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