diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 81 |
1 files changed, 44 insertions, 37 deletions
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 1a269099f1..b50010ed76 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 @@ -182,6 +182,8 @@ amdgpu_dm_mst_connector_early_unregister(struct drm_connector *connector) dc_sink_release(dc_sink); aconnector->dc_sink = NULL; aconnector->edid = NULL; + aconnector->dsc_aux = NULL; + port->passthrough_aux = NULL; } aconnector->mst_status = MST_STATUS_DEFAULT; @@ -494,6 +496,8 @@ dm_dp_mst_detect(struct drm_connector *connector, dc_sink_release(aconnector->dc_sink); aconnector->dc_sink = NULL; aconnector->edid = NULL; + aconnector->dsc_aux = NULL; + port->passthrough_aux = NULL; amdgpu_dm_set_mst_status(&aconnector->mst_status, MST_REMOTE_EDID | MST_ALLOCATE_NEW_PAYLOAD | MST_CLEAR_ALLOCATED_PAYLOAD, @@ -794,25 +798,12 @@ struct dsc_mst_fairness_params { struct amdgpu_dm_connector *aconnector; }; -static uint16_t get_fec_overhead_multiplier(struct dc_link *dc_link) -{ - u8 link_coding_cap; - uint16_t fec_overhead_multiplier_x1000 = PBN_FEC_OVERHEAD_MULTIPLIER_8B_10B; - - link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(dc_link); - if (link_coding_cap == DP_128b_132b_ENCODING) - fec_overhead_multiplier_x1000 = PBN_FEC_OVERHEAD_MULTIPLIER_128B_132B; - - return fec_overhead_multiplier_x1000; -} - -static int kbps_to_peak_pbn(int kbps, uint16_t fec_overhead_multiplier_x1000) +static int kbps_to_peak_pbn(int kbps) { u64 peak_kbps = kbps; peak_kbps *= 1006; - peak_kbps *= fec_overhead_multiplier_x1000; - peak_kbps = div_u64(peak_kbps, 1000 * 1000); + peak_kbps = div_u64(peak_kbps, 1000); return (int) DIV64_U64_ROUND_UP(peak_kbps * 64, (54 * 8 * 1000)); } @@ -913,12 +904,11 @@ static int increase_dsc_bpp(struct drm_atomic_state *state, int link_timeslots_used; int fair_pbn_alloc; int ret = 0; - uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link); for (i = 0; i < count; i++) { if (vars[i + k].dsc_enabled) { initial_slack[i] = - kbps_to_peak_pbn(params[i].bw_range.max_kbps, fec_overhead_multiplier_x1000) - vars[i + k].pbn; + kbps_to_peak_pbn(params[i].bw_range.max_kbps) - vars[i + k].pbn; bpp_increased[i] = false; remaining_to_increase += 1; } else { @@ -1014,7 +1004,6 @@ static int try_disable_dsc(struct drm_atomic_state *state, int next_index; int remaining_to_try = 0; int ret; - uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link); for (i = 0; i < count; i++) { if (vars[i + k].dsc_enabled @@ -1044,7 +1033,7 @@ static int try_disable_dsc(struct drm_atomic_state *state, if (next_index == -1) break; - vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps, fec_overhead_multiplier_x1000); + vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps); ret = drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, @@ -1057,7 +1046,8 @@ static int try_disable_dsc(struct drm_atomic_state *state, vars[next_index].dsc_enabled = false; vars[next_index].bpp_x16 = 0; } else { - vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.max_kbps, fec_overhead_multiplier_x1000); + vars[next_index].pbn = kbps_to_peak_pbn( + params[next_index].bw_range.max_kbps); ret = drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, @@ -1086,7 +1076,6 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, int count = 0; int i, k, ret; bool debugfs_overwrite = false; - uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link); memset(params, 0, sizeof(params)); @@ -1151,7 +1140,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, /* Try no compression */ for (i = 0; i < count; i++) { vars[i + k].aconnector = params[i].aconnector; - vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps, fec_overhead_multiplier_x1000); + vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; ret = drm_dp_atomic_find_time_slots(state, params[i].port->mgr, params[i].port, @@ -1170,7 +1159,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, /* Try max compression */ for (i = 0; i < count; i++) { if (params[i].compression_possible && params[i].clock_force_enable != DSC_CLK_FORCE_DISABLE) { - vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.min_kbps, fec_overhead_multiplier_x1000); + vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.min_kbps); vars[i + k].dsc_enabled = true; vars[i + k].bpp_x16 = params[i].bw_range.min_target_bpp_x16; ret = drm_dp_atomic_find_time_slots(state, params[i].port->mgr, @@ -1178,7 +1167,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, if (ret < 0) return ret; } else { - vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps, fec_overhead_multiplier_x1000); + vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; ret = drm_dp_atomic_find_time_slots(state, params[i].port->mgr, @@ -1248,14 +1237,6 @@ static bool is_dsc_need_re_compute( if (!aconnector || !aconnector->dsc_aux) continue; - /* - * check if cached virtual MST DSC caps are available and DSC is supported - * as per specifications in their Virtual DPCD registers. - */ - if (!(aconnector->dc_sink->dsc_caps.dsc_dec_caps.is_dsc_supported || - aconnector->dc_link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_PASSTHROUGH_SUPPORT)) - continue; - stream_on_link[new_stream_on_link_num] = aconnector; new_stream_on_link_num++; @@ -1283,6 +1264,9 @@ static bool is_dsc_need_re_compute( } } + if (new_stream_on_link_num == 0) + return false; + /* check current_state if there stream on link but it is not in * new request state */ @@ -1614,7 +1598,7 @@ enum dc_status dm_dp_mst_is_port_support_mode( struct amdgpu_dm_connector *aconnector, struct dc_stream_state *stream) { - int bpp, pbn, branch_max_throughput_mps = 0; + int pbn, branch_max_throughput_mps = 0; struct dc_link_settings cur_link_settings; unsigned int end_to_end_bw_in_kbps = 0; unsigned int upper_link_bw_in_kbps = 0, down_link_bw_in_kbps = 0; @@ -1664,11 +1648,34 @@ enum dc_status dm_dp_mst_is_port_support_mode( } } } else { - /* check if mode could be supported within full_pbn */ - bpp = convert_dc_color_depth_into_bpc(stream->timing.display_color_depth) * 3; - pbn = drm_dp_calc_pbn_mode(stream->timing.pix_clk_100hz / 10, bpp << 4); - if (pbn > aconnector->mst_output_port->full_pbn) + /* Check if mode could be supported within max slot + * number of current mst link and full_pbn of mst links. + */ + int pbn_div, slot_num, max_slot_num; + enum dc_link_encoding_format link_encoding; + uint32_t stream_kbps = + dc_bandwidth_in_kbps_from_timing(&stream->timing, + dc_link_get_highest_encoding_format(stream->link)); + + pbn = kbps_to_peak_pbn(stream_kbps); + pbn_div = dm_mst_get_pbn_divider(stream->link); + slot_num = DIV_ROUND_UP(pbn, pbn_div); + + link_encoding = dc_link_get_highest_encoding_format(stream->link); + if (link_encoding == DC_LINK_ENCODING_DP_8b_10b) + max_slot_num = 63; + else if (link_encoding == DC_LINK_ENCODING_DP_128b_132b) + max_slot_num = 64; + else { + DRM_DEBUG_DRIVER("Invalid link encoding format\n"); return DC_FAIL_BANDWIDTH_VALIDATE; + } + + if (slot_num > max_slot_num || + pbn > aconnector->mst_output_port->full_pbn) { + DRM_DEBUG_DRIVER("Mode can not be supported within mst links!"); + return DC_FAIL_BANDWIDTH_VALIDATE; + } } /* check is mst dsc output bandwidth branch_overall_throughput_0_mps */ |