emumixer.c

是关于linux2.5.1的完全源码

        get:            snd_emu10k1_send_volume_get,
        put:            snd_emu10k1_send_volume_put
};

static int snd_emu10k1_attn_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 3;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 0xffff;
	return 0;
}

static int snd_emu10k1_attn_get(snd_kcontrol_t * kcontrol,
                                snd_ctl_elem_value_t * ucontrol)
{
	emu10k1_pcm_mixer_t *mix = (emu10k1_pcm_mixer_t *)kcontrol->private_value;
	emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int idx;

	spin_lock_irqsave(&emu->reg_lock, flags);
	for (idx = 0; idx < 3; idx++)
		ucontrol->value.integer.value[idx] = mix->attn[idx];
	spin_unlock_irqrestore(&emu->reg_lock, flags);
        return 0;
}

static int snd_emu10k1_attn_put(snd_kcontrol_t * kcontrol,
				snd_ctl_elem_value_t * ucontrol)
{
	unsigned long flags;
	emu10k1_pcm_mixer_t *mix = (emu10k1_pcm_mixer_t *)kcontrol->private_value;
	emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
	int change = 0, idx, val;

	spin_lock_irqsave(&emu->reg_lock, flags);
	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",
        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);

	ucontrol->value.integer.value[0] = inl(emu->port + HCFG) & HCFG_GPOUT0 ? 0 : 1;
        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;

	spin_lock_irqsave(&emu->reg_lock, flags);
	reg = inl(emu->port + HCFG);
	val = ucontrol->value.integer.value[0] & 1 ? 0 : HCFG_GPOUT0;
	change = (reg & HCFG_GPOUT0) != val;
	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 =
{
	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
};

#if 0 // XXX: not working yet..
/*
 * Audigy analog / digital switches
 */
static int audigy_output_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 audigy_output_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
	unsigned int mask = (unsigned int)kcontrol->private_value;

	ucontrol->value.integer.value[0] = inl(emu->port + A_IOCFG) & mask ? 0 : 1;
        return 0;
}

static int audigy_output_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
	unsigned long flags;
	emu10k1_t *emu = snd_kcontrol_chip(kcontrol);
	unsigned int mask = (unsigned int)kcontrol->private_value;
	unsigned int reg, oreg;
	int change;

	spin_lock_irqsave(&emu->reg_lock, flags);
	reg = oreg = inl(emu->port + A_IOCFG);
	reg &= ~mask;
	reg |= ucontrol->value.integer.value[0] & 1 ? 0 : mask;
	change = (reg != oreg);
	if (change)
		outl(reg, emu->port + A_IOCFG);
	spin_unlock_irqrestore(&emu->reg_lock, flags);
        return change;
}

static snd_kcontrol_new_t audigy_output_analog =
{
	iface:		SNDRV_CTL_ELEM_IFACE_MIXER,
	name:		"Audigy Analog Output Switch",
	info:		audigy_output_info,
	get:		audigy_output_get,
	put:		audigy_output_put,
	private_value:	0x40,
};

static snd_kcontrol_new_t audigy_output_digital =
{
	iface:		SNDRV_CTL_ELEM_IFACE_MIXER,
	name:		"Audigy Digital Output Switch",
	info:		audigy_output_info,
	get:		audigy_output_get,
	put:		audigy_output_put,
	private_value:	0x04,
};
#endif // XXX


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

int __devinit snd_emu10k1_mixer(emu10k1_t *emu)
{
	ac97_t ac97;
	int err, pcm, idx;
	snd_kcontrol_t *kctl;
	snd_card_t *card = emu->card;

	if (!emu->APS) {
		memset(&ac97, 0, sizeof(ac97));
		ac97.write = snd_emu10k1_ac97_write;
		ac97.read = snd_emu10k1_ac97_read;
		ac97.private_data = emu;
		ac97.private_free = snd_emu10k1_mixer_free_ac97;
		if ((err = snd_ac97_mixer(emu->card, &ac97, &emu->ac97)) < 0)
			return err;
	} else {
		strcpy(emu->card->mixername, "EMU APS");
	}

	for (pcm = 0; pcm < 32; pcm++) {
		emu10k1_pcm_mixer_t *mix;
		int v;
		
		mix = &emu->pcm_mixer[pcm];
		mix->epcm = NULL;

		if ((kctl = mix->ctl_send_routing = snd_ctl_new1(&snd_emu10k1_send_routing_control, emu)) == NULL)
			return -ENOMEM;
		kctl->private_value = (long)mix;
		kctl->id.index = pcm;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
		for (v = 0; v < 4; v++)
			mix->send_routing[0][v] = 
				mix->send_routing[1][v] = 
				mix->send_routing[2][v] = v;
		
		if ((kctl = mix->ctl_send_volume = snd_ctl_new1(&snd_emu10k1_send_volume_control, emu)) == NULL)
			return -ENOMEM;
		kctl->private_value = (long)mix;
		kctl->id.index = pcm;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
		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;
		
		if ((kctl = mix->ctl_attn = snd_ctl_new1(&snd_emu10k1_attn_control, emu)) == NULL)
			return -ENOMEM;
		kctl->private_value = (long)mix;
		kctl->id.index = pcm;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
		mix->attn[0] = mix->attn[1] = mix->attn[2] = 0xffff;
	}
	
	for (idx = 0; idx < 3; idx++) {
		if ((kctl = snd_ctl_new1(&snd_emu10k1_spdif_mask_control, emu)) == NULL)
			return -ENOMEM;
		kctl->private_value = idx;
		kctl->id.index = idx;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
		if ((kctl = snd_ctl_new1(&snd_emu10k1_spdif_control, emu)) == NULL)
			return -ENOMEM;
		kctl->private_value = idx;
		kctl->id.index = idx;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
	}

	if (emu->audigy) {
#if 0 // XXX
		if ((kctl = snd_ctl_new1(&audigy_output_analog, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
		if ((kctl = snd_ctl_new1(&audigy_output_digital, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
#endif // XXX
	} else {
		if ((kctl = snd_ctl_new1(&snd_emu10k1_shared_spdif, emu)) == NULL)
			return -ENOMEM;
		if ((err = snd_ctl_add(card, kctl)))
			return err;
	}

	return 0;
}