Thank You for the patch.
Do you think we need to revert:
9c058492b16f ("drm/i915/mst: Reject modes that require the bigjoiner")
On Wed, 2024-02-21 at 00:09 +0200, Stanislav Lisovskiy wrote:
> Patch calculates bigjoiner pipes in mst compute.
> Patch also passes bigjoiner bool to validate plane
> max size.
>
> Signed-off-by: vsrini4 <vidya.srinivas@xxxxxxxxx>
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 19 ++++++++++++-------
> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index 5307ddd4edcf5..fd27d9976c050 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -523,6 +523,7 @@ static int intel_dp_mst_compute_config(struct
> intel_encoder *encoder,
> struct drm_connector_state
> *conn_state)
> {
> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> + struct intel_crtc *crtc = to_intel_crtc(pipe_config-
> >uapi.crtc);
> struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
> struct intel_dp *intel_dp = &intel_mst->primary->dp;
> const struct intel_connector *connector =
> @@ -540,6 +541,10 @@ static int intel_dp_mst_compute_config(struct
> intel_encoder *encoder,
> if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
> return -EINVAL;
>
> + if (intel_dp_need_bigjoiner(intel_dp, adjusted_mode-
> >crtc_hdisplay,
> + adjusted_mode->crtc_clock))
> + pipe_config->bigjoiner_pipes = GENMASK(crtc->pipe + 1,
> crtc->pipe);
> +
> pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
> pipe_config->has_pch_encoder = false;
> @@ -1318,12 +1323,6 @@ intel_dp_mst_mode_valid_ctx(struct
> drm_connector *connector,
> * corresponding link capabilities of the sink) in case the
> * stream is uncompressed for it by the last branch device.
> */
> - if (mode_rate > max_rate || mode->clock > max_dotclk ||
> - drm_dp_calc_pbn_mode(mode->clock, min_bpp << 4) > port-
> >full_pbn) {
> - *status = MODE_CLOCK_HIGH;
> - return 0;
> - }
> -
> if (mode->clock < 10000) {
> *status = MODE_CLOCK_LOW;
> return 0;
> @@ -1343,6 +1342,12 @@ intel_dp_mst_mode_valid_ctx(struct
> drm_connector *connector,
> return 0;
> }
>
> + if (mode_rate > max_rate || mode->clock > max_dotclk ||
> + drm_dp_calc_pbn_mode(mode->clock, min_bpp << 4) > port-
> >full_pbn) {
> + *status = MODE_CLOCK_HIGH;
> + return 0;
> + }
> +
> if (DISPLAY_VER(dev_priv) >= 10 &&
> drm_dp_sink_supports_dsc(intel_connector->dp.dsc_dpcd)) {
> /*
> @@ -1385,7 +1390,7 @@ intel_dp_mst_mode_valid_ctx(struct
> drm_connector *connector,
> return 0;
> }
>
> - *status = intel_mode_valid_max_plane_size(dev_priv, mode,
> false);
> + *status = intel_mode_valid_max_plane_size(dev_priv, mode,
> bigjoiner);
> return 0;
> }
>
