[Intel-gfx] [PATCH v3] drm/i915/rpm: Enable runtime pm autosuspend by default

[Anshuman Gupta]

On 2021-11-16 at 21:22:38 +0530, Tilak Tangudu wrote:
> v1: Enable runtime pm autosuspend by default for Gen12
> and later versions.
> 
> v2: Enable runtime pm autosuspend by default for all
> platforms(Syrjala Ville)
> 
> v3: Change commit message(Nikula Jani)
It would require to reorder the commit log, version log
need to move after commit message.
Thanks,
Anshuman.
> Let's enable runtime pm autosuspend by default everywhere.
> So, we can allow D3hot and bigger power savings on idle scenarios.
> 
> But at this time let's not touch the autosuspend_delay time,
> what caused some regression on our previous attempt.
> 
> Also, the latest identified issue on GuC PM has been fixed by
> commit 1a52faed3131 ("drm/i915/guc: Take GT PM ref when deregistering
> context")
> 
> Signed-off-by: Tilak Tangudu <tilak.tangudu at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_runtime_pm.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index 0d85f3c5c526..22dab36afcb6 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -590,6 +590,9 @@ void intel_runtime_pm_enable(struct intel_runtime_pm *rpm)
>  		pm_runtime_use_autosuspend(kdev);
>  	}
>  
> +	/* Enable by default */
> +	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
> -- 
> 2.25.1
>