linux-kernel - Re: [PATCH v4] usb: usb3.0 ch9 definitions

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Message-ID: <20101008175234.GA25525@kroah.com>
Date:	Fri, 8 Oct 2010 10:52:34 -0700
From:	Greg KH <greg@...ah.com>
To:	Tatyana Brokhman <tlinder@...eaurora.org>
Cc:	linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] usb: usb3.0 ch9 definitions

On Fri, Oct 08, 2010 at 03:26:18PM +0200, Tatyana Brokhman wrote:
> Adding SuperSpeed usb definitions as defined by ch9 of the USB3.0 spec.
> This patch is a preparation for adding SuperSpeed support to the gadget
> framework.
> 
> Signed-off-by: Tatyana Brokhman<tlinder@...eaurora.org>
> ---
>  include/linux/usb/ch9.h |   58 ++++++++++++++++++++++++++++++++++++++++++++++-
>  1 files changed, 57 insertions(+), 1 deletions(-)
> 
> diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
> index da2ed77..d83115e 100644
> --- a/include/linux/usb/ch9.h
> +++ b/include/linux/usb/ch9.h
> @@ -123,8 +123,23 @@
>  #define USB_DEVICE_A_ALT_HNP_SUPPORT	5	/* (otg) other RH port does */
>  #define USB_DEVICE_DEBUG_MODE		6	/* (special devices only) */
>  
> +/*
> + * New Feature Selectors as added by USB 3.0
> + * See USB 3.0 spec Table 9-6
> + */
> +#define USB_DEVICE_U1_ENABLE	48	/* dev may initiate U1 transition */
> +#define USB_DEVICE_U2_ENABLE	49	/* dev may initiate U2 transition*/

You forget the space on a number of comments, please fix that up.

> +struct usb_ss_cap_descriptor {		/* Link Power Management */
> +	__u8  bLength;
> +	__u8  bDescriptorType;
> +	__u8  bDevCapabilityType;
> +	__u8  bmAttributes;
> +#define USB_LTM_SUPPORT			(1 << 1) /* supports LTM */
> +	__le16 wSpeedSupported;
> +#define USB_LOW_SPEED_OPERATION		(1)	 /* Low speed operation */
> +#define USB_FULL_SPEED_OPERATION	(1 << 1) /* Full speed operation */
> +#define USB_HIGH_SPEED_OPERATION	(1 << 2) /* High speed operation */
> +#define USB_5GBPS_OPERATION		(1 << 3) /* Operation at 5Gbps */
> +	__u8  bFunctionalitySupport;
> +	__u8  bU1devExitLat;
> +	__u16 bU2DevExitLat;

As was pointed out, this still needs to be __le16, as that's the format
of the data, not if it's a bit field or not.

thanks,

greg k-h
--
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