[Intel-gfx] [PATCH 08/10] drm/i915/psr: enable psr2 for y cordinate panels

[Rodrigo Vivi]

On Mon, Jan 02, 2017 at 05:01:01PM +0530, vathsala nagaraju wrote:
> Psr2 is enabled only for y cordinate panels.Once GTC (global time code)
> is implemented,this restriction is removed so that psr2
> can work on panels without y cordinate support.
> 
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: Jim Bride <jim.bride at linux.intel.com>
> Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju at intel.com>
> Signed-off-by: Patil Deepti <deepti.patil at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_psr.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index 19cd4d7..ca3ef3e 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -495,6 +495,15 @@ void intel_psr_enable(struct intel_dp *intel_dp)

I believe the better place for this code is on the match_conditions function...

>  		return;
>  	}
>  
> +	/*
> +	 * FIXME:enable psr2 only for y-cordinate psr2 panels
> +	 * After gtc implementation , remove this restriction.
> +	 */
> +	if (!dev_priv->psr.y_cord_support &&  dev_priv->psr.psr2_support) {
> +		DRM_DEBUG_KMS("PSR2 disabled, panel does not support Y coordinate\n");
> +		return;
> +	}
> +
>  	mutex_lock(&dev_priv->psr.lock);
>  	if (dev_priv->psr.enabled) {
>  		DRM_DEBUG_KMS("PSR already in use\n");
> -- 
> 1.9.1
>