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usb: gadget: add SS descriptors to Ethernet gadget

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Add SuperSpeed descriptors to the Network USB
function drivers.

This has been lightly tested using a Linux host.
I was able to ssh from device to host and host to
device, no obvious problems seen.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Paul Zimmerman
2011-06-27 14:13:18 -07:00
committed by Felipe Balbi
parent 96fe53ef54
commit 04617db7aa
6 changed files with 324 additions and 11 deletions
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12
drivers/usb/gadget/u_ether.c
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@@ -97,16 +97,17 @@ struct eth_dev {
static unsigned qmult = 5;
module_param(qmult, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(qmult, "queue length multiplier at high speed");
MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");
#else /* full speed (low speed doesn't do bulk) */
#define qmult 1
#endif
/* for dual-speed hardware, use deeper queues at highspeed */
/* for dual-speed hardware, use deeper queues at high/super speed */
static inline int qlen(struct usb_gadget *gadget)
{
if (gadget_is_dualspeed(gadget) && gadget->speed == USB_SPEED_HIGH)
if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH ||
gadget->speed == USB_SPEED_SUPER))
return qmult * DEFAULT_QLEN;
else
return DEFAULT_QLEN;
@@ -598,9 +599,10 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
req->length = length;
/* throttle highspeed IRQ rate back slightly */
/* throttle high/super speed IRQ rate back slightly */
if (gadget_is_dualspeed(dev->gadget))
req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH)
req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH ||
dev->gadget->speed == USB_SPEED_SUPER)
? ((atomic_read(&dev->tx_qlen) % qmult) != 0)
: 0;