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/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/cpu.h>
#include <linux/smp.h>
#include "acpuclock.h"
#include <trace/events/power.h>
static struct acpuclk_data *acpuclk_data;
unsigned long acpuclk_get_rate(int cpu)
{
if (!acpuclk_data || !acpuclk_data->get_rate)
return 0;
return acpuclk_data->get_rate(cpu);
}
int acpuclk_set_rate(int cpu, unsigned long rate, enum setrate_reason reason)
{
if (!acpuclk_data || !acpuclk_data->set_rate)
return 0;
return acpuclk_data->set_rate(cpu, rate, reason);
}
uint32_t acpuclk_get_switch_time(void)
{
if (!acpuclk_data)
return 0;
return acpuclk_data->switch_time_us;
}
unsigned long acpuclk_power_collapse(void)
{
unsigned long rate = acpuclk_get_rate(smp_processor_id());
acpuclk_set_rate(smp_processor_id(), acpuclk_data->power_collapse_khz,
SETRATE_PC);
return rate;
}
unsigned long acpuclk_wait_for_irq(void)
{
unsigned long rate = acpuclk_get_rate(smp_processor_id());
acpuclk_set_rate(smp_processor_id(), acpuclk_data->wait_for_irq_khz,
SETRATE_SWFI);
return rate;
}
void acpuclk_register(struct acpuclk_data *data)
{
acpuclk_data = data;
}
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