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ar8216: Fix issue with autoneg being disabled under 3.14, revert 43332

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Patch reverts 43332 which seems to cause issues with VLAN functionality.
Add a specific check to check whether ANEG is still enabled and re-enable
it if necessary. Disable generic phy soft reset for kernel >=3.16.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>

SVN-Revision: 43356
This commit is contained in:
Felix Fietkau 2014-11-24 09:33:48 +00:00
parent a2768bd9e0
commit 35902404fc
1 changed files with 47 additions and 2 deletions
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49
target/linux/generic/files/drivers/net/phy/ar8216.c
View file

@ -36,6 +36,7 @@
#include <linux/of_device.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/version.h>
#include "ar8216.h"
@ -342,6 +343,29 @@ ar8xxx_phy_poll_reset(struct mii_bus *bus)
return -ETIMEDOUT;
}
static int
ar8xxx_phy_check_aneg(struct phy_device *phydev)
{
int ret;
if (phydev->autoneg != AUTONEG_ENABLE)
return 0;
/*
* BMCR_ANENABLE might have been cleared
* by phy_init_hw in certain kernel versions
* therefore check for it
*/
ret = phy_read(phydev, MII_BMCR);
if (ret < 0)
return ret;
if (ret & BMCR_ANENABLE)
return 0;
dev_info(&phydev->dev, "ANEG disabled, re-enabling ...\n");
ret |= BMCR_ANENABLE | BMCR_ANRESTART;
return phy_write(phydev, MII_BMCR, ret);
}
static void
ar8xxx_phy_init(struct ar8xxx_priv *priv)
{
@ -2774,7 +2798,7 @@ ar8xxx_phy_config_init(struct phy_device *phydev)
return -ENODEV;
if (chip_is_ar8327(priv) || chip_is_ar8337(priv))
return 0;
return ar8xxx_phy_check_aneg(phydev);
priv->phy = phydev;
@ -2848,6 +2872,15 @@ ar8xxx_phy_read_status(struct phy_device *phydev)
return ret;
}
static int
ar8xxx_phy_config_aneg(struct phy_device *phydev)
{
if (phydev->addr == 0)
return 0;
return genphy_config_aneg(phydev);
}
static const u32 ar8xxx_phy_ids[] = {
0x004dd033,
0x004dd034, /* AR8327 */
@ -3010,6 +3043,15 @@ ar8xxx_phy_remove(struct phy_device *phydev)
ar8xxx_free(priv);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)
static int
ar8xxx_phy_soft_reset(struct phy_device *phydev)
{
/* we don't need an extra reset */
return 0;
}
#endif
static struct phy_driver ar8xxx_phy_driver = {
.phy_id = 0x004d0000,
.name = "Atheros AR8216/AR8236/AR8316",
@ -3019,8 +3061,11 @@ static struct phy_driver ar8xxx_phy_driver = {
.remove = ar8xxx_phy_remove,
.detach = ar8xxx_phy_detach,
.config_init = ar8xxx_phy_config_init,
.config_aneg = genphy_config_aneg,
.config_aneg = ar8xxx_phy_config_aneg,
.read_status = ar8xxx_phy_read_status,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)
.soft_reset = ar8xxx_phy_soft_reset,
#endif
.driver = { .owner = THIS_MODULE },
};