phy subsystem: more cleanups
- unexport symbols never used outside of home module - remove dead code - remove CONFIG_PHYCONTROL, make it unconditionally enabledhifive-unleashed-5.1
Jeff Garzik
parent
67c4f3fa25
commit
2bf69b5fe9
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@ -12,14 +12,6 @@ config PHYLIB
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devices. This option provides infrastructure for
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managing PHY devices.
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config PHYCONTROL
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bool "Support for automatically handling PHY state changes"
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depends on PHYLIB
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help
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Adds code to perform all the work for keeping PHY link
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state (speed/duplex/etc) up-to-date. Also handles
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interrupts.
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comment "MII PHY device drivers"
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depends on PHYLIB
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@ -38,80 +38,6 @@
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#include <asm/irq.h>
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#include <asm/uaccess.h>
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/* mdiobus_register
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*
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* description: Called by a bus driver to bring up all the PHYs
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* on a given bus, and attach them to the bus
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*/
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int mdiobus_register(struct mii_bus *bus)
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{
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int i;
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int err = 0;
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spin_lock_init(&bus->mdio_lock);
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if (NULL == bus || NULL == bus->name ||
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NULL == bus->read ||
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NULL == bus->write)
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return -EINVAL;
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if (bus->reset)
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bus->reset(bus);
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for (i = 0; i < PHY_MAX_ADDR; i++) {
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struct phy_device *phydev;
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phydev = get_phy_device(bus, i);
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if (IS_ERR(phydev))
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return PTR_ERR(phydev);
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/* There's a PHY at this address
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* We need to set:
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* 1) IRQ
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* 2) bus_id
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* 3) parent
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* 4) bus
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* 5) mii_bus
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* And, we need to register it */
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if (phydev) {
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phydev->irq = bus->irq[i];
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phydev->dev.parent = bus->dev;
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phydev->dev.bus = &mdio_bus_type;
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sprintf(phydev->dev.bus_id, "phy%d:%d", bus->id, i);
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phydev->bus = bus;
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err = device_register(&phydev->dev);
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if (err)
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printk(KERN_ERR "phy %d failed to register\n",
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i);
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}
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bus->phy_map[i] = phydev;
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}
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pr_info("%s: probed\n", bus->name);
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return err;
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}
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EXPORT_SYMBOL(mdiobus_register);
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void mdiobus_unregister(struct mii_bus *bus)
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{
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int i;
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for (i = 0; i < PHY_MAX_ADDR; i++) {
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if (bus->phy_map[i]) {
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device_unregister(&bus->phy_map[i]->dev);
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kfree(bus->phy_map[i]);
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}
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}
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}
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EXPORT_SYMBOL(mdiobus_unregister);
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/* mdio_bus_match
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*
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* description: Given a PHY device, and a PHY driver, return 1 if
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@ -40,21 +40,9 @@
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#include <asm/uaccess.h>
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static void phy_timer(unsigned long data);
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/* Convenience function to print out the current phy status
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*/
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void phy_print_status(struct phy_device *phydev)
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{
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pr_info("%s: Link is %s", phydev->dev.bus_id,
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phydev->link ? "Up" : "Down");
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if (phydev->link)
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printk(" - %d/%s", phydev->speed,
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DUPLEX_FULL == phydev->duplex ?
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"Full" : "Half");
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printk("\n");
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}
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EXPORT_SYMBOL(phy_print_status);
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static int phy_disable_interrupts(struct phy_device *phydev);
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static void phy_sanitize_settings(struct phy_device *phydev);
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static int phy_stop_interrupts(struct phy_device *phydev);
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/* Convenience functions for reading/writing a given PHY
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@ -133,7 +121,7 @@ static inline int phy_aneg_done(struct phy_device *phydev)
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* and to PHY_FORCING if auto-negotiation is disabled. Unless
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* the PHY is currently HALTED.
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*/
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int phy_start_aneg(struct phy_device *phydev)
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static int phy_start_aneg(struct phy_device *phydev)
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{
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int err;
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@ -161,8 +149,6 @@ out_unlock:
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spin_unlock(&phydev->lock);
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return err;
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}
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EXPORT_SYMBOL(phy_start_aneg);
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/* A structure for mapping a particular speed and duplex
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* combination to a particular SUPPORTED and ADVERTISED value */
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@ -255,7 +241,7 @@ static inline int phy_find_valid(int idx, u32 features)
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* duplexes. Drop down by one in this order: 1000/FULL,
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* 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF
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*/
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void phy_sanitize_settings(struct phy_device *phydev)
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static void phy_sanitize_settings(struct phy_device *phydev)
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{
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u32 features = phydev->supported;
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int idx;
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@ -270,7 +256,6 @@ void phy_sanitize_settings(struct phy_device *phydev)
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phydev->speed = settings[idx].speed;
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phydev->duplex = settings[idx].duplex;
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}
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EXPORT_SYMBOL(phy_sanitize_settings);
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/* phy_force_reduction
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*
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@ -477,48 +462,22 @@ void phy_error(struct phy_device *phydev)
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spin_unlock(&phydev->lock);
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}
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#ifdef CONFIG_PHYCONTROL
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static void phy_change(void *data);
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/* phy_interrupt
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*
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* description: When a PHY interrupt occurs, the handler disables
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* interrupts, and schedules a work task to clear the interrupt.
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*/
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static irqreturn_t phy_interrupt(int irq, void *phy_dat, struct pt_regs *regs)
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{
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struct phy_device *phydev = phy_dat;
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/* The MDIO bus is not allowed to be written in interrupt
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* context, so we need to disable the irq here. A work
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* queue will write the PHY to disable and clear the
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* interrupt, and then reenable the irq line. */
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disable_irq_nosync(irq);
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schedule_work(&phydev->phy_queue);
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return IRQ_HANDLED;
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}
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/* Enable the interrupts from the PHY side */
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int phy_enable_interrupts(struct phy_device *phydev)
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static int phy_stop_interrupts(struct phy_device *phydev)
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{
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int err;
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err = phy_clear_interrupt(phydev);
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err = phy_disable_interrupts(phydev);
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if (err < 0)
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return err;
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if (err)
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phy_error(phydev);
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err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
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free_irq(phydev->irq, phydev);
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return err;
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}
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EXPORT_SYMBOL(phy_enable_interrupts);
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/* Disable the PHY interrupts from the PHY side */
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int phy_disable_interrupts(struct phy_device *phydev)
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static int phy_disable_interrupts(struct phy_device *phydev)
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{
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int err;
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@ -541,140 +500,6 @@ phy_err:
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return err;
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}
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EXPORT_SYMBOL(phy_disable_interrupts);
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/* phy_start_interrupts
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*
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* description: Request the interrupt for the given PHY. If
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* this fails, then we set irq to PHY_POLL.
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* Otherwise, we enable the interrupts in the PHY.
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* Returns 0 on success.
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* This should only be called with a valid IRQ number.
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*/
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int phy_start_interrupts(struct phy_device *phydev)
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{
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int err = 0;
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INIT_WORK(&phydev->phy_queue, phy_change, phydev);
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if (request_irq(phydev->irq, phy_interrupt,
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SA_SHIRQ,
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"phy_interrupt",
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phydev) < 0) {
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printk(KERN_WARNING "%s: Can't get IRQ %d (PHY)\n",
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phydev->bus->name,
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phydev->irq);
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phydev->irq = PHY_POLL;
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return 0;
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}
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err = phy_enable_interrupts(phydev);
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return err;
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}
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EXPORT_SYMBOL(phy_start_interrupts);
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int phy_stop_interrupts(struct phy_device *phydev)
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{
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int err;
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err = phy_disable_interrupts(phydev);
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if (err)
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phy_error(phydev);
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free_irq(phydev->irq, phydev);
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return err;
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}
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EXPORT_SYMBOL(phy_stop_interrupts);
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/* Scheduled by the phy_interrupt/timer to handle PHY changes */
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static void phy_change(void *data)
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{
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int err;
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struct phy_device *phydev = data;
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err = phy_disable_interrupts(phydev);
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if (err)
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goto phy_err;
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spin_lock(&phydev->lock);
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if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state))
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phydev->state = PHY_CHANGELINK;
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spin_unlock(&phydev->lock);
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enable_irq(phydev->irq);
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/* Reenable interrupts */
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err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
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if (err)
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goto irq_enable_err;
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return;
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irq_enable_err:
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disable_irq(phydev->irq);
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phy_err:
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phy_error(phydev);
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}
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/* Bring down the PHY link, and stop checking the status. */
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void phy_stop(struct phy_device *phydev)
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{
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spin_lock(&phydev->lock);
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if (PHY_HALTED == phydev->state)
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goto out_unlock;
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if (phydev->irq != PHY_POLL) {
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/* Clear any pending interrupts */
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phy_clear_interrupt(phydev);
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/* Disable PHY Interrupts */
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phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
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}
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phydev->state = PHY_HALTED;
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out_unlock:
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spin_unlock(&phydev->lock);
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}
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/* phy_start
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*
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* description: Indicates the attached device's readiness to
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* handle PHY-related work. Used during startup to start the
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* PHY, and after a call to phy_stop() to resume operation.
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* Also used to indicate the MDIO bus has cleared an error
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* condition.
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*/
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void phy_start(struct phy_device *phydev)
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{
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spin_lock(&phydev->lock);
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switch (phydev->state) {
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case PHY_STARTING:
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phydev->state = PHY_PENDING;
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break;
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case PHY_READY:
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phydev->state = PHY_UP;
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break;
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case PHY_HALTED:
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phydev->state = PHY_RESUMING;
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default:
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break;
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}
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spin_unlock(&phydev->lock);
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}
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EXPORT_SYMBOL(phy_stop);
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EXPORT_SYMBOL(phy_start);
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#endif /* CONFIG_PHYCONTROL */
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/* PHY timer which handles the state machine */
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static void phy_timer(unsigned long data)
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@ -124,133 +124,6 @@ void phy_prepare_link(struct phy_device *phydev,
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phydev->adjust_link = handler;
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}
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#ifdef CONFIG_PHYCONTROL
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/* phy_connect:
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*
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* description: Convenience function for connecting ethernet
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* devices to PHY devices. The default behavior is for
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* the PHY infrastructure to handle everything, and only notify
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* the connected driver when the link status changes. If you
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* don't want, or can't use the provided functionality, you may
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* choose to call only the subset of functions which provide
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* the desired functionality.
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*/
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struct phy_device * phy_connect(struct net_device *dev, const char *phy_id,
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void (*handler)(struct net_device *), u32 flags)
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{
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struct phy_device *phydev;
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phydev = phy_attach(dev, phy_id, flags);
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if (IS_ERR(phydev))
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return phydev;
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phy_prepare_link(phydev, handler);
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phy_start_machine(phydev, NULL);
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if (phydev->irq > 0)
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phy_start_interrupts(phydev);
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return phydev;
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}
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EXPORT_SYMBOL(phy_connect);
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void phy_disconnect(struct phy_device *phydev)
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{
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if (phydev->irq > 0)
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phy_stop_interrupts(phydev);
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phy_stop_machine(phydev);
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phydev->adjust_link = NULL;
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phy_detach(phydev);
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}
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EXPORT_SYMBOL(phy_disconnect);
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#endif /* CONFIG_PHYCONTROL */
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/* phy_attach:
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*
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* description: Called by drivers to attach to a particular PHY
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* device. The phy_device is found, and properly hooked up
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* to the phy_driver. If no driver is attached, then the
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* genphy_driver is used. The phy_device is given a ptr to
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* the attaching device, and given a callback for link status
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* change. The phy_device is returned to the attaching
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* driver.
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*/
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static int phy_compare_id(struct device *dev, void *data)
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{
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return strcmp((char *)data, dev->bus_id) ? 0 : 1;
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}
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struct phy_device *phy_attach(struct net_device *dev,
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const char *phy_id, u32 flags)
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{
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struct bus_type *bus = &mdio_bus_type;
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struct phy_device *phydev;
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struct device *d;
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/* Search the list of PHY devices on the mdio bus for the
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* PHY with the requested name */
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d = bus_find_device(bus, NULL, (void *)phy_id, phy_compare_id);
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if (d) {
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phydev = to_phy_device(d);
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} else {
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printk(KERN_ERR "%s not found\n", phy_id);
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return ERR_PTR(-ENODEV);
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}
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/* Assume that if there is no driver, that it doesn't
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* exist, and we should use the genphy driver. */
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if (NULL == d->driver) {
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int err;
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down_write(&d->bus->subsys.rwsem);
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d->driver = &genphy_driver.driver;
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err = d->driver->probe(d);
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if (err < 0)
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return ERR_PTR(err);
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device_bind_driver(d);
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up_write(&d->bus->subsys.rwsem);
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}
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if (phydev->attached_dev) {
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printk(KERN_ERR "%s: %s already attached\n",
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dev->name, phy_id);
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return ERR_PTR(-EBUSY);
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}
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phydev->attached_dev = dev;
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phydev->dev_flags = flags;
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return phydev;
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}
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EXPORT_SYMBOL(phy_attach);
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void phy_detach(struct phy_device *phydev)
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{
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phydev->attached_dev = NULL;
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/* If the device had no specific driver before (i.e. - it
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* was using the generic driver), we unbind the device
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* from the generic driver so that there's a chance a
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* real driver could be loaded */
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if (phydev->dev.driver == &genphy_driver.driver) {
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down_write(&phydev->dev.bus->subsys.rwsem);
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device_release_driver(&phydev->dev);
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up_write(&phydev->dev.bus->subsys.rwsem);
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}
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}
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EXPORT_SYMBOL(phy_detach);
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/* Generic PHY support and helper functions */
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/* genphy_config_advert
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@ -259,7 +132,7 @@ EXPORT_SYMBOL(phy_detach);
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* after sanitizing the values to make sure we only advertise
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* what is supported
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*/
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int genphy_config_advert(struct phy_device *phydev)
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static int genphy_config_advert(struct phy_device *phydev)
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{
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u32 advertise;
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int adv;
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@ -317,7 +190,6 @@ int genphy_config_advert(struct phy_device *phydev)
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return adv;
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}
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EXPORT_SYMBOL(genphy_config_advert);
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/* genphy_setup_forced
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*
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@ -334,26 +334,11 @@ int phy_write(struct phy_device *phydev, u16 regnum, u16 val);
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struct phy_device* get_phy_device(struct mii_bus *bus, int addr);
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int phy_clear_interrupt(struct phy_device *phydev);
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int phy_config_interrupt(struct phy_device *phydev, u32 interrupts);
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struct phy_device * phy_attach(struct net_device *dev,
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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 */
|
||||
|
|
|
|||
Loading…
Reference in New Issue