drm/amd/powerplay: mark symbols static where possible

We get a few warnings when building kernel with W=1:
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/fiji_smumgr.c:162:5: warning: no previous prototype for 'fiji_setup_pwr_virus' [-Wmissing-prototypes]
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/fiji_smc.c:2052:5: warning: no previous prototype for 'fiji_program_mem_timing_parameters' [-Wmissing-prototypes]
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/polaris10_smumgr.c:175:5: warning: no previous prototype for 'polaris10_avfs_event_mgr' [-Wmissing-prototypes]
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/cz_hwmgr.c:69:10: warning: no previous prototype for 'cz_get_eclk_level' [-Wmissing-prototypes]
drivers/gpu/drm/amd/amdgpu/../powerplay/hwmgr/smu7_hwmgr.c:92:26: warning: no previous prototype for 'cast_phw_smu7_power_state' [-Wmissing-prototypes]
....

In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static.
So this patch marks these functions with 'static'.
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -436,7 +436,8 @@ static enum PP_StateUILabel power_state_convert(enum amd_pm_state_type  state)
 	}
 }
 
-int pp_dpm_dispatch_tasks(void *handle, enum amd_pp_event event_id, void *input, void *output)
+static int pp_dpm_dispatch_tasks(void *handle, enum amd_pp_event event_id,
+		void *input, void *output)
 {
 	int ret = 0;
 	struct pp_instance *pp_handle;
@@ -475,7 +476,7 @@ int pp_dpm_dispatch_tasks(void *handle, enum amd_pp_event event_id, void *input,
 	return ret;
 }
 
-enum amd_pm_state_type pp_dpm_get_current_power_state(void *handle)
+static enum amd_pm_state_type pp_dpm_get_current_power_state(void *handle)
 {
 	struct pp_hwmgr *hwmgr;
 	struct pp_power_state *state;

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

@@ -66,7 +66,7 @@ static const struct cz_power_state *cast_const_PhwCzPowerState(
 	return (struct cz_power_state *)hw_ps;
 }
 
-uint32_t cz_get_eclk_level(struct pp_hwmgr *hwmgr,
+static uint32_t cz_get_eclk_level(struct pp_hwmgr *hwmgr,
 					uint32_t clock, uint32_t msg)
 {
 	int i = 0;
@@ -1017,7 +1017,7 @@ static int cz_tf_program_bootup_state(struct pp_hwmgr *hwmgr, void *input,
 	return 0;
 }
 
-int cz_tf_reset_acp_boot_level(struct pp_hwmgr *hwmgr, void *input,
+static int cz_tf_reset_acp_boot_level(struct pp_hwmgr *hwmgr, void *input,
 				void *output, void *storage, int result)
 {
 	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
@@ -1225,7 +1225,7 @@ static int cz_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int cz_phm_force_dpm_highest(struct pp_hwmgr *hwmgr)
+static int cz_phm_force_dpm_highest(struct pp_hwmgr *hwmgr)
 {
 	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 
@@ -1239,7 +1239,7 @@ int cz_phm_force_dpm_highest(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int cz_phm_unforce_dpm_levels(struct pp_hwmgr *hwmgr)
+static int cz_phm_unforce_dpm_levels(struct pp_hwmgr *hwmgr)
 {
 	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 	struct phm_clock_voltage_dependency_table *table =
@@ -1277,7 +1277,7 @@ int cz_phm_unforce_dpm_levels(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int cz_phm_force_dpm_lowest(struct pp_hwmgr *hwmgr)
+static int cz_phm_force_dpm_lowest(struct pp_hwmgr *hwmgr)
 {
 	struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 
@@ -1533,7 +1533,7 @@ static int cz_dpm_get_pp_table_entry(struct pp_hwmgr *hwmgr,
 	return result;
 }
 
-int cz_get_power_state_size(struct pp_hwmgr *hwmgr)
+static int cz_get_power_state_size(struct pp_hwmgr *hwmgr)
 {
 	return sizeof(struct cz_power_state);
 }

drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c

@@ -131,7 +131,7 @@ static int set_platform_caps(struct pp_hwmgr *hwmgr, uint32_t powerplay_caps)
 /**
  * Private Function to get the PowerPlay Table Address.
  */
-const void *get_powerplay_table(struct pp_hwmgr *hwmgr)
+static const void *get_powerplay_table(struct pp_hwmgr *hwmgr)
 {
 	int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
 
@@ -1049,7 +1049,7 @@ static int check_powerplay_tables(
 	return 0;
 }
 
-int pp_tables_v1_0_initialize(struct pp_hwmgr *hwmgr)
+static int pp_tables_v1_0_initialize(struct pp_hwmgr *hwmgr)
 {
 	int result = 0;
 	const ATOM_Tonga_POWERPLAYTABLE *powerplay_table;
@@ -1100,7 +1100,7 @@ int pp_tables_v1_0_initialize(struct pp_hwmgr *hwmgr)
 	return result;
 }
 
-int pp_tables_v1_0_uninitialize(struct pp_hwmgr *hwmgr)
+static int pp_tables_v1_0_uninitialize(struct pp_hwmgr *hwmgr)
 {
 	struct phm_ppt_v1_information *pp_table_information =
 		(struct phm_ppt_v1_information *)(hwmgr->pptable);

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

@@ -1507,7 +1507,7 @@ static int init_phase_shedding_table(struct pp_hwmgr *hwmgr,
 	return 0;
 }
 
-int get_number_of_vce_state_table_entries(
+static int get_number_of_vce_state_table_entries(
 						  struct pp_hwmgr *hwmgr)
 {
 	const ATOM_PPLIB_POWERPLAYTABLE *table =
@@ -1521,7 +1521,7 @@ int get_number_of_vce_state_table_entries(
 	return 0;
 }
 
-int get_vce_state_table_entry(struct pp_hwmgr *hwmgr,
+static int get_vce_state_table_entry(struct pp_hwmgr *hwmgr,
 							unsigned long i,
 							struct pp_vce_state *vce_state,
 							void **clock_info,

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_clockpowergating.c

@@ -75,7 +75,7 @@ int smu7_powerdown_uvd(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_powerup_uvd(struct pp_hwmgr *hwmgr)
+static int smu7_powerup_uvd(struct pp_hwmgr *hwmgr)
 {
 	if (phm_cf_want_uvd_power_gating(hwmgr)) {
 		if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
@@ -91,7 +91,7 @@ int smu7_powerup_uvd(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_powerdown_vce(struct pp_hwmgr *hwmgr)
+static int smu7_powerdown_vce(struct pp_hwmgr *hwmgr)
 {
 	if (phm_cf_want_vce_power_gating(hwmgr))
 		return smum_send_msg_to_smc(hwmgr->smumgr,
@@ -99,7 +99,7 @@ int smu7_powerdown_vce(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_powerup_vce(struct pp_hwmgr *hwmgr)
+static int smu7_powerup_vce(struct pp_hwmgr *hwmgr)
 {
 	if (phm_cf_want_vce_power_gating(hwmgr))
 		return smum_send_msg_to_smc(hwmgr->smumgr,
@@ -107,7 +107,7 @@ int smu7_powerup_vce(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_powerdown_samu(struct pp_hwmgr *hwmgr)
+static int smu7_powerdown_samu(struct pp_hwmgr *hwmgr)
 {
 	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
 			PHM_PlatformCaps_SamuPowerGating))
@@ -116,7 +116,7 @@ int smu7_powerdown_samu(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_powerup_samu(struct pp_hwmgr *hwmgr)
+static int smu7_powerup_samu(struct pp_hwmgr *hwmgr)
 {
 	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
 			PHM_PlatformCaps_SamuPowerGating))

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

@@ -89,7 +89,7 @@ enum DPM_EVENT_SRC {
 
 static const unsigned long PhwVIslands_Magic = (unsigned long)(PHM_VIslands_Magic);
 
-struct smu7_power_state *cast_phw_smu7_power_state(
+static struct smu7_power_state *cast_phw_smu7_power_state(
 				  struct pp_hw_power_state *hw_ps)
 {
 	PP_ASSERT_WITH_CODE((PhwVIslands_Magic == hw_ps->magic),
@@ -99,7 +99,7 @@ struct smu7_power_state *cast_phw_smu7_power_state(
 	return (struct smu7_power_state *)hw_ps;
 }
 
-const struct smu7_power_state *cast_const_phw_smu7_power_state(
+static const struct smu7_power_state *cast_const_phw_smu7_power_state(
 				 const struct pp_hw_power_state *hw_ps)
 {
 	PP_ASSERT_WITH_CODE((PhwVIslands_Magic == hw_ps->magic),
@@ -115,7 +115,7 @@ const struct smu7_power_state *cast_const_phw_smu7_power_state(
  * @param    hwmgr  the address of the powerplay hardware manager.
  * @return   always 0
  */
-int smu7_get_mc_microcode_version (struct pp_hwmgr *hwmgr)
+static int smu7_get_mc_microcode_version(struct pp_hwmgr *hwmgr)
 {
 	cgs_write_register(hwmgr->device, mmMC_SEQ_IO_DEBUG_INDEX, 0x9F);
 
@@ -124,7 +124,7 @@ int smu7_get_mc_microcode_version (struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-uint16_t smu7_get_current_pcie_speed(struct pp_hwmgr *hwmgr)
+static uint16_t smu7_get_current_pcie_speed(struct pp_hwmgr *hwmgr)
 {
 	uint32_t speedCntl = 0;
 
@@ -135,7 +135,7 @@ uint16_t smu7_get_current_pcie_speed(struct pp_hwmgr *hwmgr)
 			PCIE_LC_SPEED_CNTL, LC_CURRENT_DATA_RATE));
 }
 
-int smu7_get_current_pcie_lane_number(struct pp_hwmgr *hwmgr)
+static int smu7_get_current_pcie_lane_number(struct pp_hwmgr *hwmgr)
 {
 	uint32_t link_width;
 
@@ -155,7 +155,7 @@ int smu7_get_current_pcie_lane_number(struct pp_hwmgr *hwmgr)
 * @param    pHwMgr  the address of the powerplay hardware manager.
 * @return   always PP_Result_OK
 */
-int smu7_enable_smc_voltage_controller(struct pp_hwmgr *hwmgr)
+static int smu7_enable_smc_voltage_controller(struct pp_hwmgr *hwmgr)
 {
 	if (hwmgr->feature_mask & PP_SMC_VOLTAGE_CONTROL_MASK)
 		smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_Voltage_Cntl_Enable);
@@ -802,7 +802,7 @@ static int smu7_setup_dpm_tables_v1(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_setup_default_dpm_tables(struct pp_hwmgr *hwmgr)
+static int smu7_setup_default_dpm_tables(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 
@@ -1153,7 +1153,7 @@ static int smu7_disable_thermal_auto_throttle(struct pp_hwmgr *hwmgr)
 	return smu7_disable_auto_throttle_source(hwmgr, PHM_AutoThrottleSource_Thermal);
 }
 
-int smu7_pcie_performance_request(struct pp_hwmgr *hwmgr)
+static int smu7_pcie_performance_request(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 	data->pcie_performance_request = true;
@@ -1161,7 +1161,7 @@ int smu7_pcie_performance_request(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
+static int smu7_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
 {
 	int tmp_result = 0;
 	int result = 0;
@@ -1864,7 +1864,7 @@ static int smu7_set_private_data_based_on_pptable_v1(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_patch_voltage_workaround(struct pp_hwmgr *hwmgr)
+static int smu7_patch_voltage_workaround(struct pp_hwmgr *hwmgr)
 {
 	struct phm_ppt_v1_information *table_info =
 		       (struct phm_ppt_v1_information *)(hwmgr->pptable);
@@ -2253,7 +2253,7 @@ static int smu7_set_private_data_based_on_pptable_v0(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
+static int smu7_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data;
 	int result;
@@ -3672,14 +3672,16 @@ static int smu7_set_max_fan_pwm_output(struct pp_hwmgr *hwmgr, uint16_t us_max_f
 			PPSMC_MSG_SetFanPwmMax, us_max_fan_pwm);
 }
 
-int smu7_notify_smc_display_change(struct pp_hwmgr *hwmgr, bool has_display)
+static int
+smu7_notify_smc_display_change(struct pp_hwmgr *hwmgr, bool has_display)
 {
 	PPSMC_Msg msg = has_display ? (PPSMC_Msg)PPSMC_HasDisplay : (PPSMC_Msg)PPSMC_NoDisplay;
 
 	return (smum_send_msg_to_smc(hwmgr->smumgr, msg) == 0) ?  0 : -1;
 }
 
-int smu7_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
+static int
+smu7_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
 {
 	uint32_t num_active_displays = 0;
 	struct cgs_display_info info = {0};
@@ -3701,7 +3703,7 @@ int smu7_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwmgr)
 * @param    hwmgr  the address of the powerplay hardware manager.
 * @return   always OK
 */
-int smu7_program_display_gap(struct pp_hwmgr *hwmgr)
+static int smu7_program_display_gap(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 	uint32_t num_active_displays = 0;
@@ -3751,7 +3753,7 @@ int smu7_program_display_gap(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_display_configuration_changed_task(struct pp_hwmgr *hwmgr)
+static int smu7_display_configuration_changed_task(struct pp_hwmgr *hwmgr)
 {
 	return smu7_program_display_gap(hwmgr);
 }
@@ -3775,13 +3777,14 @@ static int smu7_set_max_fan_rpm_output(struct pp_hwmgr *hwmgr, uint16_t us_max_f
 			PPSMC_MSG_SetFanRpmMax, us_max_fan_rpm);
 }
 
-int smu7_register_internal_thermal_interrupt(struct pp_hwmgr *hwmgr,
+static int smu7_register_internal_thermal_interrupt(struct pp_hwmgr *hwmgr,
 					const void *thermal_interrupt_info)
 {
 	return 0;
 }
 
-bool smu7_check_smc_update_required_for_display_configuration(struct pp_hwmgr *hwmgr)
+static bool
+smu7_check_smc_update_required_for_display_configuration(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 	bool is_update_required = false;
@@ -3810,7 +3813,9 @@ static inline bool smu7_are_power_levels_equal(const struct smu7_performance_lev
 		  (pl1->pcie_lane == pl2->pcie_lane));
 }
 
-int smu7_check_states_equal(struct pp_hwmgr *hwmgr, const struct pp_hw_power_state *pstate1, const struct pp_hw_power_state *pstate2, bool *equal)
+static int smu7_check_states_equal(struct pp_hwmgr *hwmgr,
+		const struct pp_hw_power_state *pstate1,
+		const struct pp_hw_power_state *pstate2, bool *equal)
 {
 	const struct smu7_power_state *psa;
 	const struct smu7_power_state *psb;
@@ -3843,7 +3848,7 @@ int smu7_check_states_equal(struct pp_hwmgr *hwmgr, const struct pp_hw_power_sta
 	return 0;
 }
 
-int smu7_upload_mc_firmware(struct pp_hwmgr *hwmgr)
+static int smu7_upload_mc_firmware(struct pp_hwmgr *hwmgr)
 {
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 
@@ -3972,7 +3977,7 @@ static int smu7_init_sclk_threshold(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int smu7_setup_asic_task(struct pp_hwmgr *hwmgr)
+static int smu7_setup_asic_task(struct pp_hwmgr *hwmgr)
 {
 	int tmp_result, result = 0;
 

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

@@ -2049,7 +2049,7 @@ int fiji_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
 	return 0;
 }
 
-int fiji_program_mem_timing_parameters(struct pp_hwmgr *hwmgr)
+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_smumgr.c

@@ -159,7 +159,7 @@ static int fiji_start_smu_in_non_protection_mode(struct pp_smumgr *smumgr)
 	return result;
 }
 
-int fiji_setup_pwr_virus(struct pp_smumgr *smumgr)
+static int fiji_setup_pwr_virus(struct pp_smumgr *smumgr)
 {
 	int i, result = -1;
 	uint32_t reg, data;
@@ -224,7 +224,7 @@ static int fiji_start_avfs_btc(struct pp_smumgr *smumgr)
 	return result;
 }
 
-int fiji_setup_pm_fuse_for_avfs(struct pp_smumgr *smumgr)
+static int fiji_setup_pm_fuse_for_avfs(struct pp_smumgr *smumgr)
 {
 	int result = 0;
 	uint32_t table_start;
@@ -260,7 +260,7 @@ int fiji_setup_pm_fuse_for_avfs(struct pp_smumgr *smumgr)
 	return result;
 }
 
-int fiji_setup_graphics_level_structure(struct pp_smumgr *smumgr)
+static int fiji_setup_graphics_level_structure(struct pp_smumgr *smumgr)
 {
 	int32_t vr_config;
 	uint32_t table_start;
@@ -299,7 +299,7 @@ int fiji_setup_graphics_level_structure(struct pp_smumgr *smumgr)
 }
 
 /* Work in Progress */
-int fiji_restore_vft_table(struct pp_smumgr *smumgr)
+static int fiji_restore_vft_table(struct pp_smumgr *smumgr)
 {
 	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
 
@@ -311,7 +311,7 @@ int fiji_restore_vft_table(struct pp_smumgr *smumgr)
 }
 
 /* Work in Progress */
-int fiji_save_vft_table(struct pp_smumgr *smumgr)
+static int fiji_save_vft_table(struct pp_smumgr *smumgr)
 {
 	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
 
@@ -322,7 +322,7 @@ int fiji_save_vft_table(struct pp_smumgr *smumgr)
 		return -EINVAL;
 }
 
-int fiji_avfs_event_mgr(struct pp_smumgr *smumgr, bool smu_started)
+static int fiji_avfs_event_mgr(struct pp_smumgr *smumgr, bool smu_started)
 {
 	struct fiji_smumgr *priv = (struct fiji_smumgr *)(smumgr->backend);
 

drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c

@@ -118,7 +118,7 @@ static int polaris10_perform_btc(struct pp_smumgr *smumgr)
 }
 
 
-int polaris10_setup_graphics_level_structure(struct pp_smumgr *smumgr)
+static int polaris10_setup_graphics_level_structure(struct pp_smumgr *smumgr)
 {
 	uint32_t vr_config;
 	uint32_t dpm_table_start;
@@ -172,7 +172,8 @@ int polaris10_setup_graphics_level_structure(struct pp_smumgr *smumgr)
 	return 0;
 }
 
-int polaris10_avfs_event_mgr(struct pp_smumgr *smumgr, bool SMU_VFT_INTACT)
+static int
+polaris10_avfs_event_mgr(struct pp_smumgr *smumgr, bool SMU_VFT_INTACT)
 {
 	struct polaris10_smumgr *smu_data = (struct polaris10_smumgr *)(smumgr->backend);