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virtio-gpu: add atomic_commit function 

Do modesets first, then call drm_atomic_helper_commit_planes with
active_only = true.  That way the outputs doesn't get disabled
temporarly on atomic commits.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2016-05-31 08:50:47 +02:00
parent d3767d49f1
commit e7cf0963f8
2 changed files with 22 additions and 1 deletions
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22
drivers/gpu/drm/virtio/virtgpu_display.c
View File

@ -466,10 +466,30 @@ virtio_gpu_user_framebuffer_create(struct drm_device *dev,
return &virtio_gpu_fb->base;
}
static int vgdev_atomic_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool nonblock)
{
if (nonblock)
return -EBUSY;
drm_atomic_helper_swap_state(dev, state);
drm_atomic_helper_wait_for_fences(dev, state);
drm_atomic_helper_commit_modeset_disables(dev, state);
drm_atomic_helper_commit_modeset_enables(dev, state);
drm_atomic_helper_commit_planes(dev, state, true);
drm_atomic_helper_wait_for_vblanks(dev, state);
drm_atomic_helper_cleanup_planes(dev, state);
drm_atomic_state_free(state);
return 0;
}
static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
.fb_create = virtio_gpu_user_framebuffer_create,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
.atomic_commit = vgdev_atomic_commit,
};
int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)

1
drivers/gpu/drm/virtio/virtgpu_drv.h
View File

@ -33,6 +33,7 @@
#include <drm/drmP.h>
#include <drm/drm_gem.h>
#include <drm/drm_atomic.h>
#include <drm/drm_crtc_helper.h>
#include <ttm/ttm_bo_api.h>
#include <ttm/ttm_bo_driver.h>