linux-kernel - Re: [PATCHv4 5/6] drm/omap: add framedone interrupt support

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Message-ID: <20181119120520.qaw6qyxyirjahzcn@earth.universe>
Date:   Mon, 19 Nov 2018 13:05:20 +0100
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Pavel Machek <pavel@....cz>
Cc:     Tomi Valkeinen <tomi.valkeinen@...com>,
        Tony Lindgren <tony@...mide.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        "H. Nikolaus Schaller" <hns@...delico.com>,
        dri-devel@...ts.freedesktop.org, linux-omap@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCHv4 5/6] drm/omap: add framedone interrupt support

Hi,

On Sat, Nov 17, 2018 at 10:08:40PM +0100, Pavel Machek wrote:
> > This prepares framedone interrupt handling for
> > manual display update support.
> > 
> > Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> 
> Acked-by: Pavel Machek <pavel@....cz>

Thanks.

> > @@ -217,6 +239,9 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
> >  
> >  		if (irqstatus & priv->dispc_ops->mgr_get_sync_lost_irq(priv->dispc, channel))
> >  			omap_crtc_error_irq(crtc, irqstatus);
> > +
> > +		if (irqstatus & priv->dispc_ops->mgr_get_framedone_irq(priv->dispc, channel))
> > +			omap_crtc_framedone_irq(crtc, irqstatus);
> >  	}
> >  
> >  	omap_irq_ocp_error_handler(dev, irqstatus);
> 
> Will the mgr_get_framedone_irq(priv->dispc, channel) change from
> interrupt to interrupt? Would it make sense to cache result as a
> micro-organization?

Maybe. But this is the same for the the omap_crtc_error_* and the
driver is currently being restructured by Laurent. I think this can
wait for later.

-- Sebastian

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