ea0bdf2d54
Some IN transfers must be terminated by an empty packet because otherwise the host wouldn't know. The zlp() function determines this requirement in accordance to USB rules: If the transfer's size is aligned to the maximum packet size, and the host expects a larger transfer, add the empty packet as a hint. BRANCH=none BUG=none TEST=USB device mode still works Change-Id: Ia69f3d017f72a3a0e0b21bac72fe97be184c7daa Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: fd0e946e4948a74a9ed15a5eed6ce827b7672a56 Original-Change-Id: I8153cc5bd2ff1c88e383c1dbcddaf1bf72f9194c Original-Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/250790 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9784 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> |
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| chipidea.h | ||
| udc.h | ||