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WSL2-Linux-Kernel/include/linux/of_mdio.h

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1.5 KiB
C
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openfirmware: Add OF phylib support code Add support for parsing the device tree for PHY devices on an MDIO bus. Currently many of the PowerPC ethernet drivers are open coding a solution for reading data out of the device tree to find the correct PHY device. This patch implements a set of common routines to: a) let MDIO bus drivers register phy_devices described in the tree, and b) let MAC drivers find the correct phy_device via the tree. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-25 16:52:56 +04:00
/*
* OF helpers for the MDIO (Ethernet PHY) API
*
* Copyright (c) 2009 Secret Lab Technologies, Ltd.
*
* This file is released under the GPLv2
*/
#ifndef __LINUX_OF_MDIO_H
#define __LINUX_OF_MDIO_H
#include <linux/phy.h>
#include <linux/of.h>
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
#ifdef CONFIG_OF
openfirmware: Add OF phylib support code Add support for parsing the device tree for PHY devices on an MDIO bus. Currently many of the PowerPC ethernet drivers are open coding a solution for reading data out of the device tree to find the correct PHY device. This patch implements a set of common routines to: a) let MDIO bus drivers register phy_devices described in the tree, and b) let MAC drivers find the correct phy_device via the tree. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-25 16:52:56 +04:00
extern int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np);
extern struct phy_device *of_phy_find_device(struct device_node *phy_np);
extern struct phy_device *of_phy_connect(struct net_device *dev,
struct device_node *phy_np,
void (*hndlr)(struct net_device *),
u32 flags, phy_interface_t iface);
of/mdio: Add support function for Ethernet fixed-link property Fixed-link support is broken for the ucc_eth, gianfar, and fs_enet device drivers. The "OF MDIO rework" patches removed most of the support. Instead of re-adding fixed-link stuff to the drivers, this patch adds a support function for parsing the fixed-link property and obtaining a dummy phy to match. Note: the dummy phy handling in arch/powerpc is a bit of a hack and needs to be reworked. This function is being added now to solve the regression in the Ethernet drivers, but it should be considered a temporary measure until the fixed link handling can be reworked. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-17 01:31:31 +04:00
extern struct phy_device *of_phy_connect_fixed_link(struct net_device *dev,
void (*hndlr)(struct net_device *),
phy_interface_t iface);
openfirmware: Add OF phylib support code Add support for parsing the device tree for PHY devices on an MDIO bus. Currently many of the PowerPC ethernet drivers are open coding a solution for reading data out of the device tree to find the correct PHY device. This patch implements a set of common routines to: a) let MDIO bus drivers register phy_devices described in the tree, and b) let MAC drivers find the correct phy_device via the tree. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-25 16:52:56 +04:00
netdev/of/phy: New function: of_mdio_find_bus(). Add of_mdio_find_bus() which allows an mii_bus to be located given its associated the device tree node. This is needed by the follow-on patch to add a driver for MDIO bus multiplexers. The of_mdiobus_register() function is modified so that the device tree node is recorded in the mii_bus. Then we can find it again by iterating over all mdio_bus_class devices. Because the OF device tree has now become an integral part of the kernel, this can live in mdio_bus.c (which contains the needed mdio_bus_class structure) instead of of_mdio.c. Signed-off-by: David Daney <david.daney@cavium.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-02 19:16:37 +04:00
extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
#else /* CONFIG_OF */
of/mdio: Staticise !CONFIG_OF stubs The !CONFIG_OF stubs aren't static so if multiple files include the header with this configuration then the linker will see multiple definitions of the stubs. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-09 22:33:38 +04:00
static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
{
return -ENOSYS;
}
of/mdio: Staticise !CONFIG_OF stubs The !CONFIG_OF stubs aren't static so if multiple files include the header with this configuration then the linker will see multiple definitions of the stubs. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-09 22:33:38 +04:00
static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
{
return NULL;
}
of/mdio: Staticise !CONFIG_OF stubs The !CONFIG_OF stubs aren't static so if multiple files include the header with this configuration then the linker will see multiple definitions of the stubs. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-09 22:33:38 +04:00
static inline struct phy_device *of_phy_connect(struct net_device *dev,
struct device_node *phy_np,
void (*hndlr)(struct net_device *),
u32 flags, phy_interface_t iface)
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
{
return NULL;
}
of/mdio: Staticise !CONFIG_OF stubs The !CONFIG_OF stubs aren't static so if multiple files include the header with this configuration then the linker will see multiple definitions of the stubs. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-09 22:33:38 +04:00
static inline struct phy_device *of_phy_connect_fixed_link(struct net_device *dev,
void (*hndlr)(struct net_device *),
phy_interface_t iface)
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
{
return NULL;
}
of/mdio: Staticise !CONFIG_OF stubs The !CONFIG_OF stubs aren't static so if multiple files include the header with this configuration then the linker will see multiple definitions of the stubs. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-09 22:33:38 +04:00
static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
of/mdio: Add dummy functions in of_mdio.h. This patch adds dummy functions in of_mdio.h, so that driver need not ifdef there code with CONFIG_OF. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 05:58:59 +04:00
{
return NULL;
}
#endif /* CONFIG_OF */
openfirmware: Add OF phylib support code Add support for parsing the device tree for PHY devices on an MDIO bus. Currently many of the PowerPC ethernet drivers are open coding a solution for reading data out of the device tree to find the correct PHY device. This patch implements a set of common routines to: a) let MDIO bus drivers register phy_devices described in the tree, and b) let MAC drivers find the correct phy_device via the tree. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-25 16:52:56 +04:00
#endif /* __LINUX_OF_MDIO_H */