@@ -30,6 +30,7 @@
#include <linux/syscore_ops.h>
#include <linux/tick.h>
#include <trace/events/power.h>
+#include <linux/cpu_cooling.h>
static LIST_HEAD(cpufreq_policy_list);
@@ -1318,6 +1319,12 @@ static int cpufreq_online(unsigned int cpu)
if (cpufreq_driver->ready)
cpufreq_driver->ready(policy);
+ if (cpufreq_driver->flags & CPUFREQ_AUTO_REGISTER_COOLING_DEV) {
+ struct thermal_cooling_device **cdev = &policy->cooldev;
+
+ *cdev = of_cpufreq_cooling_register(policy);
+ }
+
pr_debug("initialization complete\n");
return 0;
@@ -1411,6 +1418,12 @@ static int cpufreq_offline(unsigned int cpu)
if (has_target())
cpufreq_exit_governor(policy);
+ if (cpufreq_driver->flags & CPUFREQ_AUTO_REGISTER_COOLING_DEV) {
+ struct thermal_cooling_device **cdev = &policy->cooldev;
+
+ cpufreq_cooling_unregister(*cdev);
+ }
+
/*
* Perform the ->exit() even during light-weight tear-down,
* since this is a core component, and is essential for the
@@ -388,6 +388,12 @@ struct cpufreq_driver {
*/
#define CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING (1 << 6)
+/*
+ * Set by drivers that want the core to automatically register the cpufreq
+ * driver as a thermal cooling device
+ */
+#define CPUFREQ_AUTO_REGISTER_COOLING_DEV (1 << 7)
+
int cpufreq_register_driver(struct cpufreq_driver *driver_data);
int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
All cpufreq drivers do similar things to register as a cooling device. Provide a cpufreq driver flag so drivers can just ask the cpufreq core to register the cooling device on their behalf. This allows us to get rid of duplicated code in the drivers. Suggested-by: Stephen Boyd <swboyd@chromium.org> Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> --- drivers/cpufreq/cpufreq.c | 13 +++++++++++++ include/linux/cpufreq.h | 6 ++++++ 2 files changed, 19 insertions(+) -- 2.17.1