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authorFlorian Fainelli <f.fainelli@gmail.com>2014-02-17 13:34:03 -0800
committerDavid S. Miller <davem@davemloft.net>2014-02-17 16:40:09 -0500
commit9df81dd7583d14862d0cfb673a941b261f3b2112 (patch)
treea790b50329b80f6a6b29f745fd2baad8b4d1944f /drivers/net/phy
parent797ac07137d9ae8572008e21e6123a9ae17dae50 (diff)
net: phy: allow PHY drivers to implement their own software reset
As pointed out by Shaohui, most 10G PHYs out there have a non-standard compliant software reset sequence, eventually something much more complex than just toggling the BMCR_RESET bit. Allow PHY driver to implement their own soft_reset() callback to deal with that. If no callback is provided, call into genphy_soft_reset() which makes sure the existing behavior is kept intact. Reported-by: Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/phy_device.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 7c21b8214bb9..a70b604ac644 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -535,12 +535,16 @@ static int phy_poll_reset(struct phy_device *phydev)
int phy_init_hw(struct phy_device *phydev)
{
- int ret;
+ int ret = 0;
if (!phydev->drv || !phydev->drv->config_init)
return 0;
- ret = genphy_soft_reset(phydev);
+ if (phydev->drv->soft_reset)
+ ret = phydev->drv->soft_reset(phydev);
+ else
+ ret = genphy_soft_reset(phydev);
+
if (ret < 0)
return ret;
@@ -1108,6 +1112,12 @@ static int genphy_config_init(struct phy_device *phydev)
return 0;
}
+static int gen10g_soft_reset(struct phy_device *phydev)
+{
+ /* Do nothing for now */
+ return 0;
+}
+
static int gen10g_config_init(struct phy_device *phydev)
{
/* Temporarily just say we support everything */
@@ -1282,6 +1292,7 @@ static struct phy_driver genphy_driver[] = {
.phy_id = 0xffffffff,
.phy_id_mask = 0xffffffff,
.name = "Generic PHY",
+ .soft_reset = genphy_soft_reset,
.config_init = genphy_config_init,
.features = 0,
.config_aneg = genphy_config_aneg,
@@ -1294,6 +1305,7 @@ static struct phy_driver genphy_driver[] = {
.phy_id = 0xffffffff,
.phy_id_mask = 0xffffffff,
.name = "Generic 10G PHY",
+ .soft_reset = gen10g_soft_reset,
.config_init = gen10g_config_init,
.features = 0,
.config_aneg = gen10g_config_aneg,