/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Portalplayer specific code for Wolfson audio codecs * * Based on code from the ipodlinux project - http://ipodlinux.org/ * Adapted for Rockbox in December 2005 * * Original file: linux/arch/armnommu/mach-ipod/audio.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. * ****************************************************************************/ #include "system.h" #include "audiohw.h" #include "i2c-pp.h" #include "wmcodec.h" #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB) || defined(MROBE_100) /* The H10's audio codec uses an I2C address of 0x1b */ #define I2C_AUDIO_ADDRESS 0x1b #else /* The iPod's audio codecs use an I2C address of 0x1a */ #define I2C_AUDIO_ADDRESS 0x1a #endif /* * Initialise the PP I2C and I2S. */ void audiohw_init(void) { #ifdef CPU_PP502x /* normal outputs for CDI and I2S pin groups */ DEV_INIT2 &= ~0x300; /*mini2?*/ DEV_INIT1 &=~0x3000000; /*mini2?*/ /* I2S device reset */ DEV_RS |= DEV_I2S; DEV_RS &=~DEV_I2S; /* I2S device enable */ DEV_EN |= DEV_I2S; /* enable external dev clock clocks */ DEV_EN |= DEV_EXTCLOCKS; /* external dev clock to 24MHz */ outl(inl(0x70000018) & ~0xc, 0x70000018); #else /* device reset */ outl(inl(0xcf005030) | 0x80, 0xcf005030); outl(inl(0xcf005030) & ~0x80, 0xcf005030); /* device enable */ outl(inl(0xcf005000) | 0x80, 0xcf005000); /* GPIO D06 enable for output */ outl(inl(0xcf00000c) | 0x40, 0xcf00000c); outl(inl(0xcf00001c) & ~0x40, 0xcf00001c); #ifdef IPOD_1G2G /* bits 11,10 == 10 */ outl(inl(0xcf004040) & ~0x400, 0xcf004040); outl(inl(0xcf004040) | 0x800, 0xcf004040); #else /* IPOD_3G */ /* bits 11,10 == 01 */ outl(inl(0xcf004040) | 0x400, 0xcf004040); outl(inl(0xcf004040) & ~0x800, 0xcf004040); outl(inl(0xcf004048) & ~0x1, 0xcf004048); outl(inl(0xcf000004) & ~0xf, 0xcf000004); outl(inl(0xcf004044) & ~0xf, 0xcf004044); /* C03 = 0 */ outl(inl(0xcf000008) | 0x8, 0xcf000008); outl(inl(0xcf000018) | 0x8, 0xcf000018); outl(inl(0xcf000028) & ~0x8, 0xcf000028); #endif /* IPOD_1G2G/3G */ #endif #if defined(HAVE_WM8731) || defined(HAVE_WM8751) || defined(HAVE_WM8975) \ || defined(HAVE_WM8758) audiohw_preinit(); #endif } #if !defined(HAVE_WM8731) && !defined(HAVE_WM8751) && !defined(HAVE_WM8975) \ && !defined(HAVE_WM8758) void audiohw_postinit(void) { } #endif void wmcodec_write(int reg, int data) { pp_i2c_send(I2C_AUDIO_ADDRESS, (reg<<1) | ((data&0x100)>>8),data&0xff); }