From: Jani Nikula Date: Fri, 3 Jan 2025 13:52:31 +0000 (+0200) Subject: drm/i915/ddi: enable 128b/132b TRANS_DDI_FUNC_CTL mode for UHBR SST X-Git-Tag: v6.14-rc1~174^2~8^2~12 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f82724a3e86927a09a285358bef2369f4c3504a;p=thirdparty%2Fkernel%2Flinux.git drm/i915/ddi: enable 128b/132b TRANS_DDI_FUNC_CTL mode for UHBR SST 128b/132b SST needs 128b/132b mode enabled in the TRANS_DDI_FUNC_CTL register. This is preparation for enabling 128b/132b SST. This path is not reachable yet. v2: Use the MST path instead of SST to also set transport select (Imre) Reviewed-by: Imre Deak Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/122ebeadf4bf0870fc26b7d12abdff88f4be8799.1735912293.git.jani.nikula@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 483d9e5da586f..74a582d40e5cf 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -561,7 +561,8 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder, } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) { temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; temp |= (crtc_state->fdi_lanes - 1) << 1; - } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) { + } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST) || + intel_dp_is_uhbr(crtc_state)) { if (intel_dp_is_uhbr(crtc_state)) temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; else