via82xx.c

linux 内核源代码

	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_via82xx_hw_params,
	.hw_free =	snd_via82xx_hw_free,
	.prepare =	snd_via686_capture_prepare,
	.trigger =	snd_via82xx_pcm_trigger,
	.pointer =	snd_via686_pcm_pointer,
	.page =		snd_pcm_sgbuf_ops_page,
};

/* via823x DSX playback callbacks */
static struct snd_pcm_ops snd_via8233_playback_ops = {
	.open =		snd_via82xx_playback_open,
	.close =	snd_via82xx_pcm_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_via82xx_hw_params,
	.hw_free =	snd_via82xx_hw_free,
	.prepare =	snd_via8233_playback_prepare,
	.trigger =	snd_via82xx_pcm_trigger,
	.pointer =	snd_via8233_pcm_pointer,
	.page =		snd_pcm_sgbuf_ops_page,
};

/* via823x multi-channel playback callbacks */
static struct snd_pcm_ops snd_via8233_multi_ops = {
	.open =		snd_via8233_multi_open,
	.close =	snd_via82xx_pcm_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_via82xx_hw_params,
	.hw_free =	snd_via82xx_hw_free,
	.prepare =	snd_via8233_multi_prepare,
	.trigger =	snd_via82xx_pcm_trigger,
	.pointer =	snd_via8233_pcm_pointer,
	.page =		snd_pcm_sgbuf_ops_page,
};

/* via823x capture callbacks */
static struct snd_pcm_ops snd_via8233_capture_ops = {
	.open =		snd_via82xx_capture_open,
	.close =	snd_via82xx_pcm_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_via82xx_hw_params,
	.hw_free =	snd_via82xx_hw_free,
	.prepare =	snd_via8233_capture_prepare,
	.trigger =	snd_via82xx_pcm_trigger,
	.pointer =	snd_via8233_pcm_pointer,
	.page =		snd_pcm_sgbuf_ops_page,
};


static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
			int shadow_pos, int direction)
{
	chip->devs[idx].reg_offset = reg_offset;
	chip->devs[idx].shadow_shift = shadow_pos * 4;
	chip->devs[idx].direction = direction;
	chip->devs[idx].port = chip->port + reg_offset;
}

/*
 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
 */
static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
{
	struct snd_pcm *pcm;
	int i, err;

	chip->playback_devno = 0;	/* x 4 */
	chip->multi_devno = 4;		/* x 1 */
	chip->capture_devno = 5;	/* x 2 */
	chip->num_devs = 7;
	chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */

	/* PCM #0:  4 DSX playbacks and 1 capture */
	err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
	if (err < 0)
		return err;
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
	pcm->private_data = chip;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcms[0] = pcm;
	/* set up playbacks */
	for (i = 0; i < 4; i++)
		init_viadev(chip, i, 0x10 * i, i, 0);
	/* capture */
	init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);

	if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
							 snd_dma_pci_data(chip->pci),
							 64*1024, 128*1024)) < 0)
		return err;

	/* PCM #1:  multi-channel playback and 2nd capture */
	err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
	if (err < 0)
		return err;
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
	pcm->private_data = chip;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcms[1] = pcm;
	/* set up playback */
	init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
	/* set up capture */
	init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);

	if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
						         snd_dma_pci_data(chip->pci),
							 64*1024, 128*1024)) < 0)
		return err;

	return 0;
}

/*
 * create pcm instances for VIA8233A
 */
static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
{
	struct snd_pcm *pcm;
	int err;

	chip->multi_devno = 0;
	chip->playback_devno = 1;
	chip->capture_devno = 2;
	chip->num_devs = 3;
	chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */

	/* PCM #0:  multi-channel playback and capture */
	err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
	if (err < 0)
		return err;
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
	pcm->private_data = chip;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcms[0] = pcm;
	/* set up playback */
	init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
	/* capture */
	init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);

	if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
							 snd_dma_pci_data(chip->pci),
							 64*1024, 128*1024)) < 0)
		return err;

	/* SPDIF supported? */
	if (! ac97_can_spdif(chip->ac97))
		return 0;

	/* PCM #1:  DXS3 playback (for spdif) */
	err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
	if (err < 0)
		return err;
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
	pcm->private_data = chip;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcms[1] = pcm;
	/* set up playback */
	init_viadev(chip, chip->playback_devno, 0x30, 3, 0);

	if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
							 snd_dma_pci_data(chip->pci),
							 64*1024, 128*1024)) < 0)
		return err;

	return 0;
}

/*
 * create a pcm instance for via686a/b
 */
static int __devinit snd_via686_pcm_new(struct via82xx *chip)
{
	struct snd_pcm *pcm;
	int err;

	chip->playback_devno = 0;
	chip->capture_devno = 1;
	chip->num_devs = 2;
	chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */

	err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
	if (err < 0)
		return err;
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
	pcm->private_data = chip;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcms[0] = pcm;
	init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
	init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);

	if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
							 snd_dma_pci_data(chip->pci),
							 64*1024, 128*1024)) < 0)
		return err;

	return 0;
}


/*
 *  Mixer part
 */

static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
					   struct snd_ctl_elem_info *uinfo)
{
	/* formerly they were "Line" and "Mic", but it looks like that they
	 * have nothing to do with the actual physical connections...
	 */
	static char *texts[2] = {
		"Input1", "Input2"
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item >= 2)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
					  struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
	ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
	return 0;
}

static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
					  struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
	u8 val, oval;

	spin_lock_irq(&chip->reg_lock);
	oval = inb(port);
	val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
	if (ucontrol->value.enumerated.item[0])
		val |= VIA_REG_CAPTURE_CHANNEL_MIC;
	if (val != oval)
		outb(val, port);
	spin_unlock_irq(&chip->reg_lock);
	return val != oval;
}

static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
	.name = "Input Source Select",
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.info = snd_via8233_capture_source_info,
	.get = snd_via8233_capture_source_get,
	.put = snd_via8233_capture_source_put,
};

#define snd_via8233_dxs3_spdif_info	snd_ctl_boolean_mono_info

static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	u8 val;

	pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
	ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
	return 0;
}

static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	u8 val, oval;

	pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
	val = oval & ~VIA8233_SPDIF_DX3;
	if (ucontrol->value.integer.value[0])
		val |= VIA8233_SPDIF_DX3;
	/* save the spdif flag for rate filtering */
	chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
	if (val != oval) {
		pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
		return 1;
	}
	return 0;
}

static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
	.name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.info = snd_via8233_dxs3_spdif_info,
	.get = snd_via8233_dxs3_spdif_get,
	.put = snd_via8233_dxs3_spdif_put,
};

static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
	return 0;
}

static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);

	ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
	ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
	return 0;
}

static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
	ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
	return 0;
}

static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
	unsigned long port = chip->port + 0x10 * idx;
	unsigned char val;
	int i, change = 0;

	for (i = 0; i < 2; i++) {
		val = ucontrol->value.integer.value[i];
		if (val > VIA_DXS_MAX_VOLUME)
			val = VIA_DXS_MAX_VOLUME;
		val = VIA_DXS_MAX_VOLUME - val;
		change |= val != chip->playback_volume[idx][i];
		if (change) {
			chip->playback_volume[idx][i] = val;
			outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
		}
	}
	return change;
}

static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{
	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
	unsigned int idx;
	unsigned char val;
	int i, change = 0;

	for (i = 0; i < 2; i++) {
		val = ucontrol->value.integer.value[i];
		if (val > VIA_DXS_MAX_VOLUME)
			val = VIA_DXS_MAX_VOLUME;
		val = VIA_DXS_MAX_VOLUME - val;
		if (val != chip->playback_volume_c[i]) {
			change = 1;
			chip->playback_volume_c[i] = val;
			for (idx = 0; idx < 4; idx++) {
				unsigned long port = chip->port + 0x10 * idx;
				chip->playback_volume[idx][i] = val;
				outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
			}
		}
	}
	return change;
}

static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -9450, 150, 1);

static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
	.name = "PCM Playback Volume",
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
	.info = snd_via8233_dxs_volume_info,
	.get = snd_via8233_pcmdxs_volume_get,
	.put = snd_via8233_pcmdxs_volume_put,
	.tlv = { .p = db_scale_dxs }
};

static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
	.name = "VIA DXS Playback Volume",
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
	.count = 4,
	.info = snd_via8233_dxs_volume_info,
	.get = snd_via8233_dxs_volume_get,
	.put = snd_via8233_dxs_volume_put,
	.tlv = { .p = db_scale_dxs }
};

/*
 */

static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
{
	struct via82xx *chip = bus->private_data;
	chip->ac97_bus = NULL;
}

static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
{
	struct via82xx *chip = ac97->private_data;
	chip->ac97 = NULL;
}

static struct ac97_quirk ac97_quirks[] = {
	{
		.subvendor = 0x1106,
		.subdevice = 0x4161,
		.codec_id = 0x56494161, /* VT1612A */
		.name = "Soltek SL-75DRV5",
		.type = AC97_TUNE_NONE
	},
	{	/* FIXME: which codec? */
		.subvendor = 0x1106,
		.subdevice = 0x4161,
		.name = "ASRock K7VT2",
		.type = AC97_TUNE_HP_ONLY
	},
	{
		.subvendor = 0x1019,
		.subdevice = 0x0a81,
		.name = "ECS K7VTA3",
		.type = AC97_TUNE_HP_ONLY