[PATCH 1/2] drm/powerplay: Add smu set xgmi pstate interface

[Liu, Shaoyun]

XGMI pstate is controlled by SMU, driver need this interface to communicate
with SMU

Change-Id: I3a30797332557725d48d392bea0c9d59e2d0e427
Signed-off-by: shaoyunl <shaoyun.liu at amd.com>
---
 drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 4 ++++
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c      | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 2083139..0e52d1b 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -546,6 +546,8 @@ struct smu_funcs
 	int (*get_fan_speed_percent)(struct smu_context *smu, uint32_t *speed);
 	int (*set_fan_speed_percent)(struct smu_context *smu, uint32_t speed);
 	int (*set_fan_speed_rpm)(struct smu_context *smu, uint32_t speed);
+	int (*set_xgmi_pstate)(struct smu_context *smu, uint32_t pstate);
+
 };
 
 #define smu_init_microcode(smu) \
@@ -729,6 +731,8 @@ struct smu_funcs
 	((smu)->funcs->get_sclk ? (smu)->funcs->get_sclk((smu), (low)) : 0)
 #define smu_get_mclk(smu, low) \
 	((smu)->funcs->get_mclk ? (smu)->funcs->get_mclk((smu), (low)) : 0)
+#define smu_set_xgmi_pstate(smu, pstate) \
+		((smu)->funcs->set_xgmi_pstate ? (smu)->funcs->set_xgmi_pstate((smu), (pstate)) : 0)
 
 
 extern int smu_get_atom_data_table(struct smu_context *smu, uint32_t table,
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index 9d75911..2e2ce71 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1952,6 +1952,13 @@ static int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu,
 	return ret;
 }
 
+static int smu_v11_0_set_xgmi_pstate(struct smu_context *smu,
+				     uint32_t pstate)
+{
+	/* send msg to SMU to set pstate */
+	return 0;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
 	.init_microcode = smu_v11_0_init_microcode,
 	.load_microcode = smu_v11_0_load_microcode,
@@ -2008,6 +2015,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.get_fan_speed_percent = smu_v11_0_get_fan_speed_percent,
 	.set_fan_speed_percent = smu_v11_0_set_fan_speed_percent,
 	.set_fan_speed_rpm = smu_v11_0_set_fan_speed_rpm,
+	.set_xgmi_pstate = smu_v11_0_set_xgmi_pstate,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)
-- 
2.7.4