linux-kernel - [PATCH RFC v1 6/7] net: mvneta: resume/suspend PHY on port start/stop

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Date:	Wed, 20 Nov 2013 21:21:52 +0100
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFC v1 6/7] net: mvneta: resume/suspend PHY on port start/stop

Network PHYs consume a noticable amount of power. This adds phy_resume
on start_dev and phy_suspend on stop_dev to save this power if the
port is down anyway.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
---
Cc: David S. Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/net/ethernet/marvell/mvneta.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index b8e232b..8688e91 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2194,6 +2194,7 @@ static void mvneta_start_dev(struct mvneta_port *pp)
 	mvreg_write(pp, MVNETA_INTR_NEW_MASK,
 		    MVNETA_RX_INTR_MASK(rxq_number));
 
+	phy_resume(pp->phy_dev);
 	phy_start(pp->phy_dev);
 	netif_tx_start_all_queues(pp->dev);
 }
@@ -2201,6 +2202,7 @@ static void mvneta_start_dev(struct mvneta_port *pp)
 static void mvneta_stop_dev(struct mvneta_port *pp)
 {
 	phy_stop(pp->phy_dev);
+	phy_suspend(pp->phy_dev);
 
 	napi_disable(&pp->napi);
 
-- 
1.7.2.5

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