92  * AMD Energy Preference Performance (EPP)
93  * The EPP is used in the CCLK DPM controller to drive
95  * short periods of activity. EPP values will be utilized for
97  * display strings corresponding to EPP index in the
218 	u64 epp;  in shmem_get_epp()  local
221 	ret = cppc_get_epp_perf(cpudata->cpu, &epp);  in shmem_get_epp()
227 	return FIELD_GET(AMD_CPPC_EPP_PERF_MASK, epp);  in shmem_get_epp()
231 			   u8 des_perf, u8 max_perf, u8 epp, bool fast_switch)  in msr_update_perf()  argument
243 	value |= FIELD_PREP(AMD_CPPC_EPP_PERF_MASK, epp);  in msr_update_perf()
250 					  epp,  in msr_update_perf()
279 					  u8 max_perf, u8 epp,  in amd_pstate_update_perf()  argument
283 						   max_perf, epp, fast_switch);  in amd_pstate_update_perf()
286 static int msr_set_epp(struct cpufreq_policy *policy, u8 epp)  in msr_set_epp()  argument
294 	value |= FIELD_PREP(AMD_CPPC_EPP_PERF_MASK, epp);  in msr_set_epp()
300 					  epp,  in msr_set_epp()
326 static inline int amd_pstate_set_epp(struct cpufreq_policy *policy, u8 epp)  in amd_pstate_set_epp()  argument
328 	return static_call(amd_pstate_set_epp)(policy, epp);  in amd_pstate_set_epp()
331 static int shmem_set_epp(struct cpufreq_policy *policy, u8 epp)  in shmem_set_epp()  argument
345 					  epp,  in shmem_set_epp()
351 					  epp != epp_cached);  in shmem_set_epp()
354 	if (epp == epp_cached)  in shmem_set_epp()
357 	perf_ctrls.energy_perf = epp;  in shmem_set_epp()
366 	value |= FIELD_PREP(AMD_CPPC_EPP_PERF_MASK, epp);  in shmem_set_epp()
464 			     u8 des_perf, u8 max_perf, u8 epp, bool fast_switch)  in shmem_update_perf()  argument
472 		int ret = shmem_set_epp(policy, epp);  in shmem_update_perf()
485 	value |= FIELD_PREP(AMD_CPPC_EPP_PERF_MASK, epp);  in shmem_update_perf()
492 					  epp,  in shmem_update_perf()
1128 	u8 epp;  in store_energy_performance_preference()  local
1139 		epp = cpudata->epp_default;  in store_energy_performance_preference()
1141 		epp = epp_values[ret];  in store_energy_performance_preference()
1143 	if (epp > 0 && policy->policy == CPUFREQ_POLICY_PERFORMANCE) {  in store_energy_performance_preference()
1144 		pr_debug("EPP cannot be set under performance policy\n");  in store_energy_performance_preference()
1148 	ret = amd_pstate_set_epp(policy, epp);  in store_energy_performance_preference()
1157 	u8 preference, epp;  in show_energy_performance_preference()  local
1159 	epp = FIELD_GET(AMD_CPPC_EPP_PERF_MASK, cpudata->cppc_req_cached);  in show_energy_performance_preference()
1161 	switch (epp) {  in show_energy_performance_preference()
1523 	u8 epp;  in amd_pstate_epp_update_limit()  local
1529 		epp = 0;  in amd_pstate_epp_update_limit()
1531 		epp = FIELD_GET(AMD_CPPC_EPP_PERF_MASK, cpudata->cppc_req_cached);  in amd_pstate_epp_update_limit()
1536 				      perf.max_limit_perf, epp, false);  in amd_pstate_epp_update_limit()
1630 	.name		= "amd-pstate-epp",