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9217e566bd
It's common practice to store MAC addresses for network interfaces into nvmem devices. However the code to actually do this in the kernel lacks, so this patch adds of_get_nvmem_mac_address() for drivers to obtain the address from an nvmem cell provider. This is particulary useful on devices where the ethernet interface cannot be configured by the bootloader, for example because it's in an FPGA. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
41 lines
882 B
C
41 lines
882 B
C
/*
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* OF helpers for network devices.
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*
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* This file is released under the GPLv2
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*/
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#ifndef __LINUX_OF_NET_H
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#define __LINUX_OF_NET_H
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#ifdef CONFIG_OF_NET
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#include <linux/of.h>
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struct net_device;
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extern int of_get_phy_mode(struct device_node *np);
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extern const void *of_get_mac_address(struct device_node *np);
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extern int of_get_nvmem_mac_address(struct device_node *np, void *addr);
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extern struct net_device *of_find_net_device_by_node(struct device_node *np);
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#else
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static inline int of_get_phy_mode(struct device_node *np)
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{
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return -ENODEV;
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}
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static inline const void *of_get_mac_address(struct device_node *np)
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{
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return NULL;
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}
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static inline int of_get_nvmem_mac_address(struct device_node *np, void *addr)
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{
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return -ENODEV;
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}
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static inline struct net_device *of_find_net_device_by_node(struct device_node *np)
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{
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return NULL;
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}
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#endif
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#endif /* __LINUX_OF_NET_H */
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