drm/amd/pm: fix uninitialized variable warning for smu_v13

Clear warning that using uninitialized variable when the dpm is
not enabled and reuse the code for SMU13 to get the boot frequency.
Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h

@@ -298,5 +298,9 @@ int smu_v13_0_enable_uclk_shadow(struct smu_context *smu, bool enable);
 
 int smu_v13_0_set_wbrf_exclusion_ranges(struct smu_context *smu,
 						 struct freq_band_range *exclusion_ranges);
+
+int smu_v13_0_get_boot_freq_by_index(struct smu_context *smu,
+				     enum smu_clk_type clk_type,
+				     uint32_t *value);
 #endif
 #endif

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

@@ -1559,22 +1559,9 @@ int smu_v13_0_get_dpm_ultimate_freq(struct smu_context *smu, enum smu_clk_type c
 	uint32_t clock_limit;
 
 	if (!smu_cmn_clk_dpm_is_enabled(smu, clk_type)) {
-		switch (clk_type) {
-		case SMU_MCLK:
-		case SMU_UCLK:
-			clock_limit = smu->smu_table.boot_values.uclk;
-			break;
-		case SMU_GFXCLK:
-		case SMU_SCLK:
-			clock_limit = smu->smu_table.boot_values.gfxclk;
-			break;
-		case SMU_SOCCLK:
-			clock_limit = smu->smu_table.boot_values.socclk;
-			break;
-		default:
-			clock_limit = 0;
-			break;
-		}
+		ret = smu_v13_0_get_boot_freq_by_index(smu, clk_type, &clock_limit);
+		if (ret)
+			return ret;
 
 		/* clock in Mhz unit */
 		if (min)
@@ -1894,6 +1881,40 @@ int smu_v13_0_set_power_source(struct smu_context *smu,
 					       NULL);
 }
 
+int smu_v13_0_get_boot_freq_by_index(struct smu_context *smu,
+				     enum smu_clk_type clk_type,
+				     uint32_t *value)
+{
+	int ret = 0;
+
+	switch (clk_type) {
+	case SMU_MCLK:
+	case SMU_UCLK:
+		*value = smu->smu_table.boot_values.uclk;
+		break;
+	case SMU_FCLK:
+		*value = smu->smu_table.boot_values.fclk;
+		break;
+	case SMU_GFXCLK:
+	case SMU_SCLK:
+		*value = smu->smu_table.boot_values.gfxclk;
+		break;
+	case SMU_SOCCLK:
+		*value = smu->smu_table.boot_values.socclk;
+		break;
+	case SMU_VCLK:
+		*value = smu->smu_table.boot_values.vclk;
+		break;
+	case SMU_DCLK:
+		*value = smu->smu_table.boot_values.dclk;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
 int smu_v13_0_get_dpm_freq_by_index(struct smu_context *smu,
 				    enum smu_clk_type clk_type, uint16_t level,
 				    uint32_t *value)
@@ -1905,7 +1926,7 @@ int smu_v13_0_get_dpm_freq_by_index(struct smu_context *smu,
 		return -EINVAL;
 
 	if (!smu_cmn_clk_dpm_is_enabled(smu, clk_type))
-		return 0;
+		return smu_v13_0_get_boot_freq_by_index(smu, clk_type, value);
 
 	clk_id = smu_cmn_to_asic_specific_index(smu,
 						CMN2ASIC_MAPPING_CLK,

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c

@@ -756,31 +756,9 @@ static int smu_v13_0_4_get_dpm_ultimate_freq(struct smu_context *smu,
 	int ret = 0;
 
 	if (!smu_v13_0_4_clk_dpm_is_enabled(smu, clk_type)) {
-		switch (clk_type) {
-		case SMU_MCLK:
-		case SMU_UCLK:
-			clock_limit = smu->smu_table.boot_values.uclk;
-			break;
-		case SMU_FCLK:
-			clock_limit = smu->smu_table.boot_values.fclk;
-			break;
-		case SMU_GFXCLK:
-		case SMU_SCLK:
-			clock_limit = smu->smu_table.boot_values.gfxclk;
-			break;
-		case SMU_SOCCLK:
-			clock_limit = smu->smu_table.boot_values.socclk;
-			break;
-		case SMU_VCLK:
-			clock_limit = smu->smu_table.boot_values.vclk;
-			break;
-		case SMU_DCLK:
-			clock_limit = smu->smu_table.boot_values.dclk;
-			break;
-		default:
-			clock_limit = 0;
-			break;
-		}
+		ret = smu_v13_0_get_boot_freq_by_index(smu, clk_type, &clock_limit);
+		if (ret)
+			return ret;
 
 		/* clock in Mhz unit */
 		if (min)

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_5_ppt.c

@@ -733,31 +733,9 @@ static int smu_v13_0_5_get_dpm_ultimate_freq(struct smu_context *smu,
 	int ret = 0;
 
 	if (!smu_v13_0_5_clk_dpm_is_enabled(smu, clk_type)) {
-		switch (clk_type) {
-		case SMU_MCLK:
-		case SMU_UCLK:
-			clock_limit = smu->smu_table.boot_values.uclk;
-			break;
-		case SMU_FCLK:
-			clock_limit = smu->smu_table.boot_values.fclk;
-			break;
-		case SMU_GFXCLK:
-		case SMU_SCLK:
-			clock_limit = smu->smu_table.boot_values.gfxclk;
-			break;
-		case SMU_SOCCLK:
-			clock_limit = smu->smu_table.boot_values.socclk;
-			break;
-		case SMU_VCLK:
-			clock_limit = smu->smu_table.boot_values.vclk;
-			break;
-		case SMU_DCLK:
-			clock_limit = smu->smu_table.boot_values.dclk;
-			break;
-		default:
-			clock_limit = 0;
-			break;
-		}
+		ret = smu_v13_0_get_boot_freq_by_index(smu, clk_type, &clock_limit);
+		if (ret)
+			return ret;
 
 		/* clock in Mhz unit */
 		if (min)

drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c

@@ -867,31 +867,9 @@ static int yellow_carp_get_dpm_ultimate_freq(struct smu_context *smu,
 	int ret = 0;
 
 	if (!yellow_carp_clk_dpm_is_enabled(smu, clk_type)) {
-		switch (clk_type) {
-		case SMU_MCLK:
-		case SMU_UCLK:
-			clock_limit = smu->smu_table.boot_values.uclk;
-			break;
-		case SMU_FCLK:
-			clock_limit = smu->smu_table.boot_values.fclk;
-			break;
-		case SMU_GFXCLK:
-		case SMU_SCLK:
-			clock_limit = smu->smu_table.boot_values.gfxclk;
-			break;
-		case SMU_SOCCLK:
-			clock_limit = smu->smu_table.boot_values.socclk;
-			break;
-		case SMU_VCLK:
-			clock_limit = smu->smu_table.boot_values.vclk;
-			break;
-		case SMU_DCLK:
-			clock_limit = smu->smu_table.boot_values.dclk;
-			break;
-		default:
-			clock_limit = 0;
-			break;
-		}
+		ret = smu_v13_0_get_boot_freq_by_index(smu, clk_type, &clock_limit);
+		if (ret)
+			return ret;
 
 		/* clock in Mhz unit */
 		if (min)