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Merge branch 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

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Pull ARM cpufreq fixes for 5.18-rc6 from Viresh Kumar:

"This fixes issues related to throttle IRQ for Qcom SoCs."

* 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: qcom-hw: Delay enabling throttle_irq
  cpufreq: Reintroduce ready() callback
This commit is contained in:
Rafael J. Wysocki 2022-02-24 19:54:59 +01:00
commit c5eb92f57d
5 changed files with 22 additions and 1 deletions
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3
Documentation/cpu-freq/cpu-drivers.rst
View File

@ -75,6 +75,9 @@ And optionally
.resume - A pointer to a per-policy resume function which is called
with interrupts disabled and _before_ the governor is started again.
.ready - A pointer to a per-policy ready function which is called after
the policy is fully initialized.
.attr - A pointer to a NULL-terminated list of "struct freq_attr" which
allow to export values to sysfs.

2
Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
View File

@ -84,6 +84,8 @@ CPUfreq核心层注册一个cpufreq_driver结构体。
.resume - 一个指向per-policy恢复函数的指针，该函数在关中断且在调节器再一次启动前被
调用。
.ready - 一个指向per-policy准备函数的指针，该函数在策略完全初始化之后被调用。
.attr - 一个指向NULL结尾的"struct freq_attr"列表的指针，该列表允许导出值到
sysfs。

4
drivers/cpufreq/cpufreq.c
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@ -1518,6 +1518,10 @@ static int cpufreq_online(unsigned int cpu)
kobject_uevent(&policy->kobj, KOBJ_ADD);
/* Callback for handling stuff after policy is ready */
if (cpufreq_driver->ready)
cpufreq_driver->ready(policy);
if (cpufreq_thermal_control_enabled(cpufreq_driver))
policy->cdev = of_cpufreq_cooling_register(policy);

11
drivers/cpufreq/qcom-cpufreq-hw.c
View File

@ -388,7 +388,7 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
snprintf(data->irq_name, sizeof(data->irq_name), "dcvsh-irq-%u", policy->cpu);
ret = request_threaded_irq(data->throttle_irq, NULL, qcom_lmh_dcvs_handle_irq,
IRQF_ONESHOT, data->irq_name, data);
IRQF_ONESHOT | IRQF_NO_AUTOEN, data->irq_name, data);
if (ret) {
dev_err(&pdev->dev, "Error registering %s: %d\n", data->irq_name, ret);
return 0;
@ -542,6 +542,14 @@ static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
return 0;
}
static void qcom_cpufreq_ready(struct cpufreq_policy *policy)
{
struct qcom_cpufreq_data *data = policy->driver_data;
if (data->throttle_irq >= 0)
enable_irq(data->throttle_irq);
}
static struct freq_attr *qcom_cpufreq_hw_attr[] = {
&cpufreq_freq_attr_scaling_available_freqs,
&cpufreq_freq_attr_scaling_boost_freqs,
@ -561,6 +569,7 @@ static struct cpufreq_driver cpufreq_qcom_hw_driver = {
.fast_switch = qcom_cpufreq_hw_fast_switch,
.name = "qcom-cpufreq-hw",
.attr = qcom_cpufreq_hw_attr,
.ready = qcom_cpufreq_ready,
};
static int qcom_cpufreq_hw_driver_probe(struct platform_device *pdev)

3
include/linux/cpufreq.h
View File

@ -382,6 +382,9 @@ struct cpufreq_driver {
int (*suspend)(struct cpufreq_policy *policy);
int (*resume)(struct cpufreq_policy *policy);
/* Will be called after the driver is fully initialized */
void (*ready)(struct cpufreq_policy *policy);
struct freq_attr **attr;
/* platform specific boost support code */