2018-06-13 05:26:43 +08:00
|
|
|
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
/**
|
|
|
|
* dwc3-haps.c - Synopsys HAPS PCI Specific glue layer
|
|
|
|
*
|
|
|
|
* Copyright (C) 2018 Synopsys, Inc.
|
|
|
|
*
|
|
|
|
* Authors: Thinh Nguyen <thinhn@synopsys.com>,
|
|
|
|
* John Youn <johnyoun@synopsys.com>
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/property.h>
|
|
|
|
|
|
|
|
/**
|
|
|
|
* struct dwc3_haps - Driver private structure
|
|
|
|
* @dwc3: child dwc3 platform_device
|
|
|
|
* @pci: our link to PCI bus
|
|
|
|
*/
|
|
|
|
struct dwc3_haps {
|
|
|
|
struct platform_device *dwc3;
|
|
|
|
struct pci_dev *pci;
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct property_entry initial_properties[] = {
|
|
|
|
PROPERTY_ENTRY_BOOL("snps,usb3_lpm_capable"),
|
|
|
|
PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"),
|
|
|
|
PROPERTY_ENTRY_BOOL("snps,dis_enblslpm_quirk"),
|
|
|
|
PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
|
|
|
|
{ },
|
|
|
|
};
|
|
|
|
|
|
|
|
static int dwc3_haps_probe(struct pci_dev *pci,
|
|
|
|
const struct pci_device_id *id)
|
|
|
|
{
|
|
|
|
struct dwc3_haps *dwc;
|
|
|
|
struct device *dev = &pci->dev;
|
|
|
|
struct resource res[2];
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = pcim_enable_device(pci);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "failed to enable pci device\n");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
pci_set_master(pci);
|
|
|
|
|
|
|
|
dwc = devm_kzalloc(dev, sizeof(*dwc), GFP_KERNEL);
|
|
|
|
if (!dwc)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);
|
|
|
|
if (!dwc->dwc3)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
|
|
|
|
|
|
|
|
res[0].start = pci_resource_start(pci, 0);
|
|
|
|
res[0].end = pci_resource_end(pci, 0);
|
|
|
|
res[0].name = "dwc_usb3";
|
|
|
|
res[0].flags = IORESOURCE_MEM;
|
|
|
|
|
|
|
|
res[1].start = pci->irq;
|
|
|
|
res[1].name = "dwc_usb3";
|
|
|
|
res[1].flags = IORESOURCE_IRQ;
|
|
|
|
|
|
|
|
ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));
|
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "couldn't add resources to dwc3 device\n");
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
dwc->pci = pci;
|
|
|
|
dwc->dwc3->dev.parent = dev;
|
|
|
|
|
|
|
|
ret = platform_device_add_properties(dwc->dwc3, initial_properties);
|
|
|
|
if (ret)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
ret = platform_device_add(dwc->dwc3);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "failed to register dwc3 device\n");
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
pci_set_drvdata(pci, dwc);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err:
|
|
|
|
platform_device_put(dwc->dwc3);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dwc3_haps_remove(struct pci_dev *pci)
|
|
|
|
{
|
|
|
|
struct dwc3_haps *dwc = pci_get_drvdata(pci);
|
|
|
|
|
|
|
|
platform_device_unregister(dwc->dwc3);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct pci_device_id dwc3_haps_id_table[] = {
|
|
|
|
{
|
|
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3),
|
2019-02-07 02:49:26 +08:00
|
|
|
/*
|
|
|
|
* i.MX6QP and i.MX7D platform use a PCIe controller with the
|
|
|
|
* same VID and PID as this USB controller. The system may
|
|
|
|
* incorrectly match this driver to that PCIe controller. To
|
|
|
|
* workaround this, specifically use class type USB to prevent
|
|
|
|
* incorrect driver matching.
|
|
|
|
*/
|
|
|
|
.class = (PCI_CLASS_SERIAL_USB << 8),
|
|
|
|
.class_mask = 0xffff00,
|
2018-06-13 05:26:43 +08:00
|
|
|
},
|
|
|
|
{
|
|
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI),
|
|
|
|
},
|
|
|
|
{
|
|
|
|
PCI_DEVICE(PCI_VENDOR_ID_SYNOPSYS,
|
|
|
|
PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31),
|
|
|
|
},
|
|
|
|
{ } /* Terminating Entry */
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, dwc3_haps_id_table);
|
|
|
|
|
|
|
|
static struct pci_driver dwc3_haps_driver = {
|
|
|
|
.name = "dwc3-haps",
|
|
|
|
.id_table = dwc3_haps_id_table,
|
|
|
|
.probe = dwc3_haps_probe,
|
|
|
|
.remove = dwc3_haps_remove,
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Thinh Nguyen <thinhn@synopsys.com>");
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
MODULE_DESCRIPTION("Synopsys HAPS PCI Glue Layer");
|
|
|
|
|
|
|
|
module_pci_driver(dwc3_haps_driver);
|