RE: [PATCH v2 7/9] usb: host: xhci-plat: add priv flag for skip_phy_initialization

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Hi

> -----Original Message-----
> From: Peter Chen <peter.chen@xxxxxxx>
> Sent: 2020年5月24日 7:23
> To: balbi@xxxxxxxxxx; mathias.nyman@xxxxxxxxx
> Cc: linux-usb@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>;
> pawell@xxxxxxxxxxx; rogerq@xxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; Jun Li
> <jun.li@xxxxxxx>; Peter Chen <peter.chen@xxxxxxx>
> Subject: [PATCH v2 7/9] usb: host: xhci-plat: add priv flag for
> skip_phy_initialization
> 
> Some DRD controllers (eg, dwc3 & cdns3) have PHY management at their own driver
> to cover both device and host mode, so add one priv flag for such users to skip
> PHY management from HCD core.

Can this flag be set directly in __cdns3_host_init()?

Li Jun
> 
> Signed-off-by: Peter Chen <peter.chen@xxxxxxx>
> ---
>  drivers/usb/host/xhci-plat.c | 8 ++++++--  drivers/usb/host/xhci-plat.h | 1 +
>  2 files changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index
> 03d6bbe51919..a3d6cb464186 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -183,6 +183,8 @@ static int xhci_plat_probe(struct platform_device *pdev)
>  	struct usb_hcd		*hcd;
>  	int			ret;
>  	int			irq;
> +	struct xhci_plat_priv	*priv = NULL;
> +
> 
>  	if (usb_disabled())
>  		return -ENODEV;
> @@ -280,8 +282,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
>  		priv_match = dev_get_platdata(&pdev->dev);
> 
>  	if (priv_match) {
> -		struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
> -
> +		priv = hcd_to_xhci_priv(hcd);
>  		/* Just copy data for now */
>  		*priv = *priv_match;
>  	}
> @@ -329,6 +330,9 @@ static int xhci_plat_probe(struct platform_device *pdev)
> 
>  	hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
>  	xhci->shared_hcd->tpl_support = hcd->tpl_support;
> +	if (priv && priv->skip_phy_initialization)
> +		hcd->skip_phy_initialization = 1;
> +
>  	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
>  	if (ret)
>  		goto disable_usb_phy;
> diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h index
> 1fb149d1fbce..8825e8eb28d6 100644
> --- a/drivers/usb/host/xhci-plat.h
> +++ b/drivers/usb/host/xhci-plat.h
> @@ -13,6 +13,7 @@
>  struct xhci_plat_priv {
>  	const char *firmware_name;
>  	unsigned long long quirks;
> +	unsigned int skip_phy_initialization:1;
>  	void (*plat_start)(struct usb_hcd *);
>  	int (*init_quirk)(struct usb_hcd *);
>  	int (*suspend_quirk)(struct usb_hcd *);
> --
> 2.17.1





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