summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorGiuseppe Cavallaro <peppe.cavallaro@st.com>2010-01-06 20:35:14 -0800
committerDavid S. Miller <davem@davemloft.net>2010-01-06 20:35:14 -0800
commit698244ace8b63896565022143ab19f141bc48993 (patch)
tree34996baa2d5b64c75f7508211a04f4642b095baa /drivers
parent635267130855e91f4681df5e4d26ca9ce908447f (diff)
phy: SMSC device Energy Detect power-down mode
SMSC Ethernet Transceivers (LAN88710, LAN8710, LAN8720, LAN8187, LAN8700, LAN83C185) provide a mechanism to conserve power when the device is not connected to an active link partner (Energy Detect Mode). So this patch enables the Energy Detect power-down mode for these Transceivers. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/phy/smsc.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
index 5123bb954dd..ed2644a5750 100644
--- a/drivers/net/phy/smsc.c
+++ b/drivers/net/phy/smsc.c
@@ -25,6 +25,7 @@
#define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */
#define MII_LAN83C185_IM 30 /* Interrupt Mask */
+#define MII_LAN83C185_CTRL_STATUS 17 /* Mode/Status Register */
#define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */
#define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */
@@ -37,8 +38,10 @@
#define MII_LAN83C185_ISF_INT_ALL (0x0e)
#define MII_LAN83C185_ISF_INT_PHYLIB_EVENTS \
- (MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4)
+ (MII_LAN83C185_ISF_INT6 | MII_LAN83C185_ISF_INT4 | \
+ MII_LAN83C185_ISF_INT7)
+#define MII_LAN83C185_EDPWRDOWN (1 << 13) /* EDPWRDOWN */
static int smsc_phy_config_intr(struct phy_device *phydev)
{
@@ -59,9 +62,23 @@ static int smsc_phy_ack_interrupt(struct phy_device *phydev)
static int smsc_phy_config_init(struct phy_device *phydev)
{
+ int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
+ if (rc < 0)
+ return rc;
+
+ /* Enable energy detect mode for this SMSC Transceivers */
+ rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
+ rc | MII_LAN83C185_EDPWRDOWN);
+ if (rc < 0)
+ return rc;
+
return smsc_phy_ack_interrupt (phydev);
}
+static int lan911x_config_init(struct phy_device *phydev)
+{
+ return smsc_phy_ack_interrupt(phydev);
+}
static struct phy_driver lan83c185_driver = {
.phy_id = 0x0007c0a0, /* OUI=0x00800f, Model#=0x0a */
@@ -147,7 +164,7 @@ static struct phy_driver lan911x_int_driver = {
/* basic functions */
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
- .config_init = smsc_phy_config_init,
+ .config_init = lan911x_config_init,
/* IRQ related */
.ack_interrupt = smsc_phy_ack_interrupt,