| /*************************************************************************** |
| * __________ __ ___. |
| * 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); |
| |
| #endif |