net: bcmgenet: suspend and resume from Wake-on-LAN
Update bcmgenet_suspend() to prepare the hardware for being put into
Wake-on-LAN mode if the device can wakeup the system, and Wake-on-LAN is
enabled. Whether we resume from Wake-on-LAN or not, make sure that
bcmgenet_resume() disables the UniMAC MagicPacket matching mode and puts
the hardware in a state where it can receive all incoming packets.
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 1925ae1..62ef49c 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -2635,6 +2635,12 @@
bcmgenet_tx_reclaim_all(dev);
bcmgenet_fini_dma(priv);
+ /* Prepare the device for Wake-on-LAN and switch to the slow clock */
+ if (device_may_wakeup(d) && priv->wolopts) {
+ bcmgenet_power_down(priv, GENET_POWER_WOL_MAGIC);
+ clk_prepare_enable(priv->clk_wol);
+ }
+
/* Turn off the clocks */
clk_disable_unprepare(priv->clk);
@@ -2663,6 +2669,12 @@
if (ret)
goto out_clk_disable;
+ if (priv->wolopts)
+ ret = bcmgenet_wol_resume(priv);
+
+ if (ret)
+ goto out_clk_disable;
+
/* disable ethernet MAC while updating its registers */
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, false);