include/linux/pm_qos_params.h

   1 #ifndef _LINUX_PM_QOS_PARAMS_H
   2 #define _LINUX_PM_QOS_PARAMS_H
   3 /* interface for the pm_qos_power infrastructure of the linux kernel.
   4  *
   5  * Mark Gross <mgross@linux.intel.com>
   6  */
   7 #include <linux/plist.h>
   8 #include <linux/notifier.h>
   9 #include <linux/miscdevice.h>
  10
  11 #define PM_QOS_RESERVED 0
  12 #define PM_QOS_CPU_DMA_LATENCY 1
  13 #define PM_QOS_NETWORK_LATENCY 2
  14 #define PM_QOS_NETWORK_THROUGHPUT 3
  15
  16 #define PM_QOS_NUM_CLASSES 4
  17 #define PM_QOS_DEFAULT_VALUE -1
  18
  19 #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE        (2000 * USEC_PER_SEC)
  20 #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE        (2000 * USEC_PER_SEC)
  21 #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0
  22
  23 struct pm_qos_request_list {
  24         struct plist_node list;
  25         int pm_qos_class;
  26 };
  27
  28 void pm_qos_add_request(struct pm_qos_request_list *l, int pm_qos_class, s32 value);
  29 void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
  30                 s32 new_value);
  31 void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
  32
  33 int pm_qos_request(int pm_qos_class);
  34 int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier);
  35 int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
  36 int pm_qos_request_active(struct pm_qos_request_list *req);
  37
  38 #endif