/* swr/swl are the left/right buttons. x-neg/y-neg are the x and y delta negative bits x-over/y-over are the x and y overflow bits  */
static int hgpk_validate_byte(unsigned char *packet)
/* swr/swl are the left/right buttons. x-neg/y-neg are the x and y delta negative bits x-over/y-over are the x and y overflow bits  */
static int hgpk_validate_byte(unsigned char *packet)
{
	return (packet[0] & 0x0C) != 0x08;
}