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[87.205.5.123]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8fc735d185sm264683866b.14.2026.02.16.08.45.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Feb 2026 08:45:54 -0800 (PST) From: =?UTF-8?q?Tomasz=20Paku=C5=82a?= To: alexander.deucher@amd.com, harry.wentland@amd.com, sunpeng.li@amd.com Cc: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, siqueira@igalia.com, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, tomasz.pakula.oficjalny@gmail.com, bernhard.berger@gmail.com, michel.daenzer@mailbox.org, daniel@fooishbar.org Subject: [PATCH v4 27/27] drm/amd/display: Use ALLM properties in amdgpu Date: Mon, 16 Feb 2026 17:45:16 +0100 Message-ID: <20260216164516.36803-28-tomasz.pakula.oficjalny@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260216164516.36803-1-tomasz.pakula.oficjalny@gmail.com> References: <20260216164516.36803-1-tomasz.pakula.oficjalny@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [Why] To enable ALLM when asked for by compositor [How] Attach properties to HDMI sinks, detect support and set allm_capable property, set allm_capable property for amdgpu_dm_connector Signed-off-by: Tomasz PakuĊ‚a --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 54 ++++++++++++++++++- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 3 ++ drivers/gpu/drm/amd/display/dc/core/dc.c | 3 ++ .../gpu/drm/amd/display/dc/core/dc_resource.c | 2 +- drivers/gpu/drm/amd/display/dc/dc_stream.h | 2 + .../display/modules/info_packet/info_packet.c | 4 +- 6 files changed, 64 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 41677c50b3d2..695100c78314 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -8969,6 +8969,7 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm, aconnector->audio_inst = -1; aconnector->pack_sdp_v1_3 = false; aconnector->as_type = ADAPTIVE_SYNC_TYPE_NONE; + aconnector->hdmi_allm_capable = false; memset(&aconnector->vsdb_info, 0, sizeof(aconnector->vsdb_info)); mutex_init(&aconnector->hpd_lock); mutex_init(&aconnector->handle_mst_msg_ready); @@ -9166,6 +9167,10 @@ int amdgpu_dm_initialize_hdmi_connector(struct amdgpu_dm_connector *aconnector) struct drm_device *ddev = aconnector->base.dev; struct device *hdmi_dev = ddev->dev; + /* ALLM */ + drm_connector_attach_allm_capable_property(&aconnector->base); + drm_connector_attach_allm_mode_property(&aconnector->base); + if (amdgpu_dc_debug_mask & DC_DISABLE_HDMI_CEC) { drm_info(ddev, "HDMI-CEC feature masked\n"); return -EINVAL; @@ -10856,6 +10861,31 @@ static int amdgpu_dm_atomic_setup_commit(struct drm_atomic_state *state) return 0; } +static void update_allm_state_on_crtc_stream(struct dm_crtc_state *new_crtc_state, + const struct drm_connector_state *new_conn) +{ + struct mod_freesync_config *config = &new_crtc_state->freesync_config; + struct dc_stream_state *new_stream = new_crtc_state->stream; + bool allm_active = false; + + switch (new_conn->allm_mode) { + case DRM_ALLM_MODE_ENABLED_DYNAMIC: + allm_active = config->state == VRR_STATE_ACTIVE_VARIABLE || + new_stream->content_type == DISPLAY_CONTENT_TYPE_GAME; + break; + + case DRM_ALLM_MODE_ENABLED_FORCED: + allm_active = true; + break; + + case DRM_ALLM_MODE_DISABLED: + default: + allm_active = false; + } + + new_stream->hdmi_allm_active = allm_active; +} + /** * amdgpu_dm_atomic_commit_tail() - AMDgpu DM's commit tail implementation. * @state: The atomic state to commit @@ -10898,12 +10928,14 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) { struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state); struct dm_connector_state *dm_old_con_state = to_dm_connector_state(old_con_state); + struct amdgpu_dm_connector *dm_conn = to_amdgpu_dm_connector(connector); struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc); struct dc_surface_update *dummy_updates; struct dc_stream_update stream_update; struct dc_info_packet hdr_packet; struct dc_stream_status *status = NULL; bool abm_changed, hdr_changed, scaling_changed, output_color_space_changed = false; + bool allm_changed = false; memset(&stream_update, 0, sizeof(stream_update)); @@ -10933,7 +10965,11 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) hdr_changed = !drm_connector_atomic_hdr_metadata_equal(old_con_state, new_con_state); - if (!scaling_changed && !abm_changed && !hdr_changed && !output_color_space_changed) + allm_changed = dm_conn->hdmi_allm_capable && + (new_con_state->allm_mode != old_con_state->allm_mode); + + if (!scaling_changed && !abm_changed && !hdr_changed && + !output_color_space_changed && !allm_changed) continue; stream_update.stream = dm_new_crtc_state->stream; @@ -10963,6 +10999,17 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) stream_update.hdr_static_metadata = &hdr_packet; } + if (allm_changed) { + update_allm_state_on_crtc_stream(dm_new_crtc_state, new_con_state); + mod_build_hf_vsif_infopacket(dm_new_crtc_state->stream, + &dm_new_crtc_state->stream->hfvsif_infopacket); + + stream_update.hdmi_allm_active = + &dm_new_crtc_state->stream->hdmi_allm_active; + stream_update.hfvsif_infopacket = + &dm_new_crtc_state->stream->hfvsif_infopacket; + } + status = dc_stream_get_status(dm_new_crtc_state->stream); if (WARN_ON(!status)) @@ -13478,6 +13525,11 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, if (connector->passive_vrr_capable_property) drm_connector_set_passive_vrr_capable_property(connector, freesync_on_desktop); + + amdgpu_dm_connector->hdmi_allm_capable = connector->display_info.hdmi.allm; + if (connector->allm_capable_property) + drm_connector_set_allm_capable_property( + connector, connector->display_info.hdmi.allm); } void amdgpu_dm_trigger_timing_sync(struct drm_device *dev) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 88ec2b88dcaf..b9d27a483b1e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -847,6 +847,9 @@ struct amdgpu_dm_connector { unsigned int hdmi_hpd_debounce_delay_ms; struct delayed_work hdmi_hpd_debounce_work; struct dc_sink *hdmi_prev_sink; + + /* HDMI ALLM */ + bool hdmi_allm_capable; }; static inline void amdgpu_dm_set_mst_status(uint8_t *status, diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 17ba7af0ddcd..bfaa2fb0cba8 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -3295,6 +3295,9 @@ static void copy_stream_update_to_stream(struct dc *dc, if (update->vrr_active_fixed) stream->vrr_active_fixed = *update->vrr_active_fixed; + if (update->hdmi_allm_active) + stream->hdmi_allm_active = *update->hdmi_allm_active; + if (update->crtc_timing_adjust) { if (stream->adjust.v_total_min != update->crtc_timing_adjust->v_total_min || stream->adjust.v_total_max != update->crtc_timing_adjust->v_total_max || diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 639831295b21..078ca4a7258f 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -4660,7 +4660,7 @@ static void set_avi_info_frame( vic = 0; format = stream->timing.timing_3d_format; /*todo, add 3DStereo support*/ - if (format != TIMING_3D_FORMAT_NONE) { + if (format != TIMING_3D_FORMAT_NONE || stream->hdmi_allm_active) { // Based on HDMI specs hdmi vic needs to be converted to cea vic when 3D is enabled switch (pipe_ctx->stream->timing.hdmi_vic) { case 1: diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h index 9960494007ff..17f891b03416 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_stream.h +++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h @@ -242,6 +242,7 @@ struct dc_stream_state { bool vrr_active_variable; bool freesync_on_desktop; bool vrr_active_fixed; + bool hdmi_allm_active; bool converter_disable_audio; uint8_t qs_bit; @@ -345,6 +346,7 @@ struct dc_stream_update { bool *allow_freesync; bool *vrr_active_variable; bool *vrr_active_fixed; + bool *hdmi_allm_active; struct colorspace_transform *gamut_remap; enum dc_color_space *output_color_space; diff --git a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c index 7e0adb90af39..fcfab7b9e0e2 100644 --- a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c +++ b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c @@ -500,7 +500,7 @@ static bool is_hdmi_vic_mode(const struct dc_stream_state *stream) if (stream->view_format != VIEW_3D_FORMAT_NONE) return false; - if (stream->link->local_sink->edid_caps.allm) + if (stream->hdmi_allm_active) return false; return true; @@ -529,7 +529,7 @@ void mod_build_hf_vsif_infopacket(const struct dc_stream_state *stream, info_packet->valid = false; - allm = stream->link->local_sink->edid_caps.allm; + allm = stream->hdmi_allm_active; format = stream->view_format == VIEW_3D_FORMAT_NONE ? TIMING_3D_FORMAT_NONE : stream->timing.timing_3d_format; -- 2.53.0