux/export.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kref.h>
#include <linux/module.h>
-@@ -696,6 +698,37 @@ static int nvmem_validate_keepouts(struc
+@@ -696,6 +699,62 @@ static int nvmem_validate_keepouts(struc
return 0;
}
+
+ return 0;
+}
++
++static int nvmem_mac_base_hex_read(void *context, const char *id, int index, unsigned int offset,
++ void *buf, size_t bytes)
++{
++ u8 mac[ETH_ALEN], *hexstr;
++ int i;
++
++ if (WARN_ON(bytes != 2 * ETH_ALEN))
++ return -EINVAL;
++
++ hexstr = (u8 *)buf;
++ for (i = 0; i < ETH_ALEN; i++) {
++ if (!isxdigit(hexstr[i * 2]) || !isxdigit(hexstr[i * 2 + 1]))
++ return -EINVAL;
++
++ mac[i] = (hex_to_bin(hexstr[i * 2]) << 4) | hex_to_bin(hexstr[i * 2 + 1]);
++ }
++
++ if (index)
++ eth_addr_add(mac, index);
++
++ ether_addr_copy(buf, mac);
++
++ return 0;
++}
+
static int nvmem_add_cells_from_dt(struct nvmem_device *nvmem, struct device_node *np)
{
struct nvmem_layout *layout = nvmem->layout;
-@@ -731,6 +764,20 @@ static int nvmem_add_cells_from_dt(struc
+@@ -731,6 +790,25 @@ static int nvmem_add_cells_from_dt(struc
if (layout && layout->fixup_cell_info)
layout->fixup_cell_info(nvmem, layout, &info);
+ if (of_device_is_compatible(np, "fixed-layout")) {
+ if (of_device_is_compatible(child, "mac-base")) {
-+ if (info.bytes == 6) {
++ if (info.bytes == ETH_ALEN) {
+ info.raw_len = info.bytes;
+ info.bytes = ETH_ALEN;
+ info.read_post_process = nvmem_mac_base_raw_read;
++ } else if (info.bytes == 2 * ETH_ALEN) {
++ info.raw_len = info.bytes;
++ info.bytes = ETH_ALEN;
++ info.read_post_process = nvmem_mac_base_hex_read;
+ } else if (info.bytes == 3 * ETH_ALEN - 1) {
+ info.raw_len = info.bytes;
+ info.bytes = ETH_ALEN;
+ info.read_post_process = nvmem_mac_base_ascii_read;
+ }
++
+ }
+ }
+
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
-@@ -7,9 +7,11 @@
+@@ -7,9 +7,12 @@
*/
#include <linux/device.h>
++#include <linux/ctype.h>
+#include <linux/etherdevice.h>
#include <linux/export.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kref.h>
#include <linux/module.h>
-@@ -696,6 +698,37 @@ static int nvmem_validate_keepouts(struc
+@@ -696,6 +699,62 @@ static int nvmem_validate_keepouts(struc
return 0;
}
+
+ return 0;
+}
++
++static int nvmem_mac_base_hex_read(void *context, const char *id, int index, unsigned int offset,
++ void *buf, size_t bytes)
++{
++ u8 mac[ETH_ALEN], *hexstr;
++ int i;
++
++ if (WARN_ON(bytes != 2 * ETH_ALEN))
++ return -EINVAL;
++
++ hexstr = (u8 *)buf;
++ for (i = 0; i < ETH_ALEN; i++) {
++ if (!isxdigit(hexstr[i * 2]) || !isxdigit(hexstr[i * 2 + 1]))
++ return -EINVAL;
++
++ mac[i] = (hex_to_bin(hexstr[i * 2]) << 4) | hex_to_bin(hexstr[i * 2 + 1]);
++ }
++
++ if (index)
++ eth_addr_add(mac, index);
++
++ ether_addr_copy(buf, mac);
++
++ return 0;
++}
+
static int nvmem_add_cells_from_dt(struct nvmem_device *nvmem, struct device_node *np)
{
struct nvmem_layout *layout = nvmem->layout;
-@@ -731,6 +764,20 @@ static int nvmem_add_cells_from_dt(struc
+@@ -731,6 +790,25 @@ static int nvmem_add_cells_from_dt(struc
if (layout && layout->fixup_cell_info)
layout->fixup_cell_info(nvmem, layout, &info);
+ if (of_device_is_compatible(np, "fixed-layout")) {
+ if (of_device_is_compatible(child, "mac-base")) {
-+ if (info.bytes == 6) {
++ if (info.bytes == ETH_ALEN) {
+ info.raw_len = info.bytes;
+ info.bytes = ETH_ALEN;
+ info.read_post_process = nvmem_mac_base_raw_read;
++ } else if (info.bytes == 2 * ETH_ALEN) {
++ info.raw_len = info.bytes;
++ info.bytes = ETH_ALEN;
++ info.read_post_process = nvmem_mac_base_hex_read;
+ } else if (info.bytes == 3 * ETH_ALEN - 1) {
+ info.raw_len = info.bytes;
+ info.bytes = ETH_ALEN;
+ info.read_post_process = nvmem_mac_base_ascii_read;
+ }
++
+ }
+ }
+