sound/isa/cmi8330.c - linux - Git at Google

 /*
  *  Driver for C-Media's CMI8330 soundcards.
  *  Copyright (c) by George Talusan <gstalusan@uwaterloo.ca>
  *    http://www.undergrad.math.uwaterloo.ca/~gstalusa
  *
  *   This program 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 program 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
  *
  */

 /*
  * NOTES
  *
  *  The extended registers contain mixer settings which are largely
  *  untapped for the time being.
  *
  *  MPU401 and SPDIF are not supported yet.  I don't have the hardware
  *  to aid in coding and testing, so I won't bother.
  *
  *  To quickly load the module,
  *
  *  modprobe -a snd-cmi8330 sbport=0x220 sbirq=5 sbdma8=1
  *    sbdma16=5 wssport=0x530 wssirq=11 wssdma=0
  *
  *  This card has two mixers and two PCM devices.  I've cheesed it such
  *  that recording and playback can be done through the same device.
  *  The driver "magically" routes the capturing to the AD1848 codec,
  *  and playback to the SB16 codec.  This allows for full-duplex mode
  *  to some extent.
  *  The utilities in alsa-utils are aware of both devices, so passing
  *  the appropriate parameters to amixer and alsactl will give you
  *  full control over both mixers.
  */

 #include <sound/driver.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/pnp.h>
 #include <linux/moduleparam.h>
 #include <sound/core.h>
 #include <sound/ad1848.h>
 #include <sound/sb.h>
 #include <sound/initval.h>

 /*
  */
 /* #define ENABLE_SB_MIXER */
 #define PLAYBACK_ON_SB

 /*
  */
 MODULE_AUTHOR("George Talusan <gstalusan@uwaterloo.ca>");
 MODULE_DESCRIPTION("C-Media CMI8330");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8330,isapnp:{CMI0001,@@@0001,@X@0001}}}");

 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP;
 #ifdef CONFIG_PNP
 static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
 #endif
 static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
 static int sbirq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
 static int sbdma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
 static int sbdma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
 static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
 static int wssirq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
 static int wssdma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;

 module_param_array(index, int, NULL, 0444);
 MODULE_PARM_DESC(index, "Index value for CMI8330 soundcard.");
 module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string  for CMI8330 soundcard.");
 module_param_array(enable, bool, NULL, 0444);
 MODULE_PARM_DESC(enable, "Enable CMI8330 soundcard.");
 #ifdef CONFIG_PNP
 module_param_array(isapnp, bool, NULL, 0444);
 MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
 #endif

 module_param_array(sbport, long, NULL, 0444);
 MODULE_PARM_DESC(sbport, "Port # for CMI8330 SB driver.");
 module_param_array(sbirq, int, NULL, 0444);
 MODULE_PARM_DESC(sbirq, "IRQ # for CMI8330 SB driver.");
 module_param_array(sbdma8, int, NULL, 0444);
 MODULE_PARM_DESC(sbdma8, "DMA8 for CMI8330 SB driver.");
 module_param_array(sbdma16, int, NULL, 0444);
 MODULE_PARM_DESC(sbdma16, "DMA16 for CMI8330 SB driver.");

 module_param_array(wssport, long, NULL, 0444);
 MODULE_PARM_DESC(wssport, "Port # for CMI8330 WSS driver.");
 module_param_array(wssirq, int, NULL, 0444);
 MODULE_PARM_DESC(wssirq, "IRQ # for CMI8330 WSS driver.");
 module_param_array(wssdma, int, NULL, 0444);
 MODULE_PARM_DESC(wssdma, "DMA for CMI8330 WSS driver.");

 #define CMI8330_RMUX3D    16
 #define CMI8330_MUTEMUX   17
 #define CMI8330_OUTPUTVOL 18
 #define CMI8330_MASTVOL   19
 #define CMI8330_LINVOL    20
 #define CMI8330_CDINVOL   21
 #define CMI8330_WAVVOL    22
 #define CMI8330_RECMUX    23
 #define CMI8330_WAVGAIN   24
 #define CMI8330_LINGAIN   25
 #define CMI8330_CDINGAIN  26

 static unsigned char snd_cmi8330_image[((CMI8330_CDINGAIN)-16) + 1] =
 {
 	0x40,			/* 16 - recording mux (SB-mixer-enabled) */
 #ifdef ENABLE_SB_MIXER
 	0x40,			/* 17 - mute mux (Mode2) */
 #else
 	0x0,			/* 17 - mute mux */
 #endif
 	0x0,			/* 18 - vol */
 	0x0,			/* 19 - master volume */
 	0x0,			/* 20 - line-in volume */
 	0x0,			/* 21 - cd-in volume */
 	0x0,			/* 22 - wave volume */
 	0x0,			/* 23 - mute/rec mux */
 	0x0,			/* 24 - wave rec gain */
 	0x0,			/* 25 - line-in rec gain */
 	0x0			/* 26 - cd-in rec gain */
 };

 typedef int (*snd_pcm_open_callback_t)(struct snd_pcm_substream *);

 struct snd_cmi8330 {
 #ifdef CONFIG_PNP
 	struct pnp_dev *cap;
 	struct pnp_dev *play;
 #endif
 	struct snd_card *card;
 	struct snd_ad1848 *wss;
 	struct snd_sb *sb;

 	struct snd_pcm *pcm;
 	struct snd_cmi8330_stream {
 		struct snd_pcm_ops ops;
 		snd_pcm_open_callback_t open;
 		void *private_data; /* sb or wss */
 	} streams[2];
 };

 static struct snd_card *snd_cmi8330_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

 #ifdef CONFIG_PNP

 static struct pnp_card_device_id snd_cmi8330_pnpids[] = {
 	{ .id = "CMI0001", .devs = { { "@@@0001" }, { "@X@0001" } } },
 	{ .id = "" }
 };

 MODULE_DEVICE_TABLE(pnp_card, snd_cmi8330_pnpids);

 #endif


 static struct ad1848_mix_elem snd_cmi8330_controls[] __initdata = {
 AD1848_DOUBLE("Master Playback Volume", 0, CMI8330_MASTVOL, CMI8330_MASTVOL, 4, 0, 15, 0),
 AD1848_SINGLE("Loud Playback Switch", 0, CMI8330_MUTEMUX, 6, 1, 1),
 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
 AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
 AD1848_DOUBLE("Line Playback Switch", 0, CMI8330_MUTEMUX, CMI8330_MUTEMUX, 4, 3, 1, 0),
 AD1848_DOUBLE("Line Playback Volume", 0, CMI8330_LINVOL, CMI8330_LINVOL, 4, 0, 15, 0),
 AD1848_DOUBLE("Line Capture Switch", 0, CMI8330_RMUX3D, CMI8330_RMUX3D, 2, 1, 1, 0),
 AD1848_DOUBLE("Line Capture Volume", 0, CMI8330_LINGAIN, CMI8330_LINGAIN, 4, 0, 15, 0),
 AD1848_DOUBLE("CD Playback Switch", 0, CMI8330_MUTEMUX, CMI8330_MUTEMUX, 2, 1, 1, 0),
 AD1848_DOUBLE("CD Capture Switch", 0, CMI8330_RMUX3D, CMI8330_RMUX3D, 4, 3, 1, 0),
 AD1848_DOUBLE("CD Playback Volume", 0, CMI8330_CDINVOL, CMI8330_CDINVOL, 4, 0, 15, 0),
 AD1848_DOUBLE("CD Capture Volume", 0, CMI8330_CDINGAIN, CMI8330_CDINGAIN, 4, 0, 15, 0),
 AD1848_SINGLE("Mic Playback Switch", 0, CMI8330_MUTEMUX, 0, 1, 0),
 AD1848_SINGLE("Mic Playback Volume", 0, CMI8330_OUTPUTVOL, 0, 7, 0),
 AD1848_SINGLE("Mic Capture Switch", 0, CMI8330_RMUX3D, 0, 1, 0),
 AD1848_SINGLE("Mic Capture Volume", 0, CMI8330_OUTPUTVOL, 5, 7, 0),
 AD1848_DOUBLE("Wavetable Playback Switch", 0, CMI8330_RECMUX, CMI8330_RECMUX, 1, 0, 1, 0),
 AD1848_DOUBLE("Wavetable Playback Volume", 0, CMI8330_WAVVOL, CMI8330_WAVVOL, 4, 0, 15, 0),
 AD1848_DOUBLE("Wavetable Capture Switch", 0, CMI8330_RECMUX, CMI8330_RECMUX, 5, 4, 1, 0),
 AD1848_DOUBLE("Wavetable Capture Volume", 0, CMI8330_WAVGAIN, CMI8330_WAVGAIN, 4, 0, 15, 0),
 AD1848_SINGLE("3D Control - Switch", 0, CMI8330_RMUX3D, 5, 1, 1),
 AD1848_SINGLE("PC Speaker Playback Volume", 0, CMI8330_OUTPUTVOL, 3, 3, 0),
 AD1848_SINGLE("FM Playback Switch", 0, CMI8330_RECMUX, 3, 1, 1),
 AD1848_SINGLE(SNDRV_CTL_NAME_IEC958("Input ",CAPTURE,SWITCH), 0, CMI8330_RMUX3D, 7, 1, 1),
 AD1848_SINGLE(SNDRV_CTL_NAME_IEC958("Input ",PLAYBACK,SWITCH), 0, CMI8330_MUTEMUX, 7, 1, 1),
 };

 #ifdef ENABLE_SB_MIXER
 static struct sbmix_elem cmi8330_sb_mixers[] __initdata = {
 SB_DOUBLE("SB Master Playback Volume", SB_DSP4_MASTER_DEV, (SB_DSP4_MASTER_DEV + 1), 3, 3, 31),
 SB_DOUBLE("Tone Control - Bass", SB_DSP4_BASS_DEV, (SB_DSP4_BASS_DEV + 1), 4, 4, 15),
 SB_DOUBLE("Tone Control - Treble", SB_DSP4_TREBLE_DEV, (SB_DSP4_TREBLE_DEV + 1), 4, 4, 15),
 SB_DOUBLE("SB PCM Playback Volume", SB_DSP4_PCM_DEV, (SB_DSP4_PCM_DEV + 1), 3, 3, 31),
 SB_DOUBLE("SB Synth Playback Volume", SB_DSP4_SYNTH_DEV, (SB_DSP4_SYNTH_DEV + 1), 3, 3, 31),
 SB_DOUBLE("SB CD Playback Switch", SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 2, 1, 1),
 SB_DOUBLE("SB CD Playback Volume", SB_DSP4_CD_DEV, (SB_DSP4_CD_DEV + 1), 3, 3, 31),
 SB_DOUBLE("SB Line Playback Switch", SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 4, 3, 1),
 SB_DOUBLE("SB Line Playback Volume", SB_DSP4_LINE_DEV, (SB_DSP4_LINE_DEV + 1), 3, 3, 31),
 SB_SINGLE("SB Mic Playback Switch", SB_DSP4_OUTPUT_SW, 0, 1),
 SB_SINGLE("SB Mic Playback Volume", SB_DSP4_MIC_DEV, 3, 31),
 SB_SINGLE("SB PC Speaker Volume", SB_DSP4_SPEAKER_DEV, 6, 3),
 SB_DOUBLE("SB Capture Volume", SB_DSP4_IGAIN_DEV, (SB_DSP4_IGAIN_DEV + 1), 6, 6, 3),
 SB_DOUBLE("SB Playback Volume", SB_DSP4_OGAIN_DEV, (SB_DSP4_OGAIN_DEV + 1), 6, 6, 3),
 SB_SINGLE("SB Mic Auto Gain", SB_DSP4_MIC_AGC, 0, 1),
 };

 static unsigned char cmi8330_sb_init_values[][2] __initdata = {
 	{ SB_DSP4_MASTER_DEV + 0, 0 },
 	{ SB_DSP4_MASTER_DEV + 1, 0 },
 	{ SB_DSP4_PCM_DEV + 0, 0 },
 	{ SB_DSP4_PCM_DEV + 1, 0 },
 	{ SB_DSP4_SYNTH_DEV + 0, 0 },
 	{ SB_DSP4_SYNTH_DEV + 1, 0 },
 	{ SB_DSP4_INPUT_LEFT, 0 },
 	{ SB_DSP4_INPUT_RIGHT, 0 },
 	{ SB_DSP4_OUTPUT_SW, 0 },
 	{ SB_DSP4_SPEAKER_DEV, 0 },
 };


 static int __devinit cmi8330_add_sb_mixers(struct snd_sb *chip)
 {
 	int idx, err;
 	unsigned long flags;

 	spin_lock_irqsave(&chip->mixer_lock, flags);
 	snd_sbmixer_write(chip, 0x00, 0x00);		/* mixer reset */
 	spin_unlock_irqrestore(&chip->mixer_lock, flags);

 	/* mute and zero volume channels */
 	for (idx = 0; idx < ARRAY_SIZE(cmi8330_sb_init_values); idx++) {
 		spin_lock_irqsave(&chip->mixer_lock, flags);
 		snd_sbmixer_write(chip, cmi8330_sb_init_values[idx][0],
 				  cmi8330_sb_init_values[idx][1]);
 		spin_unlock_irqrestore(&chip->mixer_lock, flags);
 	}

 	for (idx = 0; idx < ARRAY_SIZE(cmi8330_sb_mixers); idx++) {
 		if ((err = snd_sbmixer_add_ctl_elem(chip, &cmi8330_sb_mixers[idx])) < 0)
 			return err;
 	}
 	return 0;
 }
 #endif

 static int __devinit snd_cmi8330_mixer(struct snd_card *card, struct snd_cmi8330 *acard)
 {
 	unsigned int idx;
 	int err;

 	strcpy(card->mixername, "CMI8330/C3D");

 	for (idx = 0; idx < ARRAY_SIZE(snd_cmi8330_controls); idx++) {
 		if ((err = snd_ad1848_add_ctl_elem(acard->wss, &snd_cmi8330_controls[idx])) < 0)
 			return err;
 	}

 #ifdef ENABLE_SB_MIXER
 	if ((err = cmi8330_add_sb_mixers(acard->sb)) < 0)
 		return err;
 #endif
 	return 0;
 }

 #ifdef CONFIG_PNP
 static int __devinit snd_cmi8330_pnp(int dev, struct snd_cmi8330 *acard,
 				     struct pnp_card_link *card,
 				     const struct pnp_card_device_id *id)
 {
 	struct pnp_dev *pdev;
 	struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
 	int err;

 	acard->cap = pnp_request_card_device(card, id->devs[0].id, NULL);
 	if (acard->cap == NULL) {
 		kfree(cfg);
 		return -EBUSY;
 	}
 	acard->play = pnp_request_card_device(card, id->devs[1].id, NULL);
 	if (acard->play == NULL) {
 		kfree(cfg);
 		return -EBUSY;
 	}

 	pdev = acard->cap;
 	pnp_init_resource_table(cfg);
 	/* allocate AD1848 resources */
 	if (wssport[dev] != SNDRV_AUTO_PORT)
 		pnp_resource_change(&cfg->port_resource[0], wssport[dev], 8);
 	if (wssdma[dev] != SNDRV_AUTO_DMA)
 		pnp_resource_change(&cfg->dma_resource[0], wssdma[dev], 1);
 	if (wssirq[dev] != SNDRV_AUTO_IRQ)
 		pnp_resource_change(&cfg->irq_resource[0], wssirq[dev], 1);

 	err = pnp_manual_config_dev(pdev, cfg, 0);
 	if (err < 0)
 		snd_printk(KERN_ERR "CMI8330/C3D (AD1848) PnP manual resources are invalid, using auto config\n");
 	err = pnp_activate_dev(pdev);
 	if (err < 0) {
 		snd_printk(KERN_ERR "CMI8330/C3D (AD1848) PnP configure failure\n");
 		kfree(cfg);
 		return -EBUSY;
 	}
 	wssport[dev] = pnp_port_start(pdev, 0);
 	wssdma[dev] = pnp_dma(pdev, 0);
 	wssirq[dev] = pnp_irq(pdev, 0);

 	/* allocate SB16 resources */
 	pdev = acard->play;
 	pnp_init_resource_table(cfg);
 	if (sbport[dev] != SNDRV_AUTO_PORT)
 		pnp_resource_change(&cfg->port_resource[0], sbport[dev], 16);
 	if (sbdma8[dev] != SNDRV_AUTO_DMA)
 		pnp_resource_change(&cfg->dma_resource[0], sbdma8[dev], 1);
 	if (sbdma16[dev] != SNDRV_AUTO_DMA)
 		pnp_resource_change(&cfg->dma_resource[1], sbdma16[dev], 1);
 	if (sbirq[dev] != SNDRV_AUTO_IRQ)
 		pnp_resource_change(&cfg->irq_resource[0], sbirq[dev], 1);

 	err = pnp_manual_config_dev(pdev, cfg, 0);
 	if (err < 0)
 		snd_printk(KERN_ERR "CMI8330/C3D (SB16) PnP manual resources are invalid, using auto config\n");
 	err = pnp_activate_dev(pdev);
 	if (err < 0) {
 		snd_printk(KERN_ERR "CMI8330/C3D (SB16) PnP configure failure\n");
 		kfree(cfg);
 		return -EBUSY;
 	}
 	sbport[dev] = pnp_port_start(pdev, 0);
 	sbdma8[dev] = pnp_dma(pdev, 0);
 	sbdma16[dev] = pnp_dma(pdev, 1);
 	sbirq[dev] = pnp_irq(pdev, 0);

 	kfree(cfg);
 	return 0;
 }
 #endif

 /*
  * PCM interface
  *
  * since we call the different chip interfaces for playback and capture
  * directions, we need a trick.
  *
  * - copy the ops for each direction into a local record.
  * - replace the open callback with the new one, which replaces the
  *   substream->private_data with the corresponding chip instance
  *   and calls again the original open callback of the chip.
  *
  */

 #ifdef PLAYBACK_ON_SB
 #define CMI_SB_STREAM	SNDRV_PCM_STREAM_PLAYBACK
 #define CMI_AD_STREAM	SNDRV_PCM_STREAM_CAPTURE
 #else
 #define CMI_SB_STREAM	SNDRV_PCM_STREAM_CAPTURE
 #define CMI_AD_STREAM	SNDRV_PCM_STREAM_PLAYBACK
 #endif

 static int snd_cmi8330_playback_open(struct snd_pcm_substream *substream)
 {
 	struct snd_cmi8330 *chip = snd_pcm_substream_chip(substream);

 	/* replace the private_data and call the original open callback */
 	substream->private_data = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].private_data;
 	return chip->streams[SNDRV_PCM_STREAM_PLAYBACK].open(substream);
 }

 static int snd_cmi8330_capture_open(struct snd_pcm_substream *substream)
 {
 	struct snd_cmi8330 *chip = snd_pcm_substream_chip(substream);

 	/* replace the private_data and call the original open callback */
 	substream->private_data = chip->streams[SNDRV_PCM_STREAM_CAPTURE].private_data;
 	return chip->streams[SNDRV_PCM_STREAM_CAPTURE].open(substream);
 }

 static int __devinit snd_cmi8330_pcm(struct snd_card *card, struct snd_cmi8330 *chip)
 {
 	struct snd_pcm *pcm;
 	const struct snd_pcm_ops *ops;
 	int err;
 	static snd_pcm_open_callback_t cmi_open_callbacks[2] = {
 		snd_cmi8330_playback_open,
 		snd_cmi8330_capture_open
 	};

 	if ((err = snd_pcm_new(card, "CMI8330", 0, 1, 1, &pcm)) < 0)
 		return err;
 	strcpy(pcm->name, "CMI8330");
 	pcm->private_data = chip;

 	/* SB16 */
 	ops = snd_sb16dsp_get_pcm_ops(CMI_SB_STREAM);
 	chip->streams[CMI_SB_STREAM].ops = *ops;
 	chip->streams[CMI_SB_STREAM].open = ops->open;
 	chip->streams[CMI_SB_STREAM].ops.open = cmi_open_callbacks[CMI_SB_STREAM];
 	chip->streams[CMI_SB_STREAM].private_data = chip->sb;

 	/* AD1848 */
 	ops = snd_ad1848_get_pcm_ops(CMI_AD_STREAM);
 	chip->streams[CMI_AD_STREAM].ops = *ops;
 	chip->streams[CMI_AD_STREAM].open = ops->open;
 	chip->streams[CMI_AD_STREAM].ops.open = cmi_open_callbacks[CMI_AD_STREAM];
 	chip->streams[CMI_AD_STREAM].private_data = chip->wss;

 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK].ops);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &chip->streams[SNDRV_PCM_STREAM_CAPTURE].ops);

 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 					      snd_dma_isa_data(),
 					      64*1024, 128*1024);
 	chip->pcm = pcm;

 	return 0;
 }


 /*
  */

 #ifdef CONFIG_PNP
 #define is_isapnp_selected(dev)		isapnp[dev]
 #else
 #define is_isapnp_selected(dev)		0
 #endif

 #define PFX	"cmi8330: "

 static int __devinit snd_cmi8330_probe(int dev,
 				       struct pnp_card_link *pcard,
 				       const struct pnp_card_device_id *pid)
 {
 	struct snd_card *card;
 	struct snd_cmi8330 *acard;
 	int i, err;

 	if (! is_isapnp_selected(dev)) {
 		if (wssport[dev] == SNDRV_AUTO_PORT) {
 			snd_printk(KERN_ERR PFX "specify wssport\n");
 			return -EINVAL;
 		}
 		if (sbport[dev] == SNDRV_AUTO_PORT) {
 			snd_printk(KERN_ERR PFX "specify sbport\n");
 			return -EINVAL;
 		}
 	}

 	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 			    sizeof(struct snd_cmi8330));
 	if (card == NULL) {
 		snd_printk(KERN_ERR PFX "could not get a new card\n");
 		return -ENOMEM;
 	}
 	acard = (struct snd_cmi8330 *)card->private_data;
 	acard->card = card;

 #ifdef CONFIG_PNP
 	if (isapnp[dev]) {
 		if ((err = snd_cmi8330_pnp(dev, acard, pcard, pid)) < 0) {
 			snd_printk(KERN_ERR PFX "PnP detection failed\n");
 			goto _err;
 		}
 		snd_card_set_dev(card, &pcard->card->dev);
 	}
 #endif

 	if ((err = snd_ad1848_create(card,
 				     wssport[dev] + 4,
 				     wssirq[dev],
 				     wssdma[dev],
 				     AD1848_HW_DETECT,
 				     &acard->wss)) < 0) {
 		snd_printk(KERN_ERR PFX "(AD1848) device busy??\n");
 		goto _err;
 	}
 	if (acard->wss->hardware != AD1848_HW_CMI8330) {
 		snd_printk(KERN_ERR PFX "(AD1848) not found during probe\n");
 		err = -ENODEV;
 		goto _err;
 	}

 	if ((err = snd_sbdsp_create(card, sbport[dev],
 				    sbirq[dev],
 				    snd_sb16dsp_interrupt,
 				    sbdma8[dev],
 				    sbdma16[dev],
 				    SB_HW_AUTO, &acard->sb)) < 0) {
 		snd_printk(KERN_ERR PFX "(SB16) device busy??\n");
 		goto _err;
 	}
 	if (acard->sb->hardware != SB_HW_16) {
 		snd_printk(KERN_ERR PFX "(SB16) not found during probe\n");
 		goto _err;
 	}

 	snd_ad1848_out(acard->wss, AD1848_MISC_INFO, 0x40); /* switch on MODE2 */
 	for (i = CMI8330_RMUX3D; i <= CMI8330_CDINGAIN; i++)
 		snd_ad1848_out(acard->wss, i, snd_cmi8330_image[i - CMI8330_RMUX3D]);

 	if ((err = snd_cmi8330_mixer(card, acard)) < 0) {
 		snd_printk(KERN_ERR PFX "failed to create mixers\n");
 		goto _err;
 	}

 	if ((err = snd_cmi8330_pcm(card, acard)) < 0) {
 		snd_printk(KERN_ERR PFX "failed to create pcms\n");
 		goto _err;
 	}

 	strcpy(card->driver, "CMI8330/C3D");
 	strcpy(card->shortname, "C-Media CMI8330/C3D");
 	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 		card->shortname,
 		acard->wss->port,
 		wssirq[dev],
 		wssdma[dev]);

 	if ((err = snd_card_set_generic_dev(card)) < 0)
 		goto _err;

 	if ((err = snd_card_register(card)) < 0)
 		goto _err;

 	if (pcard)
 		pnp_set_card_drvdata(pcard, card);
 	else
 		snd_cmi8330_legacy[dev] = card;
 	return 0;

  _err:
 	snd_card_free(card);
 	return err;
 }

 #ifdef CONFIG_PNP
 static int __devinit snd_cmi8330_pnp_detect(struct pnp_card_link *card,
 					    const struct pnp_card_device_id *id)
 {
 	static int dev;
 	int res;

 	for ( ; dev < SNDRV_CARDS; dev++) {
 		if (!enable[dev] || !isapnp[dev])
 			continue;
 		res = snd_cmi8330_probe(dev, card, id);
 		if (res < 0)
 			return res;
 		dev++;
 		return 0;
 	}
 	return -ENODEV;
 }

 static void __devexit snd_cmi8330_pnp_remove(struct pnp_card_link * pcard)
 {
 	struct snd_card *card = (struct snd_card *) pnp_get_card_drvdata(pcard);

 	snd_card_disconnect(card);
 	snd_card_free_in_thread(card);
 }

 static struct pnp_card_driver cmi8330_pnpc_driver = {
 	.flags = PNP_DRIVER_RES_DISABLE,
 	.name = "cmi8330",
 	.id_table = snd_cmi8330_pnpids,
 	.probe = snd_cmi8330_pnp_detect,
 	.remove = __devexit_p(snd_cmi8330_pnp_remove),
 };
 #endif /* CONFIG_PNP */

 static int __init alsa_card_cmi8330_init(void)
 {
 	int dev, cards = 0;

 	for (dev = 0; dev < SNDRV_CARDS; dev++) {
 		if (!enable[dev])
 			continue;
 		if (is_isapnp_selected(dev))
 			continue;
 		if (snd_cmi8330_probe(dev, NULL, NULL) >= 0)
 			cards++;
 	}
 #ifdef CONFIG_PNP
 	cards += pnp_register_card_driver(&cmi8330_pnpc_driver);
 #endif

 	if (!cards) {
 #ifdef CONFIG_PNP
 		pnp_unregister_card_driver(&cmi8330_pnpc_driver);
 #endif
 #ifdef MODULE
 		snd_printk(KERN_ERR "CMI8330 not found or device busy\n");
 #endif
 		return -ENODEV;
 	}
 	return 0;
 }

 static void __exit alsa_card_cmi8330_exit(void)
 {
 	int i;

 #ifdef CONFIG_PNP
 	/* PnP cards first */
 	pnp_unregister_card_driver(&cmi8330_pnpc_driver);
 #endif
 	for (i = 0; i < SNDRV_CARDS; i++)
 		snd_card_free(snd_cmi8330_legacy[i]);
 }

 module_init(alsa_card_cmi8330_init)
 module_exit(alsa_card_cmi8330_exit)
	/*
	* Driver for C-Media's CMI8330 soundcards.
	* Copyright (c) by George Talusan <gstalusan@uwaterloo.ca>
	* http://www.undergrad.math.uwaterloo.ca/~gstalusa
	*
	* This program 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 program 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
	*
	*/

	/*
	* NOTES
	*
	* The extended registers contain mixer settings which are largely
	* untapped for the time being.
	*
	* MPU401 and SPDIF are not supported yet. I don't have the hardware
	* to aid in coding and testing, so I won't bother.
	*
	* To quickly load the module,
	*
	* modprobe -a snd-cmi8330 sbport=0x220 sbirq=5 sbdma8=1
	* sbdma16=5 wssport=0x530 wssirq=11 wssdma=0
	*
	* This card has two mixers and two PCM devices. I've cheesed it such
	* that recording and playback can be done through the same device.
	* The driver "magically" routes the capturing to the AD1848 codec,
	* and playback to the SB16 codec. This allows for full-duplex mode
	* to some extent.
	* The utilities in alsa-utils are aware of both devices, so passing
	* the appropriate parameters to amixer and alsactl will give you
	* full control over both mixers.
	*/

	#include <sound/driver.h>
	#include <linux/init.h>
	#include <linux/slab.h>
	#include <linux/pnp.h>
	#include <linux/moduleparam.h>
	#include <sound/core.h>
	#include <sound/ad1848.h>
	#include <sound/sb.h>
	#include <sound/initval.h>

	/*
	*/
	/* #define ENABLE_SB_MIXER */
	#define PLAYBACK_ON_SB

	/*
	*/
	MODULE_AUTHOR("George Talusan <gstalusan@uwaterloo.ca>");
	MODULE_DESCRIPTION("C-Media CMI8330");
	MODULE_LICENSE("GPL");
	MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8330,isapnp:{CMI0001,@@@0001,@X@0001}}}");

	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
	static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP;
	#ifdef CONFIG_PNP
	static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
	#endif
	static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
	static int sbirq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
	static int sbdma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
	static int sbdma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
	static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
	static int wssirq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
	static int wssdma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;

	module_param_array(index, int, NULL, 0444);
	MODULE_PARM_DESC(index, "Index value for CMI8330 soundcard.");
	module_param_array(id, charp, NULL, 0444);
	MODULE_PARM_DESC(id, "ID string for CMI8330 soundcard.");
	module_param_array(enable, bool, NULL, 0444);
	MODULE_PARM_DESC(enable, "Enable CMI8330 soundcard.");
	#ifdef CONFIG_PNP
	module_param_array(isapnp, bool, NULL, 0444);
	MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
	#endif

	module_param_array(sbport, long, NULL, 0444);
	MODULE_PARM_DESC(sbport, "Port # for CMI8330 SB driver.");
	module_param_array(sbirq, int, NULL, 0444);
	MODULE_PARM_DESC(sbirq, "IRQ # for CMI8330 SB driver.");
	module_param_array(sbdma8, int, NULL, 0444);
	MODULE_PARM_DESC(sbdma8, "DMA8 for CMI8330 SB driver.");
	module_param_array(sbdma16, int, NULL, 0444);
	MODULE_PARM_DESC(sbdma16, "DMA16 for CMI8330 SB driver.");

	module_param_array(wssport, long, NULL, 0444);
	MODULE_PARM_DESC(wssport, "Port # for CMI8330 WSS driver.");
	module_param_array(wssirq, int, NULL, 0444);
	MODULE_PARM_DESC(wssirq, "IRQ # for CMI8330 WSS driver.");
	module_param_array(wssdma, int, NULL, 0444);
	MODULE_PARM_DESC(wssdma, "DMA for CMI8330 WSS driver.");

	#define CMI8330_RMUX3D 16
	#define CMI8330_MUTEMUX 17
	#define CMI8330_OUTPUTVOL 18
	#define CMI8330_MASTVOL 19
	#define CMI8330_LINVOL 20
	#define CMI8330_CDINVOL 21
	#define CMI8330_WAVVOL 22
	#define CMI8330_RECMUX 23
	#define CMI8330_WAVGAIN 24
	#define CMI8330_LINGAIN 25
	#define CMI8330_CDINGAIN 26

	static unsigned char snd_cmi8330_image[((CMI8330_CDINGAIN)-16) + 1] =
	{
	0x40, /* 16 - recording mux (SB-mixer-enabled) */
	#ifdef ENABLE_SB_MIXER
	0x40, /* 17 - mute mux (Mode2) */
	#else
	0x0, /* 17 - mute mux */
	#endif
	0x0, /* 18 - vol */
	0x0, /* 19 - master volume */
	0x0, /* 20 - line-in volume */
	0x0, /* 21 - cd-in volume */
	0x0, /* 22 - wave volume */
	0x0, /* 23 - mute/rec mux */
	0x0, /* 24 - wave rec gain */
	0x0, /* 25 - line-in rec gain */
	0x0 /* 26 - cd-in rec gain */
	};

	typedef int (snd_pcm_open_callback_t)(struct snd_pcm_substream );

	struct snd_cmi8330 {
	#ifdef CONFIG_PNP
	struct pnp_dev *cap;
	struct pnp_dev *play;
	#endif
	struct snd_card *card;
	struct snd_ad1848 *wss;
	struct snd_sb *sb;

	struct snd_pcm *pcm;
	struct snd_cmi8330_stream {
	struct snd_pcm_ops ops;
	snd_pcm_open_callback_t open;
	void private_data; / sb or wss */
	} streams[2];
	};

	static struct snd_card *snd_cmi8330_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

	#ifdef CONFIG_PNP

	static struct pnp_card_device_id snd_cmi8330_pnpids[] = {
	{ .id = "CMI0001", .devs = { { "@@@0001" }, { "@X@0001" } } },
	{ .id = "" }
	};

	MODULE_DEVICE_TABLE(pnp_card, snd_cmi8330_pnpids);

	#endif


	static struct ad1848_mix_elem snd_cmi8330_controls[] __initdata = {
	AD1848_DOUBLE("Master Playback Volume", 0, CMI8330_MASTVOL, CMI8330_MASTVOL, 4, 0, 15, 0),
	AD1848_SINGLE("Loud Playback Switch", 0, CMI8330_MUTEMUX, 6, 1, 1),
	AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
	AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
	AD1848_DOUBLE("Line Playback Switch", 0, CMI8330_MUTEMUX, CMI8330_MUTEMUX, 4, 3, 1, 0),
	AD1848_DOUBLE("Line Playback Volume", 0, CMI8330_LINVOL, CMI8330_LINVOL, 4, 0, 15, 0),
	AD1848_DOUBLE("Line Capture Switch", 0, CMI8330_RMUX3D, CMI8330_RMUX3D, 2, 1, 1, 0),
	AD1848_DOUBLE("Line Capture Volume", 0, CMI8330_LINGAIN, CMI8330_LINGAIN, 4, 0, 15, 0),
	AD1848_DOUBLE("CD Playback Switch", 0, CMI8330_MUTEMUX, CMI8330_MUTEMUX, 2, 1, 1, 0),
	AD1848_DOUBLE("CD Capture Switch", 0, CMI8330_RMUX3D, CMI8330_RMUX3D, 4, 3, 1, 0),
	AD1848_DOUBLE("CD Playback Volume", 0, CMI8330_CDINVOL, CMI8330_CDINVOL, 4, 0, 15, 0),
	AD1848_DOUBLE("CD Capture Volume", 0, CMI8330_CDINGAIN, CMI8330_CDINGAIN, 4, 0, 15, 0),
	AD1848_SINGLE("Mic Playback Switch", 0, CMI8330_MUTEMUX, 0, 1, 0),
	AD1848_SINGLE("Mic Playback Volume", 0, CMI8330_OUTPUTVOL, 0, 7, 0),
	AD1848_SINGLE("Mic Capture Switch", 0, CMI8330_RMUX3D, 0, 1, 0),
	AD1848_SINGLE("Mic Capture Volume", 0, CMI8330_OUTPUTVOL, 5, 7, 0),
	AD1848_DOUBLE("Wavetable Playback Switch", 0, CMI8330_RECMUX, CMI8330_RECMUX, 1, 0, 1, 0),
	AD1848_DOUBLE("Wavetable Playback Volume", 0, CMI8330_WAVVOL, CMI8330_WAVVOL, 4, 0, 15, 0),
	AD1848_DOUBLE("Wavetable Capture Switch", 0, CMI8330_RECMUX, CMI8330_RECMUX, 5, 4, 1, 0),
	AD1848_DOUBLE("Wavetable Capture Volume", 0, CMI8330_WAVGAIN, CMI8330_WAVGAIN, 4, 0, 15, 0),
	AD1848_SINGLE("3D Control - Switch", 0, CMI8330_RMUX3D, 5, 1, 1),
	AD1848_SINGLE("PC Speaker Playback Volume", 0, CMI8330_OUTPUTVOL, 3, 3, 0),
	AD1848_SINGLE("FM Playback Switch", 0, CMI8330_RECMUX, 3, 1, 1),
	AD1848_SINGLE(SNDRV_CTL_NAME_IEC958("Input ",CAPTURE,SWITCH), 0, CMI8330_RMUX3D, 7, 1, 1),
	AD1848_SINGLE(SNDRV_CTL_NAME_IEC958("Input ",PLAYBACK,SWITCH), 0, CMI8330_MUTEMUX, 7, 1, 1),
	};

	#ifdef ENABLE_SB_MIXER
	static struct sbmix_elem cmi8330_sb_mixers[] __initdata = {
	SB_DOUBLE("SB Master Playback Volume", SB_DSP4_MASTER_DEV, (SB_DSP4_MASTER_DEV + 1), 3, 3, 31),
	SB_DOUBLE("Tone Control - Bass", SB_DSP4_BASS_DEV, (SB_DSP4_BASS_DEV + 1), 4, 4, 15),
	SB_DOUBLE("Tone Control - Treble", SB_DSP4_TREBLE_DEV, (SB_DSP4_TREBLE_DEV + 1), 4, 4, 15),
	SB_DOUBLE("SB PCM Playback Volume", SB_DSP4_PCM_DEV, (SB_DSP4_PCM_DEV + 1), 3, 3, 31),
	SB_DOUBLE("SB Synth Playback Volume", SB_DSP4_SYNTH_DEV, (SB_DSP4_SYNTH_DEV + 1), 3, 3, 31),
	SB_DOUBLE("SB CD Playback Switch", SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 2, 1, 1),
	SB_DOUBLE("SB CD Playback Volume", SB_DSP4_CD_DEV, (SB_DSP4_CD_DEV + 1), 3, 3, 31),
	SB_DOUBLE("SB Line Playback Switch", SB_DSP4_OUTPUT_SW, SB_DSP4_OUTPUT_SW, 4, 3, 1),
	SB_DOUBLE("SB Line Playback Volume", SB_DSP4_LINE_DEV, (SB_DSP4_LINE_DEV + 1), 3, 3, 31),
	SB_SINGLE("SB Mic Playback Switch", SB_DSP4_OUTPUT_SW, 0, 1),
	SB_SINGLE("SB Mic Playback Volume", SB_DSP4_MIC_DEV, 3, 31),
	SB_SINGLE("SB PC Speaker Volume", SB_DSP4_SPEAKER_DEV, 6, 3),
	SB_DOUBLE("SB Capture Volume", SB_DSP4_IGAIN_DEV, (SB_DSP4_IGAIN_DEV + 1), 6, 6, 3),
	SB_DOUBLE("SB Playback Volume", SB_DSP4_OGAIN_DEV, (SB_DSP4_OGAIN_DEV + 1), 6, 6, 3),
	SB_SINGLE("SB Mic Auto Gain", SB_DSP4_MIC_AGC, 0, 1),
	};

	static unsigned char cmi8330_sb_init_values[][2] __initdata = {
	{ SB_DSP4_MASTER_DEV + 0, 0 },
	{ SB_DSP4_MASTER_DEV + 1, 0 },
	{ SB_DSP4_PCM_DEV + 0, 0 },
	{ SB_DSP4_PCM_DEV + 1, 0 },
	{ SB_DSP4_SYNTH_DEV + 0, 0 },
	{ SB_DSP4_SYNTH_DEV + 1, 0 },
	{ SB_DSP4_INPUT_LEFT, 0 },
	{ SB_DSP4_INPUT_RIGHT, 0 },
	{ SB_DSP4_OUTPUT_SW, 0 },
	{ SB_DSP4_SPEAKER_DEV, 0 },
	};


	static int __devinit cmi8330_add_sb_mixers(struct snd_sb *chip)
	{
	int idx, err;
	unsigned long flags;

	spin_lock_irqsave(&chip->mixer_lock, flags);
	snd_sbmixer_write(chip, 0x00, 0x00); /* mixer reset */
	spin_unlock_irqrestore(&chip->mixer_lock, flags);

	/* mute and zero volume channels */
	for (idx = 0; idx < ARRAY_SIZE(cmi8330_sb_init_values); idx++) {
	spin_lock_irqsave(&chip->mixer_lock, flags);
	snd_sbmixer_write(chip, cmi8330_sb_init_values[idx][0],
	cmi8330_sb_init_values[idx][1]);
	spin_unlock_irqrestore(&chip->mixer_lock, flags);
	}

	for (idx = 0; idx < ARRAY_SIZE(cmi8330_sb_mixers); idx++) {
	if ((err = snd_sbmixer_add_ctl_elem(chip, &cmi8330_sb_mixers[idx])) < 0)
	return err;
	}
	return 0;
	}
	#endif

	static int __devinit snd_cmi8330_mixer(struct snd_card card, struct snd_cmi8330 acard)
	{
	unsigned int idx;
	int err;

	strcpy(card->mixername, "CMI8330/C3D");

	for (idx = 0; idx < ARRAY_SIZE(snd_cmi8330_controls); idx++) {
	if ((err = snd_ad1848_add_ctl_elem(acard->wss, &snd_cmi8330_controls[idx])) < 0)
	return err;
	}

	#ifdef ENABLE_SB_MIXER
	if ((err = cmi8330_add_sb_mixers(acard->sb)) < 0)
	return err;
	#endif
	return 0;
	}

	#ifdef CONFIG_PNP
	static int __devinit snd_cmi8330_pnp(int dev, struct snd_cmi8330 *acard,
	struct pnp_card_link *card,
	const struct pnp_card_device_id *id)
	{
	struct pnp_dev *pdev;
	struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
	int err;

	acard->cap = pnp_request_card_device(card, id->devs[0].id, NULL);
	if (acard->cap == NULL) {
	kfree(cfg);
	return -EBUSY;
	}
	acard->play = pnp_request_card_device(card, id->devs[1].id, NULL);
	if (acard->play == NULL) {
	kfree(cfg);
	return -EBUSY;
	}

	pdev = acard->cap;
	pnp_init_resource_table(cfg);
	/* allocate AD1848 resources */
	if (wssport[dev] != SNDRV_AUTO_PORT)
	pnp_resource_change(&cfg->port_resource[0], wssport[dev], 8);
	if (wssdma[dev] != SNDRV_AUTO_DMA)
	pnp_resource_change(&cfg->dma_resource[0], wssdma[dev], 1);
	if (wssirq[dev] != SNDRV_AUTO_IRQ)
	pnp_resource_change(&cfg->irq_resource[0], wssirq[dev], 1);

	err = pnp_manual_config_dev(pdev, cfg, 0);
	if (err < 0)
	snd_printk(KERN_ERR "CMI8330/C3D (AD1848) PnP manual resources are invalid, using auto config\n");
	err = pnp_activate_dev(pdev);
	if (err < 0) {
	snd_printk(KERN_ERR "CMI8330/C3D (AD1848) PnP configure failure\n");
	kfree(cfg);
	return -EBUSY;
	}
	wssport[dev] = pnp_port_start(pdev, 0);
	wssdma[dev] = pnp_dma(pdev, 0);
	wssirq[dev] = pnp_irq(pdev, 0);

	/* allocate SB16 resources */
	pdev = acard->play;
	pnp_init_resource_table(cfg);
	if (sbport[dev] != SNDRV_AUTO_PORT)
	pnp_resource_change(&cfg->port_resource[0], sbport[dev], 16);
	if (sbdma8[dev] != SNDRV_AUTO_DMA)
	pnp_resource_change(&cfg->dma_resource[0], sbdma8[dev], 1);
	if (sbdma16[dev] != SNDRV_AUTO_DMA)
	pnp_resource_change(&cfg->dma_resource[1], sbdma16[dev], 1);
	if (sbirq[dev] != SNDRV_AUTO_IRQ)
	pnp_resource_change(&cfg->irq_resource[0], sbirq[dev], 1);

	err = pnp_manual_config_dev(pdev, cfg, 0);
	if (err < 0)
	snd_printk(KERN_ERR "CMI8330/C3D (SB16) PnP manual resources are invalid, using auto config\n");
	err = pnp_activate_dev(pdev);
	if (err < 0) {
	snd_printk(KERN_ERR "CMI8330/C3D (SB16) PnP configure failure\n");
	kfree(cfg);
	return -EBUSY;
	}
	sbport[dev] = pnp_port_start(pdev, 0);
	sbdma8[dev] = pnp_dma(pdev, 0);
	sbdma16[dev] = pnp_dma(pdev, 1);
	sbirq[dev] = pnp_irq(pdev, 0);

	kfree(cfg);
	return 0;
	}
	#endif

	/*
	* PCM interface
	*
	* since we call the different chip interfaces for playback and capture
	* directions, we need a trick.
	*
	* - copy the ops for each direction into a local record.
	* - replace the open callback with the new one, which replaces the
	* substream->private_data with the corresponding chip instance
	* and calls again the original open callback of the chip.
	*
	*/

	#ifdef PLAYBACK_ON_SB
	#define CMI_SB_STREAM SNDRV_PCM_STREAM_PLAYBACK
	#define CMI_AD_STREAM SNDRV_PCM_STREAM_CAPTURE
	#else
	#define CMI_SB_STREAM SNDRV_PCM_STREAM_CAPTURE
	#define CMI_AD_STREAM SNDRV_PCM_STREAM_PLAYBACK
	#endif

	static int snd_cmi8330_playback_open(struct snd_pcm_substream *substream)
	{
	struct snd_cmi8330 *chip = snd_pcm_substream_chip(substream);

	/* replace the private_data and call the original open callback */
	substream->private_data = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].private_data;
	return chip->streams[SNDRV_PCM_STREAM_PLAYBACK].open(substream);
	}

	static int snd_cmi8330_capture_open(struct snd_pcm_substream *substream)
	{
	struct snd_cmi8330 *chip = snd_pcm_substream_chip(substream);

	/* replace the private_data and call the original open callback */
	substream->private_data = chip->streams[SNDRV_PCM_STREAM_CAPTURE].private_data;
	return chip->streams[SNDRV_PCM_STREAM_CAPTURE].open(substream);
	}

	static int __devinit snd_cmi8330_pcm(struct snd_card card, struct snd_cmi8330 chip)
	{
	struct snd_pcm *pcm;
	const struct snd_pcm_ops *ops;
	int err;
	static snd_pcm_open_callback_t cmi_open_callbacks[2] = {
	snd_cmi8330_playback_open,
	snd_cmi8330_capture_open
	};

	if ((err = snd_pcm_new(card, "CMI8330", 0, 1, 1, &pcm)) < 0)
	return err;
	strcpy(pcm->name, "CMI8330");
	pcm->private_data = chip;

	/* SB16 */
	ops = snd_sb16dsp_get_pcm_ops(CMI_SB_STREAM);
	chip->streams[CMI_SB_STREAM].ops = *ops;
	chip->streams[CMI_SB_STREAM].open = ops->open;
	chip->streams[CMI_SB_STREAM].ops.open = cmi_open_callbacks[CMI_SB_STREAM];
	chip->streams[CMI_SB_STREAM].private_data = chip->sb;

	/* AD1848 */
	ops = snd_ad1848_get_pcm_ops(CMI_AD_STREAM);
	chip->streams[CMI_AD_STREAM].ops = *ops;
	chip->streams[CMI_AD_STREAM].open = ops->open;
	chip->streams[CMI_AD_STREAM].ops.open = cmi_open_callbacks[CMI_AD_STREAM];
	chip->streams[CMI_AD_STREAM].private_data = chip->wss;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK].ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &chip->streams[SNDRV_PCM_STREAM_CAPTURE].ops);

	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
	snd_dma_isa_data(),
	641024, 1281024);
	chip->pcm = pcm;

	return 0;
	}


	/*
	*/

	#ifdef CONFIG_PNP
	#define is_isapnp_selected(dev) isapnp[dev]
	#else
	#define is_isapnp_selected(dev) 0
	#endif

	#define PFX "cmi8330: "

	static int __devinit snd_cmi8330_probe(int dev,
	struct pnp_card_link *pcard,
	const struct pnp_card_device_id *pid)
	{
	struct snd_card *card;
	struct snd_cmi8330 *acard;
	int i, err;

	if (! is_isapnp_selected(dev)) {
	if (wssport[dev] == SNDRV_AUTO_PORT) {
	snd_printk(KERN_ERR PFX "specify wssport\n");
	return -EINVAL;
	}
	if (sbport[dev] == SNDRV_AUTO_PORT) {
	snd_printk(KERN_ERR PFX "specify sbport\n");
	return -EINVAL;
	}
	}

	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
	sizeof(struct snd_cmi8330));
	if (card == NULL) {
	snd_printk(KERN_ERR PFX "could not get a new card\n");
	return -ENOMEM;
	}
	acard = (struct snd_cmi8330 *)card->private_data;
	acard->card = card;

	#ifdef CONFIG_PNP
	if (isapnp[dev]) {
	if ((err = snd_cmi8330_pnp(dev, acard, pcard, pid)) < 0) {
	snd_printk(KERN_ERR PFX "PnP detection failed\n");
	goto _err;
	}
	snd_card_set_dev(card, &pcard->card->dev);
	}
	#endif

	if ((err = snd_ad1848_create(card,
	wssport[dev] + 4,
	wssirq[dev],
	wssdma[dev],
	AD1848_HW_DETECT,
	&acard->wss)) < 0) {
	snd_printk(KERN_ERR PFX "(AD1848) device busy??\n");
	goto _err;
	}
	if (acard->wss->hardware != AD1848_HW_CMI8330) {
	snd_printk(KERN_ERR PFX "(AD1848) not found during probe\n");
	err = -ENODEV;
	goto _err;
	}

	if ((err = snd_sbdsp_create(card, sbport[dev],
	sbirq[dev],
	snd_sb16dsp_interrupt,
	sbdma8[dev],
	sbdma16[dev],
	SB_HW_AUTO, &acard->sb)) < 0) {
	snd_printk(KERN_ERR PFX "(SB16) device busy??\n");
	goto _err;
	}
	if (acard->sb->hardware != SB_HW_16) {
	snd_printk(KERN_ERR PFX "(SB16) not found during probe\n");
	goto _err;
	}

	snd_ad1848_out(acard->wss, AD1848_MISC_INFO, 0x40); /* switch on MODE2 */
	for (i = CMI8330_RMUX3D; i <= CMI8330_CDINGAIN; i++)
	snd_ad1848_out(acard->wss, i, snd_cmi8330_image[i - CMI8330_RMUX3D]);

	if ((err = snd_cmi8330_mixer(card, acard)) < 0) {
	snd_printk(KERN_ERR PFX "failed to create mixers\n");
	goto _err;
	}

	if ((err = snd_cmi8330_pcm(card, acard)) < 0) {
	snd_printk(KERN_ERR PFX "failed to create pcms\n");
	goto _err;
	}

	strcpy(card->driver, "CMI8330/C3D");
	strcpy(card->shortname, "C-Media CMI8330/C3D");
	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
	card->shortname,
	acard->wss->port,
	wssirq[dev],
	wssdma[dev]);

	if ((err = snd_card_set_generic_dev(card)) < 0)
	goto _err;

	if ((err = snd_card_register(card)) < 0)
	goto _err;

	if (pcard)
	pnp_set_card_drvdata(pcard, card);
	else
	snd_cmi8330_legacy[dev] = card;
	return 0;

	_err:
	snd_card_free(card);
	return err;
	}

	#ifdef CONFIG_PNP
	static int __devinit snd_cmi8330_pnp_detect(struct pnp_card_link *card,
	const struct pnp_card_device_id *id)
	{
	static int dev;
	int res;

	for ( ; dev < SNDRV_CARDS; dev++) {
	if (!enable[dev] \|\| !isapnp[dev])
	continue;
	res = snd_cmi8330_probe(dev, card, id);
	if (res < 0)
	return res;
	dev++;
	return 0;
	}
	return -ENODEV;
	}

	static void __devexit snd_cmi8330_pnp_remove(struct pnp_card_link * pcard)
	{
	struct snd_card card = (struct snd_card ) pnp_get_card_drvdata(pcard);

	snd_card_disconnect(card);
	snd_card_free_in_thread(card);
	}

	static struct pnp_card_driver cmi8330_pnpc_driver = {
	.flags = PNP_DRIVER_RES_DISABLE,
	.name = "cmi8330",
	.id_table = snd_cmi8330_pnpids,
	.probe = snd_cmi8330_pnp_detect,
	.remove = __devexit_p(snd_cmi8330_pnp_remove),
	};
	#endif /* CONFIG_PNP */

	static int __init alsa_card_cmi8330_init(void)
	{
	int dev, cards = 0;

	for (dev = 0; dev < SNDRV_CARDS; dev++) {
	if (!enable[dev])
	continue;
	if (is_isapnp_selected(dev))
	continue;
	if (snd_cmi8330_probe(dev, NULL, NULL) >= 0)
	cards++;
	}
	#ifdef CONFIG_PNP
	cards += pnp_register_card_driver(&cmi8330_pnpc_driver);
	#endif

	if (!cards) {
	#ifdef CONFIG_PNP
	pnp_unregister_card_driver(&cmi8330_pnpc_driver);
	#endif
	#ifdef MODULE
	snd_printk(KERN_ERR "CMI8330 not found or device busy\n");
	#endif
	return -ENODEV;
	}
	return 0;
	}

	static void __exit alsa_card_cmi8330_exit(void)
	{
	int i;

	#ifdef CONFIG_PNP
	/* PnP cards first */
	pnp_unregister_card_driver(&cmi8330_pnpc_driver);
	#endif
	for (i = 0; i < SNDRV_CARDS; i++)
	snd_card_free(snd_cmi8330_legacy[i]);
	}

	module_init(alsa_card_cmi8330_init)
	module_exit(alsa_card_cmi8330_exit)