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path: root/drivers/cpufreq/freq_table.c
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Diffstat (limited to 'drivers/cpufreq/freq_table.c')
-rw-r--r--drivers/cpufreq/freq_table.c64
1 files changed, 31 insertions, 33 deletions
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index 08e7bbcf6d73..1632981c4b25 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -21,22 +21,19 @@
21int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy, 21int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
22 struct cpufreq_frequency_table *table) 22 struct cpufreq_frequency_table *table)
23{ 23{
24 struct cpufreq_frequency_table *pos;
24 unsigned int min_freq = ~0; 25 unsigned int min_freq = ~0;
25 unsigned int max_freq = 0; 26 unsigned int max_freq = 0;
26 unsigned int i; 27 unsigned int freq;
27 28
28 for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { 29 cpufreq_for_each_valid_entry(pos, table) {
29 unsigned int freq = table[i].frequency; 30 freq = pos->frequency;
30 if (freq == CPUFREQ_ENTRY_INVALID) {
31 pr_debug("table entry %u is invalid, skipping\n", i);
32 31
33 continue;
34 }
35 if (!cpufreq_boost_enabled() 32 if (!cpufreq_boost_enabled()
36 && (table[i].flags & CPUFREQ_BOOST_FREQ)) 33 && (pos->flags & CPUFREQ_BOOST_FREQ))
37 continue; 34 continue;
38 35
39 pr_debug("table entry %u: %u kHz\n", i, freq); 36 pr_debug("table entry %u: %u kHz\n", (int)(pos - table), freq);
40 if (freq < min_freq) 37 if (freq < min_freq)
41 min_freq = freq; 38 min_freq = freq;
42 if (freq > max_freq) 39 if (freq > max_freq)
@@ -57,7 +54,8 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_cpuinfo);
57int cpufreq_frequency_table_verify(struct cpufreq_policy *policy, 54int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
58 struct cpufreq_frequency_table *table) 55 struct cpufreq_frequency_table *table)
59{ 56{
60 unsigned int next_larger = ~0, freq, i = 0; 57 struct cpufreq_frequency_table *pos;
58 unsigned int freq, next_larger = ~0;
61 bool found = false; 59 bool found = false;
62 60
63 pr_debug("request for verification of policy (%u - %u kHz) for cpu %u\n", 61 pr_debug("request for verification of policy (%u - %u kHz) for cpu %u\n",
@@ -65,9 +63,9 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
65 63
66 cpufreq_verify_within_cpu_limits(policy); 64 cpufreq_verify_within_cpu_limits(policy);
67 65
68 for (; freq = table[i].frequency, freq != CPUFREQ_TABLE_END; i++) { 66 cpufreq_for_each_valid_entry(pos, table) {
69 if (freq == CPUFREQ_ENTRY_INVALID) 67 freq = pos->frequency;
70 continue; 68
71 if ((freq >= policy->min) && (freq <= policy->max)) { 69 if ((freq >= policy->min) && (freq <= policy->max)) {
72 found = true; 70 found = true;
73 break; 71 break;
@@ -118,7 +116,8 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
118 .driver_data = ~0, 116 .driver_data = ~0,
119 .frequency = 0, 117 .frequency = 0,
120 }; 118 };
121 unsigned int i; 119 struct cpufreq_frequency_table *pos;
120 unsigned int freq, i = 0;
122 121
123 pr_debug("request for target %u kHz (relation: %u) for cpu %u\n", 122 pr_debug("request for target %u kHz (relation: %u) for cpu %u\n",
124 target_freq, relation, policy->cpu); 123 target_freq, relation, policy->cpu);
@@ -132,15 +131,19 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
132 break; 131 break;
133 } 132 }
134 133
135 for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { 134 cpufreq_for_each_valid_entry(pos, table) {
136 unsigned int freq = table[i].frequency; 135 freq = pos->frequency;
137 if (freq == CPUFREQ_ENTRY_INVALID) 136
138 continue; 137 i = pos - table;
139 if ((freq < policy->min) || (freq > policy->max)) 138 if ((freq < policy->min) || (freq > policy->max))
140 continue; 139 continue;
140 if (freq == target_freq) {
141 optimal.driver_data = i;
142 break;
143 }
141 switch (relation) { 144 switch (relation) {
142 case CPUFREQ_RELATION_H: 145 case CPUFREQ_RELATION_H:
143 if (freq <= target_freq) { 146 if (freq < target_freq) {
144 if (freq >= optimal.frequency) { 147 if (freq >= optimal.frequency) {
145 optimal.frequency = freq; 148 optimal.frequency = freq;
146 optimal.driver_data = i; 149 optimal.driver_data = i;
@@ -153,7 +156,7 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
153 } 156 }
154 break; 157 break;
155 case CPUFREQ_RELATION_L: 158 case CPUFREQ_RELATION_L:
156 if (freq >= target_freq) { 159 if (freq > target_freq) {
157 if (freq <= optimal.frequency) { 160 if (freq <= optimal.frequency) {
158 optimal.frequency = freq; 161 optimal.frequency = freq;
159 optimal.driver_data = i; 162 optimal.driver_data = i;
@@ -184,8 +187,7 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_target);
184int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy, 187int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy,
185 unsigned int freq) 188 unsigned int freq)
186{ 189{
187 struct cpufreq_frequency_table *table; 190 struct cpufreq_frequency_table *pos, *table;
188 int i;
189 191
190 table = cpufreq_frequency_get_table(policy->cpu); 192 table = cpufreq_frequency_get_table(policy->cpu);
191 if (unlikely(!table)) { 193 if (unlikely(!table)) {
@@ -193,10 +195,9 @@ int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy,
193 return -ENOENT; 195 return -ENOENT;
194 } 196 }
195 197
196 for (i = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) { 198 cpufreq_for_each_valid_entry(pos, table)
197 if (table[i].frequency == freq) 199 if (pos->frequency == freq)
198 return i; 200 return pos - table;
199 }
200 201
201 return -EINVAL; 202 return -EINVAL;
202} 203}
@@ -208,16 +209,13 @@ EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_index);
208static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf, 209static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf,
209 bool show_boost) 210 bool show_boost)
210{ 211{
211 unsigned int i = 0;
212 ssize_t count = 0; 212 ssize_t count = 0;
213 struct cpufreq_frequency_table *table = policy->freq_table; 213 struct cpufreq_frequency_table *pos, *table = policy->freq_table;
214 214
215 if (!table) 215 if (!table)
216 return -ENODEV; 216 return -ENODEV;
217 217
218 for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) { 218 cpufreq_for_each_valid_entry(pos, table) {
219 if (table[i].frequency == CPUFREQ_ENTRY_INVALID)
220 continue;
221 /* 219 /*
222 * show_boost = true and driver_data = BOOST freq 220 * show_boost = true and driver_data = BOOST freq
223 * display BOOST freqs 221 * display BOOST freqs
@@ -229,10 +227,10 @@ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf,
229 * show_boost = false and driver_data != BOOST freq 227 * show_boost = false and driver_data != BOOST freq
230 * display NON BOOST freqs 228 * display NON BOOST freqs
231 */ 229 */
232 if (show_boost ^ (table[i].flags & CPUFREQ_BOOST_FREQ)) 230 if (show_boost ^ (pos->flags & CPUFREQ_BOOST_FREQ))
233 continue; 231 continue;
234 232
235 count += sprintf(&buf[count], "%d ", table[i].frequency); 233 count += sprintf(&buf[count], "%d ", pos->frequency);
236 } 234 }
237 count += sprintf(&buf[count], "\n"); 235 count += sprintf(&buf[count], "\n");
238 236