static int ehci_platform_probe(struct platform_device *dev)
{
struct usb_hcd *hcd;
struct resource *res_mem;
struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
struct ehci_platform_priv *priv;
struct ehci_hcd *ehci;
int err, irq, phy_num, clk = 0;
if (usb_disabled())
return -ENODEV;
/*
* Use reasonable defaults so platforms don't have to provide these
* with DT probing on ARM.
*/
if (!pdata)
pdata = &ehci_platform_defaults;
err = dma_coerce_mask_and_coherent(&dev->dev,
pdata->dma_mask_64 ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
if (err)
return err;
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
return irq;
}
hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
dev_name(&dev->dev));
if (!hcd)
return -ENOMEM;
platform_set_drvdata(dev, hcd);
dev->dev.platform_data = pdata;
priv = hcd_to_ehci_priv(hcd);
ehci = hcd_to_ehci(hcd);
if (pdata == &ehci_platform_defaults && dev->dev.of_node) {
if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
ehci->big_endian_mmio = 1;
if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
ehci->big_endian_desc = 1;
if (of_property_read_bool(dev->dev.of_node, "big-endian"))
ehci->big_endian_mmio = ehci->big_endian_desc = 1;
if (of_property_read_bool(dev->dev.of_node,
"needs-reset-on-resume"))
priv->reset_on_resume = true;
if (of_property_read_bool(dev->dev.of_node,
"has-transaction-translator"))
hcd->has_tt = 1;
priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
"phys", "#phy-cells");
if (priv->num_phys > 0) {
priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
sizeof(struct phy *), GFP_KERNEL);
if (!priv->phys)
return -ENOMEM;
} else
priv->num_phys = 0;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
priv->phys[phy_num] = devm_of_phy_get_by_index(
&dev->dev, dev->dev.of_node, phy_num);
if (IS_ERR(priv->phys[phy_num])) {
err = PTR_ERR(priv->phys[phy_num]);
goto err_put_hcd;
}
}
for (clk = 0; clk < EHCI_MAX_CLKS; clk++) {
priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
if (IS_ERR(priv->clks[clk])) {
err = PTR_ERR(priv->clks[clk]);
if (err == -EPROBE_DEFER)
goto err_put_clks;
priv->clks[clk] = NULL;
break;
}
}
}
priv->rst = devm_reset_control_get_optional(&dev->dev, NULL);
if (IS_ERR(priv->rst)) {
err = PTR_ERR(priv->rst);
if (err == -EPROBE_DEFER)
goto err_put_clks;
priv->rst = NULL;
} else {
err = reset_control_deassert(priv->rst);
if (err)
goto err_put_clks;
}
if (pdata->big_endian_desc)
ehci->big_endian_desc = 1;
if (pdata->big_endian_mmio)
ehci->big_endian_mmio = 1;
if (pdata->has_tt)
hcd->has_tt = 1;
if (pdata->reset_on_resume)
priv->reset_on_resume = true;
#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
if (ehci->big_endian_mmio) {
dev_err(&dev->dev,
"Error: CONFIG_USB_EHCI_BIG_ENDIAN_MMIO not set\n");
err = -EINVAL;
goto err_reset;
}
#endif
#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_DESC
if (ehci->big_endian_desc) {
dev_err(&dev->dev,
"Error: CONFIG_USB_EHCI_BIG_ENDIAN_DESC not set\n");
err = -EINVAL;
goto err_reset;
}
#endif
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
goto err_reset;
}
res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
goto err_power;
}
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
goto err_power;
device_wakeup_enable(hcd->self.controller);
platform_set_drvdata(dev, hcd);
return err;
err_power:
if (pdata->power_off)
pdata->power_off(dev);
err_reset:
if (priv->rst)
reset_control_assert(priv->rst);
err_put_clks:
while (--clk >= 0)
clk_put(priv->clks[clk]);
err_put_hcd:
if (pdata == &ehci_platform_defaults)
dev->dev.platform_data = NULL;
usb_put_hcd(hcd);
return err;
}
static int ohci_platform_probe(struct platform_device *dev)
{
struct usb_hcd *hcd;
struct resource *res_mem;
struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
struct ohci_platform_priv *priv;
struct ohci_hcd *ohci;
int err, irq, phy_num, clk = 0, rst = 0;
if (usb_disabled())
return -ENODEV;
/*
* Use reasonable defaults so platforms don't have to provide these
* with DT probing on ARM.
*/
if (!pdata)
pdata = &ohci_platform_defaults;
err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
if (err)
return err;
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
return irq;
}
hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
dev_name(&dev->dev));
if (!hcd)
return -ENOMEM;
platform_set_drvdata(dev, hcd);
dev->dev.platform_data = pdata;
priv = hcd_to_ohci_priv(hcd);
ohci = hcd_to_ohci(hcd);
if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
ohci->flags |= OHCI_QUIRK_BE_MMIO;
if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
ohci->flags |= OHCI_QUIRK_BE_DESC;
if (of_property_read_bool(dev->dev.of_node, "big-endian"))
ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
ohci->flags |= OHCI_QUIRK_FRAME_NO;
of_property_read_u32(dev->dev.of_node, "num-ports",
&ohci->num_ports);
priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
"phys", "#phy-cells");
if (priv->num_phys > 0) {
priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
sizeof(struct phy *), GFP_KERNEL);
if (!priv->phys)
return -ENOMEM;
} else
priv->num_phys = 0;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
priv->phys[phy_num] = devm_of_phy_get_by_index(
&dev->dev, dev->dev.of_node, phy_num);
if (IS_ERR(priv->phys[phy_num])) {
err = PTR_ERR(priv->phys[phy_num]);
goto err_put_hcd;
}
}
for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
if (IS_ERR(priv->clks[clk])) {
err = PTR_ERR(priv->clks[clk]);
if (err == -EPROBE_DEFER)
goto err_put_clks;
priv->clks[clk] = NULL;
break;
}
}
for (rst = 0; rst < OHCI_MAX_RESETS; rst++) {
priv->resets[rst] =
devm_reset_control_get_shared_by_index(
&dev->dev, rst);
if (IS_ERR(priv->resets[rst])) {
err = PTR_ERR(priv->resets[rst]);
if (err == -EPROBE_DEFER)
goto err_reset;
priv->resets[rst] = NULL;
break;
}
err = reset_control_deassert(priv->resets[rst]);
if (err)
goto err_reset;
}
}
if (pdata->big_endian_desc)
ohci->flags |= OHCI_QUIRK_BE_DESC;
if (pdata->big_endian_mmio)
ohci->flags |= OHCI_QUIRK_BE_MMIO;
if (pdata->no_big_frame_no)
ohci->flags |= OHCI_QUIRK_FRAME_NO;
if (pdata->num_ports)
ohci->num_ports = pdata->num_ports;
#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
dev_err(&dev->dev,
"Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
err = -EINVAL;
goto err_reset;
}
#endif
#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
if (ohci->flags & OHCI_QUIRK_BE_DESC) {
dev_err(&dev->dev,
"Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
err = -EINVAL;
goto err_reset;
}
#endif
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
goto err_reset;
}
res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
goto err_power;
}
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
goto err_power;
device_wakeup_enable(hcd->self.controller);
platform_set_drvdata(dev, hcd);
return err;
err_power:
if (pdata->power_off)
pdata->power_off(dev);
err_reset:
while (--rst >= 0)
reset_control_assert(priv->resets[rst]);
err_put_clks:
while (--clk >= 0)
clk_put(priv->clks[clk]);
err_put_hcd:
if (pdata == &ohci_platform_defaults)
dev->dev.platform_data = NULL;
usb_put_hcd(hcd);
return err;
}
static int xhci_mtk_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct xhci_hcd_mtk *mtk;
const struct hc_driver *driver;
struct xhci_hcd *xhci;
struct resource *res;
struct usb_hcd *hcd;
struct phy *phy;
int phy_num;
int ret = -ENODEV;
int irq;
if (usb_disabled())
return -ENODEV;
driver = &xhci_mtk_hc_driver;
mtk = devm_kzalloc(dev, sizeof(*mtk), GFP_KERNEL);
if (!mtk)
return -ENOMEM;
mtk->dev = dev;
mtk->vbus = devm_regulator_get(dev, "vbus");
if (IS_ERR(mtk->vbus)) {
dev_err(dev, "fail to get vbus\n");
return PTR_ERR(mtk->vbus);
}
mtk->vusb33 = devm_regulator_get(dev, "vusb33");
if (IS_ERR(mtk->vusb33)) {
dev_err(dev, "fail to get vusb33\n");
return PTR_ERR(mtk->vusb33);
}
mtk->sys_clk = devm_clk_get(dev, "sys_ck");
if (IS_ERR(mtk->sys_clk)) {
dev_err(dev, "fail to get sys_ck\n");
return PTR_ERR(mtk->sys_clk);
}
/*
* reference clock is usually a "fixed-clock", make it optional
* for backward compatibility and ignore the error if it does
* not exist.
*/
mtk->ref_clk = devm_clk_get(dev, "ref_ck");
if (IS_ERR(mtk->ref_clk)) {
if (PTR_ERR(mtk->ref_clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
mtk->ref_clk = NULL;
}
mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable");
ret = usb_wakeup_of_property_parse(mtk, node);
if (ret)
return ret;
mtk->num_phys = of_count_phandle_with_args(node,
"phys", "#phy-cells");
if (mtk->num_phys > 0) {
mtk->phys = devm_kcalloc(dev, mtk->num_phys,
sizeof(*mtk->phys), GFP_KERNEL);
if (!mtk->phys)
return -ENOMEM;
} else {
mtk->num_phys = 0;
}
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
device_enable_async_suspend(dev);
ret = xhci_mtk_ldos_enable(mtk);
if (ret)
goto disable_pm;
ret = xhci_mtk_clks_enable(mtk);
if (ret)
goto disable_ldos;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
ret = irq;
goto disable_clk;
}
/* Initialize dma_mask and coherent_dma_mask to 32-bits */
ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
if (ret)
goto disable_clk;
if (!dev->dma_mask)
dev->dma_mask = &dev->coherent_dma_mask;
else
dma_set_mask(dev, DMA_BIT_MASK(32));
hcd = usb_create_hcd(driver, dev, dev_name(dev));
if (!hcd) {
ret = -ENOMEM;
goto disable_clk;
}
/*
* USB 2.0 roothub is stored in the platform_device.
* Swap it with mtk HCD.
*/
mtk->hcd = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, mtk);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac");
hcd->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto put_usb2_hcd;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ippc");
if (res) { /* ippc register is optional */
mtk->ippc_regs = devm_ioremap_resource(dev, res);
if (IS_ERR(mtk->ippc_regs)) {
ret = PTR_ERR(mtk->ippc_regs);
goto put_usb2_hcd;
}
mtk->has_ippc = true;
} else {
mtk->has_ippc = false;
}
for (phy_num = 0; phy_num < mtk->num_phys; phy_num++) {
phy = devm_of_phy_get_by_index(dev, node, phy_num);
if (IS_ERR(phy)) {
ret = PTR_ERR(phy);
goto put_usb2_hcd;
}
mtk->phys[phy_num] = phy;
}
ret = xhci_mtk_phy_init(mtk);
if (ret)
goto put_usb2_hcd;
ret = xhci_mtk_phy_power_on(mtk);
if (ret)
goto exit_phys;
device_init_wakeup(dev, true);
xhci = hcd_to_xhci(hcd);
xhci->main_hcd = hcd;
xhci->shared_hcd = usb_create_shared_hcd(driver, dev,
dev_name(dev), hcd);
if (!xhci->shared_hcd) {
ret = -ENOMEM;
goto power_off_phys;
}
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret)
goto put_usb3_hcd;
if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
xhci->shared_hcd->can_do_streams = 1;
ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
if (ret)
goto dealloc_usb2_hcd;
return 0;
dealloc_usb2_hcd:
usb_remove_hcd(hcd);
put_usb3_hcd:
xhci_mtk_sch_exit(mtk);
usb_put_hcd(xhci->shared_hcd);
power_off_phys:
xhci_mtk_phy_power_off(mtk);
device_init_wakeup(dev, false);
exit_phys:
xhci_mtk_phy_exit(mtk);
put_usb2_hcd:
usb_put_hcd(hcd);
disable_clk:
xhci_mtk_clks_disable(mtk);
disable_ldos:
xhci_mtk_ldos_disable(mtk);
disable_pm:
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
return ret;
}
static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
{
struct device_node *node = pdev->dev.of_node;
struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
struct device *dev = &pdev->dev;
struct regulator *vbus;
struct resource *res;
int i;
int ret;
ssusb->vusb33 = devm_regulator_get(&pdev->dev, "vusb33");
if (IS_ERR(ssusb->vusb33)) {
dev_err(dev, "failed to get vusb33\n");
return PTR_ERR(ssusb->vusb33);
}
ssusb->sys_clk = devm_clk_get(dev, "sys_ck");
if (IS_ERR(ssusb->sys_clk)) {
dev_err(dev, "failed to get sys clock\n");
return PTR_ERR(ssusb->sys_clk);
}
ssusb->ref_clk = get_optional_clk(dev, "ref_ck");
if (IS_ERR(ssusb->ref_clk))
return PTR_ERR(ssusb->ref_clk);
ssusb->mcu_clk = get_optional_clk(dev, "mcu_ck");
if (IS_ERR(ssusb->mcu_clk))
return PTR_ERR(ssusb->mcu_clk);
ssusb->dma_clk = get_optional_clk(dev, "dma_ck");
if (IS_ERR(ssusb->dma_clk))
return PTR_ERR(ssusb->dma_clk);
ssusb->num_phys = of_count_phandle_with_args(node,
"phys", "#phy-cells");
if (ssusb->num_phys > 0) {
ssusb->phys = devm_kcalloc(dev, ssusb->num_phys,
sizeof(*ssusb->phys), GFP_KERNEL);
if (!ssusb->phys)
return -ENOMEM;
} else {
ssusb->num_phys = 0;
}
for (i = 0; i < ssusb->num_phys; i++) {
ssusb->phys[i] = devm_of_phy_get_by_index(dev, node, i);
if (IS_ERR(ssusb->phys[i])) {
dev_err(dev, "failed to get phy-%d\n", i);
return PTR_ERR(ssusb->phys[i]);
}
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ippc");
ssusb->ippc_base = devm_ioremap_resource(dev, res);
if (IS_ERR(ssusb->ippc_base))
return PTR_ERR(ssusb->ippc_base);
ssusb->dr_mode = usb_get_dr_mode(dev);
if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN)
ssusb->dr_mode = USB_DR_MODE_OTG;
if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
return 0;
/* if host role is supported */
ret = ssusb_wakeup_of_property_parse(ssusb, node);
if (ret) {
dev_err(dev, "failed to parse uwk property\n");
return ret;
}
/* optional property, ignore the error if it does not exist */
of_property_read_u32(node, "mediatek,u3p-dis-msk",
&ssusb->u3p_dis_msk);
vbus = devm_regulator_get(&pdev->dev, "vbus");
if (IS_ERR(vbus)) {
dev_err(dev, "failed to get vbus\n");
return PTR_ERR(vbus);
}
otg_sx->vbus = vbus;
if (ssusb->dr_mode == USB_DR_MODE_HOST)
return 0;
/* if dual-role mode is supported */
otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd");
otg_sx->manual_drd_enabled =
of_property_read_bool(node, "enable-manual-drd");
if (of_property_read_bool(node, "extcon")) {
otg_sx->edev = extcon_get_edev_by_phandle(ssusb->dev, 0);
if (IS_ERR(otg_sx->edev)) {
dev_err(ssusb->dev, "couldn't get extcon device\n");
return PTR_ERR(otg_sx->edev);
}
}
dev_info(dev, "dr_mode: %d, is_u3_dr: %d, u3p_dis_msk: %x, drd: %s\n",
ssusb->dr_mode, otg_sx->is_u3_drd, ssusb->u3p_dis_msk,
otg_sx->manual_drd_enabled ? "manual" : "auto");
return 0;
}
