Check during probe() if a hub supported by the onboard_usb_hub driver is connected to the controller. If such a hub is found create the corresponding platform device. This requires the device tree to have a node for the hub with its vendor and product id (which is not common for USB devices). Further the platform device is only created when CONFIG_USB_ONBOARD_HUB=y/m. Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> --- Changes in v7: - none Changes in v6: - none Changes in v5: - patch added to the series drivers/usb/host/xhci-plat.c | 16 ++++++++++++++++ include/linux/usb/hcd.h | 2 ++ 2 files changed, 18 insertions(+) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index c1edcc9b13ce..9c0fb7e8df1f 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -15,6 +15,7 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/usb/onboard_hub.h> #include <linux/usb/phy.h> #include <linux/slab.h> #include <linux/acpi.h> @@ -195,6 +196,7 @@ static int xhci_plat_probe(struct platform_device *pdev) int ret; int irq; struct xhci_plat_priv *priv = NULL; + struct device_node *np; if (usb_disabled()) @@ -374,6 +376,17 @@ static int xhci_plat_probe(struct platform_device *pdev) */ pm_runtime_forbid(&pdev->dev); + np = usb_of_get_device_node(hcd->self.root_hub, hcd->self.busnum); + if (np && of_is_onboard_usb_hub(np)) { + struct platform_device *pdev; + + pdev = of_platform_device_create(np, NULL, NULL); + if (pdev) + hcd->onboard_hub_dev = &pdev->dev; + else + xhci_warn(xhci, "failed to create onboard hub platform device\n"); + } + return 0; @@ -420,6 +433,9 @@ static int xhci_plat_remove(struct platform_device *dev) usb_remove_hcd(hcd); usb_put_hcd(shared_hcd); + if (hcd->onboard_hub_dev) + of_platform_device_destroy(hcd->onboard_hub_dev, NULL); + clk_disable_unprepare(clk); clk_disable_unprepare(reg_clk); usb_put_hcd(hcd); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 96281cd50ff6..d02a508e19b0 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -225,6 +225,8 @@ struct usb_hcd { * (ohci 32, uhci 1024, ehci 256/512/1024). */ + struct device *onboard_hub_dev; + /* The HC driver's private data is stored at the end of * this structure. */ -- 2.31.0.208.g409f899ff0-goog