/**
* usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
* @dev: USB Host Controller being removed
* Context: !in_interrupt()
*
* Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
* the HCD's stop() method. It is always called from a thread
* context, normally "rmmod", "apmd", or something similar.
*
*/
void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
{
struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
usb_remove_hcd(hcd);
pxa27x_stop_hc(ohci, &pdev->dev);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
clk_put(ohci->clk);
}
static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
if (time_before(jiffies, ohci->ohci.next_statechange))
msleep(5);
ohci->ohci.next_statechange = jiffies;
pxa27x_stop_hc(ohci, dev);
return 0;
}
/**
* ohci_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
* @dev: USB Host Controller being removed
* Context: !in_interrupt()
*
* Reverses the effect of ohci_hcd_pxa27x_probe(), first invoking
* the HCD's stop() method. It is always called from a thread
* context, normally "rmmod", "apmd", or something similar.
*
*/
static int ohci_hcd_pxa27x_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
unsigned int i;
usb_remove_hcd(hcd);
pxa27x_stop_hc(pxa_ohci, &pdev->dev);
for (i = 0; i < 3; ++i)
pxa27x_ohci_set_vbus_power(pxa_ohci, i, false);
usb_put_hcd(hcd);
return 0;
}
static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
struct pxaohci_platform_data *inf = dev->platform_data;
int status;
if (time_before(jiffies, ohci->ohci.next_statechange))
msleep(5);
ohci->ohci.next_statechange = jiffies;
if ((status = pxa27x_start_hc(ohci, dev)) < 0)
return status;
/* Select Power Management Mode */
pxa27x_ohci_select_pmm(ohci, inf->port_mode);
ohci_finish_controller_resume(hcd);
return 0;
}
static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
bool do_wakeup = device_may_wakeup(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;
pxa27x_stop_hc(pxa_ohci, dev);
return ret;
}
static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
struct pxaohci_platform_data *inf = dev_get_platdata(dev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int status;
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
status = pxa27x_start_hc(pxa_ohci, dev);
if (status < 0)
return status;
/* Select Power Management Mode */
pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
ohci_resume(hcd, false);
return 0;
}
static int pxa27x_ohci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wIndex, char *buf, u16 wLength)
{
struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
int ret;
switch (typeReq) {
case SetPortFeature:
case ClearPortFeature:
if (!wIndex || wIndex > 3)
return -EPIPE;
if (wValue != USB_PORT_FEAT_POWER)
break;
ret = pxa27x_ohci_set_vbus_power(pxa_ohci, wIndex - 1,
typeReq == SetPortFeature);
if (ret)
return ret;
break;
}
return ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
}
/**
* usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller, and
* then invokes the start() method for the HCD associated with it
* through the hotplug entry's driver_data.
*
*/
int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
{
int retval, irq;
struct usb_hcd *hcd;
struct pxaohci_platform_data *inf;
struct pxa27x_ohci *pxa_ohci;
struct ohci_hcd *ohci;
struct resource *r;
struct clk *usb_clk;
retval = ohci_pxa_of_init(pdev);
if (retval)
return retval;
inf = dev_get_platdata(&pdev->dev);
if (!inf)
return -ENODEV;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
pr_err("no resource of IORESOURCE_IRQ");
return -ENXIO;
}
usb_clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(usb_clk))
return PTR_ERR(usb_clk);
hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
if (!hcd) {
retval = -ENOMEM;
goto err0;
}
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
pr_err("no resource of IORESOURCE_MEM");
retval = -ENXIO;
goto err1;
}
hcd->rsrc_start = r->start;
hcd->rsrc_len = resource_size(r);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_debug("request_mem_region failed");
retval = -EBUSY;
goto err1;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
pr_debug("ioremap failed");
retval = -ENOMEM;
goto err2;
}
/* initialize "struct pxa27x_ohci" */
pxa_ohci = to_pxa27x_ohci(hcd);
pxa_ohci->clk = usb_clk;
pxa_ohci->mmio_base = (void __iomem *)hcd->regs;
retval = pxa27x_start_hc(pxa_ohci, &pdev->dev);
if (retval < 0) {
pr_debug("pxa27x_start_hc failed");
goto err3;
}
/* Select Power Management Mode */
pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
if (inf->power_budget)
hcd->power_budget = inf->power_budget;
/* The value of NDP in roothub_a is incorrect on this hardware */
ohci = hcd_to_ohci(hcd);
ohci->num_ports = 3;
retval = usb_add_hcd(hcd, irq, 0);
if (retval == 0)
return retval;
pxa27x_stop_hc(pxa_ohci, &pdev->dev);
err3:
iounmap(hcd->regs);
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
err0:
clk_put(usb_clk);
return retval;
}
/**
* ohci_hcd_pxa27x_probe - initialize pxa27x-based HCDs
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller, and
* then invokes the start() method for the HCD associated with it
* through the hotplug entry's driver_data.
*
*/
static int ohci_hcd_pxa27x_probe(struct platform_device *pdev)
{
int retval, irq;
struct usb_hcd *hcd;
struct pxaohci_platform_data *inf;
struct pxa27x_ohci *pxa_ohci;
struct ohci_hcd *ohci;
struct resource *r;
struct clk *usb_clk;
unsigned int i;
retval = ohci_pxa_of_init(pdev);
if (retval)
return retval;
inf = dev_get_platdata(&pdev->dev);
if (!inf)
return -ENODEV;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
pr_err("no resource of IORESOURCE_IRQ");
return irq;
}
usb_clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(usb_clk))
return PTR_ERR(usb_clk);
hcd = usb_create_hcd(&ohci_pxa27x_hc_driver, &pdev->dev, "pxa27x");
if (!hcd)
return -ENOMEM;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(hcd->regs)) {
retval = PTR_ERR(hcd->regs);
goto err;
}
hcd->rsrc_start = r->start;
hcd->rsrc_len = resource_size(r);
/* initialize "struct pxa27x_ohci" */
pxa_ohci = to_pxa27x_ohci(hcd);
pxa_ohci->clk = usb_clk;
pxa_ohci->mmio_base = (void __iomem *)hcd->regs;
for (i = 0; i < 3; ++i) {
char name[6];
if (!(inf->flags & (ENABLE_PORT1 << i)))
continue;
sprintf(name, "vbus%u", i + 1);
pxa_ohci->vbus[i] = devm_regulator_get(&pdev->dev, name);
}
retval = pxa27x_start_hc(pxa_ohci, &pdev->dev);
if (retval < 0) {
pr_debug("pxa27x_start_hc failed");
goto err;
}
/* Select Power Management Mode */
pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
if (inf->power_budget)
hcd->power_budget = inf->power_budget;
/* The value of NDP in roothub_a is incorrect on this hardware */
ohci = hcd_to_ohci(hcd);
ohci->num_ports = 3;
retval = usb_add_hcd(hcd, irq, 0);
if (retval == 0) {
device_wakeup_enable(hcd->self.controller);
return retval;
}
pxa27x_stop_hc(pxa_ohci, &pdev->dev);
err:
usb_put_hcd(hcd);
return retval;
}