NetBSD/sys/dev/isa/ym.c

/* $NetBSD: ym.c,v 1.4 1998/08/17 21:16:15 augustss Exp $ */


/*
 * Copyright (c) 1998 Constantine Sapuntzakis. All rights reserved.
 * 
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/*
 *  Original code from OpenBSD.
 */


#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 <machine/intr.h>
#include <machine/bus.h>

#include <sys/audioio.h>
#include <dev/audio_if.h>

#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>

#include <dev/ic/ad1848reg.h>
#include <dev/isa/ad1848var.h>
#include <dev/ic/opl3sa3.h>
#include <dev/isa/ymvar.h>


int	ym_getdev __P((void *, struct audio_device *));
int	ym_mixer_set_port __P((void *, mixer_ctrl_t *));
int	ym_mixer_get_port __P((void *, mixer_ctrl_t *));
int	ym_query_devinfo __P((void *, mixer_devinfo_t *));

static void ym_mute __P((struct ym_softc *, int, int));
static void ym_set_master_gain __P((struct ym_softc *, struct ad1848_volume*));
static void ym_set_mic_gain __P((struct ym_softc *, struct ad1848_volume *));



struct audio_hw_if ym_hw_if = {
	ad1848_open,
	ad1848_close,
	NULL,
	ad1848_query_encoding,
	ad1848_set_params,
	ad1848_round_blocksize,
	ad1848_commit_settings,
	ad1848_dma_init_output,
	ad1848_dma_init_input,
	ad1848_dma_output,
	ad1848_dma_input,
	ad1848_halt_out_dma,
	ad1848_halt_in_dma,
	NULL,
	ym_getdev,
	NULL,
	ym_mixer_set_port,
	ym_mixer_get_port,
	ym_query_devinfo,
	ad1848_malloc,
	ad1848_free,
	ad1848_round,
	ad1848_mappage,
	ad1848_get_props,
};


struct audio_device ym_device = {
	"ym,ad1848",
	"",
	"ym"
};

static __inline int ym_read __P((struct ym_softc *, int));
static __inline void ym_write __P((struct ym_softc *, int, int));

void
ym_attach(sc)
	struct ym_softc *sc;
{
	struct ad1848_volume vol_mid = {220, 220};
	struct ad1848_volume vol_0   = {0, 0};
  
	sc->sc_ih = isa_intr_establish(sc->sc_ic, sc->ym_irq, IST_EDGE, 
				       IPL_AUDIO, ad1848_intr, &sc->sc_ad1848);

	ad1848_attach(&sc->sc_ad1848);
	printf("\n");
	sc->sc_ad1848.parent = sc;

	/* Establish chip in well known mode */
	ym_set_master_gain(sc, &vol_mid);
	ym_set_mic_gain(sc, &vol_0);
	sc->master_mute = 0;
	ym_mute(sc, SA3_LCH, sc->master_mute);
	ym_mute(sc, SA3_RCH, sc->master_mute);
	
	sc->mic_mute = 1;
	ym_mute(sc, SA3_MIC, sc->mic_mute);

	audio_attach_mi(&ym_hw_if, &sc->sc_ad1848, &sc->sc_dev);
}

static __inline int
ym_read(sc, reg)
	struct ym_softc *sc;
	int reg;
{
	bus_space_write_1(sc->sc_iot, sc->sc_controlioh, 0, 0x1d);
	bus_space_write_1(sc->sc_iot, sc->sc_controlioh, 0, (reg & 0xff));
	return (bus_space_read_1(sc->sc_iot, sc->sc_controlioh, 1));
}

static __inline void
ym_write(sc, reg, data)
	struct ym_softc *sc;
	int reg;
	int data;
{
	bus_space_write_1(sc->sc_iot, sc->sc_controlioh, 0, 0x1d);
	bus_space_write_1(sc->sc_iot, sc->sc_controlioh, 0, (reg & 0xff));
	bus_space_write_1(sc->sc_iot, sc->sc_controlioh, 1, (data & 0xff));
}



int
ym_getdev(addr, retp)
	void *addr;
	struct audio_device *retp;
{
	*retp = ym_device;
	return 0;
}


static ad1848_devmap_t mappings[] = {
	{ YM_MIDI_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
	{ YM_CD_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
	{ YM_DAC_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
	{ YM_LINE_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
	{ YM_SPEAKER_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
	{ YM_MONITOR_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
	{ YM_MIDI_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
	{ YM_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
	{ YM_DAC_MUTE, AD1848_KIND_MUTE, AD1848_DAC_CHANNEL },
	{ YM_LINE_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
	{ YM_SPEAKER_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
	{ YM_MONITOR_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
	{ YM_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
	{ YM_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1}
};

static int nummap = sizeof(mappings) / sizeof(mappings[0]);


static void
ym_mute(sc, left_reg, mute)
	struct ym_softc *sc;
	int left_reg;
	int mute;

{
	u_char reg;

	if (mute) {
		reg = ym_read(sc, left_reg);
		ym_write (sc, left_reg, reg | 0x80);
	} else {
		reg = ym_read(sc, left_reg);
		ym_write (sc, left_reg, reg & ~0x80);
	}
}

#define MIC_ATTEN_BITS 0x1f
#define MASTER_ATTEN_BITS 0x0f


static void
ym_set_master_gain(sc, vol)
	struct ym_softc *sc;
	struct ad1848_volume *vol;
{
	u_char reg;
	u_int  atten;
	
	sc->master_gain = *vol;
	
	atten = ((AUDIO_MAX_GAIN - vol->left) * MASTER_ATTEN_BITS) /
		AUDIO_MAX_GAIN;

	reg = ym_read(sc, SA3_LCH);

	reg &= ~(MASTER_ATTEN_BITS);
	reg |= atten;
	
	ym_write (sc, SA3_LCH, reg);
	
	atten = ((AUDIO_MAX_GAIN - vol->right) * MASTER_ATTEN_BITS) / 
		AUDIO_MAX_GAIN;
	
	reg = ym_read(sc, SA3_RCH) & ~(MASTER_ATTEN_BITS);
	reg |= atten;
	
	ym_write (sc, SA3_RCH, reg);
}

static void
ym_set_mic_gain(sc, vol)
	struct ym_softc *sc;
	struct ad1848_volume *vol;
{
	u_char reg;
	u_int  atten;
	
	sc->mic_gain = *vol;

	atten = ((AUDIO_MAX_GAIN - vol->left) * MIC_ATTEN_BITS)/AUDIO_MAX_GAIN;

	reg = ym_read(sc, SA3_MIC) & ~(MIC_ATTEN_BITS);
	reg |= atten;

	ym_write (sc, SA3_MIC, reg);
}

int
ym_mixer_set_port(addr, cp)
	void *addr;
	mixer_ctrl_t *cp;
{
	struct ad1848_softc *ac = addr;
	struct ym_softc *sc = ac->parent;
	struct ad1848_volume vol;
	int error = ad1848_mixer_set_port(ac, mappings, nummap, cp);
    
	if (error != ENXIO)
		return (error);

	error = 0;

	switch (cp->dev) {
	case YM_OUTPUT_LVL:
		ad1848_to_vol(cp, &vol);
		ym_set_master_gain(sc, &vol);
		break;

	case YM_OUTPUT_MUTE:
		sc->master_mute = (cp->un.ord != 0);
		ym_mute(sc, SA3_LCH, sc->master_mute);
		ym_mute(sc, SA3_RCH, sc->master_mute);
		break;

	case YM_MIC_LVL:
		if (cp->un.value.num_channels != 1)
			error = EINVAL;
		
		ad1848_to_vol(cp, &vol);
		ym_set_mic_gain(sc, &vol);      
		break;

	case YM_MIC_MUTE:
		sc->mic_mute = (cp->un.ord != 0);
		ym_mute(sc, SA3_MIC, sc->mic_mute);
		break;

	default:
		return ENXIO;
		/*NOTREACHED*/
	}
    
	return (error);
}

int
ym_mixer_get_port(addr, cp)
	void *addr;
	mixer_ctrl_t *cp;
{
	struct ad1848_softc *ac = addr;
	struct ym_softc *sc = ac->parent;
	
	int error = ad1848_mixer_get_port(ac, mappings, nummap, cp);
	
	if (error != ENXIO)
		return (error);
	
	error = 0;

	switch (cp->dev) {
	case YM_OUTPUT_LVL:
		ad1848_from_vol(cp, &sc->master_gain);
		break;
		
	case YM_OUTPUT_MUTE:
		cp->un.ord = sc->master_mute;
		break;
		
	case YM_MIC_LVL:
		if (cp->un.value.num_channels != 1)
			error = EINVAL;
		ad1848_from_vol(cp, &sc->mic_gain);
		break;
		
	case YM_MIC_MUTE:
		cp->un.ord = sc->mic_mute;
		break;
		
	default:
		error = ENXIO;
		break;
	}
	
	return(error);
}

static char *mixer_classes[] = 
	{ AudioCinputs, AudioCrecord, AudioCoutputs, AudioCmonitor };

int
ym_query_devinfo(addr, dip)
	void *addr;
	mixer_devinfo_t *dip;
{
	static char *mixer_port_names[] = 
	     { AudioNmidi, AudioNcd, AudioNdac, AudioNline, AudioNspeaker, 
	       AudioNmicrophone, AudioNmonitor};

	dip->next = dip->prev = AUDIO_MIXER_LAST;
	
	switch(dip->index) {
	case YM_INPUT_CLASS:			/* input class descriptor */
	case YM_OUTPUT_CLASS:
	case YM_MONITOR_CLASS:
	case YM_RECORD_CLASS:
		dip->type = AUDIO_MIXER_CLASS;
		dip->mixer_class = dip->index;
		strcpy(dip->label.name, 
		       mixer_classes[dip->index - YM_INPUT_CLASS]);
		break;
		
	case YM_MIDI_LVL:
	case YM_CD_LVL:
	case YM_DAC_LVL:
	case YM_LINE_LVL: 
	case YM_SPEAKER_LVL:
	case YM_MIC_LVL:
	case YM_MONITOR_LVL:
		dip->type = AUDIO_MIXER_VALUE;
		if (dip->index == YM_MONITOR_LVL)
			dip->mixer_class = YM_MONITOR_CLASS;
		else
			dip->mixer_class = YM_INPUT_CLASS;
		
		dip->next = dip->index + 7;
		
		strcpy(dip->label.name,
		       mixer_port_names[dip->index - YM_MIDI_LVL]);
		
		if (dip->index == YM_SPEAKER_LVL ||
		    dip->index == YM_MIC_LVL)
			dip->un.v.num_channels = 1;
		else
			dip->un.v.num_channels = 2;
		
		strcpy(dip->un.v.units.name, AudioNvolume);
		break;
		
	case YM_MIDI_MUTE:
	case YM_CD_MUTE:
	case YM_DAC_MUTE:
	case YM_LINE_MUTE:
	case YM_SPEAKER_MUTE:
	case YM_MIC_MUTE:
	case YM_MONITOR_MUTE:
		if (dip->index == YM_MONITOR_MUTE)
			dip->mixer_class = YM_MONITOR_CLASS;
		else
			dip->mixer_class = YM_INPUT_CLASS;
		dip->type = AUDIO_MIXER_ENUM;
		dip->prev = dip->index - 7;
	mute:
		strcpy(dip->label.name, AudioNmute);
		dip->un.e.num_mem = 2;
		strcpy(dip->un.e.member[0].label.name, AudioNoff);
		dip->un.e.member[0].ord = 0;
		strcpy(dip->un.e.member[1].label.name, AudioNon);
		dip->un.e.member[1].ord = 1;
		break;
		
		
	case YM_OUTPUT_LVL:
		dip->type = AUDIO_MIXER_VALUE;
		dip->mixer_class = YM_OUTPUT_CLASS;
		dip->next = YM_OUTPUT_MUTE;
		strcpy(dip->label.name, AudioNmaster);
		dip->un.v.num_channels = 2;
		strcpy(dip->un.v.units.name, AudioNvolume);
		break;
		
	case YM_OUTPUT_MUTE:
		dip->mixer_class = YM_OUTPUT_CLASS;
		dip->type = AUDIO_MIXER_ENUM;
		dip->prev = YM_OUTPUT_LVL;
		goto mute;
		
	case YM_REC_LVL:	/* record level */
		dip->type = AUDIO_MIXER_VALUE;
		dip->mixer_class = YM_RECORD_CLASS;
		dip->next = YM_RECORD_SOURCE;
		strcpy(dip->label.name, AudioNrecord);
		dip->un.v.num_channels = 2;
		strcpy(dip->un.v.units.name, AudioNvolume);
		break;
		
		
	case YM_RECORD_SOURCE:
		dip->mixer_class = YM_RECORD_CLASS;
		dip->type = AUDIO_MIXER_ENUM;
		dip->prev = YM_REC_LVL;
		strcpy(dip->label.name, AudioNsource);
		dip->un.e.num_mem = 4;
		strcpy(dip->un.e.member[0].label.name, AudioNmicrophone);
		dip->un.e.member[0].ord = MIC_IN_PORT;
		strcpy(dip->un.e.member[1].label.name, AudioNline);
		dip->un.e.member[1].ord = LINE_IN_PORT;
		strcpy(dip->un.e.member[2].label.name, AudioNdac);
		dip->un.e.member[2].ord = DAC_IN_PORT;
		strcpy(dip->un.e.member[3].label.name, AudioNcd);
		dip->un.e.member[3].ord = AUX1_IN_PORT;
		break;
		
	default:
		return ENXIO;
		/*NOTREACHED*/
	}
	
	return 0;
}