drm/amd/powerplay: refine avfs enable code on fiji.

1. simplify avfs state switch.
2. delete save/restore VFT table functions as not support
   by fiji.
3. implement thermal_avfs_enable funciton.

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

drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.c

@@ -2129,6 +2129,25 @@ int fiji_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
+
+int fiji_thermal_avfs_enable(struct pp_hwmgr *hwmgr)
+{
+	int ret;
+	struct pp_smumgr *smumgr = (struct pp_smumgr *)(hwmgr->smumgr);
+	struct fiji_smumgr *smu_data = (struct fiji_smumgr *)(smumgr->backend);
+
+	if (smu_data->avfs.AvfsBtcStatus != AVFS_BTC_ENABLEAVFS)
+		return 0;
+
+	ret = smum_send_msg_to_smc(smumgr, PPSMC_MSG_EnableAvfs);
+
+	if (!ret)
+		/* If this param is not changed, this function could fire unnecessarily */
+		smu_data->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_PREVIOUSLY;
+
+	return ret;
+}
+
 static int fiji_program_mem_timing_parameters(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);

drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.h

@@ -48,5 +48,6 @@ int fiji_initialize_mc_reg_table(struct pp_hwmgr *hwmgr);
 bool fiji_is_dpm_running(struct pp_hwmgr *hwmgr);
 int fiji_populate_requested_graphic_levels(struct pp_hwmgr *hwmgr,
 		struct amd_pp_profile *request);
+int fiji_thermal_avfs_enable(struct pp_hwmgr *hwmgr);
 #endif
 

drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c

@@ -194,22 +194,10 @@ static int fiji_start_avfs_btc(struct pp_smumgr *smumgr)
 	int result = 0;
 	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
 
-	priv->avfs.AvfsBtcStatus = AVFS_BTC_STARTED;
 	if (priv->avfs.AvfsBtcParam) {
 		if (!smum_send_msg_to_smc_with_parameter(smumgr,
 				PPSMC_MSG_PerformBtc, priv->avfs.AvfsBtcParam)) {
-			if (!smum_send_msg_to_smc(smumgr, PPSMC_MSG_EnableAvfs)) {
-				priv->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_UNSAVED;
-				result = 0;
-			} else {
-				pr_err("[AVFS][fiji_start_avfs_btc] Attempt"
-						" to Enable AVFS Failed!");
-				smum_send_msg_to_smc(smumgr, PPSMC_MSG_DisableAvfs);
-				result = -1;
-			}
-		} else {
-			pr_err("[AVFS][fiji_start_avfs_btc] "
-					"PerformBTC SMU msg failed");
+			pr_err("PerformBTC SMU msg failed \n");
 			result = -1;
 		}
 	}
@@ -224,42 +212,6 @@ static int fiji_start_avfs_btc(struct pp_smumgr *smumgr)
 	return result;
 }
 
-static int fiji_setup_pm_fuse_for_avfs(struct pp_smumgr *smumgr)
-{
-	int result = 0;
-	uint32_t table_start;
-	uint32_t charz_freq_addr, inversion_voltage_addr, charz_freq;
-	uint16_t inversion_voltage;
-
-	charz_freq = 0x30750000; /* In 10KHz units 0x00007530 Actual value */
-	inversion_voltage = 0x1A04; /* mV Q14.2 0x41A Actual value */
-
-	PP_ASSERT_WITH_CODE(0 == smu7_read_smc_sram_dword(smumgr,
-			SMU7_FIRMWARE_HEADER_LOCATION + offsetof(SMU73_Firmware_Header,
-					PmFuseTable), &table_start, 0x40000),
-			"[AVFS][Fiji_SetupGfxLvlStruct] SMU could not communicate "
-			"starting address of PmFuse structure",
-			return -1;);
-
-	charz_freq_addr = table_start +
-			offsetof(struct SMU73_Discrete_PmFuses, PsmCharzFreq);
-	inversion_voltage_addr = table_start +
-			offsetof(struct SMU73_Discrete_PmFuses, InversionVoltage);
-
-	result = smu7_copy_bytes_to_smc(smumgr, charz_freq_addr,
-			(uint8_t *)(&charz_freq), sizeof(charz_freq), 0x40000);
-	PP_ASSERT_WITH_CODE(0 == result,
-			"[AVFS][fiji_setup_pm_fuse_for_avfs] charz_freq could not "
-			"be populated.", return -1;);
-
-	result = smu7_copy_bytes_to_smc(smumgr, inversion_voltage_addr,
-			(uint8_t *)(&inversion_voltage), sizeof(inversion_voltage), 0x40000);
-	PP_ASSERT_WITH_CODE(0 == result, "[AVFS][fiji_setup_pm_fuse_for_avfs] "
-			"charz_freq could not be populated.", return -1;);
-
-	return result;
-}
-
 static int fiji_setup_graphics_level_structure(struct pp_smumgr *smumgr)
 {
 	int32_t vr_config;
@@ -298,67 +250,18 @@ static int fiji_setup_graphics_level_structure(struct pp_smumgr *smumgr)
 	return 0;
 }
 
-/* Work in Progress */
-static int fiji_restore_vft_table(struct pp_smumgr *smumgr)
-{
-	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
-
-	if (AVFS_BTC_COMPLETED_SAVED == priv->avfs.AvfsBtcStatus) {
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_RESTORED;
-		return 0;
-	} else
-		return -EINVAL;
-}
-
-/* Work in Progress */
-static int fiji_save_vft_table(struct pp_smumgr *smumgr)
-{
-	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
-
-	if (AVFS_BTC_COMPLETED_SAVED == priv->avfs.AvfsBtcStatus) {
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_RESTORED;
-		return 0;
-	} else
-		return -EINVAL;
-}
-
 static int fiji_avfs_event_mgr(struct pp_smumgr *smumgr, bool smu_started)
 {
 	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
 
 	switch (priv->avfs.AvfsBtcStatus) {
-	case AVFS_BTC_COMPLETED_SAVED: /*S3 State - Pre SMU Start */
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_RESTOREVFT_FAILED;
-		PP_ASSERT_WITH_CODE(0 == fiji_restore_vft_table(smumgr),
-				"[AVFS][fiji_avfs_event_mgr] Could not Copy Graphics "
-				"Level table over to SMU",
-				return -1;);
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_RESTORED;
-		break;
-	case AVFS_BTC_COMPLETED_RESTORED: /*S3 State - Post SMU Start*/
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_SMUMSG_ERROR;
-		PP_ASSERT_WITH_CODE(0 == smum_send_msg_to_smc(smumgr,
-				0x666),
-				"[AVFS][fiji_avfs_event_mgr] SMU did not respond "
-				"correctly to VftTableIsValid Msg",
-				return -1;);
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_SMUMSG_ERROR;
-		PP_ASSERT_WITH_CODE(0 == smum_send_msg_to_smc(smumgr,
-				PPSMC_MSG_EnableAvfs),
-				"[AVFS][fiji_avfs_event_mgr] SMU did not respond "
-				"correctly to EnableAvfs Message Msg",
-				return -1;);
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_SAVED;
+	case AVFS_BTC_COMPLETED_PREVIOUSLY:
 		break;
+
 	case AVFS_BTC_BOOT: /*Cold Boot State - Post SMU Start*/
 		if (!smu_started)
 			break;
 		priv->avfs.AvfsBtcStatus = AVFS_BTC_FAILED;
-		PP_ASSERT_WITH_CODE(0 == fiji_setup_pm_fuse_for_avfs(smumgr),
-				"[AVFS][fiji_avfs_event_mgr] Failure at "
-				"fiji_setup_pm_fuse_for_avfs",
-				return -1;);
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_DPMTABLESETUP_FAILED;
 		PP_ASSERT_WITH_CODE(0 == fiji_setup_graphics_level_structure(smumgr),
 				"[AVFS][fiji_avfs_event_mgr] Could not Copy Graphics Level"
 				" table over to SMU",
@@ -373,18 +276,15 @@ static int fiji_avfs_event_mgr(struct pp_smumgr *smumgr, bool smu_started)
 				"[AVFS][fiji_avfs_event_mgr] Failure at "
 				"fiji_start_avfs_btc. AVFS Disabled",
 				return -1;);
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_SAVEVFT_FAILED;
-		PP_ASSERT_WITH_CODE(0 == fiji_save_vft_table(smumgr),
-				"[AVFS][fiji_avfs_event_mgr] Could not save VFT Table",
-				return -1;);
-		priv->avfs.AvfsBtcStatus = AVFS_BTC_COMPLETED_SAVED;
+
+		priv->avfs.AvfsBtcStatus =  AVFS_BTC_ENABLEAVFS;
 		break;
 	case AVFS_BTC_DISABLED: /* Do nothing */
-		break;
 	case AVFS_BTC_NOTSUPPORTED: /* Do nothing */
+	case AVFS_BTC_ENABLEAVFS:
 		break;
 	default:
-		pr_err("[AVFS] Something is broken. See log!");
+		pr_err("AVFS failed status is %x !\n", priv->avfs.AvfsBtcStatus);
 		break;
 	}
 	return 0;
@@ -514,6 +414,7 @@ const struct pp_smumgr_func fiji_smu_funcs = {
 	.init_smc_table = fiji_init_smc_table,
 	.update_sclk_threshold = fiji_update_sclk_threshold,
 	.thermal_setup_fan_table = fiji_thermal_setup_fan_table,
+	.thermal_avfs_enable = fiji_thermal_avfs_enable,
 	.populate_all_graphic_levels = fiji_populate_all_graphic_levels,
 	.populate_all_memory_levels = fiji_populate_all_memory_levels,
 	.get_mac_definition = fiji_get_mac_definition,