static struct udl_device *udl_driver_create(struct usb_interface *interface)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct udl_device *udl;
int r;
udl = kzalloc(sizeof(*udl), GFP_KERNEL);
if (!udl)
return ERR_PTR(-ENOMEM);
r = drm_dev_init(&udl->drm, &driver, &interface->dev);
if (r) {
kfree(udl);
return ERR_PTR(r);
}
udl->udev = udev;
udl->drm.dev_private = udl;
r = udl_init(udl);
if (r) {
drm_dev_fini(&udl->drm);
kfree(udl);
return ERR_PTR(r);
}
usb_set_intfdata(interface, udl);
return udl;
}
struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
{
struct komeda_kms_dev *kms = kzalloc(sizeof(*kms), GFP_KERNEL);
struct drm_device *drm;
int err;
if (!kms)
return ERR_PTR(-ENOMEM);
drm = &kms->base;
err = drm_dev_init(drm, &komeda_kms_driver, mdev->dev);
if (err)
goto free_kms;
drm->dev_private = mdev;
komeda_kms_mode_config_init(kms, mdev);
err = komeda_kms_add_private_objs(kms, mdev);
if (err)
goto cleanup_mode_config;
err = komeda_kms_add_planes(kms, mdev);
if (err)
goto cleanup_mode_config;
err = drm_vblank_init(drm, kms->n_crtcs);
if (err)
goto cleanup_mode_config;
err = komeda_kms_add_crtcs(kms, mdev);
if (err)
goto cleanup_mode_config;
err = component_bind_all(mdev->dev, kms);
if (err)
goto cleanup_mode_config;
drm_mode_config_reset(drm);
err = drm_dev_register(drm, 0);
if (err)
goto cleanup_mode_config;
return kms;
cleanup_mode_config:
drm_mode_config_cleanup(drm);
free_kms:
kfree(kms);
return ERR_PTR(err);
}
/**
* drm_dev_alloc - Allocate new DRM device
* @driver: DRM driver to allocate device for
* @parent: Parent device object
*
* Allocate and initialize a new DRM device. No device registration is done.
* Call drm_dev_register() to advertice the device to user space and register it
* with other core subsystems. This should be done last in the device
* initialization sequence to make sure userspace can't access an inconsistent
* state.
*
* The initial ref-count of the object is 1. Use drm_dev_ref() and
* drm_dev_unref() to take and drop further ref-counts.
*
* Note that for purely virtual devices @parent can be NULL.
*
* Drivers that wish to subclass or embed struct &drm_device into their
* own struct should look at using drm_dev_init() instead.
*
* RETURNS:
* Pointer to new DRM device, or NULL if out of memory.
*/
struct drm_device *drm_dev_alloc(struct drm_driver *driver,
struct device *parent)
{
struct drm_device *dev;
int ret;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
ret = drm_dev_init(dev, driver, parent);
if (ret) {
kfree(dev);
return NULL;
}
return dev;
}
static int __init vgem_init(void)
{
int ret;
vgem_device = kzalloc(sizeof(*vgem_device), GFP_KERNEL);
if (!vgem_device)
return -ENOMEM;
vgem_device->platform =
platform_device_register_simple("vgem", -1, NULL, 0);
if (IS_ERR(vgem_device->platform)) {
ret = PTR_ERR(vgem_device->platform);
goto out_free;
}
dma_coerce_mask_and_coherent(&vgem_device->platform->dev,
DMA_BIT_MASK(64));
ret = drm_dev_init(&vgem_device->drm, &vgem_driver,
&vgem_device->platform->dev);
if (ret)
goto out_unregister;
/* Final step: expose the device/driver to userspace */
ret = drm_dev_register(&vgem_device->drm, 0);
if (ret)
goto out_fini;
return 0;
out_fini:
drm_dev_fini(&vgem_device->drm);
out_unregister:
platform_device_unregister(vgem_device->platform);
out_free:
kfree(vgem_device);
return ret;
}
static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct vbox_private *vbox;
int ret = 0;
if (!vbox_check_supported(VBE_DISPI_ID_HGSMI))
return -ENODEV;
vbox = kzalloc(sizeof(*vbox), GFP_KERNEL);
if (!vbox)
return -ENOMEM;
ret = drm_dev_init(&vbox->ddev, &driver, &pdev->dev);
if (ret) {
kfree(vbox);
return ret;
}
vbox->ddev.pdev = pdev;
vbox->ddev.dev_private = vbox;
pci_set_drvdata(pdev, vbox);
mutex_init(&vbox->hw_mutex);
ret = pci_enable_device(pdev);
if (ret)
goto err_dev_put;
ret = vbox_hw_init(vbox);
if (ret)
goto err_pci_disable;
ret = vbox_mm_init(vbox);
if (ret)
goto err_hw_fini;
ret = vbox_mode_init(vbox);
if (ret)
goto err_mm_fini;
ret = vbox_irq_init(vbox);
if (ret)
goto err_mode_fini;
ret = drm_fb_helper_fbdev_setup(&vbox->ddev, &vbox->fb_helper,
&vbox_fb_helper_funcs, 32,
vbox->num_crtcs);
if (ret)
goto err_irq_fini;
ret = drm_dev_register(&vbox->ddev, 0);
if (ret)
goto err_fbdev_fini;
return 0;
err_fbdev_fini:
vbox_fbdev_fini(vbox);
err_irq_fini:
vbox_irq_fini(vbox);
err_mode_fini:
vbox_mode_fini(vbox);
err_mm_fini:
vbox_mm_fini(vbox);
err_hw_fini:
vbox_hw_fini(vbox);
err_pci_disable:
pci_disable_device(pdev);
err_dev_put:
drm_dev_put(&vbox->ddev);
return ret;
}
