Re: [PATCH v3 01/22] usb: add usb_otg20_descriptor for OTG 2.0 and above
From: Roger Quadros <hidden>
Date: 2015-06-16 07:25:44
On Tue, 16 Jun 2015 14:51:51 +0800 Li Jun [off-list ref] wrote:
From: Macpaul Lin <redacted> 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 <redacted> Signed-off-by: Li Jun <redacted>
Reviewed-by: Roger Quadros <redacted> cheers, -roger
quoted hunk
--- 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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