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.
Signed-off-by: Baolin Wang <[email protected]>
---
drivers/usb/host/xhci-plat.c | 54 ++++++++++++++++++++++++++++++++++++------
1 file changed, 47 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index bd02a6c..2036c24 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -179,9 +179,15 @@ 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, &pdev->dev, dev_name(&pdev->dev));
- 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);
@@ -258,6 +264,14 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto dealloc_usb2_hcd;
+ 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;
@@ -277,6 +291,10 @@ 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;
}
@@ -298,6 +316,9 @@ 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;
}
@@ -325,14 +346,33 @@ 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, device_may_wakeup(dev));
+}
+
+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 */
@@ -346,7 +386,7 @@ static int xhci_plat_resume(struct device *dev)
.remove = xhci_plat_remove,
.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),
},
--
1.7.9.5
Hi Mathias,
On 30 March 2017 at 11:26, Baolin Wang <[email protected]> wrote:
> 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.
>
> Signed-off-by: Baolin Wang <[email protected]>
> ---
> drivers/usb/host/xhci-plat.c | 54 ++++++++++++++++++++++++++++++++++++------
> 1 file changed, 47 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index bd02a6c..2036c24 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -179,9 +179,15 @@ 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, &pdev->dev, dev_name(&pdev->dev));
> - 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);
> @@ -258,6 +264,14 @@ static int xhci_plat_probe(struct platform_device *pdev)
> if (ret)
> goto dealloc_usb2_hcd;
>
> + 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;
>
>
> @@ -277,6 +291,10 @@ 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;
> }
>
> @@ -298,6 +316,9 @@ 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;
> }
>
> @@ -325,14 +346,33 @@ 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, device_may_wakeup(dev));
> +}
> +
> +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 */
> @@ -346,7 +386,7 @@ static int xhci_plat_resume(struct device *dev)
> .remove = xhci_plat_remove,
> .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),
> },
Any comments?
--
Baolin.wang
Best Regards
On 10.04.2017 10:57, Baolin Wang wrote:
> Hi Mathias,
>
> On 30 March 2017 at 11:26, Baolin Wang <[email protected]> wrote:
>> 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.
>>
>> Signed-off-by: Baolin Wang <[email protected]>
>> ---
> Any comments?
Patch looks good, but it didn't apply cleanly on top of the series going to
usb next last Friday.
I wanted those to go forward so this got postponed.
Can you rebase this on latest usb-next?
-Mathias
Hi Mathias,
On 10 April 2017 at 18:09, Mathias Nyman <[email protected]> wrote:
> On 10.04.2017 10:57, Baolin Wang wrote:
>>
>> Hi Mathias,
>>
>> On 30 March 2017 at 11:26, Baolin Wang <[email protected]> wrote:
>>>
>>> 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.
>>>
>>> Signed-off-by: Baolin Wang <[email protected]>
>>> ---
>>
>> Any comments?
>
>
> Patch looks good, but it didn't apply cleanly on top of the series going to
> usb next last Friday.
> I wanted those to go forward so this got postponed.
>
> Can you rebase this on latest usb-next?
Sure. I will resend it. Thanks.
--
Baolin.wang
Best Regards