From: Manasi Navare Date: Fri, 14 Feb 2020 11:41:25 +0000 (-0800) Subject: drm/i915/dp: Compute port sync crtc states post compute_config() X-Git-Tag: baikal/mips/sdk5.9~13997^2~18^2~49 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=8cc3b8b3b0aff32e21799144685e6d50f6ad25d9;p=kernel.git drm/i915/dp: Compute port sync crtc states post compute_config() This patch pushes out the computation of master and slave transcoders in crtc states after encoder's compute_config hook. This ensures that the assigned master slave crtcs have exact same mode and timings which is a requirement for Port sync mode to be enabled. v3: * Make crtc_state const, remove crtc state NULL init (Ville) v2: * Correct indentation * Rename to intel_ddi_port_sync_transcoders (Ville) * remove unwanted debug (Ville) Suggested-by: Ville Syrjälä Cc: Ville Syrjälä Signed-off-by: Manasi Navare Reviewed-by: Ville Syrjälä Signed-off-by: Uma Shankar Link: https://patchwork.freedesktop.org/patch/msgid/20200214114126.13192-2-manasi.d.navare@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index a1fd8fd67c855..ff292dfe2dd3b 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4456,6 +4456,112 @@ static int intel_ddi_compute_config(struct intel_encoder *encoder, return 0; } +static bool mode_equal(const struct drm_display_mode *mode1, + const struct drm_display_mode *mode2) +{ + return drm_mode_match(mode1, mode2, + DRM_MODE_MATCH_TIMINGS | + DRM_MODE_MATCH_FLAGS | + DRM_MODE_MATCH_3D_FLAGS) && + mode1->clock == mode2->clock; /* we want an exact match */ +} + +static bool m_n_equal(const struct intel_link_m_n *m_n_1, + const struct intel_link_m_n *m_n_2) +{ + return m_n_1->tu == m_n_2->tu && + m_n_1->gmch_m == m_n_2->gmch_m && + m_n_1->gmch_n == m_n_2->gmch_n && + m_n_1->link_m == m_n_2->link_m && + m_n_1->link_n == m_n_2->link_n; +} + +static bool crtcs_port_sync_compatible(const struct intel_crtc_state *crtc_state1, + const struct intel_crtc_state *crtc_state2) +{ + return crtc_state1->hw.active && crtc_state2->hw.active && + crtc_state1->output_types == crtc_state2->output_types && + crtc_state1->output_format == crtc_state2->output_format && + crtc_state1->lane_count == crtc_state2->lane_count && + crtc_state1->port_clock == crtc_state2->port_clock && + mode_equal(&crtc_state1->hw.adjusted_mode, + &crtc_state2->hw.adjusted_mode) && + m_n_equal(&crtc_state1->dp_m_n, &crtc_state2->dp_m_n); +} + +static u8 +intel_ddi_port_sync_transcoders(const struct intel_crtc_state *ref_crtc_state, + int tile_group_id) +{ + struct drm_connector *connector; + const struct drm_connector_state *conn_state; + struct drm_i915_private *dev_priv = to_i915(ref_crtc_state->uapi.crtc->dev); + struct intel_atomic_state *state = + to_intel_atomic_state(ref_crtc_state->uapi.state); + u8 transcoders = 0; + int i; + + if (INTEL_GEN(dev_priv) < 11) + return 0; + + if (!intel_crtc_has_type(ref_crtc_state, INTEL_OUTPUT_DP)) + return 0; + + for_each_new_connector_in_state(&state->base, connector, conn_state, i) { + struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc); + const struct intel_crtc_state *crtc_state; + + if (!crtc) + continue; + + if (!connector->has_tile || + connector->tile_group->id != + tile_group_id) + continue; + crtc_state = intel_atomic_get_new_crtc_state(state, + crtc); + if (!crtcs_port_sync_compatible(ref_crtc_state, + crtc_state)) + continue; + transcoders |= BIT(crtc_state->cpu_transcoder); + } + + return transcoders; +} + +static int intel_ddi_compute_config_late(struct intel_encoder *encoder, + struct intel_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct drm_connector *connector = conn_state->connector; + u8 port_sync_transcoders = 0; + + DRM_DEBUG_KMS("[ENCODER:%d:%s] [CRTC:%d:%s]", + encoder->base.base.id, encoder->base.name, + crtc_state->uapi.crtc->base.id, crtc_state->uapi.crtc->name); + + if (connector->has_tile) + port_sync_transcoders = intel_ddi_port_sync_transcoders(crtc_state, + connector->tile_group->id); + + /* + * EDP Transcoders cannot be ensalved + * make them a master always when present + */ + if (port_sync_transcoders & BIT(TRANSCODER_EDP)) + crtc_state->master_transcoder = TRANSCODER_EDP; + else + crtc_state->master_transcoder = ffs(port_sync_transcoders) - 1; + + if (crtc_state->master_transcoder == crtc_state->cpu_transcoder) { + crtc_state->master_transcoder = INVALID_TRANSCODER; + crtc_state->sync_mode_slaves_mask = + port_sync_transcoders & ~BIT(crtc_state->cpu_transcoder); + } + + return 0; +} + static void intel_ddi_encoder_destroy(struct drm_encoder *encoder) { struct intel_digital_port *dig_port = enc_to_dig_port(to_intel_encoder(encoder)); @@ -4765,6 +4871,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port) encoder->hotplug = intel_ddi_hotplug; encoder->compute_output_type = intel_ddi_compute_output_type; encoder->compute_config = intel_ddi_compute_config; + encoder->compute_config_late = intel_ddi_compute_config_late; encoder->enable = intel_enable_ddi; encoder->pre_pll_enable = intel_ddi_pre_pll_enable; encoder->pre_enable = intel_ddi_pre_enable; diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index e21ef3e8e0835..98302f54ef362 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -12589,126 +12589,6 @@ static bool c8_planes_changed(const struct intel_crtc_state *new_crtc_state) return !old_crtc_state->c8_planes != !new_crtc_state->c8_planes; } -static bool -intel_atomic_is_master_connector(struct intel_crtc_state *crtc_state) -{ - struct drm_crtc *crtc = crtc_state->uapi.crtc; - struct drm_atomic_state *state = crtc_state->uapi.state; - struct drm_connector *connector; - struct drm_connector_state *connector_state; - int i; - - for_each_new_connector_in_state(state, connector, connector_state, i) { - if (connector_state->crtc != crtc) - continue; - if (connector->has_tile && - connector->tile_h_loc == connector->num_h_tile - 1 && - connector->tile_v_loc == connector->num_v_tile - 1) - return true; - } - - return false; -} - -static void reset_port_sync_mode_state(struct intel_crtc_state *crtc_state) -{ - crtc_state->master_transcoder = INVALID_TRANSCODER; - crtc_state->sync_mode_slaves_mask = 0; -} - -static int icl_compute_port_sync_crtc_state(struct drm_connector *connector, - struct intel_crtc_state *crtc_state, - int num_tiled_conns) -{ - struct drm_crtc *crtc = crtc_state->uapi.crtc; - struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->uapi.state); - struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); - struct drm_connector *master_connector; - struct drm_connector_list_iter conn_iter; - struct drm_crtc *master_crtc = NULL; - struct drm_crtc_state *master_crtc_state; - struct intel_crtc_state *master_pipe_config; - - if (INTEL_GEN(dev_priv) < 11) - return 0; - - if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP)) - return 0; - - /* - * In case of tiled displays there could be one or more slaves but there is - * only one master. Lets make the CRTC used by the connector corresponding - * to the last horizonal and last vertical tile a master/genlock CRTC. - * All the other CRTCs corresponding to other tiles of the same Tile group - * are the slave CRTCs and hold a pointer to their genlock CRTC. - * If all tiles not present do not make master slave assignments. - */ - if (!connector->has_tile || - crtc_state->hw.mode.hdisplay != connector->tile_h_size || - crtc_state->hw.mode.vdisplay != connector->tile_v_size || - num_tiled_conns < connector->num_h_tile * connector->num_v_tile) { - reset_port_sync_mode_state(crtc_state); - return 0; - } - /* Last Horizontal and last vertical tile connector is a master - * Master's crtc state is already populated in slave for port sync - */ - if (connector->tile_h_loc == connector->num_h_tile - 1 && - connector->tile_v_loc == connector->num_v_tile - 1) - return 0; - - /* Loop through all connectors and configure the Slave crtc_state - * to point to the correct master. - */ - drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter); - drm_for_each_connector_iter(master_connector, &conn_iter) { - struct drm_connector_state *master_conn_state = NULL; - - if (!(master_connector->has_tile && - master_connector->tile_group->id == connector->tile_group->id)) - continue; - if (master_connector->tile_h_loc != master_connector->num_h_tile - 1 || - master_connector->tile_v_loc != master_connector->num_v_tile - 1) - continue; - - master_conn_state = drm_atomic_get_connector_state(&state->base, - master_connector); - if (IS_ERR(master_conn_state)) { - drm_connector_list_iter_end(&conn_iter); - return PTR_ERR(master_conn_state); - } - if (master_conn_state->crtc) { - master_crtc = master_conn_state->crtc; - break; - } - } - drm_connector_list_iter_end(&conn_iter); - - if (!master_crtc) { - drm_dbg_kms(&dev_priv->drm, - "Could not find Master CRTC for Slave CRTC %d\n", - crtc->base.id); - return -EINVAL; - } - - master_crtc_state = drm_atomic_get_crtc_state(&state->base, - master_crtc); - if (IS_ERR(master_crtc_state)) - return PTR_ERR(master_crtc_state); - - master_pipe_config = to_intel_crtc_state(master_crtc_state); - crtc_state->master_transcoder = master_pipe_config->cpu_transcoder; - master_pipe_config->sync_mode_slaves_mask |= - BIT(crtc_state->cpu_transcoder); - drm_dbg_kms(&dev_priv->drm, - "Master Transcoder = %s added for Slave CRTC = %d, slave transcoder bitmask = %d\n", - transcoder_name(crtc_state->master_transcoder), - crtc->base.id, - master_pipe_config->sync_mode_slaves_mask); - - return 0; -} - static u16 hsw_linetime_wm(const struct intel_crtc_state *crtc_state) { const struct drm_display_mode *adjusted_mode = @@ -13359,15 +13239,6 @@ intel_crtc_prepare_cleared_state(struct intel_crtc_state *crtc_state) if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) saved_state->wm = crtc_state->wm; - /* - * Save the slave bitmask which gets filled for master crtc state during - * slave atomic check call. For all other CRTCs reset the port sync variables - * crtc_state->master_transcoder needs to be set to INVALID - */ - reset_port_sync_mode_state(saved_state); - if (intel_atomic_is_master_connector(crtc_state)) - saved_state->sync_mode_slaves_mask = - crtc_state->sync_mode_slaves_mask; memcpy(crtc_state, saved_state, sizeof(*crtc_state)); kfree(saved_state); @@ -13385,8 +13256,7 @@ intel_modeset_pipe_config(struct intel_crtc_state *pipe_config) struct drm_i915_private *i915 = to_i915(pipe_config->uapi.crtc->dev); struct drm_connector *connector; struct drm_connector_state *connector_state; - int base_bpp, ret; - int i, tile_group_id = -1, num_tiled_conns = 0; + int base_bpp, ret, i; bool retry = true; pipe_config->cpu_transcoder = @@ -13458,24 +13328,6 @@ encoder_retry: drm_mode_set_crtcinfo(&pipe_config->hw.adjusted_mode, CRTC_STEREO_DOUBLE); - /* Get tile_group_id of tiled connector */ - for_each_new_connector_in_state(state, connector, connector_state, i) { - if (connector_state->crtc == crtc && - connector->has_tile) { - tile_group_id = connector->tile_group->id; - break; - } - } - - /* Get total number of tiled connectors in state that belong to - * this tile group. - */ - for_each_new_connector_in_state(state, connector, connector_state, i) { - if (connector->has_tile && - connector->tile_group->id == tile_group_id) - num_tiled_conns++; - } - /* Pass our mode to the connectors and the CRTC to give them a chance to * adjust it according to limitations or connector properties, and also * a chance to reject the mode entirely. @@ -13487,15 +13339,6 @@ encoder_retry: if (connector_state->crtc != crtc) continue; - ret = icl_compute_port_sync_crtc_state(connector, pipe_config, - num_tiled_conns); - if (ret) { - drm_dbg_kms(&i915->drm, - "Cannot assign Sync Mode CRTCs: %d\n", - ret); - return ret; - } - ret = encoder->compute_config(encoder, pipe_config, connector_state); if (ret < 0) {