[PATCH 012/138] drm/amd/powerplay: add interface to parse pptable (v2)

[Huang Rui]

This patch adds interface to parse pptable for smu.
It's to parse pptable format and fill PPTable_t smc_pptable to smu_table_context
structure. And read the smc_dpm_table from vbios, then fill it into smc_pptable.

v2: add detailed info to describe this function

Signed-off-by: Huang Rui <ray.huang at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c     | 9 +++++++++
 drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 931343c..323db7d 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -166,6 +166,15 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
 	if (ret)
 		return ret;
 
+	/*
+	 * Parse pptable format and fill PPTable_t smc_pptable to
+	 * smu_table_context structure. And read the smc_dpm_table from vbios,
+	 * then fill it into smc_pptable.
+	 */
+	ret = smu_parse_pptable(smu);
+	if (ret)
+		return ret;
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 4015963..fcdbade4 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -42,6 +42,7 @@ struct smu_funcs
 	int (*read_pptable_from_vbios)(struct smu_context *smu);
 	int (*get_vbios_bootup_values)(struct smu_context *smu);
 	int (*check_pptable)(struct smu_context *smu);
+	int (*parse_pptable)(struct smu_context *smu);
 };
 
 #define smu_init_microcode(smu) \
@@ -60,6 +61,9 @@ struct smu_funcs
 	((smu)->funcs->get_vbios_bootup_values ? (smu)->funcs->get_vbios_bootup_values((smu)) : 0)
 #define smu_check_pptable(smu) \
 	((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)
+
 
 extern const struct amd_ip_funcs smu_ip_funcs;
 
-- 
2.7.4