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bth: Update driver to interface association changes

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Two interfaces that are required by Bluetooth Primary Controller
do not have IAD according to Bluetooth specification.
Those two interfaces were opened separately in process_set_config().

Later interface association was inferred for BTH (along with other
drivers), since then only one call to open() is place for BTH driver
that should prepare both interfaces at once.

To make it work again btd_open() parses two interfaces at once.
This commit is contained in:
Jerzy Kasenberg 2021-11-05 12:23:59 +01:00
parent c04006bc13
commit ec8ece2c9d
1 changed files with 58 additions and 54 deletions
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112
src/class/bth/bth_device.c
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@ -112,74 +112,78 @@ uint16_t btd_open(uint8_t rhport, tusb_desc_interface_t const *itf_desc, uint16_
TUD_BT_APP_SUBCLASS == itf_desc->bInterfaceSubClass &&
TUD_BT_PROTOCOL_PRIMARY_CONTROLLER == itf_desc->bInterfaceProtocol, 0);
// Distinguish interface by number of endpoints, as both interface have same class, subclass and protocol
if (itf_desc->bNumEndpoints == 3 && max_len >= hci_itf_size)
{
_btd_itf.itf_num = itf_desc->bInterfaceNumber;
TU_ASSERT(itf_desc->bNumEndpoints == 3 && max_len >= hci_itf_size);
desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(itf_desc);
_btd_itf.itf_num = itf_desc->bInterfaceNumber;
TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer, 0);
TU_ASSERT(usbd_edpt_open(rhport, desc_ep), 0);
_btd_itf.ep_ev = desc_ep->bEndpointAddress;
desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(itf_desc);
// Open endpoint pair
TU_ASSERT(usbd_open_edpt_pair(rhport, tu_desc_next(desc_ep), 2, TUSB_XFER_BULK, &_btd_itf.ep_acl_out,
&_btd_itf.ep_acl_in), 0);
TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer, 0);
TU_ASSERT(usbd_edpt_open(rhport, desc_ep), 0);
_btd_itf.ep_ev = desc_ep->bEndpointAddress;
// Prepare for incoming data from host
TU_ASSERT(usbd_edpt_xfer(rhport, _btd_itf.ep_acl_out, _btd_itf.epout_buf, CFG_TUD_BTH_DATA_EPSIZE), 0);
// Open endpoint pair
TU_ASSERT(usbd_open_edpt_pair(rhport, tu_desc_next(desc_ep), 2, TUSB_XFER_BULK, &_btd_itf.ep_acl_out,
&_btd_itf.ep_acl_in), 0);
drv_len = hci_itf_size;
}
else if (itf_desc->bNumEndpoints == 2 && max_len >= iso_alt_itf_size)
{
uint8_t dir;
itf_desc = (tusb_desc_interface_t const *)tu_desc_next(tu_desc_next(tu_desc_next(desc_ep)));
// Prepare for incoming data from host
TU_ASSERT(usbd_edpt_xfer(rhport, _btd_itf.ep_acl_out, _btd_itf.epout_buf, CFG_TUD_BTH_DATA_EPSIZE), 0);
drv_len = hci_itf_size;
// Ensure this is still BT Primary Controller
TU_ASSERT(TUSB_CLASS_WIRELESS_CONTROLLER == itf_desc->bInterfaceClass &&
TUD_BT_APP_SUBCLASS == itf_desc->bInterfaceSubClass &&
TUD_BT_PROTOCOL_PRIMARY_CONTROLLER == itf_desc->bInterfaceProtocol, 0);
TU_ASSERT(itf_desc->bNumEndpoints == 2 && max_len >= iso_alt_itf_size + drv_len);
uint8_t dir;
desc_ep = (tusb_desc_endpoint_t const *)tu_desc_next(itf_desc);
TU_ASSERT(itf_desc->bAlternateSetting < CFG_TUD_BTH_ISO_ALT_COUNT, 0);
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT, 0);
dir = tu_edpt_dir(desc_ep->bEndpointAddress);
_btd_itf.ep_voice[dir] = desc_ep->bEndpointAddress;
// Store endpoint size for alternative
_btd_itf.ep_voice_size[dir][itf_desc->bAlternateSetting] = (uint8_t) tu_edpt_packet_size(desc_ep);
desc_ep = (tusb_desc_endpoint_t const *)tu_desc_next(desc_ep);
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT, 0);
dir = tu_edpt_dir(desc_ep->bEndpointAddress);
_btd_itf.ep_voice[dir] = desc_ep->bEndpointAddress;
// Store endpoint size for alternative
_btd_itf.ep_voice_size[dir][itf_desc->bAlternateSetting] = (uint8_t) tu_edpt_packet_size(desc_ep);
drv_len += iso_alt_itf_size;
for (int i = 1; i < CFG_TUD_BTH_ISO_ALT_COUNT && drv_len + iso_alt_itf_size <= max_len; ++i) {
// Make sure rest of alternatives matches
itf_desc = (tusb_desc_interface_t const *)tu_desc_next(desc_ep);
if (itf_desc->bDescriptorType != TUSB_DESC_INTERFACE ||
TUSB_CLASS_WIRELESS_CONTROLLER != itf_desc->bInterfaceClass ||
TUD_BT_APP_SUBCLASS != itf_desc->bInterfaceSubClass ||
TUD_BT_PROTOCOL_PRIMARY_CONTROLLER != itf_desc->bInterfaceProtocol)
{
// Not an Iso interface instance
break;
}
TU_ASSERT(itf_desc->bAlternateSetting < CFG_TUD_BTH_ISO_ALT_COUNT, 0);
desc_ep = (tusb_desc_endpoint_t const *)tu_desc_next(itf_desc);
TU_ASSERT(itf_desc->bAlternateSetting < CFG_TUD_BTH_ISO_ALT_COUNT, 0);
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT, 0);
dir = tu_edpt_dir(desc_ep->bEndpointAddress);
_btd_itf.ep_voice[dir] = desc_ep->bEndpointAddress;
// Store endpoint size for alternative
// Verify that alternative endpoint are same as first ones
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT &&
_btd_itf.ep_voice[dir] == desc_ep->bEndpointAddress, 0);
_btd_itf.ep_voice_size[dir][itf_desc->bAlternateSetting] = (uint8_t) tu_edpt_packet_size(desc_ep);
desc_ep = (tusb_desc_endpoint_t const *)tu_desc_next(desc_ep);
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT, 0);
dir = tu_edpt_dir(desc_ep->bEndpointAddress);
_btd_itf.ep_voice[dir] = desc_ep->bEndpointAddress;
// Store endpoint size for alternative
// Verify that alternative endpoint are same as first ones
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT &&
_btd_itf.ep_voice[dir] == desc_ep->bEndpointAddress, 0);
_btd_itf.ep_voice_size[dir][itf_desc->bAlternateSetting] = (uint8_t) tu_edpt_packet_size(desc_ep);
drv_len += iso_alt_itf_size;
for (int i = 1; i < CFG_TUD_BTH_ISO_ALT_COUNT && drv_len + iso_alt_itf_size <= max_len; ++i) {
// Make sure rest of alternatives matches
itf_desc = (tusb_desc_interface_t const *)tu_desc_next(desc_ep);
if (itf_desc->bDescriptorType != TUSB_DESC_INTERFACE ||
TUSB_CLASS_WIRELESS_CONTROLLER != itf_desc->bInterfaceClass ||
TUD_BT_APP_SUBCLASS != itf_desc->bInterfaceSubClass ||
TUD_BT_PROTOCOL_PRIMARY_CONTROLLER != itf_desc->bInterfaceProtocol)
{
// Not an Iso interface instance
break;
}
TU_ASSERT(itf_desc->bAlternateSetting < CFG_TUD_BTH_ISO_ALT_COUNT, 0);
desc_ep = (tusb_desc_endpoint_t const *)tu_desc_next(itf_desc);
dir = tu_edpt_dir(desc_ep->bEndpointAddress);
// Verify that alternative endpoint are same as first ones
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT &&
_btd_itf.ep_voice[dir] == desc_ep->bEndpointAddress, 0);
_btd_itf.ep_voice_size[dir][itf_desc->bAlternateSetting] = (uint8_t) tu_edpt_packet_size(desc_ep);
desc_ep = (tusb_desc_endpoint_t const *)tu_desc_next(desc_ep);
dir = tu_edpt_dir(desc_ep->bEndpointAddress);
// Verify that alternative endpoint are same as first ones
TU_ASSERT(desc_ep->bDescriptorType == TUSB_DESC_ENDPOINT &&
_btd_itf.ep_voice[dir] == desc_ep->bEndpointAddress, 0);
_btd_itf.ep_voice_size[dir][itf_desc->bAlternateSetting] = (uint8_t) tu_edpt_packet_size(desc_ep);
drv_len += iso_alt_itf_size;
}
}
return drv_len;