sound/pci/hda/patch_si3054.c - kernel/mindspeed - Git at Google

 /*
  * Universal Interface for Intel High Definition Audio Codec
  *
  * HD audio interface patch for Silicon Labs 3054/5 modem codec
  *
  * Copyright (c) 2005 Sasha Khapyorsky <sashak@alsa-project.org>
  *                    Takashi Iwai <tiwai@suse.de>
  *
  *
  *  This driver is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This driver is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */

 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <sound/core.h>
 #include "hda_codec.h"
 #include "hda_local.h"

 /* si3054 verbs */
 #define SI3054_VERB_READ_NODE  0x900
 #define SI3054_VERB_WRITE_NODE 0x100

 /* si3054 nodes (registers) */
 #define SI3054_EXTENDED_MID    2
 #define SI3054_LINE_RATE       3
 #define SI3054_LINE_LEVEL      4
 #define SI3054_GPIO_CFG        5
 #define SI3054_GPIO_POLARITY   6
 #define SI3054_GPIO_STICKY     7
 #define SI3054_GPIO_WAKEUP     8
 #define SI3054_GPIO_STATUS     9
 #define SI3054_GPIO_CONTROL   10
 #define SI3054_MISC_AFE       11
 #define SI3054_CHIPID         12
 #define SI3054_LINE_CFG1      13
 #define SI3054_LINE_STATUS    14
 #define SI3054_DC_TERMINATION 15
 #define SI3054_LINE_CONFIG    16
 #define SI3054_CALLPROG_ATT   17
 #define SI3054_SQ_CONTROL     18
 #define SI3054_MISC_CONTROL   19
 #define SI3054_RING_CTRL1     20
 #define SI3054_RING_CTRL2     21

 /* extended MID */
 #define SI3054_MEI_READY 0xf

 /* line level */
 #define SI3054_ATAG_MASK 0x00f0
 #define SI3054_DTAG_MASK 0xf000

 /* GPIO bits */
 #define SI3054_GPIO_OH    0x0001
 #define SI3054_GPIO_CID   0x0002

 /* chipid and revisions */
 #define SI3054_CHIPID_CODEC_REV_MASK 0x000f
 #define SI3054_CHIPID_DAA_REV_MASK   0x00f0
 #define SI3054_CHIPID_INTERNATIONAL  0x0100
 #define SI3054_CHIPID_DAA_ID         0x0f00
 #define SI3054_CHIPID_CODEC_ID      (1<<12)

 /* si3054 codec registers (nodes) access macros */
 #define GET_REG(codec,reg) (snd_hda_codec_read(codec,reg,0,SI3054_VERB_READ_NODE,0))
 #define SET_REG(codec,reg,val) (snd_hda_codec_write(codec,reg,0,SI3054_VERB_WRITE_NODE,val))
 #define SET_REG_CACHE(codec,reg,val) \
 	snd_hda_codec_write_cache(codec,reg,0,SI3054_VERB_WRITE_NODE,val)


 struct si3054_spec {
 	unsigned international;
 	struct hda_pcm pcm;
 };


 /*
  * Modem mixer
  */

 #define PRIVATE_VALUE(reg,mask) ((reg<<16)|(mask&0xffff))
 #define PRIVATE_REG(val) ((val>>16)&0xffff)
 #define PRIVATE_MASK(val) (val&0xffff)

 #define si3054_switch_info	snd_ctl_boolean_mono_info

 static int si3054_switch_get(struct snd_kcontrol *kcontrol,
 		               struct snd_ctl_elem_value *uvalue)
 {
 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 	u16 reg  = PRIVATE_REG(kcontrol->private_value);
 	u16 mask = PRIVATE_MASK(kcontrol->private_value);
 	uvalue->value.integer.value[0] = (GET_REG(codec, reg)) & mask ? 1 : 0 ;
 	return 0;
 }

 static int si3054_switch_put(struct snd_kcontrol *kcontrol,
 		               struct snd_ctl_elem_value *uvalue)
 {
 	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
 	u16 reg  = PRIVATE_REG(kcontrol->private_value);
 	u16 mask = PRIVATE_MASK(kcontrol->private_value);
 	if (uvalue->value.integer.value[0])
 		SET_REG_CACHE(codec, reg, (GET_REG(codec, reg)) | mask);
 	else
 		SET_REG_CACHE(codec, reg, (GET_REG(codec, reg)) & ~mask);
 	return 0;
 }

 #define SI3054_KCONTROL(kname,reg,mask) { \
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
 	.name = kname, \
 	.subdevice = HDA_SUBDEV_NID_FLAG | reg, \
 	.info = si3054_switch_info, \
 	.get  = si3054_switch_get, \
 	.put  = si3054_switch_put, \
 	.private_value = PRIVATE_VALUE(reg,mask), \
 }


 static const struct snd_kcontrol_new si3054_modem_mixer[] = {
 	SI3054_KCONTROL("Off-hook Switch", SI3054_GPIO_CONTROL, SI3054_GPIO_OH),
 	SI3054_KCONTROL("Caller ID Switch", SI3054_GPIO_CONTROL, SI3054_GPIO_CID),
 	{}
 };

 static int si3054_build_controls(struct hda_codec *codec)
 {
 	return snd_hda_add_new_ctls(codec, si3054_modem_mixer);
 }


 /*
  * PCM callbacks
  */

 static int si3054_pcm_prepare(struct hda_pcm_stream *hinfo,
 			      struct hda_codec *codec,
 			      unsigned int stream_tag,
 			      unsigned int format,
 			      struct snd_pcm_substream *substream)
 {
 	u16 val;

 	SET_REG(codec, SI3054_LINE_RATE, substream->runtime->rate);
 	val = GET_REG(codec, SI3054_LINE_LEVEL);
 	val &= 0xff << (8 * (substream->stream != SNDRV_PCM_STREAM_PLAYBACK));
 	val |= ((stream_tag & 0xf) << 4) << (8 * (substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
 	SET_REG(codec, SI3054_LINE_LEVEL, val);

 	snd_hda_codec_setup_stream(codec, hinfo->nid,
 				   stream_tag, 0, format);
 	return 0;
 }

 static int si3054_pcm_open(struct hda_pcm_stream *hinfo,
 			   struct hda_codec *codec,
 			    struct snd_pcm_substream *substream)
 {
 	static unsigned int rates[] = { 8000, 9600, 16000 };
 	static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 		.count = ARRAY_SIZE(rates),
 		.list = rates,
 		.mask = 0,
 	};
 	substream->runtime->hw.period_bytes_min = 80;
 	return snd_pcm_hw_constraint_list(substream->runtime, 0,
 			SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 }


 static const struct hda_pcm_stream si3054_pcm = {
 	.substreams = 1,
 	.channels_min = 1,
 	.channels_max = 1,
 	.nid = 0x1,
 	.rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_KNOT,
 	.formats = SNDRV_PCM_FMTBIT_S16_LE,
 	.maxbps = 16,
 	.ops = {
 		.open = si3054_pcm_open,
 		.prepare = si3054_pcm_prepare,
 	},
 };


 static int si3054_build_pcms(struct hda_codec *codec)
 {
 	struct si3054_spec *spec = codec->spec;
 	struct hda_pcm *info = &spec->pcm;
 	codec->num_pcms = 1;
 	codec->pcm_info = info;
 	info->name = "Si3054 Modem";
 	info->stream[SNDRV_PCM_STREAM_PLAYBACK] = si3054_pcm;
 	info->stream[SNDRV_PCM_STREAM_CAPTURE]  = si3054_pcm;
 	info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = codec->mfg;
 	info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = codec->mfg;
 	info->pcm_type = HDA_PCM_TYPE_MODEM;
 	return 0;
 }


 /*
  * Init part
  */

 static int si3054_init(struct hda_codec *codec)
 {
 	struct si3054_spec *spec = codec->spec;
 	unsigned wait_count;
 	u16 val;

 	snd_hda_codec_write(codec, AC_NODE_ROOT, 0, AC_VERB_SET_CODEC_RESET, 0);
 	snd_hda_codec_write(codec, codec->mfg, 0, AC_VERB_SET_STREAM_FORMAT, 0);
 	SET_REG(codec, SI3054_LINE_RATE, 9600);
 	SET_REG(codec, SI3054_LINE_LEVEL, SI3054_DTAG_MASK|SI3054_ATAG_MASK);
 	SET_REG(codec, SI3054_EXTENDED_MID, 0);

 	wait_count = 10;
 	do {
 		msleep(2);
 		val = GET_REG(codec, SI3054_EXTENDED_MID);
 	} while ((val & SI3054_MEI_READY) != SI3054_MEI_READY && wait_count--);

 	if((val&SI3054_MEI_READY) != SI3054_MEI_READY) {
 		snd_printk(KERN_ERR "si3054: cannot initialize. EXT MID = %04x\n", val);
 		/* let's pray that this is no fatal error */
 		/* return -EACCES; */
 	}

 	SET_REG(codec, SI3054_GPIO_POLARITY, 0xffff);
 	SET_REG(codec, SI3054_GPIO_CFG, 0x0);
 	SET_REG(codec, SI3054_MISC_AFE, 0);
 	SET_REG(codec, SI3054_LINE_CFG1,0x200);

 	if((GET_REG(codec,SI3054_LINE_STATUS) & (1<<6)) == 0) {
 		snd_printd("Link Frame Detect(FDT) is not ready (line status: %04x)\n",
 				GET_REG(codec,SI3054_LINE_STATUS));
 	}

 	spec->international = GET_REG(codec, SI3054_CHIPID) & SI3054_CHIPID_INTERNATIONAL;

 	return 0;
 }

 static void si3054_free(struct hda_codec *codec)
 {
 	kfree(codec->spec);
 }


 /*
  */

 static const struct hda_codec_ops si3054_patch_ops = {
 	.build_controls = si3054_build_controls,
 	.build_pcms = si3054_build_pcms,
 	.init = si3054_init,
 	.free = si3054_free,
 };

 static int patch_si3054(struct hda_codec *codec)
 {
 	struct si3054_spec *spec = kzalloc(sizeof(*spec), GFP_KERNEL);
 	if (spec == NULL)
 		return -ENOMEM;
 	codec->spec = spec;
 	codec->patch_ops = si3054_patch_ops;
 	return 0;
 }

 /*
  * patch entries
  */
 static const struct hda_codec_preset snd_hda_preset_si3054[] = {
  	{ .id = 0x163c3055, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x163c3155, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x11c13026, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x11c13055, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x11c13155, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x10573055, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x10573057, .name = "Si3054", .patch = patch_si3054 },
  	{ .id = 0x10573155, .name = "Si3054", .patch = patch_si3054 },
 	/* VIA HDA on Clevo m540 */
 	{ .id = 0x11063288, .name = "Si3054", .patch = patch_si3054 },
 	/* Asus A8J Modem (SM56) */
 	{ .id = 0x15433155, .name = "Si3054", .patch = patch_si3054 },
 	/* LG LW20 modem */
 	{ .id = 0x18540018, .name = "Si3054", .patch = patch_si3054 },
 	{}
 };

 MODULE_ALIAS("snd-hda-codec-id:163c3055");
 MODULE_ALIAS("snd-hda-codec-id:163c3155");
 MODULE_ALIAS("snd-hda-codec-id:11c13026");
 MODULE_ALIAS("snd-hda-codec-id:11c13055");
 MODULE_ALIAS("snd-hda-codec-id:11c13155");
 MODULE_ALIAS("snd-hda-codec-id:10573055");
 MODULE_ALIAS("snd-hda-codec-id:10573057");
 MODULE_ALIAS("snd-hda-codec-id:10573155");
 MODULE_ALIAS("snd-hda-codec-id:11063288");
 MODULE_ALIAS("snd-hda-codec-id:15433155");
 MODULE_ALIAS("snd-hda-codec-id:18540018");

 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Si3054 HD-audio modem codec");

 static struct hda_codec_preset_list si3054_list = {
 	.preset = snd_hda_preset_si3054,
 	.owner = THIS_MODULE,
 };

 static int __init patch_si3054_init(void)
 {
 	return snd_hda_add_codec_preset(&si3054_list);
 }

 static void __exit patch_si3054_exit(void)
 {
 	snd_hda_delete_codec_preset(&si3054_list);
 }

 module_init(patch_si3054_init)
 module_exit(patch_si3054_exit)
	/*
	* Universal Interface for Intel High Definition Audio Codec
	*
	* HD audio interface patch for Silicon Labs 3054/5 modem codec
	*
	* Copyright (c) 2005 Sasha Khapyorsky <sashak@alsa-project.org>
	* Takashi Iwai <tiwai@suse.de>
	*
	*
	* This driver is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This driver is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include <linux/init.h>
	#include <linux/delay.h>
	#include <linux/slab.h>
	#include <linux/module.h>
	#include <sound/core.h>
	#include "hda_codec.h"
	#include "hda_local.h"

	/* si3054 verbs */
	#define SI3054_VERB_READ_NODE 0x900
	#define SI3054_VERB_WRITE_NODE 0x100

	/* si3054 nodes (registers) */
	#define SI3054_EXTENDED_MID 2
	#define SI3054_LINE_RATE 3
	#define SI3054_LINE_LEVEL 4
	#define SI3054_GPIO_CFG 5
	#define SI3054_GPIO_POLARITY 6
	#define SI3054_GPIO_STICKY 7
	#define SI3054_GPIO_WAKEUP 8
	#define SI3054_GPIO_STATUS 9
	#define SI3054_GPIO_CONTROL 10
	#define SI3054_MISC_AFE 11
	#define SI3054_CHIPID 12
	#define SI3054_LINE_CFG1 13
	#define SI3054_LINE_STATUS 14
	#define SI3054_DC_TERMINATION 15
	#define SI3054_LINE_CONFIG 16
	#define SI3054_CALLPROG_ATT 17
	#define SI3054_SQ_CONTROL 18
	#define SI3054_MISC_CONTROL 19
	#define SI3054_RING_CTRL1 20
	#define SI3054_RING_CTRL2 21

	/* extended MID */
	#define SI3054_MEI_READY 0xf

	/* line level */
	#define SI3054_ATAG_MASK 0x00f0
	#define SI3054_DTAG_MASK 0xf000

	/* GPIO bits */
	#define SI3054_GPIO_OH 0x0001
	#define SI3054_GPIO_CID 0x0002

	/* chipid and revisions */
	#define SI3054_CHIPID_CODEC_REV_MASK 0x000f
	#define SI3054_CHIPID_DAA_REV_MASK 0x00f0
	#define SI3054_CHIPID_INTERNATIONAL 0x0100
	#define SI3054_CHIPID_DAA_ID 0x0f00
	#define SI3054_CHIPID_CODEC_ID (1<<12)

	/* si3054 codec registers (nodes) access macros */
	#define GET_REG(codec,reg) (snd_hda_codec_read(codec,reg,0,SI3054_VERB_READ_NODE,0))
	#define SET_REG(codec,reg,val) (snd_hda_codec_write(codec,reg,0,SI3054_VERB_WRITE_NODE,val))
	#define SET_REG_CACHE(codec,reg,val) \
	snd_hda_codec_write_cache(codec,reg,0,SI3054_VERB_WRITE_NODE,val)


	struct si3054_spec {
	unsigned international;
	struct hda_pcm pcm;
	};


	/*
	* Modem mixer
	*/

	#define PRIVATE_VALUE(reg,mask) ((reg<<16)\|(mask&0xffff))
	#define PRIVATE_REG(val) ((val>>16)&0xffff)
	#define PRIVATE_MASK(val) (val&0xffff)

	#define si3054_switch_info snd_ctl_boolean_mono_info

	static int si3054_switch_get(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *uvalue)
	{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	u16 reg = PRIVATE_REG(kcontrol->private_value);
	u16 mask = PRIVATE_MASK(kcontrol->private_value);
	uvalue->value.integer.value[0] = (GET_REG(codec, reg)) & mask ? 1 : 0 ;
	return 0;
	}

	static int si3054_switch_put(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *uvalue)
	{
	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
	u16 reg = PRIVATE_REG(kcontrol->private_value);
	u16 mask = PRIVATE_MASK(kcontrol->private_value);
	if (uvalue->value.integer.value[0])
	SET_REG_CACHE(codec, reg, (GET_REG(codec, reg)) \| mask);
	else
	SET_REG_CACHE(codec, reg, (GET_REG(codec, reg)) & ~mask);
	return 0;
	}

	#define SI3054_KCONTROL(kname,reg,mask) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
	.name = kname, \
	.subdevice = HDA_SUBDEV_NID_FLAG \| reg, \
	.info = si3054_switch_info, \
	.get = si3054_switch_get, \
	.put = si3054_switch_put, \
	.private_value = PRIVATE_VALUE(reg,mask), \
	}


	static const struct snd_kcontrol_new si3054_modem_mixer[] = {
	SI3054_KCONTROL("Off-hook Switch", SI3054_GPIO_CONTROL, SI3054_GPIO_OH),
	SI3054_KCONTROL("Caller ID Switch", SI3054_GPIO_CONTROL, SI3054_GPIO_CID),
	{}
	};

	static int si3054_build_controls(struct hda_codec *codec)
	{
	return snd_hda_add_new_ctls(codec, si3054_modem_mixer);
	}


	/*
	* PCM callbacks
	*/

	static int si3054_pcm_prepare(struct hda_pcm_stream *hinfo,
	struct hda_codec *codec,
	unsigned int stream_tag,
	unsigned int format,
	struct snd_pcm_substream *substream)
	{
	u16 val;

	SET_REG(codec, SI3054_LINE_RATE, substream->runtime->rate);
	val = GET_REG(codec, SI3054_LINE_LEVEL);
	val &= 0xff << (8 * (substream->stream != SNDRV_PCM_STREAM_PLAYBACK));
	val \|= ((stream_tag & 0xf) << 4) << (8 * (substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
	SET_REG(codec, SI3054_LINE_LEVEL, val);

	snd_hda_codec_setup_stream(codec, hinfo->nid,
	stream_tag, 0, format);
	return 0;
	}

	static int si3054_pcm_open(struct hda_pcm_stream *hinfo,
	struct hda_codec *codec,
	struct snd_pcm_substream *substream)
	{
	static unsigned int rates[] = { 8000, 9600, 16000 };
	static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
	.count = ARRAY_SIZE(rates),
	.list = rates,
	.mask = 0,
	};
	substream->runtime->hw.period_bytes_min = 80;
	return snd_pcm_hw_constraint_list(substream->runtime, 0,
	SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
	}


	static const struct hda_pcm_stream si3054_pcm = {
	.substreams = 1,
	.channels_min = 1,
	.channels_max = 1,
	.nid = 0x1,
	.rates = SNDRV_PCM_RATE_8000\|SNDRV_PCM_RATE_16000\|SNDRV_PCM_RATE_KNOT,
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	.maxbps = 16,
	.ops = {
	.open = si3054_pcm_open,
	.prepare = si3054_pcm_prepare,
	},
	};


	static int si3054_build_pcms(struct hda_codec *codec)
	{
	struct si3054_spec *spec = codec->spec;
	struct hda_pcm *info = &spec->pcm;
	codec->num_pcms = 1;
	codec->pcm_info = info;
	info->name = "Si3054 Modem";
	info->stream[SNDRV_PCM_STREAM_PLAYBACK] = si3054_pcm;
	info->stream[SNDRV_PCM_STREAM_CAPTURE] = si3054_pcm;
	info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = codec->mfg;
	info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = codec->mfg;
	info->pcm_type = HDA_PCM_TYPE_MODEM;
	return 0;
	}


	/*
	* Init part
	*/

	static int si3054_init(struct hda_codec *codec)
	{
	struct si3054_spec *spec = codec->spec;
	unsigned wait_count;
	u16 val;

	snd_hda_codec_write(codec, AC_NODE_ROOT, 0, AC_VERB_SET_CODEC_RESET, 0);
	snd_hda_codec_write(codec, codec->mfg, 0, AC_VERB_SET_STREAM_FORMAT, 0);
	SET_REG(codec, SI3054_LINE_RATE, 9600);
	SET_REG(codec, SI3054_LINE_LEVEL, SI3054_DTAG_MASK\|SI3054_ATAG_MASK);
	SET_REG(codec, SI3054_EXTENDED_MID, 0);

	wait_count = 10;
	do {
	msleep(2);
	val = GET_REG(codec, SI3054_EXTENDED_MID);
	} while ((val & SI3054_MEI_READY) != SI3054_MEI_READY && wait_count--);

	if((val&SI3054_MEI_READY) != SI3054_MEI_READY) {
	snd_printk(KERN_ERR "si3054: cannot initialize. EXT MID = %04x\n", val);
	/* let's pray that this is no fatal error */
	/* return -EACCES; */
	}

	SET_REG(codec, SI3054_GPIO_POLARITY, 0xffff);
	SET_REG(codec, SI3054_GPIO_CFG, 0x0);
	SET_REG(codec, SI3054_MISC_AFE, 0);
	SET_REG(codec, SI3054_LINE_CFG1,0x200);

	if((GET_REG(codec,SI3054_LINE_STATUS) & (1<<6)) == 0) {
	snd_printd("Link Frame Detect(FDT) is not ready (line status: %04x)\n",
	GET_REG(codec,SI3054_LINE_STATUS));
	}

	spec->international = GET_REG(codec, SI3054_CHIPID) & SI3054_CHIPID_INTERNATIONAL;

	return 0;
	}

	static void si3054_free(struct hda_codec *codec)
	{
	kfree(codec->spec);
	}


	/*
	*/

	static const struct hda_codec_ops si3054_patch_ops = {
	.build_controls = si3054_build_controls,
	.build_pcms = si3054_build_pcms,
	.init = si3054_init,
	.free = si3054_free,
	};

	static int patch_si3054(struct hda_codec *codec)
	{
	struct si3054_spec spec = kzalloc(sizeof(spec), GFP_KERNEL);
	if (spec == NULL)
	return -ENOMEM;
	codec->spec = spec;
	codec->patch_ops = si3054_patch_ops;
	return 0;
	}

	/*
	* patch entries
	*/
	static const struct hda_codec_preset snd_hda_preset_si3054[] = {
	{ .id = 0x163c3055, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x163c3155, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x11c13026, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x11c13055, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x11c13155, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x10573055, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x10573057, .name = "Si3054", .patch = patch_si3054 },
	{ .id = 0x10573155, .name = "Si3054", .patch = patch_si3054 },
	/* VIA HDA on Clevo m540 */
	{ .id = 0x11063288, .name = "Si3054", .patch = patch_si3054 },
	/* Asus A8J Modem (SM56) */
	{ .id = 0x15433155, .name = "Si3054", .patch = patch_si3054 },
	/* LG LW20 modem */
	{ .id = 0x18540018, .name = "Si3054", .patch = patch_si3054 },
	{}
	};

	MODULE_ALIAS("snd-hda-codec-id:163c3055");
	MODULE_ALIAS("snd-hda-codec-id:163c3155");
	MODULE_ALIAS("snd-hda-codec-id:11c13026");
	MODULE_ALIAS("snd-hda-codec-id:11c13055");
	MODULE_ALIAS("snd-hda-codec-id:11c13155");
	MODULE_ALIAS("snd-hda-codec-id:10573055");
	MODULE_ALIAS("snd-hda-codec-id:10573057");
	MODULE_ALIAS("snd-hda-codec-id:10573155");
	MODULE_ALIAS("snd-hda-codec-id:11063288");
	MODULE_ALIAS("snd-hda-codec-id:15433155");
	MODULE_ALIAS("snd-hda-codec-id:18540018");

	MODULE_LICENSE("GPL");
	MODULE_DESCRIPTION("Si3054 HD-audio modem codec");

	static struct hda_codec_preset_list si3054_list = {
	.preset = snd_hda_preset_si3054,
	.owner = THIS_MODULE,
	};

	static int __init patch_si3054_init(void)
	{
	return snd_hda_add_codec_preset(&si3054_list);
	}

	static void __exit patch_si3054_exit(void)
	{
	snd_hda_delete_codec_preset(&si3054_list);
	}

	module_init(patch_si3054_init)
	module_exit(patch_si3054_exit)