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bh=KZudJ7ialawhnjgOcRWYVWvYIbpYEAl6oAIQqQQBXEY=; b=ROXK3J7C/3UTNRKmWQI6ZOyd6wiNiE0i1vduA1ziUHEKmu9EYqmvieWX4ycZBokgYydFbF tuxVOqVhPefm1S09/x2+bI02prGkOGkPX4DDFQynDhMsRZBPiSTsYGLXjnJRprZHHSr5nI 6ddoKuMjwSGQ1UNA3lDRBw90BN+PJzUm/pVR1G8E5QsMS9hvAc8UET2mi3qqHB+lVNLZdU m5+UEkMR257rXY6qrYp279cMFX2JYmm79GHn4yRx3D4XYA4NaJgl8L4cTs2cG/BPiwCSEb xxgongJfAujl5NZP4VNUXgifndtlHffPhNMtk0DZUP39y9FJ0zQWJL8d8QPG8A== Message-ID: <5aaecb8b-08c6-4982-86c8-18ebb4544f4c@bootlin.com> Date: Fri, 19 Sep 2025 14:43:03 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Louis Chauvet Subject: Re: [PATCH RFC v2 04/20] drm/crtc: Add COLOR_PIPELINE property To: =?UTF-8?B?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Haneen Mohammed , Melissa Wen Cc: Alex Hung , wayland-devel@lists.freedesktop.org, harry.wentland@amd.com, leo.liu@amd.com, ville.syrjala@linux.intel.com, pekka.paalanen@collabora.com, contact@emersion.fr, mwen@igalia.com, jadahl@redhat.com, sebastian.wick@redhat.com, shashank.sharma@amd.com, agoins@nvidia.com, joshua@froggi.es, mdaenzer@redhat.com, aleixpol@kde.org, xaver.hugl@gmail.com, victoria@system76.com, uma.shankar@intel.com, quic_naseer@quicinc.com, quic_cbraga@quicinc.com, quic_abhinavk@quicinc.com, marcan@marcan.st, Liviu.Dudau@arm.com, sashamcintosh@google.com, chaitanya.kumar.borah@intel.com, mcanal@igalia.com, kernel@collabora.com, daniels@collabora.com, leandro.ribeiro@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Simona Vetter References: <20250917-mtk-post-blend-color-pipeline-v2-0-ac4471b44758@collabora.com> <20250917-mtk-post-blend-color-pipeline-v2-4-ac4471b44758@collabora.com> Content-Language: en-US, fr Autocrypt: addr=louis.chauvet@bootlin.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250922_011336_084687_FCFC4D12 X-CRM114-Status: GOOD ( 26.87 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Le 18/09/2025 à 02:43, Nícolas F. R. A. Prado a écrit : > Add a COLOR_PIPELINE property to the CRTC to allow userspace to set a > post-blend color pipeline analogously to how pre-blend color pipelines > are set on planes. > > Signed-off-by: Nícolas F. R. A. Prado > --- > drivers/gpu/drm/drm_atomic_uapi.c | 49 +++++++++++++++++++++++++++++++++++---- > drivers/gpu/drm/drm_crtc.c | 33 ++++++++++++++++++++++++++ > include/drm/drm_atomic_uapi.h | 2 ++ > include/drm/drm_crtc.h | 11 +++++++++ > 4 files changed, 91 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c > index b7cc6945864274bedd21dd5b73494f9aae216888..063c142fd9b656e228cfc660d005a3fbb4640d32 100644 > --- a/drivers/gpu/drm/drm_atomic_uapi.c > +++ b/drivers/gpu/drm/drm_atomic_uapi.c > @@ -287,6 +287,33 @@ drm_atomic_set_colorop_for_plane(struct drm_plane_state *plane_state, > } > EXPORT_SYMBOL(drm_atomic_set_colorop_for_plane); > > +/** > + * drm_atomic_set_colorop_for_crtc - set colorop for crtc > + * @crtc_state: atomic state object for the crtc > + * @colorop: colorop to use for the crtc > + * > + * Helper function to select the color pipeline on a crtc by setting > + * it to the first drm_colorop element of the pipeline. > + */ > +void > +drm_atomic_set_colorop_for_crtc(struct drm_crtc_state *crtc_state, > + struct drm_colorop *colorop) > +{ > + struct drm_crtc *crtc = crtc_state->crtc; > + > + if (colorop) > + drm_dbg_atomic(crtc->dev, > + "Set [COLOROP:%d] for [CRTC:%d:%s] state %p\n", > + colorop->base.id, crtc->base.id, crtc->name, > + crtc_state); > + else > + drm_dbg_atomic(crtc->dev, > + "Set [NOCOLOROP] for [CRTC:%d:%s] state %p\n", > + crtc->base.id, crtc->name, crtc_state); > + > + crtc_state->color_pipeline = colorop; > +} > +EXPORT_SYMBOL(drm_atomic_set_colorop_for_crtc); > > /** > * drm_atomic_set_crtc_for_connector - set CRTC for connector > @@ -396,8 +423,8 @@ static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state, > } > > static int drm_atomic_crtc_set_property(struct drm_crtc *crtc, > - struct drm_crtc_state *state, struct drm_property *property, > - uint64_t val) > + struct drm_crtc_state *state, struct drm_file *file_priv, > + struct drm_property *property, uint64_t val) > { > struct drm_device *dev = crtc->dev; > struct drm_mode_config *config = &dev->mode_config; > @@ -406,7 +433,17 @@ static int drm_atomic_crtc_set_property(struct drm_crtc *crtc, > > if (property == config->prop_active) > state->active = val; > - else if (property == config->prop_mode_id) { > + else if (property == crtc->color_pipeline_property) { > + /* find DRM colorop object */ > + struct drm_colorop *colorop = NULL; > + > + colorop = drm_colorop_find(dev, file_priv, val); > + > + if (val && !colorop) > + return -EACCES; > + > + drm_atomic_set_colorop_for_crtc(state, colorop); I don't know if this is needed, but you added a warning/early return for ctm/degamma_lut if file_priv->post_blend_color_pipeline is true. Does it make sense to add this? if (!file_priv->post_blend_color_pipeline) { drm_dbg_atomic(dev, "Setting COLOR_PIPELINE property not permitted without DRM_CLIENT_CAP_POST_BLEND_COLOR_PIPELINE client cap\n"); return -EINVAL; } > + } else if (property == config->prop_mode_id) { > struct drm_property_blob *mode = > drm_property_lookup_blob(dev, val); > ret = drm_atomic_set_mode_prop_for_crtc(state, mode); > @@ -487,6 +524,8 @@ drm_atomic_crtc_get_property(struct drm_crtc *crtc, > *val = 0; > else if (property == crtc->scaling_filter_property) > *val = state->scaling_filter; > + else if (property == crtc->color_pipeline_property) > + *val = (state->color_pipeline) ? state->color_pipeline->base.id : 0; > else if (crtc->funcs->atomic_get_property) > return crtc->funcs->atomic_get_property(crtc, state, property, val); > else { > @@ -1047,6 +1086,8 @@ int drm_atomic_get_property(struct drm_mode_object *obj, > > if (colorop->plane) > WARN_ON(!drm_modeset_is_locked(&colorop->plane->mutex)); > + else if (colorop->crtc) > + WARN_ON(!drm_modeset_is_locked(&colorop->crtc->mutex)); > > ret = drm_atomic_colorop_get_property(colorop, > colorop->state, property, val); > @@ -1204,7 +1245,7 @@ int drm_atomic_set_property(struct drm_atomic_state *state, > } > > ret = drm_atomic_crtc_set_property(crtc, > - crtc_state, prop, prop_value); > + crtc_state, file_priv, prop, prop_value); > break; > } > case DRM_MODE_OBJECT_PLANE: { > diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c > index 94e60cffd29972aa979ac2f1932be7a6a97f3ada..94238163ff1254c721df39c030bc99a31d3bb92a 100644 > --- a/drivers/gpu/drm/drm_crtc.c > +++ b/drivers/gpu/drm/drm_crtc.c > @@ -1003,3 +1003,36 @@ drm_common_create_color_pipeline_property(struct drm_device *dev, struct drm_mod > kfree(all_pipelines); > return prop; > } > + > +/** > + * drm_crtc_create_color_pipeline_property - create a new color pipeline > + * property > + * > + * @crtc: drm CRTC > + * @pipelines: list of pipelines > + * @num_pipelines: number of pipelines > + * > + * Create the COLOR_PIPELINE CRTC property to specify color pipelines on > + * the CRTC. > + * > + * RETURNS: > + * Zero for success or -errno > + */ > +int drm_crtc_create_color_pipeline_property(struct drm_crtc *crtc, > + const struct drm_prop_enum_list *pipelines, > + int num_pipelines) > +{ > + struct drm_property *prop; > + > + prop = drm_common_create_color_pipeline_property(crtc->dev, > + &crtc->base, > + pipelines, > + num_pipelines); > + if (IS_ERR(prop)) > + return PTR_ERR(prop); > + > + crtc->color_pipeline_property = prop; > + > + return 0; > +} > +EXPORT_SYMBOL(drm_crtc_create_color_pipeline_property); > diff --git a/include/drm/drm_atomic_uapi.h b/include/drm/drm_atomic_uapi.h > index 4363155233267b93767c895fa6085544e2277442..4dc191f6f929d73deee9812025c48275a33cf770 100644 > --- a/include/drm/drm_atomic_uapi.h > +++ b/include/drm/drm_atomic_uapi.h > @@ -52,6 +52,8 @@ void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, > struct drm_framebuffer *fb); > void drm_atomic_set_colorop_for_plane(struct drm_plane_state *plane_state, > struct drm_colorop *colorop); > +void drm_atomic_set_colorop_for_crtc(struct drm_crtc_state *crtc_state, > + struct drm_colorop *colorop); > int __must_check > drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, > struct drm_crtc *crtc); > diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h > index 77c0c04a5910a2263923e06cf37535697e20e1c9..df03637ca25abd45e96b5944229297f776fd046d 100644 > --- a/include/drm/drm_crtc.h > +++ b/include/drm/drm_crtc.h > @@ -1096,6 +1096,14 @@ struct drm_crtc { > */ > struct drm_property *scaling_filter_property; > > + /** > + * @color_pipeline_property: > + * > + * Optional "COLOR_PIPELINE" enum property for specifying > + * a color pipeline to use on the CRTC. > + */ > + struct drm_property *color_pipeline_property; > + > /** > * @state: > * > @@ -1331,5 +1339,8 @@ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, > > int drm_crtc_create_scaling_filter_property(struct drm_crtc *crtc, > unsigned int supported_filters); > +int drm_crtc_create_color_pipeline_property(struct drm_crtc *crtc, > + const struct drm_prop_enum_list *pipelines, > + int num_pipelines); > bool drm_crtc_in_clone_mode(struct drm_crtc_state *crtc_state); > #endif /* __DRM_CRTC_H__ */ > -- -- Louis Chauvet, Bootlin Embedded Linux and Kernel engineering https://bootlin.com