Release 4.11 drivers/usb/host/ehci-w90x900.c
/*
* linux/driver/usb/host/ehci-w90x900.c
*
* Copyright (c) 2008 Nuvoton technology corporation.
*
* Wan ZongShun <mcuos.com@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation;version 2 of the License.
*
*/
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include "ehci.h"
/* enable phy0 and phy1 for w90p910 */
#define ENPHY (0x01<<8)
#define PHY0_CTR (0xA4)
#define PHY1_CTR (0xA8)
#define DRIVER_DESC "EHCI w90x900 driver"
static const char hcd_name[] = "ehci-w90x900 ";
static struct hc_driver __read_mostly ehci_w90x900_hc_driver;
static int ehci_w90x900_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
struct resource *res;
int retval = 0, irq;
unsigned long val;
hcd = usb_create_hcd(&ehci_w90x900_hc_driver,
&pdev->dev, "w90x900 EHCI");
if (!hcd) {
retval = -ENOMEM;
goto err1;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
retval = PTR_ERR(hcd->regs);
goto err2;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
ehci->regs = hcd->regs +
HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
/* enable PHY 0,1,the regs only apply to w90p910
* 0xA4,0xA8 were offsets of PHY0 and PHY1 controller of
* w90p910 IC relative to ehci->regs.
*/
val = __raw_readl(ehci->regs+PHY0_CTR);
val |= ENPHY;
__raw_writel(val, ehci->regs+PHY0_CTR);
val = __raw_readl(ehci->regs+PHY1_CTR);
val |= ENPHY;
__raw_writel(val, ehci->regs+PHY1_CTR);
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
retval = irq;
goto err2;
}
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (retval != 0)
goto err2;
device_wakeup_enable(hcd->self.controller);
return retval;
err2:
usb_put_hcd(hcd);
err1:
return retval;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Wan ZongShun | 230 | 78.50% | 1 | 12.50% |
| Varka Bhadram | 23 | 7.85% | 1 | 12.50% |
| Jingoo Han | 17 | 5.80% | 1 | 12.50% |
| Peter Chen | 9 | 3.07% | 1 | 12.50% |
| Julia Lawall | 6 | 2.05% | 1 | 12.50% |
| Majunath Goudar | 4 | 1.37% | 1 | 12.50% |
| Jan Andersson | 2 | 0.68% | 1 | 12.50% |
| Joe Perches | 2 | 0.68% | 1 | 12.50% |
| Total | 293 | 100.00% | 8 | 100.00% |
static int ehci_w90x900_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Wan ZongShun | 28 | 82.35% | 1 | 50.00% |
| Majunath Goudar | 6 | 17.65% | 1 | 50.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
static struct platform_driver ehci_hcd_w90x900_driver = {
.probe = ehci_w90x900_probe,
.remove = ehci_w90x900_remove,
.driver = {
.name = "w90x900-ehci",
},
};
static int __init ehci_w90X900_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info("%s: " DRIVER_DESC "\n", hcd_name);
ehci_init_driver(&ehci_w90x900_hc_driver, NULL);
return platform_driver_register(&ehci_hcd_w90x900_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Manjunath Goudar | 42 | 100.00% | 1 | 100.00% |
| Total | 42 | 100.00% | 1 | 100.00% |
module_init(ehci_w90X900_init);
static void __exit ehci_w90X900_cleanup(void)
{
platform_driver_unregister(&ehci_hcd_w90x900_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Manjunath Goudar | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_exit(ehci_w90X900_cleanup);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
MODULE_ALIAS("platform:w90p910-ehci");
MODULE_LICENSE("GPL v2");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Wan ZongShun | 316 | 63.20% | 1 | 10.00% |
| Manjunath Goudar | 114 | 22.80% | 1 | 10.00% |
| Varka Bhadram | 23 | 4.60% | 1 | 10.00% |
| Jingoo Han | 17 | 3.40% | 1 | 10.00% |
| Majunath Goudar | 10 | 2.00% | 1 | 10.00% |
| Peter Chen | 9 | 1.80% | 1 | 10.00% |
| Julia Lawall | 6 | 1.20% | 1 | 10.00% |
| Joe Perches | 2 | 0.40% | 1 | 10.00% |
| Jan Andersson | 2 | 0.40% | 1 | 10.00% |
| Justin P. Mattock | 1 | 0.20% | 1 | 10.00% |
| Total | 500 | 100.00% | 10 | 100.00% |
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