drm/amd/powerplay: display gpu load when print performance for tonga.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>

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

@@ -5148,7 +5148,9 @@ static int tonga_get_pp_table_entry(struct pp_hwmgr *hwmgr,
 static void
 tonga_print_current_perforce_level(struct pp_hwmgr *hwmgr, struct seq_file *m)
 {
-	uint32_t sclk, mclk;
+	uint32_t sclk, mclk, active_percent;
+	uint32_t offset;
+	struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
 
 	smum_send_msg_to_smc(hwmgr->smumgr, (PPSMC_Msg)(PPSMC_MSG_API_GetSclkFrequency));
 
@@ -5158,6 +5160,15 @@ tonga_print_current_perforce_level(struct pp_hwmgr *hwmgr, struct seq_file *m)
 
 	mclk = cgs_read_register(hwmgr->device, mmSMC_MSG_ARG_0);
 	seq_printf(m, "\n [  mclk  ]: %u MHz\n\n [  sclk  ]: %u MHz\n", mclk/100, sclk/100);
+
+
+	offset = data->soft_regs_start + offsetof(SMU72_SoftRegisters, AverageGraphicsActivity);
+	active_percent = cgs_read_ind_register(hwmgr->device, CGS_IND_REG__SMC, offset);
+	active_percent += 80;
+	active_percent >>= 8;
+
+	seq_printf(m, "\n [GPU load]: %u%%\n\n", active_percent > 100 ? 100 : active_percent);
+
 }
 
 static int tonga_find_dpm_states_clocks_in_dpm_table(struct pp_hwmgr *hwmgr, const void *input)