diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 186 |
1 files changed, 80 insertions, 106 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c index 3e8ac303bd52..25d7b7c6681c 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c @@ -104,84 +104,39 @@ void dcn20_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr, { int i; + clk_mgr->dccg->ref_dppclk = clk_mgr->base.clks.dppclk_khz; for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { int dpp_inst, dppclk_khz; - if (!context->res_ctx.pipe_ctx[i].plane_state) - continue; - - dpp_inst = context->res_ctx.pipe_ctx[i].plane_res.dpp->inst; + /* Loop index will match dpp->inst if resource exists, + * and we want to avoid dependency on dpp object + */ + dpp_inst = i; dppclk_khz = context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz; + clk_mgr->dccg->funcs->update_dpp_dto( - clk_mgr->dccg, dpp_inst, dppclk_khz, false); + clk_mgr->dccg, dpp_inst, dppclk_khz); } } -static void update_global_dpp_clk(struct clk_mgr_internal *clk_mgr, unsigned int khz) +void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr) { int dpp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR - * clk_mgr->dentist_vco_freq_khz / khz; - - uint32_t dppclk_wdivider = dentist_get_did_from_divider(dpp_divider); - - REG_UPDATE(DENTIST_DISPCLK_CNTL, - DENTIST_DPPCLK_WDIVIDER, dppclk_wdivider); - REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DPPCLK_CHG_DONE, 1, 5, 100); -} - -static void update_display_clk(struct clk_mgr_internal *clk_mgr, unsigned int khz) -{ + * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dppclk_khz; int disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR - * clk_mgr->dentist_vco_freq_khz / khz; + * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dispclk_khz; + uint32_t dppclk_wdivider = dentist_get_did_from_divider(dpp_divider); uint32_t dispclk_wdivider = dentist_get_did_from_divider(disp_divider); REG_UPDATE(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, dispclk_wdivider); +// REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 5, 100); + REG_UPDATE(DENTIST_DISPCLK_CNTL, + DENTIST_DPPCLK_WDIVIDER, dppclk_wdivider); + REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DPPCLK_CHG_DONE, 1, 5, 100); } -static void request_voltage_and_program_disp_clk(struct clk_mgr *clk_mgr_base, unsigned int khz) -{ - struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); - struct dc *dc = clk_mgr_base->ctx->dc; - struct pp_smu_funcs_nv *pp_smu = NULL; - bool going_up = clk_mgr->base.clks.dispclk_khz < khz; - - if (dc->res_pool->pp_smu) - pp_smu = &dc->res_pool->pp_smu->nv_funcs; - - clk_mgr->base.clks.dispclk_khz = khz; - - if (going_up && pp_smu && pp_smu->set_voltage_by_freq) - pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_DISPCLK, clk_mgr_base->clks.dispclk_khz / 1000); - - update_display_clk(clk_mgr, khz); - - if (!going_up && pp_smu && pp_smu->set_voltage_by_freq) - pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_DISPCLK, clk_mgr_base->clks.dispclk_khz / 1000); -} - -static void request_voltage_and_program_global_dpp_clk(struct clk_mgr *clk_mgr_base, unsigned int khz) -{ - struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); - struct dc *dc = clk_mgr_base->ctx->dc; - struct pp_smu_funcs_nv *pp_smu = NULL; - bool going_up = clk_mgr->base.clks.dppclk_khz < khz; - - if (dc->res_pool->pp_smu) - pp_smu = &dc->res_pool->pp_smu->nv_funcs; - - clk_mgr->base.clks.dppclk_khz = khz; - clk_mgr->dccg->ref_dppclk = khz; - - if (going_up && pp_smu && pp_smu->set_voltage_by_freq) - pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_PIXELCLK, clk_mgr_base->clks.dppclk_khz / 1000); - - update_global_dpp_clk(clk_mgr, khz); - - if (!going_up && pp_smu && pp_smu->set_voltage_by_freq) - pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_PIXELCLK, clk_mgr_base->clks.dppclk_khz / 1000); -} void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, struct dc_state *context, @@ -192,11 +147,12 @@ void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, struct dc *dc = clk_mgr_base->ctx->dc; struct pp_smu_funcs_nv *pp_smu = NULL; int display_count; + bool update_dppclk = false; bool update_dispclk = false; bool enter_display_off = false; + bool dpp_clock_lowered = false; struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu; bool force_reset = false; - int i; if (dc->work_arounds.skip_clock_update) return; @@ -251,12 +207,10 @@ void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, if (should_update_pstate_support(safe_to_lower, new_clocks->p_state_change_support, clk_mgr_base->clks.p_state_change_support)) { clk_mgr_base->clks.prev_p_state_change_support = clk_mgr_base->clks.p_state_change_support; - clk_mgr_base->clks.p_state_change_support = new_clocks->p_state_change_support; if (pp_smu && pp_smu->set_pstate_handshake_support) pp_smu->set_pstate_handshake_support(&pp_smu->pp_smu, clk_mgr_base->clks.p_state_change_support); } - clk_mgr_base->clks.prev_p_state_change_support = clk_mgr_base->clks.p_state_change_support; if (should_set_clock(safe_to_lower, new_clocks->dramclk_khz, clk_mgr_base->clks.dramclk_khz)) { clk_mgr_base->clks.dramclk_khz = new_clocks->dramclk_khz; @@ -264,50 +218,40 @@ void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, pp_smu->set_hard_min_uclk_by_freq(&pp_smu->pp_smu, clk_mgr_base->clks.dramclk_khz / 1000); } - if (dc->config.forced_clocks == false) { - // First update display clock - if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) - request_voltage_and_program_disp_clk(clk_mgr_base, new_clocks->dispclk_khz); - - // Updating DPP clock requires some more logic - if (!safe_to_lower) { - // For pre-programming, we need to make sure any DPP clock that will go up has to go up + if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) { + if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz) + dpp_clock_lowered = true; + clk_mgr->base.clks.dppclk_khz = new_clocks->dppclk_khz; - // First raise the global reference if needed - if (new_clocks->dppclk_khz > clk_mgr_base->clks.dppclk_khz) - request_voltage_and_program_global_dpp_clk(clk_mgr_base, new_clocks->dppclk_khz); + if (pp_smu && pp_smu->set_voltage_by_freq) + pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_PIXELCLK, clk_mgr_base->clks.dppclk_khz / 1000); - // Then raise any dividers that need raising - for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { - int dpp_inst, dppclk_khz; + update_dppclk = true; + } - if (!context->res_ctx.pipe_ctx[i].plane_state) - continue; + if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) { + clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz; + if (pp_smu && pp_smu->set_voltage_by_freq) + pp_smu->set_voltage_by_freq(&pp_smu->pp_smu, PP_SMU_NV_DISPCLK, clk_mgr_base->clks.dispclk_khz / 1000); - dpp_inst = context->res_ctx.pipe_ctx[i].plane_res.dpp->inst; - dppclk_khz = context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz; + update_dispclk = true; + } - clk_mgr->dccg->funcs->update_dpp_dto(clk_mgr->dccg, dpp_inst, dppclk_khz, true); - } + if (dc->config.forced_clocks == false || (force_reset && safe_to_lower)) { + if (dpp_clock_lowered) { + // if clock is being lowered, increase DTO before lowering refclk + dcn20_update_clocks_update_dpp_dto(clk_mgr, context); + dcn20_update_clocks_update_dentist(clk_mgr); } else { - // For post-programming, we can lower ref clk if needed, and unconditionally set all the DTOs - - if (new_clocks->dppclk_khz < clk_mgr_base->clks.dppclk_khz) - request_voltage_and_program_global_dpp_clk(clk_mgr_base, new_clocks->dppclk_khz); - - for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { - int dpp_inst, dppclk_khz; - - if (!context->res_ctx.pipe_ctx[i].plane_state) - continue; - - dpp_inst = context->res_ctx.pipe_ctx[i].plane_res.dpp->inst; - dppclk_khz = context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz; - - clk_mgr->dccg->funcs->update_dpp_dto(clk_mgr->dccg, dpp_inst, dppclk_khz, false); - } + // if clock is being raised, increase refclk before lowering DTO + if (update_dppclk || update_dispclk) + dcn20_update_clocks_update_dentist(clk_mgr); + // always update dtos unless clock is lowered and not safe to lower + if (new_clocks->dppclk_khz >= dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz) + dcn20_update_clocks_update_dpp_dto(clk_mgr, context); } } + if (update_dispclk && dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) { /*update dmcu for wait_loop count*/ @@ -320,6 +264,8 @@ void dcn2_update_clocks_fpga(struct clk_mgr *clk_mgr, struct dc_state *context, bool safe_to_lower) { + struct clk_mgr_internal *clk_mgr_int = TO_CLK_MGR_INTERNAL(clk_mgr); + struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk; /* Min fclk = 1.2GHz since all the extra scemi logic seems to run off of it */ int fclk_adj = new_clocks->fclk_khz > 1200000 ? new_clocks->fclk_khz : 1200000; @@ -357,14 +303,18 @@ void dcn2_update_clocks_fpga(struct clk_mgr *clk_mgr, clk_mgr->clks.dispclk_khz = new_clocks->dispclk_khz; } - /* Both fclk and dppclk ref are run on the same scemi clock so we - * need to keep the same value for both + /* Both fclk and ref_dppclk run on the same scemi clock. + * So take the higher value since the DPP DTO is typically programmed + * such that max dppclk is 1:1 with ref_dppclk. */ if (clk_mgr->clks.fclk_khz > clk_mgr->clks.dppclk_khz) clk_mgr->clks.dppclk_khz = clk_mgr->clks.fclk_khz; if (clk_mgr->clks.dppclk_khz > clk_mgr->clks.fclk_khz) clk_mgr->clks.fclk_khz = clk_mgr->clks.dppclk_khz; + // Both fclk and ref_dppclk run on the same scemi clock. + clk_mgr_int->dccg->ref_dppclk = clk_mgr->clks.fclk_khz; + dm_set_dcn_clocks(clk_mgr->ctx, &clk_mgr->clks); } @@ -409,12 +359,36 @@ void dcn2_get_clock(struct clk_mgr *clk_mgr, } } +static bool dcn2_are_clock_states_equal(struct dc_clocks *a, + struct dc_clocks *b) +{ + if (a->dispclk_khz != b->dispclk_khz) + return false; + else if (a->dppclk_khz != b->dppclk_khz) + return false; + else if (a->dcfclk_khz != b->dcfclk_khz) + return false; + else if (a->socclk_khz != b->socclk_khz) + return false; + else if (a->dcfclk_deep_sleep_khz != b->dcfclk_deep_sleep_khz) + return false; + else if (a->phyclk_khz != b->phyclk_khz) + return false; + else if (a->dramclk_khz != b->dramclk_khz) + return false; + else if (a->p_state_change_support != b->p_state_change_support) + return false; + + return true; +} + static struct clk_mgr_funcs dcn2_funcs = { .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz, .update_clocks = dcn2_update_clocks, .init_clocks = dcn2_init_clocks, .enable_pme_wa = dcn2_enable_pme_wa, .get_clock = dcn2_get_clock, + .are_clock_states_equal = dcn2_are_clock_states_equal, }; @@ -442,7 +416,7 @@ void dcn20_clk_mgr_construct( if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) { dcn2_funcs.update_clocks = dcn2_update_clocks_fpga; - clk_mgr->dentist_vco_freq_khz = 3850000; + clk_mgr->base.dentist_vco_freq_khz = 3850000; } else { /* DFS Slice 2 should be used for DPREFCLK */ @@ -466,15 +440,15 @@ void dcn20_clk_mgr_construct( pll_req = dc_fixpt_mul_int(pll_req, 100000); /* integer part is now VCO frequency in kHz */ - clk_mgr->dentist_vco_freq_khz = dc_fixpt_floor(pll_req); + clk_mgr->base.dentist_vco_freq_khz = dc_fixpt_floor(pll_req); /* in case we don't get a value from the register, use default */ - if (clk_mgr->dentist_vco_freq_khz == 0) - clk_mgr->dentist_vco_freq_khz = 3850000; + if (clk_mgr->base.dentist_vco_freq_khz == 0) + clk_mgr->base.dentist_vco_freq_khz = 3850000; /* Calculate the DPREFCLK in kHz.*/ clk_mgr->base.dprefclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR - * clk_mgr->dentist_vco_freq_khz) / target_div; + * clk_mgr->base.dentist_vco_freq_khz) / target_div; } //Integrated_info table does not exist on dGPU projects so should not be referenced //anywhere in code for dGPUs. |