static int __devinit ssb_hcd_probe(struct ssb_device *dev,
const struct ssb_device_id *id)
{
int err, tmp;
int start, len;
u16 chipid_top;
u16 coreid = dev->id.coreid;
struct ssb_hcd_device *usb_dev;
/* USBcores are only connected on embedded devices. */
chipid_top = (dev->bus->chip_id & 0xFF00);
if (chipid_top != 0x4700 && chipid_top != 0x5300)
return -ENODEV;
/* TODO: Probably need checks here; is the core connected? */
if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
return -EOPNOTSUPP;
usb_dev = kzalloc(sizeof(struct ssb_hcd_device), GFP_KERNEL);
if (!usb_dev)
return -ENOMEM;
/* We currently always attach SSB_DEV_USB11_HOSTDEV
* as HOST OHCI. If we want to attach it as Client device,
* we must branch here and call into the (yet to
* be written) Client mode driver. Same for remove(). */
usb_dev->enable_flags = ssb_hcd_init_chip(dev);
tmp = ssb_read32(dev, SSB_ADMATCH0);
start = ssb_admatch_base(tmp);
len = (coreid == SSB_DEV_USB20_HOST) ? 0x800 : ssb_admatch_size(tmp);
usb_dev->ohci_dev = ssb_hcd_create_pdev(dev, true, start, len);
if (IS_ERR(usb_dev->ohci_dev)) {
err = PTR_ERR(usb_dev->ohci_dev);
goto err_free_usb_dev;
}
if (coreid == SSB_DEV_USB20_HOST) {
start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
usb_dev->ehci_dev = ssb_hcd_create_pdev(dev, false, start, len);
if (IS_ERR(usb_dev->ehci_dev)) {
err = PTR_ERR(usb_dev->ehci_dev);
goto err_unregister_ohci_dev;
}
}
ssb_set_drvdata(dev, usb_dev);
return 0;
err_unregister_ohci_dev:
platform_device_unregister(usb_dev->ohci_dev);
err_free_usb_dev:
kfree(usb_dev);
return err;
}
static int ssb_ohci_attach(struct ssb_device *dev)
{
struct ssb_ohci_device *ohcidev;
struct usb_hcd *hcd;
int err = -ENOMEM;
u32 tmp, flags = 0;
if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
flags |= SSB_OHCI_TMSLOW_HOSTMODE;
ssb_device_enable(dev, flags);
hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
dev_name(dev->dev));
if (!hcd)
goto err_dev_disable;
ohcidev = hcd_to_ssb_ohci(hcd);
ohcidev->enable_flags = flags;
tmp = ssb_read32(dev, SSB_ADMATCH0);
hcd->rsrc_start = ssb_admatch_base(tmp);
hcd->rsrc_len = ssb_admatch_size(tmp);
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs)
goto err_put_hcd;
err = usb_add_hcd(hcd, dev->irq, IRQF_DISABLED | IRQF_SHARED);
if (err)
goto err_iounmap;
ssb_set_drvdata(dev, hcd);
return err;
err_iounmap:
iounmap(hcd->regs);
err_put_hcd:
usb_put_hcd(hcd);
err_dev_disable:
ssb_device_disable(dev, flags);
return err;
}
static int ssb_ohci_attach(struct ssb_device *dev)
{
struct ssb_ohci_device *ohcidev;
struct usb_hcd *hcd;
int err = -ENOMEM;
u32 tmp, flags = 0;
if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
return -EOPNOTSUPP;
if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
/* Put the device into host-mode. */
flags |= SSB_OHCI_TMSLOW_HOSTMODE;
ssb_device_enable(dev, flags);
} else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
/*
* USB 2.0 special considerations:
*
* In addition to the standard SSB reset sequence, the Host
* Control Register must be programmed to bring the USB core
* and various phy components out of reset.
*/
ssb_device_enable(dev, 0);
ssb_write32(dev, 0x200, 0x7ff);
/* Change Flush control reg */
tmp = ssb_read32(dev, 0x400);
tmp &= ~8;
ssb_write32(dev, 0x400, tmp);
tmp = ssb_read32(dev, 0x400);
/* Change Shim control reg */
tmp = ssb_read32(dev, 0x304);
tmp &= ~0x100;
ssb_write32(dev, 0x304, tmp);
tmp = ssb_read32(dev, 0x304);
udelay(1);
/* Work around for 5354 failures */
if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
/* Change syn01 reg */
tmp = 0x00fe00fe;
ssb_write32(dev, 0x894, tmp);
/* Change syn03 reg */
tmp = ssb_read32(dev, 0x89c);
tmp |= 0x1;
ssb_write32(dev, 0x89c, tmp);
}
} else
ssb_device_enable(dev, 0);
hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
dev_name(dev->dev));
if (!hcd)
goto err_dev_disable;
ohcidev = hcd_to_ssb_ohci(hcd);
ohcidev->enable_flags = flags;
tmp = ssb_read32(dev, SSB_ADMATCH0);
hcd->rsrc_start = ssb_admatch_base(tmp);
hcd->rsrc_len = ssb_admatch_size(tmp);
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs)
goto err_put_hcd;
err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
if (err)
goto err_iounmap;
ssb_set_drvdata(dev, hcd);
return err;
err_iounmap:
iounmap(hcd->regs);
err_put_hcd:
usb_put_hcd(hcd);
err_dev_disable:
ssb_device_disable(dev, flags);
return err;
}
