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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* PP502X and PP5002 I2C driver
*
* Based on code from the ipodlinux project - http://ipodlinux.org/
* Adapted for Rockbox in November 2005
*
* Original file: linux/arch/armnommu/mach-ipod/hardware.c
*
* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/*
* PortalPlayer i2c driver
*
*/
#ifndef _I2C_PP_H
#define _I2C_PP_H
#define I2C_CTRL (*(volatile unsigned char*)(I2C_BASE+0x00))
#define I2C_ADDR (*(volatile unsigned char*)(I2C_BASE+0x04))
#define I2C_DATA(X) (*(volatile unsigned char*)(I2C_BASE+0xc+(4*X)))
#define I2C_STATUS (*(volatile unsigned char*)(I2C_BASE+0x1c))
/* I2C_CTRL bit definitions */
#define I2C_SEND 0x80
/* I2C_STATUS bit definitions */
#define I2C_BUSY (1<<6)
/* TODO: Fully implement i2c driver */
/* To be used by drivers that need to do multiple i2c operations
atomically */
void i2c_lock(void);
void i2c_unlock(void);
void i2c_init(void);
int i2c_readbyte(unsigned int dev_addr, int addr);
int pp_i2c_send(unsigned int addr, int data0, int data1);
int i2c_readbytes(unsigned int dev_addr, int addr, int len, unsigned char *data);
int i2c_sendbytes(unsigned int dev_addr, int len, const unsigned char *data);
#endif
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