Re: [PATCH] drm/i915/mst: update max stream count to match number of pipes

[Jani Nikula <jani.nikula@intel.com>]

On Wed, 26 Feb 2025, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
> On Wed, Feb 26, 2025 at 03:56:26PM +0200, Jani Nikula wrote:
>> We create the stream encoders and attach connectors for each pipe we
>> have. As the number of pipes has increased, we've failed to update the
>> topology manager maximum number of payloads to match that. Bump up the
>> max stream count to match number of pipes, enabling the fourth stream on
>> platforms that support four pipes.
>> 
>> Cc: stable@vger.kernel.org
>> Cc: Imre Deak <imre.deak@intel.com>
>> Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
>> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Thanks, pushed to din.

BR,
Jani.

>
>> ---
>>  drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>> 
>> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
>> index 167e4a70ab12..822218d8cfd4 100644
>> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
>> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
>> @@ -1896,7 +1896,8 @@ intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_base_id)
>>  	/* create encoders */
>>  	mst_stream_encoders_create(dig_port);
>>  	ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, display->drm,
>> -					   &intel_dp->aux, 16, 3, conn_base_id);
>> +					   &intel_dp->aux, 16,
>> +					   INTEL_NUM_PIPES(display), conn_base_id);
>>  	if (ret) {
>>  		intel_dp->mst_mgr.cbs = NULL;
>>  		return ret;
>> -- 
>> 2.39.5

-- 
Jani Nikula, Intel