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USB: isp1760: Support board-specific hardware configurations

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This adds support for hardware configurations that don't match the
chip default register settings (e.g., 16-bit data bus, DACK and
DREQ pulled up instead of down, analog overcurrent mode).

These settings are passed in via the OF device tree.  The PCI
interface still assumes the same default values.

Signed-off-by: Nate Case <ncase@xes-inc.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nate Case 2008-06-17 11:11:38 -05:00 • committed by Greg Kroah-Hartman
parent 6d243e5c76
commit 3faefc88c1
3 changed files with 105 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

35
drivers/usb/host/isp1760-if.c
View file

@ -35,6 +35,8 @@ static int of_isp1760_probe(struct of_device *dev,
int virq;
u64 res_len;
int ret;
const unsigned int *prop;
unsigned int devflags = 0;
ret = of_address_to_resource(dp, 0, &memory);
if (ret)
@ -55,8 +57,32 @@ static int of_isp1760_probe(struct of_device *dev,
virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
oirq.size);
if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
devflags |= ISP1760_FLAG_ISP1761;
if (of_get_property(dp, "port1-disable", NULL) != NULL)
devflags |= ISP1760_FLAG_PORT1_DIS;
/* Some systems wire up only 16 of the 32 data lines */
prop = of_get_property(dp, "bus-width", NULL);
if (prop && *prop == 16)
devflags |= ISP1760_FLAG_BUS_WIDTH_16;
if (of_get_property(dp, "port1-otg", NULL) != NULL)
devflags |= ISP1760_FLAG_OTG_EN;
if (of_get_property(dp, "analog-oc", NULL) != NULL)
devflags |= ISP1760_FLAG_ANALOG_OC;
if (of_get_property(dp, "dack-polarity", NULL) != NULL)
devflags |= ISP1760_FLAG_DACK_POL_HIGH;
if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
devflags |= ISP1760_FLAG_DREQ_POL_HIGH;
hcd = isp1760_register(memory.start, res_len, virq,
IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev));
IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
devflags);
if (IS_ERR(hcd)) {
ret = PTR_ERR(hcd);
goto release_reg;
@ -87,6 +113,9 @@ static struct of_device_id of_isp1760_match[] = {
{
.compatible = "nxp,usb-isp1760",
},
{
.compatible = "nxp,usb-isp1761",
},
{ },
};
MODULE_DEVICE_TABLE(of, of_isp1760_match);
@ -116,6 +145,7 @@ static int __devinit isp1761_pci_probe(struct pci_dev *dev,
int length;
int status = 1;
struct usb_hcd *hcd;
unsigned int devflags = 0;
if (usb_disabled())
return -ENODEV;
@ -200,7 +230,8 @@ static int __devinit isp1761_pci_probe(struct pci_dev *dev,
dev->dev.dma_mask = NULL;
hcd = isp1760_register(pci_mem_phy0, length, dev->irq,
IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev));
IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
devflags);
pci_set_drvdata(dev, hcd);
if (!hcd)
return 0;