diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2010-07-28 22:11:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 14:35:44 -0700 |
| commit | f2402f21caba2aceebbf637458b777300669020f (patch) | |
| tree | b63a4aa73da9aa8dc2fc41fdc65d60e5fefa1a48 /drivers | |
| parent | 356c5a4834a74c621715f7a7f16ded914eecbd3c (diff) | |
| download | linux-f2402f21caba2aceebbf637458b777300669020f.tar.bz2 | |
USB: Add USB 2.0 to ssb ohci driver
This adds USB 2.0 support to ssb ohci driver.
This patch was used in OpenWRT for a long time now.
CC: Steve Brown <sbrown@cortland.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ohci-ssb.c | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c index 23fd6a886bdd..48ee6943bf35 100644 --- a/drivers/usb/host/ohci-ssb.c +++ b/drivers/usb/host/ohci-ssb.c @@ -93,8 +93,11 @@ static void ssb_ohci_detach(struct ssb_device *dev) { struct usb_hcd *hcd = ssb_get_drvdata(dev); + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); usb_remove_hcd(hcd); iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); ssb_device_disable(dev, 0); } @@ -106,10 +109,52 @@ static int ssb_ohci_attach(struct ssb_device *dev) int err = -ENOMEM; u32 tmp, flags = 0; - if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) - flags |= SSB_OHCI_TMSLOW_HOSTMODE; + if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) || + dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32))) + return -EOPNOTSUPP; - ssb_device_enable(dev, flags); + 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)); @@ -200,6 +245,7 @@ static int ssb_ohci_resume(struct ssb_device *dev) static const struct ssb_device_id ssb_ohci_table[] = { SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV), SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV), + SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV), SSB_DEVTABLE_END }; MODULE_DEVICE_TABLE(ssb, ssb_ohci_table); |