[Intel-gfx] [PATCH] drm/i915: Enable runtime pm

[Jani Nikula]

On Tue, 07 Nov 2017, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> Now that we have CI, and that pm_rpm fully passes (I guess the audio
> folks have implemented proper runtime pm for snd-hda, hooray, pls
> confirm) it's time to enable this again by default.
>
> Real goal here is to have 1 configuration only that we fully support,
> instead of tons of different codes with every user/customer tuning it
> differently. And really, power stuff should work by default, and
> should be enabled by everywhere where it is save to do so.
>
> v2: Completely new commit message, a few years passed since v1 ...

I suppose this is something that could use more than a single round of
IGT CI before merging...?

BR,
Jani.



>
> Cc: Takashi Iwai <tiwai at suse.de>
> Cc: Liam Girdwood <liam.r.girdwood at intel.com>
> Cc: "Yang, Libin" <libin.yang at intel.com>
> Cc: "Lin, Mengdong" <mengdong.lin at intel.com>
> Cc: "Li, Jocelyn" <jocelyn.li at intel.com>
> Cc: "Kaskinen, Tanu" <tanu.kaskinen at intel.com>
> Cc: "Zanoni, Paulo R" <paulo.r.zanoni at intel.com>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_runtime_pm.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index 8315499452dc..dc24d008d8d4 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -3232,7 +3232,7 @@ void intel_runtime_pm_enable(struct drm_i915_private *dev_priv)
>  	struct pci_dev *pdev = dev_priv->drm.pdev;
>  	struct device *kdev = &pdev->dev;
>  
> -	pm_runtime_set_autosuspend_delay(kdev, 10000); /* 10s */
> +	pm_runtime_set_autosuspend_delay(kdev, 100);
>  	pm_runtime_mark_last_busy(kdev);
>  
>  	/*
> @@ -3251,6 +3251,8 @@ void intel_runtime_pm_enable(struct drm_i915_private *dev_priv)
>  		pm_runtime_use_autosuspend(kdev);
>  	}
>  
> +	pm_runtime_allow(kdev);
> +
>  	/*
>  	 * The core calls the driver load handler with an RPM reference held.
>  	 * We drop that here and will reacquire it during unloading in

-- 
Jani Nikula, Intel Open Source Technology Center