Release 4.7 drivers/usb/host/ohci-ppc-of.c
/*
* OHCI HCD (Host Controller Driver) for USB.
*
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
* (C) Copyright 2002 Hewlett-Packard Company
* (C) Copyright 2006 Sylvain Munaut <tnt@246tNt.com>
*
* Bus glue for OHCI HC on the of_platform bus
*
* Modified for of_platform bus from ohci-sa1111.c
*
* This file is licenced under the GPL.
*/
#include <linux/signal.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <asm/prom.h>
static int
ohci_ppc_of_start(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int ret;
if ((ret = ohci_init(ohci)) < 0)
return ret;
if ((ret = ohci_run(ohci)) < 0) {
dev_err(hcd->self.controller, "can't start %s\n",
hcd->self.bus_name);
ohci_stop(hcd);
return ret;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sylvain munaut | sylvain munaut | 74 | 89.16% | 1 | 50.00% |
| greg kroah-hartman | greg kroah-hartman | 9 | 10.84% | 1 | 50.00% |
| Total | 83 | 100.00% | 2 | 100.00% |
static const struct hc_driver ohci_ppc_of_hc_driver = {
.description = hcd_name,
.product_desc = "OF OHCI",
.hcd_priv_size = sizeof(struct ohci_hcd),
/*
* generic hardware linkage
*/
.irq = ohci_irq,
.flags = HCD_USB11 | HCD_MEMORY,
/*
* basic lifecycle operations
*/
.start = ohci_ppc_of_start,
.stop = ohci_stop,
.shutdown = ohci_shutdown,
/*
* managing i/o requests and associated device resources
*/
.urb_enqueue = ohci_urb_enqueue,
.urb_dequeue = ohci_urb_dequeue,
.endpoint_disable = ohci_endpoint_disable,
/*
* scheduling support
*/
.get_frame_number = ohci_get_frame,
/*
* root hub support
*/
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
#ifdef CONFIG_PM
.bus_suspend = ohci_bus_suspend,
.bus_resume = ohci_bus_resume,
#endif
.start_port_reset = ohci_start_port_reset,
};
static int ohci_hcd_ppc_of_probe(struct platform_device *op)
{
struct device_node *dn = op->dev.of_node;
struct usb_hcd *hcd;
struct ohci_hcd *ohci;
struct resource res;
int irq;
int rv;
int is_bigendian;
struct device_node *np;
if (usb_disabled())
return -ENODEV;
is_bigendian =
of_device_is_compatible(dn, "ohci-bigendian") ||
of_device_is_compatible(dn, "ohci-be");
dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n");
rv = of_address_to_resource(dn, 0, &res);
if (rv)
return rv;
hcd = usb_create_hcd(&ohci_ppc_of_hc_driver, &op->dev, "PPC-OF USB");
if (!hcd)
return -ENOMEM;
hcd->rsrc_start = res.start;
hcd->rsrc_len = resource_size(&res);
hcd->regs = devm_ioremap_resource(&op->dev, &res);
if (IS_ERR(hcd->regs)) {
rv = PTR_ERR(hcd->regs);
goto err_rmr;
}
irq = irq_of_parse_and_map(dn, 0);
if (irq == NO_IRQ) {
dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n",
__FILE__);
rv = -EBUSY;
goto err_rmr;
}
ohci = hcd_to_ohci(hcd);
if (is_bigendian) {
ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
if (of_device_is_compatible(dn, "fsl,mpc5200-ohci"))
ohci->flags |= OHCI_QUIRK_FRAME_NO;
if (of_device_is_compatible(dn, "mpc5200-ohci"))
ohci->flags |= OHCI_QUIRK_FRAME_NO;
}
ohci_hcd_init(ohci);
rv = usb_add_hcd(hcd, irq, 0);
if (rv == 0) {
device_wakeup_enable(hcd->self.controller);
return 0;
}
/* by now, 440epx is known to show usb_23 erratum */
np = of_find_compatible_node(NULL, NULL, "ibm,usb-ehci-440epx");
/* Work around - At this point ohci_run has executed, the
* controller is running, everything, the root ports, etc., is
* set up. If the ehci driver is loaded, put the ohci core in
* the suspended state. The ehci driver will bring it out of
* suspended state when / if a non-high speed USB device is
* attached to the USB Host port. If the ehci driver is not
* loaded, do nothing. request_mem_region is used to test if
* the ehci driver is loaded.
*/
if (np != NULL) {
if (!of_address_to_resource(np, 0, &res)) {
if (!request_mem_region(res.start, 0x4, hcd_name)) {
writel_be((readl_be(&ohci->regs->control) |
OHCI_USB_SUSPEND), &ohci->regs->control);
(void) readl_be(&ohci->regs->control);
} else
release_mem_region(res.start, 0x4);
} else
pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
}
irq_dispose_mapping(irq);
err_rmr:
usb_put_hcd(hcd);
return rv;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sylvain munaut | sylvain munaut | 226 | 52.56% | 1 | 7.69% |
| vitaly bordug | vitaly bordug | 110 | 25.58% | 1 | 7.69% |
| jingoo han | jingoo han | 33 | 7.67% | 2 | 15.38% |
| grant likely | grant likely | 19 | 4.42% | 3 | 23.08% |
| valentine barshak | valentine barshak | 17 | 3.95% | 1 | 7.69% |
| joe perches | joe perches | 11 | 2.56% | 2 | 15.38% |
| peter chen | peter chen | 11 | 2.56% | 1 | 7.69% |
| stephen rothwell | stephen rothwell | 2 | 0.47% | 1 | 7.69% |
| yong zhang | yong zhang | 1 | 0.23% | 1 | 7.69% |
| Total | 430 | 100.00% | 13 | 100.00% |
static int ohci_hcd_ppc_of_remove(struct platform_device *op)
{
struct usb_hcd *hcd = platform_get_drvdata(op);
dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");
usb_remove_hcd(hcd);
irq_dispose_mapping(hcd->irq);
usb_put_hcd(hcd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sylvain munaut | sylvain munaut | 49 | 96.08% | 1 | 33.33% |
| jingoo han | jingoo han | 1 | 1.96% | 1 | 33.33% |
| grant likely | grant likely | 1 | 1.96% | 1 | 33.33% |
| Total | 51 | 100.00% | 3 | 100.00% |
static const struct of_device_id ohci_hcd_ppc_of_match[] = {
#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE
{
.name = "usb",
.compatible = "ohci-bigendian",
},
{
.name = "usb",
.compatible = "ohci-be",
},
#endif
#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_LE
{
.name = "usb",
.compatible = "ohci-littledian",
},
{
.name = "usb",
.compatible = "ohci-le",
},
#endif
{},
};
MODULE_DEVICE_TABLE(of, ohci_hcd_ppc_of_match);
#if !defined(CONFIG_USB_OHCI_HCD_PPC_OF_BE) && \
!defined(CONFIG_USB_OHCI_HCD_PPC_OF_LE)
#error "No endianness selected for ppc-of-ohci"
#endif
static struct platform_driver ohci_hcd_ppc_of_driver = {
.probe = ohci_hcd_ppc_of_probe,
.remove = ohci_hcd_ppc_of_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "ppc-of-ohci",
.of_match_table = ohci_hcd_ppc_of_match,
},
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| sylvain munaut | sylvain munaut | 592 | 72.11% | 1 | 4.55% |
| vitaly bordug | vitaly bordug | 110 | 13.40% | 1 | 4.55% |
| jingoo han | jingoo han | 34 | 4.14% | 3 | 13.64% |
| grant likely | grant likely | 24 | 2.92% | 5 | 22.73% |
| valentine barshak | valentine barshak | 17 | 2.07% | 1 | 4.55% |
| joe perches | joe perches | 11 | 1.34% | 2 | 9.09% |
| peter chen | peter chen | 11 | 1.34% | 1 | 4.55% |
| greg kroah-hartman | greg kroah-hartman | 9 | 1.10% | 1 | 4.55% |
| rob herring | rob herring | 6 | 0.73% | 1 | 4.55% |
| stephen rothwell | stephen rothwell | 3 | 0.37% | 2 | 9.09% |
| roger quadros | roger quadros | 1 | 0.12% | 1 | 4.55% |
| marton nemeth | marton nemeth | 1 | 0.12% | 1 | 4.55% |
| yong zhang | yong zhang | 1 | 0.12% | 1 | 4.55% |
| masanari iida | masanari iida | 1 | 0.12% | 1 | 4.55% |
| Total | 821 | 100.00% | 22 | 100.00% |
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