opti92x-ad1848.c

linux2.6.16版本

	ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
	return bytes_to_frames(substream->runtime, ptr);
}

static snd_pcm_uframes_t snd_opti93x_capture_pointer(struct snd_pcm_substream *substream)
{
	struct snd_opti93x *chip = snd_pcm_substream_chip(substream);
	size_t ptr;
	
	if (!(chip->image[OPTi93X_IFACE_CONF] & OPTi93X_CAPTURE_ENABLE))
		return 0;

	ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
	return bytes_to_frames(substream->runtime, ptr);
}


static void snd_opti93x_overrange(struct snd_opti93x *chip)
{
	unsigned long flags;

	spin_lock_irqsave(&chip->lock, flags);

	if (snd_opti93x_in(chip, OPTi93X_ERR_INIT) & (0x08 | 0x02))
		chip->capture_substream->runtime->overrange++;

	spin_unlock_irqrestore(&chip->lock, flags);
}

static irqreturn_t snd_opti93x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	struct snd_opti93x *codec = dev_id;
	unsigned char status;

	status = snd_opti9xx_read(codec->chip, OPTi9XX_MC_REG(11));
	if ((status & OPTi93X_IRQ_PLAYBACK) && codec->playback_substream)
		snd_pcm_period_elapsed(codec->playback_substream);
	if ((status & OPTi93X_IRQ_CAPTURE) && codec->capture_substream) {
		snd_opti93x_overrange(codec);
		snd_pcm_period_elapsed(codec->capture_substream);
	}
	outb(0x00, OPTi93X_PORT(codec, STATUS));
	return IRQ_HANDLED;
}


static struct snd_pcm_hardware snd_opti93x_playback = {
	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
	.rate_min =		5512,
	.rate_max =		48000,
	.channels_min =		1,
	.channels_max =		2,
	.buffer_bytes_max =	(128*1024),
	.period_bytes_min =	64,
	.period_bytes_max =	(128*1024),
	.periods_min =		1,
	.periods_max =		1024,
	.fifo_size =		0,
};

static struct snd_pcm_hardware snd_opti93x_capture = {
	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
	.formats =		(SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
				 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
	.rates =		SNDRV_PCM_RATE_8000_48000,
	.rate_min =		5512,
	.rate_max =		48000,
	.channels_min =		1,
	.channels_max =		2,
	.buffer_bytes_max =	(128*1024),
	.period_bytes_min =	64,
	.period_bytes_max =	(128*1024),
	.periods_min =		1,
	.periods_max =		1024,
	.fifo_size =		0,
};

static int snd_opti93x_playback_open(struct snd_pcm_substream *substream)
{
	int error;
	struct snd_opti93x *chip = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;

	if ((error = snd_opti93x_open(chip, OPTi93X_MODE_PLAY)) < 0)
		return error;
	snd_pcm_set_sync(substream);
	chip->playback_substream = substream;
	runtime->hw = snd_opti93x_playback;
	snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
	return error;
}

static int snd_opti93x_capture_open(struct snd_pcm_substream *substream)
{
	int error;
	struct snd_opti93x *chip = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;

	if ((error = snd_opti93x_open(chip, OPTi93X_MODE_CAPTURE)) < 0)
		return error;
	runtime->hw = snd_opti93x_capture;
	snd_pcm_set_sync(substream);
	chip->capture_substream = substream;
	snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
	return error;
}

static int snd_opti93x_playback_close(struct snd_pcm_substream *substream)
{
	struct snd_opti93x *chip = snd_pcm_substream_chip(substream);

	chip->playback_substream = NULL;
	snd_opti93x_close(chip, OPTi93X_MODE_PLAY);
	return 0;
}

static int snd_opti93x_capture_close(struct snd_pcm_substream *substream)
{
	struct snd_opti93x *chip = snd_pcm_substream_chip(substream);

	chip->capture_substream = NULL;
	snd_opti93x_close(chip, OPTi93X_MODE_CAPTURE);
	return 0;
}


static void snd_opti93x_init(struct snd_opti93x *chip)
{
	unsigned long flags;
	int i;

	spin_lock_irqsave(&chip->lock, flags);
	snd_opti93x_mce_up(chip);

	for (i = 0; i < 32; i++)
		snd_opti93x_out_image(chip, i, snd_opti93x_default_image[i]);

	snd_opti93x_mce_down(chip);
	spin_unlock_irqrestore(&chip->lock, flags);
}

static int snd_opti93x_probe(struct snd_opti93x *chip)
{
	unsigned long flags;
	unsigned char val;

	spin_lock_irqsave(&chip->lock, flags);
	val = snd_opti93x_in(chip, OPTi93X_ID) & 0x0f;
	spin_unlock_irqrestore(&chip->lock, flags);

	return (val == 0x0a) ? 0 : -ENODEV;
}

static int snd_opti93x_free(struct snd_opti93x *chip)
{
	release_and_free_resource(chip->res_port);
	if (chip->dma1 >= 0) {
		disable_dma(chip->dma1);
		free_dma(chip->dma1);
	}
	if (chip->dma2 >= 0) {
		disable_dma(chip->dma2);
		free_dma(chip->dma2);
	}
	if (chip->irq >= 0) {
	  free_irq(chip->irq, chip);
	}
	kfree(chip);
	return 0;
}

static int snd_opti93x_dev_free(struct snd_device *device)
{
	struct snd_opti93x *chip = device->device_data;
	return snd_opti93x_free(chip);
}

static const char *snd_opti93x_chip_id(struct snd_opti93x *codec)
{
	switch (codec->hardware) {
	case OPTi9XX_HW_82C930: return "82C930";
	case OPTi9XX_HW_82C931: return "82C931";
	case OPTi9XX_HW_82C933: return "82C933";
	default:		return "???";
	}
}

static int snd_opti93x_create(struct snd_card *card, struct snd_opti9xx *chip,
			      int dma1, int dma2,
			      struct snd_opti93x **rcodec)
{
	static struct snd_device_ops ops = {
		.dev_free =	snd_opti93x_dev_free,
	};
	int error;
	struct snd_opti93x *codec;

	*rcodec = NULL;
	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
	if (codec == NULL)
		return -ENOMEM;
	codec->irq = -1;
	codec->dma1 = -1;
	codec->dma2 = -1;

	if ((codec->res_port = request_region(chip->wss_base + 4, 4, "OPTI93x CODEC")) == NULL) {
		snd_printk(KERN_ERR "opti9xx: can't grab port 0x%lx\n", chip->wss_base + 4);
		snd_opti93x_free(codec);
		return -EBUSY;
	}
	if (request_dma(dma1, "OPTI93x - 1")) {
		snd_printk(KERN_ERR "opti9xx: can't grab DMA1 %d\n", dma1);
		snd_opti93x_free(codec);
		return -EBUSY;
	}
	codec->dma1 = chip->dma1;
	if (request_dma(dma2, "OPTI93x - 2")) {
		snd_printk(KERN_ERR "opti9xx: can't grab DMA2 %d\n", dma2);
		snd_opti93x_free(codec);
		return -EBUSY;
	}
	codec->dma2 = chip->dma2;

	if (request_irq(chip->irq, snd_opti93x_interrupt, SA_INTERRUPT, DRIVER_NAME" - WSS", codec)) {
		snd_printk(KERN_ERR "opti9xx: can't grab IRQ %d\n", chip->irq);
		snd_opti93x_free(codec);
		return -EBUSY;
	}

	codec->card = card;
	codec->port = chip->wss_base + 4;
	codec->irq = chip->irq;

	spin_lock_init(&codec->lock);
	codec->hardware = chip->hardware;
	codec->chip = chip;

	if ((error = snd_opti93x_probe(codec))) {
		snd_opti93x_free(codec);
		return error;
	}

	snd_opti93x_init(codec);

	/* Register device */
	if ((error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops)) < 0) {
		snd_opti93x_free(codec);
		return error;
	}

	*rcodec = codec;
	return 0;
}

static struct snd_pcm_ops snd_opti93x_playback_ops = {
	.open =		snd_opti93x_playback_open,
	.close =	snd_opti93x_playback_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_opti93x_hw_params,
	.hw_free =	snd_opti93x_hw_free,
	.prepare =	snd_opti93x_playback_prepare,
	.trigger =	snd_opti93x_playback_trigger,
	.pointer =	snd_opti93x_playback_pointer,
};

static struct snd_pcm_ops snd_opti93x_capture_ops = {
	.open =		snd_opti93x_capture_open,
	.close =	snd_opti93x_capture_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_opti93x_hw_params,
	.hw_free =	snd_opti93x_hw_free,
	.prepare =	snd_opti93x_capture_prepare,
	.trigger =	snd_opti93x_capture_trigger,
	.pointer =	snd_opti93x_capture_pointer,
};

static int snd_opti93x_pcm(struct snd_opti93x *codec, int device, struct snd_pcm **rpcm)
{
	int error;
	struct snd_pcm *pcm;

	if ((error = snd_pcm_new(codec->card, "OPTi 82C93X", device, 1, 1, &pcm)) < 0)
		return error;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_opti93x_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_opti93x_capture_ops);

	pcm->private_data = codec;
	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;

	strcpy(pcm->name, snd_opti93x_chip_id(codec));

	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
					      snd_dma_isa_data(),
					      64*1024, codec->dma1 > 3 || codec->dma2 > 3 ? 128*1024 : 64*1024);

	codec->pcm = pcm;
	if (rpcm)
		*rpcm = pcm;
	return 0;
}

/*
 *  MIXER part
 */

static int snd_opti93x_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[4] = {
		"Line1", "Aux", "Mic", "Mix"
	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 2;
	uinfo->value.enumerated.items = 4;
	if (uinfo->value.enumerated.item > 3)
		uinfo->value.enumerated.item = 3;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_opti93x_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_opti93x *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	
	spin_lock_irqsave(&chip->lock, flags);
	ucontrol->value.enumerated.item[0] = (chip->image[OPTi93X_MIXOUT_LEFT] & OPTi93X_MIXOUT_MIXER) >> 6;
	ucontrol->value.enumerated.item[1] = (chip->image[OPTi93X_MIXOUT_RIGHT] & OPTi93X_MIXOUT_MIXER) >> 6;
	spin_unlock_irqrestore(&chip->lock, flags);
	return 0;
}

static int snd_opti93x_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_opti93x *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	unsigned short left, right;
	int change;
	
	if (ucontrol->value.enumerated.item[0] > 3 ||
	    ucontrol->value.enumerated.item[1] > 3)
		return -EINVAL;
	left = ucontrol->value.enumerated.item[0] << 6;
	right = ucontrol->value.enumerated.item[1] << 6;
	spin_lock_irqsave(&chip->lock, flags);
	left = (chip->image[OPTi93X_MIXOUT_LEFT] & ~OPTi93X_MIXOUT_MIXER) | left;
	right = (chip->image[OPTi93X_MIXOUT_RIGHT] & ~OPTi93X_MIXOUT_MIXER) | right;
	change = left != chip->image[OPTi93X_MIXOUT_LEFT] ||
	         right != chip->image[OPTi93X_MIXOUT_RIGHT];
	snd_opti93x_out_image(chip, OPTi93X_MIXOUT_LEFT, left);
	snd_opti93x_out_image(chip, OPTi93X_MIXOUT_RIGHT, right);
	spin_unlock_irqrestore(&chip->lock, flags);
	return change;
}

#if 0

#define OPTi93X_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_opti93x_info_single, \
  .get = snd_opti93x_get_single, .put = snd_opti93x_put_single, \
  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }

static int snd_opti93x_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	int mask = (kcontrol->private_value >> 16) & 0xff;

	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_opti93x_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_opti93x *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int reg = kcontrol->private_value & 0xff;
	int shift = (kcontrol->private_value >> 8) & 0xff;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;
	
	spin_lock_irqsave(&chip->lock, flags);
	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
	spin_unlock_irqrestore(&chip->lock, flags);
	if (invert)
		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
	return 0;
}

static int snd_opti93x_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_opti93x *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int reg = kcontrol->private_value & 0xff;
	int shift = (kcontrol->private_value >> 8) & 0xff;
	int mask = (kcontrol->private_value >> 16) & 0xff;
	int invert = (kcontrol->private_value >> 24) & 0xff;
	int change;
	unsigned short val;
	
	val = (ucontrol->value.integer.value[0] & mask);
	if (invert)
		val = mask - val;
	val <<= shift;
	spin_lock_irqsave(&chip->lock, flags);
	val = (chip->image[reg] & ~(mask << shift)) | val;
	change = val != chip->image[reg];
	snd_opti93x_out(chip, reg, val);
	spin_unlock_irqrestore(&chip->lock, flags);
	return change;
}

#endif /* single */

#define OPTi93X_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_opti93x_info_double, \
  .get = snd_opti93x_get_double, .put = snd_opti93x_put_double, \
  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }

#define OPTi93X_DOUBLE_INVERT_INVERT(xctl) \
	do { xctl.private_value ^= 22; } while (0)
#define OPTi93X_DOUBLE_CHANGE_REGS(xctl, left_reg, right_reg) \
	do { xctl.private_value &= ~0x0000ffff; \
	     xctl.private_value |= left_reg | (right_reg << 8); } while (0)

static int snd_opti93x_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	int mask = (kcontrol->private_value >> 24) & 0xff;

	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = mask;
	return 0;
}

static int snd_opti93x_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_opti93x *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int left_reg = kcontrol->private_value & 0xff;
	int right_reg = (kcontrol->private_value >> 8) & 0xff;
	int shift_left = (kcontrol->private_value >> 16) & 0x07;
	int shift_right = (kcontrol->private_value >> 19) & 0x07;
	int mask = (kcontrol->private_value >> 24) & 0xff;
	int invert = (kcontrol->private_value >> 22) & 1;
	
	spin_lock_irqsave(&chip->lock, flags);
	ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
	ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
	spin_unlock_irqrestore(&chip->lock, flags);
	if (invert) {
		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
	}
	return 0;
}

static int snd_opti93x_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_opti93x *chip = snd_kcontrol_chip(kcontrol);
	unsigned long flags;
	int left_reg = kcontrol->private_value & 0xff;
	int right_reg = (kcontrol->private_value >> 8) & 0xff;
	int shift_left = (kcontrol->private_value >> 16) & 0x07;
	int shift_right = (kcontrol->private_value >> 19) & 0x07;
	int mask = (kcontrol->private_value >> 24) & 0xff;
	int invert = (kcontrol->private_value >> 22) & 1;
	int change;
	unsigned short val1, val2;
	
	val1 = ucontrol->value.integer.value[0] & mask;
	val2 = ucontrol->value.integer.value[1] & mask;
	if (invert) {
		val1 = mask - val1;
		val2 = mask - val2;
	}
	val1 <<= shift_left;
	val2 <<= shift_right;
	spin_lock_irqsave(&chip->lock, flags);
	val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
	val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
	change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
	snd_opti93x_out_image(chip, left_reg, val1);
	snd_opti93x_out_image(chip, right_reg, val2);
	spin_unlock_irqrestore(&chip->lock, flags);
	return change;
}

static struct snd_kcontrol_new snd_opti93x_controls[] = {
OPTi93X_DOUBLE("Master Playback Switch", 0, OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Master Playback Volume", 0, OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 1, 1, 31, 1), 
OPTi93X_DOUBLE("PCM Playback Switch", 0, OPTi93X_DAC_LEFT, OPTi93X_DAC_RIGHT, 7, 7, 1, 1),
OPTi93X_DOUBLE("PCM Playback Volume", 0, OPTi93X_DAC_LEFT, OPTi93X_DAC_RIGHT, 0, 0, 31, 1),
OPTi93X_DOUBLE("FM Playback Switch", 0, OPTi931_FM_LEFT_INPUT, OPTi931_FM_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("FM Playback Volume", 0, OPTi931_FM_LEFT_INPUT, OPTi931_FM_RIGHT_INPUT, 1, 1, 15, 1),
OPTi93X_DOUBLE("Line Playback Switch", 0, OPTi93X_LINE_LEFT_INPUT, OPTi93X_LINE_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Line Playback Volume", 0, OPTi93X_LINE_LEFT_INPUT, OPTi93X_LINE_RIGHT_INPUT, 1, 1, 15, 1), 
OPTi93X_DOUBLE("Mic Playback Switch", 0, OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Mic Playback Volume", 0, OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 1, 1, 15, 1), 
OPTi93X_DOUBLE("Mic Boost", 0, OPTi93X_MIXOUT_LEFT, OPTi93X_MIXOUT_RIGHT, 5, 5, 1, 1),
OPTi93X_DOUBLE("CD Playback Switch", 0, OPTi93X_CD_LEFT_INPUT, OPTi93X_CD_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("CD Playback Volume", 0, OPTi93X_CD_LEFT_INPUT, OPTi93X_CD_RIGHT_INPUT, 1, 1, 15, 1),
OPTi93X_DOUBLE("Aux Playback Switch", 0, OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 7, 7, 1, 1),
OPTi93X_DOUBLE("Aux Playback Volume", 0, OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 1, 1, 15, 1), 
OPTi93X_DOUBLE("Capture Volume", 0, OPTi93X_MIXOUT_LEFT, OPTi93X_MIXOUT_RIGHT, 0, 0, 15, 0),
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Capture Source",
	.info = snd_opti93x_info_mux,
	.get = snd_opti93x_get_mux,
	.put = snd_opti93x_put_mux,
}
};
                                        
static int snd_opti93x_mixer(struct snd_opti93x *chip)
{
	struct snd_card *card;
	struct snd_kcontrol_new knew;