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Wed, 6 Nov 2024 09:04:59 -0600 Received: from jzuo-linux.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Wed, 6 Nov 2024 09:04:59 -0600 From: Fangzhi Zuo To: , , , , , , , CC: , , Fangzhi Zuo Subject: [PATCH v3 2/2] drm/display/dsc: MST DSC Interface Change Date: Wed, 6 Nov 2024 10:03:13 -0500 Message-ID: <20241106150444.424579-3-Jerry.Zuo@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241106150444.424579-1-Jerry.Zuo@amd.com> References: <20241106150444.424579-1-Jerry.Zuo@amd.com> MIME-Version: 1.0 Received-SPF: None (SATLEXMB05.amd.com: Jerry.Zuo@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9CD:EE_|BY5PR12MB4305:EE_ X-MS-Office365-Filtering-Correlation-Id: c1955e51-6509-482d-510b-08dcfe7462e0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|376014|82310400026|1800799024; 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CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB03.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(376014)(82310400026)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Nov 2024 15:05:00.6578 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c1955e51-6509-482d-510b-08dcfe7462e0 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9CD.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4305 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" [why] Starting from dp2 where dsc passthrough is introduced, it is required to identify the dsc passthrough aux, apart from dsc decompression aux. Existing drm_dp_mst_port function that returns dsc_aux alone is not sufficient. [how] 1. Interface change in drm_dp_mst_dsc_aux_for_port, and dependency changes for each vendor. 2. Rename passthrough_aux with dsc_passthrough_aux to align with the name of dsc_aux. Signed-off-by: Fangzhi Zuo Signed-off-by: Wayne Lin --- .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 2 +- .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 20 +++++------ .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 28 +++++++-------- drivers/gpu/drm/display/drm_dp_mst_topology.c | 34 +++++++++---------- drivers/gpu/drm/i915/display/intel_dp.c | 2 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 3 +- include/drm/display/drm_dp_mst_helper.h | 6 ++-- 7 files changed, 47 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 6a97bb2d9160..6388cae166b1 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -1370,7 +1370,7 @@ static int dp_dsc_fec_support_show(struct seq_file *m, void *data) * enable DSC on the sink device or on MST branch * its connected to. */ - if (aconnector->dsc_aux) { + if (aconnector->mst_output_port->dsc_aux) { is_fec_supported = true; is_dsc_supported = true; } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index b0fea0856866..94ff77c8fd15 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -820,20 +820,20 @@ bool dm_helpers_dp_write_dsc_enable( uint8_t ret = 0; if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { - if (!aconnector->dsc_aux) + if (!aconnector->mst_output_port->dsc_aux) return false; // apply w/a to synaptics if (needs_dsc_aux_workaround(aconnector->dc_link) && (aconnector->mst_downstream_port_present.byte & 0x7) != 0x3) return write_dsc_enable_synaptics_non_virtual_dpcd_mst( - aconnector->dsc_aux, stream, enable_dsc); + aconnector->mst_output_port->dsc_aux, stream, enable_dsc); port = aconnector->mst_output_port; if (enable) { - if (port->passthrough_aux) { - ret = drm_dp_dpcd_write(port->passthrough_aux, + if (port->dsc_passthrough_aux) { + ret = drm_dp_dpcd_write(port->dsc_passthrough_aux, DP_DSC_ENABLE, &enable_passthrough, 1); drm_dbg_dp(dev, @@ -841,24 +841,24 @@ bool dm_helpers_dp_write_dsc_enable( ret); } - ret = drm_dp_dpcd_write(aconnector->dsc_aux, + ret = drm_dp_dpcd_write(aconnector->mst_output_port->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1); drm_dbg_dp(dev, "MST_DSC Sent DSC decoding enable to %s port, ret = %u\n", - (port->passthrough_aux) ? "remote RX" : + (port->dsc_passthrough_aux) ? "remote RX" : "virtual dpcd", ret); } else { - ret = drm_dp_dpcd_write(aconnector->dsc_aux, + ret = drm_dp_dpcd_write(aconnector->mst_output_port->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1); drm_dbg_dp(dev, "MST_DSC Sent DSC decoding disable to %s port, ret = %u\n", - (port->passthrough_aux) ? "remote RX" : + (port->dsc_passthrough_aux) ? "remote RX" : "virtual dpcd", ret); - if (port->passthrough_aux) { - ret = drm_dp_dpcd_write(port->passthrough_aux, + if (port->dsc_passthrough_aux) { + ret = drm_dp_dpcd_write(port->dsc_passthrough_aux, DP_DSC_ENABLE, &enable_passthrough, 1); drm_dbg_dp(dev, diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 6e4359490613..a73b14fac07f 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -183,8 +183,8 @@ amdgpu_dm_mst_connector_early_unregister(struct drm_connector *connector) dc_sink_release(dc_sink); aconnector->dc_sink = NULL; aconnector->drm_edid = NULL; - aconnector->dsc_aux = NULL; - port->passthrough_aux = NULL; + aconnector->mst_output_port->dsc_aux = NULL; + aconnector->mst_output_port->dsc_passthrough_aux = NULL; } aconnector->mst_status = MST_STATUS_DEFAULT; @@ -237,7 +237,7 @@ static bool validate_dsc_caps_on_connector(struct amdgpu_dm_connector *aconnecto u8 dsc_branch_dec_caps_raw[3] = { 0 }; // DSC branch decoder caps 0xA0 ~ 0xA2 u8 *dsc_branch_dec_caps = NULL; - aconnector->dsc_aux = drm_dp_mst_dsc_aux_for_port(port); + drm_dp_mst_dsc_aux_for_port(port); /* * drm_dp_mst_dsc_aux_for_port() will return NULL for certain configs @@ -250,19 +250,19 @@ static bool validate_dsc_caps_on_connector(struct amdgpu_dm_connector *aconnecto */ if (!aconnector->dsc_aux && !port->parent->port_parent && needs_dsc_aux_workaround(aconnector->dc_link)) - aconnector->dsc_aux = &aconnector->mst_root->dm_dp_aux.aux; + aconnector->mst_output_port->dsc_aux = &aconnector->mst_root->dm_dp_aux.aux; /* synaptics cascaded MST hub case */ if (is_synaptics_cascaded_panamera(aconnector->dc_link, port)) - aconnector->dsc_aux = port->mgr->aux; + aconnector->mst_output_port->dsc_aux = port->mgr->aux; - if (!aconnector->dsc_aux) + if (!aconnector->mst_output_port->dsc_aux) return false; - if (drm_dp_dpcd_read(aconnector->dsc_aux, DP_DSC_SUPPORT, dsc_caps, 16) < 0) + if (drm_dp_dpcd_read(aconnector->mst_output_port->dsc_aux, DP_DSC_SUPPORT, dsc_caps, 16) < 0) return false; - if (drm_dp_dpcd_read(aconnector->dsc_aux, + if (drm_dp_dpcd_read(aconnector->mst_output_port->dsc_aux, DP_DSC_BRANCH_OVERALL_THROUGHPUT_0, dsc_branch_dec_caps_raw, 3) == 3) dsc_branch_dec_caps = dsc_branch_dec_caps_raw; @@ -279,10 +279,10 @@ static bool retrieve_downstream_port_device(struct amdgpu_dm_connector *aconnect { union dp_downstream_port_present ds_port_present; - if (!aconnector->dsc_aux) + if (!aconnector->mst_output_port->dsc_aux) return false; - if (drm_dp_dpcd_read(aconnector->dsc_aux, DP_DOWNSTREAMPORT_PRESENT, &ds_port_present, 1) < 0) { + if (drm_dp_dpcd_read(aconnector->mst_output_port->dsc_aux, DP_DOWNSTREAMPORT_PRESENT, &ds_port_present, 1) < 0) { DRM_INFO("Failed to read downstream_port_present 0x05 from DFP of branch device\n"); return false; } @@ -505,8 +505,8 @@ dm_dp_mst_detect(struct drm_connector *connector, dc_sink_release(aconnector->dc_sink); aconnector->dc_sink = NULL; aconnector->drm_edid = NULL; - aconnector->dsc_aux = NULL; - port->passthrough_aux = NULL; + aconnector->mst_output_port->dsc_aux = NULL; + aconnector->mst_output_port->dsc_passthrough_aux = NULL; amdgpu_dm_set_mst_status(&aconnector->mst_status, MST_REMOTE_EDID | MST_ALLOCATE_NEW_PAYLOAD | MST_CLEAR_ALLOCATED_PAYLOAD, @@ -1802,13 +1802,13 @@ enum dc_status dm_dp_mst_is_port_support_mode( } /*DSC necessary case*/ - if (!aconnector->dsc_aux) + if (!aconnector->mst_output_port->dsc_aux) return DC_FAIL_BANDWIDTH_VALIDATE; if (is_dsc_common_config_possible(stream, &bw_range)) { /*capable of dsc passthough. dsc bitstream along the entire path*/ - if (aconnector->mst_output_port->passthrough_aux) { + if (aconnector->mst_output_port->dsc_passthrough_aux) { if (bw_range.min_kbps > end_to_end_bw_in_kbps) { DRM_DEBUG_DRIVER("MST_DSC dsc passthrough and decode at endpoint" "Max dsc compression bw can't fit into end-to-end bw\n"); diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index a4551c17a07f..483b623961e7 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -2259,7 +2259,7 @@ void drm_dp_mst_connector_early_unregister(struct drm_connector *connector, port->aux.name, connector->kdev->kobj.name); drm_dp_aux_unregister_devnode(&port->aux); port->dsc_aux = NULL; - port->passthrough_aux = NULL; + port->dsc_passthrough_aux = NULL; } EXPORT_SYMBOL(drm_dp_mst_connector_early_unregister); @@ -5447,7 +5447,8 @@ int drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm if (!crtc) continue; - if (!drm_dp_mst_dsc_aux_for_port(pos->port)) + drm_dp_mst_dsc_aux_for_port(pos->port); + if (!pos->port->dsc_aux) continue; crtc_state = drm_atomic_get_crtc_state(mst_state->base.state, crtc); @@ -6019,16 +6020,13 @@ EXPORT_SYMBOL(drm_dp_mst_aux_for_parent); * Depending on the situation, DSC may be enabled via the endpoint aux, * the immediately upstream aux, or the connector's physical aux. * - * This is both the correct aux to read DSC_CAPABILITY and the - * correct aux to write DSC_ENABLED. - * - * This operation can be expensive (up to four aux reads), so - * the caller should cache the return. - * * Returns: - * NULL if DSC cannot be enabled on this port, otherwise the aux device + * port->dsc_aux - point for dsc decompression + * null if dsc decompression point not found + * port->dsc_passthrough_aux - point for dsc passthrough + * null no dsc passthrough support found */ -struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) +void drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) { struct drm_dp_mst_topology_mgr *mgr = port->mgr; struct drm_dp_mst_port *immediate_upstream_port = NULL; @@ -6041,17 +6039,17 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) u8 fec_cap; if (!port) - return NULL; + return; port->dsc_aux = NULL; - port->passthrough_aux = NULL; + port->dsc_passthrough_aux = NULL; /* Policy start */ if (!drm_dp_mst_is_end_device(port->pdt, port->mcs)) { drm_err(mgr->dev, "MST_DSC Can't determine dsc aux for port %p which is not connected to end device\n", port); - return NULL; + return; } if (port->parent->port_parent) @@ -6079,12 +6077,12 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) goto out_dsc_fail; } - /* Consider passthrough as the first option for dsc_aux/passthrough_aux */ + /* Consider passthrough as the first option for dsc_aux/dsc_passthrough_aux */ if (endpoint_dsc & DP_DSC_DECOMPRESSION_IS_SUPPORTED && upstream_dsc & DP_DSC_PASSTHROUGH_IS_SUPPORTED) { dsc_port = port; port->dsc_aux = &port->aux; - port->passthrough_aux = upstream_aux; + port->dsc_passthrough_aux = upstream_aux; drm_info(mgr->dev, "MST_DSC dsc passthrough to endpoint\n"); } @@ -6147,11 +6145,11 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port) goto out_dsc_fail; } - return port->dsc_aux; + return; out_dsc_fail: port->dsc_aux = NULL; - port->passthrough_aux = NULL; - return NULL; + port->dsc_passthrough_aux = NULL; + return; } EXPORT_SYMBOL(drm_dp_mst_dsc_aux_for_port); diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index fbb096be02ad..139586a75c70 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -3262,7 +3262,7 @@ intel_dp_sink_set_dsc_passthrough(const struct intel_connector *connector, { struct drm_i915_private *i915 = to_i915(connector->base.dev); struct drm_dp_aux *aux = connector->port ? - connector->port->passthrough_aux : NULL; + connector->port->dsc_passthrough_aux : NULL; if (!aux) return; diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 7be8fb047b6c..e4e137b1df9f 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -1721,7 +1721,8 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo intel_dp_init_modeset_retry_work(intel_connector); - intel_connector->dp.dsc_decompression_aux = drm_dp_mst_dsc_aux_for_port(port); + drm_dp_mst_dsc_aux_for_port(port); + intel_connector->dp.dsc_decompression_aux = port->dsc_aux; intel_dp_mst_read_decompression_port_dsc_caps(intel_dp, intel_connector); intel_connector->dp.dsc_hblank_expansion_quirk = detect_dsc_hblank_expansion_quirk(intel_connector); diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 672e8f6b5655..630ecf872e68 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -82,7 +82,7 @@ struct drm_dp_mst_branch; * by &drm_dp_mst_topology_mgr.base.lock. * @dsc_aux: aux to which DSC decompression request should be sent, * only set if DSC decompression is possible. - * @passthrough_aux: parent aux to which DSC pass-through requests should be + * @dsc_passthrough_aux: parent aux to which DSC pass-through requests should be * sent, only set if DSC pass-through is possible. * @parent: branch device parent of this port * @connector: DRM connector this port is connected to. Protected by @@ -138,7 +138,7 @@ struct drm_dp_mst_port { struct drm_dp_mst_branch *mstb; struct drm_dp_aux aux; /* i2c bus for this port? */ struct drm_dp_aux *dsc_aux; - struct drm_dp_aux *passthrough_aux; + struct drm_dp_aux *dsc_passthrough_aux; struct drm_dp_mst_branch *parent; struct drm_connector *connector; @@ -959,7 +959,7 @@ bool drm_dp_mst_port_is_logical(struct drm_dp_mst_port *port) } struct drm_dp_aux *drm_dp_mst_aux_for_parent(struct drm_dp_mst_port *port); -struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port); +void drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port); static inline struct drm_dp_mst_topology_state * to_drm_dp_mst_topology_state(struct drm_private_state *state)