ac97_patch.c

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	if (ac97->id == 0x414c4780) /* ALC658 */
		val &= ~(1 << 1); /* Pin 47 is spdif input pin */
	else /* ALC655 */
		val |= (1 << 1); /* Pin 47 is spdif input pin */
	val &= ~(1 << 12); /* vref enable */
	snd_ac97_write_cache(ac97, 0x7a, val);
	/* set default: spdif-in enabled,
	   spdif-in monitor off, spdif-in PCM off
	   center on mic off, surround on line-in off
	   duplicate front off
	*/
	snd_ac97_write_cache(ac97, AC97_ALC650_MULTICH, 1<<15);

	/* full DAC volume */
	snd_ac97_write_cache(ac97, AC97_ALC650_SURR_DAC_VOL, 0x0808);
	snd_ac97_write_cache(ac97, AC97_ALC650_LFE_DAC_VOL, 0x0808);
	return 0;
}


#define AC97_ALC850_JACK_SELECT	0x76
#define AC97_ALC850_MISC1	0x7a

static int ac97_alc850_surround_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = ((ac97->regs[AC97_ALC850_JACK_SELECT] >> 12) & 7) == 2;
        return 0;
}

static int ac97_alc850_surround_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

	/* SURR 1kOhm (bit4), Amp (bit5) */
	snd_ac97_update_bits(ac97, AC97_ALC850_MISC1, (1<<4)|(1<<5),
			     ucontrol->value.integer.value[0] ? (1<<5) : (1<<4));
	/* LINE-IN = 0, SURROUND = 2 */
	return snd_ac97_update_bits(ac97, AC97_ALC850_JACK_SELECT, 7 << 12,
				    ucontrol->value.integer.value[0] ? (2<<12) : (0<<12));
}

static int ac97_alc850_mic_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
        ucontrol->value.integer.value[0] = ((ac97->regs[AC97_ALC850_JACK_SELECT] >> 4) & 7) == 2;
        return 0;
}

static int ac97_alc850_mic_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t * ucontrol)
{
        ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

	/* Vref disable (bit12), 1kOhm (bit13) */
	snd_ac97_update_bits(ac97, AC97_ALC850_MISC1, (1<<12)|(1<<13),
			     ucontrol->value.integer.value[0] ? (1<<12) : (1<<13));
	/* MIC-IN = 1, CENTER-LFE = 2 */
	return snd_ac97_update_bits(ac97, AC97_ALC850_JACK_SELECT, 7 << 4,
				    ucontrol->value.integer.value[0] ? (2<<4) : (1<<4));
}

static const snd_kcontrol_new_t snd_ac97_controls_alc850[] = {
	AC97_PAGE_SINGLE("Duplicate Front", AC97_ALC650_MULTICH, 0, 1, 0, 0),
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Line-In As Surround",
		.info = snd_ac97_info_volsw,
		.get = ac97_alc850_surround_get,
		.put = ac97_alc850_surround_put,
		.private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Mic As Center/LFE",
		.info = snd_ac97_info_volsw,
		.get = ac97_alc850_mic_get,
		.put = ac97_alc850_mic_put,
		.private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
	},

};

static int patch_alc850_specific(ac97_t *ac97)
{
	int err;

	if ((err = patch_build_controls(ac97, snd_ac97_controls_alc850, ARRAY_SIZE(snd_ac97_controls_alc850))) < 0)
		return err;
	if (ac97->ext_id & AC97_EI_SPDIF) {
		if ((err = patch_build_controls(ac97, snd_ac97_spdif_controls_alc655, ARRAY_SIZE(snd_ac97_spdif_controls_alc655))) < 0)
			return err;
	}
	return 0;
}

static struct snd_ac97_build_ops patch_alc850_ops = {
	.build_specific	= patch_alc850_specific
};

int patch_alc850(ac97_t *ac97)
{
	ac97->build_ops = &patch_alc850_ops;

	ac97->spec.dev_flags = 0; /* for IEC958 playback route - ALC655 compatible */

	/* assume only page 0 for writing cache */
	snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, AC97_PAGE_VENDOR);

	/* adjust default values */
	/* set default: spdif-in enabled,
	   spdif-in monitor off, spdif-in PCM off
	   center on mic off, surround on line-in off
	   duplicate front off
	*/
	snd_ac97_write_cache(ac97, AC97_ALC650_MULTICH, 1<<15);
	/* SURR_OUT: on, Surr 1kOhm: on, Surr Amp: off, Front 1kOhm: off
	 * Front Amp: on, Vref: enable, Center 1kOhm: on, Mix: on
	 */
	snd_ac97_write_cache(ac97, 0x7a, (1<<1)|(1<<4)|(0<<5)|(1<<6)|
			     (1<<7)|(0<<12)|(1<<13)|(0<<14));
	/* detection UIO2,3: all path floating, UIO3: MIC, Vref2: disable,
	 * UIO1: FRONT, Vref3: disable, UIO3: LINE, Front-Mic: mute
	 */
	snd_ac97_write_cache(ac97, 0x76, (0<<0)|(0<<2)|(1<<4)|(1<<7)|(2<<8)|
			     (1<<11)|(0<<12)|(1<<15));

	/* full DAC volume */
	snd_ac97_write_cache(ac97, AC97_ALC650_SURR_DAC_VOL, 0x0808);
	snd_ac97_write_cache(ac97, AC97_ALC650_LFE_DAC_VOL, 0x0808);
	return 0;
}


/*
 * C-Media CM97xx codecs
 */
static const snd_kcontrol_new_t snd_ac97_cm9738_controls[] = {
	AC97_SINGLE("Line-In As Surround", AC97_CM9738_VENDOR_CTRL, 10, 1, 0),
	AC97_SINGLE("Duplicate Front", AC97_CM9738_VENDOR_CTRL, 13, 1, 0),
};

static int patch_cm9738_specific(ac97_t * ac97)
{
	return patch_build_controls(ac97, snd_ac97_cm9738_controls, ARRAY_SIZE(snd_ac97_cm9738_controls));
}

static struct snd_ac97_build_ops patch_cm9738_ops = {
	.build_specific	= patch_cm9738_specific
};

int patch_cm9738(ac97_t * ac97)
{
	ac97->build_ops = &patch_cm9738_ops;
	/* FIXME: can anyone confirm below? */
	/* CM9738 has no PCM volume although the register reacts */
	ac97->flags |= AC97_HAS_NO_PCM_VOL;
	snd_ac97_write_cache(ac97, AC97_PCM, 0x8000);

	return 0;
}

static int snd_ac97_cmedia_spdif_playback_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[] = { "Analog", "Digital" };

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item > 1)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_ac97_cmedia_spdif_playback_source_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	val = ac97->regs[AC97_CM9739_SPDIF_CTRL];
	ucontrol->value.enumerated.item[0] = (val >> 1) & 0x01;
	return 0;
}

static int snd_ac97_cmedia_spdif_playback_source_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);

	return snd_ac97_update_bits(ac97, AC97_CM9739_SPDIF_CTRL,
				    0x01 << 1, 
				    (ucontrol->value.enumerated.item[0] & 0x01) << 1);
}

static const snd_kcontrol_new_t snd_ac97_cm9739_controls_spdif[] = {
	/* BIT 0: SPDI_EN - always true */
	{ /* BIT 1: SPDIFS */
		.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
		.name	= SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source",
		.info	= snd_ac97_cmedia_spdif_playback_source_info,
		.get	= snd_ac97_cmedia_spdif_playback_source_get,
		.put	= snd_ac97_cmedia_spdif_playback_source_put,
	},
	/* BIT 2: IG_SPIV */
	AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,NONE) "Valid Switch", AC97_CM9739_SPDIF_CTRL, 2, 1, 0),
	/* BIT 3: SPI2F */
	AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,NONE) "Monitor", AC97_CM9739_SPDIF_CTRL, 3, 1, 0), 
	/* BIT 4: SPI2SDI */
	AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), AC97_CM9739_SPDIF_CTRL, 4, 1, 0),
	/* BIT 8: SPD32 - 32bit SPDIF - not supported yet */
};

static int snd_ac97_cm9739_center_mic_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	if (ac97->regs[AC97_CM9739_MULTI_CHAN] & 0x1000)
		ucontrol->value.integer.value[0] = 1;
	else
		ucontrol->value.integer.value[0] = 0;
	return 0;
}

static int snd_ac97_cm9739_center_mic_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	return snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x3000,
				    ucontrol->value.integer.value[0] ? 
				    0x1000 : 0x2000);
}

static const snd_kcontrol_new_t snd_ac97_cm9739_controls[] = {
	AC97_SINGLE("Line-In As Surround", AC97_CM9739_MULTI_CHAN, 10, 1, 0),
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Mic As Center/LFE",
		.info = snd_ac97_info_volsw,
		.get = snd_ac97_cm9739_center_mic_get,
		.put = snd_ac97_cm9739_center_mic_put,
		.private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
	},
};

static int patch_cm9739_specific(ac97_t * ac97)
{
	return patch_build_controls(ac97, snd_ac97_cm9739_controls, ARRAY_SIZE(snd_ac97_cm9739_controls));
}

static int patch_cm9739_post_spdif(ac97_t * ac97)
{
	return patch_build_controls(ac97, snd_ac97_cm9739_controls_spdif, ARRAY_SIZE(snd_ac97_cm9739_controls_spdif));
}

static struct snd_ac97_build_ops patch_cm9739_ops = {
	.build_specific	= patch_cm9739_specific,
	.build_post_spdif = patch_cm9739_post_spdif
};

int patch_cm9739(ac97_t * ac97)
{
	unsigned short val;

	ac97->build_ops = &patch_cm9739_ops;

	/* CM9739/A has no Master and PCM volume although the register reacts */
	ac97->flags |= AC97_HAS_NO_MASTER_VOL | AC97_HAS_NO_PCM_VOL;
	snd_ac97_write_cache(ac97, AC97_MASTER, 0x8000);
	snd_ac97_write_cache(ac97, AC97_PCM, 0x8000);

	/* check spdif */
	val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
	if (val & AC97_EA_SPCV) {
		/* enable spdif in */
		snd_ac97_write_cache(ac97, AC97_CM9739_SPDIF_CTRL,
				     snd_ac97_read(ac97, AC97_CM9739_SPDIF_CTRL) | 0x01);
		ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_48000; /* 48k only */
	} else {
		ac97->ext_id &= ~AC97_EI_SPDIF; /* disable extended-id */
		ac97->rates[AC97_RATES_SPDIF] = 0;
	}

	/* set-up multi channel */
	/* bit 14: 0 = SPDIF, 1 = EAPD */
	/* bit 13: enable internal vref output for mic */
	/* bit 12: disable center/lfe (swithable) */
	/* bit 10: disable surround/line (switchable) */
	/* bit 9: mix 2 surround off */
	/* bit 4: undocumented; 0 mutes the CM9739A, which defaults to 1 */
	/* bit 3: undocumented; surround? */
	/* bit 0: dB */
	val = snd_ac97_read(ac97, AC97_CM9739_MULTI_CHAN) & (1 << 4);
	val |= (1 << 3);
	val |= (1 << 13);
	if (! (ac97->ext_id & AC97_EI_SPDIF))
		val |= (1 << 14);
	snd_ac97_write_cache(ac97, AC97_CM9739_MULTI_CHAN, val);

	/* FIXME: set up GPIO */
	snd_ac97_write_cache(ac97, 0x70, 0x0100);
	snd_ac97_write_cache(ac97, 0x72, 0x0020);
	/* Special exception for ASUS W1000/CMI9739. It does not have an SPDIF in. */
	if (ac97->pci &&
	     ac97->subsystem_vendor == 0x1043 &&
	     ac97->subsystem_device == 0x1843) {
		snd_ac97_write_cache(ac97, AC97_CM9739_SPDIF_CTRL,
			snd_ac97_read(ac97, AC97_CM9739_SPDIF_CTRL) & ~0x01);
		snd_ac97_write_cache(ac97, AC97_CM9739_MULTI_CHAN,
			snd_ac97_read(ac97, AC97_CM9739_MULTI_CHAN) | (1 << 14));
	}

	return 0;
}

#define AC97_CM9761_MULTI_CHAN	0x64
#define AC97_CM9761_SPDIF_CTRL	0x6c

static int snd_ac97_cm9761_linein_rear_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	if (ac97->regs[AC97_CM9739_MULTI_CHAN] & 0x0400)
		ucontrol->value.integer.value[0] = 1;
	else
		ucontrol->value.integer.value[0] = 0;
	return 0;
}

static int snd_ac97_cm9761_linein_rear_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short vals[2][2] = {
		{ 0x0008, 0x0400 }, /* off, on */
		{ 0x0000, 0x0408 }, /* off, on (9761-82 rev.B) */
	};
	return snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x0408,
				    vals[ac97->spec.dev_flags][!!ucontrol->value.integer.value[0]]);
}

static int snd_ac97_cm9761_center_mic_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	if (ac97->regs[AC97_CM9739_MULTI_CHAN] & 0x1000)
		ucontrol->value.integer.value[0] = 1;
	else
		ucontrol->value.integer.value[0] = 0;
	if (ac97->spec.dev_flags) /* 9761-82 rev.B */
		ucontrol->value.integer.value[0] = !ucontrol->value.integer.value[0];
	return 0;
}

static int snd_ac97_cm9761_center_mic_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	ac97_t *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short vals[2][2] = {
		{ 0x2000, 0x1880 }, /* off, on */
		{ 0x1000, 0x2880 }, /* off, on (9761-82 rev.B) */
	};
	return snd_ac97_update_bits(ac97, AC97_CM9739_MULTI_CHAN, 0x3880,
				    vals[ac97->spec.dev_flags][!!ucontrol->value.integer.value[0]]);
}

static const snd_kcontrol_new_t snd_ac97_cm9761_controls[] = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Line-In As Surround",
		.info = snd_ac97_info_volsw,
		.get = snd_ac97_cm9761_linein_rear_get,
		.put = snd_ac97_cm9761_linein_rear_put,
		.private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Mic As Center/LFE",
		.info = snd_ac97_info_volsw,
		.get = snd_ac97_cm9761_center_mic_get,
		.put = snd_ac97_cm9761_center_mic_put,
		.private_value = AC97_SINGLE_VALUE(0, 0, 1, 0) /* only mask needed */
	},
};

static int patch_cm9761_specific(ac97_t * ac97)
{
	return patch_build_controls(ac97, snd_ac97_cm9761_controls, ARRAY_SIZE(snd_ac97_cm9761_controls));
}

static struct snd_ac97_build_ops patch_cm9761_ops = {
	.build_specific	= patch_cm9761_specific,
	.build_post_spdif = patch_cm9739_post_spdif /* hope it's identical... */
};

int patch_cm9761(ac97_t *ac97)
{
	unsigned short val;

	/* CM9761 has no Master and PCM volume although the register reacts */
	ac97->flags |= AC97_HAS_NO_MASTER_VOL | AC97_HAS_NO_PCM_VOL;
	snd_ac97_write_cache(ac97, AC97_MASTER, 0x8000);
	snd_ac97_write_cache(ac97, AC97_PCM, 0x8000);

	ac97->spec.dev_flags = 0; /* 1 = model 82 revision B */
	if (ac97->id == AC97_ID_CM9761_82) {
		unsigned short tmp;
		/* check page 1, reg 0x60 */
		val = snd_ac97_read(ac97, AC97_INT_PAGING);
		sn