phase.c

LINUX 2.6.17.4的源码

	uinfo->count = voices;
	uinfo->value.integer.min = 0;		/* mute (-101dB) */
	uinfo->value.integer.max = 0x7F;	/* 0dB */
	return 0;
}

static int wm_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int i, ofs, voices;

	voices = kcontrol->private_value >> 8;
	ofs = kcontrol->private_value & 0xff;
	for (i = 0; i < voices; i++)
		ucontrol->value.integer.value[i] = ice->spec.phase28.vol[ofs+i] & ~WM_VOL_MUTE;
	return 0;
}

static int wm_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int i, idx, ofs, voices;
	int change = 0;

	voices = kcontrol->private_value >> 8;
	ofs = kcontrol->private_value & 0xff;
	snd_ice1712_save_gpio_status(ice);
	for (i = 0; i < voices; i++) {
		idx  = WM_DAC_ATTEN + ofs + i;
		if (ucontrol->value.integer.value[i] != ice->spec.phase28.vol[ofs+i]) {
			ice->spec.phase28.vol[ofs+i] &= WM_VOL_MUTE;
			ice->spec.phase28.vol[ofs+i] |= ucontrol->value.integer.value[i];
			wm_set_vol(ice, idx, ice->spec.phase28.vol[ofs+i],
				   ice->spec.phase28.master[i]);
			change = 1;
		}
	}
	snd_ice1712_restore_gpio_status(ice);
	return change;
}

/*
 * WM8770 mute control
 */
static int wm_mute_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) {
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = kcontrol->private_value >> 8;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int wm_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int voices, ofs, i;

	voices = kcontrol->private_value >> 8;
	ofs = kcontrol->private_value & 0xFF;

	for (i = 0; i < voices; i++)
		ucontrol->value.integer.value[i] = (ice->spec.phase28.vol[ofs+i] & WM_VOL_MUTE) ? 0 : 1;
	return 0;
}

static int wm_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int change = 0, voices, ofs, i;

	voices = kcontrol->private_value >> 8;
	ofs = kcontrol->private_value & 0xFF;

	snd_ice1712_save_gpio_status(ice);
	for (i = 0; i < voices; i++) {
		int val = (ice->spec.phase28.vol[ofs + i] & WM_VOL_MUTE) ? 0 : 1;
		if (ucontrol->value.integer.value[i] != val) {
			ice->spec.phase28.vol[ofs + i] &= ~WM_VOL_MUTE;
			ice->spec.phase28.vol[ofs + i] |=
				ucontrol->value.integer.value[i] ? 0 : WM_VOL_MUTE;
			wm_set_vol(ice, ofs + i, ice->spec.phase28.vol[ofs + i],
				   ice->spec.phase28.master[i]);
			change = 1;
		}
	}
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/*
 * WM8770 master mute control
 */
static int wm_master_mute_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) {
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int wm_master_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = (ice->spec.phase28.master[0] & WM_VOL_MUTE) ? 0 : 1;
	ucontrol->value.integer.value[1] = (ice->spec.phase28.master[1] & WM_VOL_MUTE) ? 0 : 1;
	return 0;
}

static int wm_master_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int change = 0, i;

	snd_ice1712_save_gpio_status(ice);
	for (i = 0; i < 2; i++) {
		int val = (ice->spec.phase28.master[i] & WM_VOL_MUTE) ? 0 : 1;
		if (ucontrol->value.integer.value[i] != val) {
			int dac;
			ice->spec.phase28.master[i] &= ~WM_VOL_MUTE;
			ice->spec.phase28.master[i] |=
				ucontrol->value.integer.value[i] ? 0 : WM_VOL_MUTE;
			for (dac = 0; dac < ice->num_total_dacs; dac += 2)
				wm_set_vol(ice, WM_DAC_ATTEN + dac + i,
					   ice->spec.phase28.vol[dac + i],
					   ice->spec.phase28.master[i]);
			change = 1;
		}
	}
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/* digital master volume */
#define PCM_0dB 0xff
#define PCM_RES 128	/* -64dB */
#define PCM_MIN (PCM_0dB - PCM_RES)
static int wm_pcm_vol_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;		/* mute (-64dB) */
	uinfo->value.integer.max = PCM_RES;	/* 0dB */
	return 0;
}

static int wm_pcm_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	mutex_lock(&ice->gpio_mutex);
	val = wm_get(ice, WM_DAC_DIG_MASTER_ATTEN) & 0xff;
	val = val > PCM_MIN ? (val - PCM_MIN) : 0;
	ucontrol->value.integer.value[0] = val;
	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int wm_pcm_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short ovol, nvol;
	int change = 0;

	snd_ice1712_save_gpio_status(ice);
	nvol = ucontrol->value.integer.value[0];
	nvol = (nvol ? (nvol + PCM_MIN) : 0) & 0xff;
	ovol = wm_get(ice, WM_DAC_DIG_MASTER_ATTEN) & 0xff;
	if (ovol != nvol) {
		wm_put(ice, WM_DAC_DIG_MASTER_ATTEN, nvol); /* prelatch */
		wm_put_nocache(ice, WM_DAC_DIG_MASTER_ATTEN, nvol | 0x100); /* update */
		change = 1;
	}
	snd_ice1712_restore_gpio_status(ice);
	return change;
}

/*
 */
static int phase28_mono_bool_info(struct snd_kcontrol *k, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

/*
 * Deemphasis
 */
#define phase28_deemp_info	phase28_mono_bool_info

static int phase28_deemp_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	ucontrol->value.integer.value[0] = (wm_get(ice, WM_DAC_CTRL2) & 0xf) == 0xf;
	return 0;
}

static int phase28_deemp_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int temp, temp2;
	temp2 = temp = wm_get(ice, WM_DAC_CTRL2);
	if (ucontrol->value.integer.value[0])
		temp |= 0xf;
	else
		temp &= ~0xf;
	if (temp != temp2) {
		wm_put(ice, WM_DAC_CTRL2, temp);
		return 1;
	}
	return 0;
}

/*
 * ADC Oversampling
 */
static int phase28_oversampling_info(struct snd_kcontrol *k, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = { "128x", "64x"	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;

	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);

        return 0;
}

static int phase28_oversampling_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	ucontrol->value.enumerated.item[0] = (wm_get(ice, WM_MASTER) & 0x8) == 0x8;
	return 0;
}

static int phase28_oversampling_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	int temp, temp2;
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	temp2 = temp = wm_get(ice, WM_MASTER);

	if (ucontrol->value.enumerated.item[0])
		temp |= 0x8;
	else
		temp &= ~0x8;

	if (temp != temp2) {
		wm_put(ice, WM_MASTER, temp);
		return 1;
	}
	return 0;
}

static struct snd_kcontrol_new phase28_dac_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Master Playback Switch",
		.info = wm_master_mute_info,
		.get = wm_master_mute_get,
		.put = wm_master_mute_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Master Playback Volume",
		.info = wm_master_vol_info,
		.get = wm_master_vol_get,
		.put = wm_master_vol_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Front Playback Switch",
		.info = wm_mute_info,
		.get = wm_mute_get,
		.put = wm_mute_put,
		.private_value = (2 << 8) | 0
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Front Playback Volume",
		.info = wm_vol_info,
		.get = wm_vol_get,
		.put = wm_vol_put,
		.private_value = (2 << 8) | 0
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Rear Playback Switch",
		.info = wm_mute_info,
		.get = wm_mute_get,
		.put = wm_mute_put,
		.private_value = (2 << 8) | 2
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Rear Playback Volume",
		.info = wm_vol_info,
		.get = wm_vol_get,
		.put = wm_vol_put,
		.private_value = (2 << 8) | 2
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Center Playback Switch",
		.info = wm_mute_info,
		.get = wm_mute_get,
		.put = wm_mute_put,
		.private_value = (1 << 8) | 4
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Center Playback Volume",
		.info = wm_vol_info,
		.get = wm_vol_get,
		.put = wm_vol_put,
		.private_value = (1 << 8) | 4
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "LFE Playback Switch",
		.info = wm_mute_info,
		.get = wm_mute_get,
		.put = wm_mute_put,
		.private_value = (1 << 8) | 5
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "LFE Playback Volume",
		.info = wm_vol_info,
		.get = wm_vol_get,
		.put = wm_vol_put,
		.private_value = (1 << 8) | 5
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Side Playback Switch",
		.info = wm_mute_info,
		.get = wm_mute_get,
		.put = wm_mute_put,
		.private_value = (2 << 8) | 6
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Side Playback Volume",
		.info = wm_vol_info,
		.get = wm_vol_get,
		.put = wm_vol_put,
		.private_value = (2 << 8) | 6
	}
};

static struct snd_kcontrol_new wm_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "PCM Playback Switch",
		.info = wm_pcm_mute_info,
		.get = wm_pcm_mute_get,
		.put = wm_pcm_mute_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "PCM Playback Volume",
		.info = wm_pcm_vol_info,
		.get = wm_pcm_vol_get,
		.put = wm_pcm_vol_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "DAC Deemphasis Switch",
		.info = phase28_deemp_info,
		.get = phase28_deemp_get,
		.put = phase28_deemp_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "ADC Oversampling",
		.info = phase28_oversampling_info,
		.get = phase28_oversampling_get,
		.put = phase28_oversampling_put
	}
};

static int __devinit phase28_add_controls(struct snd_ice1712 *ice)
{
	unsigned int i, counts;
	int err;

	counts = ARRAY_SIZE(phase28_dac_controls);
	for (i = 0; i < counts; i++) {
		err = snd_ctl_add(ice->card, snd_ctl_new1(&phase28_dac_controls[i], ice));
		if (err < 0)
			return err;
	}

	for (i = 0; i < ARRAY_SIZE(wm_controls); i++) {
		err = snd_ctl_add(ice->card, snd_ctl_new1(&wm_controls[i], ice));
		if (err < 0)
			return err;
	}

	return 0;
}

struct snd_ice1712_card_info snd_vt1724_phase_cards[] __devinitdata = {
	{
		.subvendor = VT1724_SUBDEVICE_PHASE22,
		.name = "Terratec PHASE 22",
		.model = "phase22",
		.chip_init = phase22_init,
		.build_controls = phase22_add_controls,
		.eeprom_size = sizeof(phase22_eeprom),
		.eeprom_data = phase22_eeprom,
	},
	{
		.subvendor = VT1724_SUBDEVICE_PHASE28,
		.name = "Terratec PHASE 28",
		.model = "phase28",
		.chip_init = phase28_init,
		.build_controls = phase28_add_controls,
		.eeprom_size = sizeof(phase28_eeprom),
		.eeprom_data = phase28_eeprom,
	},
	{ } /* terminator */
};