diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/arm/at91_ether.c | 61 |
1 files changed, 43 insertions, 18 deletions
diff --git a/drivers/net/arm/at91_ether.c b/drivers/net/arm/at91_ether.c index 5503dc8a66e..5b5095629a9 100644 --- a/drivers/net/arm/at91_ether.c +++ b/drivers/net/arm/at91_ether.c @@ -45,6 +45,9 @@ static struct net_device *at91_dev; static struct clk *ether_clk; +static struct timer_list check_timer; +#define LINK_POLL_INTERVAL (HZ) + /* ..................................................................... */ /* @@ -143,7 +146,7 @@ static void read_phy(unsigned char phy_addr, unsigned char address, unsigned int * MAC accordingly. * If no link or auto-negotiation is busy, then no changes are made. */ -static void update_linkspeed(struct net_device *dev) +static void update_linkspeed(struct net_device *dev, int silent) { struct at91_private *lp = (struct at91_private *) dev->priv; unsigned int bmsr, bmcr, lpa, mac_cfg; @@ -151,7 +154,8 @@ static void update_linkspeed(struct net_device *dev) if (!mii_link_ok(&lp->mii)) { /* no link */ netif_carrier_off(dev); - printk(KERN_INFO "%s: Link down.\n", dev->name); + if (!silent) + printk(KERN_INFO "%s: Link down.\n", dev->name); return; } @@ -186,7 +190,8 @@ static void update_linkspeed(struct net_device *dev) } at91_emac_write(AT91_EMAC_CFG, mac_cfg); - printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex"); + if (!silent) + printk(KERN_INFO "%s: Link now %i-%s\n", dev->name, speed, (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex"); netif_carrier_on(dev); } @@ -226,7 +231,7 @@ static irqreturn_t at91ether_phy_interrupt(int irq, void *dev_id, struct pt_regs goto done; } - update_linkspeed(dev); + update_linkspeed(dev, 0); done: disable_mdi(); @@ -243,14 +248,17 @@ static void enable_phyirq(struct net_device *dev) unsigned int dsintr, irq_number; int status; - if (lp->phy_type == MII_RTL8201_ID) /* RTL8201 does not have an interrupt */ - return; - if (lp->phy_type == MII_DP83847_ID) /* DP83847 does not have an interrupt */ - return; - if (lp->phy_type == MII_AC101L_ID) /* AC101L interrupt not supported yet */ + irq_number = lp->board_data.phy_irq_pin; + if (!irq_number) { + /* + * PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L), + * or board does not have it connected. + */ + check_timer.expires = jiffies + LINK_POLL_INTERVAL; + add_timer(&check_timer); return; + } - irq_number = lp->board_data.phy_irq_pin; status = request_irq(irq_number, at91ether_phy_interrupt, 0, dev->name, dev); if (status) { printk(KERN_ERR "at91_ether: PHY IRQ %d request failed - status %d!\n", irq_number, status); @@ -292,12 +300,11 @@ static void disable_phyirq(struct net_device *dev) unsigned int dsintr; unsigned int irq_number; - if (lp->phy_type == MII_RTL8201_ID) /* RTL8201 does not have an interrupt */ - return; - if (lp->phy_type == MII_DP83847_ID) /* DP83847 does not have an interrupt */ - return; - if (lp->phy_type == MII_AC101L_ID) /* AC101L interrupt not supported yet */ + irq_number = lp->board_data.phy_irq_pin; + if (!irq_number) { + del_timer_sync(&check_timer); return; + } spin_lock_irq(&lp->lock); enable_mdi(); @@ -326,7 +333,6 @@ static void disable_phyirq(struct net_device *dev) disable_mdi(); spin_unlock_irq(&lp->lock); - irq_number = lp->board_data.phy_irq_pin; free_irq(irq_number, dev); /* Free interrupt handler */ } @@ -355,6 +361,18 @@ static void reset_phy(struct net_device *dev) } #endif +static void at91ether_check_link(unsigned long dev_id) +{ + struct net_device *dev = (struct net_device *) dev_id; + + enable_mdi(); + update_linkspeed(dev, 1); + disable_mdi(); + + check_timer.expires = jiffies + LINK_POLL_INTERVAL; + add_timer(&check_timer); +} + /* ......................... ADDRESS MANAGEMENT ........................ */ /* @@ -708,7 +726,7 @@ static int at91ether_open(struct net_device *dev) /* Determine current link speed */ spin_lock_irq(&lp->lock); enable_mdi(); - update_linkspeed(dev); + update_linkspeed(dev, 0); disable_mdi(); spin_unlock_irq(&lp->lock); @@ -992,11 +1010,18 @@ static int __init at91ether_setup(unsigned long phy_type, unsigned short phy_add /* Determine current link speed */ spin_lock_irq(&lp->lock); enable_mdi(); - update_linkspeed(dev); + update_linkspeed(dev, 0); disable_mdi(); spin_unlock_irq(&lp->lock); netif_carrier_off(dev); /* will be enabled in open() */ + /* If board has no PHY IRQ, use a timer to poll the PHY */ + if (!lp->board_data.phy_irq_pin) { + init_timer(&check_timer); + check_timer.data = (unsigned long)dev; + check_timer.function = at91ether_check_link; + } + /* Display ethernet banner */ printk(KERN_INFO "%s: AT91 ethernet at 0x%08x int=%d %s%s (%02x:%02x:%02x:%02x:%02x:%02x)\n", dev->name, (uint) dev->base_addr, dev->irq, |