azt3328.c

Linux Kernel 2.6.9 for OMAP1710

	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
				   &snd_azf3328_hw_constraints_rates);
	snd_azf3328_dbgcallleave();
	return 0;
}

static int snd_azf3328_capture_open(snd_pcm_substream_t * substream)
{
	azf3328_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;

	snd_azf3328_dbgcallenter();
	chip->capture_substream = substream;
	runtime->hw = snd_azf3328_capture;
	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
				   &snd_azf3328_hw_constraints_rates);
	snd_azf3328_dbgcallleave();
	return 0;
}

static int snd_azf3328_playback_close(snd_pcm_substream_t * substream)
{
	azf3328_t *chip = snd_pcm_substream_chip(substream);

	snd_azf3328_dbgcallenter();

	chip->playback_substream = NULL;
	snd_azf3328_dbgcallleave();
	return 0;
}

static int snd_azf3328_capture_close(snd_pcm_substream_t * substream)
{
	azf3328_t *chip = snd_pcm_substream_chip(substream);

	snd_azf3328_dbgcallenter();
	chip->capture_substream = NULL;
	snd_azf3328_dbgcallleave();
	return 0;
}

/******************************************************************/

static snd_pcm_ops_t snd_azf3328_playback_ops = {
	.open =		snd_azf3328_playback_open,
	.close =	snd_azf3328_playback_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_azf3328_hw_params,
	.hw_free =	snd_azf3328_hw_free,
	.prepare =	snd_azf3328_playback_prepare,
	.trigger =	snd_azf3328_playback_trigger,
	.pointer =	snd_azf3328_playback_pointer
};

static snd_pcm_ops_t snd_azf3328_capture_ops = {
	.open =		snd_azf3328_capture_open,
	.close =	snd_azf3328_capture_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	snd_azf3328_hw_params,
	.hw_free =	snd_azf3328_hw_free,
	.prepare =	snd_azf3328_capture_prepare,
	.trigger =	snd_azf3328_capture_trigger,
	.pointer =	snd_azf3328_capture_pointer
};

static void snd_azf3328_pcm_free(snd_pcm_t *pcm)
{
	azf3328_t *chip = pcm->private_data;
	chip->pcm = NULL;
	snd_pcm_lib_preallocate_free_for_all(pcm);
}

static int __devinit snd_azf3328_pcm(azf3328_t *chip, int device)
{
	snd_pcm_t *pcm;
	int err;

	snd_azf3328_dbgcallenter();
	if ((err = snd_pcm_new(chip->card, "AZF3328 DSP", device, 1, 1, &pcm)) < 0)
		return err;
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_azf3328_playback_ops);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_azf3328_capture_ops);

	pcm->private_data = chip;
	pcm->private_free = snd_azf3328_pcm_free;
	pcm->info_flags = 0;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcm = pcm;

	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
					      snd_dma_pci_data(chip->pci), 64*1024, 64*1024);

	snd_azf3328_dbgcallleave();
	return 0;
}

/******************************************************************/

static int snd_azf3328_free(azf3328_t *chip)
{
        if (chip->irq < 0)
                goto __end_hw;

	/* reset (close) mixer */
	snd_azf3328_mixer_set_mute(chip, IDX_MIXER_PLAY_MASTER, 1); /* first mute master volume */
	snd_azf3328_mixer_write(chip, IDX_MIXER_RESET, 0x0, WORD_VALUE);

        /* interrupt setup - mask everything */
	/* FIXME */

        synchronize_irq(chip->irq);
      __end_hw:
#ifdef SUPPORT_JOYSTICK
	if (chip->res_joystick) {
		gameport_unregister_port(&chip->gameport);
		/* disable gameport */
		snd_azf3328_io2_write(chip, IDX_IO2_LEGACY_ADDR,
				      snd_azf3328_io2_read(chip, IDX_IO2_LEGACY_ADDR) & ~LEGACY_JOY);
		release_resource(chip->res_joystick);
		kfree_nocheck(chip->res_joystick);
	}
#endif
        if (chip->irq >= 0)
		free_irq(chip->irq, (void *)chip);
	pci_release_regions(chip->pci);

        kfree(chip);
        return 0;
}

static int snd_azf3328_dev_free(snd_device_t *device)
{
	azf3328_t *chip = device->device_data;
	return snd_azf3328_free(chip);
}

#if 0
/* check whether a bit can be modified */
static void snd_azf3328_test_bit(unsigned int reg, int bit)
{
	unsigned char val, valoff, valon;

	val = inb(reg);

	outb(val & ~(1 << bit), reg);
	valoff = inb(reg);

	outb(val|(1 << bit), reg);
	valon = inb(reg);
	
	outb(val, reg);

	printk(KERN_ERR "reg %04x bit %d: %02x %02x %02x\n", reg, bit, val, valoff, valon);
}
#endif

static int __devinit snd_azf3328_create(snd_card_t * card,
                                         struct pci_dev *pci,
                                         unsigned long device_type,
                                         azf3328_t ** rchip)
{
	azf3328_t *chip;
	int err;
	static snd_device_ops_t ops = {
		.dev_free =     snd_azf3328_dev_free,
	};
	u16 tmp;

	*rchip = NULL;

	if ((err = pci_enable_device(pci)) < 0)
		return err;

	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
	if (chip == NULL)
		return -ENOMEM;
	spin_lock_init(&chip->reg_lock);
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;

	/* check if we can restrict PCI DMA transfers to 24 bits */
	if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
	    pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
		snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
		return -ENXIO;
	}

	if ((err = pci_request_regions(pci, "Aztech AZF3328")) < 0) {
		kfree(chip);
		return err;
	}

	chip->codec_port = pci_resource_start(pci, 0);
	chip->io2_port = pci_resource_start(pci, 1);
	chip->mpu_port = pci_resource_start(pci, 2);
	chip->synth_port = pci_resource_start(pci, 3);
	chip->mixer_port = pci_resource_start(pci, 4);

	if (request_irq(pci->irq, snd_azf3328_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
		snd_printk("unable to grab IRQ %d\n", pci->irq);
		snd_azf3328_free(chip);
		return -EBUSY;
	}
	chip->irq = pci->irq;
	pci_set_master(pci);
	synchronize_irq(chip->irq);

	snd_azf3328_dbgmisc("codec_port 0x%lx, io2_port 0x%lx, mpu_port 0x%lx, synth_port 0x%lx, mixer_port 0x%lx, irq %d\n", chip->codec_port, chip->io2_port, chip->mpu_port, chip->synth_port, chip->mixer_port, chip->irq);

	snd_azf3328_dbgmisc("io2 %02x %02x %02x %02x %02x %02x\n", snd_azf3328_io2_read(chip, 0), snd_azf3328_io2_read(chip, 1), snd_azf3328_io2_read(chip, 2), snd_azf3328_io2_read(chip, 3), snd_azf3328_io2_read(chip, 4), snd_azf3328_io2_read(chip, 5));

	for (tmp=0; tmp <= 0x01; tmp += 1)
		snd_azf3328_dbgmisc("0x%02x: opl 0x%04x, mpu300 0x%04x, mpu310 0x%04x, mpu320 0x%04x, mpu330 0x%04x\n", tmp, inb(0x388 + tmp), inb(0x300 + tmp), inb(0x310 + tmp), inb(0x320 + tmp), inb(0x330 + tmp));

	/* create mixer interface & switches */
	if ((err = snd_azf3328_mixer_new(chip)) < 0)
		return err;

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		snd_azf3328_free(chip);
		return err;
	}

#if 0
	/* set very low bitrate to reduce noise and power consumption? */
	snd_azf3328_setfmt(chip, IDX_IO_PLAY_SOUNDFORMAT, 5512, 8, 1);
#endif

	/* standard chip init stuff */
	spin_lock_irq(&chip->reg_lock);
	outb(DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE, chip->codec_port + IDX_IO_PLAY_FLAGS);
	outb(DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE, chip->codec_port + IDX_IO_SOMETHING_FLAGS);
	outb(DMA_PLAY_SOMETHING2|DMA_EPILOGUE_SOMETHING|DMA_SOMETHING_ELSE, chip->codec_port + IDX_IO_REC_FLAGS);
	outb(0x0, chip->codec_port + IDX_IO_IRQ63H);

	spin_unlock_irq(&chip->reg_lock);

	snd_card_set_dev(card, &pci->dev);

	*rchip = chip;
	return 0;
}

#ifdef SUPPORT_JOYSTICK
static void __devinit snd_azf3328_config_joystick(azf3328_t *chip, int joystick)
{
	unsigned char val;

	if (joystick == 1) {
		if ((chip->res_joystick = request_region(0x200, 8, "AZF3328 gameport")) != NULL)
			chip->gameport.io = 0x200;
	}

	val = inb(chip->io2_port + IDX_IO2_LEGACY_ADDR);
	if (chip->res_joystick)
		val |= LEGACY_JOY;
	else
		val &= ~LEGACY_JOY;

	outb(val, chip->io2_port + IDX_IO2_LEGACY_ADDR);
	if (chip->res_joystick)
		gameport_register_port(&chip->gameport);
}
#endif

static int __devinit snd_azf3328_probe(struct pci_dev *pci,
					  const struct pci_device_id *pci_id)
{
	static int dev;
	snd_card_t *card;
	azf3328_t *chip;
	opl3_t *opl3;
	int err;

	snd_azf3328_dbgcallenter();
	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;

	strcpy(card->driver, "AZF3328");
	strcpy(card->shortname, "Aztech AZF3328 (PCI168)");

        if ((err = snd_azf3328_create(card, pci, pci_id->driver_data, &chip)) < 0) {
		snd_card_free(card);
		return err;
	}

	if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_MPU401,
				        chip->mpu_port, 1, pci->irq, 0,
				        &chip->rmidi)) < 0) {
		snd_printk("azf3328: no MPU-401 device at 0x%lx?\n", chip->mpu_port);
		snd_card_free(card);
		return err;
	}

	if ((err = snd_azf3328_pcm(chip, 0)) < 0) {
		snd_card_free(card);
		return err;
	}

	if (snd_opl3_create(card, chip->synth_port, chip->synth_port+2,
			    OPL3_HW_AUTO, 1, &opl3) < 0) {
		snd_printk("azf3328: no OPL3 device at 0x%lx-0x%lx?\n",
			   chip->synth_port, chip->synth_port+2 );
	} else {
		if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
			snd_card_free(card);
			return err;
		}
	}

	snd_azf3328_dbgio(chip, "create");

	sprintf(card->longname, "%s at 0x%lx, irq %i",
		card->shortname, chip->codec_port, chip->irq);

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

#ifdef MODULE
	printk(
"azt3328: Experimental driver for Aztech AZF3328-based soundcards such as PCI168.\n"
"azt3328: ZERO support from Aztech: you might think hard about future purchase.\n"
"azt3328: Feel free to contact [e-mail] for bug reports etc.!\n");
#endif

#ifdef SUPPORT_JOYSTICK
	snd_azf3328_config_joystick(chip, joystick[dev]);
#endif

	pci_set_drvdata(pci, card);
	dev++;

	snd_azf3328_dbgcallleave();
	return 0;
}

static void __devexit snd_azf3328_remove(struct pci_dev *pci)
{
	snd_azf3328_dbgcallenter();
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
	snd_azf3328_dbgcallleave();
}

static struct pci_driver driver = {
	.name = "AZF3328",
	.id_table = snd_azf3328_ids,
	.probe = snd_azf3328_probe,
	.remove = __devexit_p(snd_azf3328_remove),
};

static int __init alsa_card_azf3328_init(void)
{
	int err;
	snd_azf3328_dbgcallenter();
	err = pci_module_init(&driver);
	snd_azf3328_dbgcallleave();
	return err;
}

static void __exit alsa_card_azf3328_exit(void)
{
	snd_azf3328_dbgcallenter();
	pci_unregister_driver(&driver);
	snd_azf3328_dbgcallleave();
}

module_init(alsa_card_azf3328_init)
module_exit(alsa_card_azf3328_exit)