diff options
| author |   Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-12-14 15:17:05 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-12-17 11:24:32 -0800 |
| commit | b3e5464e36c07dba70b544044a297d5819351765 (patch) | |
| tree | ed694951dab275d9335067ea3e0cc64e2100fb78 /drivers | |
| parent | net/mlx4_en: remove fallback after kzalloc_node() (diff) | |
| download | linux-dev-b3e5464e36c07dba70b544044a297d5819351765.tar.xz linux-dev-b3e5464e36c07dba70b544044a297d5819351765.zip | |
Fixed PHY: Add fixed_phy_change_carrier()
Drivers can use this as .ndo_change_carrier() to change carrier
via /sys/class/net/ethX/carrier.
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/fixed_phy.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c index f7fb62712cd8..72d43c88e6ff 100644 --- a/drivers/net/phy/fixed_phy.c +++ b/drivers/net/phy/fixed_phy.c @@ -25,6 +25,7 @@ #include <linux/gpio.h> #include <linux/seqlock.h> #include <linux/idr.h> +#include <linux/netdevice.h> #include "swphy.h" @@ -38,6 +39,7 @@ struct fixed_phy { struct phy_device *phydev; seqcount_t seqcount; struct fixed_phy_status status; + bool no_carrier; int (*link_update)(struct net_device *, struct fixed_phy_status *); struct list_head node; int link_gpio; @@ -48,9 +50,28 @@ static struct fixed_mdio_bus platform_fmb = { .phys = LIST_HEAD_INIT(platform_fmb.phys), }; +int fixed_phy_change_carrier(struct net_device *dev, bool new_carrier) +{ + struct fixed_mdio_bus *fmb = &platform_fmb; + struct phy_device *phydev = dev->phydev; + struct fixed_phy *fp; + + if (!phydev || !phydev->mdio.bus) + return -EINVAL; + + list_for_each_entry(fp, &fmb->phys, node) { + if (fp->addr == phydev->mdio.addr) { + fp->no_carrier = !new_carrier; + return 0; + } + } + return -EINVAL; +} +EXPORT_SYMBOL_GPL(fixed_phy_change_carrier); + static void fixed_phy_update(struct fixed_phy *fp) { - if (gpio_is_valid(fp->link_gpio)) + if (!fp->no_carrier && gpio_is_valid(fp->link_gpio)) fp->status.link = !!gpio_get_value_cansleep(fp->link_gpio); } @@ -66,6 +87,7 @@ static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num) do { s = read_seqcount_begin(&fp->seqcount); + fp->status.link = !fp->no_carrier; /* Issue callback if user registered it. */ if (fp->link_update) { fp->link_update(fp->phydev->attached_dev, |