hdmi_spd_infoframe_pack
err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer));
EXPORT_SYMBOL(hdmi_spd_infoframe_pack);
length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size);
ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer,