[PATCH v4 04/10] drm/amd/pm: Add xgmi plpd policy to pm_policy

[Lijo Lazar]

Add support to set XGMI PLPD policy levels through pm_policy sysfs node.

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
---
v2, v3: No change
v4: Use a macro for XGMI PLPD policy type

 drivers/gpu/drm/amd/include/kgd_pp_interface.h | 1 +
 drivers/gpu/drm/amd/pm/amdgpu_pm.c             | 4 ++++
 drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h  | 1 +
 3 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
index 8ed9aa9a990d..4b20e2274313 100644
--- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h
+++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
@@ -276,6 +276,7 @@ enum pp_xgmi_plpd_mode {
 enum pp_pm_policy {
 	PP_PM_POLICY_NONE = -1,
 	PP_PM_POLICY_SOC_PSTATE = 0,
+	PP_PM_POLICY_XGMI_PLPD,
 	PP_PM_POLICY_NUM,
 };
 
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index 6dab0b085239..b03c38d198ea 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -2293,6 +2293,7 @@ static ssize_t amdgpu_get_pm_policy(struct device *dev,
 }
 
 #define STR_SOC_PSTATE_POLICY "soc_pstate"
+#define STR_XGMI_PLPD_POLICY "xgmi_plpd"
 
 static ssize_t amdgpu_set_pm_policy(struct device *dev,
 				    struct device_attribute *attr,
@@ -2320,6 +2321,9 @@ static ssize_t amdgpu_set_pm_policy(struct device *dev,
 	if (strncmp(tmp, STR_SOC_PSTATE_POLICY, strlen(STR_SOC_PSTATE_POLICY)) == 0) {
 		policy_type = PP_PM_POLICY_SOC_PSTATE;
 		tmp += strlen(STR_SOC_PSTATE_POLICY);
+	} else if (strncmp(tmp, STR_XGMI_PLPD_POLICY, strlen(STR_XGMI_PLPD_POLICY)) == 0) {
+		policy_type = PP_PM_POLICY_XGMI_PLPD;
+		tmp += strlen(STR_XGMI_PLPD_POLICY);
 	} else {
 		return -EINVAL;
 	}
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
index ee5b9701038c..f304071adee1 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -1574,6 +1574,7 @@ typedef struct {
 } WifiBandEntryTable_t;
 
 #define STR_SOC_PSTATE_POLICY "soc_pstate"
+#define STR_XGMI_PLPD_POLICY "xgmi_plpd"
 
 struct smu_dpm_policy *smu_get_pm_policy(struct smu_context *smu,
 					 enum pp_pm_policy p_type);
-- 
2.25.1