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rk29: cpufreq: no slowdown too much when overheat

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黄涛
2011-09-01 18:48:00 +08:00
parent 805035e9c4
commit acb9fd4439
1 changed files with 15 additions and 25 deletions
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40
arch/arm/mach-rk29/cpufreq.c
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@@ -75,7 +75,7 @@ module_param(limit_secs, int, 0644);
static int limit_temp;
module_param(limit_temp, int, 0444);
#define LIMIT_AVG_VOLTAGE 1225000 /* vU */
#define LIMIT_AVG_VOLTAGE 1200000 /* vU */
#else /* !CONFIG_RK29_CPU_FREQ_LIMIT_BY_TEMP */
#define LIMIT_AVG_VOLTAGE 1400000 /* vU */
#endif /* CONFIG_RK29_CPU_FREQ_LIMIT_BY_TEMP */
@@ -92,15 +92,7 @@ module_param(debug_mask, uint, 0644);
#define LIMIT_AVG_FREQ (816 * KHZ) /* kHz */
static unsigned int limit_avg_freq = LIMIT_AVG_FREQ;
static int rk29_cpufreq_set_limit_avg_freq(const char *val, struct kernel_param *kp)
{
int err = param_set_uint(val, kp);
if (!err) {
board_update_cpufreq_table(freq_table);
}
return err;
}
module_param_call(limit_avg_freq, rk29_cpufreq_set_limit_avg_freq, param_get_uint, &limit_avg_freq, 0644);
module_param(limit_avg_freq, uint, 0444);
static int limit_avg_index = -1;
@@ -120,7 +112,6 @@ module_param_call(limit_avg_voltage, rk29_cpufreq_set_limit_avg_voltage, param_g
static bool limit_fb1_is_on;
static bool limit_hdmi_is_on;
static inline bool aclk_limit(void) { return limit_hdmi_is_on && limit_fb1_is_on; }
static int limit_index_816 = -1;
module_param(limit_fb1_is_on, bool, 0644);
module_param(limit_hdmi_is_on, bool, 0644);
#else
@@ -128,6 +119,8 @@ static inline bool aclk_limit(void) { return false; }
#endif
#if defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_DISP) || defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_TEMP)
static int limit_index_816 = -1;
static unsigned int limit_freq_816;
static int limit_index_1008 = -1;
static unsigned int limit_freq_1008;
#endif
@@ -152,10 +145,9 @@ static void board_do_update_cpufreq_table(struct cpufreq_frequency_table *table)
limit_avg_freq = 0;
limit_avg_index = -1;
#ifdef CONFIG_RK29_CPU_FREQ_LIMIT_BY_DISP
limit_index_816 = -1;
#endif
#if defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_DISP) || defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_TEMP)
limit_index_816 = -1;
limit_freq_816 = 0;
limit_index_1008 = -1;
limit_freq_1008 = 0;
#endif
@@ -166,13 +158,11 @@ static void board_do_update_cpufreq_table(struct cpufreq_frequency_table *table)
limit_avg_freq = table[i].frequency;
limit_avg_index = i;
}
#ifdef CONFIG_RK29_CPU_FREQ_LIMIT_BY_DISP
#if defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_DISP) || defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_TEMP)
if (table[i].frequency <= 816 * KHZ &&
(limit_index_816 < 0 ||
(limit_index_816 >= 0 && table[limit_index_816].frequency < table[i].frequency)))
limit_index_816 = i;
#endif
#if defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_DISP) || defined(CONFIG_RK29_CPU_FREQ_LIMIT_BY_TEMP)
if (table[i].frequency <= 1008 * KHZ &&
(limit_index_1008 < 0 ||
(limit_index_1008 >= 0 && table[limit_index_1008].frequency < table[i].frequency))) {
@@ -225,7 +215,7 @@ static void rk29_cpufreq_limit_by_temp(struct cpufreq_policy *policy, unsigned i
unsigned int target_freq;
if (!limit || !rk29_cpufreq_is_ondemand_policy(policy) ||
(limit_avg_index < 0) || (relation & MASK_FURTHER_CPUFREQ)) {
(limit_index_816 < 0) || (relation & MASK_FURTHER_CPUFREQ)) {
limit_temp = 0;
last.tv64 = 0;
return;
@@ -254,7 +244,7 @@ static void rk29_cpufreq_limit_by_temp(struct cpufreq_policy *policy, unsigned i
c = TEMP_COEFF_408;
else if (cur <= 624 * 1000)
c = TEMP_COEFF_624;
else if (cur <= limit_avg_freq)
else if (cur <= 816 * 1000)
c = TEMP_COEFF_816;
else if (cur <= 1008 * 1000)
c = TEMP_COEFF_1008;
@@ -270,9 +260,9 @@ static void rk29_cpufreq_limit_by_temp(struct cpufreq_policy *policy, unsigned i
overheat_temp = TEMP_COEFF_1008 * limit_secs * 1000;
overheat_temp_1200 = overheat_temp - TEMP_COEFF_1200 * (WORK_DELAY/HZ) * 1000;
if (temp > overheat_temp && target_freq > limit_avg_freq)
target_index = limit_avg_index;
else if (target_freq > limit_freq_1008 && limit_freq_1008 > limit_avg_freq &&
if (temp > overheat_temp && target_freq > limit_freq_816)
target_index = limit_index_816;
else if (target_freq > limit_freq_1008 && limit_freq_1008 > limit_freq_816 &&
temp > overheat_temp_1200 && temp <= overheat_temp)
target_index = limit_index_1008;
@@ -738,7 +728,7 @@ static int rk29_cpufreq_pm_notifier_event(struct notifier_block *this,
switch (event) {
case PM_SUSPEND_PREPARE:
ret = cpufreq_driver_target(policy, limit_avg_freq, DISABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_L);
ret = cpufreq_driver_target(policy, limit_avg_freq, DISABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_H);
if (ret < 0) {
ret = NOTIFY_BAD;
goto out;
@@ -747,7 +737,7 @@ static int rk29_cpufreq_pm_notifier_event(struct notifier_block *this,
break;
case PM_POST_RESTORE:
case PM_POST_SUSPEND:
cpufreq_driver_target(policy, limit_avg_freq, ENABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_L);
cpufreq_driver_target(policy, limit_avg_freq, ENABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_H);
ret = NOTIFY_OK;
break;
}
@@ -766,7 +756,7 @@ static int rk29_cpufreq_reboot_notifier_event(struct notifier_block *this,
struct cpufreq_policy *policy = cpufreq_cpu_get(0);
if (policy) {
cpufreq_driver_target(policy, limit_avg_freq, DISABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_L);
cpufreq_driver_target(policy, limit_avg_freq, DISABLE_FURTHER_CPUFREQ | CPUFREQ_RELATION_H);
cpufreq_cpu_put(policy);
}