net: phy: Add phy loopback support in net phy framework
This patch add set_loopback in phy_driver, which is used by MAC
driver to enable or disable phy loopback. it also add a generic
genphy_loopback function, which use BMCR loopback bit to enable
or disable loopback.
Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 1d8d701..2a9567b 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -372,6 +372,7 @@ struct phy_c45_device_ids {
* has_fixups: Set to true if this phy has fixups/quirks.
* suspended: Set to true if this phy has been suspended successfully.
* sysfs_links: Internal boolean tracking sysfs symbolic links setup/removal.
+ * loopback_enabled: Set true if this phy has been loopbacked successfully.
* state: state of the PHY for management purposes
* dev_flags: Device-specific flags used by the PHY driver.
* link_timeout: The number of timer firings to wait before the
@@ -409,6 +410,7 @@ struct phy_device {
bool has_fixups;
bool suspended;
bool sysfs_links;
+ bool loopback_enabled;
enum phy_state state;
@@ -648,6 +650,7 @@ struct phy_driver {
int (*set_tunable)(struct phy_device *dev,
struct ethtool_tunable *tuna,
const void *data);
+ int (*set_loopback)(struct phy_device *dev, bool enable);
};
#define to_phy_driver(d) container_of(to_mdio_common_driver(d), \
struct phy_driver, mdiodrv)
@@ -793,6 +796,7 @@ void phy_device_remove(struct phy_device *phydev);
int phy_init_hw(struct phy_device *phydev);
int phy_suspend(struct phy_device *phydev);
int phy_resume(struct phy_device *phydev);
+int phy_loopback(struct phy_device *phydev, bool enable);
struct phy_device *phy_attach(struct net_device *dev, const char *bus_id,
phy_interface_t interface);
struct phy_device *phy_find_first(struct mii_bus *bus);
@@ -847,6 +851,7 @@ int genphy_update_link(struct phy_device *phydev);
int genphy_read_status(struct phy_device *phydev);
int genphy_suspend(struct phy_device *phydev);
int genphy_resume(struct phy_device *phydev);
+int genphy_loopback(struct phy_device *phydev, bool enable);
int genphy_soft_reset(struct phy_device *phydev);
static inline int genphy_no_soft_reset(struct phy_device *phydev)
{