ca0106_main.c

h内核

static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id,
					  struct pt_regs *regs)
{
	unsigned int status;

	ca0106_t *chip = dev_id;
	int i;
	int mask;
        unsigned int stat76;
	ca0106_channel_t *pchannel;

	spin_lock(&chip->emu_lock);

	status = inl(chip->port + IPR);

	// call updater, unlock before it
	spin_unlock(&chip->emu_lock);
  
	if (! status)
		return IRQ_NONE;

        stat76 = snd_ca0106_ptr_read(chip, EXTENDED_INT, 0);
	//snd_printk("interrupt status = 0x%08x, stat76=0x%08x\n", status, stat76);
	//snd_printk("ptr=0x%08x\n",snd_ca0106_ptr_read(chip, PLAYBACK_POINTER, 0));
        mask = 0x11; /* 0x1 for one half, 0x10 for the other half period. */
	for(i = 0; i < 4; i++) {
		pchannel = &(chip->playback_channels[i]);
		if(stat76 & mask) {
/* FIXME: Select the correct substream for period elapsed */
			if(pchannel->use) {
                          snd_pcm_period_elapsed(pchannel->epcm->substream);
	                //printk(KERN_INFO "interrupt [%d] used\n", i);
                        }
		}
	        //printk(KERN_INFO "channel=%p\n",pchannel);
	        //printk(KERN_INFO "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
		mask <<= 1;
	}
        mask = 0x110000; /* 0x1 for one half, 0x10 for the other half period. */
	for(i = 0; i < 4; i++) {
		pchannel = &(chip->capture_channels[i]);
		if(stat76 & mask) {
/* FIXME: Select the correct substream for period elapsed */
			if(pchannel->use) {
                          snd_pcm_period_elapsed(pchannel->epcm->substream);
	                //printk(KERN_INFO "interrupt [%d] used\n", i);
                        }
		}
	        //printk(KERN_INFO "channel=%p\n",pchannel);
	        //printk(KERN_INFO "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
		mask <<= 1;
	}

        snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
	spin_lock(&chip->emu_lock);
	// acknowledge the interrupt if necessary
	outl(status, chip->port+IPR);

	spin_unlock(&chip->emu_lock);

	return IRQ_HANDLED;
}

static void snd_ca0106_pcm_free(snd_pcm_t *pcm)
{
	ca0106_t *emu = pcm->private_data;
	emu->pcm = NULL;
	snd_pcm_lib_preallocate_free_for_all(pcm);
}

static int __devinit snd_ca0106_pcm(ca0106_t *emu, int device, snd_pcm_t **rpcm)
{
	snd_pcm_t *pcm;
	snd_pcm_substream_t *substream;
	int err;
  
	if (rpcm)
		*rpcm = NULL;
	if ((err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm)) < 0)
		return err;
  
	pcm->private_data = emu;
	pcm->private_free = snd_ca0106_pcm_free;

	switch (device) {
	case 0:
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
          break;
	case 1:
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
          break;
	case 2:
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
          break;
	case 3:
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
          break;
        }

	pcm->info_flags = 0;
	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
	strcpy(pcm->name, "CA0106");
	emu->pcm = pcm;

	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
	    substream; 
	    substream = substream->next) {
		if ((err = snd_pcm_lib_preallocate_pages(substream, 
							 SNDRV_DMA_TYPE_DEV, 
							 snd_dma_pci_data(emu->pci), 
							 64*1024, 64*1024)) < 0) /* FIXME: 32*1024 for sound buffer, between 32and64 for Periods table. */
			return err;
	}

	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
	      substream; 
	      substream = substream->next) {
 		if ((err = snd_pcm_lib_preallocate_pages(substream, 
	                                           SNDRV_DMA_TYPE_DEV, 
	                                           snd_dma_pci_data(emu->pci), 
	                                           64*1024, 64*1024)) < 0)
			return err;
	}
  
	if (rpcm)
		*rpcm = pcm;
  
	return 0;
}

static int __devinit snd_ca0106_create(snd_card_t *card,
					 struct pci_dev *pci,
					 ca0106_t **rchip)
{
	ca0106_t *chip;
	int err;
	int ch;
	static snd_device_ops_t ops = {
		.dev_free = snd_ca0106_dev_free,
	};
  
	*rchip = NULL;
  
	if ((err = pci_enable_device(pci)) < 0)
		return err;
	if (pci_set_dma_mask(pci, 0xffffffffUL) < 0 ||
	    pci_set_consistent_dma_mask(pci, 0xffffffffUL) < 0) {
		printk(KERN_ERR "error to set 32bit mask DMA\n");
		pci_disable_device(pci);
		return -ENXIO;
	}
  
	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
	if (chip == NULL) {
		pci_disable_device(pci);
		return -ENOMEM;
	}
  
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;

	spin_lock_init(&chip->emu_lock);
  
	chip->port = pci_resource_start(pci, 0);
	if ((chip->res_port = request_region(chip->port, 0x20,
					     "snd_ca0106")) == NULL) { 
		snd_ca0106_free(chip);
		printk(KERN_ERR "cannot allocate the port\n");
		return -EBUSY;
	}

	if (request_irq(pci->irq, snd_ca0106_interrupt,
			SA_INTERRUPT|SA_SHIRQ, "snd_ca0106",
			(void *)chip)) {
		snd_ca0106_free(chip);
		printk(KERN_ERR "cannot grab irq\n");
		return -EBUSY;
	}
	chip->irq = pci->irq;
  
 	/* This stores the periods table. */ 
	if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci), 1024, &chip->buffer) < 0) {
		snd_ca0106_free(chip);
		return -ENOMEM;
	}

	pci_set_master(pci);
	/* read revision & serial */
	pci_read_config_byte(pci, PCI_REVISION_ID, (char *)&chip->revision);
	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
#if 1
	printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
	       chip->revision, chip->serial);
#endif

	outl(0, chip->port + INTE);

	/*
	 *  Init to 0x02109204 :
	 *  Clock accuracy    = 0     (1000ppm)
	 *  Sample Rate       = 2     (48kHz)
	 *  Audio Channel     = 1     (Left of 2)
	 *  Source Number     = 0     (Unspecified)
	 *  Generation Status = 1     (Original for Cat Code 12)
	 *  Cat Code          = 12    (Digital Signal Mixer)
	 *  Mode              = 0     (Mode 0)
	 *  Emphasis          = 0     (None)
	 *  CP                = 1     (Copyright unasserted)
	 *  AN                = 0     (Audio data)
	 *  P                 = 0     (Consumer)
	 */
	snd_ca0106_ptr_write(chip, SPCS0, 0,
				chip->spdif_bits[0] =
				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
				SPCS_GENERATIONSTATUS | 0x00001200 |
				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
	/* Only SPCS1 has been tested */
	snd_ca0106_ptr_write(chip, SPCS1, 0,
				chip->spdif_bits[1] =
				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
				SPCS_GENERATIONSTATUS | 0x00001200 |
				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
	snd_ca0106_ptr_write(chip, SPCS2, 0,
				chip->spdif_bits[2] =
				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
				SPCS_GENERATIONSTATUS | 0x00001200 |
				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
	snd_ca0106_ptr_write(chip, SPCS3, 0,
				chip->spdif_bits[3] =
				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
				SPCS_GENERATIONSTATUS | 0x00001200 |
				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);

        snd_ca0106_ptr_write(chip, PLAYBACK_MUTE, 0, 0x00fc0000);
        snd_ca0106_ptr_write(chip, CAPTURE_MUTE, 0, 0x00fc0000);

        /* Write 0x8000 to AC97_REC_GAIN to mute it. */
        outb(AC97_REC_GAIN, chip->port + AC97ADDRESS);
        outw(0x8000, chip->port + AC97DATA);
#if 0
	snd_ca0106_ptr_write(chip, SPCS0, 0, 0x2108006);
	snd_ca0106_ptr_write(chip, 0x42, 0, 0x2108006);
	snd_ca0106_ptr_write(chip, 0x43, 0, 0x2108006);
	snd_ca0106_ptr_write(chip, 0x44, 0, 0x2108006);
#endif

	//snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0xf0f003f); /* OSS drivers set this. */
	/* Analog or Digital output */
	snd_ca0106_ptr_write(chip, SPDIF_SELECT1, 0, 0xf);
	snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000b0000); /* 0x0b000000 for digital, 0x000b0000 for analog, from win2000 drivers */
	chip->spdif_enable = 0; /* Set digital SPDIF output off */
	chip->capture_source = 3; /* Set CAPTURE_SOURCE */
	//snd_ca0106_ptr_write(chip, 0x45, 0, 0); /* Analogue out */
	//snd_ca0106_ptr_write(chip, 0x45, 0, 0xf00); /* Digital out */

	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 0, 0x40c81000); /* goes to 0x40c80000 when doing SPDIF IN/OUT */
	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 1, 0xffffffff); /* (Mute) CAPTURE feedback into PLAYBACK volume. Only lower 16 bits matter. */
	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 2, 0x30300000); /* SPDIF IN Volume */
	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 3, 0x00700000); /* SPDIF IN Volume, 0x70 = (vol & 0x3f) | 0x40 */
	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING1, 0, 0x32765410);
	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING2, 0, 0x76767676);
	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING1, 0, 0x32765410);
	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING2, 0, 0x76767676);
	for(ch = 0; ch < 4; ch++) {
		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME1, ch, 0x30303030); /* Only high 16 bits matter */
		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME2, ch, 0x30303030);
		//snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0x40404040); /* Mute */
		//snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0x40404040); /* Mute */
		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0xffffffff); /* Mute */
		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0xffffffff); /* Mute */
	}
        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC, Line in, TAD in, AUX in */
	chip->capture_source = 3; /* Set CAPTURE_SOURCE */

        if ((chip->serial == 0x10061102) || (chip->serial == 0x10071102) ) { /* The SB0410 and SB0413 use GPIO differently. */
		/* FIXME: Still need to find out what the other GPIO bits do. E.g. For digital spdif out. */
		outl(0x0, chip->port+GPIO);
		//outl(0x00f0e000, chip->port+GPIO); /* Analog */
		outl(0x005f4300, chip->port+GPIO); /* Analog */
	} else {
		outl(0x0, chip->port+GPIO);
		outl(0x005f03a3, chip->port+GPIO); /* Analog */
		//outl(0x005f02a2, chip->port+GPIO);   /* SPDIF */
	}
	snd_ca0106_intr_enable(chip, 0x105); /* Win2000 uses 0x1e0 */

	//outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
	//outl(0x00001409, chip->port+HCFG); /* 0x1000 causes AC3 to fails. Maybe it effects 24 bit output. */
	//outl(0x00000009, chip->port+HCFG);
	outl(HCFG_AC97 | HCFG_AUDIOENABLE, chip->port+HCFG); /* AC97 2.0, Enable outputs. */

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
				  chip, &ops)) < 0) {
		snd_ca0106_free(chip);
		return err;
	}
	*rchip = chip;
	return 0;
}

static int __devinit snd_ca0106_probe(struct pci_dev *pci,
					const struct pci_device_id *pci_id)
{
	static int dev;
	snd_card_t *card;
	ca0106_t *chip;
	ca0106_names_t *c;
	int err;

	if (dev >= SNDRV_CARDS)
		return -ENODEV;
	if (!enable[dev]) {
		dev++;
		return -ENOENT;
	}

	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
		return -ENOMEM;

	if ((err = snd_ca0106_create(card, pci, &chip)) < 0) {
		snd_card_free(card);
		return err;
	}

	if ((err = snd_ca0106_pcm(chip, 0, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_ca0106_pcm(chip, 1, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_ca0106_pcm(chip, 2, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_ca0106_pcm(chip, 3, NULL)) < 0) {
		snd_card_free(card);
		return err;
	}
        if ((chip->serial != 0x10061102) && (chip->serial != 0x10071102) ) { /* The SB0410 and SB0413 do not have an ac97 chip. */
		if ((err = snd_ca0106_ac97(chip)) < 0) {
			snd_card_free(card);
			return err;
		}
	}
	if ((err = snd_ca0106_mixer(chip)) < 0) {
		snd_card_free(card);
		return err;
	}

	snd_ca0106_proc_init(chip);

	strcpy(card->driver, "CA0106");
	strcpy(card->shortname, "CA0106");

	for (c=ca0106_chip_names; c->serial; c++) {
		if (c->serial == chip->serial) break;
	}
	sprintf(card->longname, "%s at 0x%lx irq %i",
		c->name, chip->port, chip->irq);

	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}

	pci_set_drvdata(pci, card);
	dev++;
	return 0;
}

static void __devexit snd_ca0106_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

// PCI IDs
static struct pci_device_id snd_ca0106_ids[] = {
	{ 0x1102, 0x0007, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },	/* Audigy LS or Live 24bit */
	{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_ca0106_ids);

// pci_driver definition
static struct pci_driver driver = {
	.name = "CA0106",
	.id_table = snd_ca0106_ids,
	.probe = snd_ca0106_probe,
	.remove = __devexit_p(snd_ca0106_remove),
};

// initialization of the module
static int __init alsa_card_ca0106_init(void)
{
	int err;

	if ((err = pci_module_init(&driver)) > 0)
		return err;

	return 0;
}

// clean up the module
static void __exit alsa_card_ca0106_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_ca0106_init)
module_exit(alsa_card_ca0106_exit)