#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/string.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
-#include <linux/pci.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/bitops.h>
#include <linux/platform_device.h>
+#include <linux/of_platform.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
+#include <asm/mpc5xxx.h>
#include "fs_enet.h"
#include "fec.h"
#define FEC_MII_LOOPS 10000
-static int match_has_phy (struct device *dev, void* data)
-{
- struct platform_device* pdev = container_of(dev, struct platform_device, dev);
- struct fs_platform_info* fpi;
- if(strcmp(pdev->name, (char*)data))
- {
- return 0;
- }
-
- fpi = pdev->dev.platform_data;
- if((fpi)&&(fpi->has_phy))
- return 1;
- return 0;
-}
-
-static int fs_mii_fec_init(struct fec_info* fec, struct fs_mii_fec_platform_info *fmpi)
-{
- struct resource *r;
- fec_t *fecp;
- char* name = "fsl-cpm-fec";
-
- /* we need fec in order to be useful */
- struct platform_device *fec_pdev =
- container_of(bus_find_device(&platform_bus_type, NULL, name, match_has_phy),
- struct platform_device, dev);
-
- if(fec_pdev == NULL) {
- printk(KERN_ERR"Unable to find PHY for %s", name);
- return -ENODEV;
- }
-
- r = platform_get_resource_byname(fec_pdev, IORESOURCE_MEM, "regs");
-
- fec->fecp = fecp = (fec_t*)ioremap(r->start,sizeof(fec_t));
- fec->mii_speed = fmpi->mii_speed;
-
- setbits32(&fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */
- setbits32(&fecp->fec_ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN);
- out_be32(&fecp->fec_ievent, FEC_ENET_MII);
- out_be32(&fecp->fec_mii_speed, fec->mii_speed);
-
- return 0;
-}
-
static int fs_enet_fec_mii_read(struct mii_bus *bus , int phy_id, int location)
{
struct fec_info* fec = bus->priv;
- fec_t *fecp = fec->fecp;
+ struct fec __iomem *fecp = fec->fecp;
int i, ret = -1;
- if ((in_be32(&fecp->fec_r_cntrl) & FEC_RCNTRL_MII_MODE) == 0)
- BUG();
+ BUG_ON((in_be32(&fecp->fec_r_cntrl) & FEC_RCNTRL_MII_MODE) == 0);
/* Add PHY address to register command. */
out_be32(&fecp->fec_mii_data, (phy_id << 23) | mk_mii_read(location));
}
return ret;
-
}
static int fs_enet_fec_mii_write(struct mii_bus *bus, int phy_id, int location, u16 val)
{
struct fec_info* fec = bus->priv;
- fec_t *fecp = fec->fecp;
+ struct fec __iomem *fecp = fec->fecp;
int i;
/* this must never happen */
- if ((in_be32(&fecp->fec_r_cntrl) & FEC_RCNTRL_MII_MODE) == 0)
- BUG();
+ BUG_ON((in_be32(&fecp->fec_r_cntrl) & FEC_RCNTRL_MII_MODE) == 0);
/* Add PHY address to register command. */
out_be32(&fecp->fec_mii_data, (phy_id << 23) | mk_mii_write(location, val));
return 0;
}
-static int __devinit fs_enet_fec_mdio_probe(struct device *dev)
+static int __devinit fs_enet_mdio_probe(struct platform_device *ofdev,
+ const struct of_device_id *match)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct fs_mii_fec_platform_info *pdata;
+ struct resource res;
struct mii_bus *new_bus;
struct fec_info *fec;
- int err = 0;
- if (NULL == dev)
- return -EINVAL;
- new_bus = kzalloc(sizeof(struct mii_bus), GFP_KERNEL);
+ int (*get_bus_freq)(struct device_node *) = match->data;
+ int ret = -ENOMEM, clock, speed;
- if (NULL == new_bus)
- return -ENOMEM;
+ new_bus = mdiobus_alloc();
+ if (!new_bus)
+ goto out;
fec = kzalloc(sizeof(struct fec_info), GFP_KERNEL);
+ if (!fec)
+ goto out_mii;
- if (NULL == fec)
- return -ENOMEM;
-
- new_bus->name = "FEC MII Bus",
- new_bus->read = &fs_enet_fec_mii_read,
- new_bus->write = &fs_enet_fec_mii_write,
- new_bus->reset = &fs_enet_fec_mii_reset,
- new_bus->id = pdev->id;
-
- pdata = (struct fs_mii_fec_platform_info *)pdev->dev.platform_data;
-
- if (NULL == pdata) {
- printk(KERN_ERR "fs_enet FEC mdio %d: Missing platform data!\n", pdev->id);
- return -ENODEV;
+ new_bus->priv = fec;
+ new_bus->name = "FEC MII Bus";
+ new_bus->read = &fs_enet_fec_mii_read;
+ new_bus->write = &fs_enet_fec_mii_write;
+ new_bus->reset = &fs_enet_fec_mii_reset;
+
+ ret = of_address_to_resource(ofdev->dev.of_node, 0, &res);
+ if (ret)
+ goto out_res;
+
+ snprintf(new_bus->id, MII_BUS_ID_SIZE, "%x", res.start);
+
+ fec->fecp = ioremap(res.start, res.end - res.start + 1);
+ if (!fec->fecp)
+ goto out_fec;
+
+ if (get_bus_freq) {
+ clock = get_bus_freq(ofdev->dev.of_node);
+ if (!clock) {
+ /* Use maximum divider if clock is unknown */
+ dev_warn(&ofdev->dev, "could not determine IPS clock\n");
+ clock = 0x3F * 5000000;
+ }
+ } else
+ clock = ppc_proc_freq;
+
+ /*
+ * Scale for a MII clock <= 2.5 MHz
+ * Note that only 6 bits (25:30) are available for MII speed.
+ */
+ speed = (clock + 4999999) / 5000000;
+ if (speed > 0x3F) {
+ speed = 0x3F;
+ dev_err(&ofdev->dev,
+ "MII clock (%d Hz) exceeds max (2.5 MHz)\n",
+ clock / speed);
}
- /*set up workspace*/
-
- fs_mii_fec_init(fec, pdata);
- new_bus->priv = fec;
+ fec->mii_speed = speed << 1;
- new_bus->irq = pdata->irq;
+ setbits32(&fec->fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE);
+ setbits32(&fec->fecp->fec_ecntrl, FEC_ECNTRL_PINMUX |
+ FEC_ECNTRL_ETHER_EN);
+ out_be32(&fec->fecp->fec_ievent, FEC_ENET_MII);
+ clrsetbits_be32(&fec->fecp->fec_mii_speed, 0x7E, fec->mii_speed);
- new_bus->dev = dev;
- dev_set_drvdata(dev, new_bus);
+ new_bus->phy_mask = ~0;
+ new_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
+ if (!new_bus->irq)
+ goto out_unmap_regs;
- err = mdiobus_register(new_bus);
+ new_bus->parent = &ofdev->dev;
+ dev_set_drvdata(&ofdev->dev, new_bus);
- if (0 != err) {
- printk (KERN_ERR "%s: Cannot register as MDIO bus\n",
- new_bus->name);
- goto bus_register_fail;
- }
+ ret = of_mdiobus_register(new_bus, ofdev->dev.of_node);
+ if (ret)
+ goto out_free_irqs;
return 0;
-bus_register_fail:
- kfree(new_bus);
-
- return err;
+out_free_irqs:
+ dev_set_drvdata(&ofdev->dev, NULL);
+ kfree(new_bus->irq);
+out_unmap_regs:
+ iounmap(fec->fecp);
+out_res:
+out_fec:
+ kfree(fec);
+out_mii:
+ mdiobus_free(new_bus);
+out:
+ return ret;
}
-
-static int fs_enet_fec_mdio_remove(struct device *dev)
+static int fs_enet_mdio_remove(struct platform_device *ofdev)
{
- struct mii_bus *bus = dev_get_drvdata(dev);
+ struct mii_bus *bus = dev_get_drvdata(&ofdev->dev);
+ struct fec_info *fec = bus->priv;
mdiobus_unregister(bus);
-
- dev_set_drvdata(dev, NULL);
- kfree(bus->priv);
-
- bus->priv = NULL;
- kfree(bus);
+ dev_set_drvdata(&ofdev->dev, NULL);
+ kfree(bus->irq);
+ iounmap(fec->fecp);
+ kfree(fec);
+ mdiobus_free(bus);
return 0;
}
-static struct device_driver fs_enet_fec_mdio_driver = {
- .name = "fsl-cpm-fec-mdio",
- .bus = &platform_bus_type,
- .probe = fs_enet_fec_mdio_probe,
- .remove = fs_enet_fec_mdio_remove,
+static struct of_device_id fs_enet_mdio_fec_match[] = {
+ {
+ .compatible = "fsl,pq1-fec-mdio",
+ },
+#if defined(CONFIG_PPC_MPC512x)
+ {
+ .compatible = "fsl,mpc5121-fec-mdio",
+ .data = mpc5xxx_get_bus_frequency,
+ },
+#endif
+ {},
+};
+MODULE_DEVICE_TABLE(of, fs_enet_mdio_fec_match);
+
+static struct of_platform_driver fs_enet_fec_mdio_driver = {
+ .driver = {
+ .name = "fsl-fec-mdio",
+ .owner = THIS_MODULE,
+ .of_match_table = fs_enet_mdio_fec_match,
+ },
+ .probe = fs_enet_mdio_probe,
+ .remove = fs_enet_mdio_remove,
};
-int fs_enet_mdio_fec_init(void)
+static int fs_enet_mdio_fec_init(void)
{
- return driver_register(&fs_enet_fec_mdio_driver);
+ return of_register_platform_driver(&fs_enet_fec_mdio_driver);
}
-void fs_enet_mdio_fec_exit(void)
+static void fs_enet_mdio_fec_exit(void)
{
- driver_unregister(&fs_enet_fec_mdio_driver);
+ of_unregister_platform_driver(&fs_enet_fec_mdio_driver);
}
+module_init(fs_enet_mdio_fec_init);
+module_exit(fs_enet_mdio_fec_exit);
Code Review / linux-2.6.git / blobdiff