With Laura's introduction of the fake platform device for importing
dmabuf, we add a second static that is logically tied to the vgem_device.
Convert vgem over to using the struct drm_device subclassing, so that
the platform device is stored inside its owner.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Laura Abbott <labbott@xxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
---
drivers/gpu/drm/vgem/vgem_drv.c | 63 +++++++++++++++++++++++++++--------------
1 file changed, 41 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index c9381d457a03..4b23ba049632 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -42,7 +42,10 @@
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
-static struct platform_device *vgem_platform;
+static struct vgem_device {
+ struct drm_device drm;
+ struct platform_device *platform;
+} *vgem_device;
static void vgem_gem_free_object(struct drm_gem_object *obj)
{
@@ -307,7 +310,9 @@ static struct sg_table *vgem_prime_get_sg_table(struct drm_gem_object *obj)
static struct drm_gem_object* vgem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf)
{
- return drm_gem_prime_import_dev(dev, dma_buf, &vgem_platform->dev);
+ struct vgem_device *vgem = container_of(dev, typeof(*vgem), drm);
+
+ return drm_gem_prime_import_dev(dev, dma_buf, &vgem->platform->dev);
}
static struct drm_gem_object *vgem_prime_import_sg_table(struct drm_device *dev,
@@ -377,8 +382,19 @@ static int vgem_prime_mmap(struct drm_gem_object *obj,
return 0;
}
+static void vgem_release(struct drm_device *dev)
+{
+ struct vgem_device *vgem = container_of(dev, typeof(*vgem), drm);
+
+ platform_device_unregister(vgem->platform);
+ drm_dev_fini(&vgem->drm);
+
+ kfree(vgem);
+}
+
static struct drm_driver vgem_driver = {
.driver_features = DRIVER_GEM | DRIVER_PRIME,
+ .release = vgem_release,
.open = vgem_open,
.postclose = vgem_postclose,
.gem_free_object_unlocked = vgem_gem_free_object,
@@ -408,45 +424,48 @@ static struct drm_driver vgem_driver = {
.minor = DRIVER_MINOR,
};
-static struct drm_device *vgem_device;
-
static int __init vgem_init(void)
{
int ret;
- vgem_device = drm_dev_alloc(&vgem_driver, NULL);
- if (IS_ERR(vgem_device))
- return PTR_ERR(vgem_device);
+ vgem_device = kzalloc(sizeof(*vgem_device), GFP_KERNEL);
+ if (!vgem_device)
+ return -ENOMEM;
- vgem_platform = platform_device_register_simple("vgem",
- -1, NULL, 0);
+ ret = drm_dev_init(&vgem_device->drm, &vgem_driver, NULL);
+ if (ret)
+ goto out_free;
- if (!vgem_platform) {
+ vgem_device->platform =
+ platform_device_register_simple("vgem", -1, NULL, 0);
+ if (!vgem_device->platform) {
ret = -ENODEV;
- goto out;
+ goto out_fini;
}
- dma_coerce_mask_and_coherent(&vgem_platform->dev,
- DMA_BIT_MASK(64));
+ dma_coerce_mask_and_coherent(&vgem_device->platform->dev,
+ DMA_BIT_MASK(64));
- ret = drm_dev_register(vgem_device, 0);
+ /* Final step: expose the device/driver to userspace */
+ ret = drm_dev_register(&vgem_device->drm, 0);
if (ret)
- goto out_unref;
+ goto out_unregister;
return 0;
-out_unref:
- platform_device_unregister(vgem_platform);
-out:
- drm_dev_unref(vgem_device);
+out_unregister:
+ platform_device_unregister(vgem_device->platform);
+out_fini:
+ drm_dev_fini(&vgem_device->drm > +out_free:
+ kfree(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);
+ drm_dev_unregister(&vgem_device->drm);
+ drm_dev_unref(&vgem_device->drm);
}
module_init(vgem_init);
