drm: Advertise async page flip ability through GETCAP ioctl

Let applications know whether the kernel supports asynchronous page flipping.

Keith Packard committed 13 years ago

Commit 62f21041 parent 9bba0c44 files · +10 −0Browse files

Unified · Split

4 files

drivers/gpu/drm/drm_crtc.c +3 −0
drivers/gpu/drm/drm_ioctl.c +3 −0
include/drm/drm_crtc.h +3 −0
include/uapi/drm/drm.h +1 −0

drivers/gpu/drm/drm_crtc.c+3−0

@@ -3508,6 +3508,9 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, · 3507 unmodified lines
3508	3508	page_flip->reserved != 0)
3509	3509	return -EINVAL;
3510	3510
	3511	+ if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
	3512	+ return -EINVAL;
	3513	+
3511	3514	obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3512	3515	if (!obj)
3513	3516	return -EINVAL;

drivers/gpu/drm/drm_ioctl.c+3−0

@@ -293,6 +293,9 @@ int drm_getcap(struct drm_device dev, void data, struct drm_file *file_priv) · 292 unmodified lines
293	293	case DRM_CAP_TIMESTAMP_MONOTONIC:
294	294	req->value = drm_timestamp_monotonic;
295	295	break;
	296	+ case DRM_CAP_ASYNC_PAGE_FLIP:
	297	+ req->value = dev->mode_config.async_page_flip;
	298	+ break;
296	299	default:
297	300	return -EINVAL;
298	301	}

include/drm/drm_crtc.h+3−0

@@ -842,6 +842,9 @@ struct drm_mode_config { · 841 unmodified lines
842	842
843	843	/* dumb ioctl parameters */
844	844	uint32_t preferred_depth, prefer_shadow;
	845	+
	846	+ /* whether async page flip is supported or not */
	847	+ bool async_page_flip;
845	848	};
846	849
847	850	#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)

include/uapi/drm/drm.h+1−0

@@ -780,6 +780,7 @@ struct drm_event_vblank { · 779 unmodified lines
780	780	#define DRM_CAP_DUMB_PREFER_SHADOW 0x4
781	781	#define DRM_CAP_PRIME 0x5
782	782	#define DRM_CAP_TIMESTAMP_MONOTONIC 0x6
	783	+#define DRM_CAP_ASYNC_PAGE_FLIP 0x7
783	784
784	785	#define DRM_PRIME_CAP_IMPORT 0x1
785	786	#define DRM_PRIME_CAP_EXPORT 0x2