[RFC PATCH] drm: Add plane event

[Joonyoung Shim]

On 04/18/2012 05:46 PM, Daniel Vetter wrote:
> On Wed, Apr 18, 2012 at 01:31:59PM +0900, Joonyoung Shim wrote:
>> DRM_MODE_PLANE_EVENT is similar to DRM_MODE_PAGE_FLIP_EVENT but it is
>> for a plane. The setplane ioctl (DRM_IOCTL_MODE_SETPLANE) needs to
>> provide the event such as DRM_MODE_PAGE_FLIP_EVENT. The setplane ioctl
>> can change the framebuffer of plane but user can't know completion of
>> changing the framebuffer of plane via event. If DRM_MODE_PLANE_EVENT is
>> added, we can also do pageflip of a plane.
>>
>> Signed-off-by: Joonyoung Shim<jy0922.shim at samsung.com>
>> Signed-off-by: Kyungmin Park<kyungmin.park at samsung.com>
> If I understand the current kms api correctly, set_plane is akin to
> set_base and should not generate an asynchronous flip completion event. To
> do that we need a new pageflip ioctl which changes a complete set of fb +
> planes + any crtc attributes that might be in an atomic fashion. At which
> point we can just reuse the existing page flip event mechanism.

It seems better way to add new pageflip ioctl for plane. I will try it.

Thanks for review.