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Bikkina" , netdev@vger.kernel.org, Pankaj Bansal , linux-kernel@vger.kernel.org, Calvin Johnson , Heiner Kallweit , Diana Madalina Craciun , linux-acpi@vger.kernel.org, Makarand Pawagi , Varun Sethi , Marcin Wojtas , "David S. Miller" , linux-arm-kernel@lists.infradead.org, Laurentiu Tudor Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Define fwnode_phy_find_device() to iterate an mdiobus and find the phy device of the provided phy fwnode. Additionally define device_phy_find_device() to find phy device of provided device. Define fwnode_get_phy_node() to get phy_node using named reference. Signed-off-by: Calvin Johnson --- Changes in v2: move phy code from base/property.c to net/phy/phy_device.c replace acpi & of code to get phy-handle with fwnode_find_reference drivers/net/phy/phy_device.c | 55 ++++++++++++++++++++++++++++++++++++ include/linux/phy.h | 3 ++ 2 files changed, 58 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 7e1ddd5745d2..a2f3dbba8a3c 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -31,6 +31,7 @@ #include #include #include +#include MODULE_DESCRIPTION("PHY library"); MODULE_AUTHOR("Andy Fleming"); @@ -2436,6 +2437,60 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv) return phydrv->config_intr && phydrv->ack_interrupt; } +/** + * fwnode_phy_find_device - Find phy_device on the mdiobus for the provided + * phy_fwnode. + * @phy_fwnode: Pointer to the phy's fwnode. + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode) +{ + struct device *d; + struct mdio_device *mdiodev; + + if (!phy_fwnode) + return NULL; + + d = bus_find_device_by_fwnode(&mdio_bus_type, phy_fwnode); + if (d) { + mdiodev = to_mdio_device(d); + if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) + return to_phy_device(d); + put_device(d); + } + + return NULL; +} +EXPORT_SYMBOL(fwnode_phy_find_device); + +/** + * device_phy_find_device - For the given device, get the phy_device + * @dev: Pointer to the given device + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *device_phy_find_device(struct device *dev) +{ + return fwnode_phy_find_device(dev_fwnode(dev)); +} +EXPORT_SYMBOL_GPL(device_phy_find_device); + +/** + * fwnode_get_phy_node - Get the phy_node using the named reference. + * @fwnode: Pointer to fwnode from which phy_node has to be obtained. + * + * Returns pointer to the phy fwnode, or ERR_PTR. Caller is responsible to + * call fwnode_handle_put() on the returned phy fwnode pointer. + */ +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode) +{ + return fwnode_find_reference(fwnode, "phy-handle", 0); +} +EXPORT_SYMBOL_GPL(fwnode_get_phy_node); + /** * phy_probe - probe and init a PHY device * @dev: device to probe and init diff --git a/include/linux/phy.h b/include/linux/phy.h index e2bfb9240587..f0450ef2dc9b 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1328,6 +1328,9 @@ void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx); bool phy_validate_pause(struct phy_device *phydev, struct ethtool_pauseparam *pp); void phy_get_pause(struct phy_device *phydev, bool *tx_pause, bool *rx_pause); +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode); +struct phy_device *device_phy_find_device(struct device *dev); +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode); void phy_resolve_pause(unsigned long *local_adv, unsigned long *partner_adv, bool *tx_pause, bool *rx_pause);