drm/amd/powerplay: add GFX per cu powergating for Baffin

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -398,3 +398,31 @@ int ellesmere_phm_update_clock_gatings(struct pp_hwmgr *hwmgr,
 
 	return 0;
 }
+
+/* This function is for Baffin only for now,
+ * Powerplay will only control the static per CU Power Gating.
+ * Dynamic per CU Power Gating will be done in gfx.
+ */
+int ellesmere_phm_enable_per_cu_power_gating(struct pp_hwmgr *hwmgr, bool enable)
+{
+	struct cgs_system_info sys_info = {0};
+	uint32_t active_cus;
+	int result;
+
+	sys_info.size = sizeof(struct cgs_system_info);
+	sys_info.info_id = CGS_SYSTEM_INFO_GFX_CU_INFO;
+
+	result = cgs_query_system_info(hwmgr->device, &sys_info);
+
+	if (result)
+		return -EINVAL;
+	else
+		active_cus = sys_info.value;
+
+	if (enable)
+		return smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_GFX_CU_PG_ENABLE, active_cus);
+	else
+		return smum_send_msg_to_smc(hwmgr->smumgr,
+				PPSMC_MSG_GFX_CU_PG_DISABLE);
+}

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

@@ -35,5 +35,6 @@ int ellesmere_phm_powergate_acp(struct pp_hwmgr *hwmgr, bool bgate);
 int ellesmere_phm_disable_clock_power_gating(struct pp_hwmgr *hwmgr);
 int ellesmere_phm_update_clock_gatings(struct pp_hwmgr *hwmgr,
 					const uint32_t *msg_id);
+int ellesmere_phm_enable_per_cu_power_gating(struct pp_hwmgr *hwmgr, bool enable);
 
 #endif /* _ELLESMERE_CLOCK_POWER_GATING_H_ */

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

@@ -4687,6 +4687,11 @@ static const struct pp_hwmgr_func ellesmere_hwmgr_funcs = {
 	.register_internal_thermal_interrupt = ellesmere_register_internal_thermal_interrupt,
 	.check_smc_update_required_for_display_configuration = ellesmere_check_smc_update_required_for_display_configuration,
 	.check_states_equal = ellesmere_check_states_equal,
+	.get_pp_table = ellesmere_get_pp_table,
+	.set_pp_table = ellesmere_set_pp_table,
+	.force_clock_level = ellesmere_force_clock_level,
+	.print_clock_levels = ellesmere_print_clock_levels,
+	.enable_per_cu_power_gating = ellesmere_phm_enable_per_cu_power_gating,
 };
 
 int ellesemere_hwmgr_init(struct pp_hwmgr *hwmgr)