diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2025-01-03 16:52:37 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2025-01-07 19:44:22 +0300 |
| commit | 40d489fac0e82e3f758b17d775355f514a6ec970 (patch) | |
| tree | a18dfac6ecb3409b487dd58f644aeaeeda970073 | |
| parent | 35d2e4b7564994e69583e12b0a0d74521657faeb (diff) | |
| download | linux-40d489fac0e82e3f758b17d775355f514a6ec970.tar.xz | |
drm/i915/ddi: handle 128b/132b SST in intel_ddi_read_func_ctl()
We'll only ever get here in MST mode from MST stream encoders; the
primary encoder's ->get_config() won't be called when we've detected
it's MST.
v2: Read mst_master_transcoder in 128b/132b SST path (Imre)
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/436854c0bb6ab5c14c3d3837694ea60ac2fbaba2.1735912293.git.jani.nikula@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 327277d4e94d..594cbac816d7 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4049,6 +4049,11 @@ static void intel_ddi_read_func_ctl_dp_sst(struct intel_encoder *encoder, crtc_state->lane_count = ((ddi_func_ctl & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1; + if (DISPLAY_VER(display) >= 12 && + (ddi_func_ctl & TRANS_DDI_MODE_SELECT_MASK) == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B) + crtc_state->mst_master_transcoder = + REG_FIELD_GET(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, ddi_func_ctl); + intel_cpu_transcoder_get_m1_n1(crtc, cpu_transcoder, &crtc_state->dp_m_n); intel_cpu_transcoder_get_m2_n2(crtc, cpu_transcoder, &crtc_state->dp_m2_n2); @@ -4143,9 +4148,19 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder, intel_ddi_read_func_ctl_fdi(encoder, pipe_config, ddi_func_ctl); } else if (ddi_mode == TRANS_DDI_MODE_SELECT_DP_SST) { intel_ddi_read_func_ctl_dp_sst(encoder, pipe_config, ddi_func_ctl); - } else if (ddi_mode == TRANS_DDI_MODE_SELECT_DP_MST || - (ddi_mode == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B && HAS_DP20(display))) { + } else if (ddi_mode == TRANS_DDI_MODE_SELECT_DP_MST) { intel_ddi_read_func_ctl_dp_mst(encoder, pipe_config, ddi_func_ctl); + } else if (ddi_mode == TRANS_DDI_MODE_SELECT_FDI_OR_128B132B && HAS_DP20(display)) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + + /* + * If this is true, we know we're being called from mst stream + * encoder's ->get_config(). + */ + if (intel_dp->is_mst) + intel_ddi_read_func_ctl_dp_mst(encoder, pipe_config, ddi_func_ctl); + else + intel_ddi_read_func_ctl_dp_sst(encoder, pipe_config, ddi_func_ctl); } } |