146 lines
3.3 KiB
C
146 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/**
|
|
* host.c - DesignWare USB3 DRD Controller Host Glue
|
|
*
|
|
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
|
|
*
|
|
* Authors: Felipe Balbi <balbi@ti.com>,
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
#include "core.h"
|
|
|
|
static int dwc3_host_get_irq(struct dwc3 *dwc)
|
|
{
|
|
struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
|
|
int irq;
|
|
|
|
irq = platform_get_irq_byname(dwc3_pdev, "host");
|
|
if (irq > 0)
|
|
goto out;
|
|
|
|
if (irq == -EPROBE_DEFER)
|
|
goto out;
|
|
|
|
irq = platform_get_irq_byname(dwc3_pdev, "dwc_usb3");
|
|
if (irq > 0)
|
|
goto out;
|
|
|
|
if (irq == -EPROBE_DEFER)
|
|
goto out;
|
|
|
|
irq = platform_get_irq(dwc3_pdev, 0);
|
|
if (irq > 0)
|
|
goto out;
|
|
|
|
if (irq != -EPROBE_DEFER)
|
|
dev_err(dwc->dev, "missing host IRQ\n");
|
|
|
|
if (!irq)
|
|
irq = -EINVAL;
|
|
|
|
out:
|
|
return irq;
|
|
}
|
|
|
|
int dwc3_host_init(struct dwc3 *dwc)
|
|
{
|
|
struct property_entry props[3];
|
|
struct platform_device *xhci;
|
|
int ret, irq;
|
|
struct resource *res;
|
|
struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
|
|
int prop_idx = 0;
|
|
|
|
irq = dwc3_host_get_irq(dwc);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ, "host");
|
|
if (!res)
|
|
res = platform_get_resource_byname(dwc3_pdev, IORESOURCE_IRQ,
|
|
"dwc_usb3");
|
|
if (!res)
|
|
res = platform_get_resource(dwc3_pdev, IORESOURCE_IRQ, 0);
|
|
if (!res)
|
|
return -ENOMEM;
|
|
|
|
dwc->xhci_resources[1].start = irq;
|
|
dwc->xhci_resources[1].end = irq;
|
|
dwc->xhci_resources[1].flags = res->flags;
|
|
dwc->xhci_resources[1].name = res->name;
|
|
|
|
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
|
|
if (!xhci) {
|
|
dev_err(dwc->dev, "couldn't allocate xHCI device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
xhci->dev.parent = dwc->dev;
|
|
|
|
dwc->xhci = xhci;
|
|
|
|
ret = platform_device_add_resources(xhci, dwc->xhci_resources,
|
|
DWC3_XHCI_RESOURCES_NUM);
|
|
if (ret) {
|
|
dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
|
|
goto err1;
|
|
}
|
|
|
|
memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props));
|
|
|
|
if (dwc->usb3_lpm_capable)
|
|
props[prop_idx++].name = "usb3-lpm-capable";
|
|
|
|
/**
|
|
* WORKAROUND: dwc3 revisions <=3.00a have a limitation
|
|
* where Port Disable command doesn't work.
|
|
*
|
|
* The suggested workaround is that we avoid Port Disable
|
|
* completely.
|
|
*
|
|
* This following flag tells XHCI to do just that.
|
|
*/
|
|
if (dwc->revision <= DWC3_REVISION_300A)
|
|
props[prop_idx++].name = "quirk-broken-port-ped";
|
|
|
|
if (prop_idx) {
|
|
ret = platform_device_add_properties(xhci, props);
|
|
if (ret) {
|
|
dev_err(dwc->dev, "failed to add properties to xHCI\n");
|
|
goto err1;
|
|
}
|
|
}
|
|
|
|
phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy",
|
|
dev_name(dwc->dev));
|
|
phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy",
|
|
dev_name(dwc->dev));
|
|
|
|
ret = platform_device_add(xhci);
|
|
if (ret) {
|
|
dev_err(dwc->dev, "failed to register xHCI device\n");
|
|
goto err2;
|
|
}
|
|
|
|
return 0;
|
|
err2:
|
|
phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
|
|
dev_name(dwc->dev));
|
|
phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
|
|
dev_name(dwc->dev));
|
|
err1:
|
|
platform_device_put(xhci);
|
|
return ret;
|
|
}
|
|
|
|
void dwc3_host_exit(struct dwc3 *dwc)
|
|
{
|
|
phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
|
|
dev_name(dwc->dev));
|
|
phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
|
|
dev_name(dwc->dev));
|
|
platform_device_unregister(dwc->xhci);
|
|
}
|