diff options
| author | Giuseppe Cavallaro <peppe.cavallaro@st.com> | 2010-01-06 20:35:14 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-01-06 20:35:14 -0800 |
| commit | 698244ace8b63896565022143ab19f141bc48993 (patch) | |
| tree | 34996baa2d5b64c75f7508211a04f4642b095baa /drivers | |
| parent | 635267130855e91f4681df5e4d26ca9ce908447f (diff) | |
| download | lwn-698244ace8b63896565022143ab19f141bc48993.tar.gz lwn-698244ace8b63896565022143ab19f141bc48993.zip | |
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.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c index 5123bb954dd7..ed2644a57500 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, |