power.c

Windows CE 6.0 BSP for VOIP sample phone. Intel PXA270 platform.

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this sample source code is subject to the terms of the Microsoft
// license agreement under which you licensed this sample source code. If
// you did not accept the terms of the license agreement, you are not
// authorized to use this sample source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the LICENSE.RTF on your install media or the root of your tools installation.
// THE SAMPLE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES OR INDEMNITIES.
//

//  File:  power.c
//
//  PowerManager routines for the PLATO bootloader.
//
#include <windows.h>
#include <oal_kitl.h>
#include <oal_memory.h>
#include <plato.h>
#include "pcf50606.h"
#include "power_i2c.h"

#ifdef DEBUG
void DumpPMICStatus();
#endif

// Global variables
// 
extern BOOL g_fChargerInitialized;

//------------------------------------------------------------------------------
//
//  Function:  OALPowerInit
//
// Initialize the Power Manager IC (PMIC) to start the battery charger
// show status LEDs
//
BOOL OALPowerInit()
{
    UINT8 countdown = 15;
    UCHAR OOCStatus = 0;
    
    if (!PI2CInit())
    {
        KITLOutputDebugString("OALPowerInit: Failed to map hardware registers.\r\n");
        return FALSE;
    }

    // Check the presence of charger
    OOCStatus = ReadPI2CRegister(OOCS);
    if (OOCStatus & 0x20)
    {
        // Set WatchDog Reset timer to max (93 min)
        if (!WritePI2CRegister(MBCC2, 0x1F)) 
            return FALSE;

        // Set Charge Control Voltage (VCHGCON) to 4.2V
        if (!WritePI2CRegister(MBCC3, 0x1A)) 
            return FALSE;

        // Enable Charger, set AUTOFST and set charge mode to Fast (CCCV)
        if (!WritePI2CRegister(MBCC1, 0x0F)) 
            return FALSE;

        // Set LED modulator
        // Blinking pattern = Continuous ON, LED enabled when charger connected
        if (!WritePI2CRegister(LEDC1, 0x78)) 
            return FALSE;
        
        // Configure GPOC2 to output LED1 modulator on GPOOD0
        if (!WritePI2CRegister(GPOC2, 0x01)) 
            return FALSE;   

        g_fChargerInitialized = TRUE;
        KITLOutputDebugString("Power Manager initialized successfully.\r\n");
    }
    else
    {
        g_fChargerInitialized = FALSE;
    }

#ifdef DEBUG
    KITLOutputDebugString("OALPowerInit: Dumping PMIC status.\r\n");
    DumpPMICStatus();
#endif
    
    return TRUE;
}


#ifdef DEBUG
void DumpPMICStatus()
{
    KITLOutputDebugString("PCF50606: OOCS = 0x%x\r\n", ReadPI2CRegister(OOCS));
    KITLOutputDebugString("PCF50606: MBCS1 = 0x%x\r\n", ReadPI2CRegister(MBCS1));
    KITLOutputDebugString("PCF50606: MBCC1 = 0x%x\r\n", ReadPI2CRegister(MBCC1));
}
#endif