On Tue, 16 Jun 2015 14:51:51 +0800
Li Jun <jun.li@xxxxxxxxxxxxx> wrote:
> From: Macpaul Lin <macpaul@xxxxxxxxx>
>
> OTG 2.0 introduces bcdOTG in otg descriptor to identify the OTG and EH
> supplement release number with which the OTG device is compliant, this
> patch adds structure usb_otg20_descriptor for OTG 2.0 and above.
>
> Signed-off-by: Macpaul Lin <macpaul@xxxxxxxxx>
> Signed-off-by: Li Jun <jun.li@xxxxxxxxxxxxx>
Reviewed-by: Roger Quadros <rogerq@xxxxxx>
cheers,
-roger
> ---
> include/uapi/linux/usb/ch9.h | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
> index aa33fd1..aec6899 100644
> --- a/include/uapi/linux/usb/ch9.h
> +++ b/include/uapi/linux/usb/ch9.h
> @@ -674,6 +674,17 @@ struct usb_otg_descriptor {
> __u8 bmAttributes; /* support for HNP, SRP, etc */
> } __attribute__ ((packed));
>
> +/* USB_DT_OTG (from OTG 2.0 supplement) */
> +struct usb_otg20_descriptor {
> + __u8 bLength;
> + __u8 bDescriptorType;
> +
> + __u8 bmAttributes; /* support for HNP, SRP and ADP, etc */
> + __le16 bcdOTG; /* OTG and EH supplement release number
> + * in binary-coded decimal(i.e. 2.0 is 0200H)
> + */
> +} __attribute__ ((packed));
> +
> /* from usb_otg_descriptor.bmAttributes */
> #define USB_OTG_SRP (1 << 0)
> #define USB_OTG_HNP (1 << 1) /* swap host/device roles */
--
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