/* * This file is part of the depthcharge project. * * Copyright (C) 2014 The Linux Foundation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <libpayload.h> /* * TODO(vbendeb): reverted this hack once proper timer code is in place (see * http://crosbug.com/p/28880 for details. */ #define MIN_TIMER_FREQ 1000000 uint64_t timer_hz(void) { return (CONFIG_LP_IPQ806X_TIMER_FREQ >= MIN_TIMER_FREQ) ? CONFIG_LP_IPQ806X_TIMER_FREQ : MIN_TIMER_FREQ; } uint64_t timer_raw_value(void) { uint64_t rawv = readl((void *)CONFIG_LP_IPQ806X_TIMER_REG); /* * This is extremely crude, but it kicks in only for the case when the * timer clock frequency is below 1MHz, which should never be the case * on a properly configured system. The compiler will eliminate the * check as long as config value exceeds 1MHz. */ if (CONFIG_LP_IPQ806X_TIMER_FREQ < MIN_TIMER_FREQ) rawv *= (MIN_TIMER_FREQ / CONFIG_LP_IPQ806X_TIMER_FREQ); return rawv; }