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Release 4.11 drivers/net/ethernet/freescale/fec_mpc52xx_phy.c

/*
 * Driver for the MPC5200 Fast Ethernet Controller - MDIO bus driver
 *
 * Copyright (C) 2007  Domen Puncer, Telargo, Inc.
 * Copyright (C) 2008  Wolfram Sang, Pengutronix
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/phy.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <linux/of_mdio.h>
#include <asm/io.h>
#include <asm/mpc52xx.h>
#include "fec_mpc52xx.h"


struct mpc52xx_fec_mdio_priv {
	
struct mpc52xx_fec __iomem *regs;
};


static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id, int reg, u32 value) { struct mpc52xx_fec_mdio_priv *priv = bus->priv; struct mpc52xx_fec __iomem *fec = priv->regs; int tries = 3; value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK; value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK; out_be32(&fec->ievent, FEC_IEVENT_MII); out_be32(&fec->mii_data, value); /* wait for it to finish, this takes about 23 us on lite5200b */ while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries) msleep(1); if (!tries) return -ETIMEDOUT; return value & FEC_MII_DATA_OP_RD ? in_be32(&fec->mii_data) & FEC_MII_DATA_DATAMSK : 0; }

Contributors

PersonTokensPropCommitsCommitProp
Domen Puncer9973.88%125.00%
Wolfram Sang3223.88%250.00%
Grant C. Likely32.24%125.00%
Total134100.00%4100.00%


static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg) { return mpc52xx_fec_mdio_transfer(bus, phy_id, reg, FEC_MII_READ_FRAME); }

Contributors

PersonTokensPropCommitsCommitProp
Wolfram Sang2793.10%150.00%
Domen Puncer26.90%150.00%
Total29100.00%2100.00%


static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 data) { return mpc52xx_fec_mdio_transfer(bus, phy_id, reg, data | FEC_MII_WRITE_FRAME); }

Contributors

PersonTokensPropCommitsCommitProp
Domen Puncer2779.41%150.00%
Wolfram Sang720.59%150.00%
Total34100.00%2100.00%


static int mpc52xx_fec_mdio_probe(struct platform_device *of) { struct device *dev = &of->dev; struct device_node *np = of->dev.of_node; struct mii_bus *bus; struct mpc52xx_fec_mdio_priv *priv; struct resource res; int err; bus = mdiobus_alloc(); if (bus == NULL) return -ENOMEM; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (priv == NULL) { err = -ENOMEM; goto out_free; } bus->name = "mpc52xx MII bus"; bus->read = mpc52xx_fec_mdio_read; bus->write = mpc52xx_fec_mdio_write; /* setup registers */ err = of_address_to_resource(np, 0, &res); if (err) goto out_free; priv->regs = ioremap(res.start, resource_size(&res)); if (priv->regs == NULL) { err = -ENOMEM; goto out_free; } snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start); bus->priv = priv; bus->parent = dev; dev_set_drvdata(dev, bus); /* set MII speed */ out_be32(&priv->regs->mii_speed, ((mpc5xxx_get_bus_frequency(of->dev.of_node) >> 20) / 5) << 1); err = of_mdiobus_register(bus, np); if (err) goto out_unmap; return 0; out_unmap: iounmap(priv->regs); out_free: kfree(priv); mdiobus_free(bus); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Domen Puncer24690.11%111.11%
Grant C. Likely103.66%333.33%
Andy Fleming82.93%111.11%
Wolfram Sang41.47%111.11%
Lennert Buytenhek41.47%222.22%
Wolfgang Denk10.37%111.11%
Total273100.00%9100.00%


static int mpc52xx_fec_mdio_remove(struct platform_device *of) { struct mii_bus *bus = platform_get_drvdata(of); struct mpc52xx_fec_mdio_priv *priv = bus->priv; mdiobus_unregister(bus); iounmap(priv->regs); kfree(priv); mdiobus_free(bus); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Domen Puncer5192.73%125.00%
Libo Chen23.64%125.00%
Grant C. Likely11.82%125.00%
Lennert Buytenhek11.82%125.00%
Total55100.00%4100.00%

static const struct of_device_id mpc52xx_fec_mdio_match[] = { { .compatible = "fsl,mpc5200b-mdio", }, { .compatible = "fsl,mpc5200-mdio", }, { .compatible = "mpc5200b-fec-phy", }, {} }; MODULE_DEVICE_TABLE(of, mpc52xx_fec_mdio_match); struct platform_driver mpc52xx_fec_mdio_driver = { .driver = { .name = "mpc5200b-fec-phy", .owner = THIS_MODULE, .of_match_table = mpc52xx_fec_mdio_match, }, .probe = mpc52xx_fec_mdio_probe, .remove = mpc52xx_fec_mdio_remove, }; /* let fec driver call it, since this has to be registered before it */ EXPORT_SYMBOL_GPL(mpc52xx_fec_mdio_driver); MODULE_LICENSE("Dual BSD/GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Domen Puncer50977.95%15.56%
Wolfram Sang7110.87%211.11%
Grant C. Likely395.97%633.33%
Andy Fleming81.23%15.56%
René Bürgel71.07%15.56%
Anton Vorontsov71.07%15.56%
Lennert Buytenhek50.77%211.11%
Tejun Heo30.46%15.56%
Libo Chen20.31%15.56%
Wolfgang Denk10.15%15.56%
Fabian Frederick10.15%15.56%
Total653100.00%18100.00%
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