| Message ID | 20210125132711.27101-1-ville.syrjala@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [stable-5.10] drm/i915: Only enable DFP 4:4:4->4:2:0 conversion when outputting YCbCr 4:4:4 | expand |
On Mon, Jan 25, 2021 at 03:27:11PM +0200, Ville Syrjala wrote: > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > commit 1c4995b0a576d24bb7ead991fb037c8b47ab6e32 upstream. > > Let's not enable the 4:4:4->4:2:0 conversion bit in the DFP unless we're > actually outputting YCbCr 4:4:4. It would appear some protocol > converters blindy consult this bit even when the source is outputting > RGB, resulting in a visual mess. > > Cc: <stable@vger.kernel.org> # 0e634efd858e: drm/i915: s/intel_dp_sink_dpms/intel_dp_set_power/ > Cc: stable@vger.kernel.org > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2914 > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > Link: https://patchwork.freedesktop.org/patch/msgid/20210111164111.13302-1-ville.syrjala@linux.intel.com > Fixes: 181567aa9f0d ("drm/i915: Do YCbCr 444->420 conversion via DP protocol converters") > Reviewed-by: Jani Nikula <jani.nikula@intel.com> > (cherry picked from commit 3170a21f7059c4660c469f59bf529f372a57da5f) > Signed-off-by: Jani Nikula <jani.nikula@intel.com> > Link: https://patchwork.freedesktop.org/patch/msgid/20210118154355.24453-1-ville.syrjala@linux.intel.com > (cherry picked from commit 1c4995b0a576d24bb7ead991fb037c8b47ab6e32) > --- > Note the extra depdendency on commit 0e634efd858e > ("drm/i915: s/intel_dp_sink_dpms/intel_dp_set_power/"). Thanks for this, now queued up. greg k-h
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 80b7491f6bee..3f2bbd9370a8 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3470,7 +3470,7 @@ static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state, intel_ddi_init_dp_buf_reg(encoder); if (!is_mst) intel_dp_set_power(intel_dp, DP_SET_POWER_D0); - intel_dp_configure_protocol_converter(intel_dp); + intel_dp_configure_protocol_converter(intel_dp, crtc_state); intel_dp_sink_set_decompression_state(intel_dp, crtc_state, true); intel_dp_sink_set_fec_ready(intel_dp, crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 7804750b1ca7..1937b3d6342a 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -3856,7 +3856,8 @@ static void intel_dp_enable_port(struct intel_dp *intel_dp, intel_de_posting_read(dev_priv, intel_dp->output_reg); } -void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp) +void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = dp_to_i915(intel_dp); u8 tmp; @@ -3875,8 +3876,8 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp) drm_dbg_kms(&i915->drm, "Failed to set protocol converter HDMI mode to %s\n", enableddisabled(intel_dp->has_hdmi_sink)); - tmp = intel_dp->dfp.ycbcr_444_to_420 ? - DP_CONVERSION_TO_YCBCR420_ENABLE : 0; + tmp = crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 && + intel_dp->dfp.ycbcr_444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0; if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_PROTOCOL_CONVERTER_CONTROL_1, tmp) != 1) @@ -3930,7 +3931,7 @@ static void intel_enable_dp(struct intel_atomic_state *state, } intel_dp_set_power(intel_dp, DP_SET_POWER_D0); - intel_dp_configure_protocol_converter(intel_dp); + intel_dp_configure_protocol_converter(intel_dp, pipe_config); intel_dp_start_link_train(intel_dp); intel_dp_stop_link_train(intel_dp); diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 9aa8d5a590f9..2dd934182471 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -51,7 +51,8 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, int intel_dp_retrain_link(struct intel_encoder *encoder, struct drm_modeset_acquire_ctx *ctx); void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode); -void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp); +void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state); void intel_dp_sink_set_decompression_state(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state, bool enable);