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Subject[PATCH RFC v1 7/7] net: cpsw: resume/suspend PHY on port start/stop
Date
Network PHYs consume a noticable amount of power. This adds phy_resume
on slave_open and phy_suspend on slave_stop to save this power if the
port is down anyway.

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/ti/cpsw.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 90d41d2..f1dc54f 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1013,6 +1013,7 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
} else {
dev_info(priv->dev, "phy found : id is : 0x%x\n",
slave->phy->phy_id);
+ phy_resume(slave->phy);
phy_start(slave->phy);

/* Configure GMII_SEL register */
@@ -1081,6 +1082,7 @@ static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
if (!slave->phy)
return;
phy_stop(slave->phy);
+ phy_suspend(slave->phy);
phy_disconnect(slave->phy);
slave->phy = NULL;
}
--
1.7.2.5


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