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Commit e2aff448 authored by Laura Abbott's avatar Laura Abbott Committed by Daniel Vetter
Browse files

drm/vgem: Add a dummy platform device 



The vgem driver is currently registered independent of any actual
device. Some usage of the dmabuf APIs require an actual device structure
to do anything. Register a dummy platform device for use with dmabuf.

Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarLaura Abbott <labbott@redhat.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1493923548-20878-2-git-send-email-labbott@redhat.com
parent f424f55e

drivers/gpu/drm/vgem/vgem_drv.c

+16 −3
Original line number Diff line number Diff line
@@ -42,6 +42,8 @@ 
#define DRIVER_MAJOR	1

#define DRIVER_MINOR	0



static struct platform_device *vgem_platform;



static void vgem_gem_free_object(struct drm_gem_object *obj)

{

	struct drm_vgem_gem_object *vgem_obj = to_vgem_bo(obj);
@@ -335,11 +337,20 @@ static int __init vgem_init(void) 
	int ret;



	vgem_device = drm_dev_alloc(&vgem_driver, NULL);

	if (IS_ERR(vgem_device)) {

		ret = PTR_ERR(vgem_device);

	if (IS_ERR(vgem_device))

		return PTR_ERR(vgem_device);



	vgem_platform = platform_device_register_simple("vgem",

					-1, NULL, 0);



	if (!vgem_platform) {

		ret = -ENODEV;

		goto out;

	}



	dma_coerce_mask_and_coherent(&vgem_platform->dev,

					DMA_BIT_MASK(64));



	ret  = drm_dev_register(vgem_device, 0);

	if (ret)

		goto out_unref;
@@ -347,13 +358,15 @@ static int __init vgem_init(void) 
	return 0;



out_unref:

	drm_dev_unref(vgem_device);

	platform_device_unregister(vgem_platform);

out:

	drm_dev_unref(vgem_device);

	return ret;

}



static void __exit vgem_exit(void)

{

	platform_device_unregister(vgem_platform);

	drm_dev_unregister(vgem_device);

	drm_dev_unref(vgem_device);

}