static int mali_probe(struct platform_device *pdev)
{
int err;
MALI_DEBUG_PRINT(2, ("mali_probe(): Called for platform device %s\n", pdev->name));
if (NULL != mali_platform_device)
{
/* Already connected to a device, return error */
MALI_PRINT_ERROR(("mali_probe(): The Mali driver is already connected with a Mali device."));
return -EEXIST;
}
mali_platform_device = pdev;
if (mali_platform_init() != _MALI_OSK_ERR_OK)
{
/* Platform-specific initialization failed, return error */
MALI_PRINT_ERROR(("mali_probe(): mali_platform_init() failed."));
return -EFAULT;
}
if (_MALI_OSK_ERR_OK == _mali_osk_wq_init())
{
/* Initialize the Mali GPU HW specified by pdev */
if (_MALI_OSK_ERR_OK == mali_initialize_subsystems())
{
/* Register a misc device (so we are accessible from user space) */
err = mali_miscdevice_register(pdev);
if (0 == err)
{
/* Setup sysfs entries */
err = mali_sysfs_register(mali_dev_name);
if (0 == err)
{
MALI_DEBUG_PRINT(2, ("mali_probe(): Successfully initialized driver for platform device %s\n", pdev->name));
return 0;
}
else
{
MALI_PRINT_ERROR(("mali_probe(): failed to register sysfs entries"));
}
mali_miscdevice_unregister();
}
else
{
MALI_PRINT_ERROR(("mali_probe(): failed to register Mali misc device."));
}
mali_terminate_subsystems();
}
else
{
MALI_PRINT_ERROR(("mali_probe(): Failed to initialize Mali device driver."));
}
_mali_osk_wq_term();
}
mali_platform_device = NULL;
return -EFAULT;
}
/* called from _mali_osk_init */
int initialize_kernel_device(void)
{
int err;
dev_t dev = 0;
if (0 == mali_major)
{
/* auto select a major */
err = alloc_chrdev_region(&dev, 0/*first minor*/, 1/*count*/, mali_dev_name);
mali_major = MAJOR(dev);
}
else
{
/* use load time defined major number */
dev = MKDEV(mali_major, 0);
err = register_chrdev_region(dev, 1/*count*/, mali_dev_name);
}
if (err)
{
goto init_chrdev_err;
}
memset(&device, 0, sizeof(device));
/* initialize our char dev data */
cdev_init(&device.cdev, &mali_fops);
device.cdev.owner = THIS_MODULE;
device.cdev.ops = &mali_fops;
/* register char dev with the kernel */
err = cdev_add(&device.cdev, dev, 1/*count*/);
if (err)
{
goto init_cdev_err;
}
err = mali_sysfs_register(&device, dev, mali_dev_name);
if (err)
{
goto init_sysfs_err;
}
/* Success! */
return 0;
init_sysfs_err:
cdev_del(&device.cdev);
init_cdev_err:
unregister_chrdev_region(dev, 1/*count*/);
init_chrdev_err:
return err;
}
static int initialize_sysfs(void)
{
dev_t dev = MKDEV(mali_major, 0);
return mali_sysfs_register(&device, dev, mali_dev_name);
}
