On 22-10-13 23:14:37, Xu Yang wrote:
> The controller's power may be powered off during system suspend. This
> will add suspend/resume support when the controller suffers power lost.
>
> Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
>
> ---
> Changes since v1:
> - wrap suspend/resume functions with CONFIG_PM_SLEEP.
> ---
> drivers/usb/chipidea/host.c | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index bc3634a54c6b..ebe7400243b1 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -459,6 +459,18 @@ static void ci_hdrc_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
> ci_hdrc_free_dma_aligned_buffer(urb);
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static void ci_hdrc_host_suspend(struct ci_hdrc *ci)
> +{
> + ehci_suspend(ci->hcd, device_may_wakeup(ci->dev));
> +}
> +
> +static void ci_hdrc_host_resume(struct ci_hdrc *ci, bool power_lost)
> +{
> + ehci_resume(ci->hcd, power_lost);
> +}
> +#endif
> +
This code seems doesn't the same with the code at source.codeaurora.org,
please make sure it could work for all platforms.
Peter
> int ci_hdrc_host_init(struct ci_hdrc *ci)
> {
> struct ci_role_driver *rdrv;
> @@ -472,6 +484,10 @@ int ci_hdrc_host_init(struct ci_hdrc *ci)
>
> rdrv->start = host_start;
> rdrv->stop = host_stop;
> +#ifdef CONFIG_PM_SLEEP
> + rdrv->suspend = ci_hdrc_host_suspend;
> + rdrv->resume = ci_hdrc_host_resume;
> +#endif
> rdrv->irq = host_irq;
> rdrv->name = "host";
> ci->roles[CI_ROLE_HOST] = rdrv;
> --
> 2.34.1
>
--
Thanks,
Peter Chen
