drm/amd/pm: add support to get dpm clock value for yellow carp

Implement the sysfs API for getting values of pp dpm
clocks(pp_dpm_socclk/mclk/fclk/vclk/dclk) for yellow carp.

Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
index fa871df..211cc9b 100644 (file)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
@@ -458,10 +458,113 @@ static int yellow_carp_od_edit_dpm_table(struct smu_context *smu, enum PP_OD_DPM
        return ret;
 }
 
+static int yellow_carp_get_current_clk_freq(struct smu_context *smu,
+                                               enum smu_clk_type clk_type,
+                                               uint32_t *value)
+{
+       MetricsMember_t member_type;
+
+       switch (clk_type) {
+       case SMU_SOCCLK:
+               member_type = METRICS_AVERAGE_SOCCLK;
+               break;
+       case SMU_VCLK:
+           member_type = METRICS_AVERAGE_VCLK;
+               break;
+       case SMU_DCLK:
+               member_type = METRICS_AVERAGE_DCLK;
+               break;
+       case SMU_MCLK:
+               member_type = METRICS_AVERAGE_UCLK;
+               break;
+       case SMU_FCLK:
+               return smu_cmn_send_smc_msg_with_param(smu,
+                               SMU_MSG_GetFclkFrequency, 0, value);
+       default:
+               break;
+       }
+
+       return yellow_carp_get_smu_metrics_data(smu, member_type, value);
+}
+
+static int yellow_carp_get_dpm_level_count(struct smu_context *smu,
+                                               enum smu_clk_type clk_type,
+                                               uint32_t *count)
+{
+       DpmClocks_t *clk_table = smu->smu_table.clocks_table;
+
+       switch (clk_type) {
+       case SMU_SOCCLK:
+               *count = clk_table->NumSocClkLevelsEnabled;
+               break;
+       case SMU_VCLK:
+               *count = clk_table->VcnClkLevelsEnabled;
+               break;
+       case SMU_DCLK:
+               *count = clk_table->VcnClkLevelsEnabled;
+               break;
+       case SMU_MCLK:
+               *count = clk_table->NumDfPstatesEnabled;
+               break;
+       case SMU_FCLK:
+               *count = clk_table->NumDfPstatesEnabled;
+               break;
+       default:
+               break;
+       }
+
+       return 0;
+}
+
+static int yellow_carp_get_dpm_freq_by_index(struct smu_context *smu,
+                                               enum smu_clk_type clk_type,
+                                               uint32_t dpm_level,
+                                               uint32_t *freq)
+{
+       DpmClocks_t *clk_table = smu->smu_table.clocks_table;
+
+       if (!clk_table || clk_type >= SMU_CLK_COUNT)
+               return -EINVAL;
+
+       switch (clk_type) {
+       case SMU_SOCCLK:
+               if (dpm_level >= clk_table->NumSocClkLevelsEnabled)
+                       return -EINVAL;
+               *freq = clk_table->SocClocks[dpm_level];
+               break;
+       case SMU_VCLK:
+               if (dpm_level >= clk_table->VcnClkLevelsEnabled)
+                       return -EINVAL;
+               *freq = clk_table->VClocks[dpm_level];
+               break;
+       case SMU_DCLK:
+               if (dpm_level >= clk_table->VcnClkLevelsEnabled)
+                       return -EINVAL;
+               *freq = clk_table->DClocks[dpm_level];
+               break;
+       case SMU_UCLK:
+       case SMU_MCLK:
+               if (dpm_level >= clk_table->NumDfPstatesEnabled)
+                       return -EINVAL;
+               *freq = clk_table->DfPstateTable[dpm_level].MemClk;
+               break;
+       case SMU_FCLK:
+               if (dpm_level >= clk_table->NumDfPstatesEnabled)
+                       return -EINVAL;
+               *freq = clk_table->DfPstateTable[dpm_level].FClk;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
 static int yellow_carp_print_clk_levels(struct smu_context *smu,
                                enum smu_clk_type clk_type, char *buf)
 {
-       int size = 0;
+       int i, size = 0, ret = 0;
+       uint32_t cur_value = 0, value = 0, count = 0;
 
        switch (clk_type) {
        case SMU_OD_SCLK:
@@ -476,10 +579,33 @@ static int yellow_carp_print_clk_levels(struct smu_context *smu,
                size += sprintf(buf + size, "SCLK: %7uMhz %10uMhz\n",
                                                smu->gfx_default_hard_min_freq, smu->gfx_default_soft_max_freq);
                break;
+       case SMU_SOCCLK:
+       case SMU_VCLK:
+       case SMU_DCLK:
+       case SMU_MCLK:
+       case SMU_FCLK:
+               ret = yellow_carp_get_current_clk_freq(smu, clk_type, &cur_value);
+               if (ret)
+                       goto print_clk_out;
+
+               ret = yellow_carp_get_dpm_level_count(smu, clk_type, &count);
+               if (ret)
+                       goto print_clk_out;
+
+               for (i = 0; i < count; i++) {
+                       ret = yellow_carp_get_dpm_freq_by_index(smu, clk_type, i, &value);
+                       if (ret)
+                               goto print_clk_out;
+
+                       size += sprintf(buf + size, "%d: %uMhz %s\n", i, value,
+                                       cur_value == value ? "*" : "");
+               }
+               break;
        default:
                break;
        }
 
+print_clk_out:
        return size;
 }