diff options
| author | Baolin Wang <baolin.wang@linaro.org> | 2017-04-19 16:55:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-19 20:59:16 +0300 |
| commit | b0c69b4bace3703a29e08dda2b5a10e1073cb9cd (patch) | |
| tree | fa90faddd1559ccee248c84dbdbab19bdf8cc141 /drivers/usb/host | |
| parent | 21470e32ca7f976bf131aa3c7b54019d07f7d821 (diff) | |
| download | linux-b0c69b4bace3703a29e08dda2b5a10e1073cb9cd.tar.xz | |
usb: host: plat: Enable xHCI plat runtime PM
Enable the xHCI plat runtime PM for parent device to suspend/resume
xHCI. Also call pm_runtime_forbid() in probe() function to force users
to explicitly enable runtime pm using power/control in sysfs, in case
some parent devices didn't implement runtime PM callbacks.
[set do_wakeup to true when runtime suspending -Mathias]
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 62e71b8a8b55..60aeaca5b1dc 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -197,10 +197,16 @@ 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) - return -ENOMEM; + if (!hcd) { + ret = -ENOMEM; + goto disable_runtime; + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hcd->regs = devm_ioremap_resource(&pdev->dev, res); @@ -278,6 +284,13 @@ static int xhci_plat_probe(struct platform_device *pdev) goto dealloc_usb2_hcd; 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); return 0; @@ -298,6 +311,10 @@ disable_clk: put_hcd: usb_put_hcd(hcd); +disable_runtime: + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_disable(&pdev->dev); + return ret; } @@ -319,6 +336,9 @@ static int xhci_plat_remove(struct platform_device *dev) clk_disable_unprepare(clk); usb_put_hcd(hcd); + pm_runtime_set_suspended(&dev->dev); + pm_runtime_disable(&dev->dev); + return 0; } @@ -346,14 +366,33 @@ static int xhci_plat_resume(struct device *dev) return xhci_resume(xhci, 0); } +#endif /* CONFIG_PM_SLEEP */ + +#ifdef CONFIG_PM +static int xhci_plat_runtime_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_suspend(xhci, true); +} + +static int xhci_plat_runtime_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_resume(xhci, 0); +} +#endif /* CONFIG_PM */ static const struct dev_pm_ops xhci_plat_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume) + + SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend, + xhci_plat_runtime_resume, + NULL) }; -#define DEV_PM_OPS (&xhci_plat_pm_ops) -#else -#define DEV_PM_OPS NULL -#endif /* CONFIG_PM */ static const struct acpi_device_id usb_xhci_acpi_match[] = { /* XHCI-compliant USB Controller */ @@ -368,7 +407,7 @@ static struct platform_driver usb_xhci_driver = { .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "xhci-hcd", - .pm = DEV_PM_OPS, + .pm = &xhci_plat_pm_ops, .of_match_table = of_match_ptr(usb_xhci_of_match), .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match), }, |