| Maurus Cuelenaere | ac67d70 | 2008-05-16 21:16:01 +0000 | [diff] [blame] | 1 | /***************************************************************************
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| 2 | * __________ __ ___.
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| 3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___
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| 4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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| 5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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| 6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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| 7 | * \/ \/ \/ \/ \/
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| 8 | * $Id$
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| 9 | *
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| 10 | * Copyright (C) 2008 by Maurus Cuelenaere
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| 11 | *
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| Daniel Stenberg | 2acc0ac | 2008-06-28 18:10:04 +0000 | [diff] [blame^] | 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License |
| 14 | * as published by the Free Software Foundation; either version 2 |
| 15 | * of the License, or (at your option) any later version. |
| Maurus Cuelenaere | ac67d70 | 2008-05-16 21:16:01 +0000 | [diff] [blame] | 16 | *
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| 17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 18 | * KIND, either express or implied.
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| 19 | *
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| 20 | ****************************************************************************/
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| 21 |
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| 22 | #include "audio.h"
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| 23 | #include "registers.h"
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| 24 |
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| 25 | /* based on http://archopen.svn.sourceforge.net/viewvc/archopen/ArchOpen/trunk/libdsp/aic23.c?revision=213&view=markup */
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| 26 | void audiohw_init(void)
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| 27 | {
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| 28 | /* port config */
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| 29 | #if 0
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| 30 | SPCR10 = 0; /* DLB = 0 ** RJUST = 0 ** CLKSTP = 0 ** DXENA = 0 ** ABIS = 0 ** RINTM = 0 ** RSYNCER = 0 ** RFULL = 0 ** RRDY = 0 ** RRST = 0 */
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| 31 | SPCR20 = (1 << 9); /* FREE = 1 ** SOFT = 0 ** FRST = 0 ** GRST = 0 ** XINTM = 0 ** XSYNCER = 0 ** XEMPTY = 0 ** XRDY = 0 ** XRST = 0 */
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| 32 | RCR10 = (1 << 8) | (2 << 5); /* RFRLEN1 = 1 ** RWDLEN1 = 2 */
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| 33 | RCR20 = 0; /* RPHASE = 0 ** RFRLEN2 = 0 ** RWDLEN2 = 0 ** RCOMPAND = 0 ** RFIG = 0 ** RDATDLY = 0 */
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| 34 | XCR10 = (1 << 8) | (2 << 5); /* XFRLEN1 = 1 ** XWDLEN1 = 2 */
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| 35 | XCR20 = 0; /* XPHASE = 0 ** XFRLEN2 = 0 ** XWDLEN2 = 0 ** XCOMPAND = 0 ** XFIG = 0 ** XDATDLY = 0 */
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| 36 | SRGR10 = 0; /* FWID = 0 ** CLKGDV = 0 */
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| 37 | SRGR20 = 0; /* FREE = 0 ** CLKSP = 0 ** CLKSM = 0 ** FSGM = 0 ** FPER = 0 */
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| 38 | PCR0 = (1 << 1) | 1; /* IDLEEN = 0 ** XIOEN = 0 ** RIOEN = 0 ** FSXM = 0 ** FSRM = 0 ** SCLKME = 0 ** CLKSSTAT = 0 ** DXSTAT = 0 ** DRSTAT = 0 ** CLKXM = 0 ** CLKRM = 0 ** FSXP = 0 ** FSRP = 0 ** CLKXP = 1 ** CLKRP = 1 */
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| 39 | #else
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| 40 | SPCR10 = 0;
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| 41 | SPCR20 = 0x0200; /* SPCR : free running mode */
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| 42 |
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| 43 | RCR10 = 0x00A0;
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| 44 | RCR20 = 0x00A1; /* RCR : 32 bit receive data length */
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| 45 |
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| 46 | XCR10 = 0x00A0;
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| 47 | XCR20 = 0x00A0; /* XCR : 32 bit transmit data length */
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| 48 |
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| 49 | SRGR10 = 0;
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| 50 | SRGR20 = 0x3000; /* SRGR 1 & 2 */
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| 51 |
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| 52 | PCR0 = 0x000E - 8; /* PCR : FSX, FSR active low, external FS/CLK source */
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| 53 | #endif
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| 54 | }
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| 55 |
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| 56 | void audiohw_postinit(void)
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| 57 | {
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| 58 | /* Trigger first XEVT0 */
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| 59 | SPCR20 |= 1;
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| 60 | }
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