C++ (Cpp) pc8736x_superio_present Examples

Example #1

File: char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure_true-unreach-call.c Project: smackers/pthreadDriverBenchmarks

int __init pc8736x_gpio_init(void)
{
	int rc;
	dev_t devid;

	pdev = platform_device_alloc(DEVNAME, 0);
	if (!pdev)
		return -ENOMEM;

	rc = platform_device_add(pdev);
	if (rc) {
		rc = -ENODEV;
		goto undo_platform_dev_alloc;
	}
	dev_info(&pdev->dev, "NatSemi pc8736x GPIO Driver Initializing\n");

	if (!pc8736x_superio_present()) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "no device found\n");
		goto undo_platform_dev_add;
	}
	pc8736x_gpio_ops.dev = &pdev->dev;
        __VERIFIER_assert(pc8736x_gpio_ops.dev == &pdev->dev);

	/* Verify that chip and it's GPIO unit are both enabled.
	   My BIOS does this, so I take minimum action here
	 */
	rc = superio_inb(SIO_CF1);
	if (!(rc & 0x01)) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "device not enabled\n");
		goto undo_platform_dev_add;
	}
	device_select(SIO_GPIO_UNIT);
	if (!superio_inb(SIO_UNIT_ACT)) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "GPIO unit not enabled\n");
		goto undo_platform_dev_add;
	}

	/* read the GPIO unit base addr that chip responds to */
	pc8736x_gpio_base = (superio_inb(SIO_BASE_HADDR) << 8
			     | superio_inb(SIO_BASE_LADDR));

	if (!request_region(pc8736x_gpio_base, PC8736X_GPIO_RANGE, DEVNAME)) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "GPIO ioport %x busy\n",
			pc8736x_gpio_base);
		goto undo_platform_dev_add;
	}
	dev_info(&pdev->dev, "GPIO ioport %x reserved\n", pc8736x_gpio_base);

	if (major) {
		devid = MKDEV(major, 0);
		rc = register_chrdev_region(devid, PC8736X_GPIO_CT, DEVNAME);
	} else {
		rc = alloc_chrdev_region(&devid, 0, PC8736X_GPIO_CT, DEVNAME);
		major = MAJOR(devid);
	}

	if (rc < 0) {
		dev_err(&pdev->dev, "register-chrdev failed: %d\n", rc);
		goto undo_request_region;
	}
	if (!major) {
		major = rc;
		dev_dbg(&pdev->dev, "got dynamic major %d\n", major);
	}

	pc8736x_init_shadow();

	/* ignore minor errs, and succeed */
	cdev_init(&pc8736x_gpio_cdev, &pc8736x_gpio_fileops);
	cdev_add(&pc8736x_gpio_cdev, devid, PC8736X_GPIO_CT);

	return 0;

undo_request_region:
	release_region(pc8736x_gpio_base, PC8736X_GPIO_RANGE);
undo_platform_dev_add:
	platform_device_del(pdev);
undo_platform_dev_alloc:
	platform_device_put(pdev);

	return rc;
}

Example #2

static int __init pc8736x_gpio_init(void)
{
	int rc;
	dev_t devid;

	pdev = platform_device_alloc(DEVNAME, 0);
	if (!pdev)
		return -ENOMEM;

	rc = platform_device_add(pdev);
	if (rc) {
		rc = -ENODEV;
		goto undo_platform_dev_alloc;
	}
	dev_info(&pdev->dev, "NatSemi pc8736x GPIO Driver Initializing\n");

	if (!pc8736x_superio_present()) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "no device found\n");
		goto undo_platform_dev_add;
	}
	pc8736x_gpio_ops.dev = &pdev->dev;

	
	rc = superio_inb(SIO_CF1);
	if (!(rc & 0x01)) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "device not enabled\n");
		goto undo_platform_dev_add;
	}
	device_select(SIO_GPIO_UNIT);
	if (!superio_inb(SIO_UNIT_ACT)) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "GPIO unit not enabled\n");
		goto undo_platform_dev_add;
	}

	
	pc8736x_gpio_base = (superio_inb(SIO_BASE_HADDR) << 8
			     | superio_inb(SIO_BASE_LADDR));

	if (!request_region(pc8736x_gpio_base, PC8736X_GPIO_RANGE, DEVNAME)) {
		rc = -ENODEV;
		dev_err(&pdev->dev, "GPIO ioport %x busy\n",
			pc8736x_gpio_base);
		goto undo_platform_dev_add;
	}
	dev_info(&pdev->dev, "GPIO ioport %x reserved\n", pc8736x_gpio_base);

	if (major) {
		devid = MKDEV(major, 0);
		rc = register_chrdev_region(devid, PC8736X_GPIO_CT, DEVNAME);
	} else {
		rc = alloc_chrdev_region(&devid, 0, PC8736X_GPIO_CT, DEVNAME);
		major = MAJOR(devid);
	}

	if (rc < 0) {
		dev_err(&pdev->dev, "register-chrdev failed: %d\n", rc);
		goto undo_request_region;
	}
	if (!major) {
		major = rc;
		dev_dbg(&pdev->dev, "got dynamic major %d\n", major);
	}

	pc8736x_init_shadow();

	
	cdev_init(&pc8736x_gpio_cdev, &pc8736x_gpio_fileops);
	cdev_add(&pc8736x_gpio_cdev, devid, PC8736X_GPIO_CT);

	return 0;

undo_request_region:
	release_region(pc8736x_gpio_base, PC8736X_GPIO_RANGE);
undo_platform_dev_add:
	platform_device_del(pdev);
undo_platform_dev_alloc:
	platform_device_put(pdev);

	return rc;
}