/* $OpenBSD: ics2101.c,v 1.6 2003/04/10 10:11:24 miod Exp $ */ /* $NetBSD: ics2101.c,v 1.6 1997/10/09 07:57:23 jtc Exp $ */ /*- * Copyright (c) 1996 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Ken Hornstein and John Kohl. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/errno.h> #include <sys/ioctl.h> #include <sys/syslog.h> #include <sys/device.h> #include <sys/proc.h> #include <sys/buf.h> #include <machine/cpu.h> #include <sys/audioio.h> #include <dev/audio_if.h> #include <dev/isa/isavar.h> #include <dev/isa/isadmavar.h> #include <dev/ic/ics2101reg.h> #include <dev/isa/ics2101var.h> #define ICS_VALUE 0x01 #define ICS_MUTE 0x02 #define ICS_MUTE_MUTED 0x04 /* convert from [AUDIO_MIN_GAIN,AUDIO_MAX_GAIN] (0,255) to [ICSMIX_MAX_ATTN,ICSMIX_MIN_ATTN] (0,127) */ #define cvt_value(val) ((val) >> 1) static void ics2101_mix_doit(struct ics2101_softc *, u_int, u_int, u_int, u_int); /* * Program one channel of the ICS mixer */ static void ics2101_mix_doit(sc, chan, side, value, flags) struct ics2101_softc *sc; u_int chan, side, value, flags; { bus_space_tag_t iot = sc->sc_iot; unsigned char flip_left[6] = {0x01, 0x01, 0x01, 0x02, 0x01, 0x02}; unsigned char flip_right[6] = {0x02, 0x02, 0x02, 0x01, 0x02, 0x01}; register unsigned char ctrl_addr; register unsigned char attn_addr; register unsigned char normal; int s; if (chan < ICSMIX_CHAN_0 || chan > ICSMIX_CHAN_5) return; if (side != ICSMIX_LEFT && side != ICSMIX_RIGHT) return; if (flags & ICS_MUTE) { value = cvt_value(sc->sc_setting[chan][side]); sc->sc_mute[chan][side] = flags & ICS_MUTE_MUTED; } else if (flags & ICS_VALUE) { sc->sc_setting[chan][side] = value; value = cvt_value(value); if (value > ICSMIX_MIN_ATTN) value = ICSMIX_MIN_ATTN; } else return; ctrl_addr = chan << 3; attn_addr = chan << 3; if (side == ICSMIX_LEFT) { ctrl_addr |= ICSMIX_CTRL_LEFT; attn_addr |= ICSMIX_ATTN_LEFT; if (sc->sc_mute[chan][side]) normal = 0x0; else if (sc->sc_flags & ICS_FLIP) normal = flip_left[chan]; else normal = 0x01; } else { ctrl_addr |= ICSMIX_CTRL_RIGHT; attn_addr |= ICSMIX_ATTN_RIGHT; if (sc->sc_mute[chan][side]) normal = 0x0; else if (sc->sc_flags & ICS_FLIP) normal = flip_right[chan]; else normal = 0x02; } s = splaudio(); bus_space_write_1(iot, sc->sc_selio_ioh, sc->sc_selio, ctrl_addr); bus_space_write_1(iot, sc->sc_dataio_ioh, sc->sc_dataio, normal); bus_space_write_1(iot, sc->sc_selio_ioh, sc->sc_selio, attn_addr); bus_space_write_1(iot, sc->sc_dataio_ioh, sc->sc_dataio, (unsigned char) value); splx(s); } void ics2101_mix_mute(sc, chan, side, domute) struct ics2101_softc *sc; unsigned int chan, side, domute; { ics2101_mix_doit(sc, chan, side, 0, domute ? ICS_MUTE|ICS_MUTE_MUTED : ICS_MUTE); } void ics2101_mix_attenuate(sc, chan, side, value) struct ics2101_softc *sc; unsigned int chan, side, value; { ics2101_mix_doit(sc, chan, side, value, ICS_VALUE); }