Release 4.7 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
| Person | Tokens | Prop | Commits | CommitProp |
| domen puncer | domen puncer | 99 | 73.88% | 1 | 25.00% |
| wolfram sang | wolfram sang | 32 | 23.88% | 2 | 50.00% |
| grant likely | grant likely | 3 | 2.24% | 1 | 25.00% |
| Total | 134 | 100.00% | 4 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| wolfram sang | wolfram sang | 27 | 93.10% | 1 | 50.00% |
| domen puncer | domen puncer | 2 | 6.90% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| domen puncer | domen puncer | 27 | 79.41% | 1 | 50.00% |
| wolfram sang | wolfram sang | 7 | 20.59% | 1 | 50.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| domen puncer | domen puncer | 246 | 90.11% | 1 | 11.11% |
| grant likely | grant likely | 10 | 3.66% | 3 | 33.33% |
| andy fleming | andy fleming | 8 | 2.93% | 1 | 11.11% |
| lennert buytenhek | lennert buytenhek | 4 | 1.47% | 2 | 22.22% |
| wolfram sang | wolfram sang | 4 | 1.47% | 1 | 11.11% |
| wolfgang denk | wolfgang denk | 1 | 0.37% | 1 | 11.11% |
| Total | 273 | 100.00% | 9 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| domen puncer | domen puncer | 51 | 92.73% | 1 | 25.00% |
| libo chen | libo chen | 2 | 3.64% | 1 | 25.00% |
| lennert buytenhek | lennert buytenhek | 1 | 1.82% | 1 | 25.00% |
| grant likely | grant likely | 1 | 1.82% | 1 | 25.00% |
| Total | 55 | 100.00% | 4 | 100.00% |
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
| Person | Tokens | Prop | Commits | CommitProp |
| domen puncer | domen puncer | 509 | 77.95% | 1 | 5.56% |
| wolfram sang | wolfram sang | 71 | 10.87% | 2 | 11.11% |
| grant likely | grant likely | 39 | 5.97% | 6 | 33.33% |
| andy fleming | andy fleming | 8 | 1.23% | 1 | 5.56% |
| rene buergel | rene buergel | 7 | 1.07% | 1 | 5.56% |
| anton vorontsov | anton vorontsov | 7 | 1.07% | 1 | 5.56% |
| lennert buytenhek | lennert buytenhek | 5 | 0.77% | 2 | 11.11% |
| tejun heo | tejun heo | 3 | 0.46% | 1 | 5.56% |
| libo chen | libo chen | 2 | 0.31% | 1 | 5.56% |
| wolfgang denk | wolfgang denk | 1 | 0.15% | 1 | 5.56% |
| fabian frederick | fabian frederick | 1 | 0.15% | 1 | 5.56% |
| Total | 653 | 100.00% | 18 | 100.00% |
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