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authorHeiner Kallweit <hkallweit1@gmail.com>2019-08-09 20:43:50 +0200
committerDavid S. Miller <davem@davemloft.net>2019-08-11 21:24:32 -0700
commitf4069cd7fa6583e7094001c6fce6f426d17a4c76 (patch)
tree943918e8d6d99d2ad989d17e8ff790c668c279ac /drivers
parent3eef8689325e6358a0c51d2ef8c6a689b2f22d48 (diff)
net: phy: prepare phylib to deal with PHY's extending Clause 22
The integrated PHY in 2.5Gbps chip RTL8125 is the first (known to me) PHY that uses standard Clause 22 for all modes up to 1Gbps and adds 2.5Gbps control using vendor-specific registers. To use phylib for the standard part little extensions are needed: - Move most of genphy_config_aneg to a new function __genphy_config_aneg that takes a parameter whether restarting auto-negotiation is needed (depending on whether content of vendor-specific advertisement register changed). - Don't clear phydev->lp_advertising in genphy_read_status so that we can set non-C22 mode flags before. Basically both changes mimic the behavior of the equivalent Clause 45 functions. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/phy/phy_device.c27
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index a70a98dc9879..b039632de73a 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1671,18 +1671,20 @@ int genphy_restart_aneg(struct phy_device *phydev)
EXPORT_SYMBOL(genphy_restart_aneg);
/**
- * genphy_config_aneg - restart auto-negotiation or write BMCR
+ * __genphy_config_aneg - restart auto-negotiation or write BMCR
* @phydev: target phy_device struct
+ * @changed: whether autoneg is requested
*
* Description: If auto-negotiation is enabled, we configure the
* advertising, and then restart auto-negotiation. If it is not
* enabled, then we write the BMCR.
*/
-int genphy_config_aneg(struct phy_device *phydev)
+int __genphy_config_aneg(struct phy_device *phydev, bool changed)
{
- int err, changed;
+ int err;
- changed = genphy_config_eee_advert(phydev);
+ if (genphy_config_eee_advert(phydev))
+ changed = true;
if (AUTONEG_ENABLE != phydev->autoneg)
return genphy_setup_forced(phydev);
@@ -1690,10 +1692,10 @@ int genphy_config_aneg(struct phy_device *phydev)
err = genphy_config_advert(phydev);
if (err < 0) /* error */
return err;
+ else if (err)
+ changed = true;
- changed |= err;
-
- if (changed == 0) {
+ if (!changed) {
/* Advertisement hasn't changed, but maybe aneg was never on to
* begin with? Or maybe phy was isolated?
*/
@@ -1703,18 +1705,15 @@ int genphy_config_aneg(struct phy_device *phydev)
return ctl;
if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
- changed = 1; /* do restart aneg */
+ changed = true; /* do restart aneg */
}
/* Only restart aneg if we are advertising something different
* than we were before.
*/
- if (changed > 0)
- return genphy_restart_aneg(phydev);
-
- return 0;
+ return changed ? genphy_restart_aneg(phydev) : 0;
}
-EXPORT_SYMBOL(genphy_config_aneg);
+EXPORT_SYMBOL(__genphy_config_aneg);
/**
* genphy_aneg_done - return auto-negotiation status
@@ -1801,8 +1800,6 @@ int genphy_read_status(struct phy_device *phydev)
phydev->pause = 0;
phydev->asym_pause = 0;
- linkmode_zero(phydev->lp_advertising);
-
if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) {
if (phydev->is_gigabit_capable) {
lpagb = phy_read(phydev, MII_STAT1000);