drm/amd/powerplay: add interface to populate smc pptable (v2)

This patch adds interface to populate smc pptable for smu.
It's to set initialized values (get from vbios) to dpm tables context such as
gfxclk, memclk, dcefclk, and etc. And enable the DPM feature for each type of
clks.

v2: add detailed info to describe this function
Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

@@ -175,6 +175,15 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
 	if (ret)
 		return ret;
 
+	/*
+	 * Set initialized values (get from vbios) to dpm tables context such as
+	 * gfxclk, memclk, dcefclk, and etc. And enable the DPM feature for each
+	 * type of clks.
+	 */
+	ret = smu_populate_smc_pptable(smu);
+	if (ret)
+		return ret;
+
 	return 0;
 }
 

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

@@ -43,6 +43,7 @@ struct smu_funcs
 	int (*get_vbios_bootup_values)(struct smu_context *smu);
 	int (*check_pptable)(struct smu_context *smu);
 	int (*parse_pptable)(struct smu_context *smu);
+	int (*populate_smc_pptable)(struct smu_context *smu);
 };
 
 #define smu_init_microcode(smu) \
@@ -63,6 +64,8 @@ struct smu_funcs
 	((smu)->funcs->check_pptable ? (smu)->funcs->check_pptable((smu)) : 0)
 #define smu_parse_pptable(smu) \
 	((smu)->funcs->parse_pptable ? (smu)->funcs->parse_pptable((smu)) : 0)
+#define smu_populate_smc_pptable(smu) \
+	((smu)->funcs->populate_smc_pptable ? (smu)->funcs->populate_smc_pptable((smu)) : 0)
 
 
 extern const struct amd_ip_funcs smu_ip_funcs;