Re: [PATCH i-g-t 2/3] lib/igt_kms: Remove vblank wait after plane update.

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On Wed, 2017-08-02 at 12:29 +0200, Maarten Lankhorst wrote:
> With the conversion to atomic, this is already handled in the core.
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> ---
>  lib/igt_kms.c | 15 ---------------
>  lib/igt_kms.h |  1 -
>  2 files changed, 16 deletions(-)
> 
> diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> index 6390229f1546..14e2701c3afd 100644
> --- a/lib/igt_kms.c
> +++ b/lib/igt_kms.c
> @@ -2374,8 +2374,6 @@ static int
> igt_primary_plane_commit_legacy(igt_plane_t *primary,
>  
>  	CHECK_RETURN(ret, fail_on_error);
>  
> -	primary->pipe->enabled = (fb_id != 0);
> -
How was this related to vblank wait removal?

>  	return 0;
>  }
>  
> @@ -2413,10 +2411,8 @@ static int igt_pipe_commit(igt_pipe_t *pipe,
>  			   enum igt_commit_style s,
>  			   bool fail_on_error)
>  {
> -	igt_display_t *display = pipe->display;
>  	int i;
>  	int ret;
> -	bool need_wait_for_vblank = false;
>  
>  	if (pipe->background_changed) {
>  		igt_crtc_set_property(pipe, pipe-
> >background_property,
> @@ -2435,21 +2431,10 @@ static int igt_pipe_commit(igt_pipe_t *pipe,
>  	for (i = 0; i < pipe->n_planes; i++) {
>  		igt_plane_t *plane = &pipe->planes[i];
>  
> -		if (plane->fb_changed || plane->position_changed ||
> plane->size_changed)
> -			need_wait_for_vblank = true;
> -
>  		ret = igt_plane_commit(plane, pipe, s,
> fail_on_error);
>  		CHECK_RETURN(ret, fail_on_error);
>  	}
>  
> -	/*
> -	 * If the crtc is enabled, wait until the next vblank before
> returning
> -	 * if we made changes to any of the planes.
> -	 */
> -	if (need_wait_for_vblank && pipe->enabled) {
> -		igt_wait_for_vblank(display->drm_fd, pipe->pipe);
> -	}
> -
>  	return 0;
>  }
>  
> diff --git a/lib/igt_kms.h b/lib/igt_kms.h
> index 35428f3e9675..d18a92600933 100644
> --- a/lib/igt_kms.h
> +++ b/lib/igt_kms.h
> @@ -323,7 +323,6 @@ typedef struct {
>  struct igt_pipe {
>  	igt_display_t *display;
>  	enum pipe pipe;
> -	bool enabled;
>  
>  	int n_planes;
>  	int plane_cursor;
-- 
Mika Kahola - Intel OTC

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