ac97_patch.c

linux 内核源代码

	scfg = snd_ac97_read(ac97, AC97_AD_SERIAL_CFG);
	snd_ac97_write_cache(ac97, AC97_AD_SERIAL_CFG, scfg | 0x7000); /* select all codecs */
	ac97->res_table = ad1819_restbl;
	return 0;
}

static unsigned short patch_ad1881_unchained(struct snd_ac97 * ac97, int idx, unsigned short mask)
{
	unsigned short val;

	// test for unchained codec
	snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, mask);
	snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0000);	/* ID0C, ID1C, SDIE = off */
	val = snd_ac97_read(ac97, AC97_VENDOR_ID2);
	if ((val & 0xff40) != 0x5340)
		return 0;
	ac97->spec.ad18xx.unchained[idx] = mask;
	ac97->spec.ad18xx.id[idx] = val;
	ac97->spec.ad18xx.codec_cfg[idx] = 0x0000;
	return mask;
}

static int patch_ad1881_chained1(struct snd_ac97 * ac97, int idx, unsigned short codec_bits)
{
	static int cfg_bits[3] = { 1<<12, 1<<14, 1<<13 };
	unsigned short val;
	
	snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, cfg_bits[idx]);
	snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0004);	// SDIE
	val = snd_ac97_read(ac97, AC97_VENDOR_ID2);
	if ((val & 0xff40) != 0x5340)
		return 0;
	if (codec_bits)
		snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, codec_bits);
	ac97->spec.ad18xx.chained[idx] = cfg_bits[idx];
	ac97->spec.ad18xx.id[idx] = val;
	ac97->spec.ad18xx.codec_cfg[idx] = codec_bits ? codec_bits : 0x0004;
	return 1;
}

static void patch_ad1881_chained(struct snd_ac97 * ac97, int unchained_idx, int cidx1, int cidx2)
{
	// already detected?
	if (ac97->spec.ad18xx.unchained[cidx1] || ac97->spec.ad18xx.chained[cidx1])
		cidx1 = -1;
	if (ac97->spec.ad18xx.unchained[cidx2] || ac97->spec.ad18xx.chained[cidx2])
		cidx2 = -1;
	if (cidx1 < 0 && cidx2 < 0)
		return;
	// test for chained codecs
	snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
			     ac97->spec.ad18xx.unchained[unchained_idx]);
	snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0002);		// ID1C
	ac97->spec.ad18xx.codec_cfg[unchained_idx] = 0x0002;
	if (cidx1 >= 0) {
		if (cidx2 < 0)
			patch_ad1881_chained1(ac97, cidx1, 0);
		else if (patch_ad1881_chained1(ac97, cidx1, 0x0006))	// SDIE | ID1C
			patch_ad1881_chained1(ac97, cidx2, 0);
		else if (patch_ad1881_chained1(ac97, cidx2, 0x0006))	// SDIE | ID1C
			patch_ad1881_chained1(ac97, cidx1, 0);
	} else if (cidx2 >= 0) {
		patch_ad1881_chained1(ac97, cidx2, 0);
	}
}

static struct snd_ac97_build_ops patch_ad1881_build_ops = {
#ifdef CONFIG_PM
	.resume = ad18xx_resume
#endif
};

static int patch_ad1881(struct snd_ac97 * ac97)
{
	static const char cfg_idxs[3][2] = {
		{2, 1},
		{0, 2},
		{0, 1}
	};
	
	// patch for Analog Devices
	unsigned short codecs[3];
	unsigned short val;
	int idx, num;

	val = snd_ac97_read(ac97, AC97_AD_SERIAL_CFG);
	snd_ac97_write_cache(ac97, AC97_AD_SERIAL_CFG, val);
	codecs[0] = patch_ad1881_unchained(ac97, 0, (1<<12));
	codecs[1] = patch_ad1881_unchained(ac97, 1, (1<<14));
	codecs[2] = patch_ad1881_unchained(ac97, 2, (1<<13));

	if (! (codecs[0] || codecs[1] || codecs[2]))
		goto __end;

	for (idx = 0; idx < 3; idx++)
		if (ac97->spec.ad18xx.unchained[idx])
			patch_ad1881_chained(ac97, idx, cfg_idxs[idx][0], cfg_idxs[idx][1]);

	if (ac97->spec.ad18xx.id[1]) {
		ac97->flags |= AC97_AD_MULTI;
		ac97->scaps |= AC97_SCAP_SURROUND_DAC;
	}
	if (ac97->spec.ad18xx.id[2]) {
		ac97->flags |= AC97_AD_MULTI;
		ac97->scaps |= AC97_SCAP_CENTER_LFE_DAC;
	}

      __end:
	/* select all codecs */
	snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
	/* check if only one codec is present */
	for (idx = num = 0; idx < 3; idx++)
		if (ac97->spec.ad18xx.id[idx])
			num++;
	if (num == 1) {
		/* ok, deselect all ID bits */
		snd_ac97_write_cache(ac97, AC97_AD_CODEC_CFG, 0x0000);
		ac97->spec.ad18xx.codec_cfg[0] = 
			ac97->spec.ad18xx.codec_cfg[1] = 
			ac97->spec.ad18xx.codec_cfg[2] = 0x0000;
	}
	/* required for AD1886/AD1885 combination */
	ac97->ext_id = snd_ac97_read(ac97, AC97_EXTENDED_ID);
	if (ac97->spec.ad18xx.id[0]) {
		ac97->id &= 0xffff0000;
		ac97->id |= ac97->spec.ad18xx.id[0];
	}
	ac97->build_ops = &patch_ad1881_build_ops;
	return 0;
}

static const struct snd_kcontrol_new snd_ac97_controls_ad1885[] = {
	AC97_SINGLE("Digital Mono Direct", AC97_AD_MISC, 11, 1, 0),
	/* AC97_SINGLE("Digital Audio Mode", AC97_AD_MISC, 12, 1, 0), */ /* seems problematic */
	AC97_SINGLE("Low Power Mixer", AC97_AD_MISC, 14, 1, 0),
	AC97_SINGLE("Zero Fill DAC", AC97_AD_MISC, 15, 1, 0),
	AC97_SINGLE("Headphone Jack Sense", AC97_AD_JACK_SPDIF, 9, 1, 1), /* inverted */
	AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 8, 1, 1), /* inverted */
};

static const DECLARE_TLV_DB_SCALE(db_scale_6bit_6db_max, -8850, 150, 0);

static int patch_ad1885_specific(struct snd_ac97 * ac97)
{
	int err;

	if ((err = patch_build_controls(ac97, snd_ac97_controls_ad1885, ARRAY_SIZE(snd_ac97_controls_ad1885))) < 0)
		return err;
	reset_tlv(ac97, "Headphone Playback Volume",
		  db_scale_6bit_6db_max);
	return 0;
}

static struct snd_ac97_build_ops patch_ad1885_build_ops = {
	.build_specific = &patch_ad1885_specific,
#ifdef CONFIG_PM
	.resume = ad18xx_resume
#endif
};

static int patch_ad1885(struct snd_ac97 * ac97)
{
	patch_ad1881(ac97);
	/* This is required to deal with the Intel D815EEAL2 */
	/* i.e. Line out is actually headphone out from codec */

	/* set default */
	snd_ac97_write_cache(ac97, AC97_AD_MISC, 0x0404);

	ac97->build_ops = &patch_ad1885_build_ops;
	return 0;
}

static int patch_ad1886_specific(struct snd_ac97 * ac97)
{
	reset_tlv(ac97, "Headphone Playback Volume",
		  db_scale_6bit_6db_max);
	return 0;
}

static struct snd_ac97_build_ops patch_ad1886_build_ops = {
	.build_specific = &patch_ad1886_specific,
#ifdef CONFIG_PM
	.resume = ad18xx_resume
#endif
};

static int patch_ad1886(struct snd_ac97 * ac97)
{
	patch_ad1881(ac97);
	/* Presario700 workaround */
	/* for Jack Sense/SPDIF Register misetting causing */
	snd_ac97_write_cache(ac97, AC97_AD_JACK_SPDIF, 0x0010);
	ac97->build_ops = &patch_ad1886_build_ops;
	return 0;
}

/* MISC bits (AD1888/AD1980/AD1985 register 0x76) */
#define AC97_AD198X_MBC		0x0003	/* mic boost */
#define AC97_AD198X_MBC_20	0x0000	/* +20dB */
#define AC97_AD198X_MBC_10	0x0001	/* +10dB */
#define AC97_AD198X_MBC_30	0x0002	/* +30dB */
#define AC97_AD198X_VREFD	0x0004	/* VREF high-Z */
#define AC97_AD198X_VREFH	0x0008	/* 0=2.25V, 1=3.7V */
#define AC97_AD198X_VREF_0	0x000c	/* 0V (AD1985 only) */
#define AC97_AD198X_VREF_MASK	(AC97_AD198X_VREFH | AC97_AD198X_VREFD)
#define AC97_AD198X_VREF_SHIFT	2
#define AC97_AD198X_SRU		0x0010	/* sample rate unlock */
#define AC97_AD198X_LOSEL	0x0020	/* LINE_OUT amplifiers input select */
#define AC97_AD198X_2MIC	0x0040	/* 2-channel mic select */
#define AC97_AD198X_SPRD	0x0080	/* SPREAD enable */
#define AC97_AD198X_DMIX0	0x0100	/* downmix mode: */
					/*  0 = 6-to-4, 1 = 6-to-2 downmix */
#define AC97_AD198X_DMIX1	0x0200	/* downmix mode: 1 = enabled */
#define AC97_AD198X_HPSEL	0x0400	/* headphone amplifier input select */
#define AC97_AD198X_CLDIS	0x0800	/* center/lfe disable */
#define AC97_AD198X_LODIS	0x1000	/* LINE_OUT disable */
#define AC97_AD198X_MSPLT	0x2000	/* mute split */
#define AC97_AD198X_AC97NC	0x4000	/* AC97 no compatible mode */
#define AC97_AD198X_DACZ	0x8000	/* DAC zero-fill mode */

/* MISC 1 bits (AD1986 register 0x76) */
#define AC97_AD1986_MBC		0x0003	/* mic boost */
#define AC97_AD1986_MBC_20	0x0000	/* +20dB */
#define AC97_AD1986_MBC_10	0x0001	/* +10dB */
#define AC97_AD1986_MBC_30	0x0002	/* +30dB */
#define AC97_AD1986_LISEL0	0x0004	/* LINE_IN select bit 0 */
#define AC97_AD1986_LISEL1	0x0008	/* LINE_IN select bit 1 */
#define AC97_AD1986_LISEL_MASK	(AC97_AD1986_LISEL1 | AC97_AD1986_LISEL0)
#define AC97_AD1986_LISEL_LI	0x0000  /* LINE_IN pins as LINE_IN source */
#define AC97_AD1986_LISEL_SURR	0x0004  /* SURROUND pins as LINE_IN source */
#define AC97_AD1986_LISEL_MIC	0x0008  /* MIC_1/2 pins as LINE_IN source */
#define AC97_AD1986_SRU		0x0010	/* sample rate unlock */
#define AC97_AD1986_SOSEL	0x0020	/* SURROUND_OUT amplifiers input sel */
#define AC97_AD1986_2MIC	0x0040	/* 2-channel mic select */
#define AC97_AD1986_SPRD	0x0080	/* SPREAD enable */
#define AC97_AD1986_DMIX0	0x0100	/* downmix mode: */
					/*  0 = 6-to-4, 1 = 6-to-2 downmix */
#define AC97_AD1986_DMIX1	0x0200	/* downmix mode: 1 = enabled */
#define AC97_AD1986_CLDIS	0x0800	/* center/lfe disable */
#define AC97_AD1986_SODIS	0x1000	/* SURROUND_OUT disable */
#define AC97_AD1986_MSPLT	0x2000	/* mute split (read only 1) */
#define AC97_AD1986_AC97NC	0x4000	/* AC97 no compatible mode (r/o 1) */
#define AC97_AD1986_DACZ	0x8000	/* DAC zero-fill mode */

/* MISC 2 bits (AD1986 register 0x70) */
#define AC97_AD_MISC2		0x70	/* Misc Control Bits 2 (AD1986) */

#define AC97_AD1986_CVREF0	0x0004	/* C/LFE VREF_OUT 2.25V */
#define AC97_AD1986_CVREF1	0x0008	/* C/LFE VREF_OUT 0V */
#define AC97_AD1986_CVREF2	0x0010	/* C/LFE VREF_OUT 3.7V */
#define AC97_AD1986_CVREF_MASK \
	(AC97_AD1986_CVREF2 | AC97_AD1986_CVREF1 | AC97_AD1986_CVREF0)
#define AC97_AD1986_JSMAP	0x0020	/* Jack Sense Mapping 1 = alternate */
#define AC97_AD1986_MMDIS	0x0080	/* Mono Mute Disable */
#define AC97_AD1986_MVREF0	0x0400	/* MIC VREF_OUT 2.25V */
#define AC97_AD1986_MVREF1	0x0800	/* MIC VREF_OUT 0V */
#define AC97_AD1986_MVREF2	0x1000	/* MIC VREF_OUT 3.7V */
#define AC97_AD1986_MVREF_MASK \
	(AC97_AD1986_MVREF2 | AC97_AD1986_MVREF1 | AC97_AD1986_MVREF0)

/* MISC 3 bits (AD1986 register 0x7a) */
#define AC97_AD_MISC3		0x7a	/* Misc Control Bits 3 (AD1986) */

#define AC97_AD1986_MMIX	0x0004	/* Mic Mix, left/right */
#define AC97_AD1986_GPO		0x0008	/* General Purpose Out */
#define AC97_AD1986_LOHPEN	0x0010	/* LINE_OUT headphone drive */
#define AC97_AD1986_LVREF0	0x0100	/* LINE_OUT VREF_OUT 2.25V */
#define AC97_AD1986_LVREF1	0x0200	/* LINE_OUT VREF_OUT 0V */
#define AC97_AD1986_LVREF2	0x0400	/* LINE_OUT VREF_OUT 3.7V */
#define AC97_AD1986_LVREF_MASK \
	(AC97_AD1986_LVREF2 | AC97_AD1986_LVREF1 | AC97_AD1986_LVREF0)
#define AC97_AD1986_JSINVA	0x0800	/* Jack Sense Invert SENSE_A */
#define AC97_AD1986_LOSEL	0x1000	/* LINE_OUT amplifiers input select */
#define AC97_AD1986_HPSEL0	0x2000	/* Headphone amplifiers */
					/*   input select Surround DACs */
#define AC97_AD1986_HPSEL1	0x4000	/* Headphone amplifiers input */
					/*   select C/LFE DACs */
#define AC97_AD1986_JSINVB	0x8000	/* Jack Sense Invert SENSE_B */

/* Serial Config bits (AD1986 register 0x74) (incomplete) */
#define AC97_AD1986_OMS0	0x0100	/* Optional Mic Selector bit 0 */
#define AC97_AD1986_OMS1	0x0200	/* Optional Mic Selector bit 1 */
#define AC97_AD1986_OMS2	0x0400	/* Optional Mic Selector bit 2 */
#define AC97_AD1986_OMS_MASK \
	(AC97_AD1986_OMS2 | AC97_AD1986_OMS1 | AC97_AD1986_OMS0)
#define AC97_AD1986_OMS_M	0x0000  /* MIC_1/2 pins are MIC sources */
#define AC97_AD1986_OMS_L	0x0100  /* LINE_IN pins are MIC sources */
#define AC97_AD1986_OMS_C	0x0200  /* Center/LFE pins are MCI sources */
#define AC97_AD1986_OMS_MC	0x0400  /* Mix of MIC and C/LFE pins */
					/*   are MIC sources */
#define AC97_AD1986_OMS_ML	0x0500  /* MIX of MIC and LINE_IN pins */
					/*   are MIC sources */
#define AC97_AD1986_OMS_LC	0x0600  /* MIX of LINE_IN and C/LFE pins */
					/*   are MIC sources */
#define AC97_AD1986_OMS_MLC	0x0700  /* MIX of MIC, LINE_IN, C/LFE pins */
					/*   are MIC sources */


static int snd_ac97_ad198x_spdif_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = { "AC-Link", "A/D Converter" };

	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_ad198x_spdif_source_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	val = ac97->regs[AC97_AD_SERIAL_CFG];
	ucontrol->value.enumerated.item[0] = (val >> 2) & 1;
	return 0;
}

static int snd_ac97_ad198x_spdif_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	if (ucontrol->value.enumerated.item[0] > 1)
		return -EINVAL;
	val = ucontrol->value.enumerated.item[0] << 2;
	return snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x0004, val);
}

static const struct snd_kcontrol_new snd_ac97_ad198x_spdif_source = {
	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
	.name	= SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "Source",
	.info	= snd_ac97_ad198x_spdif_source_info,
	.get	= snd_ac97_ad198x_spdif_source_get,
	.put	= snd_ac97_ad198x_spdif_source_put,
};

static int patch_ad198x_post_spdif(struct snd_ac97 * ac97)
{
 	return patch_build_controls(ac97, &snd_ac97_ad198x_spdif_source, 1);
}

static const struct snd_kcontrol_new snd_ac97_ad1981x_jack_sense[] = {
	AC97_SINGLE("Headphone Jack Sense", AC97_AD_JACK_SPDIF, 11, 1, 0),
	AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 12, 1, 0),
};

/* black list to avoid HP/Line jack-sense controls
 * (SS vendor << 16 | device)
 */
static unsigned int ad1981_jacks_blacklist[] = {
	0x10140523, /* Thinkpad R40 */
	0x10140534, /* Thinkpad X31 */
	0x10140537, /* Thinkpad T41p */
	0x10140554, /* Thinkpad T42p/R50p */
	0x10140567, /* Thinkpad T43p 2668-G7U */
	0x10140581, /* Thinkpad X41-2527 */
	0x104380b0, /* Asus A7V8X-MX */
	0x11790241, /* Toshiba Satellite A-15 S127 */
	0x144dc01a, /* Samsung NP-X20C004/SEG */
	0 /* end */
};

static int c