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phylib: Add support for board-level PHY fixups

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Sometimes the specific interaction between the platform and the PHY
requires special handling.  For instance, to change where the PHY's
clock input is, or to add a delay to account for latency issues in the
data path.  We add a mechanism for registering a callback with the PHY
Lib to be called on matching PHYs when they are brought up, or reset.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Andy Fleming
2008-04-18 17:29:54 -05:00
committed by Jeff Garzik
parent 8ec7226a93
commit f62220d3a9
5 changed files with 182 additions and 16 deletions
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24
include/linux/phy.h
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@ -379,6 +379,18 @@ struct phy_driver {
};
#define to_phy_driver(d) container_of(d, struct phy_driver, driver)
#define PHY_ANY_ID "MATCH ANY PHY"
#define PHY_ANY_UID 0xffffffff
/* A Structure for boards to register fixups with the PHY Lib */
struct phy_fixup {
struct list_head list;
char bus_id[BUS_ID_SIZE];
u32 phy_uid;
u32 phy_uid_mask;
int (*run)(struct phy_device *phydev);
};
int phy_read(struct phy_device *phydev, u16 regnum);
int phy_write(struct phy_device *phydev, u16 regnum, u16 val);
int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id);
@ -386,8 +398,8 @@ struct phy_device* get_phy_device(struct mii_bus *bus, int addr);
int phy_clear_interrupt(struct phy_device *phydev);
int phy_config_interrupt(struct phy_device *phydev, u32 interrupts);
struct phy_device * phy_attach(struct net_device *dev,
const char *phy_id, u32 flags, phy_interface_t interface);
struct phy_device * phy_connect(struct net_device *dev, const char *phy_id,
const char *bus_id, u32 flags, phy_interface_t interface);
struct phy_device * phy_connect(struct net_device *dev, const char *bus_id,
void (*handler)(struct net_device *), u32 flags,
phy_interface_t interface);
void phy_disconnect(struct phy_device *phydev);
@ -427,5 +439,13 @@ void phy_print_status(struct phy_device *phydev);
struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id);
void phy_device_free(struct phy_device *phydev);
int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
int (*run)(struct phy_device *));
int phy_register_fixup_for_id(const char *bus_id,
int (*run)(struct phy_device *));
int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
int (*run)(struct phy_device *));
int phy_scan_fixups(struct phy_device *phydev);
extern struct bus_type mdio_bus_type;
#endif /* __PHY_H */