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authorRandy Dunlap <randy.dunlap@oracle.com>2007-03-06 02:41:48 -0800
committerJeff Garzik <jeff@garzik.org>2007-04-28 11:00:57 -0400
commitb3df0da886ffdb3e70c3197f589e959e5f8c9c04 (patch)
tree7a1f564d31835f31ebab9da370dace187b0aefc6 /drivers/net/phy/phy_device.c
parent56e1393f82349d8206fe7feb94db96b065c55e51 (diff)
downloadlinux-linaro-android-b3df0da886ffdb3e70c3197f589e959e5f8c9c04.tar.gz
phy layer: add kernel-doc + DocBook
Convert function documentation in drivers/net/phy/ to kernel-doc and add it to DocBook. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/phy/phy_device.c')
-rw-r--r--drivers/net/phy/phy_device.c114
1 files changed, 79 insertions, 35 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 8f01952c485..a8b74cdab1e 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -74,11 +74,13 @@ struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id)
}
EXPORT_SYMBOL(phy_device_create);
-/* get_phy_device
+/**
+ * get_phy_device - reads the specified PHY device and returns its @phy_device struct
+ * @bus: the target MII bus
+ * @addr: PHY address on the MII bus
*
- * description: Reads the ID registers of the PHY at addr on the
- * bus, then allocates and returns the phy_device to
- * represent it.
+ * Description: Reads the ID registers of the PHY at @addr on the
+ * @bus, then allocates and returns the phy_device to represent it.
*/
struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
{
@@ -112,23 +114,33 @@ struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
return dev;
}
-/* phy_prepare_link:
+/**
+ * phy_prepare_link - prepares the PHY layer to monitor link status
+ * @phydev: target phy_device struct
+ * @handler: callback function for link status change notifications
*
- * description: Tells the PHY infrastructure to handle the
+ * Description: Tells the PHY infrastructure to handle the
* gory details on monitoring link status (whether through
* polling or an interrupt), and to call back to the
* connected device driver when the link status changes.
* If you want to monitor your own link state, don't call
- * this function */
+ * this function.
+ */
void phy_prepare_link(struct phy_device *phydev,
void (*handler)(struct net_device *))
{
phydev->adjust_link = handler;
}
-/* phy_connect:
+/**
+ * phy_connect - connect an ethernet device to a PHY device
+ * @dev: the network device to connect
+ * @phy_id: the PHY device to connect
+ * @handler: callback function for state change notifications
+ * @flags: PHY device's dev_flags
+ * @interface: PHY device's interface
*
- * description: Convenience function for connecting ethernet
+ * Description: Convenience function for connecting ethernet
* devices to PHY devices. The default behavior is for
* the PHY infrastructure to handle everything, and only notify
* the connected driver when the link status changes. If you
@@ -158,6 +170,10 @@ struct phy_device * phy_connect(struct net_device *dev, const char *phy_id,
}
EXPORT_SYMBOL(phy_connect);
+/**
+ * phy_disconnect - disable interrupts, stop state machine, and detach a PHY device
+ * @phydev: target phy_device struct
+ */
void phy_disconnect(struct phy_device *phydev)
{
if (phydev->irq > 0)
@@ -171,21 +187,25 @@ void phy_disconnect(struct phy_device *phydev)
}
EXPORT_SYMBOL(phy_disconnect);
-/* phy_attach:
+static int phy_compare_id(struct device *dev, void *data)
+{
+ return strcmp((char *)data, dev->bus_id) ? 0 : 1;
+}
+
+/**
+ * phy_attach - attach a network device to a particular PHY device
+ * @dev: network device to attach
+ * @phy_id: PHY device to attach
+ * @flags: PHY device's dev_flags
+ * @interface: PHY device's interface
*
- * description: Called by drivers to attach to a particular PHY
+ * Description: Called by drivers to attach to a particular PHY
* device. The phy_device is found, and properly hooked up
* to the phy_driver. If no driver is attached, then the
* genphy_driver is used. The phy_device is given a ptr to
* the attaching device, and given a callback for link status
- * change. The phy_device is returned to the attaching
- * driver.
+ * change. The phy_device is returned to the attaching driver.
*/
-static int phy_compare_id(struct device *dev, void *data)
-{
- return strcmp((char *)data, dev->bus_id) ? 0 : 1;
-}
-
struct phy_device *phy_attach(struct net_device *dev,
const char *phy_id, u32 flags, phy_interface_t interface)
{
@@ -246,6 +266,10 @@ struct phy_device *phy_attach(struct net_device *dev,
}
EXPORT_SYMBOL(phy_attach);
+/**
+ * phy_detach - detach a PHY device from its network device
+ * @phydev: target phy_device struct
+ */
void phy_detach(struct phy_device *phydev)
{
phydev->attached_dev = NULL;
@@ -262,11 +286,13 @@ EXPORT_SYMBOL(phy_detach);
/* Generic PHY support and helper functions */
-/* genphy_config_advert
+/**
+ * genphy_config_advert - sanitize and advertise auto-negotation parameters
+ * @phydev: target phy_device struct
*
- * description: Writes MII_ADVERTISE with the appropriate values,
+ * Description: Writes MII_ADVERTISE with the appropriate values,
* after sanitizing the values to make sure we only advertise
- * what is supported
+ * what is supported.
*/
int genphy_config_advert(struct phy_device *phydev)
{
@@ -328,11 +354,14 @@ int genphy_config_advert(struct phy_device *phydev)
}
EXPORT_SYMBOL(genphy_config_advert);
-/* genphy_setup_forced
+/**
+ * genphy_setup_forced - configures/forces speed/duplex from @phydev
+ * @phydev: target phy_device struct
*
- * description: Configures MII_BMCR to force speed/duplex
+ * Description: Configures MII_BMCR to force speed/duplex
* to the values in phydev. Assumes that the values are valid.
- * Please see phy_sanitize_settings() */
+ * Please see phy_sanitize_settings().
+ */
int genphy_setup_forced(struct phy_device *phydev)
{
int ctl = BMCR_RESET;
@@ -361,7 +390,10 @@ int genphy_setup_forced(struct phy_device *phydev)
}
-/* Enable and Restart Autonegotiation */
+/**
+ * genphy_restart_aneg - Enable and Restart Autonegotiation
+ * @phydev: target phy_device struct
+ */
int genphy_restart_aneg(struct phy_device *phydev)
{
int ctl;
@@ -382,11 +414,13 @@ int genphy_restart_aneg(struct phy_device *phydev)
}
-/* genphy_config_aneg
+/**
+ * genphy_config_aneg - restart auto-negotiation or write BMCR
+ * @phydev: target phy_device struct
*
- * description: If auto-negotiation is enabled, we configure the
+ * Description: If auto-negotiation is enabled, we configure the
* advertising, and then restart auto-negotiation. If it is not
- * enabled, then we write the BMCR
+ * enabled, then we write the BMCR.
*/
int genphy_config_aneg(struct phy_device *phydev)
{
@@ -406,11 +440,13 @@ int genphy_config_aneg(struct phy_device *phydev)
}
EXPORT_SYMBOL(genphy_config_aneg);
-/* genphy_update_link
+/**
+ * genphy_update_link - update link status in @phydev
+ * @phydev: target phy_device struct
*
- * description: Update the value in phydev->link to reflect the
+ * Description: Update the value in phydev->link to reflect the
* current link value. In order to do this, we need to read
- * the status register twice, keeping the second value
+ * the status register twice, keeping the second value.
*/
int genphy_update_link(struct phy_device *phydev)
{
@@ -437,9 +473,11 @@ int genphy_update_link(struct phy_device *phydev)
}
EXPORT_SYMBOL(genphy_update_link);
-/* genphy_read_status
+/**
+ * genphy_read_status - check the link status and update current link state
+ * @phydev: target phy_device struct
*
- * description: Check the link, then figure out the current state
+ * Description: Check the link, then figure out the current state
* by comparing what we advertise with what the link partner
* advertises. Start by checking the gigabit possibilities,
* then move on to 10/100.
@@ -579,9 +617,11 @@ static int genphy_config_init(struct phy_device *phydev)
}
-/* phy_probe
+/**
+ * phy_probe - probe and init a PHY device
+ * @dev: device to probe and init
*
- * description: Take care of setting up the phy_device structure,
+ * Description: Take care of setting up the phy_device structure,
* set the state to READY (the driver's init function should
* set it to STARTING if needed).
*/
@@ -643,6 +683,10 @@ static int phy_remove(struct device *dev)
return 0;
}
+/**
+ * phy_driver_register - register a phy_driver with the PHY layer
+ * @new_driver: new phy_driver to register
+ */
int phy_driver_register(struct phy_driver *new_driver)
{
int retval;