dbe5213b11
* MI sys/dev/ic/{am7930.c,am7930var.h} chipset driver
* sparc frontend.
Presere revision history (this time).
TODO: bus.h'ify, and padded register mappings.
376 lines
9.7 KiB
C
376 lines
9.7 KiB
C
/* $NetBSD: am7930.c,v 1.39 1998/06/24 11:09:23 jonathan Exp $ */
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/*
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* Copyright (c) 1995 Rolf Grossmann
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Rolf Grossmann.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Front-end attachment independent layer for AMD 79c30
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* audio driver. XXX isdn support??
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*/
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#include "audio.h"
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#if NAUDIO > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <machine/bus.h>
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <sys/audioio.h>
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#include <dev/audio_if.h>
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#include <dev/ic/am7930reg.h>
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#include <dev/ic/am7930var.h>
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#define AUDIO_ROM_NAME "audio"
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#ifdef AUDIO_DEBUG
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extern void Dprintf __P((const char *, ...));
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int am7930debug = 0;
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#define DPRINTF(x) if (am7930debug) Dprintf x
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#else
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#define DPRINTF(x)
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#endif
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/* forward declarations */
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static void init_amd __P((volatile struct am7930 *));
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/*
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* Audio device descriptor (attachment independent)
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*/
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struct audio_device am7930_device = {
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"amd7930",
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"x",
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"audioamd"
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};
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/* The following tables stolen from former (4.4Lite's) sys/sparc/bsd_audio.c */
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/*
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* gx, gr & stg gains. this table must contain 256 elements with
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* the 0th being "infinity" (the magic value 9008). The remaining
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* elements match sun's gain curve (but with higher resolution):
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* -18 to 0dB in .16dB steps then 0 to 12dB in .08dB steps.
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*/
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static const u_short gx_coeff[256] = {
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0x9008, 0x8e7c, 0x8e51, 0x8e45, 0x8d42, 0x8d3b, 0x8c36, 0x8c33,
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0x8b32, 0x8b2a, 0x8b2b, 0x8b2c, 0x8b25, 0x8b23, 0x8b22, 0x8b22,
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0x9122, 0x8b1a, 0x8aa3, 0x8aa3, 0x8b1c, 0x8aa6, 0x912d, 0x912b,
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0x8aab, 0x8b12, 0x8aaa, 0x8ab2, 0x9132, 0x8ab4, 0x913c, 0x8abb,
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0x9142, 0x9144, 0x9151, 0x8ad5, 0x8aeb, 0x8a79, 0x8a5a, 0x8a4a,
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0x8b03, 0x91c2, 0x91bb, 0x8a3f, 0x8a33, 0x91b2, 0x9212, 0x9213,
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0x8a2c, 0x921d, 0x8a23, 0x921a, 0x9222, 0x9223, 0x922d, 0x9231,
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0x9234, 0x9242, 0x925b, 0x92dd, 0x92c1, 0x92b3, 0x92ab, 0x92a4,
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0x92a2, 0x932b, 0x9341, 0x93d3, 0x93b2, 0x93a2, 0x943c, 0x94b2,
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0x953a, 0x9653, 0x9782, 0x9e21, 0x9d23, 0x9cd2, 0x9c23, 0x9baa,
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0x9bde, 0x9b33, 0x9b22, 0x9b1d, 0x9ab2, 0xa142, 0xa1e5, 0x9a3b,
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0xa213, 0xa1a2, 0xa231, 0xa2eb, 0xa313, 0xa334, 0xa421, 0xa54b,
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0xada4, 0xac23, 0xab3b, 0xaaab, 0xaa5c, 0xb1a3, 0xb2ca, 0xb3bd,
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0xbe24, 0xbb2b, 0xba33, 0xc32b, 0xcb5a, 0xd2a2, 0xe31d, 0x0808,
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0x72ba, 0x62c2, 0x5c32, 0x52db, 0x513e, 0x4cce, 0x43b2, 0x4243,
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0x41b4, 0x3b12, 0x3bc3, 0x3df2, 0x34bd, 0x3334, 0x32c2, 0x3224,
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0x31aa, 0x2a7b, 0x2aaa, 0x2b23, 0x2bba, 0x2c42, 0x2e23, 0x25bb,
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0x242b, 0x240f, 0x231a, 0x22bb, 0x2241, 0x2223, 0x221f, 0x1a33,
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0x1a4a, 0x1acd, 0x2132, 0x1b1b, 0x1b2c, 0x1b62, 0x1c12, 0x1c32,
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0x1d1b, 0x1e71, 0x16b1, 0x1522, 0x1434, 0x1412, 0x1352, 0x1323,
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0x1315, 0x12bc, 0x127a, 0x1235, 0x1226, 0x11a2, 0x1216, 0x0a2a,
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0x11bc, 0x11d1, 0x1163, 0x0ac2, 0x0ab2, 0x0aab, 0x0b1b, 0x0b23,
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0x0b33, 0x0c0f, 0x0bb3, 0x0c1b, 0x0c3e, 0x0cb1, 0x0d4c, 0x0ec1,
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0x079a, 0x0614, 0x0521, 0x047c, 0x0422, 0x03b1, 0x03e3, 0x0333,
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0x0322, 0x031c, 0x02aa, 0x02ba, 0x02f2, 0x0242, 0x0232, 0x0227,
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0x0222, 0x021b, 0x01ad, 0x0212, 0x01b2, 0x01bb, 0x01cb, 0x01f6,
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0x0152, 0x013a, 0x0133, 0x0131, 0x012c, 0x0123, 0x0122, 0x00a2,
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0x011b, 0x011e, 0x0114, 0x00b1, 0x00aa, 0x00b3, 0x00bd, 0x00ba,
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0x00c5, 0x00d3, 0x00f3, 0x0062, 0x0051, 0x0042, 0x003b, 0x0033,
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0x0032, 0x002a, 0x002c, 0x0025, 0x0023, 0x0022, 0x001a, 0x0021,
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0x001b, 0x001b, 0x001d, 0x0015, 0x0013, 0x0013, 0x0012, 0x0012,
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0x000a, 0x000a, 0x0011, 0x0011, 0x000b, 0x000b, 0x000c, 0x000e,
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};
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/*
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* second stage play gain.
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*/
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static const u_short ger_coeff[] = {
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0x431f, /* 5. dB */
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0x331f, /* 5.5 dB */
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0x40dd, /* 6. dB */
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0x11dd, /* 6.5 dB */
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0x440f, /* 7. dB */
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0x411f, /* 7.5 dB */
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0x311f, /* 8. dB */
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0x5520, /* 8.5 dB */
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0x10dd, /* 9. dB */
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0x4211, /* 9.5 dB */
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0x410f, /* 10. dB */
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0x111f, /* 10.5 dB */
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0x600b, /* 11. dB */
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0x00dd, /* 11.5 dB */
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0x4210, /* 12. dB */
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0x110f, /* 13. dB */
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0x7200, /* 14. dB */
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0x2110, /* 15. dB */
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0x2200, /* 15.9 dB */
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0x000b, /* 16.9 dB */
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0x000f /* 18. dB */
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#define NGER (sizeof(ger_coeff) / sizeof(ger_coeff[0]))
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};
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/*
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* Reset chip and set boot-time softc defaults.
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*/
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void
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am7930_init(sc)
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struct am7930_softc *sc;
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{
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sc->sc_map.mr_mmr1 = AMD_MMR1_GX | AMD_MMR1_GER |
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AMD_MMR1_GR | AMD_MMR1_STG;
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/* set boot defaults */
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sc->sc_rlevel = 128;
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sc->sc_plevel = 128;
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sc->sc_mlevel = 0;
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sc->sc_out_port = SUNAUDIO_SPEAKER;
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init_amd(sc->sc_amd);
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}
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static void
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init_amd(amd)
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register volatile struct am7930 *amd;
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{
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/* disable interrupts */
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amd->cr = AMDR_INIT;
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amd->dr = AMD_INIT_PMS_ACTIVE | AMD_INIT_INT_DISABLE;
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/*
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* Initialize the mux unit. We use MCR3 to route audio (MAP)
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* through channel Bb. MCR1 and MCR2 are unused.
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* Setting the INT enable bit in MCR4 will generate an interrupt
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* on each converted audio sample.
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*/
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amd->cr = AMDR_MUX_1_4;
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amd->dr = 0;
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amd->dr = 0;
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amd->dr = (AMD_MCRCHAN_BB << 4) | AMD_MCRCHAN_BA;
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amd->dr = AMD_MCR4_INT_ENABLE;
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}
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int
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am7930_open(addr, flags)
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void *addr;
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int flags;
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{
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struct am7930_softc *sc = addr;
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DPRINTF(("sa_open: unit %p\n", sc));
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if (sc->sc_open)
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return (EBUSY);
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sc->sc_open = 1;
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sc->sc_locked = 0;
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/* tell attach layer about open */
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sc->sc_onopen(sc);
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DPRINTF(("saopen: ok -> sc=0x%x\n",sc));
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return (0);
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}
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void
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am7930_close(addr)
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void *addr;
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{
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register struct am7930_softc *sc = addr;
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DPRINTF(("sa_close: sc=0x%x\n", sc));
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/*
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* halt i/o, clear open flag, and done.
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*/
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sc->sc_onclose(sc);
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sc->sc_open = 0;
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DPRINTF(("sa_close: closed.\n"));
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}
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int
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am7930_set_params(addr, setmode, usemode, p, r)
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void *addr;
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int setmode, usemode;
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struct audio_params *p, *r;
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{
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if (p->sample_rate < 7500 || p->sample_rate > 8500 ||
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p->encoding != AUDIO_ENCODING_ULAW ||
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p->precision != 8 ||
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p->channels != 1)
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return EINVAL;
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p->sample_rate = 8000; /* no other sampling rates supported by amd chip */
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return 0;
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}
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int
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am7930_query_encoding(addr, fp)
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void *addr;
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struct audio_encoding *fp;
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{
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switch (fp->index) { /* ??? */
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case 0:
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strcpy(fp->name, AudioEmulaw);
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fp->encoding = AUDIO_ENCODING_ULAW;
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fp->precision = 8;
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fp->flags = 0;
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break;
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default:
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return(EINVAL);
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/*NOTREACHED*/
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}
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return(0);
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}
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int
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am7930_round_blocksize(addr, blk)
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void *addr;
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int blk;
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{
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return(blk);
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}
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int
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am7930_commit_settings(addr)
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void *addr;
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{
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register struct am7930_softc *sc = addr;
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register struct mapreg *map;
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register volatile struct am7930 *amd;
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register int s, level;
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DPRINTF(("sa_commit.\n"));
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map = &sc->sc_map;
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amd = sc->sc_amd;
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map->mr_gx = gx_coeff[sc->sc_rlevel];
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map->mr_stgr = gx_coeff[sc->sc_mlevel];
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level = (sc->sc_plevel * (256 + NGER)) >> 8;
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if (level >= 256) {
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map->mr_ger = ger_coeff[level - 256];
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map->mr_gr = gx_coeff[255];
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} else {
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map->mr_ger = ger_coeff[0];
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map->mr_gr = gx_coeff[level];
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}
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if (sc->sc_out_port == SUNAUDIO_SPEAKER)
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map->mr_mmr2 |= AMD_MMR2_LS;
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else
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map->mr_mmr2 &= ~AMD_MMR2_LS;
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s = splaudio();
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amd->cr = AMDR_MAP_MMR1;
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amd->dr = map->mr_mmr1;
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amd->cr = AMDR_MAP_GX;
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WAMD16(sc, amd, map->mr_gx);
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amd->cr = AMDR_MAP_STG;
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WAMD16(sc, amd, map->mr_stgr);
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amd->cr = AMDR_MAP_GR;
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WAMD16(sc, amd, map->mr_gr);
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amd->cr = AMDR_MAP_GER;
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WAMD16(sc, amd, map->mr_ger);
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amd->cr = AMDR_MAP_MMR2;
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amd->dr = map->mr_mmr2;
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splx(s);
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return(0);
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}
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int
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am7930_halt_output(addr)
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void *addr;
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{
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register struct am7930_softc *sc = addr;
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register volatile struct am7930 *amd = sc->sc_amd;
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/* XXX only halt, if input is also halted ?? */
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amd->cr = AMDR_INIT;
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amd->dr = AMD_INIT_PMS_ACTIVE | AMD_INIT_INT_DISABLE;
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sc->sc_locked = 0;
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return(0);
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}
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int
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am7930_halt_input(addr)
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void *addr;
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{
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register struct am7930_softc *sc = addr;
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register volatile struct am7930 *amd = sc->sc_amd;
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/* XXX only halt, if output is also halted ?? */
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amd->cr = AMDR_INIT;
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amd->dr = AMD_INIT_PMS_ACTIVE | AMD_INIT_INT_DISABLE;
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sc->sc_locked = 0;
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return(0);
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}
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int
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am7930_getdev(addr, retp)
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void *addr;
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struct audio_device *retp;
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{
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*retp = am7930_device;
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return 0;
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}
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/*
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* XXX chip is full-duplex, but really attach-dependent.
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* For now we know of no half-duplex attachments.
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*/
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int
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am7930_get_props(addr)
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void *addr;
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{
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return AUDIO_PROP_FULLDUPLEX;
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}
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#endif /* NAUDIO */
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