[PATCH 1/2] drm/amd/pm: modify the power limit level parameter from bool to enum type

[Xiaomeng Hou]

The original smu_get_power_limit callback accepts the power limit level
parameter as bool which limits to max and current. For possible needs to
retrieve other level like min, extend the parameter type using enum.

Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou at amd.com>
---
 drivers/gpu/drm/amd/pm/amdgpu_pm.c        |  4 ++--
 drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h   |  9 ++++++++-
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 13 +++++++++++--
 3 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index cf475ac01b27..39899e7989a2 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -3073,7 +3073,7 @@ static ssize_t amdgpu_hwmon_show_power_cap_max(struct device *dev,
 	}
 
 	if (is_support_sw_smu(adev)) {
-		smu_get_power_limit(&adev->smu, &limit, true);
+		smu_get_power_limit(&adev->smu, &limit, SMU_PPT_LIMIT_MAX);
 		size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
 	} else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->get_power_limit) {
 		adev->powerplay.pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, true);
@@ -3107,7 +3107,7 @@ static ssize_t amdgpu_hwmon_show_power_cap(struct device *dev,
 	}
 
 	if (is_support_sw_smu(adev)) {
-		smu_get_power_limit(&adev->smu, &limit, false);
+		smu_get_power_limit(&adev->smu, &limit, SMU_PPT_LIMIT_CURRENT);
 		size = snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
 	} else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->get_power_limit) {
 		adev->powerplay.pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, false);
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index 44279c2afccb..82a5f4a4faf5 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -161,6 +161,13 @@ enum smu_power_src_type
 	SMU_POWER_SOURCE_COUNT,
 };
 
+enum smu_ppt_limit_level
+{
+	SMU_PPT_LIMIT_MIN = -1,
+	SMU_PPT_LIMIT_CURRENT,
+	SMU_PPT_LIMIT_MAX,
+};
+
 enum smu_memory_pool_size
 {
     SMU_MEMORY_POOL_SIZE_ZERO   = 0,
@@ -1218,7 +1225,7 @@ int smu_set_fan_speed_rpm(struct smu_context *smu, uint32_t speed);
 
 int smu_get_power_limit(struct smu_context *smu,
 			uint32_t *limit,
-			bool max_setting);
+			enum smu_ppt_limit_level limit_level);
 
 int smu_set_power_limit(struct smu_context *smu, uint32_t limit);
 int smu_print_clk_levels(struct smu_context *smu, enum smu_clk_type clk_type, char *buf);
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index c00f3f531965..9017024642bb 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2044,14 +2044,23 @@ int smu_set_fan_speed_rpm(struct smu_context *smu, uint32_t speed)
 
 int smu_get_power_limit(struct smu_context *smu,
 			uint32_t *limit,
-			bool max_setting)
+			enum smu_ppt_limit_level limit_level)
 {
 	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
 		return -EOPNOTSUPP;
 
 	mutex_lock(&smu->mutex);
 
-	*limit = (max_setting ? smu->max_power_limit : smu->current_power_limit);
+	switch (limit_level) {
+	case SMU_PPT_LIMIT_CURRENT:
+		*limit = smu->current_power_limit;
+		break;
+	case SMU_PPT_LIMIT_MAX:
+		*limit = smu->max_power_limit;
+		break;
+	default:
+		break;
+	}
 
 	mutex_unlock(&smu->mutex);
 
-- 
2.17.1