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

[Ramalingam C]

Hi Siva,

Since the same structure will be used to implement DRRS on DSI also we 
have placed it at i915_dev_priv.
I am working on the RFC for the DRRS on DSI.

On Tuesday 24 March 2015 07:33 AM, Sivakumar Thulasimani wrote:
> 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);
>

-- 
Ram