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atusb/fw/usb/: added support for bulk IN EP 1

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The code is quite special-cased. Some more changes will be necessary
for interrupt or OUT EPs.

- atu2.c (NUM_EPS): increased from 1 to 2
- atu2.c (ep_rx): send zero-length packet also for EPs != 0
- atu2.c (handle_ep): clear FIFOCON when sending data on EP != 0
- atu2.c (ep_init): configure EP 1 as bulk IN with size 64
- usb.c (NUM_EPS): we don't need to define NUM_EPS here
This commit is contained in:
Werner Almesberger 2011-06-20 14:34:08 -03:00
parent 3f74098ce2
commit 244e449131
2 changed files with 20 additions and 5 deletions
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23
atusb/fw/usb/atu2.c
View File

@ -40,7 +40,7 @@
#endif
#define NUM_EPS 1
#define NUM_EPS 2
struct ep_descr eps[NUM_EPS];
@ -112,7 +112,7 @@ static int ep_rx(struct ep_descr *ep)
ep->state = EP_IDLE;
if (ep->callback)
ep->callback(ep->user);
if (ep == &eps[0])
// if (ep == &eps[0])
usb_send(ep, NULL, 0, NULL, NULL);
}
return 1;
@ -137,6 +137,7 @@ static void ep_tx(struct ep_descr *ep)
static void handle_ep(int n)
{
struct ep_descr *ep = eps+n;
uint8_t mask;
UENUM = n;
if (UEINTX & (1 << RXSTPI)) {
@ -163,7 +164,10 @@ static void handle_ep(int n)
/* @@ EP_RX: cancel (?) */
if (ep->state == EP_TX) {
ep_tx(ep);
UEINTX = ~(1 << TXINI);
mask = 1 << TXINI;
if (n)
mask |= 1 << FIFOCON;
UEINTX = ~mask;
if (ep->state == EP_IDLE && ep->callback)
ep->callback(ep->user);
} else {
@ -194,6 +198,19 @@ static void ep_init(void)
eps[0].state = EP_IDLE;
eps[0].size = 64;
UENUM = 1;
UECONX = (1 << RSTDT) | (1 << EPEN); /* enable */
UECFG0X = (1 << EPTYPE1) | (1 << EPDIR); /* bulk IN */
UECFG1X = 3 << EPSIZE0; /* 64 bytes */
UECFG1X |= 1 << ALLOC;
while (!(UESTA0X & (1 << CFGOK)));
UEIENX = (1 << STALLEDE) | (1 << TXINE);
eps[1].state = EP_IDLE;
eps[1].size = 64;
}

2
atusb/fw/usb/usb.c
View File

@ -26,8 +26,6 @@
#define NULL 0
#endif
#define NUM_EPS 1
#if 1
extern void panic(void);
#define BUG_ON(cond) do { if (cond) panic(); } while (0)