bt87x.c

V4l driver for DVB HD

	snd_bt87x_writel(chip, REG_INT_MASK, chip->interrupt_mask);
	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
	spin_unlock(&chip->reg_lock);
	return 0;
}

static int snd_bt87x_stop(struct snd_bt87x *chip)
{
	spin_lock(&chip->reg_lock);
	chip->reg_control &= ~(CTL_FIFO_ENABLE | CTL_RISC_ENABLE | CTL_ACAP_EN);
	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
	snd_bt87x_writel(chip, REG_INT_MASK, 0);
	snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);
	spin_unlock(&chip->reg_lock);
	return 0;
}

static int snd_bt87x_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		return snd_bt87x_start(chip);
	case SNDRV_PCM_TRIGGER_STOP:
		return snd_bt87x_stop(chip);
	default:
		return -EINVAL;
	}
}

static snd_pcm_uframes_t snd_bt87x_pointer(struct snd_pcm_substream *substream)
{
	struct snd_bt87x *chip = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;

	return (snd_pcm_uframes_t)bytes_to_frames(runtime, chip->current_line * chip->line_bytes);
}

static struct snd_pcm_ops snd_bt87x_pcm_ops = {
	.open = snd_bt87x_pcm_open,
	.close = snd_bt87x_close,
	.ioctl = snd_pcm_lib_ioctl,
	.hw_params = snd_bt87x_hw_params,
	.hw_free = snd_bt87x_hw_free,
	.prepare = snd_bt87x_prepare,
	.trigger = snd_bt87x_trigger,
	.pointer = snd_bt87x_pointer,
	.page = snd_pcm_sgbuf_ops_page,
};

static int snd_bt87x_capture_volume_info(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_info *info)
{
	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	info->count = 1;
	info->value.integer.min = 0;
	info->value.integer.max = 15;
	return 0;
}

static int snd_bt87x_capture_volume_get(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_value *value)
{
	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);

	value->value.integer.value[0] = (chip->reg_control & CTL_A_GAIN_MASK) >> CTL_A_GAIN_SHIFT;
	return 0;
}

static int snd_bt87x_capture_volume_put(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_value *value)
{
	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
	u32 old_control;
	int changed;

	spin_lock_irq(&chip->reg_lock);
	old_control = chip->reg_control;
	chip->reg_control = (chip->reg_control & ~CTL_A_GAIN_MASK)
		| (value->value.integer.value[0] << CTL_A_GAIN_SHIFT);
	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
	changed = old_control != chip->reg_control;
	spin_unlock_irq(&chip->reg_lock);
	return changed;
}

static struct snd_kcontrol_new snd_bt87x_capture_volume = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Capture Volume",
	.info = snd_bt87x_capture_volume_info,
	.get = snd_bt87x_capture_volume_get,
	.put = snd_bt87x_capture_volume_put,
};

static int snd_bt87x_capture_boost_info(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_info *info)
{
	info->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	info->count = 1;
	info->value.integer.min = 0;
	info->value.integer.max = 1;
	return 0;
}

static int snd_bt87x_capture_boost_get(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *value)
{
	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);

	value->value.integer.value[0] = !! (chip->reg_control & CTL_A_G2X);
	return 0;
}

static int snd_bt87x_capture_boost_put(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *value)
{
	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
	u32 old_control;
	int changed;

	spin_lock_irq(&chip->reg_lock);
	old_control = chip->reg_control;
	chip->reg_control = (chip->reg_control & ~CTL_A_G2X)
		| (value->value.integer.value[0] ? CTL_A_G2X : 0);
	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
	changed = chip->reg_control != old_control;
	spin_unlock_irq(&chip->reg_lock);
	return changed;
}

static struct snd_kcontrol_new snd_bt87x_capture_boost = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Capture Boost",
	.info = snd_bt87x_capture_boost_info,
	.get = snd_bt87x_capture_boost_get,
	.put = snd_bt87x_capture_boost_put,
};

static int snd_bt87x_capture_source_info(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_info *info)
{
	static char *texts[3] = {"TV Tuner", "FM", "Mic/Line"};

	info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	info->count = 1;
	info->value.enumerated.items = 3;
	if (info->value.enumerated.item > 2)
		info->value.enumerated.item = 2;
	strcpy(info->value.enumerated.name, texts[info->value.enumerated.item]);
	return 0;
}

static int snd_bt87x_capture_source_get(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_value *value)
{
	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);

	value->value.enumerated.item[0] = (chip->reg_control & CTL_A_SEL_MASK) >> CTL_A_SEL_SHIFT;
	return 0;
}

static int snd_bt87x_capture_source_put(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_value *value)
{
	struct snd_bt87x *chip = snd_kcontrol_chip(kcontrol);
	u32 old_control;
	int changed;

	spin_lock_irq(&chip->reg_lock);
	old_control = chip->reg_control;
	chip->reg_control = (chip->reg_control & ~CTL_A_SEL_MASK)
		| (value->value.enumerated.item[0] << CTL_A_SEL_SHIFT);
	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
	changed = chip->reg_control != old_control;
	spin_unlock_irq(&chip->reg_lock);
	return changed;
}

static struct snd_kcontrol_new snd_bt87x_capture_source = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Capture Source",
	.info = snd_bt87x_capture_source_info,
	.get = snd_bt87x_capture_source_get,
	.put = snd_bt87x_capture_source_put,
};

static int snd_bt87x_free(struct snd_bt87x *chip)
{
	if (chip->mmio) {
		snd_bt87x_stop(chip);
		if (chip->irq >= 0)
			synchronize_irq(chip->irq);

		iounmap(chip->mmio);
	}
	if (chip->irq >= 0)
		free_irq(chip->irq, chip);
	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);
	kfree(chip);
	return 0;
}

static int snd_bt87x_dev_free(struct snd_device *device)
{
	struct snd_bt87x *chip = device->device_data;
	return snd_bt87x_free(chip);
}

static int __devinit snd_bt87x_pcm(struct snd_bt87x *chip, int device, char *name)
{
	int err;
	struct snd_pcm *pcm;

	err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
	if (err < 0)
		return err;
	pcm->private_data = chip;
	strcpy(pcm->name, name);
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_bt87x_pcm_ops);
	return snd_pcm_lib_preallocate_pages_for_all(pcm,
						     SNDRV_DMA_TYPE_DEV_SG,
						     snd_dma_pci_data(chip->pci),
							128 * 1024,
							(255 * 4092 + 1023) & ~1023);
}

static int __devinit snd_bt87x_create(struct snd_card *card,
				      struct pci_dev *pci,
				      struct snd_bt87x **rchip)
{
	struct snd_bt87x *chip;
	int err;
	static struct snd_device_ops ops = {
		.dev_free = snd_bt87x_dev_free
	};

	*rchip = NULL;

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

	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
	if (!chip) {
		pci_disable_device(pci);
		return -ENOMEM;
	}
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;
	spin_lock_init(&chip->reg_lock);

	if ((err = pci_request_regions(pci, "Bt87x audio")) < 0) {
		kfree(chip);
		pci_disable_device(pci);
		return err;
	}
	chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
				     pci_resource_len(pci, 0));
	if (!chip->mmio) {
		snd_bt87x_free(chip);
		snd_printk(KERN_ERR "cannot remap io memory\n");
		return -ENOMEM;
	}

	chip->reg_control = CTL_DA_ES2 | CTL_PKTP_16 | (15 << CTL_DA_SDR_SHIFT);
	chip->interrupt_mask = MY_INTERRUPTS;
	snd_bt87x_writel(chip, REG_GPIO_DMA_CTL, chip->reg_control);
	snd_bt87x_writel(chip, REG_INT_MASK, 0);
	snd_bt87x_writel(chip, REG_INT_STAT, MY_INTERRUPTS);

	if (request_irq(pci->irq, snd_bt87x_interrupt, SA_INTERRUPT | SA_SHIRQ,
			"Bt87x audio", chip)) {
		snd_bt87x_free(chip);
		snd_printk(KERN_ERR "cannot grab irq\n");
		return -EBUSY;
	}
	chip->irq = pci->irq;
	pci_set_master(pci);
	synchronize_irq(chip->irq);

	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
	if (err < 0) {
		snd_bt87x_free(chip);
		return err;
	}
	snd_card_set_dev(card, &pci->dev);
	*rchip = chip;
	return 0;
}

#define BT_DEVICE(chip, subvend, subdev, rate) \
	{ .vendor = PCI_VENDOR_ID_BROOKTREE, \
	  .device = chip, \
	  .subvendor = subvend, .subdevice = subdev, \
	  .driver_data = rate }

/* driver_data is the default digital_rate value for that device */
static struct pci_device_id snd_bt87x_ids[] = {
	/* Hauppauge WinTV series */
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0x13eb, 32000),
	/* Hauppauge WinTV series */
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, 0x0070, 0x13eb, 32000),
	/* Viewcast Osprey 200 */
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x0070, 0xff01, 44100),
	/* AVerMedia Studio No. 103, 203, ...? */
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x1461, 0x0003, 48000),
	/* Leadtek Winfast tv 2000xp delux */
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, 0x107d, 0x6606, 32000),
	{ }
};
MODULE_DEVICE_TABLE(pci, snd_bt87x_ids);

/* cards known not to have audio
 * (DVB cards use the audio function to transfer MPEG data) */
static struct {
	unsigned short subvendor, subdevice;
} blacklist[] __devinitdata = {
	{0x0071, 0x0101}, /* Nebula Electronics DigiTV */
	{0x11bd, 0x001c}, /* Pinnacle PCTV Sat */
	{0x11bd, 0x0026}, /* Pinnacle PCTV SAT CI */
	{0x1461, 0x0761}, /* AVermedia AverTV DVB-T */
	{0x1461, 0x0771}, /* AVermedia DVB-T 771 */
	{0x1822, 0x0001}, /* Twinhan VisionPlus DVB-T */
	{0x18ac, 0xd500}, /* DVICO FusionHDTV 5 Lite */
	{0x18ac, 0xdb10}, /* DVICO FusionHDTV DVB-T Lite */
	{0x270f, 0xfc00}, /* Chaintech Digitop DST-1000 DVB-S */
	{0x7063, 0x2000}, /* pcHDTV HD-2000 TV */
};

static struct pci_driver driver;

/* return the rate of the card, or a negative value if it's blacklisted */
static int __devinit snd_bt87x_detect_card(struct pci_dev *pci)
{
	int i;
	const struct pci_device_id *supported;

	supported = pci_match_device(&driver, pci);
	if (supported && supported->driver_data > 0)
		return supported->driver_data;

	for (i = 0; i < ARRAY_SIZE(blacklist); ++i)
		if (blacklist[i].subvendor == pci->subsystem_vendor &&
		    blacklist[i].subdevice == pci->subsystem_device) {
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,16)
			snd_printdd(KERN_INFO "card %#04x:%#04x has no audio\n",
				    pci->subsystem_vendor, pci->subsystem_device);
#else
			snd_printdd(KERN_INFO "card %#04x-%#04x:%#04x has no audio\n",
				    pci->device, pci->subsystem_vendor, pci->subsystem_device);
#endif
			return -EBUSY;
		}

#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,16)
	snd_printk(KERN_INFO "unknown card %#04x:%#04x, using default rate 32000\n",
		   pci->subsystem_vendor, pci->subsystem_device);
#else
	snd_printk(KERN_INFO "unknown card %#04x-%#04x:%#04x, using default rate 32000\n",
		   pci->device, pci->subsystem_vendor, pci->subsystem_device);
#endif
	snd_printk(KERN_DEBUG "please mail id, board name, and, "
		   "if it works, the correct digital_rate option to "
		   "<[e-mail]>\n");
	return 32000; /* default rate */
}

static int __devinit snd_bt87x_probe(struct pci_dev *pci,
				     const struct pci_device_id *pci_id)
{
	static int dev;
	struct snd_card *card;
	struct snd_bt87x *chip;
	int err, rate;

	rate = pci_id->driver_data;
	if (! rate)
		if ((rate = snd_bt87x_detect_card(pci)) <= 0)
			return -ENODEV;

	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)
		return -ENOMEM;

	err = snd_bt87x_create(card, pci, &chip);
	if (err < 0)
		goto _error;

	if (digital_rate[dev] > 0)
		chip->dig_rate = digital_rate[dev];
	else
		chip->dig_rate = rate;

	err = snd_bt87x_pcm(chip, DEVICE_DIGITAL, "Bt87x Digital");
	if (err < 0)
		goto _error;
	err = snd_bt87x_pcm(chip, DEVICE_ANALOG, "Bt87x Analog");
	if (err < 0)
		goto _error;

	err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_volume, chip));
	if (err < 0)
		goto _error;
	err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_boost, chip));
	if (err < 0)
		goto _error;
	err = snd_ctl_add(card, snd_ctl_new1(&snd_bt87x_capture_source, chip));
	if (err < 0)
		goto _error;

	strcpy(card->driver, "Bt87x");
	sprintf(card->shortname, "Brooktree Bt%x", pci->device);
	sprintf(card->longname, "%s at %#lx, irq %i",
		card->shortname, pci_resource_start(pci, 0), chip->irq);
	strcpy(card->mixername, "Bt87x");

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

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

_error:
	snd_card_free(card);
	return err;
}

static void __devexit snd_bt87x_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

/* default entries for all Bt87x cards - it's not exported */
/* driver_data is set to 0 to call detection */
static struct pci_device_id snd_bt87x_default_ids[] = {
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_878, PCI_ANY_ID, PCI_ANY_ID, 0),
	BT_DEVICE(PCI_DEVICE_ID_BROOKTREE_879, PCI_ANY_ID, PCI_ANY_ID, 0),
	{ }
};

static struct pci_driver driver = {
	.name = "Bt87x",
	.id_table = snd_bt87x_ids,
	.probe = snd_bt87x_probe,
	.remove = __devexit_p(snd_bt87x_remove),
};

static int __init alsa_card_bt87x_init(void)
{
	if (load_all)
		driver.id_table = snd_bt87x_default_ids;
	return pci_register_driver(&driver);
}

static void __exit alsa_card_bt87x_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_bt87x_init)
module_exit(alsa_card_bt87x_exit)