On Sun, May 08, 2011 at 02:16:45PM +0300, Tatyana Brokhman wrote:
> This patch adds the SuperSpeed functionality to the gadget framework.
> Support for new SuperSpeed BOS descriptor was added.
> Support for SET_FEATURE and GET_STATUS requests in SuperSpeed mode was
> added.
>
> Signed-off-by: Tatyana Brokhman <[email protected]>
>
> ---
> drivers/usb/gadget/Kconfig | 11 ++
> drivers/usb/gadget/composite.c | 234
> ++++++++++++++++++++++++++++++++++++---
> drivers/usb/gadget/epautoconf.c | 7 +-
> include/linux/usb/ch9.h | 2 -
> include/linux/usb/composite.h | 16 +++
> include/linux/usb/gadget.h | 34 ++++++
> 6 files changed, 284 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
> index 4c02b9f..4c4ba47 100644
> --- a/drivers/usb/gadget/Kconfig
> +++ b/drivers/usb/gadget/Kconfig
> @@ -623,6 +623,17 @@ config USB_GADGET_DUALSPEED
> Means that gadget drivers should include extra descriptors
> and code to handle dual-speed controllers.
>
> +config USB_GADGET_SUPERSPEED
> + boolean "Gadget operating in Super Speed"
> + depends on USB_GADGET
> + depends on USB_GADGET_DUALSPEED
> + help
> + Enabling this feature enables Super Speed support in the Gadget
> + driver. It means that gadget drivers should provide extra (SuperSpeed)
> + descriptors to the host.
> + For composite devices: if SuperSpeed descriptors weren't supplied by
> + the FD, they will be automatically generated with default values.
> +
> #
> # USB Gadget Drivers
> #
> diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
> index b94e573..a622af5 100644
> --- a/drivers/usb/gadget/composite.c
> +++ b/drivers/usb/gadget/composite.c
> @@ -129,6 +129,9 @@ int config_ep_by_speed(struct usb_gadget *g,
> struct usb_endpoint_descriptor *chosen_desc = NULL;
> struct usb_descriptor_header **speed_desc = NULL;
>
> + struct usb_ss_ep_comp_descriptor *comp_desc = NULL;
> + int want_comp_desc = 0;
> +
> struct usb_descriptor_header **d_spd; /* cursor for speed desc */
>
> if (!g || !f || !_ep)
> @@ -136,6 +139,13 @@ int config_ep_by_speed(struct usb_gadget *g,
>
> /* select desired speed */
> switch (g->speed) {
> + case USB_SPEED_SUPER:
> + if (gadget_is_superspeed(g)) {
> + speed_desc = f->ss_descriptors;
> + want_comp_desc = 1;
> + break;
> + }
> + /* else: Fall trough */
> case USB_SPEED_HIGH:
> if (gadget_is_dualspeed(g)) {
> speed_desc = f->hs_descriptors;
> @@ -157,7 +167,31 @@ ep_found:
> /* commit results */
> _ep->maxpacket = le16_to_cpu(chosen_desc->wMaxPacketSize);
> _ep->desc = chosen_desc;
> -
> + _ep->comp_desc = NULL;
> + _ep->maxburst = 0;
> + _ep->mult = 0;
> + if (want_comp_desc) {
> + /*
> + * Companion descriptor should follow EP descriptor
> + * USB 3.0 spec, #9.6.7
> + */
> + comp_desc = (struct usb_ss_ep_comp_descriptor *)*(++d_spd);
> + if (!comp_desc ||
> + (comp_desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP))
> + return -EIO;
> + _ep->comp_desc = comp_desc;
> + if (g->speed == USB_SPEED_SUPER) {
> + int xfer_type = _ep->bEndpointAddress &
> + USB_ENDPOINT_XFERTYPE_MASK ;
how about something liks:
switch (usb_endpoint_type(_ep->desc) {
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
_ep->maxburst = comp_desc->bMaxBurst;
break;
case USB_ENDPOINT_XFER_ISOC:
_ep->mult = comp_desc->bmAttributes & 0x03;
break;
default:
/* nothing to do for control endpoints */
break;
}
--
balbi
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