drm: Advertise async page flip ability through GETCAP ioctl
Let applications know whether the kernel supports asynchronous page flipping. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Dave Airlie <airlied@gmail.com>
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9bba0c42ec
Коммит
62f2104f3f
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@ -3508,6 +3508,9 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
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page_flip->reserved != 0)
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return -EINVAL;
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if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
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return -EINVAL;
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obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
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if (!obj)
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return -EINVAL;
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@ -293,6 +293,9 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
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case DRM_CAP_TIMESTAMP_MONOTONIC:
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req->value = drm_timestamp_monotonic;
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break;
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case DRM_CAP_ASYNC_PAGE_FLIP:
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req->value = dev->mode_config.async_page_flip;
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break;
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default:
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return -EINVAL;
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}
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@ -842,6 +842,9 @@ struct drm_mode_config {
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/* dumb ioctl parameters */
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uint32_t preferred_depth, prefer_shadow;
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/* whether async page flip is supported or not */
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bool async_page_flip;
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};
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#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
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@ -780,6 +780,7 @@ struct drm_event_vblank {
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#define DRM_CAP_DUMB_PREFER_SHADOW 0x4
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#define DRM_CAP_PRIME 0x5
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#define DRM_CAP_TIMESTAMP_MONOTONIC 0x6
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#define DRM_CAP_ASYNC_PAGE_FLIP 0x7
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#define DRM_PRIME_CAP_IMPORT 0x1
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#define DRM_PRIME_CAP_EXPORT 0x2
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