drm/amd/powerplay/vega20: enable fan RPM and pwm settings V2

Manual fan RPM and pwm setting on vega20 are
available now.

V2: correct the register for fan speed setting and
    avoid divide-by-zero

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/include/asic_reg/thm/thm_11_0_2_offset.h

@@ -26,6 +26,18 @@
 #define mmCG_MULT_THERMAL_STATUS                                                                       0x005f
 #define mmCG_MULT_THERMAL_STATUS_BASE_IDX                                                              0
 
+#define mmCG_FDO_CTRL0                                                                                 0x0067
+#define mmCG_FDO_CTRL0_BASE_IDX                                                                        0
+
+#define mmCG_FDO_CTRL1                                                                                 0x0068
+#define mmCG_FDO_CTRL1_BASE_IDX                                                                        0
+
+#define mmCG_FDO_CTRL2                                                                                 0x0069
+#define mmCG_FDO_CTRL2_BASE_IDX                                                                        0
+
+#define mmCG_TACH_CTRL                                                                                 0x006a
+#define mmCG_TACH_CTRL_BASE_IDX                                                                        0
+
 #define mmTHM_THERMAL_INT_ENA                                                                          0x000a
 #define mmTHM_THERMAL_INT_ENA_BASE_IDX                                                                 0
 #define mmTHM_THERMAL_INT_CTRL                                                                         0x000b

drivers/gpu/drm/amd/include/asic_reg/thm/thm_11_0_2_sh_mask.h

@@ -28,6 +28,16 @@
 #define CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT                                                               0x9
 #define CG_MULT_THERMAL_STATUS__ASIC_MAX_TEMP_MASK                                                            0x000001FFL
 #define CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK                                                                 0x0003FE00L
+#define CG_FDO_CTRL2__TMIN__SHIFT                                                                             0x0
+#define CG_FDO_CTRL2__TMIN_MASK                                                                               0x000000FFL
+#define CG_FDO_CTRL2__FDO_PWM_MODE__SHIFT                                                                     0xb
+#define CG_FDO_CTRL2__FDO_PWM_MODE_MASK                                                                       0x00003800L
+#define CG_FDO_CTRL1__FMAX_DUTY100__SHIFT                                                                     0x0
+#define CG_FDO_CTRL1__FMAX_DUTY100_MASK                                                                       0x000000FFL
+#define CG_FDO_CTRL0__FDO_STATIC_DUTY__SHIFT                                                                  0x0
+#define CG_FDO_CTRL0__FDO_STATIC_DUTY_MASK                                                                    0x000000FFL
+#define CG_TACH_CTRL__TARGET_PERIOD__SHIFT                                                                    0x3
+#define CG_TACH_CTRL__TARGET_PERIOD_MASK                                                                      0xFFFFFFF8L
 
 //THM_THERMAL_INT_ENA
 #define THM_THERMAL_INT_ENA__THERM_INTH_SET__SHIFT                                                            0x0

drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c

@@ -2289,6 +2289,25 @@ static uint32_t vega20_get_fan_control_mode(struct pp_hwmgr *hwmgr)
 		return AMD_FAN_CTRL_AUTO;
 }
 
+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);
+		break;
+	case AMD_FAN_CTRL_MANUAL:
+		if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
+			vega20_fan_ctrl_stop_smc_fan_control(hwmgr);
+		break;
+	case AMD_FAN_CTRL_AUTO:
+		if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
+			vega20_fan_ctrl_start_smc_fan_control(hwmgr);
+		break;
+	default:
+		break;
+	}
+}
+
 static int vega20_get_dal_power_level(struct pp_hwmgr *hwmgr,
 		struct amd_pp_simple_clock_info *info)
 {
@@ -3452,12 +3471,20 @@ static const struct pp_hwmgr_func vega20_hwmgr_funcs = {
 	.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_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,
 	.get_fan_control_mode =
 		vega20_get_fan_control_mode,
+	.set_fan_control_mode =
+		vega20_set_fan_control_mode,
 	/* smu memory related */
 	.notify_cac_buffer_info =
 		vega20_notify_cac_buffer_info,

drivers/gpu/drm/amd/powerplay/hwmgr/vega20_thermal.c

@@ -29,6 +29,78 @@
 #include "soc15_common.h"
 #include "pp_debug.h"
 
+static int vega20_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
+{
+	struct vega20_hwmgr *data = hwmgr->backend;
+	int ret = 0;
+
+	if (data->smu_features[GNLD_FAN_CONTROL].supported) {
+		ret = vega20_enable_smc_features(
+				hwmgr, false,
+				data->smu_features[GNLD_FAN_CONTROL].
+				smu_feature_bitmap);
+		PP_ASSERT_WITH_CODE(!ret,
+				"Disable FAN CONTROL feature Failed!",
+				return ret);
+		data->smu_features[GNLD_FAN_CONTROL].enabled = false;
+	}
+
+	return ret;
+}
+
+int vega20_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
+{
+	struct vega20_hwmgr *data = hwmgr->backend;
+
+	if (data->smu_features[GNLD_FAN_CONTROL].supported)
+		return vega20_disable_fan_control_feature(hwmgr);
+
+	return 0;
+}
+
+static int vega20_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
+{
+	struct vega20_hwmgr *data = hwmgr->backend;
+	int ret = 0;
+
+	if (data->smu_features[GNLD_FAN_CONTROL].supported) {
+		ret = vega20_enable_smc_features(
+				hwmgr, true,
+				data->smu_features[GNLD_FAN_CONTROL].
+				smu_feature_bitmap);
+		PP_ASSERT_WITH_CODE(!ret,
+				"Enable FAN CONTROL feature Failed!",
+				return ret);
+		data->smu_features[GNLD_FAN_CONTROL].enabled = true;
+	}
+
+	return ret;
+}
+
+int vega20_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
+{
+	struct vega20_hwmgr *data = hwmgr->backend;
+
+	if (data->smu_features[GNLD_FAN_CONTROL].supported)
+		return vega20_enable_fan_control_feature(hwmgr);
+
+	return 0;
+}
+
+static int vega20_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+
+	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
+			REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
+				CG_FDO_CTRL2, TMIN, 0));
+	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
+			REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
+				CG_FDO_CTRL2, FDO_PWM_MODE, mode));
+
+	return 0;
+}
+
 static int vega20_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
 {
 	int ret = 0;
@@ -42,12 +114,62 @@ 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,
+		uint32_t *speed)
+{
+	struct vega20_hwmgr *data = (struct vega20_hwmgr *)(hwmgr->backend);
+	PPTable_t *pp_table = &(data->smc_state_table.pp_table);
+	uint32_t current_rpm, percent = 0;
+	int ret = 0;
+
+	ret = vega20_get_current_rpm(hwmgr, &current_rpm);
+	if (ret)
+		return ret;
+
+	percent = current_rpm * 100 / pp_table->FanMaximumRpm;
+
+	*speed = percent > 100 ? 100 : percent;
+
+	return 0;
+}
+
+int vega20_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
+		uint32_t speed)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+	uint32_t duty100;
+	uint32_t duty;
+	uint64_t tmp64;
+
+	if (speed > 100)
+		speed = 100;
+
+	if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
+		vega20_fan_ctrl_stop_smc_fan_control(hwmgr);
+
+	duty100 = REG_GET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL1),
+				    CG_FDO_CTRL1, FMAX_DUTY100);
+
+	if (duty100 == 0)
+		return -EINVAL;
+
+	tmp64 = (uint64_t)speed * duty100;
+	do_div(tmp64, 100);
+	duty = (uint32_t)tmp64;
+
+	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL0,
+		REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL0),
+			CG_FDO_CTRL0, FDO_STATIC_DUTY, duty));
+
+	return vega20_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
+}
+
 int vega20_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
 		struct phm_fan_speed_info *fan_speed_info)
 {
 	memset(fan_speed_info, 0, sizeof(*fan_speed_info));
-	fan_speed_info->supports_percent_read = false;
-	fan_speed_info->supports_percent_write = false;
+	fan_speed_info->supports_percent_read = true;
+	fan_speed_info->supports_percent_write = true;
 	fan_speed_info->supports_rpm_read = true;
 	fan_speed_info->supports_rpm_write = true;
 
@@ -61,6 +183,31 @@ int vega20_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
 	return vega20_get_current_rpm(hwmgr, speed);
 }
 
+int vega20_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+	uint32_t tach_period, crystal_clock_freq;
+	int result = 0;
+
+	if (!speed)
+		return -EINVAL;
+
+	if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) {
+		result = vega20_fan_ctrl_stop_smc_fan_control(hwmgr);
+		if (result)
+			return result;
+	}
+
+	crystal_clock_freq = amdgpu_asic_get_xclk((struct amdgpu_device *)hwmgr->adev);
+	tach_period = 60 * crystal_clock_freq * 10000 / (8 * speed);
+	WREG32_SOC15(THM, 0, mmCG_TACH_CTRL,
+			REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_TACH_CTRL),
+				CG_TACH_CTRL, TARGET_PERIOD,
+				tach_period));
+
+	return vega20_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC_RPM);
+}
+
 /**
 * Reads the remote temperature from the SIslands thermal controller.
 *

drivers/gpu/drm/amd/powerplay/hwmgr/vega20_thermal.h

@@ -50,15 +50,22 @@ struct vega20_temperature {
 #define FDO_PWM_MODE_STATIC_RPM 5
 
 extern int vega20_thermal_get_temperature(struct pp_hwmgr *hwmgr);
-extern int vega20_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr);
 extern int vega20_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
 		struct phm_fan_speed_info *fan_speed_info);
-extern int vega20_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr);
 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,
+		uint32_t *speed);
+extern int vega20_fan_ctrl_set_fan_speed_percent(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);
 extern int vega20_thermal_disable_alert(struct pp_hwmgr *hwmgr);
 extern int vega20_start_thermal_controller(struct pp_hwmgr *hwmgr,
 				struct PP_TemperatureRange *range);
+extern int vega20_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr);
 
 #endif