1. 05 Feb, 2013 33 commits
  2. 01 Feb, 2013 1 commit
    • Alexandre Lissy's avatar
      [media] imon: fix Knob event interpretation issues on ARM · 24dec5da
      Alexandre Lissy authored
      Events for the iMon Knob pad where not correctly interpreted on ARM,
      resulting in buggy mouse movements (cursor going straight out of the
      screen), key pad only generating KEY_RIGHT and KEY_DOWN events.
      A reproducer is:
      int main(int argc, char ** argv)
      {
              char rel_x = 0x00; printf("rel_x:%d @%s:%d\n", rel_x, __FILE__, __LINE__);
              rel_x = 0x0f; printf("rel_x:%d @%s:%d\n", rel_x, __FILE__, __LINE__);
              rel_x |= ~0x0f; printf("rel_x:%d @%s:%d\n", rel_x, __FILE__, __LINE__);
              return 0;
      }
      (running on x86 or amd64)
      $ ./test
      rel_x:0 @test.c:6
      rel_x:15 @test.c:7
      rel_x:-1 @test.c:8
      (running on armv6)
      rel_x:0 @test.c:6
      rel_x:15 @test.c:7
      rel_x:255 @test.c:8
      Forcing the rel_x and rel_y variables as signed char fixes the issue.
      
      Reference: http://www.arm.linux.org.uk/docs/faqs/signedchar.phpSigned-off-by: default avatarAlexandre Lissy <alexandrelissy@free.fr>
      Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
      24dec5da
  3. 24 Jan, 2013 6 commits