emumixer.c

linux 内核源代码

	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
	.count =	3,
	.info =         snd_emu10k1_spdif_info,
	.get =          snd_emu10k1_spdif_get_mask
};

static struct snd_kcontrol_new snd_emu10k1_spdif_control =
{
	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
	.count =	3,
	.info =         snd_emu10k1_spdif_info,
	.get =          snd_emu10k1_spdif_get,
	.put =          snd_emu10k1_spdif_put
};


static void update_emu10k1_fxrt(struct snd_emu10k1 *emu, int voice, unsigned char *route)
{
	if (emu->audigy) {
		snd_emu10k1_ptr_write(emu, A_FXRT1, voice,
				      snd_emu10k1_compose_audigy_fxrt1(route));
		snd_emu10k1_ptr_write(emu, A_FXRT2, voice,
				      snd_emu10k1_compose_audigy_fxrt2(route));
	} else {
		snd_emu10k1_ptr_write(emu, FXRT, voice,
				      snd_emu10k1_compose_send_routing(route));
	}
}

static void update_emu10k1_send_volume(struct snd_emu10k1 *emu, int voice, unsigned char *volume)
{
	snd_emu10k1_ptr_write(emu, PTRX_FXSENDAMOUNT_A, voice, volume[0]);
	snd_emu10k1_ptr_write(emu, PTRX_FXSENDAMOUNT_B, voice, volume[1]);
	snd_emu10k1_ptr_write(emu, PSST_FXSENDAMOUNT_C, voice, volume[2]);
	snd_emu10k1_ptr_write(emu, DSL_FXSENDAMOUNT_D, voice, volume[3]);
	if (emu->audigy) {
		unsigned int val = ((unsigned int)volume[4] << 24) |
			((unsigned int)volume[5] << 16) |
			((unsigned int)volume[6] << 8) |
			(unsigned int)volume[7];
		snd_emu10k1_ptr_write(emu, A_SENDAMOUNTS, voice, val);
	}
}

/* PCM stream controls */

static int snd_emu10k1_send_routing_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = emu->audigy ? 3*8 : 3*4;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = emu->audigy ? 0x3f : 0x0f;
	return 0;
}

static int snd_emu10k1_send_routing_get(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	int voice, idx;
	int num_efx = emu->audigy ? 8 : 4;
	int mask = emu->audigy ? 0x3f : 0x0f;

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

static int snd_emu10k1_send_routing_put(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	int change = 0, voice, idx, val;
	int num_efx = emu->audigy ? 8 : 4;
	int mask = emu->audigy ? 0x3f : 0x0f;

	spin_lock_irqsave(&emu->reg_lock, flags);
	for (voice = 0; voice < 3; voice++)
		for (idx = 0; idx < num_efx; idx++) {
			val = ucontrol->value.integer.value[(voice * num_efx) + idx] & mask;
			if (mix->send_routing[voice][idx] != val) {
				mix->send_routing[voice][idx] = val;
				change = 1;
			}
		}	
	if (change && mix->epcm) {
		if (mix->epcm->voices[0] && mix->epcm->voices[1]) {
			update_emu10k1_fxrt(emu, mix->epcm->voices[0]->number,
					    &mix->send_routing[1][0]);
			update_emu10k1_fxrt(emu, mix->epcm->voices[1]->number,
					    &mix->send_routing[2][0]);
		} else if (mix->epcm->voices[0]) {
			update_emu10k1_fxrt(emu, mix->epcm->voices[0]->number,
					    &mix->send_routing[0][0]);
		}
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static struct snd_kcontrol_new snd_emu10k1_send_routing_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         "EMU10K1 PCM Send Routing",
	.count =	32,
	.info =         snd_emu10k1_send_routing_info,
	.get =          snd_emu10k1_send_routing_get,
	.put =          snd_emu10k1_send_routing_put
};

static int snd_emu10k1_send_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = emu->audigy ? 3*8 : 3*4;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 255;
	return 0;
}

static int snd_emu10k1_send_volume_get(struct snd_kcontrol *kcontrol,
                                       struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	int idx;
	int num_efx = emu->audigy ? 8 : 4;

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

static int snd_emu10k1_send_volume_put(struct snd_kcontrol *kcontrol,
                                       struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	int change = 0, idx, val;
	int num_efx = emu->audigy ? 8 : 4;

	spin_lock_irqsave(&emu->reg_lock, flags);
	for (idx = 0; idx < 3*num_efx; idx++) {
		val = ucontrol->value.integer.value[idx] & 255;
		if (mix->send_volume[idx/num_efx][idx%num_efx] != val) {
			mix->send_volume[idx/num_efx][idx%num_efx] = val;
			change = 1;
		}
	}
	if (change && mix->epcm) {
		if (mix->epcm->voices[0] && mix->epcm->voices[1]) {
			update_emu10k1_send_volume(emu, mix->epcm->voices[0]->number,
						   &mix->send_volume[1][0]);
			update_emu10k1_send_volume(emu, mix->epcm->voices[1]->number,
						   &mix->send_volume[2][0]);
		} else if (mix->epcm->voices[0]) {
			update_emu10k1_send_volume(emu, mix->epcm->voices[0]->number,
						   &mix->send_volume[0][0]);
		}
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static struct snd_kcontrol_new snd_emu10k1_send_volume_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         "EMU10K1 PCM Send Volume",
	.count =	32,
	.info =         snd_emu10k1_send_volume_info,
	.get =          snd_emu10k1_send_volume_get,
	.put =          snd_emu10k1_send_volume_put
};

static int snd_emu10k1_attn_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	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(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	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 struct snd_kcontrol_new snd_emu10k1_attn_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         "EMU10K1 PCM Volume",
	.count =	32,
	.info =         snd_emu10k1_attn_info,
	.get =          snd_emu10k1_attn_get,
	.put =          snd_emu10k1_attn_put
};

/* Mutichannel PCM stream controls */

static int snd_emu10k1_efx_send_routing_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = emu->audigy ? 8 : 4;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = emu->audigy ? 0x3f : 0x0f;
	return 0;
}

static int snd_emu10k1_efx_send_routing_get(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->efx_pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	int idx;
	int num_efx = emu->audigy ? 8 : 4;
	int mask = emu->audigy ? 0x3f : 0x0f;

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

static int snd_emu10k1_efx_send_routing_put(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	int ch = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	struct snd_emu10k1_pcm_mixer *mix = &emu->efx_pcm_mixer[ch];
	int change = 0, idx, val;
	int num_efx = emu->audigy ? 8 : 4;
	int mask = emu->audigy ? 0x3f : 0x0f;

	spin_lock_irqsave(&emu->reg_lock, flags);
	for (idx = 0; idx < num_efx; idx++) {
		val = ucontrol->value.integer.value[idx] & mask;
		if (mix->send_routing[0][idx] != val) {
			mix->send_routing[0][idx] = val;
			change = 1;
		}
	}	

	if (change && mix->epcm) {
		if (mix->epcm->voices[ch]) {
			update_emu10k1_fxrt(emu, mix->epcm->voices[ch]->number,
					&mix->send_routing[0][0]);
		}
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static struct snd_kcontrol_new snd_emu10k1_efx_send_routing_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         "Multichannel PCM Send Routing",
	.count =	16,
	.info =         snd_emu10k1_efx_send_routing_info,
	.get =          snd_emu10k1_efx_send_routing_get,
	.put =          snd_emu10k1_efx_send_routing_put
};

static int snd_emu10k1_efx_send_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = emu->audigy ? 8 : 4;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 255;
	return 0;
}

static int snd_emu10k1_efx_send_volume_get(struct snd_kcontrol *kcontrol,
                                       struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->efx_pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	int idx;
	int num_efx = emu->audigy ? 8 : 4;

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

static int snd_emu10k1_efx_send_volume_put(struct snd_kcontrol *kcontrol,
                                       struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	int ch = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	struct snd_emu10k1_pcm_mixer *mix = &emu->efx_pcm_mixer[ch];
	int change = 0, idx, val;
	int num_efx = emu->audigy ? 8 : 4;

	spin_lock_irqsave(&emu->reg_lock, flags);
	for (idx = 0; idx < num_efx; idx++) {
		val = ucontrol->value.integer.value[idx] & 255;
		if (mix->send_volume[0][idx] != val) {
			mix->send_volume[0][idx] = val;
			change = 1;
		}
	}
	if (change && mix->epcm) {
		if (mix->epcm->voices[ch]) {
			update_emu10k1_send_volume(emu, mix->epcm->voices[ch]->number,
						   &mix->send_volume[0][0]);
		}
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}


static struct snd_kcontrol_new snd_emu10k1_efx_send_volume_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         "Multichannel PCM Send Volume",
	.count =	16,
	.info =         snd_emu10k1_efx_send_volume_info,
	.get =          snd_emu10k1_efx_send_volume_get,
	.put =          snd_emu10k1_efx_send_volume_put
};

static int snd_emu10k1_efx_attn_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 0xffff;
	return 0;
}

static int snd_emu10k1_efx_attn_get(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	struct snd_emu10k1_pcm_mixer *mix =
		&emu->efx_pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
	unsigned long flags;

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

static int snd_emu10k1_efx_attn_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	unsigned long flags;
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	int ch = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	struct snd_emu10k1_pcm_mixer *mix = &emu->efx_pcm_mixer[ch];
	int change = 0, val;

	spin_lock_irqsave(&emu->reg_lock, flags);
	val = ucontrol->value.integer.value[0] & 0xffff;
	if (mix->attn[0] != val) {
		mix->attn[0] = val;
		change = 1;
	}
	if (change && mix->epcm) {
		if (mix->epcm->voices[ch]) {
			snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[ch]->number, mix->attn[0]);
		}
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static struct snd_kcontrol_new snd_emu10k1_efx_attn_control =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
	.name =         "Multichannel PCM Volume",
	.count =	16,
	.info =         snd_emu10k1_efx_attn_info,
	.get =          snd_emu10k1_efx_attn_get,
	.put =          snd_emu10k1_efx_attn_put
};

#define snd_emu10k1_shared_spdif_info	snd_ctl_boolean_mono_info

static int snd_emu10k1_shared_spdif_get(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);

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