LXR linux/tools/testing/selftests/bpf/progs/test_lirc_mode2

   1// SPDX-License-Identifier: GPL-2.0
   2// test ir decoder
   3//
   4// Copyright (C) 2018 Sean Young <sean@mess.org>
   5
   6#include <linux/bpf.h>
   7#include <linux/lirc.h>
   8#include <bpf/bpf_helpers.h>
   9
  10SEC("lirc_mode2")
  11int bpf_decoder(unsigned int *sample)
  12{
  13        if (LIRC_IS_PULSE(*sample)) {
  14                unsigned int duration = LIRC_VALUE(*sample);
  15
  16                if (duration & 0x10000)
  17                        bpf_rc_keydown(sample, 0x40, duration & 0xffff, 0);
  18                if (duration & 0x20000)
  19                        bpf_rc_pointer_rel(sample, (duration >> 8) & 0xff,
  20                                           duration & 0xff);
  21        }
  22
  23        return 0;
  24}
  25
  26char _license[] SEC("license") = "GPL";
  27