drm/amdgpu/swsmu: drop get_fan_speed_percent (v2)

No longer needed as we can calculate it based on
the fan's max rpm.

v2: rework code to avoid possible uninitialized
variable use.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -498,7 +498,6 @@ struct pptable_funcs {
 	int (*notify_smc_display_config)(struct smu_context *smu);
 	int (*set_cpu_power_state)(struct smu_context *smu);
 	bool (*is_dpm_running)(struct smu_context *smu);
-	int (*get_fan_speed_percent)(struct smu_context *smu, uint32_t *speed);
 	int (*get_fan_speed_rpm)(struct smu_context *smu, uint32_t *speed);
 	int (*set_watermarks_table)(struct smu_context *smu,
 				    struct dm_pp_wm_sets_with_clock_ranges_soc15 *clock_ranges);

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -2192,17 +2192,25 @@ int smu_set_fan_control_mode(struct smu_context *smu, int value)
 int smu_get_fan_speed_percent(struct smu_context *smu, uint32_t *speed)
 {
 	int ret = 0;
+	uint32_t percent;
+	uint32_t current_rpm;
 
 	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
 		return -EOPNOTSUPP;
 
 	mutex_lock(&smu->mutex);
 
-	if (smu->ppt_funcs->get_fan_speed_percent)
-		ret = smu->ppt_funcs->get_fan_speed_percent(smu, speed);
+	if (smu->ppt_funcs->get_fan_speed_rpm) {
+		ret = smu->ppt_funcs->get_fan_speed_rpm(smu, &current_rpm);
+		if (!ret) {
+			percent = current_rpm * 100 / smu->fan_max_rpm;
+			*speed = percent > 100 ? 100 : percent;
+		}
+	}
 
 	mutex_unlock(&smu->mutex);
 
+
 	return ret;
 }
 

drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c

@@ -1128,26 +1128,6 @@ static int arcturus_get_fan_speed_rpm(struct smu_context *smu,
 					     speed);
 }
 
-static int arcturus_get_fan_speed_percent(struct smu_context *smu,
-					  uint32_t *speed)
-{
-	PPTable_t *pptable = smu->smu_table.driver_pptable;
-	uint32_t percent, current_rpm;
-	int ret = 0;
-
-	if (!speed)
-		return -EINVAL;
-
-	ret = arcturus_get_fan_speed_rpm(smu, &current_rpm);
-	if (ret)
-		return ret;
-
-	percent = current_rpm * 100 / pptable->FanMaximumRpm;
-	*speed = percent > 100 ? 100 : percent;
-
-	return ret;
-}
-
 static int arcturus_get_fan_parameters(struct smu_context *smu)
 {
 	PPTable_t *pptable = smu->smu_table.driver_pptable;
@@ -2338,7 +2318,6 @@ static const struct pptable_funcs arcturus_ppt_funcs = {
 	.print_clk_levels = arcturus_print_clk_levels,
 	.force_clk_levels = arcturus_force_clk_levels,
 	.read_sensor = arcturus_read_sensor,
-	.get_fan_speed_percent = arcturus_get_fan_speed_percent,
 	.get_fan_speed_rpm = arcturus_get_fan_speed_rpm,
 	.get_power_profile_mode = arcturus_get_power_profile_mode,
 	.set_power_profile_mode = arcturus_set_power_profile_mode,

drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c

@@ -1367,24 +1367,6 @@ static int navi10_get_fan_speed_rpm(struct smu_context *smu,
 					   speed);
 }
 
-static int navi10_get_fan_speed_percent(struct smu_context *smu,
-					uint32_t *speed)
-{
-	int ret = 0;
-	uint32_t percent = 0;
-	uint32_t current_rpm;
-	PPTable_t *pptable = smu->smu_table.driver_pptable;
-
-	ret = navi10_get_fan_speed_rpm(smu, &current_rpm);
-	if (ret)
-		return ret;
-
-	percent = current_rpm * 100 / pptable->FanMaximumRpm;
-	*speed = percent > 100 ? 100 : percent;
-
-	return ret;
-}
-
 static int navi10_get_fan_parameters(struct smu_context *smu)
 {
 	PPTable_t *pptable = smu->smu_table.driver_pptable;
@@ -2606,7 +2588,6 @@ static const struct pptable_funcs navi10_ppt_funcs = {
 	.display_config_changed = navi10_display_config_changed,
 	.notify_smc_display_config = navi10_notify_smc_display_config,
 	.is_dpm_running = navi10_is_dpm_running,
-	.get_fan_speed_percent = navi10_get_fan_speed_percent,
 	.get_fan_speed_rpm = navi10_get_fan_speed_rpm,
 	.get_power_profile_mode = navi10_get_power_profile_mode,
 	.set_power_profile_mode = navi10_set_power_profile_mode,

drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c

@@ -1174,24 +1174,6 @@ static int sienna_cichlid_get_fan_speed_rpm(struct smu_context *smu,
 						   speed);
 }
 
-static int sienna_cichlid_get_fan_speed_percent(struct smu_context *smu,
-					uint32_t *speed)
-{
-	int ret = 0;
-	uint32_t percent = 0;
-	uint32_t current_rpm;
-	PPTable_t *pptable = smu->smu_table.driver_pptable;
-
-	ret = sienna_cichlid_get_fan_speed_rpm(smu, &current_rpm);
-	if (ret)
-		return ret;
-
-	percent = current_rpm * 100 / pptable->FanMaximumRpm;
-	*speed = percent > 100 ? 100 : percent;
-
-	return ret;
-}
-
 static int sienna_cichlid_get_fan_parameters(struct smu_context *smu)
 {
 	PPTable_t *pptable = smu->smu_table.driver_pptable;
@@ -2753,7 +2735,6 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
 	.display_config_changed = sienna_cichlid_display_config_changed,
 	.notify_smc_display_config = sienna_cichlid_notify_smc_display_config,
 	.is_dpm_running = sienna_cichlid_is_dpm_running,
-	.get_fan_speed_percent = sienna_cichlid_get_fan_speed_percent,
 	.get_fan_speed_rpm = sienna_cichlid_get_fan_speed_rpm,
 	.get_power_profile_mode = sienna_cichlid_get_power_profile_mode,
 	.set_power_profile_mode = sienna_cichlid_set_power_profile_mode,