diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 97 |
1 files changed, 85 insertions, 12 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c index 61768bf726f8..ea753f8fa175 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c @@ -255,27 +255,60 @@ static void dcn32_update_dppclk_dispclk_freq(struct clk_mgr_internal *clk_mgr, s } } +void dcn32_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr, + struct dc_state *context, bool safe_to_lower) +{ + 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, prev_dppclk_khz; + + dppclk_khz = context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz; + + if (context->res_ctx.pipe_ctx[i].plane_res.dpp) + dpp_inst = context->res_ctx.pipe_ctx[i].plane_res.dpp->inst; + else if (!context->res_ctx.pipe_ctx[i].plane_res.dpp && dppclk_khz == 0) { + /* dpp == NULL && dppclk_khz == 0 is valid because of pipe harvesting. + * In this case just continue in loop + */ + continue; + } else if (!context->res_ctx.pipe_ctx[i].plane_res.dpp && dppclk_khz > 0) { + /* The software state is not valid if dpp resource is NULL and + * dppclk_khz > 0. + */ + ASSERT(false); + continue; + } + + prev_dppclk_khz = clk_mgr->dccg->pipe_dppclk_khz[i]; + + if (safe_to_lower || prev_dppclk_khz < dppclk_khz) + clk_mgr->dccg->funcs->update_dpp_dto( + clk_mgr->dccg, dpp_inst, dppclk_khz); + } +} + static void dcn32_update_clocks_update_dentist( struct clk_mgr_internal *clk_mgr, - struct dc_state *context, - uint32_t old_dispclk_khz) + struct dc_state *context) { uint32_t new_disp_divider = 0; - uint32_t old_disp_divider = 0; uint32_t new_dispclk_wdivider = 0; uint32_t old_dispclk_wdivider = 0; uint32_t i; + uint32_t dentist_dispclk_wdivider_readback = 0; + struct dc *dc = clk_mgr->base.ctx->dc; - if (old_dispclk_khz == 0 || clk_mgr->base.clks.dispclk_khz == 0) + if (clk_mgr->base.clks.dispclk_khz == 0) return; new_disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dispclk_khz; - old_disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR - * clk_mgr->base.dentist_vco_freq_khz / old_dispclk_khz; new_dispclk_wdivider = dentist_get_did_from_divider(new_disp_divider); - old_dispclk_wdivider = dentist_get_did_from_divider(old_disp_divider); + REG_GET(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, &old_dispclk_wdivider); /* When changing divider to or from 127, some extra programming is required to prevent corruption */ if (old_dispclk_wdivider == 127 && new_dispclk_wdivider != 127) { @@ -314,6 +347,17 @@ static void dcn32_update_clocks_update_dentist( if (clk_mgr->smu_present) dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(temp_dispclk_khz)); + if (dc->debug.override_dispclk_programming) { + REG_GET(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, &dentist_dispclk_wdivider_readback); + + if (dentist_dispclk_wdivider_readback != 126) { + REG_UPDATE(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, 126); + REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 50, 2000); + } + } + for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; struct dccg *dccg = clk_mgr->base.ctx->dc->res_pool->dccg; @@ -341,8 +385,37 @@ static void dcn32_update_clocks_update_dentist( /* do requested DISPCLK updates*/ if (clk_mgr->smu_present) dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DISPCLK, khz_to_mhz_ceil(clk_mgr->base.clks.dispclk_khz)); + + if (dc->debug.override_dispclk_programming) { + REG_GET(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, &dentist_dispclk_wdivider_readback); + + if (dentist_dispclk_wdivider_readback > new_dispclk_wdivider) { + REG_UPDATE(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, new_dispclk_wdivider); + REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 50, 2000); + } + } + +} + +static int dcn32_get_dispclk_from_dentist(struct clk_mgr *clk_mgr_base) +{ + struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); + uint32_t dispclk_wdivider; + int disp_divider; + + REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, &dispclk_wdivider); + disp_divider = dentist_get_divider_from_did(dispclk_wdivider); + + /* Return DISPCLK freq in Khz */ + if (disp_divider) + return (DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz) / disp_divider; + + return 0; } + static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base, struct dc_state *context, bool safe_to_lower) @@ -361,7 +434,6 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base, bool p_state_change_support; bool fclk_p_state_change_support; int total_plane_count; - int old_dispclk_khz = clk_mgr_base->clks.dispclk_khz; if (dc->work_arounds.skip_clock_update) return; @@ -503,19 +575,19 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base, 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, safe_to_lower); - dcn32_update_clocks_update_dentist(clk_mgr, context, old_dispclk_khz); + dcn32_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); + dcn32_update_clocks_update_dentist(clk_mgr, context); if (clk_mgr->smu_present) dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_DPPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dppclk_khz)); } else { /* if clock is being raised, increase refclk before lowering DTO */ if (update_dppclk || update_dispclk) - dcn32_update_clocks_update_dentist(clk_mgr, context, old_dispclk_khz); + dcn32_update_clocks_update_dentist(clk_mgr, context); /* There is a check inside dcn20_update_clocks_update_dpp_dto which ensures * that we do not lower dto when it is not safe to lower. We do not need to * compare the current and new dppclk before calling this function. */ - dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); + dcn32_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); } } @@ -797,6 +869,7 @@ static struct clk_mgr_funcs dcn32_funcs = { .are_clock_states_equal = dcn32_are_clock_states_equal, .enable_pme_wa = dcn32_enable_pme_wa, .is_smu_present = dcn32_is_smu_present, + .get_dispclk_from_dentist = dcn32_get_dispclk_from_dentist, }; void dcn32_clk_mgr_construct( |