clock.h

/**
 *  @file 
 *
 *  Header file for clocks in OiB
 *
 *  Contains clock initialisation and configuration functions and clock data
 *  structures.
 */

/*
 * clock.h
 *
 * Copyright 2011 iDroid Project
 *
 * This file is part of iDroid. An android distribution for Apple products.
 * For more information, please visit http://www.idroidproject.org/.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 * 
 * 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.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#ifndef CLOCK_H
#define CLOCK_H

#include "openiboot.h"
#include "hardware/clock.h"

typedef enum ClockDivisorCode {
	ClockDivisorCode0 = 0,
	ClockDivisorCode1 = 1,
	ClockDivisorCode2 = 2,
	ClockDivisorCode3 = 3
} ClockDivisorCode;

extern uint32_t ClockPLL;
extern uint32_t PLLFrequencies[NUM_PLL];
extern uint32_t CalculatedFrequencyTable[55];
extern uint32_t ClockSDiv;
extern uint32_t TicksPerSec;

typedef enum FrequencyBase {
	FrequencyBaseClock,
	FrequencyBaseMemory,
	FrequencyBaseBus,
	FrequencyBasePeripheral,
	FrequencyBaseUnknown,
	FrequencyBaseDisplay,
	FrequencyBaseFixed,
	FrequencyBaseTimebase,
	FrequencyBaseUsbPhy,
	FrequencyNand,
} FrequencyBase;

int clock_set_base_divisor(ClockDivisorCode code);
error_t clock_setup();

error_t clock_set_divisor(uint32_t _clock, uint32_t _div);
uint32_t clock_get_divisor(uint32_t _clock);

void clock_gate_switch(uint32_t gate, OnOff on_off);
void clock_gate_reset(uint32_t gate);

uint32_t clock_get_frequency(FrequencyBase freqBase);
void clock_set_sdiv(int sdiv);
unsigned int clock_get_base_frequency();
void set_CPU_clockconfig(uint32_t _mode);

#endif