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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-02-24 21:54:59 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-02-24 21:54:59 +0300
commitc5eb92f57de2446e0071c3af70ea54f237eb05d5 (patch)
tree831886a7a0ae600361876e8148582fd14e5b282f
parentcfb92440ee71adcc2105b0890bb01ac3cddb8507 (diff)
parentef8ee1cb8fc8976a68f5e89cd5f7b6f7de80c66f (diff)
downloadlinux-c5eb92f57de2446e0071c3af70ea54f237eb05d5.tar.xz
Merge branch 'cpufreq/arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
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
-rw-r--r--Documentation/cpu-freq/cpu-drivers.rst3
-rw-r--r--Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst2
-rw-r--r--drivers/cpufreq/cpufreq.c4
-rw-r--r--drivers/cpufreq/qcom-cpufreq-hw.c11
-rw-r--r--include/linux/cpufreq.h3
5 files changed, 22 insertions, 1 deletions
diff --git a/Documentation/cpu-freq/cpu-drivers.rst b/Documentation/cpu-freq/cpu-drivers.rst
index 3b32336a7803..d84ededb66f9 100644
--- a/Documentation/cpu-freq/cpu-drivers.rst
+++ b/Documentation/cpu-freq/cpu-drivers.rst
@@ -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.
diff --git a/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst b/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
index 87a36044f828..2ca92042767b 100644
--- a/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
+++ b/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
@@ -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。
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index b8d95536ee22..80f535cc8a75 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -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);
diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index 05f3d7876e44..effbb680b453 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -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)
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 1ab29e61b078..3522a272b74d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -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 */