diff options
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 11 | ||||
| -rw-r--r-- | include/linux/cpufreq.h | 9 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 3eff158d9750..96a69c67a545 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -19,6 +19,7 @@ #include <linux/cpu.h> #include <linux/cpufreq.h> +#include <linux/cpu_cooling.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/init.h> @@ -1316,6 +1317,10 @@ static int cpufreq_online(unsigned int cpu) if (cpufreq_driver->ready) cpufreq_driver->ready(policy); + if (IS_ENABLED(CONFIG_CPU_THERMAL) && + cpufreq_driver->flags & CPUFREQ_IS_COOLING_DEV) + policy->cdev = of_cpufreq_cooling_register(policy); + pr_debug("initialization complete\n"); return 0; @@ -1403,6 +1408,12 @@ static int cpufreq_offline(unsigned int cpu) goto unlock; } + if (IS_ENABLED(CONFIG_CPU_THERMAL) && + cpufreq_driver->flags & CPUFREQ_IS_COOLING_DEV) { + cpufreq_cooling_unregister(policy->cdev); + policy->cdev = NULL; + } + if (cpufreq_driver->stop_cpu) cpufreq_driver->stop_cpu(policy); diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index c19142911554..9db074ecbbd7 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -151,6 +151,9 @@ struct cpufreq_policy { /* For cpufreq driver's internal use */ void *driver_data; + + /* Pointer to the cooling device if used for thermal mitigation */ + struct thermal_cooling_device *cdev; }; /* Only for ACPI */ @@ -378,6 +381,12 @@ struct cpufreq_driver { */ #define CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING BIT(6) +/* + * Set by drivers that want the core to automatically register the cpufreq + * driver as a thermal cooling device. + */ +#define CPUFREQ_IS_COOLING_DEV BIT(7) + int cpufreq_register_driver(struct cpufreq_driver *driver_data); int cpufreq_unregister_driver(struct cpufreq_driver *driver_data); |