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authorFlorian Fainelli <f.fainelli@gmail.com>2017-03-23 10:01:19 -0700
committerDavid S. Miller <davem@davemloft.net>2017-03-24 12:51:05 -0700
commit90eff9096c01ba90cdae504a6b95ee87fe2556a3 (patch)
tree2e8b75015ca154e15d796308b3e8c40333dc65f8 /include/linux/phy.h
parent17487eebaf5799f7a2e78364cc94fb84e37300a2 (diff)
net: phy: Allow splitting MDIO bus/device support from PHYs
Introduce a new configuration symbol: MDIO_DEVICE which allows building the MDIO devices and bus code, without pulling in the entire Ethernet PHY library and devices code. PHYLIB nows select MDIO_DEVICE and the relevant Makefile files are updated to reflect that. When MDIO_DEVICE (MDIO bus/device only) is selected, but not PHYLIB, we have mdio-bus.ko as a loadable module, and it does not have a module_exit() function because the safety of removing a bus class is unclear. When both MDIO_DEVICE and PHYLIB are enabled, we need to assemble everything into a common loadable module: libphy.ko because of nasty circular dependencies between phy.c, phy_device.c and mdio_bus.c which are really tough to untangle. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/phy.h')
-rw-r--r--include/linux/phy.h21
1 files changed, 19 insertions, 2 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 2efca6b39fba..624cecf69c28 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -745,8 +745,24 @@ int phy_write_mmd(struct phy_device *phydev, int devad, u32 regnum, u16 val);
struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
bool is_c45,
struct phy_c45_device_ids *c45_ids);
+#if IS_ENABLED(CONFIG_PHYLIB)
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
int phy_device_register(struct phy_device *phy);
+void phy_device_free(struct phy_device *phydev);
+#else
+static inline
+struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
+{
+ return NULL;
+}
+
+static inline int phy_device_register(struct phy_device *phy)
+{
+ return 0;
+}
+
+static inline void phy_device_free(struct phy_device *phydev) { }
+#endif /* CONFIG_PHYLIB */
void phy_device_remove(struct phy_device *phydev);
int phy_init_hw(struct phy_device *phydev);
int phy_suspend(struct phy_device *phydev);
@@ -827,7 +843,6 @@ int phy_ethtool_ksettings_set(struct phy_device *phydev,
int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
int phy_start_interrupts(struct phy_device *phydev);
void phy_print_status(struct phy_device *phydev);
-void phy_device_free(struct phy_device *phydev);
int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
@@ -854,8 +869,10 @@ int phy_ethtool_set_link_ksettings(struct net_device *ndev,
const struct ethtool_link_ksettings *cmd);
int phy_ethtool_nway_reset(struct net_device *ndev);
+#if IS_ENABLED(CONFIG_PHYLIB)
int __init mdio_bus_init(void);
void mdio_bus_exit(void);
+#endif
extern struct bus_type mdio_bus_type;
@@ -866,7 +883,7 @@ struct mdio_board_info {
const void *platform_data;
};
-#if IS_ENABLED(CONFIG_PHYLIB)
+#if IS_ENABLED(CONFIG_MDIO_DEVICE)
int mdiobus_register_board_info(const struct mdio_board_info *info,
unsigned int n);
#else