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Subject[PATCH RFC v1 5/7] net: mv643xx_eth: resume/suspend PHY on port start/stop
Date
Network PHYs consume a noticable amount of power. This adds phy_resume
on port start and phy_suspend on port stop to save this power if the
port is down anyway. While at it, also properly start/stop the phy.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
---
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
drivers/net/ethernet/marvell/mv643xx_eth.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 00cd36e..55805b2 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2097,6 +2097,8 @@ static void port_start(struct mv643xx_eth_private *mp)

mv643xx_eth_get_settings(mp->dev, &cmd);
phy_reset(mp);
+ phy_resume(mp->phy);
+ phy_start(mp->phy);
mv643xx_eth_set_settings(mp->dev, &cmd);
}

@@ -2306,6 +2308,11 @@ static int mv643xx_eth_stop(struct net_device *dev)
for (i = 0; i < mp->txq_count; i++)
txq_deinit(mp->txq + i);

+ if (mp->phy) {
+ phy_stop(mp->phy);
+ phy_suspend(mp->phy);
+ }
+
return 0;
}

--
1.7.2.5


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