On Fri, May 07, 2021 at 07:28:12PM -0700, Matt Roper wrote:
> From: Animesh Manna <animesh.manna@xxxxxxxxx>
>
> For uncompressed big joiner DSC engine will not be used so will avoid
> compute config of DSC.
>
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
> Signed-off-by: Clinton Taylor <Clinton.A.Taylor@xxxxxxxxx>
> Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Reviewed-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Manasi
> ---
> drivers/gpu/drm/i915/display/intel_dp.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 92d4c5ab32d7..a1a472ffef6d 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -1371,9 +1371,13 @@ intel_dp_compute_link_config(struct intel_encoder *encoder,
> */
> ret = intel_dp_compute_link_config_wide(intel_dp, pipe_config, &limits);
>
> - /* enable compression if the mode doesn't fit available BW */
> + /*
> + * Pipe joiner needs compression upto display12 due to BW limitation. DG2
> + * onwards pipe joiner can be enabled without compression.
> + */
> drm_dbg_kms(&i915->drm, "Force DSC en = %d\n", intel_dp->force_dsc_en);
> - if (ret || intel_dp->force_dsc_en || pipe_config->bigjoiner) {
> + if (ret || intel_dp->force_dsc_en || (DISPLAY_VER(i915) < 13 &&
> + pipe_config->bigjoiner)) {
> ret = intel_dp_dsc_compute_config(intel_dp, pipe_config,
> conn_state, &limits);
> if (ret < 0)
> --
> 2.25.4
>
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