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net: phy: make of_set_phy_supported work with genphy driver

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of_set_phy_supported allows overwiting hardware capabilities of
a phy with values from the devicetree. of_set_phy_supported is
called right after phy_device_register in the assumption that
phy_probe is called from phy_device_register and the features
of the phy are already initialized. For the genphy driver this
is not true, here phy_probe is called later during phy_connect
time. phy_probe will then overwrite all settings done from
of_set_phy_supported
Fix this by moving of_set_phy_supported to the core phy code
and calling it from phy_probe.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sascha Hauer 2014-05-21 15:29:45 +02:00 committed by David S. Miller
parent c242a47238
commit de906af1cf
2 changed files with 35 additions and 27 deletions
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36
drivers/net/phy/phy_device.c
View File

@ -33,6 +33,7 @@
#include <linux/mdio.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <linux/of.h>
#include <asm/irq.h>
@ -1166,6 +1167,38 @@ static int gen10g_resume(struct phy_device *phydev)
return 0;
}
static void of_set_phy_supported(struct phy_device *phydev)
{
struct device_node *node = phydev->dev.of_node;
u32 max_speed;
if (!IS_ENABLED(CONFIG_OF_MDIO))
return;
if (!node)
return;
if (!of_property_read_u32(node, "max-speed", &max_speed)) {
/* The default values for phydev->supported are provided by the PHY
* driver "features" member, we want to reset to sane defaults fist
* before supporting higher speeds.
*/
phydev->supported &= PHY_DEFAULT_FEATURES;
switch (max_speed) {
default:
return;
case SPEED_1000:
phydev->supported |= PHY_1000BT_FEATURES;
case SPEED_100:
phydev->supported |= PHY_100BT_FEATURES;
case SPEED_10:
phydev->supported |= PHY_10BT_FEATURES;
}
}
}
/**
* phy_probe - probe and init a PHY device
* @dev: device to probe and init
@ -1200,7 +1233,8 @@ static int phy_probe(struct device *dev)
* or both of these values
*/
phydev->supported = phydrv->features;
phydev->advertising = phydrv->features;
of_set_phy_supported(phydev);
phydev->advertising = phydev->supported;
/* Set the state to READY by default */
phydev->state = PHY_READY;

26
drivers/of/of_mdio.c
View File

@ -23,27 +23,6 @@
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
MODULE_LICENSE("GPL");
static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed)
{
/* The default values for phydev->supported are provided by the PHY
* driver "features" member, we want to reset to sane defaults fist
* before supporting higher speeds.
*/
phydev->supported &= PHY_DEFAULT_FEATURES;
switch (max_speed) {
default:
return;
case SPEED_1000:
phydev->supported |= PHY_1000BT_FEATURES;
case SPEED_100:
phydev->supported |= PHY_100BT_FEATURES;
case SPEED_10:
phydev->supported |= PHY_10BT_FEATURES;
}
}
/* Extract the clause 22 phy ID from the compatible string of the form
* ethernet-phy-idAAAA.BBBB */
static int of_get_phy_id(struct device_node *device, u32 *phy_id)
@ -104,11 +83,6 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi
return 1;
}
/* Set phydev->supported based on the "max-speed" property
* if present */
if (!of_property_read_u32(child, "max-speed", &max_speed))
of_set_phy_supported(phy, max_speed);
dev_dbg(&mdio->dev, "registered phy %s at address %i\n",
child->name, addr);