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remove the requirement of std SET/CLEAR_FEATURE must not return zlp status

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hathach
2021-02-11 11:22:02 +07:00
parent ba11bb2b80
commit 49bc97b0ca
2 changed files with 46 additions and 47 deletions
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75
src/device/usbd.c
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@@ -485,6 +485,12 @@ void tud_task (void)
// But it is easier to set it every time instead of wasting time to check then set
_usbd_dev.connected = 1;
// mark both in & out control as free
_usbd_dev.ep_status[0][TUSB_DIR_OUT].busy = false;
_usbd_dev.ep_status[0][TUSB_DIR_OUT].claimed = 0;
_usbd_dev.ep_status[0][TUSB_DIR_IN ].busy = false;
_usbd_dev.ep_status[0][TUSB_DIR_IN ].claimed = 0;
// Process control request
if ( !process_control_request(event.rhport, &event.setup_received) )
{
@@ -605,6 +611,7 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
// forward to class driver: "non-STD request to Interface"
return invoke_class_control(rhport, driver, p_request);
}
if ( TUSB_REQ_TYPE_STANDARD != p_request->bmRequestType_bit.type )
{
// Non standard request is not supported
@@ -712,14 +719,17 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
TU_ASSERT(ep_num < TU_ARRAY_SIZE(_usbd_dev.ep2drv) );
bool ret = false;
usbd_class_driver_t const * driver = get_driver(_usbd_dev.ep2drv[ep_num][ep_dir]);
// Handle STD request to endpoint
if ( TUSB_REQ_TYPE_STANDARD == p_request->bmRequestType_bit.type )
if ( TUSB_REQ_TYPE_STANDARD != p_request->bmRequestType_bit.type )
{
// force return true for standard request
ret = true;
// Forward class request to its driver
TU_VERIFY(driver);
return invoke_class_control(rhport, driver, p_request);
}
else
{
// Handle STD request to endpoint
switch ( p_request->bRequest )
{
case TUSB_REQ_GET_STATUS:
@@ -730,40 +740,39 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
break;
case TUSB_REQ_CLEAR_FEATURE:
if ( TUSB_REQ_FEATURE_EDPT_HALT == p_request->wValue ) usbd_edpt_clear_stall(rhport, ep_addr);
tud_control_status(rhport, p_request);
break;
case TUSB_REQ_SET_FEATURE:
if ( TUSB_REQ_FEATURE_EDPT_HALT == p_request->wValue ) usbd_edpt_stall(rhport, ep_addr);
tud_control_status(rhport, p_request);
{
if ( TUSB_REQ_FEATURE_EDPT_HALT == p_request->wValue )
{
if ( TUSB_REQ_CLEAR_FEATURE == p_request->bRequest )
{
usbd_edpt_clear_stall(rhport, ep_addr);
}else
{
usbd_edpt_stall(rhport, ep_addr);
}
}
if (driver)
{
// Some classes such as USBTMC needs to clear/re-init its buffer when receiving CLEAR_FEATURE request
// We will also forward std request targeted endpoint to class drivers as well
// STD request must always be ACKed regardless of driver returned value
// Also clear complete callback if driver set since it can also stall the request.
(void) invoke_class_control(rhport, driver, p_request);
usbd_control_set_complete_callback(NULL);
// skip ZLP status if driver already did that
if ( !_usbd_dev.ep_status[0][TUSB_DIR_IN].busy ) tud_control_status(rhport, p_request);
}
}
break;
// Unknown/Unsupported request
default: TU_BREAKPOINT(); return false;
}
}
usbd_class_driver_t const * driver = get_driver(_usbd_dev.ep2drv[ep_num][ep_dir]);
if (driver)
{
// Some classes such as USBTMC needs to clear/re-init its buffer when receiving CLEAR_FEATURE request
// We will forward all request targeted endpoint to class drivers after
// - For class-type requests: driver is fully responsible to reply to host
// - For std-type requests : driver init/re-init internal variable/buffer only, and
// must not call tud_control_status(), driver's return value will have no effect.
// EP state has already affected (stalled/cleared)
if ( invoke_class_control(rhport, driver, p_request) ) ret = true;
}
if ( TUSB_REQ_TYPE_STANDARD == p_request->bmRequestType_bit.type )
{
// Set complete callback = NULL since it can also stall the request.
usbd_control_set_complete_callback(NULL);
}
return ret;
}
break;