stmmac: review the wake-up support
Giuseppe Cavallaro [Sat, 25 Sep 2010 04:27:41 +0000 (21:27 -0700)]
If the PM support is available this is passed
through the platform instead to be hard-coded
in the core files.
WoL on Magic Frame can be enabled by using
the ethtool support.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/stmmac/common.h
drivers/net/stmmac/dwmac1000_core.c
drivers/net/stmmac/dwmac100_core.c
drivers/net/stmmac/stmmac_ethtool.c
drivers/net/stmmac/stmmac_main.c
include/linux/stmmac.h

index 673ef86..dec7ce4 100644 (file)
@@ -238,7 +238,6 @@ struct mac_device_info {
        struct stmmac_ops       *mac;
        struct stmmac_desc_ops  *desc;
        struct stmmac_dma_ops   *dma;
-       unsigned int pmt;       /* support Power-Down */
        struct mii_regs mii;    /* MII register Addresses */
        struct mac_link link;
 };
index c18c859..65667b6 100644 (file)
@@ -239,7 +239,6 @@ struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr)
        mac->mac = &dwmac1000_ops;
        mac->dma = &dwmac1000_dma_ops;
 
-       mac->pmt = PMT_SUPPORTED;
        mac->link.port = GMAC_CONTROL_PS;
        mac->link.duplex = GMAC_CONTROL_DM;
        mac->link.speed = GMAC_CONTROL_FES;
index 58a914b..94eeccf 100644 (file)
@@ -193,7 +193,6 @@ struct mac_device_info *dwmac100_setup(void __iomem *ioaddr)
        mac->mac = &dwmac100_ops;
        mac->dma = &dwmac100_dma_ops;
 
-       mac->pmt = PMT_NOT_SUPPORTED;
        mac->link.port = MAC_CONTROL_PS;
        mac->link.duplex = MAC_CONTROL_F;
        mac->link.speed = 0;
index b32c16a..25a7e38 100644 (file)
@@ -322,7 +322,7 @@ static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
        struct stmmac_priv *priv = netdev_priv(dev);
 
        spin_lock_irq(&priv->lock);
-       if (priv->wolenabled == PMT_SUPPORTED) {
+       if (device_can_wakeup(priv->device)) {
                wol->supported = WAKE_MAGIC;
                wol->wolopts = priv->wolopts;
        }
@@ -334,16 +334,20 @@ static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
        struct stmmac_priv *priv = netdev_priv(dev);
        u32 support = WAKE_MAGIC;
 
-       if (priv->wolenabled == PMT_NOT_SUPPORTED)
+       if (!device_can_wakeup(priv->device))
                return -EINVAL;
 
        if (wol->wolopts & ~support)
                return -EINVAL;
 
-       if (wol->wolopts == 0)
-               device_set_wakeup_enable(priv->device, 0);
-       else
+       if (wol->wolopts) {
+               pr_info("stmmac: wakeup enable\n");
                device_set_wakeup_enable(priv->device, 1);
+               enable_irq_wake(dev->irq);
+       } else {
+               device_set_wakeup_enable(priv->device, 0);
+               disable_irq_wake(dev->irq);
+       }
 
        spin_lock_irq(&priv->lock);
        priv->wolopts = wol->wolopts;
index a908f72..823b9e6 100644 (file)
@@ -1568,9 +1568,8 @@ static int stmmac_mac_device_setup(struct net_device *dev)
 
        priv->hw = device;
 
-       priv->wolenabled = priv->hw->pmt;       /* PMT supported */
-       if (priv->wolenabled == PMT_SUPPORTED)
-               priv->wolopts = WAKE_MAGIC;             /* Magic Frame */
+       if (device_can_wakeup(priv->device))
+               priv->wolopts = WAKE_MAGIC; /* Magic Frame as default */
 
        return 0;
 }
@@ -1709,6 +1708,12 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
        priv->enh_desc = plat_dat->enh_desc;
        priv->ioaddr = addr;
 
+       /* PMT module is not integrated in all the MAC devices. */
+       if (plat_dat->pmt) {
+               pr_info("\tPMT module supported\n");
+               device_set_wakeup_capable(&pdev->dev, 1);
+       }
+
        platform_set_drvdata(pdev, ndev);
 
        /* Set the I/O base addr */
@@ -1836,13 +1841,11 @@ static int stmmac_suspend(struct platform_device *pdev, pm_message_t state)
 
                stmmac_mac_disable_tx(priv->ioaddr);
 
-               if (device_may_wakeup(&(pdev->dev))) {
-                       /* Enable Power down mode by programming the PMT regs */
-                       if (priv->wolenabled == PMT_SUPPORTED)
-                               priv->hw->mac->pmt(priv->ioaddr, priv->wolopts);
-               } else {
+               /* Enable Power down mode by programming the PMT regs */
+               if (device_can_wakeup(priv->device))
+                       priv->hw->mac->pmt(priv->ioaddr, priv->wolopts);
+               else
                        stmmac_mac_disable_rx(priv->ioaddr);
-               }
        } else {
                priv->shutdown = 1;
                /* Although this can appear slightly redundant it actually
@@ -1877,9 +1880,8 @@ static int stmmac_resume(struct platform_device *pdev)
         * is received. Anyway, it's better to manually clear
         * this bit because it can generate problems while resuming
         * from another devices (e.g. serial console). */
-       if (device_may_wakeup(&(pdev->dev)))
-               if (priv->wolenabled == PMT_SUPPORTED)
-                       priv->hw->mac->pmt(priv->ioaddr, 0);
+       if (device_can_wakeup(priv->device))
+               priv->hw->mac->pmt(priv->ioaddr, 0);
 
        netif_device_attach(dev);
 
index 1d8baf7..d66c617 100644 (file)
@@ -37,6 +37,7 @@ struct plat_stmmacenet_data {
        int enh_desc;
        int tx_coe;
        int bugged_jumbo;
+       int pmt;
        void (*fix_mac_speed)(void *priv, unsigned int speed);
        void (*bus_setup)(void __iomem *ioaddr);
 #ifdef CONFIG_STM_DRIVERS