Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * linux/drivers/cpufreq/freq_table.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2002 - 2003 Dominik Brodowski
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/cpufreq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <trace/hooks/cpufreq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) /*********************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  *                     FREQUENCY TABLE HELPERS                       *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *********************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) bool policy_has_boost_freq(struct cpufreq_policy *policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	struct cpufreq_frequency_table *pos, *table = policy->freq_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	if (!table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	cpufreq_for_each_valid_entry(pos, table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		if (pos->flags & CPUFREQ_BOOST_FREQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 			return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) EXPORT_SYMBOL_GPL(policy_has_boost_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 				    struct cpufreq_frequency_table *table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	struct cpufreq_frequency_table *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	unsigned int min_freq = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	unsigned int max_freq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	unsigned int freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	cpufreq_for_each_valid_entry(pos, table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		freq = pos->frequency;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		if (!cpufreq_boost_enabled()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		    && (pos->flags & CPUFREQ_BOOST_FREQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		pr_debug("table entry %u: %u kHz\n", (int)(pos - table), freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		if (freq < min_freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 			min_freq = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		if (freq > max_freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 			max_freq = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	trace_android_vh_freq_table_limits(policy, min_freq, max_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	policy->min = policy->cpuinfo.min_freq = min_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	policy->max = max_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	 * If the driver has set its own cpuinfo.max_freq above max_freq, leave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	 * it as is.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	if (policy->cpuinfo.max_freq < max_freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		policy->max = policy->cpuinfo.max_freq = max_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	if (policy->min == ~0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) int cpufreq_frequency_table_verify(struct cpufreq_policy_data *policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 				   struct cpufreq_frequency_table *table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	struct cpufreq_frequency_table *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	unsigned int freq, next_larger = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	pr_debug("request for verification of policy (%u - %u kHz) for cpu %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 					policy->min, policy->max, policy->cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	cpufreq_verify_within_cpu_limits(policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	cpufreq_for_each_valid_entry(pos, table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		freq = pos->frequency;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if ((freq >= policy->min) && (freq <= policy->max)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		if ((next_larger > freq) && (freq > policy->max))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 			next_larger = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		policy->max = next_larger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		cpufreq_verify_within_cpu_limits(policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	pr_debug("verification lead to (%u - %u kHz) for cpu %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 				policy->min, policy->max, policy->cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)  * Generic routine to verify policy & frequency table, requires driver to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)  * policy->freq_table prior to it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int cpufreq_generic_frequency_table_verify(struct cpufreq_policy_data *policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (!policy->freq_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	return cpufreq_frequency_table_verify(policy, policy->freq_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) EXPORT_SYMBOL_GPL(cpufreq_generic_frequency_table_verify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int cpufreq_table_index_unsorted(struct cpufreq_policy *policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 				 unsigned int target_freq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 				 unsigned int relation)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	struct cpufreq_frequency_table optimal = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		.driver_data = ~0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		.frequency = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	struct cpufreq_frequency_table suboptimal = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		.driver_data = ~0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		.frequency = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct cpufreq_frequency_table *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct cpufreq_frequency_table *table = policy->freq_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	unsigned int freq, diff, i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	pr_debug("request for target %u kHz (relation: %u) for cpu %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 					target_freq, relation, policy->cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	switch (relation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	case CPUFREQ_RELATION_H:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		suboptimal.frequency = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	case CPUFREQ_RELATION_L:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	case CPUFREQ_RELATION_C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		optimal.frequency = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	cpufreq_for_each_valid_entry_idx(pos, table, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		freq = pos->frequency;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		if ((freq < policy->min) || (freq > policy->max))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		if (freq == target_freq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			optimal.driver_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		switch (relation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		case CPUFREQ_RELATION_H:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			if (freq < target_freq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 				if (freq >= optimal.frequency) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 					optimal.frequency = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 					optimal.driver_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 				if (freq <= suboptimal.frequency) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 					suboptimal.frequency = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 					suboptimal.driver_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		case CPUFREQ_RELATION_L:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			if (freq > target_freq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 				if (freq <= optimal.frequency) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 					optimal.frequency = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 					optimal.driver_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 				if (freq >= suboptimal.frequency) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 					suboptimal.frequency = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 					suboptimal.driver_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		case CPUFREQ_RELATION_C:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			diff = abs(freq - target_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			if (diff < optimal.frequency ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 			    (diff == optimal.frequency &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			     freq > table[optimal.driver_data].frequency)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 				optimal.frequency = diff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 				optimal.driver_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (optimal.driver_data > i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		if (suboptimal.driver_data > i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			WARN(1, "Invalid frequency table: %d\n", policy->cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		index = suboptimal.driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		index = optimal.driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	pr_debug("target index is %u, freq is:%u kHz\n", index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		 table[index].frequency);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) EXPORT_SYMBOL_GPL(cpufreq_table_index_unsorted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		unsigned int freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	struct cpufreq_frequency_table *pos, *table = policy->freq_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	int idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (unlikely(!table)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		pr_debug("%s: Unable to find frequency table\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	cpufreq_for_each_valid_entry_idx(pos, table, idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		if (pos->frequency == freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			return idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)  * show_available_freqs - show available frequencies for the specified CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 				    bool show_boost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	ssize_t count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	struct cpufreq_frequency_table *pos, *table = policy->freq_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (!table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	cpufreq_for_each_valid_entry(pos, table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		 * show_boost = true and driver_data = BOOST freq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		 * display BOOST freqs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		 * show_boost = false and driver_data = BOOST freq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		 * show_boost = true and driver_data != BOOST freq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		 * continue - do not display anything
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		 * show_boost = false and driver_data != BOOST freq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		 * display NON BOOST freqs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		if (show_boost ^ (pos->flags & CPUFREQ_BOOST_FREQ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		count += sprintf(&buf[count], "%d ", pos->frequency);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	count += sprintf(&buf[count], "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define cpufreq_attr_available_freq(_name)	  \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct freq_attr cpufreq_freq_attr_##_name##_freqs =     \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) __ATTR_RO(_name##_frequencies)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)  * show_scaling_available_frequencies - show available normal frequencies for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)  * the specified CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static ssize_t scaling_available_frequencies_show(struct cpufreq_policy *policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 						  char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	return show_available_freqs(policy, buf, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) cpufreq_attr_available_freq(scaling_available);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_available_freqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)  * show_available_boost_freqs - show available boost frequencies for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)  * the specified CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static ssize_t scaling_boost_frequencies_show(struct cpufreq_policy *policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 					      char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	return show_available_freqs(policy, buf, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) cpufreq_attr_available_freq(scaling_boost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_boost_freqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct freq_attr *cpufreq_generic_attr[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	&cpufreq_freq_attr_scaling_available_freqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) EXPORT_SYMBOL_GPL(cpufreq_generic_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int set_freq_table_sorted(struct cpufreq_policy *policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	struct cpufreq_frequency_table *pos, *table = policy->freq_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	struct cpufreq_frequency_table *prev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	int ascending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	policy->freq_table_sorted = CPUFREQ_TABLE_UNSORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	cpufreq_for_each_valid_entry(pos, table) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		if (!prev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 			prev = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		if (pos->frequency == prev->frequency) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 			pr_warn("Duplicate freq-table entries: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 				pos->frequency);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		/* Frequency increased from prev to pos */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		if (pos->frequency > prev->frequency) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 			/* But frequency was decreasing earlier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 			if (ascending < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 				pr_debug("Freq table is unsorted\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 				return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 			ascending++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 			/* Frequency decreased from prev to pos */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 			/* But frequency was increasing earlier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 			if (ascending > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 				pr_debug("Freq table is unsorted\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 				return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 			ascending--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		prev = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	if (ascending > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		policy->freq_table_sorted = CPUFREQ_TABLE_SORTED_ASCENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		policy->freq_table_sorted = CPUFREQ_TABLE_SORTED_DESCENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	pr_debug("Freq table is sorted in %s order\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 		 ascending > 0 ? "ascending" : "descending");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) int cpufreq_table_validate_and_sort(struct cpufreq_policy *policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	if (!policy->freq_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	ret = cpufreq_frequency_table_cpuinfo(policy, policy->freq_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	return set_freq_table_sorted(policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) MODULE_DESCRIPTION("CPUfreq frequency table helpers");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) MODULE_LICENSE("GPL");