[PATCH v2] usb: dwc2: add bus suspend/resume for dwc2

[Romain Perier]

Hi Kever,


2014-11-06 2:30 GMT+01:00 Kever Yang <kever.yang at rock-chips.com>:
>
> +static int _dwc2_hcd_suspend(struct usb_hcd *hcd)
> +{
> +       struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd);
> +       u32 hprt0;
> +
> +       if (!((hsotg->op_state == OTG_STATE_B_HOST) ||
> +               (hsotg->op_state == OTG_STATE_A_HOST)))
> +               return 0;
> +
> +       if (hsotg->lx_state != DWC2_L0)
> +               return 0;
> +
> +       hprt0 = dwc2_read_hprt0(hsotg);
> +       if (hprt0 & HPRT0_CONNSTS)
> +               dwc2_port_suspend(hsotg, 1);
> +
> +       return 0;
> +}
> +
> +static int _dwc2_hcd_resume(struct usb_hcd *hcd)
> +{
> +       struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd);
> +       u32 hprt0;
> +
> +       if (!((hsotg->op_state == OTG_STATE_B_HOST) ||
> +               (hsotg->op_state == OTG_STATE_A_HOST)))
> +               return 0;
> +
> +       if (hsotg->lx_state != DWC2_L2)
> +               return 0;
> +
> +       hprt0 = dwc2_read_hprt0(hsotg);
> +       if ((hprt0 & HPRT0_CONNSTS) && (hprt0 & HPRT0_SUSP))
> +               dwc2_port_resume(hsotg);
> +
> +       return 0;
> +}

Could you also define these functions under #ifdef CONFIG_PM ?

Thanks.