static int exynos_ehci_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd);
clk_prepare_enable(exynos_ehci->clk);
if (exynos_ehci->otg)
exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
if (exynos_ehci->phy)
usb_phy_init(exynos_ehci->phy);
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
ehci_resume(hcd, false);
return 0;
}
static int s5p_ehci_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
struct platform_device *pdev = to_platform_device(dev);
s5p_ehci_clk_prepare_enable(s5p_ehci);
if (s5p_ehci->otg)
s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
if (s5p_ehci->phy) {
usb_phy_init(s5p_ehci->phy);
s5p_ehci->post_lpa_resume = 0;
/*
* We are going to change runtime status to active.
* Make sure we get the phy only if we didn't get it before.
*/
if (pm_runtime_suspended(dev))
pm_runtime_get_sync(s5p_ehci->phy->dev);
} else if (s5p_ehci->pdata->phy_init) {
s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
}
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
ehci_resume(hcd, false);
/* Update runtime PM status and clear runtime_error */
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
return 0;
}
static int exynos_ehci_probe(struct platform_device *pdev)
{
struct exynos_ehci_hcd *exynos_ehci;
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
struct resource *res;
struct usb_phy *phy;
int irq;
int err;
/*
* 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 move to full device tree support this will vanish off.
*/
if (!pdev->dev.dma_mask)
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
if (!pdev->dev.coherent_dma_mask)
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
exynos_setup_vbus_gpio(pdev);
hcd = usb_create_hcd(&exynos_ehci_hc_driver,
&pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
return -ENOMEM;
}
exynos_ehci = to_exynos_ehci(hcd);
if (of_device_is_compatible(pdev->dev.of_node,
"samsung,exynos5440-ehci"))
goto skip_phy;
phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
if (IS_ERR(phy)) {
usb_put_hcd(hcd);
dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
return -EPROBE_DEFER;
} else {
exynos_ehci->phy = phy;
exynos_ehci->otg = phy->otg;
}
skip_phy:
exynos_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");
if (IS_ERR(exynos_ehci->clk)) {
dev_err(&pdev->dev, "Failed to get usbhost clock\n");
err = PTR_ERR(exynos_ehci->clk);
goto fail_clk;
}
err = clk_prepare_enable(exynos_ehci->clk);
if (err)
goto fail_clk;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Failed to get I/O memory\n");
err = -ENXIO;
goto fail_io;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
goto fail_io;
}
irq = platform_get_irq(pdev, 0);
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
goto fail_io;
}
if (exynos_ehci->otg)
exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
if (exynos_ehci->phy)
usb_phy_init(exynos_ehci->phy);
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
goto fail_add_hcd;
}
platform_set_drvdata(pdev, hcd);
return 0;
fail_add_hcd:
if (exynos_ehci->phy)
usb_phy_shutdown(exynos_ehci->phy);
fail_io:
clk_disable_unprepare(exynos_ehci->clk);
fail_clk:
usb_put_hcd(hcd);
return err;
}
static int s5p_ehci_probe(struct platform_device *pdev)
{
struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
struct device_node *node = (&pdev->dev)->of_node;
struct s5p_ehci_hcd *s5p_ehci;
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
struct resource *res;
struct usb_phy *phy;
const struct exynos_ehci_drvdata *drv_data;
int irq;
int err;
/*
* 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 move to full device tree support this will vanish off.
*/
if (!pdev->dev.dma_mask)
pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
if (!pdev->dev.coherent_dma_mask)
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
s5p_setup_vbus_gpio(pdev);
hcd = usb_create_hcd(&s5p_ehci_hc_driver,
&pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
return -ENOMEM;
}
s5p_ehci = to_s5p_ehci(hcd);
phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
if (IS_ERR(phy)) {
/* Fallback to pdata */
if (!pdata) {
usb_put_hcd(hcd);
dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
return -EPROBE_DEFER;
} else {
s5p_ehci->pdata = pdata;
}
} else {
s5p_ehci->phy = phy;
s5p_ehci->otg = phy->otg;
}
err = of_property_read_u32_index(node, "l2-retention", 0,
&s5p_ehci->retention);
if (err)
dev_err(&pdev->dev, " can not find l2-retention value\n");
drv_data = exynos_ehci_get_driver_data(pdev);
s5p_ehci->drvdata = drv_data;
err = s5p_ehci_clk_get(s5p_ehci, &pdev->dev);
if (err) {
dev_err(&pdev->dev, "Failed to get clocks\n");
goto fail_clk;
}
err = s5p_ehci_clk_prepare_enable(s5p_ehci);
if (err)
goto fail_clk;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Failed to get I/O memory\n");
err = -ENXIO;
goto fail_io;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
goto fail_io;
}
irq = platform_get_irq(pdev, 0);
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
goto fail_io;
}
if (s5p_ehci->otg)
s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
if (s5p_ehci->phy) {
/* Make sure PHY is initialized */
usb_phy_init(s5p_ehci->phy);
/*
* PHY can be runtime suspended (e.g. by OHCI driver), so
* make sure PHY is active
*/
pm_runtime_get_sync(s5p_ehci->phy->dev);
} else if (s5p_ehci->pdata->phy_init) {
s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
}
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
if (node) {
u32 tmp_hsic_ports;
ehci->has_synopsys_hsic_bug = of_property_read_bool(node,
"has-synopsys-hsic");
err = of_property_read_u32(node, "hsic-ports",
&tmp_hsic_ports);
if (err) {
ehci->hsic_ports = 0;
dev_info(&pdev->dev, "HSIC ports are not defined\n");
} else {
ehci->hsic_ports = tmp_hsic_ports;
}
} else {
ehci->has_synopsys_hsic_bug =
s5p_ehci->pdata->has_synopsys_hsic_bug;
ehci->hsic_ports = s5p_ehci->pdata->hsic_ports;
}
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
goto fail_add_hcd;
}
platform_set_drvdata(pdev, hcd);
/*
* EHCI root hubs are expected to handle remote wakeup.
* So, wakeup flag init defaults for root hubs.
*/
device_wakeup_enable(&hcd->self.root_hub->dev);
if (create_ehci_sys_file(ehci))
dev_err(&pdev->dev, "Failed to create ehci sys file\n");
s5p_ehci->lpa_nb.notifier_call = s5p_ehci_lpa_event;
s5p_ehci->lpa_nb.next = NULL;
s5p_ehci->lpa_nb.priority = 0;
if (!s5p_ehci->retention) {
err = exynos_pm_register_notifier(&s5p_ehci->lpa_nb);
if (err)
dev_err(&pdev->dev, "Failed to register lpa notifier\n");
}
s5p_ehci->power_on = 1;
if (s5p_ehci->drvdata->rpm_enable) {
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
}
return 0;
fail_add_hcd:
if (s5p_ehci->phy) {
pm_runtime_put_sync(s5p_ehci->phy->dev);
usb_phy_shutdown(s5p_ehci->phy);
} else if (s5p_ehci->pdata->phy_exit) {
s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
}
fail_io:
s5p_ehci_clk_disable_unprepare(s5p_ehci);
fail_clk:
usb_put_hcd(hcd);
return err;
}
