C++ (Cpp) snd_ad1889_init Exemples

Exemple #1

Fichier : ad1889.c Projet : 3sOx/asuswrt-merlin

static int __devinit
snd_ad1889_create(struct snd_card *card,
		  struct pci_dev *pci,
		  struct snd_ad1889 **rchip)
{
	int err;

	struct snd_ad1889 *chip;
	static struct snd_device_ops ops = {
		.dev_free = snd_ad1889_dev_free,
	};

	*rchip = NULL;

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

	/* check PCI availability (32bit DMA) */
	if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 ||
	    pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
		printk(KERN_ERR PFX "error setting 32-bit DMA mask.\n");
		pci_disable_device(pci);
		return -ENXIO;
	}

	/* allocate chip specific data with zero-filled memory */
	if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
		pci_disable_device(pci);
		return -ENOMEM;
	}

	chip->card = card;
	card->private_data = chip;
	chip->pci = pci;
	chip->irq = -1;

	/* (1) PCI resource allocation */
	if ((err = pci_request_regions(pci, card->driver)) < 0)
		goto free_and_ret;

	chip->bar = pci_resource_start(pci, 0);
	chip->iobase = ioremap_nocache(chip->bar, pci_resource_len(pci, 0));
	if (chip->iobase == NULL) {
		printk(KERN_ERR PFX "unable to reserve region.\n");
		err = -EBUSY;
		goto free_and_ret;
	}
	
	pci_set_master(pci);

	spin_lock_init(&chip->lock);	/* only now can we call ad1889_free */

	if (request_irq(pci->irq, snd_ad1889_interrupt,
			IRQF_SHARED, card->driver, chip)) {
		printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq);
		snd_ad1889_free(chip);
		return -EBUSY;
	}

	chip->irq = pci->irq;
	synchronize_irq(chip->irq);

	/* (2) initialization of the chip hardware */
	if ((err = snd_ad1889_init(chip)) < 0) {
		snd_ad1889_free(chip);
		return err;
	}

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		snd_ad1889_free(chip);
		return err;
	}

	snd_card_set_dev(card, &pci->dev);

	*rchip = chip;

	return 0;

free_and_ret:
	kfree(chip);
	pci_disable_device(pci);

	return err;
}

Exemple #2

Fichier : ad1889.c Projet : MiniBlu/cm11_kernel_htc_msm8974a3ul

static int __devinit
snd_ad1889_create(struct snd_card *card,
		  struct pci_dev *pci,
		  struct snd_ad1889 **rchip)
{
	int err;

	struct snd_ad1889 *chip;
	static struct snd_device_ops ops = {
		.dev_free = snd_ad1889_dev_free,
	};

	*rchip = NULL;

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

	
	if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
	    pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
		printk(KERN_ERR PFX "error setting 32-bit DMA mask.\n");
		pci_disable_device(pci);
		return -ENXIO;
	}

	
	if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
		pci_disable_device(pci);
		return -ENOMEM;
	}

	chip->card = card;
	card->private_data = chip;
	chip->pci = pci;
	chip->irq = -1;

	
	if ((err = pci_request_regions(pci, card->driver)) < 0)
		goto free_and_ret;

	chip->bar = pci_resource_start(pci, 0);
	chip->iobase = pci_ioremap_bar(pci, 0);
	if (chip->iobase == NULL) {
		printk(KERN_ERR PFX "unable to reserve region.\n");
		err = -EBUSY;
		goto free_and_ret;
	}
	
	pci_set_master(pci);

	spin_lock_init(&chip->lock);	

	if (request_irq(pci->irq, snd_ad1889_interrupt,
			IRQF_SHARED, KBUILD_MODNAME, chip)) {
		printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq);
		snd_ad1889_free(chip);
		return -EBUSY;
	}

	chip->irq = pci->irq;
	synchronize_irq(chip->irq);

	
	if ((err = snd_ad1889_init(chip)) < 0) {
		snd_ad1889_free(chip);
		return err;
	}

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		snd_ad1889_free(chip);
		return err;
	}

	snd_card_set_dev(card, &pci->dev);

	*rchip = chip;

	return 0;

free_and_ret:
	kfree(chip);
	pci_disable_device(pci);

	return err;
}