[Intel-gfx] [PATCH] drm/i915/vlv: use PIPE_START_VBLANK interrupts on VLV

[Daniel Vetter]

On Tue, Nov 05, 2013 at 03:48:01PM -0800, Jesse Barnes wrote:
> This fixes a mismatch between our vblank enable code and our IRQ
> handler.  Also, since vblank start events come in before page flips
> reliably, it also fixes the kms_flip plain-flip test on my BYT system.
> 
> Spotted-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>

So kms_flip isn't totally crap I hear?

One problem is that the iosf bug is blocking QA's ability to use kms_flip
as a regression tests. I wonder a bit whether we need to split out the
results as subtests so that each connector type can be tracked
individually. The problem with that is that we'd have unstable subtest
names, which is a bit ugly ... Good ideas highly welcome.

Picked up for -fixes, thanks for the patch.
-Daniel
> ---
>  drivers/gpu/drm/i915/i915_irq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 2a44816..32c9c8d 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -1353,7 +1353,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg)
>  		spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
>  
>  		for_each_pipe(pipe) {
> -			if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
> +			if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
>  				drm_handle_vblank(dev, pipe);
>  
>  			if (pipe_stats[pipe] & PLANE_FLIPDONE_INT_STATUS_VLV) {
> -- 
> 1.8.4.2
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch