linux/sound/isa/cmi8330.c

/*
 *  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/err.h>
#include <linux/platform_device.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.");

static struct platform_device *platform_devices[SNDRV_CARDS];
#ifdef CONFIG_PNP
static int pnp_registered;
#endif

#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];
};

#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[] __devinitdata = {
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[] __devinitdata = {
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] __devinitdata = {
	{ 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_PM
static int snd_cmi8330_suspend(struct snd_card *card)
{
	struct snd_cmi8330 *acard = card->private_data;

	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
	snd_pcm_suspend_all(acard->pcm);
	acard->wss->suspend(acard->wss);
	snd_sbmixer_suspend(acard->sb);
	return 0;
}

static int snd_cmi8330_resume(struct snd_card *card)
{
	struct snd_cmi8330 *acard = card->private_data;

	snd_sbdsp_reset(acard->sb);
	snd_sbmixer_suspend(acard->sb);
	acard->wss->resume(acard->wss);
	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
	return 0;
}
#endif


/*
 */

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

#define PFX	"cmi8330: "

static struct snd_card *snd_cmi8330_card_new(int dev)
{
	struct snd_card *card;
	struct snd_cmi8330 *acard;

	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 NULL;
	}
	acard = card->private_data;
	acard->card = card;
	return card;
}

static int __devinit snd_cmi8330_probe(struct snd_card *card, int dev)
{
	struct snd_cmi8330 *acard;
	int i, err;

	acard = card->private_data;
	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");
		return err;
	}
	if (acard->wss->hardware != AD1848_HW_CMI8330) {
		snd_printk(KERN_ERR PFX "(AD1848) not found during probe\n");
		return -ENODEV;
	}

	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");
		return err;
	}
	if (acard->sb->hardware != SB_HW_16) {
		snd_printk(KERN_ERR PFX "(SB16) not found during probe\n");
		return 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");
		return err;
	}

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

	return snd_card_register(card);
}

static int __devinit snd_cmi8330_nonpnp_probe(struct platform_device *pdev)
{
	struct snd_card *card;
	int err;
	int dev = pdev->id;

	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_cmi8330_card_new(dev);
	if (! card)
		return -ENOMEM;
	snd_card_set_dev(card, &pdev->dev);
	if ((err = snd_cmi8330_probe(card, dev)) < 0) {
		snd_card_free(card);
		return err;
	}
	platform_set_drvdata(pdev, card);
	return 0;
}

static int snd_cmi8330_nonpnp_remove(struct platform_device *devptr)
{
	snd_card_free(platform_get_drvdata(devptr));
	platform_set_drvdata(devptr, NULL);
	return 0;
}

#ifdef CONFIG_PM
static int snd_cmi8330_nonpnp_suspend(struct platform_device *dev, pm_message_t state)
{
	return snd_cmi8330_suspend(platform_get_drvdata(dev));
}

static int snd_cmi8330_nonpnp_resume(struct platform_device *dev)
{
	return snd_cmi8330_resume(platform_get_drvdata(dev));
}
#endif

#define CMI8330_DRIVER	"snd_cmi8330"

static struct platform_driver snd_cmi8330_driver = {
	.probe		= snd_cmi8330_nonpnp_probe,
	.remove		= snd_cmi8330_nonpnp_remove,
#ifdef CONFIG_PM
	.suspend	= snd_cmi8330_nonpnp_suspend,
	.resume		= snd_cmi8330_nonpnp_resume,
#endif
	.driver		= {
		.name	= CMI8330_DRIVER
	},
};


#ifdef CONFIG_PNP
static unsigned int __devinitdata cmi8330_pnp_devices;

static int __devinit snd_cmi8330_pnp_detect(struct pnp_card_link *pcard,
					    const struct pnp_card_device_id *pid)
{
	static int dev;
	struct snd_card *card;
	int res;

	for ( ; dev < SNDRV_CARDS; dev++) {
		if (enable[dev] && isapnp[dev])
			break;
	}
	if (dev >= SNDRV_CARDS)
		return -ENODEV;
			       
	card = snd_cmi8330_card_new(dev);
	if (! card)
		return -ENOMEM;
	if ((res = snd_cmi8330_pnp(dev, card->private_data, pcard, pid)) < 0) {
		snd_printk(KERN_ERR PFX "PnP detection failed\n");
		snd_card_free(card);
		return res;
	}
	snd_card_set_dev(card, &pcard->card->dev);
	if ((res = snd_cmi8330_probe(card, dev)) < 0) {
		snd_card_free(card);
		return res;
	}
	pnp_set_card_drvdata(pcard, card);
	dev++;
	cmi8330_pnp_devices++;
	return 0;
}

static void __devexit snd_cmi8330_pnp_remove(struct pnp_card_link * pcard)
{
	snd_card_free(pnp_get_card_drvdata(pcard));
	pnp_set_card_drvdata(pcard, NULL);
}

#ifdef CONFIG_PM
static int snd_cmi8330_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
	return snd_cmi8330_suspend(pnp_get_card_drvdata(pcard));
}

static int snd_cmi8330_pnp_resume(struct pnp_card_link *pcard)
{
	return snd_cmi8330_resume(pnp_get_card_drvdata(pcard));
}
#endif

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),
#ifdef CONFIG_PM
	.suspend	= snd_cmi8330_pnp_suspend,
	.resume		= snd_cmi8330_pnp_resume,
#endif
};
#endif /* CONFIG_PNP */

static void __init_or_module snd_cmi8330_unregister_all(void)
{
	int i;

#ifdef CONFIG_PNP
	if (pnp_registered)
		pnp_unregister_card_driver(&cmi8330_pnpc_driver);
#endif
	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
		platform_device_unregister(platform_devices[i]);
	platform_driver_unregister(&snd_cmi8330_driver);
}

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

	if ((err = platform_driver_register(&snd_cmi8330_driver)) < 0)
		return err;

	for (i = 0; i < SNDRV_CARDS; i++) {
		struct platform_device *device;
		if (! enable[i] || is_isapnp_selected(i))
			continue;
		device = platform_device_register_simple(CMI8330_DRIVER,
							 i, NULL, 0);
		if (IS_ERR(device))
			continue;
		platform_devices[i] = device;
		cards++;
	}

#ifdef CONFIG_PNP
	err = pnp_register_card_driver(&cmi8330_pnpc_driver);
	if (!err) {
		pnp_registered = 1;
		cards += cmi8330_pnp_devices;
	}
#endif

	if (!cards) {
#ifdef MODULE
		snd_printk(KERN_ERR "CMI8330 not found or device busy\n");
#endif
		snd_cmi8330_unregister_all();
		return -ENODEV;
	}
	return 0;
}

static void __exit alsa_card_cmi8330_exit(void)
{
	snd_cmi8330_unregister_all();
}

module_init(alsa_card_cmi8330_init)
module_exit(alsa_card_cmi8330_exit)