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net: phy: Allow pre-declaration of MDIO devices

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Allow board support code to collect pre-declarations for MDIO devices by
registering them with mdiobus_register_board_info(). SPI and I2C buses
have a similar feature, we were missing this for MDIO devices, but this
is particularly useful for e.g: MDIO-connected switches which need to
provide their port layout (often board-specific) to a MDIO Ethernet
switch driver.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2017-02-04 13:02:44 -08:00
committed by David S. Miller
parent 71e0bbde0d
commit 648ea01340
8 changed files with 145 additions and 1 deletions
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19
include/linux/phy.h
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@@ -886,6 +886,25 @@ void mdio_bus_exit(void);
extern struct bus_type mdio_bus_type;
struct mdio_board_info {
const char *bus_id;
char modalias[MDIO_NAME_SIZE];
int mdio_addr;
const void *platform_data;
};
#if IS_ENABLED(CONFIG_PHYLIB)
int mdiobus_register_board_info(const struct mdio_board_info *info,
unsigned int n);
#else
static inline int mdiobus_register_board_info(const struct mdio_board_info *i,
unsigned int n)
{
return 0;
}
#endif
/**
* module_phy_driver() - Helper macro for registering PHY drivers
* @__phy_drivers: array of PHY drivers to register