net: bcmgenet: request Wake-on-LAN interrupt

Attempt to the request the Wake-on-LAN interrupt bit, and if successful,
advertise wakeup capability instead of doing this unconditionnally.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index bbd8bf3..344a889 100644 (file)
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1918,6 +1918,15 @@ static irqreturn_t bcmgenet_isr0(int irq, void *dev_id)
        return IRQ_HANDLED;
 }
 
+static irqreturn_t bcmgenet_wol_isr(int irq, void *dev_id)
+{
+       struct bcmgenet_priv *priv = dev_id;
+
+       pm_wakeup_event(&priv->pdev->dev, 0);
+
+       return IRQ_HANDLED;
+}
+
 static void bcmgenet_umac_reset(struct bcmgenet_priv *priv)
 {
        u32 reg;
@@ -2046,8 +2055,6 @@ static int bcmgenet_open(struct net_device *dev)
                bcmgenet_ext_writel(priv, reg, EXT_EXT_PWR_MGMT);
        }
 
-       device_set_wakeup_capable(&dev->dev, 1);
-
        /* Disable RX/TX DMA and flush TX queues */
        dma_ctrl = bcmgenet_dma_disable(priv);
 
@@ -2473,6 +2480,7 @@ static int bcmgenet_probe(struct platform_device *pdev)
        priv = netdev_priv(dev);
        priv->irq0 = platform_get_irq(pdev, 0);
        priv->irq1 = platform_get_irq(pdev, 1);
+       priv->wol_irq = platform_get_irq(pdev, 2);
        if (!priv->irq0 || !priv->irq1) {
                dev_err(&pdev->dev, "can't find IRQs\n");
                err = -EINVAL;
@@ -2507,6 +2515,13 @@ static int bcmgenet_probe(struct platform_device *pdev)
        dev->hw_features |= NETIF_F_SG | NETIF_F_IP_CSUM |
                NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
 
+       /* Request the WOL interrupt and advertise suspend if available */
+       priv->wol_irq_disabled = true;
+       err = devm_request_irq(&pdev->dev, priv->wol_irq, bcmgenet_wol_isr, 0,
+                              dev->name, priv);
+       if (!err)
+               device_set_wakeup_capable(&pdev->dev, 1);
+
        /* Set the needed headroom to account for any possible
         * features enabling/disabling at runtime
         */

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
index f4891a1..64bc53d 100644 (file)
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
@@ -569,6 +569,8 @@ struct bcmgenet_priv {
        int irq1;
        unsigned int irq0_stat;
        unsigned int irq1_stat;
+       int wol_irq;
+       bool wol_irq_disabled;
 
        /* HW descriptors/checksum variables */
        bool desc_64b_en;