linux-kernel - Re: [PATCH] usb: gadget: lpc32xx_udc: Port to new start/stop interface

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Date:	Sun, 19 Aug 2012 14:48:33 +0200
From:	Roland Stigge <stigge@...com.de>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
CC:	balbi@...com, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	arnd@...db.de, aletes.xgr@...il.com, kevin.wells@....com,
	srinivas.bakki@....com
Subject: Re: [PATCH] usb: gadget: lpc32xx_udc: Port to new start/stop interface

On 17/08/12 13:39, Sebastian Andrzej Siewior wrote:
>>                  .lep            = 0,
>>                  .eptype         = EP_CTL_TYPE,
>>          },
>>          .ep[1] = {
>>                  .ep = {
>>                          .name   = "ep1-int",
>>                          .ops    =&lpc32xx_ep_ops,
>>                  },
>>                  .udc            =&controller,
>>                  .maxpacket      = 64,
>>                  .hwep_num_base  = 2,
>>                  .hwep_num       = 0, /* 2 or 3, will be set later */
> 
> Why not now?

It's assigned dynamically at runtime, depending on RX or TX.

>>                  .lep            = 1,
>>                  .eptype         = EP_INT_TYPE,
> 
> Do you have any restrictions on these endpoints? I mean can you pick
> any endpoints for BULK/INT/ISO or have they been pre-defined by HW?

The latter, see LPC32xx user manual, 14.1.2.

Roland
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