drm/amdgpu: add powercontainment module parameter

This patch makes powercontainment feature configurable. Currently, the
powercontainment is not very stable, so add a module parameter to
enable/disable it via user mode.

Signed-off-by: Huang Rui <[e-mail]>
Reviewed-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

···
 extern int amdgpu_sched_jobs;
 extern int amdgpu_sched_hw_submission;
 extern int amdgpu_powerplay;
+extern int amdgpu_powercontainment;
 extern unsigned amdgpu_pcie_gen_cap;
 extern unsigned amdgpu_pcie_lane_cap;
 

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

···
 int amdgpu_sched_jobs = 32;
 int amdgpu_sched_hw_submission = 2;
 int amdgpu_powerplay = -1;
+int amdgpu_powercontainment = 1;
 unsigned amdgpu_pcie_gen_cap = 0;
 unsigned amdgpu_pcie_lane_cap = 0;
 
···
 #ifdef CONFIG_DRM_AMD_POWERPLAY
 MODULE_PARM_DESC(powerplay, "Powerplay component (1 = enable, 0 = disable, -1 = auto (default))");
 module_param_named(powerplay, amdgpu_powerplay, int, 0444);
+
+MODULE_PARM_DESC(powercontainment, "Power Containment (1 = enable (default), 0 = disable)");
+module_param_named(powercontainment, amdgpu_powercontainment, int, 0444);
 #endif
 
 MODULE_PARM_DESC(pcie_gen_cap, "PCIE Gen Caps (0: autodetect (default))");

drivers/gpu/drm/amd/amdgpu/amdgpu_powerplay.c

···
 		pp_init->chip_family = adev->family;
 		pp_init->chip_id = adev->asic_type;
 		pp_init->device = amdgpu_cgs_create_device(adev);
+		pp_init->powercontainment_enabled = amdgpu_powercontainment;
 
 		ret = amd_powerplay_init(pp_init, amd_pp);
 		kfree(pp_init);

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

···
 
 	if (!tmp) {
 		phm_cap_set(hwmgr->platform_descriptor.platformCaps,
-				PHM_PlatformCaps_PowerContainment);
-
-		phm_cap_set(hwmgr->platform_descriptor.platformCaps,
 				PHM_PlatformCaps_CAC);
 
 		fiji_hwmgr->fast_watermark_threshold = 100;
 
-		tmp = 1;
-		fiji_hwmgr->enable_dte_feature = tmp ? false : true;
-		fiji_hwmgr->enable_tdc_limit_feature = tmp ? true : false;
-		fiji_hwmgr->enable_pkg_pwr_tracking_feature = tmp ? true : false;
+		if (hwmgr->powercontainment_enabled) {
+			phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+				    PHM_PlatformCaps_PowerContainment);
+			tmp = 1;
+			fiji_hwmgr->enable_dte_feature = tmp ? false : true;
+			fiji_hwmgr->enable_tdc_limit_feature = tmp ? true : false;
+			fiji_hwmgr->enable_pkg_pwr_tracking_feature = tmp ? true : false;
+		}
 	}
 }
 

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

···
 	hwmgr->hw_revision = pp_init->rev_id;
 	hwmgr->usec_timeout = AMD_MAX_USEC_TIMEOUT;
 	hwmgr->power_source = PP_PowerSource_AC;
+	hwmgr->powercontainment_enabled = pp_init->powercontainment_enabled;
 
 	switch (hwmgr->chip_family) {
 	case AMD_FAMILY_CZ:

drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c

···
 	phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
 						PHM_PlatformCaps_TCPRamping);
 
-	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
-					PHM_PlatformCaps_PowerContainment);
+	if (hwmgr->powercontainment_enabled)
+		phm_cap_set(hwmgr->platform_descriptor.platformCaps,
+			    PHM_PlatformCaps_PowerContainment);
+	else
+		phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
+			    PHM_PlatformCaps_PowerContainment);
+
 	phm_cap_set(hwmgr->platform_descriptor.platformCaps,
 							PHM_PlatformCaps_CAC);
 

drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h

···
 	uint32_t chip_family;
 	uint32_t chip_id;
 	uint32_t rev_id;
+	bool powercontainment_enabled;
 };
 enum amd_pp_display_config_type{
 	AMD_PP_DisplayConfigType_None = 0,

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

···
 	uint32_t num_ps;
 	struct pp_thermal_controller_info thermal_controller;
 	bool fan_ctrl_is_in_default_mode;
+	bool powercontainment_enabled;
 	uint32_t fan_ctrl_default_mode;
 	uint32_t tmin;
 	struct phm_microcode_version_info microcode_version_info;