write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/usb/host/xhci-ext-caps.c
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@@ -6,10 +6,19 @@
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  */
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 #include <linux/platform_device.h>
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+#include <linux/property.h>
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+#include <linux/pci.h>
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 #include "xhci.h"
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 #define USB_SW_DRV_NAME		"intel_xhci_usb_sw"
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 #define USB_SW_RESOURCE_SIZE	0x400
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+
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+#define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI	0x22b5
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+
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+static const struct property_entry role_switch_props[] = {
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+	PROPERTY_ENTRY_BOOL("sw_switch_disable"),
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+	{},
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+};
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 static void xhci_intel_unregister_pdev(void *arg)
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 {
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@@ -21,6 +30,7 @@
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 	struct usb_hcd *hcd = xhci_to_hcd(xhci);
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 	struct device *dev = hcd->self.controller;
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 	struct platform_device *pdev;
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+	struct pci_dev *pci = to_pci_dev(dev);
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 	struct resource	res = { 0, };
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 	int ret;
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..
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@@ -43,6 +53,15 @@
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 		return ret;
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 	}
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+	if (pci->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
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+		ret = platform_device_add_properties(pdev, role_switch_props);
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+		if (ret) {
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+			dev_err(dev, "failed to register device properties\n");
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+			platform_device_put(pdev);
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+			return ret;
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+		}
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+	}
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+
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 	pdev->dev.parent = dev;
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 	ret = platform_device_add(pdev);