[Intel-gfx] [PATCH v2 1/6] drm/i915/psr: Allow PSR2 to be enabled when debugfs asks

[Dhinakaran Pandiyan]

On Thu, 2019-01-03 at 06:21 -0800, José Roberto de Souza wrote:
> For now PSR2 is still disabled by default for all platforms but is
> our intention to let debugfs to enable it for debug and tests
> proporses, so intel_psr2_enabled() that is also used by debugfs to
> decide if PSR2 is going to be enabled needs to take in consideration
> the debug field.
> 
> v2: Using the switch/case that intel_psr2_enabled() already had to
> handle this(DK)

Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> 
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_psr.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_psr.c
> b/drivers/gpu/drm/i915/intel_psr.c
> index dce39f06b682..0ef6c5f8c298 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -71,17 +71,17 @@ static bool psr_global_enabled(u32 debug)
>  static bool intel_psr2_enabled(struct drm_i915_private *dev_priv,
>  			       const struct intel_crtc_state
> *crtc_state)
>  {
> -	/* Disable PSR2 by default for all platforms */
> -	if (i915_modparams.enable_psr == -1)
> -		return false;
> -
>  	/* Cannot enable DSC and PSR2 simultaneously */
>  	WARN_ON(crtc_state->dsc_params.compression_enable &&
>  		crtc_state->has_psr2);
>  
>  	switch (dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK) {
> +	case I915_PSR_DEBUG_DISABLE:
>  	case I915_PSR_DEBUG_FORCE_PSR1:
>  		return false;
> +	case I915_PSR_DEBUG_DEFAULT:
> +		if (i915_modparams.enable_psr <= 0)
> +			return false;
>  	default:
>  		return crtc_state->has_psr2;
>  	}