diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-25 12:17:20 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-02-25 12:17:20 -0800 |
commit | 2800b6d0fc390d7c3f22109a408d5ed72746588c (patch) | |
tree | 7429d0d9a07e508e093f7e388eaf61857aee007a | |
parent | c47658311d60be064b839f329c0e4d34f5f0735b (diff) | |
parent | c5eb92f57de2446e0071c3af70ea54f237eb05d5 (diff) | |
download | linux-2800b6d0fc390d7c3f22109a408d5ed72746588c.tar.gz |
Merge tag 'pm-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Fix the throttle IRQ handling during cpufreq initialization on
Qualcomm platforms (Bjorn Andersson)"
* tag 'pm-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: qcom-hw: Delay enabling throttle_irq
cpufreq: Reintroduce ready() callback
-rw-r--r-- | Documentation/cpu-freq/cpu-drivers.rst | 3 | ||||
-rw-r--r-- | Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst | 2 | ||||
-rw-r--r-- | drivers/cpufreq/cpufreq.c | 4 | ||||
-rw-r--r-- | drivers/cpufreq/qcom-cpufreq-hw.c | 11 | ||||
-rw-r--r-- | include/linux/cpufreq.h | 3 |
5 files changed, 22 insertions, 1 deletions
diff --git a/Documentation/cpu-freq/cpu-drivers.rst b/Documentation/cpu-freq/cpu-drivers.rst index 3b32336a7803eb..d84ededb66f92a 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 87a36044f828c9..2ca92042767be4 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 b8d95536ee22e8..80f535cc8a757f 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 05f3d7876e448d..effbb680b453f2 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 1ab29e61b078ed..3522a272b74dde 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 */ |