Release 4.7 drivers/usb/host/ohci-spear.c
/*
* OHCI HCD (Host Controller Driver) for USB.
*
* Copyright (C) 2010 ST Microelectronics.
* Deepak Sikri<deepak.sikri@st.com>
*
* Based on various ohci-*.c drivers
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/clk.h>
#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/signal.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include "ohci.h"
#define DRIVER_DESC "OHCI SPEAr driver"
static const char hcd_name[] = "SPEAr-ohci";
struct spear_ohci {
struct clk *clk;
};
#define to_spear_ohci(hcd) (struct spear_ohci *)(hcd_to_ohci(hcd)->priv)
static struct hc_driver __read_mostly ohci_spear_hc_driver;
static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
{
const struct hc_driver *driver = &ohci_spear_hc_driver;
struct ohci_hcd *ohci;
struct usb_hcd *hcd = NULL;
struct clk *usbh_clk;
struct spear_ohci *sohci_p;
struct resource *res;
int retval, irq;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
retval = irq;
goto fail;
}
/*
* Right now device-tree probed devices don't get dma_mask set.
* Since shared usb code relies on it, set it here for now.
* Once we have dma capability bindings this can go away.
*/
retval = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (retval)
goto fail;
usbh_clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(usbh_clk)) {
dev_err(&pdev->dev, "Error getting interface clock\n");
retval = PTR_ERR(usbh_clk);
goto fail;
}
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
goto fail;
}
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 err_put_hcd;
}
hcd->rsrc_start = pdev->resource[0].start;
hcd->rsrc_len = resource_size(res);
sohci_p = to_spear_ohci(hcd);
sohci_p->clk = usbh_clk;
clk_prepare_enable(sohci_p->clk);
ohci = hcd_to_ohci(hcd);
retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), 0);
if (retval == 0) {
device_wakeup_enable(hcd->self.controller);
return retval;
}
clk_disable_unprepare(sohci_p->clk);
err_put_hcd:
usb_put_hcd(hcd);
fail:
dev_err(&pdev->dev, "init fail, %d\n", retval);
return retval;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| deepak sikri | deepak sikri | 236 | 69.62% | 1 | 8.33% |
| varka bhadram | varka bhadram | 22 | 6.49% | 1 | 8.33% |
| manjunath goudar | manjunath goudar | 19 | 5.60% | 1 | 8.33% |
| viresh kumar | viresh kumar | 12 | 3.54% | 1 | 8.33% |
| russell king | russell king | 12 | 3.54% | 2 | 16.67% |
| peter chen | peter chen | 11 | 3.24% | 1 | 8.33% |
| jingoo han | jingoo han | 10 | 2.95% | 1 | 8.33% |
| stephen warren | stephen warren | 7 | 2.06% | 1 | 8.33% |
| amardeep rai | amardeep rai | 5 | 1.47% | 1 | 8.33% |
| stefan roese | stefan roese | 4 | 1.18% | 1 | 8.33% |
| yong zhang | yong zhang | 1 | 0.29% | 1 | 8.33% |
| Total | 339 | 100.00% | 12 | 100.00% |
static int spear_ohci_hcd_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct spear_ohci *sohci_p = to_spear_ohci(hcd);
usb_remove_hcd(hcd);
if (sohci_p->clk)
clk_disable_unprepare(sohci_p->clk);
usb_put_hcd(hcd);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| deepak sikri | deepak sikri | 51 | 89.47% | 1 | 50.00% |
| manjunath goudar | manjunath goudar | 6 | 10.53% | 1 | 50.00% |
| Total | 57 | 100.00% | 2 | 100.00% |
#if defined(CONFIG_PM)
static int spear_ohci_hcd_drv_suspend(struct platform_device *pdev,
pm_message_t message)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
struct spear_ohci *sohci_p = to_spear_ohci(hcd);
bool do_wakeup = device_may_wakeup(&pdev->dev);
int ret;
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
ret = ohci_suspend(hcd, do_wakeup);
if (ret)
return ret;
clk_disable_unprepare(sohci_p->clk);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| deepak sikri | deepak sikri | 68 | 64.15% | 1 | 33.33% |
| majunath goudar | majunath goudar | 33 | 31.13% | 1 | 33.33% |
| manjunath goudar | manjunath goudar | 5 | 4.72% | 1 | 33.33% |
| Total | 106 | 100.00% | 3 | 100.00% |
static int spear_ohci_hcd_drv_resume(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
struct spear_ohci *sohci_p = to_spear_ohci(hcd);
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
clk_prepare_enable(sohci_p->clk);
ohci_resume(hcd, false);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| deepak sikri | deepak sikri | 72 | 90.00% | 1 | 33.33% |
| manjunath goudar | manjunath goudar | 5 | 6.25% | 1 | 33.33% |
| florian fainelli | florian fainelli | 3 | 3.75% | 1 | 33.33% |
| Total | 80 | 100.00% | 3 | 100.00% |
#endif
static const struct of_device_id spear_ohci_id_table[] = {
{ .compatible = "st,spear600-ohci", },
{ },
};
MODULE_DEVICE_TABLE(of, spear_ohci_id_table);
/* Driver definition to register with the platform bus */
static struct platform_driver spear_ohci_hcd_driver = {
.probe = spear_ohci_hcd_drv_probe,
.remove = spear_ohci_hcd_drv_remove,
#ifdef CONFIG_PM
.suspend = spear_ohci_hcd_drv_suspend,
.resume = spear_ohci_hcd_drv_resume,
#endif
.driver = {
.name = "spear-ohci",
.of_match_table = spear_ohci_id_table,
},
};
static const struct ohci_driver_overrides spear_overrides __initconst = {
.extra_priv_size = sizeof(struct spear_ohci),
};
static int __init ohci_spear_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info("%s: " DRIVER_DESC "\n", hcd_name);
ohci_init_driver(&ohci_spear_hc_driver, &spear_overrides);
return platform_driver_register(&spear_ohci_hcd_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| manjunath goudar | manjunath goudar | 43 | 100.00% | 1 | 100.00% |
| Total | 43 | 100.00% | 1 | 100.00% |
module_init(ohci_spear_init);
static void __exit ohci_spear_cleanup(void)
{
platform_driver_unregister(&spear_ohci_hcd_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| manjunath goudar | manjunath goudar | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_exit(ohci_spear_cleanup);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Deepak Sikri");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:spear-ohci");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| deepak sikri | deepak sikri | 511 | 60.98% | 1 | 6.25% |
| manjunath goudar | manjunath goudar | 174 | 20.76% | 1 | 6.25% |
| majunath goudar | majunath goudar | 33 | 3.94% | 1 | 6.25% |
| stefan roese | stefan roese | 29 | 3.46% | 1 | 6.25% |
| varka bhadram | varka bhadram | 22 | 2.63% | 1 | 6.25% |
| russell king | russell king | 12 | 1.43% | 2 | 12.50% |
| viresh kumar | viresh kumar | 12 | 1.43% | 1 | 6.25% |
| jingoo han | jingoo han | 11 | 1.31% | 2 | 12.50% |
| peter chen | peter chen | 11 | 1.31% | 1 | 6.25% |
| luis de bethencourt | luis de bethencourt | 7 | 0.84% | 1 | 6.25% |
| stephen warren | stephen warren | 7 | 0.84% | 1 | 6.25% |
| amardeep rai | amardeep rai | 5 | 0.60% | 1 | 6.25% |
| florian fainelli | florian fainelli | 3 | 0.36% | 1 | 6.25% |
| yong zhang | yong zhang | 1 | 0.12% | 1 | 6.25% |
| bill pemberton | bill pemberton | | 0.00% | 0 | 0.00% |
| Total | 838 | 100.00% | 16 | 100.00% |
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