[Intel-gfx] [PATCH 2/2] drm/i915: eDP DRRS limited to only one panel at a time

[Sivakumar Thulasimani]

since drrs struct is used primarily in intel_dp.c file alone can it be 
moved to intel_dp ?

On 3/23/2015 11:12 PM, Ramalingam C wrote:
> In case of multiple eDP panels, only one can have
> the DRRS enabled on it.
>
> In future eDP DRRS will be extended for multiple panels.
>
> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> ---
>   drivers/gpu/drm/i915/intel_dp.c |    5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 0b26df9..ec40d19 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -5311,6 +5311,11 @@ intel_dp_drrs_init(struct intel_connector *intel_connector,
>   		return NULL;
>   	}
>   
> +	if (dev_priv->drrs.type == SEAMLESS_DRRS_SUPPORT) {
> +		DRM_DEBUG_KMS("DRRS already enabled on previous connector\n");
> +		return NULL;
> +	}
> +
>   	INIT_DELAYED_WORK(&dev_priv->drrs.work, intel_edp_drrs_downclock_work);
>   
>   	mutex_init(&dev_priv->drrs.mutex);