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minor clean up

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This commit is contained in:
hathach 2021-08-20 19:39:33 +07:00
parent 22a5b1608c
commit beb1a5c678
1 changed files with 18 additions and 12 deletions
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30
src/device/usbd.c
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@ -856,12 +856,12 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
while( p_desc < desc_end )
{
tusb_desc_interface_assoc_t const * desc_itf_assoc = NULL;
tusb_desc_interface_assoc_t const * desc_iad = NULL;
// Class will always starts with Interface Association (if any) and then Interface descriptor
if ( TUSB_DESC_INTERFACE_ASSOCIATION == tu_desc_type(p_desc) )
{
desc_itf_assoc = (tusb_desc_interface_assoc_t const *) p_desc;
desc_iad = (tusb_desc_interface_assoc_t const *) p_desc;
p_desc = tu_desc_next(p_desc); // next to Interface
}
@ -870,6 +870,13 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
tusb_desc_interface_t const * desc_itf = (tusb_desc_interface_t const*) p_desc;
uint16_t const remaining_len = desc_end-p_desc;
// Interface number must not be used already
TU_ASSERT(DRVID_INVALID == _usbd_dev.itf2drv[desc_itf->bInterfaceNumber]);
// TODO usbd can calculate the total length used for driver --> driver open() does not need to calculate it
// uint16_t const drv_len = tu_desc_get_interface_total_len(desc_itf, desc_iad ? desc_iad->bInterfaceCount : 1, desc_end-p_desc);
// Find driver for this interface
uint8_t drv_id;
for (drv_id = 0; drv_id < TOTAL_DRIVER_COUNT; drv_id++)
{
@ -881,31 +888,30 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
// Open successfully, check if length is correct
TU_ASSERT( sizeof(tusb_desc_interface_t) <= drv_len && drv_len <= remaining_len);
// Interface number must not be used already
TU_ASSERT(DRVID_INVALID == _usbd_dev.itf2drv[desc_itf->bInterfaceNumber]);
TU_LOG2(" %s opened\r\n", driver->name);
// bind interface to found driver
_usbd_dev.itf2drv[desc_itf->bInterfaceNumber] = drv_id;
// If IAD exist, assign all interfaces to the same driver
if (desc_itf_assoc)
// If using IAD, bind all interfaces to the same driver
if (desc_iad)
{
// IAD's first interface number and class should match with opened interface
TU_ASSERT(desc_itf_assoc->bFirstInterface == desc_itf->bInterfaceNumber &&
desc_itf_assoc->bFunctionClass == desc_itf->bInterfaceClass);
TU_ASSERT(desc_iad->bFirstInterface == desc_itf->bInterfaceNumber &&
desc_iad->bFunctionClass == desc_itf->bInterfaceClass);
for(uint8_t i=1; i<desc_itf_assoc->bInterfaceCount; i++)
for(uint8_t i=1; i<desc_iad->bInterfaceCount; i++)
{
_usbd_dev.itf2drv[desc_itf->bInterfaceNumber+i] = drv_id;
}
}
// bind all endpoints for this driver
// bind all endpoints to found driver
tu_edpt_bind_driver(_usbd_dev.ep2drv, desc_itf, drv_len, drv_id);
p_desc += drv_len; // next interface
break;
break; // exit driver find loop
}
}