/* Clock ratio multiplied by 10 - see table 27 in AMD#23446 */
static struct cpufreq_frequency_table clock_ratio[] = {
- {60, /* 110 -> 6.0x */ 0},
- {55, /* 011 -> 5.5x */ 0},
- {50, /* 001 -> 5.0x */ 0},
- {45, /* 000 -> 4.5x */ 0},
- {40, /* 010 -> 4.0x */ 0},
- {35, /* 111 -> 3.5x */ 0},
- {30, /* 101 -> 3.0x */ 0},
- {20, /* 100 -> 2.0x */ 0},
- {0, CPUFREQ_TABLE_END}
+ {0, 60, /* 110 -> 6.0x */ 0},
+ {0, 55, /* 011 -> 5.5x */ 0},
+ {0, 50, /* 001 -> 5.0x */ 0},
+ {0, 45, /* 000 -> 4.5x */ 0},
+ {0, 40, /* 010 -> 4.0x */ 0},
+ {0, 35, /* 111 -> 3.5x */ 0},
+ {0, 30, /* 101 -> 3.0x */ 0},
+ {0, 20, /* 100 -> 2.0x */ 0},
+ {0, 0, CPUFREQ_TABLE_END}
};
static const u8 index_to_register[8] = { 6, 3, 1, 0, 2, 7, 5, 4 };
static int powernow_k6_target(struct cpufreq_policy *policy,
unsigned int best_i)
{
- struct cpufreq_freqs freqs;
if (clock_ratio[best_i].driver_data > max_multiplier) {
printk(KERN_ERR PFX "invalid target frequency\n");
return -EINVAL;
}
- freqs.old = busfreq * powernow_k6_get_cpu_multiplier();
- freqs.new = busfreq * clock_ratio[best_i].driver_data;
-
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
powernow_k6_set_cpu_multiplier(best_i);
- cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-
return 0;
}
static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
{
+ struct cpufreq_frequency_table *pos;
unsigned int i, f;
unsigned khz;
}
}
if (param_max_multiplier) {
- for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) {
- if (clock_ratio[i].driver_data == param_max_multiplier) {
+ cpufreq_for_each_entry(pos, clock_ratio)
+ if (pos->driver_data == param_max_multiplier) {
max_multiplier = param_max_multiplier;
goto have_max_multiplier;
}
- }
printk(KERN_ERR "powernow-k6: invalid max_multiplier parameter, valid parameters 20, 30, 35, 40, 45, 50, 55, 60\n");
return -EINVAL;
}
param_busfreq = busfreq * 10;
/* table init */
- for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) {
- f = clock_ratio[i].driver_data;
+ cpufreq_for_each_entry(pos, clock_ratio) {
+ f = pos->driver_data;
if (f > max_multiplier)
- clock_ratio[i].frequency = CPUFREQ_ENTRY_INVALID;
+ pos->frequency = CPUFREQ_ENTRY_INVALID;
else
- clock_ratio[i].frequency = busfreq * f;
+ pos->frequency = busfreq * f;
}
/* cpuinfo and default policy values */
static int powernow_k6_cpu_exit(struct cpufreq_policy *policy)
{
unsigned int i;
- for (i = 0; i < 8; i++) {
- if (i == max_multiplier)
+
+ for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) {
+ if (clock_ratio[i].driver_data == max_multiplier) {
+ struct cpufreq_freqs freqs;
+
+ freqs.old = policy->cur;
+ freqs.new = clock_ratio[i].frequency;
+ freqs.flags = 0;
+
+ cpufreq_freq_transition_begin(policy, &freqs);
powernow_k6_target(policy, i);
+ cpufreq_freq_transition_end(policy, &freqs, 0);
+ break;
+ }
}
- cpufreq_frequency_table_put_attr(policy->cpu);
return 0;
}