drm/amd/pm: drop the unnecessary intermediate percent-based transition

Currently, the readout of fan speed pwm is transited into percent-based
and then pwm-based. However, the transition into percent-based is totally
unnecessary and make the final output less accurate.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

23 files changed, 112 insertions, 140 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 96e895d6be35..0f278cc3a5f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1271,6 +1271,8 @@ int emu_soc_asic_init(struct amdgpu_device *adev);
 
 #define amdgpu_inc_vram_lost(adev) atomic_inc(&((adev)->vram_lost_counter));
 
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+
 /* Common functions */
 bool amdgpu_device_has_job_running(struct amdgpu_device *adev);
 bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
index e38b191c7b7c..bac15c466733 100644
--- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h
+++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
@@ -306,8 +306,8 @@ struct amd_pm_funcs {
 /* export for sysfs */
 	void (*set_fan_control_mode)(void *handle, u32 mode);
 	u32 (*get_fan_control_mode)(void *handle);
-	int (*set_fan_speed_percent)(void *handle, u32 speed);
-	int (*get_fan_speed_percent)(void *handle, u32 *speed);
+	int (*set_fan_speed_pwm)(void *handle, u32 speed);
+	int (*get_fan_speed_pwm)(void *handle, u32 *speed);
 	int (*force_clock_level)(void *handle, enum pp_clock_type type, uint32_t mask);
 	int (*print_clock_levels)(void *handle, enum pp_clock_type type, char *buf);
 	int (*force_performance_level)(void *handle, enum amd_dpm_forced_level level);
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index 545689d80d8c..2d55627b05b1 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -2474,10 +2474,8 @@ static ssize_t amdgpu_hwmon_set_pwm1(struct device *dev,
 		return err;
 	}
 
-	value = (value * 100) / 255;
-
-	if (adev->powerplay.pp_funcs->set_fan_speed_percent)
-		err = amdgpu_dpm_set_fan_speed_percent(adev, value);
+	if (adev->powerplay.pp_funcs->set_fan_speed_pwm)
+		err = amdgpu_dpm_set_fan_speed_pwm(adev, value);
 	else
 		err = -EINVAL;
 
@@ -2509,8 +2507,8 @@ static ssize_t amdgpu_hwmon_get_pwm1(struct device *dev,
 		return err;
 	}
 
-	if (adev->powerplay.pp_funcs->get_fan_speed_percent)
-		err = amdgpu_dpm_get_fan_speed_percent(adev, &speed);
+	if (adev->powerplay.pp_funcs->get_fan_speed_pwm)
+		err = amdgpu_dpm_get_fan_speed_pwm(adev, &speed);
 	else
 		err = -EINVAL;
 
@@ -2520,8 +2518,6 @@ static ssize_t amdgpu_hwmon_get_pwm1(struct device *dev,
 	if (err)
 		return err;
 
-	speed = (speed * 255) / 100;
-
 	return sysfs_emit(buf, "%i\n", speed);
 }
 
@@ -3357,13 +3353,13 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 
 	if (!is_support_sw_smu(adev)) {
 		/* mask fan attributes if we have no bindings for this asic to expose */
-		if ((!adev->powerplay.pp_funcs->get_fan_speed_percent &&
+		if ((!adev->powerplay.pp_funcs->get_fan_speed_pwm &&
 		     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */
 		    (!adev->powerplay.pp_funcs->get_fan_control_mode &&
 		     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't query state */
 			effective_mode &= ~S_IRUGO;
 
-		if ((!adev->powerplay.pp_funcs->set_fan_speed_percent &&
+		if ((!adev->powerplay.pp_funcs->set_fan_speed_pwm &&
 		     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't manage fan */
 		    (!adev->powerplay.pp_funcs->set_fan_control_mode &&
 		     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't manage state */
@@ -3387,8 +3383,8 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj,
 
 	if (!is_support_sw_smu(adev)) {
 		/* hide max/min values if we can't both query and manage the fan */
-		if ((!adev->powerplay.pp_funcs->set_fan_speed_percent &&
-		     !adev->powerplay.pp_funcs->get_fan_speed_percent) &&
+		if ((!adev->powerplay.pp_funcs->set_fan_speed_pwm &&
+		     !adev->powerplay.pp_funcs->get_fan_speed_pwm) &&
 		     (!adev->powerplay.pp_funcs->set_fan_speed_rpm &&
 		     !adev->powerplay.pp_funcs->get_fan_speed_rpm) &&
 		    (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
index d03e6fa2bf1a..98f1b3d8c1d5 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
@@ -280,11 +280,11 @@ enum amdgpu_pcie_gen {
 #define amdgpu_dpm_get_fan_control_mode(adev) \
 		((adev)->powerplay.pp_funcs->get_fan_control_mode((adev)->powerplay.pp_handle))
 
-#define amdgpu_dpm_set_fan_speed_percent(adev, s) \
-		((adev)->powerplay.pp_funcs->set_fan_speed_percent((adev)->powerplay.pp_handle, (s)))
+#define amdgpu_dpm_set_fan_speed_pwm(adev, s) \
+		((adev)->powerplay.pp_funcs->set_fan_speed_pwm((adev)->powerplay.pp_handle, (s)))
 
-#define amdgpu_dpm_get_fan_speed_percent(adev, s) \
-		((adev)->powerplay.pp_funcs->get_fan_speed_percent((adev)->powerplay.pp_handle, (s)))
+#define amdgpu_dpm_get_fan_speed_pwm(adev, s) \
+		((adev)->powerplay.pp_funcs->get_fan_speed_pwm((adev)->powerplay.pp_handle, (s)))
 
 #define amdgpu_dpm_get_fan_speed_rpm(adev, s) \
 		((adev)->powerplay.pp_funcs->get_fan_speed_rpm)((adev)->powerplay.pp_handle, (s))
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index c0ac6754f448..715b4225f5ee 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -231,7 +231,7 @@ enum smu_memory_pool_size
 struct smu_user_dpm_profile {
 	uint32_t fan_mode;
 	uint32_t power_limit;
-	uint32_t fan_speed_percent;
+	uint32_t fan_speed_pwm;
 	uint32_t fan_speed_rpm;
 	uint32_t flags;
 	uint32_t user_od;
@@ -543,7 +543,7 @@ struct smu_context
 	struct work_struct interrupt_work;
 
 	unsigned fan_max_rpm;
-	unsigned manual_fan_speed_percent;
+	unsigned manual_fan_speed_pwm;
 
 	uint32_t gfx_default_hard_min_freq;
 	uint32_t gfx_default_soft_max_freq;
@@ -725,9 +725,9 @@ struct pptable_funcs {
 	bool (*is_dpm_running)(struct smu_context *smu);
 
 	/**
-	 * @get_fan_speed_percent: Get the current fan speed in percent.
+	 * @get_fan_speed_pwm: Get the current fan speed in PWM.
 	 */
-	int (*get_fan_speed_percent)(struct smu_context *smu, uint32_t *speed);
+	int (*get_fan_speed_pwm)(struct smu_context *smu, uint32_t *speed);
 
 	/**
 	 * @get_fan_speed_rpm: Get the current fan speed in rpm.
@@ -1051,9 +1051,9 @@ struct pptable_funcs {
 	int (*set_fan_control_mode)(struct smu_context *smu, uint32_t mode);
 
 	/**
-	 * @set_fan_speed_percent: Set a static fan speed in percent.
+	 * @set_fan_speed_pwm: Set a static fan speed in PWM.
 	 */
-	int (*set_fan_speed_percent)(struct smu_context *smu, uint32_t speed);
+	int (*set_fan_speed_pwm)(struct smu_context *smu, uint32_t speed);
 
 	/**
 	 * @set_fan_speed_rpm: Set a static fan speed in rpm.
diff --git a/drivers/gpu/drm/amd/pm/inc/hwmgr.h b/drivers/gpu/drm/amd/pm/inc/hwmgr.h
index 490371bd2520..8ed01071fe5a 100644
--- a/drivers/gpu/drm/amd/pm/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/pm/inc/hwmgr.h
@@ -278,9 +278,9 @@ struct pp_hwmgr_func {
 	int (*get_fan_speed_info)(struct pp_hwmgr *hwmgr, struct phm_fan_speed_info *fan_speed_info);
 	void (*set_fan_control_mode)(struct pp_hwmgr *hwmgr, uint32_t mode);
 	uint32_t (*get_fan_control_mode)(struct pp_hwmgr *hwmgr);
-	int (*set_fan_speed_percent)(struct pp_hwmgr *hwmgr, uint32_t percent);
-	int (*get_fan_speed_percent)(struct pp_hwmgr *hwmgr, uint32_t *speed);
-	int (*set_fan_speed_rpm)(struct pp_hwmgr *hwmgr, uint32_t percent);
+	int (*set_fan_speed_pwm)(struct pp_hwmgr *hwmgr, uint32_t speed);
+	int (*get_fan_speed_pwm)(struct pp_hwmgr *hwmgr, uint32_t *speed);
+	int (*set_fan_speed_rpm)(struct pp_hwmgr *hwmgr, uint32_t speed);
 	int (*get_fan_speed_rpm)(struct pp_hwmgr *hwmgr, uint32_t *speed);
 	int (*reset_fan_speed_to_default)(struct pp_hwmgr *hwmgr);
 	int (*uninitialize_thermal_controller)(struct pp_hwmgr *hwmgr);
diff --git a/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h b/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
index bc8d875b526d..cbdae8a2c698 100644
--- a/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
@@ -221,13 +221,13 @@ int
 smu_v11_0_set_fan_control_mode(struct smu_context *smu,
 			       uint32_t mode);
 
-int smu_v11_0_set_fan_speed_percent(struct smu_context *smu,
+int smu_v11_0_set_fan_speed_pwm(struct smu_context *smu,
 				    uint32_t speed);
 
 int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu,
 				uint32_t speed);
 
-int smu_v11_0_get_fan_speed_percent(struct smu_context *smu,
+int smu_v11_0_get_fan_speed_pwm(struct smu_context *smu,
 				    uint32_t *speed);
 
 int smu_v11_0_get_fan_speed_rpm(struct smu_context *smu,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index d2a38246a78a..321215003643 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
@@ -533,7 +533,7 @@ static uint32_t pp_dpm_get_fan_control_mode(void *handle)
 	return mode;
 }
 
-static int pp_dpm_set_fan_speed_percent(void *handle, uint32_t percent)
+static int pp_dpm_set_fan_speed_pwm(void *handle, uint32_t speed)
 {
 	struct pp_hwmgr *hwmgr = handle;
 	int ret = 0;
@@ -541,17 +541,17 @@ static int pp_dpm_set_fan_speed_percent(void *handle, uint32_t percent)
 	if (!hwmgr || !hwmgr->pm_en)
 		return -EINVAL;
 
-	if (hwmgr->hwmgr_func->set_fan_speed_percent == NULL) {
+	if (hwmgr->hwmgr_func->set_fan_speed_pwm == NULL) {
 		pr_info_ratelimited("%s was not implemented.\n", __func__);
 		return 0;
 	}
 	mutex_lock(&hwmgr->smu_lock);
-	ret = hwmgr->hwmgr_func->set_fan_speed_percent(hwmgr, percent);
+	ret = hwmgr->hwmgr_func->set_fan_speed_pwm(hwmgr, speed);
 	mutex_unlock(&hwmgr->smu_lock);
 	return ret;
 }
 
-static int pp_dpm_get_fan_speed_percent(void *handle, uint32_t *speed)
+static int pp_dpm_get_fan_speed_pwm(void *handle, uint32_t *speed)
 {
 	struct pp_hwmgr *hwmgr = handle;
 	int ret = 0;
@@ -559,13 +559,13 @@ static int pp_dpm_get_fan_speed_percent(void *handle, uint32_t *speed)
 	if (!hwmgr || !hwmgr->pm_en)
 		return -EINVAL;
 
-	if (hwmgr->hwmgr_func->get_fan_speed_percent == NULL) {
+	if (hwmgr->hwmgr_func->get_fan_speed_pwm == NULL) {
 		pr_info_ratelimited("%s was not implemented.\n", __func__);
 		return 0;
 	}
 
 	mutex_lock(&hwmgr->smu_lock);
-	ret = hwmgr->hwmgr_func->get_fan_speed_percent(hwmgr, speed);
+	ret = hwmgr->hwmgr_func->get_fan_speed_pwm(hwmgr, speed);
 	mutex_unlock(&hwmgr->smu_lock);
 	return ret;
 }
@@ -1691,8 +1691,8 @@ static const struct amd_pm_funcs pp_dpm_funcs = {
 	.dispatch_tasks = pp_dpm_dispatch_tasks,
 	.set_fan_control_mode = pp_dpm_set_fan_control_mode,
 	.get_fan_control_mode = pp_dpm_get_fan_control_mode,
-	.set_fan_speed_percent = pp_dpm_set_fan_speed_percent,
-	.get_fan_speed_percent = pp_dpm_get_fan_speed_percent,
+	.set_fan_speed_pwm = pp_dpm_set_fan_speed_pwm,
+	.get_fan_speed_pwm = pp_dpm_get_fan_speed_pwm,
 	.get_fan_speed_rpm = pp_dpm_get_fan_speed_rpm,
 	.set_fan_speed_rpm = pp_dpm_set_fan_speed_rpm,
 	.get_pp_num_states = pp_dpm_get_pp_num_states,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index c67718c85e98..465ff8d2a01a 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -3212,7 +3212,7 @@ static int smu7_force_dpm_level(struct pp_hwmgr *hwmgr,
 
 	if (!ret) {
 		if (level == AMD_DPM_FORCED_LEVEL_PROFILE_PEAK && hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_PROFILE_PEAK)
-			smu7_fan_ctrl_set_fan_speed_percent(hwmgr, 100);
+			smu7_fan_ctrl_set_fan_speed_pwm(hwmgr, 255);
 		else if (level != AMD_DPM_FORCED_LEVEL_PROFILE_PEAK && hwmgr->dpm_level == AMD_DPM_FORCED_LEVEL_PROFILE_PEAK)
 			smu7_fan_ctrl_reset_fan_speed_to_default(hwmgr);
 	}
@@ -4988,7 +4988,7 @@ static void smu7_set_fan_control_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
 {
 	switch (mode) {
 	case AMD_FAN_CTRL_NONE:
-		smu7_fan_ctrl_set_fan_speed_percent(hwmgr, 100);
+		smu7_fan_ctrl_set_fan_speed_pwm(hwmgr, 255);
 		break;
 	case AMD_FAN_CTRL_MANUAL:
 		if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
@@ -5692,8 +5692,8 @@ static const struct pp_hwmgr_func smu7_hwmgr_funcs = {
 	.set_max_fan_rpm_output = smu7_set_max_fan_rpm_output,
 	.stop_thermal_controller = smu7_thermal_stop_thermal_controller,
 	.get_fan_speed_info = smu7_fan_ctrl_get_fan_speed_info,
-	.get_fan_speed_percent = smu7_fan_ctrl_get_fan_speed_percent,
-	.set_fan_speed_percent = smu7_fan_ctrl_set_fan_speed_percent,
+	.get_fan_speed_pwm = smu7_fan_ctrl_get_fan_speed_pwm,
+	.set_fan_speed_pwm = smu7_fan_ctrl_set_fan_speed_pwm,
 	.reset_fan_speed_to_default = smu7_fan_ctrl_reset_fan_speed_to_default,
 	.get_fan_speed_rpm = smu7_fan_ctrl_get_fan_speed_rpm,
 	.set_fan_speed_rpm = smu7_fan_ctrl_set_fan_speed_rpm,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c
index 6cfe148ed45b..a6c3610db23e 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c
@@ -51,7 +51,7 @@ int smu7_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
 	return 0;
 }
 
-int smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
+int smu7_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t *speed)
 {
 	uint32_t duty100;
@@ -70,12 +70,9 @@ int smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
 		return -EINVAL;
 
 
-	tmp64 = (uint64_t)duty * 100;
+	tmp64 = (uint64_t)duty * 255;
 	do_div(tmp64, duty100);
-	*speed = (uint32_t)tmp64;
-
-	if (*speed > 100)
-		*speed = 100;
+	*speed = MIN((uint32_t)tmp64, 255);
 
 	return 0;
 }
@@ -199,12 +196,11 @@ int smu7_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
 }
 
 /**
- * smu7_fan_ctrl_set_fan_speed_percent - Set Fan Speed in percent.
+ * smu7_fan_ctrl_set_fan_speed_pwm - Set Fan Speed in PWM.
  * @hwmgr: the address of the powerplay hardware manager.
- * @speed: is the percentage value (0% - 100%) to be set.
- * Exception: Fails is the 100% setting appears to be 0.
+ * @speed: is the pwm value (0 - 255) to be set.
  */
-int smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
+int smu7_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t speed)
 {
 	uint32_t duty100;
@@ -214,8 +210,7 @@ int smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
 	if (hwmgr->thermal_controller.fanInfo.bNoFan)
 		return 0;
 
-	if (speed > 100)
-		speed = 100;
+	speed = MIN(speed, 255);
 
 	if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
 		smu7_fan_ctrl_stop_smc_fan_control(hwmgr);
@@ -227,7 +222,7 @@ int smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
 		return -EINVAL;
 
 	tmp64 = (uint64_t)speed * duty100;
-	do_div(tmp64, 100);
+	do_div(tmp64, 255);
 	duty = (uint32_t)tmp64;
 
 	PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.h
index 42c1ba0fad78..a386a437e1f0 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.h
@@ -41,10 +41,10 @@
 extern int smu7_thermal_get_temperature(struct pp_hwmgr *hwmgr);
 extern int smu7_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr);
 extern int smu7_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr, struct phm_fan_speed_info *fan_speed_info);
-extern int smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr, uint32_t *speed);
+extern int smu7_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr, uint32_t *speed);
 extern int smu7_fan_ctrl_set_default_mode(struct pp_hwmgr *hwmgr);
 extern int smu7_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode);
-extern int smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr, uint32_t speed);
+extern int smu7_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr, uint32_t speed);
 extern int smu7_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr);
 extern int smu7_thermal_ctrl_uninitialize_thermal_controller(struct pp_hwmgr *hwmgr);
 extern int smu7_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed);
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
index f3cd397cb56b..c152a61ddd2c 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
@@ -4199,7 +4199,7 @@ static void vega10_set_fan_control_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
 
 	switch (mode) {
 	case AMD_FAN_CTRL_NONE:
-		vega10_fan_ctrl_set_fan_speed_percent(hwmgr, 100);
+		vega10_fan_ctrl_set_fan_speed_pwm(hwmgr, 255);
 		break;
 	case AMD_FAN_CTRL_MANUAL:
 		if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
@@ -5536,8 +5536,8 @@ static const struct pp_hwmgr_func vega10_hwmgr_funcs = {
 	.force_dpm_level = vega10_dpm_force_dpm_level,
 	.stop_thermal_controller = vega10_thermal_stop_thermal_controller,
 	.get_fan_speed_info = vega10_fan_ctrl_get_fan_speed_info,
-	.get_fan_speed_percent = vega10_fan_ctrl_get_fan_speed_percent,
-	.set_fan_speed_percent = vega10_fan_ctrl_set_fan_speed_percent,
+	.get_fan_speed_pwm = vega10_fan_ctrl_get_fan_speed_pwm,
+	.set_fan_speed_pwm = vega10_fan_ctrl_set_fan_speed_pwm,
 	.reset_fan_speed_to_default =
 			vega10_fan_ctrl_reset_fan_speed_to_default,
 	.get_fan_speed_rpm = vega10_fan_ctrl_get_fan_speed_rpm,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
index 9b46b27bd30c..dad3e3741a4e 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c
@@ -64,7 +64,7 @@ int vega10_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
 	return 0;
 }
 
-int vega10_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
+int vega10_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t *speed)
 {
 	uint32_t current_rpm;
@@ -78,11 +78,11 @@ int vega10_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
 
 	if (hwmgr->thermal_controller.
 			advanceFanControlParameters.usMaxFanRPM != 0)
-		percent = current_rpm * 100 /
+		percent = current_rpm * 255 /
 			hwmgr->thermal_controller.
 			advanceFanControlParameters.usMaxFanRPM;
 
-	*speed = percent > 100 ? 100 : percent;
+	*speed = MIN(percent, 255);
 
 	return 0;
 }
@@ -241,12 +241,11 @@ int vega10_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
 }
 
 /**
- * vega10_fan_ctrl_set_fan_speed_percent - Set Fan Speed in percent.
+ * vega10_fan_ctrl_set_fan_speed_pwm - Set Fan Speed in PWM.
  * @hwmgr:  the address of the powerplay hardware manager.
- * @speed: is the percentage value (0% - 100%) to be set.
- * Exception: Fails is the 100% setting appears to be 0.
+ * @speed: is the percentage value (0 - 255) to be set.
  */
-int vega10_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
+int vega10_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t speed)
 {
 	struct amdgpu_device *adev = hwmgr->adev;
@@ -257,8 +256,7 @@ int vega10_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
 	if (hwmgr->thermal_controller.fanInfo.bNoFan)
 		return 0;
 
-	if (speed > 100)
-		speed = 100;
+	speed = MIN(speed, 255);
 
 	if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
 		vega10_fan_ctrl_stop_smc_fan_control(hwmgr);
@@ -270,7 +268,7 @@ int vega10_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
 		return -EINVAL;
 
 	tmp64 = (uint64_t)speed * duty100;
-	do_div(tmp64, 100);
+	do_div(tmp64, 255);
 	duty = (uint32_t)tmp64;
 
 	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL0,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.h
index 4a0ede7c1f07..6850a21a2991 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.h
@@ -54,12 +54,12 @@ extern int vega10_thermal_get_temperature(struct pp_hwmgr *hwmgr);
 extern int vega10_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr);
 extern int vega10_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
 		struct phm_fan_speed_info *fan_speed_info);
-extern int vega10_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
+extern int vega10_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t *speed);
 extern int vega10_fan_ctrl_set_default_mode(struct pp_hwmgr *hwmgr);
 extern int vega10_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr,
 		uint32_t mode);
-extern int vega10_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
+extern int vega10_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t speed);
 extern int vega10_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr);
 extern int vega10_thermal_ctrl_uninitialize_thermal_controller(
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
index 0f07d17e9641..0cf39c1244b1 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
@@ -2769,7 +2769,7 @@ static void vega20_set_fan_control_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
 {
 	switch (mode) {
 	case AMD_FAN_CTRL_NONE:
-		vega20_fan_ctrl_set_fan_speed_percent(hwmgr, 100);
+		vega20_fan_ctrl_set_fan_speed_pwm(hwmgr, 255);
 		break;
 	case AMD_FAN_CTRL_MANUAL:
 		if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
@@ -4409,8 +4409,8 @@ static const struct pp_hwmgr_func vega20_hwmgr_funcs = {
 	.register_irq_handlers = smu9_register_irq_handlers,
 	.disable_smc_firmware_ctf = vega20_thermal_disable_alert,
 	/* fan control related */
-	.get_fan_speed_percent = vega20_fan_ctrl_get_fan_speed_percent,
-	.set_fan_speed_percent = vega20_fan_ctrl_set_fan_speed_percent,
+	.get_fan_speed_pwm = vega20_fan_ctrl_get_fan_speed_pwm,
+	.set_fan_speed_pwm = vega20_fan_ctrl_set_fan_speed_pwm,
 	.get_fan_speed_info = vega20_fan_ctrl_get_fan_speed_info,
 	.get_fan_speed_rpm = vega20_fan_ctrl_get_fan_speed_rpm,
 	.set_fan_speed_rpm = vega20_fan_ctrl_set_fan_speed_rpm,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c
index 43d754952bd9..f4f4efdbda79 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c
@@ -114,7 +114,7 @@ static int vega20_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
 	return 0;
 }
 
-int vega20_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
+int vega20_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t *speed)
 {
 	struct amdgpu_device *adev = hwmgr->adev;
@@ -129,17 +129,14 @@ int vega20_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
 	if (!duty100)
 		return -EINVAL;
 
-	tmp64 = (uint64_t)duty * 100;
+	tmp64 = (uint64_t)duty * 255;
 	do_div(tmp64, duty100);
-	*speed = (uint32_t)tmp64;
-
-	if (*speed > 100)
-		*speed = 100;
+	*speed = MIN((uint32_t)tmp64, 255);
 
 	return 0;
 }
 
-int vega20_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
+int vega20_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t speed)
 {
 	struct amdgpu_device *adev = hwmgr->adev;
@@ -147,8 +144,7 @@ int vega20_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
 	uint32_t duty;
 	uint64_t tmp64;
 
-	if (speed > 100)
-		speed = 100;
+	speed = MIN(speed, 255);
 
 	if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
 		vega20_fan_ctrl_stop_smc_fan_control(hwmgr);
@@ -160,7 +156,7 @@ int vega20_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
 		return -EINVAL;
 
 	tmp64 = (uint64_t)speed * duty100;
-	do_div(tmp64, 100);
+	do_div(tmp64, 255);
 	duty = (uint32_t)tmp64;
 
 	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL0,
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.h
index 2d1769bbd24e..b18d09cf761e 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.h
@@ -56,9 +56,9 @@ extern int vega20_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr,
 		uint32_t *speed);
 extern int vega20_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr,
 		uint32_t speed);
-extern int vega20_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
+extern int vega20_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t *speed);
-extern int vega20_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
+extern int vega20_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
 		uint32_t speed);
 extern int vega20_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr);
 extern int vega20_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr);
diff --git a/drivers/gpu/drm/amd/pm/powerplay/si_dpm.c b/drivers/gpu/drm/amd/pm/powerplay/si_dpm.c
index 15c0b8af376f..bdbbeb959c68 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/si_dpm.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/si_dpm.c
@@ -6539,7 +6539,7 @@ static int si_fan_ctrl_stop_smc_fan_control(struct amdgpu_device *adev)
 	}
 }
 
-static int si_dpm_get_fan_speed_percent(void *handle,
+static int si_dpm_get_fan_speed_pwm(void *handle,
 				      u32 *speed)
 {
 	u32 duty, duty100;
@@ -6555,17 +6555,14 @@ static int si_dpm_get_fan_speed_percent(void *handle,
 	if (duty100 == 0)
 		return -EINVAL;
 
-	tmp64 = (u64)duty * 100;
+	tmp64 = (u64)duty * 255;
 	do_div(tmp64, duty100);
-	*speed = (u32)tmp64;
-
-	if (*speed > 100)
-		*speed = 100;
+	*speed = MIN((u32)tmp64, 255);
 
 	return 0;
 }
 
-static int si_dpm_set_fan_speed_percent(void *handle,
+static int si_dpm_set_fan_speed_pwm(void *handle,
 				      u32 speed)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -6580,7 +6577,7 @@ static int si_dpm_set_fan_speed_percent(void *handle,
 	if (si_pi->fan_is_controlled_by_smc)
 		return -EINVAL;
 
-	if (speed > 100)
+	if (speed > 255)
 		return -EINVAL;
 
 	duty100 = (RREG32(CG_FDO_CTRL1) & FMAX_DUTY100_MASK) >> FMAX_DUTY100_SHIFT;
@@ -6589,7 +6586,7 @@ static int si_dpm_set_fan_speed_percent(void *handle,
 		return -EINVAL;
 
 	tmp64 = (u64)speed * duty100;
-	do_div(tmp64, 100);
+	do_div(tmp64, 255);
 	duty = (u32)tmp64;
 
 	tmp = RREG32(CG_FDO_CTRL0) & ~FDO_STATIC_DUTY_MASK;
@@ -8059,8 +8056,8 @@ static const struct amd_pm_funcs si_dpm_funcs = {
 	.vblank_too_short = &si_dpm_vblank_too_short,
 	.set_fan_control_mode = &si_dpm_set_fan_control_mode,
 	.get_fan_control_mode = &si_dpm_get_fan_control_mode,
-	.set_fan_speed_percent = &si_dpm_set_fan_speed_percent,
-	.get_fan_speed_percent = &si_dpm_get_fan_speed_percent,
+	.set_fan_speed_pwm = &si_dpm_set_fan_speed_pwm,
+	.get_fan_speed_pwm = &si_dpm_get_fan_speed_pwm,
 	.check_state_equal = &si_check_state_equal,
 	.get_vce_clock_state = amdgpu_get_vce_clock_state,
 	.read_sensor = &si_dpm_read_sensor,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index bce97bffb3e9..3ab1ce4d3419 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -58,7 +58,7 @@ static int smu_handle_task(struct smu_context *smu,
 			   enum amd_pp_task task_id,
 			   bool lock_needed);
 static int smu_reset(struct smu_context *smu);
-static int smu_set_fan_speed_percent(void *handle, u32 speed);
+static int smu_set_fan_speed_pwm(void *handle, u32 speed);
 static int smu_set_fan_control_mode(struct smu_context *smu, int value);
 static int smu_set_power_limit(void *handle, uint32_t limit);
 static int smu_set_fan_speed_rpm(void *handle, uint32_t speed);
@@ -407,16 +407,16 @@ static void smu_restore_dpm_user_profile(struct smu_context *smu)
 	    smu->user_dpm_profile.fan_mode == AMD_FAN_CTRL_NONE) {
 		ret = smu_set_fan_control_mode(smu, smu->user_dpm_profile.fan_mode);
 		if (ret) {
-			smu->user_dpm_profile.fan_speed_percent = 0;
+			smu->user_dpm_profile.fan_speed_pwm = 0;
 			smu->user_dpm_profile.fan_speed_rpm = 0;
 			smu->user_dpm_profile.fan_mode = AMD_FAN_CTRL_AUTO;
 			dev_err(smu->adev->dev, "Failed to set manual fan control mode\n");
 		}
 
-		if (smu->user_dpm_profile.fan_speed_percent) {
-			ret = smu_set_fan_speed_percent(smu, smu->user_dpm_profile.fan_speed_percent);
+		if (smu->user_dpm_profile.fan_speed_pwm) {
+			ret = smu_set_fan_speed_pwm(smu, smu->user_dpm_profile.fan_speed_pwm);
 			if (ret)
-				dev_err(smu->adev->dev, "Failed to set manual fan speed in percent\n");
+				dev_err(smu->adev->dev, "Failed to set manual fan speed in pwm\n");
 		}
 
 		if (smu->user_dpm_profile.fan_speed_rpm) {
@@ -2204,7 +2204,7 @@ static int smu_set_fan_speed_rpm(void *handle, uint32_t speed)
 
 			/* Override custom PWM setting as they cannot co-exist */
 			smu->user_dpm_profile.flags &= ~SMU_CUSTOM_FAN_SPEED_PWM;
-			smu->user_dpm_profile.fan_speed_percent = 0;
+			smu->user_dpm_profile.fan_speed_pwm = 0;
 		}
 	}
 
@@ -2566,7 +2566,7 @@ static int smu_set_fan_control_mode(struct smu_context *smu, int value)
 	/* reset user dpm fan speed */
 	if (!ret && value != AMD_FAN_CTRL_MANUAL &&
 			!(smu->user_dpm_profile.flags & SMU_DPM_USER_PROFILE_RESTORE)) {
-		smu->user_dpm_profile.fan_speed_percent = 0;
+		smu->user_dpm_profile.fan_speed_pwm = 0;
 		smu->user_dpm_profile.fan_speed_rpm = 0;
 		smu->user_dpm_profile.flags &= ~(SMU_CUSTOM_FAN_SPEED_RPM | SMU_CUSTOM_FAN_SPEED_PWM);
 	}
@@ -2582,31 +2582,25 @@ static void smu_pp_set_fan_control_mode(void *handle, u32 value)
 }
 
 
-static int smu_get_fan_speed_percent(void *handle, u32 *speed)
+static int smu_get_fan_speed_pwm(void *handle, u32 *speed)
 {
 	struct smu_context *smu = handle;
 	int ret = 0;
-	uint32_t percent;
 
 	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, &percent);
-		if (!ret) {
-			*speed = percent > 100 ? 100 : percent;
-		}
-	}
+	if (smu->ppt_funcs->get_fan_speed_pwm)
+		ret = smu->ppt_funcs->get_fan_speed_pwm(smu, speed);
 
 	mutex_unlock(&smu->mutex);
 
-
 	return ret;
 }
 
-static int smu_set_fan_speed_percent(void *handle, u32 speed)
+static int smu_set_fan_speed_pwm(void *handle, u32 speed)
 {
 	struct smu_context *smu = handle;
 	int ret = 0;
@@ -2616,13 +2610,11 @@ static int smu_set_fan_speed_percent(void *handle, u32 speed)
 
 	mutex_lock(&smu->mutex);
 
-	if (smu->ppt_funcs->set_fan_speed_percent) {
-		if (speed > 100)
-			speed = 100;
-		ret = smu->ppt_funcs->set_fan_speed_percent(smu, speed);
+	if (smu->ppt_funcs->set_fan_speed_pwm) {
+		ret = smu->ppt_funcs->set_fan_speed_pwm(smu, speed);
 		if (!ret && !(smu->user_dpm_profile.flags & SMU_DPM_USER_PROFILE_RESTORE)) {
 			smu->user_dpm_profile.flags |= SMU_CUSTOM_FAN_SPEED_PWM;
-			smu->user_dpm_profile.fan_speed_percent = speed;
+			smu->user_dpm_profile.fan_speed_pwm = speed;
 
 			/* Override custom RPM setting as they cannot co-exist */
 			smu->user_dpm_profile.flags &= ~SMU_CUSTOM_FAN_SPEED_RPM;
@@ -3063,8 +3055,8 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
 	/* export for sysfs */
 	.set_fan_control_mode    = smu_pp_set_fan_control_mode,
 	.get_fan_control_mode    = smu_get_fan_control_mode,
-	.set_fan_speed_percent   = smu_set_fan_speed_percent,
-	.get_fan_speed_percent   = smu_get_fan_speed_percent,
+	.set_fan_speed_pwm   = smu_set_fan_speed_pwm,
+	.get_fan_speed_pwm   = smu_get_fan_speed_pwm,
 	.force_clock_level       = smu_force_ppclk_levels,
 	.print_clock_levels      = smu_print_ppclk_levels,
 	.force_performance_level = smu_force_performance_level,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
index 5e64b012e1bf..842e2e089055 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
@@ -2270,7 +2270,7 @@ 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 = smu_v11_0_get_fan_speed_percent,
+	.get_fan_speed_pwm = smu_v11_0_get_fan_speed_pwm,
 	.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,
@@ -2316,7 +2316,7 @@ static const struct pptable_funcs arcturus_ppt_funcs = {
 	.display_clock_voltage_request = smu_v11_0_display_clock_voltage_request,
 	.get_fan_control_mode = smu_v11_0_get_fan_control_mode,
 	.set_fan_control_mode = smu_v11_0_set_fan_control_mode,
-	.set_fan_speed_percent = smu_v11_0_set_fan_speed_percent,
+	.set_fan_speed_pwm = smu_v11_0_set_fan_speed_pwm,
 	.set_fan_speed_rpm = smu_v11_0_set_fan_speed_rpm,
 	.set_xgmi_pstate = smu_v11_0_set_xgmi_pstate,
 	.gfx_off_control = smu_v11_0_gfx_off_control,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
index 17f0be97a5ec..f96681700c41 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
@@ -3227,7 +3227,7 @@ 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 = smu_v11_0_get_fan_speed_percent,
+	.get_fan_speed_pwm = smu_v11_0_get_fan_speed_pwm,
 	.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,
@@ -3271,7 +3271,7 @@ static const struct pptable_funcs navi10_ppt_funcs = {
 	.display_clock_voltage_request = smu_v11_0_display_clock_voltage_request,
 	.get_fan_control_mode = smu_v11_0_get_fan_control_mode,
 	.set_fan_control_mode = smu_v11_0_set_fan_control_mode,
-	.set_fan_speed_percent = smu_v11_0_set_fan_speed_percent,
+	.set_fan_speed_pwm = smu_v11_0_set_fan_speed_pwm,
 	.set_fan_speed_rpm = smu_v11_0_set_fan_speed_rpm,
 	.set_xgmi_pstate = smu_v11_0_set_xgmi_pstate,
 	.gfx_off_control = smu_v11_0_gfx_off_control,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index a0fbd5678377..5e292c3f5050 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -3852,7 +3852,7 @@ 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 = smu_v11_0_get_fan_speed_percent,
+	.get_fan_speed_pwm = smu_v11_0_get_fan_speed_pwm,
 	.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,
@@ -3896,7 +3896,7 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
 	.display_clock_voltage_request = smu_v11_0_display_clock_voltage_request,
 	.get_fan_control_mode = smu_v11_0_get_fan_control_mode,
 	.set_fan_control_mode = smu_v11_0_set_fan_control_mode,
-	.set_fan_speed_percent = smu_v11_0_set_fan_speed_percent,
+	.set_fan_speed_pwm = smu_v11_0_set_fan_speed_pwm,
 	.set_fan_speed_rpm = smu_v11_0_set_fan_speed_rpm,
 	.set_xgmi_pstate = smu_v11_0_set_xgmi_pstate,
 	.gfx_off_control = smu_v11_0_gfx_off_control,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
index 19334bb6a8b0..9001952442ba 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
@@ -1200,14 +1200,13 @@ smu_v11_0_set_fan_static_mode(struct smu_context *smu, uint32_t mode)
 }
 
 int
-smu_v11_0_set_fan_speed_percent(struct smu_context *smu, uint32_t speed)
+smu_v11_0_set_fan_speed_pwm(struct smu_context *smu, uint32_t speed)
 {
 	struct amdgpu_device *adev = smu->adev;
 	uint32_t duty100, duty;
 	uint64_t tmp64;
 
-	if (speed > 100)
-		speed = 100;
+	speed = MIN(speed, 255);
 
 	if (smu_v11_0_auto_fan_control(smu, 0))
 		return -EINVAL;
@@ -1218,7 +1217,7 @@ smu_v11_0_set_fan_speed_percent(struct smu_context *smu, uint32_t speed)
 		return -EINVAL;
 
 	tmp64 = (uint64_t)speed * duty100;
-	do_div(tmp64, 100);
+	do_div(tmp64, 255);
 	duty = (uint32_t)tmp64;
 
 	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL0,
@@ -1263,8 +1262,8 @@ int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu,
 	return ret;
 }
 
-int smu_v11_0_get_fan_speed_percent(struct smu_context *smu,
-				    uint32_t *speed)
+int smu_v11_0_get_fan_speed_pwm(struct smu_context *smu,
+				uint32_t *speed)
 {
 	struct amdgpu_device *adev = smu->adev;
 	uint32_t duty100, duty;
@@ -1276,7 +1275,7 @@ int smu_v11_0_get_fan_speed_percent(struct smu_context *smu,
 	 * report the fan speed as 0 PWM if user just requested such.
 	 */
 	if ((smu->user_dpm_profile.flags & SMU_CUSTOM_FAN_SPEED_PWM)
-	     && !smu->user_dpm_profile.fan_speed_percent) {
+	     && !smu->user_dpm_profile.fan_speed_pwm) {
 		*speed = 0;
 		return 0;
 	}
@@ -1288,12 +1287,9 @@ int smu_v11_0_get_fan_speed_percent(struct smu_context *smu,
 	if (!duty100)
 		return -EINVAL;
 
-	tmp64 = (uint64_t)duty * 100;
+	tmp64 = (uint64_t)duty * 255;
 	do_div(tmp64, duty100);
-	*speed = (uint32_t)tmp64;
-
-	if (*speed > 100)
-		*speed = 100;
+	*speed = MIN((uint32_t)tmp64, 255);
 
 	return 0;
 }
@@ -1334,7 +1330,7 @@ smu_v11_0_set_fan_control_mode(struct smu_context *smu,
 
 	switch (mode) {
 	case AMD_FAN_CTRL_NONE:
-		ret = smu_v11_0_set_fan_speed_percent(smu, 100);
+		ret = smu_v11_0_set_fan_speed_pwm(smu, 255);
 		break;
 	case AMD_FAN_CTRL_MANUAL:
 		ret = smu_v11_0_auto_fan_control(smu, 0);