diff options
| author | Calvin Johnson <calvin.johnson@oss.nxp.com> | 2021-06-11 13:53:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-11 23:08:53 +0300 |
| commit | 25396f680dd6257096c5dc6ceb90ce57caba8de1 (patch) | |
| tree | 514a6a17d44a4df00164c47bb30f8ce0aca3a81b /drivers/net/phy | |
| parent | 15e7064e8793352a44f65f3c18a4d84a625d95c2 (diff) | |
| download | linux-25396f680dd6257096c5dc6ceb90ce57caba8de1.tar.xz | |
net: phylink: introduce phylink_fwnode_phy_connect()
Define phylink_fwnode_phy_connect() to connect phy specified by
a fwnode to a phylink instance.
Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Grant Likely <grant.likely@arm.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/phylink.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 96d8e88b4e46..9cc0f69faafe 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -5,6 +5,7 @@ * * Copyright (C) 2015 Russell King */ +#include <linux/acpi.h> #include <linux/ethtool.h> #include <linux/export.h> #include <linux/gpio/consumer.h> @@ -1126,6 +1127,59 @@ int phylink_of_phy_connect(struct phylink *pl, struct device_node *dn, EXPORT_SYMBOL_GPL(phylink_of_phy_connect); /** + * phylink_fwnode_phy_connect() - connect the PHY specified in the fwnode. + * @pl: a pointer to a &struct phylink returned from phylink_create() + * @fwnode: a pointer to a &struct fwnode_handle. + * @flags: PHY-specific flags to communicate to the PHY device driver + * + * Connect the phy specified @fwnode to the phylink instance specified + * by @pl. + * + * Returns 0 on success or a negative errno. + */ +int phylink_fwnode_phy_connect(struct phylink *pl, + struct fwnode_handle *fwnode, + u32 flags) +{ + struct fwnode_handle *phy_fwnode; + struct phy_device *phy_dev; + int ret; + + /* Fixed links and 802.3z are handled without needing a PHY */ + if (pl->cfg_link_an_mode == MLO_AN_FIXED || + (pl->cfg_link_an_mode == MLO_AN_INBAND && + phy_interface_mode_is_8023z(pl->link_interface))) + return 0; + + phy_fwnode = fwnode_get_phy_node(fwnode); + if (IS_ERR(phy_fwnode)) { + if (pl->cfg_link_an_mode == MLO_AN_PHY) + return -ENODEV; + return 0; + } + + phy_dev = fwnode_phy_find_device(phy_fwnode); + /* We're done with the phy_node handle */ + fwnode_handle_put(phy_fwnode); + if (!phy_dev) + return -ENODEV; + + ret = phy_attach_direct(pl->netdev, phy_dev, flags, + pl->link_interface); + if (ret) { + phy_device_free(phy_dev); + return ret; + } + + ret = phylink_bringup_phy(pl, phy_dev, pl->link_config.interface); + if (ret) + phy_detach(phy_dev); + + return ret; +} +EXPORT_SYMBOL_GPL(phylink_fwnode_phy_connect); + +/** * phylink_disconnect_phy() - disconnect any PHY attached to the phylink * instance. * @pl: a pointer to a &struct phylink returned from phylink_create() |