static int __devinit mpc_i2c_probe(struct ocp_device *ocp)
{
int result = 0;
struct mpc_i2c *i2c;
if (!(i2c = kmalloc(sizeof(*i2c), GFP_KERNEL))) {
return -ENOMEM;
}
memset(i2c, 0, sizeof(*i2c));
i2c->irq = ocp->def->irq;
i2c->flags = ((struct ocp_fs_i2c_data *)ocp->def->additions)->flags;
init_waitqueue_head(&i2c->queue);
if (!request_mem_region(ocp->def->paddr, MPC_I2C_REGION, "i2c-mpc")) {
printk(KERN_ERR "i2c-mpc - resource unavailable\n");
return -ENODEV;
}
i2c->base = ioremap(ocp->def->paddr, MPC_I2C_REGION);
if (!i2c->base) {
printk(KERN_ERR "i2c-mpc - failed to map controller\n");
result = -ENOMEM;
goto fail_map;
}
if (i2c->irq != OCP_IRQ_NA)
{
if ((result = request_irq(ocp->def->irq, mpc_i2c_isr,
0, "i2c-mpc", i2c)) < 0) {
printk(KERN_ERR
"i2c-mpc - failed to attach interrupt\n");
goto fail_irq;
}
} else
i2c->irq = 0;
i2c->adap = mpc_ops;
i2c_set_adapdata(&i2c->adap, i2c);
if ((result = i2c_add_adapter(&i2c->adap)) < 0) {
printk(KERN_ERR "i2c-mpc - failed to add adapter\n");
goto fail_add;
}
mpc_i2c_setclock(i2c);
ocp_set_drvdata(ocp, i2c);
return result;
fail_add:
if (ocp->def->irq != OCP_IRQ_NA)
free_irq(ocp->def->irq, 0);
fail_irq:
iounmap(i2c->base);
fail_map:
release_mem_region(ocp->def->paddr, MPC_I2C_REGION);
kfree(i2c);
return result;
}
void __exit __tah_fini(struct ocp_device *ocpdev)
{
struct tah_regs *p = ocp_get_drvdata(ocpdev);
BUG_ON(!p);
ocp_set_drvdata(ocpdev, NULL);
iounmap((void *)p);
}
static void __devexit mpc_i2c_remove(struct ocp_device *ocp)
{
struct mpc_i2c *i2c = ocp_get_drvdata(ocp);
ocp_set_drvdata(ocp, NULL);
i2c_del_adapter(&i2c->adap);
if (ocp->def->irq != OCP_IRQ_NA)
free_irq(i2c->irq, i2c);
iounmap(i2c->base);
release_mem_region(ocp->def->paddr, MPC_I2C_REGION);
kfree(i2c);
}
void __rgmii_fini(struct ocp_device *ocpdev, int input)
{
struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
BUG_ON(!dev || dev->users == 0);
RGMII_DBG("%d: fini(%d)" NL, ocpdev->def->index, input);
/* Disable this input */
out_be32(&dev->base->fer,
in_be32(&dev->base->fer) & ~RGMII_FER_MASK(input));
if (!--dev->users) {
/* Free everything if this is the last user */
ocp_set_drvdata(ocpdev, NULL);
iounmap((void *)dev->base);
kfree(dev);
}
}
static int __init rgmii_init(struct ocp_device *ocpdev, int input, int mode)
{
struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
struct rgmii_regs *p;
RGMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, mode);
if (!dev) {
dev = kmalloc(sizeof(struct ibm_ocp_rgmii), GFP_KERNEL);
if (!dev) {
printk(KERN_ERR
"rgmii%d: couldn't allocate device structure!\n",
ocpdev->def->index);
return -ENOMEM;
}
memset(dev, 0, sizeof(struct ibm_ocp_rgmii));
p = (struct rgmii_regs *)ioremap(ocpdev->def->paddr,
sizeof(struct rgmii_regs));
if (!p) {
printk(KERN_ERR
"rgmii%d: could not ioremap device registers!\n",
ocpdev->def->index);
kfree(dev);
return -ENOMEM;
}
dev->base = p;
ocp_set_drvdata(ocpdev, dev);
/* Disable all inputs by default */
out_be32(&p->fer, 0);
} else
p = dev->base;
/* Enable this input */
out_be32(&p->fer, in_be32(&p->fer) | rgmii_mode_mask(mode, input));
printk(KERN_NOTICE "rgmii%d: input %d in %s mode\n",
ocpdev->def->index, input, rgmii_mode_name(mode));
++dev->users;
return 0;
}
static int __init tah_init(struct ocp_device *ocpdev)
{
struct tah_regs *p;
if (ocp_get_drvdata(ocpdev)) {
printk(KERN_ERR "tah%d: already in use!\n", ocpdev->def->index);
return -EBUSY;
}
/* Initialize TAH and enable IPv4 checksum verification, no TSO yet */
p = (struct tah_regs *)ioremap(ocpdev->def->paddr, sizeof(*p));
if (!p) {
printk(KERN_ERR "tah%d: could not ioremap device registers!\n",
ocpdev->def->index);
return -ENOMEM;
}
ocp_set_drvdata(ocpdev, p);
__tah_reset(ocpdev);
return 0;
}
static int __init zmii_init(struct ocp_device *ocpdev, int input, int *mode)
{
struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev);
struct zmii_regs __iomem *p;
ZMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, *mode);
if (!dev) {
dev = kzalloc(sizeof(struct ibm_ocp_zmii), GFP_KERNEL);
if (!dev) {
printk(KERN_ERR
"zmii%d: couldn't allocate device structure!\n",
ocpdev->def->index);
return -ENOMEM;
}
dev->mode = PHY_MODE_NA;
p = ioremap(ocpdev->def->paddr, sizeof(struct zmii_regs));
if (!p) {
printk(KERN_ERR
"zmii%d: could not ioremap device registers!\n",
ocpdev->def->index);
kfree(dev);
return -ENOMEM;
}
dev->base = p;
ocp_set_drvdata(ocpdev, dev);
/* We may need FER value for autodetection later */
dev->fer_save = in_be32(&p->fer);
/* Disable all inputs by default */
out_be32(&p->fer, 0);
} else
p = dev->base;
if (!zmii_valid_mode(*mode)) {
/* Probably an EMAC connected to RGMII,
* but it still may need ZMII for MDIO
*/
goto out;
}
/* Autodetect ZMII mode if not specified.
* This is only for backward compatibility with the old driver.
* Please, always specify PHY mode in your board port to avoid
* any surprises.
*/
if (dev->mode == PHY_MODE_NA) {
if (*mode == PHY_MODE_NA) {
u32 r = dev->fer_save;
ZMII_DBG("%d: autodetecting mode, FER = 0x%08x" NL,
ocpdev->def->index, r);
if (r & (ZMII_FER_MII(0) | ZMII_FER_MII(1)))
dev->mode = PHY_MODE_MII;
else if (r & (ZMII_FER_RMII(0) | ZMII_FER_RMII(1)))
dev->mode = PHY_MODE_RMII;
else
dev->mode = PHY_MODE_SMII;
} else
dev->mode = *mode;
printk(KERN_NOTICE "zmii%d: bridge in %s mode\n",
ocpdev->def->index, zmii_mode_name(dev->mode));
} else {
/* All inputs must use the same mode */
if (*mode != PHY_MODE_NA && *mode != dev->mode) {
printk(KERN_ERR
"zmii%d: invalid mode %d specified for input %d\n",
ocpdev->def->index, *mode, input);
return -EINVAL;
}
}
/* Report back correct PHY mode,
* it may be used during PHY initialization.
*/
*mode = dev->mode;
/* Enable this input */
out_be32(&p->fer, in_be32(&p->fer) | zmii_mode_mask(dev->mode, input));
out:
++dev->users;
return 0;
}
