emumixer.c

h内核

	for (idx = 0; idx < 3; idx++) {
		val = ucontrol->value.integer.value[idx] & 0xffff;
		if (mix->attn[idx] != val) {
			mix->attn[idx] = val;
			change = 1;
		}
	}
	if (change && mix->epcm) {
		if (mix->epcm->voices[0] && mix->epcm->voices[1]) {
			snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[0]->number, mix->attn[1]);
			snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[1]->number, mix->attn[2]);
		} else if (mix->epcm->voices[0]) {
			snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[0]->number, mix->attn[0]);
		}
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static snd_kcontrol_new_t snd_emu10k1_attn_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =         "EMU10K1 PCM Volume",
	.count =	32,
	.info =         snd_emu10k1_attn_info,
	.get =          snd_emu10k1_attn_get,
	.put =          snd_emu10k1_attn_put
};

static int snd_emu10k1_shared_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_emu10k1_shared_spdif_get(snd_kcontrol_t * kcontrol,
					snd_ctl_elem_value_t * ucontrol)
{
	emu10k1_t *emu = snd_kcontrol_chip(kcontrol);

	if (emu->audigy)
		ucontrol->value.integer.value[0] = inl(emu->port + A_IOCFG) & A_IOCFG_GPOUT0 ? 1 : 0;
	else
		ucontrol->value.integer.value[0] = inl(emu->port + HCFG) & HCFG_GPOUT0 ? 1 : 0;
	return 0;
}

static int snd_emu10k1_shared_spdif_put(snd_kcontrol_t * kcontrol,
					snd_ctl_elem_value_t * ucontrol)
{
	unsigned long flags;
	emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
	unsigned int reg, val;
	int change = 0;

	spin_lock_irqsave(&emu->reg_lock, flags);
	if (emu->audigy) {
		reg = inl(emu->port + A_IOCFG);
		val = ucontrol->value.integer.value[0] ? A_IOCFG_GPOUT0 : 0;
		change = (reg & A_IOCFG_GPOUT0) != val;
		if (change) {
			reg &= ~A_IOCFG_GPOUT0;
			reg |= val;
			outl(reg | val, emu->port + A_IOCFG);
		}
	}
	reg = inl(emu->port + HCFG);
	val = ucontrol->value.integer.value[0] ? HCFG_GPOUT0 : 0;
	change |= (reg & HCFG_GPOUT0) != val;
	if (change) {
		reg &= ~HCFG_GPOUT0;
		reg |= val;
		outl(reg | val, emu->port + HCFG);
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static snd_kcontrol_new_t snd_emu10k1_shared_spdif __devinitdata =
{
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =		"SB Live Analog/Digital Output Jack",
	.info =		snd_emu10k1_shared_spdif_info,
	.get =		snd_emu10k1_shared_spdif_get,
	.put =		snd_emu10k1_shared_spdif_put
};

static snd_kcontrol_new_t snd_audigy_shared_spdif __devinitdata =
{
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =		"Audigy Analog/Digital Output Jack",
	.info =		snd_emu10k1_shared_spdif_info,
	.get =		snd_emu10k1_shared_spdif_get,
	.put =		snd_emu10k1_shared_spdif_put
};

/*
 */
static void snd_emu10k1_mixer_free_ac97(ac97_t *ac97)
{
	emu10k1_t *emu = ac97->private_data;
	emu->ac97 = NULL;
}

/*
 */
static int remove_ctl(snd_card_t *card, const char *name)
{
	snd_ctl_elem_id_t id;
	memset(&id, 0, sizeof(id));
	strcpy(id.name, name);
	id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	return snd_ctl_remove_id(card, &id);
}

static snd_kcontrol_t *ctl_find(snd_card_t *card, const char *name)
{
	snd_ctl_elem_id_t sid;
	memset(&sid, 0, sizeof(sid));
	strcpy(sid.name, name);
	sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	return snd_ctl_find_id(card, &sid);
}

static int rename_ctl(snd_card_t *card, const char *src, const char *dst)
{
	snd_kcontrol_t *kctl = ctl_find(card, src);
	if (kctl) {
		strcpy(kctl->id.name, dst);
		return 0;
	}
	return -ENOENT;
}

int __devinit snd_emu10k1_mixer(emu10k1_t *emu)
{
	int err, pcm;
	snd_kcontrol_t *kctl;
	snd_card_t *card = emu->card;
	char **c;
	static char *emu10k1_remove_ctls[] = {
		/* no AC97 mono, surround, center/lfe */
		"Master Mono Playback Switch",
		"Master Mono Playback Volume",
		"PCM Out Path & Mute",
		"Mono Output Select",
		"Surround Playback Switch",
		"Surround Playback Volume",
		"Center Playback Switch",
		"Center Playback Volume",
		"LFE Playback Switch",
		"LFE Playback Volume",
		NULL
	};
	static char *emu10k1_rename_ctls[] = {
		"Surround Digital Playback Volume", "Surround Playback Volume",
		"Center Digital Playback Volume", "Center Playback Volume",
		"LFE Digital Playback Volume", "LFE Playback Volume",
		NULL
	};
	static char *audigy_remove_ctls[] = {
		/* Master/PCM controls on ac97 of Audigy has no effect */
		"PCM Playback Switch",
		"PCM Playback Volume",
		"Master Mono Playback Switch",
		"Master Mono Playback Volume",
		"Master Playback Switch",
		"Master Playback Volume",
		"PCM Out Path & Mute",
		"Mono Output Select",
		/* remove unused AC97 capture controls */
		"Capture Source",
		"Capture Switch",
		"Capture Volume",
		"Mic Select",
		"Video Playback Switch",
		"Video Playback Volume",
		"Mic Playback Switch",
		"Mic Playback Volume",
		NULL
	};
	static char *audigy_rename_ctls[] = {
		/* use conventional names */
		"Wave Playback Volume", "PCM Playback Volume",
		/* "Wave Capture Volume", "PCM Capture Volume", */
		"Wave Master Playback Volume", "Master Playback Volume",
		"AMic Playback Volume", "Mic Playback Volume",
		NULL
	};

	if (!emu->no_ac97) {
		ac97_bus_t *pbus;
		ac97_template_t ac97;
		static ac97_bus_ops_t ops = {
			.write = snd_emu10k1_ac97_write,
			.read = snd_emu10k1_ac97_read,
		};

		if ((err = snd_ac97_bus(emu->card, 0, &ops, NULL, &pbus)) < 0)
			return err;
		pbus->no_vra = 1; /* we don't need VRA */
		
		memset(&ac97, 0, sizeof(ac97));
		ac97.private_data = emu;
		ac97.private_free = snd_emu10k1_mixer_free_ac97;
		if ((err = snd_ac97_mixer(pbus, &ac97, &emu->ac97)) < 0)
			return err;
		if (emu->audigy) {
			/* set master volume to 0 dB */
			snd_ac97_write(emu->ac97, AC97_MASTER, 0x0000);
			/* set capture source to mic */
			snd_ac97_write(emu->ac97, AC97_REC_SEL, 0x0000);
			c = audigy_remove_ctls;
		} else {
			/*
			 * Credits for cards based on STAC9758:
			 *   James Courtier-Dutton <[e-mail]>
			 *   Voluspa <[e-mail]>
			 */
			if (emu->ac97->id == AC97_ID_STAC9758) {
				emu->rear_ac97 = 1;
				snd_emu10k1_ptr_write(emu, AC97SLOT, 0, AC97SLOT_CNTR|AC97SLOT_LFE|AC97SLOT_REAR_LEFT|AC97SLOT_REAR_RIGHT);
			}
			/* remove unused AC97 controls */
			snd_ac97_write(emu->ac97, AC97_SURROUND_MASTER, 0x0202);
			snd_ac97_write(emu->ac97, AC97_CENTER_LFE_MASTER, 0x0202);
			c = emu10k1_remove_ctls;
		}
		for (; *c; c++)
			remove_ctl(card, *c);
	} else {
		if (emu->APS)
			strcpy(emu->card->mixername, "EMU APS");
		else if (emu->audigy)
			strcpy(emu->card->mixername, "SB Audigy");
		else
			strcpy(emu->card->mixername, "Emu10k1");
	}

	if (emu->audigy)
		c = audigy_rename_ctls;
	else
		c = emu10k1_rename_ctls;
	for (; *c; c += 2)
		rename_ctl(card, c[0], c[1]);

	if ((kctl = emu->ctl_send_routing = snd_ctl_new1(&snd_emu10k1_send_routing_control, emu)) == NULL)
		return -ENOMEM;
	if ((err = snd_ctl_add(card, kctl)))
		return err;
	if ((kctl = emu->ctl_send_volume = snd_ctl_new1(&snd_emu10k1_send_volume_control, emu)) == NULL)
		return -ENOMEM;
	if ((err = snd_ctl_add(card, kctl)))
		return err;
	if ((kctl = emu->ctl_attn = snd_ctl_new1(&snd_emu10k1_attn_control, emu)) == NULL)
		return -ENOMEM;
	if ((err = snd_ctl_add(card, kctl)))
		return err;

	/* intiailize the routing and volume table for each pcm playback stream */
	for (pcm = 0; pcm < 32; pcm++) {
		emu10k1_pcm_mixer_t *mix;
		int v;
		
		mix = &emu->pcm_mixer[pcm];
		mix->epcm = NULL;

		for (v = 0; v < 4; v++)
			mix->send_routing[0][v] = 
				mix->send_routing[1][v] = 
				mix->send_routing[2][v] = v;
		
		memset(&mix->send_volume, 0, sizeof(mix->send_volume));
		mix->send_volume[0][0] = mix->send_volume[0][1] =
		mix->send_volume[1][0] = mix->send_volume[2][1] = 255;
		
		mix->attn[0] = mix->attn[1] = mix->attn[2] = 0xffff;
	}
	
	if (! emu->APS) { /* FIXME: APS has these controls? */
		/* sb live! and audigy */
		if ((kctl = snd_ctl_new1(&snd_emu10k1_spdif_mask_control, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
		if ((kctl = ctl_find(card, SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT))) != NULL) {
			/* already defined by ac97, remove it */
			/* FIXME: or do we need both controls? */
			remove_ctl(card, SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT));
		}
		if ((kctl = snd_ctl_new1(&snd_emu10k1_spdif_control, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
	}

	if (emu->audigy) {
		if ((kctl = snd_ctl_new1(&snd_audigy_shared_spdif, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
	} else if (! emu->APS) {
		/* sb live! */
		if ((kctl = snd_ctl_new1(&snd_emu10k1_shared_spdif, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
	}

	return 0;
}