[Intel-gfx] [PATCH 2/2] drm/i915: Show PCI power state under debugfs/i915_runtime_pm_status

[Chris Wilson]

On Wed, Mar 30, 2016 at 08:55:51PM +0200, Daniel Vetter wrote:
> On Wed, Mar 30, 2016 at 03:18:41PM +0100, Chris Wilson wrote:
> > As the current PCI power state is an essential feature of runtime pm,
> > include it in the debugfs/i915_runtime_pm_status.
> > 
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Imre Deak <imre.deak at intel.com>
> > ---
> >  drivers/gpu/drm/i915/i915_debugfs.c | 9 +++++----
> >  1 file changed, 5 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> > index adabbb47a8aa..05d701122259 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -2695,10 +2695,8 @@ static int i915_runtime_pm_status(struct seq_file *m, void *unused)
> >  	struct drm_device *dev = node->minor->dev;
> >  	struct drm_i915_private *dev_priv = dev->dev_private;
> >  
> > -	if (!HAS_RUNTIME_PM(dev)) {
> > -		seq_puts(m, "not supported\n");
> > -		return 0;
> > -	}
> > +	if (!HAS_RUNTIME_PM(dev_priv))
> > +		seq_puts(m, "Runtime power management not supported\n");
> >  
> >  	seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->mm.busy));
> >  	seq_printf(m, "IRQs disabled: %s\n",
> > @@ -2709,6 +2707,9 @@ static int i915_runtime_pm_status(struct seq_file *m, void *unused)
> >  #else
> >  	seq_printf(m, "Device Power Management (CONFIG_PM) disabled\n");
> >  #endif
> > +	seq_printf(m, "PCI device power state: %s [%d]\n",
> > +		   pci_power_names[dev_priv->dev->pdev->current_state],
> 
> Please use pci_power_name() instead (you are missing a + 1), and I don't
> think we need the raw value. With that addressed:

I put in the raw value since inside igt that is the value we see when we
look at pci_device_cfg(), so I thought it would be easier for
comparison purposes.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre