diff options
| -rw-r--r-- | drivers/net/fec.c | 15 | ||||
| -rw-r--r-- | include/linux/fec.h | 1 |
2 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index fd519571cbb..2022af73e19 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -42,6 +42,7 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/clk.h> +#include <mach/clock.h> #include <linux/platform_device.h> #include <linux/phy.h> #include <linux/fec.h> @@ -697,6 +698,7 @@ static void fec_enet_adjust_link(struct net_device *dev) { struct fec_enet_private *fep = netdev_priv(dev); struct phy_device *phy_dev = fep->phy_dev; + struct fec_platform_data *pdata = fep->pdev->dev.platform_data; unsigned long flags; int status_change = 0; @@ -711,6 +713,8 @@ static void fec_enet_adjust_link(struct net_device *dev) /* Duplex link change */ if (phy_dev->link) { + if (!clk_get_usecount(fep->clk)) + clk_enable(fep->clk); if (fep->full_duplex != phy_dev->duplex) { fec_restart(dev, phy_dev->duplex); status_change = 1; @@ -730,8 +734,11 @@ static void fec_enet_adjust_link(struct net_device *dev) spin_unlock: spin_unlock_irqrestore(&fep->hw_lock, flags); - if (status_change) + if (status_change) { + if (!phy_dev->link && phy_dev && pdata && pdata->power_hibernate) + pdata->power_hibernate(phy_dev); phy_print_status(phy_dev); + } } static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) @@ -1086,6 +1093,8 @@ fec_enet_open(struct net_device *dev) * a simple way to do that. */ + if (!clk_get_usecount(fep->clk)) + clk_enable(fep->clk); ret = fec_enet_alloc_buffers(dev); if (ret) return ret; @@ -1123,6 +1132,10 @@ fec_enet_close(struct net_device *dev) fec_enet_free_buffers(dev); + /* Clock gate close for saving power */ + if (clk_get_usecount(fep->clk)) + clk_disable(fep->clk); + return 0; } diff --git a/include/linux/fec.h b/include/linux/fec.h index d6a07048f84..8f69cb58d45 100644 --- a/include/linux/fec.h +++ b/include/linux/fec.h @@ -18,6 +18,7 @@ struct fec_platform_data { int (*init) (struct phy_device *); + int (*power_hibernate) (struct phy_device *); phy_interface_t phy; unsigned char mac[ETH_ALEN]; }; |