diff options
author | Wesley Chalmers <Wesley.Chalmers@amd.com> | 2019-08-26 15:02:47 -0400 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-03 09:10:51 -0500 |
commit | 799c5b9cb91ca759df65707d2820b5fe1ee5383c (patch) | |
tree | 7479f08f19d1bc0d80ecaf83b4aef536599537a3 /drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20 | |
parent | 6bd0a112ec129615d23aa5d8d3dd0be0243989aa (diff) |
drm/amd/display: Revert fixup DPP programming sequence
[WHY]
This change was made because DTO programming was double-buffered, which
is itself an issue. After deactivating the DTO double buffer, this
change becomes unnecessary.
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 111 |
1 files changed, 36 insertions, 75 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 f1df32664414..559e16983f91 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 @@ -104,6 +104,7 @@ 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; @@ -113,75 +114,28 @@ void dcn20_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr, 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); + 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->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->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, @@ -192,8 +146,10 @@ 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; @@ -250,12 +206,10 @@ 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; @@ -263,28 +217,35 @@ 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); + 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; - // 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 (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); - // 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); + update_dppclk = true; + } - // Then raise any dividers that need raising - dcn20_update_clocks_update_dpp_dto(clk_mgr, context); - } else { - // For post-programming, we can lower ref clk if needed, and unconditionally set all the DTOs + 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); - 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); + update_dispclk = 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 { + // if clock is being raised, increase refclk before lowering DTO + if (update_dppclk || update_dispclk) + dcn20_update_clocks_update_dentist(clk_mgr); + if (update_dppclk) + dcn20_update_clocks_update_dpp_dto(clk_mgr, context); } } if (update_dispclk && |