Merge branches 'pm-opp-fixes', 'pm-cpufreq-fixes' and 'pm-cpuidle-fixes'

* pm-opp-fixes:
  PM / OPP: Remove useless check

* pm-cpufreq-fixes:
  intel_pstate: Fix intel_pstate_get()
  cpufreq: intel_pstate: Fix HWP on boot CPU after system resume
  cpufreq: st: enable selective initialization based on the platform

* pm-cpuidle-fixes:
  ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value
This commit is contained in:
Rafael J. Wysocki 2016-05-06 13:16:22 +02:00
commit 5f2f88e330
5 changed files with 38 additions and 23 deletions

View file

@ -259,9 +259,6 @@ unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
reg = opp_table->regulator;
if (IS_ERR(reg)) {
/* Regulator may not be required for device */
if (reg)
dev_err(dev, "%s: Invalid regulator (%ld)\n", __func__,
PTR_ERR(reg));
rcu_read_unlock();
return 0;
}

View file

@ -1557,21 +1557,25 @@ void cpufreq_suspend(void)
if (!cpufreq_driver)
return;
if (!has_target())
if (!has_target() && !cpufreq_driver->suspend)
goto suspend;
pr_debug("%s: Suspending Governors\n", __func__);
for_each_active_policy(policy) {
down_write(&policy->rwsem);
ret = cpufreq_governor(policy, CPUFREQ_GOV_STOP);
up_write(&policy->rwsem);
if (has_target()) {
down_write(&policy->rwsem);
ret = cpufreq_governor(policy, CPUFREQ_GOV_STOP);
up_write(&policy->rwsem);
if (ret)
pr_err("%s: Failed to stop governor for policy: %p\n",
__func__, policy);
else if (cpufreq_driver->suspend
&& cpufreq_driver->suspend(policy))
if (ret) {
pr_err("%s: Failed to stop governor for policy: %p\n",
__func__, policy);
continue;
}
}
if (cpufreq_driver->suspend && cpufreq_driver->suspend(policy))
pr_err("%s: Failed to suspend driver: %p\n", __func__,
policy);
}
@ -1596,7 +1600,7 @@ void cpufreq_resume(void)
cpufreq_suspended = false;
if (!has_target())
if (!has_target() && !cpufreq_driver->resume)
return;
pr_debug("%s: Resuming Governors\n", __func__);
@ -1605,7 +1609,7 @@ void cpufreq_resume(void)
if (cpufreq_driver->resume && cpufreq_driver->resume(policy)) {
pr_err("%s: Failed to resume driver: %p\n", __func__,
policy);
} else {
} else if (has_target()) {
down_write(&policy->rwsem);
ret = cpufreq_start_governor(policy);
up_write(&policy->rwsem);

View file

@ -453,6 +453,14 @@ static void intel_pstate_hwp_set(const struct cpumask *cpumask)
}
}
static int intel_pstate_hwp_set_policy(struct cpufreq_policy *policy)
{
if (hwp_active)
intel_pstate_hwp_set(policy->cpus);
return 0;
}
static void intel_pstate_hwp_set_online_cpus(void)
{
get_online_cpus();
@ -1062,8 +1070,9 @@ static inline bool intel_pstate_sample(struct cpudata *cpu, u64 time)
static inline int32_t get_avg_frequency(struct cpudata *cpu)
{
return div64_u64(cpu->pstate.max_pstate_physical * cpu->sample.aperf *
cpu->pstate.scaling, cpu->sample.mperf);
return fp_toint(mul_fp(cpu->sample.core_pct_busy,
int_tofp(cpu->pstate.max_pstate_physical *
cpu->pstate.scaling / 100)));
}
static inline int32_t get_target_pstate_use_cpu_load(struct cpudata *cpu)
@ -1106,8 +1115,6 @@ static inline int32_t get_target_pstate_use_performance(struct cpudata *cpu)
int32_t core_busy, max_pstate, current_pstate, sample_ratio;
u64 duration_ns;
intel_pstate_calc_busy(cpu);
/*
* core_busy is the ratio of actual performance to max
* max_pstate is the max non turbo pstate available
@ -1191,8 +1198,11 @@ static void intel_pstate_update_util(struct update_util_data *data, u64 time,
if ((s64)delta_ns >= pid_params.sample_rate_ns) {
bool sample_taken = intel_pstate_sample(cpu, time);
if (sample_taken && !hwp_active)
intel_pstate_adjust_busy_pstate(cpu);
if (sample_taken) {
intel_pstate_calc_busy(cpu);
if (!hwp_active)
intel_pstate_adjust_busy_pstate(cpu);
}
}
}
@ -1346,8 +1356,7 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy)
out:
intel_pstate_set_update_util_hook(policy->cpu);
if (hwp_active)
intel_pstate_hwp_set(policy->cpus);
intel_pstate_hwp_set_policy(policy);
return 0;
}
@ -1411,6 +1420,7 @@ static struct cpufreq_driver intel_pstate_driver = {
.flags = CPUFREQ_CONST_LOOPS,
.verify = intel_pstate_verify_policy,
.setpolicy = intel_pstate_set_policy,
.resume = intel_pstate_hwp_set_policy,
.get = intel_pstate_get,
.init = intel_pstate_cpu_init,
.stop_cpu = intel_pstate_stop_cpu,

View file

@ -259,6 +259,10 @@ static int sti_cpufreq_init(void)
{
int ret;
if ((!of_machine_is_compatible("st,stih407")) &&
(!of_machine_is_compatible("st,stih410")))
return -ENODEV;
ddata.cpu = get_cpu_device(0);
if (!ddata.cpu) {
dev_err(ddata.cpu, "Failed to get device for CPU0\n");

View file

@ -50,7 +50,7 @@ static int arm_enter_idle_state(struct cpuidle_device *dev,
* call the CPU ops suspend protocol with idle index as a
* parameter.
*/
arm_cpuidle_suspend(idx);
ret = arm_cpuidle_suspend(idx);
cpu_pm_exit();
}