net: Allow FIXED_PHY to be modular.

Otherwise we get things like:

warning: (NET_DSA_BCM_SF2 && BCMGENET && SYSTEMPORT) selects FIXED_PHY which has unmet direct dependencies (NETDEVICES && PHYLIB=y)

In order to make this work we have to rename fixed.c to fixed_phy.c
because the regulator drivers already have a module named "fixed.o".

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 337 deletions

diff --git a/drivers/net/phy/fixed.c b/drivers/net/phy/fixed.c
deleted file mode 100644
index 3ad0e6e16c39..000000000000
--- a/drivers/net/phy/fixed.c
+++ /dev/null
@@ -1,337 +0,0 @@
-/*
- * Fixed MDIO bus (MDIO bus emulation with fixed PHYs)
- *
- * Author: Vitaly Bordug <vbordug@ru.mvista.com>
- *         Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * Copyright (c) 2006-2007 MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/list.h>
-#include <linux/mii.h>
-#include <linux/phy.h>
-#include <linux/phy_fixed.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-
-#define MII_REGS_NUM 29
-
-struct fixed_mdio_bus {
-	int irqs[PHY_MAX_ADDR];
-	struct mii_bus *mii_bus;
-	struct list_head phys;
-};
-
-struct fixed_phy {
-	int addr;
-	u16 regs[MII_REGS_NUM];
-	struct phy_device *phydev;
-	struct fixed_phy_status status;
-	int (*link_update)(struct net_device *, struct fixed_phy_status *);
-	struct list_head node;
-};
-
-static struct platform_device *pdev;
-static struct fixed_mdio_bus platform_fmb = {
-	.phys = LIST_HEAD_INIT(platform_fmb.phys),
-};
-
-static int fixed_phy_update_regs(struct fixed_phy *fp)
-{
-	u16 bmsr = BMSR_ANEGCAPABLE;
-	u16 bmcr = 0;
-	u16 lpagb = 0;
-	u16 lpa = 0;
-
-	if (fp->status.duplex) {
-		bmcr |= BMCR_FULLDPLX;
-
-		switch (fp->status.speed) {
-		case 1000:
-			bmsr |= BMSR_ESTATEN;
-			bmcr |= BMCR_SPEED1000;
-			lpagb |= LPA_1000FULL;
-			break;
-		case 100:
-			bmsr |= BMSR_100FULL;
-			bmcr |= BMCR_SPEED100;
-			lpa |= LPA_100FULL;
-			break;
-		case 10:
-			bmsr |= BMSR_10FULL;
-			lpa |= LPA_10FULL;
-			break;
-		default:
-			pr_warn("fixed phy: unknown speed\n");
-			return -EINVAL;
-		}
-	} else {
-		switch (fp->status.speed) {
-		case 1000:
-			bmsr |= BMSR_ESTATEN;
-			bmcr |= BMCR_SPEED1000;
-			lpagb |= LPA_1000HALF;
-			break;
-		case 100:
-			bmsr |= BMSR_100HALF;
-			bmcr |= BMCR_SPEED100;
-			lpa |= LPA_100HALF;
-			break;
-		case 10:
-			bmsr |= BMSR_10HALF;
-			lpa |= LPA_10HALF;
-			break;
-		default:
-			pr_warn("fixed phy: unknown speed\n");
-			return -EINVAL;
-		}
-	}
-
-	if (fp->status.link)
-		bmsr |= BMSR_LSTATUS | BMSR_ANEGCOMPLETE;
-
-	if (fp->status.pause)
-		lpa |= LPA_PAUSE_CAP;
-
-	if (fp->status.asym_pause)
-		lpa |= LPA_PAUSE_ASYM;
-
-	fp->regs[MII_PHYSID1] = 0;
-	fp->regs[MII_PHYSID2] = 0;
-
-	fp->regs[MII_BMSR] = bmsr;
-	fp->regs[MII_BMCR] = bmcr;
-	fp->regs[MII_LPA] = lpa;
-	fp->regs[MII_STAT1000] = lpagb;
-
-	return 0;
-}
-
-static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num)
-{
-	struct fixed_mdio_bus *fmb = bus->priv;
-	struct fixed_phy *fp;
-
-	if (reg_num >= MII_REGS_NUM)
-		return -1;
-
-	/* We do not support emulating Clause 45 over Clause 22 register reads
-	 * return an error instead of bogus data.
-	 */
-	switch (reg_num) {
-	case MII_MMD_CTRL:
-	case MII_MMD_DATA:
-		return -1;
-	default:
-		break;
-	}
-
-	list_for_each_entry(fp, &fmb->phys, node) {
-		if (fp->addr == phy_addr) {
-			/* Issue callback if user registered it. */
-			if (fp->link_update) {
-				fp->link_update(fp->phydev->attached_dev,
-						&fp->status);
-				fixed_phy_update_regs(fp);
-			}
-			return fp->regs[reg_num];
-		}
-	}
-
-	return 0xFFFF;
-}
-
-static int fixed_mdio_write(struct mii_bus *bus, int phy_addr, int reg_num,
-			    u16 val)
-{
-	return 0;
-}
-
-/*
- * If something weird is required to be done with link/speed,
- * network driver is able to assign a function to implement this.
- * May be useful for PHY's that need to be software-driven.
- */
-int fixed_phy_set_link_update(struct phy_device *phydev,
-			      int (*link_update)(struct net_device *,
-						 struct fixed_phy_status *))
-{
-	struct fixed_mdio_bus *fmb = &platform_fmb;
-	struct fixed_phy *fp;
-
-	if (!link_update || !phydev || !phydev->bus)
-		return -EINVAL;
-
-	list_for_each_entry(fp, &fmb->phys, node) {
-		if (fp->addr == phydev->addr) {
-			fp->link_update = link_update;
-			fp->phydev = phydev;
-			return 0;
-		}
-	}
-
-	return -ENOENT;
-}
-EXPORT_SYMBOL_GPL(fixed_phy_set_link_update);
-
-int fixed_phy_add(unsigned int irq, int phy_addr,
-		  struct fixed_phy_status *status)
-{
-	int ret;
-	struct fixed_mdio_bus *fmb = &platform_fmb;
-	struct fixed_phy *fp;
-
-	fp = kzalloc(sizeof(*fp), GFP_KERNEL);
-	if (!fp)
-		return -ENOMEM;
-
-	memset(fp->regs, 0xFF,  sizeof(fp->regs[0]) * MII_REGS_NUM);
-
-	fmb->irqs[phy_addr] = irq;
-
-	fp->addr = phy_addr;
-	fp->status = *status;
-
-	ret = fixed_phy_update_regs(fp);
-	if (ret)
-		goto err_regs;
-
-	list_add_tail(&fp->node, &fmb->phys);
-
-	return 0;
-
-err_regs:
-	kfree(fp);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(fixed_phy_add);
-
-void fixed_phy_del(int phy_addr)
-{
-	struct fixed_mdio_bus *fmb = &platform_fmb;
-	struct fixed_phy *fp, *tmp;
-
-	list_for_each_entry_safe(fp, tmp, &fmb->phys, node) {
-		if (fp->addr == phy_addr) {
-			list_del(&fp->node);
-			kfree(fp);
-			return;
-		}
-	}
-}
-EXPORT_SYMBOL_GPL(fixed_phy_del);
-
-static int phy_fixed_addr;
-static DEFINE_SPINLOCK(phy_fixed_addr_lock);
-
-struct phy_device *fixed_phy_register(unsigned int irq,
-				      struct fixed_phy_status *status,
-				      struct device_node *np)
-{
-	struct fixed_mdio_bus *fmb = &platform_fmb;
-	struct phy_device *phy;
-	int phy_addr;
-	int ret;
-
-	/* Get the next available PHY address, up to PHY_MAX_ADDR */
-	spin_lock(&phy_fixed_addr_lock);
-	if (phy_fixed_addr == PHY_MAX_ADDR) {
-		spin_unlock(&phy_fixed_addr_lock);
-		return ERR_PTR(-ENOSPC);
-	}
-	phy_addr = phy_fixed_addr++;
-	spin_unlock(&phy_fixed_addr_lock);
-
-	ret = fixed_phy_add(PHY_POLL, phy_addr, status);
-	if (ret < 0)
-		return ERR_PTR(ret);
-
-	phy = get_phy_device(fmb->mii_bus, phy_addr, false);
-	if (!phy || IS_ERR(phy)) {
-		fixed_phy_del(phy_addr);
-		return ERR_PTR(-EINVAL);
-	}
-
-	of_node_get(np);
-	phy->dev.of_node = np;
-
-	ret = phy_device_register(phy);
-	if (ret) {
-		phy_device_free(phy);
-		of_node_put(np);
-		fixed_phy_del(phy_addr);
-		return ERR_PTR(ret);
-	}
-
-	return phy;
-}
-EXPORT_SYMBOL_GPL(fixed_phy_register);
-
-static int __init fixed_mdio_bus_init(void)
-{
-	struct fixed_mdio_bus *fmb = &platform_fmb;
-	int ret;
-
-	pdev = platform_device_register_simple("Fixed MDIO bus", 0, NULL, 0);
-	if (IS_ERR(pdev)) {
-		ret = PTR_ERR(pdev);
-		goto err_pdev;
-	}
-
-	fmb->mii_bus = mdiobus_alloc();
-	if (fmb->mii_bus == NULL) {
-		ret = -ENOMEM;
-		goto err_mdiobus_reg;
-	}
-
-	snprintf(fmb->mii_bus->id, MII_BUS_ID_SIZE, "fixed-0");
-	fmb->mii_bus->name = "Fixed MDIO Bus";
-	fmb->mii_bus->priv = fmb;
-	fmb->mii_bus->parent = &pdev->dev;
-	fmb->mii_bus->read = &fixed_mdio_read;
-	fmb->mii_bus->write = &fixed_mdio_write;
-	fmb->mii_bus->irq = fmb->irqs;
-
-	ret = mdiobus_register(fmb->mii_bus);
-	if (ret)
-		goto err_mdiobus_alloc;
-
-	return 0;
-
-err_mdiobus_alloc:
-	mdiobus_free(fmb->mii_bus);
-err_mdiobus_reg:
-	platform_device_unregister(pdev);
-err_pdev:
-	return ret;
-}
-module_init(fixed_mdio_bus_init);
-
-static void __exit fixed_mdio_bus_exit(void)
-{
-	struct fixed_mdio_bus *fmb = &platform_fmb;
-	struct fixed_phy *fp, *tmp;
-
-	mdiobus_unregister(fmb->mii_bus);
-	mdiobus_free(fmb->mii_bus);
-	platform_device_unregister(pdev);
-
-	list_for_each_entry_safe(fp, tmp, &fmb->phys, node) {
-		list_del(&fp->node);
-		kfree(fp);
-	}
-}
-module_exit(fixed_mdio_bus_exit);
-
-MODULE_DESCRIPTION("Fixed MDIO bus (MDIO bus emulation with fixed PHYs)");
-MODULE_AUTHOR("Vitaly Bordug");
-MODULE_LICENSE("GPL");