Re: [PATCH] drm/i915: Enable runtime pm

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On Tue, Nov 07, 2017 at 05:18:21PM +0100, Daniel Vetter 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 ...
> 
> Cc: Takashi Iwai <tiwai@xxxxxxx>
> Cc: Liam Girdwood <liam.r.girdwood@xxxxxxxxx>
> Cc: "Yang, Libin" <libin.yang@xxxxxxxxx>
> Cc: "Lin, Mengdong" <mengdong.lin@xxxxxxxxx>
> Cc: "Li, Jocelyn" <jocelyn.li@xxxxxxxxx>
> Cc: "Kaskinen, Tanu" <tanu.kaskinen@xxxxxxxxx>
> Cc: "Zanoni, Paulo R" <paulo.r.zanoni@xxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>

lgtm,

Reviewed-by: David Weinehall <david.weinehall@xxxxxxxxxxxxxxx>

> ---
>  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
> -- 
> 2.15.0.rc2
> 
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