Re: [PATCH 16/26] drm/hdlcd: Use helper support for nonblocking commits

From: Daniel Vetter <daniel@ffwll.ch>
To: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
	Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	DRI Development <dri-devel@lists.freedesktop.org>,
	Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [PATCH 16/26] drm/hdlcd: Use helper support for nonblocking commits
Date: Tue, 31 May 2016 13:07:15 +0200	[thread overview]
Message-ID: <20160531110715.GA7231@phenom.ffwll.local> (raw)
In-Reply-To: <20160531110223.GY23566@e106497-lin.cambridge.arm.com>

On Tue, May 31, 2016 at 12:02:23PM +0100, Liviu Dudau wrote:
> On Sun, May 29, 2016 at 08:35:13PM +0200, Daniel Vetter wrote:
> > Again, just doing them as blocking commits isn't cool.
> > 
> > From a cursory check hdlcd does seem to at least try to handle
> > drm_pending_vblank_event, so hopefully this works.
> > 
> > Cc: Liviu Dudau <Liviu.Dudau@arm.com>
> > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> 
> Daniel,
> 
> I have a proper implementation for this, which I will send out shortly, so I will
> NAK this patch.

Please don't implement your own atomic nonblocking commit any more. I have
a generic solution, which this patch series implements and then also
converts hdlcd over to it. I admit the commit message is a bit unclear
with that.

If you don't want to pick this up from the mailing lists it's also in my
fdo git repo:

https://cgit.freedesktop.org/~danvet/drm/log/

So nack on your nack ;-)

Cheers, Daniel

> 
> Best regards,
> Liviu
> 
> > ---
> >  drivers/gpu/drm/arm/hdlcd_drv.c | 8 +-------
> >  1 file changed, 1 insertion(+), 7 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
> > index 4f909378d581..6d1877238cf0 100644
> > --- a/drivers/gpu/drm/arm/hdlcd_drv.c
> > +++ b/drivers/gpu/drm/arm/hdlcd_drv.c
> > @@ -112,17 +112,11 @@ static void hdlcd_fb_output_poll_changed(struct drm_device *drm)
> >  		drm_fbdev_cma_hotplug_event(hdlcd->fbdev);
> >  }
> >  
> > -static int hdlcd_atomic_commit(struct drm_device *dev,
> > -			       struct drm_atomic_state *state, bool nonblock)
> > -{
> > -	return drm_atomic_helper_commit(dev, state, false);
> > -}
> > -
> >  static const struct drm_mode_config_funcs hdlcd_mode_config_funcs = {
> >  	.fb_create = drm_fb_cma_create,
> >  	.output_poll_changed = hdlcd_fb_output_poll_changed,
> >  	.atomic_check = drm_atomic_helper_check,
> > -	.atomic_commit = hdlcd_atomic_commit,
> > +	.atomic_commit = drm_atomic_helper_commit,
> >  };
> >  
> >  static void hdlcd_setup_mode_config(struct drm_device *drm)
> > -- 
> > 2.8.1
> > 
> 
> -- 
> ====================
> | I would like to |
> | fix the world,  |
> | but they're not |
> | giving me the   |
>  \ source code!  /
>   ---------------
>     ¯\_(ツ)_/¯

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel