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Commit 83c03ff2 authored by Mayank Rana's avatar Mayank Rana Committed by Hemant Kumar
Browse files

host: xhci-plat: Enable autosuspend functionality with root hub 



This change enables autosuspend functionality with root hub for USB
host low power mode.

Change-Id: I9bf993a5f85d1470a9005052cb7fa056fa315475
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 3e3d0ab1

drivers/usb/host/xhci-plat.c

+19 −19
Original line number Diff line number Diff line
@@ -241,16 +241,10 @@ static int xhci_plat_probe(struct platform_device *pdev) 
			return ret;

	}



	pm_runtime_set_active(&pdev->dev);

	pm_runtime_enable(&pdev->dev);

	pm_runtime_get_noresume(&pdev->dev);



	hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,

			       dev_name(&pdev->dev), NULL);

	if (!hcd) {

		ret = -ENOMEM;

		goto disable_runtime;

	}

	if (!hcd)

		return -ENOMEM;



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
@@ -286,6 +280,15 @@ static int xhci_plat_probe(struct platform_device *pdev) 
		goto disable_reg_clk;

	}



	if (pdev->dev.parent)

		pm_runtime_resume(pdev->dev.parent);



	pm_runtime_use_autosuspend(&pdev->dev);

	pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);

	pm_runtime_set_active(&pdev->dev);

	pm_runtime_enable(&pdev->dev);

	pm_runtime_get_sync(&pdev->dev);



	xhci = hcd_to_xhci(hcd);

	priv_match = of_device_get_match_data(&pdev->dev);

	if (priv_match) {
@@ -360,13 +363,9 @@ static int xhci_plat_probe(struct platform_device *pdev) 
					__func__);



	device_enable_async_suspend(&pdev->dev);

	pm_runtime_put_noidle(&pdev->dev);



	/*

	 * Prevent runtime pm from being on as default, users should enable

	 * runtime pm using power/control in sysfs.

	 */

	pm_runtime_forbid(&pdev->dev);

	pm_runtime_mark_last_busy(&pdev->dev);

	pm_runtime_put_autosuspend(&pdev->dev);



	return 0;
@@ -389,10 +388,6 @@ static int xhci_plat_probe(struct platform_device *pdev) 
put_hcd:

	usb_put_hcd(hcd);



disable_runtime:

	pm_runtime_put_noidle(&pdev->dev);

	pm_runtime_disable(&pdev->dev);



	return ret;

}
@@ -444,6 +439,11 @@ static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev) 
	struct usb_hcd  *hcd = dev_get_drvdata(dev);

	struct xhci_hcd *xhci = hcd_to_xhci(hcd);



	if (!xhci)

		return 0;



	dev_dbg(dev, "xhci-plat runtime suspend\n");



	return xhci_suspend(xhci, true);

}
@@ -473,7 +473,7 @@ static const struct dev_pm_ops xhci_plat_pm_ops = { 


	SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,

			   xhci_plat_runtime_resume,

			   NULL)

			   xhci_plat_runtime_idle)

};



static const struct acpi_device_id usb_xhci_acpi_match[] = {