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dwc2/host: immediately retry IN token for bInterval=1

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Signed-off-by: Maxime Vincent <maxime@veemax.be>
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Maxime Vincent
2025-04-10 10:29:45 +02:00
parent bfe08176e5
commit 384e191fdc
1 changed files with 8 additions and 0 deletions
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8
src/portable/synopsys/dwc2/hcd_dwc2.c
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@@ -736,6 +736,14 @@ static void channel_xfer_in_retry(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hci
}
}
// immediately retry if bInterval is 1 - otherwise we'd waste a microframe before retrying
if ((hcint & HCINT_HALTED) && (edpt->uframe_interval == 1)) {
edpt->hcchar_bm.odd_frame = 1 - (dwc2->hfnum & 1); // transfer on next frame
channel->hcchar = (edpt->hcchar & ~HCCHAR_CHENA);
channel_send_in_token(dwc2, channel);
return;
}
// for periodic, de-allocate channel, enable SOF set frame counter for later transfer
const dwc2_channel_tsize_t hctsiz = {.value = channel->hctsiz};
edpt->next_pid = hctsiz.pid; // save PID