int tegra_udc_clk_init(struct platform_device *pdev)
{
NvError nverr;
nverr = NvDdkUsbPhyOpen(s_hRmGlobal, pdev->id, &s_hUsbPhy);
if (nverr != NvSuccess)
return -ENODEV;
/* Power up the USB phy */
NV_ASSERT_SUCCESS(NvDdkUsbPhyPowerUp(s_hUsbPhy, NV_FALSE, 0));
wake_lock_init(&s_wake_lock, WAKE_LOCK_SUSPEND, "tegra-udc");
return 0;
}
static int tegra_ehci_probe(struct platform_device *pdev)
{
struct resource *res;
struct tegra_hcd_platform_data *pdata = pdev->dev.platform_data;
struct usb_hcd *hcd;
int e = 0;
int irq;
unsigned int temp;
struct ehci_hcd *ehci;
if (!pdata) {
dev_err(&pdev->dev, "platform data must be specified\n");
return -EINVAL;
}
WARN_ON(!pdev->dev.coherent_dma_mask || !pdev->dev.dma_mask);
hcd = usb_create_hcd(&tegra_ehci_hc_driver, &pdev->dev,
dev_name(&pdev->dev));
if (IS_ERR_OR_NULL(hcd)) {
dev_err(&pdev->dev, "Unable to create HCD\n");
return -ENOMEM;
}
if (pdata->id_detect == ID_PIN_GPIO) {
e = gpio_request(pdata->gpio_nr, dev_name(&pdev->dev));
if (e < 0) {
dev_err(&pdev->dev, "request ID pin GPIO failed\n");
goto fail_hcd;
}
e = gpio_direction_input(pdata->gpio_nr);
if (e < 0) {
dev_err(&pdev->dev, "failed to set ID pin as input\n");
goto fail_gpio;
}
}
INIT_WORK(&pdata->work, tegra_ehci_busy_hint_work);
/* Init the tegra USB phy */
if (NvDdkUsbPhyOpen(s_hRmGlobal, pdata->instance,
&pdata->hUsbPhy) != NvSuccess) {
dev_err(&pdev->dev, "failed to open USB phy DDK\n");
e = -ENODEV;
goto fail_gpio;
}
tegra_ehci_power_up(hcd);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
e = -ENXIO;
goto fail_phy;
}
if (!pdata->otg_mode) {
res = request_mem_region(res->start, resource_size(res),
dev_name(&pdev->dev));
if (!res) {
dev_err(&pdev->dev, "resource in use\n");
e = -EBUSY;
goto fail_phy;
}
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = ioremap(res->start, resource_size(res));
if (!hcd->regs) {
e = -ENOMEM;
goto fail_mem;
}
/* Set to Host mode by setting bit 0-1 of USB device mode register */
temp = readl(hcd->regs + TEGRA_USB_USBMODE_REG_OFFSET);
writel((temp | TEGRA_USB_USBMODE_HOST),
(hcd->regs + TEGRA_USB_USBMODE_REG_OFFSET));
irq = platform_get_irq(pdev, 0);
if (!irq) {
e = -ENODEV;
goto fail_iomap;
}
set_irq_flags(irq, IRQF_VALID);
ehci = hcd_to_ehci(hcd);
INIT_WORK(&ehci->irq_work, tegra_ehci_irq_work);
e = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
if (e != 0) {
dev_err(&pdev->dev, "failed to add HCD\n");
goto fail_iomap;
}
platform_set_drvdata(pdev, hcd);
#ifdef CONFIG_DMABOUNCE
e = dmabounce_register_dev(&pdev->dev, 1024, 32768);
if (e != 0) {
dev_err(&pdev->dev, "failed to register DMA bounce\n");
goto fail_add;
}
#endif
#ifdef CONFIG_USB_OTG_UTILS
if (pdata->otg_mode) {
ehci->transceiver = otg_get_transceiver();
if (!ehci->transceiver) {
dev_err(&pdev->dev, "Failed to get OTG transceiver\n");
e = -ENODEV;
goto fail_dmabounce;
}
otg_set_host(ehci->transceiver, (struct usb_bus *)hcd);
/* Stop the controller and power down the phy, OTG will
* start the host driver based on the ID pin
* detection */
ehci_halt(ehci);
/* reset the host and put the controller in idle mode */
temp = ehci_readl(ehci, &ehci->regs->command);
temp |= CMD_RESET;
ehci_writel(ehci, temp, &ehci->regs->command);
temp = readl(hcd->regs + TEGRA_USB_USBMODE_REG_OFFSET);
writel((temp & ~TEGRA_USB_USBMODE_HOST),
(hcd->regs + TEGRA_USB_USBMODE_REG_OFFSET));
/* indicate hcd flags, that hardware is not accessable now
* in host mode*/
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
tegra_ehci_power_down(hcd);
ehci->host_reinited = 0;
} else
#endif
{
if (pdata->id_detect == ID_PIN_CABLE_ID) {
/* enable the cable ID interrupt */
temp = readl(hcd->regs + TEGRA_USB_PHY_WAKEUP_REG_OFFSET);
temp |= TEGRA_USB_ID_INT_ENABLE;
temp |= TEGRA_USB_ID_PIN_WAKEUP_ENABLE;
writel(temp, (hcd->regs + TEGRA_USB_PHY_WAKEUP_REG_OFFSET));
/* Check if we detect any device connected */
if (temp & TEGRA_USB_ID_PIN_STATUS) {
tegra_ehci_power_down(hcd);
} else {
tegra_ehci_power_up(hcd);
}
}
}
return 0;
fail_dmabounce:
#ifdef CONFIG_DMABOUNCE
dmabounce_unregister_dev(&pdev->dev);
#endif
fail_add:
usb_remove_hcd(hcd);
fail_iomap:
iounmap(hcd->regs);
fail_mem:
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
fail_phy:
NvDdkUsbPhyClose(pdata->hUsbPhy);
fail_gpio:
if (pdata->gpio_nr)
gpio_free(pdata->gpio_nr);
fail_hcd:
usb_put_hcd(hcd);
return e;
}
/* platform driver interface */
static int __devinit tegra_otg_probe(struct platform_device *pdev)
{
int err = 0;
struct resource *res;
int instance = pdev->id;
NvError e;
struct tegra_otg_platform_data *pdata;
sg_tegra_otg = kzalloc(sizeof(struct tegra_otg_data), GFP_KERNEL);
if (!sg_tegra_otg)
return -ENOMEM;
spin_lock_init(&sg_tegra_otg->lock);
platform_set_drvdata(pdev, sg_tegra_otg);
NV_CHECK_ERROR_CLEANUP(
NvDdkUsbPhyOpen(s_hRmGlobal, instance, &sg_tegra_otg->usb_phy)
);
NV_CHECK_ERROR_CLEANUP(
NvDdkUsbPhyPowerUp(sg_tegra_otg->usb_phy, NV_FALSE, 0)
);
sg_tegra_otg->instance = pdev->id;
sg_tegra_otg->dev = &pdev->dev;
sg_tegra_otg->otg.label = driver_name;
sg_tegra_otg->otg.state = OTG_STATE_UNDEFINED;
sg_tegra_otg->otg.set_peripheral = tegra_otg_set_peripheral;
sg_tegra_otg->otg.set_host = tegra_otg_set_host;
sg_tegra_otg->otg.set_power = tegra_otg_set_power;
sg_tegra_otg->otg.set_suspend = tegra_otg_set_suspend;
pdata = sg_tegra_otg->dev->platform_data;
if(pdata->usb_property->IdPinDetectionType == NvOdmUsbIdPinType_CableId)
sg_tegra_otg->id_connected = 1;
if(pdata->usb_property->UseInternalPhyWakeup)
sg_tegra_otg->vbus_connected = 1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
err = -ENXIO;
goto err_irq;
}
sg_tegra_otg->regs = ioremap(res->start, resource_size(res));
if (!sg_tegra_otg->regs) {
err = -ENOMEM;
goto err_irq;
}
sg_tegra_otg->irq = platform_get_irq(pdev, 0);
if (!sg_tegra_otg->irq) {
err = -ENODEV;
goto err_irq;
}
err = request_irq(sg_tegra_otg->irq, tegra_otg_irq, IRQF_SHARED,
driver_name, pdev);
if (err) {
printk("cannot request irq %d err %d\n",
sg_tegra_otg->irq, err);
goto err_mem_map;
}
/* only active when a gadget is registered */
err = otg_set_transceiver(&sg_tegra_otg->otg);
if (err) {
dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
err);
goto err_otg;
}
NvDdkUsbPhyPowerDown(sg_tegra_otg->usb_phy, NV_FALSE, 0);
return 0;
err_otg:
free_irq(sg_tegra_otg->irq, &pdev->dev);
err_mem_map:
iounmap(sg_tegra_otg->regs);
err_irq:
NvDdkUsbPhyClose(sg_tegra_otg->usb_phy);
fail:
platform_set_drvdata(pdev, NULL);
kfree(sg_tegra_otg);
return err;
}
