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/* Copyright (c) 2012 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.
*/
/* Clocks and power management settings */
#ifndef __CROS_EC_CLOCK_H
#define __CROS_EC_CLOCK_H
#include "common.h"
/**
* Set the CPU clocks and PLLs.
*/
int clock_init(void);
/**
* Return the current clock frequency in Hz.
*/
int clock_get_freq(void);
/**
* Enable or disable the PLL.
*
* @param enable Enable PLL if non-zero; disable if zero.
* @param notify Notify other modules of the PLL change. This should
* be 1 unless you're briefly turning on the PLL to work
* around a chip errata at init time.
*/
int clock_enable_pll(int enable, int notify);
/**
* Wait for a number of clock cycles.
*
* Simple busy waiting for use before clocks/timers are initialized.
*
* @param cycles Number of cycles to wait.
*/
void clock_wait_cycles(uint32_t cycles);
/* Low power modes for idle API */
enum {
SLEEP_MASK_AP_RUN = (1 << 0), /* the main CPU is running */
SLEEP_MASK_UART = (1 << 1), /* UART communication on-going */
SLEEP_MASK_I2C = (1 << 2), /* I2C master communication on-going */
SLEEP_MASK_CHARGING = (1 << 3), /* Charging loop on-going */
SLEEP_MASK_FORCE = (1 << 31), /* Force disabling low power modes */
};
void enable_sleep(uint32_t mask);
void disable_sleep(uint32_t mask);
#endif /* __CROS_EC_CLOCK_H */
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