[deliverable/linux.git] / drivers / of / of_mdio.c

/*
 * OF helpers for the MDIO (Ethernet PHY) API
 *
 * Copyright (c) 2009 Secret Lab Technologies, Ltd.
 *
 * This file is released under the GPLv2
 *
 * This file provides helper functions for extracting PHY device information
 * out of the OpenFirmware device tree and using it to populate an mii_bus.
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/netdevice.h>
#include <linux/err.h>
#include <linux/phy.h>
#include <linux/phy_fixed.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_mdio.h>
#include <linux/module.h>

MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
MODULE_LICENSE("GPL");

static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed)
{
	/* The default values for phydev->supported are provided by the PHY
	 * driver "features" member, we want to reset to sane defaults fist
	 * before supporting higher speeds.
	 */
	phydev->supported &= PHY_DEFAULT_FEATURES;

	switch (max_speed) {
	default:
		return;

	case SPEED_1000:
		phydev->supported |= PHY_1000BT_FEATURES;
	case SPEED_100:
		phydev->supported |= PHY_100BT_FEATURES;
	case SPEED_10:
		phydev->supported |= PHY_10BT_FEATURES;
	}
}

/* Extract the clause 22 phy ID from the compatible string of the form
 * ethernet-phy-idAAAA.BBBB */
static int of_get_phy_id(struct device_node *device, u32 *phy_id)
{
	struct property *prop;
	const char *cp;
	unsigned int upper, lower;

	of_property_for_each_string(device, "compatible", prop, cp) {
		if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) {
			*phy_id = ((upper & 0xFFFF) << 16) | (lower & 0xFFFF);
			return 0;
		}
	}
	return -EINVAL;
}

static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *child,
				   u32 addr)
{
	struct phy_device *phy;
	bool is_c45;
	int rc;
	u32 max_speed = 0;
	u32 phy_id;

	is_c45 = of_device_is_compatible(child,
					 "ethernet-phy-ieee802.3-c45");

	if (!is_c45 && !of_get_phy_id(child, &phy_id))
		phy = phy_device_create(mdio, addr, phy_id, 0, NULL);
	else
		phy = get_phy_device(mdio, addr, is_c45);
	if (!phy || IS_ERR(phy))
		return 1;

	rc = irq_of_parse_and_map(child, 0);
	if (rc > 0) {
		phy->irq = rc;
		if (mdio->irq)
			mdio->irq[addr] = rc;
	} else {
		if (mdio->irq)
			phy->irq = mdio->irq[addr];
	}

	/* Associate the OF node with the device structure so it
	 * can be looked up later */
	of_node_get(child);
	phy->dev.of_node = child;

	/* All data is now stored in the phy struct;
	 * register it */
	rc = phy_device_register(phy);
	if (rc) {
		phy_device_free(phy);
		of_node_put(child);
		return 1;
	}

	/* Set phydev->supported based on the "max-speed" property
	 * if present */
	if (!of_property_read_u32(child, "max-speed", &max_speed))
		of_set_phy_supported(phy, max_speed);

	dev_dbg(&mdio->dev, "registered phy %s at address %i\n",
		child->name, addr);

	return 0;
}

/**
 * of_mdiobus_register - Register mii_bus and create PHYs from the device tree
 * @mdio: pointer to mii_bus structure
 * @np: pointer to device_node of MDIO bus.
 *
 * This function registers the mii_bus structure and registers a phy_device
 * for each child node of @np.
 */
int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
{
	struct device_node *child;
	const __be32 *paddr;
	u32 addr;
	bool scanphys = false;
	int rc, i, len;

	/* Mask out all PHYs from auto probing.  Instead the PHYs listed in
	 * the device tree are populated after the bus has been registered */
	mdio->phy_mask = ~0;

	/* Clear all the IRQ properties */
	if (mdio->irq)
		for (i=0; i<PHY_MAX_ADDR; i++)
			mdio->irq[i] = PHY_POLL;

	mdio->dev.of_node = np;

	/* Register the MDIO bus */
	rc = mdiobus_register(mdio);
	if (rc)
		return rc;

	/* Loop over the child nodes and register a phy_device for each one */
	for_each_available_child_of_node(np, child) {
		/* A PHY must have a reg property in the range [0-31] */
		paddr = of_get_property(child, "reg", &len);
		if (!paddr || len < sizeof(*paddr)) {
			scanphys = true;
			dev_err(&mdio->dev, "%s has invalid PHY address\n",
				child->full_name);
			continue;
		}

		addr = be32_to_cpup(paddr);
		if (addr >= PHY_MAX_ADDR) {
			dev_err(&mdio->dev, "%s PHY address %i is too large\n",
				child->full_name, addr);
			continue;
		}

		rc = of_mdiobus_register_phy(mdio, child, addr);
		if (rc)
			continue;
	}

	if (!scanphys)
		return 0;

	/* auto scan for PHYs with empty reg property */
	for_each_available_child_of_node(np, child) {
		/* Skip PHYs with reg property set */
		paddr = of_get_property(child, "reg", &len);
		if (paddr)
			continue;

		for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
			/* skip already registered PHYs */
			if (mdio->phy_map[addr])
				continue;

			/* be noisy to encourage people to set reg property */
			dev_info(&mdio->dev, "scan phy %s at address %i\n",
				 child->name, addr);

			rc = of_mdiobus_register_phy(mdio, child, addr);
			if (rc)
				continue;
		}
	}

	return 0;
}
EXPORT_SYMBOL(of_mdiobus_register);

/* Helper function for of_phy_find_device */
static int of_phy_match(struct device *dev, void *phy_np)
{
	return dev->of_node == phy_np;
}

/**
 * of_phy_find_device - Give a PHY node, find the phy_device
 * @phy_np: Pointer to the phy's device tree node
 *
 * Returns a pointer to the phy_device.
 */
struct phy_device *of_phy_find_device(struct device_node *phy_np)
{
	struct device *d;
	if (!phy_np)
		return NULL;

	d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
	return d ? to_phy_device(d) : NULL;
}
EXPORT_SYMBOL(of_phy_find_device);

/**
 * of_phy_connect - Connect to the phy described in the device tree
 * @dev: pointer to net_device claiming the phy
 * @phy_np: Pointer to device tree node for the PHY
 * @hndlr: Link state callback for the network device
 * @iface: PHY data interface type
 *
 * Returns a pointer to the phy_device if successful.  NULL otherwise
 */
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)
{
	struct phy_device *phy = of_phy_find_device(phy_np);

	if (!phy)
		return NULL;

	return phy_connect_direct(dev, phy, hndlr, iface) ? NULL : phy;
}
EXPORT_SYMBOL(of_phy_connect);

/**
 * of_phy_connect_fixed_link - Parse fixed-link property and return a dummy phy
 * @dev: pointer to net_device claiming the phy
 * @hndlr: Link state callback for the network device
 * @iface: PHY data interface type
 *
 * This function is a temporary stop-gap and will be removed soon.  It is
 * only to support the fs_enet, ucc_geth and gianfar Ethernet drivers.  Do
 * not call this function from new drivers.
 */
struct phy_device *of_phy_connect_fixed_link(struct net_device *dev,
					     void (*hndlr)(struct net_device *),
					     phy_interface_t iface)
{
	struct device_node *net_np;
	char bus_id[MII_BUS_ID_SIZE + 3];
	struct phy_device *phy;
	const __be32 *phy_id;
	int sz;

	if (!dev->dev.parent)
		return NULL;

	net_np = dev->dev.parent->of_node;
	if (!net_np)
		return NULL;

	phy_id = of_get_property(net_np, "fixed-link", &sz);
	if (!phy_id || sz < sizeof(*phy_id))
		return NULL;

	sprintf(bus_id, PHY_ID_FMT, "fixed-0", be32_to_cpu(phy_id[0]));

	phy = phy_connect(dev, bus_id, hndlr, iface);
	return IS_ERR(phy) ? NULL : phy;
}
EXPORT_SYMBOL(of_phy_connect_fixed_link);

/**
 * of_phy_attach - Attach to a PHY without starting the state machine
 * @dev: pointer to net_device claiming the phy
 * @phy_np: Node pointer for the PHY
 * @flags: flags to pass to the PHY
 * @iface: PHY data interface type
 */
struct phy_device *of_phy_attach(struct net_device *dev,
				 struct device_node *phy_np, u32 flags,
				 phy_interface_t iface)
{
	struct phy_device *phy = of_phy_find_device(phy_np);

	if (!phy)
		return NULL;

	return phy_attach_direct(dev, phy, flags, iface) ? NULL : phy;
}
EXPORT_SYMBOL(of_phy_attach);

#if defined(CONFIG_FIXED_PHY)
/*
 * of_phy_is_fixed_link() and of_phy_register_fixed_link() must
 * support two DT bindings:
 * - the old DT binding, where 'fixed-link' was a property with 5
 *   cells encoding various informations about the fixed PHY
 * - the new DT binding, where 'fixed-link' is a sub-node of the
 *   Ethernet device.
 */
bool of_phy_is_fixed_link(struct device_node *np)
{
	struct device_node *dn;
	int len;

	/* New binding */
	dn = of_get_child_by_name(np, "fixed-link");
	if (dn) {
		of_node_put(dn);
		return true;
	}

	/* Old binding */
	if (of_get_property(np, "fixed-link", &len) &&
	    len == (5 * sizeof(__be32)))
		return true;

	return false;
}
EXPORT_SYMBOL(of_phy_is_fixed_link);

int of_phy_register_fixed_link(struct device_node *np)
{
	struct fixed_phy_status status = {};
	struct device_node *fixed_link_node;
	const __be32 *fixed_link_prop;
	int len;

	/* New binding */
	fixed_link_node = of_get_child_by_name(np, "fixed-link");
	if (fixed_link_node) {
		status.link = 1;
		status.duplex = of_property_read_bool(np, "full-duplex");
		if (of_property_read_u32(fixed_link_node, "speed", &status.speed))
			return -EINVAL;
		status.pause = of_property_read_bool(np, "pause");
		status.asym_pause = of_property_read_bool(np, "asym-pause");
		of_node_put(fixed_link_node);
		return fixed_phy_register(PHY_POLL, &status, np);
	}

	/* Old binding */
	fixed_link_prop = of_get_property(np, "fixed-link", &len);
	if (fixed_link_prop && len == (5 * sizeof(__be32))) {
		status.link = 1;
		status.duplex = be32_to_cpu(fixed_link_prop[1]);
		status.speed = be32_to_cpu(fixed_link_prop[2]);
		status.pause = be32_to_cpu(fixed_link_prop[3]);
		status.asym_pause = be32_to_cpu(fixed_link_prop[4]);
		return fixed_phy_register(PHY_POLL, &status, np);
	}

	return -ENODEV;
}
EXPORT_SYMBOL(of_phy_register_fixed_link);
#endif
Commit	Line	Data
8bc487d1 GL	1	/*
	2	* OF helpers for the MDIO (Ethernet PHY) API
	3	*
	4	* Copyright (c) 2009 Secret Lab Technologies, Ltd.
	5	*
	6	* This file is released under the GPLv2
	7	*
	8	* This file provides helper functions for extracting PHY device information
	9	* out of the OpenFirmware device tree and using it to populate an mii_bus.
	10	*/
	11
24c30dbb AV	12	#include <linux/kernel.h>
	13	#include <linux/device.h>
	14	#include <linux/netdevice.h>
	15	#include <linux/err.h>
8bc487d1	16	#include <linux/phy.h>
3be2a49e	17	#include <linux/phy_fixed.h>
8bc487d1	18	#include <linux/of.h>
e3873444	19	#include <linux/of_irq.h>
8bc487d1 GL	20	#include <linux/of_mdio.h>
	21	#include <linux/module.h>
	22
	23	MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
	24	MODULE_LICENSE("GPL");
	25
8fdade4b FF	26	static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed)
8fdade4b FF	27	{
ce11c436 FF	28	/* The default values for phydev->supported are provided by the PHY
	29	* driver "features" member, we want to reset to sane defaults fist
	30	* before supporting higher speeds.
	31	*/
	32	phydev->supported &= PHY_DEFAULT_FEATURES;
8fdade4b FF	33
	34	switch (max_speed) {
	35	default:
	36	return;
	37
	38	case SPEED_1000:
	39	phydev->supported \|= PHY_1000BT_FEATURES;
	40	case SPEED_100:
	41	phydev->supported \|= PHY_100BT_FEATURES;
	42	case SPEED_10:
	43	phydev->supported \|= PHY_10BT_FEATURES;
	44	}
	45	}
	46
3c6f5592 JG	47	/* Extract the clause 22 phy ID from the compatible string of the form
	48	* ethernet-phy-idAAAA.BBBB */
	49	static int of_get_phy_id(struct device_node device, u32 phy_id)
	50	{
	51	struct property *prop;
	52	const char *cp;
	53	unsigned int upper, lower;
	54
	55	of_property_for_each_string(device, "compatible", prop, cp) {
	56	if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) {
	57	*phy_id = ((upper & 0xFFFF) << 16) \| (lower & 0xFFFF);
	58	return 0;
	59	}
	60	}
	61	return -EINVAL;
	62	}
	63
2e79cb30 FF	64	static int of_mdiobus_register_phy(struct mii_bus mdio, struct device_node child,
	65	u32 addr)
	66	{
	67	struct phy_device *phy;
	68	bool is_c45;
f15c586d	69	int rc;
8fdade4b	70	u32 max_speed = 0;
3c6f5592	71	u32 phy_id;
2e79cb30 FF	72
	73	is_c45 = of_device_is_compatible(child,
	74	"ethernet-phy-ieee802.3-c45");
	75
3c6f5592 JG	76	if (!is_c45 && !of_get_phy_id(child, &phy_id))
	77	phy = phy_device_create(mdio, addr, phy_id, 0, NULL);
	78	else
	79	phy = get_phy_device(mdio, addr, is_c45);
2e79cb30 FF	80	if (!phy \|\| IS_ERR(phy))
	81	return 1;
	82
f15c586d BD	83	rc = irq_of_parse_and_map(child, 0);
	84	if (rc > 0) {
	85	phy->irq = rc;
	86	if (mdio->irq)
	87	mdio->irq[addr] = rc;
	88	} else {
	89	if (mdio->irq)
	90	phy->irq = mdio->irq[addr];
2e79cb30 FF	91	}
	92
	93	/* Associate the OF node with the device structure so it
	94	* can be looked up later */
	95	of_node_get(child);
	96	phy->dev.of_node = child;
	97
	98	/* All data is now stored in the phy struct;
	99	* register it */
	100	rc = phy_device_register(phy);
	101	if (rc) {
	102	phy_device_free(phy);
	103	of_node_put(child);
	104	return 1;
	105	}
	106
8fdade4b FF	107	/* Set phydev->supported based on the "max-speed" property
	108	* if present */
	109	if (!of_property_read_u32(child, "max-speed", &max_speed))
	110	of_set_phy_supported(phy, max_speed);
	111
2e79cb30	112	dev_dbg(&mdio->dev, "registered phy %s at address %i\n",
8fdade4b	113	child->name, addr);
2e79cb30 FF	114
	115	return 0;
	116	}
	117
8bc487d1 GL	118	/**
	119	* of_mdiobus_register - Register mii_bus and create PHYs from the device tree
	120	* @mdio: pointer to mii_bus structure
	121	* @np: pointer to device_node of MDIO bus.
	122	*
	123	* This function registers the mii_bus structure and registers a phy_device
	124	* for each child node of @np.
	125	*/
	126	int of_mdiobus_register(struct mii_bus mdio, struct device_node np)
	127	{
8bc487d1	128	struct device_node *child;
779d835e SH	129	const __be32 *paddr;
779d835e SH	130	u32 addr;
2e79cb30	131	bool scanphys = false;
779d835e	132	int rc, i, len;
8bc487d1 GL	133
	134	/* Mask out all PHYs from auto probing. Instead the PHYs listed in
	135	* the device tree are populated after the bus has been registered */
	136	mdio->phy_mask = ~0;
	137
	138	/* Clear all the IRQ properties */
	139	if (mdio->irq)
	140	for (i=0; i<PHY_MAX_ADDR; i++)
	141	mdio->irq[i] = PHY_POLL;
	142
25106022 DD	143	mdio->dev.of_node = np;
25106022 DD	144
8bc487d1 GL	145	/* Register the MDIO bus */
	146	rc = mdiobus_register(mdio);
	147	if (rc)
	148	return rc;
	149
	150	/* Loop over the child nodes and register a phy_device for each one */
e207e761	151	for_each_available_child_of_node(np, child) {
8bc487d1	152	/* A PHY must have a reg property in the range [0-31] */
19458860 DD	153	paddr = of_get_property(child, "reg", &len);
19458860 DD	154	if (!paddr \|\| len < sizeof(*paddr)) {
779d835e	155	scanphys = true;
8bc487d1 GL	156	dev_err(&mdio->dev, "%s has invalid PHY address\n",
	157	child->full_name);
	158	continue;
	159	}
	160
19458860	161	addr = be32_to_cpup(paddr);
bed2f9ed	162	if (addr >= PHY_MAX_ADDR) {
19458860 DD	163	dev_err(&mdio->dev, "%s PHY address %i is too large\n",
	164	child->full_name, addr);
	165	continue;
	166	}
	167
2e79cb30 FF	168	rc = of_mdiobus_register_phy(mdio, child, addr);
2e79cb30 FF	169	if (rc)
8bc487d1	170	continue;
8bc487d1 GL	171	}
8bc487d1 GL	172
779d835e SH	173	if (!scanphys)
	174	return 0;
	175
	176	/* auto scan for PHYs with empty reg property */
	177	for_each_available_child_of_node(np, child) {
	178	/* Skip PHYs with reg property set */
	179	paddr = of_get_property(child, "reg", &len);
	180	if (paddr)
	181	continue;
	182
779d835e SH	183	for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
	184	/* skip already registered PHYs */
	185	if (mdio->phy_map[addr])
	186	continue;
	187
	188	/* be noisy to encourage people to set reg property */
	189	dev_info(&mdio->dev, "scan phy %s at address %i\n",
	190	child->name, addr);
	191
2e79cb30 FF	192	rc = of_mdiobus_register_phy(mdio, child, addr);
2e79cb30 FF	193	if (rc)
779d835e	194	continue;
779d835e SH	195	}
	196	}
	197
8bc487d1 GL	198	return 0;
	199	}
	200	EXPORT_SYMBOL(of_mdiobus_register);
	201
08a7963a JP	202	/* Helper function for of_phy_find_device */
	203	static int of_phy_match(struct device dev, void phy_np)
	204	{
61c7a080	205	return dev->of_node == phy_np;
08a7963a JP	206	}
08a7963a JP	207
8bc487d1 GL	208	/**
	209	* of_phy_find_device - Give a PHY node, find the phy_device
	210	* @phy_np: Pointer to the phy's device tree node
	211	*
	212	* Returns a pointer to the phy_device.
	213	*/
	214	struct phy_device of_phy_find_device(struct device_node phy_np)
	215	{
	216	struct device *d;
8bc487d1 GL	217	if (!phy_np)
	218	return NULL;
	219
08a7963a	220	d = bus_find_device(&mdio_bus_type, NULL, phy_np, of_phy_match);
8bc487d1 GL	221	return d ? to_phy_device(d) : NULL;
	222	}
	223	EXPORT_SYMBOL(of_phy_find_device);
	224
	225	/**
	226	* of_phy_connect - Connect to the phy described in the device tree
	227	* @dev: pointer to net_device claiming the phy
	228	* @phy_np: Pointer to device tree node for the PHY
	229	* @hndlr: Link state callback for the network device
	230	* @iface: PHY data interface type
	231	*
25985edc	232	* Returns a pointer to the phy_device if successful. NULL otherwise
8bc487d1 GL	233	*/
	234	struct phy_device of_phy_connect(struct net_device dev,
	235	struct device_node *phy_np,
	236	void (hndlr)(struct net_device ), u32 flags,
	237	phy_interface_t iface)
	238	{
	239	struct phy_device *phy = of_phy_find_device(phy_np);
	240
	241	if (!phy)
	242	return NULL;
	243
f9a8f83b	244	return phy_connect_direct(dev, phy, hndlr, iface) ? NULL : phy;
8bc487d1 GL	245	}
8bc487d1 GL	246	EXPORT_SYMBOL(of_phy_connect);
24c30dbb AV	247
	248	/**
	249	* of_phy_connect_fixed_link - Parse fixed-link property and return a dummy phy
	250	* @dev: pointer to net_device claiming the phy
	251	* @hndlr: Link state callback for the network device
	252	* @iface: PHY data interface type
	253	*
	254	* This function is a temporary stop-gap and will be removed soon. It is
	255	* only to support the fs_enet, ucc_geth and gianfar Ethernet drivers. Do
	256	* not call this function from new drivers.
	257	*/
	258	struct phy_device of_phy_connect_fixed_link(struct net_device dev,
	259	void (hndlr)(struct net_device ),
	260	phy_interface_t iface)
	261	{
	262	struct device_node *net_np;
	263	char bus_id[MII_BUS_ID_SIZE + 3];
	264	struct phy_device *phy;
33714881	265	const __be32 *phy_id;
24c30dbb AV	266	int sz;
	267
	268	if (!dev->dev.parent)
	269	return NULL;
	270
61c7a080	271	net_np = dev->dev.parent->of_node;
24c30dbb AV	272	if (!net_np)
	273	return NULL;
	274
	275	phy_id = of_get_property(net_np, "fixed-link", &sz);
	276	if (!phy_id \|\| sz < sizeof(*phy_id))
	277	return NULL;
	278
e5c7d1f6	279	sprintf(bus_id, PHY_ID_FMT, "fixed-0", be32_to_cpu(phy_id[0]));
24c30dbb	280
f9a8f83b	281	phy = phy_connect(dev, bus_id, hndlr, iface);
24c30dbb AV	282	return IS_ERR(phy) ? NULL : phy;
	283	}
	284	EXPORT_SYMBOL(of_phy_connect_fixed_link);
7614aba6 AF	285
	286	/**
	287	* of_phy_attach - Attach to a PHY without starting the state machine
	288	* @dev: pointer to net_device claiming the phy
	289	* @phy_np: Node pointer for the PHY
	290	* @flags: flags to pass to the PHY
	291	* @iface: PHY data interface type
	292	*/
	293	struct phy_device of_phy_attach(struct net_device dev,
	294	struct device_node *phy_np, u32 flags,
	295	phy_interface_t iface)
	296	{
	297	struct phy_device *phy = of_phy_find_device(phy_np);
	298
	299	if (!phy)
	300	return NULL;
	301
	302	return phy_attach_direct(dev, phy, flags, iface) ? NULL : phy;
	303	}
	304	EXPORT_SYMBOL(of_phy_attach);
3be2a49e TP	305
	306	#if defined(CONFIG_FIXED_PHY)
	307	/*
	308	* of_phy_is_fixed_link() and of_phy_register_fixed_link() must
	309	* support two DT bindings:
	310	* - the old DT binding, where 'fixed-link' was a property with 5
	311	* cells encoding various informations about the fixed PHY
	312	* - the new DT binding, where 'fixed-link' is a sub-node of the
	313	* Ethernet device.
	314	*/
	315	bool of_phy_is_fixed_link(struct device_node *np)
	316	{
	317	struct device_node *dn;
	318	int len;
	319
	320	/* New binding */
	321	dn = of_get_child_by_name(np, "fixed-link");
	322	if (dn) {
	323	of_node_put(dn);
	324	return true;
	325	}
	326
	327	/* Old binding */
	328	if (of_get_property(np, "fixed-link", &len) &&
	329	len == (5 * sizeof(__be32)))
	330	return true;
	331
	332	return false;
	333	}
	334	EXPORT_SYMBOL(of_phy_is_fixed_link);
	335
	336	int of_phy_register_fixed_link(struct device_node *np)
	337	{
	338	struct fixed_phy_status status = {};
	339	struct device_node *fixed_link_node;
	340	const __be32 *fixed_link_prop;
	341	int len;
	342
	343	/* New binding */
	344	fixed_link_node = of_get_child_by_name(np, "fixed-link");
	345	if (fixed_link_node) {
	346	status.link = 1;
	347	status.duplex = of_property_read_bool(np, "full-duplex");
	348	if (of_property_read_u32(fixed_link_node, "speed", &status.speed))
	349	return -EINVAL;
	350	status.pause = of_property_read_bool(np, "pause");
	351	status.asym_pause = of_property_read_bool(np, "asym-pause");
	352	of_node_put(fixed_link_node);
	353	return fixed_phy_register(PHY_POLL, &status, np);
	354	}
	355
	356	/* Old binding */
	357	fixed_link_prop = of_get_property(np, "fixed-link", &len);
	358	if (fixed_link_prop && len == (5 * sizeof(__be32))) {
	359	status.link = 1;
	360	status.duplex = be32_to_cpu(fixed_link_prop[1]);
	361	status.speed = be32_to_cpu(fixed_link_prop[2]);
	362	status.pause = be32_to_cpu(fixed_link_prop[3]);
	363	status.asym_pause = be32_to_cpu(fixed_link_prop[4]);
	364	return fixed_phy_register(PHY_POLL, &status, np);
	365	}
	366
	367	return -ENODEV;
	368	}
369	EXPORT_SYMBOL(of_phy_register_fixed_link);
370	#endif