*/
int (*active_power)(unsigned long *power, unsigned long *freq,
struct device *dev);
+
+ /**
+ * get_cost() - Provide the cost at the given performance state of
+ * a device
+ * @dev : Device for which we do this operation (can be a CPU)
+ * @freq : Frequency at the performance state in kHz
+ * @cost : The cost value for the performance state
+ * (modified)
+ *
+ * In case of CPUs, the cost is the one of a single CPU in the domain.
+ * It is expected to fit in the [0, EM_MAX_POWER] range due to internal
+ * usage in EAS calculation.
+ *
+ * Return 0 on success, or appropriate error value in case of failure.
+ */
+ int (*get_cost)(struct device *dev, unsigned long freq,
+ unsigned long *cost);
};
-#define EM_DATA_CB(_active_power_cb) { .active_power = &_active_power_cb }
#define EM_SET_ACTIVE_POWER_CB(em_cb, cb) ((em_cb).active_power = cb)
+#define EM_ADV_DATA_CB(_active_power_cb, _cost_cb) \
+ { .active_power = _active_power_cb, \
+ .get_cost = _cost_cb }
+#define EM_DATA_CB(_active_power_cb) \
+ EM_ADV_DATA_CB(_active_power_cb, NULL)
struct em_perf_domain *em_cpu_get(int cpu);
struct em_perf_domain *em_pd_get(struct device *dev);
#else
struct em_data_callback {};
+#define EM_ADV_DATA_CB(_active_power_cb, _cost_cb) { }
#define EM_DATA_CB(_active_power_cb) { }
#define EM_SET_ACTIVE_POWER_CB(em_cb, cb) do { } while (0)