diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 90 |
1 files changed, 84 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c index e2bb2b9971f3..a95034801712 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c @@ -485,24 +485,20 @@ static void get_optimal_ntuple(struct _vcs_dpi_voltage_scaling_st *entry) } } -void insert_entry_into_table_sorted(struct _vcs_dpi_voltage_scaling_st *table, +static void insert_entry_into_table_sorted(struct _vcs_dpi_voltage_scaling_st *table, unsigned int *num_entries, struct _vcs_dpi_voltage_scaling_st *entry) { int i = 0; int index = 0; - float net_bw_of_new_state = 0; dc_assert_fp_enabled(); - get_optimal_ntuple(entry); - if (*num_entries == 0) { table[0] = *entry; (*num_entries)++; } else { - net_bw_of_new_state = calculate_net_bw_in_kbytes_sec(entry); - while (net_bw_of_new_state > calculate_net_bw_in_kbytes_sec(&table[index])) { + while (entry->net_bw_in_kbytes_sec > table[index].net_bw_in_kbytes_sec) { index++; if (index >= *num_entries) break; @@ -2349,6 +2345,63 @@ void dcn32_patch_dpm_table(struct clk_bw_params *bw_params) bw_params->clk_table.entries[0].memclk_mhz = dcn3_2_soc.clock_limits[0].dram_speed_mts / 16; } +static void swap_table_entries(struct _vcs_dpi_voltage_scaling_st *first_entry, + struct _vcs_dpi_voltage_scaling_st *second_entry) +{ + struct _vcs_dpi_voltage_scaling_st temp_entry = *first_entry; + *first_entry = *second_entry; + *second_entry = temp_entry; +} + +/* + * sort_entries_with_same_bw - Sort entries sharing the same bandwidth by DCFCLK + */ +static void sort_entries_with_same_bw(struct _vcs_dpi_voltage_scaling_st *table, unsigned int *num_entries) +{ + unsigned int start_index = 0; + unsigned int end_index = 0; + unsigned int current_bw = 0; + + for (int i = 0; i < (*num_entries - 1); i++) { + if (table[i].net_bw_in_kbytes_sec == table[i+1].net_bw_in_kbytes_sec) { + current_bw = table[i].net_bw_in_kbytes_sec; + start_index = i; + end_index = ++i; + + while ((i < (*num_entries - 1)) && (table[i+1].net_bw_in_kbytes_sec == current_bw)) + end_index = ++i; + } + + if (start_index != end_index) { + for (int j = start_index; j < end_index; j++) { + for (int k = start_index; k < end_index; k++) { + if (table[k].dcfclk_mhz > table[k+1].dcfclk_mhz) + swap_table_entries(&table[k], &table[k+1]); + } + } + } + + start_index = 0; + end_index = 0; + + } +} + +/* + * remove_inconsistent_entries - Ensure entries with the same bandwidth have MEMCLK and FCLK monotonically increasing + * and remove entries that do not + */ +static void remove_inconsistent_entries(struct _vcs_dpi_voltage_scaling_st *table, unsigned int *num_entries) +{ + for (int i = 0; i < (*num_entries - 1); i++) { + if (table[i].net_bw_in_kbytes_sec == table[i+1].net_bw_in_kbytes_sec) { + if ((table[i].dram_speed_mts > table[i+1].dram_speed_mts) || + (table[i].fabricclk_mhz > table[i+1].fabricclk_mhz)) + remove_entry_from_table_at_index(table, num_entries, i); + } + } +} + /* * override_max_clk_values - Overwrite the max clock frequencies with the max DC mode timings * Input: @@ -2480,6 +2533,8 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk entry.fabricclk_mhz = 0; entry.dram_speed_mts = 0; + get_optimal_ntuple(&entry); + entry.net_bw_in_kbytes_sec = calculate_net_bw_in_kbytes_sec(&entry); insert_entry_into_table_sorted(table, num_entries, &entry); } @@ -2488,6 +2543,8 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk entry.fabricclk_mhz = 0; entry.dram_speed_mts = 0; + get_optimal_ntuple(&entry); + entry.net_bw_in_kbytes_sec = calculate_net_bw_in_kbytes_sec(&entry); insert_entry_into_table_sorted(table, num_entries, &entry); // Insert the UCLK DPMS @@ -2496,6 +2553,8 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk entry.fabricclk_mhz = 0; entry.dram_speed_mts = bw_params->clk_table.entries[i].memclk_mhz * 16; + get_optimal_ntuple(&entry); + entry.net_bw_in_kbytes_sec = calculate_net_bw_in_kbytes_sec(&entry); insert_entry_into_table_sorted(table, num_entries, &entry); } @@ -2506,6 +2565,8 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk entry.fabricclk_mhz = bw_params->clk_table.entries[i].fclk_mhz; entry.dram_speed_mts = 0; + get_optimal_ntuple(&entry); + entry.net_bw_in_kbytes_sec = calculate_net_bw_in_kbytes_sec(&entry); insert_entry_into_table_sorted(table, num_entries, &entry); } } @@ -2515,6 +2576,8 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk entry.fabricclk_mhz = max_clk_data.fclk_mhz; entry.dram_speed_mts = 0; + get_optimal_ntuple(&entry); + entry.net_bw_in_kbytes_sec = calculate_net_bw_in_kbytes_sec(&entry); insert_entry_into_table_sorted(table, num_entries, &entry); } @@ -2530,6 +2593,21 @@ static int build_synthetic_soc_states(bool disable_dc_mode_overwrite, struct clk remove_entry_from_table_at_index(table, num_entries, i); } + // Insert entry with all max dc limits without bandwidth matching + if (!disable_dc_mode_overwrite) { + struct _vcs_dpi_voltage_scaling_st max_dc_limits_entry = entry; + + max_dc_limits_entry.dcfclk_mhz = max_clk_data.dcfclk_mhz; + max_dc_limits_entry.fabricclk_mhz = max_clk_data.fclk_mhz; + max_dc_limits_entry.dram_speed_mts = max_clk_data.memclk_mhz * 16; + + max_dc_limits_entry.net_bw_in_kbytes_sec = calculate_net_bw_in_kbytes_sec(&max_dc_limits_entry); + insert_entry_into_table_sorted(table, num_entries, &max_dc_limits_entry); + + sort_entries_with_same_bw(table, num_entries); + remove_inconsistent_entries(table, num_entries); + } + // At this point, the table only contains supported points of interest // it could be used as is, but some states may be redundant due to // coarse grained nature of some clocks, so we want to round up to |