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/* Copyright 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "pmu.h"
#include "task.h"
/*
* RC Trim constants
*/
#define RCTRIM_RESOLUTION (12)
#define RCTRIM_LOAD_VAL BIT(11)
#define RCTRIM_RANGE_MAX (7 * 7)
#define RCTRIM_RANGE_MIN (-8 * 7)
#define RCTRIM_RANGE (RCTRIM_RANGE_MAX - RCTRIM_RANGE_MIN + 1)
/*
* Enable peripheral clock
* @param perih Peripheral from @ref uint32_t
*/
void pmu_clock_en(uint32_t periph)
{
if (periph <= 31)
GR_PMU_PERICLKSET0 = BIT(periph);
else
GR_PMU_PERICLKSET1 = (1 << (periph - 32));
}
/*
* Disable peripheral clock
* @param perih Peripheral from @ref uint32_t
*/
void pmu_clock_dis(uint32_t periph)
{
if (periph <= 31)
GR_PMU_PERICLKCLR0 = BIT(periph);
else
GR_PMU_PERICLKCLR1 = (1 << (periph - 32));
}
/*
* Peripheral reset
* @param periph Peripheral from @ref uint32_t
*/
void pmu_peripheral_rst(uint32_t periph)
{
/* Reset high */
if (periph <= 31)
GR_PMU_RST0 = 1 << periph;
else
GR_PMU_RST1 = 1 << (periph - 32);
}
/*
* enable clock doubler for USB purposes
*/
void pmu_enable_clock_doubler(void)
{
}
/*
* Switch system clock to XO
* @returns The value of XO_OSC_XTL_FSM_STATUS. 0 = okay, 1 = error.
*/
uint32_t pmu_clock_switch_xo(void)
{
return 0;
}
/*
* Enter sleep mode and handle exiting from sleep mode
* @warning The CPU must be in RC no trim mode before calling this function
*/
void pmu_sleep(void)
{
}
/*
* Exit hibernate mode
* This function should be called after a powerdown exit event.
* It handles turning the power domains back on.
* Clocks will be left in RC no trim.
*/
void pmu_hibernate_exit(void)
{
}
/*
* Enter powerdown mode
* This function does not return. The powerdown exit event will
* cause the CPU to begin executing the system / app bootloader.
* @warning The CPU must be in RC no trim mode
*/
void pmu_powerdown(void)
{
}
/*
* Exit powerdown mode
* This function should be called after a powerdown exit event.
* It handles turning the power domains back on.
* Clocks will be left in RC no trim.
*/
void pmu_powerdown_exit(void)
{
}
/**
* Handle PMU interrupt
*/
void pmu_interrupt(void)
{
/* TBD */
}
/* DECLARE_IRQ(GC_IRQNUM_PMU_PMUINT, pmu_interrupt, 1); */
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