On Wed, Jan 21, 2026 at 09:23:18AM +0530, Ankit Nautiyal wrote:
> Move the calculation of `num_joined_pipes` and other constraints that
> depend on it, into a single block.
> This groups all joiner-dependent logic together, preparing the code for a
> future loop-based evaluation of multiple joiner configurations.
> 
> Signed-off-by: Ankit Nautiyal <[email protected]>

Reviewed-by: Imre Deak <[email protected]>

> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 32 ++++++++++++-------------
>  1 file changed, 16 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 126da297efc5..c0a8ffac6312 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -1472,20 +1472,9 @@ intel_dp_mode_valid(struct drm_connector *_connector,
>               target_clock = fixed_mode->clock;
>       }
>  
> -     num_joined_pipes = intel_dp_num_joined_pipes(intel_dp, connector,
> -                                                  mode->hdisplay, 
> target_clock);
> -     max_dotclk *= num_joined_pipes;
> -
>       sink_format = intel_dp_sink_format(connector, mode);
>       output_format = intel_dp_output_format(connector, sink_format);
>  
> -     status = intel_pfit_mode_valid(display, mode, output_format, 
> num_joined_pipes);
> -     if (status != MODE_OK)
> -             return status;
> -
> -     if (target_clock > max_dotclk)
> -             return MODE_CLOCK_HIGH;
> -
>       max_link_clock = intel_dp_max_link_rate(intel_dp);
>       max_lanes = intel_dp_max_lane_count(intel_dp);
>  
> @@ -1496,6 +1485,17 @@ intel_dp_mode_valid(struct drm_connector *_connector,
>                                          target_clock, mode->hdisplay,
>                                          link_bpp_x16, 0);
>  
> +     num_joined_pipes = intel_dp_num_joined_pipes(intel_dp, connector,
> +                                                  mode->hdisplay, 
> target_clock);
> +     max_dotclk *= num_joined_pipes;
> +
> +     if (target_clock > max_dotclk)
> +             return MODE_CLOCK_HIGH;
> +
> +     status = intel_pfit_mode_valid(display, mode, output_format, 
> num_joined_pipes);
> +     if (status != MODE_OK)
> +             return status;
> +
>       if (intel_dp_has_dsc(connector)) {
>               int pipe_bpp;
>  
> @@ -1538,14 +1538,14 @@ intel_dp_mode_valid(struct drm_connector *_connector,
>       if (intel_dp_joiner_needs_dsc(display, num_joined_pipes) && !dsc)
>               return MODE_CLOCK_HIGH;
>  
> +     status = intel_mode_valid_max_plane_size(display, mode, 
> num_joined_pipes);
> +     if (status != MODE_OK)
> +             return status;
> +
>       if (mode_rate > max_rate && !dsc)
>               return MODE_CLOCK_HIGH;
>  
> -     status = intel_dp_mode_valid_downstream(connector, mode, target_clock);
> -     if (status != MODE_OK)
> -             return status;
> -
> -     return intel_mode_valid_max_plane_size(display, mode, num_joined_pipes);
> +     return intel_dp_mode_valid_downstream(connector, mode, target_clock);
>  }
>  
>  bool intel_dp_source_supports_tps3(struct intel_display *display)
> -- 
> 2.45.2
> 

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