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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>
hifive-unleashed-5.1
Florian Fainelli 2014-07-21 15:29:28 -07:00 committed by David S. Miller
parent 1c3c1e7996
commit 8c90db72f9
1 changed files with 12 additions and 0 deletions
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12
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -2635,6 +2635,12 @@ static int bcmgenet_suspend(struct device *d)
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 @@ static int bcmgenet_resume(struct device *d)
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);