Re: [PATCH 01/11] drm/i915/psr: Move specific HSW+ WARN_ON to HSW+ function

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Fri, Mar 30, 2018 at 03:23:26PM -0700, José Roberto de Souza wrote:
> It was reading some random register in VLV and CHV.
> 
> Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>

I'm sure that my patch [1] will conflict with this series.

[1] https://patchwork.freedesktop.org/series/39650/

But the approach here is right and I couldn't get back there
yet and address latest DK's requests. So:

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>


> ---
>  drivers/gpu/drm/i915/intel_psr.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index 2d53f7398a6d..fc7c36efd401 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -424,6 +424,11 @@ static void hsw_psr_activate(struct intel_dp *intel_dp)
>  	struct drm_device *dev = dig_port->base.base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
>  
> +	if (dev_priv->psr.psr2_enabled)
> +		WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE);
> +	else
> +		WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
> +
>  	/* On HSW+ after we enable PSR on source it will activate it
>  	 * as soon as it match configure idle_frame count. So
>  	 * we just actually enable it here on activation time.
> @@ -549,10 +554,6 @@ static void intel_psr_activate(struct intel_dp *intel_dp)
>  	struct drm_device *dev = intel_dig_port->base.base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
>  
> -	if (dev_priv->psr.psr2_enabled)
> -		WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE);
> -	else
> -		WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
>  	WARN_ON(dev_priv->psr.active);
>  	lockdep_assert_held(&dev_priv->psr.lock);
>  
> -- 
> 2.16.3
> 
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