From: Dmytro Laktyushkin <[email protected]> Fix incorrect pstate read order as well as min and max state logic.
Reviewed-by: Charlene Liu <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> Signed-off-by: Dmytro Laktyushkin <[email protected]> --- .../dc/clk_mgr/dcn315/dcn315_clk_mgr.c | 71 ++++++------------- 1 file changed, 23 insertions(+), 48 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c index 893991a0eb97..07edd9777edf 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c @@ -458,19 +458,6 @@ static void dcn315_get_dpm_table_from_smu(struct clk_mgr_internal *clk_mgr, dcn315_smu_transfer_dpm_table_smu_2_dram(clk_mgr); } -static uint32_t find_max_clk_value(const uint32_t clocks[], uint32_t num_clocks) -{ - uint32_t max = 0; - int i; - - for (i = 0; i < num_clocks; ++i) { - if (clocks[i] > max) - max = clocks[i]; - } - - return max; -} - static void dcn315_clk_mgr_helper_populate_bw_params( struct clk_mgr_internal *clk_mgr, struct integrated_info *bios_info, @@ -478,29 +465,21 @@ static void dcn315_clk_mgr_helper_populate_bw_params( { int i; struct clk_bw_params *bw_params = clk_mgr->base.bw_params; - uint32_t max_pstate = 0, max_fclk = 0, min_pstate = 0; + uint32_t max_pstate = clock_table->NumDfPstatesEnabled - 1; struct clk_limit_table_entry def_max = bw_params->clk_table.entries[bw_params->clk_table.num_entries - 1]; - /* Find highest fclk pstate */ - for (i = 0; i < clock_table->NumDfPstatesEnabled; i++) { - if (clock_table->DfPstateTable[i].FClk > max_fclk) { - max_fclk = clock_table->DfPstateTable[i].FClk; - max_pstate = i; - } - } - /* For 315 we want to base clock table on dcfclk, need at least one entry regardless of pmfw table */ for (i = 0; i < clock_table->NumDcfClkLevelsEnabled; i++) { int j; - uint32_t min_fclk = clock_table->DfPstateTable[0].FClk; - for (j = 1; j < clock_table->NumDfPstatesEnabled; j++) { - if (clock_table->DfPstateTable[j].Voltage <= clock_table->SocVoltage[i] - && clock_table->DfPstateTable[j].FClk < min_fclk) { - min_fclk = clock_table->DfPstateTable[j].FClk; - min_pstate = j; - } + /* DF table is sorted with clocks decreasing */ + for (j = clock_table->NumDfPstatesEnabled - 2; j >= 0; j--) { + if (clock_table->DfPstateTable[j].Voltage <= clock_table->SocVoltage[i]) + max_pstate = j; } + /* Max DCFCLK should match up with max pstate */ + if (i == clock_table->NumDcfClkLevelsEnabled - 1) + max_pstate = 0; /* First search defaults for the clocks we don't read using closest lower or equal default dcfclk */ for (j = bw_params->clk_table.num_entries - 1; j > 0; j--) @@ -511,9 +490,9 @@ static void dcn315_clk_mgr_helper_populate_bw_params( bw_params->clk_table.entries[i].dtbclk_mhz = bw_params->clk_table.entries[j].dtbclk_mhz; /* Now update clocks we do read */ - bw_params->clk_table.entries[i].fclk_mhz = min_fclk; - bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[min_pstate].MemClk; - bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[min_pstate].Voltage; + bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[max_pstate].FClk; + bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[max_pstate].MemClk; + bw_params->clk_table.entries[i].voltage = clock_table->SocVoltage[i]; bw_params->clk_table.entries[i].dcfclk_mhz = clock_table->DcfClocks[i]; bw_params->clk_table.entries[i].socclk_mhz = clock_table->SocClocks[i]; bw_params->clk_table.entries[i].dispclk_mhz = clock_table->DispClocks[i]; @@ -521,25 +500,16 @@ static void dcn315_clk_mgr_helper_populate_bw_params( bw_params->clk_table.entries[i].wck_ratio = 1; } - /* Make sure to include at least one entry and highest pstate */ - if (max_pstate != min_pstate || i == 0) { - bw_params->clk_table.entries[i].fclk_mhz = max_fclk; - bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[max_pstate].MemClk; - bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[max_pstate].Voltage; - bw_params->clk_table.entries[i].dcfclk_mhz = find_max_clk_value(clock_table->DcfClocks, NUM_DCFCLK_DPM_LEVELS); + /* Make sure to include at least one entry */ + if (i == 0) { + bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[0].FClk; + bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[0].MemClk; + bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[0].Voltage; + bw_params->clk_table.entries[i].dcfclk_mhz = clock_table->DcfClocks[0]; bw_params->clk_table.entries[i].wck_ratio = 1; i++; } - bw_params->clk_table.num_entries = i--; - - /* Make sure all highest clocks are included*/ - bw_params->clk_table.entries[i].socclk_mhz = find_max_clk_value(clock_table->SocClocks, NUM_SOCCLK_DPM_LEVELS); - bw_params->clk_table.entries[i].dispclk_mhz = find_max_clk_value(clock_table->DispClocks, NUM_DISPCLK_DPM_LEVELS); - bw_params->clk_table.entries[i].dppclk_mhz = find_max_clk_value(clock_table->DppClocks, NUM_DPPCLK_DPM_LEVELS); - ASSERT(clock_table->DcfClocks[i] == find_max_clk_value(clock_table->DcfClocks, NUM_DCFCLK_DPM_LEVELS)); - bw_params->clk_table.entries[i].phyclk_mhz = def_max.phyclk_mhz; - bw_params->clk_table.entries[i].phyclk_d18_mhz = def_max.phyclk_d18_mhz; - bw_params->clk_table.entries[i].dtbclk_mhz = def_max.dtbclk_mhz; + bw_params->clk_table.num_entries = i; /* Set any 0 clocks to max default setting. Not an issue for * power since we aren't doing switching in such case anyway @@ -565,6 +535,11 @@ static void dcn315_clk_mgr_helper_populate_bw_params( if (!bw_params->clk_table.entries[i].dtbclk_mhz) bw_params->clk_table.entries[i].dtbclk_mhz = def_max.dtbclk_mhz; } + + /* Make sure all highest default clocks are included*/ + ASSERT(bw_params->clk_table.entries[i-1].phyclk_mhz == def_max.phyclk_mhz); + ASSERT(bw_params->clk_table.entries[i-1].phyclk_d18_mhz == def_max.phyclk_d18_mhz); + ASSERT(bw_params->clk_table.entries[i-1].dtbclk_mhz == def_max.dtbclk_mhz); ASSERT(bw_params->clk_table.entries[i-1].dcfclk_mhz); bw_params->vram_type = bios_info->memory_type; bw_params->num_channels = bios_info->ma_channel_number; -- 2.35.1
