patch_sigmatel.c

linux 内核源代码

	[STAC_INTEL_MAC_V4] = "intel-mac-v4",
	[STAC_INTEL_MAC_V5] = "intel-mac-v5",
	/* for backward compatibility */
	[STAC_MACMINI]	= "macmini",
	[STAC_MACBOOK]	= "macbook",
	[STAC_MACBOOK_PRO_V1]	= "macbook-pro-v1",
	[STAC_MACBOOK_PRO_V2]	= "macbook-pro",
	[STAC_IMAC_INTEL] = "imac-intel",
	[STAC_IMAC_INTEL_20] = "imac-intel-20",
	[STAC_922X_DELL_D81] = "dell-d81",
	[STAC_922X_DELL_D82] = "dell-d82",
	[STAC_922X_DELL_M81] = "dell-m81",
	[STAC_922X_DELL_M82] = "dell-m82",
};

static struct snd_pci_quirk stac922x_cfg_tbl[] = {
	/* SigmaTel reference board */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2668,
		      "DFI LanParty", STAC_D945_REF),
	/* Intel 945G based systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0101,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0202,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0606,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0601,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0111,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x1115,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x1116,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x1117,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x1118,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x1119,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x8826,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x5049,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x5055,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x5048,
		      "Intel D945G", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0110,
		      "Intel D945G", STAC_D945GTP3),
	/* Intel D945G 5-stack systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0404,
		      "Intel D945G", STAC_D945GTP5),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0303,
		      "Intel D945G", STAC_D945GTP5),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0013,
		      "Intel D945G", STAC_D945GTP5),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0417,
		      "Intel D945G", STAC_D945GTP5),
	/* Intel 945P based systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0b0b,
		      "Intel D945P", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0112,
		      "Intel D945P", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0d0d,
		      "Intel D945P", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0909,
		      "Intel D945P", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0505,
		      "Intel D945P", STAC_D945GTP3),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x0707,
		      "Intel D945P", STAC_D945GTP5),
	/* other systems  */
	/* Apple Mac Mini (early 2006) */
	SND_PCI_QUIRK(0x8384, 0x7680,
		      "Mac Mini", STAC_INTEL_MAC_V3),
	/* Dell systems  */
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01a7,
		      "unknown Dell", STAC_922X_DELL_D81),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01a9,
		      "unknown Dell", STAC_922X_DELL_D81),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01ab,
		      "unknown Dell", STAC_922X_DELL_D81),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01ac,
		      "unknown Dell", STAC_922X_DELL_D82),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01bf,
		      "unknown Dell", STAC_922X_DELL_M81),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01d0,
		      "unknown Dell", STAC_922X_DELL_D82),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01d1,
		      "unknown Dell", STAC_922X_DELL_D81),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01d2,
		      "unknown Dell", STAC_922X_DELL_D81),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01d7,
		      "Dell XPS M1210", STAC_922X_DELL_M82),
	{} /* terminator */
};

static unsigned int ref927x_pin_configs[14] = {
	0x02214020, 0x02a19080, 0x0181304e, 0x01014010,
	0x01a19040, 0x01011012, 0x01016011, 0x0101201f, 
	0x183301f0, 0x18a001f0, 0x18a001f0, 0x01442070,
	0x01c42190, 0x40000100,
};

static unsigned int d965_3st_pin_configs[14] = {
	0x0221401f, 0x02a19120, 0x40000100, 0x01014011,
	0x01a19021, 0x01813024, 0x40000100, 0x40000100,
	0x40000100, 0x40000100, 0x40000100, 0x40000100,
	0x40000100, 0x40000100
};

static unsigned int d965_5st_pin_configs[14] = {
	0x02214020, 0x02a19080, 0x0181304e, 0x01014010,
	0x01a19040, 0x01011012, 0x01016011, 0x40000100,
	0x40000100, 0x40000100, 0x40000100, 0x01442070,
	0x40000100, 0x40000100
};

static unsigned int dell_3st_pin_configs[14] = {
	0x02211230, 0x02a11220, 0x01a19040, 0x01114210,
	0x01111212, 0x01116211, 0x01813050, 0x01112214,
	0x403003fa, 0x40000100, 0x40000100, 0x404003fb,
	0x40c003fc, 0x40000100
};

static unsigned int *stac927x_brd_tbl[STAC_927X_MODELS] = {
	[STAC_D965_REF] = ref927x_pin_configs,
	[STAC_D965_3ST] = d965_3st_pin_configs,
	[STAC_D965_5ST] = d965_5st_pin_configs,
	[STAC_DELL_3ST] = dell_3st_pin_configs,
};

static const char *stac927x_models[STAC_927X_MODELS] = {
	[STAC_D965_REF]	= "ref",
	[STAC_D965_3ST]	= "3stack",
	[STAC_D965_5ST] = "5stack",
	[STAC_DELL_3ST]	= "dell-3stack",
};

static struct snd_pci_quirk stac927x_cfg_tbl[] = {
	/* SigmaTel reference board */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2668,
		      "DFI LanParty", STAC_D965_REF),
	 /* Intel 946 based systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x3d01, "Intel D946", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0xa301, "Intel D946", STAC_D965_3ST),
	/* 965 based 3 stack systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2116, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2115, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2114, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2113, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2112, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2111, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2110, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2009, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2008, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2007, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2006, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2005, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2004, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2003, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2002, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2001, "Intel D965", STAC_D965_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01f3, "Dell Inspiron 1420", STAC_D965_3ST),
	/* Dell 3 stack systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01dd, "Dell Dimension E520", STAC_DELL_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01ed, "Dell     ", STAC_DELL_3ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x01f4, "Dell     ", STAC_DELL_3ST),
	/* 965 based 5 stack systems */
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL,  0x0209, "Dell XPS 1330", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2301, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2302, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2303, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2304, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2305, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2501, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2502, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2503, "Intel D965", STAC_D965_5ST),
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2504, "Intel D965", STAC_D965_5ST),
	{} /* terminator */
};

static unsigned int ref9205_pin_configs[12] = {
	0x40000100, 0x40000100, 0x01016011, 0x01014010,
	0x01813122, 0x01a19021, 0x40000100, 0x40000100,
	0x90a000f0, 0x90a000f0, 0x01441030, 0x01c41030
};

/*
    STAC 9205 pin configs for
    102801F1
    102801F2
    102801FC
    102801FD
    10280204
    1028021F
*/
static unsigned int dell_9205_m42_pin_configs[12] = {
	0x0321101F, 0x03A11020, 0x400003FA, 0x90170310,
	0x400003FB, 0x400003FC, 0x400003FD, 0x40F000F9,
	0x90A60330, 0x400003FF, 0x0144131F, 0x40C003FE,
};

/*
    STAC 9205 pin configs for
    102801F9
    102801FA
    102801FE
    102801FF (Dell Precision M4300)
    10280206
    10280200
    10280201
*/
static unsigned int dell_9205_m43_pin_configs[12] = {
	0x0321101f, 0x03a11020, 0x90a70330, 0x90170310,
	0x400000fe, 0x400000ff, 0x400000fd, 0x40f000f9,
	0x400000fa, 0x400000fc, 0x0144131f, 0x40c003f8,
};

static unsigned int dell_9205_m44_pin_configs[12] = {
	0x0421101f, 0x04a11020, 0x400003fa, 0x90170310,
	0x400003fb, 0x400003fc, 0x400003fd, 0x400003f9,
	0x90a60330, 0x400003ff, 0x01441340, 0x40c003fe,
};

static unsigned int *stac9205_brd_tbl[STAC_9205_MODELS] = {
	[STAC_9205_REF] = ref9205_pin_configs,
	[STAC_9205_DELL_M42] = dell_9205_m42_pin_configs,
	[STAC_9205_DELL_M43] = dell_9205_m43_pin_configs,
	[STAC_9205_DELL_M44] = dell_9205_m44_pin_configs,
};

static const char *stac9205_models[STAC_9205_MODELS] = {
	[STAC_9205_REF] = "ref",
	[STAC_9205_DELL_M42] = "dell-m42",
	[STAC_9205_DELL_M43] = "dell-m43",
	[STAC_9205_DELL_M44] = "dell-m44",
};

static struct snd_pci_quirk stac9205_cfg_tbl[] = {
	/* SigmaTel reference board */
	SND_PCI_QUIRK(PCI_VENDOR_ID_INTEL, 0x2668,
		      "DFI LanParty", STAC_9205_REF),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f1,
		      "unknown Dell", STAC_9205_DELL_M42),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f2,
		      "unknown Dell", STAC_9205_DELL_M42),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f8,
		      "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x021c,
			  "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f9,
		      "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x021b,
		      "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01fa,
		      "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01fc,
		      "unknown Dell", STAC_9205_DELL_M42),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01fd,
		      "unknown Dell", STAC_9205_DELL_M42),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01fe,
		      "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01ff,
		      "Dell Precision M4300", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0206,
		      "Dell Precision", STAC_9205_DELL_M43),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f1,
		      "Dell Inspiron", STAC_9205_DELL_M44),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f2,
		      "Dell Inspiron", STAC_9205_DELL_M44),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01fc,
		      "Dell Inspiron", STAC_9205_DELL_M44),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01fd,
		      "Dell Inspiron", STAC_9205_DELL_M44),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0204,
		      "unknown Dell", STAC_9205_DELL_M42),
	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x021f,
		      "Dell Inspiron", STAC_9205_DELL_M44),
	{} /* terminator */
};

static int stac92xx_save_bios_config_regs(struct hda_codec *codec)
{
	int i;
	struct sigmatel_spec *spec = codec->spec;
	
	if (! spec->bios_pin_configs) {
		spec->bios_pin_configs = kcalloc(spec->num_pins,
		                                 sizeof(*spec->bios_pin_configs), GFP_KERNEL);
		if (! spec->bios_pin_configs)
			return -ENOMEM;
	}
	
	for (i = 0; i < spec->num_pins; i++) {
		hda_nid_t nid = spec->pin_nids[i];
		unsigned int pin_cfg;
		
		pin_cfg = snd_hda_codec_read(codec, nid, 0, 
			AC_VERB_GET_CONFIG_DEFAULT, 0x00);	
		snd_printdd(KERN_INFO "hda_codec: pin nid %2.2x bios pin config %8.8x\n",
					nid, pin_cfg);
		spec->bios_pin_configs[i] = pin_cfg;
	}
	
	return 0;
}

static void stac92xx_set_config_reg(struct hda_codec *codec,
				    hda_nid_t pin_nid, unsigned int pin_config)
{
	int i;
	snd_hda_codec_write(codec, pin_nid, 0,
			    AC_VERB_SET_CONFIG_DEFAULT_BYTES_0,
			    pin_config & 0x000000ff);
	snd_hda_codec_write(codec, pin_nid, 0,
			    AC_VERB_SET_CONFIG_DEFAULT_BYTES_1,
			    (pin_config & 0x0000ff00) >> 8);
	snd_hda_codec_write(codec, pin_nid, 0,
			    AC_VERB_SET_CONFIG_DEFAULT_BYTES_2,
			    (pin_config & 0x00ff0000) >> 16);
	snd_hda_codec_write(codec, pin_nid, 0,
			    AC_VERB_SET_CONFIG_DEFAULT_BYTES_3,
			    pin_config >> 24);
	i = snd_hda_codec_read(codec, pin_nid, 0,
			       AC_VERB_GET_CONFIG_DEFAULT,
			       0x00);	
	snd_printdd(KERN_INFO "hda_codec: pin nid %2.2x pin config %8.8x\n",
		    pin_nid, i);
}

static void stac92xx_set_config_regs(struct hda_codec *codec)
{
	int i;
	struct sigmatel_spec *spec = codec->spec;

 	if (!spec->pin_configs)
 		return;

	for (i = 0; i < spec->num_pins; i++)
		stac92xx_set_config_reg(codec, spec->pin_nids[i],
					spec->pin_configs[i]);
}

static void stac92xx_enable_gpio_mask(struct hda_codec *codec)
{
	struct sigmatel_spec *spec = codec->spec;
	/* Configure GPIOx as output */
	snd_hda_codec_write_cache(codec, codec->afg, 0,
				  AC_VERB_SET_GPIO_DIRECTION, spec->gpio_mask);
	/* Configure GPIOx as CMOS */
	snd_hda_codec_write_cache(codec, codec->afg, 0, 0x7e7, 0x00000000);
	/* Assert GPIOx */
	snd_hda_codec_write_cache(codec, codec->afg, 0,
				  AC_VERB_SET_GPIO_DATA, spec->gpio_data);
	/* Enable GPIOx */
	snd_hda_codec_write_cache(codec, codec->afg, 0,
				  AC_VERB_SET_GPIO_MASK, spec->gpio_mask);
}

/*
 * Analog playback callbacks
 */
static int stac92xx_playback_pcm_open(struct hda_pcm_stream *hinfo,
				      struct hda_codec *codec,
				      struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_open(codec, &spec->multiout, substream);
}

static int stac92xx_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
					 struct hda_codec *codec,
					 unsigned int stream_tag,
					 unsigned int format,
					 struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_prepare(codec, &spec->multiout, stream_tag, format, substream);
}

static int stac92xx_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
					struct hda_codec *codec,
					struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);
}

/*
 * Digital playback callbacks
 */
static int stac92xx_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
					  struct hda_codec *codec,
					  struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_open(codec, &spec->multiout);
}

static int stac92xx_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
					   struct hda_codec *codec,
					   struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}

static int stac92xx_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
					 struct hda_codec *codec,
					 unsigned int stream_tag,
					 unsigned int format,
					 struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_prepare(codec, &spec->multiout,
					     stream_tag, format, substream);
}


/*
 * Analog capture callbacks
 */
static int stac92xx_capture_pcm_prepare(struct hda_pcm_stream *hinfo,
					struct hda_codec *codec,
					unsigned int stream_tag,
					unsigned int format,
					struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;

	snd_hda_codec_setup_stream(codec, spec->adc_nids[substream->number],
                                   stream_tag, 0, format);
	return 0;
}

static int stac92xx_capture_pcm_cleanup(struct hda_pcm_stream *hinfo,
					struct hda_codec *codec,
					struct snd_pcm_substream *substream)
{
	struct sigmatel_spec *spec = codec->spec;

	snd_hda_codec_setup_stream(codec, spec->adc_nids[substream->number], 0, 0, 0);
	return 0;
}

static struct hda_pcm_stream stac92xx_pcm_digital_playback = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 2,