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The control endpoint (EP0) can receive some Setup packets that are specific to individual Interfaces. The USB_DECLARE_IFACE macro is used to register the callbacks that an interface implementation provides to handle those Setup packets. This change cleans up the callback API a bit, so that we don't have to export the internal workings of the Cr50's EP0 interrupt handler. BUG=chrome-os-partner:34893 BRANCH=none TEST=make buildall, manual Connect the Cr50 to my workstation via USB: * /bin/dmesg reports no errors * verify EP0 with lsusb -v -d 18d1:5014 * verify EP1 with './extra/usb_console -e 1 -p 5014' (reverses case of input text) * verify EP2 with the 'hid' command on the EC console (types a 'g') Change-Id: I9ac22f6a74f360f201c58e9ef39e3576834578a8 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/317269 Reviewed-by: Dominic Rizzo <domrizzo@google.com>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly