aureon.c

LINUX 2.6.17.4的源码

		tmp |= AUREON_SPI_CLK;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(1);

		tmp &= ~AUREON_SPI_CLK;
		snd_ice1712_gpio_write(ice, tmp);
		udelay(1);
	}

	for (j=0; j<size; j++) {
		unsigned char outdata = 0;
		for (i=7; i>=0; i--) {
			tmp = snd_ice1712_gpio_read(ice);
			outdata <<= 1;
			outdata |= (tmp & AUREON_SPI_MISO) ? 1 : 0;
			udelay(1);

			tmp |= AUREON_SPI_CLK;
			snd_ice1712_gpio_write(ice, tmp);
			udelay(1);

			tmp &= ~AUREON_SPI_CLK;
			snd_ice1712_gpio_write(ice, tmp);
			udelay(1);
		}
		buffer[j] = outdata;
	}

	tmp |= cs;
	snd_ice1712_gpio_write(ice, tmp);
}

static unsigned char aureon_cs8415_get(struct snd_ice1712 *ice, int reg) {
	unsigned char val;
	aureon_spi_write(ice, AUREON_CS8415_CS, 0x2000 | reg, 16);
	aureon_spi_read(ice, AUREON_CS8415_CS, 0x21, 8, &val, 1);
	return val;
}

static void aureon_cs8415_read(struct snd_ice1712 *ice, int reg, unsigned char *buffer, int size) {
	aureon_spi_write(ice, AUREON_CS8415_CS, 0x2000 | reg, 16);
	aureon_spi_read(ice, AUREON_CS8415_CS, 0x21, 8, buffer, size);
}

static void aureon_cs8415_put(struct snd_ice1712 *ice, int reg, unsigned char val) {
	aureon_spi_write(ice, AUREON_CS8415_CS, 0x200000 | (reg << 8) | val, 24);
}

/*
 * get the current register value of WM codec
 */
static unsigned short wm_get(struct snd_ice1712 *ice, int reg)
{
	reg <<= 1;
	return ((unsigned short)ice->akm[0].images[reg] << 8) |
		ice->akm[0].images[reg + 1];
}

/*
 * set the register value of WM codec
 */
static void wm_put_nocache(struct snd_ice1712 *ice, int reg, unsigned short val)
{
	aureon_spi_write(ice,
			(ice->eeprom.subvendor == VT1724_SUBDEVICE_PRODIGY71LT ? PRODIGY_WM_CS : AUREON_WM_CS),
			(reg << 9) | (val & 0x1ff), 16);
}

/*
 * set the register value of WM codec and remember it
 */
static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
{
	wm_put_nocache(ice, reg, val);
	reg <<= 1;
	ice->akm[0].images[reg] = val >> 8;
	ice->akm[0].images[reg + 1] = val;
}

/*
 */
static int aureon_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;
}

/*
 * AC'97 master playback mute controls (Mute on WM8770 chip)
 */
#define aureon_ac97_mmute_info	aureon_mono_bool_info

static int aureon_ac97_mmute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);

	mutex_lock(&ice->gpio_mutex);

	ucontrol->value.integer.value[0] = (wm_get(ice, WM_OUT_MUX1) >> 1) & 0x01;

	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int aureon_ac97_mmute_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;
	
	snd_ice1712_save_gpio_status(ice);
	
	ovol = wm_get(ice, WM_OUT_MUX1);
	nvol = (ovol & ~0x02) | (ucontrol->value.integer.value[0] ? 0x02 : 0x00);
	if ((change = (ovol != nvol)))
		wm_put(ice, WM_OUT_MUX1, nvol);
		
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/*
 * Logarithmic volume values for WM8770
 * Computed as 20 * Log10(255 / x)
 */
static unsigned char wm_vol[256] = {
	127, 48, 42, 39, 36, 34, 33, 31, 30, 29, 28, 27, 27, 26, 25, 25, 24, 24, 23,
	23, 22, 22, 21, 21, 21, 20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 17, 17, 17,
	17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13,
	13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11,
	11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8,
	8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6,
	6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
	5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3,
	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0
};

#define WM_VOL_MAX	(sizeof(wm_vol) - 1)
#define WM_VOL_MUTE	0x8000

static void wm_set_vol(struct snd_ice1712 *ice, unsigned int index, unsigned short vol, unsigned short master)
{
	unsigned char nvol;
	
	if ((master & WM_VOL_MUTE) || (vol & WM_VOL_MUTE))
		nvol = 0;
	else
		nvol = 127 - wm_vol[(((vol & ~WM_VOL_MUTE) * (master & ~WM_VOL_MUTE)) / 127) & WM_VOL_MAX];
	
	wm_put(ice, index, nvol);
	wm_put_nocache(ice, index, 0x180 | nvol);
}

/*
 * DAC mute control
 */
#define wm_pcm_mute_info	aureon_mono_bool_info

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

	mutex_lock(&ice->gpio_mutex);
	ucontrol->value.integer.value[0] = (wm_get(ice, WM_MUTE) & 0x10) ? 0 : 1;
	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int wm_pcm_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short nval, oval;
	int change;

	snd_ice1712_save_gpio_status(ice);
	oval = wm_get(ice, WM_MUTE);
	nval = (oval & ~0x10) | (ucontrol->value.integer.value[0] ? 0 : 0x10);
	if ((change = (nval != oval)))
		wm_put(ice, WM_MUTE, nval);
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/*
 * Master volume attenuation mixer control
 */
static int wm_master_vol_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 = WM_VOL_MAX;
	return 0;
}

static int wm_master_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int i;
	for (i=0; i<2; i++)
		ucontrol->value.integer.value[i] = ice->spec.aureon.master[i] & ~WM_VOL_MUTE;
	return 0;
}

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

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

/*
 * DAC volume attenuation mixer control
 */
static int wm_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	int voices = kcontrol->private_value >> 8;
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	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.aureon.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.aureon.vol[ofs+i]) {
			ice->spec.aureon.vol[ofs+i] &= WM_VOL_MUTE;
			ice->spec.aureon.vol[ofs+i] |= ucontrol->value.integer.value[i];
			wm_set_vol(ice, idx, ice->spec.aureon.vol[ofs+i],
				   ice->spec.aureon.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.aureon.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.aureon.vol[ofs + i] & WM_VOL_MUTE) ? 0 : 1;
		if (ucontrol->value.integer.value[i] != val) {
			ice->spec.aureon.vol[ofs + i] &= ~WM_VOL_MUTE;
			ice->spec.aureon.vol[ofs + i] |=
				ucontrol->value.integer.value[i] ? 0 : WM_VOL_MUTE;
			wm_set_vol(ice, ofs + i, ice->spec.aureon.vol[ofs + i],
				   ice->spec.aureon.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.aureon.master[0] & WM_VOL_MUTE) ? 0 : 1;
	ucontrol->value.integer.value[1] = (ice->spec.aureon.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.aureon.master[i] & WM_VOL_MUTE) ? 0 : 1;
		if (ucontrol->value.integer.value[i] != val) {
			int dac;
			ice->spec.aureon.master[i] &= ~WM_VOL_MUTE;
			ice->spec.aureon.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.aureon.vol[dac + i],
					   ice->spec.aureon.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;
}

/*
 * ADC mute control
 */
static int wm_adc_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_adc_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short val;
	int i;

	mutex_lock(&ice->gpio_mutex);
	for (i = 0; i < 2; i++) {
		val = wm_get(ice, WM_ADC_GAIN + i);
		ucontrol->value.integer.value[i] = ~val>>5 & 0x1;
	}
	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

static int wm_adc_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned short new, old;
	int i, change = 0;

	snd_ice1712_save_gpio_status(ice);
	for (i = 0; i < 2; i++) {
		old = wm_get(ice, WM_ADC_GAIN + i);
		new = (~ucontrol->value.integer.value[i]<<5&0x20) | (old&~0x20);
		if (new != old) {
			wm_put(ice, WM_ADC_GAIN + i, new);
			change = 1;
		}
	}
	snd_ice1712_restore_gpio_status(ice);

	return change;
}

/*
 * ADC gain mixer control
 */
static int wm_adc_vol_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;		/* -12dB */
	uinfo->value.integer.max = 0x1f;	/* 19dB */
	return 0;
}

static int wm_adc_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int i, idx;
	unsigned short vol;

	mutex_lock(&ice->gpio_mutex);
	for (i = 0; i < 2; i++) {
		idx = WM_ADC_GAIN + i;
		vol = wm_get(ice, idx) & 0x1f;
		ucontrol->value.integer.value[i] = vol;
	}
	mutex_unlock(&ice->gpio_mutex);
	return 0;
}

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

	snd_ice1712_save_gpio_status(ice);
	for (i = 0; i < 2; i++) {
		idx  = WM_ADC_GAIN + i;
		nvol = ucontrol->value.integer.value[i];
		ovol = wm_get(ice, idx);
		if ((ovol & 0x1f) != nvol) {
			wm_put(ice, idx, nvol | (ovol & ~0x1f));
			change = 1;
		}
	}
	snd_ice1712_restore_gpio_status(ice);
	return change;
}

/*
 * ADC input mux mixer control
 */
static int wm_adc_mux_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[] = {
		"CD",		//AIN1
		"Aux",		//AIN2
		"Line",		//AIN3
		"Mic",		//AIN4
		"AC97"		//AIN5
	};
	static char *universe_texts[] = {
		"Aux1",		//AIN1
		"CD",		//AIN2
		"Phono",	//AIN3
		"Line",		//AIN4
		"Aux2",		//AIN5
		"Mic",		//AIN6
		"Aux3",		//AIN7
		"AC97"		//AIN8
	};