phy subsystem: more cleanups

- unexport symbols never used outside of home module
- remove dead code
- remove CONFIG_PHYCONTROL, make it unconditionally enabled

drivers/net/phy/Kconfig

@@ -12,14 +12,6 @@ config PHYLIB
 	  devices.  This option provides infrastructure for
 	  managing PHY devices.
 
-config PHYCONTROL
-	bool "Support for automatically handling PHY state changes"
-	depends on PHYLIB
-	help
-	  Adds code to perform all the work for keeping PHY link
-	  state (speed/duplex/etc) up-to-date.  Also handles
-	  interrupts.
-
 comment "MII PHY device drivers"
 	depends on PHYLIB
 

drivers/net/phy/mdio_bus.c

@@ -38,80 +38,6 @@
 #include <asm/irq.h>
 #include <asm/uaccess.h>
 
-/* mdiobus_register 
- *
- * description: Called by a bus driver to bring up all the PHYs
- *   on a given bus, and attach them to the bus
- */
-int mdiobus_register(struct mii_bus *bus)
-{
-	int i;
-	int err = 0;
-
-	spin_lock_init(&bus->mdio_lock);
-
-	if (NULL == bus || NULL == bus->name ||
-			NULL == bus->read ||
-			NULL == bus->write)
-		return -EINVAL;
-
-	if (bus->reset)
-		bus->reset(bus);
-
-	for (i = 0; i < PHY_MAX_ADDR; i++) {
-		struct phy_device *phydev;
-
-		phydev = get_phy_device(bus, i);
-
-		if (IS_ERR(phydev))
-			return PTR_ERR(phydev);
-
-		/* There's a PHY at this address
-		 * We need to set:
-		 * 1) IRQ
-		 * 2) bus_id
-		 * 3) parent
-		 * 4) bus
-		 * 5) mii_bus
-		 * And, we need to register it */
-		if (phydev) {
-			phydev->irq = bus->irq[i];
-
-			phydev->dev.parent = bus->dev;
-			phydev->dev.bus = &mdio_bus_type;
-			sprintf(phydev->dev.bus_id, "phy%d:%d", bus->id, i);
-
-			phydev->bus = bus;
-
-			err = device_register(&phydev->dev);
-
-			if (err)
-				printk(KERN_ERR "phy %d failed to register\n",
-						i);
-		}
-
-		bus->phy_map[i] = phydev;
-	}
-
-	pr_info("%s: probed\n", bus->name);
-
-	return err;
-}
-EXPORT_SYMBOL(mdiobus_register);
-
-void mdiobus_unregister(struct mii_bus *bus)
-{
-	int i;
-
-	for (i = 0; i < PHY_MAX_ADDR; i++) {
-		if (bus->phy_map[i]) {
-			device_unregister(&bus->phy_map[i]->dev);
-			kfree(bus->phy_map[i]);
-		}
-	}
-}
-EXPORT_SYMBOL(mdiobus_unregister);
-
 /* mdio_bus_match
  *
  * description: Given a PHY device, and a PHY driver, return 1 if

drivers/net/phy/phy.c

@@ -40,21 +40,9 @@
 #include <asm/uaccess.h>
 
 static void phy_timer(unsigned long data);
-
-/* Convenience function to print out the current phy status
- */
-void phy_print_status(struct phy_device *phydev)
-{
-	pr_info("%s: Link is %s", phydev->dev.bus_id,
-			phydev->link ? "Up" : "Down");
-	if (phydev->link)
-		printk(" - %d/%s", phydev->speed,
-				DUPLEX_FULL == phydev->duplex ?
-				"Full" : "Half");
-
-	printk("\n");
-}
-EXPORT_SYMBOL(phy_print_status);
+static int phy_disable_interrupts(struct phy_device *phydev);
+static void phy_sanitize_settings(struct phy_device *phydev);
+static int phy_stop_interrupts(struct phy_device *phydev);
 
 
 /* Convenience functions for reading/writing a given PHY
@@ -133,7 +121,7 @@ static inline int phy_aneg_done(struct phy_device *phydev)
  *   and to PHY_FORCING if auto-negotiation is disabled. Unless
  *   the PHY is currently HALTED.
  */
-int phy_start_aneg(struct phy_device *phydev)
+static int phy_start_aneg(struct phy_device *phydev)
 {
 	int err;
 
@@ -161,8 +149,6 @@ int phy_start_aneg(struct phy_device *phydev)
 	spin_unlock(&phydev->lock);
 	return err;
 }
-EXPORT_SYMBOL(phy_start_aneg);
-
 
 /* A structure for mapping a particular speed and duplex
  * combination to a particular SUPPORTED and ADVERTISED value */
@@ -255,7 +241,7 @@ static inline int phy_find_valid(int idx, u32 features)
  *   duplexes.  Drop down by one in this order:  1000/FULL,
  *   1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF
  */
-void phy_sanitize_settings(struct phy_device *phydev)
+static void phy_sanitize_settings(struct phy_device *phydev)
 {
 	u32 features = phydev->supported;
 	int idx;
@@ -270,7 +256,6 @@ void phy_sanitize_settings(struct phy_device *phydev)
 	phydev->speed = settings[idx].speed;
 	phydev->duplex = settings[idx].duplex;
 }
-EXPORT_SYMBOL(phy_sanitize_settings);
 
 /* phy_force_reduction
  *
@@ -477,48 +462,22 @@ void phy_error(struct phy_device *phydev)
 	spin_unlock(&phydev->lock);
 }
 
-#ifdef CONFIG_PHYCONTROL
-
-static void phy_change(void *data);
-
-/* phy_interrupt
- *
- * description: When a PHY interrupt occurs, the handler disables
- * interrupts, and schedules a work task to clear the interrupt.
- */
-static irqreturn_t phy_interrupt(int irq, void *phy_dat, struct pt_regs *regs)
-{
-	struct phy_device *phydev = phy_dat;
-
-	/* The MDIO bus is not allowed to be written in interrupt
-	 * context, so we need to disable the irq here.  A work
-	 * queue will write the PHY to disable and clear the
-	 * interrupt, and then reenable the irq line. */
-	disable_irq_nosync(irq);
-
-	schedule_work(&phydev->phy_queue);
-
-	return IRQ_HANDLED;
-}
-
-/* Enable the interrupts from the PHY side */
-int phy_enable_interrupts(struct phy_device *phydev)
+static int phy_stop_interrupts(struct phy_device *phydev)
 {
 	int err;
 
-	err = phy_clear_interrupt(phydev);
+	err = phy_disable_interrupts(phydev);
 
-	if (err < 0)
-		return err;
+	if (err)
+		phy_error(phydev);
 
-	err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
+	free_irq(phydev->irq, phydev);
 
 	return err;
 }
-EXPORT_SYMBOL(phy_enable_interrupts);
 
 /* Disable the PHY interrupts from the PHY side */
-int phy_disable_interrupts(struct phy_device *phydev)
+static int phy_disable_interrupts(struct phy_device *phydev)
 {
 	int err;
 
@@ -541,140 +500,6 @@ int phy_disable_interrupts(struct phy_device *phydev)
 
 	return err;
 }
-EXPORT_SYMBOL(phy_disable_interrupts);
-
-/* phy_start_interrupts
- *
- * description: Request the interrupt for the given PHY.  If
- *   this fails, then we set irq to PHY_POLL.
- *   Otherwise, we enable the interrupts in the PHY.
- *   Returns 0 on success.
- *   This should only be called with a valid IRQ number.
- */
-int phy_start_interrupts(struct phy_device *phydev)
-{
-	int err = 0;
-
-	INIT_WORK(&phydev->phy_queue, phy_change, phydev);
-
-	if (request_irq(phydev->irq, phy_interrupt,
-				SA_SHIRQ,
-				"phy_interrupt",
-				phydev) < 0) {
-		printk(KERN_WARNING "%s: Can't get IRQ %d (PHY)\n",
-				phydev->bus->name,
-				phydev->irq);
-		phydev->irq = PHY_POLL;
-		return 0;
-	}
-
-	err = phy_enable_interrupts(phydev);
-
-	return err;
-}
-EXPORT_SYMBOL(phy_start_interrupts);
-
-int phy_stop_interrupts(struct phy_device *phydev)
-{
-	int err;
-
-	err = phy_disable_interrupts(phydev);
-
-	if (err)
-		phy_error(phydev);
-
-	free_irq(phydev->irq, phydev);
-
-	return err;
-}
-EXPORT_SYMBOL(phy_stop_interrupts);
-
-
-/* Scheduled by the phy_interrupt/timer to handle PHY changes */
-static void phy_change(void *data)
-{
-	int err;
-	struct phy_device *phydev = data;
-
-	err = phy_disable_interrupts(phydev);
-
-	if (err)
-		goto phy_err;
-
-	spin_lock(&phydev->lock);
-	if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state))
-		phydev->state = PHY_CHANGELINK;
-	spin_unlock(&phydev->lock);
-
-	enable_irq(phydev->irq);
-
-	/* Reenable interrupts */
-	err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
-
-	if (err)
-		goto irq_enable_err;
-
-	return;
-
-irq_enable_err:
-	disable_irq(phydev->irq);
-phy_err:
-	phy_error(phydev);
-}
-
-/* Bring down the PHY link, and stop checking the status. */
-void phy_stop(struct phy_device *phydev)
-{
-	spin_lock(&phydev->lock);
-
-	if (PHY_HALTED == phydev->state)
-		goto out_unlock;
-
-	if (phydev->irq != PHY_POLL) {
-		/* Clear any pending interrupts */
-		phy_clear_interrupt(phydev);
-
-		/* Disable PHY Interrupts */
-		phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
-	}
-
-	phydev->state = PHY_HALTED;
-
-out_unlock:
-	spin_unlock(&phydev->lock);
-}
-
-
-/* phy_start
- *
- * description: Indicates the attached device's readiness to
- *   handle PHY-related work.  Used during startup to start the
- *   PHY, and after a call to phy_stop() to resume operation.
- *   Also used to indicate the MDIO bus has cleared an error
- *   condition.
- */
-void phy_start(struct phy_device *phydev)
-{
-	spin_lock(&phydev->lock);
-
-	switch (phydev->state) {
-		case PHY_STARTING:
-			phydev->state = PHY_PENDING;
-			break;
-		case PHY_READY:
-			phydev->state = PHY_UP;
-			break;
-		case PHY_HALTED:
-			phydev->state = PHY_RESUMING;
-		default:
-			break;
-	}
-	spin_unlock(&phydev->lock);
-}
-EXPORT_SYMBOL(phy_stop);
-EXPORT_SYMBOL(phy_start);
-
-#endif /* CONFIG_PHYCONTROL */
 
 /* PHY timer which handles the state machine */
 static void phy_timer(unsigned long data)

drivers/net/phy/phy_device.c

@@ -124,133 +124,6 @@ void phy_prepare_link(struct phy_device *phydev,
 	phydev->adjust_link = handler;
 }
 
-#ifdef CONFIG_PHYCONTROL
-/* phy_connect:
- *
- * 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
- *   don't want, or can't use the provided functionality, you may
- *   choose to call only the subset of functions which provide
- *   the desired functionality.
- */
-struct phy_device * phy_connect(struct net_device *dev, const char *phy_id,
-		void (*handler)(struct net_device *), u32 flags)
-{
-	struct phy_device *phydev;
-
-	phydev = phy_attach(dev, phy_id, flags);
-
-	if (IS_ERR(phydev))
-		return phydev;
-
-	phy_prepare_link(phydev, handler);
-
-	phy_start_machine(phydev, NULL);
-
-	if (phydev->irq > 0)
-		phy_start_interrupts(phydev);
-
-	return phydev;
-}
-EXPORT_SYMBOL(phy_connect);
-
-void phy_disconnect(struct phy_device *phydev)
-{
-	if (phydev->irq > 0)
-		phy_stop_interrupts(phydev);
-
-	phy_stop_machine(phydev);
-	
-	phydev->adjust_link = NULL;
-
-	phy_detach(phydev);
-}
-EXPORT_SYMBOL(phy_disconnect);
-
-#endif /* CONFIG_PHYCONTROL */
-
-/* phy_attach:
- *
- *   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.
- */
-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)
-{
-	struct bus_type *bus = &mdio_bus_type;
-	struct phy_device *phydev;
-	struct device *d;
-
-	/* Search the list of PHY devices on the mdio bus for the
-	 * PHY with the requested name */
-	d = bus_find_device(bus, NULL, (void *)phy_id, phy_compare_id);
-
-	if (d) {
-		phydev = to_phy_device(d);
-	} else {
-		printk(KERN_ERR "%s not found\n", phy_id);
-		return ERR_PTR(-ENODEV);
-	}
-
-	/* Assume that if there is no driver, that it doesn't
-	 * exist, and we should use the genphy driver. */
-	if (NULL == d->driver) {
-		int err;
-		down_write(&d->bus->subsys.rwsem);
-		d->driver = &genphy_driver.driver;
-
-		err = d->driver->probe(d);
-
-		if (err < 0)
-			return ERR_PTR(err);
-
-		device_bind_driver(d);
-		up_write(&d->bus->subsys.rwsem);
-	}
-
-	if (phydev->attached_dev) {
-		printk(KERN_ERR "%s: %s already attached\n",
-				dev->name, phy_id);
-		return ERR_PTR(-EBUSY);
-	}
-
-	phydev->attached_dev = dev;
-
-	phydev->dev_flags = flags;
-
-	return phydev;
-}
-EXPORT_SYMBOL(phy_attach);
-
-void phy_detach(struct phy_device *phydev)
-{
-	phydev->attached_dev = NULL;
-
-	/* If the device had no specific driver before (i.e. - it
-	 * was using the generic driver), we unbind the device
-	 * from the generic driver so that there's a chance a
-	 * real driver could be loaded */
-	if (phydev->dev.driver == &genphy_driver.driver) {
-		down_write(&phydev->dev.bus->subsys.rwsem);
-		device_release_driver(&phydev->dev);
-		up_write(&phydev->dev.bus->subsys.rwsem);
-	}
-}
-EXPORT_SYMBOL(phy_detach);
-
-
 /* Generic PHY support and helper functions */
 
 /* genphy_config_advert
@@ -259,7 +132,7 @@ EXPORT_SYMBOL(phy_detach);
  *   after sanitizing the values to make sure we only advertise
  *   what is supported
  */
-int genphy_config_advert(struct phy_device *phydev)
+static int genphy_config_advert(struct phy_device *phydev)
 {
 	u32 advertise;
 	int adv;
@@ -317,7 +190,6 @@ int genphy_config_advert(struct phy_device *phydev)
 
 	return adv;
 }
-EXPORT_SYMBOL(genphy_config_advert);
 
 /* genphy_setup_forced
  *

include/linux/phy.h

@@ -334,26 +334,11 @@ int phy_write(struct phy_device *phydev, u16 regnum, u16 val);
 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);
-struct phy_device * phy_connect(struct net_device *dev, const char *phy_id,
-		void (*handler)(struct net_device *), u32 flags);
-void phy_disconnect(struct phy_device *phydev);
-void phy_detach(struct phy_device *phydev);
-void phy_start(struct phy_device *phydev);
-void phy_stop(struct phy_device *phydev);
-int phy_start_aneg(struct phy_device *phydev);
-
-int mdiobus_register(struct mii_bus *bus);
-void mdiobus_unregister(struct mii_bus *bus);
-void phy_sanitize_settings(struct phy_device *phydev);
-int phy_stop_interrupts(struct phy_device *phydev);
 
 static inline int phy_read_status(struct phy_device *phydev) {
 	return phydev->drv->read_status(phydev);
 }
 
-int genphy_config_advert(struct phy_device *phydev);
 int genphy_setup_forced(struct phy_device *phydev);
 int genphy_restart_aneg(struct phy_device *phydev);
 int genphy_config_aneg(struct phy_device *phydev);
@@ -370,8 +355,6 @@ int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 int phy_mii_ioctl(struct phy_device *phydev,
 		struct mii_ioctl_data *mii_data, int cmd);
-int phy_start_interrupts(struct phy_device *phydev);
-void phy_print_status(struct phy_device *phydev);
 
 extern struct bus_type mdio_bus_type;
 #endif /* __PHY_H */